TY JOUR TI Characteristics of an Experimental Study of a Flat Sieve Subjected to Transverse Vibrations KW flat sieve KW transverse vibration KW parameters KW graphs KW experimental analysis KW degree of separation JO Vestnik of Omsk SAU AU Sabiev, U.K. AU SHumel, I.I. PY 2026 IS PB FSBEI HE Omsk SAU