TOPICAL RUBRICS
A1. State and
Law. Jurisprudence
À2. Sociology. Demography
A3. Economy
À4. Education
À5. Informatics
À6. Other Social Sciences
B1. Mathematics. Mechanics.
Physics. Cybernetics
B3. Geology.
Geodesy
B4. Geography. Cartography. Astronomy
B5. Other
Natural and Exact Sciences
C. TECHNICAL AND APPLIED
SCIENCES. SECTORS OF ECONOMY
C1. Power
Industry
C2. Electrical
Engineering. Electronics. Radio Engineering. Communications
C3. Automatics.
Telemechanics. Computing Machinery
C4. Mining. Metallurgy. Chemical
Sciences
C5. Mechanical Engineering. Tool
Engineering.
C6. Light Industry
C7. Food Industry
C8. Construction. Architecture
C9. Agriculture and
Forestry. Fishery
C10. Water
Economy. Melioration
C11. Foreign and
Domestic Trade. Tourism
C12. Transport
C13. Medicine. Healthcare
D1. Organization and Management
D2. Nature Protection. Ecology
D3. Statistics
D4. Other Intersectoral Problems
A1.
State and Law. Jurisprudence
UDC 347.19:343
A1.1. General Reference of Criminal Responsibility of Juridical Person according to Georgian Law. /T.
Dolidze/. Inteleqtuali. – 2007. - #4.
– pp. 95-99. – geo., abs.: geo., rus., eng.
Rules of
criminal responsibility of juridical person are considered and are stated those arguments, which are known against this criminal
institute.
Auth.
UDC 336.3
A1.2. Some Questions of Reform and
Improvement of Bankruptcy Legislation. /L.
Shaishmelashvili/. Inteleqtuali. – 2007. - #3.
– pp. 10-13. – geo., abs.: geo., rus., eng.
This
article considers improvements in the Law on Insolvency and reforms of some
issues, such as, effectiveness of managers of the insolvency process and the
special jurisdiction on insolvency cases. The defects of operating law and the
necessity of adoption of the new statute are considered.
Auth.
UDC 343.222
A1.3. Legal Nature of Guilt Exception
Circumstance and Excusable Risk as the Guilt Exception Circumstance. /T.Dolidze/.
Inteleqtuali. – 2007. - #3. – pp. 31-35. – geo.,
abs.: geo., rus., eng.
In the publication is considered the legal
nature of guilt expel circumstance and
excusable risk, as a guilt
exception circumstance prevailing over
law.
Auth.
UDC
002.5/.6:340.134
A1.4. Questions of Legal Regulation of
Internet-Service in
The existing condition in the field of
Internet-service in
Auth.
UDC 662.276
A3.1. On Joining the Azerbaijan State Oil Company (SOCAR) to
the
Transit of Azerbaijan oil and
gas via territory of Georgia, also import of oilproducts for heating purpose
helps to meet needs of the country in the mentioned energoresources, promotes to
development of economy and strengthening of defence potential. bibl. 3.
Auth.
UDC 336.71
A3.2. Valuation of Commercial Bank and its
Stocks. /N. Giguashvili/. Proceedings, Automated Control
Systems. - 2007. - #2 (3). – pp. 143-148. – geo., abs.: eng., rus.
In this work are estimated the value of Georgian
commercial bank (namely TBC Bank) and its stocks on the basis of Discounted
Cash Flow Model. Here are established
relations between ROA and ROE of Georgian commercial banks. Is made a forecast
of common financial ratios on the basis of linear regression. Are shown the peculiarities of
Georgian commercial banks.
Auth.
UDC 061.5:658.6/.9
A3.3. Role of Internet in Commercial Operations of
a Firm. /P. Tsotskolauri/. Economics and
Business. – 2008. - #2. – pp. 97-101. – geo., abs.: eng.
The use of information
technologies and electronic facilities in commercial activities of a firm has
its positive and negative aspects. To reduce the negative situations, the firm
must carry out specific preparation work. It is important that the commercial
firm defines the use of the web-window according to the business goal and
defines the meaning and the structure of the web-window before it decides to
use the internet connection for its own goals. Also to defines the information
to be displayed. Following all these, the firm must choose the methods of
communication with its customers. This is the most important moment because the
main means of increasing the income in E-commerce is to lengthen the purchasing
process.
Auth.
UDC 378.09:681.51/.54
À4.1. The Study Process in Higher Schools. /T. Sukhiashvili/. Proceedings, Automated Control Systems. - 2007. - #2 (3). – pp.
104-113. – geo., abs.:
eng., rus.
Building an automated system envisages studying the
existing control system and creating an adequate model of its functioning. The
article discusses stages of building automated control system of organizing
study process in higher schools by object-oriented approach, starting from
assigning demands for the system and ending with formation of the mechanisms
for their realization.
Auth.
UDC
37.01
À4.2. Research of Service
Distribution in Educational Network. /M. Kartvelishvili, O.
Kartvelishvili/. Proceedings, Automated Control
Systems. - 2007. - #2 (3). – pp. 114-119. – eng., abs.: rus., geo.
This article presents the service distribution analysis in network flows of the external traffic of the Georgian Research and Educational Network and its application to the detection of typical and anomalous traffic patterns. As a result of this analysis, the most used services were identified for different parts of the network. Network statistics collection was performed by the software system, that was constructed by optimal interconnection of different Netflow and SNMP protocol components, which gave the opportunity to acquire much more detailed statistical information.
Auth.
UDC 519.863/.873
À5.1. The Multicriterial Optimization Problem,
Methods and Algorithms of Decision. /M. Salukvadze/. Bulletin of the
The general multicriterial optimization problem is presented. The numerical algorithm of the decision-making person's search for the compromise solution of the problem has been studied.
Auth.
UDC 629.7.025:519.863/.873
A5.2. Use of Nonlinear Programming Method for
Optimization of the Lower Part of Aircraft Wing Profile. /A. Prangishvili, T. Obgadze,
When
studying the problems of profile flow around with viscous fluid navier-stokes
mathematical model is often used. The respective algorithms developed for this
model are so complicated and the errors are so grave that they become
unsuitable for the problems of aerodynamics. Therefore, in practice the
corresponding calculations are based on semi empirical formulas and relations.
We construct the algorithm based on classical experiments and laws of
mechanics. We consider incompressible viscous fluid and then using
recalculation formulas, pass over to
aerodynamic indices for compressible fluids. The article is based on nonlinear
programming method for minimization of efficiency function – integral error
consisting of kinematic conditions, boundary conditions and modified function
of wing quality when integral laws of conservation of mass and energy for
viscous fluids are presented in the form of limitations. In order to
demonstrate the new algorithm the problem of flow around of aircraft wing
profile is presented. The upper part of aircraft wing is presented with the
matrix of coordinates of profile points, while lower part is presented with
cubic polynomial crossing the two given points (front and rear edges). The
components of the vector field of the required speed are determined as the
polynomials of two variables with unknown coefficients. The problem of
determination of the lower contour of profile is stated and solved on condition
of maximum quality.
Auth.
UDC 519.86:338.46
A5.3. About the General Method of Analyses
of the Complicated Massive
Service System. /Z.
Mikadze,
This article deals with the analysis of a
complicated system of massive service using one of the methods (offered by
Mikadze-Kakubava) of math modeling.
Auth.
UDC 681.3.06
À5.4. VN-Net. /R. Samkharadze/. Proceedings, Automated
Control Systems. - 2007. - #2 (3). – pp. 40-45. – geo., abs.: eng., rus.
The new approach to visualization of change of conditions of processes
and planning of loading of processors is offered. The new type of network Petri
- a VN-network which allows visualization the processes proceeding in a
computer at work of operational system is developed. On the basis of a
VN-network models and algorithms of visualization of change of conditions of
processes and planning of loading of processors, and also corresponding
educational program simulators are developed.
Auth.
UDC
517.977.52(158)
À5.5. The Task of Optimal Control for the Soft Landing to the Moon. /I. Mosashvili,
A fuel
optimization task in work for a soft landing on the Moon, has been completed.
The control is determined with Pontryagin's minimum principle. The mathematical
model of system included Maximum Principle with transversality conditions and the boundary conditions to find the optimal solution.
Computer designing of optimal system for the soft landing on the moon is
realized with use of system Matlab. A detailed investigation of the constrained
trajectory optimization of the Moon landing problem has been presented. The resulting trajectories were
analyzed based on state and control histories,
effect on fuel and usages, operational feasibility, etc. First, analysis was
performed considering only two-dimensional translational motion. The baseline
trajectory, which represented a minimally constrained landing trajectory, was found to be operationally infeasible. Operational
constraints were imposed to obtain a more viable
solution. A parametric study was performed varying the perilune height of the descent orbit and an impulse-like burn was
observed in cases that targeted a positive descent
orbit perilune height. The final vehicle attitude and landing approach of the
vehicle were found to be very shallow (horizontal), which motivated the inclusion of rotational kinematics in the equations of motion in order to constrain the attitude characteristics of the vehicle. Attitude kinematics
were included in the equations of motion and a constant scaling of the angular acceleration command appended to the cost
function in order to minimize the rotational motion
of the vehicle during the flight. The vehicle was constrained to land at a near vertical attitude (within 0.5 deg) with
zero angular rates. Fuel penalty metrics were obtained for both the terminal attitude and attitude rate constraints, as well as further
constraining the throttle to maximum thrust. It was found that the fuel usage increased by
further limiting the throttle bound to maximum thrust.
During the final portion of the trajectory, the final throttle profile was observed
to decrease to a specified lower bound as the vehicle rotated to a vertical orientation, which suggested the optimum was a minimal, or possibly zero, engine thrust during this interval. To investigate this, and to provide for navigational error margin, a terminal vertical descent phase was included in the
trajectory.
Auth.
UDC 519.863/.873
À5.6. Multicriterial Decision
Making Task Formalization
and Computer Support
in the Management. /T.
Macharadze. Proceedings, Automated Control Systems. - 2007. - #2 (3). – pp.
53-59. – geo., abs.:
eng., rus.
The task of multicriterial decision
making in the management is formalized. It considers decision making model
construction, based on linear convolution function, integrates the particular
criteria and its realization as a decision making support subsystem.
Auth.
UDC 681.3.06
À5.7. Algorithm for Combined Processing of
Scanned Information. /I. Kartvelishvili, A.
Djlantiashvili/. Proceedings, Automated Control Systems. - 2007. - #2 (3). – pp.
60-64. – geo., abs.:
eng., rus.
The thesis presents the algorithm
for combined processing of scanned information. Each algorithmic block is
designed to carry out certain function
for automatic identification. Each algorithmic block is presented in
such a way that it makes possible and
simplifies the programming process.
Auth.
UDC 681.3.06
À5.8. Object-Role Modeling for the
Automated Construction of Structures of Databases.
/G. Surguladze,
Questions of automation of the
processes of design of conceptual scheme for the distributed problem area and
construction of corresponding logic structure of a database on the basis of
object-role modeling and visual programming are stated. Results are adapted for the account, statistical
processing and monitoring of hydro resources in the rivers of
Auth.
UDC 681.51/.54
À5.9.
Perfection of System of Organizational Management on the Basis of
BI-Technology. /M. Giutashvili/. Proceedings,
Automated Control Systems. - 2007. - #2 (3). – pp. 73-78. – geo., abs.: eng., rus.
In the article is presented perfection of enterprise
information systems on the basis of BI-business Intelligence technology.
Software tools for information processing and making quick and exact decisions
in the enterprise systems are considered. On an example process of projects
processing in the department of organizational management, selection and
management of intelligence resources of the company, with use of automated
mechanisms of gathering of information, the analysis and decision-making is
shown. The basic stages of realization of organizational management automated
system by means of modern informational technologies are considered.
Auth.
UDC 002.6:681.3.06
À5.10. Converting
Information for Data Warehouse. /L. Petriashvili, M.
Kashibadze, M. Okhanashvili/. Proceedings, Automated Control Systems. - 2007. - #2 (3). – pp.
79-84. – geo., abs.:
eng., rus.
Converting information for data warehouse of
the big corporate systems is a complex process. It is characterized with high labour input. The
structure of the process of converting information for data warehouse is
offered. Problem of the dependence between processes of converting and
decision-support are researched.
Auth.
UDC 519.22:534.2
A5.11. On the One Mathematical Model
of the Sound Wave Propagation Theory. /T. Chilachava/. Proceedings, Automated Control Systems. - 2007. - #2 (3). – pp. 85-93. – rus., abs.: eng., geo
Questions
connected with the existence and
singularity of the solution of boundary value problem for Helmholtz equation with variable
coefficients are represented with the significant interest in the theory of
differential equations with partial derivatives. In the previous
articles a sound field created by point-like harmonic sources in a
three-dimensional nonhomogeneous wave conductor with a ruffled surface and an
uneven bottom was found by an asymptotic method of a small parameter. It is
confirmed that the sound field perturbation is represented by the continual sum
of diverge secondary waves, the source of which is the nonhomogeneously of medium
and the roughness of boundaries. Besides the wave amplitudes are
proportional to the small parameter and are depended on the parameters of all
modes (normal wave).
Auth.
UDC 62-192:681.5.08
À5.12. Interconnecting Measuring Facility, as an
In
automatic computer control technical
devices in case of random failure the common constant reservation with
substitution and rehabilitation is widely spread. The advantage of reservation
method is more completely shown when measuring devices are supplied with
analogue output. They are effectively applied in local subsystems of complex
automatic systems. In such subsystems as the redundant information processing
unit some devices are often used for
realizing the function of
rehabilitation. Significant increase of reliability is achieved in case when in
the algorithm of redundant information processing, signal comparison
logical operation of different measuring
units is introduced. In the paper. A
model of reliability for parallel – reserved systems with substitution and rehabilitation without significant limitations in the modes of
failure and rehabilitation distribution
rules is investigated.
Auth.
UDC 621.311.177
A5.13. Questions of Transportation and
Processing of the Information for Management of the Power System. /I. Modebadze, G. Murdjikneli,
The article covers information collection,
integration, transmission and processing issues for ensuring energy system remote management. Also, the
need of necessary information for
electrical energy system's efficient management is considered and information
preciseness and high quality delivery to the final destination is
demonstrated, i.e. mistakes should be completely avoided. For raising
reliability of the system, information transfer and processing alternative ways
by means of fiber optical and computer
systems application are considered.
Auth.
UDC 301.18:519.22
A5.14. Modeling Social Systems. /B. Meparishvili, G. Janelidze, T. Meparishvili/. Proceedings, Automated Control Systems. - 2007. - #2 (3). – pp.
104-113. – eng., abs.:
geo., rus.
This paper is considering the new
concept for a formal description of the society complexity with respect to the
viewpoint of modeling the social behavior that is conditioned by the existence
of a human being as of a nonlinear and fuzzy factor, respectively with very
high degree of freedom of behavior. The state of human society as a system is
described with the different degree of dissatisfaction or satisfaction with the social, political and
economical rules. Originality of this work is in the description of society in
a form of the neural graph with synaptic connections between them, where every
interaction between any two social clusters forms the new united cluster,
provokes redistribution of synergy-entropy, its balance and fitness. Behavioral
diversity of the society is conditioned by social homeostasis and heterostasis.
In the given context, the criterion of society security is associated with
stability, and in biological viewpoint with the idea of homeostasis or
fitness-function.
Auth.
UDC 519.674
À5.15. On Graph Modeling, Extension and
Transformation of Structured Informational Relations. /V. Nikolaishvili, D. Kapanadze, T. Zhvania, M. Kiknadze/. Proceedings, Automated Control Systems. - 2007. - #2 (3). – pp.
154-159. – geo., abs.:
eng., rus.
Visual
modeling of informational relations and logical reasoning by using graph of
mapping is considered. Possibility of graph representation of the structured
information by reducing to the extension and transformation of connections
among graph components of some concrete mapping is stated.
Auth.
