The defense of PhD thesis of researcher/ Ahmed Khairy Mohammed was held on September 19, 2022 at the South Valley University Hotel in Faisal, Cairo at 12:00 PM .The thesis defense committee consisted of:
Prof .Dr. Fawzy Abdel Ghany (Sohag University).
Prof. Dr. Sherif Darwish (Cairo University).
Prof .Dr. Abdel Aziz Alsayed (Beni Suef University).
Prof .Dr. Mohammed Zain .
Prof .Dr. Helmy Mehaseb (South Valley University).