G. Khimshiashvili, D. Siersma
Minimal Round Functions on Low-Dimensional Manifolds
Presented by Corr.Member of
the Academy N.Berikashvili,
Abstract. We consider functions on manifolds with critical sets equal to disjoint unions of several smoothly embedded circles and investigate topological properties of those of such functions which have the minimal possible number of critical loops. The geometric structure and transversal singularities of minimal round functions on compact surfaces are described explicitly. We also obtain a complete list of topological types of those closed three-dimensional manifolds which admit round functions with not more than three critical loops.
Key words: smooth manifold, round function, critical set, transversal singularity type, lens space, Seifert fibration, connected sum.
Pricing of the Option which is the Combination of Russian and Integral Russian Options
Presented by Corr.Member of the Academy N.Vakhania,
Abstract. We adobt the classical Black-Sholes setup and consider a new American option, which is the combination of Russian and integral Russian options. The pricing problem of this option is reduced to solving an optimal stopping problem. We have solved this stopping problem in case of infinite horizon.
Key words: American option, put, Russian option, optimal stopping.
M.Shilakadze, Z.Kashiashvili, N.Berishvili
The Issues of Determination of the Calculative Flexibility Module in Sliding Beatings while Determining Contact Tensions
Presented by Member of the Academy T.Loladze, September 14, 2000
Abstract. While calculating contact tension, definition “Conditional Flexibility Module” is introduced. It is proved that its calculated quantity or “CFM”, which is connected with the quantity of deformations of carrying elements, varies in quite wide limits according to constructive solution of the coupled parts of the unit.
Key words: sliding bearing, flexibility module, condition flexibility module, contact tensions, Poisson coefficient.
M.Kaviladze, N.Gubadze, M.Sikharulidze, N.Djokhadze, G.Natsvlishvili, E.Gamtsemlidze
New Complex Method to Predict Earthquakes
Presented by Corr.Member of the Academy T.Sanadze, October 31, 2000
ABSTRACT. The goal of the work is to reveAGRICULTURAL CHEMISTRY
Influence of Long-Term Application of Magnesium Doses on the Development of Mandarine Root System
Presented by corr.Member of the Academy G.Tsintsadze, December 5, 2000
Abstract. We have studied long-term application (26 years) of magnesium doses on the background of NPK in mandarine garden ‘Unschiu”.
Key words: Citrus unschiu, magnesium fertilizer, root system.
E.Khurtsidze, M.Khurtsidze, M.Zarkua, G.Alexidze
A New Lectin from Mulberries (Morus nigra L.): Isolation and some Properties
Presented by Corr.Member of the Academy N.Aleksidze, October 10, 2000
Abstract. A new lectin characterized by high hemagglutinating activity has been identified from the fruits of mulberry (Morus nigra L.), which agglutinates human erythrocytes without specificity towards ABO blood types. Among the 23 analyzed carbohydrates it exerts specificity towards monosaccharides of galactose group, some galactose-contained oligosaccharides and also towards methylated monosaccharides of mannose group. The distribution of lectin activity in some physiologically different fruit tissues was investigated. The results obtained demonstrate that lectins are transported and accumulated in the seeds during fruit maturation. The possible physiological role of mulberry seed lectin is discussed.
Key words: mulberry, fruit, seed, lectin, activity, distribution.
al new and far more reliable precursors of earthquakes. The main-point of the work is to join all the existent methods for the separate components such as Rn, He, H2, CH4 etc. in one set with the goal to study each of them in the same sample. It means, that the results obtained for each of them, might be compared with thePHYTOPATHOLOGY
Contribution to the Fungal Biodiversity of Georgia: Microfungi on Rosa sp.
Presented by Corr.Member of the Academy G.Nakhutsrishvili, November 21, 2000
Abstract. New data concerning mycobiotic complexes on dead fruits, fruit galls and stems of Rosa sp. are given. Camarosporium rosae, Diaporthopsis sp., Microdiplodia rosarum, Phomopsis rosae, P.rhodophila, Valsella rosae are recorded for the first time in Georgia. Other information concerns the new finding or new localities of fungi on Rosa sp. in Georgia. Associated fungi include the whole complexes of necrotrophic micromycetes within the given shrub.
Key words: microfungi, Rosa sp., fruits, galls, stems, Georgia.
New Data on Microfungi of Common Persimmon (Diospyros lotus) in Georgia
Presented by Corr.Member of the Academy G.Nakhutsrishvili, October 17, 2000
Abstract. 18 species of microfungi first recorded on Diospyros lotus are briefly characterized. Of them the following are new records to Georgia: Ascochyta sp., Camarosporium sp., Coleophoma sp., Cytosporina sp., Gliocladium sp., Phoma sp., Phomopsis sp., Sphaeropsis diospyri and Sporidesmium sp.
Key words: microfungi, Diospyros lotus, Georgia.
Key words: earthquake prediction, precursors, radon, helium, methane, elemental analysis, isotope.
Cottony Scale Neopulvinaria innumerabilis (Rathvon)(Coccinea-Coccidae) on Vine and its Natural Enemies in Eastern Georgia
Presented by Corr.Member of the Academy I.Eliava, July 11, 2000
Abstract. In the article results of the observations of pest Cottony Scale colony density on vine, class structure, biological control of the pest with the rational use of the predatory beetle Cryptolaemus montrouzieri Mulsant are presented.
Key words: Neopulvinaria Innumerabilis, Coccidae pest, natural enemies, biological control.
