Seawater ultrafi ltration (UF) as a pretreatment of reverse osmosis (RO) process in a thermal power plant was investigated using a 100 kDa hollow fi ber membrane. The choice of the UF physical backwash conditions remains arbitrary or ensuing from a sensibility study. As the optimum must take into account the factors interactions, we led a response surface study to analy...

Most patients presenting with acute heart failure (AHF) show signs and symptoms of fluid overload, which are closely associated with short-term and long-term outcomes. Ultrafiltration is an extremely appealing strategy for patients with AHF and concomitant overt fluid overload not fully responsive to diuretic therapy. However, although there are several theoretical beneficial effects associated...

Ingestion of even small amounts of MDMA ('ecstasy') by a small subset of the population may result in a potentially fatal clinical syndrome of severe hyperpyrexia, cardiovascular collapse, coagulopathy, rhabdomyolysis and multiple organ failure. Rapid and aggressive temperature control is of utmost importance in the management of these patients. We report a case of MDMA toxicity presenting with...

This paper deals with the time-optimal operation and parameter estimation problem of a general diafiltration process in the presence of fouling. Fouling stands for one of the dominant problems in the membrane separation processes. The dynamic behavior of the fouled membrane is described by a general fouling model taken from literature. An Extended Kalman filter is proposed for the recursive est...

Several methods for the preparation of "white ghosts" or "resealed ghosts" were described in the recent literature. This article compares three methods to prepare white, resealed ghosts from bovine erythrocytes based on the principle of hypotonic lysis. The methods described differ by the removal of hemoglobin from the empty cells. The main difference between the standard centrifugation, the ge...

A novel process involving a paper-based ultrafiltration (UF) membrane was developed via paper coating technology. The membrane employed a paper sheet as support layer and a coated thin film layer of adhesive. The proper selection of paper sheet support layer was crucial to the performance of the ultrafiltration membrane. A paper sheet with beating degree of 85SR and basis weight of 50g/m was ch...

Membrane diafiltration process was developed in order to fractionate the water soluble proteins of supernatant obtained after Spirulina bead milling disruption and centrifugation. The crude extract filtered with 50 kDa, 150 300 kDa or 0.2 µm membranes. Phycocyanin purified extracts were produced filtration on membrane allowed high recovery (more than 89%) A C into retentate permeate as well sep...

Transmission electron microscopy of the auricular wall in an undescribed mesopsammic mollusc of the genus Meiomenia (Class Aplacophora, Subclass Neomeniomorpha) has revealed podocytes interposed between the haemocoel and the pericardial coelom. These cells comprise the auricular epicardium and overlie a loose inner myocardium. Podocytes characterize sites of blood ultrafiltration in the Polypla...