MOAMBE

1999

volume 160 number 3 November-December

 

N.N.Bogolyubov and Modern Particle Physics

Member of the Russian Academy of Sciences V.Matveev,
Member of the
Georgian Academy of Sciences A.Tavkhelidze

Presented is the introductory talk delivered at the Bogolyubov Conference "Problems of Theoretical and Mathematical Physics" dedicated to the 90th anniversary of Academician N.N.Bogolyubov. The conference was held under the auspices of UNESCO in Tbilisi, in October 24, 1999.

S. Topuria

The Generalized Laplace Operator on a Sphere and Summation of Differentiated Fourier-Laplace Series Using the Abel's Method

Presented by Member of the Academy L. Zhizhiashvili, September 12, 1998

Abstract. The notion of a generalized Laplace operator of arbitrary order on a unit sphere is introduced and theorems on the summation of differentiated Fourier-Laplace series using the Abel's method are proved. A differentiation operator is taken to be the Laplace operator on a unit sphere, i.e., an angular portion of the Laplace operator written in terms of the spherical coordinates.

Key words: Fourier-Laplace series, summation, generalized Laplace operator.

T. Kopaliani

On the Basis Problems in the Spaces WkGHw with Respect to Wavelet System

Presented by Member of the Academy L. Zhizhiashvili, October 12, 1998

Abstract. In this paper we study the basis problem with respect to compact support wavelet in the spaces WkGHw, where G is maximal rearrangement invariant function space on [0,1], and w is modulus of continuity.

Key words: wavelet, unconditional basis, Sobolev spaces.

T.Toradze

On the Fourier-Haar Coefficients of Composite Function

Presented by Member of the Academy L. Zhizhiashvili, November 9, 1998

Abstract. It is established that among all the homeomorphic changes of variable only the functions j satisfying the condition j-1Lip1 preserve convergence of the series of pth powers of absolute values of Fourier-Haar coefficients, for p(0,1).

Key words: Fourier-Haar series, Fourier-Haar coefficients.

D.Makharadze

Some Local Approximation Properties of Cezro Means
of Trigonometric Fourier Series

Presented by Member of the Academy L.Zhizhiashvili, March 22, 1999

Abstract. We studied some approximation properties of Cezro means of trigonometric Fourier series.

Key words: trigonometric series, Cezro means.

G.Lepsveridze

On Order of Growth of Rectangular Integral Means of
Summable Functions from L(Rn)(n
2)

Presented by Member of the Academy L.Zhizhiashvili, April 27, 1999

Abstract. Let f L(Rn) be any function. For every x Rn we consider means

, where I = (a1,b1)...(an,bn) are n-dimensional intervals in Rn. We present some estimates of the growth of those means as diam(I) 0 and . The estimates are close to be exact.

Key words: order of growth, rectangular integral.

U. Goginava

Cesaro Summability of d-Dimensional Walsh-Fourier Series

Presented by Member of the Academy L.Zhizhiashvili, September 21, 1998

Abstract. In this paper we prove that for the d-dimensional Walsh-Fourier series the maximal operators of the Cesaro (C, a) means of a martingale are bounded from Hp,q([0,1]d) to Lp,q([0,1]d), (0 < q , p > max{1/2,1/(1 + min(a1,..., ad))}) and is of weak type (1,1), where the supremum in the maximal operator is taken over a positive cone. Morever, the Cesaro (C, a) (ai > 0, i = 1,..., d) means of a function f L([0,1]d) convergence a.e. to f as mi , i = 1,2,..., d, (l > 0, i, j = 1,2,..., d).

Key words: martingale Hardy spaces, Walsh functions, Cesaro summability.

Z.Rusishvili

Equivalence in the Inverse Problem of the Potential Theory

Presented by Corr. Member of the Academy R.Bantsuri, June 29, 1998

Abstract. The problem of mass "sweeping" from the domain VRn, n3, to the domain VV' is considered. The construction of such "sweeping" is built. Also, the properties of Poinquarre type operator are studied.

Key words: the problem of "sweeping", Poinquarre type operator.

T.Akhobadze

On the Order of Fourier Coefficients of a Function of Generalized Wiener's Class BV(P(n))

Presented by Member of the Academy L.Zhizhiashvili, October 14, 1998

Abstract. In this paper for the Fourier coefficients of the generalized Wiener's class BV(P(n)) the precise order , where k(n) is an integer for which is established. Besides, the problem concerning the number of Fourier coefficients having exactly the order , is studied.

Key words: Fourier coefficients, generalized Wiener's class BV(P(n)), Wiener's Vp class.

E. Kapanadze

Almost Everywhere Convergence of Wavelet Summation
Methods

Presented by Member of the Academy L. Zhizhiashvili, November 15, 1998

Abstract. We show that if y is a wavelet under integral condition than for
Lp(R), 1 < p < function the wavelet projection, hard sampling and soft sampling operators converges pointwise almost everywhere to .

Key words: multiresolution, wavelet, wavelet projection, hard sampling, soft sampling operators.

G.Kapanadze

Conformal Mapping of Doubly-Connected Domain Bounded by Broken Line on Circular Ring

Presented by Corr.Member of the Academy R.Bantsuri, August 23, 1999

Abstract. Conformally mapped function is constructed on the circular ring restricted by doubly-connected domain of convex polygons.

Key words: mapping, doubly-connected function, convex polygon.

J. Avaliani, I. Kordzakhia

The Interferometer for Controlling of Aspherical Surfaces Using the Crystals with Linear Electro-Optical Effect

Presented by Corr. Member of the Academy L. Japaridze, July 27, 1998

Abstract. The method of uncontacted control of lenses with aspherical surfaces is considered. This method is based on compensation of phase differences of two beams, passing through lens on various height, using crystals with linear electro-optical effect, by which restoration of the interferential image on the screen placed in focal flat of lens occurs.

Key words: lens, aspherical profile, interferometer, crystals with linear electro-optical effect.

O.M.Kerimov

The Effect of Nonperpendicularity of End to Collar Axis on Rectilinearity of Well-drilling Pump Cylinder

Presented by Member of the Academy R. Adamia, June 28, 1999

Abstract. In present paper we have studied the action of nonperpendicularity of the end to collar axis on rectilinearity of well-drilling pump cylinder while assembling them. Analytical expression for determination of deflection of the axis of cylinder depending on intensity of end beats is obtained.

Key words: well-drilling pump, collar axis.

A.Gerasimov, A.Bibilashvili, Z.Bokhochadze, R.Kazarov, G.Chiradze, Z.Samadashvili

Role of Anticonnecting Quasiparticles in Mechanism of
Migration Act

Presented by Corr. Member of the Academy T. Sanadze, July 25, 1998

Abstract. We studied sufficient electrical activity of Al impurity atoms penetrating into Si as a result of photostimulated diffusion on the light intensity. Its shown that dependence has superlinear nature, which is in accordance with theoretical results following from new supposition of mechanism of migration act in semiconductors.

Key words: diffusion, migration, semiconductor, photostimulated diffusion.

M.Dzhibladze, L.Berdzenishvili

Influence of Temperature on Generation Properties of the Waveguide Neodymium Laser

Presented by Corr. Member of the Academy T.Sanadze, April 5, 1999

Abstract. Investigation of generation properties of the waveguide spoke laser on neodymium glass at temperatures 145-370 K has shown, that the absorbing colour centres on kinetics of generation of the laser as giant pulses, render maximum influence at room temperatures. Effect of Q-switches is practically absent at temperatures of an active element below 200 K and is a little loosened at heating of an active element above 300 K.

Key words: waveguide neodymium laser.

Member of the Academy G.Tsintsadze, T.Pagava, V.Garnic, Z.Basheleishvili

The Charge State of Metastable Frenkel Couples in
Electron-Irradiated n- and p-type Silicon Crystals

Presented December 21, 1998

Abstract. The volumetric photo e.m.f measured along the silicon samples subjected to local irradiation in the conditions of different external electric fields revealed that the Frenkel couples in irradiated n-type silicon are composed of opposed sign carriers in the metastable state, whereas in the p-type material the carriers are of the same sign. On the basis of the results of the experiments a hypothesis has been presented that the concentration of the metastable couples depends on the irradiation energy and the charge state of the primary radiation defects.

Key words: silicon, local irradiation, volumetric photo e.m.f, radiation defects, charge state.

Member of the Academy N. Amaglobeli, L. Abesalashvili, B. Chiladze, V.Kartvelishvili, M. Kopadze, R. Kvatadze, N. Lomidze, G. Nikobadze,
T. Pitskhelauri, R. Shanidze

A Study of pp Interference Correlations in Neutron-Carbon Interactions

Presented April 8, 1999

Abstract. Bose-Einstein correlations in pp pairs have been studied in neutron-carbon interactions measured with the EXCHARM detector. An enhancement in the production of the same charge pion pairs has been observed in the region of low four-momentum difference. The obtained values for the strength of the correlations and the radius of the p emitting source are:l = 0.510.02(stat.)0.08(syst.) and R =1.180.04(stat.)0.21(syst.) fm.

Key words: correlations, particle.

