نتایج جستجو برای: liquid membrane

تعداد نتایج: 597261  

2012
Chi-Yuan Lee Yu-Ming Lee Shuo-Jen Lee

In this study, local area water content distribution under various gas purging conditions are experimentally analyzed for the first time. The local high frequency resistance (HFR) is measured using novel micro sensors. The results reveal that the liquid water removal rate in a membrane electrode assembly (MEA) is non-uniform. In the under-the-channel area, the removal of liquid water is governe...

2015
Dong Woog Lee Kai Kristiansen Stephen H. Donaldson, Jr. Nicholas Cadirov Xavier Banquy Jacob N. Israelachvili

Membrane fusion is the core process in membrane trafficking and is essential for cellular transport of proteins and other biomacromolecules. During protein-mediated membrane fusion, membrane proteins are often excluded from the membrane-membrane contact, indicating that local structural transformations in lipid domains play a major role. However, the rearrangements of lipid domains during fusio...

Journal: :Physical Chemistry Chemical Physics 2023

Liquid half-cell measurements provide a convenient laboratory method for the determination of relevant parameters electro-catalysts applied in e.g. polymer electrolyte membrane fuel cells. While these may be effective...

Journal: :تحقیقات نظام سلامت 0

background: leachatecontaining high levels of organic pollution with ammonia, halogenatedhydrocarbons, heavy metals and inorganic salts. among the various methods fortreating leachate, has been developed membrane processes so that a morebiological process of membrane processes is used for separation of solid -liquid. the aimof this study was to evaluate the efficiency of membrane bioreactor eff...

Journal: :Acta biochimica Polonica 2001
A Drapała P Dzygiel J A Jönsson P Wieczorek

The application of supported liquid membrane (SLM) extraction for the enrichment of short peptides is presented. The extraction efficiency is dependent on the pH of donor phase and salt concentration in acceptor phase. Moreover, the extraction efficiency is also influenced by the peptide amino-acid sequence and hydrophobicity.

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علوم پایه دامغان - دانشکده شیمی 1387

چکیده ندارد.

2012
Tjoon Tow Teng Amir Talebi

Wastewaters are a potential source of pollutants causing serious problems to the environment. Liquid membrane is able to remove contaminants in wastewaters [1], among other techniques such as chemical precipitation, coagulation–flocculation, flotation, ion exchange, electro-oxidation and adsorption [2,3]. It has been given considerable attention by researchers due to its outstanding characteris...

2008
Titus Msagati Luke Chimuka Ewa Cukrowska

A brief review is given of membrane extraction techniques that are seen as suitable for the extraction of various chemicals in water samples. Membrane-based extraction methods have now gained popularity as methods of choice in the extraction of both ionisable and non-ionisable molecules from different samples. The main attractive features for these techniques include the use of minimal organic ...

Alavi Shoushtari SM Belbasi A Dorostkar K Khaki A, Tabassomi M Tahmasbian H

Background: A number of studies have demonstrated membrane lipid peroxidation (LPO) as one of the causes of defective sperm function in liquid semen preserved at 4◦C and cryopreserved semen. Some attempt has been made to preserve sperm parameters, particularly sperm motility, by adding some elements and Materials to the semen before freezing. Materials and Methods: To investigate effects of cop...

2016
Huang Liu Yong Pan Bei Liu Changyu Sun Ping Guo Xueteng Gao Lanying Yang Qinglan Ma Guangjin Chen

Separation of low boiling gas mixtures is widely concerned in process industries. Now their separations heavily rely upon energy-intensive cryogenic processes. Here, we report a pseudo-absorption process for separating low boiling gas mixtures near normal temperature. In this process, absorption-membrane-adsorption is integrated by suspending suitable porous ZIF material in suitable solvent and...

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