CONTENTS
A1. State and Law. Jurisprudence
À2. Sociology. Demography
À5. Informatics/Computer Science
B1. Mathematics. Mechanics. Physics. Cybernetics
B4. Geography. Cartography. Astronomy
B5. Other Natural and Exact Sciences 166
C. TECHNICAL AND APPLIED SCIENCES. SECTORS
OF ECONOMY
C2. Electrical Engineering. Electronics. Radio
Engineering. Communications
C3. Automation & Telemetry. Computer Engineering
C4. Mining. Metallurgy. Chemical
Industry
C5. Mechanical
Engineering. Instrument-making
C8. Construction. Architecture
C9. Agriculture and Forestry. Fishery
C10. Water Industry. Melioration
C11. Foreign and Domestic Trade. Tourism
C13. Medicine. Public Healthcare
D1. Organization and Management
D2. Environmental Protection. Ecology
D4. Other Intersectoral Problems
A1. State and Law.
Jurisprudence
13.A1.1. Regional
innovation policy of new EU-member states and applicant member states:
The regional
innovation policy is one of the main components of the EU’s multilevel
innovation policy and a strong development tool. Accordingly, the elaboration
and implementation of such policy for the countries participating in the
European integration process is a serious challenge to be necessarily answered
by them. This fully concerns
Auth.
13.A1.2.
Comparative analysis of governmental administrations of the USA and France. /K. Pridonashvili/. Law and Economics. – 2013. – # 4. – pp. 4-13. – geo.; abs.: geo., eng., fr.
In this publication
the author makes a comparison of federal and unitary systems based on examples
of territorial organization in the
Auth.
13.A1.3. Principles of justice of
electoral law. /K. Pridonashvili/. Law and Economics. – 2013. – # 4. – pp. 28-34. – geo.; abs.: geo., eng., fr.
In this publication
the author reviews the peculiarities of functions of electoral systems. The
author gives essential arguments and expresses his negative attitude towards
the proportional electoral system, suggests to use the majority electoral
system only for parliamentary elections and introduces an institution of
primaries, which will enable and play an important part in balancing the
parliamentary majority and will be an effort for the legislative body to
fulfill effectively its functions and strengthen and establish parliamentarism
as an institution and values in Georgia. Ref.10.
Auth.
13.A1.4. Some legal
aspects of tax lien/mortgage and civil lien/mortgage. /I. Kharazi, T. Gardapkhadze/. Low and Economics. – 2013. – # 4. – pp.
35-46. – geo.; abs.: geo., eng.; fren.
The authors opine that the right of tax lien/mortgage and civil
mortgage, in particular contractual mortgage, originates on the debtor’s
property, which the debtor had when the principal obligation originated. Other
topical issues differentiating the tax lien/mortgage from the real mortgage are
discussed. Ref.5.
Auth.
13.A1.5. Some
considerations with regard to the territorial arrangement of Georgia. /K. Pridonashvili/. Low and Economics. – 2013.
– # 4. – pp. 47-62. – geo.; abs.: geo., eng., fren.
The present article
examines
the territorial
arrangement
of
Auth.
13.A1.6. How to make a policy of non–recognition
more effective. /V. Modebadze/. Law and Economics.–2013.– # 4. – pp.
63-69. – geo.; abs.: geo., eng., fren.
The article
explains how to make the policy of non-recognition of Abkhazia’s and South Ossetia’s
independence more effective. Effective implementation of the non-recognition policy depends on various factors: 1. Expansion of diplomatic ties. 2. Active cooperation
with western
countries and
international
organizations
and
their
involvement
in the
implementation of the
policy of
non-recognition. 3. Along with the non-recognition
policy the implementation of the policy of take-back
recognition. Ref.11.
Auth.
13.A1.7. Constitutional court
supervision of
The jurisdiction of the
Constitutional Court of Georgia extends to all types of international
treaties. The Constitutional Court of Georgia carries out supervision of
international treaties both in advance (preventive) and subsequently (repressive).
In the case of finding an international treaty unconstitutional, it is
advisable to set a legal date after the expiry of which the international
treaty, recognized as unconstitutional, will lose force. During this term state
bodies will be enabled to carry out appropriate procedures towards denouncing
the international treaty. Ref. 20.
Auth.
13.A1.8. The agent-oriented approach and the agent system
theory. /O. Shonia, T. Kaishauri, I. Kartvelishvili, L.
Kolbaia/. GEN. – 2013. – # 4. – pp. 19-25. – geo.; abs.: eng.
The article deals with the means of realization of the
system of visualization and analysis of the interconnections between normative
legal documents – the agent-oriented approach. The description of the
technology of this system and relevant explatations are discussed. The review
of agent architecture, classification, models and applications are given. Tab.
1, Fig. 2, Ref. 2.
Auth.
13.A1.9. Victimology aspects of crime in Georgia: state and
prevention. /E. Beselia/.
This article is devoted to a crime and
victimization analysis in contemporary
Auth.
13.A1.10. The specifics of dividing property between spouses. /D. Lobzhanidze/.
The article deals with the problems of
judicial division of property between spouses in the case of divorce as well as
well as the handling of problems arising in the course In claiming ownership.
Ref. 3.
Auth.
13.A1.11. Force and power. /G. Loria/.
The presented research deals with legal
aspects of the origin and realization of force and power. The rational,
comparative, synthetic and analytical methods are used. Attention is focused
on the opinions of well-known theorists and the author’s view around the
discussed problems expressed on the basis of their theories. The author
expresses an opinion that the law retains the status of regulative force of
public relations until it serves the purposes, aspirations and values of
society. Their complete disregard leads to mistrust to the law and society uses
the right of opposition. In such case it is no longer important whether the
right of opposition is or is not constitution-based, because the norms, which
may recognize this right, are no longer in effect. In such circumstances the
force of law and government is restricted and replaced by the societal force
until the people transfers the power to someone else. Ref. 6.
Auth.
13.A3.1. Land cadastre and
land management. /D. Egiashvili, A. Meskhishvili/. Agrarian-economic Science and Technologies. – 2014. – # 1. – pp. 40-50. – geo.; abs.: geo., eng.
The essence of a land cadastre and its difference from land registration
are given. The major objectives of land reform are mentioned, such as: drafting
new legislation to cover land and land management information; fixing actual
facts in the cadastre; accurate identification of land and land ownership
boundaries and a possibility of their planning under appropriate standards;
ensuring a simple and cost-effective approach to the data available in the
system; making public information concerning the system’s functioning and its
benefits, etc.
Auth.
13.A3.2. Regionalism
and self-governance. /O. Keshelashvili,
The priorities of
regionalism and self-governance are considered, such as: improvement of the
territorial administration structure and activation of territorial systems; decentralization
of powers and responsibilities; achievement and rooting of real self-governance in
regions; promotion of natural, unrestricted economic development of regions
(country); introduction of democratic principles of state administration at
national level. The reform having initiated in
Auth.
13.A3.3. The strategic program of
integration and sustainable development of tea-growing and tea industry and
economic mechanisms of its realization. /O. Keshelashvili/. Agrarian-economic Science and Technologies. – 2013. – # 3. – pp. 15-27. – geo.; abs.: geo., eng.
The main
objective of the study is to develop as strategic program of tea-growing and
tea industry integration and sustainable development, as well as an economic
mechanism of its implementation, on the basis of creating community unions and
their enrepreneurial capacity-building to result in an economic growth of the
agrarian sector, food security an improvement of social conditions of the rural
population.
Auth.
13.A3.4. Considerations and positions aimed at promoting
sustainable development of agriculture. /O. Keshelashvili/. Agrarian-economic Science and
Technologies. – 2013. – # 3. – pp. 28-34. – geo.; abs.: geo., eng.
Considerations on the setting up of an Analytical-Coordination and
Advisory-Certification Centre at the Ministry of Agriculture are presented.
Functions of the Centre and a work program in the direction of economic
analysis, marketing strategy, development and coordination priorities are
discussed. As regards an advisory activity of the Centre, proposals on the
establishment of a Training and Advanced Training Centre of Farmers and
Agriculturists in cooperation with the
Auth.
13.A3.5. Economic risk
and its management (risk management). /O. Keshelashvili,
Risk reduction means either a possibility
of mitigation of loss or reducing the undesired event probability. Irrespective
of the probability nature, risk should be managed and in many cases it is
successfully managed. Risk
management requires: creation of a work program and
methodology; risk assessment and analysis; setting out and implementation of reduction or elimination measures; establishment of risk management resources; risk prediction. The risk management (which is used to control the loss of income) is based on:
risk avoidance, taking risk, risk insurance, risk transfer to a third person, and various methods of reducing losses. The most popular risk protection and reduction methods are insurance,
self-insurance, diversification and limitation.
Auth.
13.A3.6.
The urgency, novelty, substantiation, and objectives of a National
Mountain Agriculture Development Program, as well as a comprehensive plant of
its development are presented. Program proposals and recommendations in terms
of the economic and technological perfection and management mechanism
improvement of mountain agriculture development are presented.
Auth.
13.A3.7. Issues concerning real
estate/land value and evaluation. /D. Egiashvili, A. Meskhishvili/. Agrarian-economic Science and
Technologies. – 2013 . – # 4. – pp. 23-29. - geo.; abs.: geo., eng.
Land is a huge resource without which there would be no life on earth.
Land has a physical as well as an abstract concept. Land use and ownership
rights are so tightly interlinked as the plant roots to the land. Prudent and
cautious land use is necessary for current and future generations. In a market
economy land and real estate represents an object of purchase and sale which has
its value. Market price for land and real estate is determined by its area,
location, characteristics of a building, size of occupied land, and zonal
coefficient. Calculation of real estate market price is based on official
information about market prices, executive government branches’ database, and
information provided by taxpayers to the tax services along with few other
reliable sources. During valuation process valuators strictly distinguish the
terminologies “sale price”, “market price”, “costs” and “value”.It’s important
to introduce and endorse land/real estate valuation methodology in Georgia and
support development of highly qualified competent real estate valuers.
Auth.
13.A3.8. Land administration and policy. /D. Egiashvili, A. Meskhishvili/.
Agrarian-economic Science and Technologies. – 2013. – # 4. – pp. 30-41. – geo.; abs.: geo., eng.
We can discuss land
and its usage from different angles. Land, as an object to which individuals or
groups have the right to sell or buy, is subject to taxation and represents a
foundation for economic activity. Land has a special meaning in a country’s
economy. Safety of the system of land administration must ensure order and
stability. During implementation the land administration policy, land
consolidation has a special meaning. Land management includes the nature of the
investment in the land and the execution of land area related-fundamental
political decisions.
Auth.
13.A3.9. Research of
economic cycles and crises
using MATLAB. /A. Bardavelidze, Kh. Bardavelidze/. Proceedings of the A.
Eliashvili Institute of Control Systems. – 2013. – # 17. – pp. 42-46. – geo.; abs.: geo., eng., rus.
The research of
cycles and crises in economics is presented by typical library blocks of
Simulink without a mathematical model. Block-scheme options of production with
designation of each block are developed. A model of economic cycles and crises
is presented by plotting device blocks and full set of experimental windows. In
studying the impact of system stability, term of working ability of devices on
the dynamics of production and the initial deficit production stability, it was
found that by increasing a delay, i.e. decelerating the response of production
to demand, the economic system’s indices – amplitude and oscillating period, as
well as instability and a risk of crises tend to increase. It is established
that the reason of cycles and crises during production in a closed economy is
the existence of negative feedback in a control system. Fig. 5, Ref. 7.
Auth.
13.A3.10. Innovation
policy in EU and Georgia: regional policy. /O. Shatberashvili/. The EU Eastern Partnership Programme and Prospects of Innovative
Development of
The countries, which
successfully developed in the 20th century, were those which had based public
administration on scientific expertise and directed economic processes on the
way of innovation. The innovation-directed development means the innovation
policy elaboration and implementation at all levels of
management/administration, both national and regional. This approach (tested by
international practice, primarily European) should be widely shared in
Auth.
13.A3.11. Labor activity motivation of personnel as an important factor in achieving competitive
superiority. /N. Kakauridze/. Professional’s Voice. – 2013. – # 1. – pp. 24-28. – geo.; abs.: geo.,
eng., rus.
The most important factor of achieving competitive
superiority – personnel motivation - is mentioned. Productivity of this
resource does not have any limits and therefore the greatest reserve of
industrial efficiency rests on it. The proposed factors of personnel motivation
make a team united by interlinked general targets. At that the team work of an
organization intimately includes motivation of individuals rather than
excluding it. The art of management is exactly in the encouragement of
individual performers with concurrent preservation of the working team. Ref. 4.
Auth.
13.A3.12. The impact of
increased investment activity în production
efficiency. /N. Kakauridze/. Professional’s Voice. – 2014. – # 1(1). – pp. 21-26. – rus.; abs.: geo.,
eng., rus.
The research is
presenting the results of the reforms implemented by the Georgian government to
improve the investment environment. The strategic plan of priorities and
priority projects are currently considered as a major step forward, for
promoting which the country is ready to provide financial incentives. Budgetary
funds are being used to develop business plans of investment projects; various
economic activities are under way, a great number of employees are being
trained in project financing which is, in the near future, to contribute to the
implementation of numerous investment projects, attraction of investments, and
creation of new workplaces and jobs. For investors, the attractive factor is
the investment legal framework, covering the following main areas: the
development of regional investment legislation and the regulatory framework in
the field of business support, information transparency in regions, the
creation of the highly-developed specialized market infrastructure for the
investment processes to be supported, the restructuring of enterprises to
increase their investment attractiveness and competitiveness. All these are to
greatly increase attractiveness of the country for investments in all types of
infrastructure. Ref. 6.
Auth.
13.A3.13. Optimal management of
fund flows in a company. /M.
Chumburidze, L. Janadze/. Professional’s Voice. – 2014. – #
1(1). – pp. 32-37. – geo.; abs.: geo., eng., rus.
The paper deals with the problem of non-classical
optimal control of variable accounting for discrete models of investment in a
company. As an example, the problem of optimal management of financial flows to
the company, where the control parameters are changed in each period of
investments planning is given. The author proposes own mathematical model. The
problem has been solved with the help of software applications, using-VBA and
Search Solutions in Excel. Fig. 5, Ref. 3.
Auth.
13.A3.14. Stages of the world
economic development and
Stage I started from the
last third of the 18th century and continued up to the thirties of the 20th century
(economic policy built on classical liberal theory); stage II started from the
forties of the 20th century àïd continued up to the
economic crisis in 1974-1975 (economic policy fitted to the Êåónåsiàn macroeconomic regulation); stage III started from the eighties of the
30th century and continued up to the såñînd half of the 1990s
(economic policy built în neoclassical sónthesis); stage IV
started in the second half of the 1990s and accomplished with the world crisis
in 2008 ("The anti-Êåónåsiàn revolution" - economic policy built on monetary theory). In
economic policy during
Auth.
13.A3.15. District
level management of the agricultural sector. /O. Keshelashvili/. Agrarian-economic Science and
Technologies. – 2014. – # 2. – pp. 6-16. - geo.; abs.: geo., eng.
The objective and
subjective reasons associated with a district-level management of the
agricultural sector are discussed. The lack of an organizational structure to
orient the development of the sector at district level based on the changes
taking place therein and to coordinate activities of agricultural production,
processing and service industries, intra-sectoral cooperation and interests is
mentioned. Accordingly, the scheme is divided into four segments: agriculture
departments, agricultural enterprises; processing enterprises and service
enterprises. The district-level management can be simply expressed as follows:
rural development; rural population’s responsible initiative; local resources
and the State support.
Auth.
13.A3.16. Effective management of land resources - a prerequisite for poverty reduction. /P.
Koguashvili, G. Zibzibadze/. Agrarian-economic Science and Technologies. 2014. – # 2. – pp. 34-42. – geo.; abs.: geo., eng.
The article analyzes poor
condition of
agricultural development and its major causes. The necessity of timely development of a
comprehensive land cadastre to become an economic basis for evaluating and
taxing
agricultural land, their monitoring, and appraising
their quantitative and qualitative changes is mentioned. Suggestions are made on the restoration of the State Land Management Service, which would enable the country to work
out annual land balances according to the land categories and
their beneficiaries, timely prevent the
adverse consequences that accompany our country's land resources
(desertification, secondary bogging,
erosion processes, heavy metal contamination, etc.).
Auth.
13.A3.17. Problems of government regulation
of budget rationing in the Republic of Armenia. /A. Gulyan/. Collected Papers of Institute of Water Management. – 2013. – # 68. – pp. 54-56. – rus.; abs.: geo., eng., rus
Problems of a government-regulated economy and particularly
the budget rationing in the construction are studied. Areas of government
regulation of construction adopted by legislation of the
Auth.
13.A3.18. The sources of deficient higher economic thinking. /R. Namicheishvili/. Goni. – 2014. – # 1. – pp. 16-20. –
geo.; abs.: geo., eng.
The conditions created in
Auth.
13.A3.19. Cost assessment of failure of instruments of labor. /Sh. ukleba, z. mikaberidze/. Goni. – 2014. – # 1. – pp. 29-30. – geo.; abs.: geo., eng.
The failure assessment of a technical system and a systems approach to
estimating the failure cost are studied. The classification of failures
according to many factors, including the catastrophic failure and accidental
failure/fault is considered. The qualitative characteristics of the “failure
price”, which enable to assess and characterize all the consequences of the
specific failure more accurately are studied. Ref. 3.
Auth.
13.A3.20. The phenomenon of industry
clustering. /N. Dumbadze, A. Davitadze, A. Noniadze/. Air
Transport. – 2013. – # 1(8). – pp. 78-87. – rus.; abs.: geo., eng., rus.
The industrial cluster policies carried out in developed countries
caused growth of GDP by 70-90%. For Georgian priority sectors, such as tourism,
aviation and agriculture, the main principle of clustering is to increase the
competitiveness and partner interrelationships of said industries. This will
result in an increased number of tourists entering the country, passengers
transported by air transport and agricultural products. The input-output
analysis model developed by V. Leontiev allows us to calculate the exact amount
of product produced by a particular industry sectors that will satisfy the
market demand of the given products, as well as balance the market demand and
supply of goods. Fig. 1, Ref. 8.
Auth.
13.A3.21. Evaluation of project realization
strategy based on a stochastic approach. /V. Momotov, G. Tevzadze/. Air Transport. – 2014. – # 1(9). – pp. 54-61. – rus.; abs.: geo., eng., rus.
Evaluating a possible
indicator of the project effectiveness according to the proposed methods will
make it possible to choose an optimal strategy for an investment project and optimize
its parameters. Ref. 6.
Auth.
13.A3.22. Equilibrium and optimal tax rates in the models of aggregate demand and
aggregate Supply (Laffer-Keynesian Synthesis). /I. Ananiashvili, V.Papava/. Bulletin of the
In contemporary economic
theories, the role of taxes is studied one-sidedly. Keynesianism mostly
emphasizes the mechanisms by which taxes affect the economy through aggregate
demand and almost does not take into account the mechanism of their effect on
the aggregate supply-side. The problem of taxes is also seen one-sidedly by
supply-side economics, in which the effect of the tax rate on aggregate supply
is brought to the fore. The paper presents a macroeconomic equilibrium model
in which aggregate demand and aggregate supply are considered not in relation
to the price level, as is traditionally done, but in terms of functions dependent
on the average tax rate. The concepts of optimal and equilibrium tax rates are
introduced. Based on an analysis of the model, it is shown that when the
government tries to maintain the equilibrium average tax rate at a fixed
level, the optimal tax rate becomes dependent on the price level, and an
appropriate change in aggregate demand may lead to approximation of the
optimal rate to the equilibrium rate. It is also demonstrated that each given
value of the equilibrium tax rate can be matched with a set of functions and
curves of aggregate supply and the national budget’s tax revenues. Ref. 9.
Auth.
13.A3.23. The behavioural model for estimating the Laffer fiscal points. /I. Ananiashvili, V. Papava/. Bulletin of the
The article examines the
approach to estimating the effect of the tax burden on the amount of total
output and budget revenues. This approach uses a behavioural model, with a
specific version of an entropy function. In the context of production
technology, to quantitatively estimate the dependence of output on the amount
of the tax burden, the article reflects the expansions of the macroeconomic
production function in which the role of the average tax rate is distinguished
in some form. The suggested model makes it possible to determine the so-called
fiscal points corresponding to the maximum production effect and the budget’s
maximum tax revenues. The conclusion is drawn that, these points correspond to
the Laffer concept, since for the points of the behavioural model the amount
of use of economic resources occurs endogenously. The results obtained are
illustrated using existing data on the
Auth.
13.A3.24. Information and advisory service
of small and medium enterprises. /K. Khmaladze,
The
article discusses the role of information and advisory services in the
upgrading competitiveness of SMEs. The information and advisory support is very
important for training entrepreneurs in the use of the results of new
information and innovation products and activities. The article provides a list
of business services classified by the general political document of the
European Economic Commission of the UN. The impediments for development of SMEs
are established and the principal requirements to institutions promoting entrepreneurship
are identified at a micro level. Ref. 1.
Auth.
13.A3.25. Present situation and development trends of the world
oil market. /G.Lobzhanidze/. Mining Jornal. – 2013. –
# 2(31). – pp. 47-53. – geo.; abs.: rus., eng.
The state
of oil prices, given various factors of the current world market trends, is
presented. In addition, studied and analyzed are the world’s oil reserves,
consumption, demand, the dynamics of world prices and the oil producing and oil
consumer states’ strategies, as well as the necessity and importance of
small-tonnage petrochemical industry production, and other topical issues
important for strengthening the economic development and independence of our
country. Tab. 3, Ref. 18.
Auth.
13.A3.26. Methods for calculating economic effectiveness of
pressure hydro transporting systems, in the case of their complete protection
from hydraulic impacts. /L. Makharadze, V.
Silagadze, M. Jangidze, S. Steriakova/. Mining Journal. – 2013. –
# 2(31). – pp. 56-59. – rus.; abs.: geo., eng.
Methods
for calculating economic effectiveness proposed by the authors is based on a
specific invention, which provides for the use of modern equipment, patents and
innovations in the national economy. Ref. 11.
Auth.
13.A3.27. Total revenue function and
integrated demand model. /Sh. Demurashvili, T. Macharadze,
A. Milnikov/. GEN. – 2013.– # 3. – pp. 23-27. – eng.; abs.: eng.
It is shown that the total revenue curve for a new nonlinear model of
the demand-price relationship is piecewise differentiable, has no minimums, but
only maximums. The total revenue curve in backup points xi, being
continuous, has no derivatives. The notion of Implicit and Explicit Maximums of
the Total Revenue Function were introduced and the criteria for determination
whether the given maximum of Integrated Total Revenue is explicit or implicit
were elaborated. Fig. 3, Ref.3.
Auth.
13.A3.28. Wellness industry development
options and strategy in
Today, the wellness industry, due to its highly prophylactic and health-improving
medical/biological direction is becoming extremely popular all over the world.
In the near future it is going to become a multi-billion industry. The concept
of wellness generally means a healthy balance of the mind, body and spirit in
an overall feeling of well-being by pleasant rather than forcible methods.
Auth.
13.A3.29. The effect of global economic crisis on world economy, its
reasons and overcoming mechanism. /D.
Aslanishvili, K. Omadze/.
The article demonstrates the reasons of
the recent economic crash, its developments and results for the world economy.
Also, how arduous are the ongoing problems, the state bodies’ reactions and
their steps to prevent the crisis, TARP program, its volume and mission,
differences between the ongoing crisis and the great depression time, also the
predicted three scenarios of future economic developments. Tab 6, Ref. 3.
Auth.
13.A3.30. Crisis cycle theory
and world economic crisis. /T.Akubardia/.
The article compares the economic model of
crises developed by the authors with the Kondratiev’s so-called semi-centennial
cycles. According to the proposed model, one of the main components of an
economic crisis is the financial crisis, which does not, in itself,
condition the economic crisis. Concerning the reasons of a financial crisis,
there is an essential difference between these models. According to
Kondratyev's theory, each important innovation causes an ascending phase of a
cycle whereas on our model, the reason of formation of financial crisis is the
compelled policy pursued by the government, which essence consists in artificial
increase of prices on goods and services. The compelled character of this
policy is that the artificial increase in the prices gives a chance to avoid
temporarily a crisis, but in the long-term period, because of the cumulative
effect of these measures, creates preconditions for the crisis emergence. Ref.
6.
Auth.
13.A3.31. Timeline
of economic policy of competition in
Due to the specifics of transition from the
centrally planned to the market economy, along with the formation of private
property relations in
Auth.
13.A3.32. Infrastructural
approach to service management. /E. Baratashvili,
B. Gechbaia/. Ekonomisti. – 2013. – # 2. – pp. 30-39. – geo.; abs.:
eng., geo., rus.
Service
infrastructure is one of the most important parts of the common market
infrastructure. No economy of any country or its separate administrative
territories can function without service infrastructure. The work underlines
two sides of market infrastructure – its material- substantial consistence,
economic potential, creating the conditions for system functioning of markets
and economical relations concerning the activities of market players, which are
directed to the creation of the conditions for commodity and monetary
circulation. The infrastructure is considered as a system providing the vital
activities of individuals and the functioning of legal persons. It is also
noted that the infrastructure of a number of organizations in
Auth.
13.A3.33. Synergy in
integration development of Ukrainian chemical industry enterprises. /A. Shevtsova, S. Gre-chanaya/. Ekonomisti. – 2013. – # 2. – pp. 45-51. – eng.; abs.:
eng., geo., rus.
The article is
devoted to issues of synergy organization and implementation during the
integration process of Ukrainian chemical industry enterprises after the
crisis. The overall state of the industry over the past five years is
analyzed. Objective reasons for the initiation of integration process are
identified and justified, their gist is determined. The practical experience of
creating vertically integrated structures based on a group of chemical
enterprises is generalized. Motivational and organizational approaches to
integration development with the benefits of synergy are established. Tab. 1,
Ref. 12.
Auth.
13.A3.34. Salary level and dynamic
analysis in Georgia. /M. Vashakidze, N.
Kakauridze/. Ekonomisti. – 2013. – # 2. – pp. 86-90. – geo.; abs.:
eng., geo., rus.
The paper notes that
the statistical analysis of salaries, as the main form of remuneration, allows
revealing the salary costs of the workforce. An analytical study of the wage
levels and dynamics is made based on wage indexes. Considered are the variable,
fixed composition and structural shift indices. Using these indices, it is
calculated how the level of average wages is changed and how it influences
certain factors, which is reflected in the corresponding graphs. Based on a
survey, it is concluded that despite the growth, wage income still has not
regained its status of main income. It has practically lost its economic
content and social-economic comparison function. Ref. 7.
Auth.
13.A3.35. Analysis of employment and
unemployment in
The paper discusses
the problems of employment and unemployment in Georgian society, which takes
the leading place in the list of country's social and economic issues. In terms
of unemployment, we have the so-called untapped production potentialities
costs, which are being lost because of the unused labor force. An analysis of
the unemployment rate in
Auth.
13.A3.36. The role of public diplomacy in the sphere of international
economic relations. /D. Kazbekova/. Ekonomisti. – 2013. – # 2. – pp. 102-107. – rus.; abs.:
eng., geo., rus.
The article aims to analyze the importance and the role of public
diplomacy in the context of international political economy. Considering the
importance of modern trends, it is necessary to premeditate the degree and
global scales of risks that are of priority importance at all levels of
business relations in the efficient and quality management development
strategy. Ref. 18.
Auth.
13.A3.37. Theoretical aspects of managing accounts receivables. /L. Gvenetadze/. Ekonomisti. – 2013. – # 3. – pp. 10-16. – geo.; abs.:
eng., geo., rus.
The
merthodological aspects of accounts receivables, such as credit policy, credit
repayment policy, establishment of creditworthiness standards, recovery policy
are discussed. The factors that have an impact on credit policies: variety of
goods, value of money and credit repayment terms are analyzed. Tab. 1, Ref. 6.
Auth.
13.A3.38. Some aspects of the
Georgian economy development concept. /E. Menabde-Jobadze/. Ekonomisti. – 2013. – # 3. – pp. 25-29. – geo.; abs.:
eng., geo., rus.
The article considers
the critical role of the State in development of economy in the rather complex
process of seeking for own market model. An adaptive model of development of
Auth.
13.A3.39. Partnership of social sector of
economy and private business. /M. Kapanadze, M.
Kvantaliani/. Ekonomisti. – 2013. – # 3. – pp. 30-34. – geo.; abs.:
eng., geo., rus.
Under new economic conditions, the State acts as one of the subjects of the market, while in the social sector, private and mixed enterprises begin to operate together with the governmental organizations.
Consequently, it is necessary that the regulatory role of the State is preserved with the
concurrent ensuring of a balance between the volume of social demands and the capabilities of meeting them. The problem of keeping an optimal balance
between the public and private sectors has always been of
urgency in a society. The subject of partnership between
the State and the private sector, which is more frequently used in many countries as a
regulatory of economy, becomes of priority. In the West, the State and business have
become rather mature
partners, although the State still plays the leading roler. The naked faith in the
"invisible hand of
the market” and the State’s inaction are certainly reasons of development of the global financial and environmental crises. Ref. 6.
Auth.
13.A3.40. Economic efficiency of foreign
investment in
The article deals
with the role and importance of foreign investment in Georgian economy. The
dynamics of foreign investment by years as well as a percentage of large
investor countries in the total investments of
Auth.
13.A3.41. Market principles of underwriting. /N. Benidze. J. Bitsadze, T. Gugeshashvili/. Ekonomisti. – 2013. – # 3. – pp. 64-70. – geo.; abs.:
eng., geo., rus.
The essence of underwriting, where competition
presents one of its commercial factors, is discussed. The insurer may not stay
alone in the competitive insurance market. If the
insurer sets a big insurance premiium, he might lose the business (clients),
while the setting of a small premium could imply losses for the insurance
company. The process of underwriting aims to properly select risks, create a
quaility portfolio of insurance risks. There are no ready-made recipes in the process.
An underwriter takes a decision based on the specific risk characteristics.
Auth.
13.A3.42. The main aspects of forecasting and issues of its
indicators analysis. /M. Tsutskiridze/. Ekonomisti. – 2013. – # 3. – pp. 71-79. – geo.; abs.:
eng., geo., rus.
The article deals with the main
aspects of macroeconomic indicators’ forecasting and issues of their analysis.
The basis of determining a multifactorial model of forecasting economic
indicators and its components is investigated. The main problems of economic
and social factors analysis are described. The importance of a long-term
economic growth, its systemic regulation and the impact of market factors on
the expected change of principal indicators of teh economic development are
analyzed. Ref. 7.
Auth.
13.A3.43. The
impact of non-tariff measures on foreign direct investments. /S. Jashi/. Ekonomisti. – 2013. – # 3. – pp. 102-109. – geo.; abs.:
eng., geo., rus.
Foreign Direct
Investments are important to overcome the social problems and economic
development of
Auth.
13.A4.1. Information support as a factor contributing to the development
of science and education. /M. Kopaleishvili, I.
Bedinashvili, E. Misabishvili,
The role of scientific abstracts publications in the
dissemination of the latest scientific achievements is outlined. Thematic
analysis of the Georgian Abstracts Journal published by Techinformi,
information support to individual branches of science, and the dynamics of
highlighting the abstracts of published editions are given. The
information collections available at Techinformi and designated for information
support of science and education are listed. Tab. 2, Ref. 6.
Auth.
13.A4.2. Development prospects of the water education sector at the
The educational and research activities of the Water
and Engineering Faculty of the Yerevan State
University of Architecture and Construction in traning bachelors and masters
are described. The university avails of respective chairs and laboratories for
professional training of specialist. The construction of a hydraulics
laboratoty equipped with modern equipment is under way. Fig.2, Ref. 2.
Auth.
13.A4.3. Competence-oriented
learning at a higher medical indtitution (review). /A. Nuftiyeva, G. Kausova/. Georgian Medical News. – 2014. – # 2(227). – pp. 57-62. – rus.; abs.: geo.,
eng., rus.
The aim of the study
was to analyze and assess interactive methods of training which are used at
Auth.
13.A4.4.
Fundamentals of professionalism
and international recommendations in architecture. /D. Abuladze/. Building. – 2013. – # 2(29). – pp. 159-162. – geo.; abs.: geo., eng.
The article deals with the state of higher
architectural education in
Auth.
13.A4.5. Problems and
solutions in vocational education and training in
The world practice shows
that the labor market is oriented to high qualification. Those who have
prestigious professions and relevant qualification have greater chances for
social self-realization. Under conditions of a market economy the price of such
labor force is significantly increasing. Therefore, under conditions of a free
competitive system the problem of vocational training, retraining and raising
the level of qualification of the labor force is especially important. The educational
system should be focused to prepare the young people for future challenges to
cope and use them for social benefit. Under conditions of modern scientific and
technical progress, the goal of lifelong learning is adaptation to dynamic life
and professional mobility of a person. Ref. 6.
Auth.
13.A4.6. Ecological
education sets the foundation for sustainbale utilization of the environment. /M. Chkhartishvili/. Mining Journal. – 2013. – # 1(30). – pp. 121-122. – geo.; abs.: rus., eng.
The
importance of ecological education, which is a basis for sustainalble use of
the environment, in discussed in the work. It is a continuous process of
teaching, upbringing, self-education and personality development, which is
directed towards the formation of behavioral norms and social knowledge. The
ecological education should define the right approach to the surroundings and
promote thus the improvement of the quality of life, economic development and
the ecological security of the. Ref.4
Auth.
13.A4.7. Some conceptual
issues of teaching physics. /N. Kavtaradze, I.
Lekvinadze, R. Chikovani/. GEN. – 2013.– # 4. – pp. 116-119. – geo.; abs.: eng.
The article deals with the problems of teaching
physics and the ways of their solution. An emphasis is made on the issues of
aarranging modern physics laboratories. To achieve this aim, students should be
more active and more keen on the subject. Career guidance and strengthenning of
the Georgian physics school are required. Ref. 2.
Auth.
13.A4.8. The necessity of restoratioin of general economic theory teaching in
universities of Georgia. /R. Asatiani/. Ekonomisti. – 2013. – # 1. – pp. 9-25. – geo.; abs.:
eng., geo., rus.
The article considers the role of general
economic theory as the source and methodological foundation of all economic
sciences in the national economic policy, in social and economic development
and in the expansion and refining of society outlook. In this connection
analyzed are the classical-liberal, “Keynesian” (neo-Keynesian), neoclassical
theories, “neoclassical synthesis” and monetary theory, served as a basis of
the economic policy of leading capitalist countries of the world with different
longevity and in different time periods. One is evident: the economic policy
built on Keynesian macro-economic regulation caused qualitative transformation
of “wild capitalism” into socially oriented market economy (“Keynesian
revolution”), while economic policy of developed countries adjusted to M.
Friedman monetary theory (“anti-Keynesian revolution”) caused economic crisis
of the contemporary world. With the respective argumentation the article
explains the processes which brought us to the following conclusion: the cause
of
Auth.
13.A4.9. Some issues of
management of technical universities in the
The paper focuses on
a number of issues related to higher educational institutions’ self-government.
Peculiarities of financial stability of technical universities of the
Auth.
13.A4.10. Internationalization of education
in the context of economic globalization. /K. Kondikerova/.
Ekonomisti. – 2013. – # 1. – pp. 55-61. – rus.; abs.:
eng., geo., rus.
The
internationalization of the education system under globalization condit ions is
considered. Creation of a single world space will require review and
consideration of a phased transition from one level to another in order to
achieve the global level, i.e. the one global education. Since close
cooperation and strategic partnership in the field of education, the creation
of joint educational projects, the participation of international treaties such
as the Lisbon Convention, the
Auth.
13.A4.11. The
need of using a systems approach to complex
development of university science, higher education and business in Georgia. /Sh. Machavariani/.
The present
work analyzes the shortcomings characteristic of science, higher education and
business in
Auth.
À5. Informatics/Computer Science
13.A5.1. On the approximation and scalarization of nonscalar
optimization problems. /V. Maisuradze, M. Salukvadze,
V.Gabisonia/. Proceedings of the A. Eliashvili
Institute of Control Systems. – 2013. – # 17. – pp. 13-26. – geo.; abs.: geo., eng., rus.
The concept of
approximate effective point of given subset of criteria space is defined in the
paper. The approximation issues of the set of effective points of reference set
by the set of approximate effective points are studied. In addirion, the
methods of generation of the set of effective points on the basis of standard
extreme problems solution are considered. The obtained theoretical results,
which substantially rely on preceding investigations of the authors about
separability of unnecessarily convex sets, are substantially applied to approximation
and scalarization of the problems of nonscalar optimization. Ref. 7.
Auth.
13.A5.2. Model
validation on
identification of one class of non-statıonary
systems. /B.
Shanshıashvılı, M. Salukvadze/. Proceedings of the A.
Eliashvili Institute of Control Systems. – 2013. – # 17. – pp. 27-33. – eng.; abs.: geo., eng., rus.
The problem of model
validation of linear non-stationary dynamic systems is considered by the
example of the second-order system identification. The problem of parametric
identification is stated as, in a certain sense, an inverse problem of Cauchy’s
problem for linear ordinary equations. It is shown that upon existence of the
exact information on input and output variables of the system, the output
signals of model coincide with output signals of system when the same signals
are given on their inputs. Ref. 15.
Auth.
13.A5.3. On the non-interactive estimation of
solutions in an iterative method of vector-valued optimization. /N. Kilasonia/. Proceedings of the A.
Eliashvili Institute of Control Systems. – 2013. – # 17. – pp. 39-41. – geo.; abs.: geo., eng., rus.
A new vector-valued optimization method is presented in the paper. Although
the method is not interactive, it implies a step-by-step improvement of the
compromise solution. The special coefficients are introduced in order to enable
the algorithm, to estimate current solutions and take decision how to continue
compromise solution searching process. The presented method is envisaged for
the type of users who for some reasons are not ready to work with the algorithm
interactively. Ref. 4.
Auth.
13.A5.4. Computation of a
commercial firm’s optimal plan by simplex method. /D. Sikharulidze, V. Maisuradze/. Proceedings of the A. Eliashvili Institute of Control Systems. – 2013. – # 17. – pp. 34-38. – geo.; abs.: geo., eng., rus.
The problem of a
commercial firm’s optimal type determination is turned to the problem of
linear-fractional programming, which by certain transformations [2] is turned
to the linear programming problem. The solution algorithm is illustrated by a
simple example. Ref. 2.
Auth.
13.A5.5. A simple quantitative model for evaluation of the sustainable development
index and its correlation with the knowledge society index (k-index). /Z. Buachidze, A. Gigineishvili, A.
Chirakadze, N. Kavlashvili, I. Khomeriki, Z. Sikmashvili, M. Wireman/. Proceedings of the A.
Eliashvili Institute of Control Systems. – 2013. – # 17. – pp. 49-54. – eng.; abs.: geo., eng., rus.
The main determining
factors of achieving sustainable development (SD) can be divided into three
groups: economic, social and environmental. Numerous works were done to propose a model for achieving a composite numerical
index of SD (ISD index) to track incorporated information on social,
economic and environmental dimensions of SD. Another approach is
related to characterizing of the progress of societies and countries according
to generation and use of new knowledge for ensuring their development. A
quantitative characteristic of the development of society and basic conditions
of its development is the index of K-society (IK). A third approach
is often utilized to evaluate the achieved progress by means of ISEC which
represents the security component of sustainable development norm, which is the
aggregated degree of remoteness of the country from the totality of ten presented
threats. It seems to be obvious that all three indices characterize the
relative progress really achieved by countries and the prospects of future
successful development. Thus, a good correlation of relative values of these
indices can indicate and approve the reliability of all of them. This work is
devoted to the testing of the simplest methods of the numerical (quantitative)
calculation of the SD Index (ISD) and
its comparison with the published values of Sustainable Development Indexes and
K-Society Indexes (IK,ISEC) for
a control group of countries with different levels of scientific, economic and
social development and environmental safety. The performed study showed that
there is a proper coincidence between the calculated SD and published K-society
indices which indicates the adequateness of both SD and K-society approaches
for characterizing the achieved and relative progress of countries and
societies in the modern world and the prospective of their future development. Tab. 2, Ref. 9.
Auth.
13.A5.6. Combined adaptive management system parameters
of artificial climate. /L. Gvaramadze, O. Labadze, N. Kavlashvili, T.
Saanishvili, G. Kiknadze/. Proceedings of the A. Eliashvili
Institute of Control Systems. – 2013. – # 17. – pp. 71-74. – geo.; abs.: geo., eng., rus.
The
features of building management and control systems of artificial microclimate
parameters for objects with irregular structure of the distribution parameters
in space are considered in the paper. The possibility of
using a combined method for a two-tier management of such facilities is shown
in the work. The structure of an
energy-efficient control and management system of artificial microclimate
parameters enabling to reduce the costs necessary for the implementation of the
governance process is given.
Fig. 2, Ref. 7.
Auth.
13.A5.7. CES
encoding standard system and a Georgian linguistic corpus. /N. Amirezashvili, L. Samsonadze/. Proceedings of the A. Eliashvili Institute of Control Systems. – 2013. – # 17. – pp. 136-140. – geo.; abs.: geo., eng., rus.
Different kinds of
linguistic corpora have been created to work on large amount of texts and take
out the necessary information. For working unification with different kinds of
corpora, and for the fact that the data of a corpus were not depended on the
realization of a certain program and on the interface of working with the
corpus, standards of annotation of textual corpora are being developed. In this
article morphosyntactic features of CES standard are described. Our goal is to create a corresponding annotation
system for Georgian linguistic corpus on the basis of encoding standard systems, which enables us
to describe any electronic text, written in Georgian language by international
standards. Ref. 3.
Auth.
13.A5.8. On an electronic
state. /T. Bakhtadze, I. Margalitadze, M. Gegechkori/. Proceedings of the A. Eliashvili Institute of Control Systems. – 2013. – # 17. – pp. 147-151. – geo.; abs.: geo., eng., rus.
The most important criteria of e-services that are necessary for e-states
to exist are considered in the paper. The methods how to move away barriers
that accompany the process of an e-state creation are given. Fig. 4, Ref. 6.
Auth.
13.A5.9. The role structure of a
Georgian sentence. /G. Chikoidze/. Proceedings of the A. Eliashvili
Institute of Control Systems. – 2013. – # 17. – pp. 111-117. – geo.; abs.: geo., eng., rus.
The paper presents
some schemes of role structure for a Georgian simple sentence. The main
components of this scheme are its core with its nucleus (verb) and the
periphery, which includes such characteristics of situation, expressed by the
utterance, as Instrument, yime, place, etc. The both main components have the
“layered structure”, and the order of these layers is defined by the degree of
“nearness” to the verb, that is to the nucleus of the core. The essential advantage
of the role structure is its immediate relative unite the meaning of utterance
differently from traditional and syntax, it defines the semantic functions of
meaning components and unites there in one system. Fig. 5, Ref. 4.
Auth.
13.A5.10. Deixis of time in Georgian. /A. Chutkerashvili/. Proceedings of the A. Eliashvili Institute of Control Systems. – 2013. – # 17. – pp. 131-135. – geo.; abs.: geo., eng., rus.
The relation between
language and context in a language structure is most clearly represented by the
phenomenon of deixis. The term (deixis) is of the Greek origin and means ‘indicating’,
‘denoting’. The traditional ones are personal, place and time categories of
deixis. Deixis of time describes time moments or sections with respect to the
time on which an expression is uttered. The time when the expression is created
is called Coding Time (CT) that is different from Receiving Time. Deixis of
time is generally expressed by adverbs of time. Ref. 4.
Auth.
13.A5.11. Perspective
of developments of cloud computing in education. /M.
Gegechkori, V. Bakhtadze, T. Lominadze, M. Archuadze, M. Odiladze/. Proceedings of the A. Eliashvili Institute of Control Systems. – 2013. – # 17. – pp. 145-147. – geo.; abs.: geo., eng., rus.
Perspective of
development of cloud computing in
the fields of education and sciences are considered in the work. Innovative
potential of Cloud Computing are
shown. Ref. 4.
Auth.
13.A5.12. International standard EAGLES for annotation of a Georgian text corpus. /L. Lortkipanidze,
The main purpose of
text corpora is to provide scientific researches in vocabulary and grammar of
language. As a result of corpora annotation, it is possible to get any
analytical information about the text. There is a set of the international
projects that develop standards and instructions for coding and development of
language corpora. One of them is EAGLES standards (Expert Advisory Group on
Language Engineering Standards), which is an initiative of the European
commission within Linguistic Research and Engineering program. Its aim is to
accelerate the provision of standards for very large-scale language resources
(such as text corpora, computational lexicons and speech corpora).
Morphosyntactic features of EAGLES standard are described in this article.
According to the standard, the Georgian morphosyntactic features, which are
necessary for annotation of a Georgian text corpus, are submitted. Ref. 7.
Auth.
13.A5.13. Knowledge
acquisition method from evaluation texts on the basis of concepts. /M. Khachidze, M.
Archuadze, G. Besiashvili/. Proceedings of the A. Eliashvili
Institute of Control Systems. – 2013. – # 17. – pp. 180-184. – geo.; abs.: geo., eng., rus.
The paper considers the method of knowledge
acquisition from evaluating texts. The said method has been worked out by
synthesizing two existing methods: Explicit Semantic Analysis (ESA) and
analytical heuristics. The article examines a new and more convenient method
for concept describing (its attributes) and calculating. This method describes
concepts more compactly and semantically more precisely. The described method
together with other methods can be used in formation process of knowledge basis. Tab. 2, Ref. 4.
Auth.
13.A5.14. Logical framework
of medical information system for cancer diagnosis. /M. Khacidze, D.
Khacidze, N. Khacidze/. Proceedings of the A. Eliashvili Institute of Control
Systems. – 2013. – # 17. – pp. 185-190. – geo.; abs.: geo., eng., rus.
The logical structure
of a medical information system is considered in the work. Software modules are
built for each logical element. These modules provide: the collection of
patient data (including the analysis that is the result of micro calorimetric
analysis), analysis of the data of a patient with the purpose to diagnose
cancer diseases. Diagnostic is basis on two methods - the new micro
calorimetric method of diagnosing and analytical-heuristic method of knowledge
representation. Fig. 3, Ref. 5.
Auth.
13.A5.15. Analysis of the matrix
one-way function and two variants of its implementation. /R. Megrelishvili/. Proceedings of
the A. Eliashvili Institute of Control Systems. – 2013. – # 17. – pp. 198-202. – eng.; abs.: geo., eng., rus.
In this article we
first announced about two versions of the new matrix one-way function (With
respect to the issue of relevance, we repeat, that the main advantage of the
matrix one-way function is high speed operation). The first variant is the
result of the natural development of cryptography and it is associated with the
use in the cryptography of new tropical arithmetic operations. The results of
their applications may be named as "Tropical Cryptography." But at
the same time, regardless of the general algebraic values "Tropical
Cryptography", it is fact, that the construction of multiplicative groups,
based on the our tropical operations, may be accepted as an integral part of
the realization of the matrix one-way function. Therefore, its adoption and an
implementation can be associated with its recognition. The second option, at
this stage, is the result of repeated analysis of matrix one-way function and
it is associated with the use of exponential one-way function within a certain
time frame (Assuming the exponential one-way function, which Diffie-Hellman
took from Number Theory). However, it is obvious that the use of the degree
(exponential) one-way function, in a certain time interval is not associated
with loss of speed for the matrix one-way function, therefore, and - for the
corresponding key exchange algorithm via an open channel communication or to
perform other actions. Ref. 9.
Auth.
13.A5.16. On
the issue of a binarization of quantitative features for logical methods of
recognition. /M. Mikeladze/. Proceedings of the A. Eliashvili Institute of Control
Systems. – 2013. – # 17. – pp. 152-156. – geo.; abs.: geo., eng., rus.
The algorithm of a
binarization of quantitative features for logical methods of recognition is
considered in the paper. The heuristic criterion of in formativeness, that
allows to receive splitting of a set of quantitative feature values into informative
intervals without the solving a complex optimization problem, is used in this
algorithm. Fig. 2, Ref. 4.
Auth.
13.A5.17. Solution of informalized problem of medical
diagnosis applied to the stomash gastritis klass of diseases. /V. Radzievski, M. Mikelaze, N. Jaliabova, D. Radzievski/. Proceedings of the A. Eliashvili Institute of Control Systems. – 2013. – # 17. – pp. 157-162. – geo.; abs.: geo., eng., rus.
The problem of
computer diagnosis of gastritis class stomach diseases, on the basis of
knowledge about the disease is considered in the paper. This knowledge includes
a description of possible alterations in the components of a sick organism, as
well as information about the relations that exist between the symptoms and
their causes. Appling this knowledge, casual analysis of alterations in a sick
organism is performed on the basis of which a final diagnosis is given. Fig. 3, Ref. 7.
Auth.
13.A5.18. Generalized description of the situation classes and expanding of the
set of the possible solutions in complex systems control. /V. Radzievski/. Proceedings of the A. Eliashvili Institute of Control Systems. – 2013. – # 17. – pp. 163-168. – geo.; abs.: geo., eng., rus.
The problem of
getting solutions for managing complex systems is considered in the paper. It
is shown that the solution of such problems is not possible by traditional
mathematical methods or techniques busting. Production models of knowledge and
recognition models are used in order to solve such problems. We also consider
the relationship between the state set the control object and the set of
possible solutions generated by the control system. It is shown that the relation
between these sets should be brought into line with the law of requisite
variety Ashby. The methods for solving this problem and recommendations are
given in the paper. Tab. 1, Ref. 8.
Auth.
13.A5.19. Production model of knowledge in the problems of medical diagnosis and
prognosis. /V. Radzievski, D.
Radzievski/. Proceedings of the A. Eliashvili Institute of Control Systems. – 2013. – # 17. – pp. 169-174. – rus.; abs.: geo., eng., rus.
It is shown in the
paper that the models of the processes of diagnosis and prediction based on the
principles of behavioral psychology are not effective enough. A model of the
process of medical diagnosis and prognosis, based on the knowledge on the
subject field is suggested. Models of deterministic, probabilistic and fuzzy
productions are used to represent knowledge. Ref. 9.
Auth.
13.A5.20.
On the molecular switches of nanoelectronics. /M. Surguladze/. Proceedings
of the A. Eliashvili Institute of Control Systems. – 2013. – # 17. – pp.
141-144. – geo.; abs.: geo., eng., rus.
One experiment for
creation of basic element of the future computing devices is described in the
work. Problems of modeling of nanoelectronic circuits are presented. The
factors needed for using supercomputers for modeling the elements of molecular
electronics are considered in the paper. Fig. 1, Ref. 2.
Auth.
13.A5.21. Model analysis of
computer network with multiple servers with limited queue length andlimited
waiting time. /T. Chumburidze,
K. Odisharia, S. Khoshtaria, Ts. Khoshtaria/. Air Transport.
– 2013. – # 1(8). – pp. 46-53. – rus.; abs.: geo., eng., rus.
The article proposed
analysis model COP with multiple servers with limited queue length and limited
time of waiting gives possibility to analyze how effectively existing COP can
serve current requirements for the maintenance of a certain level of intensity,
or for specified requirements of service, what should be the required server
resources and the main characteristics of productivity and reliability design
of the COP. Ref. 4.
Auth.
13.A5.22. Functioning of computer
networks in separate request servicing mode. /T. Chumburidze, K. Odisharia, Ts. Khoshtaria/. Air
Transport. – 2013. – # 1(8). – pp. 54-63. – rus.; abs.: geo., eng., rus.
The author introduces
analytical models intended to appraise efficiency of main parameters of
computer system functioning in different rates of service requirements. Ref. 4.
Auth.
13.A5.23. Management of information processes as a guarantee of economic security
of a modern corporation. /G. Teplinsky, V. Novak/. Air
Transport. – 2013. – # 1(8). – pp. 70-77. – eng.; abs.: geo., eng., rus.
In the article
certain aspects of management of information processes of a corporation’s
economic security are analyzed, which relate to structuring of information
environment on the basis of the balanced scorecard system, and the use of this
methodology in the construction of the complex system of economic security of a
modern corporation is considered. Ref. 5.
Auth.
13.A5.24. Towards mathematical
modelling of mass service processes. /M. Akhobadze,
Generally, each case at the
Court is preceded by preparatory work. If the number of judges, court halls or
budget amount is not sufficient, resulting waiting list will require certain
time to be considered. On the other hand, according to the law, each particular
case should be considered within a certain period after its starting.
Obviously, during the process of new court planning or existing court
functioning, it is desirable to know in advance whether the time period for
each case discussion is conformable to the terms defined by the law for the
given number of judges, court halls or budget amount. A lot of mathematical
modelling tasks for mass service as well as for the Courts are reduced to the
solution of homogeneous equation with two variables, the precise solution of
which is often impossible. The article considers the mathematical model of the
Courts functioning as a three-phase system of mass service, where, the first
phase (subsystem) reflects the specificity of the judge’s activities, the
second phase - budget amount and the third – Court halls completeness. This
mathematical model represents systems of differential and integral equations.
The paper considers the solution of a mathematical model (homogeneous equation
with two variables) in the form of a row that enables identification between
the real process and appropriate mathematical model, by the modern informatics
technology and software achievements, thus providing the imitation of Courts
normal functioning. Generally, a lot of mathematical modelling tasks are often
reduced to the solution of homogeneous equation with two variables, the precise
solution of which is often impossible. The article considers the solution of
such equations in the form of a row that provides identification between the
real process and appropriate mathematical model for each particular case and
process by the modern informatics technology and software achievements. Ref. 4.
Auth.
13.A5.25. An optimal control
problem for a nonlocal boundary value problem. /D.Devadze, M. Dumbadze/. Bulletin of the
In the present paper the
Bitsadze–Samarskii boundary value problem is considered for a quasi-linear
differential equation of first order on the plane and the existence and
uniqueness theorem for a generalized solution is proved; the necessary (in the
linear case) and sufficient optimality conditions for optimal control problems
are found. The optimal control problem is posed, where the behavior of control
functions is described by elliptic-type equations with Bitsadze–Samarskii
nonlocal boundary conditions. The necessary and sufficient optimality
conditions are obtained in the form of Pontryagin’s maximum principle and the
solution existence and uniqueness theorem is proved for the conjugate problem. Ref. 13.
Auth.
13.A5.26. An algorithm of the
solution of an optimal control problem for a nonlocal problem. /D. Devadze, V. Beridze/. Bulletin of the
The paper deals with optimal
control problems whose behavior is described by Helmholtz equations with
Bitsadze-Samarski nonlocal boundary conditions. A theorem about a necessary and
sufficient condition of optimality is given. A numerical algorithm of the
solution of an optimal control problem by means of the Mathcad package is
presented. Fig. 2, Ref. 16.
Auth.
13.A5.27. The unification of bibliometric indices to assess the level of scientific
productivity at the micro- and meso-levels. /L. Chobanyan,
The notion of effective individual indices of
citation has been introduced. A comparison of the effective indices with the
traditional ones has been carried out. The appropriateness of using the
effective indices in comparing research activities of different scientific
directions has been substantiated. Tab. 1, Ref. 6.
Auth.
13.A5.28. Space-time coding in MIMO systems. /Sh. Kvirkvelia, J. Beridze/. GEN. – 2013. – # 4. – pp. 26-29. – eng.; abs.: eng.
With
the help of program MatLab, MIMO channels with STBC for the Wimax standard
model by using of BPSK, QPSK, QAM16, 64, 128, 256 types of modulation are
estimated. The characteristics of spectral efficiency and the error rate were
obtained. It is shown that, at high SNR, the use of QAM modulation is the most
efficient. Tab. 3, Fig. 2, Ref. 3.
Auth.
13.A5.29. Business
process management with radio-frequency identification (RFID) and biometric
technologies. /G. Datukishvili/.
Over the past years, advances in science
such as information technology, have become equal to revolutionary explosions.
The only weak link in this process is a man, who is the only hinder in the
development of information technology. Radio-frequency identification
technologies fully satisfy the automated control system where there is the need
for recognition of the object and registering it in real time. Technology based
on radio-frequency identification is called RFID technology. This issue
describes the process in which the identification of human resources with the
help of biometric technology is carried out in particular with the help of
fingerprint scanner. In my opinion, in the organization, where the staff daily
uses various objects or office equipment, between RFID and biometric identifier
can be considered to be the best decision. Ref. 3.
Auth.
13.A6.1. For logical conditionality. /E. Ormotsadze/. Goni. – 2014. – # 1. – pp. 152-154. – geo.; abs.: geo., eng.
Logical conditionality is a kind of determination.
It belongs to the abstract sphere; it is a logical process along which
the result is determined on the basis of logical relations of thinking.
Logical determination takes place in all forms and law of thinking.
Logical necessity is the severest necessity to determine the way of
internal refusal. Logical necessity is of categorical character.
It does not have degrees, thus it is the absolute necessity. The real
necessity is a relative necessity. Ref. 3.
Auth.
B1. Mathematics. Mechanics.
Physics. Cybernetics
13.B1.1. About some issues of turbulent flow in boundary layer.
/T. Magrakvelidze/. Proceedings of the A.
Eliashvili Institute of Control Systems. – 2013. – # 17. – pp. 81-88. – geo.; abs.: geo., eng., rus.
Some problematic
issues in the boundary layer of turbulent flow are considered in the paper. It
is suggested that modified G. Gips distribution can be used to describe
turbulent pulsations. Way pulsations in the turbulent flow are obtained on the
basis of the formula for calculation side: 
, where 
is a dynamic
velocity, 
- dimensionless
distance from the wall. Obtained formula is in a good agreement with J. Laufer
experimental data. Velocity distribution unified formula is offered both for
turbulent bulk and viscous/buffer layers. Fig. 3, Ref. 13.
Auth.
13.B1.2. The analysis of movable device vibrations and
their utilization. /T. Trokashvili/. Proceedings of
the A. Eliashvili Institute of Control Systems. – 2013. – # 17. – pp. 20-21. – geo.; abs.: geo., eng., rus.
The paper presents
frequency characteristic feature of the noise while engine processing. The
scheme of the main signal of noise is shown in the work. Research is carried
out by the example of the reduction engine. It is shown that it is possible to
define the main frequency (number of rotations) f and the signal of errors ∆f. The results can be utilized in diagnostics,
in the engine and generator managing. Fig. 5, Ref. 3.
Auth.
13.B1.3. The active linear filters shifting into the
resonance frequency. /T. Trokashvili, G. Urushadze, N. Shengelia/. Proceedings of the A. Eliashvili Institute of Control Systems. – 2013. – # 17. – pp. 98-100. – geo.; abs.: geo., eng., rus.
The paper presents
the analysis of the complex signal into constituents. The scheme that is
constructed using the active linear filter is shown in the paper. It’s possible
to single out the main signal. The frequency of the main signal can be changed
in a certain range. The scheme of filter shifting into resonance frequency is
also shown in the work. Fig. 4, Ref. 3.
Auth.
13.B1.4. Characterization of a triange of minimal perimeter inscribed into the given triangle. /G. Tsuleiskiri, L. Asatiani, L. Kisishvili/. Building. – 2013. – # 2(29). – pp. 27-31. – geo.; abs.: geo., eng.
The theorem of
orthocentric triangle of the given triangle proven by the Hungarian
mathematician Lipot Fejer (born 1880) is applied to solve the problems. Fig. 6,
Ref. 4.
Auth.
13.B1.5. Rotation of a point around an arbitrary point on a plane. /B. Maspindzelashvili, G. Kirmelashvili/. Building. – 2013. – # 2(29). – pp. 65-71. – geo.; abs.: geo., eng.
The rotation of any
point around an arbitrary point on a plane is considered. In particular,
rotations are considered within both the point of origin and the core point
different from it. The point coordinates for respective angles of rotations are
determined. The proposed determination of point locations can have a definite
application in construction, in the solving of geodesy, analytic and
descriptive geometry and other practical problems. Fig. 5, Ref. 2.
Auth.
13.B1.6. Stressedly deformed state of a body stretched under action of load
and compressed by lateral volume forces. /N. Berishvili, R. Giorgobiani, G.
Javakhishvili/. Building. –
2013. – # 2(29). – pp. 129-132. – geo.; abs.: geo., eng.
The work deals with
the determination of the stressedly deformed state of a deformable body. In
contrast to the classical concept of similar problem, volume forces generated
by load in transverse direction are taken into consideration. The respective
solution of the problem under consideration fully complies with major equations
of the theory of elasticity as well as the relevant boundary conditions of body
attachment. Fig. 1. Ref. 3.
Auth.
13.B1.7. On some properties of periodic functions. /S. N. Bliadze, S. S. Bliadze/. Air Transport. – 2014. – # 1(9). – pp. 19-25. – rus.; abs.: geo., eng., rus.
Methods,
the use of which enables a simple and comprehensive analysis of a function for
its periodicity and period, are presented. Fig. 2, Ref. 3.
Auth.
13.B1.8. On the Wiener processes in a
Banach space. /B.
Mamporia/. Bulletin of the
The analysis of the definition of Wiener
process in a Banach space is given. It considers the definitions of generalized
Wiener process and Wiener process in a weak sense. The representations of them
by the sums of identically distributed independent (weakly independent)
Gaussian random elements are given. Ref. 6.
Auth.
13.B1.9. Equilibria of constrained point
charges. /G. Khimshiashvili/. Bulletin of the
We discuss analogues of the famous Maxwell
conjecture on the number of equilibria of point charges in certain situations
where the positions of charges are subject to quadratic constraints. Two types
of quadratic constraints are considered in some detail: point charges placed at
the vertices of polygonal linkage, and point charges confined to a circle. We
show that the Coulomb potential in both cases is a Morse function on the
corresponding moduli space and present several results on the number and Morse
indices of its critical points. Detailed results are obtained if the number of
charges does not exceed four. For quadrilateral linkage, we establish that the
number of equilibria does not exceed eight. As a by-product, we show that any
convex configuration of such a linkage is an equilibrium of Coulomb potential
for some collection of charges at the vertices. For three charges on the
circle, we give a geometric characterization of configurations which are
equilibria of Coulomb potential for some collection of charges. Ref. 9.
Auth.
13.B1.10. On the convergence of
the crank-nicolson semidiscrete scheme for an evolutionary equation in Banach
space. /J. Rogava, D. Gulua/. Bulletin of the
The Crank-Nicolson semidiscrete scheme is
considered for an evolutionary equation with a linear unbounded closed operator
A in the Banach space. It is proved that if (a) the spectrum of the
operator A is contained in a symmetrical open sector with an angle
opening less than π, lying in the right-hand half-plane; (b) for any point
z (z ≠ 0) not belonging to this sector, the resolvent
norm is not greater than c/ | z |; (c) the second derivative of a solution satisfies the Lifshitz condition.
Then the error of an approximate solution is not greater than 
, where τ is a grid step, while ε0 and ε1 are the disturbance
of the initial vector and the right-hand part, respectively. Ref. 16.
Auth.
13.B1.11. On hierarchical
models of prismatic shells within the framework of the Chandrasekharaiah-Tzou
nonclassical theory of thermoelasticity. /G.Avalishvili, M. Avalishvili/. Bulletin of the
In the present paper the Chandrasekharaiah-Tzou
dynamical nonclassical model for thermoelastic prismatic shell is studied. The
initial-boundary value problem corresponding to the dynamical three-dimensional
model is investigated applying variational approach in suitable spaces of
vector-valued distributions. A hierarchy of two-dimensional models is constructed
for thermoelastic prismatic shell, when surface forces and the normal component
of heat flux are given along the upper and the lower faces of the prismatic
shell. The two-dimensional initial-boundary value problems corresponding to the
models of the hierarchy are investigated in suitable function spaces. Moreover,
the convergence of the sequence of approximate solutions of three space
variables, constructed by means of the solutions of the reduced two-dimensional
problems, to the exact solution of the original threedimensional problem is
proved and under suitable regularity conditions the rate of convergence is
estimated. Ref. 15.
Auth.
13.B1.12. Rigorous theoretical
arguments for suppression of the Lamb shift. /A. Khelashvili, T. Khachidze/. Bulletin of the
The main purpose is to elucidate the role of
the hidden symmetry of the Dirac-Coulomb problem and to show algebraic
possibilities for derivation of spectra. It is shown that the requirement of
invariance of the Dirac Hamiltonian under some kind of
Auth.
13.B1.13. Classical motion of a
test particle in the Bonnor spacetime based on Lyra manifold. /M. Yavari/. Bulletin of the
The exact solutions of the vacuum field
equations for the Bonnor spacetime in presence of a massless scalar field
within the framework of the Lyra manifold are studied. Also, the classical
motion of a test particle in this spacetime by using the Hamilton-Jacobi method
is investigated. Ref. 13.
Auth.
13.B1.14. On Poncelet porism for biquadratic
curves. /G. Khimshiashvili/. Bulletin of the
Two seemingly unrelated topics having in fact
a common feature that they naturally lead to consideration of certain involutive
transformations of biquadratic curves are discussed. The first topic is
concerned with the so-called Darboux transformation on the moduli space of
planar quadrilateral linkage. We explain how this transformation can be related
to involutions of an appropriate biquadratic curve and present a natural analog
of Poncelet porism in this setting. The second topic is concerned with the
uniqueness of solution to the Dirichlet problem for string equation in bounded
domain. If the boundary is a convex biquadratic curve we show that an analog of
Poncelet porism for the so-called John’s mapping can be established in the same
way as for Darboux transformation. Ref. 7.
Auth.
13.B1.15. Approximation by
trigonometric polynomials in subspace of weighted grand Lebesgue spaces. /N. Danelia, V.Kokilashvili/. Bulletin of the
The paper presents the direct and inverse
theorems of trigonometric approximation in closure of 
by the
norm of weighted grand Lebesgue spaces. The rate of deviation by summation
means of Fourier trigonometric series is derived. Ref. 7.
Auth.
13.B1.16. Lattice
isomorphisms of free nilpotent Lie algebras. /A.Lashkhi/. Bulletin of the
K denotes a commutative domain
with unit. 
denotes
the Lie algebra over 
; L(L) the lattice of all
subalgebras 
. Let 
and 
be the linear algebras over the rings 
and 
, respectively, and 
be an
isomorphism. A bijection 
will be called a
σ – semilinear quasimorphism
if for any x1, 
and α, 
there exists 
such that 
, 
. Let ƒ:L(L)→L(L1) be a lattice isomorphism, where L and L1 are torsion-free nilpotent Lie
algebras of class 2 over the principal ideal domains 
and 
, respectively. If dim L ≠ 3, then L
and L1 are semilinear isomorphic. Let ƒ:L(L)→L(G) be a lattice isomorphism, L and G be
Lie algebras over the principal ideal domains 
and 
, respectively. If L is a free (nonabelian) polynilpotent or free
Lie algebra and dim L ≠ 3, then 
and 
. Ref. 13.
Auth.
13.B1.17. On the estimation of
a maximum likelihood of truncated exponential distributions. /G. Lominashvili, M. Patsatsia/. Bulletin of the
The problem of estimation of parameters of
truncated exponential distribution by the maximum likelihood method is studied.
It is shown that maximum likelihood equation for truncated exponential
distribution has a unique solution which gives an asymptotic effective
estimator of the parameter. Ref. 4.
Auth.
13.B1.18. “Anomalous” heat
capacity of the stoichiometric lanthanum dihydride. /N. Namoradze,
Two models aimed to describe the
experimentally registered difference between the heat capacity temperature
dependences C(T) of dihydrides LaH2 and CeH2,
denoted as C(T)[LaH2] and C(T)[CeH2]
are compared. In both models the specific features of the C(T)[LaH2]
are ascribed to the transfer of a number of hydrogen atoms from energetically
favorable tetrahedral interstitial positions to the less-favorable octahedral
interstitial positions. One of the models allows random transitions from
tetra-positions into octa-positions of a number of separate H-particles, while
the second model implies that in the fcc crystalline lattice of metal
atoms linear hydrogen-metal atomic complexes - “H-M-H dumbbells” are formed. In the ground state
they are oriented along [111]-type crystallographic directions and at
temperature increasing they are reoriented along the [100]-type
crystallographic directions. Existing experimental results give preference to
the first model. It is suggested that analogous tetra-octa transfers are not
realized in cerium dihydride due to the specific details of the H-H
interactions in the cerium lattice. Fig. 6, Ref. 7.
Auth.
13.B1.19. Calculation of the
gravitoelectromagnetism force for the O’Hanlon-Tupper spacetime. /M.Yavari/. Bulletin of the
By using the threading splitting concepts for
a time dependent spacetime, the time dependent quasi-Maxwell equations in terms of the gravitoelectromagnetism
fields are discussed. The motion of a test particle in the O’Hanlon-Tupper spacetime
by applying the Hamilton-Jacobi method and the quasi-Maxwell equations is
studied. Also, the gravitoelectromagnetism force in this spacetime is
calculated. Ref. 21.
Auth.
13.B1.20. Comparison of
analytical and numerical methods for assessment of stress-strain state of the
massif around the tunnel of noncircular cross-section. /L. Japaridze/. Bulletin
of the
In the recent years in the world practice of
calculation of the underground structures numerical methods have almost displaced the
analytical methods of continuum mechanics. While numerical methods are
indispensable for some intricate problems of geomechanics, the analytical
methods of the theory of elasticity for calculation of tunnels should be a
subject of further use and development. Parallel solution of specific problems
with the use of one of the commercial computer software and N.Muskhelishvili’s
method of Theory of Elasticity was conducted. Using the example of tunnel of
rectangular cross-section, it was shown that the analytical solution can be
more accurate and comparatively easier over numeric especially using the well-known
program “Mathlab”. Fig. 7, Tab. 1, Ref. 6.
Auth.
13.B1.21. Uncertainty of raw data in systems engineering. /A. Prangishvili, O.
Namicheishvili, G. Zhghenti, L. Cholikidze/. GEN. – 2013. – # 3. – pp.
9-16. – geo.; abs.: eng.
The problem of
choosing the law of probability distribution of the random variable by the
criterion of maximum entropy of this quantity is examined as an isoperimetric
problem of variational calculus. Ref. 6.
Auth.
13.B1.22. Formal neuron adaptation using the Widrow-Hoff algorithm. /A. Prangishvili, O.
Namicheishvili, M. Gogiashvili/. GEN. – 2013. – # 3. – pp. 16-22. –
geo.; abs.: eng.
The article deals
with the study on the methods of adaptation of the formal neuron paper when
this neuron is used as arestoring device of the true value of the binary
signal. It is understood that, to the formal neuron inputs different versions
of the same binary signal are fed with varying reliability and the neuron
should restore the true value of the start signal in these versions. The adaptation
of the formal neuron becomes essential. The adaptation is interpreted as
the process that changes the weights of formal neuron inputs for adjusting them
in accordance with the error probability of input channels. The task of the
control is to ensure the higher impact of more reliable inputs on the accepted
decision (i.e. on the decoded signal) as compared to less reliable inputs.
However, the adaptation can be implemented in different ways, by means of
different algorithms. In this article, we consider the continuous adaptation.
It is proved that, in the case of continuous adaptation without feedback in
accordance with the Widrow-Hoff algorithm, the weights are formed in proportion
to those which deliver the maximum of Mahalanobis distance. Ref. 6.
Auth.
13.B1.23. Linearization of
the solution of Langevin’s equation in magnetic liquids.
/K. Kotetishvili, G. Chikhladze/. Nano
Studies. – 2013. – # 7. – pp.
225-228. – eng.
In the paper, the wide range of rotation frequencies is
considered for Be, including the typical f0 for the
ordinary MRI. Larmor’s frequency is 8.5MHz at about 0.2T and rises up to
14.9MHz at about 0.35T. The amplitude of Be is located within 1–10%
for B0, which is relatively wider, than the amplitude of the typical
B1, although it is of the same order that is the magnetic field
created by nano-particles. Interaction with transversal magnetization is
reached by selection of the frequency of excitement for Be(w), being of the same order that is the
inverse t time of substance relaxation. For typical magnetic
nano-particles in bio-medical works its value (approximately one microsecond)
is given. Sick disturbances in the magnetic field signals along ix
and iy were considered, gradually transferring into p/2 space (rotates) and creating the rotating
field in transversal xOy plane. Change in rather big signals is considered
along iz (hz=0). For the field of DC we got the enclosure
(0.1–0.35T) in the results, where the nano-particles of 4nm radius of the
magnetic nuclei (being the contrast agents of the ordinary MRI) are saturated
up to 90%. At B0=0.35T, L(α0)=0.9. Ref.
3.
Auth.
13.B1.24. Research on water-repellant nanofiber spun by electro bubble spinning
method. /M. Iwamoto, H. Ino, T. Kimura, Y. Kishimoto/. Nano Studies. – 2013. – # 8. – pp. 29-34. – eng.
Recently, water repellent materials have been attracted
much attention in academic and industrial fields. In this research, the
nanofiber nonwoven fabric that has water repellency was tried to spun by making
fine structure surface. In order to make them, the nanofiber that contains a
lot of fine particles on the surface of nanofiber is spun and treated with a
fluorochemical water repellent agent. The electro-bubble spinning method that
is carried out by the electrospinning from the bubbling polymer solution was
selected for this research. This method has advantages that heterogeneous
solution is continuously mixed by air bubbles and narrow nozzle, which
sometimes get stick, is unneeded. The optimal conditions for producing uniform
fine particles, and the relationship between the polymer solution composition
and water-repellent properties were investigated. Fig. 7.
Auth.
13.B1.25. Mechanical properties of
nanostructured copper coatings made by cold gas dynamic spray. /R.
Maev, V. Leshchynsky, E. Strumban, D. Dzhurinskiy, J. Kocimski, E. Maeva/. Nano Studies. – 2013. – #
8. – pp. 111-120. – eng.
Severe plastic deformation (SPD) involves very large
strains, which are imposed on a specimen without introducing any significant
changes in its dimensions. From this point of view, cold gas dynamic spray (CS)
can be considered an SPD process, in which a very large plastic strain is
imposed on the interface due to the impact of particles accelerated to
supersonic velocities. While the CS coating deposition process is widely used,
the influence of SPD taking place during the coating buildup process resulting
in forming nano-structured alloys has not been defined yet. In this study, an
attempt has been made to produce thick Cu coatings on a carbon steel substrate
using the SPD processing conditions. The nano-structured interface of Cu
coatings / carbon steel substrate exhibits very high adhesion strength and good
mechanical properties, which makes the CS technology attractive for producing
copper clad parts. Fig. 12,
Ref.
10.
Auth.
13.B1.26. Study of ion beam mixing of TE/IN and SE/IN systems
by cascade collisional mixing model.
/B. A. M. Ibrahim/. Nano Studies. – 2013. – # 8. – pp. 183-190. – eng.
Ion
beam mixing at room temperature of Te/In and Se/In bilayer systems induced by
400keV Ar+ ions from Jordan van der Graaff accelerator with fluence
ranging from 1.11∙1014–7∙1015ion/cm2
for TE/IN system and 1.35∙1014–2.3∙1016ion/
cm2 for SE/IN system. The systems are studied by means of AC
electrical resistivity measurement, which shows higher mixing efficiency of
SE/IN system than TE/IN system, and by 2MeV He+ backscattering
spectrometry, which shows the width of intermixed layers are 100 and 50nm for
SE/IN and TE/IN, respectively. Ion beam mixing for these systems are studied
theoretically by cascade collisional mixing Haff & Switkowski model, the
nuclear stopping powers are calculated by TRIM computer code. The diffusion
rate is calculated for the systems TE/IN and SE/IN, which showed that the
diffusion rate and mixed layer for the system SE/IN is greater than that of
TE/IN, which agrees with experimental results. The theoretical study is a tool
and indication to determine the efficiency of mixing between upper and lower
layers before preparation and irradiation of samples, which provide the effort
and money. Fig.
11, Ref.
10.
Auth.
13.B1.27. Once more on effective electrical charge of
atomic nuclei. /L. Chkhartishvili, T. Berberashvili/. Nano
Studies. – 2013. – #
8. – pp. 267‑272.
– eng.
Concept of the effective electrical charge of atomic
nucleus is introduced and its values are tabulated by equating the energies of
atomic electron orbitals followed from their analytical expression for the
corresponding “hydrogen-like” atom and ab
initio calculations. Tab. 1, Ref. 8.
Auth.
13.B1.28. The theory of polaron low temperature mobility.
/B. Kotia, D. Khutsishvili/.
Nano Studies. – 2013. – #
8. – pp. 289‑304.
– eng.
New exact quantum evolutional equations for equilibrium
double time correction functions (Green functions) of a small subsystem
interacting with a thermostat (boson field) is derived with the help of
Lowville superoperator formalism and by the projection operator method. The
random phase approximation (RPA) is not used at the derivation of these equations.
As an application, electron–phonon system and Froehlich polaron model is
considered. On the basis of Kubo linear response theory consistent theory of
electrical conductivity is developed. Analytical expressions for the
conductivity tensor and mobility along the all range of the low temperature and
frequencies of external electric field are obtained. In this models also
obtained temperature corrections to electrical conductivity (mobility)
conditioned by accounting initial correlations of electron with phonons. It is
obtained correct low temperature mobility of Froehlich polaron analysis, of
which by different methods led to different results. Ref. 14.
Auth.
13.B1.29. Investigation of optical transmission spectra of
TiN thin films obtained by HF-reactive sputtering method.
/A. Bibilashvili, Z. Jibuti, N. Dolidze/. Nano Studies. – 2013. – # 8. – pp. 311‑314.
– rus.
The work investigates the optical transmission of TiN
thin films (50–200nm) obtained by HF-reactive sputtering method. It describes
techniques of obtaining films and measuring of their parameters. It is shown
that with increase in thickness of films the change of light transmission in
all the measured wave-bands is observed together with a transmission sharp peak
at the wave-lengths of 293–330nm. For the assessment of stability of optical
properties of TiN films it was investigated the influence of pulse photon,
thermal and ultra-violet impact on transmission spectrum of samples. Results
show that optical parameters of the obtained films are stable. From
experimental data, the conclusion becomes that in case of TiN application as an
optical cover it is possible to expect the high stability of parameters.
Fig. 2, Ref. 6.
Auth.
13.B1.30. New mechanism for materials indentation at
nanometer and submicron scales. /A.
Gerasimov, G. Chiradze, T. Ratiani, M. Vepkhvadze/. Nano Studies. – 2013. – # 8. – pp. 327‑332. – rus.
Proposed is a new idea of changing the location of atoms in
condensed matter explaining, in contrast to molecular-kinetic theory, all the
observed experimental facts. The experimental data confirming the correctness
of the proposed concepts are presented. Fig. 5, Ref. 15.
Auth.
13.B2.1. Effect
of a fermentation technique on the phisico-chemical and organoleptic properties
of red wines. /N.
Baghaturia, T. Nanitashvili, N. Begiashvili, T. Shilakadze, B. Baghaturia/. Agrarian-economic
Science and Technologies. – 2014. – # 2. – pp. 43-49. – geo.; abs.: geo., eng.
The given article explores the effect of the
grape pulp complex fermentation procedures on the chemical properties and
quality of red wines. The above-outlined fermentation method resulted in
improved production techniques and quality of red wines. Tab. 2.
Auth.
13.B2.2. The fatty acid composition of
ordinary flax seed oil (Linum usitatissimum
l.) cultivated in
The aim of the study
was individual quantitative and qualitative determination of fatty acids in
ordinary flax seed oil (Linum
usitatissimum L.) cultivated in
Auth.
13.B2.3. Study of high-temperature processes for obtaining antimony sulfide and
metallic Sb. /J.
Bagdavadze, R. Chagelishvili, T. Gagnidze, A. Kandelaki, R.Razmadze, Z.
Tsikaridze/. Bulletin
of the
The paper deals with topical questions of the
processes of obtaining antimony sulfide and metallic Sb from ores. Problems of
both theoretical and applied character have been considered. Complete
Thermodynamic Analysis (HTA) of the heating process of Sb and Sb2S3
in vacuum (P = 0.0001 atm) and that of the systems Sb-S, Sb-S-Fe, Sb-S-Al in
different media at atmospheric pressure was made. In all the cases estimations
were carried out at temperatures from 400 to 1500 K at the pressure of 1 atm.
The results are shown in diagrams (temperature dependence of the content composition).
Experiments were conducted to obtain antimony sulfide from gold-bearing
antimony ores of Zopkhito (Georgia). The kinetics of evaporation of Sb2S3
for the ores of various fractions in a vacuum at temperatures of 500-700ºC
was studied and the optimal conditions for obtaining Sb2S3 were defined.
Antimony of technical grade (95%) was obtained from antimony sulfide by iron
reduction of antimony (in vacuum) followed by sublimation and condensation. By
heating of technical grade antimony up to the temperatures of 400ºC,
450ºC and 500ºC in vacuum (~10-5 MPa) and holding for 3 hours (with
the aim of purification of As and S), antimony of high purity (~99.2%) was
obtained. Fig. 4, Ref. 2.
Auth.
13.B2.4. Economical assessment of the production of
efficient hard alloy materials by reprocessing tungsten-containing residues. /Z. Mirijanashvili, G. Tavadze, A. Kandelaki, V. Garibashvili/. Bulletin of the
The indispensable condition for further
development of modern technologies is creation of economically justified powder
materials with special properties. These materials enable improvement of the
exploitation parameters of machines and mechanisms. Metal and ceramic
properties should be efficiently combined in these powders, enabling the
increase of the firmness along with acceptable resilience. Stages for the
technology of obtaining hard materials imply injection of metal chlorides
(WCl6, NiFeCl6 ) obtained via processing of armor-piercing missile cores and
liquid hydrocarbon compound at the temperature range of 750÷900°C;
implementation of a simultaneous process of reduction and selective carbide
formation. Consequently powder will be obtained, each particle of which will
contain tungsten carbide (WC) and cementing metal (NiFe or Co). Optimal technological parameters developed will provide nanocrystal
(<50 nM) structure of components and high degree of blending. The structure
of powders affects the increase of the quality of manufactured items as
compared to traditional materials and their items or products, where sizes of
particles are 1-4 μm. Through compaction of such powders products
with the following parameters are obtained: MRA>91; σB1100°C>400 MPa. Analysis
of the business plan data for producing powders of metal-ceramics has shown
that the technologies developed are characterized by high economical efficiency.
Namely, in the case of production of 1 kg ready-made product from an
abrasion-resistant powder. Its net price is by 20-25% less than of similar
conventional products. This is due to the simplicity of technology and high
outrun of products. Hard alloys produced by means of nanotechnologies are characterized
by homogeneous structures and significantly increased (by ~3 times) abrasion
resistance. Fig. 1.
Auth.
13.B2.5. Increase of the efficiency of direct doping of steel by modelling of the
process of carbothermal reduction of oxide systems Cr2O3-MnO-SiO2. /I. Janelidze, G. Jandieri,
The present study deals with the problem of
raising the efficiency of direct doping of steel and intensification of processes
of direct carbothermal reduction of doping elements. Solving of the task of
concentration ratios of reacting elements and optimization of temperature
limits of the reaction is considered as a rational way for the resolution of
the problem. Thermodynamic modelling of kinetics of carbothermal reduction of
metals is offered as a key to the problem solution. The problem is discussed on
the example of thermodynamic computer modelling of kinetics of carbothermal
liquid phase reduction reactions of the complex oxide system of chromium,
manganese and silica Cr2O3-MnO-SiO2. It has
been substantiated as a result of the study that in the case of choosing and
maintenance of rational temperatures of the reaction zone at direct doping of
steel it is possible to increase by 10-15% the efficiency of reduction of
chromium, manganese and silica and their uptake by the melt. It has been
established that maximum possible efficiency of direct doping of steel in
conditions of distribution at stoichiometric concentration is achieved at the
following ratio of oxide components 20-25 wt% of Cr2O3
and 80-75wt% of [2MnO+SiO2] and maintenance of temperature within 1800-1950 K
range in the liquid-phase transition layer of slag-metal. Fig. 3, Ref. 13.
Auth.
13.B2.6. On one stochastic model of a chemical reaction. /B. Dochviri, O.
Purtukhia, G.Sokhadze, G. Tkemaladze/. Bulletin of the Georgian National
Academy of Science. – 2013. – Vol. 7. – # 2. – pp. 92-96. – eng.; abs: eng., geo.
Nearly all natural reactions are of random
character. In many spheres of science and applications essential use is made of
probabilistic-statistical methods. Using these methods, probabilistic models
were constructed and fundamental results were obtained in the investigation of
the following issues of chemistry and biology: autocatalytic, unimolecular,
bimolecular, monomolecular and chain reactions, population growth, mutation,
epidemic theory, gene frequency theory, radiobiology, and so on. In this paper
a chemical reaction of first order is considered when the reagent concentration
is distributed by the binomial law. New expressions are obtained for the
mathematical expectation and variance of the reagent concentration and product.
A stochastic model of a first order reaction is constructed. Ref. 8.
Auth.
13.B2.7. Establishing taxonomy of pathogenic bacteria, causative agents of
haricot bacterioses spread in different regions of
The haricot crop is greatly damaged by
bacterial diseases, two of which stand out in
Auth.
13.B2.8. Novel biologically active
dihydroxycinnamate-derived polyether from different species of family boraginaceae./V. Barbakadze, L. Gogilashvili, L. Amiranashvili, M. Merlani, K. Mulkijanyan, A. Salgado, B. Chankvetadze/. Bulletin of the
Plants belonging to Boraginaceae family such
as Symphytum asperum, S.caucasicum, S.officinale and Anchusa
italica have been widely used in folk medicine for centuries. Recent
pharmacological studies of water-soluble high-molecular fractions from the
roots of these species revealed pronounced anticomplementary, antioxidant,
anti-inflammatory and wound healing activity. However, the active principle responsible
for the observed effects of these fractions was not known. The present special
communication summarizes the phytochemical data of the last decade on novel
dihydroxycinnamatederived polyether – the main constituent of the
above-mentioned preparations in order to identify the active principles
responsible for their biological activity. Structural analysis of constituents
of highmolecular fractions was made, based upon IR, 13C, 1H
NMR, 2D heteronuclear 1H/13C HSQC spectra, 1D
NOE and 2D DOSY experiments. The main chemical constituent of high-molecular
water-soluble preparations from S.asperum, S.caucasicum, S.officinale and
A.italica was found to be a novel dihydroxycinnamate-derived polyether,
namely poly[oxy-1-carboxy-2-(3,4-dihydroxyphe nyl)ethylene] or
poly[3-(3,4-dihydroxyphenyl)glyceric acid]. In contrast to Symphytum polymer,
most of the carboxylic groups of polymer from A. italica are methylated.
Fig. 5, Tab. 1, Ref. 22.
Auth.
13.B2.9. Numerical simulation of soil salinity reduction
caused by irrigation and introduction of sorbent. /A. Surmava/. Bulletin of the
The soil salinity change caused by the effort
of the input of external sorbent and irrigation is numerically investigated using the
nonlinear non-stationary equations of filtration and inetic equations of
chemical reaction between the carbonate sodium and calcium sulfate. The
numerical integration of the system of equation is realized by means of the
Crank-Nicolson implicit numerical scheme for 1 month interval of time and with
1 cm and 1 min spatial and temporary steps, respectively. A method widely used
in practice is thus modeled, when gypsum is introduced in the upper 20 cm layer
of soil followed by irrigation. It is shown that dissolution of sodium sulfate
in water and the infiltration of the obtained solution in the soil is the main
mechanism of reduction of sodium in the upper layer of the soil. The obtained
liquid phase of sodium sulfate is transferred to the lower layer of soil and
the increase of concentration takes place. During a month the content of the
solid and liquid phases of sodium sulfate in the upper 1 m layer decreases
about 2.5 times and rises 2 times at the levels z > 1.7 m. The calculation
shows that the use of gypsum is an additional mechanism for the reduction of
the content of salt in the soil. The process of the reduction of salt by means
of this procedure intensifies by 10%. The content of sodium sulfate obtained by
means of the chemical reaction and infiltration increases more significantly in
the upper 20 cm layer than in the lower part of the soil. At the same time, the
obtained concentration of sodium sulfate is low and it cannot cause a
noticeable degradation of the soil properties. In the upper 20 cm layer in 30
days calcium carbonate with volumetric content exceeds 10 times by the content
of sodium sulfate. Fig. 6, Tab. 1, Ref. 14.
Auth.
13.B2.10. The electrolytic dissociation of isomeric 4-Cyclohexene-1,2-Dicarboxylic
acids. /E. Kvaratskhelia, R.
Kvaratskhelia, R. Kurtanidze/. Bulletin
of the
Isomeric 4-cyclohexene-1,2-dicarboxylic acids
(cis- and trans-isomers) are widely used in various photosensitive, curable and
thermostable enzyme compositions. It should be noted that their useful
properties are directly connected with the peculiarities of the electrolytic
dissociation of these acids. In this work an analysis of the regularities of
the electrolytic dissociation of the cis- and transisomers of
4-cyclohexene-1,2-dicarboxylic acid in their dilute (0.0001 – 0.01M) solutions
were carried out with the aid of an original method of determination of the
dissociation parameters of weak multibasic organic acids with “overlapping”
equilibria previously described by the authors. Values of the usual and “partial” degrees of dissociation (the
“partial” degree term was first suggested by the authors) for all dissociation
steps, and the values of the concentrations of various ionized and non-ionized
forms of these acids, were calculated. With the aid of Debye-Huckel equation
the activity coefficients of hydrogen ions and various anions were determined.
The intervals of acid concentration in which various charged and uncharged
products of dissociation (hydrogen ions, monoanions, dianions and undissociated
acid molecules) prevail were also determined with the aid of
an original method. We suggest also simple empirical equations for fast
approximate calculation of the 
, 
, 
and pH values in
the dilute (0.0001 – 0.01M) solutions of the cis- and trans isomers of
4-cyclohexene-1,2-dicarboxylic acids. Tab. 2, Ref. 6.
Auth.
13.B2.11. Alternative technology for production of pure metals and hard alloys. /O. Mikadze, A. Kandelaki, J. Bagdavadze, L.
Rukhadze/. Bulletin
of the
An ecologically safe technology for the
production of pure metals and hard alloys is based on the conversion of oxides in the atmosphere
with ultra-low oxidation potential 
is considered in
the paper. The formation of such a medium can be reached by means of oxygen
pupm. However simplicity and acceleration of the super deep rarefraction
process in oxygen is done with initiation of chemical reaction of combustion of
easy dissociated substances, such as alcohols, by their injection into closed
contour of reactor. The drop of partial oxygen pressure (up to 10-28 atm)
provides thermic dissociation of practically any oxide. An installation for conversion processes was
constructed and methods for conducting the experiments were worked out. Complete
thermodynamic analysis of typical reducing process of oxides with ethyl alcohol
in the temperature range 300-1500 K was presented. Pure metals - Cu, Fe, Ni,
Co, Carbides, Ti, Cr and hard solutions on the basis of tungsten carbide were
obtained. The results of X-ray structureanalysis are given. Fig. 5, Tab. 2,
Ref. 3.
Auth.
13.B2.12. HPLC analysis of Poly[3-(3,4-Dihydroxyphenyl)
glyceric acid] Preparations from Symphytum asperum and Anchusa italica
(Boraginaceae) using different gel-filtration columns. /V. Barbakadze, L. Gogilashvili, L. Amiranashvili,
M. Merlani, K. Mulkijanyan, S. Gokadze, Y.Wang, J. Hoang, I. Rustamov/. Bulletin of the
The main chemical constituent of
high-molecular preparations from Symphytum asperum and Anchusa italica, poly[3-(3,4-dihydroxyphenyl)glyceric
acid] (PDPGA), according to high-performance liquid chromatography (HPLC)
gel-filtration chromatography (GFC) analysis is not covalently bound to
residual polysaccharides. It is rather difficult to completely separate the
polysaccharides from PDPGA by HPLC (GFC). This phenomenon can be explained as
due to the presence of manifold hydrogen bonds between the polysaccharides and PDPGA.
It will hold the residual polysaccharides together with the phenolic polymer during fractionation by HPLC
(GFC). The PDPGA supposedly can be formed with polysaccharides a complex
macromolecular architecture up to their supramolecular organization. Fig. 9,
Ref. 15.
Auth.
13.B2.13. Effect of combined pesticide lambda-cyhalothrin
on hydrobionts. /M. Nikolaishvili, G. Jikia, T. Mchedluri, T. Museliani, E.
Petriashvili, S.Zenaishvili/. Bulletin of the
While monitoring waters of Alazani river,
Auth.
13.B2.14. Morphological and biochemical investigation of the Bothridium pithonis Blainville, 1824 (Cestoda: Diphyllobothriidae). /L. Murvanidze, Ch. Lomidze, K. Nikolaishvili/. Bulletin of the
Cestodes are the most prevalent helminths in
reptiles and particularly in pythons. In case of intensive invasion cestodes
can cause death in pythons in the Zoological Parks.An African Rock Python (Python
sebae Gmelin, 1788) was brought to
Auth.
13.B2.15. Influence of
lanthanides and their compounds on the living organisms. /M. Kikalishvili, N. Khaburdzania, M. Kukhaleishvili/.
GEN. – 2013. – # 3. – pp. 53-57. – geo.; abs.: eng.
The article deals
with the analysis of the influence exerted by lanthanides and their compounds
on living organisms, which, according to some researchers, is caused by their
ability to substitute calcium ions in biological systems. Since lanthanides and
calcium ions have the same range of ionic radii and are characterized by
similar chemical properties, the competition is observed between them for
seizing the active centers in biopolymers. The substitution of calcium ions
with lanthanides ions may cause a dramatic change in the properties and
molecular conformation in biopolymers, which in turn will have a great impact
on their specific functions. Lanthanides and their compounds are used in agriculture.
They are essential for normal development of some plants (radish, peas etc.).
Besides, they are used in medicine for treatment of a number of diseases. Their
compounds are classified as having low toxicity and being ecologically safe.
Ref. 7.
Auth.
13.B2.16. Biological
aspects of halogens. /M. Kikalishvili,
The article deals
with the biological role of halogens and their involvement in biochemical
processes proceeding in the human body. Fluorine participates in the
development of the bone tissue and the formation of tooth enamel. Fluorine
deficiency causes dental caries, whereas the excessive exposure to high
concentrations of fluorine may result in chronic poisoning called fluorosis.
Chlorine participates in the formation of the blood buffering system, control
of osmotic pressure and metabolic processes. Bromine facilitates the inhibition
processes in the central nervous system. Iodine is important for the processes
proceeding in the thyroid gland. Ref. 5.
Auth.
13.B2.17. Cell technology
and tissue engineering: induced pluripotential stem cells. /Sh. Jinjolia/. GEN. – 2013. – # 3. – pp. 94-96. – rus.; abs.: eng.
The article deals with the issues of cell technology and tissue engineering.
It is shown that reprogramming of induced pluripotential stem cells is a
promising trend in tissue engineering. Ref. 7.
Auth.
13.B2.18. Cell technology: stem
cells. Progress and prospects. /Sh.
Jinjolia/. GEN. – 2013. – # 3. – pp. 97-99. – rus.; abs.: eng.
The article represents a brief overview of the progress in the field of
development and introduction of the methods of production of stem cells in
experimental biology, which opens up new vista for development of essentially
new efficient biomedical technologies. The discovery of stem cells is the third
most important achievement in biology after decoding of the DNA helix and the
human genome program. Ref. 5.
Auth.
13.B2.19. The impact of the
structure of basic components on the properties of sealing and screw
lubricants. /V. Farzaliyev, S. Mamedov, F.
Fatalizade, I. Guseinov, N. Ladokhina/. GEN. – 2013. – # 4. –
pp. 58-62. – rus.; abs.: eng.
For development of highly efficient plastic lubricants insoluble in oil
and gas, as disperse media the following vegetable oil was used: castor oil,
soapstok, colophony and cotton oil. The cotton oil used for this purpose was
produced by oxidation with hydrogen peroxide in the presence of oxygen. It was
revealed that the acidity of the oxidized cotton oil hardly changed as the
concentration of hydrogen peroxide increased. The viscosity of cotton oil
increased when the amount of hydrogen peroxide increased up to 35%, whereas
further increase in the amount of hydrogen peroxide hardly changed the oil
viscosity. The IR spectra of oxidized cotton oil showed the presence of a
hydroxyl group, which indicated that hydroxyl added to unsaturated bonds. The
impact of the amount of the cotton oil oxidized with 20% hydrogen peroxide on
the dropping point of the lubricant was studied. The quantity of 20% of
hydrogen peroxide was considered to be optimal. It is inferred that the
obtained lubricants can be used as sealing and screw ones. Tab. 3, Ref. 12.
Auth.
13.B2.20. Development of the
technology of purification of galvanic waste waters from heavy metals and their
concentration using the membrane method. /TS. Kurtskhalia, N. Enukidze, N. Chkheidze, Z. Simonia, M. Nadirashvili, G. Pavliashvili/. GEN. – 2013. – # 4. – pp. 99-107. – geo.; abs.: eng.
The article deals
with the development of highly efficient membrane technology of purification of
galvanic waste waters from heavy metals and their concentration. The aim of the
investigation was also designing of the appropriate device. For achieving this
aim, on of the membrane methods, electrodialysis with ion-exchange membranes
was used. The experiments were performed by using the specially designed
electrodialysis stand. The analytical instrumentation mounted on the stand
provided the control of physicochemical and technological parameters of the
process of electrodialysis. A special laboratory electrodialyzer-concentrator
was designed for the abovementioned stand. The optimal parameters of the
process were determined. Tab. 4, Fig. 1, Ref. 2.
Auth.
13.B2.21. Effects of synthesis
conditions on the nanostructure of CexZr(1–x)O2
mesoporous ceramics. /A. Bruno Costa, R. Bacani, M.
Fantini, T. Martins, A. L. M. da Silva/. Nano
Studies. – 2013. – #
7. – pp. 7-20.
– eng.
Compounds CexZr(1–x)O2
(0.5≤x≤0.9) were synthesized with Zr and Ce chloride precursors,
using the triblock copolymer pluronic P123 and HCl (2mol/L). The pH adjustment
was performed in two ways: synthesis A used 11.4mL of a NH4OH
solution added at once to the initial mixture, composed by metal precursors
and template in HCl; synthesis B was done by dripping slowly until the change
of pH value (between 3 and 6). In this work, CexZr(1–x)O2
samples synthesized by these two processes are compared. The effects of pH
values in materials characteristics were also evaluated. These samples were
analyzed by X-Ray diffraction with Rietveld refinement, and nitrogen
adsorption / desorption. In both processes, the studied materials presented
two crystalline phases of CexZr(1–x)O2 solid
solution: cubic and tetragonal. The synthesis A also presented a tetragonal
phase of ZrO2. The average crystallite size and the
Brunauer–Emmett–Teller surface area are bigger in process A. Both processes
produce samples with a
mesoporous structure. Fig.
9, Tab.
13, Ref.
29.
Auth.
13.B2.22. Effect
of propolis extract to morphology of electrospun polyurethane nanofibers. /R. Erdem, I. Usta,
Propolis-blended
nanofibrous membranes were successfully fabricated by electrospinning technique
with different composition ratios of polyurethane. Properties of the blended solutions
were investigated in terms of viscosity, conductivity and pH values. The
influences of propolis content in nanofibrous membranes morphology were
observed by SEM analysis. It was found that uniform and bead free nanofibers
were formed through the electrospinning process. Fig. 2,
Tab. 1, Ref. 8.
Auth.
13.B2.23. Ge- and In-based one-dimensional nanostructures:
Self-catalytic growth.
/D. Jishiashvili, L. Chkhartishvili, L. Kiria, Z. Shiolashvili, N. Makhatadze,
A. Jishiashvili, V. Gobronidze/. Nano Studies. – 2013. – # 7. – pp. 27-34. – eng.
The single crystal In2O3 and Ge3N4
nanowires were synthesized using the indium and germanium sources in new
ambient comprising hydrazine decomposition products diluted with 3mol.% water.
This ambient was simultaneously containing oxidizing, nitriding and reducing
active precursors. In spite of this, only In2O3 nanowires
were produced in case of In source, and only α- Ge3N4
nanowires were formed when Ge source was used. These active precursors provided
formation of volatile suboxides of source materials, their flow to the Si
substrate while a part of them was reduced to In or Ge catalyst droplets and
another part fed catalyst to grow the nanowiress trough the vapor–liquid–solid
mechanism. The growth temperature for In2O3 nanowires was
lowered down to 420oC, while the Ge3N4
nanowires were grown at 480oC which is by 370oC lower
than the temperature indicated in the literature. The nanowires were
characterized by a high crystallinity and the minimum thickness of 7nm. Fig.
4, Ref.
24.
Auth.
13.B2.24. Jet milling and thermal
processing of argentum jarosite nanoparticles for silver recycling. /V.
Leshchynsky, H. Weinert, J. Chojnacka, T. Wisniewski, C. Martinez Perez, Sh.
Tilvaldyev/.
Nano Studies. – 2013. – # 7. – pp. 35-40. – eng.
Mechanical activation of mining and
metallurgical waste by means of fine and ultrafine milling is an effective
process where an improvement in technological processes can be attained via a
combination of effects influencing the properties of powder materials. The
main advantages are decrease in the number of processing steps, improving of
reaction efficiency, and the possibility of obtaining specific products which
is difficult to obtain using traditional technological methods. Nanoparticles
are often formed by approach, which adds value to the processed solids, and,
in particular to silver jarosite. Presently, about 80% of zinc produced
globally is extracted by roasting sphalerite concentrates followed by leaching
the calcine in dilute sulphuric acid solution and eventually recovering zinc by
electrowinning. Silver is part of the zinc refinery residue, flotation tailings
and other. Mineralogical results showed that composite tailings are refractory
in nature. The development of a concept of enhancing silver recovery from the
tailings is the main aim of the paper. The efforts were focused on firstly
decomposing the jarosite minerals by mechanical activation and thermal
processing and then secondly leaching. These two steps ensured that silver
found in the zinc refinery residue and in the jarosite minerals could be
leached simultaneously. The composite tailings were milled to obtain the
nano-micro particle mixture and then heated to decompose the silver-bearing
mineral (Ag, PbFe3(SO4)2(OH)6). The
processing technology parameters of the first step were optimized and analyses
of experimental results are presented. Fig. 4, Tab. 3, Ref. 5.
Auth.
13.B2.25. Mechanisms of nucleation and
growth of metastable phases in Mg–Gd and Mg–Gd–Nd alloys. /S.
Abd El Majid, M. Bamberger, A. Katsman/. Nano Studies. – 2013. – # 7. – pp. 41-48. – eng.
High supersaturation of Mg matrix by
rare earth elements after quenching of solution treated Mg–Gd and Mg–Gd–Nd
alloys provides sequential precipitation of different metastable phases. Precipitation of β″, β′ and β1 phases
during aging was observed. Homogeneous
nucleation of fully coherent metastable β″
(Mg3RE, DO19) phase during aging is followed by its diffusional
growth, coarsening and transformation to the coherent β′ (Mg7RE, BCO) phase. This phase
transformation involves additional Mg atoms from the adjacent Mg matrix resulting in
nearly twice increase of precipitate volume. Following aging caused
heterogeneous nucleation of semicoherent β1 (Mg3RE,
FCC) phase on the β′-precipitates
accompanied by reduction of precipitate volume for about 44.5% due to release
of Mg atoms joined to Mg matrix. All
precipitates grow in {01–10} habit planes but their growth
directions are different. The combination of HRTEM, TEM with SAED and JEMS simulation
was carried out to characterize the nanometer-scale precipitates.
Microhardness measurements were performed to reveal the effect of
precipitation on the mechanical properties of the alloys. Mg–6Gd–3.7Nd based alloy reached a maximum value of
microhardness after 16 days of aging; in Mg–Gd
based alloy, microhardness increased more slowly and reached a maximum value after 64
days of aging. Fig. 8, Tab. 1, Ref.
12.
Auth.
13.B2.26. Room
temperature synthesis of monodisperse gold nanoparticles and nano-shards with
cyclic and linear diketones. /W. Peveler, I.
Parkin/. Nano
Studies. – 2013. – #
7. – pp. 49-56. – eng.
Gold nanostructures are currently an area of intense
research in academia and industry, due to their applications in bio-labeling,
nano-fabrication and detection. It has recently been established that a
room-temperature mixture of chloroauric acid and cyclic ketones in water will
spontaneously form a suspension of gold nanoparticles and nanoplates. In this
work,
it is presented the further finding that cyclic, 6-membered diketones, 1,4- and
1,3-cyclohexanedione, rapidly form gold nanostructures. 1,4-cyclohexanedione
produces a deep purple suspension of 21±5nm spherical nanoparticles within 60s,
with the reaction going to completion in 30min. 1,3-cyclohexanedione produced a
grey solution, which under examination by TEM, proved to be comprised of
polydisperse clusters of gold nano-shards. Linear equivalents to the
cyclic ketones were also examined to probe the reaction mechanism and trends
arising in a homologous series. This ketone based synthetic methodology
provides a cheap, rapid and repeatable synthesis of gold nanostructures for
application in SERS techniques or for further functionalization. Fig.
5, Tab.
2, Ref.
20.
Auth.
13.B2.27. Characterization of calcium
silicate hydrate and calcium hydroxide in nanosilica binder composites. /I. Yakub,
N. Sutan,
C. Kiong/. Nano
Studies. – 2013. – #
7. – pp. 57-62. – eng.
The aim of this study was to investigate the pozzolanic
reaction of nanosilica binder composites (nSBC) through the characterization of
the morphology of calcium silicate hydrate (C–S–H) and calcium hydroxide (C–H)
using X-ray diffraction technique (XRD) and scanning electron microscopy (SEM).
nSBC paste samples were prepared with water-binder ratio of 0.50, and 2, 3 and
5% by weight nanosilica with particle size 10–20nm were used as replacement of
binder. Powdered and polished samples were tested at 28, 60 and 90 days of
binder hydration. It was found that pozzolanic reaction exceeded hydration
process in nSBC samples where SEM images showed high density of C–S–H structure
compared to C–H. Besides, the peaks of C–H in XRD diffractogramms for nSBC were
seen to gradually disappear after 28 days. However, the patterns for C–S–H
development in all samples were not consistent due to dynamic change in its
amorphous structure. Fig. 4, Tab. 1, Ref.
14.
Auth.
13.B2.28. A
study of the effect of carbon nanotubes dispersion on the properties of
polymer composite nanofibers.
/X. Barbosa, S. Rosa, V. Capel, F. Martinez, R. Quinones, W.
Cuadrado, I. Ramos, Kh. Sotero–Esteva/. Nano
Studies. – 2013. – #
7. – pp. 77-86. – eng.
Carbon nanotubes (CNTs), with their exceptional
mechanical and electronic properties can be integrated into a variety of
devices such as chemical and biological sensors, and electromechanical
actuators. To be used effectively as reinforcement of polymer nanocomposites,
a proper dispersion of the CNTs and adhesion to the polymer matrix are
necessary. In this work, it is used a combination of computational and
experimental techniques to study the influence of the CNTs-dispersion on the
properties of the precursor solution and CNT/polymer nanofibers fabricated
using electrospinning. The dispersion was done using the ionic surfactants
sodium dodecyl sulfate (SDS) and sodium dodecylbenzenesulfonate (SDBS) in
chloroform (CHCl3). The precursor solutions for electrospinning were
prepared by adding the CNTs in their dispersion solutions to a polymeric
solution of poly(methylmethacrylate) (PMMA) in CHCl3. The
interactions between CNTs, surfactants, and polymers were simulated using the
Wolffia graphical user interface to NAMD. In the experimental part, the
properties of the solutions and fibers were analyzed using UV-visible
spectroscopy and electrical characterization. Fig. 6, Ref. 23.
Auth.
13.B2.29. Broadening the
concepts of efficient ligation and functionalization using azide-alkyne
1,3-dipolar cycloadditions for development of neotericpolymerized ionic liquids. /B. Mudraboyina,
M. Obadia, R. Sood, I. Allaoua, P. Cassagnau, E. Espuche, A. Serghei, E. Drockenmuller/. Nano Studies. – 2013. – # 7. – pp. 107-112. – eng.
AB+AB step growth polymerization of
α-azide-ω-alkyne monomers by copper-catalyzed 1,3-dipolar
cycloaddition (CuAAC) generates high molar mass linear poly(1,2,3-triazole)s
that are further quaternized to yield poly(1,2,3-triazolium) derivatives. We
have extended this approach to a broad range of 1,2,3-triazolium-based
polymerized ionic liquids (PILs) issued from chain growth and step growth
polymerization methods. Furthermore the robustness of CuAAC has allowed
developing PIL elastomers and functionalized PILs using unprecedented
approaches. The physical properties of these materials are investigated by 1^H NMR, differential scanning
calorimetry, thermogravimetric analysis, broadband dielectric spectroscopy,
rheological and permeation studies. Tuning the synthetic as well as design
strategies of poly(1,2,3-triazolium)-based materials with large variety of
derivatives accessible by anion exchange, and macromolecular engineering opens
new perspectives in the field of poly(ionic liquid)s and find applications in the
fields of energy devices, catalysts and hydrogels for medical electrodes.
Fig.
3, Ref.
34.
Auth.
13.B2.30. Effect
of preparation conditions on the morphology and mechanical behavior of
polyethylene vinyl acetate–clay nanocomposites. /A. Abdel Hafiz, A. Ramadan, A. Esawi/. Nano
Studies. – 2013. – #
7. – pp. 113-122. – eng.
In this study, the investigation of
the effect of different preparation processes, namely solution compounding,
sonication and extrusion on the structure and morphology of the nanocomposite
of polyethylene co-vinyl
acetate (EVA) and 5wt.% non-modified Na+-montmorillonite clay was
conducted. X-ray diffraction, transmission electron microscopy and tensile testing were used to characterize the morphology
of samples obtained from the different processing steps and relate this to
observed mechanical behavior. Results indicated that solution compounding,
without clay pre-dispersion, led to poor clay dispersion in the
nanocomposites. On the other hand, clay pre-dispersion followed by extrusion
enhanced clay particle
dispersion and layer delamination in the nanocomposites. Sonication was
found to lead to degradation of the nanocomposites. It is believed that
sonication promoted the intercalation of the solvent in the clay particles resulting in subsequent deterioration with heating
during extrusion. Fig. 10, Ref. 17.
Auth.
13.B2.31. Studies
on surface properties of organic polymer coatings modified with
silicone–acrylic nanopowders.
/I.
Ofat, J.
Kozakiewicz/.
Nano Studies. – 2013. – #
7. – pp. 131-140. – eng.
Surface properties of epoxy-polyester
and polyester powder coatings, both unmodified and modified with 3% of nanopowders
containing silicone–acrylic core–shell nanoparticles (size ca. 100 nm) added as
impact modifiers, were investigated using contact angle (CA) determinations,
atomic force microscopy (AFM), optical microscopy (OM), scanning electron
microscopy (SEM) equipped with EDS (energy dispersive spectroscopy) unit, and
XPS (X-ray photoelectron spectroscopy). It was found that both CA and
surface-free energy (SFE) changed significantly for modified coatings what
could be explained by migration of silicone resin contained in nanopowder to
the coating surface due to specific features of silicone polymer. The presence
of silicone on the surface was confirmed by XPS and EDS, and AFM images of
modified coatings showed structures on the surface which could be attributed to
nanoparticles of silicone resin. It was also found that the surface properties
were very much affected by the chemical structure of silicone resin. Fig.
8, Tab.
4, Ref.
16.
Auth.
13.B2.32. Polymeric biocomposites with
nanocellulose.
/A. Masek,
M. Zaborski/. Nano
Studies. – 2013. – #
7. – pp. 141-144. – eng.
Presently, the most commonly used cross-linking agent for
elastomers is sulfur, which is not an environmentally friendly additive.<0}
{0>This
study presents the use of amino acids as natural cross-linking agents for
epoxidized natural rubber.<0}
We evaluated the cross-linking performance of the investigated agents o{0>n
the basis of the cross-linking density and mechanical properties of natural
rubber ENR(50) vulcanizates.<0} {0>We
conclude that some amino acids may serve as cross-linking agents for natural
rubber. Fig. 1, Tab. 2, Ref.
4.
Auth.
13.B2.33. Influence of R and R′
alkyl groups (–CH3 or –C2H5) on the properties
of aerogels synthesized from RSi(OR′)_3 precursors. /T.
Matias, M. Ochoa, A. Portugal, L. Duraes/. Nano
Studies. – 2013. – #
7. – pp. 145-160. – eng.
In this study, the influence of
the R and R′
groups (methyl, ethyl) of RSi(OR′)3
precursors on the sol–gel
synthesis process and properties of organically modified silica aerogels is
analyzed. Published works, in which the authors used methyltrimethoxysilane
(MTMS), ethyltrimethoxysilane (ETMS), methyltriethoxisylane (MTES) and
ethyltriethoxysilane (ETES) as precursors, were reviewed. The synthesis
conditions and materials properties in the literature were compared to the
authors’ experimental results. R and R′ groups affect the
hydrolysis/condensation reaction rates hence the growth of the solid network.
Although with identical chemical structures, the microstructure and relevant
physical properties change substantially. Aerogels with unique insulation
properties can be obtained from MTMS or MTES. They exhibit high porosities and
contact angles, and very low densities and thermal conductivities. ETMS and
ETES precursors only produce porous gels when combined with
tetra-alkylorthosilicates (TMOS/TEOS) or MTMS, as the R size (ethyl) induces
phase separation and growth of the solid network in preferential directions,
giving more linear and compact structures. Fig. 4, Tab. 4, Ref. 28.
Auth.
13.B2.34. Press forming of chicken
feather fiber (CFF) reinforced bio-composites: Effects of CFF volume on
mechanical and thermal properties. /M. Ozen, M. Yuksek, M. Uzun, E. Sancak,
In this study,
the bulk moulding compound (BMC) has been employed to develop novel chicken
feather fibres (CFF) reinforced composites. Glass fibres have been also used
as fibre reinforcement. In BMC production, polyester resin, hardener, filling
agents, glass fibres and CFF at different ratios were blended. The prepared
BMC paste was pressed at 140oC temperature and then the paste was
cured and converted to composite structures at 30s under 10bars press. The
mechanical properties of developed composite specimens were tested and
analysed. The main aim was to determine the effect of CFF reinforcement on the
mechanical and thermal resistance properties of the thermoset composites. The
incorporation of CFF, glass fibres, polyester resin and calcite into composite
structures by BMC method has been attempted to produce for the first time and
studied their properties. The results show that the CFF reinforcement have a
critical importance for the tested composites in terms of tensile strength,
Young modulus and Charpy impact properties. It has been demonstrated that
thermal conductivity of composites changed notably due to the fibre
reinforcements.
Fig. 5, Tab. 6, Ref.
12.
Auth.
13.B2.35. Influence
of hexagonal boron nitride nanocrystals on wear processes
in brass. /L.
Chkhartishvili, M. Darchiashvili, A. Gachechiladze, B. Margiev, L. Rukhadze, O.
Tsagareishvili/.
Nano Studies. – 2013. – #
7. – pp. 169-176. – eng.
There is investigated influence of the particulates of
hexagonal boron nitride (h-BN) on wear processes in brass. The studies are
performed on samples of brass-based composite material, in which chemically
synthesized nanopowdered h-BN is used for antiwear modifier. Fixation of these
particles in matrix is achieved by introducing the copper-plated h-BN
nanopowder in brass-melt. Structural studies show that h-BN particles are
almost uniformly distributed within the brass-matrix. Wear processes are
studied by determining weight losses at different loadings. It is shown that
insertions of nano-crystalline h-BN (with Young’s modulus much lower than that
of brass) can change the wear mechanism and significantly reduce the intensity
of wear in brass. Fig. 7, Tab. 1, Ref.
35.
Auth.
13.B2.36.
Fluorescent nanoparticles of
anthracene and BİS-MSB. /M. Kakuichi, K.
Kasatani, Y. Morita, H. Okamoto, J. Kawamata/. Nano
Studies. – 2013. – #
7. – pp. 177-184. – eng.
Fluorescence behavior of nanoparticles of two compounds,
anthracene and 1,4-bis(2-methylstyryl)benzene (bis-MSB), was studied. Doped
nanoparticles were also studied. Transparent organic nanoparticles dispersed
in water were prepared by reprecipitation method. Poly(vinyl alcohol) was
added into water to improve stability of organic nanoparticles. Fluorescence
spectra and fluorescence quantum yields were measured by an absolute
photoluminescence quantum yield measurement system. Fluorescence lifetimes were
measured with a combination of a femtosecond Ti : sapphire laser and a streak
camera. Fluorescence behavior of anthracene nanoparticles doped with perylene,
anthracene nanoparticles doped with naphthacene, bis-MSB nanoparticles doped
with perylene, and bis-MSB nanoparticles doped with naphthacene, was
measured. When doping nanoparticles with a dopant, fluorescence of
nanoparticles was quenched and strong fluorescence of dopant was observed.
Fluorescence quantum yields of both anthracene nanoparticles doped with naphthacene
and anthracene nanoparticles doped with perylene were as high as 0.75. Fig.
13, Tab.
4, Ref.
11.
Auth.
13.B2.37. Effect of chromate on DNA of Arthrobacter globiformis. /O. Rcheulishvili, N. Datukishvili, I. Gabriadze, T. Kutateladze,
D. Pataraya, M. Gurielidze, N. Metreveli/.
Nano Studies. – 2013. – # 7. – pp.
193-200. – eng.
Arthrobacter
globiformis
151B –
an aerobic, Gram-positive, Cr(VI)-reducing bacterium isolated from the polluted
basalts from Georgia was screened for the presence of plasmid DNA. It was shown
that the tested bacteria strain harbored a plasmid. The yield of plasmid DNA estimated by
agarose gel electrophoresis did not change practically during the growth of
bacteria (14, 24, 38, and 62 h), however it was missed completely after the
exposure of bacterial cells to Cr(VI). Besides the dose-dependent decrease of
the amount of the extracted chromosomal DNA was observed on the electrophoregrams,
while the Cr(VI) concentration increased within the range of 0 to 200 mg/L. At
the same time, the bacterial cells maintained the high survival at this concentration
range of Cr(VI). Fig.
6, Ref. 18.
Auth.
13.B2.38. Porometry of zeolites with
three-dimensional net of channels. /A. Kapanadze, G. Rtveliashvili, G. Tabatadze/. Nano
Studies. – 2013. – # 7. – pp.
207-212. – rus.
It is shown that in zeolites NaX and NaA with
three-dimensional net of channels with diameters of about 10Ao, it
is possible to introduce under the high pressure the melted metals, such as Hg,
Ga, In, Bi, Pb, and Sn. It is also shown that the metal percolates by the
hopping when reaching the critical pressure, which value is in good accordance
with that from the porometric formula. Fig. 3, Tab. 1, Ref. 5.
Auth.
13.B2.39. Thermal conductivity of b-rhombohedral
boron doped with metals in nano-sized interstitials. /L. Chkhartishvili, I. Murusidze/.
Nano Studies. – 2013. – # 7. – pp.
221-224. – eng.
The frequencies of vibrations associated with metal impurities
in nano-sized interstitials of b-rhombohedral boron lattice
are theoretically determined to be above the intrinsic phonon bands – in
spectral region from 1080 up to 4380cm(−1) – and, consequently, can be
attributed to localized modes. At high levels of doping, these localized
vibrations can be presumed to reduce the thermal conductivity significantly
improving the thermoelectric figure-of-merit of the material. Tab.
2,
Ref.
8.
Auth.
13.B2.40. Modification
of the properties of lead selenide layers at their nanothickness.
/A. Pashaev, O. Davarashvili,
M. Enukashvili, Z. Akhvlediani, R. Gulyaev, L. Bychkova, V. Zlomanov/.
Nano Studies. – 2013. – # 7. – pp.
233-240. – eng.
Paper deals with the peculiarities of
creation of effective “negative” pressure and the increase in the forbidden gap
width in PbSe nanolayers in connection with the formation of the
quasi-dielectric state at their appropriate doping. During the formation of
epitaxial layers, particular emphasis was placed on the impact of layers
thickness as well as of growth temperature and rate on the attainment of high
“negative” pressure. When determining the forbidden gap width, the optical
transmission spectra were processed by a model of the Fabry–Perot
interferometer. At high concentration of free current carriers, the absorption
on them and their degeneracy were taken into consideration. Fig.
3,
Tab.
1,
Ref.
9.
Auth.
13.B2.41. Synthesis of gold nanoparticles by new strains of
thermophilic actinomycetes.
/T. Kalabegishvili, E. Kirkesali, E. Ginturi, A. Rcheulishvili, I. Murusidze,
D. Pataraya, M. Gurielidze, N. Bagdavadze, N. Kuchava, D. Gvarjaladze, L.
Lomidze/. Nano Studies. – 2013. – # 7. – pp. 255-260. – eng.
The synthesis of gold nanoparticles by
two novel strains of thermophilic actinomycetes Thermoactinomycete spp. 44Th and Thermomonospora spp. 67Th isolated at the temperature
55oC from different soils in Georgia were studied. A complex of
optical and analytical methods was applied for investigation of the
experimental samples of actinomycetes with gold nanoparticles after exposure to
chloroauric acid for different time intervals. The formation of gold
nanoparticles was detected by presence of surface plasmon peaks at 530 nm in
UV–Vis spectra and also visualized by TEM images. The results of the studies
showed that after 1.5–2 days of reaction times the extracellular formation of
nanoparticles with mainly spherical shape and sizes in the 5–60 nm range with
an average in the 20–30 nm range takes place. AAS was applied for determining total gold concentrations in
the bacterial biomass. The AAS results show that the total concentration of the
gold accumulated by bacterial biomass increases rapidly at the beginning while
after this rapid phase its change with time is insignificant. Fig.
5, Ref.
12.
Auth.
13.B2.42. Photochromic
liquid-crystal multifunctional nanomaterials. /K. Japaridze, L. Devadze, J. Maisuradze, G.
Petriashvili, Ts. Zurabishvili, I. Mzhavanadze, N. Sepashvili/.
Nano Studies. – 2013. – # 7. – pp. 261-266. – eng.
The work describes a new method of
creating polymer multifunctional smart nanomaterials based on composition
consisting of nemato-chiral liquid-crystal doped with photochromic spiropyrans.
Choice as a dopant spiropyran with long alkyl chain at the nitrogen atom
increases effective photosensitivity compared with the system containing
spiropyran with a short chain. Merocyanine form photoinduced by ultraviolet
light from spiropyran with long alkyl chain, which is an amphiphilic molecule
with zwitterionic lyophilic head and lyophobic tail, is selforganized as
micelles in the nematic-chiral liquid-crystal. Formation of micelles disturbs
thermodynamic equilibrium. The new formed merocyanine molecules are added to
already existing photoexposed molecules for restoration the equilibrium. It
increases the absorbing centers ultimately. The phenomenon of increase
effective photosensitivity was observed as in composition either in polymer
films produced by the improved method of microcapsulation. Photochromic
liquid-crystal polymer films with improved photosensitivity produced by us
would be perspective multifunctional nanomaterials for the applications in
various fields of nanotechnology. Fig. 5, Ref. 12.
Auth.
13.B2.43. Formation and investigation of thin oxide films for nanoelectronics. /A. Bibilashvili, Z. Jibuti, N. Dolidze, G. Skhiladze/. Nano
Studies. – 2013. – # 7. – pp. 287-294. – rus.
The basic element of the majority of
nanoelectoronic devices is a high-quality superthin (5–50 nm) dielectric that
cannot be formed using a standard technology due to high formation temperatures
(about 1400 K). A possibility of formation of high-quality superthin oxide
films on Si (SiÎ2, TiO2, Ta2O3,
and Al2O3) is studied using newly improved original
method of catalytic plasma anodization (CPA), which is a relatively
low-temperature (<600K) technique. A thin layer of a rare-earth element
(REE) is evaporated onto the surface. During the CPA process, thin layers REE
and underlying material are rapidly oxidized. Oxidation rate increases by an
order of magnitude, process efficiency – nearly by two orders, and
electrophysical properties of the structure are improved. Then, REE oxide layer
is removed chemically and oxide surface becomes almost pure, since REE protects
material against ion bombardment. To improve further the structure of the
obtained oxides, the samples were annealed in nitrogen atmosphere at 773K or by
1–3 pulses from incandescent lamp with durations of 1s. Thickness, growth rate,
inner charge, boundary states density, breakdown field, dielectric constant,
roughness, etc. of the obtained oxide films have been determined. The X-ray
analysis showed that all of them had an amorphous structure. These results
confirm the efficiency of the method for formation of high-quality super-thin
oxides. Mechanism of the CPA based on free pulling of oxygen ions from plasma
through a catalyst into the anodized material due to the difference of
electronegativities of REE and oxidant material is proposed. Fig.
9,
Tab.
1,
Ref.
9.
Auth.
13.B2.44. New
rotation-corrosion dispergation method for obtaining of iron–oxygen
nanoparticles. /O. Lavrynenko, V.
Kovalchuk, S.
Netreba, Z. Ulberg/.
Nano Studies. – 2013. – # 7. – pp. 295-22. – eng.
In the article we propose a new
rotation-corrosion dispersing (RCD) method for obtaining of iron–oxygen nanoparticles. The
process of the primary crystals formation applying the RCD method that based on
the iron (steel) contacting with water dispersion medium and air oxygen is
determined by simple electrochemical reactions on the metal surface. As a seed
structure we found the following species: Fe(II)–Fe(III) layered double
hydroxides (LDH) and
ferrihydrite. While the LDH particles are present in the reaction area and on
the steel surface, ferrihydrite is located in the near surface layer. Another
product of the phase formation under such condition is weak concentrated sols.
The optimum physicochemical condition for the formation of different iron–oxygen nanosized minerals was
fixed in the present work. Fig. 26, Ref. 60.
Auth.
13.B2.45.
Studies on thermal properties of silicone–acrylic nanopowders and of organic
polymer coatings modified with such nanopowders. /J. Trzaskowska, J. Kozakiewicz/. Nano
Studies. – 2013. – # 8. – pp. 7-16. – eng.
Thermal properties of nanopowders containing silicone–acrylic core–shell nanoparticles (size ca.
100nm) and of epoxy–polyester
and polyester powder coatings, both unmodified and modified with 3% of such
nanopowders added as impact modifiers, were investigated using differential
scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The
nanopowders showed two glass transition temperatures (Tg) when
examined by DSC:
one below –100oC
corresponding to relaxation of polysiloxane chains and another over +100oC
corresponding to relaxation of poly (methyl methacrylate) chains. Tg
of the core of core-shell nanoparticles contained in nanopowders depended on the
chemical structure of silicone resin which constituted the core. It was also
found that the coatings modified with nanopowders showed lower Tg
than the unmodified coatings. TGA studies confirmed that the chemical structure
of silicone resin affected thermal decomposition of nanopowders. TGA
investigations of unmodified coatings and coatings modified with nanopowders
revealed that thermal decomposition proceeded differently in both cases. Fig.
7, Tab.
5, Ref.
12.
Auth.
13.B2.46. Heterogeneous nano cerium chromate as a new and selective
oxidant for selective conversion of alcohols to corresponding carbonyl
compounds. /S. Oftadehgan, N. Goudarzian/. Nano
Studies. – 2013. – # 8. – pp. 35-44. – eng.
The efficiency of highly branched
polyethylenimine (PEI) as a support for nano cerium chromate and subsequence
use as a heterogeneous oxidant for selective oxidation of alcohols has been
investigated. These were synthesized using PEI to produce a polymer coordinated
nano cerium, a new and straight forward method for screening high
catalytically active nanoparticle polymer composites. The one-step systematic
derivatization of the PEI scaffold led structural correlated to the
stabilization of cerium nanoparticles and catalysis. Analysis of this
polymeric reagent identified a cerium chromate nanoparticle-composite that was
able to efficiently oxidize several alcohols in dioxane under mild conditions
due to the surface area of the nano cerium chromate per unit volume. The
capacity of the reagent and fixation of nano cerium chromate confirmed by ICP
and atomic absorption technique and morphology of this nano composite investigated
by SEM and TEM. The reagent was found to be efficient and selective in the
oxidation of benzylic and allilyc alcohols to the corresponding carbonyl
compounds in high yield. The reagent exhibit good chemo selectivity in
oxidation reactions. Fig. 3, Tab. 1, Ref. 27.
Auth.
13.B2.47. Porous
Si substrate: A high-quality
and cheap substrate for advanced RF applications. /Y.
Belaroussi, M. Belaroussi, G. Scheen, K. Ben Ali, J. Raskin/.
Nano Studies. – 2013. – # 8. – pp. 45-52. – eng.
Nanostructured porous silicon is very promising for RF applications by overcoming the high-frequency losses originating from
the bulk silicon substrate. A micro-porous silicon layer is formed by
electrochemical anodization of Si at constant current density. The target thickness is 50µm
with an average pore diameter of 5nm in order to reach an effective resistivity
larger than 10kW∙cm and an effective relative permittivity as low
as 2.5. Porous Si layer before and after oxidation is characterized by XRD,
SEM/EDS and FTIR. The results show a very good oxidation which is highlighted
by vibrational modes. Moreover, SEM images of the porous silicon surface morphology
indicate that micro-pores are obtained with size and density that depend on the
current density, the anodization time and the resistivity of the starting
silicon substrate. RF measurements of transmission lines demonstrate the successful
reduction of the permittivity and conductivity of the Si substrate. Fig.
9, Ref.
16.
Auth.
13.B2.48. Nanocrystalline
nickel cobalt ferrite (Ni(1/2)Co(1/2) Fe2O4)
for electromagnetic interference (EMI) shielding applications. /D. Tiwari, A.
Thakur, S. Borjas-Garcia, L. Villasenor Cendejas, N. Dasgupta-Schubert/. Nano
Studies. – 2013. – # 8. – pp. 53-62. – eng.
The interest of EMI shielding is due
to serious electromagnetic interferences caused by electronic products and
devices. EMI shielding makes plastic enclosures able to protect equipment with
EMI and safe transmission of data. Looking the design versatility,
environmental reliability and good signal/noise ratio, we worked with nickel–cobalt ferrite (Ni(1/2)Co(1/2)Fe2O4) materials, which is easy to design
with good signal/noise ratio. Nickel–cobalt
ferrite powders have been studied in MHz frequency ranges and results are presented
in this paper. We synthesized the
nickel-cobalt ferrite via citrate route method at room temperature. The crystal
structure was verified by the X-ray diffraction (XRD)
pattern and dielectric behavior analyzed
by using impedance analyzer with varying temperature up to 200^oC. Transmission
electron microscope (TEM) analysis showing the prepared powder is nanocrystalline is also confirmed by the particle
size obtained from the Scherer’s formula: 27.7nm. The results show that the prepared material has good proximity of dielectric
constant and the calculated activation energy is 0.140 eV. Because of the conductivity
and permeability of the prepared material at MHz frequency it is useful to EMI
shielding application, which is about 20 to –15 dB at 100kHz to 100 MHz frequency ranges. Fig.
8, Tab.
2, Ref.
9.
Auth.
13.B2.49.
Phase transition of nanoparticles of organic pigments.
/M. Kakuichi, K. Kasatani, Y. Morita/.
Nano Studies. – 2013. – # 8. – pp. 95-102. – eng.
Phase transition
of nanoparticles of organic pigments was studied. Conditions under which
phase transition of nanoparticles occurs were optimized. N-methylpyrrolidone
solution of 3,6-diphenyl-2,5-dihydropyrrolo [3,4-c] pyrrole-1,4-dione (DPP), a
derivative of diketopyrrolopyrrole, was diluted in vigorously stirred aqueous
ethanol solution. Colloidal solution was then obtained. This solution was annealed
at 60oC. UV/visible
absorption spectra
of DPP nanoparticles show that the wavelength of main absorption band shifted
from 530 to 545nm
after annealing, the absorbance of the band increased, and sharpening of the main
band was also observed. From
these results, it was suggested that the phase transition to J-like
aggregates occurred by annealing. Phase transition of nanoparticles of violanthrone 79 was also observed. Fig. 9, Ref. 20.
Auth.
13.B2.50. Structural
and dielectric studies of Cr(3+) doped ZnFe2O4
nanoparticles. /R. Sebastian, K. Maniammal,
Sh. Xavier,
E. Mohammed/. Nano
Studies. – 2013. – # 8. – pp. 121-130. – eng.
A series of chromium doped zinc
ferrite nanoparticles, ZnCrxFe(2–x)O4 (x =
0.0, 0.2, 0.4, 0.8) were prepared by using sol–gel technique. The formation of
single phase FCC spinel structure was identified in all the compositions using
XRD and FTIR. Rietveld refinement analysis has been used to analysis the XRD
patterns. The lattice constant calculated from Rietveld refinement analysis was
found to decrease with chromium ion concentration. The crystallite size of the
sample was found to decrease with increase in chromium concentration. The
TEM image reveals spherical morphology of the particles. Hall–Williamson
analysis is used to evaluate the lattice stain induced in the samples. Detailed
investigation of permittivity, dielectric loss, and AC conductivity was carried
out in the frequency range 20Hz to 5MHz for all the doping concentrations.
Frequency dependence of permittivity shows normal behavior and agrees with
Koop’s phenomenological theory of dielectric dispersion. AC conductivity is
found to increase with frequency. The low value of dielectric loss makes them
suitable for high frequency applications. Fig. 9, Tab. 2, Ref. 23.
Auth.
13.B2.51. Formatıon
and evolutıon of nıckel sılıcıdes ın
sılıcon nanowıres. /A. Katsman, M. Beregovsky,
Y. Yaish/. Nano Studies. – 2013.
– # 8. – pp.
139-152.
–
eng.
Thermally activated axial intrusion of
nickel silicides in silicon nanowires (NWs) is utilized to form nickel silicide
/ silicon contacts in silicon NW (SiNW) field effect transistors. The growth of
different nickel silicides is often accompanied by local thickening and
tapering of the NW, up to its full disintegration. In the present work this
process was investigated in SiNWs of 30–60 nm in diameters with pre-patterned
Ni electrodes after annealing at different temperatures of 300–440oC
and times up to 120s. From the temperature dependence of the intrusion lengths
activation energy of 1.45 eV for the surface diffusion of nickel was extracted.
In several cases, periodic thickening of nickel-rich part is accompanied by
tapering of monosilicide part up to its full dissolution. The kinetics of the
nickel silicides growth was described by theoretical model. For a certain set
of parameters tapering and dissolution of the monosilicide part of the
intrusion were obtained. Fig. 9, Tab. 1, Ref. 26.
Auth.
13.B2.52. Separatıon
of nanopartıcles from nanopartıcle enhanced phase change
materıal. /M. Sheikh, M. Sharif, P. Rupar/. Nano
Studies. – 2013. – # 8. – pp. 153-164. – eng.
Nanoparticle enhanced phase change
material (NEPCM) is a colloidal solution of base fluid (alkane) and
nanoparticles which have been developed to store thermal energy in the form of
latent heat through phase change mechanism, i.e., melting and solidifying. Nanoparticles are primarily
used to enhance thermal conductivity of the base fluid. After repeated phase
change cycles, NEPCM should be replenished due to loss of efficiency. Since the
disposal of the used NEPCM into the environment without any treatment, possess
environmental and health hazards, it is necessary to develop technologies to
separate the nanoparticles from the NEPCM before disposal. In this paper,
several separation methods, such as: distillation, chemical destabilization,
and centrifugation, yielding complete or partial separation, are evaluated and
presented. The effectiveness of the separation methods have been analyzed
using scanning electron microscopy (SEM) and UV–Vis spectrometry. Fig.
14, Tab.
4, Ref.
25.
Auth.
13.B2.53. Comparatıve
studıes of TiO2 nanomaterıal wıth ıts
photo-catalytıc applıcatıons. /Y. Ng, Y. Leung, M. Wong, A. Djurisic, F. Leung, W. Chan/. Nano
Studies. – 2013. – # 8. – pp. 165-170. – eng.
Metal oxides are important materials that are being
developed for use in research and health-related applications. In particular,
TiO2 nanomaterial for application in antibacterial coatings,
pollutant purification, and photovoltaic devices has been extensively studied.
However, there are few studies are comparing pollutant purification and
antibacterial behavior among different TiO2 nanostructures. In
addition, the photocatalytic performances are highly dependent on morphology
and crystal structure. In this study, different nanostructures of TiO2
with different morphology (nanoparticles and nanotubes) have been successfully
synthesized by simple methods (anodization and solution method). SEM and TEM
images have confirmed the morphology. The test of antibacterial activities
under UV and ambient illumination has been demonstrated. Furthermore, the
dye degradation test under UV illumination is also performed and obtained
results dependence on the morphology and crystal structure is discussed. Fig.
4, Tab.
1, Ref.
6.
Auth.
13.B2.54. Nano-sphere of metal carbonates: Synthesis and characterization as energy storage
materials. /Y.
Sharma, A. Kumar, P. Chaturvedi/. Nano Studies. – 2013. – # 8. – pp. 171-182. – eng.
Lithium ion batteries (LIBs) are being
developed to improve the energy / power density, longevity and safety to find
their usage in high end applications. These features of LIBs extensively
depend upon the Li-kinetics of electrode materials. Despite of invention of
various materials in different shape and sizes, a suitable material is yet to
be found which could fulfill all above requirements. In order to find suitable
anode material, in the present work, nano-spheres of metal carbonates Cd(1–x)CoxCO3
(x=0, 0.25, 0.50) are synthesized employing easy and cost effective
co-precipitation method at ambient conditions. XRD patterns exhibit
rhombohedral–hexagonal
crystal structure with lattice parameters a=4.92(±0.01)Ao and c=16.28(±0.01)Ao. The Li-storage properties are examined
by galvanostatic cycling and cyclic voltammetry. Based on the observed capacity
values, CV results, ex-situ XRD and ex-situ TEM of charged electrode to 3V, the
reaction mechanism is proposed and results are discussed. Tab.
1, Ref.
17.
Auth.
13.B2.55.
Model of NMR spectroscopic analysis of
azide containing organic molecules. /T. Chachibaia/.
Nano Studies. –
2013. – # 8.
– pp. 191‑200.
– eng.
Click chemistry provides powerful tool
for modular synthesis strategies of polymers. Concept was introduced by Barry
Sharpless and co-workers in 2001 and since then is widely used in many area
of chemical synthesis, from materials production to drug design. The main
concept is based on cycloaddition reaction between terminal azides and alkynes
with triazole ring containing molecule production. Among known alkali metal
azides is widely used sodium azide due its attractive chemical and physical
properties. A concern of preexisting azidophobia overcomes thanks to
development of methods for safe and secure use of azides in chemical reactions.
Among state-of-the-art methods is NMR spectroscopy, which is powerful tool for
analysis of chemical synthesis. Method of 1^H – NMR spectroscopy enables us
to detect organic azide molecules products of azide alkyne cycloaddition click
reaction. Fig. 3, Ref. 62.
Auth.
13.B2.56. Non-wetting
of cavity walls of zeolites by metals. /A. Kapanadze,
G. Rtveliashvili,
G. Tabatadze/.
Nano Studies. – 2013. – #
8. – pp. 201‑202.
– rus.
It is shown
existence of the gap of nearly 1.5Ao between the surface of a
zeolite and a metal non-wetting it. Accounting this gap explains why the volume
of cavities within the zeolite exceeds the volume of the metal introduced into
it. Tab. 1, Ref. 2.
Auth.
13.B2.57. Properties
of boron nitride synthesized under the effect of concentrated light radiation. /L. Sartinska, Å. Voynich, À. Àndreeva, À. Kasumov, I. Timofeeva, À.
Yu. Êîval, G. Frolov, Ò. Eren, E. Àltay/.
Nano Studies. – 2013. – #
8. – pp. 217‑222.
– rus.
Direct synthesis of boron nitride was
carried out under the effect of concentrated light radiation with and without
catalyst. In the presence of the catalyst it was obtained powders of
nanodispersed and fibrous structure. It was shown that the increase in the
distance from the reaction zone results in an increase in the width of the band
gap of BN structures from 3.6 to 5.1eV (at the maximum distance). The presence
of oxides in powders near the reaction zone, identified by X-ray diffraction
study, can explain the low value of the width of the band gap. Fig.
5, Ref.
12.
Auth.
13.B2.58. Investigation
the influence of absorption of mercury on the structure and morphology of the
gold thin films.
/N. Khachidze, T. Khachidze/. Nano Studies. – 2013. – # 8. – pp. 223‑226.
– eng.
With the aim of optimization of the
parameters, the mercury vapor sensor has been developed. The investigation of
the mechanism of interaction of mercury with the control element (made of a
thin gold film) of
the sensor has been carried out. The results allow drawing the conclusion that
optimum measurement time of a sensor is 20–25s. It is desirable that measurements
be carried out at low temperatures (40–50oÑ). The minimal
temperature necessary for restoration of the element is 400oÑ. Fig.
5, Ref.
3.
Auth.
13.B2.59. Attenuation of
gamma-radiation concomitant
neutron-absorption in boron–tungsten composite shields.
/G. Nabakhtiani, L. Chkhartishvili, A. Gigineishvili, O. Tsagareishvili,
D. Gabunia, Z. Rostomashvili, Sh. Dekanosidze/. Nano Studies. – 2013. – # 8. – pp. 259‑266.
– eng.
Water, plastic and other materials containing hydrogen
provide protection against the relatively weak neutron radiation. But, in the
case of high-density neutron fluxes only materials containing cadmium or boron
serve as effective shields. We focused on boron-rich materials, because they
successfully combine the set of attractive physical and technical
characteristics with a very high neutron capture cross section of 10^B nucleus.
The most of 10^B–n
elementary acts are concomitant
by the emission of a high-energy g-quantum. For this reason, one
of the major problems associated with the use of boron neutron shield is that
the additional γ-radiation shielding is necessary. The preliminary
analysis has shown that, layered composites of boron with heavy metals are
promising materials for boron-containing neutron shields, which would allow the
protection from the concomitant
gamma-radiation as well. The work gives an assessment of these materials for
shielding properties. The different dimensions of the shields are also
considered. Calculations are done by using of computer code Micro Shield.
Results proved that tungsten can be used together with 10^B-monoisotopic boron
as an effective shielding for different neutron fluxes.
Fig. 5, Ref. 18.
Auth.
13.B2.60.
Composite ceramics based on boron
carbide enriched in isotope 11B
as a promising radiation resistant structural material.
/I. Bairamashvili, M. Galustashvili, J. Jobava, V. Kvatchadze, Z. Mestvirishvili/. Nano
Studies. – 2013. – #
8. – pp. 305‑319.
– rus.
Fast neutron reactors, that over more than seventy years
of operation have shown evident merits, failed to take up a worthy position in
power engineering. One of the main reasons is deficiency of necessary
materials. In
fast neutron reactors heat and radiation loads are considerably higher than
that in thermal reactors which leads to necessity to develop structural
material with higher durability both for reactor vessel and for intra-reactor
systems. In the present paper, one of the variants of such problem solution is
shown as development of a new radiation-resistant structural material based on
boron carbide enriched in stable isotope 11^B (>99.4at.%). In order to
achieve specific plasticity of the material, design of creation technique of
composite ceramics by boron matrix (11^Â4C) doping with
zirconium (Zr11^B2)
is proposed. Analysis of those few data, that were obtained for such compounds
and their comparison with results obtained for SiC already having status of the
advanced radiation-resistant composite, make it possible to assume that 11^B4Ñ – Zr11^B2 can become one
of the most asked-for radiation-resistant structural materials of the future.
Ref. 16.
Auth.
13.B2.61. Some issues of
ultradispersive a-aluminum oxide powders of low temperature
synthesis. /T. Kuchukhidze,
T. Archuadze,
V. Gabunia,
M. Kadaria,
O. Lekashvili, R. Chedia/. Nano
Studies. – 2013. – #
8. – pp. 315‑326.
– geo.
By
gradual heating of unstable intermediate phases of aluminum
hydroxides and aluminum oxides above the temperature of 1200oC thermodynamically stable α-Al2O3 is obtained,
which is widely applied in
obtaining ceramics with different functional purposes. One
of important moment is transformation at
low temperature
– preliminary inclusion of α-Al2O3-crystals
during low
temperature synthesis in
conditions of decomposition of precursors (hydrolyze), drying-heating, and
annealing for
obtaining ultra-dispersive α-Al2O3-nanopowders. Modified
polymer-precursor and self-developing reduction–oxidation reaction was used by
us for obtaining a-alumina. Aluminum nitrates, aluminum lakesides,
oxidants, and bi-functional compounds producing organic–inorganic gels (glycols,
amino-alcohol, carboxyl acids, amino-acids, biopolymers and others) were used
as initial precursors. Organic–inorganic gels were obtained by homogenization
of aluminum and organic compounds at 80–200oC and by carbonization
of the obtained mass at 300–800oC.
By adding a-modification aluminum oxide in initial reactive mixture
3–5%,
g®a phase transformation
temperature (1200oC) decreases to the value of 1020–1080oC. It is established, that
during interaction between aluminum nitrates and urea, adding of aluminum
causes obtaining of amorphous aluminum oxide. By its annealing on the air at
800oC (2h) Al2O3 is obtained. Possibilities of
obtaining nano-phase powders from aluminum at low temperatures (20–90oC) by subsequent annealing of
obtained Al2O3 H2O amorphous powder (1000–1100oC) the α-
Al2O3 fibbers
are obtained. It is established, from the X-ray
diffraction method, that
Al2O3 fibers contain particles with sizes of 10–30 nm. Microstructure
of the powders and corundum
products, obtained from them was studied by optical and electronic scanning
microscopes (Nikon ECLIPSE LV 150,
NMM–800TRF, Nanolab–7).
Microhardness was
determined on the device DUH–211S. Grain size of synthesized
powder was established by Analysette 12 Dyna Sizer. Phase analysis of the
specimens was conducted on the X-ray diffractometer DRON–3M. Thermal analysis (TG–DTG–DSC) was carried out on the device
Setaram Tag. Fig. 6, Ref. 31.
Auth.
13.B3.1. Duration of Cenozoic orogenies (by the example of
On the basis of a
litho-facial analysis of Cenozoic deposits that accumulated during the
manifestation of orogenies (phases of folding), the processes of sedimentation
accompanying these phases, as well as some paleogeographic and structural
changes have been considered. Each orogenic phase was accompanied by
accumulation of synorogenic regressive formations. They were a direct
consequence and criterion of intensification of the tectonic movements. It
turned out that in some cases there is no temporal coincidence between orogenic
phase and regression, and the manifestation of the same orogenic phase in
different tectonic zones is not strictly synchronous. During the Cenozoic time,
the most important were the Pyrenean and Styrian orogenies, which, along with
the Chegem orogeny, created the principal morphostructural units and mostly
predetermined, in general, the character and appearance of presentday
geological structure of the region. Taking into account the age of regressive
deposits and geochronological data, for the first time the duration of each
orogeny was determined for the
Auth.
13.B3.2. Stratigraphic spreading of Mytiloceramus fauna in Lower and Middle Jurassic deposits of
Georgia. /M.
Topchishvili/. Bulletin of the
Mytiloceramus fauna relicts
gathered from Lower and Middle Jurassic sediments of different regions of
Auth.
13.B3.3. Stratigraphical correlation of the Barremian-Aptian sedimentary
sequences of the Okriba-Khreiti, Dzirula tectonic subzones (
The
question of correlation of the Barremian-Aptian (Lower Cretaceous) sedimentary
sequences, represented in the Okriba-Khreiti and its adjacent Dzirula tectonic
subzones (
Auth.
13.B3.4. Shales of
Far-reaching changes in global energy market,
triggered by the so-called “shale revolution” and related worldwide activities
push into the forefront the problem of investigation of shale resources of
Auth.
13.B3.5. Garnets from the
Dzama ore-bearing valley. /N. Poporadze, O. Seskuria/. Mining
Jornal. – 2013. – # 2(31). – pp. 4-6. – geo.; abs.: rus., eng.
The paper is on the
variety of garnets from the Dzama ore-bearing valley. In the ore-bearing valley
region, there are distinguished two districts of skarns: the Saterdze district
and the Garti district. The garnet group minerals have been observed in both
districts. As the researches carried out in this region show, the refractive
index of garnets developed in the Dzama ore-bearing valley correspond to those
of garnets of the ugrandite series and they are generally represented by
grossular-andradite, andradite and grossular bearing varieties. The afore
mentioned garnets are ineligible in jewelry. Fig. 2, Ref. 2.
Auth.
13.B3.6. Geological
structure of the rhyolite extrusives of Gantiadi group and prospects of their
application as raw materials for glass industry. /G. Nadareishvili, M. Tkemaladze/. Mining journal. –
2013. – # 2(31). – pp. 7-11. – geo.; abs.: rus., eng.
In the
article, ther questions of a geological structure, mineralogical-petrographical
and petrochemical structure of composing rhyolite breeds of Gantiadi group of
extrusive bodies and the containing volcanic-sedimentary suites located in the
Dmanisi area (Kvemo Kartli) are considered. Besides, questions of petrochemical
features of these breeds for the purpose of detection of their suitability as
new, complex, nonconventional mineral raw materials for the glass industry are
considered also. Fig.1, Tab. 1, Ref. 6.
Auth.
13.B3.7. Iodine in underground waters of
A propagation of iodic underground waters in the
Auth.
13.B3.8. Connection of unique
Georgian wines with tectonics. /V. Nadiradze/.
Mining Journal. – 2013. – # 2(31). – pp. 40-41. – geo.; abs.: rus., eng.
The article looks at the relation between some unique
zones of Georgian viticulture and geological processes. The zones which produce
unique wines are associated with complex tectonic junctions originated from the
intersection of collapsing structures of several connections. These junctions
are often related to contrasting magmatism and intensive hydrothermal
processes, which cause strata to become rich in chemical elements. This process
affects the formation of soil and, further, nourishment of vine, which
determines unique qualities of the vine and, consequently, the wine produced
from it. Fig. 1.
Auth.
13.B3.9. On the Sazano pegmatitic field. /M. Gagnidze, A. Kvitsiani, A. Gomelauri,
O. Kavtelashvili/. Mining Journal. – 2013. – # 2(31). – pp. 42-47. – geo.;
abs.: rus., eng.
The paper discusses the structural style
of the Sazano pegmatitic field: morphology and mode of occurrence of pegmatites,
their mineral composition, the problems of genesis and qualitaty
characteristics. The research results allow classifying the object as
pegmatites of non-differentiated, quartz-feldspar type, which are suitable for
production of high potash spars. Fig. 9, Tab. 2, Ref. 5.
Auth.
B4. Geography.
Cartography. Astronomy
13.B4.1. Results of surface-wave tomography
of Earth’s crust
for Lesser
Caucasus
according to
data of Rayleigh
waves. /T.
Gegechkori, N. Zhukova, E. Meparidze, A. Gventsadze,
A. Sborshchikovi/.
Nano Studies. – 2013. – # 7. – pp.
213-220. – rus.
There are
presented the results of
surface-wave
tomography of Earth’s crust
for Lesser
Caucasus according
to data
of Rayleigh waves. Fig. 9, Ref. 7.
Auth.
13.B4.2. Tomographical model of inhomogeneous structure of Earth crust for Georgia
and nearest territories developed by data of surface seismic Rayleigh waves. /T.
Gegechkori, V. Gotsiridze, N. Zhukova, A. Sborshchikovi, I. Shengelia/. Nano Studies.
– 2013. – # 8.
– pp. 227‑230.
– eng.
For the first time, Georgia and
nearest territories has been studied tomographically using surface seismic
Rayleigh waves method. There are utilized the 1960–1985 records of surface
waves from seismic stations of Transcaucasia (21 stations). The tomographical
models of the Earth crust’s inhomogeneous structure have been analyzed for
depth up to 40km and surface waves with periods from 10 up to 22s. Obtained
results are interpreted from the geological point of view. Fig.
7, Ref.
4.
Auth.
B5. Other Natural and Exact Sciences
13.B5.1. Giant ostrich in
Dmanisi fauna.
/A.Vekua/. Bulletin of the
Georgian National Academy of Science. – 2013. – Vol. 7. – # 2. – pp. 143-148. –
eng.; abs: eng., geo.
Dmanisi site and fauna of Upper Pliocene
vertebrates is the widely known standard of late Neogene of the Caucasus.
Materials on the rarest finds of sculls and mandibulae of the oldest (1,85 m)
hominids in Eurasia in Dmanisi, as well of remains of multiform fauna of
vertebrates have been repeatedly published in various scientific editions.
Excavations of fauna of Upper Pliocene vertebrates of widely known Dmanisi site
has been continued successfully. The list of fauna is enlarged with new
elements yearly. Dmanisi faunistic complex contains representatives of about
40 species of six orders Mammalia: Lagomorpha, Rodentia, Carnivora,
Proboscidea, Perissodactyla, rtiodactyla. There are also single finds of
remains of Reptilia and Aves. The birds are most poorly presented in diverse
fauna of Dmanisi. We have found only three bones of birds until recently. At
the beginning of excavations of the site in 1983, a large femur of ostrich was
discovered, then, in 2001 and 2006, the head of arm of Gallus and shin of Strix
were found. And finally, in 2012, we succeeded in fnding one more femur of
ostrich, the description of which this article is dedicated to. Presence of
remains of ostrich in old deposits unmistakably points to the predominance in
the region of favorable conditions of climate. It is known that ostriches
inhabit in open, snowless regions, preferring deserted, semi-deserted and
steppe landscapes. Presence of remains of huge ostriches in the second half of
the Pliocene on the territory of the South Caucasus is vivid evidence of the
prevalence of continental arid stations in this region. Fig. 3, Tab. 1, Ref.
13.
Auth.
13.B5.2.
Scaling features of ambient noise at
different levels of local seismic activity. /T.
Chelidze, T. Matcharashvili,
N. Zhukova, A. Sborshchikovi/.
Nano Studies. – 2013. – # 7. – pp.
201-206. – eng.
Investigation of dynamical features of ambient seismic
noise is one of the important research challenges from the viewpoint of
scientific and social interests. In this research, scaling features of the
ambient seismic noise data recorded at Oni seismic station, Georgia, were
investigated using detrended fluctuation analysis and multifractal detrended
fluctuation analysis methods. Data sets were selected to include time periods
with different level of local seismic activity. Scaling features of seismic
noise datasets are noticeably different for seismically active and relatively
quiet time periods. According to integral fluctuation features, at increased
seismic activity Earth surface vibration is closer to persistent long range
correlations, while at quiet periods we observe multitude of stochastic
behaviors. Fig. 2,
Ref.
15.
Auth.
C. TECHNICAL AND APPLIED SCIENCES. SECTORS OF ECONOMY
13.C1.1. Modern trends of power engineering development and the problems of
optimal usage of Georgian energy resources. /T. Magrakvelidze, V. Chichinadze, Kh.
Lomidze, N. Bantsadze, A. Mikashavidze, M. Janikashvili, I. Archuadze/. Proceedings of the A. Eliashvili Institute of Control Systems. – 2013. – # 17. – pp. 75-80. – geo.; abs.: geo., eng., rus.
Modern trends of
power engineering development worldwide are reviewed in the paper. The
appropriate data is presented and analyzed. It is shown that power generation
in Georgia should reach 40-50 billion kw. h within nearest decades for
sustainable development of the economics. Taking into account resources of
Georgia, the main priority should be done to the hydro power generation, both
with or without reservoir power plants. It is obvious that so called
alternative power resources should be developed as much as possible. However,
these resources are not too much to be the base of power engineering
development in Georgia. Fig. 1, Tab. 1, Ref. 6.
Auth.
13.C1.2. Prospects of using unconventional renewable energy resources of Georgia.
/N. Mirianashvili, N. Gdzelishvili,
V. Khatashvili/. Proceedings of the A. Eliashvili Institute of Control
Systems. – 2013. – # 17. – pp. 89-93. – geo.; abs.: geo., eng., rus.
The current state and
prospects of sustainable and integrated use of nonconventional renewable energy
resources of Georgia are analyzed in the paper. Tab. 2, Ref. 7.
Auth.
13.C1.3. The
effectiveness of heat transfer devices with elastic walls. /M. Jikhvadze, E. Pantskhava/. Building. – 2013. – # 2(29). – pp. 117-120. – geo.; abs.: geo., eng.
The main objective of
the work is to study specificities of movement of liquid in a nonstationary
flexible channel with regard to use these specificities in technical devices. A
specific study has been made in nonstationary flexible heat-exchange facilities
and in the devices necessary for thermal treatment of flexible, plastic and
elastic thin roll materials in order to substantiate the possible effective use
of aerodynamic bearings. The aim of the work was also treatment of experimental
stands used in researching process with regard to use them in heat-power
training laboratories of the Higher Technical Institutes. Fig. 2, Ref. 3.
Auth.
