نتایج جستجو برای: liquid membrane

تعداد نتایج: 597261  

Journal: :Separation and Purification Technology 2022

This work aims to intensify trans-p-coumaric acid (p-CA) heterologous production. p-CA exhibits antimicrobial properties, low hydrosolubility, and retro-inhibition activity, making its production limited due accumulation in the broth. To overcome these limitations, an in-stream product recovery process (ISPR) is proposed consists a liquid-liquid extraction assisted by hollow fiber membrane cont...

Journal: :Advanced Materials Interfaces 2022

Optically Isotropic Liquid Crystal Structure In article number 2101919, Young-Chul Shin, Hak-Rin Kim, and co-workers present an optically isotropic liquid crystal structure templated by a self-structured nano-porous breath figure membrane, which is implementable as high contrast ratio of flexible displays with size-scalable printing approaches.

Journal: :Eksergi 2023

The most important part of the membrane synthesis process so that it has desired pores is solidification membrane, begins with a change from one liquid phase into two phases (liquid-liquid demixing). At certain period during demixing, polymer-rich solidifies; thus, dense matrix formed. Parameters determine mechanism formation are based on thermodynamics including separation Solvent-Polymer-Non-...

2003
C. A. Smolders H. Strathmann

Mass transfer during membrane formation by means of phase inversion for a polymeric system with both a solid-liquid and a liquid-liquid equilibrium was studied on the basis of the theory developed by Reuvers and Smolders. During the first moments of immersion in the coagulation bath, the concentrations at the interface between bath and film are governed by the virtual liquid-liquid equilibrium....

2016
Ofer Kimchi

Ion channels in the plasma membrane are the functional units of neurons and their misregulation by anesthetic compounds is thought to be the proximate cause of the organism-level anesthetic response. However, the mechanism through which general anesthetics affect these channels remains an open question: although many drugs function by binding to receptors in the cell membrane, the variability i...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2004
Sayaka Wada Kazuhiko Fujiwara Hideaki Monjushiro Hitoshi Watarai

The direct measurement of the circular dichroism (CD) spectra of liquid/liquid interface has been achieved for the first time by the centrifugal liquid membrane (CLM) method combined with a conventional CD spectropolarimetry. In the sample chamber of the CD spectropolarimeter, a cylindrical glass cell containing small amounts of organic and aqueous phases was rotated at ca. 7000 rpm to generate...

2003
R. Huang Z. Suo

This paper studies a solid film lying on a liquid layer, which in turn lies on a solid substrate. It is well known that, subject to a compressive membrane force, the solid film wrinkles, dragging the liquid underneath to flow. When the solid film is very thin, the ratio between the number of atoms at the surface and that in the bulk becomes significant, so that surface stress contributes to the...

E. Dirandeh M. Behroozlak N. Hedayat Evrigh V. Vahedi,

Oxidative stress during freezing-thawing reduces sperm motility, viability, membrane functions and antioxidant capacity. Thymus vulgaris has antioxidant properties due to phenolic compounds. The purpose of current study was to evaluate the effect of Thymus vulgaris extract as a natural antioxidant on post-thawed Moghani ram sperm quality. Semen samples were collected twice a week from four rams...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2012
James Peter Sáenz Erdinc Sezgin Petra Schwille Kai Simons

Liquid-ordered phases are one of two biochemically active membrane states, which until now were thought to be a unique consequence of the interactions between eukaryotic membrane lipids. The formation of a liquid-ordered phase depends crucially on the ordering properties of sterols. However, it is not known whether this capacity exists in organisms that lack sterols, such as bacteria. We show t...

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