Vyacheslav MAKSIMOV

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The hypothesis that various extracellular enzymes produced by the yeast Saccharomyces cerevisiae exert a mutual influence on their secretion into the culture medium was tested experimentally. The statistically processed results indicate that extracellular invertase affects the secretion of acid phosphatase, and acid phosphatase affects the secretion of(More)
Quantitative data on the nutritional requirements of microorganisms are necessary to predict the behavior of bacterial populations and to control their cultivation. The requirements of the R, S, and M dissociants of P. aeruginosa for carbon, nitrogen, and phosphorus were derived from the results of 88 cultivation experiments. For each of the dissociants, we(More)
Relationships between physicochemical variables and between abundance of zooplankton species, as well as dependence of the species abundance on abiotic factors, were studied by determination analysis in the ecosystems of the Sura River and Surskoe Reservoir. Marker hydrochemical variables (BOD 5 and concentration of dissolved oxygen) were revealed; their(More)
The effect of glucose, nitrate, and phosphate on the stationary-phase growth parameters of the R, S, and M dissociants of the hydrocarbon-oxidizing bacterium Pseudomonas aeruginosa K-2 was studied. The data obtained were analyzed in terms of the Mitscherlich equation. S dissociant required less glucose than other dissociants, whereas M dissociant required(More)
Effect of nitrogen sources (organic complexes and mineral salts) on L-glutamate oxidase synthesis by Streptomyces cremeus 510 MGU was studied. Optimal enzyme production was not provided by any single nitrogen source. The most effective combination of nitrogen sources (soy flour, peptone, ammonium sulfate) was elaborated by the mathematical planning method.(More)
The effect of glucose, nitrate, and phosphate on the stationary-phase growth characteristics of R, S, and M dissociants of the hydrocarbon-oxidizing strain P. aeruginosa K-2 was studied. The optimal concentrations of glucose and phosphate providing for at least 90% of the maximal culture density were found to be 2-7% glucose and 0.02-0.12% phosphate. The(More)
The paper presents the results of the long-term investigation of microbial communities in the technogenically vulnerable mouth riverine and lacustrine ecosystems of Lake Baikal. The structural and functional parameters of the microbial communities were analyzed from the standpoint of developing destructive processes. The analysis showed that the total(More)
Requirements of R-, S-, and M-dissociants of Pseudomonas aeruginosaK-2 strain in glucose, nitrate, and phosphate, as well as the error of determination, have been calculated from the data of 250 experiments on their batch cultivation on the media with the various initial content of these resources. The resource requirements of R- and S-dissociants appear(More)
The effect of nitrogen, phosphorus, glucose and temperature on the assimilation of diesel fuel and the biomass yield of Mycobacterium mucosum was studied by the method of complete factor experiment. The concentration of nitrogen and phosphorus were shown to be most important for the above processes. The growth dynamics of the culture was studied as well as(More)