MOAMBE
2000
volume 162 number 1 Jule-August
Mathematics
R. Absava
On some Criteria Based on the Estimate of the Gasser-Müller Regression Curve
Presented by Corr. Member of the Academy H. Inassaridze, July 12, 1999
Abstract. The law of boundary distribution of the integral mean square deviation of a nonparametric estimate of the Gasser-Müller regression function is found. The criterion for checking the hypothesis on the regression curve is constructed.
Key words: distribution, regression, nonparametric regression
A. Patchkoria
Homology and Cohomology Monoids of Presimplicial Semimodules
Presented by Corr. Member of the Academy Kh. Inassaridze, May 24, 1999
Abstract. Homology and cohomology monoids of presimplicial semimodules (in particular, presimplicial abelian monoids) are introduced and some applications of them are indicated.
Key words: semimodule, chain complex, homology monoids
Mathematics
G. Lepsveridze
A Note on the Divergence Order of Rectangular Integral Averages of Summable Functions
Presented by Member of the Academy L.Zhizhiashvili, April 27, 1999
Abstract. Results about divergence order of rectangular integral averages are presented.
Key words: rectangular integral averages, divergence order.
Mathematics
T. Toradze
On the Fourier-Haar Coefficients
Presented by Member of the Academy L. Zhizhiashvili, July 19, 1999
1
ABSTRACT. It is established that among all characteristic functions Ix
of the
intervals [0, x], x
[0,
1], only functions
and
have
the greatest sum of absolute values of Fourier-Haar coefficients.
Key words: Fourier-Haar coefficients, Fourier-Haar series, characteristic functions.
MATHEMATICS
M. Dzadzamia
Equivariant Shape for G-pairs
Presented by Corr. Member of the Academy D.Baladze, July 26, 1999
ABSTRACT. The purpose of this paper is the construction of equivariant shape theory for the category of pairs of spaces endowed with an action of a given compact group G.
Key words: G-space, G-pair, equivariant map, equivariant homotopy, equivariant shape, dense subcategory, extension of functors.
N. Khatiashvili
The Inversion Formula of the Cauchy Integral Taken over a Union of a Countable Number of Segments
Presented by Corr. Member of the Academy R. Bantsuri, July 5, 1999
ABSTRACT. The solution of the singular integral equation, when the line of integration is a union of countable number of non-intersected intervals, is obtained.
Key words: singular integrals, double-periodic functions.
MATHEMATICS
Z. Rusishvili
On Mass Equivalent Redistribution in the W Domain
Presented by Corr. Member of the Academy R.Bantsuri, August 23, 1999
Abstract. The problem of mass redistribution from the domain V Ì IRn, n ³ 3 to the domain V Ì V¢ when a mass distribution density varies in time is considered. A notion of “density varying in time” is introduced and the Poisson’s homogeneous boundary problem is considered.
Key words: mass redistribution, external field potential equivalent distribution, density varying in time.
Mathematics
I. Tsereteli
Some examples in dimension theory
Presented by Corr. Member of the Academy N. Berikashvili, June, 7, 1999
Abstract. 1. For any integer k ³ 0 a completely regular Hausdorff nonnormal space Xk is constructed, which has the following property: there exist a dense in Xk subset Yk, a closed subset Fk of Xk and an open in Xk neighbourhood OFk of Fk such that IndYk=k and for any open in Xk set G with FkÌGÌOFk the equality Ind ((FrXkG)ÇYk=k holds.
2. A completely regular Hausdorff nonnormal space X, such that X=X1ÈX2, where IndX1=IndX2=0 (besides, X2 is discrete in the induced from X topology), X1 is dense in X and IndX³ 2, is constructed.
3. A closed subset F of the Tychonoff cube X=[0,l]c, its open (in X) neighbourhood U* and, for any integer n³0, a subspace Yn of X are constructed such that the following properties are satisfied: a) Yn is not dense in X, b) Yn is the direct sum of c-copies of the usual (closed) Euclidean n-cubes (and, hence, IndYn=n); c) for any open subset U of X with FÌUÌU* we have: Ind((FrXU)ÇYn=n.
Key words: completely, regular, Tychonoff, normal, space, dimension.
