A size-dependent particle separation (classification) is one of the most important procedures in biochemical, environmental, or medical analyses and their applications. However, the smaller particle size or the smaller size difference makes the particle classification difficult. The Lab-on-a-Chip concept have encouraged the miniaturization of various separation or selection methods for small pa...

In order to obtain reproducible quantitative result for constituents of plant materials, the grinding of sample and extraction of a sieve fraction with a predefined average particle size is advised. The aim of the present study is to investigate the influence of particle size of marihuana on the extraction recovery of THC (delta-9-tetrahydrocannabinol) applying supercritical fluid extraction as...

Th e object of the sieving process is to separate a mixture of a granulated material into fractions. Each fraction contains particles of similar dimensions. Th e primary object of this research was to determine how the change of sieving amplitude aff ects the particle size distribution and defi nition of optimal fraction for processing of direct expanded extrudates based on corn fl our. Sieving...

This study aimed at demonstrating complementary roles offered by both Fourier transform infrared (FTIR) spectrophotometry and x-ray powder diffraction (XRPD) techniques in characterizing clay size fraction of kaolins. The clay size fraction of kaolin samples obtained from Kgwakgwe, Makoro, Lobatse and Serule kaolin occurrences and deposits in Botswana were characterized using laser diffraction ...

This study explores the effects of fines fraction, particle shape, and size ratio on long-term response sand-silt mixtures with fraction FF = 0-to-100% during Ko-loading cycles i 104. The void for all specimens evolves toward asymptotic terminal eT that captures transition from coarse-to-fine controlled behavior. Shear wave velocity versus intergranular eC equivalent (eC)eq ratios estimates par...

Coal combustion by-products such as fly ash (FA), brine and CO2 from coal fired power plants have the potential to impact negatively on the environment. Reaction of CO2 with FA/ brine slurry can potentially provide a viable route for CO2 sequestration through formation of mineral carbonates. Fractionated FA has varying amounts of CaO which not only increases the brine pH but can also be convert...

Abstracts: nanoparticles. All the extracts were used separately for the synthesis of gold nanoparticles through the reduction ofaqueous AuClgold ions to gold nanoparticles. The ethanol extract of black tea and its tannin free ethanol extract produced goldnanoparticles in the size ranges of 2.5-27.5 nm and 1.25-17.5 nm with an average size of 10 nm and 3 nm, respectively.The prepared colloid gol...

The processing of harvested E. coli cell broths is examined where the expressed protein product has been released into the extracellular space. Pre-treatment methods such as freeze-thaw, flocculation, and homogenization are studied. The resultant suspensions are characterized in terms of the particle size distribution, sensitivity to shear stress, rheology and solids volume fraction, and, using...