MOAMBE
2000
volume 161 number 3 May-June
Mathematics
Z. Todua
On some Properties of Cohomological Functor on a Complete Distributive Lattice with Coefficients in Sheaves
Presented by Corr. Member of the Academy N. Berikashvili, April 27, 1999
Abstract. The notion of sheaves and basic results of sheaf theory are generalized for the category of complete distributive lattices.
Key words: sheaf, lattice.
Mathematics
V. Kvaratskhelia
The Analogue of the Coefficient of Correlation in Banach Spaces
Presented by Corr. Member of the Academy N. Vakhania, March 15, 1999
Abstract. In the paper characterization of the cross-covariance operators in Banach spaces is presented. The notion of the coefficient of correlation in Banach spaces is introduced and its well-known property in one dimensional case is proved for the general case.
Key words: cross-covariance operator, covariance operator, coefficient of correlation.
Mathematics
G. Oniani
On the Strong Differentiation of Multiple Intebrals along Different Frames
Presented by Member of the Academy L. Zhizhiashvili, February 3, 1999
Abstract. Strong differenctiability along different frames of Lebesgue multiple integrals is investigated. In particular, the notion of orbit is introduced and it is proved that every orbit is R-set.
Key words: differentiation basis, rectangular parallelepiped, integral.
Mathematics
U. Goginava
Pontwise Convergence of the Marcinkiewicz Means of Double walsh Series
Presented by Member of the Academy L.Zhizhiashvili, January 11, 1999
Abstract. In this paper we prove that for the two-dimensional Walsh-Fourier series the maximal operators of the Marcinkiewicz means of a martingale are bounded from H
p,q([0,1]2) to Lp,q([0,1]2), (0 < q Ј Ґ, p > 2/3) and are of weak type (1,1), Moreover, the Marcinkiewicz means snf of a function f О L([0,1]2) converge a. e. to f as n ® Ґ.Key words:
Martingale Hardy spaces, Walsh functions, Marcinkiewicz means.
Mathematics
A. Danelia
On Approximation Property of Cesaro Transformations
Presented by Member of the Academy L. Zhizhiashvili, May 31, 1999
Abstract. In the present work approximation state of Cesaro transformations of multiple conjugate trigonometric series of function of the class H(
w, L(Tm)) is considered.Key words:
modulus of continuity, conjugate functions of multiple variables, Vesaro mth transformation.
Mathematics
I. Tsereteli
On Continuous One-to-One Mappings of Spaces with Finite Order Remainder in Sense of H. Inassaridze
Presented by Corr. Member of the Academy H. Inassaridze, March 18, 1999
Abstract. The continuous one-to-one mappings of Tychonoff spaces with finite order remainder are studied. The examples of such spaces and mappings are given.
Key words: one-to-one, continuous, mapping, compactification, Tychonoff.
Mathematics
Z. Tediashvili
Uniqueness Questions in the Inverse Problems of the Potential Theory
Presented by Member of the Academy T. Burchuladze, May 31, 1999
Abstract. Inverse problems of the potential theory are considered for two- andthree-dimensional domains. The uniqueness theorems are proved within specific restrictions for boundaries of the domains and densities of potentials.
Key words: inverse problems, potential theory.
Mathematics
G. Khimshiashvili
On One Class of Affine Possion Structures
Presented by Corr. Member of the Academy N. Berikashvili, March 22, 1999
Abstract. We introduce a class of affine Poisson structures defined by a simple explicit formula and discuss some properties of such structures. It is shown that this construction leads to interesting examples of Poisson structures on affine algebric varibles. For such structures on hypersurfaces in C3, the zero-dimensional Poisson homlogy is described in terms of Milnor numbers of Casimir polynomials. Some generalizations and open problems are also discussed.
Key words:
Jacobian, Poisson brackets, exact Poisson structure, Casimir function, poisson homology, Milnor number.
Mathematics
G. Nadibaidze
On the Rearranged Block-Orthonormal and Block-Independent Systems
Presented by Member of the Academy L. Zhizhiashvili, March 22, 1999
Abstract. It is studied that if for the sequence {N
k} the condition
is fulfilled and Dk
= (Nk, Nk+1),
then there exists a rearrangement of functions of
Dk-orthonormal Dk-independent
system {jn}
such that the condition 
guarantees the convergence almost everywhere of series with respect to
rearranged system 
.
And if {jn}
is a Dk-orthonormal
system, then there exists a rearrangement of {jn},
such that for rearranged system
the strong law of large numbers holds true.
Key words:
block-orthonormal systems, block-independent systems.
Mathematics
M. Amaglobeli
Algorithmic Problems Relating to Varieties of Exponential Nilpotent Groups
Presented by Corr. Member of the Academy H. Inassaridze, March 2, 2000
Abstract. Main algorithmic problems for nilpotent exponential groups are considered.