13.C1.4. Export potential of the electrical energy generated in Georgia. /G. Gaganidze/. Caucasus University Collection of Scientific Works. – 2013. – pp. 46-51.
– geo.; abs.: geo., eng.
This study aims to evaluate the export potential of
the electrical energy produced in Georgia. The export potential of Georgia
needs a dramatic growth, thus any new opportunity should be utilized in the
best way. This study used a comparative analysis for identification of the
possible markets for the new product. Electrical energy, as a specific product,
could be supplied to the near neighbours. It was found that the potential of
the electrical energy produced in Georgia should be considered in two main
directions: first, the electrical energy as the product itself, and second, as
the high consumed material to produce other high export potential products.
Following the analysis the problems which should be considered as the major
obstacles on the way of the development of the hydro power stations in Georgia
were revealed. The major weakness of the research is the fact that under the
electro energy development was considered only the hydro power development. Due
to the fact that Georgia is rich in hydro energy such limitation seems logical,
but for the sake of clarity should be mentioned that other energy sources also
have potential to produce electro energy. The paper is trying to evaluate the
export potential not only as the potential for the nearest land neighbours,
but also to analyse the export potential for far away states. Also, export
potential of the electro energy is considered in the broader way, such as the
potential to produce other products which are high energy consuming by nature. Tab. 2, Ref. 2.
Auth.
13.C1.5. Emission
materials for solar-to-electric energy converters.
/M. Nishchenko, M. Shevchenko, E. Tsapko, G. Frolov,
L. Sartinska. Nano Studies. – 2013. – #7. – pp. 249-254. – rus.
Nanostructure
emission materials for electrodes for solar-to-electric energy converters were
developed and investigated. It was ascertained the relationships, mechanisms of
electronic emission of nanostructure electrodes and process of gas ionization
under the effect of solar radiation at the different intensities, temperatures
and vacuum conditions. The
thermoemission conversion of thermal energy into electric under the heating of
cathodes by the solar radiation and optimum conditions of their using in the
converter of energy and parameters of the last were investigated. It was
developed the thermoemission nanostructured electrode materials. Fig. 4, Ref. 7.
Auth.
C2. Electrical Engineering.
Electronics. Radio Engineering. Communications
13.C2.1.
An investigation of electromagnetic
shielding and mechanical properties of conductive fiber reinforced composites.
/E. Sancak,
Z. Yıldız,
M. Yuksek, N. Demirel,
E. Kocak/.
Nano Studies. – 2013. – #
7. – pp.
63-70.
– eng.
In recent years, the use of electrical and electronic
devices has grown rapidly. These devices cause electromagnetic interferences,
which could threaten human life. In order to solve this problem, intensive
research to develop textile surfaces having electromagnetic shielding
properties continues. The main objectives of this research work are to develop
conductive fiber composite materials and to determine their electromagnetic
shielding effectiveness. Thermoset polyester is the matrix phase and glass,
stainless steel and carbon fibers are the reinforcement phase of the composite
material. Carbon and stainless steel are incorporated as conductive fillers to
provide the electromagnetic shielding properties of the composite material.
Composites were investigated in terms of mechanical properties. Using a coaxial
transmission line holder set-up, the electromagnetic shielding effectiveness of
staple fiber reinforced composite structures was carried out in the frequency
range from 15 to 3000MHz. Fig. 6, Tab. 3, Ref. 14.
Auth.
13.C2.2.
Temperature dependence of the
electrical transport properties of multiplayer graphene.
/E. Sadki,
H. Okazaki, T. Watanabe, T.
Yamaguchi, Y. Takano/. Nano
Studies. – 2013. – #
7. – pp.
71-76.
– eng.
Multilayer graphene thin films are deposited on silicon
oxide substrates by mechanical exfoliation (or “scotch-tape method”) from Kish
graphite. The thickness and number of layers are determined from both atomic
force microscopy and Raman Spectroscopy. Electrical terminals are deposited on
multilayer graphenes in a four-probe configuration by electron-beam
lithography, gold/titanium thermal evaporation, and lift-off. The electrical
resistance is measured from room temperature down to 2K. The electrical
resistance of the multilayer graphenes shows an increase with decreasing
temperature, and then decreases after reaching a maximum value. These results
are compared with recent experimental and theoretical data from the literature.
Fig. 3, Tab. 1, Ref.
17.
Auth.
13.C2.3.
Conductive polymer/C-60 composite film. /M. Onoda/. Nano Studies. – 2013. – # 7. – pp. 123-130. – eng.
Nanostructured films of various conductive polymers can
be obtained through electrophoretic deposition process. Unlike the conventional
deposition techniques based on the solutions of conductive polymer, the
methods employing colloidal suspensions like one proposed here make it to
possible to separate the solidification of material from the film formation and
drying steps. This unique feature provides nanostructure in the film deposited.
A simple method, pouring a dilute solution of target material into an excess of
non-solvent liquid, was used to obtain suspensions of conductive polymers.
Since this method is similar to a step of purification of the polymers after
polymerization and does not use any additives such as surfactant, the polymers
in the suspension and therefore the films obtained through the electrophoretic
deposition may keep at least the purity of the original material. The unique
morphology found in the electrophoretically deposited films opens up the new
application of polymer light-emitting devices other than displays, the
artificial finger print devices for anti-forging technology applicable to smartcards.
Additionally, a unique process to obtain polymer–fullerene nanocomposite for
photovoltaic application through the electrophoretic deposition is also
proposed. Fig. 10, Ref. 11.
Auth.
13.C2.4.
For theory of phase transformations in PrAlO3Z.
/B. Chachkhiani, L. Darchiashvili, E. Zeragia/. Nano Studies. – 2013. – #
7. – pp.
241-248. –
rus.
An accurately solved model with
thermodynamic potential of the eighth order on displacements of oxygen
octahedron fully describing the character of change of all phases in PrAlO3,
as well as anomalies of measurable characteristics in case of the series of
successive transitions is proposed. A complete model describing the effect of
displacement of oxygen octahedron on splitting of basic (Eg) and
excited (T(2g)) terms of Pr3+ ion is proposed.
Analytical expressions for splitting of T(2g) term in orthorhombic
and monoclinic phases are obtained through the values of parameter component.
It is proved that electronic subsystem in PrAlO3 cannot stabilize
the phases of new symmetry as was assumed earlier. The structure of
low-symmetry phases is discussed. Ref. 11.
Auth.
13.C2.5.
Creation, research and subsequent usage of nanoparticles fluids for electronic
components cooling. /J.
Avaliani, I. Avaliani, T. Khachidze, S. Dolidze/. Nano Studies. – 2013.
– # 7. – pp. 267-270.
– eng.
The paper deals with the
investigation of two-component liquids containing nanoparticles (nanoliquids)
for their application to electronic element cooling. Based on the obtained
results it is inferred that by mixing cooling agents with surface-active
substances, it is possible to produce new cooling nanoliquids, which would be
suitable for efficient cooling of electronic elements. Fig. 4, Ref. 5.
Auth.
13.C2.6.
Electromagnetic shielding and mechanical properties of knitted fabric
reinforced composites. /E. Sancak,
M. Akalın, M. Yuksek, N.
Demirel, I. Usta, E. Isgoren/. Nano
Studies. – 2013. – # 8. – pp. 17-28. – eng.
Electrical and electronic devices, which intentionally or
unintentionally radiate electromagnetic waves, are being used more as a
necessity of modern life. As a result of the increase in the usage of
electrical and electronic devices, we are being exposed to more electromagnetic
environmental pollution with each passing day. One of the main methods used
in protection from electromagnetic radiation is “shielding”. Shielding can be
described as isolation to keep the electromagnetic radiation from external
sources outside or to prevent unwanted emission of electromagnetic energy
radiated by internal sources. In this study, yarns that are made of finest
metal wires and cotton fibers were fabricated by using the ring spinning
methods. Their knitted fabrics made from 7G flat knitting machine were
developed successfully. Polyester composites containing made conducting
knitted fabric with metal wire as electrical shielding materials were
fabricated. Composites were investigated in terms of tensile strength, strain,
elasticity modulus, flexural strength and impact strength properties. Using a
coaxial transmission line holder set-up, the electromagnetic shielding effectiveness
(EMSE) of various knitted fabric reinforced composite structures was carried
out in the frequency range from 15 to 3000MHz. Fig. 8, Tab. 5, Ref. 14.
Auth.
13.C2.7.
Characterization of AlN thin films annealed by CO2 laser. /J.-Sh. Chen, J.-Y. Wang, Y.-J. Yao,
Ch.-T. Chiang/. Nano
Studies. – 2013. – # 8. – pp. 63-68.
– eng.
Aluminum nitride (AlN) thin film is deposited by direct-current reactive
sputtering system on sapphire (Al2O3)
and Si(111) substrates. We anneal AlN thin film by CO2 laser scanning
its surface. The scan rates are 2.5 and 3mm/s with different laser power for different substrate samples. The
key parameter is the different laser energy absorbed by substrates and thin
films, and then the films will undergo different temperature and be annealed
effectively. Comparing with tube
annealing furnace, the CO2
laser annealing method can improve the issue
of different thermal
expansion coefficients and
lattice mismatch between film and substrate. The crystallinity and surface roughness of AlN thin films are characterized by
X-ray diffraction and atomic force microscope. The c-axis crystallinity quality of annealed AlN thin films is better than that of
non-annealed samples. The surface roughness remains the same after laser annealing.
Therefore, the CO2 laser annealing process displays excellent effect for AlN thin films
crystallinity
and surface roughness. Fig.
11,
Ref.
11.
Auth.
13.C2.8.
Analysis of dielectric resonator antennas (DRA)
based on complex perovskite CNBTOX –
Ca(Nb_(1/2) Bi_(1/2))_xTi_(1−x)O_3. /A. Bruno
Costa, R.
Costa, F. de O. Amarante,
A. Sombra/. Nano
Studies. – 2013. – # 8. – pp. 69-76.
– eng.
This work evaluates the numeric simulation of a
probe-feed cylindrical DRA based on Ca(Nb_(1/2)Bi_(1/2))_xTi_ (1−x)O3,
for x between 0 and 1. The electroceramics were prepared by the traditional
solid state method. The dielectric permittivity and loss of the CNBTOX ceramics
were analyzed in the region of 2 to 4GHz. The frequency response around the
first mode (HEM11δ) was determined by the HFSS (high frequency structure
simulator) and these results were compared to the experimental setup. In this
procedure, significant parameters of the DR, such as: return loss, input
impedance, resonator bandwidth and air gap contributions were obtained during
simulation. The results show experimental and theoretical characteristics of
the resonator are in good agreement and the resonance frequencies increase with
the bismuth amount. These measurements confirm the possible use of such
material as small dielectric resonators. Fig. 4, Tab. 2, Ref. 23.
Auth.
13.C2.9.
Apparent hall mobility of charge
carriers in silicon with nano-sized “metallic” inclusions.
/L. Chkhartishvili, T.
Pagava/. Nano
Studies. – 2013. – # 8. – pp. 85-94. – eng.
There is constructed a phenomenological theory of
electron transport in a semiconductor with a nano-sized “metallic”, i.e. with
higher than matrix conductivity, inclusions which can be screened by major
carriers trapped on deep centers. In such heterogeneous samples, depending on
the degree of screening the charge carrier effective Hall mobility can be
either higher or lower than the Hall mobility in the semiconductor matrix
itself. In the temperature region of lowered values, a minimum of the effective
Hall mobility is expected. Based on the proposed theory, there are analyzed
experimental temperature-dependences (from the nitrogen boiling point up to
room temperature) of the dark- as well as photo- (under monochromatic IR
illumination) effective Hall mobilities of electrons and holes in zone-melted
n- and p-type silicon samples doped with phosphorus or boron, respectively,
irradiated at room temperature with significant doses of high-energy protons
(about 1011–1013cm(–2) and 25MeV) and/or
electrons (about 1014–1015cm(–2) and 2–8MeV).
One comes to the conclusion that the screening of the irradiation-induced
“metallic” inclusions in silicon should be related to vacancy complexes with
background (oxygen) impurities and dopants. In n-Si, these are V+O (A-centers):
Ec–0.17eV and V+P (E-centers): E_c–0.44eV, while in p-Si these are
V+B complexes: Ev+0.45eV. Fig. 3, Ref. 10.
Auth.
13.C2.10.
Investigation of the mechanical properties of polyamide
6/chitosan/hydroxyapatite based electrospun nanofibrous biocomposites.
/R.
Erdem, E. Sancak, S. Pazarlioglu, M.
Akalin, O. Atak/. Nano
Studies. – 2013. – # 8. – pp. 103-110. – eng.
Polyamide 6 (PA6)/chitosan
(CS) based nanofibers containing different amount of hydroxyapatite (HAp) were
electrospun successfully. Properties of the blended solutions were
investigated in terms of viscosity, conductivity and pH values. Morphological
and structural evaluations of nanofibers were conducted by SEM and EDS
analysis. The results revealed that uniform nanofibers were obtained with the
addition of a various amount of HAp. Tensile strength and elongational
characteristics of the nanofibrous biocomposites were also studied. Fig.
7, Tab.
1, Ref.
16.
Auth.
13.C2.11.
Compact low-pass
filters using complementary rose curve resonators (CRCRs). /I. Sassi, L. Talbi,
K. Hettak/. Nano Studies. – 2013. – #
8. – pp. 131-138.
– eng.
A novel low
pass filter with controllable transmission zeros frequencies and wide stop-band
bandwidth is presented. This filter is based on the use of the complementary
metamaterial unit cell. The complementary rose curve resonators (CRCRs) are
etched to the ground plane under a microstrip line. The design structure of the
filter is controlled by tuning the geometric parameters of the proposed
complementary resonators with a reduction of the circuit structure dimension.
Using these complementary rose curve resonators, the proposed circuit structure
is compact and wide stop-band tolerating the control of transmission zeros. Fig. 11, Ref. 10.
Auth.
13.C2.12.
Modeling of the quasi-dielectric state in PbSnTe and PbSnSe nanolayers with
high concentration of nonstoichiometric defects. /A.
Pashaev, O. Davarashvili, M. Enukashvili, Z. Akhvlediani, L. Bychkova,
V. Zlomanov/. Nano Studies. – 2013. – # 8. – pp.
253‑258.
– eng.
It is shown
that under the conditions of mismatch between the layers of IV–VI semiconductors and the
substrate when the conditions corresponding to effective “negative” pressure
are realized, the forbidden gap width increases, and the stabilized Fermi level
associated with the impurity shifts into the depth of the forbidden gap. An
algorithm for computation of the energetic location of the impurity level in
the strained semiconductor was developed. In this case, the concentration of
current carriers decreases significantly as compared to that in the unstrained
semiconductor. Fig. 1, Tab. 1, Ref. 9.
Auth.
C3. Automation & Telemetry.
Computer Engineering
13.C3.1. Receptions of indemnification of parasitic
making signals at construction interinductive of primary converters of type -
3D. /O. Labadze, M.
Tsertsvadze, T. Labadze, P. Mandzhavidze/. Proceedings of the A.
Eliashvili Institute of Control Systems. – 2013. – # 17. – pp. 55-57. – rus.; abs.: geo., eng., rus.
The paper presents
the basic receptions of indemnification of parasitic signals influencing a
target signal interinductive primary converters realization of which increases
accuracy and reduces a transformation error. Ref. 5.
Auth.
13.C3.2. Principles of construction of inter-inductive primary converters. /O. Labadze/. Proceedings of the A. Eliashvili Institute of Control Systems. – 2013. – # 17. – pp. 58-62. – eng.; abs.: geo., eng., rus.
The paper is
dedicated to the methods of construction and applications high-precision
inter-inductive primary converters intended as for control of mechanical
parameters, and their using at creation system managements. Fig. 4. Ref. 10.
Auth.
13.C3.3. Principles of contactless
definition of spatial coordinates of each joint and gripping devices of the
single-row multiarticulate industrial manipulator. /O. Labadze/. Proceedings
of the A. Eliashvili Institute of Control Systems. – 2013. – # 17. – pp. 63-65. – geo.; abs.: geo., eng., rus.
Principles of
contactless definition of spatial coordinates of each joint and gripping
devices of the single-row multiarticulate industrial manipulator are shown in
the paper. In places joints it is applied three coordinate without the
inertialinter in the primary converter of type 3D which provides reliability
and accuracy of definition of co-ordinates of each joint and gripping devices. Fig. 2, Ref. 2.
Auth.
13.C3.4.
Features of the construction of contactless three-position dynamic object. /O. Labadze/. Proceedings of the A.
Eliashvili Institute of Control Systems. – 2013. – # 17. – pp. 66-70. – geo.; abs.: geo., eng., rus.
Ways of realization
of control of contactless three position dynamic indicator based on the spent
researches of various symmetric forms of magnets are considered in the paper.
The originality of the found and installed features will provide not only the
reliable operation of the control system, but it will also preserve the
specific information of magnet system after removing the control pulse,
reducing the consumption of energy used. Fig. 3, Ref. 4.
Auth.
13.C3.5. Modeling of dynamic systems based on computers. /D. Tsintsadze/. Proceedings of the A. Eliashvili Institute of Control Systems. – 2013. – # 17. – pp. 101-104. – geo.; abs.: geo., eng., rus.
The paper represents
the issues of dynamic object simulation based on several computers and
possibility of using the software interface. Fig. 2, Ref. 3.
Auth.
13.C3.6. Mobile robot control system./D. Purtskhvanidze/. Proceedings of the A. Eliashvili Institute of Control Systems. – 2013. – # 17. – pp. 105-108. – geo.; abs.: geo., eng., rus.
The article considers
advantages of use of an electric motor in the operation of the mobile wheel
robot. The function chart of the mobile robot, the general scheme of a sensor
subsystem is developed. The issues of design for informational-measuring and
operational subsystems are discussed. Fig. 2, Ref. 2.
Auth.
C4. Mining.
Metallurgy. Chemical Industry
13.C4.1. Referring to the issue of history
of zinc in Georgia. /G. Tsirekidze, R. Chagunava/. Air Transport. – 2014. – # 1(9). – pp. 73-84.
– rus.; abs.: geo., eng., rus.
Written sources and
archeological data are considered, according to which zinc alloys have been
used even before our era (B.C.). Aristotle’s reference is given: “copper of
mossinik’s, most whitish and shiny that some kind of soil is mixed and
dissolved in it». There is an opinion that the name of brass “messing” in many
languages comes from the tribe name “mossinik” – the pioneers in obtaining this
alloy. According to Georgian writing sources, zinc alloys and metal zinc have
been already known in Georgia since the 11th-12th
centuries. It is established that King Vakhtang VI introduced the
Arabian-Persian term “tutia”, which for 3 centuries have been used as a
borrowed Georgian term to define metal zinc. Ref. 22.
Auth.
13.C4.2. On calculation of daily loads of stoping of mines of Tkibuli-Shaori coal
deposit. /N. Kukuladze, T. Pirtskhalava, M. Basiladze/. Mining
journal. – 2013. – # 1(30). – pp. 5-7. – geo.; abs.: rus., eng.
The
frequency of joint fissures of large and medium amplitude throughout the
Tkibuli-Shaori coalfield is found to
be 2.5-times less than in other fields, where mechanized complexes are widely
used. Given this circumstance, the employment of mechanized technologies in
Tkibuli-Shaori coal-fields is
justified when the coal layers are worked according to the rise, with double
faces, sloping layers with the transition to short faces in individual complex
areas. The length of double faces is obtained: on the eastern flank of the
basin - 200-250 m, the daily load - 3000-6000 tons; on the more frustrated west
wing of the trough - 100-120 m, the daily loads - 1500-3000 tons. Fig. 2, ref.
3.
Auth.
13.C4.3. On the potential
danger of sudden outburst of coal and gas at deep horizons of Tkibuli-Shaori
coal field. /I. Tsintsadze, Z. Gordeziani/. Mining
Journal. – 2013. – # 1(30). – pp. 8-14.– rus.; abs.: geo., eng.
For the
purpose of regional prognosis of sudden outbursts of the coal and gas at the
deep horizons of Tkibuli-Shaori coal field, the authors have analyzed the main
outburst indicator: the depth of coal layer working, foulness of layers, gas
pressure, thickness of coal layers and their structure, solidity of overburden
rocks, coial microcracking and initial velocity of gassing from coals,
volatility of coals, ash content, moisture content, solidity and embrittlement.
Every indicator has been evaluated and their
interrelations and parameters of initiation of sudden outburst were
established. It is concluded that the deep horizons of the field are liable to
the risk of sudden gas outbursts. Fig. 5, Tab. 2, Ref. 15.
Auth.
13.C4.4. Analytical and
numerical methods for solving problems of the stress-strain state of the massif
around the tunnel. /L. Japaridze, T. Gobejishvili/. Mining
Journal. – 2013. – # 1(30). – pp. 15-19. – geo.; abs.: rus., eng.
It is
noted that ilately in the world the practice of calculation of underground
structures by numerical methods has almost driven out the analytical methods of
continuous mechanics. While numerical methods are indispensable for some intricate
problems of geomechanics, the analytical methods of the theory of elasticity
for calculation of tunnels should be a subject of further study and
development. A parallel solution of specific problems with the use of
commercial computer software Phase 2. 7 of “Rockscience” and N.Muskhelishvili
method of Theory of Elasticity was conducted. By the example of the tunnel of
elliptical cross-section, it was shown that the analytical solution in some
cases can be more accurate and comparatively easier as compared with the
numeric one, especially when using the well-known program Matlab. Fig. 7,
Ref.6.
Auth.
13.C4.5. Intensification of
copper ore’s flotation processes using the oil high temperature fractions. /A. Gigineishvili, D.
Tevzadze/. Mining Journal. – 2013. – # 1(30). – pp. 21-22. – geo.; abs.: rus.,
eng.
The object of the
research is the copper ore of Madneuli deposit with the content of copper 0.7%.
A change in the electrode potential value as a result of influence of reagents
on the surface of mineral in the flotation process has been shown. Based on the
research data, the prospects of using high temperature fractions for dressing
the poor copper ore of Madneuli deposit habe been established. Tab. 1, Ref. 5.
Auth.
13.C4.6. The mixed and oxidated
copper-pyrite ore-dressing technology of JSC “Madneuli”. /B. Menabdishvili, A. Abshilava, N. Gugunishvili/. Mining Journal. – 2013. – # 1(30). – pp. 23-27. – geo.; abs.: rus., eng.
It is
noted that lately, together with increasing the depth of mining the open-cast
mines of JSC “Madneuli”, the content of copper in ores has significantly
decreased to very between 0.3–0.5%. All this caused the worsening of dressing’s
factory technological indices. Based on the results of laboratory research, an
adjusted technological scheme is proposed, which envisages the grinding of
flotation concentrates u to 74 m (82–85%), 30-minute aeration and
its further dressing in a separate cycle, as a result of which the
concentrate’s quality improved by 1.5–2.5%. At that, the extraction indices
improve significantly. Fig. 5, Ref. 3.
Auth.
13.C4.7. On some
questions of enrichment of Sazano pegmatites. /N. Gegia, D. Talakhadze, N. Shekriladze, T. Zuliashvili/.
Mining Journal. – 2013. – # 1(30). – pp. 27-31. –
geo.; abs.: rus., eng.
On the
basis of mineralogical, chemical and grain-size analyses of technological
samples of pegmatites of Sazano, the possibility of receiving a concentrate of
potassium spar is established. The process flow diagram, including selective
crushing and electromagnetic separation of the classified material, is
developed. The received product satisfies the standard of the components of
furnace charge necessary for production of china-ware, building ceramics,
coating of welding electrodes, etc.. Tab. 1, Fig. 5, Ref. 6.
Auth.
13.C4.8. The method of
flotation process control. /M. Gamtsemlidze, R.
Enageli, A. Shekiladze/. Mining Journal. –
2013. – # 1(30). – pp. 32-34. – geo.; abs.: rus., eng.
The
controlled and disturbing parameters of flotation process, which have the
greatest effect on enrichment indices, are presented. The most widely used
method of control, which regulates the disturbing parameters, namely the
consumption of reagents. To enhance the efficiency of control, a new method of
systems control has been elaborated, which envisages regulation of the
consumption of collecting and limiting reagents based on the variation of the
ratio between the controlled disturbing parameters (pulp density, content of
clay material in the pulp, the degree of foam mineralization). The solution of
the mentioned system is presented in statics in the form of equations. The
functional structure of automatic control of the flotation process is given and
the principle of its operation is described. Fig.1, Ref. 3.
Auth.
13.C4.9. A crushing
device given the control principle. /M.
Gamtsemlidze, R. Enageli, M. Tutberidze, G. Chkareuli/. Mining Journal. – 2013. – # 1(30). – pp. 35-38. – geo.; abs.: rus., eng.
The
process of crushing of hard-concentrated ores using an original crushing device
is considered. The benfits of using such crusher are described. Fig. 4, Tab.1,
Ref. 8.
Auth.
13.C4.10. Determination
of arsenic content in the neighbouring area of Lukhumi arsenic field and recommendations
about its reduction. /Z. Svanidze, G.
Gunia, T. Tsertsvadze, L. Svanidze /. Mining
Journal. – 2013. – # 1(30). – pp. 39-42. – geo.; abs.: rus., eng.
This work represents a test for determining the
pollution degree of soil and water with toxic metals in Lukhumi arsenic field.
The main objective of the research is to determine the quantitative content of
arsenic in test objects. The Lukhumi arsenic field is one of the largest in
Georgia and attracts attention in terms of economic and environmental
protection aspects. Despite the fact that since 1992 the mining and processing
of arsenic has been suspended there, the ecological situation is still grave,
because of large amount of production waste left after closing of the chemical
factory. The research results show that teh content of arsenic in the test
objects significantly exceeds the maximum permissible concentration. As for
toxic metals, their content in the above region is less or approaches the
maximum permissible concentration. Methods of soil cleaning are proposed in the
form of recommendations. Tab. 2, Ref. 7.
Auth.
13.C4.11. On the explosive
compacting of powders. /E. Chagelishvili, A. Peikrishvili, M. Tsiklauri, T. Pirtskhalava, B. Godibadze, A. Dgebuadze/. Mining Journal. –
2013. – # 1(30). – pp. 47-50. – geo.; abs.: rus., eng.
The investigation
was carried out at Tsulukidze Mining Institute. Based on the principle of
reconstruction of coal industry and the available experience of leading
countries in this field, optimal technical solutions for exploitation of
machine-operated systems for deposit conditions were developed. This implies a
wide application of machines with cutting tools based on hard alloys obtained
by powder metallurgy. A review of methods and possibilities of explosive
treatment of porous materials is made. The set-up, furniture and correspondent
mechanisms of shock wave loading as an integrated system and the ways of
transfer the precursors in different thermodynamic level and structure/phase
conditions are discussed too. Fig. 2, Ref. 6
Auth.
13.C4.12. Basic indicators of
blast-hole drilling works on the construction of motor-car tunnel
Mestia-Khaishi. /R. Mikhelson, S. Khomeriki/. Mining Journal. – 2013. – # 1(30). – pp. 51-56. – geo.; abs.: rus., eng.
The basic solutions about the blast-hole drilling works on tunneling the
motor-car tunnel of Mestia-Khaishi in burrow rocks of 8th and 9th
categories with transverse cross-sections of 98 square meters, carried out
under the direction of the authors, are being presented. For the first time in
domestic practice of tunnel construction, the technology of smooth explosion of
charges with separation of transverse cross sections constructed on two
independent stepwise stalls have been used in order to ensure the stability of
exposed mountain rocks within the scope of the equipment, and maintaining
natural structure of the mass during its explosive loading, also improving the
circumstances of the installation of the roof bolting and lowering the expenses
on the concrete during lining work process. The optimum values of blast-hole
drilling work parameters, also data on total amount of the work expenses and
special cost of the explosive materials are given and also the structure of the
used charges is considered. The technology is
explained with the schemes of the borehole location in the stalls and the
priority of the charges explosion. Fig. 5, Tab. 4, Ref. 6.
Auth.
13.C4.13. Methods for
determining the velocity of detonation of industrial explosives. /Z. Kuchukhidze, A. Apriashvili, G. Bakhutashvili, G. Tkhelidze, D. Khomeriki/. Mining Journal. – 2013. – # 1(30). – pp. 57-59. – geo.; abs.: rus., eng.
The article describes the proven and globally accepted
methods for determining the velocity of detonation of industrial explosives.
The principles of both ionization and optical fibre systems are presented. The
advantages and disadvantages of operating the above mentioned devices are
given. The elaboration of a new type device for determining the velocity of
detonation of industrial explosives is described. The operation of new device
has been tested in field and laboratory conditions. The advantages of the
developed device over its world analogues are grounded. Fig. 3, Ref. 4.
Auth.
13.C4.14. Generalized
calculation algorithm of mechanical-pneumatic dampers for safe exploitation of
pressure hydrotransport systems. /L.
Makharadze, L. Gavasheli, S. Steryakova/. Mining Journal. – 2013. – # 1(30). – pp. 60-63. – geo.; abs.: rus.,
eng.
The
gneralized algorithm of mechanical-pneumatic dampers for safe exploitation of
pressure hydro transport systems is discussed in the article. The working parts
of them are made of flexible-plastic material with different shapes (spherical,
torus, bellows-type, hose-type) and are the whole complex of hermetic flexible
elements full with air. The algorithm completely foresees the parameters of all
the elements, which are impacted by the sudden boost pressure during water
hammer; like as: pipeline, liquid, which flows in it; damper body; adapter
throttling pipe junction, by which damper is connected to pipeline; body
working elements with air inside; flexible-plastic material, by which working
elements of damper are made. Ref. 8.
Auth.
13.C4.15. Aerial tramway system
for gripping and transportation of piece loads of different dimensions. /N. Iashvili/. Mining Journal. – 2013. – # 1(30). – pp. 63-65. – geo.; abs.: rus., eng.
An aerial
tramway system for gripping and transportation of piece load of different
dimensions: cases, barrels, sacks, boxes, rolls, bales etc. has been designed.
The proposed design extends the capabilities of the system and eliminates the
probability of load damage during gripping. Applications include cargo handling
at railway stations, sea and river cargo ports, industrial construction sites,
warehouses, in food and processing industry, etc. Fig. 1, Ref. 4.
Auth.
13.C4.16. On the specifics of
the hydraulic calculation of storm water runoff from the underground premises. /V. Silagadze, M. Jangidze/. Mining Journal. – 2013. – # 1(30). – pp. 65-68. – geo.; abs.: rus., eng.
The
article describes the scheme and how storm waterzuns off from the underground
structures. Approaches to determine the choice of the estimated cost of
drainage canals and pumping systems. Based on the analysis of long-term meteorological
data for the region of showers Sagarejo found, that the integrated volume of
run-off is often more with less intense rainfall. Therefore, for the final
selection of the estimated volume of runoff should be analyzed for different
rainfall intensities and duration of rain. Tab. 3, Ref. 3.
Auth.
13.C4.17. Concerning cutting
inserts to reinforce tools of mining machines. /E. Chagelishvili, A. Peikrishvili, T. Pirtskhalava, M.
Tsiklauri/. Mining Journal. – 2013. – # 1(30). – pp. 68-72.– rus.;
abs.: geo., eng.
The
concept of technical development of Tkibuli-Shaori deposits (TShD) provides
assembling of cleaning and tunneling complexes from conventional blocs
according to individual projects that must be adapted with mining and
geological condition of TShD. During the breaking of coal or breed range cover
all power of cutting engines transmitted slaughtering through cutter that leads
to their intensive wear. It’s established, that in case of new annual design
load capacity of TShD 3500K tone, only for execution of processes for cleaning
the coal recess there is necessity in 125x103pcs of standard cutting
tools. The using of standard cutters in tunneling combine machines the period
of operating time does not exceed 80-90 minute and share cost in depending of
mining-geological conditions may be 37% and more depending on the cost of
driving. There is given recommendation for projected mine of TShD to apply the
strengthening technology of cutting tools developed by researchers of
Tsulukidze Mining Institute based on hot explosive treatment diamond containing
tools from WC and Co. The formation of transient zone between the cutting
material and steel basis provides decreasing of stresses arising during the
cutting process of rocks. From the other hand the diamond inclusions provides
increasing of hardness and cutting characteristics of cutting tools too. Fig.
4, Ref. 13.
Auth.
13.C4.18. Vacuum drive as a
belt bearing. /N. Molodini, R. Molodini/. Mining Journal. – 2013. – # 1(30). – pp. 73-75. – geo.; abs.: rus., eng.
The work
process of a vaccum drum and belt bearing in the elastohydrodynamic regime is
presented. Following the contact areas texture and analysis of results of the
vacuum drive, the main calculation parameter here, as in the case of the belt
bearing, is accepted the generalized Sommerfeld number (S0);
therafter, according to a special special plot – “lubrication regimes of
sluiding tribological situation” – the values of friction coefficient can be
preliminarily estimated. Fig. 1, Ref. 6.
Auth.
13.C4.19. On the determination
of the initial subsidence of loess soil pressure. /G. Chokhonelidze, Z. Kakulia, T. Iashvili/. Mining Journal. – 2013. – # 1(30). – pp. 75-77. – geo.; abs.: rus., eng.
The
article discusses a new method of determining the value of the initial
subsidence of loess soil Ps, which is based on the use of the limit
equilibrium condition of the soil. Usually the value of the initial subsidence
of soil Ps is determined by laboratory tests. Placed in compression
device soil sample moistures and increases the vertical load on the ground. We
measure the pressure, at which the deformation of the soil starts. We propose a
definition of Ps by the test for shear resistance, i.e. subsidence Ps
for this load corresponds the soil shear resistance Sp. Fig.
1, Ref. 3.
Auth.
13.C4.20. Evaluation of extreme
events affecting the Caspian oil and gas pipelines in the Abul-Samsar volcanic
Ridge (Georgia). /A.
Okrostsvaridze, F. Pasquare, D. Tormey, D. Bluashvili, L. Vezzoli/. Mining Journal. – 2013. – # 1(30). – pp. 82-91.- eng.; abs.: rus., geo.
Identified
and quantified are new seismic and volcanic hazards threatening the strategic
Caspian oil and gas pipelines running through Georgia in the vicinity of the
Abul-Samsari volcanic Ridge and evaluated arte the risk reduction and
monitoring measures. As regards the seismic hazard, a major, NW-SE trending
strike-slip fault is identified; based on an analysis of fault planes along
this major transcurrent structure and about N-S trend of the maximum, the
horizontal compressive stress (1) was determined, which is in good agreement
with data instrumentally derived after the 1986, M 5.6 Paravani earthquake and
its aftershock. Particularly notable is the strong alignment of volcanic vents
along about N-S trend, that suggests a magma rising controlled by about N-S
Directed 1. The result of our analysis is that the Baku-Tbilisi-Ceyhan (BTC)
oil pipeline, as well the Baku-Tbilisi-Erzurum South Caucasian natural gas
pipeline (SCP) were so designed as significantly reduce the risk posed by the
newly-identified geohazards. However, since the consequences of long-term
shut-down would be very damaging to the economies of Western Europe, we
conclude, that the regionally significant BTC and SCP warrant greater
protections, described in the final section of the work. The overall objective
of our effort is to present the results in a matrix framework that allows the
technical information to be used further in the decision-making process, with
the goal of reducing the uncertainty in the final decision. Fig. 6, Ref. 30.
Auth.
13.C4.21. The method of
measuring the form and size of a sample in testing stone materials for
stretching. /N. Bochorishvili, N. Razmadze, N.
Ratiani, I. Bochorishvili, M. Kitoshvili/. Mining Journal. – 2013. – # 1(30). – pp. 92-96. – geo.; abs.: rus., eng.
The work
deals with the studies, which made it possible to establish the forms, sizes,
accessories and other tools of samples necessary for studying the
physical-mechanical features of construction materials. Based on systemic experimental
studies, the work analyzes the resistance of hard materials on stretching,
their dependence upon other affecting factors, scales of samples (size) and
place of distribution of samples. Multiple experimental studies established
rational use of natural use of natural construction and facing materials
prolonging the life of building and improving their architectural design. Fig.
1, Tab. 3, Ref. 9.
Auth.
13.C4.22. Resistance of stone
materials during pure start tension resistance. /N. Bochorishvili, N. Razmadze, I. Bochorishvili, N.
Ratiani, M. Kitoshvili/. Mining Journal. –
2013. – # 1(30). – pp. 96-99. – geo.; abs.: rus., eng.
The work
establishes a basic physical-mechanical feature of rocks – strength by rolling
round profile axes. It should be noted that experiments on stone materials held
by the same method may be used for getting interim resistance characteristics
towards stretching. Especially it should be mentioned that the outcomes of lab
experiments on stone materials do not give the absolute value of force impact
resistivity, but rather the opportunity of conventional evaluation of the physical-mechanical
characteristics of materials, which depends on testing sample type and methods
of experiment. Ref. 12.
Auth.
13.C4.23. Once again on the
precursors of earthquake. /L. Zuroshvili, R.
Managadze, J. Zuroshvili/.Mining Journal.–2013.–
# 1(30). – pp. 101-104. – geo.; abs.: rus., eng.
The paper
deals with ithe ssues of earthquake prediction. In particular, it describes the
effect of earthquakes on the atmosphere and the possibility of their
predicttion based on the disturbances in the layers of ionosphere. The paper is
based on the results of studying the radiation of the layer F2 of
the ionosphere. The studies show a resemblance between the periods of vibration
of several given parameters (such as, Fo the critical frequency) and
the periods of seismic gravitation activities. Based on the example of the
earthquake known as SAMACHABLO, which took place in 1991, an assumption is made
that lengthy vibrations in the ionosphere are caused by seismic gravitational
activities of the Earth. Fig. 5, Ref. 4.
Auth.
13.C4.24. Increase in cement
mortar adhesion strength and improvement of cement stone adhesion with contact
surfaces during well cementation. /G.
Varshalomidze, V. Khitarishvili, G. Khetsuriani/. Mining Journal. – 2013. – # 1(30). – pp. 105-107. – geo.; abs.: rus.,
eng.
Increase in adhesive strength of cement stone
with rocks containing borehole walls and with casting columns at the contact
surface plays a key role in ensuring impermeability of annular space during
well cementation. With this purpose we studied effect of special additives on
the adhesion (agglutination) force of selected cement mortar and on the
strength of adhesion of cement stone made from it with contact surface. It is
determined that Concrepol addition into grouting mortar most of all increases
strength of adhesion with contact surface. Its use in wells for carrying out of
grouting works will significantly improve the quality of casting column cementation.
Fig. 4, Tab. 1, Ref. 4.
Auth.
13.C4.25. Perlite use as cement
active additive during well cementation. /G.
Varshalomidze, V. Khitarishvili, G. Khetsuriani/. Mining Journal. – 2013. – # 1(30). – pp. 108-112. – geo.; abs.: rus.,
eng.
Grouting
mixture manufacturing for well cementation is carried out taking into account
the geological and technical conditions, in particular an addition of perlite
rock as an active additive is recommended during cementation of fractured and
absorptive intervals. Mixture of this composition is a light grouting mortar,
from which is possible to receive strength cement stone. Fig. 3, Tab. 5, Ref.
3.
Auth.
13.C4.26. Requirements to
technical safety upon recept, delivery and storage of oil products at an
petroleum storage depot. /A. Bezhanishvili, D.
Dumbadze, J. Iosebidze, G. Mikadze, D. Vardoev/. Mining Journal. – 2013. – # 1(30). – pp. 115-118. – geo.; abs.: rus.,
eng.
Safety
rules elaborated to ensure safe operation of petroleum storage depots are
discussed. The operations subject to safety rules are enumerated. Ref. 2.
Auth.
13.C4.27. On the determination of the optimal length of lava
under conditions of Tkibuli-Shaori coal deposit development. /T. Phirtskhalava/. Mining Journal. – 2013. – # 2(31).
– pp. 15-17. – rus.; abs.: geo., eng.
It is
shown that in the leading coal industry countries the a chage in the lava
length fromn 300 m up to 450 m has been common since the 1990s, which was one
of the ways to improve the technical and economic indicators of underground
coal mining. For specific geological conditions of the development of
Tkibuli-Shaori field (TShM) a solution to the problem of finding the optimal
length of lava Ll.opt involved the development of an economic and
mathematical model of the excavation site through subsequent differentiation of
its implementation function. Ll.opt value was determined by finding the minimum current cost C
for 1 ton of coal in the first derivative of f (Ll)’ = 0.
The calculation found that under conditions for TShM mining, a shuttle-like
coal winning machine Ll.opt ≈ 120 m, and from coal mining scheme with two
harvesters Ll.opt ≈ 250 m. Fig. 2, Tab. 1, Ref. 10.
Auth.
13.C4.28. Rock bump’s forecast. /D. Kupatadze/. Mining Journal. – 2013. – #
2(31). – pp.18-21. – geo.; abs.: rus., eng.
The article considers
one of the serious problems of control of rock bumps - their prediction,
namely, determination of the time and place of origin of rock bumps in terms of
their danger and degree on separate sites of layers. Several methods of
prediction of possible rock bumps are considered, such as an analysis of mining
and technical conditions, a complex method and a method of microseismic
installations. Fig. 3. Ref. 4.
Auth.
13.C4.29. Static analysis of a single-span cut-and-cover tunnel. /L.
Japaridze/. Mining journal. – 2013. – # 2(31). – pp. 21-25. – geo.; abs.: rus.,
eng.
An
analytical apparatus for static analysis of a single-span frame of the
cut-and-cover tunnel structures using the method of forces and displacements is
considered. The work is stimulated by technical manual of the National Highway
Institute of U.S. Department of Transportation (FHWA-NHI-10-034), where “the
classical force and displacement methods to be used in the structural analysis
of cut-and-cover tunnel structures” are recommended. Other numerical methods
may be used, but will rarely yield results that vary significantly from those
obtained with the classical methods. Fig. 3, Tab. 1, Ref. 5.
Auth.
13.C4.30. Application of the “slurry wall” technique in
underground construction. /L. Japaridze, N. Kukuladze, T. Phirtskhalava/. Mining
Journal. – 2013. – # 2(31). – pp. 25-29. – geo.; abs.: rus., eng.
The
application of the slurry wall, or slurry trench technique in underground
construction is considered as the most progressive method. The advantages of
its application are enumerated. Fig. 3, Tab. 2, Ref. 11.
Auth.
13.C4.31. Modern surveying works in tunnel construction. /A. Kikabidze, I. Erkomaishvili/. Mining Journal. – 2013.
– # 2(31). – pp. 30-33. – geo.; abs.: rus., eng.
The work
deals with the problems that might arise during high-speed tunneling excavation
and the ways of their solving. Considered is the applicable scope of a TBM
combine for high-speed tunneling excavation, also a drilling-and-blasting way
of tunneling; shown is the role of surveyor service for providing a high-speed
tunneling excavation, also a monitoring system ZED–261, which provides high
speed of excavation and monitoring accuracy. Fig. 3, Ref. 3.
Auth.
13.C4.32. Issues of selection
of optimal technology for processing stored tailings of Madneuli copper
flotation mill.
/N. Jikia, Ts. Dalakishvili, R. Sturua, D. Talakhadze, G. Gelovani, J.
Sherazadishvili/. Mining Journal. – 2013. – # 2(31). – pp. 34-38. – geo.; abs.:
rus., eng.
Processing of
tailings stored during the operation period of Madneuli copper concentrating plant
(since 1975) enables to produce an additional commercial product of copper and
gold. The article presents a technology of preliminary concentration of
valuable elements (copper and gold) from the stored tailings. The developed
technology allows obtaining the copper-containing pyrite concentrate with
14.05% output; with copper content of 1.36 g/t, copper recovery 83,22%; with
gold content of 3.78 g/t, with gold recovery 84.31. Fig. 1, Tab. 5, Ref. 4.
Auth.
13.C4.33. Technical requirements to the friction units of a
vacuum drive. /N. Molodini, R. Molodini/.Mining Journal.–2013.–
# 2(31). – pp.38- 40. – geo.; abs.: rus., eng.
A
list of friction units and designation of well-known
vacuum-drive designs are given; the
principal technical reguirements to the elaboration and calculation of contact
surfactes of vacuum drives are considered. Ref. 6.
Auth.
13.C4.34. Contemporary methods and guidelines for the protection
against methane explosion in coal mines. /E. Mataradze, A. BezhanishvilI/. Mining Journal. – 2013. – # 2(31). – pp. 58-64. –
geo.; abs.: rus., eng.
The paper
overviews the standards applied in EU Member States as well as Georgiam
regulatory documents in the field of prevention and protection against
explosions in coal mines and other hazardous industrial objects. An analysis
shows the necessity of harmonizing the Georgian legislation and safety
guidelines with the relevant EU standards. Fig. 2, Ref. 29.
Auth.
13.C4.35. Establishment of optimal conditions of fire extinguishing
for extinguishing powders. /L. Gurchumelia, I.
Gujabidze, F. Bejanov, V. Tkemaladze, L. Tkemaladze/. Mining Journal. –
2013. – # 2(31). – pp. 64-67. – geo.; abs.: rus., eng.
The work
describes laboratory (experimental) methods developed taking into account the
standard conditions of fires of different types that make it possible to
determine the fire extinguishing time and the minimum consumprion of extringuishing
powders, also the dependence of the time of extinguishing on the intensity of
powder supply. On the basis of such experimental researches, it is possible to
establish the optimal conditions for extinguishing fires, implying the selection
of optimal intensity of powder supply to the seat of fire, when the minimal
specific consumption of the powder ensures extinguishing of the fires in the
minimum time. Fig. 3, Tab. 1, Ref. 5.
Auth.
13.C4.36. Investigation of the process of
plating with graphite copper. /G. Papava, V. Sherozia, N. Dokhturashvili, N. Maisuradze, M.
Gurgenishvili. I. Chitrekashvili/. GEN. – 2013. – # 3. –
pp. 48-52. –geo.; abs.: eng.
The article deals
with the process of plating with graphite powder copper by using copper salt.
The process is three-stage. The first stage consists in deposition of a copper
dioxide layer on the graphite powder surface, the second – in its
transformation into copper oxide, the third – in reduction of this oxide to
crystalline copper. The results of investigation of the effect of the
parameters of abovementioned processes on the plating quality are presented.
Fig. 4, Ref. 9.
Auth.
13.C4.37. Development
of high productivity mechanical cleavage technology of graphene-like
nanoparticles manufacturing. /H. Weinert, V. Leshchynsky/. Nano
Studies. – 2013. – #
7. – pp.
97-106.
– eng.
Mechanical cleavage by scotch tape was the first method
which was successfully applied by Geim and Novoselov to prepare free-standing
graphene and has been proven to work on other layered materials, such as hBN7
and MoS2. During mechanical cleavage, the pulling force can easily
break the weak van der Waals interaction between graphene layers and leave the
strongly sp2 bonded in plane structure intact. A shear stress can
have a similar effect. Development and application of shear-tension loading
schemes to generate thin graphite platelets and MoS2 sheets are the
aim of this paper. The mechanically peeled 2D sheets have fewer defects than
those produced by chemical methods. However, mechanical cleavage by Scotch tape
has extremely low yield. If a mechanical process can be developed to treat tens
of thousands of particles in one run and to peel each particle hundreds of
times, a large number of high-quality nanosheets can be harvested for studies
and practical applications. The novel ball and belt milling technology schemes
and devices are applied for thickness reduction of layered materials and even
for MoS2 graphene-like nanoparticles production. The structure and
properties of obtained materials are discussed. Fig. 9, Ref. 22.
Auth.
13.C4.38. Preparation
Tm3S2 films
by flash vacuum thermal evaporation.
/M. Teteloshvili, Z. Jabua, A. Gigineishvili/. Nano
Studies. – 2013. – # 7. – pp. 229-232.
– rus.
A process is described for the growth of thin crystalline
Tm3S2 films on different substrate (glass-ceramic, leukosapphire,
single-crystalline silicon) by flash vacuum thermal evaporation from
preliminary synthesized bulk crystal of Tm3S2. Thin films
had Tl2O3-type cubic crystal structure with lattice
parameter a=12.47Ao. Using the method of X-ray
microanalysis, it was shown that obtained films contain 40.1at.%Tm and
59.9at.%S. According to the secondary
X-rays image of the surface of prepared films, the components Tm and S are
distributed on a surface homogeneously. Fig. 3, Ref. 12.
Auth.
C5. Mechanical Engineering. Instrument-making
13.C5.1. The determination of slide ratio of wheeled furrower. /T. Janelidze, V. Samkharadze/. Collected Papers of Institute of Water Management. – 2013. – # 68. – pp. 211-213. – geo.; abs.: geo., eng., rus.
A method of reducing
the slide ratio of a wheeled furrower with the functioning surface of
transitional radius is described. It was divided into three constituent with
possibility of rotation independently of one another. The laboratory, field and
industrial experiments of the wheeled furrower on Kolkheti Lowland showed that
the above-mentioned working body can cut the temporary drainage furrows to
ensure the admnission ond passage of surface waters. Fig. 1, Ref. 3.
Auth.
13.C5.2. A new type of flexible structure.
/D. Pirkulashvili/. Building. – 2013. – # 2(29). – pp. 133-137. – geo.; abs.: geo., eng.
The article presents
a new type of transformable structure, its description of the principle of
operation. The structure consists of two parts, the opening is provided with
the pneumatic cushions and the support brackets, and the folding is achieved by
twisting a steel rope on the reels. A metal arched frame and pneumatic cushions
are used as the bearing elements. Fig.7, Ref. 1.
Auth.
13.C5.3. Scanning tunneling
microscope – a device to see atoms and molecules. /Ts.
Ramishvili/. Nano Studies. – 2013. – # 7. – pp. 335-342. – geo.
The
article is dedicated to
the memory of the recently deceased Swiss physicist Heinrich Rohrer, Nobel
laureate and one of the authors, creators of the scanning tunneling microscope,
which made it possible for the first time to see the atoms on the surface of
materials. Fig. 4, Tab. 1,
Ref.
2.
Auth.
13.C5.4. Acoustic
spectrometer. /D. Driaev, K. Kakhiani, F. Akopov, S. Tsakadze/. Nano
Studies. – 2013. – #
8. – pp.
283‑288.
– rus.
A device for measurement of internal friction and the
elasticity module in solids, in which losses on external friction are minimized
by use as a sample vibrator of a tuning fork of new (three-reed) type is
described. Fig. 2, Ref. 3.
Auth.
13.Ñ6.1. Deep purification of water-borne wastes of
spinning and cotton manufacturing by ultrafiltration method. /A. Sarukhanyan, V. Shamyan/. Collected Papers of
Institute of Water Management. – 2013. – # 68. – pp. 165-169. – rus.; abs.: geo., eng., rus.
Diaphragm technology
more and more takes up the leading positions in the spheres of deep purification of residential water
supply and especially of industrial waste waters, forcing out such traditional methods as water clarification, filtration, floatation, sedimentation, adsorption, ozonization. In
industrial waste waters treatment the diaphragm technology for the most part is a supplement to these methods and is used as the
final stage of deep purification. This paper for the first time suggests to purify sulfur dyeing waste waters from
sulphides in thinlayer sediment ation reservoirs, reducing the portion of mineral coagulant bivalent iron
sulphate from 3,0-3,5 g/l to 400-700mg/l and the final
purification carry out by a ultra filtration equipment operating by a simplified
procedure. Fig. 3, Tab. 1, Ref. 7.
Auth.
13.Ñ6.2. Regulation of a range of
products through the optimization of standard parameters. /M. Grdzelidze, M. Shalamberidze/. Goni. – 2014. – # 1. – pp. 48-56. – geo.; abs.: geo., eng.
The methods of
regulating standard footwear sizes and forming new size ranges are discussed.
Tab. 3, Fig. 1, Ref. 3.
Auth.
13.Ñ6.3. The development of a principal concept of a dummy with the non-statistical
surface. /M. Datuashvili, I. Charkviani/. GEN. – 2013.– # 3. –
pp. 109-111. – rus.; abs.: eng.
The article deals with the problems of the use of dummies in the process
of individual manufacture of garments. The process of fitting is
a rather difficult
and tedious process for both the manufacturer and the consumer. The task was
to design a
universal dummy with the non-statistical surface, through moving individual segments of which a
figure identical to the required figure can be achieved to successfully replace
the required object in the process of making customer-tailored clothes. Fig. 1,
Ref. 3.
Auth.
13.Ñ7.1. New technology of production of
antioxidant beverages from wild blueberries and blackberries. /N. Baghaturia, N. Begiashvili, E.
