in order to increase the efficiency of the conveyance of the granular solids, a new experimental set-up is designed. the test rig has longitudinal trapezoidal slots in its conveying pipes. through experimentation, a correlation for friction factor in terms of solid mass flow rate, fluid flow rate and froude number is presented. it is shown that the mixture friction factor for pipes with inner t...

ÐIn this paper, we propose new algorithms for accurate nonrigid motion tracking. Given an initial model representing general knowledge of the object, a set of sparse correspondences, and incomplete or missing information about geometry or material properties, we can recover dense motion vectors using finite element models. The method is based on the iterative analysis of the differences between...

abstract   background: recently, small dense low density lipoprotein (sdldl) has been highlighted as a new risk factor for the coronary artery disease (cad).small dense ldls are believed to be atherogenic since these particles are taken up more easily by arterial wall. they are readily oxidized and have reduced affinity for low density lipoprotein (ldl) receptor and increased affinity for arter...

In a compact multiple-input-multiple-output (MIMO) communication systems, the channel capacity of a traditional 4-element uniform linear array (ULA) will decrease rapidly with the increment of the mean angle of arrival (AoA) of the incident waves. We will show first in this paper that this channel capacity decrement is caused by the antenna radiation pattern distortion, which owes to the so-cal...

The condensed matter properties of the nominal terminating element of the halogen group with atomic number 85, astatine, are as yet unknown. In the intervening more than 70 years since its discovery significant advances have been made in substrate cooling and the other techniques necessary for the production of the element to the point where we might now enquire about the key properties astatin...

We study dense cases of several covering problems. An instance of the set cover problem with m sets is dense if there is > 0 such that any element belongs to at least m sets. We show that the dense set cover problem can be approximated with the performance ratio c log n for any c > 0 and it is unlikely to be NP-hard. We construct a polynomial-time approximation scheme for the dense Steiner tree...

The incremental stress-strain relation of dense packings of polygons is investigated by using moleculardynamics simulations. The comparison of the simulation results to the continuous theories is performed using explicit expressions for the averaged stress and strain over a representative volume element. The discussion of the incremental response raises two important questions of soil deformati...