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In chemistry , the oxidation state , or oxidation number , is the hypothetical charge of an atom if all of its bonds to other atoms are fully ionic . It describes the degree of oxidation (loss of electrons ) of an atom in a chemical compound . Conceptually, the oxidation state may be positive, negative or zero. Beside ... | https://en.wikipedia.org/wiki/Oxidation_state |
Oxidation state localized orbitals (OSLOs) is a new concept used to determine the oxidation states of each fragment for the coordination complexes . [ 1 ] Based on the result of density functional theory (DFT), all the occupied molecular orbitals are remixed to get the oxidation state localized orbitals. These orbitals... | https://en.wikipedia.org/wiki/Oxidation_state_localized_orbitals |
Oxidation with dioxiranes refers to the introduction of oxygen into organic substrates using dioxiranes . Dioxiranes are well known for epoxidations (synthesis of epoxides from alkenes ). [ 1 ] Dioxiranes oxidize other unsaturated functionality, heteroatoms, and alkane C-H bonds. [ 2 ] Dioxiranes are metal-free oxidant... | https://en.wikipedia.org/wiki/Oxidation_with_dioxiranes |
Oxidation induction time or OIT is a standardized test performed in a DSC which measures the level of thermal stabilization of the material tested. The time between melting and the onset of decomposition in isothermal conditions is measured. The atmosphere is nitrogen up to melting and then oxygen. The typical temperat... | https://en.wikipedia.org/wiki/Oxidative-induction_time |
Oxidative/fermentation glucose test (OF glucose test) is a biological technique. It was developed in 1953 by Hugh and Leifson to be utilized in microbiology to determine the way a microorganism metabolizes a carbohydrate such as glucose (dextrose). [ 1 ] OF-glucose deeps contain glucose as a carbohydrate, peptones , br... | https://en.wikipedia.org/wiki/Oxidative/fermentation_glucose_test |
Oxidative addition and reductive elimination are two important and related classes of reactions in organometallic chemistry . [ 1 ] [ 2 ] [ 3 ] [ 4 ] Oxidative addition is a process that increases both the oxidation state and coordination number of a metal centre. Oxidative addition is often a step in catalytic cycles ... | https://en.wikipedia.org/wiki/Oxidative_addition |
Oxidative carbonylation is a class of reactions that use carbon monoxide in combination with an oxidant to generate esters and carbonate esters . These transformations utilize transition metal complexes as homogeneous catalysts . [ 1 ] Many of these reactions employ palladium catalysts. Mechanistically, these reactio... | https://en.wikipedia.org/wiki/Oxidative_carbonylation |
Oxidative coupling in chemistry is a coupling reaction of two molecular entities through an oxidative process . Usually oxidative couplings are catalysed by a transition metal complex like in classical cross-coupling reactions, although the underlying mechanism is different due to the oxidation process that requires a... | https://en.wikipedia.org/wiki/Oxidative_coupling |
The oxidative coupling of methane ( OCM ) is a potential chemical reaction studied in the 1980s for the direct conversion of natural gas , primarily consisting of methane , into value-added chemicals. Although the reaction would have strong economics if practicable, no effective catalysts are known, and thermodynamic ... | https://en.wikipedia.org/wiki/Oxidative_coupling_of_methane |
Oxidative deamination is a form of deamination that generates α-keto acids and other oxidized products from amine-containing compounds, and occurs primarily in the liver . [ 1 ] Oxidative deamination is stereospecific, meaning it contains different stereoisomers as reactants and products; this process is either catalyz... | https://en.wikipedia.org/wiki/Oxidative_deamination |
Silver nanoparticles (AgNPs) act primarily through a process known as oxidative dissolution , wherein Ag+ ions are released through an oxidative mechanism. AgNPs have potentially vast applications within the fields of medicine, science, and food and drug industries due to their antimicrobial properties, low cytotoxici... | https://en.wikipedia.org/wiki/Oxidative_dissolution_of_silver_nanoparticles |
Oxidative stress reflects an imbalance between the systemic manifestation of reactive oxygen species and a biological system's ability to readily detoxify the reactive intermediates or to repair the resulting damage. [ 1 ] Disturbances in the normal redox state of cells can cause toxic effects through the production of... | https://en.wikipedia.org/wiki/Oxidative_stress |
