Carbon monoxide (CO). A poisonous colorless, odorless, tasteless gas. It combines with hemoglobin to form carboxyhemoglobin, which has no oxygen carrying capacity. The resultant oxygen deprivation causes headache, dizziness, decreased pulse and respiratory rates, unconsciousness, and death. (From Merck Index, 11th ed)
Toxic asphyxiation due to the displacement of oxygen from oxyhemoglobin by carbon monoxide.
A nonmetallic element with atomic symbol C, atomic number 6, and atomic weight [12.0096; 12.0116]. It may occur as several different allotropes including DIAMOND; CHARCOAL; and GRAPHITE; and as SOOT from incompletely burned fuel.
A colorless, odorless gas that can be formed by the body and is necessary for the respiration cycle of plants and animals.
The amount of a gas taken up, by the pulmonary capillary blood from the alveolar gas, per minute per unit of average pressure of the gradient of the gas across the BLOOD-AIR BARRIER.
A mixed function oxidase enzyme which during hemoglobin catabolism catalyzes the degradation of heme to ferrous iron, carbon monoxide and biliverdin in the presence of molecular oxygen and reduced NADPH. The enzyme is induced by metals, particularly cobalt. EC 1.14.99.3.
A ubiquitous stress-responsive enzyme that catalyzes the oxidative cleavage of HEME to yield IRON; CARBON MONOXIDE; and BILIVERDIN.
Oxidoreductases that are specific for ALDEHYDES.
Nanometer-sized tubes composed mainly of CARBON. Such nanotubes are used as probes for high-resolution structural and chemical imaging of biomolecules with ATOMIC FORCE MICROSCOPY.
Porphyrins with four methyl and two propionic acid side chains attached to the pyrrole rings.
Viscous materials composed of complex, high-molecular-weight compounds derived from the distillation of petroleum or the destructive distillation of wood or coal. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Porphyrins with four methyl, two vinyl, and two propionic acid side chains attached to the pyrrole rings. Protoporphyrin IX occurs in hemoglobin, myoglobin, and most of the cytochromes.
The color-furnishing portion of hemoglobin. It is found free in tissues and as the prosthetic group in many hemeproteins.
The therapeutic intermittent administration of oxygen in a chamber at greater than sea-level atmospheric pressures (three atmospheres). It is considered effective treatment for air and gas embolisms, smoke inhalation, acute carbon monoxide poisoning, caisson disease, clostridial gangrene, etc. (From Segen, Dictionary of Modern Medicine, 1992). The list of treatment modalities includes stroke.
Chemical bond cleavage reactions resulting from absorption of radiant energy.
Any substance in the air which could, if present in high enough concentration, harm humans, animals, vegetation or material. Substances include GASES; PARTICULATE MATTER; and volatile ORGANIC CHEMICALS.
Any tests done on exhaled air.
Porphyrins with four methyl, two ethyl, and two propionic acid side chains attached to the pyrrole rings.
An element with atomic symbol O, atomic number 8, and atomic weight [15.99903; 15.99977]. It is the most abundant element on earth and essential for respiration.
Stable carbon atoms that have the same atomic number as the element carbon, but differ in atomic weight. C-13 is a stable carbon isotope.
The oxygen-carrying proteins of ERYTHROCYTES. They are found in all vertebrates and some invertebrates. The number of globin subunits in the hemoglobin quaternary structure differs between species. Structures range from monomeric to a variety of multimeric arrangements.
Measurement of the various processes involved in the act of respiration: inspiration, expiration, oxygen and carbon dioxide exchange, lung volume and compliance, etc.
A conjugated protein which is the oxygen-transporting pigment of muscle. It is made up of one globin polypeptide chain and one heme group.
Systems of enzymes which function sequentially by catalyzing consecutive reactions linked by common metabolic intermediates. They may involve simply a transfer of water molecules or hydrogen atoms and may be associated with large supramolecular structures such as MITOCHONDRIA or RIBOSOMES.
Chloro(7,12-diethenyl-3,8,13,17-tetramethyl-21H,23H-porphine-2,18-dipropanoato(4-)-N(21),N(22),N(23),N(24)) ferrate(2-) dihydrogen.
A chemical reaction in which an electron is transferred from one molecule to another. The electron-donating molecule is the reducing agent or reductant; the electron-accepting molecule is the oxidizing agent or oxidant. Reducing and oxidizing agents function as conjugate reductant-oxidant pairs or redox pairs (Lehninger, Principles of Biochemistry, 1982, p471).
The art or process of comparing photometrically the relative intensities of the light in different parts of the spectrum.
Proteins that contain an iron-porphyrin, or heme, prosthetic group resembling that of hemoglobin. (From Lehninger, Principles of Biochemistry, 1982, p480)
Nitrogen oxide (NO2). A highly poisonous gas. Exposure produces inflammation of lungs that may only cause slight pain or pass unnoticed, but resulting edema several days later may cause death. (From Merck, 11th ed) It is a major atmospheric pollutant that is able to absorb UV light that does not reach the earth's surface.
Inorganic salts of HYDROGEN CYANIDE containing the -CN radical. The concept also includes isocyanides. It is distinguished from NITRILES, which denotes organic compounds containing the -CN radical.
The vapor state of matter; nonelastic fluids in which the molecules are in free movement and their mean positions far apart. Gases tend to expand indefinitely, to diffuse and mix readily with other gases, to have definite relations of volume, temperature, and pressure, and to condense or liquefy at low temperatures or under sufficient pressure. (Grant & Hackh's Chemical Dictionary, 5th ed)
A class of compounds of the type R-M, where a C atom is joined directly to any other element except H, C, N, O, F, Cl, Br, I, or At. (Grant & Hackh's Chemical Dictionary, 5th ed)
Either of the pair of organs occupying the cavity of the thorax that effect the aeration of the blood.
The exchange of OXYGEN and CARBON DIOXIDE between alveolar air and pulmonary capillary blood that occurs across the BLOOD-AIR BARRIER.
A highly toxic, colorless, nonflammable gas. It is used as a pharmaceutical aid and antioxidant. It is also an environmental air pollutant.
A free radical gas produced endogenously by a variety of mammalian cells, synthesized from ARGININE by NITRIC OXIDE SYNTHASE. Nitric oxide is one of the ENDOTHELIUM-DEPENDENT RELAXING FACTORS released by the vascular endothelium and mediates VASODILATION. It also inhibits platelet aggregation, induces disaggregation of aggregated platelets, and inhibits platelet adhesion to the vascular endothelium. Nitric oxide activates cytosolic GUANYLATE CYCLASE and thus elevates intracellular levels of CYCLIC GMP.
The rate dynamics in chemical or physical systems.
A compound formed by the combination of hemoglobin and oxygen. It is a complex in which the oxygen is bound directly to the iron without causing a change from the ferrous to the ferric state.
Inhaling and exhaling the smoke of burning TOBACCO.
A solvent for oils, fats, lacquers, varnishes, rubber waxes, and resins, and a starting material in the manufacturing of organic compounds. Poisoning by inhalation, ingestion or skin absorption is possible and may be fatal. (Merck Index, 11th ed)
Gases, fumes, vapors, and odors escaping from the cylinders of a gasoline or diesel internal-combustion engine. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed & Random House Unabridged Dictionary, 2d ed)
A phylum of ARCHAEA comprising at least seven classes: Methanobacteria, Methanococci, Halobacteria (extreme halophiles), Archaeoglobi (sulfate-reducing species), Methanopyri, and the thermophiles: Thermoplasmata, and Thermococci.
Nicotine is highly toxic alkaloid. It is the prototypical agonist at nicotinic cholinergic receptors where it dramatically stimulates neurons and ultimately blocks synaptic transmission. Nicotine is also important medically because of its presence in tobacco smoke.
The first chemical element in the periodic table. It has the atomic symbol H, atomic number 1, and atomic weight [1.00784; 1.00811]. It exists, under normal conditions, as a colorless, odorless, tasteless, diatomic gas. Hydrogen ions are PROTONS. Besides the common H1 isotope, hydrogen exists as the stable isotope DEUTERIUM and the unstable, radioactive isotope TRITIUM.
A trace element with the atomic symbol Ni, atomic number 28, and atomic weight 58.69. It is a cofactor of the enzyme UREASE.
An enzyme found in bacteria. It catalyzes the reduction of FERREDOXIN and other substances in the presence of molecular hydrogen and is involved in the electron transport of bacterial photosynthesis.
Any of several processes for the permanent or long-term artificial or natural capture or removal and storage of carbon dioxide and other forms of carbon, through biological, chemical or physical processes, in a manner that prevents it from being released into the atmosphere.
Supplying a building or house, their rooms and corridors, with fresh air. The controlling of the environment thus may be in public or domestic sites and in medical or non-medical locales. (From Dorland, 28th ed)
The collective name for the boron hydrides, which are analogous to the alkanes and silanes. Numerous boranes are known. Some have high calorific values and are used in high-energy fuels. (From Grant & Hackh's Chemical Dictionary, 5th ed)
The volume of air that is exhaled by a maximal expiration following a maximal inspiration.
The administration of drugs by the respiratory route. It includes insufflation into the respiratory tract.
The presence of contaminants or pollutant substances in the air (AIR POLLUTANTS) that interfere with human health or welfare, or produce other harmful environmental effects. The substances may include GASES; PARTICULATE MATTER; or volatile ORGANIC CHEMICALS.
1,3,6,7-Tetramethyl-4,5-dicarboxyethyl-2,8-divinylbilenone. Biosynthesized from hemoglobin as a precursor of bilirubin. Occurs in the bile of AMPHIBIANS and of birds, but not in normal human bile or serum.
A colorless, flammable, poisonous liquid, CS2. It is used as a solvent, and is a counterirritant and has local anesthetic properties but is not used as such. It is highly toxic with pronounced CNS, hematologic, and dermatologic effects.
The volume of air contained in the lungs at the end of a maximal inspiration. It is the equivalent to each of the following sums: VITAL CAPACITY plus RESIDUAL VOLUME; INSPIRATORY CAPACITY plus FUNCTIONAL RESIDUAL CAPACITY; TIDAL VOLUME plus INSPIRATORY RESERVE VOLUME plus functional residual capacity; or tidal volume plus inspiratory reserve volume plus EXPIRATORY RESERVE VOLUME plus residual volume.
A flammable, poisonous gas with a characteristic odor of rotten eggs. It is used in the manufacture of chemicals, in metallurgy, and as an analytical reagent. (From Merck Index, 11th ed)
A hemoglobin-like oxygen-binding hemeprotein present in the nitrogen-fixing root nodules of leguminous plants. The red pigment has a molecular weight approximately 1/4 that of hemoglobin and has been suggested to act as an oxido-reduction catalyst in symbiotic nitrogen fixation.
A genus of motile or nonmotile gram-positive bacteria of the family Clostridiaceae. Many species have been identified with some being pathogenic. They occur in water, soil, and in the intestinal tract of humans and lower animals.
Porphyrins which are combined with a metal ion. The metal is bound equally to all four nitrogen atoms of the pyrrole rings. They possess characteristic absorption spectra which can be utilized for identification or quantitative estimation of porphyrins and porphyrin-bound compounds.
The simplest saturated hydrocarbon. It is a colorless, flammable gas, slightly soluble in water. It is one of the chief constituents of natural gas and is formed in the decomposition of organic matter. (Grant & Hackh's Chemical Dictionary, 5th ed)
The exposure to potentially harmful chemical, physical, or biological agents in the environment or to environmental factors that may include ionizing radiation, pathogenic organisms, or toxic chemicals.
The contamination of indoor air.
An enzyme that catalyzes the conversion of GTP to 3',5'-cyclic GMP and pyrophosphate. It also acts on ITP and dGTP. (From Enzyme Nomenclature, 1992) EC 4.6.1.2.
A bile pigment that is a degradation product of HEME.
Particles of any solid substance, generally under 30 microns in size, often noted as PM30. There is special concern with PM1 which can get down to PULMONARY ALVEOLI and induce MACROPHAGE ACTIVATION and PHAGOCYTOSIS leading to FOREIGN BODY REACTION and LUNG DISEASES.
Pulmonary injury following the breathing in of toxic smoke from burning materials such as plastics, synthetics, building materials, etc. This injury is the most frequent cause of death in burn patients.
Discontinuation of the habit of smoking, the inhaling and exhaling of tobacco smoke.
Measurement of the amount of air that the lungs may contain at various points in the respiratory cycle.
Elements of limited time intervals, contributing to particular results or situations.
Acetyl CoA participates in the biosynthesis of fatty acids and sterols, in the oxidation of fatty acids and in the metabolism of many amino acids. It also acts as a biological acetylating agent.
The N-glucuronide conjugate of cotinine is a major urinary metabolite of NICOTINE. It thus serves as a biomarker of exposure to tobacco SMOKING. It has CNS stimulating properties.
Vibrio- to spiral-shaped phototrophic bacteria found in stagnant water and mud exposed to light.
Normal adult human hemoglobin. The globin moiety consists of two alpha and two beta chains.
A metallic element with atomic symbol Fe, atomic number 26, and atomic weight 55.85. It is an essential constituent of HEMOGLOBINS; CYTOCHROMES; and IRON-BINDING PROTEINS. It plays a role in cellular redox reactions and in the transport of OXYGEN.
Derivatives of ACETIC ACID. Included under this heading are a broad variety of acid forms, salts, esters, and amides that contain the carboxymethane structure.
The monitoring of the level of toxins, chemical pollutants, microbial contaminants, or other harmful substances in the environment (soil, air, and water), workplace, or in the bodies of people and animals present in that environment.
A product of hard secondary xylem composed of CELLULOSE, hemicellulose, and LIGNANS, that is under the bark of trees and shrubs. It is used in construction and as a source of CHARCOAL and many other products.
An amorphous form of carbon prepared from the incomplete combustion of animal or vegetable matter, e.g., wood. The activated form of charcoal is used in the treatment of poisoning. (Grant & Hackh's Chemical Dictionary, 5th ed)
Spectrophotometry in the infrared region, usually for the purpose of chemical analysis through measurement of absorption spectra associated with rotational and vibrational energy levels of molecules. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
The unstable triatomic form of oxygen, O3. It is a powerful oxidant that is produced for various chemical and industrial uses. Its production is also catalyzed in the ATMOSPHERE by ULTRAVIOLET RAY irradiation of oxygen or other ozone precursors such as VOLATILE ORGANIC COMPOUNDS and NITROGEN OXIDES. About 90% of the ozone in the atmosphere exists in the stratosphere (STRATOSPHERIC OZONE).
The exposure to potentially harmful chemical, physical, or biological agents by inhaling them.
Inorganic compounds that contain barium as an integral part of the molecule.
Enlargement of air spaces distal to the TERMINAL BRONCHIOLES where gas-exchange normally takes place. This is usually due to destruction of the alveolar wall. Pulmonary emphysema can be classified by the location and distribution of the lesions.
An element with the atomic symbol N, atomic number 7, and atomic weight [14.00643; 14.00728]. Nitrogen exists as a diatomic gas and makes up about 78% of the earth's atmosphere by volume. It is a constituent of proteins and nucleic acids and found in all living cells.
A technique applicable to the wide variety of substances which exhibit paramagnetism because of the magnetic moments of unpaired electrons. The spectra are useful for detection and identification, for determination of electron structure, for study of interactions between molecules, and for measurement of nuclear spins and moments. (From McGraw-Hill Encyclopedia of Science and Technology, 7th edition) Electron nuclear double resonance (ENDOR) spectroscopy is a variant of the technique which can give enhanced resolution. Electron spin resonance analysis can now be used in vivo, including imaging applications such as MAGNETIC RESONANCE IMAGING.
The application of heat to raise the temperature of the environment, ambient or local, or the systems for accomplishing this effect. It is distinguished from HEAT, the physical property and principle of physics.
Drugs that are chemically similar to naturally occurring metabolites, but differ enough to interfere with normal metabolic pathways. (From AMA Drug Evaluations Annual, 1994, p2033)
Volative flammable fuel (liquid hydrocarbons) derived from crude petroleum by processes such as distillation reforming, polymerization, etc.
A superfamily of hundreds of closely related HEMEPROTEINS found throughout the phylogenetic spectrum, from animals, plants, fungi, to bacteria. They include numerous complex monooxygenases (MIXED FUNCTION OXYGENASES). In animals, these P-450 enzymes serve two major functions: (1) biosynthesis of steroids, fatty acids, and bile acids; (2) metabolism of endogenous and a wide variety of exogenous substrates, such as toxins and drugs (BIOTRANSFORMATION). They are classified, according to their sequence similarities rather than functions, into CYP gene families (>40% homology) and subfamilies (>59% homology). For example, enzymes from the CYP1, CYP2, and CYP3 gene families are responsible for most drug metabolism.
Salts or ions of the theoretical carbonic acid, containing the radical CO2(3-). Carbonates are readily decomposed by acids. The carbonates of the alkali metals are water-soluble; all others are insoluble. (From Grant & Hackh's Chemical Dictionary, 5th ed)
The normality of a solution with respect to HYDROGEN ions; H+. It is related to acidity measurements in most cases by pH = log 1/2[1/(H+)], where (H+) is the hydrogen ion concentration in gram equivalents per liter of solution. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
An enzyme that catalyzes the formation of CoA derivatives from ATP, acetate, and CoA to form AMP, pyrophosphate, and acetyl CoA. It acts also on propionates and acrylates. EC 6.2.1.1.
Pathological processes involving any part of the LUNG.
The act of BREATHING out.
Any combustible hydrocarbon deposit formed from the remains of prehistoric organisms. Examples are petroleum, coal, and natural gas.
Large marine mammals of the order CETACEA. In the past, they were commercially valued for whale oil, for their flesh as human food and in ANIMAL FEED and FERTILIZERS, and for baleen. Today, there is a moratorium on most commercial whaling, as all species are either listed as endangered or threatened.
Measure of the maximum amount of air that can be expelled in a given number of seconds during a FORCED VITAL CAPACITY determination . It is usually given as FEV followed by a subscript indicating the number of seconds over which the measurement is made, although it is sometimes given as a percentage of forced vital capacity.
A genus of gram-negative, aerobic, rod-shaped bacteria widely distributed in nature. Some species are pathogenic for humans, animals, and plants.
A group of methane-based halogenated hydrocarbons containing one or more fluorine and chlorine atoms.
A family of bacteria found in the mouth and intestinal and respiratory tracts of man and other animals as well as in the human female urogenital tract. Its organisms are also found in soil and on cereal grains.
Dithionite. The dithionous acid ion and its salts.

Internal electron transfer between hemes and Cu(II) bound at cysteine beta93 promotes methemoglobin reduction by carbon monoxide. (1/2768)

Previous studies showed that CO/H2O oxidation provides electrons to drive the reduction of oxidized hemoglobin (metHb). We report here that Cu(II) addition accelerates the rate of metHb beta chain reduction by CO by a factor of about 1000. A mechanism whereby electron transfer occurs via an internal pathway coupling CO/H2O oxidation to Fe(III) and Cu(II) reduction is suggested by the observation that the copper-induced rate enhancement is inhibited by blocking Cys-beta93 with N-ethylmaleimide. Furthermore, this internal electron-transfer pathway is more readily established at low Cu(II) concentrations in Hb Deer Lodge (beta2His --> Arg) and other species lacking His-beta2 than in Hb A0. This difference is consistent with preferential binding of Cu(II) in Hb A0 to a high affinity site involving His-beta2, which is ineffective in promoting electron exchange between Cu(II) and the beta heme iron. Effective electron transfer is thus affected by Hb type but is not governed by the R left arrow over right arrow T conformational equilibrium. The beta hemes in Cu(II)-metHb are reduced under CO at rates close to those observed for cytochrome c oxidase, where heme and copper are present together in the oxygen-binding site and where internal electron transfer also occurs.  (+info)

Subunit dissociation in fish hemoglobins. (2/2768)

The tetramer-dimer dissociation equilibria (K 4,2) of several fish hemoglobins have been examined by sedimentation velocity measurements with a scanner-computer system for the ultracentrifuge and by flash photolysis measurements using rapid kinetic methods. Samples studied in detail included hemoglobins from a marine teleost, Brevoortia tyrannus (common name, menhaden); a fresh water teleost, Cyprinus carpio, (common name, carp); and an elasmobranch Prionace glauca (common name, blue shark). For all three species in the CO form at pH 7, in 0.1 M phosphate buffer, sedimentation coefficients of 4.3 S (typical of tetrameric hemoglobin) are observed in the micromolar concentration range. In contrast, mammalian hemoglobins dissociate appreciably to dimers under these conditions. The inability to detect dissociation in three fish hemoglobins at the lowest concentrations examined indicates that K 4,2 must have a value of 10(-8) M or less. In flash photolysis experiments on very dilute solutions in long path length cells, two kinetic components were detected with their proportions varying as expected for an equilibrium between tetramers (the slower component) and dimers (the faster component); values of K 4,2 for the three fish hemoglobins in the range 10(-9) to 10(-8) M were calculated from these data. Thus, the values of K 4,2 for liganded forms of the fish hemoglobins appear to be midway between the value for liganded human hemoglobin (K 4,2 approximately 10(-6) M) and unliganded human hemoglobin (K 4,2 approximately 10(-12) M). This conclusion is supported by measurements on solutions containing guanidine hydrochloride to enhance the degree of dissociation. All three fish hemoglobins are appreciably dissociated at guanidine concentrations of about 0.8 M, which is roughly midway between the guanidine concentrations needed to cause comparable dissociation of liganded human hemoglobin (about 0.4 M) and unliganded human hemoglobin (about 1.6 M). Kinetic measurements on solutions containing guanidine hydrochloride indicated that there are changes in both the absolute rates and the proportions of the fast and slow components, which along with other factors complicated the analysis of the data in terms of dissociation constants. Measurements were also made in solutions containing urea to promote dissociation, but with this agent very high concentrations (about 6 M) were required to give measureable dissociation and the fish hemoglobins were unstable under these conditions, with appreciable loss of absorbance spectra in both the sedimentation and kinetic experiments.  (+info)

Reactivity of cyanate with valine-1 (alpha) of hemoglobin. A probe of conformational change and anion binding. (3/2768)

The 3-fold increase in the carbamylation rate of Val-1 (alpha) of hemoglobin upon deoxygenation described earlier is now shown to be a sensitive probe of conformational change. Thus, whereas this residue in methemoglobin A is carbamylated at the same rate as in liganded hemoglobin, upon addition of inositol hexaphosphate its carbamylation rate is enhanced 30% as much as the total change in the rate between the CO and deoxy states. For CO-hemoglobin Kansas in the presence of the organic phosphate, the relative increase in the carbamylation rate of this residue is about 50%. These results indicate that methemoglobin A and hemoglobin Kansas in the presence of inositol hexaphosphate do not assume a conformation identical with deoxyhemoglobin but rather form either a mixture of R and T states or an intermediate conformation in the region around Val-1 (alpha). Studies on the mechanism for the rate enhancement in deoxyhemoglobin suggest that the cyanate anion binds to groups in the vicinity of Val-1 (alpha) prior to proton transfer and carbamylation of this NH2-terminal residue. Thus, specific removal with carboxypeptidase B of Arg-141 (alpha), which is close to Val-1 (alpha) in deoxyhemoglobin, abolishes the enhancement in carbamylation. Chloride, which has the same valency as cyanate, is a better competitive inhibitor of the carbamylation of deoxyhemoglobin (Ki = 50 mM) compared with liganded hemoglobin. Nitrate and iodide are also effective inhibitors of the carbamylation of Val-1 (alpha) of deoxyhemoglobin (Ki = 35 mM); inorganic phosphate, sulfate, and fluoride are poor competitive inhibitors. The change in pKa of Val-1 (alpha) upon deoxygenation may be due to its differential interaction with chloride.  (+info)

Condensation of carbon in radioactive supernova gas. (4/2768)

Chemistry resulting in the formation of large carbon-bearing molecules and dust in the interior of an expanding supernova was explored, and the equations governing their abundances were solved numerically. Carbon dust condenses from initially gaseous carbon and oxygen atoms because energetic electrons produced by radioactivity in the supernova cause dissociation of the carbon monoxide molecules, which would otherwise form and limit the supply of carbon atoms. The resulting free carbon atoms enable carbon dust to grow faster by carbon association than the rate at which the dust can be destroyed by oxidation. The origin of presolar micrometer-sized carbon solids that are found in meteorites is thereby altered.  (+info)

Structural dynamics of ligand diffusion in the protein matrix: A study on a new myoglobin mutant Y(B10) Q(E7) R(E10). (5/2768)

A triple mutant of sperm whale myoglobin (Mb) [Leu(B10) --> Tyr, His(E7) --> Gln, and Thr(E10) --> Arg, called Mb-YQR], investigated by stopped-flow, laser photolysis, crystallography, and molecular dynamics (MD) simulations, proved to be quite unusual. Rebinding of photodissociated NO, O2, and CO from within the protein (in a "geminate" mode) allows us to reach general conclusions about dynamics and cavities in proteins. The 3D structure of oxy Mb-YQR shows that bound O2 makes two H-bonds with Tyr(B10)29 and Gln(E7)64; on deoxygenation, these two residues move toward the space occupied by O2. The bimolecular rate constant for NO binding is the same as for wild-type, but those for CO and O2 binding are reduced 10-fold. While there is no geminate recombination with O2 and CO, geminate rebinding of NO displays an unusually large and very slow component, which is pretty much abolished in the presence of xenon. These results and MD simulations suggest that the ligand migrates in the protein matrix to a major "secondary site," located beneath Tyr(B10)29 and accessible via the motion of Ile(G8)107; this site is different from the "primary site" identified by others who investigated the photolyzed state of wild-type Mb by crystallography. Our hypothesis may rationalize the O2 binding properties of Mb-YQR, and more generally to propose a mechanism of control of ligand binding and dissociation in hemeproteins based on the dynamics of side chains that may (or may not) allow access to and direct temporary sequestration of the dissociated ligand in a docking site within the protein. This interpretation suggests that very fast (picosecond) fluctuations of amino acid side chains may play a crucial role in controlling O2 delivery to tissue at a rate compatible with physiology.  (+info)

Heterotropic effectors exert more significant strain on monoligated than on unligated hemoglobin. (6/2768)

The effect of allosteric effectors, such as inositol hexakisphosphate and/or bezafibrate, has been investigated on the unliganded human adult hemoglobin both spectroscopically (employing electronic absorption, circular dichroism, resonance Raman, and x-ray absorption near-edge spectroscopies) and functionally (following the kinetics of the first CO binding step up to a final 4% ligand saturation degree). All data indicate that the unliganded T-state is not perturbed by the interaction with either one or both effectors, suggesting that their functional influence is only exerted when a ligand molecule is bound to the heme. This is confirmed by the observation that CO dissociation from partially liganded hemoglobin ( +info)

Evaluation of passive smoking by measuring urinary trans, trans-muconic acid and exhaled carbon monoxide levels. (7/2768)

No method has yet been established to evaluate the exposure to tobacco smoke in passive smoking (PS). We therefore conducted a study on the possibility that the levels of urinary trans, trans-muconic acid (MA) and the exhaled carbon monoxide (CO) could be indices of the passive exposure to tobacco smoke. The moderate correlation was observed between urinary MA levels and the number of consumed cigarettes per day in smokers. The mean urinary MA level of the PS (+) group was significantly higher than that with the PS (-) group. Among the PS (+) group, the mean MA level in the urine obtained in the afternoon was higher than that obtained in the morning. A high correlation was observed between the exhaled CO levels and the number of consumed cigarettes per day in smokers. Like the urinary MA level, the mean exhaled CO level in the PS (+) group, too, gave a significantly higher level than in the PS (-) group. Because the biological half life of MA (7.5 +/- 0.85 h) was longer than that of CO (3.0 +/- 0.36 h), the measurement of urinary MA level is recommended for evaluating the exposure of passive smoking. The measurement of exhaled CO levels is useful only for chain smokers and nonsmokers with PS just before measurement.  (+info)

Chlamydomonas chloroplast ferrous hemoglobin. Heme pocket structure and reactions with ligands. (8/2768)

We report the optical and resonance Raman spectral characterization of ferrous recombinant Chlamydomonas LI637 hemoglobin. We show that it is present in three pH-dependent equilibrium forms including a 4-coordinate species at acid pH, a 5-coordinate high spin species at neutral pH, and a 6-coordinate low spin species at alkaline pH. The proximal ligand to the heme is the imidazole group of a histidine. Kinetics of the reactions with ligands were determined by stopped-flow spectroscopy. At alkaline pH, combination with oxygen, nitric oxide, and carbon monoxide displays a kinetic behavior that is interpreted as being rate-limited by conversion of the 6-coordinate form to a reactive 5-coordinate form. At neutral pH, combination rates of the 5-coordinate form with oxygen and carbon monoxide were much faster (>10(7) microM-1 s-1). The dissociation rate constant measured for oxygen is among the slowest known, 0.014 s-1, and is independent of pH. Replacement of the tyrosine 63 (B10) by leucine or of the putative distal glutamine by glycine increases the dissociation rate constant 70- and 30-fold and increases the rate of autoxidation 20- and 90-fold, respectively. These results are consistent with at least two hydrogen bonds stabilizing the bound oxygen molecule, one from tyrosine B10 and the other from the distal glutamine. In addition, the high frequency (232 cm-1) of the iron-histidine bond suggests a structure that lacks any proximal strain thus contributing to high ligand affinity.  (+info)

