TY JOUR TI The apparature - technological design process of receiving oxygen enrichment breathing mix development KW breathing mixture KW technological design KW principal technological scheme KW improving the efficiency of the unit recommendations. JO Actual directions of scientific researches of the XXI century: theory and practice AU Chernov, G.. PY 2014 IS 2 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov