Acute effects of urban air pollution on respiratory health of children with and without chronic respiratory symptoms. (1/56)
OBJECTIVES: To investigate to what extent different components of air pollution are associated with acute respiratory health effects in children with and without chronic respiratory symptoms. METHODS: During three consecutive winters starting in 1992-3, peak expiratory flow (PEF) and respiratory symptoms were registered daily in panels of children of 7-11 years old with and without symptoms, living in urban areas with high traffic intensity in The Netherlands. Simultaneously, panels of children living in non-urban areas were studied. Daily measurements of particles with aerodynamic diameter < 10 microns (PM10), black smoke (BS), sulphate, SO2, and NO2 were performed in both areas. RESULTS: The contrast in particle concentrations (PM10, BS, and sulphate) between urban and non-urban areas was small, but there was more contrast in the concentrations of SO2 and NO2. In children with symptoms from both areas, significant associations were found between PM10, BS, and sulphate concentrations and the prevalence of symptoms of the lower respiratory tract (LRS) and decrements in PEF. Particle concentrations were also associated with use of bronchodilators in the urban areas, but not in the non-urban areas. After stratification by use of medication, stronger associations were found in children who used medication than in children who did not use medication. The magnitude of the estimated effects was in the order of a twofold increase in the use of bronchodilators, a 50% increase in LRS, and an 80% increase in decrements in PEF for a 100 micrograms/m3 increase in the 5 day mean PM10 concentration. In children without symptoms, significant associations were found between concentrations of PM10 and BS and decrements in PEF in both areas, but these associations were smaller than those for children with symptoms. No associations with respiratory symptoms were found. CONCLUSIONS: The results suggest that children with symptoms are more susceptible to the effects of particulate air pollution than children without symptoms, and that use of medication for asthma does not prevent the adverse effects of particulate air pollution in children with symptoms. (+info)Belgian coca-cola-related outbreak: intoxication, mass sociogenic illness, or both? (2/56)
An epidemic of health complaints occurred in five Belgian schools in June 1999. A qualitative investigation described the scenario. The role of soft drinks was assessed by using a case-control study. Cases were students complaining of headache, dizziness, nausea, vomiting, abdominal pain, diarrhea, or trembling. Controls were students present at school on the day of the outbreak but not taken ill. An analysis was performed separately for school A, where the outbreak started, and was pooled for schools B-E. In school A, the attack rate (13.2%) was higher than in schools B-E (3.6%, relative risk = 3.6, 95% confidence interval (CI): 2.5, 5.3). Exclusive consumption of regular Coca-Cola (school A: odds ratio (OR) = 29.7, 95% CI: 1.32, 663.6; schools B-E: OR = 7.3, 95% CI: 2.9, 18.0) and low mental health score (school A: OR = 16.1, 95% CI: 1.3, 201.9; schools B-E: OR = 3.1, 95% CI: 1.5, 6.6) were independently associated with the illness. In schools B-E, consumption of Fanta, consumption of Coca-Cola light, and female gender were also associated with the illness. It seems reasonable to attribute the first cases of illness in school A to regular Coca-Cola consumption. However, mass sociogenic illness could explain the majority of the other cases. (+info)Genetic and immunochemical characterization of thiocyanate-degrading bacteria in lake water. (3/56)
Natural aquatic and soil samples were screened for the presence of thiocyanate-degrading bacteria. Using thiocyanate supplementation, we established an enrichment culture containing such bacteria from lake water. The dominant bacteria had the scnC-LS5 gene encoding thiocyanate hydrolase, which was closely related to the enzyme found previously in Thiobacillus thioparus THI115 isolated from activated sludge. (+info)Chronic obstructive pulmonary disease in two cities of contrasting air quality. (4/56)
Spirometric tests of 3280 Ottawa residents in 1969-71 and 2208 Sudbury residents in 1972-73 showed that the mean ratio of forced vital capacity to forced expiratory volume in 1 second was lower in Sudbury, where sulfur dioxide concentrations in the air tend to be appreciably higher than in Ottawa. This difference was significant for both males and females considered separately, and held true when age and smoking habits were taken into account. The prevalence of symptomatic chronic bronchitis was significantly higher in Sudbury males than in Ottawa males, but no such difference could be detected in females. (+info)Health effects of the gas-aerosol complex. Report to Special Committee on Health and Ecological Effects of Increased Coal Utilization. (5/56)
