Volume 171 number 3
The Mayer-Vietoris Sequence and the Suspension Axiom for Partially-Continuous Singular Cohomology
Presented by Member of the Academy N. Berikashvili, December 21, 2004
ABSTRACT. The exactness of the Mayer-Vietoris sequence and the suspension axiom are proved for partially-continuous singular cohomology, when q³2, a space is metrizable and a group of coefficients is ANR. © 2005 Bull. Georg. Acad. Sci.
Key words: topological space, cohomology, exact sequence.
On some Properties of the Conjugate Functions in
Presented by Member of the Academy L. Zhizhiashvili, December 21, 2004
Abstract. In the given work the direct estimations are received for the partial moduli of continuity of the conjugate functions of many variables in the space . Exactness of received estimations are established by corresponding examples. © 2005 Bull. Georg. Acad. Sci.
Key words: conjugate function, modulus of continuity, Zygmund's condition.
On the Statement of F. Lukács
Presented by Member of the Academy L. Zhizhiashvili, December 12, 2004
ABSTRACT. A theorem of Ferenc Lukács determines the jumps of a periodic Lebesgue integrable function f at each point of discontinuity of first kind in terms of the partial sums of the conjugate series to the Fourier series of f. The aim of this note is to prove an analogous theorem in terms of the generalized Cesáro (C, an) means. © 2005 Bull. Georg. Acad. Sci.
Key words: Lebesgue integral, Cesáro (C, an) means.
Weighted Estimations for the Hardy-Littlewood Maximal Function in Lebesgue Spaces with Variable Exponent
Presented by Member of the Academy L. Zhizhiashvili, February 1, 2005
ABSTRACT. We consider the generalized Hardy-Littlewood maximal operator Mf on Lebesgue spaces with variable exponent. We give a necessary and sufficient condition for the continuity of Mf:Lp(t ) ® , when Hardy-Littlewood maximal operator M is continuous on Lp(t) and Lq(t). © 2005 Bull. Georg. Acad. Sci.
Key words: Musielak-Orlicz spaces,generalized Lebesgue spaces, maximal function, Muckenhoupt classes.
A. Elashvili, G. Khimshiashvili
Hypersurface Singularities and Solvable Lie Algebras
Presented by Member of the Academy N.Berikashvili, February 15, 2005
ABSTRACT. We establish that the analytic isomorphism class of a simple hypersurface singularity is determined by the Lie algebra of derivations of its moduli algebra if the dimension of the latter algebra is not less than 6. We also calculate the indices of arising solvable Lie algebras and show that they possess maximal commutative polarizations. © 2005 Bull. Georg. Acad. Sci.
Key words: isolated hypersurface singularity, moduli algebra, derivation, vector field, index of Lie algebra, maximal commutative polarization.
L. Zivzivadze, E. Japaridze
On Estimation of Exactness in Conformal Mappings of Neighbouring Domains
Presented by Corr. Member of the Academy R.Bantsuri, February 22, 2005
ABSTRACT. Difference between the boundary values of conformally representative functions on the canonical domains of the doubly-connected neighbouring *domains is estimated. Estimation is made with respect to the e-neighbourhood. © 2005 Bull. Georg. Acad. Sci.
Key words: conformally representative function, neighbouring domains.
On the Limit Distribution of the Quadratic Deviation of the Generalized Kernel-Type Estimator of a Distribution Density
Presented by Corr. Member of the Academy E. Nadaraya, March 1, 2005
ABSTRACT. In the present paper we have established the limit distribution law of the integral quadratic deviation of the recursive kernel-type estimator of a distribution density. © 2005 Bull. Georg. Acad. Sci.
Key words: recursive estimator, empirical density, limit distribution, convergence in distribution.
G. Bareladze, Member of the Academy L. Zhizhiashvili
On Classes of Functions of Several Variables Invariant under Multidimensional Conjugation Operators
Presented March 22, 2005
ABSTRACT. A class of continuous functions of several variables is found not changing under multidimensional conjugation operators. © 2005 Bull. Georg. Acad. Sci.
Key words: classes, multidimensional conjugation operator.
On the Holonomic Parametrizations of Knots
Presented by Member of the Academy N.Berikashvili, April 27, 2005
Abstract. Holonomic parametrizations of knots were introduced by Vassiliev in 1997, who proved that each knot type had a holonomic parametrization. In this work, we introduce an algorithm to calculate the functions for the holonomic parametrization. Further, we show that the result of Vassiliev can be easily derived from the so-called Arkaden-Faden-Lage (AFL) introduced by Reidemeister and developed by Hotz. © 2005 Bull. Georg. Acad. Sci.
Keywords: knots, holonomic parametrizations, AFL-representation of knots.
A. Kvitashvili, R. Tkhinvaleli, I. Javakhishvili
Electricity Demand Prognosis by Neuron Network
Presented by Corr. Member of the Academy A. Prangishvili, January 11, 2005
ABSTRACT. The presented Artificial Neuron Network is oriented to make such a time series forecast as it is electricity purchase, selling and loss. The way of an ANN,s model building is considered based on multiple cyclic iterative procedure to minimize the Root Mean Squared (RMS). © 2005 Bull. Georg. Acad. Sci.
Key words: neuron network, time series, forecast, transform.
A. Chaduneli, M. Zakradze, Z. Tabagari
A Computer Simulation of Probabiliistic Solution to the Dirichlet Plane Boundary Problem for the Laplace Equation in Case of an Infinite Plane with a Hole
Presented by Member of the Academy M. Salukvadze, January 27, 2005
ABSTRACT. The algorithm of a probabilistic solution to the plane Dirichlet problem is given for the Laplace equation in the case of an infinite plane with a hole. A method of a computer simulation of diffusion process based on "white noise" is offered. It is used conformal mapping. For illustration an example is considered. © 2005 Bull. Georg. Acad. Sci.
Key words: Dirichlet problem, probabilistic solution, computer simulation.
Optimal Membership Function's Probabilistic Model for Fuzzy Differential Equations
Presented by Member of the Academy V. Chavchanidze, November 9, 2004
Abstract. At modeling of the real systems (which do not contain uncertainty or stochastic uncertainty) frequently we come to differential equations. Theory of differential equations is deeply and widely advanced. If at each concrete problem we use powerful numerical method, then the model development does not represent with principle complexity itself.
It is known that except of stochastic uncertainty the other types of uncertainties exist. There is an opportunity to expand an area of use for differential equations even in those cases when parameters determining differential equations contain uncertainty of new types and therefore there is no opportunity to pose the classical problem. We are offering modeling of these situations with the help of new concept canonically conjugated fuzzy subset. © 2005 Bull. Georg. Acad. Sci.
Key words: fuzzy sets, fuzzy differential equations, optimal membership functions.
The Canonical Relaxation Polytope of the Linear Ordering Problem
Presented by Member of the Academy V. Chavchanidze, February 8, 2005
ABSTRACT. The canonical relaxation polytope of the linear ordering problem is studied in this article. Basic characteristics are investigated for the different classes noninteger vertices of the relaxation polytope. © 2005 Bull. Georg. Acad. Sci.
Key words: discrete optimization, linear ordering problem.
Corr. Member of the Academy R. Khurodze, R. Kakubava
Some Mathematical Aspects of Dependability Planning of Technical Systems
Presented April 5, 2005
Abstract. In the work the analysis of new tendencies in the mathematical theory of reliability is made within the framework of recommendations E.862 of the International Telecommunications Union (ITU). New results received at the Georgian Technical University for recent years have been considered. © 2005 Bull. Georg. Acad. Sci.
Key words: failure, renewal, replacement, closed queueing system.
G. Gamtsemlidze, K. Gamkrelidze, M. Mirzoeva, G. Shonia
Study of Residual Magnetization of High Temperature Ceramic YBa2Cu3O7-x Superconductor in Alternating Magnetic Field
Presented by Member of the Academy T. Sanadze, December 28, 2004
Abstract. We have observed dispersion of residual magnetization values of a magnetized in alternating magnetic field high-temperature ceramic YBa2Cu3O7-x superconductor. Difference between peak values of residual magnetization obtained in alternating and constant magnetic fields was observed. Analogical result was also found at demagnetization of the sample in alternating and constant magnetic fields. Lesser residual magnetization at magnetization and demagnetization in an alternating magnetic field compared with the same values obtained in a constant magnetic field is explained by Bean's critical state model, which considers increase of a surface barrier. © 2005 Bull. Georg. Acad. Sci.
Key words: superconductor, magnetization, polycrystal, granule.
L. Berdzenishvili, Z. Melikishvili
Small Angle Light Scattering by Biological Objects
Presented by Member of the Academy T. Sanadze, December 27, 2004
Abstract. In this paper the small angle laser radiation scattering by the particles of different shape and size is analyzed.
Experimental results and theoretical calculations show that after ejection from bacteriophage DNA forms the scattering medium consisted of quasi-spherical elements with radius of R ~ 10l0. © 2005 Bull. Georg. Acad. Sci.
Key words: light scattering, bacteriophage, DNA network.
G. Devidze, A. Liparteliani
Large Extra Dimensions
Presented by Member of the Academy T. Kopaleishvili, January 12, 2005
ABSTRACT. The modern status of large extra dimensional (LED) approaches and highlights of their manifestation are discussed in this paper. © 2005 Bull. Georg. Acad. Sci.
Key words: extra dimensions, brane, bulk, universal extra dimension, gravity, hierarchy problem.
A. Bibilashvili, I. Kvantaliani, D. Kimeridze, Z. Samadashvili
Electron-Hole Mechanism of Formation and Transformation of Defects in MDS Structures
Presented by Member of the Academy J. Lominadze, April 19, 2005
ABSTRACT. Electron-hole mechanism of defect formation and transformation in MDS (metal-dielectric-semiconductor) structures based on quantum state changes of electrons, which take part in chemical bonds between atoms is considered. Chemical bond strength depends on electron distribution between bonding and antibonding orbitals of atoms, or defects. This distribution may change by injection of electrical current carriers, light, temperature or influence of electric and magnetic fields. In the presence of defects, probability of antibonding quasiparticles to be close to structure defects is higher than that close a regular atoms. In MDS structures, at the interface of semiconductor exist defects, where hemical bonds are weaker and structure of the defect changes easier. © 2005 Bull. Georg. Acad. Sci.
Key words: MDS-structures, chemical bonds, structural defects.
