Julius Maima Ogola Associate Professor, Department of Mechanical and Manufacturing Engineering, University of Nairobi Contact information Department of Mechanical and Manufacturing Engineering, University of Nairobi P.O Box 50939-0020 ( Personal) Or: P.O Box 30197-00100 (office) Nairobi, Kenya Tel: +254-20-318262 Cell: +254-20-733-952777 E-mail: julius.ogola@uonbi.ac.ke / Julius.maima@gmail.com