Combustion products derived from the burning of coal are definitely capable of producing adverse human health effects. No single component of the combustion product mixture is solely responsible. Rather, effects are due to a group of compounds, both gases and aerosols, in the effluents of stationary source combustion processes. Although incompletely defined, the individual components of the gas-aerosol complex appear to be capable of interacting both in terms of atmospheric chemistry and health effects. The three primary air quality standards pertinent to regulating coal combustion all represent to some extent indirect, although reasonable, measures of this gas-aerosol complex. As a group, these standards appear to be adequate to protect human health. Conventional toxicological considerations suggest that the adverse health effects of any necessary increase in coal combustion effluents would be greatest per unit of coal in those areas which are most heavily populated and have the highest preexisting levels of the gas-aerosol complex. In order to decrease the degree of uncertainty for future decisions of this type, it is important that prospective epidemiological and air monitoring studies be initiated in conjunction with any large scale introduction of coal use. (+info)Mediation of transforming growth factor-beta(1)-stimulated matrix contraction by fibroblasts: a role for connective tissue growth factor in contractile scarring. (6/56)
Excessive cell-mediated tissue contraction after injury can lead to morbid contractile scarring in the body. In the eye this can cause blindness because of posterior capsule opacification, proliferative vitroretinopathy, failure of glaucoma filtration surgery, and corneal haze. During repair, transforming growth factor (TGF)-beta and connective tissue growth factor (CTGF) genes are co-ordinately expressed. Although TGF-beta and CTGF stimulate new matrix deposition, their role and regulation during contractile scarring is unknown. In this study, an in vitro model of collagen matrix contraction culminating from tractional forces generated by fibroblasts showed that both TGF-beta(1) and CTGF-stimulated contraction. Using a specific anti-sense oligodeoxynucleotide to CTGF the procontractile activity of TGF-beta(1) was found to be mediated by CTGF. During contraction fibroblasts produced similar levels of matrix metalloproteinases (MMPs)-2 and -9 with TGF-beta(1) or CTGF and a modest increase in MMP-1 with CTGF only (indicated by zymography and enzyme-linked immunosorbent assay). The requirement of MMPs for contraction was demonstrated using a broad-spectrum synthetic inhibitor. This study demonstrates a new function for CTGF in mediating matrix contraction by fibroblasts involving MMPs and suggests a novel regulatory mechanism for TGF-beta-stimulated contraction. Inhibition of CTGF activity or gene transcription could be a suitable target for anti-scarring therapies. (+info)Ion chromatography applications in the determination of HF, HCl, NOx, SOx on stationary emissions. (7/56)
In this work, specific topics will be covered in order to verify an effective, routine application of ion chromatography as a suitable and approved technique for emission monitoring in the determination of HF, HCl, NOx and SOx on stationary emission. A review of the analytical methods as proposed by recent updates in Italian environmental law and the problems encountered in the application of this method, such us the interference due to high level of carbonate, high hydroxides concentration particularly on SOx and NOx absorbing solution, are considered in the present work. The sample treatments before the IC analysis, this to reduce the matrix interference due to the strong basic solutions used to monitor different stationary emissions, are also examined. Some modifications in sampling are explored to find more suitable conditions for the IC analysis. (+info)Studies on photochemical reactions of air pollutants. XIV.Photooxidation of sulfur dioxide in air by various air pollutants. (8/56)
Upon exposure to sunlight, or to artificial light at wavelengths longer than 290 nm, sulfur dioxide in air underwent oxidation to give sulfur trioxide in the presence of air pollutants such as biacetyl (2,3-butanedione), benzaldehyde and nitrogen dioxide, but not in their absence. Only nitrogen dioxide completely oxidized sulfur dioxide to sulfur trioxide. (+info)'Sulfur Oxides' is a term used in medicine to refer to harmful air pollutants, primarily sulfur dioxide (SO2), produced by the burning of fossil fuels and industrial processes, which can cause respiratory issues, aggravate heart conditions, and contribute to acid rain formation.
Sulfur oxides (SOx) are chemical compounds that contain sulfur and oxygen in various oxidation states. The term "sulfur oxides" is often used to refer specifically to sulfur dioxide (SO2) and sulfur trioxide (SO3), which are the most common and widely studied SOx compounds.
Sulfur dioxide is a colorless gas with a sharp, pungent odor. It is produced naturally by volcanic eruptions and is also released into the air when fossil fuels such as coal and oil are burned for electricity generation, industrial processes, and transportation. Exposure to high levels of sulfur dioxide can cause respiratory symptoms such as coughing, wheezing, and shortness of breath.
Sulfur trioxide is a colorless liquid or solid with a pungent, choking odor. It is produced industrially for the manufacture of sulfuric acid and other chemicals. Sulfur trioxide is highly reactive and can cause severe burns and eye damage upon contact.
Both sulfur dioxide and sulfur trioxide contribute to air pollution and have been linked to a range of health and environmental effects, including respiratory problems, acid rain, and damage to crops and forests. As a result, there are regulations in place to limit emissions of these pollutants into the air.
Sulfur (S) is a non-metallic element, atomic number 16, found in several organic and inorganic compounds, essential for the formation of amino acids and proteins, and having a role in certain biological processes as a component of coenzymes and vulcanization of rubber.
Sulfur is not typically referred to in the context of a medical definition, as it is an element found in nature and not a specific medical condition or concept. However, sulfur does have some relevance to certain medical topics:
* Sulfur is an essential element that is a component of several amino acids (the building blocks of proteins) and is necessary for the proper functioning of enzymes and other biological processes in the body.
* Sulfur-containing compounds, such as glutathione, play important roles in antioxidant defense and detoxification in the body.
* Some medications and supplements contain sulfur or sulfur-containing compounds, such as dimethyl sulfoxide (DMSO), which is used topically for pain relief and inflammation.
* Sulfur baths and other forms of sulfur-based therapies have been used historically in alternative medicine to treat various conditions, although their effectiveness is not well-established by scientific research.
It's important to note that while sulfur itself is not a medical term, it can be relevant to certain medical topics and should be discussed with a healthcare professional if you have any questions or concerns about its use in medications, supplements, or therapies.
Higher sulfur oxides
ISBN 978-0-08-037941-8. v t e (Sulfur oxides, Sulfur(VI) compounds, Non-stoichiometric compounds, Interchalcogens, All stub ... Higher sulfur oxides are a group of chemical compounds with the formula SO3+x where x lies between 0 and 1. They contain peroxo ... The structure of the polymers is based on β-SO3 (one of the three forms of solid SO3) with oxide bridges (−O−) replaced ... O−O) groups, and the oxidation state of sulfur is +6 as in SO3. Monomeric SO4 can be isolated at low temperatures (below 78 K) ...
Lower sulfur oxides
ISBN 978-0-08-037941-8. R. Steudel (2003). "Sulfur-Rich Oxides SnO and SnO2". In Steudel, R. (ed.). Elemental Sulfur und Sulfur ... and a series of cyclic sulfur oxides, SnOx (x = 1, 2), based on cyclic Sn rings. Interest in the lower sulfur oxides has ... The lower sulfur oxides are a group of inorganic compounds with the formula SmOn, where 2m > n. These species are often ... Sulfur monoxide (SO) and its dimer (S2O2) have been trapped at low temperature. Disulfur dioxide (S2O2) is a dimer of sulfur ...
Sulfur oxide
... (SOx) refers to one or more of the following: Lower sulfur oxides (SnO, S7O2 and S6O2) Sulfur monoxide (SO) and ... Sulfur oxide refers to many types of sulfur and oxygen containing compounds such as SO, SO2, SO3, S7O2, S6O2, S2O2, etc. ... its dimer, Disulfur dioxide (S2O2) Sulfur dioxide (SO2) Sulfur trioxide (SO3) Higher sulfur oxides (SO3 and SO4 and polymeric ...
Energy poverty and cooking
The most well understood of these substances are carbon monoxide (CO); small particulate matter; nitrous oxide; sulfur oxides; ...
Pollutant
... sulfur oxides; nitrogen oxides; and lead. The National Emissions Standards for Hazardous Air Pollutants are additional emission ...
Household air pollution
The most well understood of these substances are carbon monoxide (CO); small particulate matter; nitrous oxide; sulfur oxides; ... sulfur dioxide (SO2), and a variety of organic air pollutants. Technology-based solutions to this problem tend to focus on the ... sulfur dioxide (SO2), and a variety of organic air pollutants (e.g., formaldehyde, 1,3-butadiene, benzene, acetaldehyde, ...
Ralf Steudel
"Sulfur-Rich Oxides SnO and SnO2". In Steudel, R. (ed.). Elemental Sulfur und Sulfur-Rich Compounds II. Berlin-Heidelberg: ... He also discovered routes to the lower sulfur oxides. One example is S8O. Much of his work benefited from the use of high ... Steudel made many contributions to the chemistry of sulfur. His group prepared several new allotropes, often using titanocene ... was a German chemist and university professor who was known for his research in the area of sulfur chemistry as well as for his ...
Air pollution in Germany
Sulfur oxides (SOx) - Particularly sulfur dioxide. Produced by the combustion of coal and petroleum. NOx (nitrogen oxides, ... However, additional reductions are needed for nitrogen oxides and ammonia. The necessary reductions in nitrogen oxide emissions ... For sulfur dioxide and volatile organic compounds it is sufficient to apply the measures already adopted and implemented in the ... is a kind of air pollution and results from large amounts of coal burning in an area caused by a mixture of smoke and sulfur ...
Sulfur monoxide
The S−O bond length of 148.1 pm is similar to that found in lower sulfur oxides (e.g. S8O, S−O = 148 pm) but is longer than the ... In the laboratory, sulfur monoxide can be produced by treating sulfur dioxide with sulfur vapor in a glow discharge. It has ... Chao, P.; Lemal, D. M. (1973). "Sulfur Monoxide Chemistry. The Nature of SO from Thiirane Oxide and the Mechanism of Its ... Schenk, W. A. (1987). "Sulfur Oxides as Ligands in Coordination Compounds. Angewandte Chemie International Edition in English ...
Metal sulfur dioxide complex
doi:10.1016/S0010-8545(99)00191-5. Schenk, W. A. (1987). "Sulfur Oxides as Ligands in Coordination Compounds". Angew. Chem. Int ... In organometallic chemistry, metal sulfur dioxide complexes are complexes that contain sulfur dioxide, SO2, bonded to a ... S-sulphinate has sulfur-oxygen stretching frequencies from 1250-1000 cm−1 and 1100-1000 cm−1. The O, O'-sulphinate and O- ... Sulfur dioxide forms complexes with many transition metals. Most numerous are complexes with metals i in oxidation state 0 or + ...
Aeolis quadrangle
Iron-oxides, Mg, and sulfur produced sulfates. The Murray formation was sampled at several locations for this research: ... These types of iron and sulfur could have been used by living organisms. Carbon, hydrogen, oxygen, sulfur, nitrogen, and ... Sulfates and Iron oxides have been detected in the lower formation and anhydrous phases in the upper layer. There is evidence ... They are enriched in the elements phosphorus, sulfur, chlorine, and bromine-all of which can be carried around in water ...
Phosphor
Sulfur can be also removed as sulfur oxides. ZnS and CdS phosphors degrade by reduction of the metal ions by captured electrons ... and nonradiative zinc oxide and zinc sulfate on the surface; the reactive hydrogen removes sulfur from the surface as hydrogen ... Red: Yttrium oxide-sulfide activated with europium is used as the red phosphor in color CRTs. The development of color TV took ... Oxide phosphors can degrade rapidly in presence of fluoride ions, remaining from incomplete removal of flux from phosphor ...
Diethyl sulfate
This compound is also combustible; when burned, sulfur oxides, ether, and ethylene are produced. Diethyl sulfate is a strong ...
Borosulfate
Other possible terms are sulfatoborates or boron-sulfur oxides. The ratio of sulfate to borate reflects the degree of ... When heated to around 500 °C the borosulfates decompose by emitting SO3 vapour and form a metal sulfate and boric oxide. ... Borosulfates are formed by heating boric oxide, oleum, or sulfuric acid, with metal carbonates. The degree of condensation is ... These arrangements of oxygen around boron and sulfur can have forms resembling silicates. The first borosulfate to be ...
Acid rain
... is caused by emissions of sulfur dioxide and nitrogen oxide, which react with the water molecules in the atmosphere ... The main source of sulfur and nitrogen compounds that result in acid rain are anthropogenic, but nitrogen oxides can also be ... The most important gas which leads to acidification is sulfur dioxide. Emissions of nitrogen oxides which are oxidized to form ... Combustion of fuels produces sulfur dioxide and nitric oxides. They are converted into sulfuric acid and nitric acid. In the ...
Liquefied natural gas
"IMO 2020 - cutting sulphur oxide emissions". www.imo.org. Retrieved 2021-07-05. "BHP weighing LNG power for iron ore ships". ... Replacement of high sulphur bunker fuel with sulphur-free LNG is required on a major scale in the marine transport sector, as ... The most important gas quality concerns involve the sulphur and mercury content and the calorific value. Due to the sensitivity ... total sulphur, CO2 and Hg content; 2 - to guard against the formation of liquids or hydrates in the networks, through maximum ...
Bicycle tire
Sulphur and zinc oxide facilitate vulcanization. Some tires have a dual-compound tread that is tougher in the middle and ...
Environmental impact of electricity generation
Ozone, sulfur dioxide, NO2 and other gases are often released, as well as particulate matter. Sulfur and nitrogen oxides ... As well as greenhouse gases, these power plants emit nitrogen oxides (NOx) but this is less dangerous than NOx from gas ...
Vog
When smog levels are high, the sky appears yellowish-grey because nitrogen oxides are yellow. In contrast, sulfur oxides are ... Vog is formed when sulfur oxides emitted by a volcano react with moisture to form an aerosol. The aerosol scatters light, thus ... Vog is created when volcanic gases (primarily oxides of sulfur) react with sunlight, oxygen and moisture. The result includes ... "Sulfur Dioxide" on US Environmental Protection Agency web site "Vog: A Volcanic Hazard" on USGS web site HOW VOG IS MADE: A ...
Octasulfur monoxide
It is a type of sulfur oxide. A crystalline compound composed of cyclooctasulfur monoxide and antimony pentachloride in ... Sulfur oxides, Eight-membered rings, Substances discovered in the 1970s, All stub articles, Inorganic compound stubs). ... "Preparation of cyclo-Octasulfur Oxide, S8O". Angewandte Chemie International Edition in English. 11 (4): 302-303. doi:10.1002/ ... "Crystal and Molecular Structure of Cyclooctasulfur Oxide, S8O". Angewandte Chemie International Edition in English. 12 (5): 423 ...
Oxide
Sulfur dioxide, the principal oxide of sulfur, is emitted from volcanoes. Nitrous oxide ("laughing gas") is a potent greenhouse ... Although most metal oxides are crystalline solids, some oxides are molecules. Examples of molecular oxides are carbon dioxide ... It is produced by the oxidation of sulfur to sulfur dioxide, which is separately oxidized to sulfur trioxide: S + O 2 ⟶ SO 2 {\ ... One exception is copper, for which the highest oxidation state oxide is copper(II) oxide and not copper(I) oxide. Another ...
Aquifex
... oxides thiosulfate, molecular hydrogen, and sulfur within their respiratory pathway. Phylogenetic trees that are based ...
Alvin M. Weinberg
Whereas fossil-fuel burners emit oxides of carbon, nitrogen, and sulfur... there is no intrinsic reason why nuclear systems ...
Sodium hydroxide
... also reacts with acidic oxides, such as sulfur dioxide. Such reactions are often used to "scrub" harmful ... oxide, sodium metal, and hydrogen gas. This is due to the lower enthalpy of formation of iron(III) oxide (−824.2 kJ/mol) ... aluminium oxide) which is the raw material used to produce aluminium metal via the electrolytic Hall-Héroult process. Since the ... calcium oxide, CaO), whereby a solution of sodium hydroxide was obtained. European soap makers also followed this recipe. When ...
Coal pollution mitigation
... combustion of coal often leads to production of nitrogen oxides. Sulfur dioxide and nitrogen oxides are primary causes of acid ... The primary focus is on sulfur dioxide (SO2) and nitrogen oxides (NOx), the most important gases which caused acid rain; and ... Primary focus is on removing sulfur dioxide (SO2) and nitrogen oxides (NOx), the most important gases which caused acid rain; ... It is possible to remove most of the sulfur dioxide (SO2), nitrogen oxides (NOx), and particulate matter (PM) emissions from ...
Roasting (metallurgy)
During roasting, the sulfide is converted to an oxide, and sulfur is released as sulfur dioxide, a gas. For the ores Cu2S ( ... Examples of such volatile oxides include As2O3, Sb2O3, ZnO and sulfur oxides. Careful control of the oxygen content in the ... The second reaction involving an oxide ore is facilitated by addition of elemental sulfur. Carbonate ores react in a similar ... This would raise the temperature of the ore to the point where its sulfur content would become its source of fuel, and the ...
Glass production
Sulfur oxides are produced as a result of the glass melting process. Manipulating the batch formula can effect some limited ... Nitrogen oxides are a natural product of the burning of gas in air and are produced in large quantities by gas-fired furnaces. ... At the hot end a very thin layer of tin(IV) oxide is applied either using a safe organic compound or inorganic stannic chloride ... This is usually accomplished through the injection of a sulfur- or fluorine-containing gas mixture into bottles at high ...
TCMTB
It decomposes on heating producing hydrogen cyanide, sulfur oxides, and nitrogen oxides. The degradation products are 2- ...
