TY JOUR TI OPTIMAL VALUES OF LINEAR SPEED OF THE CONVEYOR SIEVE FOR GRAIN COMBINE HARVESTER CLEANING KW combine KW cleaning KW conveyor KW sieve KW heap KW grain KW impurities KW density KW feed KW thresher JO Bulletin of KSAU AU Bekarov, A.D. AU Mishkhozhev, V.K. AU Gabaev, A.K. PY 2018 IS PB Krasnoyarsk State Agrarian University