1. Radiation Research of Polymer Department, Industrial Irradiation Division, National Centre for Radiation Research and Technology (NCRRT), P.O. Box 29, Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt
2. Radiation Chemistry Department, Radiation Research Division, National Centre for Radiation Research and Technology (NCRRT), P.O. Box 29, Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt
3. Solid state physics and accelerators department, Industrial Irradiation Division, National Centre for Radiation Research and Technology (NCRRT), P.O. Box 29, Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt
4. Drug Radiation Research Department, Biotechnology Division, National Center for Radiation Research and Technology (NCRRT), P.O. 29, Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt