MOAMBE
2001
volume 163 number
1 Jenuary-February
Mathematics
G.Japaridze
A Task Semantics for the Language of Linear Logic
Presented
by Corr. Member of the Academy N.Berikashvili,
Abstract. A game semantics is introduced.
Formulas of linear logic are understood as resource-bound tasks that are to be
accomplished by an intelligent agent. An axiomatization of the corresponding
logic is given.
Key words: linear logic, game semantics, task semantics, action,
planning.
Mathematics
G.Khimshiashvili,
R.Przybysz
Topological Aspects of Sklyanin Algebras
Presented
by Corr. Member of the Academy N.Vakhania,
Abstract. We introduce a class of
algebraic Poisson structures on R4 which appears to contain well-known
Sklyanin algebras. For this class, we explain how to obtain useful topological
information by computing Euler characteristics of Casimir levels and analyzing
the combinatorial structure of the corresponding foliation of R4. This enables
us to explicate previously known topological results about Sklyanin algebras
and formulate some interesting problems about algebraic Poisson structures on R4.
Key words: Sklyanin algebra, Casimir function, Euler
characteristic, mapping.
Mathematics
I.
Tsereteli
On an integer-valued topological invariant and it’s
behavior under one-to-one continuous mappings of special spaces
Presented
by Corr. Member of the Academy H. Inassaridze,
Abstract. Tychonoff spaces with
finite-order remainders are studied. Some facts concerning the behavior of such
spaces under one-to-one continuous mappings are established.
Key words: One-to-one continuous mapping, Tychonoff,
compactification, dimension.
Mathematics
G.Laitadze
Generalization of the Fan’s Fixed Point Theorem and
Equilibrium Points in Abstract Economy
Presented
by Corr. Member of the Academy N.Berikashvili, February 22, 2000
Abstract. In this paper we generalize
Fan’s fixed point theorem. Based on this fixed point theorem, the existence of
an equilibrium point of an abstract economic model is proved.
Key words: multivalued map, almost upper semicontinuous, almost
convex, abstract economy, equilibrium point.
Mathematics
M.Bakuridze
On Fourier Trigonometric Series
Presented
by Member of the Academy L.Zhizhiashvili, January 4, 2000
Abstract. Some approximate properties of Cesaro means of negative order of Fourier trigonometric series are established.
Key words: Cesaro means, Fourier trigonometric series.
Mathematics
A.
Danelia, M. Lekishvili
On Several Properties of the Conjugate Functions of
Multivariables
Presented
by Member of the Academy L.Zhizhiashvili, January 25, 2000
Abstract. In this paper we study the
smoothing properties of conjugate functions of multivariables active on the C(Tm)
class and approximate properties of several cube transformations of conjugate
series along the diagonal of the Tm.
Key words: conjugate functions, Cesaro and Abel-Poisson
transformations, modulus of continuity, Zygmund's condition.
Mathematics
T.
Kopaliani
Boundedness of Hardy Operators in Banach Function
Spaces
Presented
by Member of the Academy L. Zhizhiashvili, October 5, 1999
Abstract. Characterization of a class of
Banach function spaces on which the Hardy operators are bounded, is given.
Key words: Banach functional spaces, Hardy operator.
Mathematics
U.
Goginava
On the Divergence of Walsh-Fourier Series of the
Classes
Presented
by Member of the Academy L. Zhizhiashvili, March 8, 1999
Abstract. In 1994 the author formulated
sufficient condition for the uniform convergence of Walsh-Fourier series of the
class . In this paper we prove that this condition is necessary for the uniform
convergence of all Walsh-Fourier series of the class .
Key words: Walsh-Fourier series, uniform convergence.
Cybernetics
N.
Tkemaladze
Unsupervised Classification of Objects
Presented
by Member of the Academy V. Chavchanidze, December 2, 1999
Abstract. The heuristic method of
unsupervised classification of objects is elaborated. In this method there are
used artificial parameters and proximity between the blocks of BIB- or
PBIB(2)-design which is constructed on the basis of the descriptions of
objects.
Key words: unsupervised classification, artificial parameter,
BIB-design, PBIB(2)-design, proximity.
Cybernetics
G.Bolkvadze
Adaptive Stabilization Problem of Nonlinear Dynamic
Objects of Hammerstain Class
Presented
by Member of the Academy I. Prangishvili, November 16, 1999
Abstract. In this paper the
adaptive control problem in closed-loop identification system of nonlinear
dynamic object of Hammerstain class is reviewed. The models obtained for
open-loop system during the process of solving the problem of identification
after successful solving the tasks of convergence of identification algorithms
may be used for processing the affective adaptive control methods in
closed-loop system. At this time it rises the problem of control system
stabilization, the successful solving of which gives the possibility to create
steady adaptive control system (ACS) on the base of computer technics.
Key words: nonlinear dynamic object of Hammerstain class,
adaptive control systems, stabilization problem.