Uturashvili, G. Grigorashvili, I. Kupatadze, A. Khotivari, V. Nakopia/.
Agrarian-economic Science and Technologies. – 2014. – # 1. – pp. 57-61. – geo.; abs.: geo., eng.
The physical and
chemical characteristics of the beverages made of blueberry and blackberry
fruit were studied and their ant ioxidant activity was determined. On the basis
of the conducted research, the beverages were found, besides containing useful
substances, to be rich in antioxidants (polyphenols, vitamin C). Given their
high antioxidant activity, they can be used by the general public for
medical-preventive purposes to prevent and treat many dangerous diseases and
their complications. Tab. 1, Ref. 3
Auth.
13.Ñ7.2. Research in the technology of
natural bread conditioners. /N. Baghaturia, N. Begiashvili, L. Kotorashvili, M. Ormotsadze, B.
Baghaturia/. Agrarian-economic Science and Technologies. – 2014. – # 1. – pp. 62-69. – geo.; abs.: geo., eng.
Technology of producing natural bread conditioners developed in Georgia
is considered. It is based on the extraction of hydropectine from the fruits of
wild plants - hawthorn, dog rose, sea-buckthorn and jujube. The
possible use of the obtained hydropectine in bakery production has been
scientifically based and and experimentally substantiated. Ref. 5.
Auth.
3.Ñ7.3. Feijoa
fruit quick freezing method to determine the optimal conditions for storage. /E. Uturashvili, I. Kupatadze, M. Demeniuk, L.
Kotorashvili, l. Moistsrafishvili, Z. Alania/. Agrarian-economic Science and Technologies. – 2014. – # 1. – pp. 70-75. – geo.; abs.: geo., eng.
The work presents the
research results of quick freezing storage method of the unique plant feijoa
that has useful and medicinal properties. The optimal conditions for the feijoa
fruit freezing, storage, transportation and defrosting are studied and
established. On the basis of the obtained results it is established that the
feijoa fruits frozen with the quick freezing method can be stored for 10 months
with minimal loses and maximal keeping of useful properties. Tab. 1, ٌRef. 3.
Auth.
13.Ñ7.4. Hygroscopic properties of dried
savory and marigold. /N. Alkhanashvili, L.
Ejibia/. Agrarian-economic Science and Technologies. – 2013. – # 3. – pp. 45-50. – geo.; abs.: geo., eng.
To establish the
optimal conditions of dried and ground savory (Satureja hortensis L.) and marigold (Tagetes patula L.), their hygroscopic properties were studied in
glass vessels specifically made for this purpose, which make it possible to
observe moisture sorption kinetics of the product. In experiments, specific
humidity of the ambient air varied within 20-90% at 18-200
temperature. The experimental results were processed by building sorption
isotherms, which reflect dependence of the product’s equilibrium moisture on
the relative humidity at the given temperature. When the product’s humidity is
known, the sorption isotherms make it possible to select such conditions of
savory storage that exclude moisture sorption or desorption. According to an
analysis of the sorption kinetics observation results, the speed of moisture
sorption by the product during different relative humidity is different. During
the high relative humidity the main portion of humidity will be absorbed by the
product in 4-6 days from the beginning of the experiment. Long-term storage of
savory and marigold in a storage where the relative air humidity is 75% at
18-200 temperature is not recommended. Fig. 2, Tab. 1, Ref. 4.
Auth.
13.Ñ7.5. Development of a cost-effective
artificial savory drying technology. /N. Alkhanashvili, M.
Demeniuk/. Agrarian-economic Science
and Technologies. – 2013. – # 3.
– pp. 51-57. – geo.; abs.: geo., eng.
An artificial savory
drying technology developed at the Research Institute of Food Insustry,
including the preparation of the raw material for drying, drying, dried savory
inspection, milling and packing, is presented. The characteristics of savory,
as an object of drying, were studied, the drying method and the dryer’s design
were selected and the optimal drying mode was established. Fig. 3, Tab. 1, Ref.
3.
Auth.
13.Ñ7.6. Investigation of
protective activity of wild plum pectin. /N. Baghaturia, I. Kupatadze, Sh. Muladze/. Agrarian-economic Science and Technologies. – 2013. – # 3. – pp. 58-63. – geo.; abs.: geo., eng.
Experiments on laboratory animals (albino
rats) the functional changes in the organism upon lead intoxication against the
background of taking a pectin preparation obtained from wild plums (tkemali)
have found that the pectin preparation interferes with the accumulation of lead
in the organs and tissues of the laboratory animals and facilitates the
detoxification process. Tab. 2, Ref. 4
Auth.
13.Ñ7.7. Application of Georgian wines for
medicinal purposes – essential component of a new trend – preventive
medicine. /T. Tsivtsivadze, N. Chigogidze, R. Kldiashvili, E.
Chigogidze, R. Skhiladze, Zh. Gabrichidze, G. Sulakvelidze/. GEN. – 2013. – #
3. – pp. 63-66. – rus.; abs.: eng.
The
article deals with a new trend – preventive medicine. Prevention of such
serious and dangerous diseases as hypertension, atherosclerosis, heart attack,
and apoplexy, which in 70% of cases are the cause of death, should be carried
out as early as possible, even at a young age. During aging, blood vessels
inevitably accumulate unhealthy symptoms. The concept of treatment without
drugs on the basis of moderate consumption of aged Georgian wines made of
unique endemic grape varieties was developed. The data on the chemical
composition of Georgian wines and their unique bioactive components are
considered. The prospects for therapeutic and prophylactic use of Georgian
wines in preventive medicine, reducing the risk of serious diseases and their
further development are discussed. As a result of our long-term and
wide-ranging research, a universal complex non-alcoholic wine concentrate from
Georgian red wines was elaborated. It is a source of natural antioxidants –
bioflavonoids, polyphenolic compounds, stilbene, terpenoids, plant steroids,
lactones, etc. Furthermore, it comprises fructosyl derivatives of amino acids
and fructo-peptids that provide a stimulating effect on progenitor cells of the
spinal cord, which is especially important in cancer radiotherapy. The
concentrate is suitable for intensive children's nutrition as it contains no
alcohol. The product is very useful for athletes during their physical training
for a competition, because it is a natural stimulator and an energy tonic. The
protective action on blood vessels is a distinctive peculiarity of natural red
wines, which is expressed strongly by the Georgian varieties Saperavi,
Dzvelshavi, Tavkveri, Ojaleshi, Akhasheni, Mukuzani, Teliani, Napareuli, etc.
Ref. 9.
Auth.
13.Ñ7.8. Nanosilver in the red winemaking
technology and the inhibition of oxidation of phenol compounds. /N. Ebelashvili, L. Shubladze, Sh. Shatirishvili, N. Bibiluri, D.
Okruashvili, M. Mdinaradze/. GEN. – 2013.– # 3. – pp. 67-80. – rus.; abs.: eng.
The content of
catechines, flavanols, carbolic acids and vanilic aldehyde was determined in
red wine at different stages of the production process by high-performance
liquid chromatography (HPLC). It was revealed that after lactic fermentation
and removal of the wine from the residue, the treatment of the wine with 0.6
mg/dm3 nanosilver is very effective for inhibiting the oxidation of
phenol compounds in the wine storage process. Fig. 10, Ref. 10.
Auth.
13.Ñ7.9. Investigation of the impact of
the application of nanostructured silver during the process of drawing over the
white wine material on wine characteristics. /N.
Ebelashvili, M. Melikishvili, G. Mikadze/. GEN. – 2013. – # 3. – pp. 81-84. –
geo.; abs.: eng.
Cadifite and
different doses of nanostructured silver were used during the process of
drawing over the wine material produced from the Chinuri grape cultivar. Two
months later the following parameters were determined in the wine material:
basic conditional characteristics, total content of phenol compounds, and
concentrations of tartaric, malic and lactic acids. It was found that in the
course of drawing over the wine material, 50 mg/l cadifite (sulfur dioxide) and
0.6 mg/l had an identical effect on the characteristics of the wine material.
Tab. 1, Ref. 12.
Auth.
13.Ñ7.10. Selection of
chromatographic columns and determination of the operational characteristics
for detection of terpene compounds in grapes and wine. /M. Khositashvili, Z.
Okropiridze, T. Kituashvili/. GEN. – 2013. – # 3. – pp. 84-86.
– geo.; abs.: eng.
The article deals with the selection of gas-liquid chromatographic
columns and the determination of the operational characteristics for
quantitative and qualitative analyses of terpene compounds in grapes and wine.
Ref. 4.
Auth.
13.Ñ7.11. Identification of
volatile components of grapes and wine and their quantitative calculation. /M. Khositashvili, Z. Okropiridze,T. Kituashvili/. GEN. – 2013. – # 3. – pp. 87-89. – geo.; abs.: eng.
The article deals with the identification of volatile substances in
grapes and wine and their quantitative determination by gas-liquid
chromatography. The Kovats index was determined for some of volatile aromatic
components.Tab. 1, Ref. 4.
Auth.
13.Ñ7.12. Bee
products – source of biologically active substances. /D. Tavdidishvili, Ts. Khutsidze, M. Pkhakadze/. GEN. – 2013. – # 4. – pp. 134-137. – geo.; abs.: eng.
Nowadays it is
topical to use natural, ecologically safe raw materials rich in essential
nutrients in the production of food. Among such raw materials, bee products
deserve a special attention. The article deals with the composition and the content
of biologically active substances of traditional and insufficiently known
bee-farming products, the spectrum of their physiological effects, their impact
on the human organism and their applicability in food, pharmaceutical and other
industries. Fig. 1, Ref. 6.
Auth.
13.Ñ7.13. The prospects of small business development in food
industry of Georgia. /M. Sanikidze/. Ekonomisti. – 2013. – # 1. – pp. 74-80. – geo.; abs.:
eng., geo., rus.
SMEs are a substantial and integral part of a market economic system. Several
factors, such as
peculiarity of the sectoral structure of Georgia, terrain, climate conditions
and population density, generate the need for the development of small and
medium-sized enterprises. According to
baseline surveys by Georgian municipalities, the majority of existing enterprises are small or medium.Most of them are engaged in food industry. In spite of the fact that SMEs are found in every region of Georgia,
the share of their production level is relatively low in total output (5.4%).
It should be noted that there is a good opportunity for Georgia to produce
environmentally safe and
competitive goods in the rural sector and
a long-term perspective to actively participate on the world market. Ref. 6.
Auth.
C8. Construction. Architecture
13.Ñ8.1. Permanent frameworks in monolithic house-building. /Z. Ezugbaia, I.
Iremashvili, L. Chaladze, A. Ezugbaia/. Collected Papers of Institute of Water
Management. – 2013. – # 68. – pp. 64-71. – geo.; abs.: geo.,
eng., rus.
The issues of
application of highly effective permanent frameworks in monolithic
house-building are discussed. The modern products of MANTO, FIRA, TISSEN, NOE,
MEVA, VELOX and other companies are proposed, the application of which might
significantly reduce the total cost, labor cost and terms of construction. Fig.
13, Ref. 4.
Auth.
13.Ñ8.2. A complex of floating hydraulic engineering structures of a new type storm mitigation
system and prospects of its application. /A. Prangishvili, Z. Tsikhelashvili, T. Gvelesiani, T. Batsikadze, N. Chkheidze, G. Dolidze/. Collected Papers of Institute of Water Management. – 2013. – # 68. – pp.179-182. – geo.; abs.: geo., eng., rus.
A complex of engineering
structures for effective sea storm waves damping is
proposed. At first its location is planned in the sea
shelf at some distance from the shore zone (Batumi
Boulevard and Adlia Airport). The purpose of
the complex is both the decrease of the sea shore (beach) washing out and the improvement of functioning of a rainfall sewerage system under storm conditions. Also, the construction of breakwaters in the Batumi and
Poti port areas would be possible. Ref. 5.
Auth.
13.Ñ8.3. On some problems of plasticity
theory. /T. Batsikadze, V. Sokhadze/. Building. – 2013. – # 2(29). – ðð. 6-12. – geo.; abs.: geo., eng.
The article considers
the modern problems of plasticity theory that have arisen due to creation of a
wide range of new composite materials characterized by anisotropic properties
in construction practice on the one hand and modern technological processes on
the other hand. Ref. 5.
Auth.
13.Ñ8.4. The engineering solutions of
building’s walls. /Sh. Bakanidze, B.
Surguladze, N. Mskhiladze, I. Chitadze/.
Building. – 2013. – # 2(29) – pp. 13-19. – geo.; abs.: geo., eng.
The options of
engineering solutions of load-bearing walls of a building are considered. The
options of single-layer and double-layer walls made of different materials are
compared in terms of technical and economic indices. The changes in material
capacity and cost of the walls according to the building’s number of stories
are analyzed. The favorable option of the engineering solution of the walls is
found. Fig. 4, Tab. 5, Ref. 3.
Auth.
13.Ñ8.5. A new engineering solution of a
composed wood-metal triangular girder truss. /T. Khmelidze, G. Kavtaria, D. Jugashvili/. Building. – 2013. – # 2(29). – pp. 20-26. – geo.; abs.: geo., eng.
The nomenclature of
wood-metal girders applied in construction, their positive and negative
features are considered. A new option of a composed wood-metal triangular
girder trusses is proposed. A comparison table of the economic indicators of
different types of load-bearing structures of the 18m-spanned overhead cover is
made. Fig. 4, Tab. 1, Ref. 6.
Auth.
13.Ñ8.6. General characteristics of
city-forming factors. /N.
Tevzadze, B. Tatishvili/. Building. – 2013. – # 2(29). – pp. 32-35. – geo.; abs.: geo., eng.
The article reviews
city-forming factors: relief, water resources, green plantations, and climate.
Specific characteristics of these factors are identified and in each specific
case the necessity of appropriate account of several or all of the factors is
determined. The city-forming factors are presented as necessary prerequisites
for creation and development as well as architectural and artistic expression
of populated areas. Ref. 2.
Auth.
13.Ñ8.7.
Stability of a uniformly distributed in two directions load-pressed and
contour-supported homogeneous plate. /A. Kvaratskhelia/. Building. – 2013. – # 2(29). – pp. 36-40. –
geo.; abs.: geo., eng.
The article gives a solution of structural mechanics task of
homogeneous plates. The precision degree of the obtained results is analyzed. A
comparison of the obtained results with the exact solution has shown that for all the values characterizing the plate’s stress-strain state the
error of the proposed theory does not exceed 5% and is generally in the range
of 0.5-3%. Ref. 5.
Auth.
13.Ñ8.8. Stress of a uniformly loaded body
given the originated volume forces. /N. Berishvili, R. Giorgobiani, G. Javakhishvili/. Building. – 2013. – # 2(29). – pp. 41-44. – eng.; abs.: geo., eng.
The work considers
the state of stress of a prismatic body loaded by three-sided compressive,
uniformly distributed, external load. The obtained solution indicates of the
arising of tension stresses in definite parts of the body, i.e. unlike a
similar classical task, the state q non-uniform stress is observable. Fig. 1,
Ref. 3.
Auth.
13.Ñ8.9. The load-carrying (strength)
capacity of reinforced concrete structures at static and seismic impacts. /L. Avalishvili, D. Revazishvili, Kh.
Gorjoladze/. Building. – 2013. – # 2(29). – pp. 45-50. – geo.; abs.: geo., eng.
The present work
deals with a theoretical research of seismicity of reinforced concrete skeleton
constructions; in particular, by computer computations within one-mass dynamic
design diagram and by variation of geometric parameters of the reinforced
concrete elements the seismic stresses for up to 8 or 9 magnitude seismic
intensity loads were obtained. The result in the form of a table will
significantly simplify the designer’s efforts. In addition, the investigated
skeleton structure’s dynamic and static load-bearing capacity (strength)
characteristics were computed and compared with similar results of an
experimental study of identical reinforced concrete skeleton structure. The
causes of the dynamic strength increase as compared with the static one are
explianed. Fig. 2, Tab. 3, Ref. 5.
Auth.
13.Ñ8.10. Superplasticizers - effective
means of new generation concrete making. /M. Turdzeladze, l. Loladze, Z. Karumidze/. Building. – 2013. – # 2(29). – pp. 51-54. – geo.; abs.: geo., eng.
The article considers
the role of concrete mixture diluting, plasticizing additives in high-strength
concrete fabrication; the classification according to compounds and the
principal effect of the mechanism of action given; the mechanism of action of
the new generation of superplasticizers (polycarboxylites and polyacrylates)
and efficiency in hyper-dilution of mixtures are presented and explained. Fig.
1, Tab. 1, Ref. 11.
Auth.
13.Ñ8.11. Realization and problems of urban
planning projects of residential areas of the 1960s-1980s. /M. Bolkvadze/. Building. – 2013. – # 2(29). – pp. 55-57. – geo.; abs.: geo., eng.
The
realization of urban planning projects of new housing development in Tbilisi in
the 60s-80s and the follow-up construction problems are discussed. Such an
analysis will facilitate the perspective development of these districts. Ref.
3.
Auth.
13.Ñ8.12. Modern composite building
materials. /L. Ugulava/. Building. – 2013. – # 2(29). – pp. 58-60. – geo.; abs.: geo., eng.
The history of
composite materials, preconditions of their making, their components - the
matrix and fillers are considered. Fig. 1, Ref. 2.
Auth.
13.Ñ8.13. Effective self-hardening concrete
used in construction. /A. Nadiradze/. Building. – 2013. – # 2(29). – pp. 61-64. – geo.; abs.: geo.
Research in
self-hardening concrete and its wide application have begun since 1980, in 15
countries worldwide, including Georgia. For production of self-hardening
concrete the well-known super plasticizers are used in addition with the new
polymeric polycarboxylite. As a result, fluid of the concrete mix significantly
increases, conditioning its self-hardening. The concrete is recommended to be
used in the prefabricated reinforced concrete industry, as well as in the
construction of monolithic structures, restoration and reinforcement of
structures. Tab. 1, Ref. 4.
Auth.
13.Ñ8.14. Determining minor elastic plastic
deformations in an inclined cylindrical shell. /I. Kakutashvili, N. Javakhishvili, L.
Korganashvili/. Building. – 2013. – # 2(29). – pp. 72-77. – geo.; abs.: geo., eng.
The calculation tasks
of thin-walled structures, when non-elastic deformations are to be taken into
account, are associated with considerable difficulties caused by the non-linear
dependence between stresses and deformations. For solving such problems, most
convenient in terms of a numerical realization is the A. Iliushin’s minor
elastic-plastic deformation theory. However, despite the relative simplicity,
the computed stiffness is so important that the obtaining of actual numerical
results in the case of strong physical non-linearity will be is possible only
in the case of definite types of boundary problems. Fig. 3, Ref. 3.
Auth.
13.Ñ8.15. Technological solutions for
replacing bearing walls. /I.
Kvaraia/. Building. – 2013. – # 2(29). – pp. 82-85. – geo.; abs.: geo.
The paper discusses a
technological process of replacing an old brick building and the overall
load-bearing wall with a concrete wall. This became necessary after
reconstruction of the existing building for proper connecting the old and new
built parts. After that, along the entire length of reinforced concrete bearing
wall long-span ribs merged the old and new spaces were arranged. Most important,
it enabled the making of communication channels, which could not be done in the
brick wall. Fig. 2, Ref. 2.
Auth.
13.Ñ8.16. Concept of future concrete and
its realization prospects. /M. Turdzeladze, L. Loladze/. Building. – 2013. – # 2(29). – pp. 98-102. – geo.; abs.: geo.
The article considers
the key trends for realization of a new generation concrete concept. The main focus is made on concrete
modification due high-tech, cost-effective and more comprehensive materials.
The prospects of the high-performance concrete production using local resources
and industrial waste are shown. Ref. 5.
Auth.
13.Ñ8.17. Basics of computation of wooden
structures having toothed metal plates by application of the computer program
APM WORD. /G. Kavtaria/. Building. – 2013. – # 2(29). – pp. 108-113. – eng.; abs.: geo., eng.
The article considers
the succession of computation of the strength of wooden structures and the
development of a geometric model of the structure by application of the APM
WORD computer program. Fig. 12, Tab. 1, Ref. 3.
Auth.
13.Ñ8.18. Review and classification of
pneumatic structures. /D.
Pirkulashvili/. Building. – 2013 – # 2(29). – pp. 114-116. – geo.; abs.: geo., eng.
This article provides
an overview of pneumatic structures and classification of them. Described are
all the common forms of these structures, the general characteristics and the
application area. Tab. 1, ref. 2.
Auth.
13.Ñ8.19. A simplified linear calculation
method of a skeleton construction with seismic insulation. /L. Kakhiani, I. Saladze/. Building. – 2013. – # 2(29). – pp. 124-128. – geo.; abs.: geo., eng.
The article considers
a seismic insulation system located in the foundation of a skeleton
construction, its calculation methods and design. Fig. 2, ref. 5.
Auth.
13.Ñ8.20. The dynamics of massive
foundations. /T. Batsikadze, N.
Murgulia, J. Nizharadze/. Building.–2013.– # 2(29). – pp. 146-150. – geo.; abs.: geo.
The work deals with
oscillation of a massive foundation given the effect of inertness of the elastic support/foundation. The model of the
base is chosen as a semicircle described by the approximate differential
equation. The elastic constants of this differential equation were chosen in
such mode that the results are as close as possible to the results of the
obtained solution of the more exact equation. Fig. 3, ref. 3.
Auth.
13.Ñ8.21. The effect of elastic inert
foundation on the structure seismicity. /N. Murgulia, L. Sambakhidze, L. Kristesiashvili, E. Kristesiashvili/. Building. – 2013. – # 2(29). – pp. 151-154. – geo.; abs.: geo., eng.
The effect of
combined inert soil foundation (Vlasov-Leontiev) on the dynamic characteristics
of the frame structures is considered in the article. The calculation of
seismicity is carried out by taking into account different categories and
specified parameters of the soil. Ref. 4.
Auth.
13.Ñ8.22. Influence of elastic
inertial soil on the structure seicmicity. /N. Murgulia, L. Sambakhidze, L.
Kristesiashvili, E. Kristesiashvili/. Building. – 2013. – # 2(29). – pp. 155-158. – geo.; abs.: geo., eng.
Influence of combined inertial soil on the dynamic characteristics of
the frame structures is considered in the article. Calculation of seismicity is
carried out by taking into account different categories and specified
parametres of the soil. Fig.3, Tab. 1, Ref. 5.
Auth.
13.Ñ8.23.
Analysis
of building’s operational conditions under limited development conditions. /K. Korkia/. Building. – 2013. – # 2(29). – pp. 163-167. – Geo.; Abs.: Geo., Eng.
The work considers
the impacts of development of adjacent architectural heritage-listed buildings
under limited urban development conditions that served as causes of
deformations developed in the foundations and wall settings. Fig. 2, Ref. 5.
Auth.
13.Ñ8.24. Architects
professional ethics issues in Georgia. /D. Abuladze/. Building. – 2013. – # 2(29). – pp. 168-171. – geo.; abs.: geo., eng.
The article considers the issues of
architects professional ethics and its importance in the independent
architectural activity. The regulations of ethics and the necessity of their
universal recognition and training in them at any stage of education are
grounded. Ref. 6.
Auth.
13.Ñ8.25. 35 Years of the Enguri arch dam. /G. Gabrichidze/. Bulletin of the Georgian National
Academy of Science. – 2013. – Vol. 7. – # 1. – pp.
55-58. –
eng.; abs: eng., geo.
The design of Enguri arch dam is recognized to
be a striking example of engineering to date. The height of the dam is 271 m, the
length of crest is 700 m. 1.1 billion tons of water is accumulated in the
reservoir of the dam. For 35-years of service of Enguri hydrosystem, the
programs of its rehabilitation were accomplished several times. Unfortunately,
some problems planned in the program of rehabilitation were not studied at all.
In particular, the assessment of the behaviour of the arch dam at strong
seismic loading possible in the region was not made. The program of responding
to the emergency situation created at possible break of the dam was not developed.
These problems were considered to be very important and were discussed at the meetings held in 2004 within the
above-mentioned program of renovation. Later they were emphasized in my
reviewing paper. Some additional commentaries to the above-mentioned report are
presented in the paper. Ref. 3.
Auth.
13.Ñ8.26. Assessing the tunnel construction technical level. /R. Mzhavanadze/.
Mining Journal. – 2013. – # 1(30). – pp. 19-21. – geo.; abs.: rus., eng.
A
model to assess the technical level (TL) of the tunnel construction process is
considered on the basis of an integral criterion taking into account the
possible indices of this technology (labor-intensiveness of works, inputs of
manual labor and time on a production unit) stipulated by using the appropriate
technological decisions. On the basis of an analysis of the tunnel construction
process flowsheet development, taking into account the available experience of
building complex criteria, a coefficient of the technological level of
preparatory mining operations has been elaborated. Fig. 1, Ref. 3.
Auth.
13.Ñ8.27. Investigation of the
possibilities for reinforcement of building structures with textiles from
untwisted yarn. /T. Moseshvili, N. Meparishvili/.
GEN. – 2013. – # 3. – pp. 103-105. – rus.; abs.: eng.
The article deals
with the application of textile reinforcement of various types to concrete
building structures. The advantages of the textile reinforcement in light and
thin structures over the metallic one are demonstrated. The structure of knitted
fabrics from untwisted yarn and the theoretical aspects of their use as
reinforcement in concrete structures are discussed. Fig. 2, Ref. 3.
Auth.
C9. Agriculture and Forestry. Fishery
13.Ñ9.1.
Feasibility of obtaining non-traditional fodder for cattle-raising from
mulberry leaf coarsened in autumn (sprouts and shoots) and its economic efficiency. /G. Nikoleishvili, A. Chagelishvili, T.
Dalalishvili/. Agrarian-economic Science
and Technologies. – 2014. – # 1. – pp. 51-56. – eng.; abs.: geo., eng.
Coarse autumn leaves (sprouts and shoots gathered in autumn) of the
recommended mulberry varieties by their nutritive component composition have
great advantage over other hardwood trees and are successfully used as fodder
in cattle raising. Thoroughly dried mulberry leaf contains raw protein 15.72%,
raw fat 7.41%, raw cellulose 15.4%, nitrogen-free compounds - 47.93% and ash
-13.80%. It should be stated that application of ferments capable to degrade
cellulose enables us to use sprouts and shoots as fodder for ruminant and
non-ruminant animals. In Georgia, through perfection of the technologies of
obtaining non-traditional fodder from coarse mulberry leaf gathered in late
autumn will significantly speed up the restoration of nutritive base of
sericulture and will maximally increase production of cheap non-traditional
fodder. Ref. 3.
Auth.
13.Ñ9.2. Georgian sericulture has no
future without introduction of new technologies. /G. Nikoleishvili, E. Shapakidze/.
Agrarian-economic Science and Technologies. – 2013. – # 4. – pp. 42-56. – geo.; abs.: geo., eng.
Technology
and techniques of technological processes in silk production, through which it
is possible to revive local sericulture, are discussed in this paper. Silkworm
production sheets have been developed. A stationary
installation for rearing silkworms simultaneously with the removal of litter
outside the cocoonery has been designed; several modules of the design have
been fabricated and introduced in farms of Terjola district. Fig. 10, Tab. 1,
Ref. 5.
Auth.
13.Ñ9.3. Some bio-ecological features of
olive-tree under conditions of Kutaisi. /R. Kiladze, E.
Gubeladze/. Goni. – 2014. – # 1. – pp. 6-7. – eng.; abs.: geo., eng.
The prospects of
planting olive-trees in Georgia, in particular in Kutaisi, given their bio-ecological
properties, are discussed. It is mentioned that under Kutaisi conditions the
olive tree buds intensively grow in spring, slowing down in summer. Strong
winds and abundant precipitation interfere with the pollination and
reproduction process. Therefore, the olive-trees are recommended to generally
cultivate for decorative purposes in parks at any time of the year. Ref. 2.
Auth.
13.Ñ9.4.
Problems and prospects of the tea production development. /V. Modebadze/. Law and Economics. – 2013. – # 4. – pp. 83 –
89. – geo.; abs.: geo., eng., fren.
This article analyzes problems and perspectives of the development of tea production
in Georgia. The crisis in
the field of tea industry is caused by a great number of specific factors, the analysis of which is vital for our country. Tea production is the field that can solve a
great number of social problems and play a decisive role in reducing economic
crisis. Fig. 2, Tab. 4, Ref. 7.
Auth.
13.Ñ9.5. Peculiarities of inheritance of traits in hybrids of the second
generation obtained by crossing Georgian endemic species and aboriginal
varieties of wheat. /P. Naskidashvili, I.
Naskidashvili, M. Naskidashvili, T. Loladze, Q. Mchedlishvili, N. Merabishvili,
N. Gakharia/. Bulletin
of the Georgian National Academy of Science. – 2013. – Vol. 7. – # 1. – pp.
93-99. – eng.; abs: eng., geo.
The present paper shows that in plants
surviving from lethal genetic phenomena (effect of lethal genes) the inheritance
of dominant morphological traits of paternal plants is of monogenic nature
(single gene inheritance) and the obtained segregation corresponds to
theoretically expected one at the following ratio 3(dominant):1(recessive). It
was established that early heading (early ear formation) time dominates in the
second generation, while in hybrids obtained with participation of endemic
species heading time characteristic of endemic species dominates. Resistance to
yellow and brown rust dominates in plants of the second generation obtained
with participation of endemic species. It is also shown that inheritance of
plant height in plants segregated in the second generation is controlled by two
genes – tallness is a dominant trait and the obtained segregation corresponds
to theoretically expected one: 13(tall-stemmed):3(short-stemmed) or
15(tall-stemmed):1(short-stemmed). Diversity of biotypes is segregated in
hybrid populations of the second generation and the peculiarities of
inheritance of ear spike length, number of spikelets developed on the spike,
number of grains in the spike, weight of a single spike and 1000 grains have
been established in these plants. Tab. 2, Ref. 10.
Auth.
13.Ñ9.6. Distribution of different varieties of vine with account of global
warming on the territory of Georgia. /G. Meladze, M. Meladze/. Bulletin of the Georgian National Academy of Science. – 2013. –
Vol. 7. – # 1. – pp. 105-109. – eng.; abs: eng., geo.
Climate change is one of the most important
global problems. Atmosphere’s self-cleaning capacity cannot maintain ecological
balance of the climatic system due to strong anthropogenic loadings. Analysis
of the global temperature regime confirmed that the climate changes sharply and
tends to global warming. Tendency of global warming was observed on the
territory of Georgia as well. Increase of the temperature in Eastern and
Western Georgia is 0.4 and 0.2°C, respectively. It is possible that it will
reach 1-2°C by 2030-2050. At the increase of temperature by 2 and 1°C active
temperature sums (above 10°C) increase by 440-480°C and 220-250°C in Eastern
and Western Georgia. An agro-climatic map is compiled for vertical zonal
distribution of different kinds of vine based on the above-mentioned data.
Three agroecological zones are marked out in the map. Sums of increase and
decrease (in %) of atmospheric precipitation (mm) are taken into consideration
according to vine distribution areas. By the scenario worked out at the
increase of temperature by 1°C the duration of the vegetation period (day)
increases and amounts to 12 days on average, and at the temperature increase by
2°C the duration amounts to 20 days. An extended vegetation period has positive
effect on changes of terms of agrotechnical measures. Provision by temperature
sums needed for complete ripening of grapes in the vegetation period is
specified according to distribution zones of late vine varieties. By the
database in Akhmeta (Eastern Georgia), the temperature sum is provided 8 times
per 10 years, in Keda (Western Georgia) – 9 times per 10 years. According to
the scenario it is supplied at the increase by 2 and 1°C each year. Tab. 1,
Ref. 10.
Auth.
13.Ñ9.7. Land recording issues.
/N. Turabelidze,
L. Darchiashvili/. Mining Journal. – 2013. – # 1(30). – pp. 113-115. – geo.; abs.: rus.,
eng.
The
article deals with the history of land recording development in Georgia,
starting from 1930s to these days. Considered are the land recording techniques
and methods, as well as the institutional measures to be taken for improving
the situation in this area. Ref. 3.
Auth.
13.Ñ9.8. Ways of improving the agriculture land utilization
efficiency. /L. Darchiashvili/. Mining Journal. –
2013. – # 2(31). – pp. 54-55. – geo.; abs.: rus., eng.
The
article deals with agricultural land-related problems conditioned by the
improper conduct of agricultural reform, as a result of which the functioning
of the mechanisms regulating rural community relations and comprehensive land
control failed. The emphasis is made on the establishment of an insurance
system implying the protection of incomes of those engaged in farming from the
negative effects of natural, biological and economic factors. The promising
techniques and methods of improvement lands resources at national and regional
level are proposed and main directions of further development of agriculture
are identified; also considered are the institutional measures to be taken and
the role of the State in achieving the above goals. Ref. 3.
Auth.
13.Ñ9.9. Study
of some properties of blue-green alga Spirulina platensis. /N. Kuchava/.
Nano Studies. – 2013. – # 7. – pp. 185-192. – geo.
Some properties of one of the interesting blue-green
algae in modern biotechnology, Spirulina platensis, in particular, the ability
of accumulation of some biogenic and toxic chemical elements from the nutrient medium
in the process of cellular growth, as well as the content of copper, manganese, zinc, magnesium, sodium in
lyophilized Spirulina platensis biomass have been studied. The ability of
Spirulina platensis to form silver and gold nanoparticles has been shortly
considered as well. Tab. 4, Ref. 18.
Auth.
13.Ñ9.10. Interaction of
carbon nanotubes with mineral nutrients for the promotion of growth of tomato
seedlings. /D. Tiwari, N. Dasgupta–Schubert, L.
Villasenor, Dh. Tripathi, J. Villegas/. Nano
Studies. – 2013. – #
7. – pp.
87-96.
– eng.
The study of the effects of nanoparticles, specifically
carbon nanotubes (CNTs), in plant science is a newly emerging area of
research. Compared to plant cell walls and membranes, the penetration of CNTs into seeds is expected to be
difficult due to the significantly thick seed coat. This
study shows the effect of pristine multi-walled CNTs (MWCNT) and ultrasonically
dispersed (de-aggregated) MWCNT (dMWCNT) on the germination and growth of
tomato (Solanum lycopersicum) seeds cultivated in 1MS agar gel media treated
with different concentrations of MWCNT (0–60µg/ml) and dMWCNT (0–10µg/ml) and
observed for periods of growth spanning 7 to 27 days. Growth indices at all
stages of growth were improved by the CNT. The dMWCNT showed a greater effect
than the MWCNT indicating that the degree of de-aggregation of the CNTs is an
important factor in the effectiveness of the CNT–plant interaction. The
concentrations of the elemental macro and micro nutrients in the seedlings were
analyzed by polarized EDXRF spectrometry (pEDXRF). In the range of
concentrations used, the lower concentrations for the MWCNTs, and the higher
concentrations for the dMWCNTs, generally appeared to benefit the acquisition
of mineral nutrients by the seedling indicating the dual effects of
aggregation and possible toxicity at higher MWCNT concentrations. FTIR
spectrometry of the seedling did not seem to indicate a significant presence
of the CNT within the plant tissue. Fig. 5, Tab. 2, Ref.
14.
Auth.
13.Ñ9.11. Accumulation of
cadmium by basil (Ocimum
basilicum), coriander (Coriandrum
sativum) and saffron (Crocus
sativus L) from
cadmium-enriched soil. /A. Rcheulishvili, O. Rcheulishvili,
N. Rcheulishvili, E.
Ginturi, L. Tugushi, E. Gelagutashvili/.
Nano Studies. – 2013. – #
8. – pp.
2013-216.
– geo.
Effect of
cadmium on basil, coriander and saffron and their components in the
process of growth were studied, when soil was enriched by cadmium. In general, accumulation of cadmium
was observed
in roots of these agricultures. Fig. 1, Ref. 11.
Auth.
C10. Water Industry. Melioration
13.Ñ10.1. The uranium isotope evaluation method of radiological conditions and
water balance corroborative features of the river Chu basin. /M. Burkitbaev, D. Mamatkanov, T. Tuzova, B. Uralbekov/. Collected Papers of Institute of Water
Management. – 2013. – # 68. – pp. 19 -23. – rus.; abs.: geo., eng., rus.
Flow-in balance components of the Chu River basin are specified by the even uranium isotope Ratio in waters. 234U/238U ratio
shows stability over time (1964-2011 years) in the
parts with no noticeable inflow. The possibility of using of the isotope
dilution method to access surface and underground flows in different parts of
the river basin is shown. An increase of the total uranium content in waters
along the river downstream is found, which is associated with uranium-enriched
underground waters in the areas with uranium anomaly occurrences. Fig. 1, Tab.
1, Ref. 11.
Auth.
13.Ñ10.2. The main characteristics of the river.
/I. Gabrichidze,
Z. Gedenidze/. Collected Papers
of Institute of Water Management. – 2013. – # 68. – pp. 24-26. – geo.; abs.: geo., eng., rus.
The works proposes using of a multi-trace
scale built in a water gauge to calculate the main river characteristics
(depth, velocity, flow), obtainable as a result of a theoretical and experimental
study. Also, a new design of a hydrometrical rotator having definite advantages
over the existing device is recommended. Fig.3, Ref.
3.
Auth.
13.Ñ10.3. Some comments on the project of
Shuakhevi HPP construction and operation at the Ajaristskali River. /T. Gvelesiani/. Collected
Papers of Institute of Water Management.
– 2013.
– # 68. – pp. 41-47.
– geo.;
abs.: geo., eng., rus.
The
brief characteristics of the project (report of the environmental impact
assessment) relative to construction and operation of Shuakhevi HPP in Ajara
(Georgia) at the Ajaristskali river developed by the "Ajaristskali
Georgia" Ltd and the Norwegian Company "Clean Energy Invest"
are presented. The planned hydraulic power system capacity is 400 Mw. At
the start stage two concrete dams (Didajara and Skhalta dams) having the height
39 m and 22 m will be constructed. The author of the article as an
independent expert of the Ministry of Environment Protection of Georgia in his
comments deals with the issue of the environmental impact assessment relative
to the risk of dams break. Fig. 2, Ref. 4.
Auth.
13.Ñ10.4. Specification of a free outlet of Lake Sevan depending on its level, the
forecast and vulnerability assessment under the influence of climate changes. /L. Vardanyan/. Collected Papers of Institute of Water Management. – 2013. – # 68. – pp. 72-77. – rus.; abs.: geo.,
eng., rus.
Researches show that
the size of a free outlet of Lake Sevan depends on its level and is
significantly varies from year to year. The article also presents the methods
of determining the actual free outlet of the lake and assessing its level. The
specified sizes of underground runoff that depend on the level are given. A diagram of the dependence of the underground water
discharge on the water level and the evaluation data of the free outlet, which
also depend on the water level, are presented. Fig. 4, Tab. 3, Ref. 13.
Auth.
13.Ñ10.5. Performance standards
of the mechanic part and electrical machines of reclamation systems. /M. Vartanov/. Collected Papers of Institute of Water
Management. – 2013. – # 68. – pp. 78-83. – geo.; abs.: geo.,
eng., rus.
The article is devoted to the improvement of
market relations
in the field
of land reclamation and water management. The problem of planning
the operational
costs of
maintaining drainage
systems, including costs
associated with
the operation of mechanical
and electrical
parts. Are
normal
scheduled maintenance,
as well as the
value of
the turnaround time of reclamation funds that have a large enough
physical deterioration.
Discusses some
rules
whose
application in practice,
corporate
planning operating
costs, allow
sufficient
to accurately
determine the
size and timing of
repair work and,
ultimately, to
ensure the normal content
of
the most
important elements of
water management systems,
such as pumping
stations, panels, electrical
equipment. Tab. 3, Ref. 4.
Auth.
13.Ñ10.6. Determination
of the coefficients of horizontal exchange in Baku Bay on the basis of
semi-empirical theory of turbulence. /T. Tatarayev, N.
Hasanova, B. Agarzayeva, A. Veliyev, S. Askerova/. Collected Papers of Institute of Water Management. – 2013. – # 68. – pp. 84-88. – rus.; abs.: geo.,
eng., rus.
This
article is dedicated to an analysis of the processes of turbulent exchange in
the Baku Bay on the basis of long-term observations of currents. To evaluate
the characteristics of exchange, the basics of semi-empirical turbulence theory
were used. The evaluated coefficients of turbulent exchange and their
dependences on the averaging period were determined. Also, "ellipses
sharing" and their variability on the scale of the phenomenon, as well as
the dependence of the mesoturbulent energy on the averaged period of turbulent
fluctuations were determined. Fig. 3, Tab. 3, Ref. 6.
Auth.
13.Ñ10.7. Research of Garasu (Darayurd) watershed water balance with the help of
GIS. /F. Imanov, H. Aranchi/. Collected Papers of Institute of Water
Management. – 2013. – # 68. – pp. 94-102. – eng.; abs.: geo.,
eng., rus
The main water
balance parameters: precipitation, evaporation and river flow were analyzed.
The runoff depth was calculated by a rational method that is widely used in
western countries. The GIS technique was used in mapping the water balance
elements of the given water body. Fig. 11, Tab. 3, Ref. 10.
Auth.
13.Ñ10.8. Vulnerability assessment of a water reservoir system. /I. Iordanishvili, K. Iordanishvili, E. Khosroshvil/. Collected Papers of Institute of Water
Management. – 2013. – # 68. – pp. 103-107. – geo.; abs.: geo.,
eng., rus.
The article discusses
the issues on the intensity and risk assessment of water reservoir systems. The
actual normal (invulnerable) functional period of water reservoirs with the
consideration of load magnitude reliability, jeopardy and phosphorus is
determined. The necessity of water protective measures conducting is
substantiated. Tab. 3, Ref. 7.
Auth.
13.Ñ10.9. The highest molecular water capacity as an important physical constant
of the grounds. /L. Itriashvili, E. Khosroshvili, M. Shavlakadze, L.
Maisaia, Kh. Kiknadze/. Collected
Papers of Institute of Water Management. – 2013. – #
68. – pp. 114-118. – rus.; abs.: geo.,
eng., rus.
The joining quality of water in the grounds
with the consideration of energy is discussed. The highest molecular water capacity
as a critical feature of changes in soil properties is determined. Fig. 2, Tab.
7, Ref. 5.
Auth.
13.Ñ10.10. The water cycle and extreme events. /L. Itriashvili, Q. Dadiani, N. Nibladze/. Collected Papers of
Institute of Water Management. – 2013. – # 68. – pp. 119-121. – rus.; abs.: geo., eng., rus.
This paper shows that use of standard processing
of hydrological time series of distributions from the exponential family
presupposes uniform stability of the hydrological system over the entire range
of its parameters, without taking into account the specificity of
hydro-physical processes in the catchment area, which in definite conditions
may lead to extreme phenomena. It is concluded that descriptions of multiyear
fluctuations of river runoff by linear equations cannot be satisfactory from
the physical point of view, as even small non-linear ties in a dynamic system
substantially alter the tails of distributions, and hence the assessment of the
probability of catastrophes. Ref. 8.
Auth.
13.Ñ10.11. Computer simulation of processes and optimal management capabilities. /R. Kiladze,
V. Shurghaia, L. Kekelishvili/.
Collected Papers of Institute of Water Management. – 2013. – # 68. – pp. 122-125. – geo.; abs.: geo.,
eng., rus.
The article discusses
the optimal management capabilities of surface gravity irrigation systems
through mathematical modeling and computer simulating of irrigation. Ref. 6.
Auth.
13.Ñ10.12. Forecasting the conditions of movement of
adhesive mudflow on
the carrying-out
cone. /E. Kukhalashvili, K. Bziava, I.
Inashvili/. Collected Papers of
Institute of Water Management. – 2013. – # 68. – pp. 126-127. – geo.; abs.: geo., eng., rus.
The mudflows, along
with typical processes at natural disasters, have the features of destructive
influences that are often accompanied by considerable loss of property, and
also loss of human life. Assessment of the conditions of movement of adhesive
mudflow on the carrying-out cone gets special importance, because in general,
the settlements and considerable part of national economy are located within
this area. According to this, the carrying-out cones is the place for attentive
studying, where it is especially the subject of destructive influences by
mudflow. In the given article the calculated dependences are received by means of which, forecasting the
movement of the adhesive mudflow on the carrying-out cones, and also selection
of the optimum options of construction schemes is possible. Ref. 4.
Auth.
13.Ñ10.13. Some problems of water resources supply and demand. /A. Markosyan, T. Martirosyan/. Collected Papers of Institute of Water Management. – 2013. – # 68. – pp. 138-144. – rus.; abs.: geo., eng., rus.
The article deals
with the general content of the problem of water resources supply and demand
management. Also examined is the necessity of conducting a complex research of
the quantitative and qualitative features of water. It is concluded that the
current problems of the inefficient water resources management practices in
Armenia result from the inefficient tariff system. Fig. 7, Ref. 4.
Auth.
13.Ñ10.14. Problems of revaluation and inventory of incomplete non-current material
assets and fixed assets of the organization providing services in the water
supply and water disposal sphere. /M. Mkrtumyan, G. Grigoryan/. Collected Papers of Institute of Water Management. – 2013. – # 68. – pp. 145-149. – rus.; abs.: geo., eng., rus
The article states
that the financial improvement and effective management of the sphere of water
management requires restructuring of debts and discharge of past burdens. Mentioned
are the amendments and addenda made in the Armenian legislation concerning tax
privileges and the Armenian government’s regulations in the water management
sphere. Tab. 4, Ref. 7.
Auth.
13.Ñ10.15. Sediment-loaded mudflow uneven traffic flow with variable numerical of
the flow. /O. Natishvili, V. Tevzadze, Z. Charbadze, N. Nibladze/. Collected Papers of Institute of Water Management. – 2013. – # 68. – pp. 153-156. – rus.; abs.: geo., eng., rus.
The reference image
of the free surface curve for hyper concentrated debris-flow is proposed, in
which the sustainability of mudflow toward erosion hub as well as its motion
and dynamics in water plumbing are taken into consideration. Ref. 3.
Auth.
13.Ñ10.16. Viscous liquid’s constant motion in the open cylindrical beds. /A. Sarukhanyan, H.
Tokmajyan, K. Ohanyan/. Collected Papers of Institute of Water Management. – 2013. – # 68. – pp. 160-164. – eng.; abs.: geo., eng., rus.
Steady-state flow of
a viscous fluid in open canals is laminar, when a velocity of the flow is low
or when viscosity is high. In case of a steady-state flow in cylindrical
canals, particles of fluid travel only longitudinally causing unidirectional
flow of the fluid. In open canals the fluid is under influence of the gravity
force of which the component directed along the motion becomes the reason of
the flow. Navier-Stokes equations were set up and for their integration
boundary conditions were formulated according to which the flow rate at the
fixed wall and the rate gradient on the free surface in direction perpendicular
to the flow is equal to zero. The viscous fluid flow regularities in the
following two cases of cylindrical canals are studied. Steady-state flow of the
viscous fluid in open canals of semicircular cross-section is examined. A
boundary problem has been defined, of which integration resulted in the
velocity distribution function, maximum velocity, flow through effective
cross-section, average velocity, distribution function of shearing stresses.
The latter developed on the fixed wall enable to determine design formula for
calculation of energy losses and an equation of uniform flow in an open canal
has been derived. Steady-state flow of the viscous fluid in open canals of
semielliptical cross-section is examined. A boundary problem has been
formulated of which boundary conditions have been set up. Integration of the
boundary problem was performed, velocity and shearing stresses distribution
functions was obtained, average velocity at effective cross-section and the
flow passing through it have been determined. The shear stress on the fixed
wall was determined which enabled to determine design formula for calculation
of energy losses according to which equation of uniform flow in an open
elliptic canal has been derived. The obtained solutions enable to determine
circular and elliptic open canals dimensions in case of the fluid steady-state
flow. Fig. 7, Ref. 4.
Auth.
13.Ñ10.17. The hydrotechnical classification of Georgian rivers according to their
beds charachteristics. /P. Sichinava, Z.
Lobjanidze, Sh. Kupreishvili/.
Collected Papers of Institute of Water Management. – 2013. – #
68. – pp. 170-174. – geo.; abs.: geo., eng., rus.
The
classification of Georgian rivers according to the mian types of processes
taking place in river beds, forms of river drifts, and the hydraulic and
stability characteristics is made. The state of the areas adoining the river
beds is described. Tab. 1, Ref. 6.
Auth.
13.Ñ10.18. Selection of filtering drift for wetland grounds of Kolkheti Lowland. /V. Shurghaia, I. Zaqaidze, L. Kekelishvili/. Collected Papers of Institute of Water Management. – 2013. – # 68. – pp. 194-199. – geo.; abs.: geo., eng., rus.
The article considers
the issues of selection of a system of drainage given the mechanical
composition of the soils in the Kolkheti Lowland wetlands. Fig. 3, Tab.
1, Ref. 4.
Auth.
13.Ñ10.19. A generalized method of assessing discharge for Newtonian and Non-Newtonian fluids
upon uniform motion of the flow. /O. Natishvili/. Bulletin
of the Georgian National Academy of Science. – 2013. – Vol. 7. – # 2. – pp. 124-129. – eng.; abs.: eng., geo.
To characterize a uniform free-flow motion for
the laminar flow conditions, a generalized method of assessing the fluid flow
for both the Newtonian and non-Newtonian fluids is proposed. Fig. 2, Ref. 5.
Auth.
13.Ñ10.20. On the
qualitative indices of water-supply of Georgia’s settlements. /N. Kitiashvili/. Mining Journal.–2013.– # 1(30). – pp. 78-81. – geo.; abs.: rus., eng.
The
results of a long-term monitoring of the quality of water supplied to different
populated settlements in Georgia by means of water intake facilities are
considered; the negative factors observable as a result of water pollution by
organic and nonorganic toxicants of ground waters used in water-supply are
given; the maps of quantitative indices of distribution of separate toxicants
in ground waters are compiled and the indices are comprised with the Maximum
Admissible Concentration (MAC), fixed by standards. Fig. 3,
Ref. 7.
Auth.
13.Ñ10.21. The overall ecological status of
the water quality of the Mashavera, the Khrami and the Debeda Rivers. /E. Bakradze, G. Kuchava, M. Arabidze, N. Buachidze, I. Kordzaia, L.
Papachashvili/. GEN. – 2013. – # 3. – pp. 38-40. – geo.; abs.: eng.
The article deals with the hydrobiological assessment of the Mashavera,
Khrami and Debeda Rivers. The ecological status was assessed byte EQR-mean. Depending on the hydrobiological assessment, the following
statuses were assigned: the Mashavera-Kianeti
point- “not satisfactory», the Mashavera–Khidiskuri and the Debeda–Sadakhlo points
-“bad”, and the Khrami-Khramhesi
and the Mashavera-Didi Dmanisi points
- ”good”.
Tab. 2, Ref. 3.
Auth.
C11. Foreign and Domestic Trade. Tourism
13.C11.1. Restoration of the Argonauts’ route given the riverbed stabilization on the River Rioni. /G. Gavardashvili/. Collected
Papers of Institute of Water Management. – 2013. – # 68. – pp. 27-32. – eng.; abs.: geo.,
eng., rus.
The two legends about
Georgia associated with the Prometheus (Tskaltubo) Cavern and Argonauts are
still alive in the world. In order to develop tourism in Georgia, the paper proposes
a practical implementation of the above legends. The mentioned proposal is to
be implemented with the stabilization of River Rioni bed, which will
concurrently increase the reliability of protection of local population and
the region’s landscape from natural disasters. The project foresees the
restoration of tourist routes and river transports on the Rioni, which includes
a complex of measures; its realization will also contribute to the proper
operation of the Poti Port, to the development and protection of the City of
Poti and its coast line in the Black Sea waters, to the implementation of the
freight and passenger shipping on the Kutaisi-Poti area of the River Rioni, and
to the effective and reliable protection of agricultural lands and settlements
from floods. Fig.
3, Ref. 3.
Auth.
13.C11.2. The role of air transport
in the development of tourist industry. /Y. Sukhitashvili, M. Sukhitashvili, A. Mamedov/. Air Transport. – 2013. – # 1(8). – pp. 88-99. – rus.; abs.: geo., eng., rus.
The subject of
research in the article is to determine the part of air transport in the
development of tourist industry, the reasons of popularity of air
transportation in the organization of tourist travels. Based on an analysis of
the tourism environment, the main trends in the world tourism and its relationship
with transport are given. Ref. 6.