UDC 061.68
À5.16. Main Functions and
Characteristics of Qos in Computer Networks. /L. Lobzhanidze, M. Tevdoradze/. Proceedings, Automated
Control Systems. - 2007. - #2 (3). – pp. 160-163 – rus., abs.: eng., geo.
Is
described the mechanism of the Quality of Service (QoS). It is a classified
network ability to provide the different levels of service of data transfer by categories. Are
described and characterized different functions of QoS and related preferences
and possibilities. It is shown the
realization of the algorithm “token bucket” for mechanism of traffic shaping.
Is shown the importance of management of resources, is described the main
characteristics of the realization
network connection: delay, packet
loss, packet jitter, load of network, bandwidth, and control of intensivity of
traffic.
Auth.
B1.
Mathematics. Mechanics. Physics. Cybernetics
UDC 627.841
B1.1. Establishment of the Optimum
Law of Change of Thickness of a Circular Cylindrical Gas Main. /N. Pailodze, G. Kipiani/. Hydro Engineering. - 2007. - ¹2(2). -
pp. 75-80. – geo. abs.: geo., rus., eng.
In the
work the establishment of such law of change of thickness of a gas main which
provides simultaneous transition of a design (environment) from an elastic
condition in plastic is considered. It is meant, that the material is isotropic
and has various characteristics concerning deformation of compression and a
stretching.
Auth.
UDC 05.13.16
B1.2. Graphical-Analytical Method for Construction of Revolving
Surfaces Normal
Three tasks of graphical construction of normal and tangent on the revolving surfaces are considered in the article. Two of them are revolving surfaces with elliptic points: flattened ellipsoid and elongated one. One of them is a surface with hyperbolic points: one-sheet hyperboloid. To determine normal and tangent at any point of the surface, a sphere tangent to this surface, should be constructed and the tangency of sphere and the surface defines the midline and the center of the sphere. The tangent sphere and the surface have equal radius of curvature at the tangent point and general normal passing the tangent sphere center. The perpendicular line of the normal at the given point will be the surface tangent. In parallel with the graphical construction the mathematical interpretation is presented. 3 il., bibl 2.
Auth.
UDC
517.911/.958
B1.3. General Solutions of Linear Matrix Canonical Second Order Differential
Equations with Variable Coefficients. /G. Kharatishvili/. Bulletin of the
This article contains the formulae
of general solutions for particular classes of nonhomogeneous
ordinary linear second order
matrix differential equations with variable coefficients.
Auth.
UDC 515.174.2/.3
B1.4. Holomorphic Structures in Seifert
Fibrations. /G.
Khimshiashvili, R. Wolak/. Bulletin of the
We show that each seifert
fibration of an orientable closed three-dimensional manifold has an intrinsic
complex structure induced from the loop space of manifold. It is also shown
that the natural mapping from the leaf space of Seifert fibration to the loop
space of manifold is meromorphic.
Auth.
UDC 519.624
B1.5.
On Some Boundary Value Problems with Conditions at Infinity for Nonlinear
Differential Systems. /I. Kiguradze/. Bulletin of the
For
nonlinear differential systems, the boundary value problems are investigated on
infinite intervals with conditions at infinity. Optimal, in a certain sense,
conditions are found, guaranteeing, respectively, the solvability and unique
solvability of these problems, as well as conditional stability of their
solutions.
Auth.
UDC 517.956.225
B1.6. On a Generalization of Calderon-Zygmund’s Theorem in
Weighted Lebesgue Spaces with Variable Exponent. /V.
Kokilashvili,
The paper is devoted to the study
of behaviour of the solutions of Poisson equation when the right
side belongs to the variable
Lebesgue space with weights. The obtained results generalize the well-known
Calderon-Zygmund theorem.
Auth.
UDC 531.754/.758
B1.7.
On the Wolverton-Wagner Estimate of a Distribution Density. /E.
Nadaraya, P. Babilua/. Bulletin of the
The result of the work consists
mainly in obtaining the limit distribution of an integral quadratic deviation
of the Wolverton-Wagner nonparametric estimate of a multidimensional
distribution density.
Auth.
UDC 517.584/.587
B1.8. On Stable Quaternionic Polynomials. /G.
Khimshiashvili/. Bulletin of the
We present several results on the
location and structure of the zero-set of a quaternionic polynomial. Our main
result provides an effectively verifiable criterion of stability of such
polynomials. We also explain own one can find the number of components of the
zero-set having negative real parts.
Auth.
UDC 519.624
B1.9. Numerical Analysis of the Stress
Distribution by the Boundary Elements Method in Continuous Body with a Hole. /N.
Zirakashvili/. Bulletin of the
The stress-deformed state of
tunnels has been studied. Numerical solutions of the corresponding boundary
value problem are obtained by the boundary elements method. The corresponding
curves are constructed.
Auth.
UDC 517.938:62-112.6
B1.10. Engineering Methods of Modeling of
Oscillation Processes and Rational Design of Mechanical Systems. /R. Adamia/. Bulletin of the
Methodology of optimization synthesis of linear multimass mechanical
systems oscillation processes and rational design of structural schemes is
offered, allowing to choose rational relationship of machine transmission
elastic-mass (inertial and stiffness) parameters ensuring their steady
functioning with minimum dynamic coefficient at transition regimes.
Auth.
UDC 531.261
B1.11. Numerical
Calculation of Distribution of Induced Charge Density on Planar Confined
Surfaces. /V.
Bolotov, R. Druzhchenko, V. Karazin, J. Lominadze/. Bulletin of the
The
calculation method of distribution of induced charge density on planar
surfaces, including fractal structures of Sierpinski carpet type, is proposed.
The calculation scheme is based on the fact that simply connected conducting
surface of arbitrary geometry is an equipotential surface.
Auth.
UDC 669.018.2/.8
B1.12. Physico-Mechanical Properties of
Si0,85Ge0,15:GaP Alloy. /G. Bokuchava,
Internal friction and shear
modulus temperature and amplitude dependences of Si0,85Ge0,15:GaP alloy were investigated. Relaxation processes
of dislocation origin were revealed and their activation characteristics
determined. The mechanism of internal friction relaxation processes was
analyzed from the point of view of geometrical and double-kink migration on the
screw and 600 dislocations.
Auth.
UDC 517.956
B1.13. Formulae of Extrapolations
and Filtrations of Partially Observed
Solutions to Quasi-Linear Functional Differential Equations with Random
Disturbances. Part V. /G. Sokhadze/. GEN. – 2007. - #4. – pp. 5-9. – rus., abs.: eng.
There are given explicit formulae of filtration of the solution to the differential equation with the random right-hand part by observations of the component. The evolutional case is considered separately.
Auth.
UDC 519.642.3/.4
B1.14. On Fredholm’s Integral Equation of
the Second Order with the Symmetrical Finite Kernel. /G. Kevanishvili,
The
strict solution of Fredholm’s integral equation of the second order with the
symmetrical finite kernel, appearing in antenna theory and diffraction of
waves, is presented. There is considered a special case when the free term of the equation contains an
unknown coefficient, determined from the additional, physically adequateá condition.
UDC 548.735
B2.1. Stereochemical Peculiarity of
Zink Denitro-Bis-Izonicotinamide Complex. /T. Turiashvili/. Georgian
Oil and Gas. - 2007. - ¹21. - pp. 133-137. – geo. abs. : geo.,
rus., eng.
By means of roentgenostructural
analysis the stereochemical peculiarity of Zink de-nitro-bis-izonicotinamide
complex 
has been studied. It is
stated that this molecule is monodentative. 
groups are in a tsis-binding situation towards
each other, the oxygen atoms are close to each other, the repelling force acts
causing the octaedric distortion. 2 il., tab. 1, bibl 4.
Auth.
UDC 548.735
B2.2. Crystal-Chemical
Aspects of the Zink Denitrit-Bis-Picolynamide Coordinative Mixture. /T. Turiashvili/. Georgian
Oil and Gas. - 2007. - ¹21. - pp. 143-147. – geo. abs. : geo.,
rus., eng.
The crystal chemical
aspects of denitro-bis-picolynamede coordinate mixture has been studied up by
means of roentgen structural analysis method. 
Zink
atom is placed in the center of symmetry and has a distorted octahedral
coordination. 
ligand
atom is coordinated both by carboxyl group oxygen and heterocyclic nitrogen,
the organic ligand is bidentative. 2 il., tab. 1, bibl. 4.
Auth.
UDC 549.67
B2.3. Similarity
of Zeolite Micropore Structures. /V. Tsitsishvili/. Bulletin of the Georgian National
Academy
Similarity
indexes for six loop configurations of zeolitic T-atoms are calculated on the
basis of n-dimensional vectors with the procedure of normalization taking into
account the unitary self-similarity of each configuration as well as the
possibility of "sliding" for the low-dimensional vectors that
topologically is considered as an addition of apexes not connected with the
graphs of loop configuration. Compliancy of loop configurations and similarly
of zeolite structures characterized by two loop configurations are considered
in the frame of the proposed approach.
Auth.
UDC 678.745.842
B2.4. Bends
in Satellite DNA. /T. Beridze, I. Pipia/.
Bulletin of the Georgian
National Academy
The dependence of the mobility of
three different stDNA oligomers (Citrus limon, Poncirus trifoliata and Mus
musculus) on temperature in PAAG has been investigated. The dependence of
mouse stDNA dimer’s Kfactor on temperature has chair-like form. First it
decreases in 5-25ºC interval, reaches a plateau at the 25-35ºC
interval, and finally decreases at 45ºC. The monomers of lemon and P.
trifoliata are splitting into two components at 5ºC (181 and 186 bp).
In the case of P. trifoliata they are presented in equal amount; in the
case of lemon – the fast moving component is less than half. The same process
occurs in the case of mouse stDNA monomer at 45-55ºC (234 and 240 bp). The
amount of retarded component is about 10%. It was shown for the first time that
in certain conditions stDNA molecules in solution may exist simultaneously in
two - bent and straight forms.
Auth.
UDC 577.175.82
B2.5. Regulation of NaK-ATPase Activity by Neurotransmitters. /Z. Kometiani/.
Bulletin of the Georgian
National Academy
The hitherto unknown NT-regulated
mechanism of NaK-ATPase localized in the nerve ending membranes is found. The
mechanism certainly has a functional significance and must be involved in the
regulation – modulation of chemical synaptic transmission. On the other hand,
the availability of the discovered specific protein, regulators (SFa and SFi)
of synaptic origin, makes it possible to consider these mechanisms as the
possible components of learning and short-term memory processes.
Auth.
UDC 502.72
B2.6. Potential of Higher Plants as Environmental Remediators. /G. Kvesitadze, E.
Kvesitadze /. Bulletin of the Georgian National
Academy
Elimination of contaminants from
the environment by microorganisms of different taxonomic groups is a
genetically determined property, which has already been widely discussed. Until
recently, plants still occupying above 40% of the world land, were considered
as organisms having only a limited potential for contaminants conjugation and
accumulation within cell organelles. Analysis of experimental data of last two
decades revealed the high ecological potential of plants. It has been exposed
deep degradation processes proceeding in higher plants and in the majority
leading to complete detoxification of anthropogenic contaminants: the enzymes
carrying out oxidation and conjugation processes have been revealed and
characterized; formation of anthropogenic contaminants conjugates with
endogenous compounds and enzymes participating in this process have been shown.
However, still there are uncertain questions closely related to the
contaminants multistage degradation process in plants, the Authors are making
an attempt to evaluate different aspects of plants, ecological potential from
the modern understanding, revealing the criterion for the evaluation of
deviations under the action of contaminants in the ultrastructural
architectonics of plant cells.
Auth.
UDC 615.89:58
B2.7. Biologically Active Compounds and Original Remedies from Plants
Growing in Georgia Georgian
National Academy
A purposeful study of plants of
Georgian flora for the content of cardiac glycosides, steroid and triterpene
saponins, lipids, stilbens, flavonoids, tannides, anthraglycosides etc. is
carried out. Cardiotonic, antiatherosclerotic, bronchospasmolytic,
antirheumatic, hepatoprotective and bile-expelling, antiherpetic, antiuremic
remedies, regulators of blood circulation and function of gastro-intestinal
tract were developed on the basis of different classes of natural compounds.
The raw material for the synthesis of steroid hormonal remedies and plant
growth stimulator are proposed.
Auth.
UDC 502.75:912
B2.8. The Map of the Natural Vegetation of
The map of the natural vegetation
of
Auth.
UDC 669.691.5:778.33
B2.9. Roentgenographic and Electron Microscopic
Investigation of Active Coating of Lead Dioxide Deposited on Titanium-Based
Anodes. /T. Rokva,
T. Chakhunashvili/. Proceedings of the Georgian National Academy
of Sciences, Chemical Series. – 2007. – vol.33. - # 1. – pp. 9-13. – rus., abs.:
geo., eng.
According to the X-ray phase analysis data of active coating of lead dioxide on titanium-based anodes it has been shown that in conditions of 1-50mA/cm2 current density obtained coatings belong to β-tetragonal modification of PbO2 with traces of α-orthorhombic modification. By scanning electron microscopic investigation of the samples of lead dioxide coating it was established that at 3-8 mA/cm2 current density a coarse-grained crystals with densities lower than 3 mA/cm2 and higher than 40 mA/cm2 (up to 50mA/cm2) – fine grained dense coating of total porosity less than 10% are formed.
Auth.
UDC 628.543
B2.10. Effect of High-Energy Radiation on the
Regeneration Degree of Cathionite cu-2 During the
Sewage Treatment from Heavy Metals. /R.Tushurashvili,
N.Chikvaidze, M.Mamardashvili, N.Aslanishvili/. Proceedings of the Georgian National Academy
of Sciences, Chemical Series. – 2007. – vol.33. - # 1. – pp. 14-16. – rus.,
abs.: geo., eng.
The
variation of adsorption capacity of ion exchanger (ÊÓ-2) used for copper-containing sewage treatment
has been studied after its multiple regeneration. It has been
established that after the first act of regeneration the capacity decreases by
12% and remains constant after the every act of regeneration. It has been shown
that after irradiation of ion exchanger (ÊÓ-2) by dose of 6.5 kg its adsorption capacity increases by
10-11%, i.e. practically returns to the initial value.
Auth.
UDC 539.16
B2.11. Radiation-Chemical Decay of Complex Alile
Ethers of Saturated Acids. /S. Gogoberishvili,
On the
bases of experimental data it has been proved that peculiarities of
redistribution of chemical bonds in bifuncional combinations are determined by
interactions of aliphatic functional
groups which are constituent part of molecules. ESR
(electron-spin-resonance) spectra of formed radicals and PMF (para-magnetic-fraction)
quantity confirm the correctness of the theoretical considerations.
Auth.
UDC 678.644:547.495.1
B2.12. Definition of the
Structured Polyurethane Glue’s Pleurae Spacious Net’s Compactness. /M. Shalamberidze, Z. Kopaladze and
Solidification
process of latent and polyizocianative solidified structured urethane polymers
UK-1 and Dismekol-400 has been investigated in dimethylformamyde and toluene.
Determination of physical parameters of network for the structured urethane
polymers is given.
Auth.
UDC 665.7.035.6:547.538.141
B2.13. Research of Reological Properties of Latental-Solidifying Butadiene-Styrole Thermoelasticplasts. /M. Shalamberidze, Z. Kopaladze,
The article is about the investigation
of the influence of the latental
solidifer substance containing LO-3 on the reological quility of the
thermoelasticplasts DST -30 and
sibyllene. There is made investigation of the plastication time
influence of the latental solidifing
(LO-3) rubbers of the butadiene styrole
DST-30 and sibyllene, on the reological quilities.
Auth.
UDC 547.538.141:678.4
B2.14. The Definition of the
Specious Net Physical Parameters of the Structured Butadiene-Styrole Rubbers. /M. Shalamberidze, Z. Kopaladze,
This article is about investigation oh the latental solidificial Butadiene - styrole rubbers SKS-30 ARK and SKS-30 ARK-15 and solidifying process of the suitable sulphuric volcanizites of rubbers in cyclonexanole and benzole. Hereby is given definition of the physical parameters of the specious net of the structured Butadiene - styrole rubbers.
Auth.
UDC 575.26
B2.15. Influence 0f Liquid Phase Polarity and Of Solid Supports Nature
on Intensity of Separation for Compounds of Different Homologous Series. /L. Eprikashvili, T. Kordzakhia,
N. Pirtskhalava, M. Zautashvili, M.
Dzagania/.
Proceedings of the Georgian National Academy of Sciences, Chemical Series. –
2007. – vol.33. - # 1. – pp. 34-40 - rus., abs.: geo., eng.
It was proven that especially clear separation of mixtures of saturated normal hydrocarbons takes place on nonpolar stationary liquid coated on the solid support Celite-545. On the contrary, better separation of mixtures of monoatomic alcohols with normal structure takes place on polar liquid coated on solid support Chromaton N-AW. It was deducted that for separation of mixtures of aromatic hydrocarbons, it is appropriate to use nonpolar liquid that is coated on the solid support Celite-545.
Auth.
UDC 541.183
B2.16. Quantum Model of
Polyatomic Polarizable Dipole Particle Adsorption on Metal Surface. /T. Marsagishvili, G.
Tatishvili/.
Proceedings of the Georgian National Academy of Sciences, Chemical Series. –
2007. – vol.33. - # 1. – pp. 41-45 - rus., abs.: geo., eng.
Adsorption processes on the interface: solid (metal) – polar liquid has been studied. These processes are considered in the framework of quantum model. Polyatomic polarizable dipole particle of complete structure participate on this processes. Quantum model of medium polarization operators one-particle Green function approximation is used also for consideration of medium (electrolyte) influence on adsorption processes. Analytic expressions for kinetic characteristics of adsorption processes are obtained. During these calculations gasephase characteristics of the particle adsorbed on given surface are applied as zero approximation. These characteristics are obtained by quantum-chemical calculations or are used experimentally obtained values of corresponding parameters.
Auth.
UDC 621.039:539.194
B2.17. Kinetics of the
Heterogeneous Elementary Act of Charge Transfer With Participation of Polarizable
Multinuclear Particles. /T. Marsagishvili, G.
Tatishvili/. Proceedings of the Georgian
National Academy of Sciences, Chemical Series. – 2007. – vol.33. - # 1. – pp.
46-49- rus., abs.: geo., eng.
Charge transfer processes in heterogeneous systems are considered. Current density is calculated for charge transfer processes through the interface with participation of polyatomic dipole polarized particles with consideration of interaction intramolecular vibrations of the particles with fluctuations of electrolyte polarization. Electrolyte is described with the help of temperature Green Functions of polarization operators. Analytic expressions for kinetic parameters of the process are obtained.
Auth.
UDC 547.313.5: 539.194
B2.18. Kinetics of
Triamylarsenite
Transesterification. /K. Sulaberidze, G. Bezarashvili, S.
Tsirekidze, R. Gigauri, Z. Dzotsenidze/. Proceedings of the Georgian National Academy
of Sciences, Chemical Series. – 2007. – vol.33. - # 1. – pp. 50-54- eng., abs.:
geo., rus.
The reaction
between Triamylarsenite and
1,4 – dioxibenzene under nonisothermal
conditions (434K- 478K) and stoichiometric relationship
of reactant amounts was
studied by means
of kinetic experiment
realization. The process
was being observed
using a volumetric
method via distillation
of the by-product
(Amyl alcohol). The
reaction rate values
were determined by
the method of
graphical differentiation of the
kinetic curve obtained. Specific
kinetic equations describing the
dependence of the
depth of chemical
conversion on time
under the given
experimental conditions are
presented. The numerical value of the rate constant of the transesterification reaction is as follows: k = 1.41∙10-4
L ∙ mmol-1∙min-1.
Auth.
UDC 546.284
B2.19. Program for Computation of High-Temperature Values
of Heat Capacity of Silicate and
Refractory Substances by the Method after Landia. /A. Gogishvili,
D. Eristavi, L. Megrelishvili, A. Sarukhanishvili,
V. Eristavi/. Proceedings of the Georgian National Academy of Sciences, Chemical
Series. – 2007. – vol.33. - # 1. – pp. 55-59 - eng., abs.: geo., rus.
Application of N.A. Landia's logical-approximation method is proposed for the purpose of updating information data base of high temperature thermal capacities. Unlike the earlier attempt to apply N.A. Landia's algorithm as a dialogue program for calculation of high temperature thermal capacities for a number of silicates, the program complex currently proposed by Authors allows to calculate practically the whole spectrum of silicate and refractory substances, including crystalline hydrates.
Auth.
UDC 669.14.018.44
B2.20. Mutual Connection 0f
Unisothermal Initial Heating with Isothermal Oxidation Kinetics of Heat
Resistant Chromium Alloys. /I. Nakhutsrishvili,
G. Mikadze, O.
Mikadze/.
Proceedings of the Georgian National Academy of Sciences, Chemical Series. –
2007. – vol.33. - # 1. – pp. 60-63 – rus., abs.: geo., eng.
On the kinetic data base of high temperature oxidation of heat resistant chromium alloys it has been obtained the empirical expression providing connection for the weight gain of initial unisothermic heating with kinetic parameters of the subsequent isothermal oxidation.
Auth.
UDC 666.951
B2.21. Physical, Mechanical and
Dielectric Properties of Diatomite-Containing Polymer Compositions. /Z. Tabukashvili, N.
Doxturishvili, K. Ebralidze, G. Papava, N. Maisuradze, N. Gelashvili, E. Gavashelidze/. Proceedings of the Georgian
National Academy of Sciences, Chemical Series. – 2007. – vol.33. - # 1. – pp.
64-66 – geo., abs.: rus., eng.
Phenol-formaldehyde
oligomers of resol. type have been synthesized. Polymer compositions on the base
of synthesized oligomers have been prepared with application
of unmodified diatomite as an additive. Conclusion is made, that in optimum
composition contains 40 – 60% of diatomite. Physical, mechanical
and dielectric properties of prepares plastics have been investigated. In most
cases prepared polymers are characterized by better characteristics in comparison
with analogous phenol plasticñs.
Auth.
UDC 678-13
B2.22. Quantum-Chemical Values of Relative Reaction
Ability of Some Thienyl-Containing
Methylvinilsilanes in Reactions of Copolimerisation. /N. Kupatadze, O. Mukbaniani, E. Markarashvili, Ts. Vardosanidze/. Proceedings of the Georgian
National Academy of Sciences, Chemical Series. – 2007. – vol.33. - # 1. – pp.
67-73 – geo., abs.: rus., eng.
Last time besides experimental searches
of all relative reaction ability of monomers which participate in reactions of
copolimerisation, great attention is paid to their quantum-chemical calculations with a
view to establish parameter values of reaction ability. On the base of
quantum-chemical researches of molecules of styrol, dimethylthienylvinilsilane (DMTVS)
and dithienylmethylvinilsilane (DTMVS), as well as their exited condition
and simplicified α-radicals, the sequence of their activity in chemical
reactions: DMTVS
< DTMVS < Styrol, is
determined, that is proved by comparing them with experimental data [6].
Auth.
UDC 541.64
B2.23. Thermogravimetric
Examination of Certain Polymer Compositions. /Guram
Abashidze, Lali Ghurtchumelia, Givi Papava,
Teimuraz Metshurtshvili/. Proceedings of the Georgian
National Academy of Sciences, Chemical Series. – 2007. – vol.33. - # 1. – pp.
74-76 – rus., abs.: geo., eng.
Some very promising structural and
protective-isolative thermograms of polymer compositions have been developed.
They will give us the possibility to find out mechanisms of thermo-oxidative
destruction and combustion of these compositions. The study of these mechanisms
will contribute to the creation of new polymer compositions resistant to high
temperatures.
Auth.
UDC 54-386
B2.24. Coordination
Compounds of Some 3d-Transition Metals Containing Dinitrobenzoic Ions. /G. Tsintsadze, T. Sakvarelidze, G. Adeishvili, M.
Tsintsadze, I. Gvelesiani/. Proceedings of the Georgian National Academy of Sciences, Chemical
Series. – 2007. – vol.33. - # 1. – pp. 77-82 – rus., abs.: geo., eng.
Coordination compounds of some 3d-transition metals with dinitrobenzoate of secondary amines have been synthesized and studied. Composition and structure of complexes was established on the basis of IR-spectra and X-ray analysis.
Auth.
UDC 54-386
B2.25. Dinitrobenzoic-Containing Heteroligand Coordination Compounds of Cobalt
and Nikel. /G.
Tsintsadze, T. Sakvarelidze, G.
Adeishvili, M.
Tsintsadze/. Proceedings
of the Georgian National Academy of Sciences, Chemical Series. – 2007. –
vol.33. - # 1. – pp. 83-87 – rus., abs.: geo., eng.
Ñoordination compounds of cobalt and nickel with dinitrobenzoate of secondary amines have been synthesized and studied. The composition and structure of complexes was established by IR-spectra and X-ray analysis.
Auth.
UDC 541.623
B2.26. Tautomeric Conversion of
Ethazole and its Compounds. /N. Zhorzholiani,
I. Beshkenadze/. Proceedings of the Georgian
National Academy of Sciences, Chemical Series. – 2007. – vol.33. - # 1. – pp.
88-89 – rus., abs.: geo., eng.
A tautomeric conversion of ethazole and its complexes M(AetH)2∙nH2O, M(AetH)2∙Cl2, (AetH2)2∙[MCl4] in benzol has been studied. Three forms of ethazole molecules in the compounds: Aet, AetH, and AetH2 have been determined.
Auth.
UDC 547.443
B2.27. Tetra-Acid Complexes of Ethazole. /N. Zhorzholiani, I. Beshkenadze/. Proceedings of the Georgian National Academy
of Sciences, Chemical Series. – 2007. – vol.33. - # 1. – pp. 90-93 – geo.,
abs.: rus., eng.
Tetra-acid
complexes (AetH2)2 [MCl4] are synthesized,
where M = Cu, Co, Ni, Mn, Fe, Zn, Cd,
AetH2 are protonated molecules of ethazole. Physical and chemical properties of the synthesized
tetra-acid complex compounds have been studied, such as melting temperature,
density, conductivity, solubility in water and organic solvent. These compounds
are three-ion electrolytes that dissociate in water, and are soluble in
methanol, ethanol, and acetone. Melting temperature is in a range 60-100°C,
cleavage of HCl occurs at 105-135°C, oxidation occurs above 300°C. End product
of dissociation for these compounds is MCl2 or MO. Consecutive
stability constants of the tetra-acid
complex compounds are defined by the potentiometric titration method in
acetone-water solution. It is determined that two ions [M(AetH)Cl3]–
and [MCl4]2– are produced in a system of MÑl2-AetH-HÑl. A
mechanism of these processes has been studied. It is determined that the complex producing ion can bind only two
molecules of ethazol.
Auth.
UDC 615.838.7:54.06
B2.28. Chemical Study of Bazaleti Lake Mud. /N. Bokuchava, D. Bibileishvili, D. Jincharadze/. Proceedings of the Georgian National Academy of Sciences, Chemical Series. – 2007. – vol.33. - # 1. – pp. 94-98 – rus., abs.: geo., eng.
For the first time the chemical composition and physical-chemical indexes of the mud from the Bazaleti Lake and its solutions has been studied, which permitted to obtain an extensive information relating to the wide range of quantitative and qualitative composition of organic and inorganic compounds, among which are biologically active ones. The possibility of application of above-mentioned mud in resort practice is proposed.
Auth.
UDC 663.12/.14
B2.29. Function of the Yeast Rad57 Protein Depends
on a Conserved Lipid-Binding Motif. / G. Tevzadze/. Bulletin of the
The Rad57 protein of the yeast Saccharomyces
cerevisiae has been extensively studied and is known to have multiple
functions critical for vegetative growth and meiosis. Here we present evidence
suggesting that these functions are regulated by lipid binding. This binding
likely occurs via a GW…W motif conserved in the phosphatidylinositol kinase
(PIK) protein family and in a meiosis-specific yeast protein Spo73. Earlier
studies indicate these proteins respond to and are regulated by
phosphatidylinositol phosphate (PIP) or phosphoinositide signaling molecules.
Specific mutations in the GWLVGW motif of Rad57 abolish the ability of lipid
binding, and significantly impair Rad57 functions essential for vegetative
growth, meiotic recombination and spore germination. These results imply the
multiple roles of Rad57 are governed via lipid signaling, and can be modulated
by direct binding of specific lipid second messengers to a specific motif in
Rad57p.
Auth.
UDC 577.25:616.89
B2.30. Chronic Stress and Pathological Aggression as
Premise for Killer Rats Formation. /N.
Aleksidze/. Bulletin of the
It is detected that disturbance of the biological
rhythm with light deprivation and social isolation, together with low
temperatures, results in stress and pathological aggression, leading to the
formation of killer rats. That is the result of the disruption in the
metabolism of biogenic amines.
Auth.
UDC 577.114
B2.31. Structure
of Glucofructan from Bulbs of Galanthus platyphyllus Traub et Moldenke
(Amaryllidaceae). /V. Barbakadze,
K. Mulkijanyan, M. Merlani, L. Gogilashvili, L. Amiranashvili/. Bulletin of the
Hot water extraction of bulbs of Galanthus platyphyllus Traub
et Moldenke followed by amylolysis (to remove starch), chromatography on
DEAE-cellulose (to remove acidic arabinogalactan) and elimination of acetylated
glucomannan by alkaline saponification (to remove water-insoluble deacetylated
glucomannan) afforded glucofructan. According to 13C NMR spectral data
it belongs to the branched type (mixed-linkage type) fructans, containing both
inulin and levan type structures.
Auth.
UDC 582.282.123.4
B2.32. Homogenous Preparation and Kinetic and
Molecular Indices of Endo-1,4-β-glucanase from the Extremophilic
Micromycete Aspergillus versicolor-83. /G. Kvesitadze, R. Khvedelidze, T. Urushadze,
L. Kutateladze, A. Berulava/. Bulletin of the
From the collection of
micromycetes, consisting of microscopic fungi isolated from different
ecological niches of the
Auth.
UDC 579.252.55:57.063.8
B2.33. Selection of Phages Active against Multiple
Antibiotic-Resistant P. stutzeri. /T. Suladze, M. Darsavelidze, T. Chanishvili, M. Elizbarashvili, M.
Dvalishvili/. Bulletin of the
Total of 26 strains of P. stutzeri were isolated from the upper respiratory tract and patients ears. 11 clones of phages active against them were selected in 2002-2004. After investigation of their morphology the above clone virions were ascribed to the Myoviridae family. According to the studies of biologic properties of 11 clones of P. stutzeri phages, it was found that the five phages were characterized by the highest lytic activity (3.1011-7.1011) and wide range of action (40-80%)
Auth.
UDC 550.36
B3.1. The Role of Quartz and Biotite in
Endogenic Metallogeny. /G. Odikadze,
Quartz and biotite, among the granite rock-forming minerals, play the main part in endogenic metallogeny. Due to specific peculiarities of their unique crystalline lattice, quartz assumes no ore elements isomorphically and thus plays positive role in endogenic metallogeny, while biotite accumulates practically all the ore elements and thus affects negatively not only the formation of ore but the formation of their own minerals as well. 1 il., bibl. 2.
Auth.
UDC 004.00.11
B3.2. Peculiarities of
Adigeni ore-cluster ~ (400 sq./km)
is mainly built with Eocene volcanogenic-sediment thickness. Out of the
revealed five perspective areas in the region of Gagvi area the most important
zone is Gagvisubani. Ore-metasomatic rocks of Gagvi area represent
intrusive-dome construction in structural arrangement and from all sides they
are confined by middle Eocene regionally propylitized volcanites. Ruptural
tectonics plays significant role in the distribution of metasomatic rocks.