Cybernetics
M.Mikeladze,
A.Chaduneli , M.Gogebashvili
Determination of Modification of Plant Radioresistance
for Ecological Prognosis of Mountainous Regions
Presented
by Member of the Academy M. Salukvadze, September 5, 2000
Abstract. By the conducted of
investigation we have ascertained the coefficient of correction of
changeability of plant radioresistance towards the vertical zonality to
determine of which the logistical function was used. The mentioned method can
be used in the mathematical models which are constructed for prediction of
irradiation affect consequences on biogeocenosis. By analyzing the different
plant radioresistance, which provokes the various changes of interaction
processes within population, it is possible to predict the global successive
phenomena.
Key words: Plant radioresistance, mathematical model.
Physics
M.Chubabria,
Z.Jaliashvili, N.Kavlashvili, T. Medoidze, G.Tsintsadze
Properties of Superconducting Ceramics of Y1Ba2Cu3O7-d Type in Low Magnetic Fields
Presented
by Corr. Member of the Academy T.Sanadze, December 28, 1999
Abstract. The character of superconducting
transition of ceramics of Y1Ba2Cu3O7-d type in low magnetic fields (up to 150 oersted) has
been investigated. The shift of the temperature of zero resistance Tco in
magnetic fields sharply depends on initial parameters of the ceramics of high
temperature superconducting transition.The dependence of critical current on
magnetic field has been studied for samples which are different according to
density and specific resistance.
Key words: superconductivity, low magnetic field, critical
current density.
Physics
I. Metskhvarishvili
The Critical Currents Isotropy in the High Temperature
Superconductor Ceramic Bi1.6Pb0.3Sr2Ca2Cu2.8Oy Caused by Rotated AC Field
Presented
by Corr. Member of the Academy T. Sanadze, December 14, 1999
Abstract. This work is devoted to
experimental investigations of the linear- and circular-polarized ac
fields penetration into granular high-temperature superconductors. The
experimental results show that when the effective penetration depth leff is
less than characteristic grain size izotropic model is preferred.
Key words: high temperature superconductor, Josephson junction,
grain size, linear-polarized ac fields, circular-polarized ac
fields, flux-line-cutting model, isotropic model.
Physics
A.
Gerasimov, A. Bibilashvili, Z. Bokhochadze, N. Gochaleishvili
On Nature of the Difference between the Values of
Self-Diffusion Coefficients for Elements in Solid and Liquid States
Presented
by Corr. Member of the Academy T.Sanadze, February 22, 2000
Abstract. We explain the great difference
between the values of self-diffusion coefficients and their temperature
dependences for elements in solid and liquid states in case of melting
temperature. It is possible to indicate that the value of diffusion
coefficient, on the whole, is determined by the concentration of antibonding
quasiparticles (AQP). We have shown that in the melting point the great
difference between AQP concentrations (1019 and 1021cm-3) causes the
considerable difference between the self-diffusion coefficients of substance in
solid and liquid states, and the difference between temperature dependences is
caused by the fact that the relative change of AQP concentration in liquid
state is much less than in solid state.
Key words: mechanism of diffusion, self-diffusion, melting,
semiconductors, metals.
Physics
B.
Maisuradze
Necessary Means to Conjugate the Computer with the
Present Technique of Hydropower Station
Presented
by Member of the Academy N. Amaglobeli , October 17, 2000.
Abstract. The present system of control
and protection in hydropower station wears out and needs renovation with modern
apparatus. Sudden change of old technique with the new one may cause serious
impediments as some unforeseen defects may appear. To avoid the break in
providing the electric power it should be better to introduce new technical
means in parallel with the old one and after expiring the testing time to drive
the old technique out of control system step-by-step. The most recent
achievement of technique is a computer. The program is developed, which allows
to obtain information from all the points of the hydropower station, and after
having processed this information react accordingly.
Key words: hydroelectric power station, optoelectric couple,
computer.
Physics
G.
Gordadze, A.Gordadze, K.Megrelishvili
Study of the Possibility of Multielement Neutron
Activation Analysis of Geological Samples by Means of Neutron Multiplier
Presented
by Member of the Academy R.Salukvadze, June 6, 2000
Abstract. We have studied the
possibilities of performing multielement neutron activation analysis of
geological samples by means of neutron multiplier. It is shown that due to the
small number of neutrons flow using the ordinary relative method it is
impossible to conduct multielement activation analysis of geological samples
when its elemental content is within the limits of clarke. The use of original
polycomparator method makes possible to measure the content of 22 elements, in
error by no more than 20%.
Key words: neutrons multiplier, activation analysis.
Physics
N.Bagdavadze,
V.Dundua, Ts.Kvirikashvili, P.Imnadze, V.Kintsurashvili
Neutron-Activation Analysis of Iodine in Vegetable
Samples Using "Breeder-1"
Presented
by Member of the Academy G.Kharadze, August 20, 2000
Abstract. We have elaborated g-spectrometric method of instrumental
neutron-activation analysis (INAA) of iodine determination in vegetable
biomaterials. The essence of this method is in g-spectrometric measurement of radionuclide I128
analytical line (Eg=443 keV). Detection boundary and sensitivity equals 5x10-5 g and 2x10-4
g/kg in dry weight. The method was used to measure iodine content in tea
samples.
Key words: neutron-activation analysis, g-spectrometry, system "breeder-1", g-spectrometric measurement of I128.
