Volume 17 Issue 3
Published: 2006-02-01
Contents
Article
X-ray Hazard from Colour Television Sets and Video Display Terminals
Qusay KH. AL, Mazin F. Mahrok
Measurement and assessment of dangerosity of X- ray leakage from coloured television (TV) and video display terminals (VDT) are attempted. Three different techniques have been used (X-ray film,...
Mass Attenuation of Gamma Photons in Special Lead Glass that Can be Used in Radiation Shielding Windows
Firas M. Fathi
Three samples of special lead glass are suggested for radiation protection and radiation shielding. Each one of these samles consist of seven oxides (Lead Oxide, Silicon Oxide, Barium Oxide, Sodium...
Calculation of The Relative Tray Transmission Factor For The Co-60 Teletherapy Unit
Rawaa N. Naif
Relative tray transmission factor (RTF) have been determined for two types of trays as a function of field size and source surface distance (SSD) for Co-60 gamma ray beam with energy (1.25 MeV)....
Effect of Altitude and Type of Clouds on Transmissivity of Solar Radiation Intensity in Mosul City
Yussra M. Abdullah, Waleed I. Al-Rijabo
This research investigates the effect of the different types of low, middle and high clouds on the intensity of solar radiation received from these clouds in Mosul City during the winter and spring...
Calculation of Thermal Diffusion Factor αT for Liquid Mixture in a Two Bulbs System
Saffaa Aldeen A. Al-Taie, Jasim M. Rijab, Anwar M. Al-Faydhi
In this study a two bulbs system have been designed and constructed we have design and construct to demonstrate the separation of Ethanol Distilled water liquid operation (50% for each). The...
The Magnetization of the Single Polepiece Magnetic Electron Lens Using Different Coil Models
Abdullah E. Al-Abdullah, Muna A. Al-Khashab
New models of coil geometry are proposed to energize the single polepiece magnetic electron lens. Systematic studies have been applied to determine the magnetic and optical properties for a set of...
The Effect of Pressure on the Crystal Structure and Critical Temperature of the Superconductor YBCO
Bashar B. Jaro, Bassam M. Mustafa
The effect of pressure on the crystal structure and the transition temperature of the high temperature superconductor YBa2Cu3O7-x (x = 1, 0.5 and 0 ) was studied. Main force of interaction is the...
The Electron Optical Properties of the Round Magnetic Electron Lens
Abdullah E. Al-Abdullah
Five magnetic electron lenses have been suggested. Each one has round cross section of the iron circuit and of the energizing coil. The axial magnetic flux density distribution and the trajectory...
Infra-Red Absorption Spectra Study of Some Amphibole Minerals
Yasir A. Al-Jawady, Marwan Z. Al-Tai, Farouk A. Kasir
Infrared spectra of some amphibole minerals show that the absorptivity of the fundamental vibrational OH band is strongly wave number dependent. The investigated have been done on sample...
Total Efficiency and Output Power of Nd:YAG Laser with Spatial Interaction Efficiency Factor
Watfa K. Younis, Farouk A. Kasir
Optimum total efficiency and output power were derived for Nd:YAG laser with symmetrical resonator configuration, taking into account a new interaction factor called spatial interaction efficiency...
Sulphidation Resistance of Nickel-Aluminide Coatings on Austinitic Stainless Steel AISI 321
Edrees E. Ghadeer, Moayad A. Mohammed
Nickel aluminde coatings were performed on austinitic stainless steel base alloy (321AISI) by packcementation method. Nickel was used as electrodeposition coating before aluminization. Hot...
