• An example of modelling results is presented in the form of a comparison between a comprehensive model with focus on the modelling of nitrogen oxide emissions and a simplified modelling approach to analyse a specific problem. (chalmers.se)
  • Neo Chemicals & Oxides Ltd. won a major court decision in Germany last week as the Federal Patent Court in Munich revoked the German designation of a key patent (EP 1435338) that had been claimed by Solvay Special Chem Japan Ltd., an affiliate of Brussels-based Solvay SA, on a cerium oxide-based product used to reduce nitrogen oxide emissions in diesel vehicle engines. (neomaterials.com)
  • With both model mixtures and real diesel exhaust gases it was found that platinumrhodium/γ-alumina displayed high activity for nitrogen oxides conversion, at 200 to 350°C. These catalysts are similar to the three-way catalysts used for controlling emissions from gasoline fuelled engines. (matthey.com)
  • Ground-level ozone is not emitted directly into the air, but forms when nitrogen oxide and volatile organic compounds (VOCs) from vehicle exhaust, factory emissions and other sources react with sunlight. (lung.ca)
  • You could ask - if nitrogen's so significant to our and our planet's well-being, why should we even worry about the emissions of its oxides? (mediawikibootstrapskin.co.uk)
  • One major part of those emissions are nitrogen oxides. (helsinki.fi)
  • Within modern internal combustion engines, Exhaust Gas Recirculation (EGR) is a method to control Nitrogen Oxides (NOx) emissions, produced as a by-product during the combustion process. (evanshalshaw.com)
  • Air from the environment, mostly a combination of Oxygen and Nitrogen, combines with fuel and ignites inside the combustion chamber, temperatures increase and produce NOx emissions. (evanshalshaw.com)
  • Nitrogen oxides are emissions produced as a by-product from the process of combustion, Nitrogen and Oxygen gases in the air react during combustion, especially at high temperatures. (evanshalshaw.com)
  • Nitrogen oxides are released to the air from the exhaust of converted to nitric acid or other compounds. (cdc.gov)
  • The recovered nitrogen oxides may be used in the manufacture of nitric acid or other compounds or decomposed into harmless gases. (ureaknowhow.com)
  • GLO is formed from chemical reactions among precursor gases, principally nitrogen oxides and volatile organic compounds in the presence of sunlight. (fraserbasin.bc.ca)
  • There was still concern about the potential for exposure to nitrogen oxides, nitrosamines, ammonia (7664417), inorganic acids and volatile organic compounds. (cdc.gov)
  • Nitrogen oxides are a mixture of gases that are composed of nitrogen and oxygen. (cdc.gov)
  • The removal of nitrogen oxides present in the gases emitted from sources such as electric power generation boilers, stationary internal combustion engines and gas turbine engines- all of which are likely to use excess oxygen to achieve maximum fuel efficiency-can be achieved by a selective reduction process using ammonia as the reducing agent, the reaction being carried out over a base metal oxide catalyst. (matthey.com)
  • It had been considered that hydrocarbons were ineffective for this reaction but recent work has indicated that with suitable catalysts it may be possible to use them in a process which removes nitrogen oxides from the exhaust gases of both diesel and lean-burn gasoline-fuelled engines. (matthey.com)
  • No wonder that on every air pollution map , the nitrogen oxide concentration level is one of the markers measured daily, aside from other gases and particulate matter. (mediawikibootstrapskin.co.uk)
  • Nitric oxide may be removed from gases which it is admixed by contacting the gases with aqueous solutions containing nitrate ions in sufficient concentration to oxidize the nitric oxide to nitrous acid and to retain it in the solution under stable conditions. (ureaknowhow.com)
  • Nitrogen oxides are gases. (helsinki.fi)
  • The nitrogen can also come into reaction with hydrogen, causing the creation of ammonia - a substance that can have a negative influence on human health and worsen the existing conditions such as asthma. (mediawikibootstrapskin.co.uk)
  • In the first set of experiments, they mixed the nitrogen oxides with ammonia. (helsinki.fi)
  • Nitrogen oxide is a reddish-brown gas that smells foul. (lung.ca)
  • Exposure to high levels of nitrogen oxides can damage the respiratory airways. (cdc.gov)
  • We do not know if exposure to nitrogen oxides will result in reproductive effects in humans. (cdc.gov)
  • But we do not know if exposure to nitrogen oxides might well as workers involved in the welding of metals may breath cause developmental effects in humans. (cdc.gov)
  • Low levels of nitrogen oxides in the air can irritate your eyes, Families with indoor gas stoves, space heaters, or indoor nose, throat, and lungs, possibly causing you to cough and cigarette smoke can minimize indoor exposure to nitrogen experience shortness of breath, tiredness, and nausea. (cdc.gov)
  • oxides by periodically allowing fresh outdoor air into the Exposure to low levels can also result in fluid build-up in the home. (cdc.gov)
  • In the U.S., the Occupational Safety and Health Administration (OSHA) has set the legal limit (permissible exposure limit) for nitric oxide exposure in the workplace as 25 ppm (30 mg/m3) over an 8-hour workday. (unicert.co.uk)
  • Nitrate Nitrogen oxide sensor Sulfur nitrides, which are valence isoelectronic with nitrogen oxides United States Clean Air Act, 42 U.S.C. § 7602 Seinfeld, John H. (wikipedia.org)
  • Breathing high levels of nitrogen oxides can cause rapid burning, spasms, and swelling of tissues in the throat and upper respiratory tract, reduced oxygenation of body tissues, a build-up of fluid in your lungs, and death. (cdc.gov)
  • Nitrogen oxides can contribute to ongoing respiratory issues at high levels and can also cause visual impairment. (fraserbasin.bc.ca)
  • The addition of some hydrocarbons to the exhaust is necessary to compensate for the greater amount of nitrogen oxides generally emitted from combustors operating under netoxidising conditions, and the properties of propene favour its use as the reducing agent. (matthey.com)
  • In the reaction, the formed salt is a nitrate, sodium and nitric oxide (II). (sciencealpha.com)
  • In response to a request from the International Chemical Workers Union on behalf of employees at Agrium, Inc. (SIC-2873), Beatrice, Nebraska, an investigation was begun into possible hazardous working conditions at Homestead Nitrogen Operations (formerly Cominco Fertilizers, Inc.). The facility produced agricultur al grade ammonium-nitrate. (cdc.gov)
  • Nitric oxide (IV) is an inorganic substance, a poisonous gas , red-brown color, with a characteristic pungent odor or yellowish liquid. (sciencealpha.com)
  • UNICERT is the leading inspection body in the area of Air Quality test for Nitric Oxide (NO) and objectives to reduce environmental emission/pollution and enhance environmental performance to the society. (unicert.co.uk)
  • Low levels of nitrogen oxides in the air can irritate your eyes, nose, throat, and lungs, possibly causing you to cough and experience shortness of breath, tiredness, and nausea. (cdc.gov)
  • Small levels of nitrogen oxides can cause nausea, irritated eyes and/or nose, fluid forming in lungs and shortness of breath. (fraserbasin.bc.ca)
  • Nitrogen oxides are released to the air from the exhaust of motor vehicles, the burning of coal, oil, or natural gas, and during processes such as arc welding, electroplating, engraving, and dynamite blasting. (cdc.gov)
  • Adding one diesel SUV to the city fleet in Delhi-NCR is equal to adding 25 to 65 small petrol cars in terms of nitrogen oxide, a very harmful gas that also forms deadly ozone," CSE said in a statement. (hindustantimes.com)
  • Nitrogen oxides are used in the production of nitric acid, lacquers, dyes, and other chemicals. (cdc.gov)
  • Nitrogen oxides are also used in rocket fuels, nitration of organic chemicals, and the manufacture of explosives. (cdc.gov)
  • Nitrogen oxides are used in the production of nitric acid, sources such as coal burning power plants or areas with lacquers, dyes, and other chemicals. (cdc.gov)
  • Nitrogen oxides are heavy motor vehicle use may be exposed to higher levels of also used in rocket fuels, nitration of organic chemicals, and nitrogen oxides. (cdc.gov)
  • Nitric oxide is a free radical, i.e., it has an unpaired electron, which is sometimes denoted by a dot in its chemical formula, i.e. (unicert.co.uk)
  • In mammals, including humans, nitric oxide is a signaling molecule in many physiological and pathological processes. (unicert.co.uk)
  • By applying an empirical model and monitoring threshold voltage shift due to current stress, it was found that both hole trapping and electron trapping are suppressed in the nitrogen-implanted oxide. (njit.edu)
  • Households that burn a lot of wood or use kerosene heaters and gas stoves tend to have higher levels of nitrogen oxides in them when compared to houses without these appliances. (cdc.gov)
  • At levels of 100 ppm, nitric oxide is immediately dangerous to life and health. (unicert.co.uk)
  • This fact sheet answers the most frequently asked health questions about nitrogen oxides. (cdc.gov)
  • How can nitrogen oxides affect my health? (cdc.gov)
  • The Department of Health and Human Services (DHHS), the International Agency for Research on Cancer (IARC), and the EPA have not classified nitrogen oxides for potential carcinogenicity. (cdc.gov)
  • Nitric oxide is a sharp sweet-smelling gas breathe. (cdc.gov)
  • When they injected nitrogen oxides into the chamber they found two competing processes in aerosol formation, which they have recently published in Nature and Science Advances . (helsinki.fi)
  • Our results indicate that nitrogen implantation into silicon substrate before gate oxide growth is an alternate way to incorporate nitrogen into the Si/SiO 2 interface. (njit.edu)
  • Chemical properties of nitrogen oxide (IV) are analogous to the properties of acidic oxides other nonmetals. (sciencealpha.com)
  • Charge-trapping properties of ultrathin gate oxide grown on a nitrogen-implanted silicon substrate were investigated using high-field Fowler-Nordheim injection. (njit.edu)
  • Misra, D 1999, ' Charge-trapping properties of gate oxide grown on nitrogen-implanted silicon substrate ', Applied Physics Letters , vol. 75, no. 15, pp. 2283-2285. (njit.edu)