Member of the Academy N. Amaglobeli, L. Abesalashvili, B. Chiladze, V.Kartvelishvili, M. Kopadze, R. Kvatadze, N. Lomidze, G. Nikobadze,
T. Pitskhelauri, R. Shanidze

A Study of pp Interference Correlations in Neutron-Carbon Interactions

Presented April 8, 1999

Abstract. Bose-Einstein correlations in pp pairs have been studied in neutron-carbon interactions measured with the EXCHARM detector. An enhancement in the production of the same charge pion pairs has been observed in the region of low four-momentum difference. The obtained values for the strength of the correlations and the radius of the p emitting source are:l = 0.510.02(stat.)0.08(syst.) and R =1.180.04(stat.)0.21(syst.) fm.

Key words: correlations, particle.

J.Mebonia, M.Abusaini, P.Saralidze, K.Sulakadze, G.Skhirtladze

Mechanism of Nucleon-Deuteron Quasielastic Scattering

Presented by Corr. Member of the Academy A. Khelashvili, February 22, 1999

Abstract. We offer the unitary method for investigation of nucleon-deuteron quasielastic scattering, taking into account only single scattering. The comparatively simple approach gives the ability to explain wide range of experimental data, which make it possible to use it for more complex nuclear processes.

Key words: impulse approximation, quasielastic scattering, unitary schemes.

V.Jakeli, Z.Kachlishvili, M.Khizanishvili, E.Khizanishvili

New Mechanism of Hot Charge Carriers Capture and
Corresponding Computational Experiment

Presented by Corr. Member of the Academy T. Sanadze, July 26, 1999

Abstract. The probability of electron capture on positively charged centres both at quasielastic scattering and quite non-elastic scatterings on neutral centres (N0) is investigated. Simulation process was carried out. The range of electron energy and N0 for which the non-elastic scattering process must be taken into account while capture for weakly compensated semiconductors was obtained.

Key words: charge carriers, capture, scattering.

Sh.Makandarashvili

Correlation between the Solar Radio Noise Storms and the Photosphere Optical Features

Presented by Member of the Academy E.Kharadze, April 19, 1999

Abstract. Long-term observations of the solar radio noise storms carried out at Abastumani Astrophysical Observatory with the solar radio telescope at 210 MHz are presented. It is shown that there is a strong correlation between the amplitude of the noise storm and sunspots number and their area.

Key words: radio storm, radio noise, radio burst.

O.Benashvili, Member of the Academy J.Lominadze, T.Toroshelidze

Investigation of the Stratosphere Ozone Long-Term Trend in Day-Time and Twilight

Presented May 14, 1999

Abstract. Seasonal variations of the stratosphere ozone long-term trend in morning and evening twilight are investigated at the Abastumani Astrophysical Observatory (41.8o N; 42.8o E) due to spectrographic observations. Ozone Chapuis absorption band photometry was used. The ozone content is established to rise in twilight compared with the day-time. An insignificant positive ozone trend is observed in long-term variations which is non-linear containing quasi 10-20 years periods of a rise-fall alteration.

Key words: stratosphere ozone, twilight, trends.

K. Tavartkiladze, N. Begalishvili, N. Nebieridze

Dependence of the Air Humidity on Temperature

Presented by Member of the Academy G. Svanidze, July 27, 1998

Abstract. Empirical formula has been obtained using many years observational data. The formula combines relative air humidity with temperature and water vapour elasticity. Universal nature of the formula is demonstrated for conditions of Georgia.

Key words: air humidity, temperature, empirical formula, error.

V. Amiranashvili

Numerical Calculation of the Spectral Aerosol Optical Depth Using Data on Integral Irradiance of the Direct Solar Radiation

Presented by Corr. Member of the Academy T. Chelidze, August 31, 1998

Abstract. A method for the numerical calculation of the wavelength dependence of atmospheric aerosol optical depth is described. The method is based on the solution of a nonlinear integral equation. Test calculations have shown a good agreement between calculated and experimentally attained data.

Key words: optical depth, functional, regularization.

L.Morchiladze, L.Gordjoladze, D.Toriashvili

Synthesis of some Thiosalts and their Application in
Reprogrammed Storage Device

Presented by Member of the Academy G.Tsintsadze, May 3, 1999

Abstract. Reactions of thioindates and thiogallates formation in systems LiInS2(LiGaS2)-MeCl2-H2O(Me=Ca,Ba) using various physicochemical methods have been studied. Optimal conditions of calcium thioindate and barium thiogallate formation are established. Voltamperic characteristics of calcium thioindate and barium thiogallate thin films are measured. By electric characteristics these semiconductors are similar to chalcogenid glasses used for storage.

