Professor Dr. Rafie Abdullah Munif, a lecturer in the College of Science/Department of Physics, participated in the membership of the oral comprehensive examination committee for PhD students in the Department of Physics - College of Science/Tikrit University. A number of professors with academic titles and extensive experience in the field of scientific research participated in the comprehensive examination committee to ensure scientific sobriety. The exam was conducted smoothly and according to the conditions and requirements of the comprehensive exam approved by the Ministry of Higher Education and Scientific Research. Note that the comprehensive written and oral exam is one of the requirements for doctoral students to move to the research and writing stage