Results 1 to 10 of about 7,291 (192)

CO2 permeability of the rat erythrocyte membrane and its inhibition

open access: yesJournal of Enzyme Inhibition and Medicinal Chemistry, 2021
We have studied the CO2 permeability of the erythrocyte membrane of the rat using a mass spectrometric method that employs 18 O-labelled CO2. The method yields, in addition, the intraerythrocytic carbonic anhydrase activity and the membrane HCO3 ...
Samer Al-Samir   +4 more
doaj   +1 more source

Amide-to-ester substitution as a stable alternative to N-methylation for increasing membrane permeability in cyclic peptides

open access: yesNature Communications, 2023
Naturally occurring peptides with high membrane permeability often have backbone ester bonds. Here, the authors investigated the effect of an amide-to-ester substitution on membrane permeability of peptides and found the substitution is useful for ...
Yuki Hosono   +16 more
doaj   +1 more source

Alpha-toxin induces programmed cell death of human T cells, B cells, and monocytes during USA300 infection. [PDF]

open access: yesPLoS ONE, 2012
This investigation examines the influence of alpha-toxin (Hla) during USA300 infection of human leukocytes. Survival of an USA300 isogenic deletion mutant of hla (USA300Δhla) in human blood was comparable to the parental wild-type strain and ...
Tyler K Nygaard   +10 more
doaj   +1 more source

Fabrication and Characterization of Chitosan/N-Phthaloyl Composite Membrane for DMFC Application

open access: yesJurnal Riset Kimia, 2021
Modified chitosan membrane is one of the promising membranes for polymer electrolyte membrane. Chitosan/N-phthaloyl chitosan composite membranes were fabricated to obtain high proton conductivity and low methanol permeability.
Christine Dyta Nugraeni   +5 more
doaj   +1 more source

Genetic and Chemical-Genetic Interactions Map Biogenesis and Permeability Determinants of the Outer Membrane of Escherichia coli

open access: yesmBio, 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
doaj   +1 more source

Study of effective parameters on the transport of dysprosium through a supported liquid membrane containing Cyanex 272 as a carrier [PDF]

open access: yesمجله علوم و فنون هسته‌ای, 2022
In this study, the extraction of dysprosium was investigated using a supported liquid membrane (SLM) system. The experiments were performed using bis (2, 4, and 4-trimethylpentyl) phosphinic acid (Cyanex272) as the carrier.
F. Zahakifar   +2 more
doaj   +1 more source

Fabrication of a Novel (PVDF/MWCNT/Polypyrrole) Antifouling High Flux Ultrafiltration Membrane for Crude Oil Wastewater Treatment

open access: yesMembranes, 2022
The present work deals with the fabrication of novel poly(vinylidene fluoride) (PVDF)/Multi-wall Carbon Nanotubes (MWCNT)/Polypyrrole (PPy) ultrafiltration membrane by phase inversion technique for the removal of crude oil from refinery wastewater.
Banan Hudaib   +3 more
doaj   +1 more source

Permeability-Selectivity Analysis of Microfiltration and Ultrafiltration Membranes: Effect of Pore Size and Shape Distribution and Membrane Stretching

open access: yesMembranes, 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
doaj   +1 more source

On permeability of corrugated pore membranes

open access: yesAIP 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
doaj   +1 more source

Pore size engineering of cost-effective all-nanoporous multilayer membranes for propane/propylene separation

open access: yesScientific 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
doaj   +1 more source

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