Key words: thiosalts, semiconductors, storage.

Sh.Papava, N.Dokhturishvili, N.Maisuradze, G.Papava, N.Tsomaya, Member of the Academy T.Andronikashvili

The Study of some Kinetic Regularities of Hardening Process of Aminoplast Polymer Compositions in Isothermal Conditions under Vacuum

Presented August 23, 1998

 

Abstract. We present a study of the hardening process of polymer compositions of aminoplast on the basis of melamine-formaldehyde oligomer and diatomite. Diatomite content in compositions change from 10 to 80 mass %. When diatomite content is maximum (i.e. 80 mass %) the transformation degree is maximum too. The kinetic parameters of the process (constants of rate, reaction order, activation energy) have been determined.

Key words: aminoplasts, polymer composition, constant of rate, activation energy.

R. Kvaratskhelia, E. Kvaratskhelia

On the Possibility of Estimation of the K'a and K"a Values of Dibasic Acids with the Close Values of First and Second
Dissociation Constants by Voltammetric Data

Presented by Corr. Member of the Academy J. Japaridze, July 6, 1998

Abstract. The method for an estimation of the dissociation constants of dibasic acids with the close values of K'a and K"a in a sufficiently narrow interval by the hydrogen ions concentration values has been suggested. The validity of this method has been proved in the case of dicarboxylic acids (malonic, succinic and adipic) by voltammetric data obtained in the solutions of these acids).

Key words: dicarboxylic acids, dissociation constant, hydrogen ions.

J. Kebadze, V. Pruidze, L.Kakuria, T. Chakhunashvili

Production of Electrolytic Manganese Dioxide Using Graphite Carbon Fibrous Material

Presented by Member of the Academy J. Japaridze, May 24, 1999

Abstract. Electrolytic manganese dioxide has been obtained on the anode of graphite carbon fibrous material. Optimal content of the obtained product in the cathode mass of chemical electric source of zinc-manganate system and its efficiency have been defined. Some electrotechnical characteristics of the chemical electric battery (element R12) are estimated.

Key words: electrolytic manganese dioxide, chemical electric battery.

D.Gabunia, G.Darsavelidze, Z.Zoidze, D.Lezhava, D.Khomeriki, L.Kurashvili

Inelastic Properties of Explosion Compacted Boron

Presented by Corr. Member of the Academy I.Baratashvili, November 3, 1998

Abstract. At the frequency range from 0.2 to 2 kHz and at temperature 800 to 1100K the T-dependence of internal friction and elastic modulus were investigated in boron samples prepared by explosion compacting method. Intensive maximum was observed at ~600K and ~0.35 kHz frequency. The observed relaxation process was attributed to twin boundary migration.

The modulus and the background damping T-dependence were explained by irreversible structural changes in disordered regions of explosion compacted boron.

Key words: boron, internal friction, elastic vibrations.

I.Kakubava, N.Kutsiava

Some Questions of Semi-Markovian Processes Application in Problems of Chemical Engineering Systems Reliability Analysis

Presented by Corr. Member of the Academy A. Prangishvili, September 28, 1999

Abstract. We have studied the questions of system analysis and reliability for chemical engineering processes with account of multifactoral action. A model of reliability analysis of complex system is constructed in the form of integral equations system. The existence and uniqueness of its solution has been established.

Key words: failure, renewal, stochastic process.

G. Ananiashvili

On Biostratigraphy of Middle Miocene Sediments of Eastern Paratethys

Presented by Corr.Member of the Academy M.Topchishvili, June 29, 1998

Abstract. Recent paleontological material (molusks, foraminifers) obtained in 1996 from the stratotype section (Kerchi peninsula, v.v.Skelia and Kamishlak) of the Tarkhanian enables us to assume that spirialis clays are only the lowermost part (10-12m) of the Tarkhanian while the uppermost part (90-100m) is attributed to the Chokrakian according to 12 index species preserved in it.

Key words: Tarkhanian, molusks, foraminifers, Miocene, Kotsakhurian.

G.Gugunava, M.Perel'man, N.Chikovani

Migration Mechanism of the Substances which form Magmatogenic and Sedimentogenic Deposits

Presented by Member of the Academy I. Gamkrelidze, September 2, 1998

Abstract. The forces which promote migration and evacuation of the mineral substance of magmatogenic (endogenous) and sedimentogenic (exogenic) series are considered. In particular, as an example, hydrothermal, magmatogenic and non-magmatogenic groups are studied.

Key words: subduction, tectonic plates, filtratio, magmatic.

I.Chkhartishvili, J.Lordkipanidze

Intensification of the Rolling Process on the Pipe Rolling Agregate "400"

Presented by Member of the Academy R.Adamia, May 18, 1999

Abstract. The changes in the rolling technology (transfer of determination on the outlet cone of the rolling stock, lengthening of the guides working part, increase of the slope angle of the rulers outlet cone, the coincidence of the shells primary and secondary dog conditions) on the second rolling mill of Pipe Rolling Agregate "400" give possibility to use the billet of 300 mm diameter instead of 350 mm defined by the technological project for the production of pipes of 377 and 426 mm diameters.

Key words: pipe rolling agregate, piercing rolling mill, shell, guide, billet dog, pipe

I.Kruashvili, I.Gogsadze

Establishment of Stable Form of Self-Scouring Watercourse Cross-Section

Presented by Member of the Academy Ts. Mirtskhoulava, April 21, 1999

Abstract. Analytical dependence expressing stable form of self-scouring watercourse cross-section in case of representing hydraulic radius of tractive force of stream proportionally has been obtained. Relative width on water surface is determined as one of the criteria of stability.

Key words: self-scouring, watercourse.

V. Mdzinarishvili

Discrete-Time Solitons

Presented by Member of the Academy V.Chichinadze, May 14, 1999

Abstract. Conditions of arising the reduced solitons are given. Two systems of functions of discrete-time solitons are obtained. The bond of discrete-time solitons with new systems of orthogonal functions is noted.

Key words: solitons, orthogonal, discrete-time.

P.Kervalishvili, N.Jibladze

The Transition: Initial Characteristics

Presented by Member of the Academy V. Chavchanidze, September 10, 1998

Abstract. Transformations going on in the former socialist countries are considered in the communicational-informational aspect. Concepts of "global" and "local" transition periods are introduced and, within this context, relationships of respective actors, "developed countries" and " transiting countries", are envisaged. Communications without rational messages are identified as week side, and information flows between the actors (forming a general environment of their interactions) are identified as positive side of the relationship.

Key words: global transition period, local transition period, real time, rational messages, missed communications, information flows.

N. Gulua

On Computer Syntactical Analysis of Georgian Texts

Presented by Corr. Member of the Academy A. Prangishvili , December 30, 1998

Abstract. In present paper we have studied the problem of computer syntactical analysis of Georgian texts. An original method for establishing Georgian phrase syntactical structure is proposed. Corresponding rules of syntactical analysis are shown.

Key words: formal grammar, formal language, syntactical analysis, lexical substitution.

K. Beriashvili, I. Shatirishvili, O. Zardalishvili, Member of the Academy

T. Andronikashvili

Study of Influence of Natural Zeolites Introduced to Soil on the Energy of Germination and Sprouting of some Vegetable Cultures

Presented July 6, 1998

Abstract. The influence of natural zeolites (clinoptilolite and phillipsite) introduced to the soil on the energy of germination and sprouting of fennel, basil, lettuce and beet (red) cultures was established.

Key words: zeolite, clinoptilolite, phillipsite, energy of germination, sprouting.

E. Baiashvili

On the Study of Female Gametophyte of Alycha (Prunus cerasifera Ehrh.)

Presented by Corr. Member of the Academy G. Nakhutsrishvili, January 4, 1998

Abstract. Irrespective of the disturbances observed in the process of formation of the female gametophyte the polyploid (2n = 48) forms of alycha (Prunus cerasifera Ehrh.) are highly fertile. Hence they should be considered as alloauto-polyploids.

Key words: embryo sac, ovule, antipodes, polar nuclei.

E.Kapanadze, M.Bilanishvili, N.Pasurashvili

Microelement Content of the Pollen of Persian Walnut (Juglans regia L.), Austrian Pine (Pinus nigra arn.) and Deodar Cedar (Cedrus deodara Loud.)

Presented by Member of the Academy G. Gigauri, April 23, 1998

Abstract. Microelement content of the pollen of Persian walnut has been investigated by spectrum analysis according to A.Rusakova method in comparison with Austrian pine and Deodar cedar in raw material and ash.

It turned out that the pollen of Persian walnut contains 14 microelements: copper (Cu), lead (Pb), nickel (Ni), chromium(Cr), molybdenum (Mo), manganese (Mn), titanium (Ti), barium (Ba), strontium (Sr), zirconium (Zr), bismuth (Bi), stibium (Sb), cadmium (Cd), lanthanum (La).

Key words: microelements, pollen.

Kh. Gamkrelidze, N. Zarnadze, M. Gogoberidze

Receipt of in vitro Cultures of Stevia rabaudiana and its Microclonal Propagation

Presented by Member of the Academy G. Kvesitadze, July 27, 1998

Abstract. Sterilization conditions for receiving in vitro cultures of Stevia rabaudiana have been detected. Best results have been achieved by diocide 0.2% water solution exposing within 15 min. Optimal conditions for microclonal propagation from apical and axillary buds of intact plant have been chosen via introducing of different growth regulators into Gamborg modified nutrient media (B5).

Key words: microclonal propagation, Stevia rabaudiana, in vitro cultures, sterilization.

N. Partskhaladze

The Effect of Hypoxia on Radiosensitivity of Rat Embryos

Presented by Member of the Academy K.Nadareishvili, September 14, 1998

Abstract. It has been shown that the gas hypoxic mixture does not have radioprotective effect when applied to the embryos at the pre-implantation and main organogenesis stage. The indicators of radiation effect were embryos prenatal death, number of liveborns and their survival.

Key words: rat embryos, hypoxia, radiosensitivity.

N.Doreulee, M.Datunaishvili, Member of the Academy T.Ioseliani

Copper Modulation of NMDA-mediated Potentials in
Hippocampal Slices of Rat

Presented June 7, 1999

Abstract. In this study we have characterized the effect of copper (Cu2+) on rat hippocampal CA1 pyramidal cells. The N-methyl-D-aspartate (NMDA) component of the field EPSP, isolated by adding CNQX and bicuculline in Mg2+-free solution was reduced by copper and the Cu2+- effects were dose-dependent.

Key words: rat, CA1, NMDA, Cu2+.

I.Meskhishvili, D.Kakhiani, G.Onoprishvili, G.Ormotsadze, Member of the Academy
K.Nadareishvili

Heart Rate Variability in Male Waking Chinchilla Rabbits

Presented July 8, 1998

ABSTRACT. Main statistical parameters of heart rate variability (HRV), including data on the variations of spectrum within the range of 0.01-5 Hz, covariation and so on were established for male chinchilla rabbits during passive wakefulness. By comparison of time-domain and its derivative indices, as well as main parameters of frequency-domain analysis two groups of rabbits with various initial level of cardiac activity regulation were distinguished: group I with predominance of cholinergic system activity and group II with predominance of adrenergic one. Consequently, experiments on rabbits require separate generalization of results obtained in these groups of animals. For this HRV studies appear to be rather reliable criterion.

Key words: rabbit, heart, heart rate variability.

G. Mrevlishvili, T. Mdzinarashvili, M.Al-Zaza, T. Tarielashvili

The Entropic Cost of Bound Water and Protein-DNA Interaction

Presented by Member of the Academy M. Zaalishvili, October 26, 1998

ABSTRACT. The entropic cost and free energy cost of bound water for some biopolymers were calculated based on the measurements of low-temperature heat capacity of biopolymers in the temperature range (2-400 K). The thermodynamic characterization of protein-DNA interactions has been studied. We found that the water of protein and DNA surface may give significant contribution to the thermodynamics of protein-DNA association and consequently in the process of protein-DNA recognition.

Key words: protein-DNA interactions, bound water, the entropic cost.

R. Akhalkatsi, T. Bolotashvili, L. Kharazishvili, V. Philauri, Corr. Member of the Academy N. Aleksidze, Corr. Member of the Academy T. Zaalishvili

The Identification of Lectin-Like Proteins in Rat Brain Cell Nuclear Matrix

Presented August 3, 1998

Abstract. The lectin-like proteins were identified in rat brain cell nuclear matrix. They are characterized by a high hemagglutination activity and expressed the specificity to the following carbohydrates: D-GlcNAc > D-Gal = D-Lac > D-Glc.

Key words: rat brain, nuclear matrix, lectin-like protein

Corr. Member of the Academy T.Zaalishvili, I.Gabriadze, K. Kolkhidashvili, D.Margiani, V.Philauri, N.Surguladze, T.Tsitskishvili, G.Zaalishvili

Influence of X-irradiation of Rats on the Brain and Liver Cell Nuclei and Nuclear Matrices Poly(ADP-ribose) Polymerase and NMN Adenylyltransferase Activities

Presented December 21, 1998

V. Chubinidze, T. Beriashvili, N. Kekelidze, D. Chubinidze

Investigation of Volatile Oil of Pinus eldarica Medw.

Presented by Corr. Member of the Academy D. Jokhadze, June 20, 1998

ABSTRACT. It has been investigated volatile oil of different age needles and cortex of Pinus eldarica Medw. Their quantitative content and physico-chemical characteristics have been established. Monoterpene hydrocarbons content of volatile oil has been studied.

Key words: Pinus erdarica Medw., volatile oil, monoterpene.

N. Metreveli, L. Namicheishvili, K. Jariashvili, G. Mrevlishvili

Denaturation Increment of Heat Capacity in Diluted Aqueous Solutions of Collagen in the Presence of Neutral Salts

Presented by Member of the Academy G. Kvesitadze, May 21, 1999

Abstract. The effect of neutral salts on collagen macromolecule conformation has been investigated including their action on the macromolecule as well as on its enclosing area (structural water of collagen molecule). All this play a part in the value of such an important thermodynamic parameter as the denaturation increment of heat capacity DCp.

Key words: collagen, denaturation increment of heat capacity.

I. Abdushelishvili, B. Arziani, V. Ugrekhelidze

Role of some Exocellular Enzymes of Corn in Transformation Process of Foreign Phenols

Presented by Member of the Academy G. Kvesitadze, March 22, 1999

Abstract. Some exocellular enzymes of corn roots and their role in the transformation process of foreign phenols (hydroquinone, resorcinol) have been investigated. It is established, that the nutritious medium of 10-day old corn seedlings is characterized with high peroxidase activity and weak o-diphenoloxidase activity; mono-phenoloxidase and phenol glycosidase activities in a nutritious medium are not found.

Key words: corn, exocellular enzymes, resorcinol, hydroquinone, detoxication.

M. Gurielidze, D. Pataraya, Member of the Academy G. Kvesitadze

Isolation of Strains of Actinomycetes Active to Phytopathogenic Fungi from Rhizosphere and Plant Roots

Presented September 28, 1998

Abstract. Among newly isolated from plant roots and rhizosphere 225 strains of actinomycetes, 45 strains of actinomycetes-antagonists have been revealed affecting phytopathogenic fungi - Rhizoctonia sp., Fusarium solani and F. oxysporum which compose 20% of actinomycetes total amount.

Key words: actinomycete-antagonist, phytopathogenic fungi, plant diseases, antimicrobial activity.

N.Dadiani

Mycobiota of Okra (Hibiscus esculentus L.) in Georgia

Presented by Corr. Member of the Academy B.Kurashvili, November 2, 1998

ABSTRACT. We report on the diseases of Hibiscus esculentus L. for the first time in Georgia. There have been identified eleven fungal pathogens.

Key words: okra, fungal diseases, mycobiota.

M.Chkoidze, B.Tavadze, T.Chapidze, M.Tvaradze, A.Supatashvili, D.Kuchava, I.Kraveishvili, G.Kapanadze

Hematologic Diagnostics of Eastern Spruce (Picea orientalis Link.) Pest Entomofauna Diseases and Forecasting of its
Propagation

Presented by Member of the Academy G. Gigauri, May 10, 1999

Abstract. Hematologic indices of Eastern spruce (Picea orientalis Link.) main pests (Dendroctonus micans Kugel, Ips typographus L., Ips acuminatus Eichn.) diseases are presented. Pathologic spectrum, of pests hemolymph is studied for the first time. The physiological condition of pest insects is established according to the quantitative, morphological and structural changes of hemocytes.

Key words: entomofauna, boveria, protozoid, polyhedrosis, bacteriosis, hemocytes, pycnosis, septicemia.

M. Kotetishvili, T. Tsitsishvili

The Photostability of the Bacillus thuringiensis
Organic-Chromophore Complexes

Presented by Corr. Member of the Academy B. Kurashvili, August 10, 1998

ABSTRACT. In the bioassays the new photostabilized formulations (organic-chromophore complexes) of the Bacillus thuringiensis were tested. The results of the experiments carried out in natural conditions show the high photoprotective quality of the B.t-Berberine and the B.t.-Chinese complexes.

Key words: Bacillus thuringiensis, organic-chromophore complexes, photostability, B.t.-Acriflavin complex (Af.), B.t.-Berberine complex (Berb.)/, B.t. Chinese bark (Chinese) complex; European cabbageworm (Pieris brassicae L.); entomocidal activity.

M. Lobzhanidze

The Results of the Study of Mulberry Tree Harmful Acarocomplex in Georgia

Presented by Corr. Member of the Academy I. Eliava, July 5, 1999

Abstract. The paper deals with biological peculiarities of new species of mulberry mites.

Key words: mulberry, mites, pest, species, insect, damage, sericulture, silkworm breeding, phytophage, acarofauna.

Corr. Member of the Academy B.Kurashvili

To the Study of the Structure of Echinococcus Vesicle and the Composition of its Fluid

Presented June 17, 1999

ABSTRACT. The fully developed stage of the echinococcus vesicle consists of the following main elements: lamellar membrane or cuticle; germinal or embryonic membrane; vent capsule with scolexes and vesicle fluid.

