A chute was designed following the principles of Theory Sampling to minimize variations in powder flow and provide all particles flowing blends with same opportunity being selected as a sample. The design also reduces thickness allow analysis higher portion by near infrared spectrometer. that flowed through had Carr’s index values fluctuated between 23 25 percent, indicating passable flowabilit...

Several methods exist for measuring forest canopies following disturbance, and the biases and differences among them are unclear. We compared techniques for measuring the northern hardwood forest’s canopy structure at the Hubbard Brook Experimental Forest, New Hampshire, following the severe ice storm of January 5–10, 1998. Methods included leaf area index (LAI) using LI-COR’s LAI-2000, visual ...

Trapezoidal labyrinth weirs offer significant flow magnification for the available width of approach channel and that of the downstream chute. These types of weirs may find great utility and hence will have to be designed and provided for river linking projects. There are many factors such as head to crest height ratio, angle of side walls, vertical aspect ratio, apex width and approach and con...

This paper presents a classification of cavitation damage levels on spillway surface. Two important factors influencing cavitation damage have been considered in this study, flow velocity and cavitation index. Based on these factors, five different damage levels from no cavitation damage to major cavitation damage have been determined. The method was applied to data of the Shahid Abbaspour dam ...

Tire de sa these, le livre Pierre Guidi couvre un demi-siecle l’histoire l’Ethiopie, par dela la Revolution 1974, depuis restauration Hayla Sellase, en 1941, jusqu’a chute Mangestu Maryam, 1991. Il demontre combien les politiques d’education decidees a Addis Ababa contribuerent au faconnement d’une « conscience nationale ethiopienne » Walaytta. Ce royaume du sud-ouest conquis Menilek personne 1...

Monitoring and providing warnings for coal mine rockburst disasters is a worldwide problem. Several accidents have occurred in 1301 belt transport chute near 1300 fully mechanized caving face. To address this issue, an empirical study of the occurrence mechanism rockbursts adjacent area top-coal face was carried out. This paper mainly addresses following issues: (1) based on microseismic monito...

Collapse sinkholes are common in areas where gypsum strata underlie rock that is incompetent to bridge the cavities created by groundwater dissolution of gypsum. On floodplains these can be obscured due fill overbank deposits, and channels tend migrate towards larger enclosed depressions. This study utilises GIS analyse influence exerted small collapse on channel dynamics alluvial River Ure, UK...