Results 211 to 220 of about 33,441 (248)
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Retention of modified BSA by ultrafiltration membranes
Journal of Chemical Technology & Biotechnology, 2014AbstractBACKGROUNDThe efficiency of protein purification depends on membrane pore size and electrostatic repulsion between a protein and membrane surface. The current study investigates how deliberate protein modification affects the electrostatic repulsion, degree of protein separation and transmembrane flux.RESULTSThe experiments were performed with ...
Inna Levitsky +3 more
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Techniques of paediatric modified ultrafiltration: 1996 survey results
Perfusion, 1998In September 1996, perfusionists from 50 paediatric open-heart surgery programmes were contacted to identify centres that are currently using the technique of modified ultrafiltration (MUF). Of the 50 centres contacted, 22 (44%) were utilizing the technique.
E, Darling +4 more
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Cerebral oxygen saturation changes during modified ultrafiltration
Perfusion, 2006Background: A number of adverse effects are associated with the use of cardiopulmonary bypass (CPB) in pediatric patients undergoing cardiac surgery. Pulmonary compliance and gas exchange are decreased, and myocardial edema may result in diastolic dysfunction.
William M, Medlin, Joseph J, Sistino
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Effects of combined conventional and modified ultrafiltration in adult patients
The Annals of Thoracic Surgery, 2001Modified ultrafiltration (MUF) improves hemodynamics and postoperative recovery in children. Ultrafiltration (UF) may have similar benefits in adults. The purpose of this study was to investigate the effects of UF in adult patients.A total of 40 adult patients undergoing cardiac surgery were randomized into a study group of conventional UF during ...
U, Kiziltepe +5 more
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Indian Journal of Thoracic and Cardiovascular Surgery, 2007
Today’s practice of cardiac surgery encounters an increasing number of older and/or sicker patients, who are expected to have higher morbidity and mortality. Ultrafiltration during cardiac surgery is one of the strategies to prevent major vital organ dysfunction associated with cardiopulmonary bypass (CPB) and therefore might reduce the morbidity and ...
Tapan Kumar Sahoo +4 more
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Today’s practice of cardiac surgery encounters an increasing number of older and/or sicker patients, who are expected to have higher morbidity and mortality. Ultrafiltration during cardiac surgery is one of the strategies to prevent major vital organ dysfunction associated with cardiopulmonary bypass (CPB) and therefore might reduce the morbidity and ...
Tapan Kumar Sahoo +4 more
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Modified ultrafiltration membranes for humic acid removal
Journal of the Taiwan Institute of Chemical Engineers, 2014Abstract Polyethersulfone (PES) ultrafiltration membranes were prepared via phase inversion induced by immersion precipitation with a blending method in different concentrations of two hydrophilic monomers, namely 3,5-diaminobenzoic acid (DBA) and gallic acid (GA).
Alisa Mehrparvar +2 more
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Effects of Cardiopulmonary Bypass and Use of Modified Ultrafiltration
The Annals of Thoracic Surgery, 1998Hemodilution is a prominent problem in cardiopulmonary bypass in a pediatric population. Ultrafiltration is a method used to reduce fluid volume and tissue edema and to increase hematocrit without the need for blood products. Modified ultrafiltration may offer advantages in comparison with conventional ultrafiltration.This article reviews the technique
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Properties of polyethersulfone ultrafiltration membranes modified by polyelectrolytes
Desalination, 2010This study reports on the surface modification of ultrafiltration membranes using the layer-by-layer (LbL) technique. The novelty of this work resides in the LbL assembly of charged polyelectrolytes by electrostatic adsorption directly onto the ultrafiltration membranes without any prior treatment of the surface.
Jozef Kochan +3 more
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Polyamide ultrafiltration membranes modified with nanocarbon additives
Russian Journal of Applied Chemistry, 2008Possibility of modification of polyphenyleneisophthalamide with 5 wt % nanocarbon additive (fullerene, astralene, or graphite soot) was studied. The resulting composites were used to prepare asymmetric membranes, and the effect of carbon additives on the performance of these membranes was examined.
G. A. Polotskaya +4 more
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Separation of isomers by ultrafiltration using modified cyclodextrins
Separation and Purification Technology, 2000Abstract In order to improve selective inclusion of cyclodextrin (CD) and permeate flux, separation of structural isomers ( o -, m - and p -nitrophenols) and optical isomers ( d - and l -phenylalanines) were conducted using some modified α and β-CDs, glucosyl (G1)-, maltosyl (G2)-, hydroxy-propyl (HP)-, α- and β-CDs, according to the previously ...
Arif Yudiarto +2 more
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