Gravitation and Differential Pseudoquaternion
Presented by Corr. Member of the Academy A. Khelashvili, March 22, 2005
ABSTRACT. The formalism of the pseudocomplex numbers in media field  and corresponding space *K is applied for construction the pseudoquaternion in so called proper co-ordinates that gives us possibility to consider the four dimension hyperbola with pseudometric norm and an affinity transformation of the pseudoquaternion. So, for weak gravitational fields we can receive an analogy of Schwarzschild formula, that have an interesting property - two pairs of orthogonal co-ordinates. © 2005 Bull. Georg. Acad. Sci.
Key words: pseudoquaterium, media field, pseudometric, Schwarzschild formula.
S. Gotoshia, L. Gotoshia
Resonance Raman Spectroscopy of Semiconductors a-HgS and GaP
Presented by Member of the Academy T. Sanadze, February 10, 2005
ABSTRACT. Resonance Raman scattering in semiconductors a-HgS and GaP with indirect band-gap have been studied with the aid of a dye laser as well as with excitation of discrete wavelengths of argon, Krypton, IAG:Nd, helium-neon and helium-cadmium lasers. It turned out that the resonance in GaP takes place via two mechanisms: very weak indirect gap and more intense direct gap mechanisms. The resonance takes place in a-HgS, which differs from GaP in structure; this resonance is a little weaker than the direct gap resonance in GaP. In our
opinion, the weak direct transition too contributes to the resonance mechanism. © 2005 Bull. Georg. Acad. Sci.
Key words: Resonance Raman scattering, dye laser, indirect band gap.
S. Tsereteli, V. Bochorishvili, M. Makhviladze, M. Samkharadze, V. Gokieli
Variations of Cosmic Ray Intensities during the Last Several Centuries via Determination of Cosmogenic Radiocarbon Concentration
Presented by Member of the Academy J. Lominadze, April 19, 2005
Abstract. Variations of cosmogenic radiocarbon production rate, cosmic ray intensity in terrestrial atmosphere and heliospheric modulation parameters are determined during the last several centuries (1600-1950), In this study five-reservoir model was used, which fairly described geochemical cycle of carbon exchange process between the reservoirs that is confirmed by good agreement between estimated and obtained data from direct measurements. © 2005 Bull. Georg. Acad. Sci.
Key words: five-reservoir model, maunder minimum, solar activity, radiocarbon.
Z. Gogua, A. Gigineishvili, G. Iluridze, G. Rtveliashvili
Low Temperature Breaking in Semiconductors of Tetrahedral Symmetry
Presented by Member of the Academy T. Sanadze, March 19, 2005
Abstract. In this work, low temperature breaking in semiconductors of tetrahedral symmetry is considered based on the unified impurity centre model. Dependence of breaking field intensity on compensation rate, temperature and impurity atoms was found out. © 2005 Bull. Georg. Acad. Sci.
Key words: semiconductors, tetrahedral symmetry, charge carriers.
R. Kublashvili, M. Labartkava, M. Mentheshashvili,
Synthesis and Isomeric Constitution of Phenyl-L-Arabinosyl Amines
Presented February 1, 2005
ABSTRACT. The N-glycosylation of o-, m- and p- aminobenzoic acids and p-aminobenzoic acid n-butyl ester by arabinose is studied. The synthesized phenyl-N-arabinosyl amines consist of alpha and beta pyranose anomers, however, in addition, N-m-carboxyphenyl-L-arabinosyl amine and N-p-carboxyphenyl-L-arabinosyl amine contain as well the alpha furanose anomers. © 2005 Bull. Georg. Acad. Sci.
Key words: Phenyl-N-arabinosyl amines, anomers.
G. Darsavelidze, R. Esiava, E. Khutsishvili, G. Bokuchava, G. Chubinidze,
High-Temperature Annealing Effects on the Thermoelectrical Properties, Microstructure and Microhardness of Complexly Doped Si0.83Ge0.17 Alloys
Presented by Corr. Member of the Academy I. Baratashvili, June 14, 2005
ABSTRACT. We have studied the thermal heating effect (8500C) on the electrophysical properties of Si0,83Ge0,17
alloys doped by GaP and doped jointly by GaP+B. It was determined that thermal treatment at 8500C (200hrs) enhanced thermoelectrical efficiency in n-type Si0,83Ge0,17 (GaP) alloys by 26% and in p-type Si0,83Ge0,17(GaP+B) alloys by14%. The noticed changes have been analyzed according to the changes in the real structure of the materials due to thermal treatment. Experimental data concerning the influence of annealing on the microstructure and microhardness are reported. © 2005 Bull. Georg. Acad. Sci.
D. Tsagareishvili, Corr.Member of Academy I. Baratashvili, N. Nadiradze, A. Nadiradze
An Increment Method of Calculation of Melting Temperatures of Ionic Crystals
Presented November 3, 2004
Abstract. A new increment method for the calculation of melting temperatures (Tm) of binary inorganic ionic crystalline compounds has been suggested. On the basis of rather simple mathematic relationship the Tm for the majority of these compounds can be defined by the accuracy of no less than 10%. © 2005 Bull. Georg. Acad. Sci.
Key words: increment, melting temperature, binary, ionic, crystal.Key words: figure of merit, thermal conductivity, Seebeck coefficient.
