Three strains of facultatively anaerobic thermotolerant and moderately halophilic bacteria were isolated from two Jordanian hot spring locations. The novel Bacillus strains were short rods, Gram-positive, motile and spore formers. The strains were capable of anaerobic (but not aerobic) growth at 63C, moderately halophilic, able to grow at NaCl concentration range of 12 15 % and at temperatures ...

از تحولات مهم اواخر دوره صفویه در جنوب ایران، به ویژه بعد از سقوط این سلسله، مهاجرت و قدرت­گیری قبایل متعدد عرب در این منطقه بود. این گروه های قبیله ایِ ساکن سواحل جنوبی خلیج فارس، به دلایل مختلف تمایل داشتند در سواحل شمالی مستقر شوند. در شرایطی که در جنوب کشور، به خصوص در نواحی بندری و ساحلی خلیج­فارس، خلأ قدرت وجود داشت و بر اثر آن ثبات سیاسی در این حوزه حاکم نبود، زمینه برای مهاجرت و رشد این ...

Face recognition is important in human identification. The biological recognition technique acts as a good method and broad applications in security areas. This work presents a method to improve the face recognition accuracy using a combination of Principal Component Analysis (PCA), and Wavelet Transform. Wavelet Transform is used to decompose the input image with different levels and rearrange...

صخلملا Infertility affects 15% of couples seeking children worldwide and male factor is evident in about 30-50% of the cases. To assess the effect of sperm chromatin integrity on the outcomes of intracytoplasmic injection, sperm DNA compactness was evaluated by acridine orange staining in 40 fertile and 44 infertile men attending one infertility clinic. The results showed no significant differe...