Productive mineralization is sometimes presented with gold-containing
barite-polymetallic and quartz-barite-polymetallic ores. Ore-mineralization
intensity refers to absolute prospectivity of the mentioned area. 1 il., bibl.
5.
Auth.
UDC 550.831
B3.3. On the Uniqueness of Solution of the
Inverse Problem of Gravitation. /D.Kapanadze/. Georgian
Oil and Gas. - 2007. - ¹21. - pp. 49-55. – geo. abs. : geo.,
rus., eng.
The article deals with the question of
uniqueness of solution of the inverse problem of gravitation prospecting for
polynomial density which depends on one variable. In particular density changes
in a horizontal direction. The following theorem is proved as unique: if the
boundary of any area (on the plane) does not contain short straight line, the
solution of the inverse problem of gravitation prospecting is unique. Hence the unique solution for the inverse
problem of gravitation prospecting for circular polygons. The unique theorem is
also determined in the three-dimension area for
Auth.
UDC 553.068(47.93)
B3.4. Refinement of Geological Structure of
On the
basis of re-interpretation of geological and geophysical data for the
Auth.
UDC 513.511.509
B3.5. Mathematical
Modeling of the Wave Disturbance Caused by Earth Local Relief and its Impact on
the Atmospheric Agents. /Z. Khvedelidze, R.
Danelia, T. Shalamberidze. R. Aplakov,
For the wind velocity, storm
and mixture spread average velocity in the air, equations are obtained by means
of application of hydrothermodynamic linearized equation system considering the
impact of parameters characteristic for relief. Solution of the equations was
provided in a form of the plane wave with the external force factor added.
Analysis of the solution showed that the wave disturbance velocity amplitude
depends on the relief inclination angle. Nature of this relation was studied
for individual regions of Georgia and the results were compared with the field
practice data. The obtained theoretical results confirmed the phenomena
observed in the field wind velocity, in particular, presence of two maximums in
the wind profile in Tsipa-Khashuri-Gori direction. There was also revealed the
significant role of the wave disturbance influence on mixture spread in the air
caused by the relief. 4 il., bibl. 7.
Auth.
UDC 552.322.1
B3.6. Pre-Alpine Geodynamics of the
It is shown that granitoid magmatism and regional metamorphism of
different type, being a reflection of thermobaric field variation in external
shells of the Earth, represent a direct consequence of geodynamic settings in
various structural units of the Earth’s crust and lithosphere of the
Auth.
UDC 627.223.4
B3.7. Increase of Order of Local Seismic
Energy Release Caused by Water Level Variation in the Enguri High Dam
Reservoir. /V. Abashidze, Z. Javakhishvili,
Th. Khutsishvili, E. Mepharidze, N. Zhukova, T. Chelidze, T. Matcharashvili/.
Bulletin of the
It was
reported earlier that water level periodic variation in a high dam reservoir
may lead to the synchronizing influence on local seismic activity. Taking into
account that phase synchronization is not related to strong functional
relationships, in the present study small dynamical changes in seismic activity
caused by water level variation were investigated. For this purpose the
recurrence quantitative analysis (RQA) approach was used. Analysis was carried
out on data sets of water level daily variation and released daily seismic
energy. It was shown that when the external influence on the earth’s crust
caused by reservoir water becomes periodic the extent of the regularity of
earthquake daily distribution essentially increases.
Auth.
UDC 627.223.4
B3.8. Controlling Influence of Reservoir
Water Level on Local Seismic Energy Release. /V. Abashidze, Th. Khutsishvili, Z.
Javakhishvili, N. Zhukova, E. Mepharidze, T. Chelidze, T. Matcharashvili/.
Bulletin of the
We present an evidence of
reservoir induced controlling influence of water level periodic changes in
Enguri high dam reservoir on regional seismic activity. Data sets of water
level daily variations in the Enguri high dam reservoir and the seismic data
sets recorded by the local network have been analyzed. Monthly frequency of
earthquake occurrence has been calculated. According to our results decrease in
daily seismic energy release around Enguri high dam during water level periodic
variation can be assumed as a control of seismic activity. This controlling
influence may be explained as a result of phase synchronization of complex
seismic process with small periodic changes in the reservoir water level.
Auth.
B4.
Geography. Cartography. Astronomy
UDC 523.681:629.787/.788
B4.1. On the Probability of
Collisions of Interplanetary Space Vehicles with Meteors. /R. Kiladze/.
Bulletin of the
On the average once in 4 years uncontrolled geostationary satellites
suffer small sudden changes of speed, which is connected with their collisions
with fine space debris. Most of these events are caused by collisions with
meteoric bodies. Such collisions threaten space vehicles as well, sent to
planets of the solar system to study their physical nature. The present paper
is devoted to determining the degree of risk of collision of a space vehicle
with meteors at different possible variants of its interplanetary orbit. The
study allows selecting - out of several possible variants – the least hazardous
trajectory of interplanetary flight of a space vehicle from the point of view
of meteoric danger.
Auth.
UDC 523.4:52-846
B4.2. On Vortex Model of
Planet Formation in Keplerian Disks. /A
Tevzadze, G. Chagelishvili, J. Lominadze/. Bulletin of the
Invoking a hypothesis that
long-lived vortices in the protoplanetary nebula play an important role in the
three-phase model of planet formation, we analyze the first phase and present
results on the stability and nonlinear development of vortices against the
background of shearing Keplerian flows. We discuss the conditions under which
vertical perturbations evolve into long-lived self-sustained structures and
describe the properties of these equilibrium vortices. The properties of
equilibrium vortices appear to be independent of the initial conditions and
depend only on the local disk parameters. In particular, we find that the ratio
of the vortex size to the local disk scale height increases with the decrease
of the sound speed, reaching values well above the unity. The process of spiral
density wave generation by the vortex leads to the formation of spiral shocks
attached to the vortex. These shocks may have important consequences on the
long term vortex evolution and possibly on the global disk dynamics. Our study
strengthens the arguments in favor of anticyclonic vortices as the candidates
for the promotion of planet formation. Hydrodynamic shocks that are an
intrinsic property of persistent vortices in compressible Keplerian flows are
an important contributor to the overall balance. These shocks support vortices
against viscous dissipation by generating local potential vorticity and should
be responsible for the eventual fate of the self-sustained anticyclonic
vortices.
Auth.
UDC 622.2:519.863
B4.3. Natural
Anthropogenic Mining Complexes and the Problems of their Optimization. /Z.
Seperteladze,
The present work concerns
optimization issues of natural anthropogenic industrial mining complexes.
Particularly, statistic interrelation between physical and geographic factors
and reclamation time period is obtained by means of linear regression analysis.
In combination with appropriate empiric data base, it allows to make
scientifically well-reasoned statement about optimization of environmental
conditions.
Auth.
UDC 551.435.84
B4.4 Geographo- Hydrological Arguments on Possible
Expansion of the
The Tskaltubo Cave System is one
of the most important speleological objects which is designed for effective
tourist exploitation. Because of its complex geological setting the entire
system and its unknown branches in particular have not been studied yet. On the
basis of geographo-hydrological methods their provisional directions have been
defined and new vectors of speleological research stated.
Auth.
UDC 551.438.5
B4.5. The Anthropogenic Transformation
of Natural Landscapes of Sub-Mediterranean Semi-Humid Foothills. /T. Mamukashvili/. Bulletin of the
In sub-Mediterranean semi-humid
foothills the stability of landscapes has been established – the degree of
anthropogenic influence on them, the sections of ecological tensions and the
territory distinguished for high landscape diversity have been determined.
Auth.
UDC 550.93
B4.6. Absolute Age of the Relief of the
Black Sea Coast Zone of
On the basis of archaeological
material and radioisotope dating it is concluded that the land surface of the
zone of the
Auth.
B5. Other Natural and Exact Sciences
UDC 591.481.8
B5.1.
Dynamics of Neuronal Activity of the Parietal Associative Zones of the Cat
Cerebral Cortex in Sleep-Wakefulness Cycle. /T. Oniani, L. Gvetadze, Sh. Manjavidze,
The dynamics of neuronal activity
of the so-called association zones of the parietal regions of the cerebral
cortex in the sleep-wakefulness cycle has been studied in chronic cats. It is
conjectured that the changes in neuronal activity of the association zones of
the parietal regions of the cerebral cortex over sleep-wakefulness cycle
display the dynamics of cognitive processes, which on their part, are
determined just by the transformation (both
quantitative and qualitative) of the neuronal activity of the cerebral cortex,
in general, and of its association zones, in particular.
Auth.
UDC 903.4
B5.2.
Hominid Fossils from Dmanisi and Their Place Among the Early Hominids. /D.
Lordkipanidze, A. Vekua, Ph.G.
Rightmire, A. Margvelashvili/. Bulletin of the
Discoveries of Homo remains
consisting of four craniums and four mandibles with several postcranial
remains, stone artifacts of Olduvai type Mode 1 (13) and faunal fossils that
points to a latest Pliocene – earliest Pleistocene age during the excavations
in Dmanisi, Republic of Georgia, yielding the age of 1.81 M. yr. (Ar40/Ar39) have
reopened the debate about the first human dispersal out of Africa; being one of
the problematic questions for the paleoanthropologists. The Dmanisi paleodeme
presents numerous primitive characters, typical to Early African hominids, but
it as well shares quite big similarities with Homo erectus, and is
probably better accommodated to the latter species. Dmanisi, presenting a
small-brained population, could have been the ancestors of the African and
Auth.
C. TECHNICAL AND APPLIED SCIENCES. SECTORS OF ECONOMY
UDC
627.841
C1.1. Analysis of Seepage Parameters During the ENGURI HPP
Reservoir Filling Up. /M.
Kalabegishvili, L. Mebonia/. Hydro Engineering. – 2007. - ¹1(1). - pp. 95-100. – rus. abs. geo., rus.,
eng.
Based on
transient analysis of seepage task calculation are given some results of ENGURI
HPP reservoir right bank investigation with respect of geological crack and
filling mode. Seepage calculation is carried out by cycle-iteration scheme in
frame of no stationary field problems where conductivity and volumetric
water-content were determined by numerically functional relations. Head
gradients were analyzed in cases of 3 m
sudden filling in upstream and in case of slow filling and steady state. ill.
5, bibl. 3.
Auth.
UDC 621.711.1
C1.2. Analyzes of Application of Thermal Pumps in
Heat Supply in the Conditions of
The prospects of use
non-conventional, non-traditional sources of energy
and the role of thermal pumps installations in economy fuel and energy resources
savings are analyzed in
Auth.
UDC 626/627
C1.3. Aging of Hydraulic Engineering Structures and
some Measures towards Prolonging their Term of Service and Averting Ecological
Crises. /Ts. Mirtskhoulava/. Bulletin of the
The obtained expressions enable to
assess the level of vulnerability or the onset time of the condition of
breakdown of facilities of various purposes, for different prognostic
variables, at any time interval and value of impact . Assessment of
vulnerability according to diverse prognostic variables will allow to select
the parameter that is most "to blame" for the facility becoming
vulnerable. This parameter should form the basis for developing measures
towards relieving the facility from the vulnerable state.
Auth.
UDC 621.22
C1.4. Water Power Resources of the Rivers in
Abkhazia. /M. Keburia, O. Shautidze, A. Chichinadze/. Bulletin of the
The
research data of water-power resources of the rivers in Abkhazia are
considered. Specific energy per unit of the catchment basin area is determined.
The equation for calculation of the theoretical power is obtained. This allows
the power for any required sector of the river in Abkhazia to be determined
with precision up to 35%. Calculation of the power by the mentioned equation
may be used in prospective work to the first approximation.
Auth.
UDC 621.311.24
C1.5. Increasing the Wind Turbine Efficiency by Using Chimney Air Draught Power. /G. Sanadze/. Transport and Machinebuilding. – 2007. - #1. – pp. 74-79. – rus. abs.: eng., geo.
The modernized wind turbine concept is presented. Basic advantage of this wind turbine is to increase the efficiency and productivity of the power station. Besides by synthesis of two principles of transformation of the energy, the mutual reduction of lacks of these principles, without increase of dimensions and essential complication of its design is provided. Particularly, increase of the efficiency of the wind-solar power station is provided by using wind power passing through the central part of the blade-swept area of the wind turbine for the acceleration of the air stream in the chimney tower by using ejection effect. It is necessary to pay attention also to the fact that while combining functions of the chimney tower and wind power installation pole, expenses on the construction of structure are considerably cut down. It should be paid attention to the fact that the proposed basic decision allows to provide almost continuous running of the wind power station.
Auth.
C2. Electrical Engineering. Electronics. Radio
Engineering. Communications
UDC 621.39:681.7.068
C2.1. Systems
of WDM in fibre-optic lines of connection. /A. Papashvili/.
Inteleqtuali. – 2007. - #3. – pp. 76-80. – rus., abs.: geo., rus., eng.
Conducted
analysis of WDM system shows that such impressive result is possible to be
reached in the expense of transferring at the method of frequent stiffness of a
signal. One of the main worthies of WDM technologies is the possibility of
parallel transmission of different signals (DDH, SDH, ATM, Internet and so on).
Organization of passing facts in WDM is very complex. Light together with
different waves is connected and is transferred to one optic line. Though for
realization of this method is necessary to be sure that transferring signals
are not damaged and that signals of different frequency does not interact with
each other.
Auth.
UDC 621.39
C2.2. Planting the advanced system in
Considering
the Georgian Telecommunication market demands, according to its technical
characteristics, it is reasonable to plant C&C08 switching system which
will exactly satisfy all the requests for PSTN development in
Auth.
C3.
Automatics. Telemechanics. Computing Machinery
UDC 519.728.4
C3.1. On the
Method of Modeling of a Stationary Sequence. /Z.
Piranashvili, M. Piranashvili/. Bulletin of the
35-38 – eng.,
abs.: eng., geo.
Methods of modeling of stationary Gaussian or
non-Gaussian sequences of some classes are considered. This problem is reduced
to the modeling of independent stationary Gaussian Markov sequences. Simple
algorithms of modeling of these sequences are presented.
Auth.
C4. Mining. Metallurgy. Chemical Sciences
UDC 622.244.442
C4.1. Adhesion and Friction Forces Impact on Drilling Tool
Motion. /G. Varshalomidze, V. Khitarishvili, M.
Asatiani/. Georgian
Oil and Gas. – 2007. - ¹21. - pp. 70-79.
– geo., abs. geo., rus., eng.
The
influence of adhesion and friction forces on drilling pipe casing stickings has
been studied up also influence of fluids treated with oiling agents on adhesion
and friction force decrease while contact between steel and filtration crust,
also between steel and clay layer. The investigation carried out showed that
fluids treated with hydrofobic lubricant agents considerably reduce adhesive
and friction coefficient. The test was carried out by means of adhesive and
friction tools. Application of the fluids considerably reduce drilling tool
stickness in clay rocks when well drilling takes place. 8 il., bibl. 6.
Auth.
UDC 622.244.442
C4.2. Investigation of Physical-Chemical Influence of Fluids
on Clay Rocks. /G. Varshalomidze, V.
Khitarishvili, N. Machavariani, M. Asatiani/. Georgian Oil and Gas. – 2007.
- ¹21. - pp. 80-85. – geo., abs. geo.,
rus., eng.
Application
of the device is recommended for drilling wells in clay rocks in laboratory
conditions to state the content of the effective fluids. It enables to study up
the fluid physical-chemical influence on the clay rock samples. Applying this
device allows to determine the clay rock stability coefficient 
. Use of the fluids
treated on the basis of investigations considerably increases the drilling
technical-economic indices in the clay rocks while running wells. 1 il., bibl.
5.
Auth.
UDC 622.24
C4.3. Provocative Methods of Oil
and Gas Inflow. /I. Goguadze, T. Sarjvrladze/. Georgian Oil and Gas. – 2007.
- ¹21. - pp. 86-103. – geo., abs. geo.,
rus., eng.
The provocative methods of fluid inflow are presented and discussed in the
work; among them: drop in pressure, substitution of fluid density for a lower one,
airing and air masses piping in, level lowering, application of transferring
valves, using foams and intensive irrigation. On the basis of the analysis the
conclusion has been drawn to provide all works in succession to achieve the
satisfactory result. 9 il., tab. 1, bibl. 2.
Auth.
UDC 622.24
C4.4. Oil and Gas Three-Phase Multicomponent Isothermal
Filtration Model. /G. Varshalomidze,
The
multicomponent filtration model is discussed that is placed in the oil and gas
field cap in a great amount. It is used for determination of prognosing
resources and reduction-oxydation processes, modeling, especially for
determination of thermodynamic processes component composition. 1 il., bibl. 5.
Auth.
UDC 624.131
C4.5. Feed-Controllers Compilation Principles and
Activity Analysis. /I. Goguadze/. Georgian Oil and Gas. – 2007.
- ¹21. - pp. 108-114. – geo., abs. geo.,
rus., eng.
The work
presents feed-controllers of automatically direct assemble with backcontact
systems widely injected in oil and gas technologies. They are able to determine
their transfer function and control parameters. On the basis of the graphical
material analysis both positive and negative sides of separate types of
Feed-Controllers have been stated. 7 il., bibl. 3..
Auth.
UDC 624.131
C4.6. Various Modification of Feed-Controllers. /G. Varshalomidze/. Georgian Oil and Gas. – 2007.
- ¹21. - pp. 115-122. – geo., abs. geo.,
rus., eng.
The work
presents Feed-Controllers of automatically direct assemble with backcontact
systems widely injected in oil and gas technologies. They are able to determine
their transfer function and control parameters. On the basis of the graphical
material analysis both positive and negative sides of separate types of
Feed-Controllers have been determined. 8 il., bibl 3.
Auth.
UDC 665.61
C4.7. Determination of Oil Origin by the Method of Infrared-Optical Photospectrometry. /O. Seskuria,
Spectral analysis of oil extracted from four
wells in two regions has been described in the article by the method of optical
photospectrometry. By the analysis taken with the optic photospectrometer the
difference between spectra has been determined on the basis of the primary
data. The subsequent investigations need more profound study of the given
problem. 1 il., tab. 1, bibl. 4.
Auth.
UDC 621.74.002.6:669.131
C4.8. Influence of Hot Plastic Deformation and
Austempering on Structural Peculiarities of Ductile Cast Iron. /V. Kopaleishvili,
M. Pankvelashvili, G. Beradze, L.Kotiashvili,
Complex
investigation is carried out in the combination of high-temperature
thermo-mechanical (HTTM) treatment and austempering influence on the isothermal
bainitic transformation processes and austenite products transformation
parameters in low-silicon ductile cast
iron. It is determined that the optimum combination of properties of DADI is
caused by the microstructure dispersion increase and the possibility to
regulate the variable content of retained (after phase transformation)
austenite amount; this indicates a higher overloading capacity of DADI. 3 il, tab. 2, bibl 6.
Auth.
UDC 666.221.3
C4.9. Glass Matrix for Composite
Materials on the Basis of Manganese-Containing Carbonate Ore. /I. Berdzenishvili/.
Proceedings of
the Georgian National Academy of Sciences, Chemical Series. – 2007. – vol.33. -
# 1. – pp. 108-111 - rus., abs.: geo., eng.
Glass matrix for composite materials on
the basis of manganese--poor carbonate ore have been
synthesized for accepting heat resistant composite cover on titanium. Frits
were developed by taking into consideration the low thermal expansion
coefficient of titanium compared with steels. The processes of glass formation
in manganese-containing zirconium silicate glass charges are researched and the
existence of Mn3O4 (700oC) and ZrSiO4,
SiO2 (1100oC) at temperatures preceding charge melting
are proved. Zircon in the inspected charges as well as quarts partially acts in
solid – phase reactions, but the main part is solved in liquid phase at
1200-12500C. Optimal technological regimes of boiling were
determined for the developed glass and it is studied their physical- chemical
properties.
Auth.
UDC 621.762.242
C4.10. High Temperature Oxidation of
Methane on Palladium and Manganum-Palladium Catalysts. /V. Bakhtadze, R. Djandjgava, M. Padjishvili, Ts.
Jaoshvili, N. Chochishvili/. Proceedings of the Georgian National Academy of Sciences, Chemical
Series. – 2007. – vol.33. - # 1. – pp. 112-115 - rus., abs.: geo., eng.
It has been shown, that the activity of
MPK-1 type manganum-palladium catalysts in reaction of high-temperature
oxidation of methane corresponds to activity of catalysts with significantly
higher palladium content.
Auth.
UDC 678.029.438
C4.11. Destruction of Polymeric Materials in Process
of Formation of Welded Connection at Ultrasonic Welding. /N. Dolidze, M. Datuashvili/. Proceedings of the Georgian
National Academy of Sciences, Chemical Series. – 2007. – vol.33. - # 1. – pp.
116-118 - rus., abs.: geo., eng.
The mechanism of formation of welded connection at ultrasonic welding of polymers represents a combined process including the thermal, mechanical, and acoustic phenomena, which results in the warming up and orientation of polymers in a zone of connection. A method of IR-spectroscopy to research a nature of processes proceeding on border of contact at ultrasonic welding of artificial fur has been applied. The analysis of results of research has shown, that in artificial fur as a result of action of ultrasound there are complex physical and chemical changes, which cause partial destruction and reduction of durability of welded connection.
Auth.
UDC 678.029.438
C4.12. Research of Molecular-Mass Characteristics of
Welded Seam of Artificial Fur. /N. Dolidze, M. Datuashvili/. Proceedings of the Georgian
National Academy of Sciences, Chemical Series. – 2007. – vol.33. - # 1. – pp.
119-121 - rus., abs.: geo., eng.
The
importance of explosive loading of a welded seam of a fibrous polymeric material
essentially depends on molecular weight and molecular-mass distribution.
Research of structural transformations in a welded seam of artificial fur
taking into consideration the molecular-mass characteristics was carried out
with application of a gel-penetrating chromatography method. The analysis of
the data testifies that at ultrasonic welding molecular weight of a
polyacrylonitrile fibre decreases, destruction occurs, and physical-mechanical
properties of a welded seam of artificial fur are worsened accordingly.
Auth.
UDC 669-491
C4.13. Pipe
Rolling from Continuous Cast Metal. /I. Zhordania,
The approach to manufacturing of high quality pipes as
a result of solid and hollow billet rolling from continuous cast metal is
shown. Optimal parameters of piercing, temperature of piercing and piercing
rolling mill rollers speed have been experimentally established.
Auth.
UDC 669.046.74'782'891 '787' 1:541.123
C4.14. Thermodynamic Analysis of the Charges Used at Medium-Carbon Ferromanganese Melting. /J. Bagdavadze, M. Chumbadze, G. Gvelesiani, K. Ukleba/. Problems of Metallurgy, Welding and Materials Science. – 2007. - #1(15). - pp. 8-11. - rus.; abs.: geo, rus, eng.
The results of thermodynamic calculations of silicothermal reduction of the charges of two structures: 1. MnO2 - 45,8, SiO2 - 6,3%, CaO - 15,5%, Fe2O3 - 1,3%, Mn - 24,1 %, Si - 5,9%, Fe - 1,1 and 2. Mn2O3 - 50,4%, SiO2 - 3,7%, CaO - 11,7%, Fe2O3 - 1 %, Mn - 25,7%, Si - 6,3%, Fe - 1,1 %, are presented using program ASTRA-4 . The results of calculations are given in the form of diagrams. Calculations for both charges have shown that the process basically comes to an end below 1200 K and full reduction of manganese does not occur. Obviously, during smelting in electric furnace at higher temperature there occurs full reduction of manganese from MnO by means of electrode graphite.
Auth.
UDC 621.753.5:669.054.8
C4.15. Development and Mastering of Cast Metal Cutting Tools of High Operating Features with Scrap Metal Remelting. /O. Mamatsashvili, B. Margiev, N. Gonjilashvili, Z. Mushkudiani, A. Gabisiani/. Problems of Metallurgy, Welding and Materials Science. – 2007. - #1(15). - pp. 12-15. -rus.; abs.: geo, rus, eng.
Possibility of improving operating features of high cutting steel P6M5 for applying in cast tool production has been indicated. For practical purposes, optimization of steel composition has been done by introducing nitrogen and small additions of nitride generating elements of titanium and boron. Simultaneously the content of chrome has been decreased and content of carbon increased. The final improvement of steel structure and characteristics has been achieved by preliminary high temperature treatment of cast slabs.
Auth.
UDC 669.168:669.15'782'74-198
C4.16. Development, Investigation and Industrial Assimilating of Silico-Manganese Smelting Using Metal Concentrate. /Z. Simongulashvili, B. Maisuradze, B. Japaridze, M. Mikeladze/. Problems of Metallurgy, Welding and Materials Science. – 2007. - #1(15). - pp. 16-20. -rus.; abs.: geo, rus, eng.
The results of test and industrial smelting of silico-manganese using slam concentration product - metal concentrate - are presented. Because of fine dispersion its briquetting is proposed together with manganese concentrate and manganese containing dust. The effectiveness of using metal concentrate is established, it allowing increasing manganese usage, improving technical and economical indices of the process, decreasing metal cost and preventing environment contamination.
Auth.
UDC 539.67
C4.17. Dislocation Nonelasticity of Monocrystalllne Si0.98Ge0,02 Alloy Doped by Arsenic. /I. Kurashvili, G. Bokuchava, E. Sanaia, L. Gabrichidze, V. Badzoshvili, T. Mkheidze, G Darsavelidze/. Problems of Metallurgy, Welding and Materials Science. – 2007. - #1(15). - pp. 21-27. -rus.; abs.: geo, rus, eng.
Nonelastic properties of monocrystalline Si0.98Ge0.02 alloy caused by dislocation motion have been investigated. The mechanical relaxation processes have been revealed during torsional vibrations and their activation characteristics have been determined.
Auth.
UDC 621. 793.7:533.9
C4.18. The Effect of Laser
Heat Treatment on the Structure and Properties of Steel and Cast Iron. /A. Gordeziani, N. Kenchiashvili, S. Kurashvili, G. Gordeziani/./.
Problems of Metallurgy, Welding and Materials Science. – 2007. - #1(15). - pp.
28-32. -rus.; abs.: geo, rus, eng.
Parameters of laser beam hardening of steels of grade 20X, 40X, 45, 8XÃT, Y10, IIIX15 and cast irons of grade C×15, C×21 to get maximum depth of thermal effect and hardness have been ascertained. For each selected material metallographic investigation of specimens hardened with ascertained regime have been carried out.
Auth.
UDC 669.504
C4.19. Researches Concerning
the Possibilities of Receiving Complex Alloys with Nontraditional Carbon
Containing Reducing Agent. /B.
Gogichaishvili, T. Buchukuri, T. Tsertsvadze, B. Buchukuri/. Problems of
Metallurgy, Welding and Materials Science. – 2007. - #2(16). - pp. 4-7. -rus.;
abs.: geo, rus, eng.
Experimental results of receiving manganese containing complex alloys from chemical and metallurgical waste products are given. Nontraditional carbon containing materials such as worn-out tires and cases of depreciated accumulators were used as reducing agent.
Auth.
UDC
621.983/984
C4.20. Press Tool Device for Heading of Internal Combustion Engine Discharge Valve. /Z. Lomsadze, D. Gorgodze, D. Lomsadze/. Problems of Metallurgy, Welding and Materials Science. – 2007. - #2(16). - pp. 8-11. -rus.; abs.: geo, rus, eng.
For heading and simultaneous forming of fire-resistant part of rod blank in order to receive valve head, the construction of horizontal heading form fastened in work space of double-stand crank press is elaborated. Metal for valve head is collected with electric heading, while press effort which with the help of wedge surfaces is transmitted from vertical to horizontal direction, is used for forming.
Auth.
UDC 669.046.25'787'784:541.123
C4.21. Thermodynamic Analysis of CoO Reduction with Spirit (C2H5OH). /A. Kandelaki, J. Bagdavadze, Z. Tsikaridze/. Problems of Metallurgy, Welding and Materials Science. – 2007. - #2(16). – pp12-15. -rus.; abs.: geo, rus, eng.
In the present work the complete thermodynamic analysis of reduction of CoO by gaseous spirit (C2H5OH) with application of the program ASTRA-4, which initial structures are chosen on the basis of the following 3 reactions (change of a ratio CoO with spirit) is spent: CoO(Cd) + C2H2OH(gas); CoO(Cd) +C2H2OH(gas); CoO(Cd) + C2H2OH(gas); The calculations are performed for atmospheric pressure 101 kPa in the temperature range 300-1500K. The basic results are presented in the form of diagrams (dependence of the contents of components on temperature).
Auth.
UDC 662.74
C4.22. On the Problem of
Coal Coking Under the Pressure of Own Volatiles. /A. Gagnidze,
Production of metallurgical coke from Tkibuli type gas coals with traditional methods still is not possible. Coking under the pressure of own gases can solve this problem. Theoretical preconditions connected with coking of the mentioned coals are discussed.
Auth.
UDC 621.746.6:669.13
C4.23. Investigation of the Character of Preshrink Age Expansion During Crystallization of Gray Cast Iron. /R Gvetadze, G. Mumladze/. Problems of Metallurgy, Welding and Materials Science. – 2007. - #2(16). – pp 21-26. -rus.; abs.: geo, rus, eng.
The peculiarities of changing temperature, preshrink age expansion and stresses in cast iron samples are considered. The character of kinetics of preshrink age expansion development is stated to cause formation of shrinkage defects.
Auth.
UDC 669.187.26
C4.24. The Effect of Slag Quantity on Metal Desulphurization. /A. Bochorishvili/. Problems of Metallurgy, Welding and Materials Science. – 2007. - #2(16). – pp 27-32. -rus.; abs.: geo, rus, eng.
The researches are carried out for detection of slag quantity effect on metal desulphurization under direct and alternating current. It is stated that in liquid metal-slag system, in the case of different slag quantity, slag desulphurization power decreases with the increase of slag quantity because of temperature drop. Graphical picture of desulphurization level is shown for all given versions.
Auth.
UDC 691. 791.5
C4.25. Technology of Orbital Welding of Position Butts of Pipelines with Combined Process. /M. Savitski, A. Savitski, G Melnichuk, A. Lupan, V. Vashchenko/. Problems of Metallurgy, Welding and Materials Science. – 2007. - #3(17). – pp 3-9. -rus.; abs.: geo, rus, eng.
The study shows that one of the directions of improving the quality of root welds in position butt joints, particularly in pipeline repair in difficult-to-access places, is nonconsumable electrode welding using activating flux. This process ensures formation of the root weld in all positions without a substrate at toe thickness of up to 6 mm. Groove filling is performed by gas-shielded consumable electrode or flux-cored wire mechanized welding with forced weld formation. Depending on root thickness welding is performed in pulsed mode or by a constant power arc.
Auth.
UDC 621.791.019:658.562
C4.26. Development of Adhesion-Bonding Methods of Reconditioning and Reinforcement of Elements of Industrial and Transportation Structures. /Y. Vasiliev, L. Parshutina, A. Chukashkin/. Problems of Metallurgy, Welding and Materials Science. – 2007. - #3(17). – pp 10-17. -rus.; abs.: geo, rus, eng.
The currently available methods of repair of metal structures and process equipment using polymer composite materials have been analyzed. Special adhesive compositions and adhesion-bonding technology have been developed for forming multilayer metal-plastic couplings for repairing local defects in pipelines without interruption of product transportation. The influence of the change of stresses in the defective pipe wall depending on the elasticity modulus and repair coupling thickness has been studied.
Auth.
UDC 620.193
C4.27. Electrochemical
System of Active Monitoring of Corrosion State of
Electrochemical system of active monitoring of corrosion condition of main pipelines has been developed. Criteria have been singled out which provide quantitive characterization of the proneness of main pipelines to corrosion processes. According to the model of active electrochemical monitoring the pipeline can be divided into three types of sections: with a "very high", "increased" and "low" proneness to corrosion failure. The model of active electrochemical monitoring of corrosion condition of main pipelines has been tried out at examination of "Urengoy-Pomary-Uzhgorod" pipeline.
Auth.
UDC 691.791.5
C4.28. Self-Sufficient
Welding-Technological Stations Based on Inductive-Capacitive Transducers. /A. Korotynski, V. Kirichenko,
Circuits with combined powering of the welding arc have been developed and experimentally tested. They make the basis for development of self-sufficient welding-technological stations (SWTS). Different variants of SWTS embodiment have been studied and optimized, and new structures and their functioning algorithms have been proposed. The proposed structures have been tested in the mode of MMA-welding, multistation MMA-welding and self-shielded wire CO2 welding. Results of testing of SWTS for CO2 welding with investigation of its technological and service properties are given.
Auth.
UDC 669.14.018.29.046:557.198
C4.29. Industrial Approbation of Al-Mn-Si Alloy Deoxidation of Tube Mark Steels. /J. Mosia, A. Julukhidze, G. Nikolaishvili, V. Mgeladze/. Problems of Metallurgy, Welding and Materials Science. – 2007. - #3(17). – pp 42-46. -rus.; abs.: geo, rus, eng.
The results of deoxidation of tube mark steels with AI-Mn-Si alloy in industrial conditions are considered. Main attention is paid to accumulation of complex data on physical-chemical properties of the alloy and its interaction with the treated melt and on the steel quality for rolling. The necessity of organization of processing of aluminum containing Ferro-alloys is dictated by both, positive results of their probation and accumulation of unlimited reserves of different types of alumino-silicate raw material.
Auth.
UDC 569.67
C4.30. Investigation of
Physico-Mechanical Properties of Si99.99ge0.01 Alloy
Doped with Boron. /I. Kurashvili, V.
Badzoshvili,
Influence of doping with B on IF spectra, shear modulus and values of microhardness of monocrystalline alloys has been studied. Changes of the defects migration energy and mechanical characteristics, caused by the changes of B concentration have been analyzed from the point of view of blocking and releasing from links of different dislocations.
Auth.
UDC 621.791.92
C4.31. Criterial Equation for Substantiation of Optimum Modes of Worn-Out Members Renewal with Automatic Hard-Facing under Flux Layers. /Sh. Chalaganidze, A. Berechikidze/. Problems of Metallurgy, Welding and Materials Science. – 2007. - #4(18). – pp 9-13. -rus.; abs.: geo, rus, eng.
Using the theory of similarity and dimensions the criterial equation of the technological process of worn-out members' renewal with automatic hard-facing under flax layers is derived for stating mathematical union of wear-out and the factors affecting on hard-facing process.
Auth.
UDC 621.771.8
C4.32. Research of Kinetics
of Development of Durability of Steel-Aluminum Connection in Solid Phase. /D. Nozadze, D. Macharadze,
Samples of layered composite of steel-aluminum are received by method of diffusion welding and pressure performed and the results of metallographic researches and mechanical tests on the samples are presented. It is stated, that in the zone of steel-aluminum contact an intermetallic layer FeAl3 is formed. For the analysis of the received experimental data on kinetic growth of durability of connection of materials in the solid phase, the technique of definition of kinetic characteristics of the process on the basis of analytical solution of the fundamental equation of kinetic development of a new phase is proposed.
Auth.
UDC 621.791.927
C4.33. Plasma Technology of Wc-Co Melting and Its Spraying on the Steel Surface. /A. Tsilosani, Z. Okrostsvaridze/. Problems of Metallurgy, Welding and Materials Science. – 2007. - #4(18). – pp 20-28. -rus.; abs.: geo, rus, eng.
The development of the technologies of getting of protective coatings of machine unites and components based on wolfram-carbide are extremely urgent in the field of new materials technology.
However, the data about the application in plasma spraying of casting wolfram carbide alloys with the cobalt addition are practically absent in the technical literature. The purpose of this work was getting wolfram-carbide cast alloys with cobalt, their application by plasma spraying and study of the properties of coatings, as well as the structural transformations at coating-base interface after the thermal treatment of samples. The study showed that the most wear resistance had the coating received from WC+4% and WC+8%Co compositions. The increase of cobalt composition in the system causes the decrease of WC composition and the formation of such compounds, as W2C, W3CO3C and of solid solution based on wolfram that have a negative influence on the quality and properties of coatings.
Auth.
UDC 621.745.43:669.131.6
C4.34. Prognostication of Gray Cast Iron Mechanical Properties According Dilatometric and Dynamometric Indicators. /R Gvetadze/. Problems of Metallurgy, Welding and Materials Science. – 2007. - #4(18). – pp 29-36. -rus.; abs.: geo, rus, eng.
An equipment for recording inherent deformations and stresses in the process of gray cast structure forming iron and kinetic curvatures of voltages is developed. It is stated that dilatometric and dynamometric parameters defined through aforesaid curvatures can determine cast iron mechanical features within 10 minutes.
Auth.
UDC 622.235
C4.35.
Here are
presented the companies producing comparatively ecologically pure simplest
explosives and rang of their products that are widely accepted at consumers
market. The assortment and the prospects of materials used for explosives
manufacturing at Georgian market enabling to develop and create ecologically
pure explosives on place are considered.
Auth.
UDC 629.113.004
C4.36. Revealing of the Parameters of Quarry Cars
Reliability. /V. Lekiashvili,
Parameters of reliability of automobiles “Belaz” working in quarries are determined and the analysis
of these parameters is executed. The received data allow improving and
optimizing methods of cars reliability control.
Auth.
C5. Mechanical Engineering. Tool Engineering.
UDC 621.791.927
C5.1. Exploration of Durability against Porosity
While Fusing with Experimental Powdery Wire.
/M. Babutsidze, Z. Sabashvili, D. Tavkhelidze, G. Dadianidze,
Porosity is the most widespread defect of arc welding. For major items existence of pores in fused metals is inadmissible. Because of the above, one of the principal criterion of the evaluation of quality of materials to be fused is its disposition to porosity. The results of investigation of stability against porosity of fused materials developed in the Technical University of Georgia are considered in the present paper.
Auth.
UDC 669.35.017
C5.2. Microalloying Effect on Structure and Mechanical Properties of Aluminum Bronze BrAl1OFe3Mn1.5. /V. Kopaleishvili, G. Mumladze, G .Gotsiridze, O. Barbakadze, L. Kotiashvili/. Transport and Machinebuilding. – 2007. - #1. – pp. 11-21. – geo. abs.: eng., rus.
Microalloying (1-0; 2-0.1%Si; 3-0.I%Ti; 4-0.I%Si+0.l %Ti; 5-0.05%Mo; 6-0.I%Mo; 7-0.I 5%Mo; 8-0.I%Mo+0.I%Ti; 9-0.I%V) of aluminum bronze BrAIlOFe3Mn1.5. is carried out. Mechanical properties of cast samples are tested (sb , sg, d5, Y, Sk). Metallographic research is conducted. Microalloyng with titanium (Ti=0.l%) and vanadium (V=0.l%) improves hardness and plasticity parameters of aluminum bronze. Combined alloying with molybdenum (Mo=0.l %) and titanium (Ti=0.l%) increases mechanical properties of this alloy (sb=691 N/mm2, sg=310 N/mm2, Sk=890 N/mm2, d5 =22%, Y =29%): In the alloys with optimum chemical composition (e.g. 5.3-5.8) spheroid microconstituents are observed.
Auth.
UDC 614.05
C5.3. Driving Gear of Coplanar Motion of
Rotary-Grinding Machine Cutters. /Z.
Balamtsarishvili, Z. Chitidze, T. Mchedlishvili,
Proposed article is dedicated to driving gears of a coplanar motion of grinding lines, in particular, mechanism of a coplanar motion of polishing instruments at processing of circular section bar parts. It is determined, that driving provides the necessary difference in the speed of cam and rotor, as well as necessary speed of a coplanar of grinding instruments.
Auth.
UDC 669.1.017: 621.774.35
C5.4. Controlled Rolling of Smooth (Weldable)
Seamless Pipes on Rolling Mill “400”
/ Z. Kopaleishvili,
New technology (Certificate #1647027 SU) for production of pipe steel is created improving grade of metal and pipes. Aluminum (AI=100 %) and Ferrotitanium (Ti=30%) rates (0,6 kg/ton and 0,5-0,75 kg/ton accordingly) are defined in 0,20C0,02Ti steel (Certificate #1544833 SU) intended for production of smooth (weldable) seamless pipes. Aluminum rate is increased up to 0,90 kg/ton and Ferrotitanium rate up to 1,5-2,0 kg/ton in 0,20C0,02Ti steel for improving separation (breaking) of rolled stock especially in summer. This ensures semibrittle fracture of rolled stock (ao,25=50+40J/cm2-melt. #6511; ao,25= 60+10J/cm2 - melt.#1536) and improved mechanical properties in the pipe rolling shop (ao,25=60+110J/cm2- melt.#6511; ao,25=50+80J/cm2- melt. #1536). Self-organization of the technological cycle "steel - end product" is evident - production of smooth (weldable) seamless pipes on rolling mill “400” by means of controlled rolling changing chemical composition.
Auth.
UDC 674.05
C5.5. Lengthwise Movement Driving Gear of the
Rotary-Grinding Rig Cutters. /Z.
Balamtsarishvili, Z. Chitidze, T. Mchedlishvili,
The article is dedicated to driving gear rotor of grinding line, in particular to the lengthwise movement gear of grinding tools. It was established that the driving gear provides the necessary rotating frequency of the lobe and the rotor, as well as the necessary minimal speed of lengthwise movement of the grinding tools.
Auth.
UDC 677.03
C6.1.
Research of
Strike Strings of High-Designed Fibres. / M. Datuashvili,
In the work
there is discussed the strike string tightening process while creating the
high-designed fibres on physico-mechanic
data of the clothes. The research results showed that the tightening of
the string occurs while working and it is stopped when we don't work. To regrow
the results of the sewing physico-mechanical showings white exploitation we get
the recommends to use the difficult constructions in the sewing.
Auth.
UDC 687.157
C6.2.
Study of Material for Overall Fruiterer. /K. Chirgadze,
In work is considered actual questions labour guard and necessary sanitary-hygienic rates for professional activity of fruiterer. Explored pesticides used in fruiterer on toxicity and recommended materials for storing up special clothes. On the basis of analyze material's fibrous composition and their action with pesticides draw out a reference: to store up special clothes for the professional group of fruiterer with cotton by special impregnate.
Auth.
C8.
Construction. Architecture
UDC 624.044.2
C8.1. Several Issues of Premises Calculation – Taking into Account Plastic
Deformation. /R. Imedadze, L. Zambaxidze, L. Imedadze,
Static and dynamic calculation method is given
and processed in the work for spatial frame systems. Calculation method of
plastic deformation for flat frame constructions in case of loads effecting
with great intensity thereon is discussed, which results tensions in some of
its cross sections, more than it corresponds to flexible margins.
Auth.
UDC 692.297:691.328
C8.2. Determination of
Critical Force in Rectangular Cut Columns of Reinforced Concrete. /L. Avalishvili D. Tsanava
V. Tepnadze/. Building. – 2007. - #2(5). – pp. 61-64 - geo., abs.: rus.,
eng.
In the works on the basis of theoretical investigation there is offered Compact formula for fixing critical force for eccentrically pressed rectangular cut columns of reinforced concrete instead of normative difficult formula.
Auth.
UDC 624.15:681.3.068
C8.3. Automatic Calculation of Foundation of
Premises. /G. Lutidze,
Attempt of
calculating foundations of premisis,
namely plate calculation is discussed in the work taking into account
phisical-mechanical characteristics of foundations. Calculation flow chart is
given and operation principle of each block is described in the article, which
is thereafter simply realized through computer technologies.
Auth.
UDC 692.53
C8.4. Methodic of Selecting
Rational Construction and Type of Floors of
Methodic of
selecting rational constructions and types of floors in industrial premisis is
discussed. List and requirements necessary for the exploitation terms of floors
for engineering a building which are
specified for the floors taking into consideration a number of specific
moments.
Auth.
UDC 691.714
C8.5. About Some Flaws of Rigidity Conditions of Composed, Welded Steel
Crosscut Beams. /N. Berishvili,
In this work it is described a calculation method of welded steel joints having composed cross-sections and a critical analysis of the existing method is given. It is proposed a new, more rational rule of calculation, which is based on a composition of a table of new ranges due to designing cross-section by the recommended method.
Auth.
UDC 694.5
C8.6. Transportation and Enlarged Arrangement of Threejoint Truss Bar Farms. /M. Chanturia,
Transportation and arrangement variants of threejoint truss bar farms as well as description of various equipment and installation and maintenance conductors and their application methods are specified in the article.
Auth.
UDC 691.54
C8.7. The Influence of the Mineralogical Compositions of Cement and Sand
Solutions Solidity and Shearing Strength. /M
Turdzeladze, T Nereklishvili, I Khergiani/. Building. – 2007. - #2(5). – pp. 101-109 - geo., abs.: rus., eng.
In the work it investigated the influence of the mineralogical and chemical compositions of shearing strength of the solution. The tests were carried out on the beams made of cement and sand solution, in order to see the kind of bend caused by one concentrated strength. It's proved that the composition of the cement marks the considerable influence on the solidity and deformation of the solution.
Auth.
C9.
Agriculture and Forestry.
Fishery
UDC 631.471
C9.1. Soil Contamination
with Heavy Metals in Imereti Region (Georgia). /T. Urushadze, G.
Ghambashidze, W. H. Blum, A. Mentler/. Bulletin of the
Soil
contamination with heavy metals – Cd, Cu, Mn, Ni, Pb and Zn was studied in the
main soil types of Imereti region. An attention was paid to diffusion pollution
and metal distribution along the river valleys representing the major flow
paths for transporting different pollutants including heavy metals. The results
of the laboratory analyses were compared to maximum permissible concentrations
and guide values defined by Georgian legislation. An attempt was made to
establish background concentration for heavy metals in studied soils and to use
them as reference values in assessment of soil pollution. The comparison shows
that the concentrations of Cd, Cu, Mn, Ni, Pb and Zn exceed their background
contents in some soil samples.
Auth.
UDC 633.34
C9.2. On a Possibility of Stimulation the Growth Biomass and Yield Seed of Soya by Application of Phillipsite and Phillipsite-Containing Organo-Zeolite Fertilizers. /T. Andronikashvili, M. Kardava, M. Gamisonia/. Proceedings of the Georgian National Academy of Sciences, Chemical Series. – 2007. – vol.33. - # 1. – pp. 105-107 – geo., abs.: rus., eng.
According
to the field experiments, the correlation of the podzolic, acid, infertile
(pH=3.9 unit) soils of Guria Region and the phillipsite-containing rock and
fresh manure mixture have been investigated. This composition neutralizes the
acidity of the soil and increases its fertility. The stimulating energy of this
composition is demonstrated by its ability to increase biomass and yield seed of
soya. When 20 t/ha of phillipsite is applied this gain is 48.4 and 51.7%. With
application of "Zeonak F" in the amount of 40 t/ha these values are
58.2 and 138.1%.
Auth.
UDC 633.15
C9.3. Some Agronomical Problems of the Georgian and
French Hybrids of Corn. /A. Devidze, D. Tsiklauri, K.
Fofkhadze, T. Akhaladze/.
Mitsatmokmedebis Institutis Shromebis Krebuli. – 2007. – XXXXV – pp. 18-23. –
geo., abs..: rus., eng.
