TY JOUR TI IMPROVING AIR PURIFICATION IN CLEAN ZONE MICROCLIMATE SUPPORT SYSTEMS KW clean room KW air filter KW efficiency KW aerodynamic resistance KW life cycle JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Ulyasheva, V.M. AU Anisimov, S.M. AU Mihaylov, E.V. PY 2019 IS 4 PB Belgorod State Technological University named after V.G. Shukhov