By using lactose colored with erythrocin, we examined the effect of particle size on mixing degree during the preparation of triturations with a mortar and pestle. We used powders with different distributions of particle sizes, i.e., powder that passed through 32-mesh but was trapped on a 42-mesh sieve (32/42-mesh powder), powder that passed through a 42-mesh sieve but was trapped on a 60-mesh ...

Abstract: as magnetic materials, semiconductors, pigments, catalysts, refractories and electronic ceramics. In this paper, wereported the preparation of NiAlThe resulting powder was chracterized by XRD, particle size analysis and SEM. The XRD patterns show that thecombustion technique was excellent to prepare single – phased cubic NiAlfound to be around 14 nm. From the particle size analysis, i...

Biomass particle size impacts handling, storage, conversion, and dust control systems. Switchgrass (Panicum virgatum L.) particle size distributions created by a knife mill were determined for integral classifying screen sizes from 12.7 to 50.8 mm, operating speeds from 250 to 500 rpm, and mass input rates from 2 to 11 kg/min. Particle distributions were classified with standardized sieves for ...

BACKGROUND A simple method for the measurement of LDL particle sizes is needed in clinical laboratories because a predominance of small, dense LDL (sd LDL) has been associated with coronary heart disease. We applied dynamic light scattering (DLS) to measure lipoprotein particle sizes, with special reference to sd LDL. METHODS Human serum lipoproteins isolated by a combination of ultracentrifu...

Department of Restorative Dentistry, Health Sciences Center, Federal University of Paraíba – UFPB, João Pessoa, PB, Brazil Department of Rsrtorative Dentistry, Goiania School of Dentistry, Federal University of Goias – UFG, Goiania, GO, Brazil Operative Dentistry and Dental Materials Division, Uberlândia School of Dentistry, Federal University of Uberlândia – UFU, Uberlândia, MG, Brazil Departm...

The Saturn ring plane crossings in 1995{96 allowed observers using the Hubble Space Telescope and the W. M. Keck telescope to image the planet's di use rings from 0.3 m { 2.2 m at a scattering angle 175 . We calculate the G ring re ectance for size distributions of dust to km-sized bodies derived from a physical, evolutionary model. The model tracks the evolution of the G ring from its initial ...

Morphologic diversity is observed across all families of viruses. Yet these supra-molecular assemblies are produced most of the time in a spontaneous way through complex molecular self-assembly scenarios. The modeling of these phenomena remains a challenging problem within the emerging field of Physical Virology. We present in this work a theoretical analysis aiming at highlighting the particul...