L. Kartvelishvili, G. Kordzakhia, N. Kutaladze, N. Shavishvili, L. Megrelidze
Recurrence of Extreme Temperature Events in Georgia on Background of Climate Change
Presented by Corr. Member of the Academy Z.Tatashidze, May 3, 2005
Abstract. The peculiarities of changes in the extreme values of air temperature, based on long term observations are researched for Georgia. The temperature extreme data sets have been created on the basis of initial observations from 8 mountainous and lowland stations of East and West Georgia for the investigation of the recurrence of air temperature extreme magnitudes (high and low values). 10% of top and bottom values for time series were taken, as the criteria of extremes. © 2005 Bull. Georg. Acad. Sci.
Key words: extreme, recurrence, variability, climate change.
A. Okrostsvaridze, V. Kilasonia, E. Kilasonia, R. Chagelishvili
Iori Clay Deposit of Georgia and the Prospects of its Use
Presented by Member of the Academy N. Skhirtladze, April 6, 2005
ABSTRACT. The article considers clay deposit of Iori river situated in Outer Kakheti region and the prospects of its use. The deposit's geological features, its genetic type and age are also briefly described. Clay physical properties, chemical content and results of technological testing are given as well. It is proved that the clay deposit resources and its quality are satisfactory for development of the production of high quality construction bricks and other ceramic materials in this region. © 2005 Bull. Georg. Acad. Sci.
Key words: clay deposit, Neogene, Sarmatian, proluvium, sandstones.
Machine Building Science
Application of Square Transformations in the Solution of Position Problems
Presented by Corr. Member of the Academy A.Prangishvili, May 17, 2005
ABSTRACT. The problem of construction of intersection line of two surfaces of the second order has been fulfilled by means of application of square transformations. © 2005 Bull. Georg. Acad. Sci.
Key words: square transformation, surface, intersection line.
J. Dochviri, T. Kandelaki
Automatic Control of the Voltage of Synchronous Generator of the Electric Power Station with a High Loading
Presented by Member of the Academy R. Adamia, June, 2004
Abstract. Automatic control system of the voltage and the frequency of synchronous generator of the electric power station with high loading has been constructed. The functional schemes are composed: both for force electromechanical part of hydro-generator and for the regulators. The differential equations of the elements of control system are given. Mathematical model of this system as a structural scheme is constructed. © 2005 Bull. Georg. Acad. Sci.
Key words: synchronization of generators, the dynamics, control of the voltage.
Automatic control and computer engineering
Corr. Member of the Academy R. Khurodze
Analysis of the Downtime of Duplicated System with Instant Replacement
Presented March 22, 2005
Abstract. In the work reserved technical system, in which switching the reserve element on the place of refused one occurs instantly is considered. Distribution function of duration of system's non-failure operation in terms of Laplace representations is received. © 2005 Bull. Georg. Acad. Sci.
Key words: failure, serviceable element, repair facility.
New Data on Reaumuria
Presented by Corr. Member of the Academy G. Nakhutsrishvili, February 11, 2005
ABSTRACT. Unknown phytocenoses of Reaumuria alternifolia formation (Reaumurieta alternifoliae) were found and described. These are: 1. Reaumuria alternifolia + Artemisia lerchiana + Agropyron pectinatum + Ferula szowitsiana and 2. Reaumuria alternifolia + Artemisia lerchiana. They are spread on an anticlinal low range, situated in the southern part of the Vashlovani National Park (East Georgia). The designated territory belongs to the arid zone. The phytocenoses are developed on the salinized agrillaceous badlands. Their phytocenological structure is of xerophilous character.
Distribution area of the designated phytocenoses, main characteristics of their habitats, short phytocenological descriptions and complete floristic lists are presented in this paper. © 2005 Bull. Georg. Acad. Sci.
Key words: arid region, badland, phytocenosis, projective coverage, characteristic species.
N. Shakarishvili, M. Gachechiladze
Relationship Between Ovule Development and Seed Efficiency in English Yew - Taxus baccata L.
Presented by Corr. Member of the Academy G. Nakhutsrishvili, February 13, 2005
ABSTRACT. Seed efficiency as ratio of seeds to ovules depends on multiple limiting factors. Ovule development plays a central role in formation of functional seeds with viable embryos. The major causes of seed losses are early abortion of unpollinated ovules, structural abnormalities in female gametophyte and postzygotic arrest of embryo development. © 2005 Bull. Georg. Acad. Sci.
Key words: seed efficiency, ovule, female gametophyte, developmental abnormalities, Taxus.
M. Nagervadze, Z. Diasamidze, R. Khukhunaishvili, A. Diasamidze
Utilization of Protein-Antigenic Markers for Analysis of Species and Population of Presented in Adzharia Bilberry Family (Vaccinium)
Presented by Member of the Academy P. Naskidashvili, April 5, 2005
Abstract. There are four species of bilberry family (Vaccinium) presented in Adzharia. Three of them red bilberry (V. Vitis idaea), whortleberry (V. Myrtlius) and alpine bilberry (V. Uliginosum) are rarely met while caucasian bilberry (V. Arctostapylos) is widely spread and presented in the region with complex population structure.
In order to investigate a genofond of bilberry common in Adzharia, antigenic spectra of seed proteins of whortleberry (V. Myrtiius) and two populations (plane and mountain) of caucasian bilberries (V. Arctostapylos) were explored using immune-chemical methods.
