TY JOUR TI THE ENERGY EFFICIENCY INCREASE OF THE LOW-HEAD HYDROSCHEMES THROUGH HYDRAULIC RAM PUMP INSTALLATION USE KW head hydroscheme KW hydraulic ram pump KW hydraulic ram pump installation KW ram valve KW expendable-drop characteristic JO Bulletin of KSAU AU Bakunin, V.V. AU Ptashkina-Girina, O.S. PY 2014 IS PB Krasnoyarsk State Agrarian University