全部文献期刊会议图书|学者科研项目
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作者:Negussie Retta , Cherinet Abuye ...
来源:[J].International Journal of Environmental Research and Public Health(IF 1.998), 2016, Vol.13 (8)
摘要:An observational study was conducted to determine dietary fluoride intake, diet, and prevalence of dental and skeletal fluorosis of school age children in three fluorosis endemic districts of the Ethiopian Rift Valley having similar concentrations of fluoride (F) in drinking wate...
作者:Negussie Retta
来源:[J].Cement and Concrete Research(IF 3.112), 1995, Vol.25 (3), pp.553-560
摘要:Abstract(#br)Water extract from Endod retards both the initial and final setting times of Portland pozzolana cement paste. For a given water cement ratio (0.66) the slump of the concrete mix containing 0.00, 0.02, 0.05, and 0.08% of Endod increases from 2 to 9 mm and 3 to 11% san...
作者:Negussie Retta
来源:[J].Journal of Cleaner Production(IF 3.398), 1999, Vol.7 (6), pp.409-412
摘要:Abstract(#br)In this article, cleaner industrial production (CIP) from the Ethiopian perception, the conditions for implementation, the barriers encountered during implementation and the strategies used are discussed. In addition, the outcome of the project is highlighted.(#...
作者:... Donald A. House , Negussie Retta , Lars I. Elding
来源:[J].Inorganica Chimica Acta(IF 1.687), 2002, Vol.331 (1), pp.98-108
摘要:Abstract(#br)Reduction of the model platinum(IV) complexes cis -[PtCl 4 (NH 3 ) 2 ] ( 1 ), trans -[PtCl 4 (NH 3 ) 2 ] ( 2 ), trans -[PtCl 2 (en) 2 ] 2+ ( 3 ), trans -[PtBr 2 (NH 3 ) 4 ] 2+ ( 4 ), [PtCl 6 ] 2− ( 5 ), and [PtBr 6 ] 2− ( 6 ) with l -ascorbic acid (H 2 Asc) in 1...
作者:Negussie Retta , Lennart Mathiasson
来源:[J].Chemosphere(IF 3.137), 2008, Vol.72 (8), pp.1181-1187
摘要:Abstract(#br)Upper Awash Agro Industry Enterprises (UAAIE) is one of the major state farms in Ethiopia with known large-scale pesticide use. Although organochlorine pesticides (OCPs) have been applied for about three decades, no studies have been carried out on levels of res...
作者:Negussie Retta , Jan Åke Jönsson ...
来源:[J].Bulletin of the Chemical Society of Ethiopia(IF 0.417), 2003, Vol.17 (1), pp.35-43
摘要:2(2-Hydroxyethyl)hydrazino-4-ethylamino-6-isopropylamino-s-triazine (HEATZ), a derivative of 2-chloro-4-ethylamino-6-isopropylamino-s-triazine, atrazine (ATZ) – a well known herbicide has been studied for complex formation with cobalt(II), nickel(II), and copper(II). Analyti...
作者:Mehabaw Getahun Derebe , V.J.T. Raju , Negussie Retta
来源:[J].Bulletin of the Chemical Society of Ethiopia(IF 0.417), 2002, Vol.16 (1), pp.53-64
摘要:Complexes of Mn(II), Fe(III), Co(II), Ni(II) and Zn(II) with an intermediate Schiff base derived from ninhydrin and Α,L-alanine (indane-1,3-dione-2-imine-N-2-propionate, IDIP) were successfully synthesized. All complexes were distinctly colored and were characterized by elem...

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