The natural environment in Shida
Kartli enables on one place, in one and the same year to receive a grain yield
of autumnal barley and corn. Therefore we studied local and French hybrids: “
Tserovani-1”, “Baltis” and “Optomis”. The corn hybrids sown after barley have
given a grain yield approximately 5t\he on a background of a mineral fertilizer
N60P40K30, at consistency of stand of plants of 60
thousand on hectare.
Auth.
UDC 632.954
C9.4. The Influence of Herbicides on Kidney Beans Harvest and on Weeds in the
Conditions of Gare Kakheti Plateau /
Due to experiments carried out in
Kakheti Experimental Station in 1997-2001, the influence of herbicides
different dosage on kidney beans harvest and on weeds amount in it was studied.
It was found out that to get rid off weeds and to get a big harvest of kidney
beans it is better to take in Fuzifad (3,5 kg. per hectare) when the beans
plant is in 3-u leaf fase. The above measure increases the kidney beans harvest
bg 33-40% (2.5-3.0 c. per hectare) and gives 1.5-1.6 laris profit for each
spent lari.
Auth.
UDC 633.11
C9.5.
Tangent Method of Examination Biological Behavior of Seeds and Coarseness of
Seeds on Reaction of Plants in Agrocoenosis. /G. Jamburia,
It was
examined that the tangent method of biological behavior of seeds, coarseness of
seeds on the reaction of the plants in biocenosis, correlative connections
between the masses of seeds and their linear measures and, besides, by the new
method it is examined that the norm of sowing seeds it is necessary to be
corrected it from the quality of survived seeds.
Auth.
UDC 635.34/.36:631.8
C9.6. To Fertilize the Soil for Cabbage By
Concentrate Organic Fertilizer. /A. Saralidze,
There was worked out an organic
fertilizer - chicken dung, via reducing dampness by 16-18%. It contains 4,2%
nitrogen, 2,8 phosphor, 3,1 K2O.
Before planting sprouts, dung N34 kg is brought in the amount
equivalent to superphosphate norm, which is analogous by concentration. The
same amount is brought in the first and the second feeding and it guarantees
high crop with low cost, which is safe for men’s health.
Auth.
UDC 632.937:631.86/.87
C9.7. Guarantee for Rich Harvest. /R. Gakhokidze/. Monograph.
– 2008. – pp. 324. – geo. abs. eng.
The possibility of application of bioenergy activators in agriculture is considered. By means of them it is possible to adapt plants to various conditions - even plants on damaged soils are more resistant to diseases and pests and easily conform to adverse weather conditions. The use of bioenergy activators gives possibility to obtain ecologically clean, high quality harvests. Special attention is given to the use of ecologically clean agrochemicals, the test results for new Georgian biostimulator Biorag is given.
Auth.
674.021
G9.8. Dimensioning
and Qualitative Specifications of Beech Boards in
The results of research of dimensioning and qualitative specifications of round beech timber made in Georgia, according to which data it has been ascertained that the main sort-formative vices of beech timber is a false heartwood, heartwood rot, twigs, cracks and crookedness. It is mentioned that beech timber is attributed to the group of thick round timber with the average diameter of 65 cm. The data on distribution of vices in timber enable to decide the questions of rational and complex treatment of beech timber aiming at gaining maximum profitable output.
Auth.
C10. Water Economy. Melioration
UDC 627.841
C10.1.Hydraulic Equation of Streams with Different Densities. /T.
Voinich-Syanozhenski/. Hydro Engineering. – 2007. - ¹1(1). - pp. 22-30. – rus., abs.: geo., rus., eng.
There was given the basic analysis of getting hydraulic equations for
flows with different density.With en example of free surface quasihorisontal flows with different density,
considered the way of getting the systems of their hydrodynamic equations in
case, when don’t mentioned diffusion and permit Sen-Venan’s approximation
on dividing surface (Bu=0).
Auth.
UDC 627.841
C10.2.Stability of Transient Incurred by Rotation
Speed Changes in Centrifugal Pumps. /K. Arobelidze/. Hydro Engineering. –
2007. - ¹1(1). - pp. 31-35. – eng.,
abs.: geo., rus.,
eng.
There is
considered the centrifugal pumps with variable rotation speed in pump stations
providing more flexibility of water supply systems, as well as less electric
power consumption and water losses. The aim of this work is to define a
technique for finding the optimal sizes of various parameters necessary for the
design of water supply system and provide stability. There is described an
approach to a technique based on application of the Routh-Hurvitz criterion.
Auth.
UDC
627.841
C10.3.About Some Peculiarities of the Equation Linearization and Motion Stability of Long Waves Superposed on the Flows. /Sh. Gagoshidze/. /. Hydro Engineering. – 2007. - ¹1(1). - pp. 47-53. – rus., abs.: geo., rus., eng.
There
is considered the one-dimensional propagation of long waves on stationary flows
of arbitrary depth. An approach to the
linearization of a system of basic equations is discussed. A differential
equation is derived for long wave oscillations with dispersion, by means of
which the criteria are obtained for wave blocking and destruction on the
counterblow and for the formation of long interrupted waves on concurrent flows
of constant depth. A new relation is derived for calculating conjugate depths of a hydraulic jump, which, as different from
the widely used Bakhmeteff formula, is equally suitable both for a “perfect
jump” and for a ”wave-like jump”.
Auth.
UDC
627.841
C10.4. An
Assembly Type Low Water Head Spillway Dam. /Z. Gedenidze, T. Kvitsiani,
There is
presented a new weighted spillway dam, with the standardized water discharge
and height of a dam, which is intended to be manufactured in a factory in the
form of sections and then simply to assemble these sections on the site of the
construction. The reduction of the volume of
concrete in the body of an assembly type thin-walled spillway dam may exceed
50-60%, therefore its use is cost-effective not only for electricity
generation, but also for other purposes.
Auth.
UDC
627.841
C10.5. Stability
Conditions for the Dividing Surface of
the Streams with Different Densities. /L. Gogeliani, K. Magradze/. Hydro
Engineering. – 2007. - ¹1(1). - pp.
64-70. – rus., abs.:
geo., rus., eng.
There is considered the sustainability of contact surface between two flows with different density for specific task about engineering problem concerning determination of stormy stream aeration criteria on inclined fall. It was obtained the additional approximate critical condition for disturbance of sustainability. Bibl. 2
Auth.
UDC 628.1
C10.6.
Aspects of Estimation of Pump Stations Work
Reliability of Systems of Water-Supply. /L. Klimiashvili, V. Nachkebia, K. Khatiuri /. Hydro
Engineering. – 2007. - ¹1(1). - pp.
71-75. – geo., abs.:
geo., rus., eng.
In system of submission and distribution of water, one of the top-ranked constructions
is a pump-station on which normal work in many aspects
depends on the degree of water support for consumers. In the work of studying,
the analysis, an estimation and forecasting it is important the statistic data
of water submission and distribution. From operating about 40 pump stations of
Tbilisi data of refusals of 7 pump stations were studied statistically during the
exploitation, from which was established the percentage parity of refusals of elements
of the technical equipment. On the basis
of the analysis of these data was made an graph
of intensity of refusals and operating time. Using listed above
resources gives us the possibility to increase a degree of reliability of water-supply and
distribution to the consumers.
Auth.
UDC 628.1
C10.7.Wastewater Treatment of the Phenols by
Alumina-Silicate.
/M. Kobakhidze, M. Tsitskishviki/. Hydro Engineering. – 2007. - ¹1(1). - pp. 81-88. – geo., abs.: geo., rus., eng.
There are presented the results of researches in the
field of application natural and synthetic zeolites and other supports in
quality of sorbents of phenol. It has been investigated the absorptive
properties of zeolites at removal of phenol from a solution in
tetrachloromethane and water. The measurements for water solutions of phenol in
concentration of 0,1-0,45 mol/l are carried out also. It was established earlier,
that the adsorption grows in these limits and it has linear dependence on
factor of refraction. The amount of phenol
grows with increase of concentration of solutions. Most active adsorbent
is mordenite-H. Silica KCK is active phenol adsorbent, also has appeared inefficient
at removal phenol from water solutions owing to adsorption of a plenty of
water. The opportunity of oxidation of phenol adsorpted on zeolites by a mix ozone with oxygen is
investigated. It will create an opportunity for clearing phenolcontaining
wastewater at realization of adsorption and ozonation processes together. It
has appeared, that the oxidation passes before complete decomposition of
phenol. Even traces of phenol are not found out in water. Tabl. 1, bibl. 7.
Auth.
UDC
551.47
C10.8. Method
of Calculation of Water Stormy Flow in Closed Reservoir. /I. Kadaria/. Hydro
Engineering. – 2007. - ¹1(1). - pp.
125-131 – geo., abs.:
geo., rus., eng.
There is offered the method of calculation of
the water level quasi-static change in lakes and reservoirs after long term
influence of wind, which fully satisfies the
equation. Maximal water level rise is established by wind direction on
opposite side of reservoir and possible denudation conditions of bottom on the
near bank. There is brought an example of calculation. In hydro building it is
essential to carry such calculations, because in seaside areas material damage caused by water stormy flow is more
than the damage caused by wave
influence.
Auth.
UDC
628.1
C10.9. Using the New
Generation’s Aluminsilicate Adsorbent for Reducing the Color in Drinking
Water. /N. Geladze/. Hydro
Engineering. – 2007. - ¹1(1). - pp.
132-138 – geo., abs.:
geo., rus., eng.
According
the experimental research is established, that adsorbent made from kaolin has
high decolorize activity with the addition of carbonate’s activation on the
base of magnetize, dolomite or magnum, adsorbent’s maximum effectiveness is
reached by the activeness addition at 20% amount from the masses of main
material (kaolin), burn temperature 800-9000C and burn duration
10-20 minute, by the store up technology. At the time of making the
alumina-silicate’s adsorbent with the industrial scale, by the economic and
technologic way is more profitable to use magnetite and dolomite as
activation’s admixture, as there is difficult chemical process beyond the base
carbon. Ill. 2, tabl. 3, bibl. 5.
Auth.
UDC 627.841
C10.10. Stability of a Free Surface of a Turbulent Water Stream. /T. Voinich-Sianozhentski, L.
Ghogheliani/. Hydro Engineering.
– 2007. - ¹2(2). - pp. 7-16 – rus.,
abs.: geo., rus.,
eng.
It was
deducted the condition of existence of stability of a free surface of flat
turbulent stream with the uniform mode of current and free surface, in the case
when the length of waves, spreading (expansion) on free surface of water stream is small
in comparison with its thickness and the layer of air environment over it.
Auth.
UDC 627.841
C10.11.The
Movement of Fluid in Pipelines with Various Debit. /T. Kvitsiani, Z. Gedenidze/. Hydro Engineering.
– 2007. - ¹2(2). - pp. 17-22– rus.,
abs.: geo., rus.,
eng.
In this paper, on base of theoretical investigation of
fluid with variable mass lengthways of flow, the equation, circumscribing the
steady-state motion of fluid in the perforated pipelines for various case of
segregation of expenditures is obtained. Equation is integrated for the cases
of the constant pressure along the pipeline.
Auth.
UDC 627.223.6
C10.12. Waves in
Debris Flows. /O.
Natishvili/. Bulletin of the
Mixture of structural debris flow is considered
in the form of quasicontinuum. Wave phenomena are treated in the limits of
one-dimensional problem. The processes of motion of long, continuous, dynamic
and monoclonal waves are investigated. The problems of stability of initial
uniform motion of debris flow in steep gradient beds are analyzed. Attention is
paid to the increase of wave at inlet of pressureless flow in the pressure
construction.
Auth.
UDC 631.459
C10.13. Modern Methods of Calculating the Prediction of Water Erosion. /Ts. Mirtskhoulava/.
Bulletin of the
The method of predicting erosion
is further perfected. The coefficients entering the former equation are
specified through the use of the so-called fatigue theory of erosion.
Auth.
UDC 656.25
C12.1. Theory-Multiple Interpretation of Transport Complex Conception. / A. Dundua. G. Kvanta1iani/. Transport and Machinebuilding. – 2007. - #1. – pp. 57-61. – geo. abs.: eng., rus.
In the work, conception of transport complex by means of using methods of modern algebra and logics has been defined. It is shown that transport model appears algebraic grate and structural scheme of stated complex has been worked out by means of its use.
Auth.
C13.1.
Blood Flow Biomechanics and Initial Factors for the Atherosclerosis
Development.
/F. Todua,
M. Beraia/. Bulletin of the
It is accepted now that homodynamic forces are the localizing factors
in atherogenesis, but conclusions about the reasons of the vessel wall damage
are inconsistent. The purpose is to study and reveal the initial factors of
atherogenesis in the aortic arch. 25 men from 17 to 45 years old have been
investigated by MR angiography on Siemens-Avanto. In the aortic arch at the
time of protodiastole the blood flow is separated into opposite directed
streams and the flow arrest with the flat flow profile is noted in discrete
sites of the aorta. Blood protodiastolic acceleration is 6 times higher than
that in the systole, and shear stress exceeds the verge of the endothelial
endurance. The circular blood flow at the aortic arch in protodiastole is
characterized by high acceleration, and the local pressure in flat profile can
damage internal layer of the vessel.
Auth.
UDC 616.1
C13.2. Gene Therapy for Cardiovascular Disease. /N. Kipshidze, P.
Iversen/. Bulletin of the
PTCA treatment has become more extensive and gained favor as an alternative treatment for coronary artery bypass grafting (CABG). PTCA leading to wound-healing responses that include thrombosis, smooth muscle proliferation and migration, elastic recoil and vascular remodeling that may contribute to recurrent obstruction or vessel narrowing referred to as restenosis. Recent studies have focused on the use of antisense compounds to prevent restenosis following PTCA. Until recently, the clinical applicability of antisense technology to the problem of restenosis has been limited due to a relative lack of target specificity, slow uptake across the cell membranes, and rapid intracellular degradation of the antisense oligonucleotides. The recently introduced AVI- 4126 (Resten-NG) belongs to a new family of molecules known as the phosphorodiamidate morpholino oligomers (PMO). The most robust of the observations to date include the fact that AVI-4126 is safe and effective in different vascular disorders in multiple species and conducted by multiple investigators. Three different methods for local and systemic delivery have been described, each with advantages and limitations. Efficacy in animal models is encouraging. Further, clinical trials with AVI-4126 indicate that the agent is very safe. The last remaining question if AVI-4126 a place in the future therapeutic regimen for the prevention of restenosis and other disorders remains unanswered.
Auth.
UDC 616-005.4:613.98
C13.3. New Approaches to
Treatment of Gerontologic Patients with the Presence of Ischemic Heart Disease
(IHD) with Syndrome of Stenocardia. / N.
Kipshidze, T. Zubiashvili/. Bulletin of the
Interest in the quality of life of elderly people and state of health of old-aged patients has recently considerably increased. Special attention is given to cardiovascular pathology which is the main reason of death for this category of patients. The albuminous component acquires an increasing significance in modern representations about atherosclerosis and cholesterol theory is gradually replaced by lipoproteidic one. The purpose of the present work was to study efficiency of joint application of vitamin E intramuscularly and oral administration of the combined preparation “Triovit”, containing several antioxidants (carotene, vitamin E, vitamin C and selenium), in gerontologic patients with (IHD) and syndrome of stenocardia and hyperlipidemia. It is proved for the first time that vitamin E decreases not only cholesterol, but also low density lipoproteids (LDL) and triglycerides (TG). At the same time, vitamin E increases the level of high density lipoproteids (HDL). The obtained changes are maintained in patients for a long time after termination of reception of the preparation. Application of vitamin E in patients with ischemic heart disease promotes improvement of the clinical period of the disease.
Auth.
UDC 616-089.843:616.13.089
C13.4. Revascularisation
of Arterial Prosthesis and Autovenotransplant. /N.