Oxide dispersion strengthened alloys ( ODS ) are alloys that consist of a metal matrix with small oxide particles dispersed within it. They have high heat resistance, strength, and ductility . Alloys of nickel are the most common but includes iron aluminum alloys. [ 1 ]
Applications include high temperature turbine bl... | https://en.wikipedia.org/wiki/Oxide_dispersion-strengthened_alloy |
The expansive force of rusting , which may be called oxide jacking or rust burst , is a phenomenon that can cause damage to structures made of stone, masonry, concrete or ceramics, and reinforced with metal components. A definition is "the displacement of building elements due to the expansion of iron and steel produc... | https://en.wikipedia.org/wiki/Oxide_jacking |
An oxidizing agent (also known as an oxidant , oxidizer , electron recipient , or electron acceptor ) is a substance in a redox chemical reaction that gains or " accepts "/"receives" an electron from a reducing agent (called the reductant , reducer , or electron donor ). In other words, an oxidizer is any substance tha... | https://en.wikipedia.org/wiki/Oxidizing_agent |
In biochemistry , an oxidoreductase is an enzyme that catalyzes the transfer of electrons from one molecule, the reductant , also called the electron donor , to another, the oxidant , also called the electron acceptor . This group of enzymes usually utilizes NADP+ or NAD+ as cofactors . [ 1 ] [ 2 ] Transmembrane oxidor... | https://en.wikipedia.org/wiki/Oxidoreductase |
In organic chemistry , an oxime is an organic compound belonging to the imines , with the general formula RR’C=N−OH , where R is an organic side-chain and R' may be hydrogen , forming an aldoxime , or another organic group , forming a ketoxime . O-substituted oximes form a closely related family of compounds. Amidoxime... | https://en.wikipedia.org/wiki/Oxime |
An oxo-Diels–Alder reaction (also called an oxa-Diels–Alder reaction ) is an organic reaction and a variation of the Diels–Alder reaction in which a suitable diene reacts with an aldehyde to form a dihydropyran ring. This reaction is of some importance to synthetic organic chemistry.
The oxo-DA reaction was first repo... | https://en.wikipedia.org/wiki/Oxo-Diels–Alder_reaction |
Oxo-degradation refers to the breakdown mechanism caused by heat, light or oxygen on plastics that contain additives that accelerate the process of breaking them into smaller fragments called microplastics . [ 1 ] These plastics contrast biodegradable or compostable plastics, which decompose at the molecular or polymer... | https://en.wikipedia.org/wiki/Oxo-degradation |
In organic chemistry , an oxocarbenium ion (alternatively spelled oxacarbenium ) is a chemical species characterized by a central sp 2 -hybridized atom of carbon , a substituent atom of oxygen , and an overall positive charge that is delocalized between the central carbon and oxygen atoms ( R 2 [CO] + R ). [ 1 ] An oxo... | https://en.wikipedia.org/wiki/Oxocarbenium |
Oxodipine is a calcium channel blocker .
This biochemistry article is a stub . You can help Wikipedia by expanding it . | https://en.wikipedia.org/wiki/Oxodipine |
The oxoeicosanoids are nonclassic eicosanoids , derived from arachidonic acid (AA).
For example, Lipoxygenase produces 5-HETE from AA; a dehydrogenase then produces 5-oxo-eicosatetraenoic acid , an oxoeicosanoid, from 5-HETE.
They are similar to the leukotrienes in their actions, but they act via a different receptor.... | https://en.wikipedia.org/wiki/Oxoeicosanoid |
Oxophilicity is the tendency of certain chemical compounds to form oxides by hydrolysis or abstraction of an oxygen atom from another molecule, often from organic compounds. The term is often used to describe metal centers, commonly the early transition metals such as titanium , niobium , and tungsten . Oxophilicity is... | https://en.wikipedia.org/wiki/Oxophilicity |
Oxopropalines are novel cytocidal beta-carbolines isolated from Streptomyces . [ 1 ]
This biochemistry article is a stub . You can help Wikipedia by expanding it . | https://en.wikipedia.org/wiki/Oxopropaline |
In organic chemistry , the oxy-Cope rearrangement is a chemical reaction . It involves reorganization of the skeleton of certain unsaturated alcohols. It is a variation of the Cope rearrangement in which 1,5-dien-3-ols are converted to unsaturated carbonyl compounds by a mechanism typical for such a [3,3]- sigmatropic ... | https://en.wikipedia.org/wiki/Oxy-Cope_rearrangement |