Key words: echinococcus, tape-worm, scolex.

M.Gagua, D.Dzidziguri, E.Mikadze, M.Rukhadze, I.Bakhutashvili, Corr. Member
of the Academy V.Bakhutashvili

Effect of Plaferon LB on Morpho-Functional Activity of Hepatocytes under Conditions of Hormonal Disbalance in White Rats

Presented November 3, 1998

Abstract. The effect of Plaferon LB on morpho-functional activity of hepatocytes was studied in rats on the experimental model of hormonal disbalance (bilateral adrenalectomy). The composition is shown to stimulate the RNA-synthesis activity of liver cells and serves as the inhibitor for the destruction process in liver tissue.

Key words: Plaferon LB, adrenalectomy, hepatocyte, transcription.

V. Yurin, J. Oniani, A. Kudriashov, E. Esebua, T. Kaladze

Membranotropic Effects of the Cooperative Action of some Xenobiotics

Presented by Corr. Member of the Academy N. Aleksidze, July 5, 1999

Abstract. Cooperative impact of xenobiotics, the prior components of sewage waters of some plants, on bioelectric reaction of plasmalemma of kharo-algae Nitella has been studied. It was shown that depending on component content antagonism (saturne and propanide) or synergism (phenol and formaldehyde, metaphose and hexachlorane) can be observed during the cooperative actions in contrast with one - component ones, although the directions of the shift in ion permeability of membrane in both cases, as a rule, coincide.

Key words: xenobiotics, membranotropic effect, Nitella.

R.Rukhadze, T.Chikovani, Corr. Member of the Academy V.Bakhutashvili, T.Sanikidze, D.Metreveli, I.Pantsulaia, M.Balarjishvili

Influence of Plaferon LB on the Metabolism of Nitric Oxide (NO) in Case of Thyrotoxicosis

Presented November 3, 1998

Abstract. Nitric oxide metabolism during thyrotoxicosis and influence of Plaferon LB on it in experimental thyrotoxicosis was studied. In the case of diffuse toxic goiter, as well as in experimental thyrotoxicosis the increased formation of nitric oxide takes place that indicates the formation of large amount of free radicals. Increased formation of FeS-NO and HB-NO indicates the formation of large amount of nitric oxide in the organism during thyrotoxicosis. Plaferon LB prevents redundant formation of nitric oxide during experimental thyrotoxicosis and facilitates its quick decrease during the period of restoration.

Key words: nitric oxide, Plaferon LB, thyrotoxicosis.

E. Uchaneishvili, T. Gvamichava, L. Sulava

Immunocompetent Cells in Experimental Tumours of Colon

Presented by Member of the Academy N. Javakhishvili, October 12, 1998

Abstract. In induced tumours simultaneously with the deepening of dysplastic changes in tumoural parenchyma the degree of infiltration of stroma with immunocompetent cells increases. The composition of infiltrate also changes. In adenomas with mild dysplasia plasmocytes prevail among the free cells of stroma, with the growth of dysplasia degree their amount decreases gradually. Percentage of lymphocytes, on the contrary, increases in accordance with the growth of dysplasia degree. In adenomas with grave degree dysplasia the amount of lymphocytes prevails over the amount of plasmocytes.

In invasive forms of cancer cellular infiltration of stroma decreases and even almost disappears, what points to depression of local immune reactions.

Key words: colon, adenoma, cancer, immunocompetent cells.

N. Kirvalidze, N. Inauri

Semiological Typology of Anthroponyms in Modern English

Presented by Member of the Academy G.Tsitsishvili, June 2, 1998

Abstract: Componential analysis of the dictionary definitions of anthroponyms reveals that two layers of object-logical content of the word are realised in their meaning-denotational and significative. The presence and prevalence of these components in semantic structure of anthroponyms determine their sign status. As a result of generalization of their semantics we single out the following main semiological classes: 1. anthroponyms proper, 2. real, 3. relative, 4. nominal, 5. collective, 6. deictic, 7. quantifier anthroponyms.

Key words: anthroponym, sign status, componential analysis, semantic structure

V. Lekiashvili

On the Problem of Linguistic Units

Presented by Corr. Member of the Academy A. Gvakharia, September 14, 1998

ABSTRACT. Searching for some formal definition of a linguistic unit we suggest that the units are to be identified by the combinative features of their constituents regarding the very possibility of asserting any regular restriction in the mutual compatibility as the indicator of the complexes being the units.

Key words: unit, compatibility, combination.