Astronomy
Ts.Khetsuriani,
M.Gigolashvili, E.Khutsishvili, L.Geonjian, D.Japaridze, Corr. Member of the
Academy R.Kiladze, G.Salukvadze, Z. Kapanadze, A.Ökten,
T.Özişik, H.Gülsecen
Corona Observation in Elaziğ during the Total
Solar Eclipse of August 11, 1999
Presented
February 1, 2000
Abstract. The total solar eclipse of 11
August 1999 was observed by the joint expedition of Georgian and Turkish
astronomers. The aims of observations and the description of the used
observational equipment are presented. Observational material is characterized.
Some preliminary results of treatment are given.
Key words: corona, total solar eclipse.
Geophysics
Z.
Kereselidze, N. Todua
On the Stability of the Magnetic Structure of the
Stagnation Zone to the Magnetosphere
Presented
by Corr. Member of the Academy T. Chelidze, December 28, 1999
Abstract. In the present work the
stability of the magnetic structure of the stagnation zone to the magnetosphere
is carried out and estimation of magnetohydrodynamic (MHD) waves spectrum in
this region is done.
Key words: stagnation zone, solar wind, magnetosphere.
Geophysics
T.
Matcharashvili, Corr. Member of the Academy T. Chelidze, V. Abashidze,
Z. Javakhishvili
Evidence for Deterministic Chaos in Earth,s Crust Tilt
Dynamics
Presented
April 4, 2000
Abstract. In the present study, in order
to make quantitative evaluation of the Earth,s crust dynamics, we have
investigated sequences of tiltmeters hourly measurement data sequence for 12
years. Considered time period includes 8 years before and 4 years after
beginning the filling of the Engouri power station reservoir.
It was found that Earth's crust tilt
dynamics for all considered time periods is a deterministic chaotic process,
having positive maximal Lyapunov exponent and low correlation dimension. It
means that the process of tilt generation is predictable, at least in sense of
their pattern. According to our results the general nonlinear characteristics
of tilt generation process has not been changed during dam building and
reservoir filling conditions.
Key words: Earth,s crust dynamics, nonlinear analysis.
Analytical Chemistry
K.
Grigalashvili, G. Supatashvili, S. Mamulia, T. Ptskialadze
Extraction- Photometric Determination of Zinc by
4-(2-pyridilazo)-Resorcinol
Presented
by Member of the Academy G. Tsintsadze, April 11, 2000
Abstract. The conditions for
extraction-photometric determination of zinc are established using
zinc-4-(2-pyridilazo)-resorcinol-ethanol associate. In the presence of ethanol
sensitivity and selectivity of the method significantly increase compared with pyridilazoresorcinol method. For the separation of interfering ions
diantipyrilmethane (DAM) was applied. The combined extraction-photometric
method is elaborated to separate interfering ions, concentrate and determine
microamounts of zinc.
Key words: extraction-photometric method, zinc,
4-(2-pyridilazo)-resorcinol (PAR).
General
and Inorganic Chemistry
Corr.
Member of the Academy A. Shvelashvili , M. Tskitishvili , M. Kvitsiani,
N. Zhorzholiani , I. Beshkenadze, E. Miminoshvili, K.Amirkhanashvili
Synthesis and Crystal Structure of MgF2 .11H2O
Presented
november 30, 1999
Abstract. The roentgeno-structural analysis
of MgF2.11H2O crystal structure, where F is the deprotonated molecule of
sulfadimetoxine is synthesized and studied. It is established that the inner
sphere of the complex contains six water molecules that determine the
octahedral structure of the compound, and the outer sphere of the complex
comprises sulfadimetoxine molecules [ Mg(OH2)6]F2 . 5H2O.
Key words: coordination compounds, sulfadimetoxine, synthesis,
roentgenostructure.
Organic
Chemistry
A.Zirakishvili,
N.Makharashvili, Sh.Samsoniya
Synthesis of Benzimidazole Substituted
Phenylhydrazones on the Basis of the Acetophenone Derivatives
Presented
by Corr. Member of the Academy L.Khananashvili, December 28, 1999
Abstract. On the basis of
p-aminophenylbenzimidazole new hydrazones are synthesized. Influence of
electronoaccepting and electron-donating groups on chemical and spectral
properties of the obtained compounds is investigated.
Key words: benzimidazole, acetophenone, condensation, hydrazone,
diazotation, o-phenylenediamine.
Physical
Chemistry
D.
Ioseliani, R. Zedgenidze, I. Borisovitch, G. Antoshin, G. Chkheidze
Catalytic Activity of Iron Containing Y, L, M, and E
Zeolites in Oxidation Reaction of Carbon Oxides by Nitrogen Oxide
Presented
by Member of the Academy T. Andronikashvili, December 28, 1999
Abstract. The Fe-zeolites activity in the
CO+NO reactions was researched with regard to applied methods of iron input and
preliminary processing of the samples. Based on the conducted works there were
made the following conclusions. The Fe-zeolites prepared by (Fe(CO)5) vapor
adsorption method are more active than those of modified by ion exchange method; Analysis of X-ray-photo-electronic (XPE) spectra revealed that Fe cations
with intermediate valent state are more active than those with high oxidation
number. The preprocessing of Fe-zeolites in H2 area causes increase of
samples catalytic activity.
