volume 167 number 3
Member of the Academy L. Zhizhiashvili
On A. N. Kolmogorov's Theorem on Weak (1,1) Type of One-Dimensional Operator of Conjugation and its Analogues for Classical Operators Being Used in Modern Multidimensional Harmonic Analysis
Presented December 24, 2002
Abstract. It is obtained that the majorants of Èesaro and Abel-Poisson means of positive order of the series conjugate to multiple Fourier trigonometric series have not weak (1,1) type.
Key words: operator of conjugation, Èesaro and Abel-Poisson means, weak (1,1) type.
On Fourier-Bessel Series for some Class of Functions
Presented by Member of the Academy L.Zhizhiashvili, July 23, 2002
Abstract. In this article there is studied the question of belonging to the Zygmund and Hw-classes for given function in terms of function's Fourier-Bessel coefficients.
Key words: monotony convergence, module of continuity.
On Generalization of One Quasivariational Inequality
Presented by Corr. Member of the Academy, R. Bantsuri, November 19, 2002
Abstract. The unilateral quasivariational inequality (the so-called Implicit Signorini Problem) for a second order elliptic coercive form is stated in more general terms, also with bilateral boundary restrictions. The similar problem is also considered with domain unilateral and bilateral restrictions with Neumann condition on boundary. The unique solvability of these problems is proved. For the unilateral problems the same is proved in the noncoercive case.
Key words: implicit Signorini problem, quasivariational inequality, unilateral and bilateral restrictions, supersolution, coercivity property.
Relative Canonical Homological and Cohomological Groups of Infinite (Finite) Cycles and Finite (Infinite) Cocycles of an Arbitrary Metric Space
Presented by Corr. Member of the Academy D.Baladze, July 13, 203
ABSTRACT. In this paper Alexandroff-Èech homological and cohomological groups of infinite (finite) cycles and finite (infinite) cocycles of arbitrary metric spaces are explained. For these groups theorems of duality are proved.
Key words: homological and cohomological groups; finite and infinite cycles and cocycles.
On the Fibers of Proper Polynomial Mappings
Presented by Member of the Academy R.Gamkrelidze, December 12, 2002
ABSTRACT. We establish that each orientable compact smooth manifold is diffeomorphic to a component of fiber of a certain proper quadratic mapping. In the opposite direction, it is shown that one can obtain considerable topological information about the smooth fibers of a given proper polynomial mapping using signature formulae for the mapping degree and Euler characteristic. We also discuss some related problems about fibers of proper polynomial mappings.
Key words: smooth manifold, proper polynomial mapping, bifurcation diagram, isolated singular point, mapping degree, Euler characteristic.
On an Approximate Solution of the Matric Equation with a Matrix Spectrum on Two Segments
Presented by Member of the Academy I. Kiguradze, September 5, 2002
Abstract. The iterative method of finding an approximate solution for the linear matrix equation with a symmetric matrix A of nonfixed sign is suggested. The method does not provide us with the generally accepted transfer to the matrix A2, but allows one to apply to the corresponding iterative scheme the single and k-multiple zeros of specially chosen polynomial which is constructed on two spectral segments of the matrix located on the negative and positive numerical semiaxes. The above-mentioned method makes it possible to attain significant acceleration of iterative convergence to the exact solution.
Key words: modulus-maximum, k-multiple zero, iteration, cycle, polynomial, matrix.
On Uniform Convergence of Fourier Multiple
Presented by Member of the Academy L. Zhizhiashvili, December 10, 2002
ABSTRACT. In the paper Szasz's corresponding results are generalized for multidimensional case.
Key words: trigonometric series.
Several Theorems on dim and zInd Dimensions of Zero-Set Spaces
Presented by Member of the Academy D. Baladze, February 1, 2003
ABSTRACT. The notions of essential, w- and canonical mappings and relative dimension of zero-set spaces are introduced. Characterizations of a dimension dim are given. With their help some new results about dim (e.g. a sum theorem) and new relationships between dim and zInd are established
Key words: dim and zInd dimensions of zero-set spaces.
On the Combinatorial Properties of Remainders of Uniform Spaces
Presented by Corr. Member of the Academy D. Baladze, December 31, 2002
Abstract. In this paper there are given theorems which are generalizations of arbitrary uniform spaces of Yu. M. Smirnov's, M. G. Charalambous and V. Baladze's results characterizing intrinsically dimensional type functions of remainders.
Key words: uniform space, precompact uniformity, extension, remainder, combinatorial property.
On Exact Controllability of One System in the Theory of Elastic
Presented by Corr. Member of the Academy E. Nadaraya, February 4, 2003
ABSTRACT. A problem of exact controllability for system of two-component elastic mixture is considered and proved, that in suitable spaces mentioned dynamical system is exactly controllable.
Key words: elastic mixtures, exact controllability.
THEORY of ELASTICITY
Reduction of One Inverse Problem of the Plane Theory of Elasticity for Anisotropic Body to the Singular Integral Equation
Presented by Corr. Member of the Academy R. Bantsuri, October 1, 2002
Abstract. In the present paper we investigate one inverse problem of the plane theory of elasticity for anisotropic body which contains a hole with unknown boundaries. Coefficient of the volume extension on the hole boundary is required to be constant. Using the theory of functions of a complex variable and the methods of conformal mapping, the problem is reduced to the singular integral equation with displacement regarding the function which maps conformally the given physical domain onto the outer domain of the unit circle.
Key words: elasticity, anisotropy, stress, displacement, medium, equation.
Laser Raman-Spectroscopy of Ternary Mixed Crystals GaAsxP1-x and GaxAl1-xAs Synthesized by Ion Implantation
Presented by Member of the Academy T. Sanadze, November 26, 2002
ABSTRACT. By P and Al ion implantation of GaAs an amorphous GaAsxP1-x.and GaxAl1-xAs..have been synthesized. Due to the high temperature annealing in vacuum the crystal phases of the above-mentioned compounds have been received. Crystallization dynamics has been studied by laser Raman-spectroscopy.
Key words: Laser Raman-spectroscopy, ion implantation, semiconductors.
T. Pagava, Z. Basheleishvili, N. Maisuradze, O. Kharashvili, E. Kutelia
Research of a Local Irradiation for Definition of the Migration Energy of the Vacancies in Silicon Crystals
Presented by Member of the Academy T. Sanadze, September 10, 2002
ABCTRACT. The p-Si samples irradiated with 8 MeV electrons have been studied. Energy of annealing activation for K-centres and complexes (V+B) identified according to the curve of isochrone annealing of those defects are about 0.915 and 1.6 eV, respectively.
Evaluation carried out on the basis of results obtained by measuring of volumetric photovoltage along the irradiated section of the samples testifies that migration energy for positive vacancies makes »0.6eV, while for neutral vacancies the figure is »0.345eV.
Key words: silicon, vacancies, migration energy.
G. Aburjania, Kh. Chargazia
Low-Frequency Planetary-Scale Electromagnetic Waves in
Presented by Member of the Academy J. Lominadze, December 28, 2002
ABSTRACT. New branches of electromagnetic planetary waves having weather forming nature were found in E-region of the ionosphere using analogy method. This method allows to determine spectra of ionospheric electromagnetic perturbations directly from dynamic equations without solving general dispersion equation.
Key words: ionospheric plasma; planetary waves, nonuniform geomagnetic field.
On the Possibility of the Use of Surface Resonance Effect for Definition and Control of Physical Characteristics of Liquid Media
Presented by Member of the Academy T.Sanadze, October 22, 2002
ABSTRACT. The possibility of using surface resonance effect for simultaneous definition and control of the coefficient of surface tension, the velocity of sound propagation, the damping factor of capillary waves and viscosity of different liquids, in quasi-real scale of time is considered. The results of the experiments are given. The ways of raising the accuracy and speed of response of the offered method and also the possible areas of its use are discussed.
Key words: capillary waves, resonance effect, diffraction, surface tension, viscosity.
T. Medoidze, Z. Jaliashvili, Z. Melikishvili, G. Tsintsadze, M.F. Reid
Branching Ratios and Radiative Lifetimes for 3P2, 3P1, 3P0 and 1I6 Manifolds of Tm3+ in YLiF4 Crystal
Presented by Member of the Academy T. Sanadze, November 12, 2002
Abstract. The calculation of energies, wave functions, radiative lifetimes and branching ratios for Tm3+ ion in YLiF4 is considered. Radiative transition rates for electric and magnetic dipole transitions are calculated from the high lying manifolds by using Judd-Ofelt theory. The outcomes have potential applications to ultraviolet lasing in Tm3+:YLiF4 system.
Key words: rare-earth ion, branching ratios, radiative lifetimes.
Diocotron Instability in Gas-Discharge Nonneutral Electron Plasma, when Magnetic Field is not Parallel to the Anode Surface
Presented by Member of the Academy N.Tsintsadze, December 3, 2002
ABSTRACT. The influence of the magnetic field not parallel to the anode surface on the value of the critical electron density, at which diocotron instability is arisen has been investigated theoretically in the gas-discharge nonneutral electron plasma, in the geometry of inverted magnetron. The obtained results are in good agreement with the experimental data.
Key words: nonneutral plasmas, diocotron instability, penning discharge.
R. Metskhvarishvili, Z. Miminoshvili, L. Nekrasova, I. Metskhvarishvili, Z. Mikava,
Investigation of the Internal Conversion Electrons Spectrum of 795.6 and 801.9 keV 134Ba g-transitions
Presented by Corr. Member of the Academy T. Sanadze, December 26, 2001
Abstract. Internal conversion electron spectrum of 795.6 and 801.9 keV 134Ba g-transition has been measured by double focusing sector type magnetic b-spectrometer. Relative and absolute experimental internal conversion coefficients are calculated on the K, L, M, L1, L2, L3, shells and subshells. By using of corresponding theoretical data it was established that 795.6 801.9 keV g-transitions are the mixture of E2 and M3 multipoles. Share of M3 admixture is (3±2)% for 795.6 keV g-transition and for 801.9 keV g-transition ~ 3,4%.
Key words: magnetic b-spectrometer, ICE.
Seismotectonic Deformation of the Caucasus Region
Presented by Corr. Member of the Academy T. Chelidze, December 31, 2002
ABSTRACT. This study is based on the tectonic interpretation of recent earthquakes. The 180 earthquakes fault mechanism has been used. The study of shallow earthquakes reveals local features smoothed by consideration of strong earthquake focal mechanism. This makes possible to delineate seismic sources that are characterized with homogeneously spatial distributed earthquakes and uniform seismotectonic parameters too.
Key words: Caucasus, seismotectonic, fault plane solution.
Dynamics of Atmospheric Motion and Ecological Problems for Samegrelo Region (West Georgia)
Presented by Member of the Academy B. Balavadze, October 8, 2002
Abstract. We have studied ecological situation in Samegrelo region and tendency of its variation. The dynamics of the air masses is theoretically evaluated, complete value of wind velocity is calculated which agrees with the observed value. Characteristic parameters of small height relief have been calculated for the first time and their link with corresponding wave numbers is established. On the basis of statistical processing of ten-year material obtained from the 9 stations of the mentioned region the correlation link between basic meteorological values is calculated which is rather high.
