the equations governing the motion of steel balls and their impact onto shell liners in industrial semi-autogenous grinding (sag) mills are derived in full details by the authors and are used in order to determine the effective design variables for optimizing the working conditions of the mill and to avoid severe impacts which lead to the breakage of sag mill shell liners. these design variable...

The grinding process plays a crucial role in the floatability of mineral. present study proposes scheme to assist flotation separation galena and pyrite by optimizing choice media. effects media (cast iron balls, steel balls containing 18% chromium, 12% chromium) on pulp properties hydrophilicity were evaluated using tests, micro-flotation X-ray photoelectron spectroscopy, adsorption capacity a...

In this work, TiN/Ti(C,N)/Al2O3 multilayer coatings were deposited using an industrial-scale thermal CVD system. Two polymorphs of Al2O3, the stable α- and metastable κ-Al2O3, obtained by deposition specific bonding layers at Al2O3/Ti(C,N) interface. The comparable hardness elastic moduli κ-Al2O3 measured. tribological behavior Al2O3 was studied room temperature 24CrMoV5-1 balls; friction coeff...

Is compassionate killing really psychologically impossible, as the Abhidhamma claims? Previously I discussed a Vinaya case that seemed to show the contrary. Reviewing my conclusions in the light of commentarial literature, Rupert Gethin disagreed and restated the Abhidhamma position that killing can never be motivated by compassion. This paper supports my original conclusions and argues further...

Abstract In this paper the friction and wear of 23CrNi 3 Mo carburized steel under water lubrication were studied. The properties sliding with stainless steel, GCr15, Al 2 O ZrO balls analyzed by tribometer, 3-D topography SEM. results show that compared other materials, carburizing have better tribological properties. Compared , depth is reduced 41% at load N 50% 10 N. range 2N-10N, rate lowes...

Negative association for a family of random variables (Xi) means that for any coordinate–wise increasing functions f, g we have Ef(Xi1 , . . . , Xik )g(Xj1 , . . . , Xjl ) ≤ Ef(Xi1 , . . . , Xik )Eg(Xj1 , . . . , Xjl ) for any disjoint sets of indices (im), (jn). It is a way to indicate the negative correlation in a family of random variables. It was first introduced in 1980s in statistics, and...

Computer music presents particular challenges for the analyst. This paper discusses the approach taken by the author to tackle these issues in analysing Jonathan Harvey’s work Mortuos Plango, Vivos Voco [2]. The focus of the paper is not the analysis itself but the problems posed for the analyst by such a work and the methods used to try and resolve them. It describes a number of different tech...