Exploration of oil and natural gas from shale deposits can bring to the surface radioactivity. Naturally occurring Uranium-238 and Thorium-232 as part of their decay chains can produce radium isotopes, which are themselves precursors of radon gas. Due to the solubility of radium and its contaminated impact on the environments and health concerns, regulations on the levels of Ra226 and Ra228 in ...

The investigation of elemental sulfur solubility plays critical roles on sour gas reservoir development. In this paper, the was directly measured by static method with samples from well M1 a in Sichuan Basin. results show that ranges 0.001 g/cm 3 to 0.968 at 40–98.9 MPa and 15–49.8 MPa. increases increasing temperature pressure, especially when pressure is greater than 30 Moreover, H 2 S conten...

We explored our model by displaying its new capabilities, testing its sensitivity to variations in input data and illustrating its use. Its multiple-gas character allows simulation of the mechanisms governing concentration and second gas effects. Simulating the volume of a standing bellows makes it possible to test algorithms for automated closed-circuit anaesthesia. Using desflurane, the model...

This mini-review summarizes current ideas of how hyperbaric gases (>1-10 atmospheres absolute) affect neuronal mechanisms of excitability through molecular interaction with membrane components. The dynamic nature of the lipid bilayer, its resident proteins, and the underlying cytoskeleton make each respective nanostructure a potential target for modulation by hyperbaric gases. Depending on the ...

cells by the rapid release of gas pressure was examined under yarious conditions of pressure, temperature, treatment time and water content of the cells. Wet cells of baker's yeast were completely destroyed, after the microorganisms had been saturated with C02 gas at 40eC and 40 atm for more than 3h when the pressure was suddenly discharged. On the other hand, dry cells were poorly kil}ed even ...

aerosol A colloidal dispersion of liquid particles in a gas, e.g., SO2, which will react with the OH radical in the atmosphere to form tiny droplets of sulfuric acid (H2SO4). hazard In a volcanic context, hazard refers to the phenomena produced by a volcanic event and is directly related to Risk, where Risk1⁄4Hazard Vulnerability, with vulnerability referring to the consequences for population ...

Differences in physical and chemical properties between polymorphic compounds (e.g. solubility, dissolution rate, chemical reactivity, resistance to degradation, bioavailability) are highly significant for the pharmaceutical industry, which requires effective methods to control polymorphism of organic crystals [1, 2]. In particular, to improve the functionality such as solubility or bioavailabi...

This work presents the heterogeneous kinetics of the reaction of CH3SCH3 (dimethyl sulphide, DMS) with O3 (ozone) in aqueous solutions of different ionic strengths (0, 0.1 and 1.0M NaCl) using the wetted-wall flowtube (WWFT) technique. Henry’s law coefficients of DMS on pure water and on different concentrations of NaCl (0.1M – 4.0M) in the WWFT from UV spectrophotometric measurements of DMS in...