Oxy-fuel combustion is the process of burning a fuel using pure oxygen, or a mixture of oxygen and recirculated flue gas, instead of air. Since the nitrogen component of air is not heated, fuel consumption is reduced, and higher flame temperatures are possible. Historically, the primary use of oxy-fuel combustion has b... | https://en.wikipedia.org/wiki/Oxy-fuel_combustion_process |
Oxy-fuel welding (commonly called oxyacetylene welding , oxy welding , or gas welding in the United States) and oxy-fuel cutting are processes that use fuel gases (or liquid fuels such as gasoline or petrol, diesel, biodiesel, kerosene , etc) and oxygen to weld or cut metals. French engineers Edmond Fouché and Charles ... | https://en.wikipedia.org/wiki/Oxy-fuel_welding_and_cutting |
An oxyanion , or oxoanion , is an ion with the generic formula A x O z − y (where A represents a chemical element and O represents an oxygen atom). Oxyanions are formed by a large majority of the chemical elements . [ 1 ] The formulae of simple oxyanions are determined by the octet rule . The corresponding oxyacid of ... | https://en.wikipedia.org/wiki/Oxyanion |
In chemistry , oxychlorination is a process for generating the equivalent of chlorine gas (Cl 2 ) from hydrogen chloride and oxygen . [ 1 ] This process is attractive industrially because hydrogen chloride is less expensive than chlorine. [ 2 ]
The reaction is usually initiated by copper(II) chloride (CuCl 2 ), which ... | https://en.wikipedia.org/wiki/Oxychlorination |
Oxyfedrine , sold under the brand names Ildamen and Myofedrin among others, is a sympathomimetic agent and coronary vasodilator which is used in the treatment of coronary heart disease , angina pectoris , and acute myocardial infarction . [ 1 ] [ 3 ] [ 4 ] [ 5 ] [ 6 ] [ 7 ] It is taken by mouth or intravenously . [ 1 ]... | https://en.wikipedia.org/wiki/Oxyfedrine |
Oxygen-17 ( 17 O ) is a low-abundance, natural, stable isotope of oxygen (0.0373% in seawater; approximately twice as abundant as deuterium ).
As the only stable isotope of oxygen possessing a nuclear spin (+ 5 ⁄ 2 ) and a favorable characteristic of field-independent relaxation in liquid water, 17 O enables NMR studi... | https://en.wikipedia.org/wiki/Oxygen-17 |
Oxygen-18 ( 18 O , Ω [ 1 ] ) is a natural, stable isotope of oxygen and one of the environmental isotopes .
18 O is an important precursor for the production of fluorodeoxyglucose (FDG) used in positron emission tomography (PET). Generally, in the radiopharmaceutical industry, enriched water ( H 2 Ω ) is bombarded wit... | https://en.wikipedia.org/wiki/Oxygen-18 |
The oxygen-evolving complex (OEC), also known as the water-splitting complex , is a water-oxidizing enzyme involved in the photo-oxidation of water during the light reactions of photosynthesis . [ 3 ] OEC is surrounded by 4 core proteins of photosystem II at the membrane-lumen interface. The mechanism for splitting wat... | https://en.wikipedia.org/wiki/Oxygen-evolving_complex |
Oxygen balance ( OB , OB% , or Ω ) is an expression that is used to indicate the degree to which an explosive can be oxidized , [ 1 ] to determine whether the molecules of explosive substance or mixture contains enough oxygen to fully oxidize the other atoms in the molecules. For example, fully oxidized carbon forms ca... | https://en.wikipedia.org/wiki/Oxygen_balance |
An oxygen bar is an establishment, or part of one, that sells oxygen for recreational use. Individual scents may be added to enhance the experience. The flavors in an oxygen bar come from bubbling oxygen through bottles containing aromatic solutions before it reaches the nostrils: most bars use food-grade particles to ... | https://en.wikipedia.org/wiki/Oxygen_bar |
In respiratory physiology , the oxygen cascade describes the flow of oxygen from air to mitochondria , where it is consumed in aerobic respiration to release energy. [ 1 ] Oxygen flows from areas with high partial pressure of oxygen (PO 2 , also known as oxygen tension ) to areas of lower PO 2 .
Air is typically aroun... | https://en.wikipedia.org/wiki/Oxygen_cascade |
Oxygen compatibility is the issue of compatibility of materials for service in high concentrations of oxygen . It is a critical issue in space, aircraft, medical, underwater diving and industrial applications.
