Vol. 36 No. 2 (198) (2002)

The influence of anionic and nonionic micelles on phenyldiethanolamine reaction with potassium persulfate in aqueous solutions at 298 K has been studied. It has been established that in presence of both type micelles the reaction rate, determined by iodometric and colorimetric methods decreases. With enhance of surfactants initial concentration the magnitude of the slowing – down of the reaction rate increases. On the basis of kinetic data the constants of amine binding with E-30 micelles have been calculated. It has been assumed that the first product of amine oxidation is localized in micelle hydrophobe nuclei.

The process of separation of proline from accompanying amino-acids of the proline cultural liquid on anion exchange resin has been investigated and it was shown that the division takes place effectively on strong base anionite. The process of decoloration and desalting of eluat of amino-acids mixture on cation exchange resin has been studied and the optimal parameters have been defined. The coefficients of amino-acids distribution from decoloured and desalted eluat on AV-17 anionite at the OH -form in static conditions has been defined and it was shown that proline has the smallest selectivity to anionite, while isoleucine has the greatest one. In the dynamic conditions amino-acids sorption curves on AV-17 anionite have been obtained and the optimal technological parameters of the process of separation of proline from amino-acid have been defined.

The methods for obtaining of sodium aluminate, aluminium sulfate, aluminium hydroxide, aluminium hydroxychloride and alumo-ammonium applied products from aluminium-containing industrial wastes have been studied. The goal products synthesized by means of elaborated methods could be used in paper, leather, textile, artificial precious stones industry as well as catalysts for natural and waste waters treatment processes.

Improved method for obtaining 2-ethoxycarbonyl-2-(3’-oxobuthyl)- and (3’-oxobuthyl)-4-substituted-4-pentanolids by means of sulphuric acid hydrolysis of corresponding 2-(y-chlorcrotyl)-4-substituted-4-pentanolids has been suggested. It has been shown that it is expedient to carry out the hydrolysis by saturated (92–96%) sulphuric acid. Optimal conditions, which provide high yields of goaled products, have been discovered.

The plant of St. John worth Hypericum perforatum L. was introduced into the isolated culture. The nutrient media both for callus tissue growth and for induction of processes of morphogenesis, plant growth and clonal micro- propagation were elaborated. Dynamics of the accumulation of raw and dry matters in callus tissue during cultivation as well as the cytological characteristic of callus tissue were studied. The cell and nudeus dimensions were defined.

Anatomical structure of gametophyte and moss-capsule (sporogonium) footlet of 20 representatives of true mosses belonging to the various families and ecological groups, spread in the hemiarid zone of Ararat valley, was studied. According to the preliminary data three types of stem structure of true mosses can be distinguished. It is noted also the essential variability of anatomical peculiarities of stem anatomy in comparison with the more conservative structure of plate of leaf and with the more monotonous structure, on the whole, of moss-capsule footlet.

There are results of morphological examination of the liver of Rana ridibunda that was done in different periods of time after partial hepatectomy. It is shown that the restorative reaction of the frogs liver after partial hepatectomy, as well as the reaction of the liver of mammals and birds, is characterized by hepatocytes nuclei and cytoplasm hypertrophy. In the dynamics of quantity changes of double-nuclei hepatocytes there was determined a common peculiarity between the liver of birds and the one of frogs, expressed in the increase of ploidy (number of double-nuclei) of cells during posttraumatic regeneration.

Physico-chemical properties of the Lake Sevan water and underground and ground waters from boreholes of the Dzknaget River ostium region as well as the content of microorganisms in these waters were studied. Selected water’s samples are the basis for isolation of extreme forms of microorganisms.

The intensity of lipid peroxidation in tissues of high vertebrates with chemiluminescence and spectrophotometer definition of the MDA-concentration (malonic dialdehid) was examined. The received facts demonstrate, that level of free-radical oxidation processes in the row fishes-amphibians-reptiles-mammalians decrease, and, probably, it is connected not only with increasing of nourishing degree of fat acids in lipids of tissues of organisms in this evolutionary row, but also with amplification of role of antioxidant system, controlling the intensity of these processes.

The muturalization and changes of different sorts of grape sprout has been researched in different levels of chill-durability. As research testifies, it turns out, that those changes are accustomed to two breaking periods: l)early spring, 2) late autumn (autumn-winter). The changes and differentiation of grapes' sprout tissues are appeared in early spring and summer periods. This differentiation is not visible in autumn, if there are favourable conditions.

The mycological investigation of the defeat tuber of potatoes, showed the caused agents of disease considered to be widely spread rhizosphere and rhizoplane researched cultures, including these species of genus’s: Alternaria, Fusarium, Rhezoctonia, Cladosporium, Oospora. The disease of tuber is caused not by separated species, but association of fungi.

Familial Mediterranean Fever (FMF) is a recessive inherited and ethnically restricted disease affecting populations of Mediterranean ancestry. In 1500 Armenian FMF patients we have found that mutations in the gene MEFV on chromosome 16 encoding pyrin/marenostrin, uniquely expressed in granulocytes, cosegregate with the FMF phenotype in affected pedigrees. The M694V homozygous genotype was found to be associated with a higher prevalence of renal amyloidosis and arthritis, compared with other genotypes. Our results should allow more-accurate identification of carriers and indicate an important role of genetic testing in the diagnosis of FMF.