Key words: wind velocity.
Corr. Member of the Academy V. Tsitsishvili, M. Alelishvili, N. Dolaberidze,
M. Nijaradze, N. Mirdzveli
Surfactant-Modified Clinoptilolite and Phillipsite
Presented December 17, 2002
ABSTRACT. New surfactant-modified materials have been prepared on a base of Georgian clinoptilolite and phillipsite with the use of a cetyltrimethylammonium bromide as surfactant. Water adsorption capacity at a vapour pressure corresponding to sorption in micropores as the main characteristic of zeolite's internal surface is measured for samples treated by surfactant solutions with different concentration. Under conditions of surfactant monolayer formation water adsorption capacity increases for clinoptilolite and decreases for phillipsite, but in a case of complete surfactant-modification and bilayer formation the value of water adsorption capacity shows the stability of microporous structure for both samples.
Key words: surfactant-modified zeolites (SMZ), clinoptilolite, phillipsite, ion exchange, water adsorption capacity.
M. Gajiev-Shengelia, D. Gamezardashvili, G. Areshidze
Investigation of Physico-Chemical Properties of Taribani (Georgia) Straight-Run Gasoline by the Method of Gas-Liquid Chromatography
Presented by Member of the Academy T.Andronikashvili, March 25, 2003
Abstract. The straight-run gasoline fraction (boiling range _ IBP-220oC) of Taribani oil (East Georgia) has been studied on modern instrumental level. The main physico-chemical characteristics (group hydrocarbon composition, density, average molecular weight, vapour pressure, researched octane number, etc) are ascertained. The fraction composition of straight-run gasoline (with the accuracy of 1 wt. %) is determined by the method of gas-liquid chromatography.
Key words: straight-run gasoline, gas-liqued chromatography method, hydrocarbons.
Corr. Member of the Academy P. Merabishvili, Sh. Nemsadze
Mathematical Model of Convertor System with Parallel Running Single Phase Autonomous Invertors
Presented November 22, 2002
ABSTRACT. Using Spectrum-Laplace transform method the complete mathematical model of the semiconductor convertor system containing "n" parallel running autonomous current invertors is considered. By the investigation of the model it is shown that it allows to analyze steady-state and transient process and study stability of the convertor system.
Key words: Spectrum-Laplace transform method, convertor system, mathematical model.
Automatic control and computer engineering
Transition of Reversible Microscopic Equations into Macroscopic Irreversible Equations of Stochastic Mechanics (Multidimensional Case)
Presented by Member of the Academy V. Chichinadze, December 24, 2002
Abstract. Soliton approach to the problem of transition of microscopic reversible equations into irreversible macroscopic equations is proposed.
Key words: transition, equation, multidimensional, solution, diffusion.
G. Margvelashvili, I. Natroshvili, T. Dzadzamia
Bioindication of New Compound Forms of Phosphorus Fertilizers for Shiraki Chernozem
Presented by Corr. Member of the Academy T. Urushadze, June 14, 2002
Abstract. The utulization of new compound forms of phosphorus fertilizers in the Shiraki chernozem soils promotes quantitative increasing of main physiological groups of microorganisms and enhances the processes initiated by them. Among the different variants polyphosphorus fertilizers are distinguished by the highest stimulant effect on biological activity of soil.
Key words: soil biology, fertilizer, phosphor, bioindication.
Tent Pole Ultrastructure in the Female Gametophyte of
Ginkgo biloba L.
Abstract. Using electron microscopy method a secretory nature of the tent pole cells is revealed in the female gametophyte of Ginkgo biloba L. These cells are characterized by a well-developed plastid apparatus and smooth endoplasmic reticulum forming reticular sheaths around plastids. Numerous vesicles of reticular origin are accumulated in apical parts of the cells, while fragments of fixed secret are observed outside the cell wall in the archegonial chamber. Based on the secretory activity of described cells it is proposed the possible involvement of the tent pole cells in the formation of liquid area and in attraction of spermatozoids during prefertilization stage.
Key words: Ginkgo, female gametophyte, tent pole, secretory cells, ultrastructure.
N. Melia, L. Gabedava, L. Zhgenti, V. Subeliani
On the Ultrastructural and Biochemical Study of the Stevia Leaf
Presented by Corr. Member of the Academy G. Nakhutsrishvili, February 11, 2003
ABSTRACT. The ultrastructural peculiarities of the mesophyll sells, polyfenols and extracted compounds of stevia leaves according to the season period have been investigated in Tbilisi.
Key words: Stevia rebaudiana, leaf, ultrastructure, polyfenols.
M. Mosulishvili, Z. Manvelidze, N. Memiadze, S. Okropiridze
New Location of Rare Snowdrop Galanthus krasnovii (Amaryllidaceae) in Georgia
Presented by Corr. Member of the Academy G. Nakhutsrishvili, October 8, 2002
ABSTRACT. New location of rare snowdrop - Galanthus krasnovii was found in Ajara, in south-western Georgia. Population of this species near vill. Cholati is the largest among the all known natural populations of G. krasnovii. New location of this poorly known and rarely recorded species is very important for maintenance of biodiversity and species conservation.
Key words: Angiosperms, Amaryllidaceae, Galanthus krasnovii, new location, Ajara, south-west Georgia, biodiversity.
N. Janukashvili, G. Badridze, M. Jgenti, N. Datukishvili
Influence of UV Irradiation on the Content of Ascorbic Acid and Tocopherol in the Leaves of Soybean and Maize
Presented by Member of the Academy N. Nutsubidze, October 8, 2002
ABSTRACT. The effect of additional ultraviolet (UV) irradiation on the content of ascorbic acid, glutathione and tocopherol in leaves of inoculated and uninoculated soybean (Glycine hispida, L. var. adreula), also of white and yellow-seed maize (Zea mays, L.) has been investigated. It was determined that the content of these antioxidants changed diversely in different forms of one and the same species. Inoculation enhanced the adaptivity of plant to the increased UV irradiation that was expressed in antioxidants content increasing. Among the antioxidant systems of plant at least one is activated in changed radiational conditions to protect the plant cell from the excess energy. In preflowering phase the content of antioxidants in both studied species changed more significantly than in flowering phase, that may be explained by adaptation of the plant to the changed radiation.
Key words: UV radiation, ascorbic acid, glutathione, tocopherol, inoculated soybean, maize.
L. Antadze, I. Chichiashvili
Influence of Additional UV-radiation on Peroxidase Isoenzyme Spectra in Red and Green Forms of Castorbean (Ricinus communis L.)
Presented by Member of the Academy N. Nutsubidze, October 22, 2002
ABSTRACT. In the field experiment different doses of UV-radiation (high "A"-2200, "C"-186 PhAR-11600 j·m2; middle "A"-1000, "C"-60, PhAR-9500 j·m2; low "A"-204, "C"-20, PhAR-1900 j·m2) added to sunny daylight caused the changes in peroxidase isoenzyme spectra of leaves of red and green forms of castorbean (Ricinus communis L). Interspecific differences in adaptation to UV-rays treatment appeared in the phases of growth and flowering, but smoothed away in the fruit-bearing phase. In the latter the interspecific diversity in spectra was replaced by special one in variant with the least dose. The supposed reason of the results may be the intraspecific differences in UV-screening, followed by the changes in protecting function of peroxidase via its isoenzyme spectra.
Key words: UV-radiation, peroxidase spectra, castorbean.
N. Keburia, G. Alexidze
Study of Lectin Content and Activity in Mistletoe (Viscum album L.) Fruit at Different Stages of Fruit Development
Presented by Corr. Member of the Academy N. Aleksidze, December 24, 2002
Abstract. The lectin content and activity in the fruits of mistletoe (Viscum album L.) in comparison with other organs of the plant have been studied. It is shown that lectin content in the ripe fruits is less than in the buds and leaves. The fruits and buds are characterized with equally high values of protein specific activity. The highest activity is found in the pulp (67%) and peel (19%) of the fruit. The dynamics of lectin content and activity during the period of fruit development are also investigated. Maximum activity is revealed in mature fruit (in December). The possible physiological role of mistletoe fruit lectins is discussed.
Key words: mistletoe, fruit, lectin, hemagglutination activity.
GENETICS and Selection
To the Study of Productivity of New Hybrids of Local Georgian Forms of Wheat with other Complex Hybrids
Presented by Corr. Member of the Academy G. Nakhutsrishvili, October 8, 2002
ABSTRACT. Some indices of productivity of new hybrids of Georgian wheat varieties (Triticum aestivum L. var. Doli 35-4, and var. Tetri Ipkli) and complex perspective hybrids (Tbilisuri 7, Milkhina, hybrid of Triticale) have been studied. The results of cyclic reciprocal crossing have shown that the first generation was presented by the well developed fertile plants, which revealed heterosisis in some features. It was concluded that affinity of any interesting feature of the hybrid to father's or mother's line must be taken into account in further hybridization, for using the initial form in the role of that parent, to which the interesting feature was more closer.
Key words: hybridization, productivity, wheat.
Genetics and Selection
Restoration of Citrus Meyer in Remote Hybridization
Presented by Corr. Member of the Academy P. Naskidashvili, November 15, 2002
Abstract. On the basis of the study of Citrus Meyer (C. meyer Tan.) it has been established that it does not generate its parent pairs in inbreeding. It can be segregated to initial forms by C. aurantifolia (Christ. Sw.), C. daidai Tan., Citremon (P. trifoliata C. meyer), C. daidais, C. juszu, C. ichangensis and P. trifoliata.
Key words: convergent, recombinant, intermediate, transformed, segregated.
GENETICS AND SELECTION
Corr. Member of the Academy P. Naskidashvili, M. Naskidashvili,
A. Zedginidze, I. Zedginidze
Peculiarities of Wheat Tolerance Resistance
Presented January 24, 2003
ABSTRACT. Investigations have shown that it is impossible to obtain wheat sorts absolutely resistant against diseases and unfavourable conditions of the environment. Hence, the sorts able to give desirable yield if affected by disease should be created. Our researches have proved that to achieve this aim it is advisable to use the ecotypes of Georgian wheat sort "Kartlis Dolis Puri". The use of these ecotypes with high-yielding but receptive sorts makes possible to obtain promising initial material for selection.
Key words: field endurance, tolerance, ecotype, donor.
GENETICS AND SELECTION
Basal Number of Chromosomes in Tea Plant
Presented by Corr. Member of the Academy P. Naskidashvili, December 24, 2002
ABSTRACT. It has been shown that inbreeding causes prolongation of the period of secondary grouping of chromosomes in tea plant and makes the appearance of chromosomal assembly more distinct. Three assemblies are produced in tea plant. Five chromosomes oriented to each other are associated in each assembly. The basal number of chromosomes in tea plant is five and at the present stage of evolution it attains fifteen (n=15).
Key words: tea plant, terminalization, assembly, basis.
Genetics and Selection
I. Kapanadze, R. Goguadze, I. Guledani
Migration Genes of the Ecballium elaterium L. and Restoration of Fertility of Erosive Soils
Presented by Corr Member of the Academy P. Naskidashvili, December 10, 2002
Abstract. On the basis of the study of squirting cucumber (Ecballium elaterium(L.) A. Rich) it has been established that it inhabits in the unfertile soil. As soon as restoration of the soil fertility begins other plants also appear there and in the ninth year the given segment of land is entirely occupied by the plants migrated the squirting cucumber. Then it expands to another unfertile areas and so continuously restores fertility of erosive soils.
Key words: migration, expansion, erosion, restoration.
Genetics and Selection
R. Khukhunaishvili, A. Diasamidze
Identification of Actinidia (Kivi) Sex by Electrophoretic Spectrum of Leaf Proteins
Presented by Corr.Member of the Academy D.Jokhadze, September 13, 2001.
Abstract. We have studied leaf proteins polypeptide spectrum of two species of Actinidia Lindl. They are A.chinensis (Chinese actinidia) and A.kolomikta (Actinidia colomicta) using DS-NA PAAG electrophoresis method at different stages of morphogenesis. Protein genetic markers of sex have been revealed. According to the obtained results proteins formed by expression of specific genes can be used for the identification of actinidia sex.
Key words: actinidia sex identification, electrophoresis.
HUMAN AND ANIMAL PHYSiOLOGY
Antidromic and Orthodromic Responses of the Lateral Amygdaloid Nucleus Cells Following the Ventral Amygdalofugal Tract Stimulation
Presented by Member of the Academy T.Oniani, October 15, 2002
Abstract. The extracellular neuronal activity was recorded from the lateral nucleus (LN) of the amygdala during ventral amygdalofugal tract stimulation. In all cases the characteristics of responses were studied using the tests of stability of latency, high frequency following and collision. Following the stimulation 67 neurons (68.36%) were
activated antidromically and 48 units (48.96%) transsynaptically. These data indicate the heterogenous nature of LN neuronal populations.
Key words: lateral nucleus, ventral amygdalofugal tract, antidromic response, orthodromic response, latency.
HUMAN AND ANIMAL PHYSIOLOGY
Influence of Barium Ions on the Long-Term Potentiation of Dendritic Potentials of the Cerebral Cortex
Presented by Member of the Academy T. Oniani, October 8, 2002
ABSTRACT. In acute experiments in the cats under deep Nembutal anesthesia dendritic potentials elicited by direct stimulation of the cortex, following the brief tetanic stimulation undergo the long-term potentiation, which lasts for several hours. The barium ions promote its manifestation and development.
Key words: dendritic potentials, cortex, long-term potentiation, barium ions.
R. Zamtaradze, N. Mchedlishvili, N. Omiadze, G. Pruidze
Isolation of Phenoloxidase from Green Husk of Walnut
(Juglans regia) and Study of its Properties
Abstract. Phenoloxidase has been isolated from green husk of walnut (Juglans regia). Phenoloxidase exhibits maximal activity at pH 4.9-5.0 and 39ºC. This enzyme energetically catalyzes oxidation of catechol and pyrogallol. Kinetics of the reaction catalyzed by walnut phenoloxidase follows Michaelis-Menten equation. The Km calculated from the double reciprocal plots were found to be 2mM for catechol and 14.0mM for pyrogallol.
Key words: phenoloxidase, green husk, pyrogallol, catechol, kinetics.
N. Kvitsinadze, E. Kapanadze, N. Tsinadze, E. Davitashvili, R. Solomonia,
Corr. Member of the Academy N. Aleksidze
Influence of Galactose-Specific Lectin Isolated from Coriander on the Lipid Peroxidation in the Liver Cells and Erythrocytes
Presented December 31, 2002
ABSTRACT. It is shown on the example of decrease of malonyldealdehyde and 4-
hydroxyalkenal that the galactose specific lectin (CS-Gal) isolated from the coriander (Coriandrum sativum) using affinity chromatography exerts a modulatory effect on Fe2+-induced peroxidation in the human erythrocytes and in the cells of liver tissue.
Key words: lectins, erythrocytes, hepatocytes, lipid peroxidation, coriander, affinity chromatography.
L. Beriashvili, T. Chigvinadze
Formation of Amino Acids, Organic Acids and Sugars During Conversion of Glycine in Plants
Presented by Member of the Academy N. Nutsubidze, October 29, 2002
Abstract. During conversion of glycine in roots and leaves of seedlings of kidney bean (Phaseolus vulgare L.) and maize (Zea mays L.) the amino acids, organic acids and sugars are formed.
Key words: glycine, conversion, kidney bean (Phaseolus vulgare L.), maize (Zea mays L.).
N. Arutiunova, L. Tsakadze
Some Aspects Related to the Regulation of Ca-ATPase Synaptic Membranes
Presented by Member of the Academy T.Oniani, December 7, 2002
Abstract. Effect of some neurotransmitters: 5-hydroxytryptamine (5-HT), noradrenaline (NA), dopamine (DA), endogenous synaptosomal factors (activatory SFa and inhibitory SFi), nonspecific inhibitors of ATPase (NEM, pChMB, vanadate, oligomycine) on Ca-ATPase activity of synaptic membrane has been studied. These substances do not have a reliable effect on enzymes, except of low-molecular synaptosomal factor (SFa) inducing a non-specific inhibition of Ca-ATPase. Probably, the mechanisms underlying the basis of the regulation of ATPase synaptic membrane are not distributed on Ca-ATPase.
Key words: synaptosome, neurotransmitters (NT), and synaptosomal factors.
