Results 251 to 260 of about 5,905,435 (301)

PARTICLE SHAPE IN THIXOTROPIC SUSPENSIONS

Canadian Journal of Chemistry, 1951
Several equations have been proposed that predict the shape of suspended particles when the viscosity of a suspension of known concentration is measured. These are not applicable to suspensions showing thixotropy, owing to the dependence of the measured viscosity on the shear rate used. However, by using viscosity values that have been extrapolated to
A F, SIRIANNI, G B, MOSES, I E, PUDDINGTON   +2 more
openaire   +2 more sources

Effect of Particle Shape on Constitutive Relation: DEM Study

, 2020
The influence of particle shape was evaluated under drained and undrained (constant volume) condition using three-dimensional (3D) cubical assemblies of spheres, ellipsoids, and cluster of ...
H. Nguyen, M. Rahman, A. Fourie
semanticscholar   +1 more source

A particle shape extraction and evaluation method using a deep convolutional neural network and digital image processing

Powder Technology, 2019
Acquiring particle shapes from raw particle images with complex backgrounds is a prerequisite for particle shape evaluation, yet it is a challenging task. In this study, a systematic framework for particle extraction and shape analysis is developed using
Zhengyu Liang, Zhi-hong Nie, Aijun An, Jian Gong, Xiang Wang   +4 more
semanticscholar   +1 more source

Shape Factors for Airborne Particles

American Industrial Hygiene Association Journal, 1971
Shape factors for dry aerosol particles generated from 1% solutions by weight of sodium chloride, uranine, or combinations of these two compounds were measured. A factor was obtained for each aerosol, relating particle projected area diameter to aerodynamic diameter, mass, and resistance to viscous flow. The density of dry uranine aerosol particles was
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Particle shape-induced radial segregation of binary mixtures in a rotating drum

Powder Technology, 2019
Rotating drums are widely used in various processes such as mixing, coating and drying, where particle segregation remains one of the major concerns. In the past, most of the studies focus on the size or density induced segregation with the assumption ...
Siyuan He, J. Gan, D. Pinson, Zongyan Zhou   +3 more
semanticscholar   +1 more source

Particle shape consideration in numerical simulation of assemblies of irregularly shaped particles

Particuology, 2011
Abstract The mechanical behavior of granular materials depends much on the shape of the constituent particles. Therefore appropriate modeling of particle, or grain, shape is quite important. This study employed the method of direct modeling of grain shape ( Matsushima & Saomto, 2002 ), in which, the real shape of a grain is modeled by combining ...
Saba Abedi, Ali Asghar Mirghasemi
openaire   +1 more source

Re-recognizing the impact of particle shape on physical and mechanical properties of sandy soils: A numerical study

Engineering Geology, 2019
The particle shape created by geological processes is an essential characteristic that determines the physical and mechanical properties of sandy soils.
Zhichun Lu, Aiguo Yao, Aijun Su, Xingwei Ren, Qingbing Liu, S. Dong   +5 more
semanticscholar   +1 more source

Advances in particle shape engineering for improved drug delivery.

Drug Discovery Today, 2019
Spherical particles such as liposomes and microspheres are the most common and extensively applied drug vehicles. However, researchers have come to realize the superiority of nonspherical nanoparticles.
Yi-wei Yang, Di Nie, Yuan Liu, Miaorong Yu, Yong Gan   +4 more
semanticscholar   +1 more source

Three-dimensional shape characterization of fine sands and the influence of particle shape on the packing and workability of mortars

Cement & Concrete Composites, 2019
This paper studies a selection of fine sands, their particle shape and its effect on the plastic properties of mortars via the influence on the workability and packing of cementitious mixtures.
Pierre Estephane, E. Garboczi, J. Bullard, Ó. Wallevik   +3 more
semanticscholar   +1 more source

Shape separation of particles

Powder Technology, 1992
Abstract The separation of particles according to shape is necessary for improving the quality of powder products.
Masami Furuuchi, Keishi Gotoh
openaire   +1 more source