Key words: ion exchange, adsorption, X-ray photoelectronic
spectroscopy, thermal processing, satelite line, effective charge of cations.
Physical
Chemistry
Ts.Goliadze,
G.Makharadze, G.Supatashvili, A.Khaiauri
Adsorption of Cu(II) and Mn(II) in Humic Acids
Presented
by Member of the Academy G.Tsintsadze, November 2, 1999
Abstract. Kinetics of adsorption of Cu(II)
and Mn(II) in humic acids was investigated. It was established that adsorption
began immediately and reached constant value after ten minutes. It was revealed
that adsorption did not proceed at pH=1. Adsorption was initial at pH=2 and
reached maximum value at pH³5. It has been suggested that adsorption proceeds by ion-exchange
mechanism, and also because of complexation. Adsorption capacity equals 12 and
35 mg/g for manganese and copper, respectively.
Key words: adsorption, humic acid, manganese, copper.
Electrochemistry
G.
Agladze, N. Koiava, N. Nioradze, N. Pashalishvili
The Influence of Mass Transport on the Chloride-Ion
Oxidation in the Three-Dimensional Electrodes
Presented
by Corr. Member of the Academy J. Japaridze, November 16, 1999
Abstract. The influence of particles
diameter of packed bed electrode and solution flow rate on the chloride-ion
oxidation in the three-dimensional electrode was investigated. The mass transfer
characteristics of electrochemical system were calculated and the intensity of
chloride-ion oxidation on the bases of these parameters was determined.
Key words: three-dimensional electrode, space-time yield, mass
transport coefficient.
Geology
M.
Otarashvili, V. Iaroshevich
The Source for Producing Water, Sulfur and Carbon in
the
Mineral-Forming Fluids of the Kafan Ore Region
Presented
by Corr. Member of the Academy G. Zaridze, December 28, 1998
Abstract. Isotopic studies carried out
within the Kafan ore field determined that deep-seated magmatogenic source took
part in the formation of mineral-depositing fluids.
Key words: meteoritic standard, generation, fluid, magmatogenic.
Geology
V.
Gugushvili, I. Hart, M. Natsvlishvili, R. Akhvlediani
Origination of the Gold Mineralization and Wall Rock
Alteration at the Sakdrisi Deposit (Bolnisi Mining District)
Presented
by Corr. Member of the Academy M.Topchishvili, February 1, 2000
Abstract. The new prospecting criteria and
age of gold origination is determined. The chemical composition of fluid
inclusions from the mineralized zones indicates, that gold generation is
related with alkaline carbonic acid solutions. The optimal conditions for gold
mineralization coincides with the hydrothermal activity, which caused the
formation of siderite-hydrobiotite bearing rocks formed at 240-250 0C.
Key words: gold mineralization, hydromica, siderite.
Geology
B.
Tutberidze
Evolution and Geodynamic Conditions of the
Manifestation of Neogene-Quaternary Volcanism of the Caucasian Segment within
the Bounds of Georgia
Presented
by Member of the Academy I.Gamkrelidze, November 24, 1999
Abstract. Geological and geophysical
specific signs of the Transcaucasian transverse uplift and the peculiarities of
magmatism revealed in it refer to the riftal origin of the uplift.
Key words: volcanism, Georgian block, Neogene-Quaternary,
andesite, Pleistocene, calcalkaline.
Computer
Sciences
N.
Kutsiava
Determination of Some Reliability Indices of the
Designed
Chemical Plant Equipment
Presented
by Corr. Member of the Academy A. Prangishvili, December 29, 2000
Abstract. Here is discussed the method of
calculation of coefficient and function of readiness of high unit power
chemical plant subjected to two types of failures (wear-out and random) and
detected in the moment of occurence by a reliable system of continuous control.
Key words: failure, renewal, reliable index, control.
Soil
Science
Corr.
Member of the Academy T.Urushadze, N.Mosidze,A.Urushadze
Humus State of the Alluvial Soils of the Mtkvari River
Valley
Presented
March 14, 2000
Abstract. Using one and the same scheme of
investigation the main characteristics of the alluvial soils of the Mtkvari
River Valley have been studied and some valuable information about their humus
state has been obtained.
Key words: alluvial soils, humus, fulvic and humic Acids.
Agricultural
Chemistry
J.Tsotsonava
Effects of Long-Term Application of Potassic
Fertilizers on the Expansion of Mandarine Root System
Presented
by Member of the Academy G.Tsintsadze, December 5, 2000
Abstract. We have established that all
forms of potassic fertilizers (KCl, K2SO4 and K2SO4.MgSO4) have a positive
action on growth and expansion of the root system of mandarine Citrus
unschiu L. According to our data K2SO4.MgSO4 is the most preferable among
different forms of potassic fertilizers.
Key words: potassic fertilizers, mandarine.
Plant
Physiology
I.Matitashvili,
E.Ketskhoveli
Determination of Carotenoids Content in Spontaneous
Wheat-Rye Amphidiploids and their Parental Forms
Presented
by Corr. Member of the Academy N.Nutsubidze, August 8, 2000
Abstract. Determination of carotenoids
amount indicates that all the researched triticales overcome parental forms by
the number of pigments in flag-leaf, awns and ear scales in all phenological
phases. Spontaneous wheat-rye amphidiploids accumulate and preserve till the
end of vegetation more carotenoids than their parental forms, especially
hybrids of sixth generation F6'2 (T.paleocolchicum x S.kuprijanovii).
Key words: triticale, carotenoids, flag-leaf.
Botany
I.
Murvanishvili
Micromycetes alongside the Oil Pipeline in Saguramo
State Reserve
Presented
by Corr. Member of the Academy G. Nakhutsrishvili, November 26, 1999
Abstract. Micromycetes - disease causative
fungi for major participants of the oak forests and xerothermic shibliak type
shrubwoods are studied along the oil pipeline section corridor. Biocorrosion
bioagents are given attention as well.
Key words: oil pipeline, micromycetes, host plants, biocorrosion
agents.
Botany
L.Kobakhidze,
Z.Gamtsemlidze, Ts.Mikatadze-Pantsulaia, M.Eristavi
Sexual Reproduction of Lilium Szovitsianum Fish.et
Ave-Lall.(Liliaceae)
Presented
by Corr.Member of the Academy G.Nakhutsrishvili, December 21, 1999
Abstract. Proceeding consistent phases of
growth, development and flowering of Lilium szovitsianum Fish. et
Ave-Lall. spread in the Caucasian highlands and influenced by strong
anthropogenic force was studied. Processes of pollination - fertilization, seed
formation, potential and real production were also investigated.
Key words: L. szovitsianum, ovules, flowers, pollen,
ovary, endosperm, seed.
Genetics and Selection
J.
Kapanadze, I. Guledani, G. Okruashvili
Growth and Development of Plants at High CO2 Concentrations
Presented
by Corr. Member of the Academy D. Jokhadze, May 23, 2000
Abstract. At high CO2 concentrations
(0.09%) during vegetation period Cucumber(Cucumis sativus L.) was
damaged by 5 points, fruits of Ecballium elaterium (L.) A. Rich became bitter.
No morphological damages were marked in cases of carrot and beet. But
tetraploid varieties of the latters produced 1.5 times greater vegetative mass
and revealed higher tolerance than their diploid forms.
Key words: global warming, permanent intervention, CO2
utilization.
Human
and animal physiology
N.
Doreulee, M. Datunaishvili, Member of the Academy T. Ioseliani, H. Haas
Excitability of Striatal Neurones is Changed in eNOS
Mutant Mice
Presented
November 9, 1999
Abstract. Synaptic excitability of striatal
neurones was tested on slices from mice, where eNOS was genetically disrupted.
It was found that the threshold for the extracellularly recorded field
responses to cortical stimulation were significantly lower in slices from eNOS-/-
mice (68 ± 9mA)
as compared with wild type animals (107 ± 14mA). At the same stimulation strength the field
potential amplitude was significantly higher in slices from eNOS-/- mice. Bath
application of sulpiride, an antagonist of D2 dopaminergic receptors, but not
N-nitro-L-arginine (NL-Arg, blocker of NOS) mimicked the result of eNOS gene
knock-out, indicating that deficit of eNOS during development may affect
glutamatergic transmission in corticostriatal pathway through the dopaminergic
modulatory system.
Key words: eNOS, knock-out mice, striatum.
Human
and animal physiology
M.
Khomeriki, N. Lomashvili, M. Malania, M. Sharikadze
The Georgian System of the Terms of the Basic Colours
and
E. Hering's Theory of Colour Opponency
Presented
by Member of the Academy T. Oniani, October 26, 1999.
Abstract. Using list experiment it is
ascertained that in the Georgian language the terms of the six basic colours
red, yellow, green, blue, black and white are singled out. This must be a
linguistic assertion of E.Hering's theory of colour opponency.
Key words: colour terms, Georgian language, Herin's theory.
Human
and animal physiology
I.Intskirveli,
M.Roinishvili
Behavioral Evidences for Color Constancy in the
Guppies
(Poecilia reticulata)
Presented
by Member of the Academy T.Ioseliani, December 28, 1999
Abstract. Direct behavioral experiments
have shown that the guppies (Poecilia reticulata) possess a constant
color perception ability. Unless functioning of this mechanism of the color
vision, it would be impossible to execute the color-recognition oriented
behavioral acts, such as courtship behaviors, mating preference, etc.
Key words: color constancy, fish, guppy, behavior.
Human and animal physiology
I.Gvilia,
Member of the Academy T.Oniani, N.Darchia, E.Chijavadze,
N.Dabrundashvili,
I.Rukhadze
Influence of Relatively Short-Lasting Total Sleep
Deprivation on the Structure of Sleep-Waking Cycle in the Rats
Presented
November 16, 1999
Abstract. The data presented in the paper
indicate that as a result of relatively short-lasting total sleep deprivation
the acute deficit of the slow-wave sleep only develops in the rats, and its
post-deprivation compensation reveals itself in the sharp rebound.
Key words: rats, total sleep, slow-wave sleep, paradoxical
sleep, rebound, deprivation.
Human
and Animal Physiology
G.Todua
Electrophysiological Study of Direct Input from
Lateral Nucleus to Central Nucleus of the Amygdaloid Complex
Presented
by Member of the Academy T.Oniani, December 28, 1999
Abstract. Single unit responses were
recorded extracellularly from central nucleus (CN) of the amygdaloid complex in
cats, immobilized with ditiline. Lateral nucleus (LN) stimulation evoked
responses in 52.27% of the units population tested. The majority of CN units
were excited. Stimulation of LN activated nuclear cells orthodromically and
transsynaptically, as judged from fluctuation in the latency and failure in
response to high frequency stimulation. Among activated units 44.18% responded
short latency. The data support the existence of a monosynaptic pathway from LN
to lateral part of the CN.
Key words: lateral nucleus (LN), central nucleus (CN), unitary
response, latency.
Human
and Animal Physiology
I.
Kobaidze, Member of the Academy T. Ioseliani, L. Khuchua, E. Saralidze
On the Bioaminergic Innervation of the Visual System
Presented
December 28, 1999
Abstract. The effect of electric
stimulation of Locus coeruleus and the raphae dorsal nucleus on the visual
system has been studied. In most cases Locus coeruleus evokes activation of
neiron discharges and increases the amplitude of the primary responses,
especially in a negative phase. Dorsal nucleus of the raphae has a
contradictory effect.
Key words: visual system, Locus coeruleus, gineculatum
laterales, raphae nucleus.
Human
and animal physiology
Ts.
Suknidze
Experimental Analysis of some Manifestations of Brain
Self-Regulatory Activity
Presented
by Member of the Academy M.Khananashvili, October 19, 1999
Abstract. The experiments were conducted
in dogs, in an experimental room, in the conditions of free behavior using the
method of delayed reactions to sound conditioned signals. In different
experiments the conditions were changed: complication or simplification of the
task (delayed reactions), forced limitation of movement, use of cavinton
(preparation improving brain blood circulation).
The research reveals that self-regulation
of the brain tonus, its homeostasis occurs through proprioceptive impulsation
observed during motor activity.
The tests in which cavinton was used, have
shown that the preparation causes rapid restoration of the brain functional
state (tonus), that is why its use intensifies brain self-regulatory activity.
Key words: self-regulation, delayed reaction, motor activity,
proprioceptive impulsation.
Biochemistry
I.Chkhikvishvili
, G.Kharebava
Quantitative Determination of Chlorogenic Acid by HPLC
in Different Varieties of Apples
Presented
by Corr. Member of the Academy N.Nutsubidze, October 26, 1999
Abstract. The content of chlorogenic acid
in fruits of six commercially available Georgian apple varieties was studied by
HPLC. Among different kinds of apple fruits the Georgian variety of red apple
"Kekhura" accumulates the greatest amount of chlorogenic acid, which
makes 2.61mg per 100ml
of juice and corresponds to 0.032% in the pulp.
Key words: apple fruits, chlorogenic acid (CGA), HPLC.
Biochemistry
E.Chikvaidze,
I. Kirikashvili, T. Gogoladze, L. Chikvaidze
Ternary Complex Albumin - Mn(II) - Bilirubin and
Investigation of Gallstones by ESR
Presented
by Corr. Member of the Academy N. Aleksidze, December 15,1999
Abstract. Paramagnetic consistence of
gallstones has been studied by ESR method. It is shown, that in black and brown
pigment stones, basically the ESR signals from the Cu(II) and Mn(II) complexes,
also the free radical one from bilirubin are observed. In cholesterol
gallstones only the freeradical signal is observed. It is suggested that in the
formation of gallstones the metalcomplexes could be important.
Key words: albumin-Mn(II)-bilirubin complexes, ESR method,
jaundice, gallstones
Biochemistry
A.Kalandiya,
M.Vanidze, S.Papunidze, I.Chkhikvishvili, A.Shalashvili
Flavonols from Chinese Actinidia (Actinidia
chinensis Planch.) Fruits
Presented
by Corr.Member of the Academy N.Nutsubidze, September 9, 1999
Abstract. Flavonols from fruits of chinese
actinidia (Actinidia chinensis Planch.) cultivated in Georgia
have been studied. By the methods of polyamid and silicagel column chromatography
kaempferol-3-L-rhamnoside (afzelin), kaempferol-3-D-glucoside (astragalin),
quercetin-3-L-rhamnoside (quercitrin), quercetin-3-D-glucoside (isoquercitrin)
and quercetin-3-D-gluco-L-rhamnoside (rutin) were isolated and identified.
Their identification was carried out by UV spectroscopy and physicochemical
methods.
Key words: flavonols, fruits, Actinidia chinensis Planch.
Microbiology
and Virology
L.Amiranashvili,
M.Buadze, T.Tsotsoria, N.Gagelidze, L.Thinikashvili, E.Khachapuridze,
G.Daraselia
Characterization of Peptidolipids in Mycobacteria and
Rhodococci
Presented
by Corr. Member of the Academy M.Gordeziani, November 2, 1999
Abstract. Peptidolipid composition of
mycobacteria and rhodococci was studied. It was established, that peptidolipids
amount towards dry biomass and total lipid fraction varies in wide range - from
0.7 to 9.4% and 7 - 38.6%, correspondingly. Similarity coefficients between the
species and the strains of one species in mycobacteria and rhodococci were
counted with regard to componental composition of peptidolipid fractions and
the quantitative content of each component. Taxonomic dendrogram was drawn on
the basis of the obtained similarity coefficients. The possible usage of
peptidolipid composition as one of the chemotaxonomic criterions in systematics
of mycobacteria and rhodococci was established.
Key words: mycobacteria, rhodococci, peptidolipids, similarity
coefficient, chromatographic mobility, taxonomic dendrogram.
Microbiology
and virology
Z.
Lomtatidze, T. Shiukashvili, G. Aneli, K. Mamulashvili
Fatty Acids of Cell Wall Lipids of some Actinomyces
Presented
by Corr. Member of the Academy M. Gordeziani, November 9, 1999
Abstract. The qualitative content of total
lipids and fatty acids of cell wall lipids of some Actinomyces have been
studied. As it has been established, the investigated Actinomyces differ by
studied indices, which we assume is responsible for their stability to
silicoorganic substances.
Key words: Actinomyces, cell wall, lipid, saturated fatty acid,
unsaturated fatty acid, coefficient of saturation.
Microbiology
and virology
L.Basilashvili,
M.Kikvidze, M.Bagalishvili, Corr. Member of the Academy N.Nutsubidze
Effect of Azospirillum on the Growth and Supply
with Nitrogen of Zea mays
Presented
October 5, 1999
Abstract. The effect of Azospirillum on
different sorts of Zea mays has been studied. It was revealed that
inoculation with Azospirillum increased crop capacity of plants. The
best results were obtained with nitrogenous fertilizer in low dose (50 kg of
nitrogen per ha), that increased the number of Azospirillum on the plant
roots and its nitrogen-fixing activity. High dose of nitrogenous fertilizer
(200 kg per ha) negatively affected Azospirillum and its nitrogenous
activity resulted in decreasing of crop capacity of plants.
Thus, the low dose of nitrogen stimulates
plant growth and metabolism and it also promotes the association of bacteria
with host plants. The effect of inoculation is intensified due to the
association.
Key words: Azospirillum, nitrogen fixation,
nitrogen-fixing activity, growth of Zea mays, nitrogenous fertilizer.
Microbiology
and virology
M.
Gurielidze, I. Khokhashvili, D. Pataraya, T. Devdariani
Physico-Chemical Characteristics of Antimicrobial
Substances Produced by Streptomyces sp. 114 Strain
Presented
by Member of the Academy G.Kvesitadze, October 12, 1999
Abstract. Actinomycetes widely spread in
southern region of the Caucasus have antagonistic properties against
phytopathogenic fungi - Rhizoctonia sp., Fusarium solani, F.
oxysporum. Among actinomycetes-antagonists the highest antimicrobial
activity was found in Streptomyces sp.114 strain, isolated from thermal
water of Khobi, Georgia. Antimicrobial substance from this strain has exogenic
as well as endogenic nature. It is characterized by activity in wide range of
pH indices (pH 2-10) and by thermostability, hydrophility, resistance to
oxygen.
Key words: actinomycete-antagonists, phytopathogenic fungi,
antimicrobial substance, extraction of antimicribial substance.
Microbiology
and Virology
N.
Ramishvili, M. Jgenti, M. Samadashvili, G. Badridze
Influence of Inoculation and Different Doses of
Mineral Nitrogen on Soybean Productivity
Presented
by Corr. Member of the Academy N. Nutsubidze, December 7, 1999
Abstract. The affect of different doses of
inorganic nitrogen and local strains of nodule bacteria separately and together
in field and sand cultures on soybean productivity and assimilates transport
has been studied. It was revealed, that inoculation with different strains of Rhizobium
japonicum positively affected plant development and yield structure. Also
positive results were obtained while combining low or middle doses of nitrogen
with bacteria.
Key words: mineral nitrogen, inoculation, photosynthesis,
assimilates transport, nitrate reductase, productivity, soybean.
Zoology
Corr.
Member of the Academy I. Eliava, M. Kuchava
Labronemella georgiensis sp. nov. (Nematoda, Dorylaimida) from Eastern
Georgia.
Presented
March 14, 2000
Abstract. The new soil nematode species
from order Dorylaimida (Nematoda) is described. The measurements
of females and males are given. The Key of species genus Labronemella (based
on Andrassy, 1985) is proposed.
Key words: Nematoda, Labronemella, Odontostil,
supplement.
Cytology
M.
Labadze
Some Ultrastructural Indices of Oligodendrocytes of
Dog's Spinal Cord and Spinal Ganglia
Presented
by Corr. Member of the Academy T. Dekanosidze, December 9, 1999
Abstract. Two main forms of oligodendrocytes those with osmophilic and light cytoplasm have been revealed
by electron microscopy.