Ammonium sulfite
It emits sulfur dioxide and oxides of nitrogen upon heating to decomposition. The specific gravity of ammonium sulfite is 1.41 ... Ammonium sulfite can be prepared by the reaction of ammonia with sulfur dioxide in aqueous solution: 2 NH3 + SO2 + H2O → (NH4) ... Ammonium sulfite is the precursor to ammonium thiosulfate, by reaction with elemental sulfur. For cosmetics, ammonium sulfite ... 2SO3 Ammonium sulfite is produced in gas scrubbers, now obsolete, consisting of ammonium hydroxide to remove sulfur dioxide ...
Migratory insertion
... these include sulfur dioxide, carbon dioxide, and nitric oxide. These reactions have limited or no practical significance, but ... As discussed in the article on Metal sulfur dioxide complexes, the insertion of SO2 has been examined in particular detail. SO2 ... With transition metal alkyls, these oxides behave as electrophiles and insert into the bond between metals and their relatively ... ISBN 978-0-471-62978-8. Puddephatt, R.A.; Stalteri, M.A. (1980). "Competition between Insertion of Sulfur Dioxide into the ...
Higher sulfur oxides - Wikipedia
ISBN 978-0-08-037941-8. v t e (Sulfur oxides, Sulfur(VI) compounds, Non-stoichiometric compounds, Interchalcogens, All stub ... Higher sulfur oxides are a group of chemical compounds with the formula SO3+x where x lies between 0 and 1. They contain peroxo ... The structure of the polymers is based on β-SO3 (one of the three forms of solid SO3) with oxide bridges (−O−) replaced ... O−O) groups, and the oxidation state of sulfur is +6 as in SO3. Monomeric SO4 can be isolated at low temperatures (below 78 K) ...
Emission trends of sulphur oxides
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European Environment Agency
Emission trends of sulphur oxides This website has limited functionality with javascript off. Please make sure javascript is ... 20 Dec 2012 - Emission trends of sulphur oxides (EEA member countries, EU-27 Member States) ... 21 Dec 2011 - Emission trends of sulphur oxides (EEA member countries, EU-27 Member States) ... www.eea.europa.eu/data-and-maps/daviz/emission-trends-of-sulphur-oxides or scan the QR code. ...
9VAC5-40-2420. Standard for sulfur oxides.
Y = allowable sulfur oxide emissions in lb/hr. Note: This provision in effect requires removal of about 90% of the input-sulfur ... Standard for sulfur oxides.. No owner or other person shall cause or permit to be discharged into the atmosphere from any ... X = total sulfur fed to the smelter in lb/hr. ... primary metal operation any sulfur oxide emissions in excess of ...
Sulfur oxides - Sulfur dioxide and Sulfur trioxide - Windows to the Universe
Sulfur oxides - Sulfur dioxide (SO2) and Sulfur trioxide (SO3). Here are four different ways chemists use to show a molecule of ... Some of the sulfur oxides in the air come from nature. For example, some of it comes from volcanoes. Some of the sulfur oxides ... Sulfur dioxide pollutes the air. It is bad for your lungs and makes it hard to breath. Sulfur oxides also help make acid rain. ... Sulfur dioxide (SO2) and sulfur trioxide (SO3) are two kinds of chemicals. They both have sulfur and oxygen atoms in them. They ...
Graphene oxide-sulfur (GO-S) nanocomposite cathodes for high-capacity, stable cycling lithium sulfur batteries - Green Car...
... have synthesized graphene oxide-sulfur (GO-S) nanocomposite cathodes and applied them in lithium/sulfur cells to show a high ... Graphene oxide-sulfur (GO-S) nanocomposite cathodes for high-capacity, stable cycling lithium sulfur batteries 02 November 2011 ... Graphene Oxide as a Sulfur Immobilizer in High Performance Lithium/Sulfur Cells. Journal of the American Chemical Society DOI: ... have synthesized graphene oxide-sulfur (GO-S) nanocomposite cathodes and applied them in lithium/sulfur cells to show a high ...
Abstract: Transient Kinetic Study of Sulfur Oxide Adsorption/Desorption over Al2O3 and Pt/Al2O3 Catalysts (2014 Annual Meeting)
Sulfur oxides in the engine exhaust interact with diesel aftertreatment catalysts and deactivate them. SO2 is the main sulfur ... The adsorbed amount of sulfur oxides significantly increased, to 1.50×10-3 mol, when exposed to SO3 instead, suggesting a ... In the present work, in order to study the activity recovery of a Pt/Al2O3 DOC after sulfur poisoning, sulfur storage/release ... 390165 Transient Kinetic Study of Sulfur Oxide Adsorption/Desorption over Al2O3 and Pt/Al2O3 Catalysts ...
Modelling of temporal and spatial evolution of sulphur oxides and sulphuric acid under large, two-stroke marine engine-like...
Three-dimensional nitrogen and sulfur co-doped holey-reduced graphene oxide frameworks anchored with MoO2 nanodots for advanced...
Three-dimensional nitrogen and sulfur co-doped holey-reduced graphene oxide frameworks anchored with MoO2 nanodots for advanced ... sulfur (S) co-doped reduced graphene oxide (GO) (3D MoO2/NP-NSG) through hydrothermal, lyophilization and thermal treatment. ... Three-dimensional nitrogen and sulfur co-doped holey-reduced graphene oxide frameworks anchored with MoO2 nanodots for advanced ... First, the NP-NSG is formed via hydrothermal treatment using graphene oxide, hydrogen peroxide (H2O2), and thiourea as the co- ...
Segregation of nickel/iron bimetallic particles from lanthanum doped strontium titanates to improve sulfur stability of solid...
... improving Ni catalyst stability towards sulfur poisoning by H2S is highly critical in solid oxide fuel cells. In this work Mn, ... The addition of Fe to the Ni perovskite catalyst was found to increase sulfur tolerance. The simultaneous segregation of Fe and ... of nickel/iron bimetallic particles from lanthanum doped strontium titanates to improve sulfur stability of solid oxide fuel ... of nickel/iron bimetallic particles from lanthanum doped strontium titanates to improve sulfur stability of solid oxide fuel ...
Book Atmospheric Sulfur And Nitrogen Oxides. Eastern North American Source Receptor Relationships
Eastern create to device or opportunity? This popular book Atmospheric Sulfur and Nitrogen Oxides. Eastern North American ... How fits book Atmospheric Sulfur and Nitrogen Oxides. ... book Atmospheric Sulfur and Nitrogen Oxides. of Health ... Am book Atmospheric Sulfur and Nitrogen Oxides. Eastern was the Mama Mirage. give book Atmospheric Sulfur and Nitrogen Oxides. ... book Atmospheric Sulfur and Nitrogen Oxides.: tuition of the discount. book Atmospheric Sulfur and Nitrogen Oxides. Eastern ...
Marine Sulphur Oxides (SOx) emissions - Website of marpol-annex-vi!
Sulphur oxides (SOx) - Regulation 14. SOx and particulate matter emission controls apply to all fuel oil, as defined in ... These fuel oil sulphur limits (expressed in terms of % m/m - that is by weight) are subject to a series of step changes over ... The first level of control in this respect is therefore on the actual sulphur content of the fuel oils as bunkered. This value ... higher sulphur content fuel oils, so that the fuel oil as actually used within an ECA exceeds the applicable limit.. ...
Solubility of sulfur in the solid oxides of CaO-Al <sub>2</sub> O ...
Gao X, Baba Y, Nishimoto M, Ueda S, Shinya K. Solubility of sulfur in the solid oxides of CaO-Al 2 O 3 system In ICS 2018 - 7th ... Gao, X, Baba, Y, Nishimoto, M, Ueda, S & Shinya, K 2018, Solubility of sulfur in the solid oxides of CaO-Al 2 O 3 system in ICS ... Solubility of sulfur in the solid oxides of CaO-Al 2 O 3 system . / Gao, Xu; Baba, Yosuke; Nishimoto, Masashi et al. ICS 2018 ... Gao, X., Baba, Y., Nishimoto, M., Ueda, S., & Shinya, K. (2018). Solubility of sulfur in the solid oxides of CaO-Al 2 O 3 ...
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Medical Gases - Medical Gases Manufacturers & Suppliers
CDC - NIOSH Pocket Guide to Chemical Hazards - Index of Chemical Names : S
Nitrous Oxide Increases Intraocular Pressure after Intravitreal Sulfur Hexafluoride Injection | Anesthesiology | American...
Nitrous Oxide Increases Intraocular Pressure after Intravitreal Sulfur Hexafluoride Injection Gerald L. Wolf, M.D.; Gerald L. ... Gerald L. Wolf, Christine Capuano, John Hartung; Nitrous Oxide Increases Intraocular Pressure after Intravitreal Sulfur ... Visual Loss after Use of Nitrous Oxide Gas with General Anesthetic in Patients with Intraocular Gas Still Persistent Up to 30 ... Permanent Postoperative Vision Loss Associated with Expansion of Intraocular Gas in the Presence of a Nitrous Oxide-Containing ...
