Berbers live in groups scattered across North Africa whose origins and genetic relationships with their neighbours are not well established. The first hypervariable segment of the mitochondrial DNA (mtDNA) control region was sequenced in a total of 155 individuals from three Tunisian Berber groups and compared to other North Africans. The mtDNA lineages found belong to a common set of mtDNA hap...

Aerosols are among the most important of atmospheric pollutants observed like the microscopic particulate matter in the lower parts of the troposphere. The main purpose of this study is introducing a new method based on satellite images processing results and nonlinear analysis (fractal based) to investigate the origin and dynamical mechanism of aerosols distribution in North Africa and the Mid...

From the first reported case of Coronavirus disease 2019 (COVID-19) on December 30, 2019 in Wuhan, China, the number of confirmed cases of the disease has been increased continuously and exponentially up to now. The event has emerged as a clear threat to global health such that the World Health Organization (WHO) officially declared the outbreak of the disease a pandemic on March 11, 2020. The ...

Human schistosomiasis is one of the most common Neglected Tropical Diseases (NTDs); it is an intravascular parasite caused by the trematode blood fluke (Schistosoma). Most human infections are caused by S. haematobium, S. mansoni, and S. japonicum. An estimated total of 237 people are infected worldwide, and 732 million people are at risk of being infected. In the Middle East and North Africa (...

Research on Women's Health in Africa: Issues, Challenges, and Opportunities Chimaraoke O. Izugbara & Eleanor Krassen covan a African Population and Health Research Center, Nairobi, Kenya b Department of Social Work, University of Gothenburg, Gothenburg, Sweden c School of Public Health, University of Witwatersrand, Johannesburg, South Africa d Department of Sociology & Anthropology, University ...

banana xanthomonas wilt is a systemic disease of banana plants. we investigated the risk of spreading xanthomonas campestris pv. musacearum (xcm) through asymptomatic mature bunches. samples of banana fingers and rachis from markets within kampala, uganda and at border points of uganda with dr congo, tanzania, rwanda and kenya were tested for the presence of xcm through recovery of the bacteriu...

Introduction Conclusions References Tables Figures Back Close Abstract Introduction Conclusions References Tables Figures Back Close Abstract Long-term and large-scale correlations between Advanced Very High-Resolution Ra-diometer (AVHRR) aerosol optical depth and International Satellite Cloud Climatology Project (ISCCP) monthly cloud amount data show significant regional scale relationships be...

Drosophila melanogaster spread from sub-Saharan Africa to the rest of the world colonizing new environments. Here, we modeled the joint demography of African (Zimbabwe), European (The Netherlands), and North American (North Carolina) populations using an approximate Bayesian computation (ABC) approach. By testing different models (including scenarios with continuous migration), we found that ad...