Ms. Alaa M. A. Hassan and Ms. Abeer. A. M. Hasb successfully defended master’s degree thesis under the supervisory committee of Prof. Dr. Mahmoud A. A. Ibrahim, Prof. Dr. Ahmed K. H. Nohman, and Prof. Dr. Gamal A. H. Mekhemer on 14 October 2018. The theses examination committee consisted of Prof. Dr. Hussein Mohamed Ahmed (Faculty of Science, Cairo University), Prof. Dr. Adel Ahmed Mohamed (Faculty of Science, Helwan University), Prof. Dr. Ahmed K. H. Nohman (Faculty of Science, Minia University), and Prof. Dr. Gamal A. H. Mekhemer(Faculty of Science, Minia University).