OBJECTIVE To explore the possibility of using the L4 membrane filtration device for processing of spermatozoa for intrauterine insemination and other assisted reproductive techniques. DESIGN, SETTING, PATIENTS Semen samples from 15 patients attending an infertility clinic of a tertiary referral institution and from seven fertile donors were used for the study. MAIN OUTCOME MEASURES The effe...

This paper focuses on the recent research in the development of anaerobic membrane bioreactors in wastewater treatment. Anaerobic wastewater treatment technology is gaining increasing attention due to its capacity to convert wastewater BODs to usable biogas with relatively low energy consumption. The anaerobic membrane bioreactor (AnMBR), which is a combination of the anaerobic biological waste...

This work presents the design, fabrication, and testing of a cross-flow filtration microdevice, for the continuous extraction of bacteria from a whole blood sample for the treatment of sepsis and bacteremia. The system consists of a two-compartment microdevice with two aligned sets of PDMS microchannels, separated by a porous polycarbonate (PCTE) membrane with 2 m pores. When a whole blood sam...

New materials developed in the last years promise to contribute significantly preparation of membranes with improved performance water filtration. Specifically, use dynamic-responsive systems provides reversibility membrane properties. In this work, a reversible photo-switchable based on templated liquid crystals is presented. Crosslinking columnar network, formed by self-assembly discotic supr...

In this study, a multifunctional poly(vinylidene fluoride) (PVDF) membrane was developed through chemical binding with ZnO-Ag nanocomposites to increase wastewater treatment efficiency. The unique characteristics of endowed the high surface hydrophilicity, organic/bio fouling resistance, and photocatalytic antibacterial activity. significantly decreased water contact angle increased under-water...

regarding many disadvantages of traditional method to produce concentrated yoghurt, several attempts have been done for mechanization of process in industrial scale. using membrane systems especially ultra filtration is one of these methods. in this survey, method to produce direct concentrated yoghurt, fresh milk was concentrated to 19% snf by ultra filtration method then diluted to 13 and 16 ...

Sections of mouse renal glomerulus fixed by perfusion with buffered osmium tetroxide solution have been studied with the electron microscope. Four components are recognized in the mouse glomerulus: epithelium, basement membrane, endothelium, and intercapillary cell. The three cellular components all display in their cytoplasm mitochondria, Golgi bodies, endoplasmic reticulum, and uncharacterize...