Fingerprint Dive into the research topics of Relationship between GHb Concentration and Erythrocyte Survival Determined from Breath Carbon Monoxide Concentration. Together they form a unique fingerprint. ...
The ADT® monitored carbon monoxide detector continually senses carbon monoxide in the air with a range of 35-5,000 parts per million (PPM). When the carbon monoxide detector senses 70 PPM or more, the sensors alarm is triggered. By contrast, the first symptoms of carbon monoxide poisoning, generally slight headaches or flu-like symptoms come on at 100 PPM. The carbon monoxide detector with ADT® monitoring, when used properly, allows for early detection before carbon monoxide poisoning sets in.. This state of the art carbon monoxide detector is equipped with an 85 decibel alarm at 10 feet. The loud alert is used to notify anyone in your home of carbon monoxide buildup. The ADT® monitored carbon monoxide detector is different from the competition because it communicates with the home security panel and alerts ADT® monitoring of increased level of carbon monoxide. ADT® then follows up on the issue and will contact emergency services, as desired. This means that your familys safety isnt ...
Cultures of Clostridium formicoaceticum and C. thermoaceticum growing on fructose and glucose, respectively, were shown to rapidly oxidize CO to CO2. Rates up to 0.4 μmol min−1 mg of wet cells−1 were observed. Carbon monoxide oxidation by cell suspensions was found (i) to be dependent on pyruvate, (ii) to be inhibited by alkyl halides and arsenate, and (iii) to stimulate CO2 reduction to acetate. Cell extracts catalyzed the oxidation of carbon monoxide with methyl viologen at specific rates up to 10 μmol min−1 mg of protein−1 (35°C, pH 7.2). Nicotinamide adenine dinucleotide, nicotinamide adenine dinucleotide phosphate and ferredoxin from C. pasteurianum were ineffective as electron acceptors. The catalytic mechanism of carbon monoxide oxidation was ping-pong, indicating that the enzyme catalyzing carbon monoxide oxidation can be present in an oxidized and a reduced form. The oxidized form was shown to react reversibly with cyanide, and the reduced form was shown to react reversibly ...
To study the role of endogenous carbon monoxide (CO) in collagen metabolism during hypoxic pulmonary vascular remodeling, a total of 18 Wistar rats were used in the study and they were randomly divided into three groups: hypoxia group (n=6), hypoxia with zinc protoporphyrin-IX (ZnPP-IX) group (n=6) and control group (n=6). The measurement of mean pulmonary artery pressure (mPAP) and carboxyhemoglobin (HbCO) formation in lung tissue homogenates was measured. A morphometric analysis of pulmonary vessels was performed, in which the percentage of muscularized arteries (MA); partially muscularized arteries (PMA) and nonmuscularized arteries (NMV) in small and median pulmonary vessels, relative medial thickness (RMT) and relative medial area (RMA) of pulmonary arteries were analyzed. Collagen type I and III and transforming growth factor-beta(3) (TGF-beta(3)) expressions were detected by immunohistochemical assay. The expressions of procollagen type I and III and TGF-beta(3) mRNA were detected by in ...
TY - JOUR. T1 - Steady-state kinetics of the catalytic reduction of nitrogen dioxide by carbon monoxide on platinum. AU - Wickham, D. T.. AU - Koel, B. E.. PY - 1988/12. Y1 - 1988/12. N2 - The steady-state kinetics of the reduction of nitrogen dioxide (NO2) with carbon monoxide (CO) on a polycrystalline platinum foil have been investigated using reactant pressures between 1 × 10-7 and 5 × 10-6 Torr. At temperatures less than 400 K, the primary products formed are carbon dioxide (CO2) and nitric oxide (NO). The CO2 formation rate at temperatures less than 400 K is at least an order of magnitude greater for this reaction than for those of either CO + O2 or CO + NO under similar reaction conditions. The reaction rate is first-order in CO pressure when PCO PNO2 , 0.25 and first-order in NO2 pressure when PCO PNO2 , 1. The activation energy when PCO PNO2 = 0.10 is 7.2 kcal mole-1 which is consistent with the activation energy for CO + O2 under similar conditions. However, when PCO PNO2 = 1.5, the ...
Lt. Robert Deitch said the husband was found dead in the home. His wife was found unconscious in the home and was transported to Overlook Medical Center in Summit.. Deitch said the incident seems to involve exposure to carbon monoxide fumes, and police are awaiting autopsy results. Deitch said the incident is not a criminal matter.. According to a police monitoring service, officers were sent to a home at 12 Cottage Court around 1:20 p.m. Wednesday for a report of a major gas leak. The police monitoring service later indicated that an elderly couple had left their vehicle running in the garage overnight and were exposed to carbon monoxide.. Carbon monoxide is a colorless, odorless, tasteless gas.. The Chicago Tribune reported a couple in their 70s this week were found dead in their home, apparently poisoned by carbon monoxide from a car with a keyless ignition that was accidentally left running in the garage.. In April, four elderly Queens residents died from carbon monoxide exposure after a car ...
TY - JOUR. T1 - Effect of magnesium on preferential oxidation of carbon monoxide on platinum catalyst in hydrogen-rich stream. AU - Cho, Sung Ho. AU - Park, Jong Soo. AU - Choi, Seung Hoon. AU - Kim, Sung Hyun. PY - 2006/6/1. Y1 - 2006/6/1. N2 - The effects of magnesium on platinum catalyst used for the preferential oxidation of carbon monoxide for polymer electrolyte membrane fuel cell applications are investigated. The CO conversion and selectivity on Pt-Mg/Al2O3 for a H2-rich stream are 93.1 and 62.0%, respectively, but only 70.2 and 46.89% on Pt/Al2O3. The superior activity of Pt-Mg/Al2O3 for the preferential oxidation of CO is due to an increase in the hydroxyl groups that results from an increase in basicity with the addition of Mg, as well as to an increase in the electron density on the surface of the Pt catalyst. Moreover, the content of hydroxyl groups on the Pt catalysts is promoted by water vapour.. AB - The effects of magnesium on platinum catalyst used for the preferential ...
TY - JOUR. T1 - Influences of carbon monoxide on the binding of oxygen, carbon dioxide, proton and 2,3-diphosphoglycerate to human hemoglobin.. AU - Yamaguchi, K.. AU - Mori, M.. AU - Kawai, A.. AU - Yokoyama, T.. PY - 1988. Y1 - 1988. N2 - In an attempt to estimate the influences of CO on the CO2 Bohr effect and the 2,3-diphosphoglycerate (DPG) effect linked to the reversible binding of O2 to the hemoglobin molecule (Hb), O2 dissociation curves of human blood in the presence of CO were investigated at 37 degrees C over a DPG concentration ranging from 2.2 to 4.3 mmol/(1RBC) and a pH range of 7.2 to 7.6. The sample with a low DPG concentration was made by incubating whole blood for 6 hrs, whereas the saturation of Hb with CO, SCO in the sample was adjusted by anaerobically mixing completely carboxygenated blood with that free of O2 and CO so as to give the final SCO at either 0, 10, 15, 20, 40 or 50%. The blood samples thus prepared were diluted at 1:100 in isotonic buffer solution and were ...
We have examined the adsorption behaviors of carbon monoxide (CO) molecule on TiO2 anatase supported Au overlayers. The results of density functional theory (DFT) calculations were used in order to gain insights into the effects of the adsorption of CO molecules on the considered hybrid nanostructures. We have investigated different adsorption geometries of CO over the nanoparticles. CO molecule is preferentially adsorbed on the surface of Au atoms with significant adsorption energies. It was found that the CO molecule moves preferentially towards the Au atoms when it was positioned at the top Au sites of the nanoparticle. Here, we have focused on the adsorption of CO on the studied system, and the major point is that the charge is transferred from the CO molecule to the nanoparticle. The results suggest that the oxygen atom has a little mutual interaction with the surface Au atoms. We have summarized the results of density functional theory calculations including adsorption energies, Mulliken charge
Background and Aim: Tobacco is a leading preventable cause of death which causes death of six millions each year worldwide. One of the most effective methods of preventing this are tobacco counseling sessions as it provides a platform for the patient and the dental professionals to map out a plan for the patient to lead a tobacco free life. Therefore, the study was conducted to assess nicotine dependence, cotinine level and carbon monoxide levels among tobacco users employed in private automobile companies in Chennai. ...
During the winter months, cold rainy weather is a reality. During these miserable weather conditions, it is important to keep in mind the threat of accidental carbon monoxide poisoning. The Monterey County Health Department would like to remind everyone that the best defense against carbon monoxide poisoning is prevention.. Carbon monoxide is a poisonous and odorless gas that does not irritate, but can kill a person in minutes. Carbon monoxide is produced whenever any fuel such as gas, oil, kerosene, wood, or charcoal is burned. Carbon monoxide poisoning is preventable says Dr. Hugh Stallworth, Health Officer for the Monterey County, Generators, grills, camp stoves, or other gasoline, propane, natural gas, or charcoal-burning devices should never be used inside a home, basement, garage, or camper - or even outside near an open window.. Follow these tips to avoid accidental injury or death from carbon monoxide:. ...
The main indoor air pollutant that can cause headaches is carbon monoxide. Environmental tobacco smoke and volatile organic compounds can also cause headaches, but irritant symptoms of the eyes and throat are likely to be more prominent with those sources. The most common symptoms of carbon monoxide inhalation include headache, dizziness, weakness, nausea, difficulty in concentrating, shortness of breath and visual changes. Less frequent symptoms include chest pain, loss of consciousness, abdominal pain and muscle cramping.2 The circulatory and nervous systems are often affected because of their fixed oxygen needs: patients who have inhaled carbon monoxide may present with signs of myocardial ischemia, hypotension, congestive heart failure, arrhythmias, mental confusion, clumsiness, emotional lability, impaired judgement, diminished visual acuity, stupor or coma.20 Carbon monoxide poisoning is considered a disease with a thousand faces. 20 Its classic mask - cherry-red lips, cyanosis and ...
Carbon monoxide (CO) is generated wherever combustion occurs, including the operation of gasoline engines, as well as heating and cooking appliances. It is invisible, odorless, tasteless, and deadly. Faulty venting or even a wind shift can create a dangerous situation, particularly in confined areas like boat cabins. Typical symptoms of CO exposure can be mistaken for the flu or seasickness, making accurate on board CO detection a necessity.. The CO Alarm uses a microprocessor to measure and accumulate CO levels. Using the principle of Time Weighted Averaging (TWA), the CO Alarm monitors CO concentration, temperature, and time to calculate levels of Carboxyhemoglobin (COHb). COHb is the degree to which the oxygen carrying capacity of the blood is impeded by the union of carbon monoxide to the hemoglobin and is expressed as a percentage. In simpler terms, our bodies prefer absorbing CO to oxygen, and COHb is the ratio of absorbed carbon monoxide to oxygen in the bloodstream. The CO Alarm ...
Carbon Monoxide Poisoning in Children Approximately nine children die each year from non-fire related carbon monoxide poisoning. Carbon monoxide poisoning is the most common cause of accidental poisoning-related deaths and is often called the silent killer. What causes carbon monoxide poisoning? Carbon monoxide (CO) is a poisonous, colorless, tasteless, odorless gas that is produced from the incomplete burning of fuels that contain carbon, such as wood, charcoal, gasoline, coal, natural gas, or kerose...
Shuniah - At approximately 1:00pm on Sunday, February 19, 2017, Superior North EMS Paramedics attended a residence in Shuniah to assist a female in her 50s with a medical emergency. While attending to the patient their Monitor/Defibrillator alarmed indicating dangerous levels of Carbon Monoxide in the residence. The patient was transported to the hospital and her condition started to improve with fresh air and oxygen. The other two residents showed no signs Carbon Monoxide sickness and attended the hospital with the patient.. Shuniah Fire and Emergency Services responded quickly to the residence and found high levels of Carbon Monoxide, it was unsure at the time if the wood stove or the oil burning furnace was the cause of the Carbon Monoxide. An older Carbon Monoxide detector was present but not working. It was later determined that the wood stove may have been the cause with a down draft situation.. Having the furnace checked annually can ensure that your home, your family and even your pets ...
All Iowans are being reminded about the importance of carbon monoxide detectors after the weekend deaths of two people in Mason City. The towns fire chief Bob Platts says there was a big push to put carbon monoxide detectors in homes 15 to 20 years ago, and if yours is that old, its overdue to be replaced. Carbon monoxide detectors, similar to smoke detectors, they do have a shelf life and when theyre used, they are good for about five years, so Im guessing theres probably a number of them out there that probably are not up to date, he says.. Platts says if you are going to have a carbon monoxide detector in your home, make sure its installed in a proper place. He suggests placing it in a sleeping area or a common area like in a hallway in between bedrooms. He says you should hang it about five feet off the floor because thats about the level that C-O is mixing with air.. Platts says you wont be able to notice carbon monoxide in your home without a detector. Its colorless and ...
Early this month a teenage boy died and 14 others were hospitalized for carbon monoxide poisoning due to a malfunctioning indoor pool heater. While this tragedy is shocking, it is unfortunately not the first time this has happened. Carbon monoxide is produced when fuel is burned, and when too much of it is present in the air, it replaces oxygen within our red blood cells causing significant tissue and muscle damage. Prolonged exposure to carbon monoxide can cause massive brain damage and death. Some of the symptoms of carbon monoxide poisoning are dizziness, weakness, fatigue, vomiting, and confusion. If you believe you are experiencing any of these symptoms, you must get yourself to an open air space as soon as possible before you are rendered unconscious. With proper installation, ventilation and maintenance, there should never be any issues with a carbon monoxide leak from a pool heater causing personal injury. Sadly in these cases, malfunctioning machinery and negligence may have formulated ...
NEW - Mandatory Carbon Monoxide Alarms in Your Home. November 1st is Carbon Monoxide Awareness Week. The Ontario government has passed a law, which came into effect on October 15, 2014, that requires a working carbon monoxide alarm in your home, specifically, outside all sleeping areas, if you have a fireplace, any fuel-burning appliance, or an attached garage.. Carbon monoxide is a poisonous and very dangerous gas because you cant smell or taste it. The symptoms of CO poisoning are gradual, you may start to feel ill and tired. If you are already asleep, you would simply just not wake up.. Any appliance or device that runs on fuel, including propane and wood, can produce this deadly gas. Vehicles running in an attached garage with the door between it and the home left open, or if there is any breach in the wall between the two areas will also allow Carbon Monoxide to enter your home.. Helpful Fact Sheets:. ...
OFTEC Manager David Blevings said; Carbon Monoxide is a highly poisonous gas which in high levels can kill in as little as three minutes earning it the name the silent killer. We fully support carbon monoxide safety month and are working hard to raise awareness of how to prevent carbon monoxide poisoning and keep people safe.. With 50 people every year dying from carbon monoxide poisoning in the UK, it is vital that householders understand the importance of checking their home heating systems annually for leaks, damage or defects, including oil or gas boilers as well as solid fuel appliances. The Health and Safety Executive advises that all heating appliances should be serviced annually by an OFTEC Registered Technician to ensure maximum efficiency and to make sure the appliance is not leaking carbon monoxide. Householders face a greater risk if they have appliances fixed by so-called cowboys who may not be qualified or deemed competent to work in your home. You cant detect CO without ...