Mathematics
D. Makharadze
Some Approximate Properties of the Cezaro means of
Trigonometric Fourier series and their conjugate
Presented by Member of the Academy L. Zhizhiashvili, May 2, 1999
Abstract. Some approximation properties of trigonometric Fourier series of function f and its conjugate are studied.
Key words: trigonometric series, Cezaro means.
Mathematics
Z. Kharebava
On the Multiplicative Structure in the bar-construction of
homology of DG-Algebra with Measured noncommutativity
Presented by Corr. Member of the Academy N. Berikashvili, June 7, 1999
Abstract. In this note certain twisting cochain, which introduces a perturbed product in the bar-construction of cohomology of space X, is constructed. This product, together with the perturbed differential, turns the bar-construction into (nonassociative) DG-Hopf algebra, which describes the multiplicative structure of the cohomology of loop spaces WX.
Key words: A¥-structure, bar-construction, perturbation
Mathematics
G. Khimshiashvili, E. Wegert
Analytic discs and totally real surfaces
Presented by Corr. Member of the Academy N.Berikashvili, May 24,1999
Abstract. We deal with analytic discs attached to (with boundaries in) totally real two-dimensional surfaces. Firstly, we prove that certain non-compact smooth totally real surfaces are globally foliated by boundaries of analytic discs. Secondly, we describe a topological approach to existence results for analytic discs attached to small generic perturbations of a given singular two-surface germ. Two local topological invariants are introduced which describe the complex geometry of a singular germ. In terms of these invariants, we present a simple sufficient condition of existence of analytic discs near an isolated totally real singularity.
Key words: analytic disc, totally real surface, isolated singularity, generic perturbation, linking number, elliptic point.
mechanics
Sh. Khutsishvili
Prospects of Propellered Aviation Development
Presented by Member of the Academy T. Loladze, 21 June, 1999
Abstract. The work is devoted to the increase of competitiveness of aircrafts with vertical take-off and landing up to the level of modern planes with application of variable geometry propeller.
Key words: non aerodrome aviation: aircrafts nonspecially needing runways aircrafts, specially prepared runways.
CYBERNETICS
Member of the Academy M. Salukvadze, A. Topchishvili, V. Maisuradze
Some Properties of Extreme Points in Partially Ordered Spaces
Presented August 2, 1999
Abstract. Different topological properties of extreme points in partially ordered spaces are investigated.
Key words: extreme point, partially ordered , space
Cybernetics
A. Kvitashvili, I. Javakhishvili, G. Chogovadze, M. Kandelaki, N.Geldiashvili
B-Viral Hepatitis After-Effect Prognosis by Stochastic
Approximation
Presented by Member of the Academy V. Chavchanidze, March 19, 1999
Abstract. Proposed prognosis method is based on nonparametric statistical approach for restoring function in Bayesian sense
Key words: stochastic approximation, discriminant function, B-virus, antibody, antigen.
Physics
Member of the Academy N.Amaglobeli, M.Namtalishvili, D.Mjavia, A.Mikaberidze, P.Magalashvili, B.Jorjoliani
Growth of YAlO3:Ce3+ Single Crystals by Vertically
Crystallization Method for the Detectors of Nuclear Radiation
Presented July 19, 1999
Abstract. The present paper is devoted to single-crystal scintillator (YAlO3:Ce3+) intended for
applications in the detectors of nuclear radiation. The single crystals of yttrium aluminium perovskite
activated by trivalent cerium ions have been grown by the Bridjman-Stockbarger
method from the melt through the vertical crystallization in a reducing
atmosphere of Ar and H2. Effective method to change growth conditions is
examined.
Key word: scintillator, crystal growth, yttrium aluminium perovskite.
Physics
Member of the Academy G.Tsintsadze, Z.Bashaleishvili, T.Pagava, T.Bjalava, M.Stamateli
Recombination Properties of Radiation Defects in Electron
Irradiated p-type Silicon Crystals
Presented March 15, 1999
Abstract. Lifetime of the main carriers (t) and variation of specific resistivity (r) in p-type silicon crystals irradiated with 8MeV energy electrons have been studied.
Curves of isochrone annealing of the lifetime and specific resistivity have been compared. Conclusion was made that in 200-3000C temperature range variation of t results from the existence of K-centres and divacancies, whereas in 400-5000C interval it is conditioned by multivacancy V3+O2 and V3+O3 complexes. “Vacancy+boron atom”, V3+O and V2+O2 complexes are not recombinatively active.
Key words: p-type silicon, electron irradiation, radiation defects, recombination properties, isochrone annealing.
Physics
G. Kantaria
Quasidiscrete Analysis in Relativistic Physics
Presented by Corr. Member of the Academy A.Khelashvili, May 9, 2000
Abstract. The article is a fragment of the mathematical formalism constructed on the media field . The formalism is directed to application especially in Relativistic Quantum Field Theory. The conception of pseudocomplex number with hyperbolic norm is introduced. As an example there was examined Dirac equation with the mass operator The is a matrix constructed on the media field element Á = 1 + . In this formalism the Dirac and Klein-Gordon equations in the gauge fields take more compact form and contain some mass correlations.
Key words: media field, pseudocomplex number, relativistic physics, quasidiscrete analysis.
Physics
I. Khijakadze
Overreflection of Magnetosonic Waves from Moving Plasma with Horizontal Magnetic Field
Presented by Member of the Academy N. Amaglobeli, October 19, 1999
Abstract. The phenomenon of magneto-acoustic overreflection is considered. Analytical expressions for coefficients of reflection and refraction have been obtained. The boundaries for normal complete inner reflection and refraction regimes are established.
Key words: overreflection, negative energy waves.
Geophysics
D. Gordeziani, T. Davitashvili, Z. Khvedelidze
On One Mathematical Model of the Georgian Transport Corridor pollution
Presented by Member of the Academy B. Balavadze, April 19, 1999
Abstract. A regional zonally averaged mathematical model of the Georgian transport corridor pollution is discussed. In this mathematical model the influence of orography is taken into account. Our mathematical model is based on the solution of primitive equations under nonlocal boundary conditions.
Key words: Georgian transport corridor, pollution, nonlocal boundary condition, orography.
Geophysics
J.Kharchilava, K.Tavartkiladze
The Peculiarities of the Vertical distribution of ozone in Georgia
Presented by Corr. Member of the Academy T. Chelidze, May 3, 1999
Abstract. The vertical distribution structure of ozone in the atmosphere has been studied using the data of 147 sounds in Ruispiri and Abastumani. The spatial variations of ozone and the influence of the Sun duration on its vertical distribution are considered. An analytical expression has been derived, which describes the regularity of the vertical ozone distribution in Georgia.
Key words: atmosphere, ozone.
General and Inorganic Chemistry
Corr. Member of the Academy A. Shvelashvili, A. Kozmanishvili, M. Tskitishvili,
N. Zhorzholiani, M. Kvitsiani, I. Beshkenadze, N. Ochigava, K. Amirkhanashvili
Some Coordination Compounds of Mg(II), Mn (II), Fe(II) and Fe(III) with the Bioligands
Presented June 14, 1999
Abstract. Homogenous and various ligand complex compounds of Fe(II and III), Mg and Mn containing sulfanilamides and aminoacids are synthesized. Chemical and physical properties of these complexes were studied. The complex formation of the above-mentioned compounds in the solution were studied by potentiometric methods and their constants of stability were calculated. Proceeding from the experimental data the structure of the synthesized compounds is suggested. Some of our synthesized compounds have been examined as the antiviral preparations as well as the components of the new generation premixes.
Key words: coordination compounds, complexing, sulfanilamide, amino acid, stability constants.
Analytical Chemistry
K. Amirkhanashvili, M. Dzagania, N. Nadiradze, N. Burkiashvili, M. Zautashvili
Comparison of Chromatographic Properties of the Standard OV-1 and Liquid Crystal Stationary Phases
presented by Member of the Academy T. Andronikashvili, April 19, 1999
Abstract. Capillary chromatography has been used to study chromatographic separation of the aromatic hydrocarbons’ model mixture on the nonpolar stationary phases OV-1 and liquid crystal para [(4' hexabenzenoxy)-(4''-4''' benzen nitribenzenoxy)]-phenylen. Carrier gases He and CO2 were used for separation on OV-1 and nitrogen (N2) for the liquid crystal. Calculation of the retention time (tr), coefficient of asymmetry (Kas) and the number of theoretical plates (N) for the compounds under investigation show, that in capillary chromatography the use of CO2 as carrier gas caused decreasing of the elution time of the components and duration of the analysis but increases the column efficiency. It is shown that liquid crystal [BOBNBO]-p better works in the smectic mesomorphic phase, being selective towards the mixture of xylene and cresol isomers: it is not less selective compared with the universal phase OV-1 and can be used for separation of isomers of aromatic hydrocarbons.
Key words: liquid crystal, capillary chromatography, xylene, cresol, toluene, ethylbenzene.
Physical Chemistry
S.Urotadze, Member of the Academy N.Skhirtladze, Member of the Academy T.Andronikashvili, T.Kvernadze, N.Osipova
Establishment of Experimental Series of Selectivity for Laumontite Relative to Cations of Alkali Metals and Ammonium
Presented December 28, 1999
Abstract. We have studied ion-exchange properties of laumontites of Georgia both of natural and hydrogen forms. Experimental series of selectivity with respect to cations of alkali metals and ammonium was made up. It is shown that laumontite reveals the most retarded ability to the heaviest metals. The influence of temperature factor on the character of selectivity of hydrogen form of laumontite has been studied.
Key words: zeolites, laumontite.
Electrochemistry
R. Kvaratskhelia, E. Kvaratskhelia
Voltammetry of Maleic Acid at Solid Electrodes
Presented by Corr. Member of the Academy J. Japaridze, May 10, 1999
Abstract. Voltammetry of maleic acid at the electrodes from Cu, Pt, Ta, Cd, Cu-Hg and alloys of Cd with Sn, Pb, Cu, In, Hg, Ni, Ag in aqueous solutions has been studied. The main kinetic parameters of the maleic acid reduction process (E1/2, Ep, an, rate constants ks and ko) have been determined. The influence of the solution composition and electrode nature have been discussed.
Key words: maleic acid, voltammetry, electrode, wave, reduction, kinetic parameters
Electrochemistry
G. Agladze, G. Gordadze, V. Kveselava, L. Gotiashvili
Influence of the parameters of the electrolyzer with packed bed electrodes on total current
Presented by Corr. Member of the Academy J. Japaridze, May 31, 1999
Abstract. The dependence of the total current on the piece average diameter, packed bed height, electrolyte volume rate and anode feeder potential are studied in the electrolyzer with packed bed electrodes.
key words: electrolyzer, packed bed electrodes, total current, potassium permanganate.
Electrochemistry
T. Marsagishvili, Corr. Member of the Academy J.Japaridze, V.Chagelishvili,
M. Machavariani, M. Khokhashvili, M.Chankashvili, M. Janjalashvili
Investigation of the Adsorption-desorption Processes by Radiospectroscopic Method
Presented April 27, 1999
Abstract. The new radiospectroscopic method for studying of the adsorption-desorption processes in electrochemical systems is worked out. Experimental investigation of the desorption process of some aliphatic alcohols on mercury electrode is carried out. Received experimental results confirm suggested working mechanism of the quantum electrochemical generator.
Key words: adsorption, electrochemical system, second harmonic signal.
CHEMICAL TECHNOLOGY
N. Gogishvili, N. Demuria, G. Agladze, R. Akhvlediani, D. Ekvtimishvili
The Influence of Suspension-forming Particles Size on Manganese Dioxide Electrosynthesis
Presented by Corr. Member of the Academy L. Japaridze, July 19, 1999
Abstract. The influence of particles size of fine-suspended MnO2, graphite and pyrex glass on product quality, current efficiency, anodic potential value of titanium electrode and bath voltage have been studied in the process of manganese dioxide electrosynthesis from the acidified solution of manganese sulphate. It is shown, that the decrease of particles size from 630 mm to 50 mm positively affects the EMD obtaining process. The current efficiency, i.e g-MnO2 content in synthesized product increases; anodic potential and bath voltage maintain stable values.
In conditions of long-term electrolysis in 0.01 g/l graphite and 0.005 g/l soot-containing suspension titanium electrode maintains stable active state. The 92-93% g-MnO2 with high current efficiency is obtained on the electrode. Carbon content in product doesn,t exceed 0.12%.