Javakhishvili, M. Komakhidze/. Bulletin of the Georgian National
Academy
After implantation of prosthesis in the artery, incapsulation and formation of neointima, there develops “vasa vasorum”, which penetrates into the prosthesis from the outside and from the inner side – from the prosthesis lumen. Internal initiated vessels, contacting with the external, anastomose with each other. In the prosthesis internal lining original capillary network of hexahedral form is produced. This geometric form depends on decusation of longitudinal and transversal filaments of prosthesis fibers. Practically the importance of neointima vascularization lies in the fragility of capillaries, resulting in small hemorrhages formation. Neointimal capillary topography, their exclusive location to prosthesis lumen, these small hemorrhage foci can simulate a coagulation chain reaction in the prosthesis. After autovenoplasty in the artery and after restoration of blood flow the autovenotransplant sharply extends under arterial pressure, and there was no case of rupture or aneurism development in the transplanted veins. In some weeks the transplanted vein changes sharply, the wall thickens and, which is of great importance, vascularization of vein changes and becomes similar to the vascularization of the artery, into which the vein has been transplanted.
Auth.
UDC 616.89-008.454:616.12-008.331.1
C13.5.
Relationship between Depression and Religiousness with the Atherogenic Profile
of Lipoproteins in Arterially Hypertensive Patients. /N.
Kipshidze, S. Kabisashvili , N.
Kakauridze /. Bulletin of the Georgian National
Academy
The research carried out during the last two decades made it possible to confirm from the standpoint of the proof-based medicine the relationship of stress, mental depression and anxiety with the cardiovascular system diseases (CVSD). The majority of depressive persons has been found to manifest a higher percentage of a coronary heart disease (CHD), arterial hypertension and other cardiovascular pathologies. According to an analytical forecast of the World Health Organization, by 2020 CVSD and mental depression will be leaders in reducing full-value life in the whole world. Lately, more obvious has become the interest of science in studying the relationship of religion with depression, stress, and AH, since many studies are known to have corroborated the existence of a direct correlation between the said factors. Proceeding from the above, a comprehensive study of the relationship between depression and CVSD presents a rather topical problem of medicine. The purpose of the study is to establish a relationship between religiousness, mental depression and lipids in patients with AH. Elderly patients aged 60 to 74 were subjects of our study. Patients were divided into four groups according to their sex and religion. The depressive state used to be determined by the Fallstein Geriatric Depression Scale. Religiousness was measured according to personal prayers and the frequency and regularity of participation in religious rituals. The studies revealed these criteria to be most sensitive in terms of evaluation of religiousness. Of biochemical parameters, the following were measured in blood serum: TCh, Tg, HDLCh, LDLCh. As a result of an analysis of the study results, the following data have been obtained: a reliably low depression assessment points are observable in the believers against the non-believers; respectively, in the believer males a low correlation of depression, AH and TCh is observed. In the non-believer males a high direct correlation of depression and AH, AH and TCh, LDLCh and Tg is observed. In the believer females, a negative correlation of depression and TCh, LSLCh and Tg is observed, whereas in the non-believer females such correlation is positive. Proceeding from the above, the favorable impact of religiousness on the manifestations of depression, as well as the AH and lipid metabolism can be assumed.
Auth.
UDC 616.12-008.331:616.379-008.64
C13.6. The
Association of Blood Pressure Levels with Peritoneal Insulin Absorption in
Diabetic Patients on Peritoneal Dialysis. /T.
Pantsulaia, L. Managadze/. Bulletin of the Georgian National
Academy
Intraperitoneal insulin administration is very important for diabetic patients to control blood glucose level and to prevent development of peripheral hyperinsulinemia, which increases the risk of atherosclerosis. Factors affecting intraperitoneal insulin absorption are unclear, and our aim was to study some of the parameters which theoretically can play a role in insulin absorption. One of these parameters is blood pressure, which in itself is associated with the peritoneal transport status. In the results, we give the correlation between insulin absorption and blood pressure; numbers of blood pressure above normal contribute to insulin absorption (p=0.045). This fact is very important in the treatment of diabetic patients, to ensure good control of blood glucose level.
Auth.
UDC 616-089.843:616-005.4
C13.7.
Intramyocardial and Extramyocardial Autologous Endothelial Cell Transplantation
for Treatment of Ischemic Cardiomyopathy (Experimental Investigation). /V.
Chekanov, V. Nikolaychuk, N. Kipshidze /.
Bulletin of the Georgian
National Academy
Regional myocardial perfusion and function may improve after cell transplantation. The objective of the study was to investigate the feasibility and efficacy of autologous endothelial cell implantation into myocardium or transplantation onto myocardium using a fibrin matrix. An ameroid constrictor was placed on the circumflex artery of 48 adult sheep to induce ischemic cardiomyopathy. Four weeks later, the animals were divided into the following six groups (n=8 in each group): cardiomyoplasty alone without cell transplantation (CMP), cardiomyoplasty with EC added to a fibrin platform and placed between the myocardium and latissimus dorsi muscle (CMP+EC), autologous EC transplantation (AEC), saline injection with added denaturated cells (SAL), fibrin sealant injection without EC (FS) or a control (CON) group. Eight weeks after treatment the left ventricular function was investigated and the animals were sacrificed. Myocardial blood flow and capillarization were evaluated. Eight weeks after injection (AEC, SAL, FS groups), or cardiomyoplasty (CMP, CMP+EC groups) or control (CON) groups, ventricular function was markedly improved in the CMP, CMP+EC and AEC groups (p<0.05 versus baseline, SAL, FS and CON), but had deteriorated in the SAL, FS and CON groups (p<0.05 versus baseline). Myocardial blood flow was also deteriorated after ameroid constrictor placement, but 8 weeks later was increased in the EC-group. Myocardial blood flow was also deteriorated after ameroid constrictor placement (p<0.05 in all groups vs. baseline), but 8 weeks later was increased in the EC and CMP+EC groups (p<0.05 vs. before treatment). In the CMP, SAL, and CON groups myocardial blood flow continued to deteriorate for the next 8 weeks. In the FS group myocardial blood flow had a tendency to increase after treatment, but statistically non-significant. Histology and electron microscopy revealed extensive neovascularization and improved myocardial appearance after endothelial cell implantation into myocardium and cell transplantation between myocardium and latissimus dorsi muscle. In the other groups capillary density was considerably deteriorated. These results suggest that intramyocardial transplantation of autologous EC within a fibrin matrix and application of EC to the myocardium during cardiomyoplasty enhances neovascularization, increases myocardial blood flow, and improves the left ventricular function.
Auth.
D1. Organization and
Management
UDC 681.5
D1.1. Graphical Imitation of Controlling Process and
Increase of Operator Activity Reliability in the Automated Systems. /O. Shonia, L. Kakashvili/. Georgian Oil and Gas. – 2007. -
¹21. - pp. 127-128. – geo., abs.: geo., rus., eng.
The method of the paper is representation of graphical information into
the automated system AutoCAD. By means of main component - the graphic editor
it's possible to create, correct and use a drawing for any difficulty. The
system ability is shown according to the solving of this or that task. This
system is very comfortable. Thanks to it the minimum of human resources will be
used during creating the work drawings of any kind.
Auth.
D2.
Nature Protection. Ecology
UDC 628.1
D2.1. Descriptive Modeling
of Potable Water Quality According the Data of a Number of International
Standards. /Z.
Tsikhelashvili, P. Giorgadze/. Hydro Engineering. – 2007. - ¹2(2). - pp. 29-42. – rus., abs.: geo., rus., eng.
The
general state of the problem of environment concerning the contamination of
water resources and the provision of population need in potable water is
considered. The methodology of comparative analysis of the results of
descriptive modeling of potable water quality by the international standards
(ÃÎÑÒ 2874-82, ÂÎÇ 1993, ÅÑ 95/C 13103, San Pin) is presented. Descriptive
models built up by the proposed methodology to the data of the above given
standards are presented in annexes.
Auth.
UDC 628.1
D2.2. Wastewater Treatment of the Phenols. /M.Kobakhidze, D.Gurgenidze/. Hydro Engineering. – 2007. -
¹2(2). - pp. 43-47 – eng., abs.: geo., rus., eng.
It has
been introduced the results of research of phenol wastewater treatment via
alkylation and ozonation reactions. The chemical conversion is better for
alkylations of sorted phenols by alcohols. The ozonation gives the
possibilities to destroy phenol till un-toxic compounds.
Auth.
UDC 547.4/.5
D2.3. Migration of Heavy Metals into Environment
and Prognosis of its State in a Result of Cumulated Substances Emission. /E. Shengelya, L.
Gvasalya/. Georgian Chemical Journal. – 2008. –v. 8 - #1. – pp. 73-75. –
rus. abs.: geo., eng.
The influence and relationship between the pollution of separate parts of eco-system by copper and health of the human being is discussed. The mathematical model is produced that can define the consistency of copper in separate parts of this system in specified periods.
Auth.
UDC 624.131.6
D2.4. Purification of Quarry
Waters From Ions of Heavy Metals Using Sulfide Compounds. /S. Andguladze, V. Gaprindashvili, Ò. Lomya, Ì. Chankotadze, L.
Chankvetadze, K. Tserodze/. Georgian Chemical Journal. – 2008. –v. 8 - #1. – pp. 76-78. – rus. abs.: geo., eng.
The technology of purification of quarry
waters on the basis of reprocessing barite concentrate has been developed. The
process enables to obtain sulfide compounds used as sediments chemical
reagents. The technological parameters of reprocessing float-barite and
purification of quarry waters have been determined. It is established that during the usage of
the sulfide compounds as precipitating reagents the deep purification of acid
quarry waters from ions of heavy metals with acceptance of copper containing
sulfide sediments useful for subsequent use is achieved.
Auth.
UDC 351.777.6
D2.5. Integrated Assessment of Water Quality of Some Rivers in Adjara. /L. Gvasalya,
During summer 2006, research was held to
determine concentration of dissolved oxygen, OBC5, nitrate, nitrite,
ammonia, phosphate and silicate on the four observed rivers Kintrishi,
Korolistskali, Kubastskali, Barckhana (Adjara) in two points. The first point,
the upper segment - from the head 2.5 km (Kintrishi 5 km) station
and the second point, the lower segment - head zone. Pollution index was
calculated from the data. According to the materials, rivers are classified
from “very clean” to “polluted”.
Auth.
UDC 628.543
D2.6. Petroleum and Oil Containing Industrial and
Domestic Sewage Purification. /N. Makharoblishvili, Z. Tsikhelashvili,
The experiments are
conducted for purification of petroleum, oil containing industrial and domestic
sewage by using minerals extracted in
Auth.
UDC 628.543
D2.7. On the Chemical Composition and the Pollution
of Waste Waters. /A.
Dolidze, V. Dolidze, K. Makhashvili/. GEN. – 2007. - #4. – pp. 80-82. – rus., abs.: eng.
There are discussed some issues associated
with the specific features of chemical composition of waste and natural waters
and also the basic ionized impurities of natural waters and their characteristics. The admissible
concentrations of radionuclides in natural and waste waters are given, the
maximum permissible concentrations of chemical agents in potable water
established by different agencies and services are considered.
Auth.
D4. Other Intersectoral Problems
UDC 551.5
D4.1. Elaboration of Methods and Means of Remote Sensing of
Dangerous Meteorological Phenomena and Selecting of Different Objects by Means
of Polarization Radar. /K.Tskhakaia, G. Aduashvili, V. Meladze/. Works, 10. – 2007. – pp.
297-300. – rus., abs.: eng., geo.
The task
of presented paper is to determine and to search the mechanism of connections
the polarization parameters of radar signals and characteristics of atmospheric
formations. Through the obtained results the most effective methods and
reliable means of detecting the dangerous meteorological phenomena and
selecting of different objects by polarization radar are to be worked out.
Auth.
UDC 728.6
D4.2. Nonflexible Deformations of Thick Walled Cylinder Cover
in Terms of Permanent Temperature Gradient and Pressure. /T.Bacikadze,
Strained and deformed state of thick walled
cylinder for the effecting conditions of pressure and permanent temperature gradient existing on
inner and outer surface has been studied. Flexible as well as flexible-plastic and plastic
deformations are considered.
Auth.
UDC 543.53
D4.3. On the Problem for Improvement of the Automatic
Line Dynamic Characteristic of the Pneumatic Sampler on the Neutron
Multiplier).
/T. Sharabidze, T. Cokaya/.
Georgian Oil and Gas. – 2007. - ¹21. -
pp. 123-126. – geo., abs. geo., rus., eng.
The article considers the radiation safety problem
of the personnel attending the neutron multiplier. On the pneumo-automatic line
a damper device has been developed that automatically fixes a capsule with the
sample in the radiation zone. 4 ill., bibl. 3.
Auth.
UDC 339.142:519.876.3
D4.4. Using the Net Model
to Analyse the Economical Dynamic. /
Modern economical theory at the level of micro and macro economies,
uses mathematical methods and models as the essential and natural elements.
Using the mathematics in economy, gives us an opportunity to separate and
formally describe especially, important and existing relations between the main
economical values of the object. According to the method of deduction, which is
based on the initial data and their relations, we shall receive an
adequate conclusion about the object,
which would be studied by us. The mathematic and the statistic methods
give us a chance to receive some new information about the object and to
estimate the values and the dependence on their forms and parameters. In this
article is considered: The Net model,
which gives us an opportunity to investigate the stability of price and volume
on the market by using the traditional demand and supply curves, when they are
delayed in time. We also investigate the
behavior of manufacture volume and the price, while the initial point does not
coincide with the equilibrium.
Auth.
UDC 330.3:519.22
D4.5. The Analysis of Economy on the Basis of Solou Model. /N.Sesadze, V. Sesadze, V. Gemazashvili, T. Bazuashvili,
E. Abramidze/. Proceedings, Automated Control Systems.
- 2007. - #2 (3). – pp. 131-136 – rus., abs.: eng., geo.
There is
the description of model of economic growth of R. Solou. The article also
includes all the basic conclusions, made as a result of the analysis of economy
on the basis of given model. It is shown, that a condition of the accelerated
growth in a steady condition is speed of technological changes and increase of
a level of savings can lead to increase in rates of growth if to use spillovers.
Auth.
UDC 616.31:681.5
D4.6. Development of
Computer Network Architecture for Stomatological Service of
Questions
of using of computer technologies in stomatology of
Auth.
UDC 342.9:681.5
D4.7.
Automation of the Processes of Administrative Jurisprudence. /G. Ghvinepadze, V. Kekelia,
Unlike the earlier systems, a computer system which is
to be projected, works according to the territorial principle, in a net
environment assigned for time distribution. For the so-called actors, a new
approach towards the creation of the system has necessitated the requirement of
the detailed definition of rules for the work on legal cases. Together with the
necessity of taking control of the activity of court personnel, this system is
first of all considered to be the device which should be subordinated to the
needs of the consumer. It serves as a warning system which notifies about the
‘narrow’ places in advance and retrieves the information having been saved in
the base in any desirable form. Computer
system is created on the base of SQL
Server 2000. Programs are processed by the use of
Auth.
UDC 621.643/646:625.091
D4.8. Geoinformation System of Evaluation of Technical Condition and Prediction of Residual Life of Pipelines. /E. Garf, P. Yukhimets, V. Palienko, R. Spitsa, P. Voroshko, S. Kobelski, V. Kravchenko, I. Ruban/ Problems of Metallurgy, Welding and Materials Science. – 2007. - #3(17). – pp 24-32. -rus.; abs.: geo, rus, eng.
The fundamentally new scheme of geoinformation system includes the data base on condition of pipeline sections and analytical block for taking the respective decisions. The distinguishing feature of the system is the capability of evaluation of hazards and risk of accidents, taking into account the residual life predictions based on statistical processing of the results of examination of prospect holes, evaluation of the dynamics of the subsurface part of the lithosphere in regions of pipeline routes, FEM analysis of SSS of typical pipeline elements, also in the presence of surface not crack like defects.