^{[№ 12 (app.1) ' 2006]}

Efremov I.V., Rakhimov N.N., Yanchuk E.L.
PECULIARITIES OF RADIOACTIVE NUCLIDE MIGRATION OF CAESIUM-137 AND STRONTIUM-90 IN THE SYSTEM SOIL-PLANT ^{[№ 12 ' 2005]}
This article is devoted to the studying of radioactive nuclide Cs-137 and Sr-90 migration in soil-plant complexes of Orenburg region. Line dependence between radioactive nuclides concentration in soil and plants is got on the base of mathematical modeling method. Equation of regression, allowing to appreciate intensity of radioactive nuclide migration by soil description are constructed here. Correlated analysis between physical-chemical characteristics of the soil and radioactive nuclide of caesium-137 and strontium-90 contents in the soil description is made in this article too. Analytical dependences allowing to calculate radioactive nuclide contents in plants depending to their concentration in soil and physical-chemical soil characteristics are get here on the base of method using of group argument accounting.

Efremov I.V., Yanchuk E.L.
ATMOSPHERE POLLUTION SPACE-TIME NET MONITORING OPTIMIZATION WITH LINEAR INTERPOLATION METHODS ^{[№ 2 ' 2004]}
The article considers math's aspects of atmosphere pollution dynamic control points location optimization, optimization methods analysis is carried out. Control points optimal location methodic is proposed based on function linear interpolation inaccuracy minimization, describing pollution substances concentration field.