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Characterization and Evaluation of the Mechanical and Physical properties of Tef stem (Eragrostistef (Zucc.)Trotter) 111
gelaw, geta kidanemarim; Tilahun, Daniel; Zegeye, Adamu.
Tef (Eragrostistef (Zucc.)Trotter) is atypical crop growing in most areas of Ethiopia, with the first area coverage. In this study mechanical properties of Tef stem the major four varieties, viz;  Local, Dz-Cr-438- (Kora), Dz-Cr-387/RIL-355(Quncho) and Dz-01-1880 (Guduru) was determined. The factors considered were moisture content, diameter and thickness of the Tef stem and analyze their mechanical properties using Texture Analyzer and Universal Testing Machine. The result indicated that the minimum and maximum value of modulus of elasticity was 0.13 and 2.6 Gpa at  moisture level 8.82% and 16.6%; 1.03 and 3.6Gpa at moisture level 10.32% and 13.79%; 0.85 and 3.22Gpa  at moisture level 7.65% and 12.72%; 1.27 and 3.88Gpa at moisture  level 5.5% and 19.70%...
Tipo: Info:eu-repo/semantics/article Palavras-chave: PhD candidate and Asociate professors Modulus of elasticity; Flexural rigidity; Shear stress; Tef stem; Variety.
Ano: 2019 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5112
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The Effect of threshing units’ design on performance of Teff [Eragrostistef (Zucc.)Trotter] threshers 111
Gelaw, Geta Kidanemariam; Tilahun, Daniel; Adamu Zegeye.
Teff (Eragrostistef (Zucc.)Trotter) is a typical crop growing in most areas of Ethiopia, with the first area coverage. Threshing of teff can be performed indifferent ways; by hand beating, animal trampling and use of stationary threshers. In all cases of teff threshing, separation and cleaning are the most tedious and time consuming activities. In this research, the design effect of a newly developed type threshing unit was compared against SG-2000 stationary thresher. The comparison was focused on two independent variables: feed rate and drum speed, with three levels 275, 325 and 400kg.hr-1; and 900, 1000 and 1200 rpm respectively. The result revealed mean values of the threshing capacity, cleaning efficiency and separation efficiency are 42.30 and 45.81...
Tipo: Info:eu-repo/semantics/article
Ano: 2023 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/8667
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