THE INFLUENCE OF WORK ENVIRONMENT AND MOTIVATION ON THE PERFORMANCE OF NURSES AT TAMPAN MENTAL HOSPITAL, RIAU PROVINCE By: Aulia Dwi Prihantanti Email: [email protected] Supervisor: Seno Andri Business Administration Study Program, Department of Administration Science, Faculty of Social and Political Sciences, University of Riau Bina Widya Campus, Jl. HR. Soebrantas Km. 12,…