Key words: oligodendrocytes, astrocytes, microgliacytes,
blood-neuronal interrelations.
Experimental
Medicine
M.
Janiashvili, T. Matcharashvili, G. Alpaidze, Z. Abalaki
Analysis of Fine Structure of Heart Rate Variability
in Subjects with Hypertension Using Wavelet Transformation
Presented
by Member of the Academy T.Oniani, December 28, 1999
Abstract. In this work we have used
linear tests of time series analysis for evaluation of further details of
temporal variability of human heart at different stages of hypertension. We have
used the wavelet transformation to reveal structure in the R-R interval
sequences localized to a particular time scale and temporal position. The
obtained results provide evidence that despite similarity of statistical
properties and distribution in frequency domain the fine structure of R-R
intervals distribution in time - frequency domain is quite different in healthy
and hypertension groups.
Key words: heart rate variability, cardiology, wavelet
transformation.
Experimental
Medicine
Z.
Demetrashvili, R. Magalashvili, E. Rapava, N. Tkhilava, L. Labauri
Changes Peculiar to Acute Appendicitis of Erythrocytes
Surface under the Action of Lectin LPM40-80
Presented
by Corr. Member of the Academy T. Dekanosidze, August 23, 1999
Abstract. Peculiarities of the kinetics of
erythrocytes lysis have been studied in 45 patients diagnosed with acute
appendicitis. Among them are 25 cases of destructive appendicitis and 20 of
catarrhal. The alterations marked in erythrocytes membrane are clearly observed
by adding lectin LPM40-80 and differ from each other during catarrhal and
destructive forms. The obtained results can be used in diagnostics and
post-operative period in order to evaluate the adequacy of the treatment.
Key words: acute appendicitis, erythrocyte, lectin.
Palaeobiology
I.
Shatilova, L. Rukhadze, N. Mchedlishvili, M. Kipiani
On Stratigraphical Subdivision of Middle Pontian
Deposits of Western Georgia Based on the Pollen Data
Presented
by Member of the Academy L. Gabunia, September 6, 1999
Abstract. New pollen records from the
Middle Pontian deposits of Western Georgia are cited. A proposed subdivision of
pollen zones and subzones is based on the development stages of vegetatation
and climate restored with the landscape-phytocoenotical method.
Key words: palynology, Middle Pontian, Western Georgia,
vegetation, climate, stages of development, pollen zones.
Ecology
S.Lashkareishvili,
L.Tsiskarishvili, M.Tsiskarishvili
Plankton Primary Production of Tkibuli Reservoir
Presented
by Corr. Member of the Academy I.Eliava, April 18, 2000
Abstract. We report on plankton primary
production (A and SA) and destruction (R and SR) seasonal dynamics of Tkibuli water pond. As it is
apparent A and R are maximum in summer and minimum in late autumn and winter.
In the upper layer of the water under the solar radiation the process of
photosynthesis reduction takes place. According to SSA-s quantity the Tkibuli water pond belongs to the
type transforming from mezotrophic phase into law eutrophic one.
Key words: phytoplankton, photosynthesis, primary production and
destruction, transformation.
Pedagogy
N.
Makaradze
Educational and Teaching Hypothetic Content and its
Formation Principles in Elementary School
Presented
by Corr. Member of the Academy G.Sharadze, January 30, 2000
Abstract. Scientific principles of
formation of elementary school teaching and educational content and standard documents
defining this content on the first stage of the basic education have been
discussed.
Key words: content of education, state educational standard,
teaching plan, invariant and variant blocs.
History
G.Guledani
Israel and Occupied Territories - The Analysis of
Delayed
Dialogue Factors
Presented
by Member of the Academy K. Tsereteli, November 16, 1999
Abstract. The article studies Jewish
state's regional policy shift towards the Military Power Factor, Arab reaction
to it and impossibility of peace negotiations after the 1967 June war.
Key words: Six Day War, peace process, occupied territories,
Middle East.
History of Art
S.Kasyan
Mensural Rhythm as Characteristic Phenomenon of ars
nova
Presented
by Corr.Member of the Academy P.Zakaraya, June 28, 1999
Abstract. We have studied the
peculiarities of philosophic and aesthetic category of identity in mensural
system ars nova. It was established that the leading principle of
mensural system is identical correlations.
Key words: mensural system, motet.
Philology
M.Iamanidze
About One of the Essays by Charle de Payssonnel
Presented
by Corr.Member of the Academy G.Sharadze, December 15, 2000
Abstract. New information about Georgia is
received from earlier unknown essay of French lawyer, archaeologist and political
figure of XVIII c. Charle de Payssonnel. The essay has been first translated
into Georgian.
Key words: travelling, oriental countries, France, Georgia,
Persia.
Philology
G.Meskhi
Speech Leitmotifs in "Rheingold" by Richard
Wagner
Presented
by Member of the Academy K. Tsereteli, August 3, 1998
Abstract. Along with musical leitmotifs
found in Wagner's opera librettos, the so-called "speech leitmotifs"
are also observable. Their study shows Wagner as a writer.
Key words: speech leitmotifs, composite consonants, occult
symbol.