Metal oxide and sulfide materials used as support for sulfur-based cathode materials - cornerstoneautocare.com
Please read the articles in the Metal oxide and sulfide materials used as support for sulfur-based cathode materials to better ... Metal oxide and sulfide materials used as support for sulfur-based cathode materials. 2 years ago admin ... These sulfur-containing groups can be adsorbed on the surface of metal oxides and reduced to Li2S in the subsequent ... Therefore, metal oxides have gradually begun to be used as supports for sulfur-based composite materials and have shown ...
Sustainable Marine Fuels | Department of Energy
Determination of Magnesium Oxide Content in Petroleum Sulfur Tolerant Shift Catalyst - Magnesia Supplier | Magnesium Oxide...
Determination of Magnesium Oxide Content in Petroleum Sulfur Tolerant Shift Catalyst. Leave a Comment / By messibiology@gmail. ... Magnesium oxide (MgO) is one of the important components of catalysts, and accurate determination of the true content of ... hydrogen peroxide and titanium dioxide to mask interfering elements to determine the content of magnesium oxide in the sulfur- ... This kind of catalyst generally adds magnesium oxide and some other additives to the carrier, or adopts some special ...
Principles of Pediatric Environmental Health: What Are Special Considerations Regarding Toxic Exposures to Young and School-age...
The EPA National Library Catalog | EPA National Library Network | US EPA
ACP - Sulfate-nitrate-ammonium aerosols over China: response to 2000-2015 emission changes of sulfur dioxide, nitrogen oxides,...
Multi-scale modeling study of the source contributions to near-surface ozone and sulfur oxides levels over California during...
Chronic high surface ozone (O3 ) levels and the increasing sulfur oxides (SOx = SO2 +SO4 ) ambient concentrations over South ... Multi-scale modeling study of the source contributions to near-surface ozone and sulfur oxides levels over California during ... of local emission sourcesto SC O3 and to evaluate the impacts of transported sulfur and local emissions on the SC sulfur ...
Liquefied natural gas - Wikipedia
"IMO 2020 - cutting sulphur oxide emissions". www.imo.org. Retrieved 2021-07-05. "BHP weighing LNG power for iron ore ships". ... Replacement of high sulphur bunker fuel with sulphur-free LNG is required on a major scale in the marine transport sector, as ... The most important gas quality concerns involve the sulphur and mercury content and the calorific value. Due to the sensitivity ... total sulphur, CO2 and Hg content; 2 - to guard against the formation of liquids or hydrates in the networks, through maximum ...
Do Mexicans care about air pollution? | Latin American Economic Review
This inventory measures the emissions by states and municipalities for NO x (Nitrogen Oxide), SO x (Sulfur Oxide), COV ( ... nitrogen oxide, carbon monoxide, fine particulate matter and organic compounds like benzene. Some compounds like nitrogen ... the result of industrial and automobile emissions that affect the air quality and these emissions cause higher levels of sulfur ...
Electro-determination of Chromium Ions based on Carbon Paste Electrode Decorated with Highly Nitrogen-Sulfur-Doped Graphene...
This research has successfully created a carbon paste electrode that has been modified with nitrogen-sulfur-doped graphene ... oxide, allowing for the accurate detection of chromium ions in aqueous solutions. The surface morphology of the modifier was ... of Chromium Ions based on Carbon Paste Electrode Decorated with Highly Nitrogen-Sulfur-Doped Graphene Oxide. ... of Chromium Ions based on Carbon Paste Electrode Decorated with Highly Nitrogen-Sulfur-Doped Graphene Oxide. Analytical and ...
The Oil Drum | Empire On the Edge--Betting On LNG **
Ditto for sulfur and nitrogen oxides. And someday for CO2 and mercury. ... You wont get nitrogen oxide. If makeing NO is that easy you can simply ignite the fresh air and bingo you are in the business ... nitrogen present during combustion does not automatically mean that you will be generating large amounts of nitrogen oxides ( ...
Governing Board Meeting Agenda: March 4, 2022
Iron-sulfur glutaredoxin 2 protects oligodendrocytes against damage induced by nitric oxide release from activated microglia<...
Iron-sulfur glutaredoxin 2 protects oligodendrocytes against damage induced by nitric oxide release from activated microglia. ... Iron-sulfur glutaredoxin 2 protects oligodendrocytes against damage induced by nitric oxide release from activated microglia. ... Iron-sulfur glutaredoxin 2 protects oligodendrocytes against damage induced by nitric oxide release from activated microglia. ... Iron-sulfur glutaredoxin 2 protects oligodendrocytes against damage induced by nitric oxide release from activated microglia. ...