MOAMBE
1999
volume 159 number 3 May-June
Botany
Sh.
Shetekauri
Biotopes of Petrophytic Flora of the
Presented
by Corr. Member of the Academy G. Nakhutsrishvili,
Abstract. High mountain florocoenotic community of the Central
and
Sh.
Shetekauri
Biotopes of Petrophytic Flora of the
Presented
by Corr. Member of the Academy G. Nakhutsrishvili,
Abstract. High mountain florocoenotic community of the Central
and
Sh.
Makharadze
Maximal
Idempotent Semigroups in the Binary Relation Semigroup
Presented
by Corr. Member of the Academy D. Baladze,
Abstract. In the present work we consider
a class of subsemigroups from the binary relation semigroup BX whose
every semigroup has as its right unit on the set X the maximal quasiorder
relation, which is different from the universal relation. All maximal
idempotent semigroups are described for that class of semigroups.
Mathematics
Ya.
Diasamidze, Sh. Makharadze
Right Zeros of Complete Semigroups of Binary Relations
Presented
by Corr. Member of the Academy D.Baladze,
Abstract. In the present paper we consider
right zeros of complete semigroups of binary relation.
Mathematics
A.
Liparteliani
Additional Properties for Large Inductive Dimension in
the Classes of
Presented
by Corr. Member of the Academy N. Berikashvili,
Abstract. In the present paper there are given inequalities for large
inductive dimension in the classes of normal spaces, which are similar to
Menger-Urison’s inequalities.
Mathematics
I.
Khazhalia
Shift Operator with Respect to Wavelet Bases
Presented
by Member of the Academy L.Zhizhiashvili,
Abstract. The boundedness of shift operator in Lp(R), 1
< p < +¥, with
respect to wavelet bases is investigated.
Mathematics
G.
Khimshiashvili, A. Ushveridze
On the Average Topological Degree of Random
Polynomials
Presented
by Corr. Member of the Academy N.Vakhania,
Abstract. We investigate the average
topological degree of random polynomial mappings defined by pairs of random
polynomials in two variables. We fix the algebraic degree n of both polynomials
and investigate its relation to the average absolute value of topological
degree. For certain normal distribution of coefficients, it is established that
this average asymptotically grows as n1/2. Some corollaries and related
results are also presented.
Mathematics
O.
Chkadua, R. Duduchava
Asymptotics of Solutions to the Crack Problem
Presented
by Member of the Academy T. Burchuladze,
Abstract. A complete asymptotics of solutions
of the crack problem for an anisotropic elastic body is investigated, when
displacement vectors are given on the crack boundary.
Mathematics
O.
Chkadua, R. Duduchava
Asymptotics of Solutions to the Crack Problem
Presented
by Member of the Academy T. Burchuladze,
Abstract. A complete asymptotics of
solutions of the crack problem for an anisotropic elastic body is investigated,
when displacement vectors are given on the crack boundary.
Mathematics
A.Tikaradze
Subdivision of the Simplicial and Semisimplicial
Objects
Presented
by Corr.Member of the Academy Kh.Inassaridze,
Abstract. A new proof is given that any
simplicial Abelian group or its any subdivision are of the same homotopic type.
The relations between the homotopies of subdivision of semisimplicial Abelian
groups and corresponding Tor groups are also investigated.
Mathematics
Sh.
Tetunashvili
On some Properties of Double Function Series
Presented
by Member of the Academy L. Zhizhiashvili, May 11, 1998
Abstract. In the paper we present theorems
for some double function series, from which in particular follows that, if
double trigonometric series with coefficients aij is convergent on [0,1]2
to a finite function F(t,t) = f(t)×g(t) then aij =ai×bj for
each
i ³ 0 and j
³ 0.
Mathematics
A.Danelia
On the Deformation of Zygmund’s Classes Z(w(2); L(Tm))
Presented
by Member of the Academy L. Zhizhiashvili, October 12, 1998
Abstract. The problem of deformation of
the classes Z(w(2); L(Tm)) with respect to the operator has been
studied.
Mathematics
D.Kighuradze
On Product of Separable Metric Spaces
Presented
by Corr. Member of the Academy N.Berikashvili, June 15, 1998
Abstract. In this paper some properties of the dimension
function dim on the class of separable metric spaces are studied by means of
geometric construction which may be realized in Euclidean spaces.
Physics
N.
Kekelidze, V. Gogiashvili, Z. Kvinikadze, Z. Davitaya, L. Milovanova,
G. Chikhradze, Z. Chubinishvili
The Optical Absorption Processes in the Infrared
Region and the Determination of the Impurity Concentration in n-Type Gallium
Arsenide
Presented
by Corr. Member of the Academy T. Sanadze, January 29, 1998
Abstract. In the present work the method
of determination of electrically active impurity concentration in n-type
gallium arsenide is given. The method is based on the investigation of free
carrier absorption processes in the infrared region. The corresponding
practical recommendations are worked out on the basis of the obtained
Physics
M.Kaviladze,
N.Gubadze, M.Kviriya, G.Natsvlishvili, E.Gamtsemlidze
K-Capcher of 41Ca and d41K as the Possible Cosmochronometer
Presented
by Member of the Academy R.Salukvadze, March 30, 1998
Abstract. Potassium isotopic
determinations was carried out using the Mattauch-Herzog-type mass spectrometer
with laser-ion source in which a renium double-filament source is also placed.
As a detector, a micro-channeled plate is used. The investigation shows that in
the 55 microvolumes of three stony metheorites (Saratov, Orlovka, Elenovka),
significant variations of the isotopic ratio 41K/39 K exceeding 1% are not
observed.
Physics
S.
Gotoshia
Lazer Raman Spectroscopy Study of Vibrational Dynamics
of GaP Crystal Lattice Modified by Boron and Argon Ion
Implantation
Presented
by Member of the Academy N. Amaglobeli, June 26, 1998
Abstract. Crystalline GaP surfaces modified by boron and argon
ion implantation have been studied by lazer Raman spectroscopy. It has been
established that change of full width at half maximum of LO phonon is related
with defect-induced stress in the GaP crystal lattice. We have determined
amorphization crytical doses for 110keV boron and argon ions by Raman
scattering.
Physics
L.
Mosulishvili, N. Shonia, V. Dundua
Analytical Parameters of X-ray Fluorescence and
Neutron
Activation Analysis Methods for Determination of Gold Content in Ores and
Concentrates
Presented
by Member of theAcademy G. Kharadze, April 27, 1998
Abstract. Among the physical methods of determination of gold
content, X ray fluorescence (XFA) and neutron activation analysis (NAA) methods
are of particular importance. These two methods make it possible to carry out
gold analysis without chemical or mechanical treatment and decomposition of the
samples under investigation. On the basis of evaluation of the advantages and
disadvantages of these methods, we conclude that with their combined
application the analytical possibilities of gold content determination should
be increased significantly.
Physics
A.
Gerasimov, A. Bibilashvili, Z. Bokhochadze, R. Kazarov, M. Vepkhvadze,
G. Chiradze, N. Kutivadze, Z. Samadashvili
Influence of Photostimulated Diffusion-Motive Force on
Impurity Redistribution
Presented
by Member of the Academy R. Salukvadze, June 2, 1998
Abstract. On the example of
photostimulated diffusion of Al in Si we have shown experimentally that the
distribution of impurity atoms depends on the value and direction of diffusion
forces arisen as a result of light influence upon the samples, what in its way
is defined by volume distribution of the concentration of antibalancing free
carriers.
Geophysics
Z.
Khvedelidze, N. Ramishvili
The Nature of Changes of Meteorologic Values in the
Earth Surface Layer of Atmosphere for Georgian Region
Presented
by Member of the Academy B.Balavadze, November 30, 1998
Abstract. The results of our study show a
great role of microrelief peculiarities in Earth surface layer in space time
distribution of meteorological values.
General
and Inorganic Chemistry
V.
Rukhadze, Z. Vatsadze, M. Gegeshidze, M.Gumberidze
Chemical Processes during Zinc Sulphide Synthesis and
their Influence on the Pigmented Characteristics of Zinc Sulphide
Presented
by Corr. Member of the Academy J.Japaridze, April 8, 1998
Abstract. Zinc sulphide synthesis process
from zinc chloride solution was investigated. Anomalous fall of solution pH was
outlined in that process. It was theoretically explained and confirmed by
experimental data that this phenomenon was caused by the formation of base zinc
sulphide. Mentioned assertion was proved by derivatographic investigations of
the final product. It is recommended to make synthesis in pH 1-3 interval.
Physical
Chemistry
D.Jishiashvili,
I.Nakhutsrishvili, R.Dzhanelidze, M. Katsiashvili
Mechanism of the Germanium Oxynitride Film Formation
Presented
by Member of the Academy K.Japaridze, April 13, 1998
Abstract. Surface reactions taking place at the Ge surface
heated in the hydrazine vapour have been investigated in the temperature range
of 300-973 K. GeO and Ge3N4 volatile molecules are formed onto the Ge surface.
Their subsequent sublimation and condensation on the GaAs substrate results in
the germanium oxynitride film formation. It was established, that at the
different stages of a film deposition the film composition changes until it
reaches Ge3N1.3O1.2.
Analytical
Chemistry
Sh.
Shatirishvili, Sh. Gigilashvili
Study of Biopolymers in Wines by Gas-Correlation
Chromatography
Presented
by Member of the Academy T. Andronikashvili, June 22, 1998
Abstract. Products of pyrolysis of the precipitates of the
wines “Kakheti” and “Rkatsiteli” were investigated by gas-correlation
chromatography. The obtained chromatograms enabled us to calculate not only the
kinetics of the final products but also that of the process of decomposition.
Physical
Chemistry
S.
Gedevanishvili, Z. A. Munir, Corr. Member of the Academy I. Baratashvili
The Use of an Electric Fields in the Combustion
Synthesis of Ceramic Composite
Presented
September 21, 1998
Abstract. Using field-activated combination synthesis (FACS),
composites of (1 - x) MoSi2-xSiC were prepared directly from elemental
powders. Systems with
0 < x £ 0.18 can
sustain a combustion wave but the product contained unreacted Si and C in
addition to MoSi2. Systems with x > 0.18 do not sustain a wave without the
application of an external electric field. Composites of MoSi2 and b-SiC can be synthesized for 0 £ x £ 1.0 in the presence of fields above threshold field values. The
threshold value decreased with increasing x value. Both combustion wave
velocity and temperature increased nearly linearly with an increase in field
above the threshold value for any given composition (x value). Effect of the
magnitude of the field on the nature and microstructure of the product were
also investigated.
Geology
I.
Kvantaliani
On the Lower Barremian of the Southern Limb of the
Racha-Lechkhumi Syncline (Western Georgia)
Presented
by Corr. Member of the Academy M. V. Topchishvili, April 13, 1998
Abstract. On the Southern limb of the Racha-Lechkhumi syncline,
within the lower Barremian sediments, ammonites of Holcodiscidae family have
been identified for the first time. An attempt of zonal subdivision of the
Lower Barremian of the section in v. Nikortsminda outskirts in correlation with
the Lower Barremian the Northern limb of the mentioned structure is made. Now
on these grounds we can affirm that Holcodiscidae occurs not only on the
Northern limb of the Racha-Lechkhumi syncline, as it was supposed earlier, but
also in the section of Nikortsminda outskirts on the Southern limb, i. e. both
in deepwater and shallow water parts of a neritic region of the sea. Recent
data specify the spreading areal of “ammonitic facies of the Barremian”.
Geology
J.Meskhia
Geomorphology of Plains and Mountains: Interaction and
Interrelation (on the Example of West Georgia)
Presented
by Corr. Member of the Academy Z.Tatashidze, December 30, 1998
Abstract. Relief of West Georgia is considered in the united
geomorphologic system: morphostructure -morphosculpture- correlated sediments,
i.e. geologic-geomorphologic formation. The morphostructural analysis method
with morphostructural and morphosculptural approach is worked out.
Geography
I.
Bondirev, G. Khachapuridze, M. Bochoridze
The Spatial Differentiation of the Earth Crust’s
Energetic
Parameters and Geography of Ancient Civilizations
Presented
by Corr. Member of the Academy Z. Tatashidze, April 6, 1998
Abstract. The existence of definite
correlation among the ancient civilizations and energetic knots, which are
located in the Earth crust, is considered in the present article. The emphasis
is done on the spontaneous character of these knots and the wide range of
fluctuation of the energetic knots.
Hydrology
N.
Bolashvili
Attempt of Flood Forecast on the Basis of the Theory
of Recognition Images
Presented
by Member of the Academy G. Svanidze, May 4, 1998
Abstract. The theory of images recognition
and OP method is considered. Hypersurface was constructed giving the
possibility to forecast water discharge increase with concrete values of the
process causing factors.
Heat
Engineering
T.
Magrakvelidze, N. Bantsadze, N. Lekveishvili
Similitude Equations for Calculating Heat Transfer
Coefficient in Stirred Tanks
Presented
by Corr. Member of the Academy P. Merabishvili, April 13, 1998
Abstract. Heat transfer from smooth and rough surfaces in
stirred tank has been investigated experimentally. It was shown that
two-dimensional artificial roughness increases heat transfer intensity for
about two times. Equations for calculating heat transfer coefficient both for
smooth and rough surfaces are obtained.
Hydraulic
Engineering
F.
Shatberashvili , O. Sichinava, A. Siamashvili
Some Hydraulic and Hydromorphometric Regularities of
Flow in Stable Beds
Presented
by Member of the Academy O. Natishvili, February 3, 1999
Abstract. The approaches for determining soil bed parameters
were studied. New dependence to calculate the permissible velocities for types
of soils is propos
Hydraulic
Engineering
T.Gvelesiani,
R.Danelia, G.Berdzenishvili
Mathematical Model of Nonstational Hydrodynamic
Processes of Mobile Mud Flow on the Bottom of Reservoir
Presented
by Member of the Academy O.Natishvili, April 10, 1999
Abstract. Wave process generated in reservoir as a result of
constant thickness mud flow spreading on its bottom is regarded. Corresponding
solution of flat boundary problem is obtained on the basis of the theory of
small amplitude waves and assumption that liquid is ideal, but its movement is
potential. The results of computer calculations are given for one of the
examples: wave profiles for various moments of mud flow spreading on the bottom.
Automatic
Control and Computer Engineering
V.
Mdzinarishvili
New Orthonormal Systems Based on Even Numbers
Presented
by Member of the Academy V. Chichinadze, October 12, 1998
Abstract. New orthonormal systems based on
even numbers are received. The new orthonormal system based on odd number is
used. Illustrative example is given.
Botany
Sh.
Shetekauri
Biotopes of Petrophytic Flora of the High Mountain
Caucasus
Presented
by Corr. Member of the Academy G. Nakhutsrishvili, May 25, 1998
Abstract. High mountain florocoenotic community of the Central
and Eastern Caucasus and their biotopes are studied. The rich variety of
biotopes is revealed in different vertical belts. The lithological location is
declared as the centre of speciation.
Plant
Physiology
E.
Chkhubianishvili, L. Kobakhidze, Sh. Chanishvili
UV-Radiation Effect on Content of Total Protein and
Productivity of some Vegetable Cultures
Presented
by Member of the Academy G. Sanadze, April 13, 1998
Abstract. Influence of additional ultraviolet (UV) radiation in
field conditions (using DRT-400 lamp) was studied on experimental plants of
carrot (Daucus sativus L.), radish (Raphanus sativus L. var.
radicula D. C.) and beet (Beta vulgaris L.). In studied plants the
highest content of total protein was found in the middle period of vegetation.
The following intensities of radiation; 60-133 “C” section, 1000-1400 “A”
section and 9500-20400 J. m-2.min-1 PhAR seemed to be the most favorable for
plant productivity. It is supposed, that in field conditions photoreactivation
of negative effect of short wave UV-radiation takes place.