1. Department of Materials and Energy Science and Engineering (MESE), Nelson Mandela African Institution of Science and Technology (NM-AIST), P.O. Box 447, Arusha, Tanzania
2. Department of Electrical and Electronics Engineering, St. Joseph University in Tanzania (SJUIT), P.O. Box 11007, Dar es Salaam, Tanzania
3. Department of Mechanical Engineering, Arusha Technical College (ATC), P.O. Box 296, Arusha, Tanzania