SUMMARY
Meladze V.D., Asanidze A.V. and
Chikhladze G.G.
Abstract: A new method for investigation of electromagnetic
compatibility (EC) and noise immunity (NI) of the active dipole is presented.
At the first stage, a new, correct solution of Hallen’s integral equation
relative to the axial current of the dipole is given. It is shown that, besides
the sinusoidal term caused by the action of e.m.f., applied to the center of
the dipole, it contains other, new terms created by the interference of fields
radiated by separate arms of the dipole. New formula characterizing the
radiation pattern of the dipole is concluded; so-called compatibility
function (CF) is introduced, while its analysis provides rather satisfactory
characterrizing and description of EMC and NI of the dipole. Great number of
numerous data is presented, proving the effectiveness of suggested method of
estimation and improvement of EMC of the dipole.
Keywords: electromagnetic compatibility, noise immunity,
dipole.
Simplified Method for Derivation of the dispersion
equations for the multilayer magnetodielectric-filled rectangular waveguide
Abstract. A simplified method for derivation of dispersion
equations for finding the propagation constants of longitudinal modes in the
rectangular waveguide with longitudinal homogeneous N-layer isotropic magnetodielectric filling is presented. The
analysis is based on the use of the transfer matrix of plane layer (TMPL)
associating the field strength values of eigenmodes of the structure at flat
boundaries of the layer. The efficiency of the method is due to the unified
representation of the dispersion equation. This representation includes a
product of N transfer matrices
(TMPL), which are unimodular. A
recurrent form of the representation of the dispersion equation is given too.
Keywords: dispersion equation, longitudinal modes, multilayer
rectangular waveguide, transfer matrix of plane layer (TMPL).
Summary
On the issue of significant reduction of numericaL
computation in the problem of elctromaginetic wave scattering by the cylindric
inhomogeneity placed in the resonant part of waveguide tee
Kekelia
g.v., kobiashvili p.g. and Kipiani d.o.
The
issue of significant reduction in the time it takes one to perform the
numerical computation in the problem of electromagnetic wave scattering by the
cylindric inhomogeneity placed in the resonant part of waveguide tee is
discussed. such reduction would
facilitate connecting this system to the automatic control system. with this in mind, modernized bakhvalov’s quadrature is applied to the integrals
appearing in the matrix elements of the infinite set of linear algebraic
equations corresponding to the problem set up. In this case, the matrix elements
are written in the analytical form.
Keywords: numerical
computation, time reduction, wave scattering, waveguide tee, cylindric
inhomogeneity, resonant part, matrix elements.
STATISTICAL
SIMULATION OF STATISTICAL CHARACTERISTICS OF the
RADIATION SCATTERED BY TURBULENT PLASMA LAYER
Jandieri G.V.,
Gobadze M.N., Shirokov I.B., Gimpilevich Yu.B., Mchedlishvili N.P.,
Diasamidze Zh.M.,
Gomidze N.Kh. and Takidze I.G.
Georgian Technical University
Abstract.
Phase fluctuations of scattered radio waves caused by
large-scale electron density irregularities in the ionospheric plasma were analyzed in the small-angle approximation. The point source and the
receivers were located at the opposite sides in respect to the scattered plasma
layer of finite thickness. The angle of arrival (AOA) was calculated
for the power correlation function of fluctuations of the electron
concentration. Numerical calculations and statistical simulation were carried
out for the ionospheric 
region
using the satellite data.
The statistical simulation of AOA by the Monte-Carlo
method describes well the behavior of spatial power spectrum of scattered radio waves obtained
using the geometrical optics approximation.
Keywords: turbulent
plasma layer, scattering of radio waves angle. of arrival, statistical
simulation, Monte-Carlo method.
On the composition
concept of walking robots
Machavariani G.A.
Abstract. A six-legged robot
designed on the basis of a composition concept is described. This concept
allows the formation of complex forms of behavior on the basis of simpler ones.
Such a robot can be considered as a system of collective behavior of automatons
and as a multiagent system consisting of the agents (automatons) operating in
the real world.
Keywords: robotics,
collective behavior, of automatons, multiagent systems, six-legged robot.
Quantum Cryptography Based on Exactly
Solvable Models
Shubladze M.Sh. and Khmiadashvili M.A.
Abstract. The way of
obtaining a universal set of gates by
using time-dependent Hamiltonians is presented. Two-quibit gates are described by special 
matrices, the
application of which leads to the alternation of states. These matrices form a
universal set of quantum gates. All these matrices can be obtained by dynamic
transformation of the quantum system, which will provide the quantum program
with required unitary matrices at each fixed moment.
Keywords: gate, quantum, Hamiltonian, unitary matrix.
SUMMARY
PRINCIPLES
OF EMBEDDED SYSTEMS DESIGN
Dadunashvili
S. A. and
Dzagania
N. S.
The principles of parallel architecture of
systems are considered. The necessity in application of embedded systems is
proved. An example of the programmed logic matrix as an embedded system is
given.
Keywords: embedded system, microprocessor, design.
Summary
Application of the METAPROGRAMMING MODEL to formal
GRAMMARS
Bakhtadze T.O.
The issues of the representation of knowledge
are considered. The metaprogramming model of the knowledge representation,
which means the choice of the metaprogramming language on the basis of the
initial data and the composition of the program of knowledge representation
using this language, is proposed. All this is described in detail as an example
for formal grammars.
Keywords:
metaprogramming model, formal grammar, knowledge
representation.
Summary
THE SUBSYSTEM OF
VISUALIZATION OF point distribution of
the earthquake
Bakhtadze T.Î.
The statement and the solution of the problem of the intensity distribution of earthquake in
relation to the geoinformation system are given. The mathematical model and the
program realization are described with regard to the specificity of
Keywords: earthquake, intensity distribution, visulalization.
summary
A Universal CALCULATION
MODEL FOR the CONTROLLED ELECTIRC transmission line
Zivzivadze O.V. and Zivzivadze L.B.
Difficulties associated with the development of
calculation models are analyzed, and the ways of resolution of these problems
are given. A version of the equivalent circuit as a six-pole network, the
parameters of which do not depend on the angle of shift 
between
the voltage vectors of circuits is offered. The interrelation between the
parameters of the equivalent circuit and the transmission constants of the line
was determined. A universal calculation model for the controlled electric
transmission line was elaborated. The model allows calculating the stationary modes of lines of such classes at
any angle of shift between
the circuits.
Keywords:
calculation model, electric transmission line,
equivalent circuit, shift angle.
Summary
CONSTRUCTION And APPLICATION of the Youden plot AT
CHECKing the QUALITY of REALIZATION of TESTS BY MEANS OF INTERLABORATORY
ComparisonS
Zedginidze
I.G., Beraya N.O. and Karoyan I.B.
The
questions of checking laboratories on the quality of realization of tests at
interlaboratory tests of samples of two similar materials are considered. The
graphical method of studying the results is described by construction of the
Youden plot and interpretation of the plot with the help of confidence ellipses
based on
Keywords: interlaboratory tests,
graphical investigation methods.
SUMMARY
CHANGES IN RADAR REFLECTIVITY AND THE COEFFICIENT OF DEPOLARIZATION, AND
THE INFORMATION THEY CONTAIN
Tskhakaia K.G.
The specific features of spatial
distribution of polarization characteristics are considered by comparing the values of reflectivity Z with
the temperature data of radiosounding. The locations of the zones of possible
icing of aircrafts are shown.
Keywords:
depolarization, radar reflectivity, aircraft icing.
Summary
Network model of global control
Gotsiridze
G.V.
A
queueing network model for studying the characteristics of two-level global
control is presented. The methods of computation of the characteristics of
queueing network states are discussed. The basic characteristics of the
backbone network such as its capacity and delay time are defined.
Keywords: queueing network, global control, network model, two-level control.
Summary
A Direct method of deriving
the representative equations of dynamic systemS
Bandzeladze B.R.
It
is demonstrated that the direct method of deriving the representative equations
of dynamic systems allows making the theoretical computation using the
Keywords: representative
equations, dynamic systems, direct method of deriving.
Summary
σ-centered systems in the product and extension
Kvekveskiri
M.M.
The
elemetary properties of σ-centered systems of sets which are the natural
generalization of centrality of set systems are considered. Their application
in some nonstandard problems of elemetary geometry and theoretical-set topology
is discussed.
Keywords: σ-centered system, elementary geometry, set topology.
Summary
ON THE
DETERMINISTIC MODEL OF THE THEoRY OF STOREKEEPING
Tsikhelashvili Z.I., Sokhadze A.P., Churchelauri B.G.
and Metreveli G.A.
By the theory of storekeeping is meant, as a rule, a
set of problems of mathematical economic models, witch are designed for describing and analyzing the
situations that emerge at accumulation of raw materials, commodities,
intermediate products etc. One of the goals of storekeeping consists in the
equalization of disproportions between production and consumption. In this
connection, in the theory of storekeeping, the problems of optimization of supply systems are primarly considered. By a
simple deterministic model, a technique of supply control is illustrated. The
essence of the deterministic model is unveiled. The methods of finding the
optimum parameters witch can be extended to real supply systems of big
enterprises.
Keywords: deterministic model, storekeeping, supply
system, optimization.
Research of the partial contact by the averaging method
Mardaleishvili N.V.
Abstract. The contact between the composite layer and the basis was investigated.
The method of averaging by the theory of
zero-order approximation was used.
For determination of the contact zone, the second-order Fredholm
equation was derived. At the existence of a unique zone of contact, the
analytical expression for determination of the contact pressure was derived.
Keywords: multilayer environment, composite, averaging method, Fredholm equation, contact zone.
Terminal Control Method in the Acceleration
Problem of Drivelines
C. Aksu
Abstract: On the bases of general principles of Drivelines Terminal Control, the
optimal solution of acceleration problem is given. The singularity problem in
the control function is discussed and solved. A conception of the transient
component of the control process is defined. The conditions of its presence are
defined.
Keywords:
terminal control, driveline, acceleration, singularity.
SUMMARY
THE
Purtskhvanidze
G.N. and Kochadze T.P.
The
recommendations on the maximum speed limit for interurban traffic depending on
road conditions are given. Based on the investigation results, it is
demonstrated that the maximum speed limit should be established depending on the
category and the condition of the road. The maximum speed limit for road trains varies in the range of 50-90
km/hour, i.e. depending on the road conditions , the maximum speed limit could
be lower or higher than the maximum speed of 70 km/hour stipulated by the road
safety rules being in force.
Keywords: speed limit, road train, road conditions, interurban traffic.
SummAry
construction of A conceptual
model of the complex business process
Kiknadze m.g.,
petriashvili l.n., gvaramia
e.g. and gochitashvili l.I.
the problems of simulation of
the complex business process are discussed. Some of the difficulties
encountered when modelling the complex business process are described.
Keywords: complex business
process, simulation, conceptual model.
SUMMARY
TESTING,
CERTIFICATION AND QUALITY CONTROL OF PRODUCTION UNDER NEW ECONOMIC CONDITIONS
Eremeishvili N.I. and Beleshadze T.D.
The
definitions of testing , certification and quality control in national and
international standards are discussed. Some differences in those standards are
poined out. It is emphasized that it is important to form the system of quality
control of products at all stages of their lifetime, the structure and the
principles of operation of which will conform with the methods and concepts of
quality control accepted in developed
countries and in international trade.
Keywords: quality control,
certification, testing, international standards.
summary
General Prerequisites for the
development of system approach to the problems of water economy
Mikhelashvili I.M., Nozadze M.Sh., Nareklishvili T.G.
and Zakutashvili G.G.
The
issues of increasing global demand for potable
water and the requirements for intensification and efficiency of
consumption of water resources in water management systems are discussed. The
ways of water economy development and resolution of lots of problems concerned
(the problem of water purity within limited areas the problem of potable water
etc.) on the dynamic system basis are considered. For development of the system
approach to the problems of water economy, it is proposed to use probabilistic,
heuristic and forecasting methods.
Keywords: water economy,
development, prerequisites, system approach.
SUMMARY
ON THE APPLICATION OF FORECASTING
METHODS TO DESIGNING AND OPERATION OF WATER MANAGEMENT SYSTEMS
Mikhelashvili I.M.,Verulava G.Yu. and Zakutashvili
G.G.
The
importance of application of forecasting methods to designing and operation of
water management systems is emphasized. The block diagram of the process of
forecasting is given. The forecasting methods used in water management systems
are characterized.
Keywords: water management
system, forecasting, block diagram.
SUMMARY
THE POSSIBILITIES
FOR NANOMODIFICATION OF
NATURAL ZEOLITES
Tsintskaladze
G.P., Skhvitaridze R.E., Keshelava B.P., Tatarashvili G.S.
Sharashenidze
T.V. and Burjanadze M.N.
P.
Melikishvili Institute of physical
and organic chemistry
Kiriak
Zavriev Institute of Structural Mechanics and Seismic Stability
At present
fine silicon and
aluminum oxides of
different origin are
used as nanomodifying
agents. natural
zeolites can be used
as mineral admixtures
as well. Georgia is rich
in natural zeolites, so
their use in
the production of
building materials is
rather promising. the
possibilities for
nanomodification of natural zeolite - clinooptilolite from one of
local deposits were studied. In the
investigation, the following methods
of physical and chemical
analyses were used: X-ray diffraction
analysis, infrared spectroscopy,
thermography, water-vapor
adsorption etc. The
obtained results show
that it is possible to subject natural
zeolites to nanomodification and
to use them
as nanoagents of cement.
Keywords: cement, mineral admixture, zeolite, nanomodification, plasticizer, adsorption.
SUMMARY
SOME MAIN DEPOSITS OF NATURAL
ZEOLITES: Part 1.
DEPOSITS OF SEDIMENTARY ZEOLITES
IN DIFFERENT COUNTRIES
Andronikashvili T.G.,
Eprikashvili L.G., Kordzakhia T.N.,
Dzagania M.A. and Kakhidze N.A.
P. Melikishvili Institute of
Physical and Organic Chemistry
Some commercial deposits of zeolite-containing
sedimentary rocks located in different countries are discussed. Their characterization is given. The possibilities for commercial extraction
of zeolites at those deposits are considered.
Keywords: natural zeolite, commercial deposit, molecular
sieve, mordenite, crionite,
clinoptilolite, heilandite, phillipsite, chabazite.
SHAPE-MEMORY EFFECT IN Ti-Nb ALLOYS
Peradze T.A., Berikashvili T.I., Chelidze T.V.,
Gorgadze K.M., Bochorishvili M.M. and Taktakishvili M.S.
Abstract: The work deals with
the investigation of the binary alloy of titanium with niobium and is aimed at
demonstrating the functional-mechanical possibilities of Ti-Nb alloys from the
viewpoint of their potential application in practice. The shape-memory effect,
super elasticity and reactive stress in alloys of Ti-Nb system were studied. It
turned out that the work carried out expanded the interval of Nb content in the
investigated alloys from 25.9 to 33.1 wt %. The shape recovery made up not less
than 90% at the deformation of 6-8%. The reactive stress reached 350-450 MPa.
In the alloys under study another (high-temperature) shape-memory effect was
found, and the influence of hydrogen and oxygen on the inelastic properties of
alloys was studied.
Keywords: β-titanium alloy, Ti-Nb alloy, super elasticity, shape-memory effect.
summary
electron-microscopic
investigation of decomposition of the α-solid
solution of Cu-Si alloys
Kobakhidze G.M. and Kutelia E.R.
The alloys of Cu-Si system were studied by electron
microscopy. It is justified that stacking faults play a decisive part in the
formation of æ-phase from the HCC
lattice of α-phase
of the alloys with higher content of silicon. Based on the results of
electron-microscopic invetigation of the microstructure and the mechanical
properties of the alloys under study, it can be inferred that the changes in
the mechanical properties of the alloys are directly related to the microstructure
formed as a result of decomposition of the α-phase of Cu-Si alloys.
Keywords: cupper-silicon alloys, phase transformation,
mechanical properties, electron-microscopic analysis.
SUMMARY
Acoustic investigationS of
the martensite transformation in titanium-based alloy BT-23
Peradze
T.A., Arabajian N.L., Serdobintsev V.I., Chelidze T.V., Berikashvili T.I.
and
Gorgadze K.M.
E.Andronikashvili
Intitute of Physics
Low
frequency (~103Hz)
acoustic investigations of alloy BT-23 (Ti-(4.0-6.3) Al-(4.0-5.0)V-(1.5-2.5)Mo
– (0.8-1.4)Cr) over the temperature range of
20-6000C were carried out. The dependence of inelastic behaviour of
the alloy in the area of the martensite transformation on the phase composition
was revealed. It was shown that the maximum softness of the dynamic modulus of
elasticity (~15%) takes place in the case of the structure of unfinished martensite
transformation bì®a". The effect is explained by the movement of intraphase and doubled
boundaries.
Keywords:
titanium alloy, shape memory effect, modulus of elasticity, internal friction.
SUMMARY
SIGN CHANGEBILITY OF THE EFFECT OF MECHANICAL SHAPE
MEMORY IN γ- MANGANESE ALLOYS
Berikashvili T.I., Gogua A.L., Gogua T.L. and Kalandadze I.G.
Based
on the data on the structural state of orthorhombic γ-manganese alloys, the reasons for the sign changeability of the effect
of mechanical shape memory are explained.
Keywords: shape memory,
face-centered orthorhombic structure, deformation, sign changeability.
summary
On the desiccation of
transformer oil by using synthetic and natural zeolites
Kordzakhia T.N., Eprikashvili L.G., Andronikashvili T.
G. and Pirtskhalava N.V.
P. Melikishvili Institute of Physical and Organic
Chemistry
The
issues of using the synthetic and natural zeolites for desiccation of
transformer oil are discussed. Such desiccation extends the oil-change period
and provides efficient operation.
Keywords: zeolite,
clinoptilolite, desiccation, transformer oil.
Summary
quality control of refiltered transformer oil
Mamulaishvili N.D., Megrelishvili
Z.N. and Loria M.S.
The
problems of quality control of refiltered transformer oil are discussed. The
graphical temperature dependence of oil ageing and the dependence of dielectric
loss on the degree of oil refinement are presented. The dielectric and
physical-chemical indices of the refiltered oil and the standard specifications
are given.
Keywords: transformer oil, refiltration, quality control, dielectric indices.
SUMMARY
THE
TOXICITY OF GASOLINE ENGINE OPERATING WITH a
HYDROGEN ADDITIVE IN THE MODES OF START AND WARM-UP
Purtskhvanidze G.N. and Chogovadze
D.T.
The
investigation results on the system of exhaust toxicity reduction involving the use of a hydrogen
additive in the modes of start and
warm-up are discussed. It is demonstrated that the addition of hydrogen to the
gasoline-air mixture allows reducing the emission of CH and the gasoline
consumption and extends the limits of stable operation of the engine.
Keywords: gasoline engine, exhaust gases,
toxicity, hydrogen additive.
SUMMARY
THE CONCURRENCE OF THE PROCESSES OF ENERGY TRANSFER
AND FORMATION OF POLAR TRIPLET EXCIPLEXES
Kokrashvili T.A. and Shengelia M.A.
The
situation when the triplet energy of the quencher and the energy of the state
with complete charge transfer are lower than the energy of the initial state of
the exciplex is discussed. It is demonstrated that, if the quenching of the
triplet state of quinone by anthracene
brings about the formation of triplet exciplex, so will the quenching of the
triplet state of anthracene by corresponding quinone.
Keywords: energy transfer,
triplet exciplex, triplet state, electron transfer.
SUMMARY
THE EFFECT OF TEMPERATURE ON THE KINETICS OF
RECOMBINATION OF RADICAL PAIRS IN MICELLES
Kokrashvili T.A., Shengelia M.A. and Tsulukidze M.P.
The effect of temperature on the kinetics of
recombination of some radical pairs in micellar water solution was studied. It
is shown that proton coupling as well as
electron donor-acceptor coupling play an important part in the formation of
complexes between radicals. The radicals in radical pairs are assumed to form
the complexes with hydrogen bond.
Keywords: radicals,
recombination kinetics, triplet state, temperature effect.
SUMMARY
MAGNETOVOLUME EFFECTS IN ZONAL MAGNETICS
Gamishidze Z.M.
The magnetic states of Y1-tGdt(Co1-xAlx)2
and Lu1-tGdt(Co1-tAlx)2
systems were studied. It is shown that when yttrium or lutetium is replaced
with gadolinium in small concentration, the critical field of transition
decreases, while, at high concentration of gadolinium, there develops a
ferromagnetic degree of ordering. It was established that, at low temperature.
in the Lu1-xtGdt(Co1-xAlx)2
system, heterogeneous magnetic phases with coexistent paramagnetic and
ferromagnetic phases were formed. The additional positive and negative volume
anomalies in ferromagnetic and paramagnetic phases, respectively, caused by the
first-kind phase transitions in the abovementioned system are explained.
Keywords:
zonal magnetics, magnetovolume effects, yttrium, lutetium, gadolinium.
SUMMARY
AN INDUCTIVE METHOD FOR PRODUCTION OF NANOPARTICLES
Gamishidze Z.M.
The
application of the inductive method of melting to the production of
nanoparticles is discussed. By selecting the relevant characterizing parameters of metal molecules (atoms)
evaporated by the inductive method of melting and of the reactor, it is possible to perform the experiment on production of
nanoparticles.
Keywords: nanoparticles, inductive method, reactor.
HIGH TEMPERATURE LIGHT FURNACE
BASED ON SOLID-STATE
LASER QUANTRON FOR BASALT and silver chloride FIBERS MANUFACTURE
Mikaberidze A.A., Jibladze
M.I., Razmadze Z.G.,
Magalashvili P.V., Tsotskhalishvili
N.V., Zhorzholiani B.T. and Arzumanov
V.A.
Abstract. The
possibility of designing the light furnace on the base of quantron of solid
state laser is considered. The dependence of temperature at certain points of
light furnace on the voltage applied to
the lamp was studied. The inertia
characteristics of the light furnace
were investigated. Possible applications of the furnace are listed.
Keywords: light furnace, guantron, solid-state laser,arc lamp,
temperature, basalt, silver chloride,
fiber.
SUMMARY
MICROELECRONIC SENSOR FOR CONTROLLING THE LEVEL OF
LIQUIDS
Khachidze T.I. and Khachidze N.I.
A microelectronic sensor for controlling the level of
liquid media was designed. The principle
of operation of the sensor is based on the difference between the values of
convective heat exchange of the thermistor
heated up by the operating current in air and in liquid. Along with the
basic sensing element, the sensor contains a compensating thermistor, which
provides normal operation of the sensor at different temperature ratios between
the liquid and the air.
Keywords: microelectronic
sensor, sensing element, thermistor, liquid level.
Summary
Electrodes for determination
of the ion activity
Dolidze V.A., Dolidze A.V. and Makhashvili K.A.
Various
types of ion-selective electrodes and their applications are discussed. Special
attention is paid to electrode membranes. Solid membrane electrodes are used
for determination of Ag+, S2-, fluoride, metal ions etc.
Liquid membrane electrodes, including film and matrix ones, are used for determination of Na+, K+, NH4+
and other. There are available gas-sensitive electrodes for measuring NH3,
NO and other gases. It is mentioned that the ion-selective devices are
promising for further microminiaturization of sensors.
Keywords: ionometry, ion-selective
electrodes, electrode membranes.
SUMMARY
The investigation of various ligand coordination
compounds containing citric acid and nitrobenzoylhydrazine
Gogaladze
M.A., Urotadze S.L., Beshkenadze J.A. and Zhorzholiani N.B.
P.
Melikishvili Institute of Physical and Organic Chemistry
the character of coordination
between nitrobenzoylhydrazine and the citric ion was established in the
synthesized compounds of the following types: Ì(î-NBNd)∙H2L∙nH2O, M(m-NBHd)∙H2L∙nH2O,
M2(o-NBHd)∙L∙nH2O and M2(m-NBHd)∙L∙nH2O
(where M=Mg,Mn,Zn,Fe, Co,Cu,Ni and Cd; î(-ì)-NBHd-ortho-(meta-)-nitrobenzoylhydrazine;
H2L2-, L4 - the citric ion;
n=1÷6.). the method of
infrared absorption spectrophotometry was used for this purpose. The biological
activity of the biostimulator based on the synthesized compounds was studied.
Keywords: coordination
compounds, ligand, citric acid, nitrobenzoylhydrazine, biostimulator.
Summary
Structure of bis(piperidinium)
hexaaquacobalt(II) tetra (3,5-dinitrobenzoate) dihydrate Co(OH2)6](PipH)2(3,5-DNB)4
∙2H2O.
Miminoshvili E.B., Vardosanidze T.O. and Miminoshvili K.E.
There was studied the structure of compound Co(PipH)2(3,5-DNB)4∙8H2O,
where PipH= (C5H10NH2)+- piperidinium, 3,5-DNB=(C7H3N2O6
)- - dinitrobenzoate; (a=6.7426(5);
b=16.053(1); c=23.095(2)Å; b=97.787(2)º; T = 153K, P21/n, Z = 2, R(F)
= 0.0468,). The compound consists of a
cation of [Co(OH2)6]2+, two cations of (PipH)+, four anions of 3,5-DNB and two water molecules.
Keywords: X-ray structure analysis, complex compounds,
transition metals, piperidinium,
dinitrobenzoate.
SUMMARY
THE
PROBLEM OF DESIGNING OF MODERN MEDICINES
Matsaberidze
M.I.
The
topology of techniques of searching for and designing of medicinal compounds is
discussed. This problem is quite complicated, because chemists, biologists and
physicians speak “different languages”. For designing of new medicines, they
need “a translator” of biochemical (or pharmacological) information into the
language of structural formulae. Medical
chemistry plays the part of such a translator. In this paper, the
potentialities of the method of Quantitative Structure – Activity Relationship (QSAR) for designing of modern
medicines are demonstrated.
Keywords: medicines, designing, QSAR, medical chemistry.
SOME PROBLEMS OF HUMAN
ECOLOGY
Davitashvili M.D.
Abstract. The problems of the
ecology of human are considered. The notion of “the ecology of human” is discussed
from the viewpoint of human rights and responsibilities in reference to the
environment. The ecological factors affecting the man and the ecosystems as a
whole are considered. It is emphasized that the ecological problems should be
solved not only globally, but also for concrete ecosystems with consideration
for their specific features.
Keywords: human ecology, environment, ecosystems, global environmental problems.
SUMMARY
NATURAL ANTIOXIDANT COMPOSITION FOR STABILIZATION OF VEGETABLE FAT
Karchava M.S., Silagadze M.A., Jinjolia Sh .R., Berulava I.O. and Iobidze A.V.
With
the aim of stabilization of vegetable fat with natural antioxidants
compositions of some spices were prepared and investigated. The following
composition was recognized as optimal :
coriander, fennel , sage and rosemary in the 2:1:2:0.5 ratio. At heating
up to 1500C and 2000C,
the peroxide number of fats decreased significantly under the influence of the
abovementioned composition. Based on
the obtained results, it can be inferred that the proposed antioxidant
concentrate is characterized by high activity, inhibiting the oxidation. It can
be recommended for application to the
production of edible fats.
Keywords: natural
antioxidant, vegetable fat, stabilization, spices.
Summary
Monomeric
phenolic substances in grape juice produced by concentrating the polyphenols
Ebelashvili N.V., Chkhartishvili
N.N., Salia E.Sh., Shubladze L.P. and Molodinashvili D.G.
The samples of grape juice produced from the Saperavi
variety by the technology developed by the authors (by concentrating the
polyphenols) and by traditional technology were studied. It was established
that the grape juice prepared by the proposed technology contained much higher
mass concentration of total monomeric phenolic components than the one produced
by the traditional technology. The total mass concentration of carbophenolic
acids was 5.6 times as much, of catechols – 4.8 times as much and anthocyans –
5 times as much.
Keywords: monomeric phenolic compounds, catechols,
carbophenolic acids, flavonols.
Application of the wastes of wine-making to production
of combined feed for cattle and production of high-quality beef and diary
products
Sakuashvili L.D. and Javakhishvili M.L.
Abstract. The process of
production of combined feed for cattle by using the wastes of wine-making
(grape husks, grape stone, fiber, sediment etc.) is proposed. The combined feed
will be produced by using lucerne, nettle and abovementioned wine-making
wastes. The production of the proposed low-cost nutritious combined feed will
promote young cattle breeding, increase the milk productivity, improve the
quality of milk and provide the health safety of people. The proposed combined
feed is recommended for application on diary farms.
Keywords: wine production
wastes, combined feed, milk productivity, beef and diary products.
