Particle Shape Evolution in Gas Environments: Particle Shape Control in Supported Metal CatalysisFinally, simple first-order calculations were done to examine the effects of hydrogen, nitrogen, and carbon monoxide on the equilibrium crystal shape of the platinum particles in a supported platinum catalyst...
The present study was aimed to evaluate energy for crushing coal to various size fractions in coal and gas outbursts through theoretical and experimental investigation into the shape of fine coal particles and their equivalent diameter. Theoretical analysis indicates that the shape of a particle has ...
Polyhedral elements are used to model the host particles of arbitrary shape. For a 3D polyhedron, it is not necessary to cover surfaces of the host particle completely. Instead, sides of the host particle should give the full description of the particle shape. Second, a particle-surface collisi...
The purpose of this paper is to study the effects of apex cone shape on particle separation performance of gas-cyclones by experiment and CFD studies. It is found that the optimum apex cone angle is 70°. The minimum 50% cut size was obtained by use of this special apex cone. From the...
By using a water-cooled sampling tube and gas purification analytic system, a hot-state experimental study has been conducted of the gas concentration distribution of a nozzle plane in a gasification furnace. Through an image processing, the flame image was divided into three portions along the di...
2D shape descriptors Size and shape characterization of particles is of key interest in var- are based on “2D variables”, which are determined through image ious fields of science and engineering, including soil and atmospheric analysis of particle projections (also called shadowgraphs or sil...
Phage infections have an important impact on bacterial population dynamics14,15. They require an initial step of adsorption of the viral particle to the host’s cell surface. Since the capsule covers the latter, phage-capsule interactions are key determinants of the success of phage infections. In...
, nanocrystals with cubic shape displayed comparable catalytic activity in both reactions. The shape-dependent catalytic selectivity was due to the fact that the isomerization of trans olefins to cis counterparts is promoted by the (111) facets found only on the platinum tetrahedral particles....
A method is presented to predict the shape of the gas‐particle interface between two plugs of cohesionless particles conveyed pneumatically through a hori... K Konrad - 《Canadian Journal of Chemical Engineering》 被引量: 0发表: 1988年 Hydrodynamic characteristics of a land-based oscillating water...
To evaluate quantitatively the influence exerted by the shape and structure of nonspherical, nonideal particles on the results of single-particle scattered-light size analysis, measurements were conducted with individual particles of different materials (glass, limestone, and quartz). For this purpose, ...