Recent experiments by Baxter et al. showed the existence of density waves in granular material flowing out of a hopper. We show, using Molecular Dynamics Simulations, that this effect is a consequence of static friction and find that these density fluctuations follow a 1/f spectrum. The effect is enhanced when the opening angle of the hopper decreases.

Hanjeli (Coixlacryma-jobiL.) is a cereal plant which has potential in producing carbohydrate. The high nutrient content of this not been utilized optimally. In Indonesia, most the hanjeli seed peeling processes are still using manual way (pounding), so after process we have to do seeds and peel separating process. purpose research devise filter machine occupied results with vibrating screen adj...

The struggle for gender equality ranks as one of our century's defining movements. This struggle has won women in Canada and around the developed world the right to vote, to own property, to earn an education, and to work outside the home for wages. It has also won them the right to physical safety within their own homes. Where men once had the legal right to beat their wives with a stick no th...

Organic farming is now recognized as the best known alternative to conventional agriculture, where cultivation and raising of crops quality food grown without any harm soil health, environmental human being microorganism present in soil. Efficient organic nutrient supply plant adequate quantities sustain most growth yield while minimizing affected by use large inorganic fertilizers pesticides w...

The discharge rate of coarse powders (mean particle size >500 pm) from bunkers without aeration can be described by both empirical relations and theoretical models. In the case of small particles the discharge rate is largely overestimated. As the powder dilates during flow a negative pressure gradient develops near the hopper outlet, inducing an air flow into the hopper. This extra drag force ...

Prior studies at Purdue University have shown that PTO entanglements occur most frequently on portable grain augers. A research project was conducted to measure operator exposure to PTO components and document work patterns during the use of grain augers. Information on the methodologies used to measure operator exposure is presented along with data on exposure to conventional grain augers whil...