نتایج جستجو برای: membrane permeability
تعداد نتایج: 427273 فیلتر نتایج به سال:
integrally skinned asymmetric membranes based on nanocompositepolyethersulfone were prepared by the phase separation process using the supercritical co2 as a nonsolvent for the polymer solution. in present study, the effects of temperature and nanoparticle on selectivity performance and permeability of gases has beeninvestigated. it is shown that the presence of silica nanoparticles not only di...
Zirconia ultrafiltration membranes are widely developed and used for past several years. But the conventional sol-gel methods of zirconia membrane preparation involve many steps. In the present study an attempt was made to develop defect free zirconia ultrafiltration (UF) membrane in single step coating of zirconia nanopowder suspension by slip casting method over multichannel ceramic support. ...
Nonspecific binding or sequestration results in differences between free and total drug concentrations, both in vitro and in vivo. Membrane partitioning and not protein binding is the primary mechanism of drug sequestration. Therefore, physicochemical properties, e.g., LogP can be used to predict drug sequestration in membrane and cell-based assays. The concentration of drug in a membrane is de...
Spherocytosis is a genetic disease characterized by specific morphological changes in erythrocytes. Their fragility causes them to lyse when passing through microcapillaries. The changing shape and breaking of erythrocytes can be evaluated by the transmittance of a cell suspension. Transmittance as a function of time for cells under osmotic stress can be used to retrieve parameters possibly rel...
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