Kh.Danelia, A.Chogoshvili, J.Oniani, M.Meladze, T.Oniani, Ts.Jorbenadze
The Action of Biomembrane
modifying Abiotic Environmental Stress-Factors on the Sensitivity of
Presented by Corr.Member of the Academy D.Jokhadze, November 31, 2000
Abstract. The influence of temperature stress (chilling) on the resistance of algae has been shown on the example of herbicide Paraquate, as a pollutant.
The reservoirs adjacent to the mountain rivers of Georgia in the conditions of frequent environmental changes are expected to get unjustifiably high index of limit concentration of pollutants during biomonitoring if the above mentioned unsteadiness of environmental stress factors is neglected.
Key words: alga, pollutant, herbicide, chilling stress.
E.Uchaneishvili, T.Gvamichava, Corr.Member of the Academy V.Bakhutashvili
Some Peculiarities of Adenomas Induced on the Background of Preparation Plaferon
Presented by Member of the Academy N.Javakhishvili, May 12, 2000
Abstract. Morphofunctional peculiarities of stromal elements in adenomas of colon of experimental cancerogenesis and influence of Plaferon on it have been studied electroradioautographically. In fibroblast population of adenomas, formed under Plaferon action, the share of low-differentiated fibroblasts decreases, but the share of young and mature fibroblasts increases. With the growth of dysplasia in the stroma of colon adenomas degree the amount of plasmacytes decreases, number of lympocytes increases, but in adenomas, that are induced on the background of Plaferon decrease plasmacyte share in Lymphoplasmic cellular infiltrate is less intensive.
Key words: stroma, fibroblasts, lymphocytes, plasmacytes, Plaferon.
N.Mitskevichi, K.Machavariani, G.Khechinashvili, N.Porakishvili
Correlation of the High Levels of Serum LgG4 and Extrinsic Allergic Alveolitis in Poultry Farmers in Georgia
Presented by Corr.Member of the Academy G.Gurgenidze, October 19, 2000
Abstract. The poultry farmers in Georgia were tested for sensitivity to the specific allergens such as chicken serum, pillow down, domestic dust. A total of 22 workers out of 68 were found to have positive skin tests and marked clinical manifestation on allergic respiratory disorders - bronchial asthma (BA), allergic rhinitis (AR), extrinsic allergic alveolitis (EAA). With the use of ELISA it was estimated that high level of lgE is characteristic for the poultry workers with BA and AR, but not EAA. In case of EAA lgM and lgA levels were increased, while lgM elevated level was found in workers with AR.
Dramatic increase in the levels of lgG3 and lgG4 was detected only in workers with EAA. EAA therefore seems to develop without significant increase of serum lgE in workers exposed to either poultry or fungal allergens. lgG4 seems to play a key role in its pathogenesis.
Key words: extrinsic allergic alveolitis
L. Kardava, Kh.gabunia, M.Tevzadze, V.Barbakadze, D.Ghirdaladze, G.Iosava, N.Porakishvili
A Dihidroxycinnamate-derived Polymer from Symphytum asperum Increases spontaneous in vitro Apoptosis of B-chronic Lymphocytic Leukaemia Cells
Presented by Corr.Member of the Academy G.Tumanishvili, October 19, 2000
Abstract. Peripheral blood lymphocytes (PBL) from patients with B-chronic lympocytic leukaemia (B-CLL) apoptosis in vitro in contrast to their prolonged life span in vivo. In the present study we examined the survival of B-CLL cells in the presence of a new dihidroxy cinnamate-derived water soluble high molecular weight (>1000 kDa) polymers from root extracts of Symphytum asperum (S.a.) and Symphytum caucasicum (S.c.), IL-4 and IFN-g, while cultured in vitro. Apoptosis and B-CLL differentiation were identified morfologically by Gimsa staining daily up to 7 days of culture. The results of our study indicate that the survival of B-CLL cells in long-term culture as measured by the rate of apoptosis is noticeably enhanced in the presence of IL-4 and IFN-g, S.c. has no antiapoptotic effect, but enhances generation of plasmacytoid cells. In contrast, S.a. significantly enhances B-CLL cell death by apoptosis.
Key words: B-CLL, B lymphocytes, cytokines, apoptosis.
Competitive Ability in Retail Trade
Presented by Corr.Member of the Academy L.Chikava, December 19, 2000
Abstract. The paper is dedicated to the problem of competitive ability in retail trade. The indices of competitive ability are discussed concluding that competitive ability is an integrating index defined by three interrelated and interdependent factors: competition, competitive advantages, rival strategies.
Key words: exchange relations, competitive ability, retail trade.
(EAA), lgE, lgG, lgG4.PHILOLOGY
The Sensational Headline
Presented by Member of the Academy A.Gvakharia, December 15, 2000
Abstract. The scoops in print media are widesold all over the modern world. Such stories need the headlines of the same tone and contents. This is the sensational headline, which is described, with showing its ups and downs on the sheet.
Key words: advertising function, print media, scandal, sensation, scoop, subhead, yellow press.
HISTORY OF SCIENCE
Principle of "T" Letter-mark Origination and its Ideographical Name
Presented by Member of the Academy G.Tsitsishvili, October 31, 2000
Abstract. Shumerian letter-mark of the Moon (“mtuari) is "T" - "Th" or "Thu", which was recognized as “God Father” by Shumers and even by Georgian mountaineers of XX c.
Key words: "T"-"Th" letter-mark, Knosos clay plates, XlV c. BC, Georgian alphabet, letter-marks.