Probabilistic models of human decompression sickness (DCS) have been successful in describing DCS risk observed across a wide variety of N2-O2 dives but have failed to account for the observed DCS incidence in dives with high PO2 during decompression. Our most successful previous model, calibrated with 3,322 N2-O2 dives, predicts only 40% of the observed incidence in dives with 100% O2 breathin...

Carbon dioxide (CO2) transformation into added-value products through non-thermal plasma (NTP) represents a novel technology of interest. The process involves, apart from CO2, mixtures different gases such as carbon monoxide (CO), oxygen (O2), nitrogen (N2), argon (Ar), and hydrogen (H2) for subsequent CO2 methanation. In this work, preliminary study the thermodynamic representation relevant in...

A fully atomistic simulation study is reported to provide mechanistic insight into the superior performance experimentally observed for a polymer membrane (Carta et al., Science, 2013, 339, 303-307). The membrane namely PIM-EA-TB is produced by a shape-persistent ladder polymer of intrinsic microporosity (PIM) with rigid bridged bicyclic ethanoanthracene (EA) and Tröger's base (TB). The simulat...

Prostaglandin release from microvessels isolated from the rabbit cerebral cortex was determined under three different atmospheric conditions: 100% O2 ("O2") room air, and 95% N2:5% CO2 ("N2-CO2"). Initial studies with homogenates prepared from rabbit cerebral microvessels (RCMV) indicated two pathways of enzymatic PGH2 transformation, namely PGI2 synthase and GSH-dependent PGH-PGE isomerase. We...

The cement industry is the second largest source of global man-made CO2emissions after power industry, and adoption O2/CO2combustion technology for kilns great significance in reducing CO2emissions. In this paper, effects pulverized coal mixed air combustion on velocity field, temperature CO2and NOx concentration distribution rotary kiln were investigated by CFD technique. results showed that t...

The main purpose of the present work was to evaluate efficiency gasification process three different types agro-forest biomass residue (rapeseed, softwood, and sunflower husks) along with characterization size-segregated particulates’ emissions. experiments were carried out in a drop tube furnace (DTF), using two gasifying agents (O2/N2 O2/N2/CO2) at atmospheric pressure constant temperature 10...

in this study, quality of white button mushrooms (agaricus bisporus) treated by water and citric acid was evaluated during storage at 2 temperatures (room temperature and 4°c). the effect of modified atmosphere packaging (map, by 4±1% co2, 6±1% o2 and the remaining n2) with or without water absorbent (silicagel) was also evaluated. samples were assessed for their organoleptic properties (textur...

Stainless steels in atmospheres containing H2O form a Cr2O3 scale in the early stage of oxidation. However, the Cr2O3 scale gradually degrades with time. In order to determine the effect of H2O on the deterioration of a Cr2O3 scale, evaporation behavior of Cr2O3 in N2-O2-H2O atmospheres was investigated. The rate of mass loss in a N2-O2-H2O atmosphere was found to be one order of magnitude high...

Studies were undertaken to investigate the effect of different modified atmospheric packaging (MAP) gaseous combinations on Campylobacter and the natural microflora on poultry fillets. Skinless chicken fillets were stored in gaseous mixtures of 10%, 30%, 50%, 70% and 90% CO2 balanced with N2, 80:20% O2:N2 and 40:30:30% CO2:O2:N2 and control conditions (air) at 2 °C. Samples were analysed period...