TY CONF TI APPLICATION OF ASPIRATION METHOD IN MEASUREMENT VOLUMETRIC ACTIVITY OF RADON IN THE ENVIRONMENT KW radon KW radiometry KW radiation safety standards KW daughter decay products KW Markov method KW equivalent equilibrium volume activity JO MODELING INFORMATION SYSTEMS AND TECHNOLOGIES AU Khvorykh, A.M. AU Yudina, N.Y. AU Popov, V.A. AU Urunov, S.H. PY 2024 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov