1. Department of Restorative Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University
2. Department of Environmental Engineering, College of Engineering, Imam Abdulrahman Bin Faisal University
3. Department of Chemical Engineering, King Fahd University of Petroleum & Minerals
4. Center of Research Excellence in Nanotechnology, King Fahd University of Petroleum & Minerals