Aspects include effects of increased oxygen concentration on the ignition and burning of materials and compon... | https://en.wikipedia.org/wiki/Oxygen_compatibility |
An oxygen concentrator is a device that concentrates the oxygen from a gas supply (typically ambient air) by selectively removing nitrogen to supply an oxygen-enriched product gas stream. They are used industrially, to provide supplemental oxygen at high altitudes, and as medical devices for oxygen therapy . [ 1 ]
Oxy... | https://en.wikipedia.org/wiki/Oxygen_concentrator |
The oxygen cycle refers to the various movements of oxygen through the Earth 's atmosphere ( air ), biosphere ( flora and fauna ), hydrosphere ( water bodies and glaciers ) and the lithosphere (the Earth's crust ). The oxygen cycle demonstrates how free oxygen is made available in each of these regions, as well as how ... | https://en.wikipedia.org/wiki/Oxygen_cycle |
An oxygen diffusion-enhancing compound is any substance that increases the availability of oxygen in body tissues by influencing the molecular structure of water in blood plasma and thereby promoting the movement ( diffusion ) of oxygen through plasma. [ 1 ] Oxygen diffusion-enhancing compounds have shown promise in th... | https://en.wikipedia.org/wiki/Oxygen_diffusion-enhancing_compound |
In biochemistry , the oxygen effect refers to a tendency for increased radiosensitivity of free living cells and organisms in the presence of oxygen than in anoxic or hypoxic conditions, where the oxygen tension is less than 1% of atmospheric pressure (i.e., <1% of 101.3 kPa, 760 mmHg or 760 torr).
The oxygen effect h... | https://en.wikipedia.org/wiki/Oxygen_effect |
The oxygen enhancement ratio (OER) or oxygen enhancement effect in radiobiology refers to the enhancement of therapeutic or detrimental effect of ionizing radiation due to the presence of oxygen . This so-called oxygen effect [ 1 ] is most notable when cells are exposed to an ionizing radiation dose .
The OER is tradi... | https://en.wikipedia.org/wiki/Oxygen_enhancement_ratio |
Oxygen evolution is the chemical process of generating diatomic oxygen (O 2 ) by a chemical reaction , usually from water , the most abundant oxide compound in the universe . Oxygen evolution on Earth is effected by biotic oxygenic photosynthesis , photodissociation , hydroelectrolysis , and thermal decomposition of va... | https://en.wikipedia.org/wiki/Oxygen_evolution |
The oxygen minimum zone ( OMZ ), sometimes referred to as the shadow zone , is the zone in which oxygen saturation in seawater in the ocean is at its lowest. This zone occurs at depths of about 200 to 1,500 m (700–4,900 ft), depending on local circumstances. OMZs are found worldwide, typically along the western coast o... | https://en.wikipedia.org/wiki/Oxygen_minimum_zone |
Oxygen monofluoride is an unstable binary inorganic compound radical of fluorine and oxygen with the chemical formula OF. [ 1 ] [ 2 ] [ 3 ] This is the simplest of many oxygen fluorides .
Oxygen- and fluorine-containing radicals like O 2 F and OF occur in the atmosphere. These, along with other halogen radicals, have ... | https://en.wikipedia.org/wiki/Oxygen_monofluoride |
Oxygen plants are industrial systems designed to generate oxygen. They typically use air as a feedstock and separate it from other components of air using pressure swing adsorption or membrane separation techniques. Such plants are distinct from cryogenic separation plants which separate and capture all the components ... | https://en.wikipedia.org/wiki/Oxygen_plant |
In chemistry , the oxygen reduction reaction refers to the reduction half reaction whereby O 2 is reduced to water or hydrogen peroxide. In fuel cells, the reduction to water is preferred because the current is higher. The oxygen reduction reaction is well demonstrated and highly efficient in nature. [ 1 ] [ 2 ]
The ... | https://en.wikipedia.org/wiki/Oxygen_reduction_reaction |
Oxygen saturation (symbol S O 2 ) is a relative measure of the concentration of oxygen that is dissolved or carried in a given medium as a proportion of the maximal concentration that can be dissolved in that medium at the given temperature. It can be measured with a dissolved oxygen probe such as an oxygen sensor or ... | https://en.wikipedia.org/wiki/Oxygen_saturation |
An oxygen tank is an oxygen storage vessel, which is either held under pressure in gas cylinders , referred to in the industry as high pressure oxygen cylinders , or as liquid oxygen in a cryogenic storage tank . [ citation needed ]
Oxygen tanks are used to store gas for:
Breathing oxygen is delivered from the storag... | https://en.wikipedia.org/wiki/Oxygen_tank |
In the liquid fuel industry, oxygenates are hydrocarbon -derived fuel additives containing at least one oxygen atom [ 1 ] to promote complete combustion . [ 2 ] Absent oxygenates, fuel combustion is usually incomplete , and the exhaust stream pollutes the air with carbon monoxide , soot particles, aromatic and polyarom... | https://en.wikipedia.org/wiki/Oxygenate |
Oxygenated treatment (OT) is a technique used to reduce corrosion in a boiler and its associated feedwater system in flow-through boilers.
With oxygenated treatment, oxygen is injected into the feedwater to keep the oxygen level between 30 and 50 ppb. OT programs are most commonly used in supercritical (i.e. >3250psi)... | https://en.wikipedia.org/wiki/Oxygenated_treatment |
In chemistry , a sample's oxygen–argon ratio (or oxygen/argon ratio ) is a comparison between the concentrations of oxygen (O 2 ) and the noble gas argon (Ar), either in air or dissolved in a liquid such as seawater. The two gases have very similar physical properties such as solubility and diffusivity , as well as a s... | https://en.wikipedia.org/wiki/Oxygen–argon_ratio |
The oxygen–hemoglobin dissociation curve , also called the oxyhemoglobin dissociation curve or oxygen dissociation curve ( ODC ), is a curve that plots the proportion of hemoglobin in its saturated (oxygen-laden) form on the vertical axis against the prevailing oxygen tension on the horizontal axis. This curve is an im... | https://en.wikipedia.org/wiki/Oxygen–hemoglobin_dissociation_curve |
Oxyhydrogen is a mixture of hydrogen (H 2 ) and oxygen (O 2 ) gases. This gaseous mixture is used for torches to process refractory materials and was the first [ 1 ] gaseous mixture used for welding . Theoretically, a ratio of 2:1 hydrogen:oxygen is enough to achieve maximum efficiency; in practice a ratio 4:1 or 5:1 i... | https://en.wikipedia.org/wiki/Oxyhydrogen |
Oxyntomodulin (often abbreviated OXM ) is a naturally occurring 37-amino acid peptide hormone found in the colon , produced by the oxyntic ( fundic ) cells of the oxyntic (fundic) mucosa . It has been found to suppress appetite .
The mechanism of action of oxyntomodulin is not well understood. It is known to bind bot... | https://en.wikipedia.org/wiki/Oxyntomodulin |
Oxyphil cells are found in oncocytomas of the kidney , endocrine glands , and salivary glands . [ 1 ]
This article related to pathology is a stub . You can help Wikipedia by expanding it . | https://en.wikipedia.org/wiki/Oxyphil_cell_(pathology) |
In chemistry, oxypnictides are a class of materials composed of oxygen , a pnictogen (group-V, especially phosphorus and arsenic) and one or more other elements. Although this group of compounds has been recognized since 1995, [ 1 ] interest in these compounds increased dramatically after the publication of the superco... | https://en.wikipedia.org/wiki/Oxypnictide |
Oxyrrhis marina is a species of heterotrophic dinoflagellate with flagella that is widely distributed in the world's oceans.
This protozoan species has an asymmetrical oval shape to its single-celled body. [ 1 ] It has been likened to a rugby ball . [ 2 ] The cell usually measures between 20 and 30 micrometers, but it... | https://en.wikipedia.org/wiki/Oxyrrhis_marina |
Oxyselenides are a group of chemical compounds that contain oxygen and selenium atoms (Figure 1). Oxyselenides can form a wide range of structures in compounds containing various transition metals , and thus can exhibit a wide range of properties. Most importantly, oxyselenides have a wide range of thermal conductivity... | https://en.wikipedia.org/wiki/Oxyselenide |
Özgur Baris Akan is a Professor with the Department of Electrical and Electronics Engineering and the Director of Next-generation and Wireless Communications Laboratory (NWCL) at the University of Cambridge and Koç University in Istanbul, Turkey. He was named Fellow of the Institute of Electrical and Electronics Engine... | https://en.wikipedia.org/wiki/Ozgur_B._Akan |
The term ozogamicin in the names of monoclonal antibodies or antibody-drug conjugates indicates that they are linked to a cytotoxic agent from the class of calicheamicins . [ 2 ] | https://en.wikipedia.org/wiki/Ozogamicin |
Ozone ( / ˈ oʊ z oʊ n / ) (or trioxygen ) is an inorganic molecule with the chemical formula O 3 . It is a pale blue gas with a distinctively pungent smell. It is an allotrope of oxygen that is much less stable than the diatomic allotrope O 2 , breaking down in the lower atmosphere to O 2 ( dioxygen ). Ozone is formed ... | https://en.wikipedia.org/wiki/Ozone |
Cracks can be formed in many different elastomers by ozone attack, and the characteristic form of attack of vulnerable rubbers is known as ozone cracking . The problem was formerly very common, especially in tires , but is now rarely seen in those products owing to preventive measures.
However, it does occur in many o... | https://en.wikipedia.org/wiki/Ozone_cracking |
An ozone monitor is electronic equipment that monitors for ozone concentrations in the air. The instrument may be used to monitor ozone values for industrial applications or to determine the amount of ambient ozone at ground level and determine whether these values violate National Ambient Air Quality Standards (NAAQS)... | https://en.wikipedia.org/wiki/Ozone_monitor |
The ozone– oxygen cycle is the process by which ozone is continually regenerated in Earth 's stratosphere , converting ultraviolet radiation (UV) into heat . In 1930 Sydney Chapman resolved the chemistry involved. The process is commonly called the Chapman cycle by atmospheric scientists.
Most of the ozone production ... | https://en.wikipedia.org/wiki/Ozone–oxygen_cycle |
Ozonia is a multinational water treatment equipment manufacturer headquartered in Zürich , Switzerland .
It operates under the company, Degrémont , [ 2 ] which is a subsidiary of Suez Environnement , [ 3 ] a French-based utility company which operates largely in the water treatment and waste management sectors.
Ozoni... | https://en.wikipedia.org/wiki/Ozonia |
Ozonide is the polyatomic anion O − 3 . Cyclic organic compounds formed by the addition of ozone ( O 3 ) to an alkene are also called ozonides.
Inorganic ozonides [ 1 ] are dark red salts. The anion has the bent shape of the ozone molecule.
Inorganic ozonides are formed by burning potassium , rubidium , or caesium in... | https://en.wikipedia.org/wiki/Ozonide |
The Ozsváth–Schücking metric , or the Ozsváth–Schücking solution , is a vacuum solution of the Einstein field equations . The metric was published by István Ozsváth and Engelbert Schücking in 1962. [ 1 ] It is noteworthy among vacuum solutions for being the first known solution that is stationary , globally defined, an... | https://en.wikipedia.org/wiki/Ozsváth–Schücking_metric |
Formaldehyde ( / f ɔːr ˈ m æ l d ɪ h aɪ d / ⓘ for- MAL -di-hide , US also / f ə r -/ ⓘ fər- ) ( systematic name methanal ) is an organic compound with the chemical formula CH 2 O and structure H−CHO , more precisely H 2 C=O . The compound is a pungent, colourless gas that polymerises spontaneously into paraformaldehyde... | https://en.wikipedia.org/wiki/O⚌CH2 |
Dinitrogen tetroxide Dinitrogen trioxide Nitric oxide Nitrous oxide
Nitrogen dioxide is a chemical compound with the formula NO 2 . One of several nitrogen oxides , nitrogen dioxide is a reddish-brown gas. It is a paramagnetic , bent molecule with C 2v point group symmetry . Industrially, NO 2 is an intermediate in t... | https://en.wikipedia.org/wiki/O⚍N⚍O |
Dinitrogen tetroxide Dinitrogen trioxide Nitric oxide Nitrous oxide
Nitrogen dioxide is a chemical compound with the formula NO 2 . One of several nitrogen oxides , nitrogen dioxide is a reddish-brown gas. It is a paramagnetic , bent molecule with C 2v point group symmetry . Industrially, NO 2 is an intermediate in t... | https://en.wikipedia.org/wiki/O⚍N⚎O |
Ozone ( / ˈ oʊ z oʊ n / ) (or trioxygen ) is an inorganic molecule with the chemical formula O 3 . It is a pale blue gas with a distinctively pungent smell. It is an allotrope of oxygen that is much less stable than the diatomic allotrope O 2 , breaking down in the lower atmosphere to O 2 ( dioxygen ). Ozone is formed ... | https://en.wikipedia.org/wiki/O⚍O⚍O |
Ozone ( / ˈ oʊ z oʊ n / ) (or trioxygen ) is an inorganic molecule with the chemical formula O 3 . It is a pale blue gas with a distinctively pungent smell. It is an allotrope of oxygen that is much less stable than the diatomic allotrope O 2 , breaking down in the lower atmosphere to O 2 ( dioxygen ). Ozone is formed ... | https://en.wikipedia.org/wiki/O⚍O⚎O |
Dinitrogen tetroxide Dinitrogen trioxide Nitric oxide Nitrous oxide
Nitrogen dioxide is a chemical compound with the formula NO 2 . One of several nitrogen oxides , nitrogen dioxide is a reddish-brown gas. It is a paramagnetic , bent molecule with C 2v point group symmetry . Industrially, NO 2 is an intermediate in t... | https://en.wikipedia.org/wiki/O⚎N⚍O |
Dinitrogen tetroxide Dinitrogen trioxide Nitric oxide Nitrous oxide
Nitrogen dioxide is a chemical compound with the formula NO 2 . One of several nitrogen oxides , nitrogen dioxide is a reddish-brown gas. It is a paramagnetic , bent molecule with C 2v point group symmetry . Industrially, NO 2 is an intermediate in t... | https://en.wikipedia.org/wiki/O⚎N⚎O |
Ozone ( / ˈ oʊ z oʊ n / ) (or trioxygen ) is an inorganic molecule with the chemical formula O 3 . It is a pale blue gas with a distinctively pungent smell. It is an allotrope of oxygen that is much less stable than the diatomic allotrope O 2 , breaking down in the lower atmosphere to O 2 ( dioxygen ). Ozone is formed ... | https://en.wikipedia.org/wiki/O⚎O⚍O |
Ozone ( / ˈ oʊ z oʊ n / ) (or trioxygen ) is an inorganic molecule with the chemical formula O 3 . It is a pale blue gas with a distinctively pungent smell. It is an allotrope of oxygen that is much less stable than the diatomic allotrope O 2 , breaking down in the lower atmosphere to O 2 ( dioxygen ). Ozone is formed ... | https://en.wikipedia.org/wiki/O⚎O⚎O |
P(doom) is a term in AI safety that refers to the probability of existentially catastrophic outcomes (or "doom") as a result of artificial intelligence . [ 1 ] [ 2 ] The exact outcomes in question differ from one prediction to another, but generally allude to the existential risk from artificial general intelligence . ... | https://en.wikipedia.org/wiki/P(doom) |