Auth.
13.C11.3. Human
resource planning for tourism. /N. Grdzelishvili/. Law and Economics. – 2013. – # 4. – pp.70 – 76. – geo.; abs.: geo., eng.,
fren.
This work notes that for the Development of the tourism
sector
and its
effective management
it is extremely
important to train tourism
sector employees. Human resource planning is a systematic process
for the employment of personnel in the appropriate areas. Of particular importance for the
development of quality tourism is the employment of qualified personnel in
service sector. During
human resource planning it is necessary to consider all the specialty varieties
of tourism. This
article analyses stages in human resources planning. It is stated that
Professional development of personnel is not possible without professional
training. Professional development has a positive effect on the employees. A
specialist acquires new knowledge and skills through professional training
which makes him more competitive in the labor market. It is stated that, if
tourism will be planned, developed and will be managed on the principles of
social responsibility, then it can bring different socio-cultural benefits. It
is mentioned that if tourism is properly planned in the future and tourism management
is based on the principles of social responsibility, it will certainly bring forth
different socio-cultural benefits. Fig. 1, Tab. 1, Ref. 8.
Auth.
13.C11.4. Investments - the basis
for turism revival in Georgia. /N. Grdzelishvili/. Law and Economics.–2013.– #
4. – pp.77-82. – geo.; abs.: geo., eng., fren.
The importance of creating a favorable investment
climate for accelerated development of tourism in Georgia is outlined. The application of a selective approch to the attraction of foreign
investments is regarded as a necessary precondition. Also mentioned is the necessity of interesting Georgian businessmen
living abroad for the purpose.
Fig 3, Ref. 6.
Auth.
13.C11.5. Religious tourism - major factor
contributing to the integration processes. /N. Grdzelishvili/. Low and Economics. – 2013. – # 4. – pp. 90-99. – geo.; abs.: geo., eng.,
fren.
This work notes that under present conditions, tourism has become the world's most powerful tool
of economic development, which has a major influence on the political, economic, social and cultural ties among countries. It is said that
nowadays religious
tourism, in tourist
activities, is one of the
most actively developing directions. A strong interest towards religious tourism makes it an important factor
contributing to social and political stability. According to
the estimates of the World Tourism
Organization (UNWTO) religious (General) tourism occupies the first place among the most promising
directions of tourism. Experts assess religious tourism as the most promising direction
for 21st century. This work discusses the development of religious tourism in
Georgia. It describes different types of religious tourism,
which can become the basis of cooperation between Georgia and Russia and
between Georgian and Abkhazian people. Tourism development requires investment, key to the attraction
of investment is the characteristics of region's political climate, in particular, a healthy macroeconomic policies, well-defined property rights and the efficient
functioning of the financial and banking sectors. Regional integration can contribute to an increase in the volume of investments, if it substantially enhances credibility towards politics and expands markets, but this process should be congruent with the general policy. This work notes that the development of tourism
in Georgia is one of an essential factors for regional stability. Ref. 8.
Auth.
13.C11.6. Concerning
the estimation of tourism competiveness (a case of Tbilisi city). /A. Sharashenidze/. Ekonomisti. – 2013. – # 1. – pp. 68-73. – geo.; abs.:
eng., geo., rus.
Competitiveness indicators are analyzed; Tbilisi tourism potential is
revealed based on data analysis; the factors influencing the tourism potential
are characterized and the ways of its utilization are offered; the potential
competitive innovations are analyzed according to the types of products and
their role in diversifying the city tourism potential is assessed. Fig. 1, Tab.
1.
Auth.
13.C11.7. Reducing fluctuations in tourism
center development on the basis of balanced cycles. /P. Chaganava/. Ekonomisti. – 2013. – # 2. – pp. 52-80. – geo.; abs.:
eng., geo., rus.
The article gives a
life cycle analysis of a tourist center, which covers the dynamics and
interdependence of private investments and governmental expenditure in tourism.
As research results indicate, the coincidence of touristic, private investment
and government expenditure cycles leads to sharp fluctuations in the economic
development of a tourism center. The article suggests a mechanism of reducing
the fluctuation of economic development on the basis of balancing the touristic
and private investment expenditure cycles by government expenditure cycle and
describes a number of instruments for this purpose. Fig. 9, Ref. 25.
Auth.
13.C11.8.
Tourist product perception. /N.
Jerenashvili/. Ekonomisti. – 2013. – # 2. – pp. 108-111. – geo.; abs.: eng., geo.,
rus.
A tourist product is
created based on the customer-requested tourist services, which is a combination of different elements. The tourism product
can be perceived differently, depending on the position it holds on the travel
market. Scientists name perception as a "writing down" process, which
is conditioned by the previous human experience. Ref. 4.
Auth.
13.C11.9.
The
characteristics of the external environment of the tourist business of Georgia.
/N. Ghvedashvili/. Ekonomisti. – 2013.
– # 3. –
pp. 50-55. – eng.;
abs.: eng., geo., rus.
The main fields of
activities of tourist companies and their external environment are
interconnected and dependent on each other. External environment is a
combination of external factors and subjects of the company that has actual
influence on the condition, efficiency and perspectives of its activities. The
role of competition in the development of tourism is outlined. The
insufficient competition among Georgian tourist companies is mentioned,
especially in the so-called exotic tourism. The level of competition is much
higher in recreation tourism. The market of this service in Georgia has been
actually divided and access of new company in it is very difficult. Ref. 3.
Auth.
13.C12.1. Historical
review of Georgian transport network formation. /T. Makharashvili/. Building.–2013.– # 2(29). – pp. 86-89. – geo.; abs.: geo., eng.
It is noted that the town-building and
transport system of Georgia has developed under the effect of political, economic,
natural and climatic factors since the ancient times. Its axis long since went
through lowland areas of the country from east to west, branching up to
mountain region and along the Black Sea shore. The main settlements were built
along these routes to make a unified urbanistic system. Ref. 2.
Auth.
13.C12.2. Definition of freight train
weight standards on
Marabda-Akhalkalaki railway line. /A. Kakabadze/. Building. – 2013. – # 2(29). – pp. 103-107. – geo.; abs.: geo., eng.
The
Marabda-Akhalkalaki-Kartsakh railway line passes through complex topographic,
geological and climatic conditions. In this area are steep slopes and small
radius curves (300 m). The train weight, in addition to the locomotive power,
is limited by reduction of traction coefficient between the wheel and rail in
small radius curves. The work defines the freight train weight standard related
to the traction coefficient. It is mentioned that under severe winter
conditions the traction coefficient between the wheel and rails sharply
decreases. Therefore, the authors consider it advisable to establish the
freight train standard depending on the seasons (summer and winter). Ref. 1.
Auth.
13.C12.3. Air temperature influence at the
barometric altimeter readings. /A. Apkhaidze/. Air Transport.–2013.–# 1(8). – pp. 8-13.
– rus.; abs.: geo., eng., rus.
The
mutability of barometric altimeter methodological error of the air temperature
is considered. The study was made for Tbilisi airport area, depending on season
and flight altitude. Tab. 2, Ref. 3.
Auth.
13.C12.4. Multifuel rotary piston engines “Wankel AG”. /K. Broladze/. Air Transport. – 2013. – # 1(8). – pp. 14-34.
– rus.; abs.: geo., eng., rus.
Rotary piston engines
applied in aircraft manufactured by’ Wankel AG are described. These engines can
operate on the so-called “heavy fuel” – kerosene and diesel oil. The engine
models LOCR-407SD – one-rotor, LOCR-814 TD – two-rotor, and AR-208 DT – two-rotor with turbo charge are described. VLDE-407SDT engine is the
most interesting for aviation. In principle it is a power unit including RPE,
all peripheral systems and is ready for application at drones and remotely piloted
vehicle. Fig. 8, Tab. 1, Ref. 4.
Auth.
13.C12.5. BOEING 737 engine CFM-56 oil
system upgrade. /K. Broladze, G. Saakadze/. Air Transport. – 2013. – # 1(8).
– pp. 35-41. – rus.; abs.: geo., eng., rus.
The work aimed at
improving the engine lubrication system of Boeing 737 aircraft. The problems of
the engine oil filler cap and the ways of their handling are described. Fig. 2,
Ref. 8.
Auth.
13.C12.6. Decision-making description
model. /S. Khoshtaria, K. Bareladze, T. Khoshtaria/. Air
Transport.–2013.– # 1(8). – pp. 42-45. – eng.; abs.: geo., eng., rus.
The work analyzes a
decision-making model in ergative systems. In elaborating such models, the
parameterization requirements providing sufficient information for
decision-making should be taken into account. Ref. 4.
Auth.
13.C12.7. One of approaches to ensuring optimal dynamics of an aircraft control
system. /T. Kapanadze, J. Ebanoidze, D. Brelidze/. Air Transport. – 2013. – # 1(8). – pp. 64-69. – rus.; abs.: geo., eng., rus.
Matrix criteria of an aircraft control system’s sustainability are
developed; the sustainability condition is obtained according to the matrix
standards. As a result, an algorithm ensuring the optimal and dynamic
properties of a cohesive management system is built. Fig. 1, Ref. 4.
Auth.
13.C12.8. Electrization of clouds causes by aircraft flight. /A. Apkhaidze, M. Mamsirashvili/. Air Transport. – 2014. – # 1(9). – pp. 8-13. – rus.; abs.: geo., eng., rus.
The article considers an aircraft as a cloud generator by
electric discharges. The
produced discharge is characterized of the time of relaxation that is
commensurable with the existence of the cloud itself. Based on an analysis of a
number of assumptions associated with the discharge of atmospheric electricity
in stratus clouds, certain intervals between flying of aircrafts in clouds are
proposed. Fig. 2, Ref. 6.
Auth.
13.C12.9. Raining efficiency of ergative
systems. /S. Khoshtaria, K. Bareladze, T. Khoshtaria/. Air
Transport. – 2014. – # 1(9). – pp. 14-18. – rus.; abs.: geo., eng., rus.
The article describes
analytical approaches to typical ergative operations and formulas that
determine the probability of error-free solution of the entire operation and
algorithm, as well as the significance of availability. Ref. 2.
Auth.
13.C12.10. Paradigm of sustainable development of air companies in global competitive
environment. /L. Litvinenko, V. Novak/. Air
Transport. – 2014. – # 1(9). – pp. 34-41. – eng.; abs.: geo., eng., rus.
The existing trends on the world air market
and urgent problems of air companies are analyzed and the effective measures
for their sustainable development are identified. Fig. 6, Ref. 7.
Auth.
13.C12.11. Macro and micro factors influencing the competitiveness of air carriers. /Y. Sukhitashvili, N. Dumbadze, M. Sukhitashvili, B. Davitadze/. Air Transport. – 2014. – # 1(9). – pp. 42-53. – rus.; abs.: geo., eng., rus.
Under conditions of
the global economic crisis and acute competition, air carriers are trying to
reduce expenses and improve service quality for t heir customers. It is very
important nowadays for air companies to take into account an optimal ratio
“tariff-quality” in order to increase their competitiveness on the air market.
Ref. 6.
Auth.
13.C12.12.
Elaboration of a logistic model for determination of thermophysical parameters for
operation of the evaporator-homogenizer. /J. Iosebidze, A. Chkheidze, O. Gelashvili, O. Kiguradze, G.
Khutsishvili, G. Abramishvili. L. Zurabishvili/. GEN. – 2013. –
# 4. – pp. 40-44. – geo.; abs.: eng.
The article deals
with the elaboration of a logistic model, which enable the theoretical
determination of the values of characteristic parameters (heat transmission
coefficient, heat capacity etc.) of thermophysical processes taking place in
the course of operation of the evaporator-homogenizer. Tab. 2, Fig. 2, Ref. 5.
Auth.
13.C12.13. Improvement in the durability of motor car tribounits by
vibrostimulation of tribo synthesis of graphite-diamond surface structures. /J. Iosebidze, A. Chkheidze, D. Kupatadze,
E. Kutelia, G. Abramishvili, Kh. Mgebrishvili/. GEN. – 2013.–
# 4. – pp. 45-47. – eng.; abs.: eng.
It is shown at the
conceptual and experimental levels that in case of application of the oil
containing amorphous nano-dispersed carbon (inside the particles of which are
located the clusters of ferromagnetic iron), vibrostimulation could play the
role of a creative factor, promoting the tribosynthesis of tribologically
high-efficient secondary surface structures, including diamond nano-particles.
This will reduce the damage to tribounits caused by pitting and other kinds of
wear. Fig. 2, Ref. 4.
Auth.
13.C12.14. Study on the opportunity of
improvement of the durability of transmission units by adding the new-type
additive to automobile oils. /J. Iosebidze, I.
Padgurskas, D. Kupatadze, T. Apakidze, G. Abramishvili, L. Zurabishvili, M.
Khvedelidze/. GEN.
– 2013. – # 4. – pp. 48-51. – rus.; abs.:
eng.
The article deals
with the investigation results on the effect of new-type additives based on
amorphous nanodispersion carbon on the parameters of oil that determine the
durability of automobile transmission units. According to the obtained data,
the additive of the given type provides significant improvements in
wear-resistant, anti-scuffing and anti-pitting properties of the oil. Hence,
the obtained oil surpasses well-known commercial transmission oil sorts. Tab. 6,
Ref. 4.
Auth.
13.C12.15. Elaboration of the
model of the logistic system: “ecological compatibility of the automobile gas
diesel–properties of natural pressurized gas”. /J. Iosebidze, J. Julien, D. Aladashvili, O. Gelashvili, G.
Abramishvili, L. Zurabishvili/. GEN. – 2013. – # 4. –
pp. 52-57. – geo.; abs.: eng.
Conceptual relations between the ecological indices of the automobile
gas diesel and the characteristics of natural pressurized gas were determined.
On their basis, a logistic system was elaborated, which allows us to develop
the optimal ways for enhancement of ecological compatibility of the gas diesel.
Tab. 2, Fig. 2, Ref. 5.
Auth.
13.C13.1. The elemental composition of
teeth hard tissues depending on the state of the environment. /N. Suladze, T. Shishniashvili, V. Margvelashvili, K. Kobakhidze/.
Georgian Medical News (GMN). – 2014. – # 1(226). – pp. 7-11. – rus.; res.: geo., eng., rus.
At present, great
attention is paid to the origin of man-made micro elemental anomalies. To
monitor the state of the environment and its effects on the human body, of
great importance is the determination of the amount and distribution of various
chemical elements in the dentin and enamel of the teeth. To determine the
essential (Ca, Zn, Mn, Ni), conditionally essential (Rb, Ni, Sr) and toxic (Pb,
Hg) trace elements in the mineralized tissues of the teeth and to identify the
relationship between the elemental composition of the tooth structure and the
state of the general and dental health depending on the state of the
environment, we have examined 29 children aged 3-4 years who have carried out
analysis of hard tissue of teeth (teeth used for remote medical reasons) for
the maintenance of nine chemical elements. Children living in a relatively
environmentally favorable conditions essential value and conditionally
essential elements in the mineralized tissues of the teeth were within normal
limits, and toxic elements slightly increased limits that differ from those of
children living in environmentally disadvantaged areas. In particular, these
essential elements were significantly reduced (except for zinc), as indicators
of toxic elements - mercury and lead, increased by 12.5% and 44.5%,
respectively, which is clearly reflected on the state of dental health because
noted decompensated form of tooth decay. Thus, deviations in a state of general
and dental health of children associated with an imbalance of macro-and
microelements in the mineralized tissues of the teeth. Fig. 5, Tab. 2, Ref. 5.
Auth.
13.C13.2. Clinical manifestation and
management of intravenous mercury injection: a case report. /T. Kobidze, O. Urushadze, I. Afandiyev, G. Nemsadze, D.
Loladze/. Georgian Medical News (GMN). – 2014. – # 1(226). – pp. 11-16. – eng.; res.: geo., eng., rus.
Intentional
self-injection of metallic mercury case report is presented. A 22 year old man
with a past medical history of ethylene glycol suicidal poisoning was admitted
to an Acad. N. Kipshidze Central University Clinic in Tbilisi, four months
after deliberate intravenous injection of an unknown quantity of metallic
mercury from several thermometers into his antecubital vein. After 2 months of
asymptomatic period, the patient began to complain of pain and tremor in limbs,
fatigue and skin rash. CT scan of the thorax and the abdomen confirmed multiple
small opacities of metallic density in both lungs, liver and right kidney.
After the procedure the patient was transferred to the toxicology center in
Baku, Azerbaijan for chelation therapy. On arrival no biochemical abnormalities
in hepatic or renal function or clinical pulmonary malfunction were detected,
despite presence of slight symptoms of erethism, tremor mercuralis, knee joints
arthralgia and lower extremities weakness. Chelation therapy with intramuscular
injection of Unithiol (DMPS) was started in dose of 20 mg/ kg/ day. After one
month of chelation therapy, mercury blood concentration slowly decreased from
initially 134 microgram/L to 105 microgram/L. This case report demonstrates
mild acute toxicity following intravenous administration of unknown amounts of
elemental mercury. Because of chelation therapy can remove approximately 1 mg
of mercury per day the patient was recommended further long-term DMPS
treatments under the control blood mercury levels. It is concluded that
clinical manifestations of intravenous elemental mercury intoxication may be
delayed despite significant increase in blood mercury level. Fig. 5, Tab. 2,
Ref. 5.
Auth.
13.C13.3. J
point elevation as a predictor of premature ventricular beats. /Z. Matoshvili, Sh. Petriashvili, A. Archvadze, I. Azaladze/. Georgian Medical News (GMN). –
2014. – # 1(226). – pp. 7-11. – eng.;
res.: geo., eng., rus.
Early repolarization
pattern (ERP) is a common ECG variant, characterized by J point elevation
manifested either as terminal QRS slurring (the transition from the QRS segment
to the ST segment) or notching (a positive deflection inscribed on terminal QRS
complex) associated with concave upward ST-segment elevation and prominent T waves
in at least two contiguous leads. 36 patients were included in this
observation. There are 36 patients (19-68 years old) with early repolarization
ECG patterns. All this 36 patients were divided into two groups according to
their level of J point elevation. First group consisted of 12 patients with J
point elevation ≥0,15 mV; second group
– of 24 patients with J point elevation <0,15 mV. We make 24 h ECG holter
monitoring all this patients to evaluate absolute number of premature ventricular
beat during 24 h. Before and during this monitoring patients don’t take any
antyarrhythmic drugs. In the first group (J point elevation ≥0,15 mV) sum
of premature ventricular beats were 27432, in the second group (J point
elevation <0,15 mV) sum of premature ventricular beats were 31 896. The
results of this observational study shows that there is 1,72 fold higher number
of premature ventricular beats in first group. So, J point elevation equal or
more then 0,15mV, is more arrhythmogenic and induces premature ventricular
beats. This is principally new and very important result. Fig. 5, Tab. 2, Ref.
5.
Auth.
13.C13.4. Relationship between emotional
stress and cardiovascular events. /Mahavir Senan, A.
Petrosyan/. Georgian Medical News (GMN). – 2014. – # 1(226). – pp. 7-11. – eng.; res.: geo., eng., rus.
During last years the
relationship has been found in between sudden cardiac death and autonomic
disbalance of nervous system, which effect on baroreflector regulation of heart
rhythm. The importance of heart rate in cardiovascular prognosis can be
explained by its relationship with major pathophysiological determinants. We
considered this fact as an actual problem and we performed our own study among
346 native Indians (260 males and 86 females), aged 41–54 years and employed
by the Civil Service. They were consecutively examined between 1997
and 2004. Our large and long prospective study has disclosed a higher risk
for sudden death for those apparently healthy individuals whose
heart rate responses are exaggerated under mild emotional stress and below
normal during peak exercise. This implies novel and simple ways for
the early identification of subjects at increased future risk for
sudden cardiac death. As well as we find out that autonomic disbalance is
related with high risk of development of arrhythmias which is possible to find
out exercise stress test. Individuals showing a high heart rate increase with
mild emotional stress must be considered for additional
investigations and for tailored preventive strategies aimed in first
place to reduce the probability of ischemic heart disease. Fig. 5,
Tab. 2, Ref. 5.
Auth.
13.C13.5. Correction of dyslipidemia in
patients with chronic hepatitis c, combined with diabetes type 2. /M. Derbak, P. Boldizhar/. Georgian Medical News (GMN). – 2014. – # 1(226). – pp. 25-31. – rus.; res.: geo., eng.,
rus.
The article shows the
results of treatment of 118 patients with chronic hepatitis C (CHC) which is
associated with type 2 diabetes mellitus (DM). When planning therapeutic interventions
in chronic hepatitis C in patients with diabetes, it is considered the
presence of visceral obesity, dyslipidemia, and hepatic steatosis. The efficacy
of different treatment regimens was studied.
Found that the usage of ursodeoxycholic acid and ademetionin in HCV patients with diabetes type 2 receiving standard
antiviral therapy (SAVT),
significantly make a positive effect on the level of dyslipidemia. The
normalization of lipid profile allows for a full course of SAVT, which reduces the frequency of relapse. It is
also noted that the simultaneous use of ademetionin and ursodeoxycholic acid
in treatment of chronic hepatitis C
leads to a reduction of side effects of SAVT. Metabolic therapy may be recommended for patients with chronic hepatitis
C in combination with type 2 diabetes
in case of SAVT, and at its contraindications
or intolerance. Fig. 5, Tab. 2, Ref. 5.
Auth.
13.C13.6. Exercise tolerance in patients
with coronary artery disease after coronary artery stenting. /V. Tseluyko, K. Kreyndel, Z. Vashakidze/. Georgian Medical News (GMN).
– 2014. – # 1(226). – pp. 31-36. – rus.;
res.: geo., eng., rus.
The
aim of the research is to investigate the impact of coronary stenting on
exercise tolerance after 4-8 week and after 12-15 months. The study involved
total 90 patients with coronary artery disease, who underwent coronary
stenting. All patients underwent clinical examination, including an assessment
of their condition, the frequency of angina attacks, echocardioscopy, resting
ECG was recorded in all the patients in the standard 12 -lead veloergometry.
Statistical processing was performed using Statistical 6.0 for Windows, the
method of Wald–Wolfowitz. Data are
presented as arithmetic means and error average M±m. We used a statistical method of calculation - the
median ranks (with the median calculated by the usual rules of statistics - the
arithmetic mean of the central members of the ordered series). Significant
differences were assessed by t-test. The level of significance was considered
significant when p<0,05. According to the monitoring data of patients have
a significant increase in exercise tolerance: threshold power increased by 63%
and in 12-15 months by 58% compared with the original. The duration of the
test conducted after stenting increased by almost 2-fold. In addition,
significantly reduced the proportion of patients whose test results were
evaluated as positive. Stenting of the coronary arteries after 4-8 weeks
promotes the significant increase in exercise tolerance that persists after
12-15 months. The factors of associated with insufficient increase in
exercise tolerance after stenting according veloergometry are: female gender,
diabetes, smoking cessation further contributes to the increase in the threshold
of physical activity. Fig. 5, Tab. 2, Ref. 5.
Auth.
13.C13.7. Occurrence of occult HCV
infection among HIV infected patients in Georgia. /L. Gatserelia, L. Sharvadze, M. Karchava, E. Dolmazashvili, T.
Tsertsvadze/. Georgian Medical News (GMN). – 2014. – # 1(226). – pp. 37-41. – eng.; res.: geo., eng.,
rus.
Occult hepatitis C
(OCI) infection has been known as detectable HCV-RNA in the liver or peripheral
blood mononuclear cells (PBMCs) in the absence of detectable serum or plasma
HCV-RNA. OCI has been detected among different patients groups worldwide, it
has been found not only in chronic hepatitis patients of unknown origin, but
also among several groups at risk for HCV infection (hemodialysis patients or
family members of patients with occult HCV). This occult infection has been
reported also in healthy populations without evidence of liver disease.
Prevalence of occult Hepatitis C virus has not been investigated in Georgian
population, where a rate of HCV infection is highest (6.7%) among Eastern European
Countries. The aim of this study was to investigate the occurrence of occult
HCV infection among HIV infected individuals in Georgia. As a pilot study, we
have selected three groups of HIV infected patients for analyses: Group 1 - HIV
infected patients without evidence of liver disease (n=98), group 2 - HIV
infected patients with cryptogenic liver disease (n=34) and group 3 - HIV/HBV
co infected patients (n=29). HCV RNA was tested in PBMCs samples by real-time
polymerase chain reaction. HCV genotyping was performed by Line-probe assay
based on reverse-hybridization technology. Liver fibrosis was evaluated by
transient elastography (FibroScan). HCV-RNA was detected in PBMCs specimens
among 2 (2%) subjects from group 1, 4 (12%) subjects from group 2, and 9 (31%)
subjects from group 3. HCV genotypes were determined for 14 of 15 OCI subjects
resulting following genotype distribution: 6 (46%) - 1b, 3 (23%) - 2a/2c and 5
(38%) - 3a. One samples failed to be genotyped due to extremely low HCV viral
load. Our data revealed the occurrence of occult HCV infection in HIV infected
patients. No single HCV genotype was predominant in the present study. Liver
fibrosis was found more frequently and the fibrosis score was significantly
higher in OCI patients versus negative ones, suggesting that undiagnosed OCI
might impact on the liver damage. The study demonstrated that testing only for
HCV antibody fails to identify the true prevalence of HCV co-infection among
HIV infected patients. We propose that in the absence of liver biopsy
specimens, analysis of PBMC sample for HCV-RNA would be informative for detection
of occult HCV. Fig. 5, Tab. 2, Ref. 5.
Auth.
13.C13.8. Comparative analysis of
structural changes in thrombocytes during Alzheimer’s and Parkinson’s diseases.
/V. Simonidze O. Samushia/. Georgian Medical News
(GMN). – 2014. – # 1(226). – pp. 41-46. – rus.;
res.: geo., eng., rus.
The paper deals with
the study of the changes in the formed elements of blood during the Alzheimer’s
and Parkinson’s diseases. While studying the structure of thrombocytes, a
number of identical structural changes were identified in case of both
diseases. The study has revealed various shapes of thrombocytes, the production
of pseudopodia on their surface, high level of body outline, specific
distribution of glycogen granules and their concentration on the periphery,
glycogen eruption, dissociation of Alpha-granules towards the edge, and
effective outline and density of the granules. There are frequent cases of the
granule eruption from the body (exocytosis), the existence of vacuoles on the
matrix, the rise in the number of gigantic thrombocytes and, consequently,
considerable enhancement of the ability of absorption. Besides, there is a rise
in the number of degenerated cells. The shape of thrombocytes is often changed
and stretched on one side. The produced pseudopodia make the impression of
participation in phagocytosis. As for the difference between changes, during
Parkinson disease the amount of thrombocytes is low, more gigantic and
distorted shape, less invagination of plasma membrane, low amount of granules
and less intensity of alpha-granule eruption from the body. The changes
revealed by the research show the activity of thrombocytes, which should be
connected to their participation in protective functions of the body towards
existing agent. And the diseases – although with similar but with different
pathogenic mechanisms – are being developed with participation of non-specific
agents. Fig. 5, Tab. 2, Ref. 5.
Auth.
13.C13.9. Efficiency of recombinant
erythropoietin administration in hemoglobinopathy H. /M. Hasanova, CH. Asadov, Z. Alimirzoyeva, T. Mammadova, A. Shirinova/.
Georgian Medical News (GMN). – 2014. – # 1(226). – pp. 46-49. – eng.; res.: geo., eng., rus.
Alpha-thalassemia
is widely spread in human population and one of the most common types of α-thalassemia is hemoglobinopathy
H which develops with mild microcytic hypochromic anemia, hepatosplenomegaly
and jaundice. The basic method of anemia correction is blood transfusion.
However this method has crucial deficiencies. As it is known recombinant erythropoetin
(rEPO) contributes to erythroid proliferation and could be used for anemia
treatment. The aim of the study was to qualify
efficiency of administration rEPO in complex therapy of hemaglobinopathy H.
Study involved irregularly transfused 14 patients with hemoglobinopathy H (2
males and 12 females). Control group included 30 healthy persons. Recombinant
erythropoietin (Eprex) administrated hypodermically 10,000 units 3 times a week
during 6 months. Average hemoglobin level before treatment was 62 g/l. Responses
to the rEPO treatment varied from 9 to 70 g/l, 9 (64%) of patients had a good
response, showed an increase in hemoglobin level more than 20 g/l. In 4
patients (29%) had a moderate response (10-20 g/l), but only in 1 (7%) patient
occurred poor response. Changing the parameters of erithrocyte indices,
hemoglobin fractions, serum iron and serum ferritin level are not statistically
significant. It can be concluded that the use of rEPO in complex therapy of
hemaglobinopathy H, leads to increased levels of hemoglobin and consequently
reducing the need for blood transfusions. Fig. 5, Tab. 2, Ref. 5.
Auth.
13.C13.10. Tattoos: the relationship of
diagnostic and semantic meaning. /A. Romaniuk, N.
Tatsenko, V. Smeyanov, D. Movchan, R. Moskalenko/. Georgian Medical News (GMN).
– 2014. – # 1(226). – pp. 50-54. – eng.;
res.: geo., eng., rus.
This article
investigates a tattoo as a component of non-verbal semiotics of medical
discourse in pathological anatomy. The purpose is to estimate the diagnostic
value of tattoos on the body of patients as semiotic and symbolic aspect of
medical communication. Tattoos are classified into three types: image tattoos,
feature tattoos, and conventional tattoos (symbolic tattoos). Conventional
tattoos are the most informative component of medical discourse symbolics because
of their diagnostic value. During the investigation it has been found out that
criminal tattoos have the greatest value because of their structuring, clear
connection with certain diseases (tuberculosis, liver cirrhosis), and also
valuable are tattoos related to drug and alcohol addiction, which are characteristic
for patients with viral hepatitis, osteomyelitis. Fig. 5, Tab. 2, Ref. 5.
Auth.
13.C13.11. Activity of white rat antioxidant
system under chronic stress. /Z. Kuchukashvili, M.
Chipashvili, L. Lekiashvili, M. Mikadze/. Georgian Medical News (GMN). – 2014. – # 1(226). – pp. 54-59. – rus.; res.: geo., eng.,
rus.
The aim of the
research was to study the influence of long-term stress conditions on the rate
of lipids’ peroxidation (LPO), activity of antioxidant system and energy
metabolism in brain, cardiac muscle and lymphocytes under 30-days isolation and
diurnal cycle violation. Obtained results prove about the increasing of
intensity of LPO in studied tissues under long-term stress conditions.
According to the data, in lymphocytes, brain and cardiac muscle it was observed
quantitative rising in nitric oxide (NO) concentrations. In junction with this
it was changed the intensity of LPO, proved by the increase in quantities of
products of this process. In contrast with this it was shown decrease in
activity of enzymes of antioxidant system: Superoxiddismutase, Catalase,
Glutathionreductase and Glutathionperoxidase, also we’ve studied activities of
mitochondrial enzymes, such as, Succinatdehydrogenase, Creatine Kinase and
Aconitase. It was shown that isolation and diurnal cycle disorders represent
factors that induce remarkable down regulation of energy metabolism and
increasing of oxidative stress pathways. Supposedly influence of stress factors
could induce nonreversible processes that could stimulate various
neurological, cardio-vascular and immune system pathologies. Fig. 5, Tab. 2,
Ref. 5.
Auth.
13.C13.12.
Epidermal growth factor receptor expression and epidermal growth factor blood
plasma content in simple and complex endometrial hyperplasia. /N. Dznelashvili, D. Kasradze, A. Tavartkiladze, A.
Mariamidze/. Georgian Medical News (GMN). – 2014. – # 1(226). – pp. 59-65. – rus.; res.: geo., eng.,
rus.
The goal of our study
was to concurrently determine the prognostic significance of Epidermal Growth
Factor Receptor (EGFR) expression in endometrium and Epidermal Growth Factor
(EGF) blood content in simple and complex hyperplasia. In order to detect EGFR
expression, immunohistochemical examination of endometrial scarp from 35
patients was done along with HPLC (High performance liquid chromatography)
method, for measuring EGF blood plasma content. The numerical data obtained
were processed statistically using computer program SPSS-12. According to the
results: 1. A significant/marked increase in EGF blood plasma level together
with pronounced EGFR expression in simple endometrial hyperplasia (without
atypia) suggests that simple hyperplasia is likely to transform into complex
form, while unchanged level of EGF against the background of mild EGFR
expression is probably indicative of not very bad prognosis. 2. Normal indices
of EGF blood plasma level in simple endometrial hyperplasia (without atypia), accompanied
by mild EGFR expression is suggestive of good prognosis. 3. A sharp or
extremely sharp increase in EGF blood plasma level with pronounced EGFR
expression in complex endometrial hyperplasia (without atypia) is likely to
indicate poor prognosis that may lead to the transformation into atypical form.
However, unchanged EGF blood plasma level against the background of mild EGFR
expression in complex endometrial hyperplasia (without atypia) is likely to
point to not very bad prognosis. 4. A marked increase in EGF blood plasma level
with a pronounced EGFR expression in complex endometrial hyperplasia (without
atypia) is likely to indicate poor prognosis that may lead to the
transformation into atypical form. Because it is evident that drastic increase
in EGF blood plasma level is not necessary, other factor should be suspected to
play the major role, i.e. the substance that will (or will not) withstand
neoplasia. Fig.
5, Tab. 2, Ref. 5.
Auth.
13.C13.13. The experimental application of
chitosan membrane for treating chemical burns of the skin. /M. Pogorielov, O. Kalinkevich, E. Gortinskaya, R. Moskalenko, Yu.
Tkachenko/. Georgian Medical News (GMN). – 2014. – # 1(226). – pp. 65-70. – rus.; res.: geo., eng., rus.
The basic method for
skin damage treatment, including chemical wounds, is a topical application of
different agents. Their objective is to repair structure of the skin and its
functions. All dressings for treating wounds are classified as biological,
artificial and composites containing both synthetic and natural materials.
There are many studies concerning application of chitosan, which is a derivate
of natural polymer chitin, as a basis for topical materials to treat burns.
However, data are rather limited about application of chitosan for treating
acid burns. Thus, the aim of research is to study the morphological futures of
skin regeneration after the chemical burn applying chitosan membranes. We
performed the experiment on 60 young rats (3 months old) with the chemical
burns of third-degree (IIIA degree) to study the morphofunctional features of
skin regeneration. Later we applied the chitosan membranes on the burns. We
carried out a histologic investigation on the biopsy specimens of wound to
determine the morphological features of wound regeneration. The results
confirmed that earlier granulation and epithelialization of the skin surface
happened as the chitosan membrane was applied on the acid effected surface. The
final result of the application of chitosan film is to achieve full
epithelialization, preserve the structure of tissues beneath the burn and prevent
getting scars. Fig. 5, Tab. 2, Ref. 5.
Auth.
13.C13.14. The redox potentials and
morphological features of the pancreas, small intestines and liver under early
enteral nutrition via micro-jejunostomy in modeling of acute pancreatitis. /G. Khatchapuridze, V. Leonov/. Georgian Medical News (GMN). – 2014. – # 1(226). – pp. 71-75. – rus.; res.: geo., eng.,
rus.
The article
investigates morphological changes in pancreas, liver, and small intestine
after early enteral nutrition in Vistar rats after modeling of acute
pancreatitis and creation of jejunostomy. Morphological changes and redox
potential measurements show that early enteral nutrition via micro-jejunostomy
slows down the development of pathological processes in Vistar rats. Fig. 5,
Tab. 2, Ref. 5.
Auth.
13.C13.15. Reproductive health in Georgia /A. Khomasuridze/. Actual Topics on Women Health. – 2012. – # 2. – pp.
7-10. – eng.; abs.:geo.,
eng.
Now it is well-known that
Georgia has pioneered in the World to make reproductive health an independent
medical discipline officially in 1997, separating it from obstetrics and
gynecology. Since Georgia belongs to the group of developed European countries,
as for typical for them, the birth rate decreased and the population was aged.
It is also necessary to note that the infrastructure of infertility in Georgia
equals to the World data. So, in the field of re productive health in Georgia,
we have some problems and for the successful solution of representing problems,
we made the following activities. Thanks to our efforts and the help of the
Ministry of Labor, Health and Social Affairs together with many International
Organizations, we’ve managed to bring the number of artificial abortions below
30000 by 2002 (country population 4.5 million and the number of births - about
50000) and illegal abortions were practically eliminated but, the annual number
of artificial abortions around 20000-30000 is too high for the small country.
Approximately 25 years ago the prevalence of contraception in Georgia equaled
to the zero and artificial abortion was the only “method of fertility
regulation”. The prevalence of modern contraception in Georgia has reached 55%
which is the quickest jump in the history of contraception. The Zhordania
Institute managed to introduce all traditional and high technology methods from
the functional tests to the first successful use of IVF procedure in 2000. More
than 2000 children are already born after IV F and the “oldest” is 12 years
old. Fig. 8, Tab. 3, Ref. 6.
Auth.
13.C13.16. Gender medicine education system in Germany. /B.
Pfleiderer, D.Burghaus, K. Kannes, A. Bauland, J. Becker, A.
Kindler-Röhrborn, M. Heue/. Actual Topics on Women
Health. – 2012. – # 2. – pp. 19-27. – eng.; abs.:geo., eng.
Gender
Medicine is one of the most important fields in medicine of 21st century. There
is a greater difference between male and female as well as on micromolecular,
and at the level organs and systems of human body. The difference depends on
the genetics, biological factors (Sex, Hormones, signal pathways in cells,
metabolism), and the environment and social factors. Accordingly, severity of
disease, therapy outcome, prevalence and then intervention methods also related
to the environment, biological and social factors. Gender is related to how we
are perceived and expected to think and act as women and men because of the way
society is organized, not because of our biological differences. Introduction
to gender and health is to learn the difference between sex and gender and
understanding gender as a determinant of health. In the article described the
German research group gender-specific teaching modules in medicine – a
collaborative project between the medical faculties of Muenster and
Duisburg-Essen. Head of the project is prof. Bettina Pfliederer. Great
importance is an adequate awareness of this problem. It is important the
existence of the educated command of Medical Experts for carrying out of different
researches in the field of Gender Medicine. For resolving this problem it is
necessary to begin all with the high quality training program and well-formed
schools. Medical Expert must be the professional, communicator, collaborator,
manager, health advocate and scholar. The graduating students (medical experts)
have to know the difference between sex and gender and be able to apply a
gender lens for approaching any medical problem, from a gender perspective. Key
competency of scholars is that the graduating students will be able to recognize
and analyze gender bias in research design, implementation and analysis. Fig. 7, Ref. 6.
Auth.
13.C13.17. Use of Fareston in postmenopausal women with breast cancer. /M.
Zaridze, G.Tevzadze/. Actual Topics on Women Health. –
2012. – # 2. – pp. 28-36. – rus.; abs.: geo., eng.
The
aim of the research was to study effectiveness of Fareston treatment in women
with menopause in III-IV stage breast cancer. We studied 195 patients aged
60-80, who were receiving treatment in chemotherapeutic department of National
Oncologic Center of Georgia in 2003-2011y.y. Patients were divided into 2
groups: I – 97 patients, who were receiving hormone therapy with Tamoxifene; II
– 98 patients, who were receiving hormone therapy with Fareston; 50 out of the
98 patients in the second group were in III stage of the disease, 17 were
receiving hormone therapy with Fareston in the neo-adjuvant setting, 33 – in
adjuvant setting. 19 patients with disseminated form of the breast cancer after
developing resistance towards Tamoxifene were receiving Fareston. 29 patients
were treated with Fareston due to metastatic bone damage. Therapeutic dose of
Fareston was 60-120 mg a day. Assessment of the treatment results showed that,
in case of using Fareston in adjuvant regime in patients with III A-B stage
disease, on the IV-VII month of the treatment 11% had disease progression,
while this figure was 16% in I group. By using complex neo adjuvant (poly
chemo-hormone therapy) treatment regime, full or partial regression of the
disease was achieved in primary site as well as in regional metastatic lymph
nodes. Afterwards these patients underwent an operation and adjuvant
chemotherapy. 5 patients who had III A-B stage disease, on the III-IV month of
the follow up developed bone metastasis, 3 in visceral organs. 29 patients with
fourth stage of the disease, who had metastatic bone damage, underwent
palliative chemo-hormone therapy + bisphosphonates + radiation therapy.
Stabilization was achieved. Side effects characteristic of Tamoxifene were not
revealed during the treatment with Fareston. Thus, using Fareston in neo
adjuvant, adjuvant and palliative regimes is totally justified. Tab. 4, Ref. 15.
Auth.
13.C13.18. The role of mr spectroscopy in the diagnosis of breast cancer. /N.
Meladze/. Actual Topics on Women Health. – 2012. – # 2. – pp.
37-42. – eng.; abs.:geo., eng.
The
breast cancer (BC) takes the first place in the structure of oncological
diseases of female population all over the world. Currently, one of the most
important problems of mammology is the differential diagnostics of good-quality
and malignant formations of mammary glands. It is known that MR mammography is
a sensitive, however, not always specific method for diagnostics of diseases of
mammary glands. In this connection, we have found actual to our study carrying
out the research, purpose of which was to explore the possibilities of
application of magnetic resonance spectroscopy in the differential diagnosis of
formations of breast. MR spectroscopy was conducted to 73 women with the breast
formations. The breast cancer was revealed in 52 patients (71.3%), fibroadenoma
– in 19 (26%), lypoma – in 2 (2.7%). Single Voxel proton MR spectroscopy was
carried out using the sequence of RESS before and after the introduction of
contrast preparation. Voxel size was 1-3 mm. The increase of concentration of
choline in the malignant formations has been revealed in the study without the
contrast substance in the 7 observations, and in the study without introduction
of contrast substance - in 9 ones. In all other observations, the identification
of the choline peak in malignant formations was not possible, which we
connected with a greater Voxel size, exceeding the size of formation. In
addition, the increase of a choline level was determined in 2 (10.5%)
observations of fibroadenoma both on up to, and on postcontrast researches. In
connection with the inhomogeneity breast tissue, the availability of plenty
lipids and water also arise difficulties due to signals from the data of
metabolites. Thereof, it is necessary to use various methods for the reduction
of signal intensity from the specified substances which was not always able to
be suppressed effectively. Considering a close arrangement of peaks in the
spectrum, it was not always possible reliably to judge about the presence or
absence of choline. MR spectroscopy showed the best results after the
introduction of contrast preparation that is associated with a more accurate
voxel positioning. But there are diagnostic limitations of the MR spectroscopy,
for example, when voxel size exceeds the size of a tumour, the distribution is
determined by a very low-power signal from choline or lack absence of it and it
does not allow to diagnose the breast cancer. Ref. 9.
Auth.
13.C13.19. Melatonin receptor (MT1A), universal nitric oxide synthase (uNOS), and
breast cancer. /D. Kasradze, A. Tavartkiladze/. Actual Topics
on Women Health. – 2012. – # 2. – pp. 43-47. – eng.; abs.:geo., eng.
The
experimental research confirmed that melatonin plays an important role both as
an oncopreventive agent and onco-therapeutic medication. We have studied 30
patients (28-53 years old) with breast cancer – with clinical/morphological
diagnosis: ductal adenocarcinoma at the IV stage. The expression of melatonin
receptor (MT1A) in cellular cultures of mammary gland tumors was studied using
immune histochemical method and reagent MEL-1A-R antibody (GeneTex, Catalog
Number GTX108221). The data of histochemical test on melatonin receptor (MT1A)
expression in healthy patients breast bioptate were used as control. In
parallel, we have studied expression of enzyme universal nitric oxide synthase
(u-NOS) in cellular cultures mammary ductal adenocarcinoma (30 cases) using
Western Blot Method (reagent u-NOS antibody Catalog Number GTX73127. Gene Tex).
The findings were compared to the data of u-NOS expression in healthy patients’
breast bioptate. The obtained results were studied statistically using computer
program SPSS, version 12. The results of study demonstrated that the expression
of MT1A receptors are decreased in case of mammary ductal adenocarcinoma by
37.3 times, compared to control (p<0.01). It should also be mentioned that
the more anaplastic the cancer cell is - the more is decreased melatonin MT1A
receptors expression. The expression of universal nitric oxide synthase (u-NOS)
is decreased in case of mammary ductal adenocarcinoma by 25.5 times, compared
to control (p<0.01). It should also be mentioned that the more anaplastic
the cancer cell is - the more is decreased u-NOS expression. Note that decrease
in u-NOS expression directly correlates with decrease of melatonin receptor
protein MT1A expression level. Ref. 5.
Auth.
13.C13.20. Immunological treatment of unbearing pregnancy with lymphoimmunological
method. /N. Rusakova/. Actual Topics on Women Health. – 2012. – # 2. – pp. 48-53. – rus.;
abs.:geo., eng.
For
the restoration of immunological status of the pregnant woman’s organism and
blocking factor of autoserum additional stimulation, the immunization with
father’s antigens is needed. Lymphoimmunotherapy has lots of advantages in
comparison with the method of transplantation of skin shred. It’s technically
easily to fulfill and any complications are excluded. The method of
immunization by means of purified lymphocytes has been used since 1988 at E.
Pipia Railway hospital in Tbilisi, and from 2008 at J. Zhordania Institute of
Human Reproduction. For 25 years of treatment the effectiveness of this method
amounts to 92%. In order to study the therapeutic effect of lymphoimmunotherapy
in women with a familiar immune unbearing pregnancy. Total of 627 women in the
age of 18-40 years were under supervision during 25 years. On the basis of the
obtained results, it is possible to come to the conclusion that in cases of
unbearing pregnancy, when with smaller or with greater probability it is
possible to assume availability of immunological reasons, the method applied by
us yields positive results. It is necessary to continue researches for the
definition of criteria of selection of patients, time of vaccination,
re-vaccination both before and after pregnancy. It is preferably to use
lymphoimmunotherapy together with alternative methods of reproductology with objective
of enhancing their effectiveness. Ref. 10.
Auth.
13.C13.21. Eating disorders. /M. Shakarashvili, N. Zhvania/. Actual Topics on Women Health. – 2012. – # 2. – pp. 54-65.
– rus.; abs.:geo., eng.
Eating
Disorders (ED) are the complex of symptoms, connected with abnormal eating
habits which may involve either insufficient or excessive food intake to the
harm of an individual's physical and mental health. The main forms of ED are:
Anorexia Nervosa (AN) and Bulimia Nervosa (BN). One of the causes of rising
interest of society to ED is the possible tragic outcome of this pathological
condition. Unfortunately, the frequency of ED increases. The ED most often
affects women. As usually psychological signs and/or habits of women with ED
are: low self-confidences, lack of their real life control, personality
conflicts, fairs, solitude and the difficulties with expression of fillings and
emotions. The signs of AN are: total refusal, or immoderate food restriction
and irrational fear of gaining weight. BN is characterized by recurrent binge
eating followed by a compensatory purging: self-induced vomiting, excessive use
of laxatives/diuretics, or excessive exercise. The reasons of AN and BN are not
entirely understood. There are the following causes of eating disorders:
biological (genetic predisposition), psychological (family influence and intrapersonal
conflicts) and social (the influence of the environment). Treatment of ED is
quite difficult and needs a high quality professional help. The treatment
considers: gain of normal weight and treatment of psychological causes of ED -
correction of thoughts and behavioral habits. The prevention of progress of Ed
in future is also very important. Tab. 1, Ref. 40.
Auth.
13.C13.22. Chest pain in women: influence of imaging
modalities on the management. /T.
Vakhtangadze/. Actual Topics on Women Health. – 2012. – # 2. – pp. 66-73. – eng.;
abs.:geo., eng.
Coronary
syndrome is one of the most common causes of cardiovascular disease in both pre
and postmenopausal women. However, The Euro Heart Survey of Stable Angina shows
that women with angina are both under-investigated and under-treated. In the
last decade, the role of modern imaging technologies in the diagnosis and
development of the treatment strategies of ischemic heart disease has risen,
but the information on their ability to diagnose women with coronary syndrome
is still small. Myocardial SPECT provides an information on perfusion pattern,
whereas CT angiography shows coronary anatomy, evaluates atherosclerotic
plaques, distinguish soft and calcified lesions. The case presented in this
article shows the possibilities of different techniques in evaluation of a
woman with chest pain. We evaluated the woman with chest pain and normal
coronary arteries. Our data indicate that there is an evident response to
dipyridamole in women, which is expressed in pain and/or ECG changes; however,
this does not correlate with perfusion pattern. Fig. 1, Tab. 1,
Ref. 8.
Auth.
13.C13.23. Inappropriate sinus tachycardia. /Sh. Avaliani, M. Balavadze, D.
Chiabrishvili/. Actual Topics on Women Health. – 2012. – # 2. – pp.
74-79. – rus.; abs.:geo., eng.
Inappropriate
Sinus Tachycardia (IST) is a rare type of cardiac arrhythmia within the
category of supraventricular tachycardia. IST is characterized by resistant
symptomatic increase of frequency of sinus rhythm, more than 100 beats/min as
in the resting state, so in the condition of wakefulness or with the minimal
physical activity and with very little deceleration of sinus rhythm during
sleep. IST may be caused by abnormal structure or function of the sinus node,
or it may be part of the problem called dysautonomia, a disturbance and/or
failure of the autonomic nervous system. The mechanism and primary ethology of
IST has not been fully elucidated. An autoimmune mechanism has been suggested
because several studies have detected autoantibodies that activate beta
adrenoreceptors in a part of patients. The mechanism of the arrhythmia
primarily involves the sinus node and peri-nodal tissue and does not require
the AV node for maintenance. The symptoms reported by patients vary in
frequency and severity. The treatment of IST is possible by the use of
pharmacological and invasive methods, with varying degrees of success. Some
types of medication tried by cardiologists and other physicians include: beta
blockers, selective sinus node IF channel inhibitors (ivabradine), calcium
channel blockers. Invasive treatments include several forms of catheter
ablation such as sinus node modification (selective ablation of the sinus
node), complete sinus node ablation (with associated implantation of a
permanent artificial pacemaker). Ref. 9.
Auth.
13.C13.24. The specificity of multiple sclerosis
clinical course in females. /M.
Beridze, M. Alpaidze, S. Sopromadze/. Actual Topics on Women Health. – 2012. – #2. – pp.
88-95. – eng.; abs.:geo., eng.
Multiple
sclerosis (MS) is an autoimmune disease causing inflammatory demyelization of
the central nervous system (CNS). MS usually causes a relapsing-remitting
course and later turns into a chronic progressive disease. Several immune
modulation therapeutic approaches are approved by US Food and Drug
Administration to treat MS. All these medications as well as other novel
therapeutics showed the various side effects and their effectiveness in
treating of MS is not sufficient. Scientists still search for most effective
and safe treatment for MS population. Gender-related issues in multiple
sclerosis include the important and widely accepted clinical observations that
men are less susceptible to the disease than women and also that disease
activity in multiple sclerosis is decreased during late pregnancy. This gender
preponderance is also observed in other autoimmune diseases but the
underlying mechanism behind this female prevalence is not very well understood.
Specifically, the protective role of testosterone in young men and the
protective role of the pregnancy hormone estriol in pregnant women are
discussed. The involvement of vitamin D in MS pathogenesis and its connection
to sexual hormones are also discussed. The rationale for novel therapies in
multiple sclerosis based on the protective roles of these sex hormones is
presented. Ref. 19.
Auth.
13.C13.25. Changes in the state of parodontium tissues under the influence of
extreme factors. /I. Sakvarelidze/. Actual Topics on
Women Health. – 2012. – # 2. – pp. 96-99. – rus.; abs.:geo., eng.
The
oral cavity very sensitively reflects the general state of organism reactivity
during the changes in the environment. We should consider the damaging effect
of emotional stress and complexity of interaction between different systems responsible
for the trophism of paradontium. Stress causes acute damage of parodontium
tissue. The researches showed that stress can provoke haemo-microcirculatory
disorders, disrupt trophism and metabolic processes in the alveolar tissues.
Under the influence of extreme factors (hyperbarism, space flight, hypokinesia)
on functional, clinical, microbiological, immunologic and cytological
indicators of paradontium its vascular tone and blood flow are violated. The
violation of vascular tone and blood flow is accompanied by a change in
microbiocenosis, which is expressed by an increase in the number of bacteria
capable of keeping the inflammation in the tissues of the mouth, and by the emergence
of parodontopathogenic microorganisms. Ref. 13.
Auth.
13.C13.26. ST and T wave changes in children of
different ages. /G. Chakhunashvili, N. Jobava/.
