Results 11 to 20 of about 628,659 (381)
Transport in polymer membranes beyond linear response: Controlling permselectivity by the driving force [PDF]
Macromolecules 55, 16, 7327-7339 (2022), 2021 In the popular solution-diffusion picture, the membrane permeability is defined as the product of the partition ratio and the diffusivity of penetrating solutes inside the membrane in the linear response regime, i.e., in equilibrium. However, of practical importance is the penetrants' flux across the membrane driven by external forces.
arxiv +1 more source
mBio, 2020 Gram-negative bacteria are intrinsically resistant to many antibiotics due to their outer membrane barrier. Although the outer membrane has been studied for decades, there is much to uncover about the biology and permeability of this complex structure ...
Kristina Klobucar +4 more
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PLoS Biology, 2023 One of the deepest branches in the tree of life separates the Archaea from the Bacteria. These prokaryotic groups have distinct cellular systems including fundamentally different phospholipid membrane bilayers.
Urszula Łapińska +9 more
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Scientific Reports, 2023 In this study, a new multi-layer hybrid nanocomposite membrane named MFI/GO/ZIF-8 has been synthesized. This membrane combines three nanoporous materials with different morphologies in one membrane without using polymer materials. This allows access to a
Fahime Dehghan +3 more
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Hydrodynamics of a Semipermeable Vesicle Under Flow and Confinement [PDF]
Phys. Rev. Fluids 6, 073601 (2021), 2021 Lipid bilayer membranes have a native (albeit small) permeability for water molecules. Under an external load, provided that the bilayer structure stays intact and does not suffer from poration or rupture, a lipid membrane deforms and its water influx/efflux is often assumed negligible in the absence of osmolarity. In this work we use boundary integral
arxiv +1 more source
On permeability of corrugated pore membranes
AIP Advances, 2020 Ceramic membranes have great potential for water treatment and filtering applications. However, one of the drawbacks of ceramic membrane filtration is its low permeability due to small functioning nanometer pore size. Increasing the membrane permeability
Thien Tran-Duc +2 more
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Membranes, 2016 We present a modeling approach to determine the permeability-selectivity tradeoff for microfiltration and ultrafiltration membranes with a distribution of pore sizes and pore shapes. Using the formulated permeability-selectivity model, the effect of pore
Muhammad Usama Siddiqui +2 more
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Role of the fast kinetics of pyroglutamate-modified amyloid-β oligomers in membrane binding and membrane permeability. [PDF]
, 2014 Membrane permeability to ions and small molecules is believed to be a critical step in the pathology of Alzheimer's disease (AD). Interactions of oligomers formed by amyloid-β (Aβ) peptides with the plasma cell membrane are believed to play a fundamental
Gillman, Alan L +6 more
core +1 more source
A survey of structure characterization methods for ultrafiltration and reverse osmosis membranes [PDF]
, 1976 Asymmetric membranes consist of a thin skin, which is permselective to certain molecules in solution, and a porous support, serving as a mechanical support layer and also as a transport layer for the permeate.
Mulder, M.H.V. +2 more
core +15 more sources
High membrane permeability for melatonin [PDF]
Journal of General Physiology, 2015 The pineal gland, an endocrine organ in the brain, synthesizes and secretes the circulating night hormone melatonin throughout the night. The literature states that this hormone is secreted by simple diffusion across the pinealocyte plasma membrane, but a direct quantitative measurement of membrane permeability has not been made.
Duk Su Koh +5 more
openaire +6 more sources