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  • hydrogen sulfide
  • Very recently, a third endogenously produced gaseous signaling molecule, hydrogen sulfide (H 2 S), has emerged as a potentially important mediator of CV homeo stasis and cytoprotection ( 3 ). (pnas.org)
  • A process for reducing sulfur content in a gaseous stream with the production of elemental sulfur by first treating the gaseous steam with hydrogenation and hydrolysis to convert substantially all of the sulfur components therein to hydrogen sulfide. (google.es)
  • Thereafter, the gaseous steam is contacted in an oxidation reactor with an acid catalyst at a temperature of about 150 C. to about 350 C. to convert hydrogen sulfide to elemental sulfur. (google.es)
  • reactive
  • Diurnal variations of water total mercury (THg), reactive mercury (RHg), and dissolved gaseous mercury (DGM) concentrations and mercury flux were monitored at two sites in warm and cold season in an alkaline reservoir in Southwestern China. (environmental-expert.com)
  • In consideration of the reactive nature of gaseous chlorine dioxide, the Panel assessed to what extent chlorinated species are generated by the interaction of gaseous chlorine dioxide, under the proposed conditions of use, with some model food matrices. (europa.eu)
  • Reduction
  • To avoid the excessive costs and risks associated with excavation, transportation, and disposal of the chromium contamination at locations such as Pantex, Hanford, and the Sandia National Laboratory, the Department of Energy (DOE) is testing the In-Situ Gaseous Reduction System (IGRS). (cpeo.org)
  • Field of the Invention This invention relates to the recovery of certain high purity metals from metal-containing ores or raw materials, and particularly to a continuous gaseous reduc tion process for obtaining relatively pure copper, nickel, cobalt, silver or gold from a solution of the salt or salts or one or more of these metals by reduction with a reducing gas. (google.com)
  • 2. Brief Description of the Prior Art Reducing gases, such as hydrogen, sulfur dioxide and carbon monoxide, have been used to treat solutions containing copper, nickel, or certain other metal ions to recover high purity metal powder produced by gaseous reduction. (google.com)
  • Such gaseous reduction from solution is presently carried out most frequently in an autoclave in a batch or semi-continuous process. (google.com)
  • liquid
  • This article reviews liquid microdroplet generation in gaseous and liquid environments, covering the general characteristics of generators and the specific methods and technologies used for generation. (springer.com)
  • content
  • It is expected that SAE J2600 will be revised to include the receptacle content of SAE TIR J2799, in which case the resulting SAE J2600 will provide connector hardware requirements for gaseous hydrogen fueling at all working pressures. (sae.org)
  • Then reducing the water content of the gaseous stream. (google.es)
  • Then reducing the water content of the gaseous stream to optimize chemical equilibrium. (google.es)
  • environment
  • The method includes providing a substance fromwhich the fibers are to be composed to a tip of an extrusionelement, applying an electric field to the extrusion element in adirection of the tip, controlling a gaseous environment about wherethe fibers are to be electrospun, and electrospinning the substancefrom the tip of the extrusion element by an electric fieldextraction of the substance from the tip into the controlledgaseous environment. (rti.org)
  • IPC No. U.S.Electrospinning in a controlled gaseous environment (Patent No. 7297305 . (rti.org)
  • studies
  • Since the recent discovery that H 2 S is a powerful gaseous signaling molecule, studies have begun to characterize the biological profile of this promiscuous gas. (pnas.org)
  • products
  • The gaseous products may also be collected for later use or distribution. (google.es)
  • From the data provided by the applicant, under domestic refrigerator-like experimental conditions, the treatment of model food matrices with gaseous chlorine dioxide led to low amounts of by-products and did not produce chlorinated organic by-products. (europa.eu)
  • Consequently, considering the negligible amounts in model food matrices of the parent compound and of its by-products chlorite and chlorate, together with the available toxicity database, the Panel concluded that, under the domestic refrigerator-like conditions of use proposed by the applicant, the consumption of foods treated with gaseous chlorine dioxide would not be a safety concern. (europa.eu)
  • technology
  • The technology under development uses a gaseous reagent in unsaturated soils to reduce the toxicity and mobility of hexavalent chromium. (cpeo.org)
  • safety
  • Safety of gaseous chlorine dioxide for use. (europa.eu)
  • Following a request from the European Commission, the EFSA Panel on Food Additives and Nutrient Sources added to Food (ANS) provides a scientific opinion regarding the safety of use of gaseous chlorine dioxide as a preservative that is slowly released in cold food storage areas. (europa.eu)