Pediatric
Cardiology. – 2013 – # 7. – pp. 11-18. – geo; abs.: geo., eng.
We think that ST and
T wave changes in children of different ages must be discussed. We analyzed over 5000 child of different ages from
1981-2013. Despite the age, children
appeared to have depressed T wave: - I standard lead – besides first age group; - II standard lead – in all age group; - AVF – in two age groups; - V4 – in last two age groups; - V5-V6 – in all age groups these leads shows as
short-lived and also timely born children diagnostic criteria. This is
important for disease treatment and also for estimation-prediction of dynamics,
for prevention of cardiovascular diseases during rehabilitation in adults. 8 types of ST and T wave morphological changes is the
leading estimation criteria during disease progression, as in short-lived, also
in timely born children, also for all age groups of children and adult. This is
important for disease treatment and also for estimation-prediction of dynamics,
for prevention of cardiovascular diseases during rehabilitation in adults.
Tab. 3, Fig. 31, Ref. 6.
Auth.
13.C13.27. Estimation of sportsmen physical
and functional Condition under the treatment of apipulmo and apicori. /G. Chakhunashvili, N. Badriashvili, N. Topuridze, N. Jobava, Z.
Shaqarashvili, Z. Pkhaladze, K. Chakhunashvili/. Pediatric Cardiology. – 2013 – # 7. – pp. 19-22. – geo; abs.:
geo., eng.
Apipulmo is a mix of
two biologically active components - bee and coniferous extract products, which
are full of essential substances. It regulates metabolism of vitamins, amino
acids and micro elements, rust and restoration reactions, improves utilization
of tissues with oxygen, and increases physical and mental capacity of work,
improves reproductive system functions, increases the ability of adaptation to
stress reactions and defensive mechanisms. It has immune stimulating, immune
modulating and anti-microbe effects. Apipulmo Amino acids are easy to
assimilate, which assists to preserve nitrogen balance and organism growth.
Estimation of basketballers physical and functional condition under the
treatment of Apipulmo and Apicori. Stuff and methods: This work was based on 50
sportsmen (12-18 years old) physical development index and adaptation to load
while getting Apipulmo and Apicori (three tablets once a day over a month).
Results of research and their discussion: On the first step of research studied
sportsmen anthropometric, physical and functional features before using
Apipulmo/Apicori and after 3 months of using these products. Conclusion: Usage
of Apicori and Apipulmo increases capacity of work, widens training and competition
adaptation mechanisms conditions, fastens restoration processes after intensive
physical load. Tab. 2, Ref. 10.
Auth.
13.C13.28. EKG parameters (St and T wave)
and capillaroscopic parameters during diabetes mellitus type I in children. /G. Chakhunashvili, N. Jobava, K. Chakhunashvili, D. Chakhunashvili/.
Pediatric Cardiology. – 2013 – # 7. – pp. 20-24. – eng; abs.: geo., eng.
Diabetes is
associated with high risk of cardiovascular diseases. The disease increases the
chance of developing cardiovascular pathologies by 2-4 times, compared to
healthy population. Aim of the research: Evaluate EKG parameters during
diabetic cardiomyopathies; Detecting changes in Capillaroscopic parameters. Methods: Cases of 32 children(6-15 years old, 17
boys,15 girls) diseased with diabetes type I was studied, who were hospitalized
In TSMU pediatric clinic’s endocrine department. 13 of them were diagnosed and
their cases were studied at once, 10 of them had been diagnosed 2-5 years
before, 9 0f them – 5-10 years before. We did capillarosopic examinations. we
determined carpillarospopic background (pink, pale, cyanosis), transparency
(transparent, dimmed), number of capillaries (6-7 in sight, more or less),
diameter of capillaries ( dilated, contracted), shape of capillaries (hair
like, anastomosis, loop like), Order/Disposition of capillaries (shows some
order, does not show any order), blood flow type (homogenous, fast, slow),
capillaries( homogenous, non-homogenous). 8 types of ST and T wave changes were
determined (G. Chakhunashvili, N. Jobava 2005-2012). conclusions: 1. In group I EKG is less informative. 2.
Hypertrophies of left ventricle and atrium and disorders of repolarizations
were mainly found in group II. 3. In 64% of cases EKG showed rhythm and
conduction disorders, which were more often in group II. 4. To achieve early
diagnosis of cardiomyopathy and start early therapy, EKG must be recorded in
every diabetes type I. 5. Determining types of changes in ST and T wave is
important in children with type I diabetes. 6. Capillaroscopic data are quite
important to get the right prognosis of disease progression. Nowadays there are
several medications for treating cardiomyopathy, which can improve the quality
of life. Tab. 5, Ref. 9.
Auth.
13.C13.29. EKG parameters (ST and T wave)
during diabetes mellitus type I in children during some inflammatory
and non-inflammatory diseases. /G. Chakhunashvili, N. Jobava, K. Chakhunashvili, D. Chakhunashvili/.
Pediatric Cardiology. – 2013 – # 7. – pp. 26-32. – geo; abs.: geo., eng.
The frequency and description
of ECG changes of ventricle complex terminal part in children is one
of the important things. ECG parameters during (ST and T wave) Diabetes
Mellitus type 1 is described in details during some inflammatory and
non-inflammatory diseases. Conclusion: ECG parameters during (ST
and T wave) Diabetes Mellitus type 1 is described in details during some
inflammatory and non-inflammatory diseases has some changes during
childhood, which determines the strategy of treatment. The frequency
and description of ECG changes of ventricle complex terminal part
in children is one of the important things in disease progression, diagnosis
and rehabilitation in child age. Also for the involvement of cardiovascular
system in pathological process. Timely estimation of ST and T wave
changes conditions prognosis of the cardiovascular damage during
Diabetes Mellitus Type I, some inflammatory and non-inflammatory diseases
in child age. Tab. 2, Fig. 2, Ref. 21.
Auth.
13.C13.30. The frequency of mitral valve prolapse, etiology and pathology, determination of pathological process involvement degree and discussion in context with arrhythmia.
/G. Chakhunashvili, N. Jobava, K. Chakhunashvili, M. Shvangiradze, M. Inasaridze, D. Chakhunashvili/. Pediatric Cardiology.
– 2013 – # 7. – pp. 32-37. – geo; abs.: geo., eng.
They first talked about mitral valve prolapse in 60’s of XX Century. Many famous scientist works were dedicated to its etiology and diagnosis (White, 1931; Reid, 1961; Barloid, 1963; Hancock, Cohu,
1966; Jeresaty, 1979 and others). Aim of research: The aim of research was to show the diagnostic meaning of mitral valve prolapse and arrhythmia in children and adults. Methods and stuff of the research: 1500 children (0-15 age) and 250 children (max age 18) from sport schools were examined and analyzed. All of them were examined with clinical-laboratory and instrumental methods. Conclusion: 1. In 56% of children who had mitral valve prolapse had arrhythmia. 2. Their physical activities must be under strictest control just in case new rhythm disorders cannot damage their health. Ref. 19.
Auth.
13.C13.31. Clinical value of ST segment and
T wave, during ventricle repolarization, early discharge partial syndrome and
narrowed P-Q interval in children and adolescents. /N. Jobava, G. Chakhunashvili, K.
Chakhunashvili, D. Chakhunashvili/. Pediatric Cardiology. – 2013 – # 7. – pp.
38-41. – geo; abs.: geo., eng.
Nowadays it is known that, cardiovascular system can
be involved in pathological process during either diseases or not right
training. Coronary blood flow is also damaged during some congenital or
acquired non-inflammatory diseases. That is why we think it would be right to
detect all above said changes, analyze them during disease or in healthy contingent
(sportsmen). Meaning of ST segment and T wave during repolarization syndrome
(Prolonged Q-T interval), ventricle repolarization syndrome, Narrowed P-Q
interval (0,12) and early discharge of ventricle in children and adolescents. 4500 children of
age 0-15 were examined with different diagnosis (Grp I) and 350 sportsmen of
age under 18 from different sports schools. All of them were examined with
clinical-laboratory and instrumental methods. The numeric index was evaluated
with student criteria (t), qualitative criteria 2, comparing
between groups by Pearson. Difference was trustworthy if t>1,96 p<0,05
and 2 >3,84, p<0,05. Diagnosing syndromes,
as variety of normal EKG, must take a lot of caution and is justified if we
have corresponding data of changing during clinical examination and EKG changes
in dynamic. The further study also must be done about clinical syndrome, as we
must be aware that if syndromes are symptoms of pathology and they stay after
curing the pathology, we might think that the changes in EKG is individual for
the healthy organism. The research done by us proves that ST segment and T
wave changes in children demand individual discussion, which must stay as a
clinical information from childhood throughout the life. Ref. 13.
Auth.
13.C13.32. Once
again about
acute rheumatic
fever. /G. Chakhunashvili, R.
Svanadze,
Once again attention should be paid that last few years rheumatic fever number has decreased in economically developed countries and embraces 5 occasions in every 100000 citizens. In less developed countries disease index is 26-116 in every 100000 citizens. Mostly it’s adults and children from 5-15 who get ill, but newborns and old people can also fall ill. Manifest is three times frequent in north
Auth.
13.C13.33. In pediatric cardiology -
possible usage of immune therapeutic medicine “GA-40” in treatment
during infectious pathology. /G. Chakhunashvili, N. Jobava, K. Chakhunashvili, D. Chakhunashvili/. Pediatric Cardiology.
– 2013 – # 7. – pp. 77-78. – geo; abs.: geo., eng.
Aim of work:
Determination of usage of “GA-40” usage in treatment. The reason of the
research was to investigate how “GA-40” effects on G.S.S. in experiments,
where instrumental index and morphological data will be analyzed.
Conclusion: “GA-40” effect was positive on cardiovascular
system, cardiomyocytes, capillary endothelium (experiments on rabbits).
This medicine should be used in pediatric cardiology
during infectious diseases. Tab. 1, Fig. 8, Ref. 6.
Auth.
13.C13.34. The prospects of sporting
valeology. /I. Dolidze, G.Chakhunashvili/. Pediatric
Cardiology. – 2013 – # 7. – pp. 79-81. – geo; abs.: geo., eng.
Sports Valeology is a
science on the and means of formation, preservation and strengthening
of humans health. Valeology, as integrative science, gained its place
in scientific world and is solving the problems of motivated health.
Valeologist should synthesize in himself basic knowledge, typical for
medical-prophylactic specialists, teachers and psychologists. The
sporting Valeology, alongside with its theoretical and practical trends,
should be considered a basis of General Valeology, It is obligatory to
outline the plan of its perspective development. Ref. 14.
Auth.
13.C13.35. Hearing function in
industrial workers: occupational noise influence. /M. Tushishvili,
Hearing function has been estimated in workers engaged in construction
of trans-Caucasian pipeline over
Auth.
13.C13.36. Immune
system and euthyroid goiter. /G. Chakhunashvili, N. Topuridze,
N. Badriashvili, K. Chakhunashvili, S. Ghlonti/. Social, Ecological & Clinical
Pediatrics. – 2013. – # 15-10-9. – pp. 49-51. – geo; abs.: geo., eng.
The aim of the study
was to investigate function of thyroid glands as well as cellular and
humoral immune system in patients with Euthyroid goiter. The investigation
was carried out on 60 patients with Euthyroid goiter who underwent
Ultrasonography of the thyroid glands, who also were studied on T- lymphocytes
and its subpopulations CD3, CD4, CD8, the percentage levels of B
lymphocytes, Ig G, Ig A, Ig M, testimonies in serum of blood, concentration
of thyroid hormones T4 and T3. The results show that, the cell’s immune
system damages more heavier then hummor immune status during Euthyroid goiter.
There was detected dramatic decrease of CD3 and CD8 lymphocytes, and
increase of levels of B lymphocytes, Ig G, Ig A, Ig M. Changes in
Immune system are accompanied by decrease of thyroid hormones T4 and
T3 level in serum of blood. Based on our study we can conclude that studding
Immune system is important in patients with thyroid gland pathology, as
well as studying thyroid gland hormones T4 and T3 in the patients with
autoimmune diseases. Tab. 1, Ref. 11.
Auth.
13.C13.37. New steps in critical care
medicine - the plasma eradiation. /Z. Kheladze,
S. Jaiani, B. Tsutskiridze, N. Kvitsiani, G. Chakhunashvili, D.
Chakhunashvili/. Social, Ecological & Clinical Pediatrics.
– 2013. – #15-10-9. – pp. 70-74. – geo; abs.: geo., eng.
The new prognostic-analogue
scale of rating the bedsores of the critically ill patients was
elaborated by authors. 6 most important prognostic criterions were
used, by which the patients with the bedsore wounds were evaluated. The
new scale aids in defining the general picture of the bedsore and rate
the bedsores not only by its’ stages, but also with determining localization,
character, depth, area and the additional factors that favor the development
of the bedsores. The above mentioned gives the possibility to determine
the preparation criterions for the surgical operations, to ascertain
the exact localization of the bedsore. The achieved results give
the opportunity to recommend using of this scale to determine the necessity
and readiness of the surgical treatment of the bedsore wound, for timely
correction and prognosis of the treatment course. In this article,
the authors, based on the treating experience of the critically ill
103 patients with bedsore wounds, offer the new method of treatment,
which is based on using the plasma eradiation. The complex treatment
of the above mentioned category of patients includes treating and
irradiating the surface of the wound with the plasma flow, which significantly
improves the results of treatment, lowers the numbers of complications
and shortens the general dates of treatment. Achieved results, give us
the possibility to widely recommend this method for treating the patients
with bedsore complications. Ref. 11.
Auth.
13.C13.38. Treating surgical
sepsis. /S. Jaiani, B. Tsutskiridze,
D. Chakhunashvili, G. Chakhunashvili, N.
Kvitsiani /. Social, Ecological & Clinical Pediatrics. – 2013.
– # 15-10-9. – pp. 78-82. – geo; abs.: geo., eng.
The treatment and
diagnostics of purulent-septic diseases is one of the most unsolved
and tough problems of surgery. Its’ actuality is related to the spreading
of the purulent complications, which caused the numbers of the surgeries
and the antibioticoresistent microflora to increase, as well as
the dysfunctions of the patients’ imunobiological reactions. The authors
offer using the plasma-surgical device, which gives the opportunity
to hasten the cicatrization dates of the wound using its’ positive effects
such as thermal effect of the plasma flow and the ultraviole and ozone
components. The proposed plasma method of surgery makes it possible
to improve the treating effect of the patients with purulent infection
and the positive results were achieved even at the early stages of using
this method. The achieved results gives us the possibility to recommend
using this method for treating the patients with the above mentioned
complications. Tab. 2, Ref. 5.
Auth.
13.C13.39. Immunological testimonies
among the children with Bronchopneumonia diseases associated with thymomegalia
disease treated with apihepati. /G. Chakhunashvili, N. Topuridze,
The aim of our
trail research the immune system among the children of early age
with bronchopneumonia. We studied T- lymphocytes and its subpopulations
CD3, CD4, CD8, antibodies. The percentage levels of B lymphocytes,
The Ig G, Ig A, Ig M, testimonies in serum of blood. The aim of our theme is
the study the cell and hummoral immune system among the children of early
age. Given results show us that cell immune system is more damaged during
bronchopneumonia. We used immune modulating – apihepati. The results
showed that Apihepati combined with basic treatment significantly enhances
cellular as well as hummoral Immune status of the patients with bronchopneumonia
diseases. Tab. 1, Ref. 9.
Auth.
13.C13.40. Some peculiarities of different
traits in monozygotic twins. /D. Tskhomelidze, M. Abisonashvili, B. Rukhadze, D. Chakhunashvili,
V. Ozashvili/. Social, Ecological & Clinical Pediatrics. – 2013.
– # 15-10-9. – pp. 89-90. – geo; abs.: geo., eng.
The aim of our research
was to find the differences between single monozygotic twins by different
signs, for example weight at birth, height, form of head, nose, ear,
length of face, color of skin, developing birth mark on the body and so
on. At the same time we established one strange rule for monozygotic
twins: The first one (who was born first) more often begins walking earlier
compared to the second one and the same process was going on with first
teeth appearing. To consider problems of epigenetics and genomic
imprinting in future we have to find some interesting exceptions: 1 )
The single monozygotic twin(girl) with an undeveloped lachrymal
gland was located in the epigastric area of the body and it was inherited
to daughter from father. 2) We established that some single twins are
different from each other by length of face(maximum in our case was- 6
mm) and the mother of these twins can distinguish between them by this
sign. But at the same time she is unable to catch the difference between
the other monozygotic twins. Fig. 2, Ref. 5.
Auth.
13.C13.41. Use of plastic materials in
surgical repair of anal fistulae. /T. Abuladze, D.
Mzhavanadze, K. Shapatava/. Actual Problems of Pathology, Therapy and Medical
Rehabilitation. – 2014. – pp. 14-20. – geo.; abs.: geo., eng., rus.
Surgical treatment of
complex anal fistulae should be primarily directed at preventing postoperative
fecal incontinence. We have introduced the fourth variant of plastic
surgery, which utilizes autotransplantation (fascia lata femoris), explantation
(synthetic polymeric plates), or medical glues. The procedure was performed on
258 subjects. The plastic repair of anal fistulae was directed at hermetization
of the perineally resected fistula stump and transanal repair of the internal
channel with the full preservation of the sphincter function. The results of
the treatment were compared with the control group of 281 subjects. The rate of
recurrence in the experimental group, when compared to the control group, was
decreased from 9.3±1.7% to 5.4±1.4%. No anal insufficiency was observed in the
experimental group, while its rate in the control group was 9.6±1.8%. Ref. 5
Auth.
13.C13.42. Substantiation of the treatment
expediency of patients with chronic nonspecific pulmonary diseases in
conditions of micro-climate of karst cave. /I. Tarkhan-Mouravi/. Actual Problems of Pathology,
Therapy and Medical Rehabilitation. – 2014. – pp. 21-26. – geo.; abs.: geo., eng., rus.
It has been found
that the course of speleotherapy in the conditions of karst cave causes the activation
of metabolism in hypothalamic cells and the increase of secretory activity of
the pituitary cells both in patients and animals with chronic nonspecific
bronchopulmonary inflammatory process, which, in its turn, leads to the
increase of cortisol production in fascicular zone of adrenal cortex. This was
manifested in the increase of cortisol content in blood plasma and involved the
attenuation (up to the disappearance) of bronchopulmonary inflammatory process
and sensibilization of the organism, the improvement of respiration, as well as
immunological and clinical parameters. Ref. 4.
Auth.
13.C13.43. Experimental investigation of the
influence of Borjomi district village Akhaldaba borehole mineral water baths on
the microstructure of skin and some organs. /
The investigation of the
influence of Borjomi district village Akhaldaba borehole mineral water baths on
the organism was conducted on male white rats in order to evaluate the
influence of weakly mineralized (M-0.64) silica-acid, boric,
carbonate-sulphate-sodium mineral water on the histological structure of skin,
esophagus, stomach, duodenum, liver and the kidney. The experiments were
conducted on 20 male white mongrel rats. 10 experimental rats were taking the
mineral baths (Ò=40±30C) for 60 minutes every day during three weeks; at the
same time 10 animals of control group were taking the baths of tap water. All
animals were attempted to breed after experiment; specimen analysis and taking
of microphotographs was performed in microscope Ergeval-MF. The data obtained revealed that three-week application of
mineral water baths doesn’t lead to a change in macro- and microstructure of
esophagus, stomach, duodenum, liver and the kidney of rats; and in the skin
causes the intensification of natural current processes (epidermis keratinization,
desquamation, glands maturation) and promotes the renovation of skin. So, the
data obtained allow us to make the conclusion that this mineral water baths
have no effect on the internal organs and can be used in practice. Ref. 3.
Auth.
13.C13.44. Use of tea in medicine (review of
literature). /N. Kakulia/. Actual Problems of Pathology, Therapy
and Medical Rehabilitation. – 2014.
– pp. 34-39. – geo.; abs.: geo., eng., rus.
Peroral drinking of
green tea has a normalizing influence on atherosclerosis, some forms of cancer,
inflammatory diseases of intestines, diabetes mellitus and liver pathologies;
intake of tea lowers cholesterol content in blood and promotes the weight loss
in humans. Ref. 4.
Auth.
13.C13.45.
Influence of medical rehabilitation using karipazim electrophoresis on patients
with post-discectomy syndrome. /N. Saakashvili, Z. Kemoklidze, I. Tarkhan-Mouravi, N. Kakulia, M.
Tabidze, I. Kvinikadze, N. Kvinikadze, N. Gurgenidze/. Actual Problems of Pathology, Therapy and Medical Rehabilitation. –
2014. – pp. 40-53. – geo.; abs.: geo., eng., rus.
Thirty-two patients
with post-discectomy syndrome were examined. All patients developed
post-discectomy syndrome after surgical intervention on the disc between III
and IV lumbar vertebrae. It was found that medical rehabilitation using karipazim
causes weakening (up to even disappearance) of inflammatory process in the operated
focus in patients with post-discectomy syndrome. The weakening of the
inflammatory process in the operated intervertebral disc of patients with
post-discectomy syndrome caused normalization or tendency to normalization of
clinical and neurological condition, reduction in pain index and in severity
of depression and anxiety; it significantly improved the quality of life. It
was found that medical rehabilitation using karipazim electrophoresis is an
effective method for the rehabilitation of patients with post-discectomy
syndrome. Tab. 6, Ref. 18.
Auth.
13.C13.46. Algorithm of physical
rehabilitation in patients with shoulder impingement syndrome. /I. Jankarashvili, M. Rukhadze/. Actual Problems of Pathology, Therapy
and Medical Rehabilitation. – 2014.
– pp. 54-63. – geo.; abs.: geo., eng., rus.
The aim of this work
was to establish the effectiveness of algorithm of methods of complex
physical rehabilitation in patients with shoulder impingement syndrome. Total
of 16 patients of both genders in age of 59-71 years were under the
observation. Clinical examinations and diagnostic ultrasonography of shoulder
joint before and after rehabilitation and X-Ray investigation were held. The
following algorithm of physical methods of rehabilitation was applied:
electrophoresis with proteolytic enzyme karipazim - 20-25 procedures; from the
7-8 procedures of electrophoresis - phonophoresis with voltaren and chondroxide
-10-15 procedures; from the 7-8 procedures of phonophoresis special exercises
for shoulder muscles were added. After carrying out the specified rehabilitation
complex a positive rehabilitation effect after first course was obtained in 13
patients. In two cases it was necessary to carry out the second course of
rehabilitation. In one case slightly positive effect of rehabilitation was
reached. Thus, on the basis of carried out research high therapeutic effect of
algorithm of physical rehabilitation developed by us was established. Algorithm
is based on the complex impact of physical methods. It includes consecutive
application of resorptional, anti-inflammatory, chondral protecting and shoulder
muscles enhancing impacts. Tab. 2, Ref. 13.
Auth.
13.C13.47. Health state of refugee children
from Abkhazia. /G. Chakhunashvili, N. Manjavidze,
There was
held an investigation of the health status of 6-15 years old 800 refugee children from Abkhazia. This investigation
suggested that 43.5% of the children had somatic and psycho-emotional dysfunctions.
Those having psycho-emotional dysfunctions mostly manifested
psycho-neurological dysfunctions, too. Fig. 2, Ref. 6.
Auth.
13.C13.48. Content of light aeroions in some
health resort And tourist zones in Borjomi and
The results of
investigation of light aeroions concentration in some health resort and tourism
zones in Borjomi and
Auth.
13.C13.49. Interconnection between
aggression and pain (experimental
study on rats). /G. Bekaia/. Actual Problems of Pathology, Therapy
and Medical Rehabilitation. – 2014.
– pp. 75-79. – rus.; abs.: geo., eng., rus.
On the white
naturally aggressive and nonaggressive rats, differentiated in accordance with
Karli method, the tests on passive avoidance conditional reactions were
performed in conditions of chronic experiments. It was confirmed that the pain
threshold in naturally aggressive rats is significantly higher (by 33%) in
comparison with naturally nonaggressive rats. It has been also established that
emotional reaction of fear in naturally aggressive animals is maintained
significantly longer (45±6.5 days) as compared to
nonaggressive ones (24 ±5.2 days). According to the
literature data the decrease of serotonin level in the brain of rats is
observed at the development of aggression and at the same time the decrease of
serotonin concentration in the brain is related to the improvement of memory
(learning). Ref. 9.
Auth.
13.C13.50. Complex rehabilitative therapy of
inflammatory processes in periodontium with the use of low-intensity laser and
imudon. /T. Bostanjian,
The use of complex
rehabilitation therapy with low-intensity laser irradiation and imudon
significantly increases the effectiveness of treatment of inflammatory
processes in the periodontium, which develops after dental implantation
surgery. Fig. 1, Tab. 2, Ref. 15.
Auth.
13.C13.51. Studies of the bioclimatic
resources of
The analysis of the
joint operations of the
Auth.
13.C13.52. Diagnostic issues of vestibular
neuritis. /S. Japaridze, T. Khechinashvili; R. Talishinski, M.
Lomaia;
Growing
industry and various social-economic factors have led to global climate change
and rise of different infections, affecting organs and parts of the human organism,
including disability. In this respect a special attention is focused on inner
ear disorders, particularly vestibular neuritis, the diagnosis of which is
often impeded leading to delayed initiation of treatment. Hence the present
study aims at specification of some indices obtained by means of
vestibulometric method. Total of 23 consecutive patients, aged 18-50 (12
males and 10 females) have been evaluated. All of them complained of systemic
dizziness, spinning sensation of themselves and surrounding objects in a
single direction, remaining for the whole period of illness, besides they
suffered from unsteady pacing, sudden blackouts, nausea and vomiting. Spinning
direction commonly concurred with the direction of slow phase of spontaneous
nystagmus. The onset of the disease in the majority of cases was associated
with the recent episodes of viral grippe and in fewer instances with other
infections or stressful states. Only in 2 occurrences it was not related to any
other factors. The assessment of the following parameters, like rate, amplitude
and speed of slow phase (SW) of spontaneous, kaloric and ophtokinetic nystagmus
was performed employing computed electronystagmography (Toennics
Electronystagmography Computer System (2002). Labyrinth colorization was
carried out using J. Clausen (1982) method applying certain amount of water
varying in temperature regimes (300C-440C). As a result
of the conducted study, it appeared that the incidence rate of the disease was
significantly higher in transitional seasons (autumn, spring) (P<0.05). In all
the instances a vestibular neuronitis was marked with lesion of a single
labyrinth. Rate and speed value of the SW of spontaneous nystagmus in case of
closed eyes was marked with increase of the first parameter and decrease of the
other one. Sponteneous nystagmus was revealed in nearly all the cases observed
and only in one it was not identified at all. Comparing the rate, amplitude
and speed of the SW of ophtokinetic nystagmus, in healthy and diseased
labyrinths, it appeared that in the latter case those parameters were
characterized by significant variability, appropriate to peripheral lesion of
the vestibular apparatus (P<0.05, P<0.01 and P<0.05). The
investigation of the reflectoral nystagmus demonstrated diminished vestibular
irritability or its complete absence in the affected labyrinth compared to the
healthy one (P<0.05). In conclusion, it should be noted that the findings,
obtained as a result of the conducted subjective and objective investigation,
vividly indicate the presence of vestibular nystagmus. Regarding the elicited
data, it enables the medical doctors to reach differential diagnosis, to
distinguish the VN from other vestibulopathies in order to initiate appropriate
and prompt treatment. Ref. 4.
Auth.
13.C13.53. The influence of spleenectomy on young rat’s growth. /N. Didebulidze, I. Tarkhan-Mouravi, N. Gordadze, M. Kordzaia, L.
Metreveli, I. Sikharulidze, M. Kakabadze/. Actual Problems of Pathology,
Therapy and Medical Rehabilitation. – 2014. – pp. 101-107. – rus.; abs.: geo., eng., rus.
The experiments were conducted on 80 male white mongrel rats with 80-100
g body mass. 4 groups of animals were created. In the first basic
group (n=20) spleenectomy was held, in two control groups - 1/3 liver resection
(second group, n=20); in the third - false operation (n=20); and the fourth
group (n=20) - consisted of intact animals. The main goal of this investigation
was the evaluation of correlation between changes in adenohypophysis
somatotropocits and young rats growth speed after spleenectomy. All animals
were weighted every day, and slaughtered with Ether narcosis by decapitation
after 1, 3, 7, 14, 30, 60, 182 days. The pronounced changes in haemolymphatic
nodes were observed on the II month after spleenectomy. The nodes were
bean-shaped, with size 6.5±1.1 mm. On the specimens revealed realizes
compensatory function. Maximal growth speed of spleenectomized rats was
revealed on the sixth week after operation (Ñ= 0.03), and in control groups - on the second, or
third week (Ñ=0.02). At the end of the experiment
the growth of spleenectomized rats mass (282.2 g), and accelerated growth of femoral bones
were revealed. Femoral bones of spleenectomized rats were 3.0±0.49 mm longer
than in II and IV control groups and 2.8±0.38 mm. Longer as compared to false
operated rats. The concentration of STH in blood serum of spleenectomized rats correlated with their growth
speed. STH concentration reduction over postoperation eighth week up to control
indices was accompanied by the decrease of growth speed. Ref. 4.
Auth.
13.C13.54. Complex therapy of inflammatory
processes in periodontium with the use of low-intensity laser and imudon. /I. Kechin, R. Irzaev, A. Chebykin, T. Bostanjian/. Actual Problems of
Pathology, Therapy and Medical Rehabilitation. – 2014. – pp. 108-110. – rus.; abs.: geo., eng., rus.
Combined therapy with
the use of low-intensity laser irradiation and imudon significantly
accelerates the improvement of various indices in patients with gingivitis and
periodontitis. Ref. 3.
Auth.
13.C13.55. Àbout the mechanism of impact of electromagnetic
weather on human health. /E. Sakvarelidze, Z. Sharadze/.
Actual Problems of Pathology, Therapy and Medical Rehabilitation. – 2014. – pp. 111-118. – rus.; abs.: geo., eng., rus.
The problem of the
influence of electromagnetic weather on human health is considered in this
work. Sun-Earth connection is most noticeably seen in the days of the solar
activity, when the explosions on the Sun are accompanied by magnetic storms
during which biotropic effects are manifested that adversely affect the human
body. Numerous data confirm the negative effect of solar activity, particularly
on the cardiovascular and nervous systems of humans. However, to date, the main
problems are biotropic factors of solar activity and the establishment of the
mechanism of their impact on biological objects. The article describes the
mechanism of the impact of perturbations of the magnetic field on the human
body. This impact can be through an information mechanism when disturbed
synchronous communication between exogenous "leading" natural rhythms
and endogenous biorhythms, causing the desynchronization of endogenous
biological rhythms, and, as a consequence, the deterioration of health.
Matching the main harmonic frequencies of infralow electromagnetic fields
generated by separate systems of the human body with the values of the resonant
frequencies of the natural resonators of Schumann and Alven and short-periodic
magnetic disturbances was the basis to explain the negative effects of magnetic
storms on health information influence of infralow-frequency weak natural
fields. Ref. 7.
Auth.
13.C13.56.
Urgent medical rehabilitation of victims of traffic
emergency situations. /A.
Ter-Ovakimian/. Actual Problems of Pathology, Therapy and Medical
Rehabilitation. – 2014. – pp. 119-122. – rus.; abs.: geo., eng., rus.
Increasing efficiency
and quality of rendering emergency medical care to victims of traffic accidents
and crashes requires to solve such issues, as: a) Ensuring interaction of
territorial accident medical service with emergency services of the Ministry of
Transport and relevant departments involved in eliminating the consequences of
emergency situations; b) Solving issues related to the provision of
information, preparation of medical and diagnostic standards for emergency
medical assistance to victims with polytrauma; c) Providing emergency
prehospital medical care to victims with polytrauma, including conducting
medical sorting with evacuation and transport provision; d) Allocating a number
of city public health hospitals and ensuring they are prepared to provide
qualified and specialized care according to the type and nature of injuries
received; e) Carrying out complex assessment of the severity of traumatic
injuries, and determining the place of traffic injuries in the structure of
crisis and emergency situations on transport; f) Studying the structure of
traffic injuries and their medical consequences with the process analysis of
emergency medical support in traffic accidents; g) Development and
implementation of medical and diagnostic algorithms in providing medical care
with rehabilitation of patients with polytrauma in the prehospital and hospital
stages. Ref. 6.
Auth.
13.C13.57. Importance of mechanism of
respiratory tract influence at the rehabilitation stage in patients diseased
with pulmonary heart. /G. Eliava, A. Isakadze, T.
Tsintsadze, M. Tabidze, T. Buañhidze, L. Topuria/.
Actual Problems of Pathology, Therapy and Medical Rehabilitation. – 2014. – pp. 123-125. – rus.; abs.: geo., eng., rus.
Basic pathogenetic
factors of evolution of pulmonary heart are elevated pressure in the system of
pulmonary artery and hypoxemia. Alveolar hypoxia arises during hypoventilation
of central, bronchopulmonary or thoraco-diaphragmal origin. At the
rehabilitation stage it is necessary to eliminate inadequate nasal breathing or
its full absence since it promotes alveolar hypoventilation, heart
hyperfunction that ultimately can become the risk-factor of pulmonary heart
evolution. Ref. 3.
Auth.
13.C13.58. The role of reflectory influences
in the activity of sino-atrial node. /N. Saakashvili, G.
Eliava, T. Tsintsadze, M. Tabidze, L. Topuria, T. Buachidze/. Actual Problems
of Pathology, Therapy and Medical Rehabilitation. – 2014. – pp. 125-129. – rus.; abs.: geo., eng., rus.
The method of
mathematical analysis of heart rhythm has been used for assessment of the
condition of body regulatory systems, which gives us an opportunity to estimate
the ratio between activity of sympathetic and parasympathetic parts of
vegetative nervous system, condition of humoral channel of regulation and of
subcortical centres, while sino-atrial node is considered to be the indicator
of humoral neural influences. The experimental study carried out showed that
mouth breathing, in comparison with nasal breathing, caused an acute
respiratory sinus arrhythmia in the experimental animals. The dynamics of
statistical factors of heart rhythm points at the dominance of parasympathetic
nervous system’s activity that is explained by the modification in proportion
of afferent signaling from different reflexogenic zones of respiratory
passages. Ref. 6.
Auth.
13.C13.59. Interhemispheric asymmetry: psychophysiologic aspects. /I. Sekoyan/. Actual Problems of Pathology, Therapy and Medical
Rehabilitation. – 2014. – pp. 130-142. – rus.; abs.: geo., eng., rus.
The aim of research
is to study the association of latent left-handedness signs and emotional-
personal sphere characteristics with analysis of their transformation in age and
gender aspects. 408 respondents have participated in project: 157 men (38.5%)
and 251 women (61.5%) distributed in three groups according to age: I - 234
respondents, average age (̱SD) 22.7±2.8
years, II - 81 respondents (38.7±6.2), III - 93 respondents (57.4±4.4). Psychometric examination has
been carried out by standardized tests. The signs of latent left-handedness are
revealed in 82.4% of respondents. The number of persons having one sign makes
26.0 %, with two signs - 30.4%, three signs - 14.0%, four signs - 12.0%. In
community sample and gender aspect there is revealed the tendency of
progressing with the years increase in number of persons both without signs of
latent left-handedness and with a single sign. Progressing reduction in number
of respondents with two and more signs of latent left-handedness is marked. In
community sample 78.6 % of respondents have overcome test for sincerity
according to Eysenck Personality Inventory test (ÅÐI1) scale, the rest 87 persons have been excluded
from the further examination. According to testing results (ÅÐI2 scale) there has
been marked with the years an increase in number of intraverts and reduction in
number of extraverts, meanwhile parameter of emotional stability (ÅÐI3 scale) in age and
gender aspect does not practically change. With increase in age there occurs
reduction in number of cholerics, increase in number of phlegmatics and melancholics,
thus, the number of sanguinics among
men with the years does not change, but it is progressively reduced among
women. The obtained results of respondents by Rotter I-E testify about an
increase with the years in number of persons with external personal type and
reduction in number of persons with internal personal type. Associated triad:
alexithymia (on Toronto Alexithymia
Scale) anxiety (on
Staite-Trait Anxiety Inventory) depression (on Âåñk Depression Inventory), in the greater percent of
cases is revealed in intraverts and externals. With the help of plural linear
regress model, Spearman and
Auth.
13.C13.60. Interconnection between assisted
reproductive technologies, pregnancy complications and risk of birth defects. /V. Grabar/. Georgian Medical News. – 2014. – # 2(227). – pp. 7-14. – rus.; abs.: geo.,
eng., rus.
The aim of the
article was to investigate the relationship between pregnancy complications,
infertility and assisted reproductive technologies (ART). The study was
conducted on 1331 couples with complicated reproductive history. It is found
that miscarriage and other complications of pregnancy depend rather on the
etiopathogenesis of infertility than on the technique of ART. The highest
frequency of complications of pregnancy was diagnosed in women with endocrine
disorders. In case of congenital malformations in the fetus the frequency of
birth defects was 3.6% after in vitro fertilization (IVF) and 1.8% in case of
spontaneous pregnancy. It was found an increased risk of birth defects in
singleton boys conceived by IVF. Tab. 2, Ref. 15.
Auth.
13.C13.61. The influence of C-taurine
antioxidant complex on biochemical blood parameters in the process of treatment
of patients with diabetes mellitus of type Ii with nonproliferative diabetic
retinopathy. /S. Lekishvili/. Georgian Medical News. – 2014. – # 2(227). – pp. 14-20. – rus.; abs.: geo.,
eng., rus.
The purpose of this
investigation is to study the effect of C- taurine complex of antioxidants on
blood biochemical parameters in the process of treatment of patients with diabetes
mellitus of type II with NPDR. 68 patients (136 eyes) were enrolled in the
study. The monitoring of the patient lasted for 3 months. The character of
changes of the basic visual functions has been examined. The patients were
divided into 2 groups (main and control). Treatment of patients with main group
conducted antioxidant complex Taurine + Vitamin C for 42 days. namely. Thus, we
have revealed antioxidant activity of the combination of taurine and vitamin C
with positive effect on the indexes of carbohydrate, lipid metabolism and
hepatoprotective characteristics in patients with diabetes mellitus type II
with NPDR. Taking into consideration the peculiarities of correlation
relationships between functional, clinical and biochemical parameters and the
results of experimental studies on animal it is acceptable to use Taurine
complex + Vitamin C as part of conservative treatment of patients with diabetes
mellitus type II with NPDR. Tab. 8, Ref. 6.
Auth.
13.C13.62. The results of the surgical treatment for total talus
dislocation. /G. Gabunia/. Georgian Medical News.–2014.– # 2(227). – pp. 20-23. – rus.; abs.: geo., eng., rus.
The purpose of the
research was to study the results of surgical treatment for rare and severe
injury, such as the total talus dislocation and determine the causes of
complications. The study was based on findings from dynamic observations of 15
patients with this type of musculoskeletal pathology, who underwent surgical
treatment in three multi-profile medical facilities of
Auth.
13.C13.63. Early primary ostheosynthesis in
polytrauma of the locomotor apparatus. /G. Gabunia/.
Georgian Medical News. – 2014. – #
2(227). – pp. 24-28. – rus.; abs.: geo., eng., rus.
The goal of the
research was to study the local and general complications of the osteosynthesis
of long tubular bones on different stages of the traumatic disease in patients
affected by polytrauma as well as to determine the priority of early and
delayed osteosynthesis. The research was based on the data obtained from
dynamic follow-up of 187 patients with polytrauma, including several deceased,
who had been treated in three large clinics
of
Auth.
13.C13.64. Morphological peculiarities of
esophageal mucosa in patients with gastroesophageal reflux disease and type ii
diabetes mellitus. /G. Fadeenko, E. Frolovà-Romaniuk, V. Galchinskaya/. Georgian Medical News. – 2014. – # 2(227). – pp. 28-31. – rus.; abs.: geo.,
eng., rus.
The aim of the
article was to study morphological features of esophageal mucosa in patients
with type II diabetes mellitus and gastroesophageal reflux disease (GERD). The
research was conducted on 67 patients with type II diabetes mellitus and GERD
and 50 non-diabetic patients with GERD. The histological study of the mucous
membrane of the distal esophagus in patients with combined pathology detected
parakeratosis and acanthosis, outflows edema and bundles epithelium, surfacial
hyperplasia, infiltration of neutrophils and vascular ectasia. The obtained
results demonstrate that type II diabetes causes change in symptoms, endoscopic
and histologic manifestations of GERD. It is concluded about the importance to
develop and improve diagnostic tools for the detection of GERD with type II
diabetes by means of invasive and non-invasive diagnostic techniques. Tab. 1,
Ref. 8.
Auth.
13.C13.65. Effect of vitamin D correction on
insulin resistance in patients with coronary heart disease and metabolic
syndrome. /M. Hordina, V. Orlovsky/. Georgian Medical News. – 2014. – # 2(227). – pp. 32-36. – rus.; abs.: geo.,
eng., rus.
The aim of the
article was to study vitamin D level, carbohydrate metabolism and insulin
resistance in 135 patients with ischemic heart disease, stable angina FC
II-III. The investigation detected hypovitaminosis D among 91.9 % of patients.
All patients have been receiving 2000 IU of cholecalciferol per day for 6
months orally in addition to basic therapy. It was found that the correction of
hypovitaminosis D positively affects on patients with coronary artery diseases.
It is concluded that individuals with co-morbid course of coronary heart
disease and metabolic syndrome require treatment of hypovitaminosis D for an
extended period of time. Tab. 3, Ref. 13.
Auth.
13.C13.66. Predictors of cardiac arrhythmias
in patients with arterial hypertension during exercise stress testing. /M. Kolesnik, M. Sokolova/. Georgian Medical News. – 2014. – # 2(227). – pp. 37-42. – rus.; abs.: geo.,
eng., rus.
Arterial hypertension
is an important risk factor for atrial and ventricular arrhythmias. 203 male
patients were examined in order to identify predictors of cardiac arrhythmias
in patients with arterial hypertension during exercise stress testing. All
participants were studied by 24-hour ambulatory blood pressure monitoring,
transthoracic echocardiography, an ultrasound scan of the carotid arteries and
treadmill test. 47,3% of patients presented cardiac arrhythmias during exercise
stress testing. The left ventricular mass, diastolic function and carotid
intima–media thickness were found to be independent predictors of
exercise-induced arrhythmias. The use of the exercise stress testing may be
reasonable for additional risk stratification in hypertensive patients. Tab. 3,
Ref. 17.
Auth.
13.C13.67. The relationship between
socio-economic status and cardiovascular events. /Mahavir Senan, A. Petrosyan/. Georgian Medical News. – 2014. – # 2(227). – pp. 42-47. – eng.; abs.: geo.,
eng., rus.
The aim of the
article was to study the relation between socioeconomic factors and mortality
from CVS diseases. The study was performed among 346 native Indians (260 males
and 86 females), aged 41-54 years and employed by the Civil Service.
The study was carried out during 7 years. At 24 months of follow-up, 281 of 346
subjects (81.2%) had blood pressure progression. Subjects in the
highest category of education or income had a 16 and 11% lower risk
of cardiovascular events when compared with those in the lowest education
or income category, respectively. The study demonstrates that socioeconomic
status is a powerful and independent predictor of blood pressure
progression and cardiovascular event in initially healthy persons. In this
population, education was a more robust indicator of incident
hypertension than income. It was found that obese persons with primary
education did not have a higher risk of blood pressure progression or
cardiovascular event than their counterparts with high school education. Finally,
our findings indicate that even in this well-educated cohort,
socioeconomic status as measured by education and income remains an
important determinant of hypertension. Tab. 2, Ref. 23.
Auth.
13.C13.68. Assessing the need for a
protected living environment among severely mentally ill adults in the Republic
of Georgia. /N. Zavradashvili, N. Makhashvhili, M. Eliashvili,
K. Zurlo,
The purpose of this
study is to assess the need for a new mental health service called a Protected
Living Environment (PLE) in the
Auth.
13.C13.69. Adipocytes and macrophages
functional morphology in obese humans: correlation with plasma leptins level. /E. Giorgadze, L. Gogiashvili, Z. Tsagareli,
White adipose tissue
macrophages and both in peripheral blood simples obtained in biopsies from male
(n=14) and female (n=11) gluteal depots, were observes by light and electron
microscopic methods, in obese in patients with BMI (35,2±7,9 and 31,3±8,5) in
female and men, consequently. The data indicates on the positive correlation
between adipocytes death, macrophages local activation and leptins level in
obese individuals. Recent evidence indicates
the correlation between increased leptin prodaction level and adipocytes
necrotic foci in WAT, which is trigger lipid tissue persistans necrotic foci
and formation chronic inflammation response in obese individuals. Tab.
5, Ref. 15.
Auth.
13.C13.70. System and anthropological
analysis of psychology of loneliness of the people enduring social isolation
(on the example of prisoners in the prisons of east
This article contains
the material reflecting the results of the author’s theoretical analysis of the
loneliness phenomenon and an empirical study of its features in a particular
social group - the prisoners. The analysis focused from the point of
system-anthropological approach, actively developed by a group of Siberian
scientists, considering the whole loneliness and loneliness of people who are
hold at forced social isolation as a kind of integrity loss. The study
accounted for age and gender differences in this population group. The research
was conducted in the East Kazakhstan region of the
Auth.
13.C13.71.
Progesterone – regulator of T-lymphocytes cytotoxicity. /A. Gokhelashvili, N. Gogebashvili, I. Datunashvili,
M. Machavariani, M. Enukidze, T. Sanikidze/. Georgian
Medical News. – 2014. – # 2(227). – pp. 81-85. – rus.; abs.: geo.,
eng., rus.
Progesterone plays
important the role in the regulation of the immune system during pregnancy. We
examined the effect of progesterone on the cytotoxic activity of T-lymphocytes
in a model system Jurkat cells. Jurkat cells were stimulated with 50 μg/ml of phytohemaglutinin A (PHA) at 370C for 5 minutes. Then, PHA was
removed by centrifugation, the cells were washed and cultured for 24 hours
alone or with progesterone (added to the incubation medium of Jurkat cells at a
concentration of 0.07 and 0.7 μl. Determined value
of The parameters of mitochondrial membrane potential (by flow cytometry) and
parameters of mitochondrial oxidative metabolism (the rate of generation of
superoxide and peroxide radicals and activity of mitochondrial superoxide
dismutase, catalase, glutatinperoxidase, the degree of nitrosylation of mitochondrial
electron-transport proteins (by method of electron paramagnetic resonance and
spectrophotometry) were determined. It was identified the lowering effect of
high dose of progesterone (0.7μl) on the value of
mitochondrial membrane potential (balancing percentage of cells with high and
low values of mitochondrial potential and decreased intensity of oxidative
stress in mitogen - activated Jurkat cells, which supports inhibition of their
proliferation and differentiation activity. Fig. 2, Tab. 2, Ref. 15.
Auth.
13.C13.72.
Restoration of jaw bone tissue defect using osteoplastic material. /T. Grdzelidze, A. Machavariani, G. Menabde, N.
Gvelesiani, I. Amiranashvili/. Georgian Medical News. – 2014. – # 2(227). – pp. 89-92. – eng.; abs.: geo.,
eng., rus.
The aim of the study
was to repair mandibular bone defect using BIO-OSS artificial bone
implantation. The experiment was conducted on 30 white laboratory rats. Defect
in the bone of lower jaw was created surgically. Animals were divided into 2
groups. 15 animals were allocated in control group. Another 15 animals were
allocated in the BIO-OSS treatment group. Control group: analysis revealed bone
defect in 6-month after modeling of bone defect. There was no pronounced
proliferation of connective tissue visible in the defect area. Treatment group:
In the samples of treated group, BIO-OSS bone mass formed basophilic fiber-like
structures. It was surrounded with the thin proliferative connective and granulation
tissues. Conclusions: proposed
technique of bone defect reconstruction is an effective and sustainable method
and can be recommended for wider use in clinical practice. Fig. 3, Ref. 10.
Auth.
13.C13.73. Impact of inherited thrombophilia
on the risk of recurrent venous thromboembolism onset in Georgian population. /N. Pirtskhelani, N. Kochiashvili, L. Makhaldiani, N. Pargalava, E.
Gaprindashvili, K. Kartvelishvili/. Georgian Medical News. –
2014. – # 2(227). – pp. 93-97. – rus.; abs.: geo., eng.
Inherited
thrombophilia means a predisposition of an individual to thrombosis caused by
genetic disorders of homeostasis system. Purpose of the conducted study was to
establish the role of point mutations of prothrombin (PGM) - 20210G/A; Factor V
Leiden (FVL) - 1691G/A and methylenetetrahydrofolate reductase (MTHFR) - 677C/T
genes, i.e. inherited thrombophilia in the pathogenesis of primary and
recurrent venous thromboembolism in patients of the Georgian population. The
above mentioned mutations were detected by PCR and single nucleotide primer
extension reaction, followed by Enzyme Linked Immuno-Sorbent Assay (ELISA) in
93 patients with venous thromboembolism, out of which: 56 patients were
diagnosed with unprovoked, primary thromboembolism confirmed by objective
studies and 37 patients were diagnosed with recurrent thromboembolism.
According to statistical analysis of the results, incidence of FVL mutation in
the group of patients with recurrent thrombosis was significantly higher
compared to patients with primary thrombosis - respectively 0.21 and
0.44 (p=0.0164<0.05). It should also be mentioned that homozygous carriage
of FVL mutation was confirmed only with patients having recurrent thrombosis.
Similar tendency was observed during study of prothrombin gene; however the
difference was not statistically significant. Similar tendencies were not
observed in case of homozygous carriage of MTHFR gene C677T mutation. Double
and triple heterozygous / homozygous carriage of studied mutations (total of 20
cases) was observed in patients of both groups. Distribution of these genotypes
in the recurrent thrombosis group was higher compared to patients with primary
thrombosis - respectively 27% and 17.9%. Herewith, it should be mentioned that
the patients with primary thrombosis were much younger than those with
recurrent thrombosis and their age did not exceed 50 years. According to the
results obtained by us, it is possible to consider Leiden mutation, especially
its homozygous form and double/triple heterozygous/homozygous carriage of the
studied mutations as an independent risk factor of development of recurrent
thrombosis in the Georgian population and prolong anticoagulation therapy in
patients of similar genotype as much as possible to prevent recurrent
thrombosis and related complications. Tab.2, Ref. 13.
Auth.
13.C13.74. The role of point mutations in
the genes, predisposing inherited thrombophilia in the pathogeneses of proximal
and distal deep vein thrombosis in Georgian population. /N. Pirtskhelani, N. Kochiashvili,
L. Makhaldiani, N. Pargalava, E. Gaprindashvili, K. Kartvelishvili/. Georgian
Medical News. – 2014. – # 2(227). – pp. 98-102. – eng.;
abs.: geo., eng., rus
Duration of treatment
of venous thromboembolism (VTE) and prevention of its recurrence represent
significant problems of contemporary medicine, as the basic method of treatment
– anticoagulation is frequently complicated by hemorrhage. Therefore, its
duration is strictly defined and depends on existence of risk factors related
to recurrence of thrombosis. Purpose of the conducted study was to establish
the role of point mutations of prothrombin (PHG) - 20210G/A; Factor V Leiden
(FVL) - 1691G/A and methylenetetrahydrofolate reductase (MTHFR) - 677C/T genes,
i.e. inherited thrombophilia in the pathogenesis of proximal and distal lower
extremity deep vein thrombosis in patients of the Georgian population, as in
case of proximal thrombosis there is a higher risk of recurrent thrombosis. The
above mutations were detected by PCR and single nucleotide primer extension
reaction, followed by Enzyme Linked Immuno-Sorbent Assay (ELISA) in 61 patients
with venous thromboembolism of various localizations, out of which: 49 patients
were diagnosed with unprovoked proximal thromboembolism confirmed by objective
studies and 12 patients were diagnosed with distal thromboembolism. The
difference between the groups was evaluated by F (Fisher) precise criterion.