New lithium battery powered carbon monoxide detector with digital display, hardwire carbon monoxide alarm, line cord carbon monoxide alarms, standard direct plug-in carbon monoxide detectors, and commercial carbon monoxide monitor.
2015 Haugaa et al. licensee BioMed Central. Introduction: Tissue reperfusion following hemorrhagic shock may paradoxically cause tissue injury and organ dysfunction by mitochondrial free radical expression. Both nitrite and carbon monoxide (CO) may protect from this reperfusion injury by limiting mitochondrial free radial production. We explored the effects of very small doses of inhaled nitrite and CO on tissue injury in a porcine model of hemorrhagic shock. Methods: Twenty pigs (mean wt. 30.6kg, range 27.2 to 36.4kg) had microdialysis catheters inserted in muscle, peritoneum, and liver to measure lactate, pyruvate, glucose, glycerol, and nitrite. Nineteen of the pigs were bled at a rate of 20ml/min to a mean arterial pressure of 30mmHg and kept between 30 and 40mmHg for 90minutes and then resuscitated. One pig was instrumented but not bled (sham). Hemorrhaged animals were randomized to inhale nothing (control, n=7), 11mg nitrite (nitrite, n=7) or 250ppm CO (CO, n=5) over 30minutes before fluid ...
TY - JOUR. T1 - Adsorbed CO at polycrystalline copper in phosphate buffered solution. AU - Salimon, Jumat. PY - 2007/7. Y1 - 2007/7. N2 - The adsorption of CO at polycrystalline copper surface was investigated spectroscopically. It was found that CO adsorbed as a linear adsorbed CO, Cu-COL and was a dominant species on copper surface at low CO concentration. A Cu-COL was electrochemically converted to a bridge bonded CO, Cu-COB at a high CO concentration condition. Increasing the CO surface coverage, θco will increase the formation of adsorbed bridge bonded CO. nitrogen gas purging treatment was used to examine the stability of an adsorbed CO through the evacuation process. The result showed that Cu-COB remained intact while Cu-COL, was completely removed from the copper surface. It suggests that Cu-COL, may involve in a weak bonding to a copper surface such as in a physisorbed interaction, while Cu-CoB, consists much stronger bonding such as a chemisorbed interaction. The N2 purging treatment ...
FRANKFORT- As outdoor winter temperatures drop and the risk for carbon monoxide poisoning increases, Kentuckians are urged to be aware of the dangers of carbon monoxide (CO) poisoning due to improper use of heating or cooking devices.
Background Carbon monoxide (CO) synthesized by heme oxygenase 1 (HO-1) exerts antinociceptive effects during inflammation but its role during neuropathic pain remains unknown. Our objective is to investigate the exact contribution of CO derived from HO-1 in the modulation of neuropathic pain and the mechanisms implicated. Methodology/Principal Findings We evaluated the antiallodynic and antihyperalgesic effects of CO following sciatic nerve injury in wild type (WT) or inducible nitric oxide synthase knockout (NOS2-KO) mice using two carbon monoxide-releasing molecules (CORM-2 and CORM-3) and an HO-1 inducer (cobalt protoporphyrin IX, CoPP) daily administered from days 10 to 20 after injury. The effects of CORM-2 and CoPP on the expression of HO-1, heme oxygenase 2 (HO-2), neuronal nitric oxide synthase (NOS1) and NOS2 as well as a microglial marker (CD11b/c) were also assessed at day 20 after surgery in WT and NOS2-KO mice. In WT mice, the main neuropathic pain symptoms induced by nerve injury were
Carbon Monoxide In The Bridgewall - posted in Industrial Professionals: Hello. Are there any standards determining what is the maksimum carbon monoxide level at which furnace can be sefety operating? Theory say that combustion is optimal with 100-150 ppm of CO in the bridgewall. But is this CO concentration also a border above which work of the furnace is unsafe? Regards
When we breathe it, carbon monoxide combines with with the red blood cells in the blood and displaces the oxygen our bodies need to survive. Carbon monoxide combines with the red blood cells over 200 times more easily than oxygen and creates a condition known as carboxyhemoglobin saturation. Carbon monoxide, instead of oxygen, then enters the vital organs through the bloodstream. Our organ tissues require oxygen; without it, our organs start to asphyxiate or suffocate. It takes the body much longer to eliminate carbon monoxide, however its absorption is very fast. ...
Carbon monoxide is produced from the partial oxidation of carbon-containing compounds; it forms when there is not enough oxygen to produce carbon dioxide (CO2), such as when operating a stove or an internal combustion engine in an enclosed space. In the presence of oxygen, including atmospheric concentrations, carbon monoxide burns with a blue flame, producing carbon dioxide.[11] Coal gas, which was widely used before the 1960s for domestic lighting, cooking, and heating, had carbon monoxide as a significant fuel constituent. Some processes in modern technology, such as iron smelting, still produce carbon monoxide as a byproduct.[12] A large quantity of CO byproduct is formed during the oxidative processes for the production of chemicals. For this reason, the process off-gases have to be purified. On the other hand, considerable research efforts are made in order to optimize the process conditions,[13] develop catalyst with improved selectivity [14] and to understand the reaction pathways ...
This false-color image shows concentrations of carbon monoxide at an altitude of roughly 18,000 feet (500 millibars) in the atmosphere over eastern China. This image represents a composite of data collected over a three-day period, from January 1-3, 2003, by the Measurements Of Pollution In The Troposphere (MOPITT) instrument aboard NASA s Terra satellite. The colors represent the mixing ratios of carbon monoxide in the air, given in parts per billion by volume. In this scene, values range from as high as 205 ppbv (red pixels) to as low as 50 ppbv (blue pixels). The grey areas show where no data were collected, either due to persistent cloud cover or gaps between viewing swaths. (Light gray shows land masses and dark gray shows the Pacific Ocean.). During the time these data were collected by MOPITT, other satellite sensors observed heavy, widespread particulate pollution over this region. Along with smoke and particulate emissions, carbon monoxide is a byproduct of burning biomass and fossil ...
Carbon Monoxide The presence of carbon monoxide (CO) in our homes is dangerous. So, how can you protect your family from carbon monoxide? How do you choose the right CO detector for your home? The first step is to make sure that carbon monoxide never enters your home. The second step is to install at least one CO detector in your home. This About Your House answers often-asked questions about carbon monoxide to help you make the right decision to make your home safe. What Is Carbon Monoxide? Carbon monoxide (CO) is a colourless and odourless gas. Because you cant see, taste or smell it, it can affect you or your family before you even know its there. Even at low levels of exposure, carbon monoxide can cause serious health problems. CO is harmful because it will rapidly accumulate in the blood, depleting the ability of blood to carry oxygen.1 Where Does Carbon Monoxide Come From? Carbon monoxide is a common byproduct of the combustion (burning) of fossil fuels. Most fuel-burning equipment ...
Carbon monoxide poisoning occurs when a flue or fuel burning appliance such as multi-fuel stove, gas cooker, boiler or open fire has not been properly installed, maintained or is poorly ventilated.. To reduce the risk of Carbon Monoxide Poisoning, ensure all fuel burning appliances are properly installed and regularly serviced, at least once per year, by a qualified engineer. You should also fit a carbon monoxide alarm. However, a carbon monoxide alarm should not be used as an alternative to ensuring fuel burning appliances are serviced annually.. Where can I get further information ...
Get information, facts, and pictures about carbon monoxide at Encyclopedia.com. Make research projects and school reports about carbon monoxide easy with credible articles from our FREE, online encyclopedia and dictionary.
Carbon Monoxide Poisoning Abstract: Carbon monoxide (CO) is a colorless, odorless and deadly gas produced by the incomplete burning of fossil fuels used in appliances such as furnaces and portable gas generators. As the cold weather approaches, here are some tips to prevent carbon monoxide build-up in your home:Have a carbon monoxide detector in your home. ...
Carbon monoxide is a gas that you cannot see, taste, or smell. Each year, over 150 kids die due to carbon monoxide poisoning and more than 3,200 are exposed to carbon monoxide. Learn how to protect your family from carbon monoxide poisoning.
As it is evident from above that leakage of carbon monoxide is a serious situation. And by no means will you ever be able to keep a check on this leakage on your own. Only professional duct cleaners, equipped with the right tools, can figure out if your duct is leaking carbon monoxide. Carbon monoxide leakage is risky for you and your loved ones. Therefore, it is very important to hire the experts to keep a check on it.. At Marks Duct Cleaning we provide FREE duct carbon monoxide testing with our duct cleaning services. We always follow the guidelines of Energy Safe Australia to deliver nothing but the best to our customers.. ...
Every Year in the UK, more than 200 people go to hospital with suspected carbon monoxide poisoning, and around 40 people die. Small children and the elderly are most at risk. CORGI Home Plan is campaigning for every home to get a carbon monoxide detector, so that they can keep their family safe. As carbon monoxide is a colourless and odourless toxic flammable gas, we are unable to detect it well ourselves. Carbon Monoxide can be inhaled easily which can be fatal or cause long-term health problems. Corgi Home Plan state that The most common cause of a carbon monoxide leak is from incorrectly installed or poorly maintained household appliances - such as cookers, heaters and central heating boilers. A blocked flue or chimney can also cause carbon monoxide levels to rise to lethal concentrations in an enclosed space. Our health is so important, so I feel carbon monoxide detectors are extremely important and useful to have in the home. ...
We spend most of our time indoors whether we are at home or at work. Most of the time, we spend most of our time at home. Indoor air pollution is becoming a problem that many are starting to understand since we spend a great amount indoors. We start to notice these problems either when we smell odors or feel several symptoms that can link to unhealthy indoor air. One substance that is dangerous for our indoor air is carbon monoxide. Carbon Monoxide destroys air quality. Carbon Monoxide is a colorless and odorless gas. Low levels and high levels of carbon monoxide inside a home can cause flu like symptoms to headaches and can cause death.Since carbon monoxide is a dangerous gas and you cannot smell it or see it, it is important to have a carbon monoxide alarm.. In California, the Carbon Monoxide Detection Act of 2010 made it possible for all homes to require a carbon monoxide detection device. As of last year, all multi-family units were required to install Carbon Monoxide detectors, even if the ...
Carbon Monoxide Testing and Inspection. Carbon Monoxide (CO) is a colorless, odorless, toxic gas and all fuel (gas, oil, kerosene, wood or coal) burning appliances have the potential to produce CO to some degree due to incomplete combustion. Appliances (including fire places) that are not installed, maintained, and used properly run the risk of causing CO accumulation to dangerous levels. Extreme CO exposure can cause death, considering that the gas is colorless and odorless proper detection is vitally important.. Youre A-Pro Inspector can test for Carbon Monoxide in the home as well as the appliances and fixtures that may be causing a dangerous level. Youre A-Pro Inspector will also advise you on the proper detectors and the recommended locations of the detectors as well as proper maintenance needed for offending appliances.. ...
The All-Party Parliamentary Carbon Monoxide Group and Policy Connect report identifies that symptoms of carbon monoxide (CO) poisoning are not routinely being detected in the healthcare system.. The All-Party Parliamentary Carbon Monoxide Group, co-chaired by cross bench Peer, Professor the Baroness Finlay of Llandaff, and Huddersfield MP Barry Sheerman, asked a group of health experts to identify ways of improving the diagnosis of CO poisoning. This is due to health figures showing that every year at least 4,000 people in England and Wales attend emergency departments (EDs) as the result of accidental CO poisoning.. Health experts know that CO exposure leads to more than 30 people a year losing their lives and 200 people being admitted to hospital. But it is not yet known how many undiagnosed cases return home, become ill again, or die from continued exposure to CO. The experts believe these figures could be a gross underestimation and the actual cost to the NHS is likely to be much more than ...
The All-Party Parliamentary Carbon Monoxide Group and Policy Connect report identifies that symptoms of carbon monoxide (CO) poisoning are not routinely being detected in the healthcare system.. The All-Party Parliamentary Carbon Monoxide Group, co-chaired by cross bench Peer, Professor the Baroness Finlay of Llandaff, and Huddersfield MP Barry Sheerman, asked a group of health experts to identify ways of improving the diagnosis of CO poisoning. This is due to health figures showing that every year at least 4,000 people in England and Wales attend emergency departments (EDs) as the result of accidental CO poisoning.. Health experts know that CO exposure leads to more than 30 people a year losing their lives and 200 people being admitted to hospital. But it is not yet known how many undiagnosed cases return home, become ill again, or die from continued exposure to CO. The experts believe these figures could be a gross underestimation and the actual cost to the NHS is likely to be much more than ...
The specific gravity of Carbon Monoxide is 0.9657 (with normal air being 1.0), this means that it will float up towards the ceiling because it is lighter than regular air. However, when a build up of dangerous levels of CO gas is taking place, this is nearly always due to a heat source that is not burning its fuel correctly (motor vehicle exhaust fumes are an exception). This heated air can form a layer near your ceiling which can prevent the Carbon Monoxide from reaching a ceiling detector.. For this reason I strongly suggest that it is best to mount your detectors on the walls at least a couple of feet below the height of the ceiling. If your detector has a digital read-out, then I recommend placing it at about eye level so you can easily read it. Or if you have some other structure, like the exposed beam in this photograph insdide my house which is positioned below the ceiling level, then you can attach your carbon monoxide detectors to it instead.. ...
ATLANTA - Potentially lethal carbon monoxide levels at an Atlanta elementary school with no detectors sent at least 42 students and seven adults to hospitals today and forced 500 more to evacuate, authorities said. Young children with oxygen masks over their faces were strapped to gurneys and others carried to ambulances by emergency officials at Finch Elementary School in southwest Atlanta. Four students reported passing out at the school, according to hospital officials. A teacher and a cafeteria worker were also among those treated. Firefighters found unsafe levels of carbon monoxide near a furnace at the school with a reading at 1,700 parts per million, said Atlanta fire Capt. Marian McDaniel. The colorless, odorless gas can be deadly at that concentration, said Stephanie Hon, assistant director of the Georgia Poison Center. Superintendent Erroll Davis praised school officials for quickly evacuating after children started getting sick and said officials were considering installing carbon ...
The SC0403 is a combination pack of Carbon Monoxide (CO) and smoke alarm. This product can detect the CO you cant see, smell or taste in the air. The unit monitors and re-alarms if carbon monoxide levels
Boaters and marina workers should exercise caution this summer before taking to the seas. A study published online in the Journal of Occupational and Environmental Hygiene outlines hazards posed by carbon monoxide levels on houseboats that use gasoline-powered generators without emission controls, along with controls that are available to reduce exposure to carbon monoxide from the generators.
