نتایج جستجو برای: integral asymmetric membranes

تعداد نتایج: 270096  

Journal: :Journal of Polymer Science 2021

Nanofiltration (NF) membrane processes are attractive to remove multivalent ions. As ion retention in NF membranes is determined by both size and charge exclusion, negatively charged required reject Layer-by-layer assembly of alternating polycation (PC) polyanion layers on top a support versatile method produce membranes. Especially the polyelectrolyte (PE) couple polydiallyldimethylammoniumchl...

Journal: :Chemical communications 2016
K Karamdad R V Law J M Seddon N J Brooks O Ces

In this article we detail a robust high-throughput microfluidic platform capable of fabricating either symmetric or asymmetric giant unilamellar vesicles (GUVs) and characterise the mechanical properties of their membranes.

Journal: :acta medica iranica 0
f. nili aa. shams ansari

premature rupture of membranes (prom) is one of the most common complications of pregnancy that has a major impact on neonatal outcomes. with respect to racial, nutritional and cultural differences between developed and developing countries, this study was conducted to detect the prevalence of neonatal complications following prom and the role of the duration of rupture of membranes in producin...

Integrally-skinned asymmetric Polyetherimide/Poly (vinyl alcohol) (PEI/PVA) hollow fber membranes for pervaporation dehydration were fabricated by non-solvent induced phase inversion. PVA inside the PEI matrix could be crosslinked to provide membrane performance stability during long term operation. The effects of different PEI/PVA blend ratio, external coagulant type and...

Journal: :Molecular membrane biology 2002
D Marsh L I Horváth M J Swamy S Mantripragada J H Kleinschmidt

Studies of lipid-protein interactions in double-reconstituted systems involving both integral and peripheral or lipid-anchored proteins are reviewed. Membranes of dimyristoyl phosphatidylglycerol containing either myelin proteolipid protein or cytochrome c oxidase were studied. The partner peripheral proteins bound to these membranes were myelin basic protein or cytochrome c, respectively. In a...

2017
Eleanor Birrell

Asymmetric encryption is an integral part of the modern world; it is used to bootstrap secure communication channels and secure storage solutions. The security of encrypted data is built on a sophisticated mathematical theory developed over the last forty years. But building a secure cryptosystem depends on more than just theory. In this class we will take a detailed look at the theory and prac...

Journal: :Chemical communications 2015
Ezzatollah Shamsaei Ze-Xian Low Xiaocheng Lin Alireza Mayahi Huiyuan Liu Xiwang Zhang Jefferson Zhe Liu Huanting Wang

Ultrathin ZIF-8 membranes with a thickness of around 200 nm were prepared by chemical vapour modification of surface chemistry and nanopores of an asymmetric bromomethylated poly(2,6-dimethyl-1,4-phenylene oxide) (BPPO) substrate. The resulting ZIF-8 membranes exhibited exceptional H2 permeance as high as 2.05 × 10(-6) mol m(-2) s(-1) Pa(-1) with high H2/N2 and H2/CO2 selectivities (9.7 and 12....

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