The direct conversion of methane to C2 hydrocarbons, in a quartz tube reactor enforced by a DC corona discharge, was investigated at atmospheric pressure. The process was carried out in the presence of metal oxide catalysts of Mn/W/SiO2, Mn/W/SiO2 (tetraethyl orthosilicate, TEOS), and Mn/W/CNT (supported on carbon nanotubes). The total yield to C2 hydrocarbons in the presence of metal oxide cat...

Spermatozoa generate reactive oxygen species (ROS) in physiological amounts which play a role in sperm functions during sperm capacitation acrosome reaction (AR) and oocyte fusion. In addition damaged sperm are likely to be the source of ROS. The most important ROS produced by human sperm are hydrogen peroxide superoxide anion and hydroxyl radicals. Besides human seminal plasma and sperm posses...

Since 195D many studies have been devoted to physical and chemical trans-Formations in plasmas. In this paper we do not propose to make an exhaustive overview but to underline the main development points oF plasma chemistry. First after a brie-F historical review, we present the plasma chemical reactors and describe the difFerent types oF plasma generators. We discuss then oF the two main param...

Blood transfusion centers are under considerable pressure to produce platelet concentrates with high quality and safety due to the short shelf life of 3-5 days as well as possible bacterial and viral contaminations. For a variety of reasons, many Europeans have changed their methods of component production from whole blood using the North American standard platelet-rich plasma method to the buf...

Apolipoprotein B (apoB) metabolism was investigated in 20 men with plasma triglyceride 0.66-2.40 mmol/l and plasma cholesterol 3.95-6. 95 mmol/l. Kinetics of VLDL(1) (S(f) 60-400), VLDL(2) (S(f) 20-60), IDL (S(f) 12-20), and LDL (S(f) 0;-12) apoB were analyzed using a trideuterated leucine tracer and a multicompartmental model which allowed input into each fraction. VLDL(1) apoB production vari...

Crocodile blood extracts; serum, plasma, hemoglobin, and crude leukocyte extract were prepared from whole blood of crocodiles (Crocodylus siamensis) by differential sedimentation. In this study, crocodile blood extracts possessed considerable cytotoxic activity. It was evident that, the serum, plasma, hemoglobin, and crude leukocyte extract have not significant cytotoxic potentials by the yello...

background: the purpose of this study was to evaluate antileishmanial effects of asa via no pathway in leishmania major infected balb/c mice. moreover, toxicity and pathological consequences of asa administration were investigated. methods: balb/c mice were infected with l. major and asa was inoculated orally after lesion appearance for its ability to modulate no and to modify leishmania infect...