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Impedance spectroscopy and membrane potential analysis of microfiltration membranes. The influence of surface fractality
(Pergamon-Elsevier Science Ltd, 2018-03)
In this work, the proper charge density of a microfiltration membrane has been determined by using two different methods. Firstly, the ionic transport of a KCl solution has been investigated by simultaneous measurements ...
Xylene isomerization in a ZSM-5/SS membrane reactor
(Springer, 2008-06)
A membrane reactor containing different types of ZSM-5/porous SS membranes was used to perform the xylene isomerization reaction. The parent Na-ZSM-5 layer was synthesized by secondary growth on top of porous stainless ...
Membrane localization of Junín virus glycoproteins requires cholesterol and cholesterol rich membranes
(Academic Press Inc Elsevier Science, 2013-01)
Arenavirus morphogenesis and budding occurs at cellular plasma membrane;however, the nature of membrane assembly sites remains poorly understood. In this study we examined the effect of different cholesterol-lowering ...
Interaction of a polyarginine peptide with membranes of different mechanical properties
(Multidisciplinary Digital Publishing Institute, 2019-10)
The membrane translocation efficiency of cell penetrating peptides (CPPs) has been largely studied, and poly-arginines have been highlighted as particularly active CPPs, especially upon negatively charged membranes. Here ...
Breakdown of classical paradigms in relation to membrane structure and functions
(Elsevier Science, 2021-02)
Updates of the mosaic fluid membrane model implicitly sustain the paradigms that bilayers are closed systems conserving a state of fluidity and behaving as a dielectric slab. All of them are a consequence of disregarding ...
Acid-doped ABPBI membranes prepared by low-temperature casting: Proton conductivity and water uptake properties compared with other polybenzimidazole-based membranes
(Electrochemical Society, 2016-01)
Phosphoric acid doped ABPBI (poly [2,5-benzimidazole]) membranes were prepared with a new low temperature casting procedure (ABPBI-ET), and their water uptake and proton conductivity were measured. The results were compared ...
Properties of polyethersulfone ultrafiltration membranes modified with polyethylene glycols
(John Wiley & Sons Inc, 2013-04)
Polyethersulfone ultrafiltration membranes have been prepared using polyethylene glycols (PEGs) of 400, 1000, and 10,000 gmol, as additive with dimethylacetamide as solvent. Infrared analysis proves that PEG leaves almost ...
Trans-membrane Fluorescence Enhancement by Carbon Dots: Ionic Interactions and Energy Transfer
(American Chemical Society, 2019-06)
We report on trans-membrane interactions between blueemitting carbon dots (CDs) and fluorescein. Hydrophobic CDs with a positive surface charge are embedded as-synthesized in the lipophilic sheet of the bilayer membrane ...
Membrane fluidization by alcohols inhibits DesK-DesR signalling in Bacillus subtilis
(Elsevier Science, 2018-03)
After cold shock, the Bacillus subtilis desaturase Des introduces double bonds into the fatty acids of existing membrane phospholipids. The synthesis of Des is regulated exclusively by the two-component system DesK/DesR; ...
Development of charged ion exchange resin-polymer ultrafiltration membranes to reduce organic fouling
(Elsevier Science, 2006-07-05)
This work deals with the performance of polymeric membranes charged with an ion exchange resin on the ultrafiltration (UF) of an oily suspension. The membranes were prepared by the phase inversion process from polysulfone ...