In recent years there have been considerable new legislation and efforts by vehicle manufactures aimed at reducing pollutant emission to improve air quality in urban areas. Carbon monoxide is a major pollutant in urban areas, and in this study we analyze monthly carbon monoxide data from Valencia City, a representative Mediterranean city in terms of its structure and climatology. Temporal and spatial trends in pollution were recorded from a monitoring network that consisted of five monitoring sites. A multiple linear model, incorporating meteorological parameters, annual cycles, and random error due to serial correlation, was used to estimate the temporal changes in pollution. An analysis performed on the meteorologically adjusted data reveals a significant decreasing trend in CO concentrations and an annual seasonal cycle. The model parameters are estimated by applying the least-squares method. The standard error of the parameters is determined while taking into account the serial correlation ...
Title:Application of Carbon Monoxide for Transplantation. VOLUME: 13 ISSUE: 6. Author(s):Atsunori Nakao and Yoshiya Toyoda. Affiliation:E1551, Biomedical Science Tower, 200 Lothrop Street, Pittsburgh, PA, 15213, USA.. Keywords:Carbon monoxide, transplantation, ischemia reperfusion, rejection. Abstract:Carbon monoxide (CO) is an invisible, chemically inert, colorless and odorless gas and is toxic at high concentrations due to its interference with oxygen delivery. However, CO is endogenously and physiologically generated in mammalian cells via the catabolism of heme in a rate-limiting step of heme oxygenase systems, and CO potently protects against cellular injury. CO relaxes blood vessels and exerts anti-thrombotic effects by inhibiting platelet aggregation and derepressing fibrinolysis. In addition, CO reduces ischemia/reperfusion injury and inflammatory responses. CO inhibits apoptosis of endothelial and epithelial cells and reduces proliferation of smooth muscle cells, fibroblasts and T ...
COLD WEATHER INCREASES CARBON MONOXIDE HAZARDS FROM CARS. AMES, Iowa -- In cold weather do you open the overhead garage door and start the car to let it warm up for a minute or two before driving away? Thomas Greiner, an extension agricultural engineer from Iowa State University, has this warning. Dont ever warm-up a car in a garage, even with the garage door open. In less than two minutes gas fumes build to lethal concentrations in the garage. In an attached garage, fumes can quickly spread to the house.. Deadly fumes from vehicle exhaust include carbon monoxide (CO), a colorless, odorless, tasteless, and non-irritating byproduct of incomplete combustion. Greiner has consulted on and investigated several cases of poisoning from car fumes, some resulting in death.. When cold engines first start, they run rich, Greiner said. The catalytic converter is cold and not converting deadly carbon monoxide (CO) to carbon dioxide (CO2). Concentrations in the exhaust can be more than 80,000 parts per ...
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Carbon monoxide is a common by-product of combustion, present whenever fossil fuels are burned. It is produced by malfunctioning or un-vented gas or oil home appliances such as furnaces, clothes dryers, ranges, ovens, water heaters and space heaters, as well as fireplaces, charcoal grills and wood burning stoves. Automobile exhaust also contains high levels of carbon monoxide that can seep into a home if a car is left running in an attached garage. All of these sources can contribute to a CO problem in the home.. Usually, carbon monoxide is vented safely to the outside. However, insulation meant to keep indoor air warm during the winter or cool in the summer can help trap CO-polluted air in the home. Furnace heat exchangers can crack; vents and chimneys may reverse direction causing a downdraft, which traps combustion gases in the home.. How can I protect my family? ...
This pair of images shows levels of carbon monoxide at the atmospheric pressure level of 700 millibars (roughly 12,000 feet in altitude) over the continent of South America, as observed by the Measurements Of Pollution In The Troposphere (MOPITT) sensor flying aboard NASAs Terra spacecraft. Data for producing the image on the left were acquired on March 3, 2000, and for the image on the right on September 7, 2000. Blue pixels show low values, yellows show intermediate values, and the red to pink and then white pixels are progressively higher values. In the lefthand image (March 3), notice the fairly low levels of carbon monoxide over the entire continent. The slightly higher equatorial values are the result of burning emissions in sub-Saharan Africa that are convected at the Intertropical Convergence Zone (ITCZ) and spread by the trade winds. Also, notice the effect of the elevated surface topography across the Andes Mountains running north to south along the western coastline. (In this region, ...
Carbon Monoxide (CO) is an odorless, colorless and tasteless gas. Carbon monoxide poisoning is caused when CO builds up in the bloodstream, preventing the body from using oxygen. This can cause damage to your severe organs, and possibly death. Because you cannot see, taste, or smell it, people often do not realize that they are breathing CO. The only way to know if CO is in your home is with a CO detector. Therefore, its important for families to have CO detectors installed on every level of their home, and to know how to prevent carbon monoxide poisoning. ...
"Carbon Monoxide." Occupational Health: The Soldier and the Industrial Base. 1993: Office of the Surgeon General, U.S. ... as ventilation was inadequate the atmosphere was heavy with poisonous carbon monoxide from the engine and firing the weapons, ...
... carbon monoxide; sulfur oxides; nitrogen oxides; and lead. The National Emissions Standards for Hazardous Air Pollutants are ... carbon dioxide, which is absorbed by plants and oceans). Fund pollutants are not destroyed, but rather converted into less ...
He used carbon monoxide. Before his suicide, he videotaped himself demonstrating the apparatus, a mask attached to a cylinder ... technique currently recommended on the web is carbon monoxide inhalation. You can get a cylinder of the stuff, together with an ... of carbon monoxide gas (see Mercitron). Other Places-Lois Svard performs Elodie Laten, Jerry Hunt, Kyle Gann, Lois Svard, piano ...
... carbon-rich "diamond worlds"; purely hot "ice VII worlds"; purely "carbon monoxide worlds". If the planet transits the star as ... However, it remains unknown if water and/or carbon dioxide are even present on the surface of Gliese 581c. Alternatively, an ... Theoretical models predict that volatile compounds such as water and carbon dioxide, if present, might evaporate in the ... release of carbon dioxide by volcanic activity or of water vapor due to heating at the substellar point would trigger a runaway ...
Results showed that the hybrid powered buses lowered fuel consumption by 23%; NOx by 18%; carbon monoxide (CO) by 60%; and ...
Some fish for sashimi are treated with carbon monoxide to keep the flesh red for a longer time in storage. This practice can ... Moskin, Julia (6 October 2004). "Tuna's Red Glare? It Could Be Carbon Monoxide". The New York Times. Archived from the original ...
Carbon monoxide has a facilitated diffusion process similar to that of oxygen. They both make use of the high affinity of ... Carbon monoxide also combines with hemoglobin and myoglobin with the help of facilitated diffusion just as it is in oxygen but ... Carbon monoxide has a dissociation velocity which is 100 times less than that of oxygen; its affinity for myoglobin is 40 times ... The case of carbon monoxide". J. Biol. Chem. 246 (19): 5903-6. PMID 5116656. Thorens B (1993). "Facilitated glucose ...
COMAP, or Carbon Monoxide Mapping Array Pathfinder, was commissioned in November 2018 to create carbon monoxide density maps of ... "Carbon Monoxide Mapping Array Pathfinder". Caltech Astronomy. Retrieved 2018-11-16. "OVRO 40m Telescope". Caltech Astronomy. ... Valley Solar Array The OVRO Long Wavelength Array The OVRO 40M Telescope Fermi Blazar Monitoring Program The Carbon Monoxide ...
Carbon monoxide inhibits the reaction. There are some evidence of cytochrome P450 being responsible for the bioactivation of ... In ANTU poisoning plasma, carbon and ferritin escape through a gap in the thick part of the pulmonary capillary into the ... This metabolite is most likely atomic sulfur or alternatively, the one containing the carbonyl carbon of ANTU. However, it is ... atomic sulfur and a metabolic reactive containing the carbon carbonyl of ANTU. A portion of the atomic sulfur formed in this ...
He also pledged to be at the forefront of legislative efforts to require the use of carbon monoxide detectors in commercial ... President & CEO of Legal Sea Foods, Roger Berkowitz, said that the company would install carbon monoxide detectors and conduct ... CS1 maint: discouraged parameter (link) Field, Alexandra (2014-02-24). "One dead from carbon monoxide poisoning". CNN.Com. ... a carbon monoxide leak killed the manager of the Legal Sea Foods at the Walt Whitman Shops in Huntington Station, New York and ...
The man's dog also died in another room of the man's apartment; this was attributed to carbon monoxide poisoning. In December ...
In this case, the carbon monoxide used in the test will bind to haemoglobin that has bled into the lung. This does not reflect ... By analyzing the concentrations of carbon monoxide and inert gas in the inspired gas and in the exhaled gas, it is possible to ... This test gas mixture contains a small amount of carbon monoxide (usually 0.3%) and a tracer gas that is freely distributed ... Collard, P; Njinou, B; Nejadnik, B; Keyeux, A; Frans, A (May 1994). "Single breath diffusing capacity for carbon monoxide in ...
"Carbon monoxide scare at Edmonton high school". 19 September 2011. "Suspended teach 'feels better' because of support". 2 June ... students at Ross Sheppard high school were sent home early Monday morning after carbon monoxide was detected to be at ...
One exception to this is carbon monoxide. In this case, the carbon atom carries the partial negative charge although it is less ... Some non-obvious examples where dative bonding is claimed to be important include carbon suboxide (O≡C → C0 ← C≡O), ... Thus, these molecules are claimed to be better modeled as coordination complexes of :C: (carbon(0) or "carbone") or :N:+ ( ... Schmidbaur, Hubert; Schier, Annette (2013-01-02). "Coordination Chemistry at Carbon: The Patchwork Family Comprising (Ph 3 P) 2 ...
... carbon monoxide, VOC, volatile organic compounds; UPLC-MS, ultra-performance liquid chromatography-mass spectrometry; HPLC-DAD- ...
Survivors of carbon monoxide poisoning had relatively normal abilities on routine, attentional tasks, but were impaired on high ... The influence of Parkinson's disease on the SAS are consistent with those found for carbon monoxide poisoning, and both confirm ... "Supervisory attentional control following carbon monoxide poisoning". Journal of International Neuropsychology Society. 10 (6 ...
Fuertig, H.; Wolf, F.; Haedicke, U.; Weber, M.; Knoll, H. "Removal of Carbon Monoxide From Gases". E. Germany Patent DD58736. ... such as removal of carbon monoxide from gas. In 1972, a patent was filed describing the production of Cu-Y zeolites from sodium ... they are utilized as desulfurization agents and in the production of nitrogen gas from nitrogen monoxide. Copper based type Y ...
Another danger caused by the increased number of automobiles was carbon monoxide (CO). Motorists would sometimes pass out or ... CS1 maint: discouraged parameter (link) "Science: Carbon Monoxide". Time. May 26, 1924. Retrieved January 15, 2011. CS1 maint: ... The carbon technology for hearing aids was used until the miniature vacuum tube replaced it in the 1940s. Advertisements in ... CS1 maint: discouraged parameter (link) "Acousticon Carbon Hearing Aids". Hearing Aid Museum. Retrieved January 16, 2011. CS1 ...
This combination significantly reduces the delivery of oxygen to the tissues of the body, which is what makes carbon monoxide ... Hlastala, M. P.; McKenna, H. P.; Franada, R. L.; Detter, J. C. (1976-12-01). "Influence of carbon monoxide on hemoglobin-oxygen ... Another special case of the Bohr effect occurs when carbon monoxide is present. This molecule serves as a competitive inhibitor ... Since carbon dioxide reacts with water to form carbonic acid, an increase in CO2 results in a decrease in blood pH, resulting ...
In 1995 carbon monoxide was detected in Chiron in very small amounts, and the derived CO production rate was calculated to be ... Womack, Maria; Stern, Alan (1999). "Observations of Carbon Monoxide in (2060) Chiron" (PDF). Conference Proceedings, Lunar and ...
Carbon monoxide, freon and methane, all originating from the auxiliary generator, infiltrated the tower through ventilation ... Spigelmyer, Sharon (July 16, 1977). "Heavy Carbon Monoxide In Hotel Guests (page one)". Las Vegas Sun. Retrieved December 2, ... Spigelmyer, Sharon (July 16, 1977). "Heavy Carbon Monoxide In Hotel Guests (page two)". Las Vegas Sun. Retrieved December 2, ... Spigelmyer, Sharon (July 16, 1977). "Heavy Carbon Monoxide In Hotel Guests (page three)". Las Vegas Sun. Retrieved December 2, ...
Scientists report that the coma of interstellar comet 2I/Borisov contains more than three times more carbon monoxide gas than ... "The carbon monoxide-rich interstellar comet 2I/Borisov". Nature Astronomy. 4 (9): 867-871. arXiv:2004.08972. Bibcode:2020NatAs. ... "Rising carbon dioxide levels will make us stupider". Nature. 580 (7805): 567. 20 April 2020. Bibcode:2020Natur.580Q.567.. doi: ... "Carbon emissions fall 17% worldwide under coronavirus lockdowns, study finds". www.cbsnews.com. Retrieved 14 June 2020. "COVID- ...
SURGEON GENERAL'S WARNING: Cigarette Smoke Contains Carbon Monoxide. Section 4 continues to elaborate on the visual ... SURGEON GENERAL'S WARNING: Cigarette Smoke Contains Carbon Monoxide. SURGEON GENERAL'S WARNING: Quitting Smoking Now Greatly ...
Carbon monoxide is present in the planet's atmosphere. Tau Boötis b does not transit its star, rather, its orbit is inclined 46 ...
"Trapping of the methyl cation by carbon monoxide; formation of acetic acid from methane". Journal of the Chemical Society D: ... The carbon atom is a prototypical (and exact) example of sp2 hybridization. For mass spectrometry studies at low pressure, ...
Carbon monoxide is typically used for iron and steel. There are various types of equipment that can measure the presence of ...
It can also oxidize carbon monoxide into carbon dioxide. The carbon dioxide can then be converted into methane in a process ... M. acetivorans has been noted for its ability to metabolize carbon monoxide to form acetate and formate. ... "Anaerobic growth of Methanosarcina acetivorans C2A on carbon monoxide: an unusual way of life for a methanogenic archaeon". ...
Watson, P; Somorjai, G. A. (1981). "The hydrogenation of carbon monoxide over rhodium oxide surfaces". Journal of Catalysis. ...
Hence, some fuel will remain as a hydrocarbon, or it will react only to carbon monoxide (CO). The carbon monoxide concentration ... An exhaust gas analyser or exhaust carbon monoxide (CO) analyser is an instrument for the measurement of carbon monoxide among ... Carbon monoxide sensors are used to assess the CO amount during an Ministry of Transport test. In order to be used for such ... Sensors are most often used for measuring carbon monoxide. The best of these have sensitivities of 20-50 PPM. Most CO sensors ...
... carbon monoxide alarms are included in the "Carbon Monoxide Alarms industry" report of 2017 to 2022. "Americans Neglect ... "Global Carbon Monoxide Alarms Market Analysis 2011-2017 and Forecast 2018-2023 , Home". www.apexresearch.biz. Retrieved 14 ... "Carbon Monoxide Alarms Market 2017 - Kidde, Gentex, Empaer, BRK Brands, New-Force, Honeywell - First News Service". ... In April 2013, Kidde expanded its Worry-Free product line to include UL-listed carbon monoxide (CO) alarms. In November 2017, ...
Among them are nicotine, tar, carcinogens and carbon monoxide. *Nicotine is a drug that is addictive. It damages brain tissue. ... Carbon monoxide is a colourless and poisonous gas that stops hemoglobin from taking oxygen around the body. ...
The four top gases in 67P's halo were water, carbon dioxide, carbon monoxide, and oxygen.[23] The ration of oxygen to water ... The Rosetta mission found carbon monoxide, carbon dioxide, ammonia, methane and methanol in the Coma of Comet 67P, as well as ... and it found that electrons created by UV light were colliding and breaking up molecules of water and carbon monoxide.[13] ... In 2015, it was noted that the ALICE instrument on the ESA Rosetta spacecraft to comet 67/P, detected hydrogen, oxygen, carbon ...
Phosphorus monoxide. *பாசுபரசு மோனோநைட்ரைடு. *பொட்டாசியம் குளோரைடு. *சிலிக்கான் கார்பைடு. *Silicon mononitride. *Silicon ...
Examples include pulmonary function testing (e.g. nitrogen washout test, diffusion capacity testing (carbon monoxide, helium, ...
... and symmetrical ketones by reacting with carbon monoxide. They thermally decompose to eliminate a β-hydrogen, producing alkenes ... Reaction with carbon Lithium is the only metal that reacts directly with carbon to give dilithium acetylide. Na and K can react ... They also react with carbon dioxide and carbon tetrachloride, so that normal fire extinguishers are counterproductive when used ... Lithium and sodium react with carbon to form acetylides, Li2C2 and Na2C2, which can also be obtained by reaction of the metal ...
This will form carbon monoxide, hydrogen, and oxygen, which ultimately could be used to synthesize liquid fuels in an ... have shown proof of concept and are completing a prototype device that will use concentrated solar energy to reenergize carbon ...
Carbon monoxide is not well adsorbed by activated carbon. This should be of particular concern to those using the material in ... Woven carbon[edit]. There is a technology of processing technical rayon fiber into activated carbon cloth for carbon filtering ... Carbon tetrachloride activity[edit]. Measurement of the porosity of an activated carbon by the adsorption of saturated carbon ... Extruded activated carbon (EAC)[edit]. Extruded activated carbon (EAC) combines powdered activated carbon with a binder, which ...
Carbon dioxide - CO2. *Carbon disulfide - CS2. *Carbon monoxide - CO. *Carbon tetrabromide - CBr4 ...
The CoGen device generates the deadly gas carbon monoxide, which is inhaled with a face mask.[77] ...
The process decomposes coal and generates carbon dioxide (CO. 2), hydrogen (H. 2), carbon monoxide (CO), methane (CH. 4). In ... The predominant product gases are methane, hydrogen, carbon monoxide and carbon dioxide. Ratios vary depending upon formation ... Alternatively gas can be used to produce synthetic natural gas or hydrogen and carbon monoxide can be used as a chemical ... 2: Proponents of UCG have argued that the process has advantages for geologic carbon storage.[4] Combining UCG with CCS (Carbon ...
Carbon dioxide sensor. *Carbon monoxide detector. *Catalytic bead sensor. *Chemical field-effect transistor ...
95.32% carbon dioxide. 2.7% nitrogen. 1.6% argon. 0.13% oxygen. 0.08% carbon monoxide. 210 ppm water vapor. 100 ppm nitric ...
... are better at this carbon monoxide garage trip than a thousand overrated US geetah schmucks. Weird, wonderful, ...
Burning produces carbon dioxide, airborne carbon particulates, carbon monoxide and nitrous oxides.[73] The WHO estimates 3.7 ... Biofuels are in theory carbon-neutral because the carbon dioxide that is absorbed by the plants is equal to the carbon dioxide ... Syngas, a mixture of carbon monoxide, hydrogen and other hydrocarbons, is produced by partial combustion of biomass, that is, ... Forests and Carbon Sequestration[edit]. Scientific research (20th century) shows that carbon dioxide emissions from all forms ...
Diffusing capacity (or DLCO) is the carbon monoxide uptake from a single inspiration in a standard time (usually 10 seconds). ...
... with carbon dioxide gas showing good solubility in many ionic liquids. Carbon monoxide is less soluble in ionic liquids than in ... Carbon capture[edit]. Main article: Ionic liquids in carbon capture. ILs and amines have been investigated for capturing carbon ... and Their Application in Carbon-Carbon Coupling Reactions". J. Am. Chem. Soc. 126 (48): 15876-82. doi:10.1021/ja0463482. PMID ... lends itself to Carbon-13 NMR analysis. In this way the entire complex of starch, sucrose, glucose, and fructose can be ...
Carbon monoxide and halogen gases (for example carbon tetrafluoride, sulfur hexafluoride, or dichlorodifluoromethane) require ... The active ingredients are usually carbon monoxide (possibly in the form of combusted fuel gas) and hydrogen. Thermal ...
Retrieved from "https://en.wikipedia.org/w/index.php?title=Carbon_monoxide_(data_page)&oldid=858648396" ...
Anemia and carbon monoxide poisoning are common causes of hypemic hypoxia.. *Ischemic hypoxia ( or "stagnant hypoxia") - ... Recent research suggests this may be due to an autoimmune response caused by carbon monoxide-induced changes in the myelin ... For example, the long-term effects of serious carbon monoxide poisoning usually may take several weeks to appear. ... "Long-Term Effects of Carbon Monoxide Poisoning Are an Autoimmune Reaction". ScienceDaily. Retrieved 2007-04-13.. ...
Carbon monoxide (CO). *Chromium(II) oxide (CrO). *Cobalt(II) oxide (CoO) ... Tellurium monoxide Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 ...
Protonated carbon dioxide. *Protonated hydrogen cyanide. *Silicon tricarbide. *Thioformaldehyde. *Tricarbon monoxide. * ...
Carbon monoxide (CO). *Cyanides in hydrochemical metallurgical processes. *Carbon (C). *Tris-2-carboxyethylphosphine ...
People with COPD also exhibit a decrease in diffusing capacity of the lung for carbon monoxide (DLCO) due to decreased surface ... Low oxygen levels, and eventually, high carbon dioxide levels in the blood, can occur from poor gas exchange due to decreased ... This close-up of the fixed, cut lung surface shows multiple cavities filled with heavy black carbon deposits. ... In those at high risk of high carbon dioxide levels, oxygen saturations of 88-92% are recommended, while for those without this ...
... carbon monoxide), or cause harm simply by displacing oxygen and producing asphyxia (e.g. methane, carbon dioxide). The effect ... carbon monoxide, and sulfur dioxide. Chlorine is a relatively common gas in industry with a variety of uses. It is used to ...
... neuroimaging and neuropsychological findings following carbon monoxide poisoning and obstructive sleep apnea". J Int ... As in central apnea, pauses are followed by a relative decrease in blood oxygen and an increase in the blood carbon dioxide. ...
Carbon monoxide HAx Molecules with a single H HF Hydrogen fluoride ... Most carbon compounds CO2 Carbon dioxide Determining the point group is a useful way to predict polarity of a molecule. In ... Carbon dioxide (CO2) has two polar C=O bonds, but the geometry of CO2 is linear so that the two bond dipole moments cancel and ... In the methane molecule (CH4) the four C−H bonds are arranged tetrahedrally around the carbon atom. Each bond has polarity ( ...
A study across the Chicago region determined that trees removed approximately 17 tonnes of carbon monoxide (CO), 93 tonnes of ... Carbon sequestration. Urban forest managers are sometimes interested in the amount of carbon removed from the air and stored in ... Brack, C. L. (2002-03-01). "Pollution mitigation and carbon sequestration by an urban forest". Environmental Pollution. 116: ... their forest as wood in relation to the amount of carbon dioxide released into the atmosphere while running tree maintenance ...
Use of biodiesel also results in reductions of unburned hydrocarbons, carbon monoxide (CO), and particulate matter. CO ... resulting in a mixture of carbon chains that typically contain between 9 and 25 carbon atoms per molecule.[8] ... "Emission Facts: Average Carbon Dioxide Emissions Resulting from Gasoline and Diesel Fuel". US Environmental Protection Agency. ... of the fuel mass is carbon, and when burned, it offers a net heating value of 43.1 MJ/kg as opposed to 43.2 MJ/kg for gasoline ...
... a higher yield of hydrogen gas can be harnessed by further oxidizing carbon monoxide to produce more hydrogen and carbon ... A study performed by the Chonbuk National University concluded that a B30 biodiesel blend reduced carbon monoxide emissions by ... Under temperatures ranging from 700 - 1100 °C, a nickel-based catalyst enables the production of carbon monoxide and hydrogen:[ ... and the general public result in substantial reductions in poisonous carbon monoxide and particulate matter.[39] ...
Carbon monoxide-releasing molecules. *v. *t. *e. Types of tetrapyrroles. Bilanes. (Linear). ...
As the cold weather approaches, here are some tips to prevent carbon monoxide build-up in your home:Have a carbon monoxide ... Carbon monoxide (CO) is a colorless, odorless and deadly gas produced by the incomplete burning of fossil fuels used in ... Carbon Monoxide Detector} Have a carbon monoxide detector in your home. Since you can t see or smell carbon monoxide, you will ... Carbon Monoxide Poisoning. Carbon monoxide (CO) is a colorless, odorless and deadly gas produced by the incomplete burning of ...
The generally higher carbon monoxide levels as compared to March are both the result of South American fire emissions and the ... This pair of images shows levels of carbon monoxide at the atmospheric pressure level of 700 millibars (roughly 12,000 feet in ... In the lefthand image (March 3), notice the fairly low levels of carbon monoxide over the entire continent. The slightly higher ... In the righthand image (September 7), a large carbon monoxide plume is seen over Brazil, produced primarily by biomass burning ...
... carbon monoxide & radon detectors section of Lowes.com. Find quality carbon monoxide detectors online or in store. ... First Alert Z Wave Battery-operated Carbon Monoxide Detector and Smoke Detector ... Shop carbon monoxide detectors in the smoke, ... First Alert 6-Pack Battery-operated Carbon Monoxide Detector (1 ...
Each year, over 150 kids die due to carbon monoxide poisoning and more than 3,200 are exposed to carbon monoxide. Learn how to ... Carbon monoxide is a gas that you cannot see, taste, or smell. ... Remove Carbon Monoxide filter Carbon Monoxide. *Batteries Apply ... Top Tips for Carbon Monoxide Safety. *Install carbon monoxide (CO) alarms. Make sure there is one on every level of your home, ... The Hard Facts of Carbon Monoxide. In 2017, poison control centers reported 3,248 cases of carbon monoxide exposure in children ...
Warnings over dangers of carbon monoxide on ITV News, videos, stories and all the latest Meridian news ... Warnings over carbon monoxide. The charity Carbon Monoxide Awareness is holding its eighth National Carbon Monoxide Awareness ... Warnings over dangers of carbon monoxide. The charity Carbon Monoxide Awareness is holding its eighth National Carbon Monoxide ... The group supports the many victims of carbon monoxide poisoning, their families and friends, and campaigns for greater ...
... Carbon monoxide (CO) is an invisible, odorless, tasteless gas that is produced when a ... carbon-based fuel burns. CO can make you sick in seconds. In high enough concentrations, even a few breaths can be fatal. ... Topic 8: Carbon Monoxide (CO) Poisoning. *What Is Carbon Monoxide Poisoning?. *Preventing CO Poisoning Before You Go Boating ...
Clinical trials of small amounts of carbon monoxide as a drug are ongoing.[21] Too much carbon monoxide causes carbon monoxide ... In bacteria, carbon monoxide is produced via the reduction of carbon dioxide by the enzyme carbon monoxide dehydrogenase, an Fe ... "CARBON MONOXIDE - CAMEO Chemicals - NOAA". cameochemicals.noaa.gov.. *^ "Molecular orbitals in Carbon Monoxide CO". University ... Solid carbon monoxide is a component of comets.[75] Halleys Comet is about 15% carbon monoxide.[76] It has also been ...
A study published online in the Journal of Occupational and Environmental Hygiene outlines hazards posed by carbon monoxide ... along with controls that are available to reduce exposure to carbon monoxide from the generators. ... Study highlights carbon monoxide hazards on houseboats NIOSH study measures hazardous concentrations of carbon monoxide on ... Study-Highlights-Carbon-Monoxide-Hazards-on-Houseboats-.. aspx More in Medicine & Health. * Want a healthier population? Spend ...
Carbon monoxide is a poisonous and odorless gas that does not irritate, but can kill a person in minutes. Carbon monoxide is ... Install certified carbon monoxide warning devices in hallways outside bedrooms. These devices should not replace the other ... "Carbon monoxide poisoning is preventable" says Dr. Hugh Stallworth, Health Officer for the Monterey County, "Generators, grills ... Follow these tips to avoid accidental injury or death from carbon monoxide:. *Never burn charcoal inside homes, tents, campers ...
First Alert is the number one brand in home safety products including carbon monoxide detectors, CA approved CO detectors, ... Learn more about the dangers of smoke and carbon monoxide. Click on the links below to find facts and safety tips to help you ... A national survey reveals nearly three quarters of Americans think carbon monoxide (CO) can be "very dangerous" in the home, ...
Make research projects and school reports about carbon monoxide easy with credible articles from our FREE, online encyclopedia ... and pictures about carbon monoxide at Encyclopedia.com. ... Carbon monoxide. Carbon monoxide is a compound of carbon and ... The afterdamp occurring in such situations is a mixture of carbon dioxide and carbon monoxide.. Carbon monoxide is a ... Carbon monoxide poisoning-at least at moderate levels-is so common in everyday life that carbon monoxide detectors, similar to ...
You can test a carbon monoxide detector to ensure it can identify the level of carbon monoxide (CO) in the air, measured in ... Knowing your carbon monoxide detector is working properly is a serious matter. ... Knowing your carbon monoxide detector is working properly is a serious matter. You can test a carbon monoxide detector to ... Step 4 - Use a Carbon Monoxide Detector Test Kit. Carbon monoxide detector test kits can be purchased where you buy your CO ...
Carbon monoxide reduces the oxygen supply to the brain, causing carbon monoxide intoxication. At high concentrations, such as ... buy UL listed carbon monoxide alarms and install them near sleeping areas and on every level of your home. "Carbon monoxide is ... The catalytic converter is cold and not converting deadly carbon monoxide (CO) to carbon dioxide (CO2). Concentrations in the ... COLD WEATHER INCREASES CARBON MONOXIDE HAZARDS FROM CARS. AMES, Iowa -- In cold weather do you open the overhead garage door ...
Carbon Monoxide Carbon Monoxide (CO) is an odorless, colorless and tasteless gas. Carbon monoxide poisoning is caused when CO ... and to know how to prevent carbon monoxide poisoning. Sources of CO. Carbon monoxide (CO) is produced when fuels such as gas, ... HOME , WHAT WE DO BY TOPIC , CHILDRENS HEALTH , INJURY PREVENTION , CARBON MONOXIDE SAFETY ... Install carbon monoxide detectors on every level of your home near bedrooms. ...
Joint Center for Artificial Photosynthesis have determined how electrocatalysts can convert carbon dioxide to carbon monoxide ... Converting carbon dioxide to carbon monoxide using water, electricity. University of Illinois at Chicago ... a mixture of carbon monoxide and hydrogen.. "The electrochemical reduction of carbon dioxide to fuels is a subject of ... the current density of carbon monoxide and hydrogen as a function of applied potential and pressure of carbon dioxide. ...
Carbon monoxide (CO), an odorless, colorless gas, which can cause sudden illness and death, is produced any time a fossil fuel ... Carbon Monoxide Poisoning * General Informationplus icon *Carbon Monoxide Poisoning and Boating ...
... and generators in buildings or semi enclosed spaces have been poisoned by carbon monoxide ... Toll Collectors and Tunnel Officers (Carbon Monoxide). This Topic page is based on the Alert, "Preventing Carbon Monoxide ... Carbon Monoxide Hazards from Small Gasoline Powered Engines. Many people using gasoline-powered tools such as high-pressure ... ALERT: Preventing Carbon Monoxide Poisoning from Small Gasoline-Powered Engines and Tools. DHHS (NIOSH) Publication No. 96-118 ...
Carbon monoxide, also known as CO, is called the "Invisible Killer" because its a colorless, odorless, poisonous gas. More ... Know the symptoms of carbon monoxide poisoning: headache, dizziness, weakness, nausea, vomiting, sleepiness, and confusion. If ...
Too much carbon monoxide causes carbon monoxide poisoning.. Molecular properties[edit]. Carbon monoxide has a molar mass of ... In bacteria, carbon monoxide is produced via the reduction of carbon dioxide by the enzyme carbon monoxide dehydrogenase, an Fe ... Carbon monoxide poisoning is the most common type of fatal air poisoning in many countries.[28] Carbon monoxide is colorless, ... Carbon monoxide has been proposed for use as a fuel on Mars. Carbon monoxide/oxygen engines have been suggested for early ...
Pages in category "Carbon monoxide". The following 20 pages are in this category, out of 20 total. This list may not reflect ... Retrieved from "https://en.wikipedia.org/w/index.php?title=Category:Carbon_monoxide&oldid=607196306" ... Carbon Monoxide All Fuels Action Forum. *Carbon monoxide-releasing molecules. *Carbon-monoxide dehydrogenase (cytochrome b-561) ...
... information about the dangers of carbon monoxide poisoning and how to avoid it ... Carbon monoxide is a gas that is produced when fossil fuels such as coal, natural gas and oil are burned. In only minutes, ... When you breathe carbon monoxide, it enters the bloodstream and cuts off delivery of oxygen to the bodys organs and tissues. ... The first symptoms of carbon monoxide poisoning may be headache, dizziness, confusion, fatigue, and nausea. As more of this gas ...
In the home, heating and cooking equipment that burn fuel are potential sources of carbon monoxide. Vehicles or generators ... carbon monoxide is an odorless, colorless gas created when fuels (such as gasoline, wood, coal, natural gas, propane, oil, and ... running in an attached garage can also produce dangerous levels of carbon monoxide. ... Carbon Monoxide: Invisible Killer Video. Show NFPA®s Carbon Monoxide: Invisible Killer Video in your community and help people ...
... and tobacco smoke all contribute to carbon monoxide intoxication - the l ... Public interest in the health impacts of carbon monoxide (CO) has been increasing rapidly during the past decade. And rightly ... Public interest in the health impacts of carbon monoxide (CO) has been increasing rapidly during the past decade. And rightly ... and tobacco smoke all contribute to carbon monoxide intoxication - the l ...
Carbon Monoxide Poisoning from Camping Equipment (pdf). A safety alert discussing carbon monoxide (CO) poisoning from camping ... Reviews sources of carbon monoxide (CO) and clues to a possible carbon monoxide problem in the home. ... Inspect, Detect and Protect Against Carbon Monoxide Poisoning (En Español). Protect your family from carbon monoxide poisoning ... Responding to Residential Carbon Monoxide Incidents (pdf). A guide to first responders on dealing with incidents of carbon ...
Carbon Monoxide. Technical Reports. 10/11/2019 Non-Fire Carbon Monoxide Deaths Associated with the Use of Consumer Products ... Non-Fire Carbon Monoxide Deaths 10/31/2000 Non-Fire Carbon Monoxide Deaths and Injuries Associated with the Use of Consumer ... Carbon Monoxide Alarm Conformance Testing to UL2034, 2012 Phase I Report 12/04/2013 Carbon Monoxide Alarm Conformance Testing ... Estimating Non-Fatal Carbon Monoxide Poisonings Injuries 09/19/2002 In-Depth Investigations of Carbon Monoxide (CO) Incidents ...
Carbon monoxide, also known as CO, is called the "Invisible Killer" because its a colorless, odorless, poisonous gas. More ... Non-Fire Carbon Monoxide Deaths Associated with the Use of Consumer Products 2012 Annual Estimates ... Non-Fire Carbon Monoxide Deaths Associated with the Use of Consumer Products 2011 Annual Estimates ... Incidents, Deaths, and In-Depth Investigations Associated with Non-Fire Carbon Monoxide from Engine-Driven Generators and Other ...
Carbon Monoxide over Western Russia. This image, made with data from the Terra satellite, shows high levels of carbon monoxide ... Fourteen Years of Carbon Monoxide from MOPITT. Concentrations of the gas, which is produced by burning carbon-based fuels, have ... High levels of carbon monoxide pollution are found around the world, and they result from different types of burning in ... Carbon monoxide molecules can last from a few weeks to several months in the atmosphere, and they travel long distances, ...
... what to do if you suspect a carbon monoxide leak, plus prevention advice. ... Read about carbon monoxide poisoning, including symptoms, causes, signs to look out for, ... Carbon monoxide alarms. Install a carbon monoxide alarm in your home to alert you if theres a carbon monoxide leak. ... What causes carbon monoxide to leak?. Carbon monoxide is produced when fuels such as gas, oil, coal and wood do not burn fully. ...
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Carbon monoxide is known as the silent killer. It is a deadly gas that has no color or smell. Protect yourself and your family ... Carbon Monoxide Poisoning (American Red Cross) - PDF * CPSC Warns of Carbon Monoxide Poisoning with Camping Equipment (Consumer ... Carbon Monoxide Information Center (Consumer Product Safety Commission) * Carbon Monoxide Poisoning (Centers for Disease ... Carbon monoxide poisoning (Medical Encyclopedia) Also in Spanish * Hemoglobin derivatives (Medical Encyclopedia) Also in ...
How can carbon monoxide affect my health?. Exposure to high levels of carbon monoxide can be life-threatening. Carbon monoxide ... What happens to carbon monoxide when it enters the environment?. * Carbon monoxide mainly enters the environment from natural ... What is carbon monoxide?. Carbon monoxide is a colorless, nonirritating, odorless, tasteless gas that is found in both indoor ... How does carbon monoxide affect children?. Breathing high levels of carbon monoxide during pregnancy can cause miscarriage. ...
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Definition Carbon monoxide (CO) poisoning occurs when carbon monoxide [2] gas is inhaled. CO is a colorless, odorless, highly ... Carbon Monoxide Poisoning World of Forensic Science COPYRIGHT 2005 Thomson Gale. Carbon Monoxide Poisoning. Carbon monoxide, ... Carbon monoxide poisoning. Definition. Carbon monoxide (CO) poisoning occurs when carbon monoxide gas is inhaled. CO is a ... Carbon Monoxide Poisoning. Definition. Carbon monoxide (CO) poisoning occurs when carbon monoxide gas is inhaled. CO is a ...
... wwwn.cdc.gov/nndss/conditions/carbon-monoxide-poisoning/case-definition/2019/) * Carbon Monoxide Poisoning , 2014 Case ... wwwn.cdc.gov/nndss/conditions/carbon-monoxide-poisoning/case-definition/2014/) ...
Carbon monoxide, (CO), a highly toxic, colourless, odourless, flammable gas produced industrially for use in the manufacture of ... air pollution: Carbon monoxide. Carbon monoxide is an odourless, invisible gas formed as a result of incomplete combustion. It ... carbon monoxide poisoning; hemoglobinLearn why carbon monoxide is dangerous and how to prevent poisoning.. © American Chemical ... carbon monoxide, CO, and carbon dioxide, CO2. In addition, it also forms carbon suboxide, C3O2. ...
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Carbon Monoxide Questions and Answers Carbon monoxide (CO) is a deadly, colorless, odorless, poisonous gas. This page provides ... Carbon Monoxide Poisoning Prevention- (PDF) Learn how you can protect yourself and your family from harmful exposure to carbon ... CPSC Warns of Carbon Monoxide Poisoning Hazard with Camping Equipment- (PDF) From 2006-2010 there were at least 26 people who ... Learn about the importance of replacing batteries in smoke and carbon monoxide (CO) alarms annually. ...
Carbon monoxide (CO) is a poisonous, colorless, and odorless gas. It may cause sudden illness and possibly death if the patient ... Carbon Monoxide Poisoning. News-Medical. 17 June 2019. ,https://www.news-medical.net/health/Carbon-Monoxide-Poisoning.aspx,. ... Carbon Monoxide Poisoning. News-Medical, viewed 17 June 2019, https://www.news-medical.net/health/Carbon-Monoxide-Poisoning. ... Carbon Monoxide Poisoning. News-Medical. https://www.news-medical.net/health/Carbon-Monoxide-Poisoning.aspx. (accessed June 17 ...
Around 250,000 UK homes are at risk from unacceptably high levels of carbon monoxide, the invisible pollutant called the ... The good news is that the Nest Protect smoke and carbon monoxide alarm helps keep you safe from carbon monoxide build-up in ... Know the risks: the danger of carbon monoxide build-up in our homes is something we should take seriously Credit: Getty ... In the UK, carbon monoxide poisoning in the home accounts for 50 recorded deaths per year, and as many as 4,000 medical visits ...
... breathing British Bureau of Mines burning carbon dioxide carbon-monoxide gas cause cent carbon monoxide chronic carbon-monoxide ... Carbon-monoxide Poisoning. Bulletin of the United States Bureau of Labor Statistics, USA. Bureau of Labor Statistics. Bulletin ... monoxide_Poisoning.html?id=p7UqAAAAYAAJ&utm_source=gb-gplus-shareCarbon-monoxide Poisoning. ... U.S. Government Printing Office, 1922 - Carbon monoxide - 47 pages. 0 Reviewshttps://books.google.com/books/about/Carbon_ ...
What Is Carbon Monoxide?. Carbon monoxide (CO)-known as the "silent killer"-is a colorless, odorless and tasteless gas. The ... Carbon monoxide displaces oxygen in the blood and starves the heart, brain and other vital organs of oxygen. Large amounts of ... Fairfax County Fire and Rescue Services reported high carbon monoxide levels in the building. The first responders were called ... effects of carbon monoxide exposure.. A faulty furnace in a medical building led to 19 people being hospitalized March 24, 2014 ...
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Carbon Monoxide Kills Young Boy At North Carolina Best Western. It was reported this week that a young boy was killed by carbon ... hotels are not often required to have in-room carbon monoxide detectors. If you feel faint, dizzy, or develop severe headaches ... monoxide at a North Carolina Best Western hotel. The room, which was directly above the hotels pool heating equipment, also ...
  • Follow the guidelines below to test your carbon monoxide detectors for accuracy in detecting a poison in your home that can be lethal. (doityourself.com)
  • Make sure all your carbon monoxide detectors are correctly installed, at least one per floor of your house, and more than 10 feet from carbon monoxide sources. (doityourself.com)
  • Therefore, it's important for families to have CO detectors installed on every level of their home, and to know how to prevent carbon monoxide poisoning. (bphc.org)
  • Install carbon monoxide detectors on every level of your home near bedrooms. (bphc.org)
  • Because the gas cannot be seen, smelled, or tasted, it is extremely important that all exterior home heating vents and vehicle tailpipes be cleared completely, and that smoke and carbon monoxide detectors are tested to ensure they have batteries and are working. (somervillema.gov)
  • All Iowans are being reminded about the importance of carbon monoxide detectors after the weekend deaths of two people in Mason City. (radioiowa.com)
  • The town's fire chief Bob Platts says there was a big push to put carbon monoxide detectors in homes 15 to 20 years ago, and if yours is that old, it's overdue to be replaced. (radioiowa.com)
  • Carbon monoxide detectors, similar to smoke detectors, they do have a shelf life and when they're used, they are good for about five years, so I'm guessing there's probably a number of them out there that probably are not up to date," he says. (radioiowa.com)
  • There are a variety of carbon monoxide alarms on the market, including some that are combined with smoke detectors, such as ones that plug into the wall, are battery-operated that can be installed on the ceiling, similar to a smoke alarm or combination alarms that will detect smoke and carbon monoxide. (mindenhills.ca)
  • Regardless of what model you choose, please remember that carbon monoxide alarms, like smoke detectors, need to be replaced regularly. (mindenhills.ca)
  • Industrial Scientific provides single-gas carbon monoxide detectors including the GasBadge® Pro and Tango® TX1, multi-gas detectors including the Ventis® Pro with LENS™ Wireless, and the Radius® BZ1 Area Monitor. (indsci.com)
  • However, there are steps you can take to keep your family safe from carbon monoxide poisoning. (safekids.org)
  • During these miserable weather conditions, it is important to keep in mind the threat of accidental carbon monoxide poisoning. (emaxhealth.com)
  • The Monterey County Health Department would like to remind everyone that the best defense against carbon monoxide poisoning is prevention. (emaxhealth.com)
  • Carbon monoxide poisoning is the most common cause of fatal gassing and is the cause of death in about 90% of fire victims. (encyclopedia.com)
  • Domestic gas supplies still lead to carbon monoxide poisoning, but now due to leakage of products of combustion from a damaged flue or poorly maintained equipment, rather than the fuel itself, since natural gas is carbon monoxide free. (encyclopedia.com)
  • The body compensates for the blood's reduction in oxygen carrying capacity by increasing cardiac output, and in the early stages of carbon monoxide poisoning the heart beats faster and more strongly. (encyclopedia.com)
  • Carbon monoxide poisoning can happen to anyone, although children, the elderly and those with health concerns are especially susceptible. (iastate.edu)
  • Greiner conducted an investigation at a central Iowa home where the family was diagnosed with carbon monoxide poisoning and treated with oxygen. (iastate.edu)
  • Carbon monoxide poisoning is caused when CO builds up in the bloodstream, preventing the body from using oxygen. (bphc.org)
  • A buildup of carbon monoxide (CO) from incomplete combustion of fuels, such as natural gas, and inadequate ventilation can cause carbon monoxide poisoning. (bge.com)
  • To reduce the risk of carbon monoxide poisoning, gas and oil appliance manufacturers recommend a yearly safety check-up. (bge.com)
  • If you notice signs of carbon monoxide poisoning or your detector goes off, get into fresh air immediately and dial 911. (somervillema.gov)
  • Estimates suggest that about one-third of nonfatal cases of carbon monoxide poisoning go undetected and undiagnosed. (cmaj.ca)
  • We present a case of residential carbon monoxide poisoning to illustrate these points and to demonstrate the usefulness of a simple tool based on the CH 2 OPD 2 mnemonic (Community, Home, Hobbies, Occupation, Personal habits, Diet and Drugs) that physicians can use to obtain an environmental exposure history. (cmaj.ca)
  • We outline the clinical management of carbon monoxide poisoning and provide strategies and resources to prevent exposure. (cmaj.ca)
  • A person that has carbon monoxide poisoning can have flu-like symptoms, which can be deceiving in the winter months when many people are already sick. (radioiowa.com)
  • Carbon monoxide cases typically happen when the weather turns cold and people use their furnaces more, but Platts says carbon monoxide poisoning isn't just something that happens in the winter as they've had calls in the every month of the year. (radioiowa.com)
  • Hundreds of people die accidentally every year from carbon monoxide poisoning caused by malfunctioning or improperly used fuel-burning appliances. (molloy.edu)
  • By contrast, the first symptoms of carbon monoxide poisoning, generally slight headaches or flu-like symptoms come on at 100 PPM. (protectyourhome.com)
  • The carbon monoxide detector with ADT® monitoring, when used properly, allows for early detection before carbon monoxide poisoning sets in. (protectyourhome.com)
  • How can I reduce the risk of Carbon Monoxide Poisoning? (fermanaghomagh.com)
  • Carbon monoxide poisoning occurs when a flue or fuel burning appliance such as multi-fuel stove, gas cooker, boiler or open fire has not been properly installed, maintained or is poorly ventilated. (fermanaghomagh.com)
  • To reduce the risk of Carbon Monoxide Poisoning, ensure all fuel burning appliances are properly installed and regularly serviced, at least once per year, by a qualified engineer. (fermanaghomagh.com)
  • Download the leaflet "Reduce the risk of Carbon Monoxide Poisoning in your Home" or for further information regarding reducing the risk of Carbon Monoxide Poisoning contact Fermanagh & Omagh District Council's Environmental Health Department at 0300 303 177. (fermanaghomagh.com)
  • Install carbon monoxide (CO) alarms. (safekids.org)
  • Finally, buy UL listed carbon monoxide alarms and install them near sleeping areas and on every level of your home. (iastate.edu)
  • Platts says improper venting of a heating device led to high levels of carbon monoxide building up in the house. (radioiowa.com)
  • In 2017, poison control centers reported 3,248 cases of carbon monoxide exposure in children 19 and under. (safekids.org)
  • A study published online in the Journal of Occupational and Environmental Hygiene ( JOEH ) outlines hazards posed by carbon monoxide levels on houseboats that use gasoline-powered generators without emission controls, along with controls that are available to reduce exposure to carbon monoxide from the generators. (eurekalert.org)
  • Following the investigations, NIOSH engineers worked with major houseboat and generator manufacturers to develop novel engineering controls to reduce carbon monoxide exposure and poisonings. (eurekalert.org)
  • Read the full study in the Journal of Occupational and Environmental Hygiene and learn more about the health effects associated with carbon monoxide exposure . (eurekalert.org)
  • The physician considers the possibility of exposure to carbon monoxide. (cmaj.ca)
  • 2 Fetuses are especially vulnerable to carbon monoxide exposure. (cmaj.ca)
  • 2 Tobacco smoke elevates this baseline level, 2 , 3 as does exposure to carbon monoxide in the environment ( Table 2 ). (cmaj.ca)
  • 7 The amount of carbon monoxide absorbed depends on the relative concentration in the environment, the duration of exposure and the patient's minute volume. (cmaj.ca)
  • Particularly in danger of carbon monoxide exposure, are workers near or within confined spaces where CO is a byproduct of combustions. (indsci.com)
  • Carbon monoxide consists of one carbon atom and one oxygen atom, connected by a triple bond that consists of two covalent bonds as well as one dative covalent bond. (wikipedia.org)
  • The gas was identified as a compound containing carbon and oxygen by the Scottish chemist William Cruikshank in 1800. (wikipedia.org)
  • The gas was first identified by Joseph Priestley in the eighteenth century, but it was Claude Bernard in 1870 who discovered the affinity between carbon monoxide and haemoglobin which accounts for its deadliness: carboxyhaemoglobin is formed and oxygen transport from the lungs to the tissues disrupted. (encyclopedia.com)
  • In 1895 J. S. Haldane demonstrated that the formation of carboxyhaemoglobin is an equilibrium reaction which depends upon the relative partial pressures of carbon monoxide and oxygen in inspired gas. (encyclopedia.com)
