In this paper, the theoretical cross section in pre-equilibrium nuclear reaction has been studied for the reaction  at energy 22.4 MeV. Ericson’s formula of partial level density PLD and their corrections (William’s correction and spin correction) have been substituted  in the theoretical cross section and compared with the experimental data for  nucleus. It has been found that the theoretical cross section with one-component PLD from Ericson’s formula when  doesn’t agree with the experimental value and when . There is little agreement only at the high value of energy range with  the experimental cross section. The theoretical cross section that depends on the one-component William's formula and on-component corrected to spin PLD formula doesn't agree with the experimental cross section. But in case of theoretical cross section based on two-component Ericson's and William's PLD formulae it has been found that there is acceptable agreement when the exciton number is taken .

Ericson formula represents the first formula, which was suggested to describe the partial level density (PLD) formula in pre-equilibrium region of the nuclear reactions. Then a number of corrections were added to this formula in order to make it more suitable to physical meaning. In this paper, there are two aims to be done: the first aim is to study the correspondence between one and two-components formulae in Ericson, Pauli, and pairing corrections; the second aim is to compare and study the results of Comprehensive formula, which contents with all corrections, with Ericson, Pauli, and pairing formulae. The Comprehensive formula was suggested to simulate the reality. To achieve these aims the 56 Fe and 90 Zr nuclei were chosen and the results showed that the difference between one and two-components formulae was too small which can be neglected. Furthermore, the results strongly recommended that for cross section calculations of the nuclear reaction, one must use Comprehensive formula rather than Pauli formula.

The aim of this research is to know danger of radioactive isotopesthat are found in samples of drugs traded in Iraqi markets. Thesamples are Iraqi Amoxicillin, English Amoxicillin, UAEAmoxicillin, Indian Amoxicillin, Iraqi Paracetamol, EnglishParacetamol, UAE Paracetamol and Indian Paracetamol. By highpurity germanium the activity of the following isotopes 40K, 214Pb,228Ac and 137Cs is measured and the specific activity was used tocalculate the annual effective dose. Then the calculated annualeffective dose values are compared with the allowable annualeffective dose values of each part of digestive channel. This researchconcluded that the measured annual effective dose values are notdangerous.