M.Sc.

      The aim of this study is the radiation dose assessment of gamma rays-γ and ultraviolet-UV radiation on nuclear track detector-NTDs types CR-39 , Lexan and  LR-115 through measuring the absorbance-A by using uv-visible spectroscopy technique and measuring the spectral deviation of  Fourier transform infrared- FTIR technique .The radiation response  for gamma rays  was measured  at low dose range  1Gy  to 10 Gy  and high dose range  10 Gy  to 195 kGy  .There is gamma ray response for all NTDs used in this study .

This thesis has three main objectives:
The first objective is to study reliability theory of multi-state systems, as well as, some of its basic properties and theoretical results. The second objective is to study the reliability of dynamic multi-state

The main objectives of this thesis may be oriented toward three directions.The first objective is a study, in details, the basic theory of stochastic calculus and study the linear multistep methods for solving