M. Garuchava, Ch. Kakhniashvili, Ts. Khoshtaria, K. Bezhanishvili
Persistence of Oxiderivatives of Herbicide 2,4-D and Ecological Problems of the Environment
Presented by Member of the Academy G. Kvesitadze, March 3, 2003
ABSTRACT. Persistence of 2,4-D and its metabolites has been studied in terms of ecological safety. It is shown that this is a natural process preventing the nature from alien and toxic compounds. Oxyderivatives have been found to have higher persistence as compared with 2,4-D. Prevalence of biotic factors over abiotic ones in formation of oxyderived metabolites is shown. It is established that as a result of application of 2,4-D and the herbicides derived from it a total number of microorganisms capable of transformation and detoxification increases which stipulate high persistence of oxyderivatives. As a result nontoxic organic compounds are produced.
Key words: pesticides, herbicides, persistence, oxyderivatives, 2,4-D, metabolism.
T. Arabuli, M. Murvanidze
Vertical Distribution of Oribatid Mites (Acari, Oribatida) of Gombori Range (Georgia, Caucasus)
Presented by Corr. Member of the Academy I. Eliava, December 10, 2002
Abstract. The oribatid fauna of Gombori Range was studied. Coefficients of faunistic likeness and dominance identities between the oribatid communities of 10 plots were calculated. The clusters of species- and dominance-identities were built. The highest coefficients were registered between the territorially and ecologically similar biotops. It appeared within the researches, that number of species and their density increases from the top of the range to the lower plots.
Key words: Gombori Range, Acari, Oribatida, faunistic likeness, dominance identities.
L. Tokhadze, Z. Demetrashvili
The Analysis of the Late Results of the Treatment of Ulcerative Diseases in Patients with Genetically Determined Duodenal Ulcer
Presented by Corr.Member of the Academy A.Asatiani, December 27, 2002
Abstract. A total of 122 patients diagnosed with gastric disease of duodenal ulcer were enrolled in the present study. Of them in 71 patients the HLA-B13 marker determining genetic predisposition to the disease was noted. The analysis of the obtained data shows that in patients having immunogenetic marker to duodenal ulcer the clinical course of the pathology is characterized with more aggressiveness and comparatively unsatisfactory results of treatment. Presumably, antigen HLA-B13 conditions the intensity of ulcerogenic process, suppresses the efficiency of both operative and conservative treatment.
Key words: gastric disease, duodenal ulcer, marker, genetic predisposition.
G. Galdava, A. Dzneladze, Sh. Chiokadze
Complex Clinical-Laboratory Assessment of Male Infertility
Presented by Corr. Member of the Academy T. Dekanosidze, November 11, 2002
ABSTRACT. On the basis of clinical material it has been shown that the exact assessment of male fertility requires fulfilment of successive complex clinical-laboratory examinations. Clinical investigations according to the elaborated scheme and an adequate therapy, after the diagnosis is set, are responsible for the decrease of specific share of male infertility in the total structure of infertility. The obtained data confirm that the mixed, especially excretory-immune forms of infertility, caused mainly by the infectious inflammatory pathologies of genital organs are rather frequent. For the complete assessment of autoimmune processes taking place at excretory-immune form of fertility disturbance the investigations of immunity T-system, antispermatic antibodies (ASA), and inflammatory cytokines (IL-8) are necessary.
Key words: ASA, IL-8, infertility.
G. Katsitadze, A. Tedeev
New Approach for Choosing the Access for Catheter Radiofrequency Ablation of Concealed Slow Conductioning Posteroseptal Accessory Pathways
Presented by Member of the Academy N. Kipshidze, January 28, 2003
Abstract. Concealed slow conductioning posteroseptal accessory pathways (CSCPAP) occurs rather rarely. Orthodromic AV tachycardia that involves these pathways in the re-entry circuit is either of incessant or incessantly relapsing character. The work aims to develop a new policy of choosing an access for the catheter radiofrequency ablation (CRA) of the CSCPAP. We examined 14 cases (9 males, 5 females) at the age from 21 to 45 years suffering from incessant form of orthodromic AV tachycardia. All the cases were subjected to invasive electrophysiological investigation followed by CRA of the CSCPAP.
Positive results were obtained in all the cases. After the operation statistically proved (p < 0.01) increase in the miocardium contractivity and dimimishing of the heart chamber volumes were observed in all the cases.
Having analysed the resulting data we concluded, that the difference between the V - A intervals detected in His bundle area and at the pair of electrode poles in the coronary sinus, manifested the earliest retrograde activation of the atria of over 23 milliseconds (p < 0.01), which is indicative of a more leftward location of the concealed slow conductioning posteroseptal accessory pathway. In such cases it is preferrable to use the left-side retrograde access for catheter radiofrequency ablation of accessory pathway.
Thus catheter radiofrequency ablation of concealed slow conductioning posteroseptal accessory pathways is the only radical method of treatment of patients with incessant or
incessantly relapsing forms of orthodromic AV tachycardia.
Key words: catheter radiofrequency ablation, accessory pathways.
I. Ubiria, A. Telia, G. Abuladze
Relation Between Heart Rate Variability and Peak Expiratory Flow in Healthy Schoolchildren
Presented by Member of the Academy T. Oniani, April 15, 2003
Abstract. Clarification of the influence of gender (25 boys and 14 girls, age range, 11 to 15 years) on relation between upper airway tone and sympathovagal balance in resting condition in healthy schoolchildren, heart rate variability (HRV) and peak expiratory flow rate (PEF) was studied. Frequency domain analysis of short-term (15 min.), stationary R-R intervals was performed. Fourier coefficients were separately integrated in 0.003-0.04Hz (VLF), 0.04-0.15Hz (LF) and 0.15-0.5Hz (HF) bounds. All the HRV measurements were well correlated with peakmax. PEF exhibited better correlation with LF/HF in females than in males (r2 = 0.77 vs. 0.27). PEF significantly correlates with the mean RR in males (in opposite direction than in females) and with VLF in contrast to females. By partial correlation analyses it was established that bivariate correlation among PEF and all measurements of HRV, either in males or females, was independent of the basal R-R interval. In females but not in males the relationships among peakmax, Lf, HF and LF/HF were independent of age, height and weight.
Key words: peak expiratory flow rate, heart rate variability, spectral analysis, emotions, gender.
N. Mamamtavrishvili, T. Sanikidze, R. Abashidze
The Changes of Nitric Oxide Content in Blood Plasma and Erythrocytes in Patients with Chronic Heart Failure of Different Genesis
Presented by Member of the Academy V. Bakhutashvili, April 22, 2003
ABSTRACT. The changes of nitric oxide (NO) content have been studied in blood plasma and erythrocytes of patients with chronic heart failure (CHF) developed against a background of different pathologies of cardiovascular system (acute infarction, stenocardia, arterial hypertension). Analysis of obtained results revealed various disorders taking place at heart failure of different genesis, which must be taken into account for the better comprehension of pathogenesis of those diseases and realization of adequate therapy.
Key words: nitric oxide, chronic heart failure, peripheral blood, endothelium, erythrocytes.
B. Mosidze, I. Kachakhidze
The New Method of Forming Gastroenteroanastomosis Using Suturing Device and Compression Apparatus
Presented by Corr. Member of the Academy G.Ioseliani , November 4, 2002.
Abstract. New method of performing gastrointestinal anastomosis (GEA) with application of suturing device and compression apparatus after gastric resection is proposed. Using the apparatus for performing GEA gave problems because of unsuccessful position of the anastomosis which caused some complications. This new way of the anastomosis gives optimal "physiological" position abolishing "blind bag", which is formed while using the traditional suturing devices. Application of this method simplifies performing of the GEA, allows us to shorten the duration of procedure and reduce the number of post-operation complication. By the above method the operation was performed in 72 cases. Long term results of the operations are evaluated to be good. Our new method may be recommended as an optional method for gastric surgery.
Key words: gastric resection, gastroenteroanastomosis.
Kh. Jalabadze, P. Machavariani, D. Kordzaya, T. Areshidze,
E. Datunashvili, M. Tsverava
Presented by Member of the Academy N. Javakhishvili, July 17, 2002
Abstract. The study was aimed at identification of factors contributing to the development of atherosclerosis among refugees in Georgia. The young males were selected and studied (27 parameters) after screening of refugees at the age of 25-45. Based on clinical and morphological manifestation of atherosclerosis or absence of them the group under study was divided into two groups - A and B, respectively. The results of analysis revealed that age, smoking, consuming of excessive hydrocarbons and continuing stress are the factors associated to the development of atherosclerosis in the studied population.
Key words: atherosclerosis, CH-LDL, CH HDL, hypertension, smoking.
N. Chikadze, N. Janikashvili, P J. Dalvas, N. Porakishvili
Immunogenicity and Cross-Reactivity of a Novel Mutant Recombinant hCGb-Protein
Presented by Corr. Member of the Academy G. Tumanishvili, October 15, 2002
Abstract. A vaccine based on human chorionic gonadotropin (hCG) would be safe and effective means for preventing undesirable pregnancy. Due to close structural homology of hCG with lutropin (hLH), hCG is able to bind hLH-receptor as a result of which the corpus luteum continues the synthesis of progesterone and pregnancy is retained. But exactly this structural identity represents the main problem while creating a vaccine based on wild-type hCGb. Antibodies induced in response to native hCG cross-react with hLH which may cause undesirable side-effects. To prevent synthesis of such cross-reactive antibodies a number of mutants of the hCGb-chain have been created. One such mutant hCGb(R68E) containing an Arginine to Glutamic acid replacement at position 68 has been expressed as a recombinant protein in High Five insect cells using baculovirus (BAC) expression system (BAChCG b(R68E)).
We have determined anti-BAChCGb(R68E), anti-BAChCGb (the wild-type hCG expressed in baculovirus), anti-hCGab, and anti-hCGbCTP (carboxil-terminal portion of the hCGb subunit) antibodies titer in rabbits immunized with recominant BAChCGb(R68E), BAChCGb or native hCGab.
The obtained results reveal that the majority of antibodies in the sera of rabbits immunized with BAChCGb(R68E) are directed towards the hCGbCTP and this may explain the fact, that these sera almost lack antibodies capable of binding to hLH. Together with this, the mutant elicited the production of antibodies which avidly recognize native hCGab. The results from this study indicate, that BAChCGb(R68E) mutant molecule might be safe and at the same time effective for a contraceptive vaccine.
Key words: hCG, immunocontraception; cross-reacting.
A. Mtskhvetadze, E. Metreveli
Alterations of Transmembrane Ionic Transport in the Cell under the Influence of a Range of Electromagnetic Fields and Low Doses of Ionizing Radiation
Presented by Corr. Member of the Academy K.Nadareishvili, November 26, 2002
ABSTRACT. Of numerous pressing problems of our planet pollution the electromagnetic fields (EMF) and ionizing radiation are of special interest. However, it became obvious recently that their influence on the living organism is not uniform. The goal of the present work was elucidation of an impact of some of these factors. The live cells served as the test-objects and the respective effects were evaluated by the most sensitive cellular indices the values of transmembrane transport of Na+, K+, Ca2+ ions and the enzymes ATPases regulating this process. The embryonic tissue served as the test-object; the alternating EMF of 20, 45, 60, 80, and 100 Hz and ionizing radiation of 5 and 10 Rad served as the impact-factors.
The results of experiments show that EMF in the range of 45-60 Hz only induces some changes and the radiation of 5 and 10 Rad induced mild stimulatory effect on ionic transport.
Key words: electromagnetic fields, ionizing radiation, ionic transport, embryonic cells.
