In the automotive industry, mechanical grinding is employed at finishing line rectification to remove defects left over from upstream, which may also result in microstructure modification within near-surface region of work piece and, consequently, affects its corrosion performance. The present investigates influence on and behaviour Al–Si–Mg (A356) alloy castings order advance understanding pot...

? Fine roots and mycorrhizal fungi may either stimulate leaf litter decomposition by providing free-living decomposers with root-derived carbon, or slow through nutrient competition between saprotrophic fungi. We reduced the presence of fine their associated in a northern hardwood forest New Hampshire, USA soil trenching. Plots spanned gradient from 96% arbuscular (AM) associations to 100% ecto...

In this study, an annular jet pump optimization method is proposed based on RBF (Radial Basis Function) neural network model and NSGA-II (Non-Dominated Sorting Genetic Algorithm) algorithm to improve the hydraulic performance of applied in submarine trenching dredging. Suction angle, diffusion area ratio flow were selected as design variables. The computational fluid dynamics (CFD) was used for...

In order to improve the opener of seeder and its lightweight structure, a new type is designed. The overall structure working principle single-ditch double-row are analyzed, structural parameters machete cutting soil guide board designed optimized. Using penetration angle included as test factors, field experiments were conducted. As indexes, resistance, sowing coefficient variation, depth vari...

Le cahārṭāq de Bazeh-Hur est un des rares monuments cette espece connus aujourd'hui dans le nord-est l'Iran. H.G. Bellew (1874) & Ernst Diez (1923) ont ete les premiers a l’identifier comme temple du feu sassanide. Cependant, ce jour, il n'y eu pas preuve definitive l'appui idee. Que n'etait bâtiment isole cela etait deja visible sur plans publies par E. Herzfeld (“Damascus: studies in architec...