نتایج جستجو برای: inorganic membranes

تعداد نتایج: 166158  

2015
JOHNSON MATTHEY

Jointly organised by the Aseanian Membrane Society, the European Membrane Society and the North American Membrane Society, the 10th International Congress on Membrane and Membrane Processes (ICOM) was held at Suzhou, China from 20th to 25th July 2014. ICOM is a highly regarded triennial conference in the membrane community, attracting scientists from around the world for scientifi c disseminati...

2010
Helfrid M.A. Rossiter Margaret C. Graham Andrea I. Schäfer

Factors affecting uranium removal from brackish groundwater using a direct solar powered ultrafiltration-nanofiltration/reverse osmosis membrane system were investigated during a field trial in the Australian outback. The key variables were uranium speciation (as a function of pH), groundwater type as well as energy variation over the course of a day. It was found that uranium was retained by t...

Journal: :Journal of bacteriology 1968
R Gross N W Coles

The preparation of cytoplasmic membranes from suspensions of Staphylococcus aureus lysed by an enzyme recently isolated in these laboratories is described. These membranes contained: protein, 34.4%; ribonucleic acid, 6.6%; lipids, 34.5%; and total phosphorus, 1.4%. Such membranes exhibited adenosine 5'-triphosphatase (E.C. 3.6.1.3) activity, liberating orthophosphate at an initial rate of 0.53 ...

1998
S. Kuiper C.J.M. van Rijn W. Nijdam M. C. Elwenspoek

Inorganic micro®ltration membranes with a pore size down to 0.1 mm have been made using laser interference lithography and silicon micro machining technology. The membranes have an extremely small ̄ow resistance due to a thickness smaller than the pore size, a high porosity and a very narrow pore size distribution. They are relatively insensible to fouling, because they have a smooth surface, s...

Journal: :The Journal of biological chemistry 1988
I Ducis A Kandrach E Racker

Human erythrocyte ghosts catalyze a low rate of 32Pi uptake. A severalfold stimulation of 32Pi uptake was observed after exposure of the membranes to an erythrocyte lysate or to hemoglobin in the presence of Mg2+. Ghosts prepared from erythrocytes that had been exposed to 10 microM 4,4'-diisothiocyanostilbene-2,2'-disulfonic acid showed a marked reduction in 32Pi uptake. Reconstitution of membr...

Journal: :Plant physiology 1965
Y Yamada S H Wittwer M J Bukovac

Studies of salute plenetration into living cells are becoming legion. Protective or barrier membranes must be traversed1. Cell particulates, cells themselves. and external plant surfaces are covered with membranes of varying permeabilities. Not the least among the membranes are the noncellular cuticles that cover all aerial plant parts including leaves. Absorption by living leaf cells of any fo...

Journal: :Journal of Chemical Engineering of Japan 2023

Separation membranes, which have the possibility to develop energy-saving and compact processes, are expected be applied in field of CO2 separation capture attracting considerable interest from both industries academia. The purpose this review is provide an overview recent advances organic inorganic materials for high-performance membranes viewpoint molecular design engineering perspective. inc...

2006
Anne O. Summers

Sect. 2. Bacterial mercury transformations Certain bacteria that colonize the human gastrointestinal (GI) tract can methylate inorganic mercury to form methylmercury, CH3Hg(I). Other bacteria that also colonize gut ecosystem can reduce mercuric ion, Hg(II), to monoatomic elemental mercury, Hg(0), a form which readily diffuses across the body's membranes into circulation. The genes for the latte...

Journal: :Japanese journal of medicine 1984
T Imamura T Matsuo T Yanase S Kagiyama

A 17-year-old woman with hereditary spherocytosis was found to be heterozygous for an unusual variant of the band 3 protein in erythrocyte membranes. The variant had a molecular weight of 95,000 daltons which was larger by about 3,000 daltons than the 92,000 m.w. normal band 3, and was phosphorylated less efficiently when intact cells were incubated with 32P-inorganic phosphate. It is discussed...

Journal: :Chemical engineering journal advances 2022

This work aims at studying the potential of modifying surface used polyamide (PA) reverse osmosis (RO) commercial membranes by coatings made renewable and biodegradable polymers, chitosan (CS) polyvinyl alcohol (PVA), filled with Cu-ion-exchange layered AM-4 titanosilicate UZAR-S3 stannosilicate to provide antifouling properties enlarging life time thin-film composite (TFC) membranes. The water...

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