TY JOUR TI Systematic approach to study on upgrading the logging machines KW pneumatic cylinders system of rotation of the column KW linear oppositely scheme KW system of solutions. JO Actual directions of scientific researches of the XXI century: theory and practice AU Kamalova, N.. AU Evsikova, N.. AU Popikov, V.P. AU Fursov, S.. PY 2015 IS 3 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov