• Carbon-oxygen bonds are present in these functional groups: Carbon compounds#Carbon-oxygen compounds Carbon-hydrogen bond Carbon-carbon bond Carbon-nitrogen bond Carbon-fluorine bond Silicon-oxygen bond Organic Chemistry John McMurry 2nd Ed.[page needed] Advanced Organic Chemistry Carey, Francis A., Sundberg, Richard J. 5th ed. 2007 Smith, Michael B. (wikipedia.org)
  • Can metal-nitrogen-carbon catalysts satisfy oxygen electrochemistry? (rsc.org)
  • Transition metal-nitrogen-carbon catalysts have been well-established as the most promising alternatives for oxygen reduction reaction catalysis. (rsc.org)
  • The theoretical and atomic-level investigation of their working active sites, insights into their durability, mechanism and bifunctional nature for oxygen electrocatalysis yield further advances aiming at optimizing transition metal-nitrogen-carbon materials for oxygen electrochemistry. (rsc.org)
  • A method for determining the 18O/16O ratio of organic matter composed of carbon, hydrogen, oxygen, and nitrogen is described. (eurekamag.com)
  • Bonds between carbon and other elements such as oxygen and nitrogen are polar. (atheistsforhumanrights.org)
  • The effect of boron and nitrogen (BN) insertion to carbon materials on oxygen reduction reaction (ORR) in fuel cells was investigated. (confex.com)
  • The new ELEMENTRAC ONH-p 2 is a powerful and robust elemental analyzer for measurement of oxygen, nitrogen and hydrogen concentrations in inorganic materials like steel, iron, copper or ceramics. (dksh.com)
  • If, on the other hand, the anomeric carbon of the sugar makes the link with the nitrogen atom of an amine, the bond is referred to as an N-glycosidic bond. (github.io)
  • CO 2 , which are also the predominant nitrogen- and carbon-bearing gases produced by volcanism today. (wikipedia.org)
  • Carbon and oxygen isotopes of cool-water bryozoans from the Great Australian Bight and their paleoenvironmental significance. (tamu.edu)
  • Table 5) Stacked records of stable carbon and oxygen isotopes for Equatorial Atlantic Globigerinoides sacculifer. (pangaea.de)
  • In this study, we address the relation between carbon and oxygen stable isotopes of cork rings and precipitation and temperature, in two distinct locations of southwestern Portugal-the (wetter) Tagus basin peneplain and the (drier) Grândola mountains. (unl.pt)
  • In this study we assess the integrated biostratigraphic and chemostratigraphic framework for the Ordovician sequence at Lanna, utilizing trilobites and conodonts coupled with bulk-rock carbon and oxygen isotopes (δ 13 C carb and δ 18 O carb ). (lu.se)
  • We determined the effect of nocturnal low-flow oxygen (NLFO) on arterial oxygen saturation (SaO2), transcutaneous PCO2 (TcPCO2), and sleep quality in 10 patients with cystic fibrosis (CF) and severe stable chronic obstructive pulmonary disease (COPD). (nih.gov)
  • Pulse oximeters measure functional oxygen saturation , ie. (macrumors.com)
  • A fingertip pulse CO-oximeter can be used to measure heart rate and oxygen saturation, and COHgb levels. (cdc.gov)
  • A fingertip pulse multiple wavelength spectrophotometer, or pulse CO-oximeter, can be used to measure heart rate, oxygen saturation, and COHgb levels, but any suspicion of CO poisoning should be confirmed with a COHgb level by multiple wavelength spectrophotometer (CO-oximeter). (cdc.gov)
  • Our large, KF-115 Kevlar cylinder holds a whopping 3257 liters of oxygen, nearly 5 times the capacity of our largest aluminum cylinder and empty, weighs only twice as much. (mhoxygen.com)
  • To support the absorption of oxygen and release of carbon dioxide, about 5 to 8 liters (about 1.3 to 2.1 gallons) of air per minute are brought in and out of the lungs, and about three tenths of a liter (about three tenths of a quart) of oxygen is transferred from the alveoli to the blood each minute, even when the person is at rest. (msdmanuals.com)
  • During exercise, it is possible to breathe in and out more than 100 liters (about 26 gallons) of air per minute and extract 3 liters (a little less than 1 gallon) of oxygen from this air per minute. (msdmanuals.com)
  • Hydrothermal Synthesis of Metal-Polyphenol Coordination Crystals and Their Derived Metal/N-doped Carbon Composites for Oxygen Electrocatalysis. (bvsalud.org)
  • In carboxylic acids, esters and anhydrides, each carbonyl carbon atom forms one double bond and one single bond to oxygen. (wikipedia.org)
  • In carbonate esters and carbonic acid, the carbonyl carbon forms one double bond and two single bonds to oxygen. (wikipedia.org)
  • The most common glycosidic bonds connecting monosaccharide units are O-glycosidic bonds in which the oxygen from a hydroxyl group becomes linked to the carbonyl carbon. (github.io)
  • The limited expression of many named 'carbon isotope excursions' (CIEs) in the studied interval indicate that they are artefacts of local overprinting rather than reflective of changes to the global carbon cycle. (lu.se)
  • An oxocarbon or oxide of carbon is a chemical compound consisting only of carbon and oxygen. (atheistsforhumanrights.org)
  • Anelli S., Baiutti F., Hornés A., Bernadet L., Torrell M., Tarancón A. "Improved mesostructured oxygen electrodes for highly performing solid oxide cells for co-electrolysis of steam and carbon dioxide" Journal of Materials Chemistry A 7, 48, pp. 27458 - 27468. (irec.cat)
  • Yes, gold can react with oxygen to form gold oxide. (answers.com)
  • The high dissolved oxygen content in SFR will lead to oxide blockage or pipe corrosion. (ramon.com.cn)
  • Perovskite oxides are active room-temperature bifunctional oxygen electrocatalysts in alkaline media, capable of performing the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) with lower combined overpotentials relative to their precious metal counterparts. (osti.gov)
  • Here, the oxygen evolution reaction (OER) has broad applications in electrochemical devices, but it often requires expensive and scarce Ir-based catalysts in acid electrolyte. (osti.gov)
  • Efficient electrocatalysts for the oxygen evolution reaction (OER) are paramount to the development of electrochemical devices for clean energy and fuel conversion. (nature.com)
  • The metal (Co or Fe)-natural abundant polyphenol ( tannin ) coordination crystals are a renewable source for the fabrication of metal / carbon composites as a nonprecious- metal catalyst, which show high catalytic performance for both oxygen reduction reaction and oxygen evolution reaction. (bvsalud.org)
  • The result shows potentials of BN co-doped activated carbon as a cost-effective alternative for oxygen reduction reaction in fuel cell. (confex.com)
  • The phase reaction, sintering behavior and oxygen permeability of the membrane are systematically investigated using XRD, ESEM, EDX and oxygen permeation studies. (edu.au)
  • In neutral compounds, an oxygen atom can form up to two single bonds or one double bond with carbon, while a carbon atom can form up to four single bonds or two double bonds with oxygen. (wikipedia.org)
  • 343, 410 A carbon atom forms one single bond to oxygen in alcohols, ethers and peroxides, two in acetals,: 524 : 35, 340-348 three in ortho esters,: 345 and four in orthocarbonates. (wikipedia.org)
  • In furans, the oxygen atom contributes to pi-electron delocalization via its filled p-orbital and hence furans are aromatic. (wikipedia.org)
  • However carbon dioxide could also be lost through other processes - such as pickup by solar wind and photochemical processes that can kick off a carbon or an oxygen atom. (abc.net.au)
  • An O-glycosidic bond is formed when the anomeric carbon of the sugar establishes a link with the oxygen atom in the hydroxyl group of the alcohol. (github.io)
  • A molecule of carbon monoxide (CO) has one carbon atom and one oxygen atom. (windows2universe.org)
  • form close to oxygen isotopic equilibrium with their ambient water. (tamu.edu)
  • Therefore, changes in glacial-interglacial oceanographic conditions are preserved in the oxygen isotopic profiles. (tamu.edu)
  • Carbon isotopic records of nutrient-depleted surface water place constraints on the past fertility of the oceans and on past atmospheric pCO2 levels. (pangaea.de)
  • We aimed at assessing whether the two climatic factors affect cork-ring isotopic composition under contrasting conditions of water availability, and, therefore, if carbon and oxygen signatures in cork can reflect tree functional (physiological and structural) responses to stressful conditions, which might be aggravated by climate change. (unl.pt)
  • The combination of CCS and biomass combustion would result in a reduction of atmospheric CO 2 , or net negative emissions, as plant growth is a form of sequestration of atmospheric carbon. (chalmers.se)
  • Significant exposures to carbon disulfide occur primarily in occupational settings. (cdc.gov)
  • Carbon monoxide poisonings resulting from open air exposures to operating motorboats--Lake Havasu City, Arizona, 2003. (medscape.com)
  • Is gold reactive to oxygen? (answers.com)
  • The sudden injection of highly reactive free oxygen, toxic to the then-mostly anaerobic biosphere, may have caused the extinction of many existing organisms on Earth - then mostly archaeal colonies that used retinal to utilize green-spectrum light energy and power a form of anoxygenic photosynthesis (see Purple Earth hypothesis ). (wikipedia.org)
  • A two process model is envisaged: (a) initiation of reactive oxygen species by moderate noise exposure and (b) promotion of oxidative stress through disrupting intrinsic antioxidant defenses. (cdc.gov)
  • 16-22 Carbon-oxygen bonds are found in many inorganic compounds such as carbon oxides and oxohalides, carbonates and metal carbonyls, and in organic compounds such as alcohols, ethers, carbonyl compounds and oxalates. (wikipedia.org)
  • This clearance response occurred only in the light and it was related to gradients of inorganic carbon that formed in the agar layer. (uea.ac.uk)
  • These results are discussed with reference to the roles of inorganic carbon and O2 in cyanobacterial metabolism and it is concluded that chemotactic behaviour may be important in movements within the photic zone of sediment environments. (uea.ac.uk)
  • Chemical-looping combustion (CLC) and chemical looping gasification (CLG) are two promising technologies for conversion of biomass to heat and power or syngas/methane with carbon capture. (chalmers.se)
  • Simple mixing of the precursors with AC and subsequent annealing were used to synthesize the carbon materials with respect to varying temperatures (700 o C, 850 o C, and 1000 o C) and mixing ratios (10:1, 1:1). (confex.com)
  • Children exposed to the same levels of carbon disulfide as adults may receive larger doses because they have relatively greater lung surface area: body weight ratios and higher minute volume: weight ratios. (cdc.gov)
  • Carbon forms a double bond to oxygen in aldehydes, ketones and acyl halides. (wikipedia.org)
  • Carbon and oxygen form terminal double bonds in functional groups collectively known as carbonyl compounds to which belong such compounds as ketones, esters, carboxylic acids and many more. (wikipedia.org)
  • Unintentional carbon monoxide-related deaths in the United States, 1979 through 1988. (medscape.com)
  • Oxygen has 6 valence electrons and prefers to either share two electrons in bonding with carbon, leaving the 4 nonbonding electrons in 2 lone pairs :O: or to share two pairs of electrons to form the carbonyl functional group. (atheistsforhumanrights.org)
  • For example: carbon does not form ionic bonds because it has 4 valence electrons, half of an octet. (atheistsforhumanrights.org)
  • Paints and solvents can be hazardous because they contain volatile organic compounds (VOCs), carbon-containing compounds that evaporate readily. (cdc.gov)
  • The materials were also impregnated with alkali (K) in order to gauge possible catalytic effects and also to establish a better understanding of the general behavior of oxygen carriers with alkali, an important component in biomass and biomass waste streams and often a precursor for high-temperature corrosion. (chalmers.se)
  • As their name suggests, regulators "regulate" the pressure of the outgoing oxygen from a cylinder, both reducing the pressure and keeping it from fluctuating. (mhoxygen.com)
  • Odors of pure or commercial grades of carbon disulfide usually provide adequate warning of hazardous concentrations. (cdc.gov)
  • According to stellar evolution models, WDs with masses lower than about 0.45 M⊙ are helium (He) WDs, and those with masses between 0.45 and 1.05 M⊙ are carbon-oxygen (CO) WDs. (phys.org)
  • Compounds with formal C≡O triple bonds do not exist except for carbon monoxide, which has a very short, strong bond (112.8 pm), and acylium ions, R-C≡O+ (typically 110-112 pm). (wikipedia.org)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Chalcogen (i.e. (justia.com)
  • Justia Patents Organic Compounds -- Part Of The Class 532-570 Series Patents Organic Compounds (class 532, Subclass 1) Heterocyclic Carbon Compounds Containing A Hetero Ring Having Chalcogen (i.e. (justia.com)
  • The conversion of CO, H 2 , CH 4 , and C 2 H 4 was investigated in the temperature interval 800-950 °C. The reactivity, or oxygen transfer rate, was highest for the manganese ores, followed by the LD slag. (chalmers.se)
  • Therefore, the patient cannot benefit from most of the positive effects of HBOT, which are systemic or occur at a level deeper than topical oxygen can penetrate (see Hyperbaric Physics and Physiology section below). (medscape.com)
  • Inhalation is the major route of exposure to carbon disulfide. (cdc.gov)
  • Significant inhalation or dermal exposure to carbon disulfide would most likely be encountered in an industrial environment, particularly during rayon production. (cdc.gov)
  • Its effects are caused not only by impaired oxygen delivery but also by disrupting oxygen utilization and respiration at the cellular level, particularly in high-oxygen demand organs (i.e., heart and brain). (cdc.gov)
  • The large shrinkage of BSCF substrate and the diffusion of compositional elements from BSCF substrate into the PrCe layer promote the densification of PrCe layer at a temperature as low as 1100 °C. The as-fabricated bilayer membrane exhibits not only high oxygen permeation flux, reaching 1.6 mL cm-2 min-1 at 850 °C, but also favorable permeation stability even after the introduction of 10% CO2 into helium sweep gas. (edu.au)
  • If a large proportion of your Hb is in a form that can't carry oxygen (eg. (macrumors.com)
  • For example, the delivery of oxygen to the muscle cells throughout the body depends not only on the lungs but also on the ability of the blood to carry oxygen and on the ability of the circulation to transport blood to muscle. (msdmanuals.com)
  • Do masks, any kind, cause low oxygen levels? (wsbtv.com)
  • There is no evidence that a mask reduces oxygen levels in a person's blood. (wsbtv.com)
  • Couple that with the fact that most of us don't wear masks for hours at a time, and it makes it doubtful that carbon dioxide could build up to dangerous levels. (wsbtv.com)
  • Exposure times to oxygen at different depths of water (and, hence, different levels of pressure) were quantified and tested based on time to convulsions. (medscape.com)
  • Most people can smell carbon disulfide vapors at levels as low as 0.02 to 0.1ppm. (cdc.gov)
  • In addition, they may be exposed to higher levels than adults in the same location because of their short stature and the higher levels of carbon disulfide found nearer to the ground. (cdc.gov)
  • To compare exhaled carbon monoxide levels with self-reports among university students in the Islamic Republic of Iran. (who.int)
  • Smoking status was compared and then correlated with the resultant carbon monoxide levels at a cutoff of 6 ppm. (who.int)
  • Significant correlations were obtained between the exhaled carbon monoxide levels of the smoker and nonsmoker groups (P (who.int)
  • Then the blood is pumped through the pulmonary artery to the lungs, where it picks up oxygen and releases carbon dioxide. (msdmanuals.com)
  • This treatment may also be used to provide enough oxygen to the lung during a procedure called whole lung lavage, which is used to clean an entire lung in people with certain medical conditions, like pulmonary alveolar proteinosis . (medlineplus.gov)
  • Carbon-Oxygen Lyases" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus, MeSH (Medical Subject Headings) . (rush.edu)