Key words: nilpotent group, algorithmic problem.
Mathematics
I. Dochviri
On Semicompact and Precompact Bitopological Spaces
Presented by Corr. Member of the Academy N. Berikashvili, October 12, 1999
Abstract. In the present paper we introduce (i, j)-semicompact and (i, j)-precompact bitopological spaces (i, j
О {1;2} and i № j) and study their properties.Key words:
bitopological space, (i, j)-semicompact and (i, j)-precompact bitopological spaces.
Mathematics
I. Khazhalia
Orthonormal Systems in Orlicz Spaces
Presented by Member of the Academy L. Zhizhiashvili, May 10, 1999
Abstract. In this article the analogue of the classical theorem Riesz and Fisher and its results for the Orlicz spaces are obtained.
Key words: orthonormal systems, Fourier series, Orlicz spaces.
Mechanics
T. Iamanidze, M. Losaberidze
On Dynamic Effect Caused by the Action of Concentrated Force on Half-Plane
Presented by Member of the Academy R. Adamia, April 25, 2000
Abstract. We consider one-phase isotropic elatic half-plane disturbed by the constant speed motive concentrated force located on the boundary along the normal. The formulae determining the character of components change in time are obtained.
Key words: elastic half-plane, normal and tangential stresses boundary conditions.
Theory of Elasticity
D. Gordeziani
On Rigid Motions in Vekua Theory of Prismatic Shells
Presented by Member of the Academy T. Burchuladze, June 8, 1999
Abstract. In the paper, the problem of rigid motions for the mathematical model proposed by I. Vekua for prismatic shells is investigated and expressions for rigid motions are obtained.
Key words: rigid motions, prismatic shells.
Physics
T. Pagava, Member of the Academy G. Tsintsadze, Z. Basheleishvili, M. Taktakishvili
The Peculiarities of the Kinetics of Annealing of A-centres in the n-type Silicon Crystals Irradiated with High Energy Particles
Presented March 15, 1999
Abstract. Samples on n-type silicon irradiated with 2 and 8 MeV electron and 25 MeV proton beams have been studied. It has been shown that the higher the irradiation nergy, the lower the temperature of the annealing of A-centres is.
The overlapping of effective radii caused by the increase of concentration and sizes of disordered areas takes place while iraadiation with large doses of high energy particles. Huge inclusions of P-type are formed. This is equal to reduction of disordered areas concentration (i.e. the decreasing of the quantity of effective traps of vacancies) that, apparently is the cause of the observed changes in the annealing kinetics of A-centres.
Key words: n-type silicon, irradiating with electron and proton beams, the irradiation dose and evergy, the annealing kinetics of A-centres.
Physics
S.B.Doma, K.K.Gharib
The Nuclear Dipole Moment in the Supermultiplet Model of the Nucleus
Presented by Member of the Academy T. Kopaleishvili, January 25, 2000
Abstract. The supermultiplet model of the nucleus is applied to derive the mean-values of the magnetic dipole moment operators of the orbital and the spin-isospin coordinates of the nucleons. The nuclear wave functions of the 3H, 5He and 8Li nuclei, which are obtained by using the unitary scheme model basis functions, are used in the calculations of the magnetic dipole moments of these nuclei. The residual interaction used in these calculations consists of central, tensor, spin-orbit and quadratic spin-orbit terms with Gaussian radial dependences.
Key words:
supermultiplet model, nuclear magnetic dipole, dipole moment.
Physics
L. Chotorlishvili, V. Tsagareli
Low-temperature Phonon Echo in Spin Glasses
Presented by Corr. Member of the Academy T. Sanadze, August 23, 1999
Abstract. Within the framework of model of two-level systems, two-impulse phonon echo has been studied. We have obtained expression of dependence of intensity of echo signal on time.
Key words: two-level systems, spin glasses, dielectric glasses.
Geophysics
M. Odisharia, N. Chiabrishvili, D. Kirtadze
Stationary Experimental Installation for the Measurement of the Spectral Transparency of the Atmosphere
Presented by Corr. Member of the Academy T. Chelidze, January 25, 1999
Abstract. A brief description of an experimental stationary spectral installation for solar radiation spectra registration is presented. A sample of a solar radiation spectrum record in the range of 1300-700 cm-1 is given.
Key words:
spectral transperency of the atmosphere.
Geophysics
N. Kachakhidze
Electric Field Potential Gradient of Atmosphere as a Possible Precursor of Earthquakes
Presented by Member of the Academy B. Balavadze, August 23, 1999
Abstract. disturbances of atmospheric electric field potential gradients have been studied for ten days periods preceding the preparation of M
і 4.3 earthquakes occurred in 1980-90 in the Caucasus. The influence of the weather factors on the field values has been estimated and the anomalies are determined by the method of exclusion, which may be considered as the prerequisites of earthquakes.Key words:
earthquake, precursor, cloudness, anomaly.
Geophysics
T. Davitashvili, D. Gordeziani
Mathematical Model with Nonlocal Boundary Conditions for the Atmosphere Pollution
Presented by Member of the Academy B. Balavadze, March 5, 1999
Abstract. A regional mathematical model of transporting and dispersion of the atmosphere admixture under nonlocal boundary conditions is discussed in this article. The new three-dimensional mathematical model with nonlocal boundary conditions is given.
Key words: atmosphere pollution, nonlocal boundary condition.
Geophysics
A. Topchishvili
Reconstruction of Dynamics of Climatic System Using Data of Time Sequences for Tbilisi City
Presented by Member of the Academy B. Balavadze, June 16, 1999
Abstract. In the given work the possibility of finding of the dimension of climatic attractor and minimal dimension of phase space consisting of the mentioned attractor is presented.
Key words: nonlinear dynamics, phase space, attractor.
Analytical Chemistry
Sh. Shatirishvili, I. Ninoshvili
Determination of Typical Organic Acids and some Sugars in Wines by Liquid Chromatographic Analysis
Presented by Member of the Academy T.Andronikashvili, March 1, 1999
Abstract. Organic acids and some sugars were determined in “Jajgetu” sirt if wgute tabke wubes “Jajgetu” abd “Rkatsiteli”. Output time and values of separation coefficient are calculated. The quantitative analysis was realized according to inner standard or using lactic acid. The amount of theoretical plates necessary for separation was estimated.
Key words: chromatographic analysis, table wines.
Analytical Chemistry
N. Chkhikvishvili, G. Makharadze, G. Supatashvili
Stability Constants of Zinc Mononuclear Hydroxocomplexes
Presented by Member of the Academy G. Tsintsadze, March 22, 1999
Abstract. By the use of stability method the stability constants of zinc mononuclear hydroxocomplexes (ZnOH+, Zn(OH)02) were calculated:
b1 = 4.69x106, b2 = 4.52x1011 (m = 0.01 (KNO3) solid phase-suspension of zinc oxide).Relative portion of hudrolyzed forms of zinc is calculated at different pH. It is established that at the Ph being characteristic for natural waters, dominated form in solution is ZnOH+.
Key words:
zinc, zinc oxide, hydrolysis, mononuclear hydroxocomplexes, stability constant, constant of hydrolysis.
General and Inorganic Chemistry
G. Supatashvili, G. Makharadze, N. Karsanidze, N. Chkhikvishvili
Zinc in Surface Waters of Georgia
Presented by Member of the Academy G. Tsintsadze, March 1, 1999
Abstract.Concentration of dissolved form of zinc in surface waters of Georgia varies in the range of 1.0-29.0
mg/l. With the increase of water mineralization the content of dissolved zinc increases. Dissolved form of zinc is mainly presented by zinc fulvates constitute approximately 20 % of common content.The rivers floating suspensions and the buttom sediments contain 82-246 and 70-210 mg/kg of zinc. The content of zinc increases with rising the dispersion degree of solid phase.
Key words:
surface waters, atmospheric sediments, zinc, migration forms.
General and Inorganic Chemistry
R. Gigauri, M. Chabukiani, A. Khidesheli, G. Metreveli
Synthesis and Research of Sodium Monoselenoarsenate
Presented by Member of the Academy T. Andronikashvili, March 22, 1999
Abstract. The optimal conditions of synthesis of high purity sodium monoselenoarsenate are established. The purposing product content of admixtures is investigated.
Key words: arsenic, sodium monoselenoarsenate.
Organic Chemistry
Corr. Member of the Academy L. Khananashvili, N. Kupatadze, N. Kobakhidze, M. Gverdtsiteli, E. Markarashvili
Theoretical Study of Thienyl-Containing Organosilanes within the Scope of Quasi-ANB-matrices Method
Presented February 15, 1999
Abstract. Theoretical incestigation of thienyl-containing organosilanes was carried out within the scope of quasi-ANB-matrices method.
Key words: thienyl, organosilanes, quasi-ANB-matrices.
Physical Chemistry
G. Papava, Z. Tabukashvili, E. Gavashelidze, N. Dokhturishvili
Investigation of the Hardening Process of the Polymer Compositions Obtained on the Basis of the Novolacquer-Type Oligomers and Diatomites
Presented by Member of the Academy T. Andronikashvili, August 10, 1998
Abstract. The diatomite-constaining novolacquer-type polymer compostition thermal and thermomechanical properties have been studied in relation to the volume of the hardener and quantity of diatomite in the composition.
