1. Radiated Pollution Department, Hot Laboratories Centre, Atomic Energy Authority Egypt
2. Reactor Physics Department, Reactor Division, Nuclear Research Center, Atomic Energy AuthorityP. No. 13759Egypt
3. Cyclotron Project, Nuclear Research Centre, Atomic Energy Authority P. No. 13759 Egypt
4. College of Science and Humanities – Al-Quwayiyah-Shaqra University Saudi Arabia