Kostina E.N.
INTERNATIONAL EXPERIENCE OF ACCOUNTING OF INDEXES OF ENVIRONMENT STATISTICS AT THE NATIONAL BOOK-KEEPING ^{[№ 8 ' 2010]}
General trends of integration of indexes of environment statistics at the national system of accounting of some countries are regarded in this article. The author of this article researches the programs of international organizations — statistic committee in U.N.O. and World Bank at this problem and also researches methodologies of ecological accounts construction in European countries.

Revin V.V., Atyikyan N.A., Kostina E.G., Gogotov I.N.
CALCIUM INFLUENCE UPON CHANGE OF CELL LIPIDS COMPOSITION OF RHODOCOCCUS ERYTHROPOLIS АС-858 Т IN THE COURSE OF BATCH AND SEMICONTINUOUS FERMENTATION IN ENVIRONMENTS WITH DIFFERENT HEXADECANE CONCENTRATION ^{[№ 11 ' 2008]}
The authors investigate accumulation of total lipids and changes of phospholipid composition of cells of Rhodococcus erythropolis ВКМ Ас-858 Т depending on ion Ca²⁺ and hexadecane concentration in nutrient medium. It is shown that for growth and lipids accumulation of this bacterium in modified medium of Towson the optimum Ca²⁺ content is 4 mg/l, and hexadecane – 1%. In the course of fermentation the qualitative composition of phospholipids does not change, though their quantitative correlation alters. They used optimized medium for semicontinuous fermentation of bacteria by hemicontinuous method to get maximum biomass and lipids output, and that was done under 60% oxygenation of medium.

Kostina I.S.
TECHNICAL-ECONOMIC MODEL OF REDUCE EXPENSES DETERMINATION OF TECHNICAL OPERATION UNIT AT CONDUCTING OF AVIATION-CHEMICAL WORKS ^{[№ 6 ' 2007]}
The aims and tasks if scientific school of Orenburg State University at increase of aviation use effectiveness at national economy are regarded in this article. Analytical model of aviation-chemical works conducting process, which allows realization of complex calculations of technical and economic indexes for different types of air crafts (plane and helicopter), different technologies of aviation-chemical works, territorial and climatic conditions, is described here. Technical-economic model gives the opportunity to formalize and to solve mathematical task of finding of optimal parameters of aviation specialized system.