comin the case of pharmaceutical processes, the presence of preservatives can be problematic and the quantity is subject to stringent standards. so, the aim of this study is to quantify the removal of glycerin contained in ultrafiltration flat sheet membranes by filtration and soaking. this is carried out over a wide range of membranes with different characteristics. the selected flat sheet mem...

background: ovarian hyperstimulation syndrome (ohss) is a recognized complication of ovulation induction, occurring in 1-10% of ivf and embryo transfer cycles. while mild ohss is of no clinical relevance, severe ohss is a life threatening complication. however, the efficacy of prevalent treatments appeared to be limited. we developed a continuous autotransfusion system with an ultrafiltration i...

This study evaluates the effect of balanced ultrafiltration, modified ultrafiltration, and balanced ultrafiltration with modified ultrafiltration on inflammatory mediators in children's open-heart surgery. Eighty children with congenital heart disease were randomly divided into four groups: control group (C group); balanced ultrafiltration group (BUF group); modified ultrafiltration group (MUF ...

We report our experience with Gnathostoma protein preparation by the ultrafiltration method. Crude antigen was sonicated and ultrafiltrated using the Nanosep 100 K membrane. SDS-PAGE electrophoresis showed protein bands at 43, 41, 24, 22, 21, 19.5 kDa. Use of the ultrafiltration method can provide specific protein (24 kDa), similar to the non-ultrafiltration method, with the other 5 non-specifi...

a microporous bisphenol a diglycidyl ether (dgeba) epoxified-polyethersulfone (pes) blend membrane (epes membrane) was prepared through dry-wet phase inversion. this study attempts to correlate the changes in membrane physical and chemical properties when the epes membranes were exposed to different durations of dry-phase inversion, towards the separation efficiency of carcinogen chromium (vi)....

BACKGROUND Although used routinely in pediatric patients, ultrafiltration techniques that reverse hemodilution are infrequently used in adults. Data from small, unblinded clinical trials suggest that the use of ultrafiltration can reduce inflammatory mediators, improve cardiac function, and reduce hemodilution. We conducted a meta-analysis of randomized trials to evaluate the effects of ultrafi...

BACKGROUND Ultrafiltration for heart failure may reduce costs associated with acute heart failure by decreasing rehospitalization rates compared to intravenous diuretics. METHODS AND RESULTS We developed a decision-analytic model to explore the clinical outcomes and associated costs of ultrafiltration compared to intravenous diuretics for index and subsequent acute heart failure hospitalizati...

Ultrafiltration is an important research tool in colloid chemical and in certain types of biological investigation. However, in spite of the many years that ultrafiltration has been used as a research tool, the phase of the subject concerning the ultrafiltra tion of electrolytes from systems containing electrically charged colloids has been lacking in both experimental data and a theoretical ba...

1. Introduction Ultrafiltration is used for protein concentration and buffer exchange in the downstream processing of essentially all recombinant protein products [1]. Although ultrafiltration has traditionally been viewed as a convective pressure-driven process, with the separation determined on the basis of size, solute transport through ultrafiltration membranes is also strongly influenced b...