نتایج جستجو برای: mixed brush
تعداد نتایج: 229114 فیلتر نتایج به سال:
Hydrophilic and hydrophobic weak polybasic brushes immersed in aqueous solutions of mixed salt counterions are considered using a mean-field numerical self-consistent field approach. On top of the solvent quality of the polymer, the counterion-solvent interactions are accounted for by implementing Flory-Huggins interaction parameters. We show that ion specificity within the brush can bring abou...
Intestinal cholesterol absorption is an important regulator of serum cholesterol levels. Ezetimibe is a specific inhibitor of intestinal cholesterol absorption recently introduced into medical practice; its mechanism of action, however, is still unknown. Ezetimibe neither influences the release of cholesterol from mixed micelles in the gut lumen nor the transfer of cholesterol to the enterocyte...
Intestinal alkaline phosphatase (IAP) is a brush-border membrane ectoenzyme (BBM-IAP) that is released into the lumen (L-IAP) after a high-fat diet. We examined the effects of oil feeding and the addition of mixed-lipid micelles on the formation of L-IAP in oil-fed rat intestine, Caco-2 cell monolayers, and mouse intestinal loops. We localized IAP in the duodenum of rats fed corn oil using fluo...
Foam thin liquid films (TLF) and monolayers at the air-water interface formed by DMPC mixed with DMPE-bonded poly (ethylene glycol)s (DMPE-PEG(550), DMPE-PEG(2000) and DMPE-PEG(5000)) were obtained. The influence of both (i) PEG chain size (evaluated in terms of Mw) and mushroom-to-brush conformational transition and (ii) of the liposome/micelle ratio in the film-forming dispersions, on the int...
The performance of a magnetic-field-assisted finishing (MAF) process, an advanced surface is severely affected by the rheological properties MAF brush. yield stress and viscosity brush, comprising iron particles abrasives mixed in liquid carrier medium, change depending on brush’s constituents applied magnetic field, which turn affect material removal mechanism corresponding final roughness aft...
Here I analyze the brush-fire cycle behind the brushy frontier of a grassland, seeking evolutionary feedback loops for large grazing animals and their hominin predators. Several months after a lightning strike, the burn scar grows enough new grass to expand the carrying capacity for grass-specialized herbivores, which evolved from mixed feeders in Africa during the early Pleistocene. The fronti...
INTRODUCTION The next generation of sophisticated nanomachines is being designed with integrated mechanical, optical, chemical gating, and biological devices to perform complex sensing functions. Such systems require “adaptive surfaces”, or surfaces that have the ability to respond to external stimulus and have their surface properties tuned for necessary functionality. Polymer brushes are pros...
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