TY JOUR TI MATHEMATICAL MODEL OF MOTION OF A FOREST SEED MATERIAL PARTICLE IN THE OPERATING CHANNEL OF SEPARATOR KW pneumatic magnetic separator KW seed material KW inductor KW trajectory KW weeds JO Forestry Engineering Journal AU Zelikov, V.A. AU Kozlov, V.G. AU Skrypnikov, A.V. AU Izvekov, E.A. AU Kozlova, E.V. PY 2021 IS 11 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov