UNLABELLED Inhaled anesthetics, including the gaseous anesthetics nitrous oxide and xenon, are thought to act by interacting directly with ion-channel receptors. In contrast, little is known about the mechanism of action of inert gases that show only narcotic potency at high pressures, such as nitrogen or argon. In the present study, we investigated the effects of selective gamma-aminobutyric a...

Nitrogen migration in ZnO was investigated by nitrogen isotope diffusion. The samples were deposited using plasma-assisted pulsed laser deposition. concentration depth profiles obtained from secondary-ion-mass spectrometry measurements, and gas effusion the molecular flux measured as a function of heating rate. Measurements performed on sample stacks that doped with isotopically enriched 15N 14...

BACKGROUND Even the best cancer surgery is usually associated with minimal residual disease. Whether these remaining malignant cells develop into clinical recurrence is at least partially determined by adequacy of host defense, especially natural killer cell function. Anesthetics impair immune defenses to varying degrees, but nitrous oxide appears to be especially problematic. We therefore test...

hydroalcoholic extract (70% ethanol extract) of tubers of momordica tuberosa cogn. (cucurbitaceae) was subjected to preliminary phytochemical screening by qualitative tests. nitric oxide scavenging activity was performed by griess reagent method. and nephroprotective activity was assessed in gentamicin, cisplatin and paracetamol induced renal damage in wistar rats (150-200 g) by standard method...

The reaction pathways of N2 and N2O formation in the direct decomposition and reduction of NO by NH3 were investigated over a polycrystalline Pt catalyst between 323 and 973 K by transient experiments using the temporal analysis of products (TAP-2) reactor. The interaction between nitric oxide and ammonia was studied in the sequential pulse mode applying NO. Differently labelled nitrogen and ni...

1 This paper aimed to compare household waste, separated pig solids, food waste, pig slaughterhouse sludge 2 and green algae regarding processes ruling nitrogen dynamic during composting. For each waste, three 3 composting simulations were performed in parallel in three similar reactors (300L), each one under a constant 4 aeration rate. The aeration flows applied were comprised between 100 and ...

This paper aimed to compare household waste, separated pig solids, food waste, pig slaughterhouse sludge and green algae regarding processes ruling nitrogen dynamic during composting. For each waste, three composting simulations were performed in parallel in three similar reactors (300 L), each one under a constant aeration rate. The aeration flows applied were comprised between 100 and 1100 L/...

dioxide were examined by electrocardiographic records. Bradycardia and arrhythmias were observed following exposure to 20 ppm for 3 hours (76). These alterations were attributed to changes in parasympathetic nervous activity following exposure. The levels used were high relative to those obtained from unaged tobacco smoke. In addition, it has been suggested that enzyme-inhibiting effects associ...