منابع مشابه
Impact of Irradiation on laryngeal hydration and lubrication in rat larynx.
OBJECTIVES The larynx is susceptible to irradiation, which causes significant vocal fold (VF) edema and dehydration shortly after radiotherapy for head and neck cancers. However little is known about radiation-induced damage to VF liquid homeostasis. To evaluate the effects of irradiation on VF hydration and lubrication, we investigated changes in water transporters (aquaporins [AQPs]) and muci...
متن کاملHydration lubrication and shear-induced self-healing of lipid bilayer boundary lubricants in phosphatidylcholine dispersions.
Measurements of normal and shear (frictional) forces between mica surfaces across small unilamellar vesicle (SUV) dispersions of the phosphatidylcholine (PC) lipids DMPC (14:0), DPPC (16:0) and DSPC (18:0) and POPC (16:0, 18:1), at physiologically high pressures, are reported. We have previously studied the normal and shear forces between two opposing surfaces bearing PC vesicles across pure wa...
متن کاملTunable transition from hydration to monomer-supported lubrication in zwitterionic monolayers revealed by molecular dynamics simulation.
The tribology of 2-methacryloyloxyethyl phosphorylcholine monolayers in water is studied using molecular dynamics simulations. Our results show two distinct shear regimes where the first is dominated by hydration lubrication, exhibiting near zero friction coefficients, and the second by chain-chain interactions, resembling monomer-supported lubrication. These results provide insight into the hy...
متن کاملHydration, hydration, hydration.
Throughout the world, large numbers of manual workers perform physically demanding labour in conditions of high environmental heat stress. Although the importance of adequate hydration in combating heat stress is universally recognized, studies in a range of worker groups have demonstrated a disturbingly poor hydration level in a high proportion of at-risk workers. Management of work in hot env...
متن کاملSoft lubrication.
We consider some basic principles of fluid-induced lubrication at soft interfaces. In particular, we quantify how a soft substrate changes the geometry of and the forces between surfaces sliding past each other. By considering the model problem of a symmetric nonconforming contact moving tangentially to a thin elastic layer, we determine the normal force in the small and large deflection limit,...
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ژورنال
عنوان ژورنال: Friction
سال: 2013
ISSN: 2223-7690,2223-7704
DOI: 10.1007/s40544-013-0001-7