G. Magradze, M. Kakabadze
Effect of Power-Frequency Electromagnetic Fields on
"Open Field" Activity of Naturally Aggressive and Non-Aggressive Rats
ABSTRACT. The effect of exposure to 50 Hz frequency electromagnetic field (EMF) at 1.5 mT intensity on "Open Field" activity of naturally aggressive and non-aggressive rats was studied. The results of experiments show that naturally aggressive and non-aggressive rats are characterized by different orientation and emotional activity in "Open Field" and exposure to EMF causes different changes in their behavior. Namely, after exposure to EMF non-aggressive rats become less emotional in "Open Field" and thus show the behavior of aggressive animals.
Keywords: rat, electromagnetic field (EMF), "Open Field" activity, aggressiveness.
Market Economy and Ergonomic and Ecological Factors in Agriculture
Presented by Corr. Member of the Academy A. Silagadze, December 31, 2002
Abstract. The work presents the research of tendencies of socio-economic development of Georgia in conditions of transition to market relations and the theoretical and methodological study of real factors for operation of industrial and agricultural potential of the country.
Key words: market economy, agriculture, ergonomic factors, ecological factors.
On the Risk-Factors of Regional Economic Safety in Georgia
Presented by Corr. Member of the Academy L. Chikava, February 11, 2003
ABSTRACT. At any stage of public development the main concern of the state is to ensure the economic safety.
Among internal factors of state economic safety the leading role is given to the sustainable development of regional economy especially to those risk-factors, which are very important for providing the economic safety though are less analyzed in in economic literature. The author analyzes the problem with the account of local politic, socioeconomic, demographic, ecological and other conditions.
Key words: economic safety, regional economy, extended reproduction.
Double Potential of the Development of Market Economy
Presented by Corr. Member of the Academy L. Chikava, December 12, 2002
ABSTRACT. The strategy of person/state interrelations based on the principles of responsibility is discussed. There is a huge potential of development in the market economic system. But this development might happen either in democratic way or vice versa. Market relations are very contadictory if the population is not ready for the market realities. An important thing is the role of socio-economic environment in it. The civilized market economy needs the suitable level of the civil consciousness, which implies deep changes in the system of public values.
Key words: corruption, market.
Problems of Today's Accounting Standardization
Presented by Corr. Member of the Academy A. Silagadze, February 25, 2003
Abstract. The author of this work points out that a number of respectful international organizations are intensively working on accounting standardization issues, whereof he distinguishes International Accounting Standards (IAS) elaborated by International Accounting Standards Committee (IASC) and the ways of its adoption in different countries. The American model of accounting _ GAAP also significantly impacts the capital markets and thrusts its competition against IAS. In willing to achieve comparability of accounting system, the countries of the world have to decide whether to adopt IAS, or GAAP, or develop own national standards.
Georgia also should pursue similar approach, reserving, however, that the perspective challenges in this field might bring to agenda the issue of global recognition of the American GAAP as international standards of accounting.
Key words: data base, international standards, accounting standardization, market globalization, national standards.
To the Perfection of Incomes Legalization in Health Institutions
Presented by Corr. Member of the Academy L. Chikava, May 10, 2003
ABSTRACT. Political and social changes taking place in Georgia and sharp crisis
of economy brought the necessity of fundamental reorientation of the system of medical services. Health care system basically turned to the principles of market economy.
Due to the low specific share of the state in health care expenditures financing, like the countries of Central and Eastern Europe and especially CIS countries, non-official payments take place great part of which is not registered in official reports.
The paper presents recommendations for perfection of incomes legalization in health institutions.
Key words: health care reform, medical insurance, medical service, legalization of incomes.
Peculiarities of Portraying the Characters in "The Wisdom of Lie"
Presented by Corr. Member of the Academy E.Khintibidze, November 12, 2002
Abstract. A well-known Georgian writer, lexicographer and scholar Sulkhan-Saba Orbeliani lived in the 17th century. Besides the collected fables "The Wisdom of Lie" and a memoirs work "A Journey Through Europe", he is the author of the Georgian Dictionary. Sulkhan-Saba Orbeliani applies a peculiar method of portraying the characters. He describes a personage at his very first appearance and does not return to this subject any more. A personage gives an idea about himself mainly through his opinion and world outlook. It is the life contradiction extending to the end of the narration that reveals the spiritual, inner world of the personages, brought to the reader by means of the fables.
Key words: Sulkhan-Saba, "The Wisdom of Lie", personage, portrait.
The Nature of Georgian Romantic Love Lyrics
Presented by Corr. Member of the Academy Z.Alexidze, February 4, 2003
Absract. Georgian love lyrics of the 19th century proceeding from the nature of the lyrics revealed poet's creative individuality best of all. The impossibility to realize national aspirations by Georgian poet-romanticists (A.Chavchavadze, Gr.Orbeliani, N.Baratashvili) in reality conditioned the transformation of their feelings into irreal, illusory romanticised `world of love' in which both the traditions of the Georgian love verse and individual interpretation of the theory of European romanticism are marked.
Key words: romanticism of the world, illusion, universal.
I. Dobordjginidze, M. Iamanidze
V. Nozadze's Work "Deeds and Happenings of the Past"
Presented by Corr. Member of the Academy G. Sharadze, April 30, 2003
Abstract. Historical work dated 1948, by great Georgian writer, scientist - Rustvelologist and the political figure V. Nozadze (1893-1975), who lived in emigration, was devoted to the memory of the fighters for freedom.
V. Nozadze considered that Georgian emigrants had to know the history of the country they had come from. A large work was written by him as there was no book on the history of Georgian nation in the Europe of those days.
Key words:Georgian history, patriotism, independence.