P -Chiral phosphines are organophosphorus compounds of the formula PRR′R″, where R, R′, R″ = H, alkyl, aryl, etc. They are a subset of chiral phosphines, a broader class of compounds where the stereogenic center can reside at sites other than phosphorus. P-chirality exploits the high barrier for inversion of phosphin... | https://en.wikipedia.org/wiki/P-Chiral_phosphine |
p -Dimethylaminocinnamaldehyde ( DMACA ) is an aromatic hydrocarbon. It is used in an acidic solution to detect indoles.
The DMACA is any of a number of acidified DMACA solutions:
It is primarily used as a histological dye used to detect indoles , particularly for production in cells. It is used for the rapid identif... | https://en.wikipedia.org/wiki/P-Dimethylaminocinnamaldehyde |
8.5 ( acetonitrile ) [ 4 ]
Para -Toluenesulfonic acid ( PTSA , pTSA , or p TsOH ) or tosylic acid ( TsOH ) is an organic compound with the formula CH 3 C 6 H 4 SO 3 H . It is a white extremely hygroscopic solid that is soluble in water, alcohols , and other polar organic solvents. [ 6 ] The CH 3 C 6 H 4 SO 2 group is ... | https://en.wikipedia.org/wiki/P-Toluenesulfonic_acid |
This page provides supplementary chemical data on p -xylene .
The handling of this chemical may incur notable safety precautions. It is highly recommend that you seek the Material Safety Datasheet ( MSDS ) for this chemical from a reliable source and follow its directions.
Table data obtained from CRC Handbook of Che... | https://en.wikipedia.org/wiki/P-Xylene_(data_page) |
In mathematics , p -adic Teichmüller theory describes the "uniformization" of p -adic curves and their moduli , generalizing the usual Teichmüller theory that describes the uniformization of Riemann surfaces and their moduli. It was introduced and developed by Shinichi Mochizuki ( 1996 , 1999 ).
The first problem is t... | https://en.wikipedia.org/wiki/P-adic_Teichmüller_theory |
In mathematics , p -adic analysis is a branch of number theory that studies functions of p -adic numbers . Along with the more classical fields of real and complex analysis , which deal, respectively, with functions on the real and complex numbers, it belongs to the discipline of mathematical analysis .
The theory of ... | https://en.wikipedia.org/wiki/P-adic_analysis |
In mathematics, a p-adic distribution is an analogue of ordinary distributions (i.e. generalized functions) that takes values in a ring of p -adic numbers .
If X is a topological space , a distribution on X with values in an abelian group G is a finitely additive function from the compact open subsets of X to G . Equ... | https://en.wikipedia.org/wiki/P-adic_distribution |
In mathematics , the p -adic gamma function Γ p is a function of a p -adic variable analogous to the gamma function . It was first explicitly defined by Morita (1975) , though Boyarsky (1980) pointed out that Dwork (1964) implicitly used the same function. Diamond (1977) defined a p -adic analog G p of log Γ. Overholtz... | https://en.wikipedia.org/wiki/P-adic_gamma_function |
p -adic quantum mechanics is a collection of related research efforts in quantum physics that replace real numbers with p -adic numbers . Historically, this research was inspired by the discovery that the Veneziano amplitude of the open bosonic string , which is calculated using an integral over the real numbers, can b... | https://en.wikipedia.org/wiki/P-adic_quantum_mechanics |
In cellular biology , P-bodies , or processing bodies , are distinct foci formed by phase separation within the cytoplasm of a eukaryotic cell consisting of many enzymes involved in mRNA turnover . [ 1 ] P-bodies are highly conserved structures and have been observed in somatic cells originating from vertebrates and in... | https://en.wikipedia.org/wiki/P-bodies |
In mathematics , in particular algebraic topology , a p - compact group is a homotopical version of a compact Lie group , but with all the local structure concentrated at a single prime p . This concept was introduced in Dwyer & Wilkerson (1994) , making precise earlier notions of a mod p finite loop space. A p-compact... | https://en.wikipedia.org/wiki/P-compact_group |
The p-i concept refers to the pharmacological interaction of drugs with immune receptors. It explains a form of drug hypersensitivity , namely T cell stimulation, which can lead to various acute inflammatory manifestations such as exanthems , eosinophilia and systemic symptoms , Stevens–Johnson syndrome , toxic epiderm... | https://en.wikipedia.org/wiki/P-i_mechanism |
p-nuclei ( p stands for proton -rich) are certain proton-rich, naturally occurring isotopes of some elements between selenium and mercury inclusive which cannot be produced in either the s- or the r-process .
