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An air preheater is any device designed to heat air before another process (for example, combustion in a boiler), with the primary objective of increasing the thermal efficiency of the process. They may be used alone or to replace a recuperative heat system or to replace a steam coil.
In particular, this article descr... | https://en.wikipedia.org/wiki/Air_preheater |
An air purge system is used to flush electrical control equipment with clean air before it is turned on. This ensures that the functionality of the equipment is not affected or damaged by the contaminants from the surrounding environment.
Air purge systems are employed for control and analytic technology that is expos... | https://en.wikipedia.org/wiki/Air_purge_system |
An air purifier or air cleaner is a device which removes contaminants from the air in a room to improve indoor air quality . These devices are commonly marketed as being beneficial to allergy sufferers and asthmatics , and at reducing or eliminating second-hand tobacco smoke .
The commercially graded air purifiers are... | https://en.wikipedia.org/wiki/Air_purifier |
Air sensitivity is a term used, particularly in chemistry , to denote the reactivity of chemical compounds with some constituent of air . Most often, reactions occur with atmospheric oxygen (O 2 ) or water vapor (H 2 O), [ 1 ] although reactions with the other constituents of air such as carbon monoxide (CO), carbon di... | https://en.wikipedia.org/wiki/Air_sensitivity |
An air separation plant separates atmospheric air into its primary components, typically nitrogen and oxygen , and sometimes also argon and other rare inert gases .
The most common method for air separation is fractional distillation . Cryogenic air separation units (ASUs) are built to provide nitrogen or oxygen and o... | https://en.wikipedia.org/wiki/Air_separation |
Air showers are specialized enclosed antechambers which are incorporated as entryways of cleanrooms and other controlled environments to reduce particle contamination . [ 1 ] Air showers utilize high-pressure, HEPA - or ULPA - filtered air to remove dust, fibrous lint , and other contaminants from personnel or object s... | https://en.wikipedia.org/wiki/Air_shower_(room) |
An air sock is a textile or fabric duct used for draught-free air distribution and delivery of conditioned air as an alternative to traditional spiral or rectangular steel ducts with grilles and diffusers. Fabric ducts are usually cheaper in material cost, do not require additional diffusers, and can be installed more ... | https://en.wikipedia.org/wiki/Air_sock |
An air source heat pump ( ASHP ) is a heat pump that can absorb heat from air outside a building and release it inside; it uses the same vapor-compression refrigeration process and much the same equipment as an air conditioner , but in the opposite direction. ASHPs are the most common type of heat pump and, usually bei... | https://en.wikipedia.org/wiki/Air_source_heat_pump |
Air sparging , also known as in situ air stripping [ 1 ] and in situ volatilization is an in situ remediation technique, used for the treatment of saturated soils and groundwater contaminated by volatile organic compounds (VOCs) like petroleum hydrocarbons , [ 2 ] a widespread problem for the ground water and soil heal... | https://en.wikipedia.org/wiki/Air_sparging |
Air stripping is the transferring of volatile components of a liquid into an air stream. It is an environmental engineering technology used for the purification of groundwaters and wastewaters containing volatile compounds.
Volatile compounds have relatively high vapor pressure and low aqueous solubility characterize... | https://en.wikipedia.org/wiki/Air_stripping |
An air track is a scientific device used to study motion in a low friction environment. Its name comes from its structure: air is pumped through a hollow track with fine holes all along the track that allows specially fitted air track cars to glide relatively friction-free. Air tracks are usually triangular in cross-se... | https://en.wikipedia.org/wiki/Air_track |
Airbag launching refers to a method to launch vessels with marine air bags. It is a methodology for ship launching utilizing air bags. [ 1 ]
The Xiao Qinghe shipyard launched a tank barge with marine airbags on January 20, 1981, and it is known as the first use of marine airbags.
This kind of ship launching method ha... | https://en.wikipedia.org/wiki/Airbag_launching |
An airborne collision avoidance system ( ACAS , usually pronounced as ay-kas ) operates independently of ground-based equipment and air traffic control in warning pilots of the presence of other aircraft that may present a threat of collision. If the risk of collision is imminent, the system recommends a maneuver that ... | https://en.wikipedia.org/wiki/Airborne_collision_avoidance_system |
The airborne visible/infrared imaging spectrometer (AVIRIS) is the second in a series of imaging spectrometer instruments developed at the Jet Propulsion Laboratory (JPL) for Earth remote sensing . This instrument uses scanning optics and four spectrometers to image a 614- pixel swath simultaneously in 224 adjacent spe... | https://en.wikipedia.org/wiki/Airborne_visible/infrared_imaging_spectrometer |
The airborne wind shear detection and alert system , fitted in an aircraft , detects and alerts the pilot both visually and aurally of a wind shear condition. A reactive wind shear detection system is activated by the aircraft flying into an area with a wind shear condition of sufficient force to pose a hazard to the ... | https://en.wikipedia.org/wiki/Airborne_wind_shear_detection_and_alert_system |
The Aircraft Research Association (ARA) is an aerodynamics research institute in the north-west of Bedford .
The association was founded on 22 January 1952. [ 1 ] 14 main British aviation companies funded £1.25m to build a large wind tunnel .
It was first proposed in 1953 to build the site at Stevington , north-east ... | https://en.wikipedia.org/wiki/Aircraft_Research_Association |
The aircraft design process is a loosely defined method used to balance many competing and demanding requirements to produce an aircraft that is strong, lightweight, economical and can carry an adequate payload while being sufficiently reliable to safely fly for the design life of the aircraft. Similar to, but more exa... | https://en.wikipedia.org/wiki/Aircraft_design_process |
Aircraft dope is a plasticised lacquer that is applied to fabric-covered aircraft . It tightens and stiffens fabric stretched over airframes, which renders them airtight and weatherproof, increasing their durability and lifespan. [ 1 ] [ 2 ] The technique has been commonly applied to both full-size and flying models of... | https://en.wikipedia.org/wiki/Aircraft_dope |
Aircraft maintenance is the performance of tasks required to ensure the continuing airworthiness of an aircraft or aircraft part , including overhaul, inspection, replacement, defect rectification, and the embodiment of modifications, compliance with airworthiness directives and repair . [ 1 ] [ 2 ]
The maintenance of... | https://en.wikipedia.org/wiki/Aircraft_maintenance |
A periscope is an instrument for observation over, around or through an object, obstacle or condition that prevents direct line-of-sight observation from an observer's current position. [ 1 ] [ 2 ]
In its simplest form, it consists of an outer case with mirrors at each end set parallel to each other at a 45° angle. Th... | https://en.wikipedia.org/wiki/Aircraft_periscope |
An aircraft in flight is free to rotate in three dimensions: yaw , nose left or right about an axis running up and down; pitch , nose up or down about an axis running from wing to wing; and roll , rotation about an axis running from nose to tail. The axes are alternatively designated as vertical , lateral (or transvers... | https://en.wikipedia.org/wiki/Aircraft_principal_axes |
Airflow, or air flow , is the movement of air. Air behaves in a fluid manner, meaning particles naturally flow from areas of higher pressure to those where the pressure is lower. Atmospheric air pressure is directly related to altitude , temperature , and composition. [ 1 ]
In engineering , airflow is a measurement of... | https://en.wikipedia.org/wiki/Airflow |
Airflow Sciences Corporation ( ASC ) is an engineering consulting company based in Livonia, Michigan, USA that specializes in the design and optimization of equipment and processes involving flow, heat transfer, combustion, and mass transfer. Engineering techniques include Computational Fluid Dynamics (CFD) modeling, ... | https://en.wikipedia.org/wiki/Airflow_Sciences_Corporation |
The mechanical structure of an aircraft is known as the airframe . [ 1 ] This structure is typically considered to include the fuselage , undercarriage , empennage and wings , and excludes the propulsion system . [ 2 ]
Airframe design is a field of aerospace engineering that combines aerodynamics , materials technolo... | https://en.wikipedia.org/wiki/Airframe |
An airlift pump is a pump that has low suction and moderate discharge of liquid and entrained solids. The pump injects compressed air at the bottom of the discharge pipe which is immersed in the liquid. The compressed air mixes with the liquid causing the air-water mixture to be less dense than the rest of the liquid a... | https://en.wikipedia.org/wiki/Airlift_pump |
An airlock [ a ] is a room or compartment which permits passage between environments of differing atmospheric pressure or composition, while minimizing the changing of pressure or composition between the differing environments.