SUMMARY
CONCENTRATE OF SALLOW THORN FRUIT - A VALUABLE FOOD
ADDITIVE IN THE PRODUCTION OF BISCUITS
Khetsuriani G.S., Pruidze E.G., Dzneladze E.S. and
Khutsidze T.Z.
The
fruit of sallow thorn is a valuable local raw material for production of baked
confection. It is rich in biologically active substances. The concentrate of
the sallow thorn fruit 14-15% in moisture was extracted. As the concentrate
contains such antioxidants as tocopherols and flavonoids, it could be used in
the production of butter biscuits. Based
on the experimental results, it is
recommended to include the concentrate
of sallow thorn fruit into the recipe of butter biscuits in the amount
of 5% of the wheat flour weight.
Keywords: butter biscuit,
sallow thorn, fruit concentrate. tocopherols, flavonoids.
SUMMARY
FUNCTIONAL-PURPOSE
PASTRY WITH LOW CALORIE CONTENT
Tavdidishvili
D.R. , khutsidze T.Z. and
Kipiani A.V.
For
the purpose of producing the functional-purpose pastry with low calorie content
and medicinal –preventive properties, the processes of production of short
pastry and butter biscuit with low calorie content were developed. Based on the
investigation of the structure of the dough and the quality of ready products,
the possibility of replacing butter with
vegetable oil and reducing the amount of fat and eggs in the recipes is
justified. It is recommended to include the extract of black or green tea and
activated carbon into the recipe, which enriches the products with biologically
active substances and gives them
medicinal-preventive properties.
Keywords: pastry, low calorie content, medicinal-preventive properties.
SUMMARY
APPLICATION OF CORN FLOUR TO THE PRODUCTION OF
BISCUITS
Kipiani A.V.,Tavdidishvili D.R. and Khutsidze T.Z.
With
the aim of improving the production process and the consumer properties of
biscuits, corn flour and tangerine pomace mash were introduced into the recipe.
Based on the investigation of structural and mechanical properties of the dough with the
abovementioned additives, the conditions allowing to reduce significantly the
cycle of biscuit production were established. It is shown that the addition of
roast corn flour improves the flavor and aromatic properties of the products,
while the tangerine pomace reduces the
alkalinity and improves the swelling properties of the dough.
Keywords: biscuits,
improvements in production, corn flour, tangerine pomace, consumer properties.
SUMMARY
On the vitamization of diabetic bread
Karchava
M.S., Silagadze M.A., Jinjolia Sh.R., Iobidze A.V., Berulava I.O. and Lezhava K.S.
The investigation results on the vitamization of
diabetic bread are presented. The recipes and the processes of production of
protein-enriched, branny and protein-bran diabetic bread were designed. With
the aim of vitaminizing the diabetic bread, the brier fruit (Fructus Rosae) was selected as a
food additive. The brier fruit is
polyvitaminic with high content of ascorbic acid. The brier berries were milled
and added to the flour in different percentage. The effect of the brier fruit
flour on the physical-chemical and structural-mechanical characteristics of the
dough and the baked diabetic bread was studied. The addition of brier fruit
flour to diabetic bread improved the porosity, the structure and the
organoleptic indices of ready products. As a result of the investigation performed, it was
established that the optimum amount of brier fruit flour was equal to 3-5%, while the content of vitamin C
in ready products made up 8-9 mg%.
Keywords: diabetic bread, vitaminization, brier fruit, food
additive.
SUMMARY
THE STuDY on the POSSIBILITY
OF THE FORMATION of INTERRELATION BETWEEN THE BIOPOLYMER AND MEDICINAL
PREPARATIONS IN MEDICINAL TEXTILE PROdUCTION
Buadze E.P., Pailodze N.R., Sharabidze M.R., Bochorishvili R.I. and Sakandelidze R.V.
The
possibility of formation of the interrelation between the biopolymer and medicinal preparations (MP) in the production
of medical textiles was studied. The spectra of both separate components of the
composition and the composition as a whole were analyzed. From the obtained results
it can be inferred that the components of the medicinal composition hardly
affect each other, which allows assuming that their medicinal properties will
be fully preserved at applying the medicinal composition on special tissues.
Keywords: medicinal textile,
medicinal preparation, biopolymer, interrelation.
SUMMARY
OVERVIEW AND CLASSIFICATION OF STITCH MATERIALS
Vadachkoria Z.A.
A
historical overview of applications of various stitch materials since
antiquity until the present time is presented. The properties
of those materials are discussed, and their classification is given . The properties of the
“ideal” stitch material are described.
Keywords: stitch materials,
overview, classification.
SUMMARY
THE STUDY ON THE FORMATION OF PNEUMOMECHANICAL YARN
Gogoladze M.Sh., Khurtsilava I.A. and Failodze N.R.
The
problems of formation of pneumomechniacal yarn are discussed. It was
established that, with increasing percentage of separated noils, the degree of
yarn breaking decreases due to the removal of weed impurities by the nip comber
when preparing the half-finished product for spinning. Besides, in this case,
the breaking load of the yarn increases, while its irregularity in strength
decreases.
Keywords:
pneumomechanical yarn, noil, comber,
breaking load, strength.
Summary
Influence of the quality of cotton fiber on the yarn yild
Gogoladze M.Sh., Failodze N.R. and
Chitorelidze I.R.
On the basis of the
investigation performed, it can be inferred that, from cotton-wool of the same
selection, type and industrial grade, it is possible to achieve different yield
of the yarn, which will not fail to reflect on the economic efficiency of
spinning manufacture.
Keywords:
spinning manufacture, raw cotton, yarn, yield.
Summary
THE REVIEW of the METHODS of MAINTENANCE of the RELIABILITY of
operation of special-purpose TEXTILE PRODUCTS
Vadachkoria Z.A. and Zhorzholiani
The review of methods of maintenance of the reliability
of operation of special-purpose textile products is given. With this purpose
the concepts of the theory of reliability, the issues of software reliability, the
reliability of the elements of mechanical systems, the reliability of the man
as a link of a complex system, the reliability of power, transport and
computing systems were analyzed. By analysing the above-stated materials, we can
infer that the most important for us are the issues of reliability of the elements
of mechanical systems and the reliability of the man as a link of the complex system.
It is shown that, for maintenance of the reliability of the systems of special-purpose
textiles, it is necessary to study and to provide all above-stated factors, which
we are engaged in at present.
Keywords: special-purpose textiles, reliability of operation, maintenance,
overview.
SUMMARY
THE
STUDY ON THE SHIFT OF THREADS IN THE STITCHES OF CAMOUFLAGE FABRICS USED FOR
MANUFACTURING THE FIELD UNIFORM FOR GEORGIAN SERVICEMEN
Datuashvili
M.V., Dolidze N.A., ugrekhelidze
I.I. and Lursmanashvili L.G.
Based
on the examination of intense physical activities of serviceman and also of the
structure of worn-out uniform, the most
strained and deformed sections of the uniform were revealed. The impact of
displacement of the threads in the stitches of camouflage fabrics under tension
on the working characteristics of military uniform was studied. The
investigation results showed that the shift of threads in the stitches took
place at the initial stage of a single action of tensile forces and, after a break,
its value hardly changed. For improving the working characteristics of military
uniform, there were worked out recommendations concerning the degree of loose
fitting and the use of additional laid-on details and more complex stitches.
Keywords: military uniform, camouflage fabrics, quality of stitches, thread
displacement.
SUMMARY
A STUDY ON THE ANTHROPOMETRIC ADEQUACY OF THE
DESIGN OF MILITARY UNIFORM IN DYNAMICS
Dolidze
N.A., Datuashvili M.V., Chirgadze K.A. and Lursmanashvili L.G.
The issues of designing of the military uniform with account for servicemen’s professional activities both
in statics and dynamics are discussed . The analysis of servicemen’s motions
showed that, during their professional
activity, the dimensions of serviceman’s
figures changed significantly. Based on this analysis, the allowances for loose
fitting of military uniform were established.
Keywords: military uniform, anthropometric
adequacy, design, dynamics.
The influence of
the material packAGE on
the adaptability to
manufacture of the DeSign of leather-haberdashery products
Karkashadze M.I. and Shanidze
Abstract. Both the cost of materials and the process of
manufacture exert influence on the production cost. The influence of the
package of materials used in leather-haberdashery production on the labor
intensity is discussed. The labor-consuming coefficient, which characterizes
the influence of the composition of joined material packages on the operation
time, is introduced. The values of labor-consuming coefficients for separate
groups of materials were defined.
Keywords: leather-haberdashery production, material package,
adaptability to manufacture, labor-consuming coefficient.
summary
On the
nessesity in designing of prophylactic footwear for elderly people
Grdzelidze M.G., Shalamberidze
M.M. and Katamadze A.G.
Akaki Tsereteli State
University, Kutaisi
The paper deals with the problem of designing of prophylactic footwear for
elderly people. The deformations of the foot associated with the ageing factor
are discussed. It is demonstrated that, for normal functioning of elderly men’s
locomotion apparatus, the footwear of special design (with corrective
elements), sizes and shapes with consideration for the foot “sensation limit”
is essential.
Keywords: footwear, designing, foot deformation, corrective elements.
SUMMARY
THE
IMPORTANCE OF IMPROVEMENTS IN THE UTILITARIAN CHARACTERISTICS OF FOOTWEAR FOR
Katamadze A.G., Grdzelidze M.G. and Charkviani I.J.
The
importance of improvements in the utilitarian characteristics of footwear for
normal functioning of feet is shown by the example of footwear for teenagers.
The problems of optimization of such characteristics are discussed. Some
recommendations concerning this task are offered.
Keywords: footwear,
utilitarian characteristics,
optimization, foot.
