The steady state advection-diffusion equation (ADE) has been solved analytically to simulate the dispersion of pollutants in the atmospheric boundary layer (ABL) taking into account the vertical variation of the wind speed and eddy diffusivity. The solution is based on the assumption that the ABL height (h) is divided into sub-layers and within each sub-layer the ADE is solved by using the separation of variables method assuming the mean values of wind speed and eddy diffusivity. The obtained model was used to predict the concentration of Iodine-135 in air around a Research Reactor at Inshas, Cairo Egypt. The statistical analysis that performed between the calculated and experimental values of concentration shows a good agreement between them.
This study was to perform on Zağar dogs which natural dogs genotype of Turkey. The aim of this study was to determine the some morphological and genetic traits were taken from twelve month of age and older, of total 77 Zağar dogs (32 female, 45 male) in different regions of Turkey. The statistically values (X±SE) were, 17.90±0.44 kg for live weight; 50.48±0.46 cm for wither height; 50.09±0.45 cm for rump height; 56.00±0.47 cm for body lenght; 17.59±0.19 cm for chest width; 20.92±0.25 and 57.64±0.57 cm for depth and circumference; 9.72±0.09 and 8.88±0.09 cm for front and behind cannon bone circumference; 23.50±0.17, 9.68±0.10 and 14.17±0.15 cm for head, face and ear length; 10.83±0.14 cm for ear width; 13.44±0.13 and 4.48±0.07 cm for ears and eyes interval; 20.53±0.21 cm for mouth circumference and 35.38±0.36 cm for tail length. Heterozygosity (Ho) value was calculated as 0.745 in Zağar dogs. Find a new haplotype (unspecified in other dog breeds) was determined in the mtDNA D-loop analysis which was called A286 in Zağar genotype. As a result, this research is revealed that Zağar dogs were found to be different as morphological and genetic characteristics from which were grown other dog breeds in Turkey.
The largest cluster of brickworks (228 clay brick kilns) in Egypt is located in Arab Abu Saed area. 50 samples were collected from many factories and were analyzed by HPGe detector. The average activity concentration of U-238, Th-232 and K-40 were 18, 31 and 341 Bq/kg respectively. Internal and external hazard indices were estimated and results show that all samples lead to below exemption limit exposure, external hazard index (Hex) has an average of 0.24, gamma index (Iγ) slightly exceed the permissible limits which met only 0.3 m Sv/y, radium equivalent (Raeq) was 88.5, annual gonadal dose equivalent (AGDE) was 0.29 mSv/y, Alpha index (Iα) was 0.09 and internal hazard index (Hin) was 0.29. The average outdoor absorbed gamma dose rate (Dout) was 44.3 nGy/h which lead to effective outdoor gamma dose (Eout) 0.05 which less than the world’s average of 0.07 mSv/y. It can be concluded that exposure to workers and public in these areas were still within the permissible limits and hence, there isn’t radiological hazard to them. Annual equivalent dose due to all natural radionuclides was ranged between 1.47E-03 (received by pancreas) and 3.16E-03 mSv/y (received by skin), while the effective dose was 1.7E-3 mSv/y.