TY JOUR TI CALCULATION OF VAPOR-LIQUID EQUILIBRIUM BASED ON THERMODYNAMIC MODELS OF ACTIVITY COEFFICIENTS KW activity coefficients KW solutions KW NRTL KW UNIQUAC KW UNIFAC JO Modern Technologies and Scientific and Technological Progress AU Semenov, I.A. AU Shishkin, M.D. PY 2024 IS 2024 PB Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University»