Results 41 to 50 of about 622,274 (185)

Graphene-polyelectrolyte multilayer membranes with tunable structure and internal charge [PDF]

, 2020
One great advantage of graphene-polyelectrolyte multilayer (GPM) membranes is their tunable structure and internal charge for improved separation performance. In this study, we synthesized GO-dominant GPM membrane with internal negatively-charged domains,
Gu, P, Liu, Y, Mi, B, Ng, AJ, Urban, JJ, Wang, M, Wei, Y, Zheng, S   +7 more
core   +1 more source

Membrane thickness, lipid phase and sterol type are determining factors in the permeability of membranes to small solutes

Nature Communications, 2022
Membrane permeability of small molecules depends on the composition of the lipid bilayer. Here, authors compare permeability measured on membranes in different physical states and conclude that the yeast membrane exists in a highly ordered phase.
Jacopo Frallicciardi, Josef Melcr, Pareskevi Siginou, Siewert J. Marrink, Bert Poolman   +4 more
doaj   +1 more source

Alcohol Diffusion in Alkali-Metal-Doped Polymeric Membranes for Using in Alkaline Direct Alcohol Fuel Cells

Membranes, 2022
The alcohol permeability of anion exchange membranes is a crucial property when they are used as a solid electrolyte in alkaline direct alcohol fuel cells and electrolyzers.
Andrea Fernández-Nieto, Sagrario Muñoz, Vicenta María Barragán   +2 more
doaj   +1 more source

Effect of a membrane on diffusion-driven Turing instability [PDF]

arXiv, 2021
Biological, physical, medical, and numerical applications involving membrane problems on different scales are numerous. We propose an extension of the standard Turing theory to the case of two domains separated by a permeable membrane. To this aim, we study a reaction-diffusion system with zero-flux boundary conditions on the external boundary and ...
arxiv  

Electrostatically gated membrane permeability in inorganic protocells [PDF]

, 2013
Although several strategies are now available to produce functional microcompartments analogous to primitive cell-like structures, little progress has been made in generating protocell constructs with self-controlled membrane permeability.
A Boker, A Dzieciol, A Pohorille, AB Subramaniam, AB Subramaniam, AD Dinsmore, B Städler, Bernard P. Binks, C Wu, D Lee, DS Williams, DY Wang, GJT Cooper, J-W Kim, Jonathan V. M. Weaver, JVM Weaver, JW Szostak, KL Thompson, M Li, Mei Li, MF Hsu, P Stano, P Stano, P Walde, Rachel L. Harbron, RK Shah, RL Harbron, S Koga, S Mann, Stephen Mann, W Martin   +30 more
core   +3 more sources

The Second Transmembrane Domain of P2X7 Contributes to Dilated Pore Formation [PDF]

, 2013
Activation of the purinergic receptor P2X7 leads to the cellular permeability of low molecular weight cations. To determine which domains of P2X7 are necessary for this permeability, we exchanged either the C-terminus or portions of the second ...
A MacKenzie, A Surprenant, AN Shemon, B Gu, BC Suh, BJ Gu, BJ Gu, BM Saunders, BS Khakh, BS Khakh, C Andrei, C Marques-da-Silva, C Sun, C Virginio, Chengqun Sun, CP Lai, D Leon, D Zink, DS Emmett, DS Samways, E Adinolfi, E Bulanova, F Bretschneider, F Rassendren, G Girolomoni, H Gunosewoyo, HJ Bradley, HM Costa-Junior, HZ Hu, JS Wiley, K Schroder, KA Hillman, L Gudipaty, L Stokes, LC Denlinger, LC Denlinger, LE Browne, LH Jiang, LH Jiang, M Li, M Li, Michelle E. Heid, ML Gavala, ML Smart, MT Miras-Portugal, P Marin-Garcia, P Pelegrin, P Pelegrin, Peter A. Keyel, Pierre Bobé, Q Li, R Sluyter, RA North, Russell D. Salter, S Chaumont, S Kracun, S Locovei, S Penuela, S Roger, SD Ohlendorff, SD Silberberg, SL Fernando, SL Fernando, T Kawate, T Sugiyama, TM Egan, V Petrilli, W Duckwitz, Y Shinozaki   +68 more
core   +3 more sources

Reaction-Diffusion System in a Vesicle with Semi-Permeable Membrane [PDF]

, 2006
We study the Schloegl model in a vesicle with semi-permeable membrane. The diffusion constant takes a smaller value in the membrane region, which prevents the outflow of self-catalytic product. A nonequilibrium state is stably maintained inside of the vesicle.
arxiv   +1 more source

The preparation and characterization of alumina membranes with ultra-fine pores : Part 3. The permeability for pure liquids [PDF]

, 1985
This paper reports on the permeability of alumina membranes with pore diameters of a few nanometers for pure liquids. It appears that the volume flux corrected for viscosity differences depends on the type of permeant.
Burggraaf, A.J., Leenaars, A.F.M.
core   +3 more sources

Membrane Disintegration Caused by the Steroid Saponin Digitonin Is Related to the Presence of Cholesterol

Molecules, 2015
In the present investigation we studied the molecular mechanisms of the monodesmosidic saponin digitonin on natural and artificial membranes. We measured the hemolytic activity of digitonin on red blood cells (RBCs). Also different lipid membrane models (
Ikhwan Resmala Sudji, Yamunadevi Subburaj, Nataliya Frenkel, Ana J. García-Sáez, Michael Wink   +4 more
doaj   +1 more source

Direct observation of defects and increased ion permeability of a membrane induced by structurally disordered Cu/Zn-superoxide dismutase aggregates. [PDF]

PLoS ONE, 2011
Interactions between protein aggregates and a cellular membrane have been strongly implicated in many protein conformational diseases. However, such interactions for the case of Cu/Zn superoxide dismutase (SOD1) protein, which is related to fatal ...
Inhee Choi, Hyeon Don Song, Suseung Lee, Young In Yang, Joo Hyun Nam, Sung Joon Kim, Jung-Joon Sung, Taewook Kang, Jongheop Yi   +8 more
doaj   +1 more source