1. Department of Mechanical and Industrial Engineering, Sultan Qaboos University, Al Khod, Oman
2. College of Applied Professions, Palestine Polytechnic University, Hebron, Palestine
3. Department of Medical Laboratories Techniques, Al-Maarif University College, Al-Anbar-Ramadi, Iraq
4. Department of Chemistry, College of Science, Sultan Qaboos University, Muscat, Oman