Key words: electrolytic manganese dioxide (EMD), suspension, particle, anodic potential, current efficiency, graphite, pyrex glass, soot.
Physical Geography
K. Rakviashvili
Tectonic Thrust - one of the Factors of Speleogenesis
Presented by Corr. Member of the Academy Z. Tatashidze, May 24, 1999
Abstract. In Okriba (West Georgia) karst caves were formed in limestone suites of the powerful thrust.In the Tskhaltsitela surface-canyon there are small horizontal caves; river Shabatagele formed a through multistoried 200 m long Tsutskhvati cave complex and the river Tkibula formed a stepped precipice, 300 m deep and 3 km long.
Key words: karst, cave, tectonics and thrust.
Hydrology
Ts. Basilashvili
The Method of Working-out Hydrological Prognosis in
Conditions of limited Information
Presented by Member of the Academy G.Svanidze, April 27, 1999
Abstract. Applying different mathematical criteria and multistep sifting methods an optimal system of predictors has been investigated. Water discharge forecasts for flood daily, monthly, quarterly and vegetation periods have been established for 12 rivers.
Key words: hydrological prognosis, multifactor statistical model.
Hydrogeology
B. Zautashvili, Kh. Avaliani
The character of the phasic zonality of the subterranean
hydrosphere in the Caucasus
Presented by Corr. Member of the Academy I. Buachidze, April 19, 1999
Abstract. On the basis of appreciation of the abyssal geological and geophysical conditions of the Caucasus the following view is advanced. The border between the zones of saturation and overcritical waters must be drawn at the 19.5-23 km depth in Anaklia-Zestaphoni profile and through the 20-8 km in the Anaklia-Ialbuzi profile. As for the lower border or the zone of distribution of the overcritical waters it must be cut into the upper mantle.
Key words: hydrosphere, hydrophysical, overcritical, zonality.
petrology
A.Okrostsvaridze, I.Mgaloblishvili, D.Bluashvili
Plagiogranites of Szgimazuki Massif and Ore Manifestation Related to it
Presented by Corr. Member of the Academy G. Zaridze, April 27, 1999
Abstract. Szgimazuki massif plagiogranites of the Southern slope of the Caucasus are studied. It is assumed, that they represent I-type formations, which were formed as a result of collision continental crust selective melting. Contact mineralization of the mentioned massif discovered by the authors is described.
Key words: plagiogranites, gabbro, diorites, eutectic.
Member of the Academy
T.Loladze, D.Shengelia, A.Okrostsvaridze, N.Loladze
The Prospects of using the Magmatic and Metamorphic Rocks of Georgia as Facing Material
Presented November 15, 1998
Abstract. magmatic and metamorphic rocks, most of which being good trim stone material, are spread within the considerable part of the territory of Georgia. There are all technical potentialities to develop rock sawing and polishing machines at the Georgian Technical University. These factors have great prospects for development of stone industry in Georgia.
Key words: facing material, diamond tools, progressive technology.
Metallurgy
S. Mebonia
Determination of the deformation Zone Parameters for Tube rolling on the Drawn Back Mandrel
Presented by Member of the Academy R. Adamia, 31 May, 1999
Abstract. The method of determination of the deformation zone parameters for tube rolling on the drawn back mandrel is considered.
Key words: deformation zone, tube rolling, mandrel.
Botany
G. Chincharauli
The Fodder Crops Root Productivity on the Northern Slopes of the Saguramo-Yalno Ridge, according to the Farming-Botanical Fractions
Presented by the Corr. Member of Academy I. Eliava, December 30, 1999
Abstract. The paper deals with the mass volume of those fodder crops, which are distributed in the northern slopes of the beech forests, where the secondary post-forest valleys are developed.
Key words: cereals, leguminous plants, sedge, vary-grasses, moss, lichen, residues.
Human And Animal Physiology
E.Vekua
Comparative Aspects of Self-Regulation of the Higher Nervous Activity in Some Higher Vertebrates (Dogs, Cats, Rats) during Informational Neuroses
Presented by Corr. Member of the Academy V. Mosidze, February 2, 1999
Abstract. By means of the alimentary-locomotion conditioned reflexes and delayed responses the higher nervous activity of dogs, cats, and albino rats was investigated in a course of development of informational neuroses. It was found that formation of the steady pathological reaction is preceded by the self-regulatory activity of the brain, which is aimed at enhancement of the central nervous system’s resistance of CNS against the pathogenic agent. In the animals of various stages of phylogenetic development, in a case of the similar influences on the brain, various forms of the self-regulation are dominating.
Key words: experimental informational neuroses, dog, cat, rat, self-regulation of the higher nervous activity, comparative aspects.
Human and Animal Physiology
E.Moniava, M.Butskhrikidze, Z.Khanaeva, M.Gogoberidze, N.Zambakhidze
Effect of vasopressin on the emotional state of animal
Presented by Corr. Member of the Academy V.Mosidze, April 27, 1999
Abstract. Vasopressin effect on the emotional state of animal was studied under conditions of open field. Experiments carried out enable us to suggest that lysin-vasopressin influences on the emotional state of animal, in particular, it enhances the emotional tension of the animal.
Key words: vasopressin, behavior, open field, emotional state.
BIOPHYSICs
B. Tevdoradze, G. Grebenchuk, G. Ormotsadze
Criteria of the Usage of one Electrode Method of Measuring of Cell Membrane Impedance
Presented by Member of the Academy K. Nadareishvili, May 17, 1999
Abstract. Differential equation, which describes the tension dynamics in the period of trapezium current impulse flow in the microelectrode-cell system, is received and solved on the basis of microelectrode-cell system equivalent scheme. On the basis of the received results the operation principle of the cell impedance one electrode method is proposed, which automatically compensates tension fall on the electrode and produces useful signal.
Key words: microelectrode-cell system, differential equation.
Biophysics
M. Dolidze, N. Gognadze, member of the academy M. Zaalishvili
Morphology of Transcriptional Complexes of Archaebacterium
Sulfolobus acidocaldarius
Presented May 15, 1999
Abstract. The structural organization of active chromatin of acidophil archaebacterium Sulfolobus acidocaldarius has been visualized for the first time. The given electron microscopic data witness the presence of unique particularities in morphology of transcriptional complexes of nonribosomal genes of archaebacteria - unusually close location of numerous transcriptional structures with short side polysomes.
Key words: archaebacterium, transcription, electron microscopy.E.Kiskeidze, G.Khatisashvili, M.Kurashvili, G.Shavgulidze
Action of Lipid Peroxidation on Monooxygenase System
Participating in Xenobiotic Detoxification
Presented by Corr. member of the Academy M. Gordeziani, December 7, 1999
Abstract. The influence of lipid peroxidation on plant monooxygenase system has been studied. It has been shown that lipid enzymatic peroxidation inhibitors decrease dimethylaniline N-demethylation and stimulators enhance xenobiotic monooxygenation. Under the action of radical particles formed at nonenzymatic peroxidation cytochrome P450 looses N-demethylase activity which could be partially restored by addition of lecithine. It was stated that initiated by Fe2+ ions inactivation of cytochrome P450 causes transformation of hemoprotein into peroxidase.
Key words: monooxygenase, cytochrome p450, inactivation of cytochrome p450, lipid peroxidation, xenobiotics.
Biochemistry
R.Kupatadze, K.Kuridze, S.Simonishvili, M.Makharadze, E.Tabuashvili, L.Rusia, N.Svanidze, M.Simonidze, member of the academy M.Zaalishvili
Investigation of the Myosin Rod in various conditions
Presented April 19, 1999
Abstract. Using the calorimetric studies of thermal denaturation at pH change (6.2, 7.2, 8.2, 9.2) and the limited hydrolysis method at various physical influences (pH 6.2, 7.2, 8.2 and temperature changes: 100C, 370C) of the identification of regions in the polypeptide chain of myosin rod. We have established that at pH and temperature dependences the conformational changes in the myosin rod are observed.
Key words: myosin rod, muscle contraction.
Biochemistry
V. Chubinidze, T. Beriashvili, N. Kekelidze, D. Chubinidze
Volatile Oil and Monoterpene Hydrocarbons of Different Organs of Picea orientalis L.
Presented by Corr. Member of the Academy D. Jokhadze, March 22, 1999
Abstract. Quantitative content of volatile oil of different organs and parts of Picea orientalis L. has been investigated. Physico-chemical characteristics of volatile oil and monoterpene hydrocarbons content have been established.
Key words: Picea orientalis L., volatile oil, monoterpene hydrocarbons.
Biochemistry
I.Gabriadze, T.Tsitskishvili, K.Kutalia, V.Philauri, N.Surguladze, G.Zaalishvili,
Corr. Member of the Academy T.Zaalishvili
role of ADP-ribosylation in the structural organization of liver and brain cell chromatin of intact and X-irradiated rats
Presented February 8, 1999
Abstract. Posttranslational modification of proteins by ADP-ribosylation has been shown to cause structural modulation of chromatin of rat liver and brain cells. Both intact and X-irradiated animals revealed structural changes of the chromatin of liver and brain cells. The data obtained suggest that ADP-ribosylation takes part in DNA excision repair via a structural modulation of the chromatin.
Key words: liver, brain, nuclei, ADP-ribosylation, NAD, micrococcal nuclease.
Microbiology And Virology
M. Jgenti, N. Ramishvili, N. Janukashvili
Effect of Nitrogen Doses and Inoculation on Vitamin Content in Soybean
Presented by Corr. Member of the Academy N. Nutsubidze, May
31, 1999
Abstract.
Influence
of inorganic nitrogen and inoculation separately and together on content of
thiamine and riboflavin in soybean (leaf, root, seed) has been studied. For
inoculation strains 634b, 91 and 18 were used. Inorganic nitrogen was added in
the form of NH4NO3 in following
doses: 30 kg/ha, 60 kg/ha and 120 kg/ha. Strain 91 was the most favourable for
plant, causing the increase of both vitamins content. While using nitrogen
fertilizer it was revealed, that doses 30 kg/ha and 60 kg/ha were more suitable
for the plant, as they increased vitamin content. While using both, fertilizer
and inoculation, the best results were obtained in “nitragin + 30 kg/ha” and
“nitragin + 60 kg/ha” variants.
Key words: inoculation, inorganic nitrogen, thiamine, riboflavin, soybean.
Zoology
A. Gegechkori, I. Matcharashvili
Species of Tropical/Subtropical Genera of Psyllids (Homoptera, Psylloidea) in Georgia: chorological and ecological review
Presented by Corr. Member of the Academy B. Kurashvili, April 27, 1999
Abstract. A chorological and ecological analysis of 3 tropical-subtropical genera of psyllids (Calophya Löw, Homotoma Guerin-Menneville, Trichochermes Kirkaldy) is presented. These genera are mainly distributed in humid and subhumid biotopes of tropics and subtropics. However, several species are also found in temperate zone having adapted to the ecological conditions of local biomes. Three species from the above genera (Calophya rhois (Löw), Homotoma ficus (L.), Trichochermes walkeri (Frst.)) occur in Georgia showing remarkably high ecological flexibility.
Key words:
Psylloidea, Homoptera, ecology,
chorology, zoogeographical regions.
Abstract. The influence of intraperitoneal administration of isolated hepatocytes, liver extract and homogenate on the stimulation of regenerative processes of resected liver was studied. It was stated, that their action reduces the number of degenerative and necrotic cells, compensates the function of the damaged liver, hastens the normalization processes of the structure of liver and its histochemical changes.
Key words: resected liver, histochemistry,hepatocytes,homogeneous.
Ecology
G. Magradze
Effect of Single Whole-Body Exposure to Power-Frequency Electromagnetic Field on Elaboration and Storage of Passive Avoidance Reaction in Naturally Aggressive Animals
Presented by Member of the Academy K. Nadareishvili, May 24, 1999
Abstract. The action of single whole-body exposure to 50 Hz frequency electromagnetic field (EMF) of 1.5 and 3.6 mT inductances on elaboration and storage of passive avoidance reaction in naturally aggressive rats and modification of their aggressive behavior were studied. The decrease in remembering of avoidance reaction on the one hand and decrement of emotionality, on the other hand, were indicated. As for aggressive behavior of experimental rats, it was not significantly changed.
Key words: rat, electromagnetic field (EMF), aggressive behavior, passive avoidance reaction.