2014-11

Duhok, pure and engineering sciences (القضية : 1) (الحجم : 17)

The current voltage characteristics of glow discharge has been measured experimentally. from these characteristics the electrical conductivity was calculated at different values (0.3 and 60mA) or from (0-45.4154 Micro Tesla) of transverse magnetic field. also we studied the effect of transverse magnetic field on (I-V) characteristics. the electrical conductivity, and the resistance of the mercury discharge at constant gas pressure (0.75torr). The results show the magnetic field on the (I-V) for glow discharge is analouges completely to abnormal discharge. The average voltage increases while the current decreases with transverse magnetic field and this lead to decrease the electrical conductivity. and the resistance glow discharge is increases with the electric current magnetic field.

2014-06

International Journal of Recent Research and Review (القضية : 2) (الحجم : 7)

Samarium isotopes (Z=62) lie in the traditional rotational to transitional-spherical region that occurs at the range of deformed nuclei. Energy levels, Electromagnetic transitions B(E2), B(M1), mixing ratio   1/2 ME  and monopole transitions   0EB for the selected transitions in 152-154Sm are calculated in the frame work of collective models proton-neutron Interacting boson model (IBM-2) and Dynamic deformation model (DDM). The results obtained for 152154Sm are reasonably in a good agreement with the known experimental results. Keywords- Interacting boson model; dynamic deformation model; electromagnetic transition probabilities; mixing ratios; electric monopole transitions.

2013-05

International Journal of Engineering Research and Development (القضية : 3) (الحجم : 7)

Glazed buildings directly exposed to the sun become unbearably hot during summer and cold during winter. Huge amounts of energy are required to keep them comfortable. Application of thermal insulation such as Window films significantly reduces energy required for heating and cooling. A Window film can block a significant amount of the sun's heat, reducing the load on air conditioner for the buildings. In this study, a test wooden cabinet was built as a building simulation. The results of an experimental investigation aimed at assessing the performance of thin films windows in a wooden cabinet are presented. The research is performed under real weather conditions. Experimental tests are carried out as a function of time, and weather conditions. The data are integrated with spectrophotometric measurements. Concerning the environmental issues, the reduction of carbon dioxide (CO2) due to save in electrical energy by window film was calculated.

2012-12

International Journal of Scientific & Engineering Research (القضية : 3) (الحجم : 12)

From the E-Gamma Over Spin (E-GOS) curve and the energy level ratios, we have deduced that the 104-110Mo isotopes lies between the vibrational U(5) and axial deformed rotor SU(3) limits and most of them display the X(5) symmetry features. We have compared the results obtained by interacting boson model IBM-2 for the above isotopes with those of the X(5) limit and then given a clear description about the validity of the Hamiltonian parameters used in this study.

2011-12

Koya university (الحجم : 21)

The Barium isotopes 132-134 in U(5)-U(6) transition region were investigated. for these nuclei the energy levels and reduced transition probability B(E2) were calculated within framework of interacting boson model (IBM-1) and the critical point symmetry E(5). The results are compared to the experimental data.it is shown that there is an acceptable agreement between the present results and the experimental one