The obtained results show that by the applied method, it is possible to reveal common antigenic markers as well as specific ones for the investigated species. © 2005 Bull. Georg. Acad. Sci.
Key words: bilberry, Adzharia, antigenic proteins, protein-antigenic markers.
E. Ketskhoveli, I. Chichiashvili, N. Janukashvili, N. Giorgobiani,
S. Shamtsian, N. Datukishvili
The Effect of Acid Rains on the Content of Plastid Pigments, Antioxidants and Starch in the Maize and Horse-Bean Leaves
Presented by Member of the Academy N. Nutsubidze, November 30, 2004
Abstract. The effect of artificial acidic rains on seeds (soaked in pH 3.5 and pH 5.0 solutions of sulfuric acid) and plants of maize and horse-bean sprayed with pH 2.5 solution of the same acid has been studied. Analysis of plastid pigments, antioxidants and starch revealed some changes in the quantitative characteristics of these indices, which may be stipulated by the protective reactions of the plants toward the abiotic stress. © 2005 Bull. Georg. Acad. Sci.
Key words: acid rains, plastid pigments, antioxidants, starch, maize, horse-bean.
M. Khurtsidze, T. Meladze, I. Chkhikvishvili, G. Aleksidze
Purification of Toxin Causing Malsecco Disease in Citrus and Study of its Certain Properties
Presented by Corr. Member of the Academy N. Aleksidze, February 22, 2005
Abstract. The toxin has been derived from the fungus Phoma tracheiphila that causes Malsecco disease in
plants. It was discovered for the first time that the toxin is characterized by lectinal activity. Several methods for the isolation of toxic lectin - PTL using affine chromatography, have been elaborated. On the assumption of physical-chemical characteristics of the lectin and results obtained from the model experiments, new treatment methods of the Malsecco disease is presented. © 2005 Bull. Georg. Acad. Sci.
Key words: Malsecco, toxin, lectin.
Genetics and Selection
Corr. Member of the Academy P. Naskidashvlili, Z. Putkaradze, N. Baramidze
The Effect of Biological Preparations "Asma N1"and "Asma N2" on Leaf Rugosity of Mulberry Seedlings
Presented February 2, 2005
ABSTRACT. Biological preparations "Asma N1" and "Asma N2" were tested by interspecies hybridization and on the seed obtained by clone selection of mulberry varieties Iveria and Kutaturi, some of which economic indices require the improvement. For the treatment of mulberry seed there was used 0.1 and 0.01 percent solution of "Asma N1" and "Asma N2". In the solutions of the mentioned concentration as a result of mulberry seeds treatment the percentage of the grown seeds has been considerably reduced. © 2005 Bull. Georg. Acad. Sci.
Key words: rugosity disease, mulberry seedling, hybridization.
Genetics and Selection
J. Kapanadze, I. Guledani, G. Chanturidze, G. Geladze
The Stomas and Trichomes of Squirting Cucumber
Presented by Member of the Academy D. Jokhadze, December 20, 2004
Abstract. Working cells of squirting cucumber (Ecballium elaterium L.) produce chloroplasts. All the overground organs of the plant are covered with trichomes. There are three types of trichomes: rodlike, lancet like and cone like. The rodlike trichomes are located around the guard cells; the lancet like on the cortex of the fruit and cone like on the vessels. The head of the cone like trichomes moves towards the sun. The reproduction of the trichome cells is preceded by the somatic crossingover. © 2005 Bull. Georg. Acad. Sci.
Key words: trichome, stoma, crossing over, axonema.
HUMAN AND ANIMAL PHYSIOLOGY
E. Mitaishvili, Member of the Academy T. Ioseliani , M. Gvadjaia, R. Intskirveli,
N. Mgaloblishvili, A. Kadagishvili
Influence of Piracetam on Memory Disorder Excited by Epileptic Seizure
Presented February 12, 2005
Abstract. Rats, with paroxysmal activity in sensorimotor cortex do not reveal adaptation to environment in "open field" test. They reveal high level of "investigative activity" during 5 days of testing. Epileptic seizures induce spatial memory impairments in T-maze test. Balance disruption between function of brain excitatory and inhibitory systems evokes rats hyperactivity and high level of anxiety. Daily injection of piracetam (8 mg/kg) reduces the hyperactivity and causes the improvement of spatial memory in epileptic rats. © 2005 Bull. Georg. Acad. Sci.
Key words: epileptic seizure, spatial memory, piracetam.
Human and Animal Physiology
N. Tsiklauri, M.G. Tsagareli
Study of Analgine (Metamizol) Antinociceptive Action in Rats
Presented by Member of the Academy T. Oniani, April 29, 2005
ABSTRACT. The investigation of non-opioid analgesic effects on the latency of tail-flick reflex in rats showed that intraperitoneal injection of analgine (250 mg/kg) resulted in significant antinociception as compared with the control group of rats with saline. Repeated administration of this drug revealed tolerance to analgine and cross-tolerance to morphine. Present data support the hypothesis on close relation between analgine tolerance and endogenous opioid system. © 2005 Bull. Georg. Acad. Sci.
Key words: analgine tolerance, non-opioid analgesics, morphine cross-tolerance, tail-flick reflex.
