TY CONF TI APPROACHES TO DETERMINING THE AREA OF THE VALVE HOLE OF A HYDRAULIC PULSATOR KW vegetation KW impact KW hydropulsation mechanism KW modeling KW hole KW valve JO MODERN FORESTRY COMPLEX OF THE COUNTRY: INNOVATIVE DEVELOPMENTS AND RESEARCH AU Popikov, P.I. AU Platonov, A.A. PY 2024 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov