series of undrained monotonic triaxial tests and cone penetration tests were conducted on loose silty sand samples to study correlation between undrained shear strength of silty sands (sus) and piezocone test results. cpt tests were conducted at 27 silty sand samples in calibration chamber. the results indicate that, in low percent of silt (0-30%), as the silt content increases, the undrained s...

in recent decades the expansion of building infractions in many cities of developing countries, regarding one of the most important issues for denizens and urban managers. in most cases, this inordinate development will be challengeable because of cursory control and improprieties management. this study aimed at investigation and evaluation the building infractions, sort of infractions and a co...

403 The Journal of The South African Institute of Mining and Metallurgy JULY/AUGUST 2003 Introduction Coal preparation is used to upgrade run-ofmine coal before it is utilized by the end-user, primarily electric utility power plants. According to Fonseca1, the coal preparation process reduces the amount of noncombustible mineral impurities, acid-rain precursor sulphur-bearing minerals and hazar...

In s tandard models of opt imal de te r rence , which assume perfect in format ion on the par t of the social p lanner , fines domina te ja i l sentences as an ins t rument for pun ish ing crime. In the real world, however, pun i shmen t using prisons is quite common. This pape r provides an explanat ion for that empir ical observation. If cr iminals e i ther have private in format ion about th...

In developing countries cassava starch is produced mostly rurally using artisan methods through wet-way processes that consume as much as 37 m3 of water per processed ton. In comparison, the little industrial production consumes 5 m3 of water per processed ton. These waste waters, highly contaminated, are usually discharged in to the rivers without any treatment. With the aim of industrializing...

Please cite this article in press as: Ogunniy ..., Miner. Eng. (2008), doi:10.1016/j.minen Froth flotation for beneficiation of printed circuit board comminution fines was investigated in this work, via reverse flotation under a scheme described as natural hydrophobic response. With no reagents, the scheme employed variation of kinetic parameters of airflow rate and impeller speed to optimize m...