Patrick D. Kinney and The use of the electrostatic classification mance focused on the effect of impuriDavid Y. H. Pui method for sizing monodisperse 0.1 pum ties in the particle-suspending liquid on polystyrene latex (PSL) spheres has the resulting particle diameter. University of Minnesota, been investigated experimentally. The The uncertainty in particle diameter Minneapolis, MN 55455 object...

turbulent mixed convection of a nanofluid (water/al2o3, φ=.02) has been studied numerically. two-phase mixture model has been used to investigate the effects of nanoparticles mean diameter on the flow parameters. nanoparticles distribution at the tube cross section shows that the particles are uniformly dispersed. the non-uniformity of the particles distribution occurs in the case of large nano...

The thickness of the bedload layer is a crucial parameter for evaluating sediment transport rates in open channel flow, but it is often determined empirically. Based on the concept of the hydrodynamic diffusion related to particle-particle interactions, an analytical model is proposed in this study for computing the thickness of the bedload layer. The coefficient of diffusion is assumed to be a...

Particles and solutes are excluded from the vicinity of hydrophilic surfaces, leaving large microsphere-free regions known as exclusion zones (EZs). Prior work had indicated that EZs could extend to distances of up to several hundred micrometers from the nucleating surface. These observations were made on large, extended surfaces, leaving open the question whether EZ size might depend on the ch...

in this article, the size, dimensions, volume, bulk and particle densities, empyting and filling angles of repose and friction coefficients against different surfaces were evaluated for two varieties of barley, sahra and valfajr, as a function of moisture content in the range of 10.12 to 42.17 (w.b.%). most physical properties of barley varieties were significantly affected by moisture content ...

Single-particle inductively coupled plasma mass spectrometry (sp-ICP-MS) promises fast and selective determination of nanoparticle size and number concentrations. While several studies on practical applications have been published, data on formal, especially interlaboratory validation of sp-ICP-MS, is sparse. An international interlaboratory study was organized to determine repeatability and re...

-Andersen cascade impactors are widely used to assess airborne particle size distributions. Two forms (MkI and MklI) have been calibrated using solid and liquid aerosols, measured by microscopy, fluorimetry, and aerodynamic particle sizer. A fluorescent tracer was used to examine qualitatively the details of the wall loss deposition patterns when using greased and ungreased plates, and to quant...