Results of studies of biodiversity of bacteria of Enterobacteriaceae family and of non-enzymatic group belonging to the group of potentially pathogenic bacteria are presented. They are found for the first time, mainly in litoral regions of the lake, and have not been found in the pelagial zone. Bacteria of 31 species from 14 genera have been identified. The results of isolation and identification have demonstrated that the most frequent in litoral zones were bacteria from genera Acinetobacter, Pseudomonas, Citrobacter and Enterobacter. The most frequently occurring were the following species: Acinetobacter calcoaceticum var. Joffi (7.7 %), Pseudomonas aeruginosa (6.3 %), Alcvaligenes spp. (3.5 %), and Escherichia coli (3.2 % of all the heterotrophic microorganisms found).
The structure of phytoplankton is analyzed on the basis of estimates of the most numerous phytoplankton species that make the most contribution to its biomass. Tha analysis was carried out in the years differing in the level of mellosira Baikaliansis. In the year precentig the maxsimum of mellosira nomber (1989), intensely vegetating were Romeria sp., Dinobrion sociale, Cyclotella baikalensis. In the year of mass mellosira reproduction (1990), species of genera Synedra, Cyclotella minuta, Chrysidalis sp., Glenodinum sp. And some green algae developed maximally. In the next year (1991) with the poorest yield of mellosira, the largest numbers were observed in Nitschia acicularis, Gymnodinium sp., Cyclotella baikalensis. These data do not quite coincide with those found in analysis of the time course of alga population in 1946
The species composition and the numbers of Flagellata in the plankton of the Chivyrkui Gulf of Baikal were studied in March, August, September and October 1998. The list of Flagellata species of the gulf has been supplemented with 6 species 5 out of which are heterotrophs inhabiting mainly mesotrophic water bodies. For the first time colorless Cryptophyta
VALERY M. DEMBITSKY1 and GENRICH A. TOLSTIKOV2 1School of Pharmacy, P. O. Box 12065, The Hebrew University of Jerusalem, Jerusalem 91120 (Israel), E-mail: dvalery@cc.huji.ac.il 2N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, Pr. Lavrentyeva 9, Novosibirsk 630090 (Russia), E-mail: gtolstik@nioch.nsc.ru
Pages: 363-370
VASILY L. KORNIENKO 1Institute of Chemistry and Chemical Technology, Siberian Branch of the Russian Academy of Sciences, Ul. K. Marxa 42, Krasnoyarsk 660049 (Russia), E-mail: kvl@icct.ru
Pages: 371-378
The most urgent and promising lines of investigations in the field of indirect oxidation of organic substances by hydrogen peroxide electrochemically generated in situ from oxygen in aqueous solutions of electrolytes with varied ðÍ are considered: 1) application of gas-diffusion electrodes for intensification of electro-reduction of oxygen; 2) the potentialities of a simultaneous production of electric power and valuable products electro-synthesis, hybrid systems a fuel element
OLGA YU. GLYZINA1, LARISA I. BELYKH2, NIKOLAY A. LATYSHEV3, ALEXANDER V. GLYZIN4 and ALEXANDER G. GORSHKOV1 1Limnological Institute, Siberian Branch of the Russian Academy of Sciences, Ul. Ulan-Batorskaya 3, Irkutsk 664033 (Russia), E-mail: info@lin.irk.ru 2Irkutsk State University, Ul. Lenina 3, Irkutsk 664003 (Russia) 3Institute of Marine Biology, Far-Eastern Branch of the Russian Academy of Sciences, Ul. Palchevskogo 17, Vladivostok 690022 (Russia) 4Siberian Institute of Plant Physiology and Biochemistry, Siberian Branch of the Russian Academy of Sciences, Ul. Lermontova 132, Irkutsk 664033 (Russia)
Pages: 409-412
Model experiments for investigation of mutual influence of anthracene and pyrene (polycyclic aromatic hydrocarbons) on the one hand and sweet-water sponge Lubomirskia baikalensis widespread in the Lake Baikal on the other hand have been carried out. The sponge
VICTOR M. GONCHAROV and DMITRY V. ERSHOV
Siberian State Technological University, Pr. Mira 82, Krasnoyarsk 660049 (Russia), E-mail: fpkt@sibstu.kts.ru
Pages: 413-418
The investigation of physicochemical properties of carbonaceous materials of different crystallographic structure is performed; the efficiency of their application as fillers for the elastomer compositions is studied. It is demonstrated that the application of carbonaceous dispersed fillers of mineral and artificial origin in elastomer compositions is the most efficient after their preliminary combination with carbon black in the aqueous phase.
BORIS N. KUZNETSOV, NIKOLAY V. CHESNOKOV, NADEZHDA M. MIKOVA, LILIA V. NAIMUSHINA, NINA I. PAVLENKO and GENNADY E. SELYUTIN 1Institute of Chemistry and Chemical Technology, Siberian Branch of the Russian Academy of Sciences, Ul. K. Marxa 42, Krasnoyarsk 660049 (Russia), E-mail: cnv@icct.ru
Pages: 431-440
The parameters of the pyrolysis of copper-modified sulphite cellulose and aspen wood have been chosen to provide obtaining of copper-containing porous carbon materials. Dependencies connecting the yield of carbonized product and its specific surface area with pyrolysis conditions and the method of sample modifying were obtained. Transformations of metal-containing cellulose under thermal treatment and textural characteristics of carbon products were investigated by FTIR (DRIFT) spectroscopy, ESR spectroscopy, electron microscopy, thermogravimetry and BET techniques. Decreasing of the start of intensive thermal decomposition process for copper-containing cellulose on 40
