%0 Journal Article %T Evaluation of the microstructure of xylem of tree trunks by the method of mathematical modeling %A Yurev, N.. %A Kamalova, N.. %A Evsikova, N.. %K the change of the ambient temperature, potential difference, electric field %J Actual directions of scientific researches of the XXI century: theory and practice %D 2015 %N 3 %P 7 %I FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov