Nowadays, proton exchange membrane fuel cells (PEMFCs) are the most promising green energy conversion devices for portable and stationary applications. Traditionally, these devices were based onperfluoro-sulfonic acid electrolytes membranes, given the commercial name Nafion. Nafion is the mostused electrolyte membrane till now; because of its high electrochemical properties su...

premature rupture of membranes (prom) is one of the most common complications of pregnancy that has a major impact on neonatal outcomes. with respect to racial, nutritional and cultural differences between developed and developing countries, this study was conducted to detect the prevalence of neonatal complications following prom and the role of the duration of rupture of membranes in producin...

this study was aimed to detect anti-toxoplasma gondii antibodies in cats infected with rh strain of t. gondii by using an immunoblotting method. for this, cats were experimentally infected using tachyzoites harvested from vero cell cultures. tachyzoites were then lysed and transferred to polyacrylamide gels followed by blotting to pvdf membranes. an immunoblotting was performed using these memb...

the gas separation performance of commercial ceramic titania and hybrid silica (hybsi®) membranes was assessed using the gas permeation and permporometry methods. results indicated that the hybsi® membranes have a hybrid surface containing regions covered by a polymeric matrix and others with inorganic pores. these membranes have high h2 selectivity, which increases significantly with temperatu...

In this work proton exchange membranes were prepared by a modified microwave casting solution technique, using the polymers blend (polyethersulfone (PES), polystyrene (PS), polyvinylidenefluride (PVDF)). Modified method was used to overcome poor compatibility between hydrophilic, (PES, PS) and hydrophobic PVDF, cooling substrate during film process (4.5-5.5oC). Membranes chemically three reacti...

Lipids are undoubtedly the major constituents of cell membranes all living organisms, and most efficient source energy [...]

In guided bone regeneration (GBR), a barrier membrane is applied to provide space for promote cell adhesion, proliferation, and by inducing migration the surface of bone-deficient site. We prepared non-woven absorbable GBR comprised copolymer L-lactic acid glycolic (PLLGA) using dry spinning method. A thin dense comprising unsintered hydroxyapatite (uHA) poly-L-lactic (PLLA) was used comparison...