Key words: thermoresistance, heat-resistance, polymer composition, diatomite, hardener.
Physical Chemistry
L. Khvtisiashvili, Z. Dzotsenidze, G. Bezarashvili, D. Lordkipanidze, M. Katsitadze
Study of Two Inhibitors’ Simultaneous Action on Inflammation of the Detonating Mixture
Presented by Member of the Academy K. Japaridze, April 19, 1999
Abstract. The effect of simultaneous action of triethylamine and tetrachloromethane additives on the explosion limit of the detonating mixture has been investigated. It has been established that in the case of inhibitors’ high content in combustible mixture, their action is of antagonistic character by mechanism.
Key words: inflammation, inhibitor, antagonistic effect.
CHEMICAL TECHNOLOGY
I. Mikadze, N. Kutsiava
Reliability Models of some Chemical Technological Systems
Presented by Member of the Academy G. Tsintsadze, December 28, 1999
Abstract. The problems of reliability of chmical engineering system are considered when failure streams are distributed by general law and check periodicity, check time is distributed by general Erlang law. The expressions of availability factor and other important characteristics of reliability are determined.
Key words: reliability, renewal, failure, operating time.
INFORMATICS
N. Chkhaidze
Time Redundancy Probability Characteristic in Semi-Markovian Walk Problems
Presented by Corr. Member of the Academy A. Prangishvili, November 9, 1999
Abstract. A stochastic network is considered where the service of incoming message happens during its random walk in semi-Markovian system from input to output moment. Analytical expressions of time-probability characteristics of service as well as numerical characteristics of service cycle are obtained in terms of Laplace-Stieltjes transformation.
Key words: failure, service, random walk.
ECONOMIC GEOGRAPHY
L. Shalvashvili
On the Application of Tbilisi Urban Agglomeration Bioresources
Presented by Member of the Academy Z. Tatashidze, November 11, 1998
Abstract. The article deals with the bioresources of Tbilisi urban agglomeration, biomass application and the perspectives of their organization.
Key words: agglomeration, bioresources, biomass.
ECONOMIC GEOGRAPHY
R. Tevzadze
On Administrative and Territorial Organization of Georgia
Presented by Corr. Member of the Academy L. Chikava, March 15, 1999
Abstract. Durnig the whole historical period of exstence of the Georgian state system, pricniples of federalism and unitarism were highly interrelated and represented a whole phenomenon. Consequently the model of future territorial-administrative organization of Georgia must illustrate certain synthesis of federalism and unitarism with strictly determined responsibilities of the center and the regions. It will be better if the borders of administrative territorial units and historical provinces with regional establishment and federal signs (local government) coincide.
Key words: unitary, federalism, parity, autonomy, historical provinces.
METALLURGY
Z. Mushkudiani, T. Jalishvili, N. Gvamberia, B. Margiev, A. Gabisiani
Thermodynamics of Steesl Desulphurization by Hard Slag-Forming Mixtures
Presented by Corr. Member of the Academy I. Baratashvili, August 3, 1998
Abstract. Full thermodynamic analysis of treatment of low-carbon and medium-carbon steels by hard slag-forming mixtures at temperature interval of 1700-2000K was carried out. It was determined that desulphurization process in tube steel grades obtains the highest level of intensity within temperature interval of 1700-1873K at optimal content of slags in system CaO-CaF
2-Al2O3.Key words:
thermodynamics, desulphurization, steel, slag, activity.
METALLURGY
Member of the Academy I. Jordania, V. Shengelaya, D. Melashvili, S. Doborjginidze, G. Kevkhishvili, M. Shengelaya
The Effect of Crystallizer Surface Temperature and Crack on Hardening Rate of Constant Pouring Crust
Presented September 14, 1999
Abstract. The effect of surface temperature of crystallizer and a crack formed between continuous pouring and surfaces of crystallizer on hardening rate in the process of continuous steel pouring was considered using mathematical modelling.
Key words: crack, pouring.
MACHINE BUISDING SCIENCE
Member of the Academy R. Adamia, A. Gogava
On Local Dependence of Transient Process on the Parameters of the System
Presented February 1, 1999
Abstract. The possibility of reduction of dynamic loadings in driving lines by means of optimal selection of parameters of the given system is considered.
Key words: dynamic loadings, transient process, optimization, elastic moments.
HYDRAULIC ENGINEERING
R. Kiladze
Space Variability of Soil Water Conductivity and its Effect on Calculation of Melioration System
Presented by Member of the Academy Ts. Mirtskhoulava, November 21, 1999
Abstract. We have studied the effect of infiltration space changeability on the indices of irrigation quality on the basis of computer simulation of border irrigation, application of complete theoretical basis and numerical methods. It has been established that this effect is insignificant which makes easy to choose the calculating parameters of melioration system.