M. Khvedelidze, T. Mdzinarishvili, G. Khelashvili, G. Gogoladze, G. Mrevlishvili
Thermodynamic and Hydrodynamic Study of Dna-Anticancer Antibiotic (Adriablastin) Interaction
Presented by Member of the Academy M. Zaalishvili, February 8, 2005
Abstract. Investigation of DNA-adriablastin complex has shown that interaction between adriablastin and DNA occurs. It was shown that the result of this interaction becomes apparent both in calorimetric and viscometric experiments. © 2005 Bull. Georg. Acad. Sci.
Key words: calorimetry, viscometry, adriablastin, DNA.
E. Uturashvili, I. Kupatadze
The Study of the Essential Oils of Aromatic Plants, Growing in Various Regions of Georgia
Presented by Member of the Academy N. Nutsubidze, January 11, 2005
Abstract. It has been studied quantitative and qualitative composition of essential oils of aromatic plants parsley and celery grown in different ecological regions of Georgia. It was established by the method of air-liquid chromatography that soil-climatic conditions significantly affect both qualitative and quantitative composition of essential oils from aromatic plants. © 2005 Bull. Georg. Acad. Sci.
Key words: aromatic plants, essential oils, parsley, celery.
E. Kapanadze, E. Davitashvili, N. Nadiradze,
Corr. Member of the Academy N. Aleksidze
Influence of Galactose-Specific Lectin on the Intracellular Transformation of Glucose
Presented October 12, 2004
ABSTRACT. Influence of galactose-specific lectin, isolated from coriander, on glucose-6-phosphatase and aldolase activity in the human erythrocytes and bovine liver cells was studied. Lectin stimulated glucose-6-phosphatase activity and the tendency of activation of aldolase was revealed. © 2005 Bull. Georg. Acad. Sci.
Key words: lectin, enzyme activity, erythrocytes, liver cells.
Ch. Kakhniashvili, T. Chigvinadze, K. Bejanishvili, A. Apakidze
Phytoindication of Soils Polluted with Sim-Triazine Herbicides Residues
Presented by Corr. Member of the Academy D. Jokhadze, December, 7, 2004
Abstract. It was shown that the control of toxicity of soils polluted with sim-triazine herbicides can be carried out by phytoindication method. The main part of applied sim-triazine herbicides in environment remains with conservation of cyclic skeleton. The seadlings of pumpkin and kidney bean on soils treated with herbicides normally developed only after 9-10 years. © 2005 Bull. Georg. Acad. Sci.
Key words: agroecology, sim-triazine herbicides, phytoindication.
N. Surguladze, N. Koshoridze, R. Solomonia
The Influence of the Vesicular Inositol-Specific Lectin on the Bovine Brain Neurostenin Ca2+,Mg2+- ATPase Activity
Presented by Corr. Member of the Academy N. Aleksidze, October 19, 2004
ABSTRACT. The actomyosin- like protein neurostenin from bovine head brain synaptosomes has been allocated. The influence of inosit-specific lectin BVL-I obtained from synaptic vesicles on the neurostenin Ca2+, Mg2+-ATPase activity was studied. It is established that BVL-I strikingly stimulates neurostenin ATPase activity uncompetetively. © 2005 Bull. Georg. Acad. Sci.
Key words: lectin, neurostenin, ATPase activity.
Temperature Dependence of Bends in Satellite Dna
Presented by Member of the Academy T. Beridze, February 15, 2005
ABSTRACT. The mobility of three different satellite DNA monomers (Citrus limon, Poncirus trifoliata and Mus musculus ) in PAAG as a temperature function has been studied. It was shown that like mouse satellite DNA dimer the K-factor dependence on temperature for monomer has chair-like form. In the case of lemon and P.trifoliata the monomer was splitted into two components (181 and 186 bp) at 50C. With the increase of temperature two observed components are united. It can be supposed that in the temperature interval of 5-350C the satellite DNA monomers of C.limon and P.trifoliata in the solution exist in two - bent and straight forms at low ionic strength. © 2005 Bull. Georg. Acad. Sci.
Key words: satellite DNA, DNA bending, electrophoresis, mouse, Citrus limon, Poncirus trifoliata.
M. Tabagari, L. Kutateladze, I. Khokhashvili, M.Abashidze, M. Jobava
Production of Liquid Sugars from Starch-Containing Substrates Using the Amylase Preparations
Presented by Member of the Academy G. Kvesitadze, February 22, 2005
ABSTRACT. It has been studied the chemical composition of wheat and corn flours as starch-containing substrates. Enzymatic hydrolysis of the substrates was carried out using the highly active amylase preparations isolated from the micromycete Aspergillus oryzae. The obtained concentrated sugar syrup can be successfully applied in food industry as a saccharose-containing substrate. © 2005 Bull. Georg. Acad. Sci.
Key words: liquid sugar, starch-containing substrate, enzymatic hydrolysis, amylase preparation, Aspergillus oryzae.
Microbiology and Virology
A. Koptonashvili, Sh. Khetsuriani, K. Khetsuriani
Borjomi Mineral Water Microflora Content
Presented by Corr. Member of the Academy N. Nutsubidze, February 22, 2005
ABSTRACT. Microflora content of Borjomi mineral water (BMW) has been studied. It has been established that BMW microflora consists of carboxydobacteria, denitrification bacteria and thiobacteria. Storage duration and temperature regime preservation of the bacteria have been defined. © 2005 Bull. Georg. Acad. Sci.
Key words: Borjomi mineral water, carboxydobacteria, denitrification bacteria, thiobacteria.
MICROBIOLOGY AND VIROLOGY
T. Suladze, M. Darsavelidze, Member of the Academy T. Chanishvili,
M. Elizbarashvili, M. Dvalishvili
Isolation and Investigation of Microorganisms of Genus
ABSTRACT. 1064 clinical samples obtained from different cities of Georgia were investigated. 135 strains of Pseudomonas were isolated. Morpho-cultural and biochemical properties of freshly isolated strains of Pseudomonas were studied. The investigated Pseudomonas strains were divided into 4 groups: P. aeruginosa 107 strains, P. fluorescens 11 strains, P. putida 7 strains, P. cepacia 10 strains. Microorganisms had a multiple resistance toward antibiotics of 30 nomination and appeared to be resistant to phages (collection of Pseudomonas phages and Pyophage). 42 % of strains contained phages. 10% of strains were absolutely resistant. According to our investigation we have made the collection of antibiotic resistant strains of Pseudomonas (135). © 2005 Bull. Georg. Acad. Sci.
Key words: strain, infection, antibiotic, clinical sample.
New Data on Microfungi Associated with some Trees and Shrubs of Vere River Valley
Presented by Member of the Academy G. Nakhutsrishvili, May 13, 2005
ABSTRACT. The paper deals with 18 species of microfungi recorded for the first time in Georgia. 11 species of micromycetes are accounted for new fungus-host combination. © 2005 Bull. Georg. Acad. Sci.
Key words: Vere river valley, trees, shrubs, fire injured plants.
L. Sikharulia, G. Danelia, H. Didebeli
Pharmacokinetic Peculiarities of Trimecain and its Administration while Treating Tuberculosis Complicated with Paradontitis
Presented by Member of the Academy T.Dekanosidze, February 15, 2005
ABSTRACT. Trimecain is the preparatus that regulates functions of peripheric part of the nervous system. It has sedative, soporific, anticonvulsive and analgetic action. Side effects are not significant. It is proved to be well administered for patients with tuberculosis complicated with paradontitis. © 2005 Bull. Georg. Acad. Sci.
Key words: trimecain, paradontitis, tuberculosis.
N. Shengelia, F. Watzinger
Modern Methods of Surgical Rehabilitation of Patients with Oral Malignant Tumour
Presented by Member of the Academy F.Todua, March 1, 2005
Abstract. To choose the treatment technique of squamous cell cancer of oral cavity and to define postoperative rehabilitation 53 patients were examined who underwent the treatment at the maxillofacial surgical department of the Wien University Medical Clinic. It was established that in order to eliminate the tumor one moment realization of radical surgery plastic reconstruction operation using vascular autograft was significant. To restore soft tissues the best donor is a piece removed from small intestine while at considerable defect of bone tissues it is the muscularskeletal iliac crest bone graft. It is found that iliac crest bone graft reveales similarity with mandibula, which creates most favorable conditions for bone consolidation and further grafting. © 2005 Bull. Georg. Acad. Sci.
Key words: oral cancer, malignant tumor, grafting, maxillofacial surgery.
O. Kvitsiani, G. Pipia, D. Abuladze, M. Kiladze, T. Chartolani
Comparative Analysis of Laparoscopic and Traditional Methods of Acute Appendicitis Treatment
Presented by Member of the Academy T. Oniani, March 18, 2005
Abstract. The study presents analysis of the results of medical treatments of 326 patients diagnosed with acute appendicitis. Comparative analysis of traditional and laparoscopic methods is conducted considering intra- and postoperational complications and perspective results. © 2005 Bull. Georg. Acad. Sci.
Key words: laparoscopic appendectomy, laparoscopic diagnosis, pneumoperitoneum, insulffation, trocar, coagulation.
Z. Zurabashvili, Z. Gvishiani, I. Amniashvili
Influence of Environmental Temperature on the Migration of Different Components of Tobacco Smoke
Presented by Member of the Academy T. Chanishvili, February 11, 2005
Abstract. The ability of specific components of tobacco smoke to be spread in the environmental atmosphere by air flows has been defined. It is shown the dependence of the process on the following factors: physico-chemical parameters of atmospheric environment, brand of tobacco product, intensity of pollution source (activity of smoking process).
The effect of temperature parameters of the environment on the migration character of the tobacco smoke specific components in the air is evaluated. Individual migration rate of each component and influence of the environmental temperature on sigarette smoke structure has been revealed. © 2005 Bull. Georg. Acad. Sci.
Key words: atmospher, temperature, sigarette smoke, chromatography.
E. Uchaneishvili, M. Bolkvadze, T. Sulava, D. Kutivadze, N. Saginadze, T. Gvamichava
Parenchyma-Stromal Relations in Colon Adenomas Developed against the Background of Plaferon or without it
Presented by Member of the Academy N. Javakhishvili, December 21, 2004
Abstract. Study of stromal elements in colon adenomas, induced by 1, 2- dimethylhydrazine has revealed less number of newly formed blood vessels in tumors developed against the background of Plaferon, lower share of slightly differentiated cells, greater portion of mature fibroblasts, which presumably cause the increase of total functional activity of fibroblasts population. This difference may be caused by the effect of Plaferon, in particular, by its anti-inflammatory, anti-hypoxic activities, inhibition of interleukin-1 (IL-1) synthesis which strengthens functional activity of fibroblasts. © 2005 Bull. Georg. Acad. Sci.
