منابع مشابه
Bovine Tuberculosis in East Africa
The zoonotic Mycobacterium bovis is a pathogen of significance in the dairy industry in many parts of the world. Although the pathogen primarily affects cattle, it has a wide host range including humans. A cross-sectional study was carried out in three agro-ecological zones of Tanzania, namely the southern highlands zone (SHZ), eastern zone (EZ) and northern zone (NZ), to examine the status of ...
متن کاملIslamist Extremism in East Africa
1 The risk of Islamist extremism in East Africa frequently focuses on Somalia and the violent actions of al Shabaab. Yet local adherents to extremist versions of Islam can now be found throughout the region. As a result, tensions both within Muslim communities and between certain Islamist groups and the broader society have been growing in the region in recent years. These tensions have not eme...
متن کاملAn examination of factors controlling biogenic silica preservation in modern sediments from east-central Lake Tanganyika, East Africa
The biogenic silica (BSi) content of sediments has been used to infer past primary productivity in marine and lacustrine systems (Johnson et al., 2002; Verschuren et al., 2002). Biogenic silica is derived from the fossil remains of diatoms, sponge spicules, and plant phytoliths; however, diatoms make up the overwhelming source of BSi in most aquatic systems. Diatoms are important primary produc...
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ژورنال
عنوان ژورنال: The Geographical Journal
سال: 1907
ISSN: 0016-7398
DOI: 10.2307/1776124