According to statistical analysis of the results, incidence of FVL mutation in
the group of patients with proximal thrombosis was significantly higher
compared to patients with distal thrombosis 0.43 and 0.08 (p=0.0256),
respectively. Similar tendencies were observed in case of carriage of
prothrombin gene and MTHFR gene mutations, as their presence was higher in the
group of patients having proximal thrombosis than in patients with distal
thrombosis, however, this difference was not found to be statistically
significant. It should be particularly mentioned that double or triple
heterozygous or homozygous carriage of studied mutations with various options
was confirmed in 15 of 61 patients and the above genotypes were observed only
in the group of patients having proximal thrombosis. According to the results
obtained from this investigation, it is possible to consider inherited
thrombophilia, especially Leiden mutation and double or triple heterozygous and
homozygous carriage of studied mutations in the Georgian population as an independent
risk factor of development of proximal thrombosis, which on its part, represents
one of the risk factors of development of recurrent thrombosis and conduct
proper long-standing anticoagulation therapy and take secondary preventive
measures in patients of similar genotype to reduce the risk of recurrent
thrombosis. Tab. 2, Ref. 13.
Auth.
13.C13.75. Development and substantiation of
complex approach to determination of individual intolerance and
hypersensitivity to dental materials. /D. Grizodub/. Georgian Medical News. – 2014. – # 3 (228). – pp. 7-13.
– rus.; abs.: geo., eng., rus.
The aim of research
was to define the most simple, objective and affordable test for determination
of individual compatibility for dental materials before placement of prostheses
in the oral cavity. After series of provocative and laboratory tests it was found
that the most convenient is the muco-gingival test. Also found that absolutely
all materials, including ceramics, can cause individual intolerance with more
or less severe clinical symptoms. Tab. 5, Fig. 2, Ref. 11.
Auth.
13.C13.76. Effect of benign testicular mass
on fertility: an epidermoid cyst case. /A. Ürkmez,
Ö. Yüksel, A. Somay, A. Verit/. Georgian Medical News. – 2014. – # 3 (228). – pp. 14-17. – eng.;
abs.: geo., eng., rus.
The article discusses
the problem of epidermoid cysts - extremely rare but the most common benign
intratesticular tumors. The majority of non-palpable testicular lesions, discovered
by ultrasonography in a population of infertile men, are benign tumors. The
case of a young man who had incidentally diagnosed, during his infertility
evaluation, a right testicular mass which was pathologically reported as
epidermoid cyst after partial orchiectomy is presented. It was suggested that
benign testicular cysts may effect the normal parenchyma of testis even if the
normal histopathology. Thus, the excision of these benign lesions especially in
infertile population is recommended. Fig. 3, Ref. 11.
Auth.
13.C13.77. A rare entity of benign bladder
neoplasm: female lipoma. /S. Akan, Ö. Yüksel,
Although benign
bladder neoplasms constitute less than 5% of all bladder neoplasms, they should
be taken into consideration because they can be symptomatic, and have the risk
of confusing with other malignant neoplasms. Herein, we reported a 59-year-old
female patient consulted to our outpatient clinic with the incidents of
hematuria. During cystoscopic examination, a yellow-coloured mass lesion with
smooth contours on the right posterolateral wall of the bladder was observed.
Histopathological examination of the specimen demonstrated mature adipose
tissue contained within submucosal layer without bladder wall invasion. Bladder
lipomas are rarely seen pure benign masses which almost all reported ones were
men. We think that female cases should also be taken into consideration for
differential diagnosis presenting with hematuria. Fig. 3, Ref. 10.
Auth.
13.C13.78.
Application of sonography for evaluation of posterior circulation disorders. /M. Alpaidze, M. Janelidze/. Georgian
Medical News. – 2014. – # 3 (228). – pp. 20-28. – eng.; abs.: geo.,
eng., rus.
Posterior circulation
disorders (PCD) include a) vertebrobasilar insufficiency (VBI), which has a
wide clinical manifestation such as vestibulocerebellar syndrome, cephalalgia,
cochlear syndrome, vegetovascular dystonia, visual disturbances, “syndrome of
vertebral artery compression” etc, b) vertebrobasilar TIA and c) stroke. All of
them are caused by blood flow disturbances in vertebral (VA), basilar (BAS) and
posterior cerebral arteries (PCA). Aim - evaluation of role of extracranial
duplex-sonography (EDS), transcranial color-coded duplex-sonography (TCCD) and
rotational functional tests (RFT) in PCD. 88 patients (age range 18-62y) with PCD
and 20 healthy controls with relevant age range were examined using EDS, TCCD
and RFT with measurement of vertebral arteries (VA) diameter, mean flow
velocities (MFV) and pulsatility index (PI) in VA, basilar artery (BAS) and
posterior cerebral arteries (PCA). For statistical analysis SPSS software
(Version 11.5) was used. In 48 (54,5%) patients revealed unilateral narrowing
(less than 2.5 mm in diameter) and deformation of vertebral artery associated
with osteochondrosis or primary hypoplasia. In 11 (12,5%) patients revealed
bilateral narrowing (less than 2.8 mm in diameter) and deformation of vertebral
arteries. Ultrasound investigation showed a decrease of MFV (23±1.4cm/sec) in
the intracranial length of vertebral artery and an increase of PI (3,2 ±0,3
p=0,002) in the extracranial segments (V1- V3). In 52 cases (59%) revealed
decrease of MFV in BAS by 32.6±4.7% and in 41 cases (46.5%) decrease of MFV in
both PCA by 24.8±5.2% (P<0.002). In 21 cases (23.8%) revealed concurrent
development of vertebrogenic reflex vasoconstriction. In 18 patients (20.4%)
exposed only deformation of vertebral arteries with local increase of MFV and
normal values in intracranial segments. Rotational tests were positive in 42
(47.7%) patients and manifested high correlation with clinical data. EDS and
TCCD are important tools for estimation of high hemodynamic risk in patients
with PCD. Rotation induced vertebrobasilar ischemia with temporary impairment
of cerebral blood flow to the brainstem, thalamus, and occipital lobes predicts
possible posterior circulation TIA or stroke and helps with proper selection of
further treatment strategy. Fig. 3, Ref. 31.
Auth.
13.C13.79. Reversible cerebral
vasoconstriction syndrome and migraine: sonography study. /M. Alpaidze, M. Beridze/. Georgian
Medical News. – 2014. – # 3 (228). – pp. 28-36. – eng.; abs.: geo.,
eng., rus.
RCVS is characterized
by severe headaches with or without focal neurologic deficits and segmental
constriction of cerebral arteries that resolves within 3 months. The primary
clinical manifestation is recurrent sudden-onset and thunderclap headache.
Diagnosis requires cerebral or magnetic resonance angiography (MRA)
confirmation and ultrasound monitoring. Our purpose is to discover the
difference of ultrasound data between RCVS and migraine. 61 patients (age range
17-60y., 41-female, 20-male) underwent sonography examination using
Transcranial Dopplerography (TCD) and Transcranial Color-Coded Duplex
Sonography (TCCD) methods. In 29 patients MRA examinations were performed. Group
I- 27 patients with RCVS with typical acute-onset of severe headaches. Group
II-34 patients- migraine in anamnesis, with 1-2 attacks monthly, control group
-15 healthy persons. Ultrasound examinations were performed during 2 months
with time intervals of 1-20, 21-40, and 41-60 days. Markedly in migraine group
examinations were performed in interictal periods also. Group I-the mean
maximum (MM) V(CS)-77,8±14,7cm/sec, V(MCA) - 127,5±22.8cm/sec, V(ACA)
-115.7±18.4, V(BA)- 74.7±20.1. Lindegaard Index (LI) -3.1±0.5. MRA revealed
segmental cerebral artery vasoconstriction. The MCA was involved in 62.9%, the
ACA- in 51.8%, the PCA- in 37% and the BAS- in 40.7% of patients. Group II- the
MM V (CS)-72.8±12.5cm/sec, V (MCA)- 118,4±26.7cm/sec, V(ACA) -105.8±17.6, V(BA)-
74.5±18.1, averaged LI -2,9±0.7. In the majority (61.7%) of this group revealed
increased MM V in several cerebral arteries with different combination of
involving vessels. No correlation was found between incidence side of pain and
/or pain intensity. Both groups exceeded of controls – V (MCA) (63.2±9.5
cm/sec), LI (2.1±0.2), p<0.001) and revealed vasospasm. All data were
calculated by nonparametric Binomial test. Obtained data showed no significant
difference regarding the vasospasm degree between typical RCVS and migraine,
whereas revealed that vasospasm in migraine is more determined to posterior
circulation but in RCVS vasospasm has the more diffuse character. Despite the
extensive knowledge concerning RCVS and migraine, many uncertainties still exist
and further randomized controlled trials are needed for understanding the
underlying pathophysiology factors. Tab.2, Fig. 9, Ref. 34.
Auth.
13.C13.80. Mechanisms of formation and
progression of non-alcoholic fatty liver disease in type 2 diabetics. /N. Kravchun,
Currently, study of
the mechanisms of formation and progression of non-alcoholic fatty liver
disease (NAFLD) in the patients with type 2 diabetes mellitus (DM) is a topical
problem in endocrinology. Prognosis for the disease depends on NAFLD stage and
it determines the necessity to study the origin and mostly the progression in
NAFLD course. It will favour the enhancement of efficacy of the treatment for
this cohort of patients. The object of this
work was to study the mechanisms of formation of NAFLD phasic course in type 2
diabetics via determining the levels of lipid peroxidation (LPO),
8-isoprostaglandin as components of oxidative stress. LPO indices and liver functional activity parameters
(general cholesterol, high-density lipoproteids cholesterol, triglycerides, β-lipoproteids, very-low-density lipoproteids
cholesterol, atherogenicity coefficient, thymol test, alanine aminotransferase, aspartate aminotransferase) were determined in the examined
individuals. The carried research allowed,
that changes in biochemical parameters levels is connected with increasing of
diene conjugates (DC) activity and the carried correlation analysis of the
studied values proved this relevance. The subgroup of the patients with DC
levels of 200-400 nmol/l has no inflammatory alterations (cytolysis syndrome)
that gives evidence of steatosis phase. The group of patients with DC levels of
400-600 nmol/l demonstrated the stage of non-alcoholic steatohepatitis with the
most expressed shifts in functional liver condition. The greatest lipid, carbohydrate
metabolic changes were found in the subgroup of the patients with DC level of
600 nmol/l and more that gives evidence of fibrotic processes. Tab. 3, Ref. 13.
Auth.
13.C13.81. Structural and functional changes
of heart and vessels in patients with essential hypertension and type 2
diabetes. /A. Belovol, A. Shalimova, M. Kochueva/. Georgian Medical News. – 2014. – # 3 (228). – pp. 45-51.
– rus.; abs.: geo., eng., rus.
Comorbidity of
essential hypertension and type 2 diabetes is a serious problem connected with
early affection of target organs and further cardiovascular complications.
Pathogenetic mechanisms, determining the progress of essential hypertension,
insulin resistance and type 2 diabetes, mostly have mutual symptoms and lead to
the progression of disease. Many investigators consider cardiovascular
pathology to be disease which has free radical nature. Activation of free radical
oxidative process and endothelial dysfunction are recognized one of the most
important pathogenetic mechanisms of cardiovascular diseases. To investigate
structural and functional changes of heart and vessels, state of the pro- and
antioxidant status, levels of proinflammatory cytokines in patients with
essential hypertension and type 2 diabetes we have examined 102 patients with
essential hypertension stage II and type 2 diabetes in a moderate
condition. After the investigation it was discovered that changes of cardiohemodynamics
in patients with essential hypertension and type 2 diabetes are characterized
by the following aspects: systolic function of left ventricle is conserved,
concentric hypertrophy of left ventricle predominates and also there is
diastolic dysfunction similar to disordered relaxation. Changes of blood
vessel walls in the examined patients are shown by growing intima-media
thickness and pulse wave velocity in carotid artery and aorta and also by
dropping endothelium dependent vasodilation. The mentioned structural and functional
changes in heart and magistral vessels go together with growing levels of
cytokines, activation of pro-oxidant system with suppression of antioxidant
system, what is shown by correlation connections of different intention and direction.
Tab. 2, Ref. 19.
Auth.
13.C13.82. Angioprotectors in the treatment
of rosacea. /N.V. Tsiskarishvili, A. Katsitadze, Ts.
Tsiskarishvili, L. Tchitanava, N.I. Tsiskarishvili/. Georgian Medical News. – 2014. – # 3 (228). – pp. 51-54.
– rus.; abs.: geo., eng., rus.
Rosacea - a common
chronic inflammatory dermatosis (3-10% of all dermatoses) primarily affecting
the skin of face. Numerous methods for the treatment of rosacea are defined by
the diversity of etiologic and pathogenic factors of dermatosis, its stage and
clinical form. But a significant role in its development, most researchers relate
to vascular disturbances. It is suggested that vascular changes in this disease
are the product of two interrelated pathological processes: the disturbances in
integrity and tone of the vascular wall and disorganization of perivascular
connective tissue. The results of these processes are formation of a stable
dilatation of skin blood vessels clinically manifested by erythema and telangiectasia.
Based on foregoing, The aim of this study was evaluation of therapeutic
efficacy of Rutin Forte in complex treatment and prevention of rosacea. 30
patients with an erythematous stage of rosacea were under observation (20 women
and10 men) aged 25 to 50 years. The first group (15 patients) was treated by
the standard procedure (Antibiotics, systemic metronidazole, antihistamines,
traditional external therapy). Patients of the second group (15 people)
additionally received a Rutin Forte containing long-acting vitamin C, zinc and
selenium. The drug was administered at a dose of 2 capsule per day. Duration of
treatment - 2 to 3 months. Observation period after treatment were 12 months.
During this period we revealed a significant reduction of erythema, recurrence
of disease in the second group of patients was not observed, but in the group
of comparison recurrences were detected on 3rd month of follow up and the
degree of erythema reduction was significantly less. Thus, the study revealed
that Rutin Forte is an effective means for the treatment and prevention of the
torpid relapsing forms of rosacea on erythematous stage of dermatosis. Fig. 2, Ref. 11.
Auth.
13.C13.83. Analysis of spreading the
sexually transmitted disorders in
According statistical
data in
Auth.
13.C13.84. Contribution of leptin in the
development of insulin resistance in pregnant women with obesity. /K. Tarasenko/. Georgian Medical
News. – 2014. – # 3 (228). – pp. 59-63. – rus.; abs.: geo.,
eng., rus.
The aim of the
present study was to investigate contribution of leptin in the development of insulin
resistance in obese pregnant women depending on the obesity class as well as
its effect on the progression of pregnancy. 36 pregnant women of I and II
obesity classes and 21 pregnant women with normal body mass participated in the
study. Concentrations of insulin, leptin and C-reactive protein in blood serum
were measured with immunoenzymatic assays. Insulin resistance (IR) was
determined with the Caro index. Contribution of leptin to development of IR was
assessed with the ratio “leptin/Caro index”. An increase of leptin
concentration in blood serum was found in pregnant women with obesity compared
to healthy controls. Moreover, the ratio “leptin/Caro index” increased with IR
progression and reached maximum in the group with obesity class II, where it
was 5.8 times higher than in the control group. An increased frequency of
gestoses and placentary dysfunction were manifestations of weakening of
adaptive mechanisms of the organism associated with the IR progression and
increased role of leptin in its development. Therefore, activation of adipocyte
function through the increased leptin secretion and increased ratio
“leptin/Caro index” reflects the important role of leptin in pathogenesis of IR
in pregnant women with obesity. Tab.1, Ref. 30.
Auth.
13.C13.85. Leptospirosis in
The aim of the
article was to study epidemiological patterns of leptospirosis in
Auth.
13.C13.86. Mechanisms of development and
clinical endoscopic characteristics of HP-negative gastropathy in patients with
chronic heart failure. /O. Boiko/. Georgian Medical News. – 2014. – # 3 (228). – pp. 67-71.
– rus.; abs.: geo., eng., rus.
Hp-negative
gastropathies in chronic heart failure (CHF) are characterized with
polyethiologic polymorphic changes of gastric mucosa (GM). At the same time the
mechanisms of their development and peculiarities of clinical-endoscopic and
morphological manifestations are understudied. The linkages of clinical and
morphological changes of gastric mucosa with various factors, and, above all,
the factors involved in the development and progression of heart failure, are
needed to be studied fundamentally. Some of these factors are oxidative stress
and lipid peroxidation, the enzyme activity of the antioxidant defense,
immuno-inflammatory and vasoactive endothelial factors. The dependences between
the mechanisms of development of Hp-negative gastropathies and CHF are understudied.
Possible dependences between mechanisms of development of Hp-negative
gastropathies and pathogenesis of main disease (hypertension), complicated by
heart failure, are understudied also. It was revealed that the development of
gastropathy in patients with hypertension of 2 degree and CHF was associated
with depression disorders of lipid metabolism, activation of lipid peroxidation
and decreased activity of enzymes of antioxidant protection. The predictors of
macroscopic inflammatory changes of gastric mucosa in hypertensive patients
with CHF and HP-negative gastropathies are atherogenic ratio, blood levels of
diene conjugates, malondialdehyde and catalase. Tab.1, Fig. 1, Ref. 18.
Auth.
13.C13.87. Prognosis of rotavirus infection
in children. /Y. Kharchenko, S. Lavrukova, I. Yurchenko, N.
Movlyanova,
The aim of the
research was to develop the method for predicting the course of rotavirus
gastroenteritis in children. Under the supervision were 3607 children aged from
9 days to 5 years with the diagnosis of “Acute gastroenteritis” and “Acute
gastroenterocolitis”. The diagnosis of rotavirus infection was on the basis of
a set of clinical, epidemiological data and the results of para-clinical and
bacteriological studies and data of detection of rotavirus antigen strain.
Genotyping of rotavirus group A was performed by PCR 269 faecal samples. For rotavirus
infection is characterized by the following clinical symptoms: intestinal
disorders, symptoms of intoxication, signs of dehydration. Clinical manifestation
of rotavirus infection is closely correlated with indicators of leukogram,
erythrocyte sedimentation rate and the degree of metabolic acidosis. The
presence of concomitant bacterial infection burden for rotavirus, but the
presence of conditionally pathogenic flora practically did not influence on the
clinical manifestation of the disease. The longest duration of diarrhea was observed
in patients with rotavirus gastroenteritis was caused by a strain with genotype
PCR they often occurred in children older than 2 years (t=3,4; p<0.01)).
Special scheme has been developed for predicting the course of rotavirus
gastroenteritis, including the availability of mix infection, to determine the
severity of the pathological process a specially designed scale. Tab. 2, Ref.
6.
Auth.
13.C13.88. Expression pattern of
DNA-methyltransferases and its health implication (short review). /E. Kvaratskhelia, T. Tkemaladze,
Epigenetics is
heritable and reversible alterations of gene expression without direct
alteration of DNA sequences. One example of epigenetic factors is DNA
methylation, which prevents certain genes from being expressed. Another example
is histone modifications. In addition, miRNAs can silence genes at
transcriptional and posttranscriptional level. DNA methylation is regulated by
DNA methyltransferases (DNMT1, DNMT3a, and DNMT3b). Aberrant DNMTs expression
is the dominant mechanism for the genome instability which associates with a
wide range of diseases such as a cancer, autoimmune diseases, mental disorders.
In this article we reviewed the major mechanisms of changes of DNA methylation
regulated by DNMTs and the role of this changes in pathogenesis of various
diseases. In addition we briefly reviewed epigenetic agents, such as inhibitors
of DNA methyltransferases or HDAC (histone deacetylase) targeting oncology,
hematology, immunology, and neurologic disease indications, and which are in
various phases of study or have been clinically tested and approved by FDA
(Food and Drug Administration). Tab.1, Ref. 53.
Auth.
13.C13.89. Features of CD44+/CD24-LOW phenotypic
cell distribution in relation to predictive markers and molecular subtypes of
invasive ductal carcinoma of the breast. /M. Gudadze,
Q. Kankava, A. Mariamidze, G. Burkadze/. Georgian Medical News. – 2014. – # 3 (228). – pp. 81-87.
– eng.; abs.: geo., eng., rus.
Breast cancer is the
most widespread pathology among women. Despite the current progresses in
research and treatment of metastatic breast cancer, mortality caused by this
disease is still high, because above mentioned therapy is limited due to
existence of cells resistant to therapy. Cancer stem cells are the only cells
with ability of unlimited proliferative activity and cancerous potential, thus,
they participate in the growth, progression and dissemination of cancer. Cancer
stem cells are resistant to various forms of therapy, including chemotherapy
and radiotherapy. Results of examination showed that 50% of all cases are
positive on so called markers of stem cells, thus 45% of cases are negative.
CD44+/CD24-low cases (cases that reveal stem cell-phenotype) in the
group of invasive ductal carcinoma of Luminal A molecular subtype are almost as
many as CD44+/CD24+ and CD44-/CD24+ phenotype cancers. In this group non-stem
phenotype cases are 65%, so 5 times more than stem cell phenotype cancers. 1324
postoperative breast materials studied through 2008-2012 at the laboratory of
“Pathgeo-Union of Pathologists” LTD and Academician N. Kipshidze Central
University Clinic were used as test materials and specimens from 393 patients
with invasive ductal carcinoma were selected. CD44/CD24 markers’ expression in
phenotypically different cancers and clinic-pathologic parameters as well as
various biological features was conducted by the Pearson’s correlation analysis
and using X2 test. Statistical analysis of obtained numeral data was held using
SPSS V.19.0 program. Confidence interval of 95% was considered statistically
significant. Stem cell phenotype positive cases are with the highest percentage
represented in Luminal B and basal-like molecular subgroup that to our minds is
associated with their aggressive behavior and resistance to chemotherapy.
Relatively good prognosis and response to chemotherapy of Luminal A molecular
subtype cancers are to be stipulated by lower percentage of cases with stem
cells phenotype. With regard to the dimension of cancer the analysis of stem
cell phenotype cancers showed that frequency of stem cell phenotype
(CD44+/CD24-low) dramatically increases from T1 to T4 cancers. High
density of stem cell phenotype cancers in cancers with metastatic lymphatic
nodes proves that presence of mentioned phenotype plays a role in progression and
dissemination. On the one hand, little amount of stem cells phenotype cancers
(CD44+/CD24-low), on the other hand absence of negative cases for
markers of stem cell in Her2 subtype makes us consider that come phenotype,
close to stem-cell phenotype, plays the leading role in Her2 positive cases. Fig. 8, Ref. 23.
Auth.
13.C13.90. Parodontitis pathogenetic
factors, their interaction and effects. /Nana V. Kipiani, M.
Iverieli, N. Mosemgvdlishvili, Nino V. Kipiani, S. Japaridze/. Georgian Medical News. – 2014. – # 3 (228). – pp. 88-91.
– eng.; abs.: geo., eng., rus.
Induced by microbial
intervention oxidative stress causes electronic transport disorder in gingival
cells mitochondrias as well as decrease of energogenesis and increase of
lipoperoxidation. In oral cavity local immunity is decreased in parodontitis,
that is related with immunoglobulin A deficiency and lysozyme activity
decrease. Against this background, microbial factors damaging effect on
periodont is intensified. In parodontitis the free nitric oxide (NO) content
decrease in gingival tissues and its appearance in saliva are related with
transformation of NO into toxic peroxinitrite, that on its turn enhances
oxidation, parodontal injury, cell degradation and necrosis. Nitrooxide
deficiency in gingival mucosal cells is characterized by decreased protein P-53
expression and terminal differentiation disorder of the cells. Mitochodria related
energogenesis disorder in gums causes inhibition of their cell regeneration,
which together with apoptotic changes is characterized with parodontal tissue
destruction and depletion. Tab.2, Ref. 7.
Auth.
13.C13.91. Bacterial phagelysates and
malignant tumor growth. /K. Gambashidze,
Anti-tumor preventive
efficacy of E.coli phagelysate has been studied. Investigations were conducted
on 2-3 months 48 male mice. Regimen of preventive vaccinations were: single -
0,25 ml phagelysate intraperitoneal injection, 3 days before Ehrlich carcinoma
inoculation (1x106 tumor cells); 3 times vaccinations (0,25 ml, with
3 day intervals) 3, 6, and 9 days before inoculation of carcinoma; and 10 times
(during 10 days, before inoculation of carcinoma). Treatment efficacy was
evaluated according to the indices of cancer growth (development of cancer
tissue, cancer growth inhibition percent, lifespan and survival percent).
Experiments have shown that single and 3 times preventive vaccinations inhibited
tumor development and delayed malignant growth, while, 10 times permanent
vaccinations had no effects on cancer growth. Cancer growth inhibition percent
in single and 3 times vaccinated animals were 58% on the average. Maximal
lifespan in control group mice consisted 59 days. By the 125th day of cancer
growth, at single vaccination 17% of mice were alive, while in 3 times
vaccinated mice the survival percent was 25%. Anti-tumor potential of E.coli
pagelysate supposedly could be explained by immunoregulatory properties of the
preparation. Fig. 2, Ref. 8.
Auth.
13.C13.92. Ct-perfusion technique in evaluation of cerebral hemodynamics in
patients with carotid artery lesions. /F. Todua, M. Beraia, D. Miminoshvili, K. Lomidze/.
Georgian Journal of Radiology. – 2013. – # 1-2 (40-41). – pp. 8-17. – geo.;
abs.: eng.
Our research shows
that computer
tomography
study allows us
to simultaneously
make
a timely
diagnosis
of various
pathologies of
blood vessels feeding
the brain, as well as to determine their hemodynamic significance
and to carry out monitoring of the course of processes caused in the brain
substance by these pathologies. All
this is
extremely important for prevention of ischemic processes or determination of
treatment tactic.
Tab. 1, Fig. 13, Ref. 19.
Auth.
13.C13.93. The complex diagnosis of soft tissue malignant tumours. /F. Todua,
The data revealed that the ultrasound study with color
power doppler and MR tomography are highly informative research methods in soft
tissue tumors diagnostics. Ultrasound study with color power doppler is an
effective screening method, while MR tomography is quite pathognomonic in the
diagnosis of soft tissue tumors and reflects their morphogenesis, with
high-precision sets tumor localization, size, structure and local distribution.
By complex application of ultrasound and magnetic resonance tomography and
angiography it is possible to estimate the degree of tumor malignancy,
vascularization of neoplasms, its interrelation with blood vessels and bone
structures, which is an important criterion for determining treatment tactic. Fig.
4, Ref. 12.
Auth.
13.C13.94. Endoscopic ultrasound in the diagnosis of vater papilla tumors. /F. Todua, M.
Gurgenidze,T. Ioseliani, T. Changelia/. Georgian Journal of Radiology. – 2013. – # 1-2 (40-41). – pp.
67-71. – geo.; abs.: eng.
Significance of endoscopic ultrasound in the diagnosis of vater papilla
tumors is discussed in the article. Endosonography is highly
informative method and is characterized by high precision, which allows us to determine the
possibility of endoscopic resection and form of extended operation in late cases. Fig. 5, Ref. 6.
Auth.
13.C13.95. Incidence rates of the primary brain tumours in
To determine the incidence rate and evaluate
other basic epidemiologic data of primary brain tumours in
Auth.
13.C13.96. Metabolism Peculiarities in Postmenopause
Period after Hypolipidemic Therapy. /M. Akhvlediani, M. Balavadze, D.
Gachechiladze, M. Emukhvari, M. Martiashvili, N. Beckaia/. Bulletin of the
The aim of our work was to
show some metabolism peculiarities in menopause under 6 month hypolipidemic
treatment. 156 women (average age 58.4±5.3) in postmenopause were included in
our tests. Their total cholesterol exceeded 6.2 mmol/l. The patients were
divided into 2 groups. Group I consisted of 80 women with subclinical
hypothyrosis where TSH was more than 4.0 mkIU/ml), group II consisted of 76
women with clinical hypothyrosis, TSH was less than 4.0 mkIU/ml. Both groups
were divided into subgroups. Hypolipidemic treatment with 20 mg Atorvastatin
was carried out in the I and III subgroup women, while in the II and IV subgroups
no specific hypolipidemic treatment was done. The patients were given the
general diet recommendations. Besides, all the patients were treated with
L-Thyroxine( the average dose 12.5-100.0 mg) for hypothyrosis. Research has
shown that the dynamics of blood lipid spectrum changes at different stages of
hypothyrosis in postmenopause women points at the influence of thyroid hormone
deficiency. In thyroid dysfunction, atherogenic processes in carotid arteries,
namely, intima media - thickness(IMT) are proved to be interparallel processes.
6-month hypolipidemic therapy with Atorvastatin in hypothyrosis appeared to be
much more effective than diet. Taking into consideration the findings, we may
conclude that hypothyrosis in postmenopause accelerates atherogenic processes
in carotid arteries, hypercholesterolemia, increases atherogenic lipoproteins
and apolipoproteins along with the decrease of antiatherogenic lipoprotein and
corresponding apolipoproteins. Therefore, this may be considered as the factor
that helps to develop cardiovascular pathologies. Carotid arteries IMT may be a
particular risk factor for developing cardiovascular complications in women
with postmenopause.Tab. 2, Ref. 11.
Auth.
13.C13.97. On the
prophylactic and economic efficiency of the antihypodynamic massager. /G. Purtskhvanidze, R. Chabukiani,
A. Kharatishvili/. GEN. – 2013. – # 3. – pp. 106-108. – geo.; abs.: eng.
The effect of massage on the human organism is
discussed. Massage is a complex physiological process, involving many systems
and organs, the nervous system playing the primary role. The offered
antihypodynamic massager is a visual object, which the driver’s conscious
perceives. By mental interpretation and the energy generated by the
subconscious, the recovery of the diseased organ takes place. Just this is the
manifestation of the medical-prophylactic and economic efficiency of the
massager proposed. Fig. 1, Ref. 4.
Auth.
13.C13.98. In
two thousand years after Christ the process of dying seems pleasant with it being
predetermined by the death code embedded in the genome. /Z. Kheladze, Zv. Kheladze/. Critical Care & Catastrophe Medicine. – 2012. – # 9-10. – pp. 19-33. - eng.; abs.: eng., geo.
The article provides data on diversity of lives and deaths. It
provides the classification of life and death. The study confirmed emanation of β-endorphins in big
quantities in the body of a dying person. The clinical picture of this is
evidenced by
encephalopathy. The existence of the “death code” and its transfer through the
genome was confirmed. 14kd molecules of polypeptide with characteristics
similar to endorphins were separated from the blood of the patients. These
molecules are emanated by immunocompetent T-lymphocytes through the “death
code” before death. Its role in the process of dying was confirmed. Fig. 8,
Tab. 18, Ref. 11.
Auth.
13.C13.99.
Therapy for acute exacerbation of interstitial pneumonia. /Ch. Mitaka, M. Yamamoto, T. Toyofuku, M. Jibiki, G. Haraguchi/. Critical Care
& Catastrophe Medicine. – 2012. – # 9-10. – pp. 34-49. – eng.; abs.: eng., geo.
The treatment of patients with acute exacerbation of interstitial pneumonia was assessed retrospectively.
Prognosis of acute exacerbation of interstitial pneumonia was very poor with
the mortality rate of 68%. PMX therapy in early phases proved to be
affective. Non-inhalation method transiently improved oxygenation.
Auth.
13.C13.100.
Georgia presents Georgia-1 and Georgia-2 generation devices providing medical care during
space-navigation. /Zv. Kheladze, Z. Kheladze, I. Strelnikovi/.
Critical Care & Catastrophe Medicine. – 2012. – # 9-10. – pp. 50-53. – eng.; abs.: eng., geo.
During space flight the body of the cosmonauts are stressed
simultaneously with multiple adverse factors radiation, high speed of the
flight, gravity force, psychical and physical overstressing and other. There is no doubt that these
factors leave fingerprint on the cosmonaut’s organism and have effect on
achieving mission goals perfectly, negative factor are more sharply outlined
when the space flight have tight prolonged schedule. Fig. 2, Tab. 2, Ref. 5.
Auth.
13.C13.101. Life
science nanotechnology in development of a new generation delivery system
(NuCell Direct™ Delivery System). /M. Danielov/. Critical Care & Catastrophe Medicine. – 2012. – # 9-10. – pp. 54-61. – eng.; abs.: eng., geo.
The article provides description of new generation delivery system
in nanotechnology. Their affectivity versus the previous generations is evidenced. Their successful
usage in practical medicine
is suggested. Fig. 5, Tab. 1.
Auth.
13.C13.102.
Critical patients have better clairvoyance ability than their care personnel. /Z. Kheladze, Zv. Kheladze, N. Kajaia, Ts. Kharaishvili/. Critical Care
& Catastrophe Medicine. – 2012. – # 9-10. – pp. 72-76. – eng.; abs.: eng., geo.
The study covers patients in critical condition and the personnel of the Critical Care Medicine. All patients were conscious. The
conclusion is drawn that critical patients have better capability of
clairvoyance of different phenomena than the personnel. This difference was
statistically reliable. Fig. 4, Ref. 2.
Auth.
13.C13.103. Bilio-vascular architecture of
main magistral portal tracts. /I. Chanukvadze, V. Archvadze, M. Soreli, G. Gujabidze/. Critical Care & Catastrophe Medicine. – 2012. – # 9-10. – pp. 77-81. – eng.; abs.: eng., geo.
The aim of the study
was the identification of anatomical characteristics of lympho-biliary
interactions and their presumed connections in the intrahepatic portal tracts.
Morphological investigation of vascular-fibrous structures in the intrahepatic
portal tracts of 75 adults liver samples was performed. It was described that
the single segments of the intrahepatic structures and their fibrous tunics
constitute of three vascular-fibrous sheathes orbicularly surrounding each
other. The extramural biliary mucous glands provide the connections between the
lymphatic and intrahepatic biliary systems. Ref. 14.
Auth.
13.C13.104.
Diabetic foot infections – Clinical characteristics and antibacterial therapy. /A. Kistauri, G. Devidze, M. Jibladze, A. Kistauri-Cervantes/. Critical Care & Catastrophe Medicine. – 2012. – # 9-10. – pp. 86-90. – eng.; abs.: eng., geo.
84 patients with diabetic foot syndrome were studied. The study presents the peculiarities of their treatment that are conditioned
by pathogenic mechanisms. Tab. 6, Ref. 8.
Auth.
13.C13.105. Controlled hypotension in
intra-cerebral hematoma treatment. /T. Kerdzevadze, G. Gegia, Z. Tvauri, K. Kerdzevadze/. Critical Care & Catastrophe Medicine. – 2012. – # 9-10. – pp. 104-108. – eng.; abs.: eng., geo.
The study is done on
critical patients with intra-cerebral hematoma. The mechanisms of
intra-cerebral hematoma formation are researched. The necessity of hypotension
treatment for stopping the bleeding or preventing its exacerbation is
confirmed. Fig. 4, Ref. 6.
Auth.
13.C13.106. Usage of sedation in critical
patients. /Z. Kheladze, Zv. Kheladze, M. Tkemaladze/. Critical Care & Catastrophe Medicine. – 2012. – # 9-10. – pp. 109-113. – eng.; abs.: eng., geo.
The study focused on
management of sedation in critical patients. For sedation were used Midazolam,
Diazepam and Natrium-thiopental. According to therapeutic impact Midazolam was
preferred. The necessity of its usage in critical conditions was advised. Fig.
8, Ref. 7.
Auth.
13.C13.107. Diagnostic value of “Catephsine –
S” and “Alveomucyne” in critical patients. /N. Barnabishvili, Z. Kheladze, Zv. Kheladze, E.
Ivanidze/. Critical Care & Catastrophe Medicine. – 2012. – # 9-10. – pp. 114-117. – eng.; abs.: eng., geo.
The concentration of
Catephsine-S and Alveomucyne in critical patients was studied. The former was
found in increased concentration in all types of critical condition, especially
in diseased patients. The increase of Alveomucyne concentration was observed in
patients on artificial ventilation. It was more acute in patients with
different complications: bronchitis, pneumonia, etc. Tab. 3, Ref. 5.
Auth.
13.C13.108.
Diagnostic-analogous scale for critical care medicine clinics with limited
resources. /Z. Kheladze, K. Mumladze, Zv. Kheladze, T. Samkharadze/. Critical Care & Catastrophe Medicine. – 2012. – # 9-10. – pp. 118-120. – eng.; abs.: eng., geo.
The article describes new diagnostic-analogous scale for critical
care medicine clinics with limited resources. The characteristic features are simplicity and cheapness
compared to APACHE II scale. Tab. 2, Ref. 2.
Auth.
13.C13.109.
Comparative evaluation of hemostasis in patients with myocardial infarction in
thrombolytic therapy. /A. Kistauri, A. Korotkov, A. Korotkova, M. Jibladze, A. Kistauri-Cervantes/.
Critical Care & Catastrophe Medicine. – 2012. – # 9-10. – pp. 121-126. – eng.; abs.: eng., geo.
The relationship between the changes of the hemostatic and
kallikrein-kinin systems of blood from bleeding complications in patients with
myocardial infarction in the thrombolytic therapy is considered. Disturbances of the hemostatic system and
abnormal activation of the kallikrein-kinin system, both in terms of the
traditional conservative and the dynamics and the early and late thrombolysis are identified. The pathogenetic significance of interaction kinin system
and induced thrombolysis increasing fibrinolytic activity in the development of reperfusion syndrome are discussed. Analysis of the dynamics of
parameters of the hemostatic function shows the advantages of comparative
clinical safety of early thrombolysis, compared with the late one. The prospects of early
thrombolysis during treatment with inhibitors of the activation of the
kallikrein-kinin system are outlined. Tab. 3, Ref. 7.
Auth.
13.C13.110.
Usage of endoscopy in diagnostics and treatment of critical patients. /B. Tsutskiridze, S. Jaiani, D. Chakhunashvili, G. Chakhunashvili, N. Kvitsiani/. Critical Care
& Catastrophe Medicine. – 2012. – # 9-10. – pp.134-140. – eng.; abs.: eng., geo.
The article describes the usage of endoscopy methods for diagnosis
and treatment. The information on complications linked to such interventions is
provided. The conclusion suggests more frequent use of endoscopic methods in Critical Care
Medicine. Ref. 16.
Auth.
13.C13.111.
Critical care long-term management - would it be a useful experience in space
medicine? /Z. Kheladze, Zv. Kheladze, N. Ramishvili/. Critical Care & Catastrophe Medicine. – 2012. – # 9-10. – pp. 141-144. – eng.; abs.: eng., geo.
The treatment of 26 patients in critical condition of 30-100 days
duration is analyzed. This experience might be useful in space medicine, since the astronauts are similarly exposed to
non-adaptable conditions. Tab. 3, Ref. 5.
Auth.
13.C13.112.
Results of bone marrow immunocompetent function in critical patients. /Z. Kheladze, Zv. Kheladze, A. Palavandishvili, N. Barnabishvili/. Critical Care & Catastrophe Medicine. – 2012. – # 9-10. – pp. 145-149. – eng.; abs.: eng., geo.
In a body in critical state, the puncture morphology of bone cerebral is studied and the
consistence of nitric oxide and peroxide-radicals is defined. It is established that during the critical
condition of body, in bone cerebrals with morphology changes the presence takes place
appearance of nitric oxide and peroxide radicals is observed. Tab. 3.
Auth.
13.C13.113.
Nanomedicine
and photons. /M. Dolidze, N. Dolidze, N.
Chamiashvili, Z. Jibuti, L. Jibuti/. Nano
Studies. – 2013. – # 7. – pp. 271-286. – geo.
The paper reports on the
influence of the light photons on
the living organism, also
the history and types of phototherapy. One of the purposes of nanomedicine is
a drug delivery
directly to the damaged cells without damaging the healthy ones.
Since the objects causing biological diseases are of
nanosizes the struggle against them must be conducted by a
commensurate impact. Light photons – electromagnetic waves with length of
nano-and microsizes have just this selective
property. And
it turned out that disease-causing objects are characterized by the selective
absorption of photons – they absorb only the color (wavelength) corresponding to its maximum
ionization without damaging the healthy
cells.
Fig. 12,
Tab.
1,
Ref.
7.
Auth.
D1. Organization
and Management
13.D1.1. Some issues of
organization of successful marketing. /G. Gurgenidze/. Agrarian-economic Science and Technologies. – 2014. – # 1. – pp. 6-13. – geo.; abs.: geo., eng.
It is noted that at
the stages of the marketing development and improvement strategy the following
levers should be consistenly used: brand name and its life cycle definition;
specific location of successful marketing and its peculiarities; the level of
starting sale price of the brand; numerical indicator of competitors and its
analysis; the brand presentation necessity and efficient conduct of the work
related thereto. The effective and successful marketing is the image of a
specific entrepreneur, therefore it would be more correct to specify nd term it
as “personal marketing”, especially in the case of external marketing. Ref. 3.
Auth.
13.D1.2. State-level management
of the agricultural sector. /O. Keshelashvili/. Agrarian-economic Science and Technologies. – 2014. – # 1. – pp. 14-39. – geo.; abs.: geo., eng.
The following organizational, regulatory and management spheres of the
Ministry of Agriculture are presented as state-level management: raising soil fertility, plant protection, animal breeding activities,
agroengineering, veterinary, breeding activity; a perspective model of the
organizational-management structure and the tasks of the Ministry of Agriculture
are given; the principal priorities and the measures to be taken in terms of
improvement of management are set. Ref. 3.
Auth.
13.D1.3. Consequences of corporate management deficiencies. /G. Teplinsky/. Air Transport. – 2014. – # 1(9). – pp. 26-33.
– eng.; abs.: geo., eng., rus.
The article considers the state of corporate
relations in the country and consequences of corporate management deficiencies,
which have a negative impact on both the position of individual corporations
and the national economy as a whole. Ref. 5.
Auth.
13.D1.4. Technologization
of state government in
The article analyzes the major trends of
political and social technologies and actions of governmental institutions.
Ref. 10.
Auth.
D2. Environmental
Protection. Ecology
13.D2.1. A system of causal analysis of the observable
object by the example of environmental information analysis. /D. Radzievski/. Proceedings of the A.
Eliashvili Institute of Control Systems. – 2013. – # 17. – pp. 175-179. – geo.; abs.: geo., eng., rus.
The description of an
information processing system built on the basis of causal analysis is
considered. A detailed description of each software module is provided. The
principle of construction and operation of the program is explained by the
example environmental information analysis. Fig. 3, Tab. 2, Ref. 4.
Auth.
13.D2.2. Modern problems in connection with decrease
of the River Chorokhi drift at the Black Sea seashore in Ajara. /M. Alaverdashvili, D. Kiknadze, N. Kokaia, N. Khupenia, N. Tsintsadze/. Collected Papers of
Institute of Water Management. – 2012. – # 68. – pp. 16-18. – geo.; abs.: geo., eng., rus.
The problem of the dereliction at the Ajara Black Sea seashore as a
result of a dramatic reduction of river drift is outlined. The statistical data
according to years and the measures to betaken for handling the prolem are
given. Ref. 3.
Auth.
13.D2.3. The research of natural disasters formed in
the riverbed of the River Mletis Khevi in Dusheti district and their
consideration in the development of environmental schemes. /N. Gavardashvili, A. Gavardashvili/. Collected Papers of
Institute of Water Management. – 2013. – # 67. – pp. 33-40. – geo.; abs.: geo., eng., rus.
The erosion-debris flow processes taking place in the water catchment
basin of the River Mtelis Khevi in Dusheti district in 2012-2013 are discussed.
On the basis of a conducted field research, the new schemes to overcome the
accumulated problems are proposed. Fig. 6, Tab. 2, Ref. 5.
Auth.
13.D2.4. Evaluation of the risks of floods and in the Rivers Chorokhi and
Ajaristskali against the background of the climate change. /G.
Grigolia, D. Kereselidze, V. Trapaidze/. Collected Papers of Institute of Water
Management. – 2013. – # 68. – pp. 48-53. – geo.; abs.: geo., eng., rus.
The risk-periods (months) of floods and flashfloods were fixed by using
the observed data of the Rivers Chorokhi and Ajaristskali and the average
monthly, immediate and daily water peak dischargesm as well as the number of
occurrences of water peak discharges in individual months of the observed
period were assessed. The measures to be taken for regulation of the rivers and
the negative consequences of their implementation are considered. Tab. 8, Ref.
3.
Auth.
13.D2.5. The ecological problems of
The article considers the ecological problems of
Auth.
13.D2.6. The geotechnical aspects of
erosion-protection phytogenic measures. /T. Tevzadze, M. Shavlakadze, G. Omsarashvili/. Collected Papers of Institute of Water Management. – 2013. – # 68. – pp. 89-93. – geo.; abs.: geo.,
eng., rus.
The results of ithe impact of local plants root systems on the soil
strength characteristics of the burnt area in the
Auth.
13.D2.7. Reconstruction of the climate of
The article speaks of the importance of a study of the vegetation cover
of the Early and Middle Pleistocene in
Auth.
13.D2.8. The effect of heavy metals on the environmental
status of small rivers of the
The article deals with the complex studies carried out
on small rivers - the most important landscape component of the River Oki,
which evidence a serious man-made load resulting from agricultural activities
there and being evidenced by the accumulation of heavy metals in the surface
and ground waters. Fig. 1, Tab. 5, Ref. 5.
Auth.
13.D2.9. Oil absorbents. /G. Hovsepyan, M. Kalantaryan/. Collected Papers of Institute of Water Management. – 2013. – # 68. – pp. 157-159. – rus.; abs.: geo., eng., rus.
The absorption capacity of different fractions of floated obsidian (2,5¸5,0; 5,0¸10,0; 10,0¸20,0 mm) of kerosene, transformer oil and motor-car oil mixture has been
studied. The prospects of its use for treating the oil-polluted water are
discussed. Fig.
4, Ref. 5.
Auth.
13.D2.10. The implementation of adaptation measures
against the climate change in vulnerable regions. /L. Purtseladze/. Collected
Papers of Institute of Water Management. – 2013. – #
68. – pp. 183-187. – geo.; abs.: geo., eng., rus.
The definition of climate and its principlal types is cited. The
short-term and long-term objectives for studying climate changes, water and
wind erosion and the erosion level calculation formulas are given. Ref. 5.
Auth.
13.D2.11. The evaluation of drought-type flood-control
constructions. /G. Chakhaia, L. Tsulukidze, Z.
Varazashvili, R. Diakonidze, I. Khubulava, T. Supatashvili, G. Omsarashvili/. Collected Papers of Institute of Water Management. – 2013. – # 68. – pp. 200-203. – geo.; abs.: geo., eng., rus.
The work presents a
new scheme of a draught-type flood-control construction, containing
cylinder-shaped elements. The peculiarities of its design and the prospects of
its application in preventing floods are considered. Fig. 4, Tab. 1, Ref. 1.
Auth.
13.D2.12. Geological conditions of mudflow
formation in Kakheti and their management technology. /E. Tsereteli, M.
Gongadze,
Kakheti Region, which covers 17.5% of
Auth.
13.D2.13. A modelling study of
meso-scale air flow over the mountainous relief with variable-in-time
large-scale background flow. /D. Demetrashvili, T. Davitashvili/. Bulletin of the
The paper presents the
numerical investigation of some orographic effects in the troposphere taking
place in conditions of nonstationarity of large-scale undisturbed background
air flow. With this purpose a 3-D hydrostatic nonstationary model of meso-scale
atmospheric processes is used. The upper boundary of the calculated domain is
simulated by the free surface and on the lower boundary the condition of
slipping of air particles has been used along the relief. The problem is solved
numerically by the two-step Lax-Wendroff method. Performed numerical
experiments in case of both model and real relief of
Auth.
13.D2.14. Bioecological
peculiarities of introduced exotic species of Japanese laurel (Aucuba
japonica thunb) at the Black Sea
As a result of intensive
influence of anthropogenic factors, the soil structure changes, the amount of plant populations diminishes and
some of them disappear. Therefore, it is necessary to create cultural
phytocenosis and preserve plant biodiversity. Many species of the flora of
eastern Asia are introduced at the Black Sea coast of
Auth.
13.D2.15. The content of toxic metals in vegetables and fruits of
some regions of
In the
work, the results of studying the content of heavy toxic metals in fruits and
vegetables of various regions of
Auth.
13.D2.16. Ecological conditions of mountain forests in
Ecological
conditions of Georgian mountain forests are analyzed in the work. Development
of science and technology has altered the existing balance between the nature
and the human, which is caused by the unreasonable activities of the latter.
Because of this, plant covering is catastrophically reduced, some animal
species have either become extinct are on the brink of extinction, erosion has
destroyed arable land and air and water have been polluted. The author has explored
general conditions of the forests in
Auth.
13.D2.17. Development of the
treatment technology for waste waters polluted with heavy metals using the membrane
method. /N. Chkhubianishvili, M. Kavtaradze, G. Mchedlishvili,
Ts. Kurtskhalia/. GEN. – 2013.– # 3. – pp. 41-44. – geo.; abs.: eng.
The article deals
with the technology of treatment of acid pit water by electrodialysis. The
optimal conditions of waste water treatment were established. The technology is
recommended to be used in projecting the pilot production. Tab. 2, Fig. 1, Ref.
3.
Auth.
13.D2.18.
Environmntal monitoring by means of bio-indication
and bio-testing. /T. Pavliashvili, T.
Kalabegishvili/. Nano Studies. – 2013. – # 8. – pp. 273‑282.
– geo.
The paper deals with the biological methods of
environmental monitoring such as bioindication and biotesting. A brief
his-torical Review of these methods is given. Basic requirement imposed on
bioindicators are defined. Major bioindicators and their applications to air,
water and soil indication are dis-cussed. The role of biotesting in the determination of the quality just as of natural
water bodies and flowing water, so of potable water, is emphasized. The issue
of pollution of the environment with nanoparticles and nanomaterials is
exami-ned, and the related peculiarities of biotesting are consi-dered.
Ref. 12.
Auth.
13.D3.1. Gender statistics in
Gender statistics
represent the statistics about the status of women and men in all spheres of
public and economic activity. Gender statistics is aimed to ensure objective
data through comparison and evaluation with regard to the status of women and
men and of the gender equality. Improvement in collection and coverage of
statistical data on the ground of gender is very important for people working
on the gender issues, as well as for the representatives of legislative bodies,
government bodies and civil organizations. CEDAW –
The Convention on the Elimination of All Forms of Discrimination against Women
– is a landmark international agreement that affirms principles of fundamental
human rights and equality for women around the world. Countries that have ratified or acceded to
the Convention are legally bound to put its provisions into practice. They are
also committed to submit national reports (at least once every four years) on
measures they have taken to comply with their treaty obligations. Close and continuous cooperation between users
and producers is crucial to successfully produce and improve gender statistics
in
Auth.
13.D3.2. Statistical analysis of
demand for human resources and incomes of the employed in
Maintenance of
request of the process of industry with necessary qualification resources
stipulates business successful strategy. Maintenance of request of the process
of industry with necessary qualified resources stipulates the business
successful strategy. After establishing goals and problems of a company, the
question of providing it with material and labour resources will naturally
arise. In the labor market of
Auth.
D4. Other
Intersectoral Problems
13.D4.1. On the implementation of
a unified military medical electronic information network in the
The article is based
on literature reviews and personal observations on the medical service practice
in the armed forces of the
Auth.
13.D4.2. The scattering curve and its derivative in the process of
competition study. /G. Lezhava, B. Lezhava/.
The opportunity of using the scattering curve and its
derivative in the process of competition study has been discussed. This implies
first of all the tight struggle among economic subjects for the paymass
available in the society which may be used for satisfaction the needs of its
members and for purchase of appropriate products and services. The definitions
of concepts of the so called differential and integral competitive envy
(stimulus) (DCE and ICE) using the mathematical apparatus of the scattering
curve have been provided. For example, the economic growth coefficient for the
Paretto’s distribution of revenues has been calculated on which DCE directly
depends, and the appropriate charts are provided. ICE has been also considered
based on two models of society, the so called two-group and dual models, with
appropriate calculations and charts attached. In the conclusive section the
application of DCE and ICE concepts for commensurable economic subjects at the
example of scattering curves of distribution of info telecommunication and economic
resources among the world community countries is provided. Fig.
5, Tab. 1, Ref. 8.
Auth.
13.D4.3.
Boreholes
water level and earthquake’s daily monitoring. /A.
Sborshchikov, G. Kobzev, S. Mavrodiev, G. Melikadze/. Nano Studies. – 2013. – # 8. – pp. 203‑212.
– eng.
Studies
of precursors and events that occur before an earthquake is one of the most
important problem in todays’ seismology. Earthquake
prediction has become an urgent issue that helps forecast destructive
earthquakes. The paper discusses the daily monitoring of water level in several
boreholes located in different parts of Georgia for this purpose. Fig.
6, Tab.
1, Ref.
15.
Auth.