TY JOUR TI EFFICIENCY OF CONTACT PLATES OF RECTIFICATION COLUMNS KW rectification KW poppet columns KW efficiency of plates KW transfer units KW mass transfer coefficients JO Scientific Papers Collection of the Angarsk State Technical University AU Ul'yanov, B.A. PY 2024 IS 2024 PB Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University»