TY - BOOK AU - Olfat Saad Ahmed AU - Abdelhadi Saleh Yousef , AU - Aboubakr A. Ramadan , AU - Ali Y. Ellithi , TI - Assessment and modeling of radiation levels over sinai peninsula Egypt / PY - 2011/// CY - Cairo : PB - Olfat Saad Ahmed , KW - Egypt KW - Radiation levels KW - Sinai peninsula Egypt N1 - Thesis (Ph.D.) - Cairo University - Faculty of Science - Department of Physics; Issued also as CD N2 - The present work deals with the measurements of natural radioactivity levels in air soil and water . The investigation of the behavior of radionuclides ( ²²⁶ Ra series ²³² TH Series , ¹³⁷ Cs and ⁴{u⁰⁰B⁰} K) which may be released from the surrounding nuclear activities through the atmosphere over some selected cities of the sinai peninsula such as Rafah , Elquseima , Elkuntllia , Eloaga , Elsabha , Ainkiddies , Ras Elnaqab , El-tur , Nwebie and Sharm Elsheikh to be reference values used in comparison with any changeable values measured in the future ER -