Khaled Ali is a Lecturer and Researcher in the Department of Physics, Faculty of Science, South Valley University, Egypt. He earned his Ph.D. in Nuclear Physics from Kyoto University, Japan, an M.Sc. in Radiation Physics from South Valley University, a Diploma in Radiation Physics from Al-Minia University, and a B.Sc. in Physics with Excellent with Honor from South Valley University, where he ranked first. Since 2008, he has taught undergraduate and postgraduate courses in physics and supervised M.Sc. and Ph.D. students. His research focuses on nuclear resonance fluorescence (NRF), isotope-selective CT imaging, environmental radioactivity, and radiological risk assessment. He has participated in international collaborations at institutions in Japan, the USA, and Russia, and received the MEXT Scholarship from the Japanese government. Dr. Ali has presented at numerous international conferences, earning best presentation awards, and has published in journals such as Scientific Reports, Environmental Geochemistry and Health, and IEEE Transactions on Nuclear Science. He is a member of the National Network of Radiation Physics in Egypt and actively contributes to nuclear and radiation science research and education.