Institution
University of Khartoum
Education•Khartoum, Khartoum, Sudan•
About: University of Khartoum is a education organization based out in Khartoum, Khartoum, Sudan. It is known for research contribution in the topics: Population & Malaria. The organization has 5103 authors who have published 6431 publications receiving 107039 citations. The organization is also known as: جامعة الخرطوم & UofK.
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TL;DR: In this article, the authors report experiences with applying one such approach, the practice of systematic literature review, to the published studies relevant to topics within the software engineering domain, and some lessons about the applicability of this practice to software engineering are extracted.
1,866 citations
TL;DR: In this article, a detailed review has been conducted to highlight different related aspects to the biodiesel industry, including, biodiesel feedstocks, extraction and production methods, properties and qualities of biodiesel, problems and potential solutions of using vegetable oil, advantages and disadvantages of biodies, the economical viability and finally the future of the future biodiesel.
Abstract: As the fossil fuels are depleting day by day, there is a need to find out an alternative fuel to fulfill the energy demand of the world. Biodiesel is one of the best available resources that have come to the forefront recently. In this paper, a detailed review has been conducted to highlight different related aspects to biodiesel industry. These aspects include, biodiesel feedstocks, extraction and production methods, properties and qualities of biodiesel, problems and potential solutions of using vegetable oil, advantages and disadvantages of biodiesel, the economical viability and finally the future of biodiesel. The literature reviewed was selective and critical. Highly rated journals in scientific indexes were the preferred choice, although other non-indexed publications, such as Scientific Research and Essays or some internal reports from highly reputed organizations such as International Energy Agency (IEA), Energy Information Administration (EIA) and British Petroleum (BP) have also been cited. Based on the overview presented, it is clear that the search for beneficial biodiesel sources should focus on feedstocks that do not compete with food crops, do not lead to land-clearing and provide greenhouse-gas reductions. These feedstocks include non-edible oils such as Jatropha curcas and Calophyllum inophyllum , and more recently microalgae and genetically engineered plants such as poplar and switchgrass have emerged to be very promising feedstocks for biodiesel production. It has been found that feedstock alone represents more than 75% of the overall biodiesel production cost. Therefore, selecting the best feedstock is vital to ensure low production cost. It has also been found that the continuity in transesterification process is another choice to minimize the production cost. Biodiesel is currently not economically feasible, and more research and technological development are needed. Thus supporting policies are important to promote biodiesel research and make their prices competitive with other conventional sources of energy. Currently, biodiesel can be more effective if used as a complement to other energy sources.
1,496 citations
University of Maryland, College Park1, Max Planck Society2, University of California, Los Angeles3, University of Ferrara4, University of Pennsylvania5, University of Bamako6, University of Khartoum7, Stellenbosch University8, Muhimbili University of Health and Allied Sciences9, Dartmouth College10, Kenya Medical Research Institute11, National Institutes of Health12, Marshfield Clinic13, Vanderbilt University14
TL;DR: A detailed genetic analysis of most major groups of African populations is provided, suggesting that Africans represent 14 ancestral populations that correlate with self-described ethnicity and shared cultural and/or linguistic properties.
Abstract: Africa is the source of all modern humans, but characterization of genetic variation and of relationships among populations across the continent has been enigmatic. We studied 121 African populations, four African American populations, and 60 non-African populations for patterns of variation at 1327 nuclear microsatellite and insertion/deletion markers. We identified 14 ancestral population clusters in Africa that correlate with self-described ethnicity and shared cultural and/or linguistic properties. We observed high levels of mixed ancestry in most populations, reflecting historical migration events across the continent. Our data also provide evidence for shared ancestry among geographically diverse hunter-gatherer populations (Khoesan speakers and Pygmies). The ancestry of African Americans is predominantly from Niger-Kordofanian (approximately 71%), European (approximately 13%), and other African (approximately 8%) populations, although admixture levels varied considerably among individuals. This study helps tease apart the complex evolutionary history of Africans and African Americans, aiding both anthropological and genetic epidemiologic studies.
1,376 citations
TL;DR: A genotype-phenotype association study in Tanzanians, Kenyans and Sudanese and identified three SNPs that are associated with lactase persistence and that have derived alleles that significantly enhance transcription from the LCT promoter in vitro, providing a marked example of convergent evolution due to strong selective pressure resulting from shared cultural traits.
Abstract: A SNP in the gene encoding lactase (LCT) (C/T-13910) is associated with the ability to digest milk as adults (lactase persistence) in Europeans, but the genetic basis of lactase persistence in Africans was previously unknown. We conducted a genotype-phenotype association study in 470
1,345 citations
University of Cambridge1, University of the Basque Country2, National Autonomous University of Mexico3, University of Córdoba (Spain)4, Corvinus University of Budapest5, University of Southern Denmark6, University of Gothenburg7, University of East Anglia8, Lund University9, University of Kiel10, United Nations11, Helmholtz Centre for Environmental Research - UFZ12, University of Khartoum13, King Abdulaziz City for Science and Technology14, University of Washington15, University of Oxford16, Ministry of Forestry17, University College Dublin18, National University of Cordoba19, Carthage University20, University of Chile21, Harvard University22, Norwegian University of Life Sciences23, University of Pretoria24, University of Antwerp25, Wetlands International26, Universidade Federal Rural do Rio de Janeiro27, International Union for Conservation of Nature and Natural Resources28, Council for Scientific and Industrial Research29, University of Western Australia30, National University of General Sarmiento31, Calcutta Institute of Engineering and Management32, European Commission33, Government of Canada34, Finnish Environment Institute35, Pontifical Catholic University of Rio de Janeiro36, Federal University of Rio de Janeiro37, International Institute of Minnesota38, Victoria University of Wellington39, Indian Institute of Forest Management40, University of Tokyo41
TL;DR: In this paper, the authors present the rationale for the inclusive valuation of nature's contributions to people (NCP) in decision making, as well as broad methodological steps for doing so, and argue that transformative practices aiming at sustainable futures would benefit from embracing such diversity, which require recognizing and addressing power relationships across stakeholder groups that hold different values on human nature-relations and NCP.
985 citations
Authors
Showing all 5134 results
| Name | H-index | Papers | Citations |
|---|---|---|---|
| Albert D. M. E. Osterhaus | 124 | 955 | 83678 |
| Mark Achtman | 89 | 246 | 30746 |
| Peter J. Lea | 73 | 271 | 18856 |
| Dominique A. Caugant | 70 | 298 | 22245 |
| Lam-Son Phan Tran | 68 | 251 | 18220 |
| Graeme C.M. Black | 64 | 274 | 15554 |
| Newell W. Johnson | 62 | 312 | 13250 |
| Afaf Kamal-Eldin | 60 | 221 | 12040 |
| Piet A. Kager | 57 | 172 | 7997 |
| Gabriele M. König | 55 | 307 | 10374 |
| Elfatih A. B. Eltahir | 49 | 182 | 9709 |
| Angela Clow | 49 | 181 | 9980 |
| Osama A. Mohammed | 47 | 654 | 9992 |
| Isam A. Eltoum | 46 | 138 | 7561 |
| Mustafa A. Salih | 46 | 260 | 8480 |