Demoz Gebre

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OBJECTIVE Tuberculosis (TB) a chronic infectious disease is caused in most cases by Mycobacterium tuberculosis (MTB) which are acid fast, rod shaped bacilli. Occasionally TB can also be caused by Mycobacterium bovis (M. bovis) and Mycobacterium africanum (M. africanum). TB is one of the major causes of morbidity and mortality in the horn of Africa with(More)
In August of 1998, a team of Stanford researchers demonstrated the e ectiveness of the Wide Area Augmentation System (WAAS) to guide aircraft through precision approaches in Alaska. The ight trials focused on the capital city of Juneau where poor weather, severe terrain, and a lack of traditional navigation aids cause problems for pilots. Overall, 48(More)
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