Key words: border irrigation, numerical modelling, infiltration.
AUTOMATIC CONTROL AND COMPUTER ENGINEERING
V. Mdzinarishvili
Antagonistic Model of Separatistic Movement
Presented by Member of the Academy V. Chichinadze, August 23, 1999
Abstract. Mathematical model of separatistic movement in individual country has been constructed. The moles consists of autonomous formation (F) and metropolis being in opposition to each other. This model is described by differential equation systems of a new type.
Key words: model, differential.
AGRICULTURIAL CHEMISTRY
J. Tsotsonava
Influence of Prolonged Use of Potassic Fertilizers on Soil Acidity in Citrous Garden
Presented by Corr. Member of the Academy T. Urushadze, August 20, 1999
Abstract. It has been established, that long-term (27 years) application of potassic fertilizers on the basis of NP results in soil acidification, especially within 0-20 cm depth and 1.5 m radius from the plant stem. The pH index of water and KCl filtrates decreases, the exchange and hydrolytic acidity increase. In case of SO42--ion-containing fertilizers (K2SO4, K2SO4
ЧMgSO4) the exchange acidity of soil is mainly conditioned by Al3+ ions, while in control and NP variants by (H+) ions.Key words:
soil acidity, potassic fertilizers, exchange acidity, hydrolytic acidity.
FORESTRY
Member of the Academy G. Gigauri, Sh. Aptsiauri, L. Dolidze, R. Tkebuchava, K. Manjgaladze, Sh. Ebralidze
General Dynamic Model of Structural Changes of Health Resort Forests (on the Example of Borjomi Plateau)
Presented December 28, 1998
Abstract. The article deals with the changes for health resort forests on the example of Borjomi plateau surrounding pine, spruce and mixed forests. The obtained results represent the theoretical basis defining the necessary parameters for optimal management of Georgian health resort forests in future.
Key words: resort forests.
BOTANY
M. Mosulishvili
Directions of Evolution of Subtribe Koleriinae (Gramineae)
Presented by Corr. Member of the Academy G. Nakhutsrishvili, March 29, 1999
Abstract. The survey was conducted to understand the character of evolution and phylogeny of the subtribe Koeleriinae. The work is based on multivarious studies (morphology, anatomy, caryology, geography, ecology) of the subtribe Koeleriinae represented in the Caucasus genera (Trisetum, Trisetaria, Rostraria, Koeleria). The analysis reveal, that genus Trisetum is very close to the general Trisetaria and Rostraria on the one hand, and also to the genus Koeleria, on the other hand. Among these four genera of subtribe Koeleriinae the genus Trisetum may be distinguished, representing basis of the subtribe. From original primitive ancestor groups of Trisetum two major directions of evolution began to develop, as a result of which the new genera of subtribe Koeleriinae were formed.
Key words: Angiosperms, Gramineae, Trisetum, Trisetaria, Rostraria, Koeleria, evolution, phylogeny.
BOTANY
G. Mikeladze, L. Shanshiashvili, R. Gagnidze, D. Mikeladze
Mannose-Specific Lectins of Galanthus (Amaryllidaceae) in the Endemic Species of Georgian Flora
Presented by Member of the Academy A. Nakhutsrishvili, April 26, 1999
Abstract. The content of Galanthus nivalis agglutinin (GNA) in bulbs of different endemic species of Galanthus, G.woronowii, G.caucasicul and D.kemulariae, was studied. The bulbs were homogenized in the extraction medium and after centrifugation at 10 000 g the supernatants were purified by filtration. The filtrates were applied on the mannose-agarose column and lectin was eluted by 0.1 M mannose. The eluates were concentrated and analyzed by SDS-PAG electrophoresis and isoelectric focusing. Only one protein band of 12 kDa and 5.7 isoelectric points is obtained. It was found that only bulbs of G.woronowii contained GNA in high concentration.
Key words: electrophoresis, isoelectric focusing, extraction. plant peptides.
PLANT PHYSIOLOGY
M. Kikvidze, N. Janukashvili, G. Badridze, Sh. Chanishvili
Role of Riboflavin in Grapevine Metabolism
Presented by Corr. Member of the Academy N. Nutsubidze, April 5, 1999
Abstract. Exogenous riboflavin influence or riboflavin forms content, respiration intensity and flavinic respiration, activity of some flavoproteid enzymes and endogenous growth regulators in grapevine leaves were studied. It was established, that treating plants with riboflavin solution causes increaseng its forms in tested leaves. Correspondingly, the share of flavinic respiration, through the total respiration was increased. The activity of flavoproteid enzymes was intensified. Riboflavin inhibited the activity of endogenic growth stimulators. As it seems, the biosynthesis of riboflavin is photosensitive process.
Key words: riboflavin, respiration, flavinic respiration, growth regulators, grapevine.
PLANT PHYSIOLOGY
A. Apakidze, O. Buadze
Some Anatomo-Morphological and Functional Characteristics of Vine
Presented by Member of the Academy G. Kvesitadze, February 15, 1999
Abstract. “Rkatsiteli” wine leaf ultrastructural indexes and water regime (forms of water, transpiration, water deficite) have been studied. “Rkatsiteli” leaf parenchyma cells were characterized with stable constitutional structures and elastic regulatory apparatus of water balance that is bound with its high resistance to environmental factors.
Key words: vine variety “Rkatsiteli”, ultrastructure, bound and free water, transpiration.
GENETICS AND SELECTION
N. Gotsiridze
Innovation in the Performance Prediction of Crossbreds
Presented by Corr. Member of the Academy P. Naskidashvili, April 19, 1999
Abstract. A new method is suggested to estimate the effect of heterosis in selection of crossbreds lacing the perental productive value and keeping them under similar conditions with the maternal breed.
Key words: selection, heterosis, prediction, cattle.
HUMAN AND ANIMAL PHYSIOLOGY
I. Labadze, Member of the Academy M. Khananashvili, M. Gogoberidze, N. Devidze
Influence of Partial deprivation of the Social Interactions on the Rats’ Self-Regulatory Begavior
Presented February 8, 1999
Abstract. Influence of partial deprivation (tactile and visual isolation) of intraspecies interactions on the self-regulatory behavior in the early ontogenesis (1 month) of the rats was investigated. The comparative study has shown that these groups of the animals significatly differ from each other as concerned with the self-regulatory behavior regularities. It was found as well that the isolated animals were much more shy than the control ones.
Key words: self-regulatory behavior, social deprivation, active avoidance, rats.
HUMAN AND ANIMAL PHYSIOLOGY
D. Tsintsadze, E. Kareli, Member of the Academy M. Khananashvili
Influence of Amiridin on the Stress-Induced Behavior Regulation
Presented February 23, 1999
Abstract. The role of Amiridin in the stress-induced behavior regulation has been studied in the male adult rats. The above preparation was administered by animal itself, which may be viewed as an analogue of the self-stimulation method. Positive influence of Amiridin self-administration on the unification of the two defensive conditioned reflexes was found in the experiments. Such influence was evidenced by increase of the adequate responses from 20-30% up to 40-50%. These behavioral responses are considered as a self-regulatory behavior, which must play biologicall positive role hence increasing the organism’s protective abilities against the pathologies.
Key words: stress, self-regulation, reflexes, avoidance, rats.
HUMAN AND ANIMAL PHYSIOLOGY
M. Gogichadze, N. Omiadze, Member of the Academy T. Oniani
Dynamics of some Parameters of Cortical Electrical Activity and REM in Cat’s Sleep-Wakefulness Cycle during Alcoholization
Presented July 5, 1999
Abstract. The effects of ethanol administration for several days on the structure of sleep-wakefulness cycle and some of its electroencephalographic parameters were studied in cats. The analysis of the data shows that during alcoholization the spindle activity frequency is changed, and less changes are observed in the dynamics of ponto-geniculo-occipital-spikes and rapid eye movements. This supports the suggestion that during ethanol administration the slow-wave sleep mechanisms are more disturbed than the mechanism of the paradoxical sleep.
Key words: sleep-wakefulness cycle, alcoholization, withdrawal.
BIOPHYSICS
B. Vishnopolsky, M. Pirskhalava, G. Managadze, M. Grigolova, Member of the Academy M. Zaalishvili
The Assessment of the Effect of Specific Interactions on the Fibril Stucture Using the Analysis of Amino Acid Sequence of Fibril Parts of Myosin II
Presented February 22, 1999
Abstract. The distribution of hydrophobic residues and pairs of hydrophobic residues that destabilize
a-helical coiled-coil in fibrillar parts of heavy chains of different myosins II have been studied. LMM and S2 have been compared from the viewpoint of the distribution of these residues and pair of residues. It has been shown, that the factors that destabilize coiled-coil are mainly concentrated in S2 fragments of myosin heavy chains as clusters, that naturally contribute to the formation of backhround, that destabilize the structure in this fragment.Key words:
myosin, coiled-coil, hydrophobic residues, distribution.
BIOCHEMISTRY
A. Kalandiya, M. Vanidze, S. Papunidze
Kiwi Plant Monosaccharides
Presented by Corr. Member of the Academy N. Nutsubidze, January 15, 1999
Abstract. Free monosaccharides: glucose, fructose and rhamnose were identified in kiwi plant fruits by chromatography method (paper chromatography - solvent system 1. n-butanol-acetic acid-water (4:1:5), 2. n-butanol-pyridine-water (6:4:3); gas-liquid chromatography with Ultra I capillar column and ion detector, the temperature gradient was 180-2900C at 100C/min increase).
Key words:
kiwi plant fruits, monosaccharides.
BIOCHEMISTRY
M. Abutidze, N. Mchedlishvili, G. Pruidze
Tfhe Effect of Metal Ions on Tea Leaves b-glucosidase Activity
Presented by Corr. Member of the Academy N. Nutsubidze, January 25, 1999
Abstract. The effect of different concentrations of divalent metal ions on tea leaves
b-glucosidase has been studied. It has been shown that Fe2+ cause activation and Zn2+ and Co2+ - inhibition of b-glucosidase. The low concentrations of Cu2+, Mg2+ and Mn2+ increae and the high concentrations of them decrease b-glucosidase activity.Key words: tea, leaves,
b-glucosidase, metal ions, enzyme, activity, concentration.
BIOCHEMISTRY
N. Koshoridze, T. Lekishvili, Corr. Member of the Academy N. Aleksidze
Neurolectins from Chick Brain Subcellular, Neuronal and Glial Cells Enriched Fractions
Presented February 15, 1999
Abstract. The lectins were isolated from neuronal and glial and different subcellular fractions of 30-day old chicks brain. In special experiments their carbohydrate specifity was studied by hapten-inhibitory technique. It was established, that the lectins differ in their carbohydrate specificity, but there is the simularity between these neurolectins. Most of them are high sensitive to N-acetyl-D-glucosaine, galactose, lactose, mannose and inosite.
Key words: lectin, glia, neuron, subcellular fraction, carbohydrate specificity.
BIOCHEMISTRY
S. Simonishvili, L. Rusia, K. Kuridze, M. Simonidze, N. Svanidze, R. Kupatadze, Member of the Academy M. Zaalishvili
Method of Chemical Modification in a-Actinin and Actin Interaction Study
Presented February 22, 1999
Abstract. Using the bifunctional and monofunctional reagents in the study of muscle proteins
a-actinin and actin interaction we have established, that there are two sites for a-actinin linkage on the polypeptide chain of actin and actin-binding center of a-ctinin is oriented so, that the histidine and lysine amino residues are located on the surface of the a-actinin molecule and the tryptophan residues - in the depth.Key words:
a-actinin, actin, chemical modification.
MICROBIOLOGY AND VIROLOGY
D. Pataraya, M. Gurielidze, Corr. Member of the Academy N. Nutsubidze
Biological Method of Activity Determination of Antibiotic Compounds Produced by Actinomycetes
Presented February 8, 1999
Abstract. Antibiotic activity of actinomycetes freshly isolated from plant roots and rhizosphere was studied by biological methods.
Among the studied actinomycetes the strains Streptomyces sp. 114 and Streptomyces sp. 137 obtain the highest antibiotic activity against phytopathogenic fungi and gram-positive bacteria.
Key words: actinomycetes, antibiotic activity, phytopathogenic fungi, plant diseases.
PHYTOPATHOLOGY
L. Mshvidobadze
New Species of the Tracheomycosis Causative Fungi
Presetned by Corr. Member of the Academy I. Eliava, April 21, 1999
Abstract. The new species of pathogenic mycromycetes of xylem have been exposed and determined in the study of the perennial plant tracheomycoses, which are representetives of imperfect fungi class Deuteromycetes, order Hyphomycetales, family Moniliaceae, genera Cephalosporium and family Stilbellaceae, genera Graphium.
Key words: perennial plants, tracheomycoses, new species.
ZOOLOGY
J. Ratiani, D. Tskipurishvili
The Use of Genetic Methods in the Genus Apodemus Wood Mouse Taxonomy
Presented by Corr. Member of the Academy I. Eliaca, May 31, 1999
Abstract. We present the results of the rotary interbreeding of the different groups of the genus Apodemus wood mouse. On the basis of the study of a vital activity and reproduction ability of the “hybrids” of F1, F2 and F3 generations it is shown that the wood mice with the yellow breast spots and without them belong to the same species Apodemus sylvaticus. The presence of the yellow spot on the breast of some individuals is genetically determined and its phenotypical manifestation occurs at a definite age of the mouse, but the shape and size of the spot are of the paragenetic character.
Key words:
taxonomy, wood mouse, yellow breast spot, coloration, age group.
CYTOLOGY
G. Kvinikhidze, V. Akhalkatsi, N. Alania
Ultrastructural Changes of Fish Retina Gengliar Cells during Stimulation and Inhibition of Protein Synthesis
Presented by Corr. Member of the Academy I. Eliava. August 23, 1998
Abstract. The influence of flashing light and actinomycin-D on fish retina gangliar cells has been studied. Flashing light causes the increase of protein synthesis and corresponding changes in ultrastructure of cells. The action of actinomycin -D inhibiting transcriptive process causes opposite changes in the ultrastructure of cells.