The classical, ground-breaking works of Burbidge, Burbidge, Fowler and Hoyle (1957) [ 1 ] and of A. G. W. Came... | https://en.wikipedia.org/wiki/P-nuclei |
The term p-process ( p for proton ) is used in two ways in the scientific literature concerning the astrophysical origin of the elements ( nucleosynthesis ). Originally it referred to a proton capture process which was proposed to be the source of certain, naturally occurring, neutron-deficient isotopes of the elements... | https://en.wikipedia.org/wiki/P-process |
In mathematics a P-recursive equation is a linear equation of sequences where the coefficient sequences can be represented as polynomials . P-recursive equations are linear recurrence equations (or linear recurrence relations or linear difference equations) with polynomial coefficients. These equations play an importan... | https://en.wikipedia.org/wiki/P-recursive_equation |
The P-type ATPases , also known as E 1 -E 2 ATPases , are a large group of evolutionarily related ion and lipid pumps that are found in bacteria , archaea , and eukaryotes . [ 1 ] P-type ATPases are α-helical bundle primary transporters named based upon their ability to catalyze auto- (or self-) phosphorylation (hence ... | https://en.wikipedia.org/wiki/P-type_ATPase |
In mathematical analysis , p -variation is a collection of seminorms on functions from an ordered set to a metric space , indexed by a real number p ≥ 1 {\displaystyle p\geq 1} . p -variation is a measure of the regularity or smoothness of a function. Specifically, if f : I → ( M , d ) {\displaystyle f:I\to (M,d)} , wh... | https://en.wikipedia.org/wiki/P-variation |
There are two kinds of seismic body waves in solids, pressure waves (P-waves) and shear waves. In linear elasticity , the P-wave modulus M {\displaystyle M} , also known as the longitudinal modulus , or the constrained modulus , is one of the elastic moduli available to describe isotropic homogeneous materials.
It is ... | https://en.wikipedia.org/wiki/P-wave_modulus |
The phosphate/oxygen ratio , or P/O ratio , refers to the amount of ATP produced from the movement of two electrons through a defined electron transport chain , terminated by reduction of an oxygen atom. [ 1 ]
The P/O ratio is dependent on the number of hydrogen ions transported outward across an electrochemical gradi... | https://en.wikipedia.org/wiki/P/O_ratio |
A P1-derived artificial chromosome, or PAC, is a DNA construct derived from the DNA of P1 bacteriophages and Bacterial artificial chromosome . It can carry large amounts (about 100–300 kilobases ) of other sequences for a variety of bioengineering purposes in bacteria . It is one type of the efficient cloning vector us... | https://en.wikipedia.org/wiki/P1-derived_artificial_chromosome |
2A5E , 1A5E , 1BI7 , 1DC2 ,%%s 1A5E , 1BI7 , 1DC2 , 2A5E
1029
12578
ENSG00000147889
ENSMUSG00000044303
P42771 Q8N726
P51480 Q64364
NM_001363763
NM_001040654 NM_009877
NP_478102.2
NP_001035744 NP_034007 NP_034007.1
p16 (also known as p16 INK4a , cyclin-dependent kinase inhibitor 2A , CDKN2A , multiple tumor s... | https://en.wikipedia.org/wiki/P16 |
P1 is a temperate bacteriophage that infects Escherichia coli and some other bacteria. When undergoing a lysogenic cycle the phage genome exists as a plasmid in the bacterium [ 1 ] unlike other phages (e.g. the lambda phage ) that integrate into the host DNA. P1 has an icosahedral head containing the DNA attached to a... | https://en.wikipedia.org/wiki/P1_phage |
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