Key words: DMH-induced colon tumor, Plaferon, stroma.
G. Tsereteli, N. Bibilashvili
The Ways of Determination and Decrease of Negative Economic Results Caused by Unemployment in Postcommunist Countries (Including Georgia)
Presented by Corr. Member of the Academy V. Papava, December 4, 2005
ABSTRACT. The given article is dedicated to the study of issues of estimating and regulating negative economic results caused by unemployment in postcommunist countries. It elucidates not only methodological-methodic issues to determine the mentioned results, but practical problems according to the data of Georgia. © 2005 Bull. Georg. Acad. Sci.
Key words: unemployment, determination, negative economic results caused by unemployment.
Interrelation between Artistic Persuasion and Specific Features of Mythical Consciousness in the Context of Myth as an Aesthetic Category
Presented by Corr. Member of the Academy R. Gordeziani, February 21, 2005
ABSTRACT. The assertion of myth as an aesthetic category, giving it the status of methodological abstraction, can be particularly fruitful for addressing theoretical questions linked to the study of art. This includes going deeper into the essence of such phenomena as artistic persuasion, which is connected to certain qualities of mythological thought. © 2005 Bull. Georg. Acad. Sci.
Key words: myth, source, aesthetic category, artistic persuasion, taste.
Konstantine Kapaneli about Artistic Creativity and
Philosophy of Life
Presented by Member of the Academy G. Tevzadze, May 11, 2005
Abstract. Philosophical ideas of Georgian philosopher Konstantine Kapaneli (1889 1952) have
been discussed. Considering aesthetic theory of K. Kapaneli it is established that W. Dilthey, representative of
philosophy of life had an impact on Kapaneli's conceptions. Konstantine Kapaneli is considered to be the founder
of philosophy of life in Georgia. © 2005 Bull. Georg. Acad. Sci.
M. Nikolaishvili, L. Vasadze, G. Iordanishvili, G. Ormotsadze, T. Soloshvili,
Member of the Academy K.Nadareishvili
Action of Mobile Phones Frequency (900/1800 MHz) Electromagnetic Fields on Rat's Passive Avoidance Reaction
Presented December 28, 2004
Abstract. The exposure to everyday 6-hour cyclic action of mobile phones electromagnetic field (900/1800 MHz) placed in the distance of 10 cm from the animals for two weeks causes significant changes of psychonervous character in rats' memory. Namely, memory is reduced, realization of behavioral function worsens and suppressed action on the elaboration of passive avoidance reaction is observed. © 2005 Bull. Georg. Acad. Sci.
Key words: mobile phones.
V. Khositashvili, L. Khositashvili, N. Atuashvili, V. Osmanova, Z. Chankseliani
Results of Clinical Tests of Phytopreparation "Tkis Nobati"
Presented by Corr. Member of the Academy T.Urushadze, March 1, 2005
Abstract. The present paper deals with the results of the study of natural vegetative extract of Folium pini. On the basis of multiple experiments it has been established that phytopreparation "Tkis Nobati" strengthens the leucocytoprotection of organism and improves physiological state in oncologic patients in the process of chemoradio-therapy treatment. The preparation "Tkis Nobati" provides the elimination of heavy metals from the organism. © 2005 Bull. Georg. Acad. Sci.
Key words: extract of conifers, Folium pini, antioxidant-radioprotector.
G. Adamia, T.Varazashvili, T. Ananiashvili, M. Kurashvili, M. Pruidze, V. Gvakharia*,
N. Machitadze*, Corr. Member of the Academy M. Gordeziani
Study of Lead Accumulation Ability of some Sowing Plants
Presented December 28, 2004
ABSTRACT. Plants with high lead bioaccumulation coefficient (capsicum 133, ryegrass 95, alfalfa 95) have been revealed. It is stated that EDTA promotes lead accumulation in overground parts of ryegrass: lead content in root was decreased in 90%, but in leaves it enhanced tenfold. It is shown that bioactive preparations of Inagrosa Agrobiologicas, S.A (Spain): Fosnutren and Humiforte enhance 2.5 fold lead accumulation by roots, intensify plant resistance to toxic effect of heavy metal and promote large biomass formation. Proceedingly, EDTA can be recommended for the application in technologies of lead phytoextraction, Fosnutren and Humiforte in rhizofiltration. © 2005 Bull. Georg. Acad. Sci.
Key words: lead, phytoremediation, phytoextraction, rhizofiltration.
History of Science
T. Epremidze, M. Verulashvili
Nuclear Spin-Lattice Relaxation Issues in Scientific Studies
by Givi Khutsishvili
Presented by Member of the Academy T. Sanadze, February 22, 2005
Abstract. This work reports some facts about outstanding physicist, Professor Givi Khutsishvili (1921 1979), who brought great contributions into nuclear spin diffusion and relaxation theory in crystals with magnetic admixture. G. Khutsishvili was the first to show that nuclear spin-system is characterized by unified relaxation
time. He introduced a new distance parameter, which determined the way the relaxation occurred. © 2005 Bull. Georg. Acad. Sci.
Key words: magnetic resonance, spin relaxation, spin diffusion, magnetic impurities, nonequilibrium state.