  • Carbon monoxide, like oxygen, has an affinity for iron-containing molecules, but it is about 210 times more effective in binding to iron-containing haemoglobin than oxygen is. (encyclopedia.com)
  • Since air contains 21% oxygen this means that only 0.1% carbon monoxide in the air will eventually lead to 50% of the haemoglobin being combined to form carboxyhaemoglobin. (encyclopedia.com)
  • Muscle myoglobin also binds carbon monoxide, 60 times more effectively than it binds oxygen. (encyclopedia.com)
  • As tissue oxygen level falls, carbon monoxide is able to bind to other iron-containing molecules: notably cytochrome P450, an important drug-metabolizing enzyme, and cytochrome A 3 , an enzyme in the terminal respiratory chain which can also be poisoned by cyanide. (encyclopedia.com)
  • The intense affinity of carbon monoxide for haemoglobin has allowed low concentrations to be used as a marker for measurement of the speed of blood through the lungs and the surface area of the lung available for the transfer of oxygen. (encyclopedia.com)
  • Carbon monoxide reduces the oxygen supply to the brain, causing carbon monoxide intoxication. (iastate.edu)
  • Hemoglobin's affinity for carbon monoxide is 200 to 250 times stronger than its affinity for oxygen. (cmaj.ca)
  • The absorption of carbon monoxide causes a leftward shift in the oxygen-hemoglobin dissociation curve, which results in decreased oxygen-carrying capacity and impaired release of oxygen to the tissues. (cmaj.ca)
  • The Air Force is still investigating the problem, possibly caused by a failure in the OBOGS (Onboard Oxygen Generating System) or the carbon monoxide entering the cockpit . (theaviationist.com)
  • Carbon monoxide is a highly toxic gas which is termed a toxic asphyxiant, meaning it reduces the oxygen transport properties of the blood. (indsci.com)
  • The data were obtained from adiabatic, constant pressure flow reactor experiments for variations in the initial carbon, hydrogen, and oxygen contents of the mixture and also for variations in the initial temperature. (princeton.edu)
  • When we breathe it, carbon monoxide combines with with the red blood cells in the blood and displaces the oxygen our bodies need to survive. (bryantheating.ca)
  • Carbon monoxide combines with the red blood cells over 200 times more easily than oxygen and creates a condition known as carboxyhemoglobin saturation. (bryantheating.ca)
  • Carbon monoxide, instead of oxygen, then enters the vital organs through the bloodstream. (bryantheating.ca)
  • Make sure you have a working carbon monoxide alarm installed on every level of your home, especially around sleeping areas. (safekids.org)
  • Never ignore a carbon monoxide alarm, even if you're unsure of whether the alarm is valid. (doityourself.com)
  • The family installed a carbon monoxide alarm. (iastate.edu)
  • The Ontario government has passed a law, which came into effect on October 15, 2014, that requires a working carbon monoxide alarm in your home, specifically, outside all sleeping areas, if you have a fireplace, any fuel-burning appliance, or an attached garage. (mindenhills.ca)
  • When the carbon monoxide detector senses 70 PPM or more, the sensor's alarm is triggered. (protectyourhome.com)
  • This state of the art carbon monoxide detector is equipped with an 85 decibel alarm at 10 feet. (protectyourhome.com)
  • You should also fit a carbon monoxide alarm. (fermanaghomagh.com)
  • However, a carbon monoxide alarm should not be used as an alternative to ensuring fuel burning appliances are serviced annually. (fermanaghomagh.com)
  • Once you recognize how these reactions are occurring on electrocatalysts, you can control the catalysts structure and operating conditions to produce carbon monoxide efficiently," Singh said. (eurekalert.org)
  • Automobiles, heaters, cooking appliances, and other everyday items that burn fuel produce carbon monoxide when they run. (somervillema.gov)
  • While the energy gained is not enough to allow for growth, the researchers found that carbon monoxide consumption allowed mycobacteria to survive for longer periods of time. (labonline.com.au)
  • Carbon monoxide (CO) is an invisible, odorless, tasteless gas that is produced when a carbon-based fuel burns. (boat-ed.com)
  • Carbon monoxide ( CO ) is a colorless, odorless, and tasteless gas that is slightly less dense than air. (wikipedia.org)
  • Carbon monoxide is a poisonous and odorless gas that does not irritate, but can kill a person in minutes. (emaxhealth.com)
  • Deadly fumes from vehicle exhaust include carbon monoxide (CO), a colorless, odorless, tasteless, and non-irritating byproduct of incomplete combustion. (iastate.edu)
  • The study began in 2000 when NIOSH received a request from the U.S. Department of the Interior (DOI) and the National Park Service to conduct a health hazard evaluation after carbon monoxide-related poisonings were identified on and around houseboats. (eurekalert.org)
  • Did you know that carbon monoxide related poisonings increase by 10% during winter months? (molloy.edu)
  • Readily absorbed through the lungs, carbon monoxide binds to hemoglobin as carboxyhemoglobin (COHb). (cmaj.ca)
  • Fetal hemoglobin has a higher affinity than adult hemoglobin for carbon monoxide, and therefore fetal COHb levels may significantly exceed maternal levels. (cmaj.ca)
  • Carbon monoxide is a poisonous and very dangerous gas because you can't smell or taste it. (mindenhills.ca)
  • Carbon Monoxide is a highly poisonous gas which has no smell, colour or taste. (fermanaghomagh.com)
  • Carbon Monoxide is a poisonous gas that is colorless as well as odourless. (marksductcleaning.com.au)
  • This pair of images shows levels of carbon monoxide at the atmospheric pressure level of 700 millibars (roughly 12,000 feet in altitude) over the continent of South America, as observed by the Measurements Of Pollution In The Troposphere (MOPITT) sensor flying aboard NASA's Terra spacecraft. (nasa.gov)
  • In the lefthand image (March 3), notice the fairly low levels of carbon monoxide over the entire continent. (nasa.gov)
  • The generally higher carbon monoxide levels as compared to March are both the result of South American fire emissions and the transport of carbon monoxide across the Atlantic Ocean from widespread biomass burning over Southern Africa. (nasa.gov)
  • To confirm that a digital readout CO detector is detecting carbon monoxide, test it with a substance that will emit low levels of the gas, such as a lit cigarette or a lit incense wand. (doityourself.com)
  • At any time of the year, carbon monoxide is referred to as "the silent killer" because it can't be seen or smelled, but at high levels it can kill a person in minutes. (molloy.edu)
  • Have a energy audit of your home done every five to ten years - not only will it identify carbon monoxide leaks (even at low levels,) but an audit can also lower your utility bills by identifying was of improving your home's energy performance. (molloy.edu)
  • Our state of the art carbon monoxide detector will alert your family when unsafe carbon monoxide levels have been reached. (protectyourhome.com)
  • Install certified carbon monoxide warning devices in hallways outside bedrooms. (emaxhealth.com)
  • The 'afterdamp' occurring in such situations is a mixture of carbon dioxide and carbon monoxide. (encyclopedia.com)
  • The catalytic converter is cold and not converting deadly carbon monoxide (CO) to carbon dioxide (CO2). (iastate.edu)
  • Researchers at the University of Illinois at Chicago and the Joint Center for Artificial Photosynthesis have determined how electrocatalysts can convert carbon dioxide to carbon monoxide using water and electricity. (eurekalert.org)
  • The electrochemical reduction of carbon dioxide to fuels is a subject of considerable interest because it offers a means for storing electricity from energy sources such as wind and solar radiation in the form of chemical bonds," said Meenesh Singh, assistant professor of chemical engineering and lead author on the study published in the journal Proceedings of the National Academy of Sciences . (eurekalert.org)
  • During his postdoctoral research at the University of California, Berkeley, Singh studied artificial photosynthesis and was part of a team that developed artificial leaves that, when exposed to direct sunlight, were capable of converting carbon dioxide to fuels. (eurekalert.org)
  • and a continuum model for transport of species in the electrolyte to learn precisely how carbon dioxide can be electrochemically reduced through a catalyst, in this case silver, and made into carbon monoxide. (eurekalert.org)
  • This is the first time, Singh said, that scientists have predicted quantitatively from first principles, the current density of carbon monoxide and hydrogen as a function of applied potential and pressure of carbon dioxide. (eurekalert.org)
  • Electrocatalysts such as gold, silver, zinc, palladium and gallium are known to yield mixtures of carbon dioxide and hydrogen at various ratios depending on the applied voltage, Singh said. (eurekalert.org)
  • Gold and silver exhibit the highest activity towards carbon dioxide reduction, and since silver is more abundant and less expensive than gold, "silver is the more promising electrocatalyst for large-scale production of carbon monoxide," he said. (eurekalert.org)
  • The steady-state kinetics of the reduction of nitrogen dioxide (NO 2 ) with carbon monoxide (CO) on a polycrystalline platinum foil have been investigated using reactant pressures between 1 × 10 -7 and 5 × 10 -6 Torr. (princeton.edu)
  • At temperatures less than 400 K, the primary products formed are carbon dioxide (CO 2 ) and nitric oxide (NO). The CO 2 formation rate at temperatures less than 400 K is at least an order of magnitude greater for this reaction than for those of either CO + O 2 or CO + NO under similar reaction conditions. (princeton.edu)
  • Wickham, DT & Koel, BE 1988, ' Steady-state kinetics of the catalytic reduction of nitrogen dioxide by carbon monoxide on platinum ', Journal of Catalysis , vol. 114, no. 2, pp. 207-216. (princeton.edu)
  • You can test a carbon monoxide detector to ensure it can identify the level of carbon monoxide (CO) in the air, measured in parts per million (ppm). (doityourself.com)
  • The ADT® monitored carbon monoxide detector is different from the competition because it communicates with the home security panel and alerts ADT® monitoring of increased level of carbon monoxide. (protectyourhome.com)
  • Motor vehicle exhaust is the most common outdoor source of carbon monoxide. (cmaj.ca)
  • As you move the cigarette or wand within eight inches of the CO detector, the digital display should change to register the presence of carbon monoxide. (doityourself.com)
  • The oxidized form was shown to react reversibly with cyanide, and the reduced form was shown to react reversibly with alkyl halides: cyanide inactivated the enzyme only in the absence of carbon monoxide, and alkyl halides inactivated it only in the presence of carbon monoxide. (asm.org)
  • The study, conducted by researchers at the National Institute for Occupational Safety and Health (NIOSH), found that uncontrolled generators routinely emit carbon monoxide concentrations well above NIOSH's immediately dangerous to life or health (IDLH) value of 1200 parts per million. (eurekalert.org)
  • Houseboats that exhaust uncontrolled generator combustion gases beneath or near the rear deck indicated that extremely hazardous carbon monoxide concentrations can accumulate in that area," said Captain Ronald M. Hall, MS, CIH, CSP, the deputy branch chief in the Engineering and Physical Hazards Branch in the NIOSH Division of Applied Research and Technology in Cincinnati, Ohio. (eurekalert.org)
  • Between 2004 and 2005, the two largest manufacturers of marine generators introduced low carbon monoxide emission models, which resulted in reductions of up to 99 percent in carbon monoxide concentrations in occupied areas on and around the boats. (eurekalert.org)
  • Occasionally, however, in low concentrations of the order of 0.05% carbon monoxide, the bird adapted to the gas and the workers could collapse while the bird remained well. (encyclopedia.com)
  • Concentrations so large fill the garage with carbon monoxide in a very short time even with the door open. (iastate.edu)
  • At high concentrations, such as produced in the exhaust of a cold engine, carbon monoxide intoxication occurs in only a few minutes, leaving those poisoned incapable of realizing they are poisoned, and unable to protect themselves. (iastate.edu)
  • Repeating the sequence of events, Greiner found that after only two minutes of warm-up in the opened garage, carbon monoxide concentrations rose to a lethal 575 parts per million. (iastate.edu)
  • Eight hours later carbon monoxide concentrations still remained above the allowable 9 ppm. (iastate.edu)
  • The endogenously produced gaseous molecule carbon monoxide is able to promote organ protection after ischemia-reperfusion injuries (IRI). (biomedcentral.com)
  • That's right, the increased use of home heating systems, use of gasoline-powered generators during and after winter storms, and indoor use space heaters all contribute to the increased dangers of carbon monoxide exposures during winter. (molloy.edu)
  • Carbon monoxide is a sneaky killer, a silent killer. (iastate.edu)
  • Carbon monoxide is a silent killer that can cause death in minutes - but while it is lethal for humans, Monash University microbiologists have found that some pathogens utilise this deadly gas as an energy source when other nutrients are not available. (labonline.com.au)
  • Carbon monoxide oxidation by cell suspensions was found (i) to be dependent on pyruvate, (ii) to be inhibited by alkyl halides and arsenate, and (iii) to stimulate CO 2 reduction to acetate. (asm.org)
  • Cell extracts catalyzed the oxidation of carbon monoxide with methyl viologen at specific rates up to 10 μmol min −1 mg of protein −1 (35°C, pH 7.2). (asm.org)
  • The catalytic mechanism of carbon monoxide oxidation was "ping-pong," indicating that the enzyme catalyzing carbon monoxide oxidation can be present in an oxidized and a reduced form. (asm.org)
  • The findings are interpreted to indicate that carbon monoxide oxidation in the two bacteria is catalyzed by a corrinoid enzyme and that in vivo the reaction is coupled with the reduction of CO 2 to acetate. (asm.org)
  • In particular, the results define explosion limit temperatures for near stoichiometric mixtures of CO/H 2 O/O 2 and H 2 /O 2 systems at atmospheric pressure without the presence of surfaces and also demonstrate the complex relationship between water vapor concentration and the carbon monoxide oxidation rate. (princeton.edu)
  • In particular, the results define explosion limit temperatures for near stoichiometric mixtures of CO/H2O/O2and H2/O2systems at atmospheric pressure without the presence of surfaces and also demonstrate the complex relationship between water vapor concentration and the carbon monoxide oxidation rate. (princeton.edu)
  • External (with a few exceptions) charcoal or wood gas generators were fitted, and the mixture of atmospheric nitrogen, hydrogen, carbon monoxide, and small amounts of other gases produced by gasification was piped to a gas mixer. (wikipedia.org)
  • Since they are product gases -- carbon monoxide and hydrogen are insoluble in aqueous electrolytes -- they can be readily separated as synthesis gas and converted into fuels such as methanol, dimethyl ether, or a mixture of hydrocarbons. (eurekalert.org)
  • When microbial cells are starved of their preferred energy sources, one way they subsist is by scavenging gases such as carbon monoxide," said Monash PhD student Paul Cordero, co-lead author on the study. (labonline.com.au)
  • Our immune cells actually make small amounts of carbon monoxide, which the bacterium may be able to use as an energy supply while dormant. (labonline.com.au)
  • Carbon monoxide (CO) is produced when fuels such as gas, propane and oil are not burned completely. (bphc.org)
  • Low PPM doses of carbon monoxide can cause headaches and dizziness. (indsci.com)
  • The loud alert is used to notify anyone in your home of carbon monoxide buildup. (protectyourhome.com)
  • The symptoms are often nonspecific or masked by an exacerbation of an underlying illness, such as congestive heart failure, that has been triggered by carbon monoxide inhalation. (cmaj.ca)
  • The impact of carbon monoxide releasing molecules (CORM) regarding inflammation in neuronal tissues has not been studied in detail. (biomedcentral.com)
  • Haldane's interest was stimulated by the problems caused by carbon monoxide in British coal mines. (encyclopedia.com)
  • The important producers of carbon monoxide are industrial processes, heating equipment, accidental fire, cigarettes, and the internal combustion engine. (encyclopedia.com)
  • Carbon monoxide is a byproduct of combustion and will appear naturally in any situation where burning has taken place. (indsci.com)
  • The researchers showed that an enzyme called carbon monoxide dehydrogenase is what allows mycobacteria to obtain energy from this gas. (labonline.com.au)