TY CONF TI APPLICATION OF HEAT AND MASS TRANSFER METHODS FOR OPERATIONAL CONTROL OF DEGRADATION OF HYDRAULIC OILS KW hydraulic oil KW logging machines KW heat and mass transfer KW thermophysical characteristics KW operational control KW oil degradation KW diagnostics JO INDUSTRIAL THERMAL POWER ENGINEERING AU Vernigora, E.R. AU Ivannikov, V.A. AU Shvyrev, A.N. AU Snyatkov, E.V. AU Makhachov, S.M. PY 2026 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov