Al-Sman, Mohamed Khalefa A. Dr. Mohamed K. Al-Saman received his PhD 2018 from Assiut University, Egypt under supervision of Professors Aida Elzawahry, Amdal Erakya and Kamal Abo-Elyousr, my Ms.c from El-Minia University under supervision of Prof. Dr. Omar Ismail Saleh and Prof Dr. Mohsen H. Hassanein. I got my Bs.c from Al-Azhar University, Assiut Branch (2001).