the purpose of this study was to prepare and characterize nimodipine loaded microspheres using ethyl cellulose (ec) as a carrier polymer through an emulsion solvent evaporation method. these evaluations characterized the pattern of drug release from prepared microspheres. nimodipin loaded microspheres were prepared using an emulsification solvent evaporation method. the effect of process variab...

Particle matter is one of the criteria air pollutants which have most considerable effect on human health in cities. Its legislation and regulation are mostly based mass. We showed here that total number particles particle concentrations different size fractions seem to be efficient quantities for quality monitoring urbanized areas. concentration (N) measurements were realized Budapest, Hungary...

Janus particles self-propel by generating local tangential concentration gradients along their surface. These are present in a thin layer whose thickness is small compared to the particle size. Chemical asymmetry surface prerequisite generate chemical gradient, which gives rise diffusioosmotic flows region around particle. This results an effective slip on observed "swimming" motion of freely s...