1. Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor, Malaysia
2. Department of Chemistry, Faculty of Science, Sana’a University, Sana’a, Yemen
3. Department of General Science, University of Mosul, Mosul, Iraq
4. Department of Statistics and Informatics, University of Mosul, Mosul, Iraq
5. College of Engineering, University of Warith Al-Anbiyaa, Karbala, Iraq
6. Department of Mathematics, Turabah University College, Taif University, Taif, Saudi Arabia