Hydrogen sulfide exists widely in mammalian tissues and plays a vital role in physiological and pathophysiological processes. However, striking differences with orders of magnitude were observed for the detected hydrogen sulfide concentrations in biological matrices among different measurements in literature, which lead to the uncertainty for examination the biological relevance of hydrogen sul...

The role of nickel as catalyst on the conversion of methane and ethylene in a gas phase flow reactor in the absence of oxygen is studied. In this study, nickel in its different forms is used as catalyst. The role of pressure, flow rate, and temperature on the conversion of feed gases is investigated. The experiments have been carried out in the presence and absence of the catalysts to measure t...

The measurement of sulfide, especially hydrogen sulfide, has held the attention of the analytical community due to its unique physiological and pathophysiological roles in biological systems. Electrochemical detection offers a rapid, highly sensitive, affordable, simple, and real-time technique to measure hydrogen sulfide concentration, which has been a well-documented and reliable method. This...

The main objective of this study is the modelling and optimization of an industrial Hydrocracker Unit (HU) by means of Adaptive Neuro Fuzzy Inference System (ANFIS) model. In this case, some data were collected from an industrial hydrocracker plant. Inputs of an ANFIS include flow rate of fresh feed and recycle hydrogen, temperature of reactors, mole percentage of H2 and H2S, feed flow rate and...

hydrogen sulfide (h2s) prevents and treats a variety of disorders via its cytoprotective effects. however, the effects of h2s on rats with cisplatin (cp) nephrotoxicity are unclear. the aim was to study the effects of h2s on rats with cp nephrotoxicity. thirty male sprague-dawley rats were divided into three groups: control group, nephrotoxic group received single dose of cp (6 mg kg-1) and nep...

A simple and economical minibioreactor-gas collector system for determination of hydrogen sulfide produced by a microorganism was designed. The detection of hydrogen sulfide was based on the reaction between the hydrogen sulfide in the gas stream from the culture, and a lead acetate solution 0.090 mol/L, contained in a tube gas collector; the conductimetric back titration of lead excess was mad...

p C P ydrogen sulfide, like nitric oxide, was best known as a oxic pollutant before becoming recognized as a key egulator of several physiologic processes. In recent ears, evidence has accumulated to suggest important oles for hydrogen sulfide as a mediator of several asects of gastrointestinal and liver function. Moreover, lterations in hydrogen sulfide production could contribte to disorders ...