Due to its high greenhouse effect, the use of SF6 as main insulating gas is restricted in electric power field. Along with aim environmental protection, search for new alternative gases a lower effect and higher insulation strength has received lot attention. The properties have vital impact on performance medium-voltage distribution equipment. Firstly, based existing liquefaction temperatures ...

Context. A longstanding problem in astrochemistry is how molecules can be maintained in the gas phase in dense interand circumstellar regions at temperatures well below their thermal desorption values. Photodesorption is a non-thermal desorption mechanism, which may explain the small amounts of observed cold gas in cloud cores and disk mid-planes. Aims. This study aims to determine the UV photo...

Methodologies based on (15)N enrichment (E) and (15)N natural abundance (NA) have been used to obtain quantitative estimates of the response of biological N2 fixation (BNF) of legumes (woody, grain and forage) and actinorhizal plants grown in artificial media or in soil exposed to elevated atmospheric concentrations of carbon dioxide e[CO2] for extended periods of time, in growth rooms, greenho...

The β-diketiminato nickel(I) complex K2[L(tBu)Ni(I)(N2(2-))Ni(I)L(tBu)] reacts with CO2 via reductive disproportionation to form CO and CO3(2-) containing products, whereas after employment of the Ni(I) precursor [L(tBu)Ni(I)(N2)Ni(I)L(tBu)] reductive coupling of CO2 was observed giving an oxalate bridged dinickel(II) complex. The addition of KC8 to the carbonate and oxalate compounds formed le...

We hypothesized that reductions in arterial PCO2 (PaCO2) below the apnea threshold play a key role in the pathogenesis of idiopathic central sleep apnea syndrome (ICSAS). If so, we reasoned that raising PaCO2 would abolish apneas in these patients. Accordingly, patients with ICSAS were studied overnight on four occasions during which the fraction of end-tidal CO2 and transcutaneous PCO2 were me...

Iron-based catalysts are the most suitable candidates for converting CO2 or CO2-rich syngas to hydrocarbons. However, several issues about mechanism of hydrogenation still unclear. In this work, we investigated performance an iron-based catalyst with H2/CO2, H2/CO/N2 and H2/CO/13CO2/N2 gas mixtures at same process conditions (T = 270°C, P 175 psi SV 3 NL/h/gcat). The rate was much lower than th...

Purpose:To assess the protective effect of glycine in an experimental model of Neonatal Necrotizing Enterocolitis (NEC). Methods: Fifty (50) neonatal Wistar rats, from a litter of six female rats and weighing 4 to 6 grams, were used. Five animals were cannibalized and the 45 remaining were distributed into three groups: the G1 normal control group (n=12); the G2 Group (n=16), of animals that un...

This study evaluated the effect of bilateral carotid chemodenervation on the cerebrovascular response to hypoxia in conscious rats. Cerebral blood flow was measured using 4-iodo[N-methyl-14C]antipyrine, and the total and perfused microvasculature was studied by injection of fluorescein isothiocyanate dextran and alkaline phosphatase staining. To maintain constant PCO2, hypoxia was achieved in c...