Key words: retina gangliar cells, protein synthesis flashing light.
CYTOLOGY
G. Tsintsadze, K. Chakhunashvili
Formed Elements of Blood during Atherosclerosis
Presented by Member of the Academy T. Chanishvili, December 20, 1999
Abstract. Structural and cytochemical changes of formed elements of blood during atherosclerosis have been studied. Our examinations testify the presence of nonspecific antigen in the wavelike course of the disease.
Key words: atherosclerosis, erythrocytes, leukocytes.
EXPERIMENTAL MEDICINE
G. Pataraya
The Ultrastructure of the Myocardium during the Administration of Glutathione Following the Exposure to Lead
Presented by Corr. Member of the Academy T. Dekanosidze, February 22, 1999
Abstract. Glutathione was given to Wistar line rats after lead ion loading, Myocardiocytes ultrastructural examination reveals dysmetabolic changes. Administration of glutathione and chelators combination seems to prevent effectively deleterious effects of lead.
Key words: Myocardium, ultrastructure, lead exposure, glutathione.
EXPERIMENTAL MEDICINE
K. Robakidze
The Action of Microorganism’s Dependence to Antibiotics on Functional Activity of Neutrophils as one of the Means of Senstivity of Etiological Agents for Determination to Antibiotics during Pustular Disease of Skin
Presented by Corr. Member of the Academy N. Tatashvili, August 20, 1999
Abstract. In this study, we report that mutual effect of antibiotic and microorganism sensitive to this antibiotic causes the increase of neutrophils functional activity. We have elaborated the method which helps to determine the sensitivity of microbes to antibiotics by means of study of phagocyte and metabolic activity of neutrophils.
Key words: microorganism, antibiotic, neutrophil.
EXPERIMENTAL MEDICINE
T. Tsintsadze, E. Tuskia, A. Meipariani, Z. Alavidze, N. Gongadze, R. Katsarava
Influence of “PhagoBioDerm” on Healing of Superficial Experimental Wounds
Presented by Member of the Academy N. Javakhishvili, May 5, 2000
Abstract. On the basis of newly found biodegradable polymers new dressing for wounds (“artificial skin”) PhagoBioDerm was made. It was experimented on rabbits revealing wonderful results in reducing the inflammatory reactions and accelerating regeneration processes of the wounds.
Key words: biodegradable polymers, biocomposites, bacteriophage, controlled release, wound healing.
PALAEOBIOLOGY
I. Shatilova, L. Rukhadze, N. Mchedlishvili, N. Makharadze, M. Kipiani
Stratigraphical Position of the Meotian Stage on the Basis of Pollen Data from the Neogene Deposits of Western Georgia
Presented by Corr. Member of the Academy G. Mchedlidze, March 15, 1999
Abstract. New pollen records from the Neogene deposits of Western Georgia in favour of Miocenian age of the Meotian stage are given.
Key words: Pollen records, Meotian, Western Georgia, stratigraphical position.
HISTORY OF ART
E. Tserodze
On Birzina Kvernadze’s Musical Language
Presented by Member of the Academy V. Beridze, August 10, 1998
Abstract. Creative work of contemporary Georgian composer B. Kvernadze is extensive from the idea-artistic and genre viewpoints. Theatrical mentality is composer’s basic feature, which manifests itself not only in theatre genres. Kvernadze’s symphonic music is permeated with theatre element, and theatre music, in its turn, is based on symphony development logic.
Key words: multiphase, cluster, poly-intonation, poly-melodism, poly ostinato.
HISTORY OF SCIENCE
Corr. Member of the Academy D. Jokhadze, L. Razmadze
Kita Abashidze and Charles Darvin’s Evolutionary Theory
Presented July 23, 1998
Abstract. At the end of the last century Georgian literary critic and publicist Kita Abashidze, who was the student and follower of French researcher Fernand Brutenier tried to apply the principles of Darvin’s evolutionary theory to the problems of the development of Georgian literature.
Key words: Charles Darvin, evolutionary theory.
HISTORY OF SCIENCE
R. Kobalava, R. Chagunava, N. Kutsiava, Member of the Academy G. Tsintsaze
Role of P. Bagrationi in the Development of Ferrocyanide Chemistry
Presented August 23, 1999
Abstract. We present Petre Bagrationi’s research concerning solubility of gold, silver and copper in potassium ferrocyanide, which was ignored by gistorians of science. The method suggested by Bagrationi was an important novelty in the practice of gilding by sinking.
Key words: potassium ferrocyanide, P. Bagrationi, electrolyte.