An airlock consists of a chamber with two airtight doors or openings, usually arranged in s... | https://en.wikipedia.org/wiki/Airlock |
Airpush is a private company founded in 2010 that provides bootstrapped mobile advertising platform. [ 1 ] [ 2 ] [ 3 ] [ 4 ] [ 5 ] [ 6 ] [ 7 ] It is known as one of the largest mobile ad platforms with over 120,000 live apps utilizing its SDK . [ 3 ] Airpush is based in Los Angeles , California with offices in Bangalor... | https://en.wikipedia.org/wiki/Airpush |
In manufacturing, an airshaft is a device used for handling winding reels in the processing of web-fed materials, such as continuous-process printing presses . [ 1 ]
Airshafts—also called air expanding shafts —are used in the manufacturing processes for fitting into a core onto which materials such as paper, card and ... | https://en.wikipedia.org/wiki/Airshaft |
Airship (formerly Urban Airship) is a Portland, Oregon -based company that offers marketing and branding services to its clients. Its services enable businesses to create personalized messages that can be delivered to customers through various channels, such as push notifications and SMS messaging. In addition to messa... | https://en.wikipedia.org/wiki/Airship_(company) |
The airspeed indicator ( ASI ) or airspeed gauge is a flight instrument indicating the airspeed of an aircraft in kilometres per hour (km/h), knots (kn or kt), miles per hour (MPH) and/or metres per second (m/s). The recommendation by ICAO is to use km/h , however knots (kt) is currently the most used unit. The ASI mea... | https://en.wikipedia.org/wiki/Airspeed_indicator |
The Airy processes are a family of stationary stochastic processes that appear as limit processes in the theory of random growth models and random matrix theory . They are conjectured to be universal limits describing the long time, large scale spatial fluctuations of the models in the (1+1)-dimensional KPZ universalit... | https://en.wikipedia.org/wiki/Airy_process |
Air–fuel ratio ( AFR ) is the mass ratio of air to a solid, liquid, or gaseous fuel present in a combustion process. The combustion may take place in a controlled manner such as in an internal combustion engine or industrial furnace, or may result in an explosion (e.g., a dust explosion ). The air–fuel ratio determine... | https://en.wikipedia.org/wiki/Air–fuel_ratio |
An aisle is a linear space for walking with rows of non-walking spaces on both sides. Aisles with seating on both sides can be seen in airplanes, in buildings such as churches , cathedrals , synagogues , meeting halls , parliaments , courtrooms , theatres , and in long passenger vehicles. An aisle floor may be level or... | https://en.wikipedia.org/wiki/Aisle |
Aissa Wade is a Professor of Mathematics at the Pennsylvania State University . She was the President of the African Institute for Mathematical Sciences centre in Senegal (from 2016 to 2018).
Wade was born in Dakar , Senegal . [ 1 ] She studied mathematics at Cheikh Anta Diop University and graduated in 1993. [ 2 ] Sh... | https://en.wikipedia.org/wiki/Aissa_Wade |
Aistyonok ( Russian : Аистёнок , Little Stork ; GRAU designation 1L271 ) is a portable counter-battery radar system developed and produced by the state-owned Almaz-Antey corporation for the Russian Armed Forces .
It is a mobile radar for the purpose of detecting position of weapons such as field artillery and anti-air... | https://en.wikipedia.org/wiki/Aistyonok |
Aitken interpolation is an algorithm used for polynomial interpolation that was derived by the mathematician Alexander Aitken . It is similar to Neville's algorithm .
See also Aitken's delta-squared process or Aitken extrapolation .
This polynomial -related article is a stub . You can help Wikipedia by expanding it . | https://en.wikipedia.org/wiki/Aitken_interpolation |
Ajax is a brand of integral engine / compressor manufactured by the original equipment manufacturer, Cooper Machinery Services [1] ). [ 1 ] Ajax is the oldest continuous engine product line manufactured in the United States and has been utilized in the oil and gas industry for 130+ years.
Ajax integral engine-compresso... | https://en.wikipedia.org/wiki/Ajax_Engines |
Ajith Chrysantha Stephen Perera , JP , CChem. , FRSC (29 February 1956 – 29 October 2020) [ 1 ] was a Chartered Chemist by profession, a scholar, a former senior manager in industry, a qualified training instructor, also a former test-match-panel cricket umpire . [ 2 ] [ 3 ]
The international admiration Perera has won... | https://en.wikipedia.org/wiki/Ajith_C._S._Perera |
Ajmalan is a parent hydride used in the IUPAC nomenclature of natural products and also in CAS nomenclature . [ 1 ] It is a 20-carbon alkaloid with six rings and seven chiral centres .
The name is derived from ajmaline , an antiarrhythmic alkaloid isolated from the roots of Rauvolfia serpentina [ 2 ] which is formally... | https://en.wikipedia.org/wiki/Ajmalan |
The Ajtai–Komlós–Tusnády theorem (also known as the AKT optimal matching theorem ) is a result in probabilistic combinatorics . Given two random, distinct sets of points X = ( X 1 , … , X k ) {\displaystyle X=(X_{1},\dots ,X_{k})} and Y = ( Y 1 , … , Y k ) {\displaystyle Y=(Y_{1},\dots ,Y_{k})} in the unit square [ 0 ,... | https://en.wikipedia.org/wiki/Ajtai–Komlós–Tusnády_theorem |
There are several Akabori amino acid reactions , which are named after Shirō Akabori ( Japanese : 赤堀 四郎 ) (1900–1992), a Japanese chemist.
In the first reaction, an α- amino acid is oxidised and undergoes decarboxylation to give an aldehyde at the former α position by heating with oxygen in the presence of a reducing ... | https://en.wikipedia.org/wiki/Akabori_amino-acid_reaction |
Akaflieg is an abbreviation for Akademische Fliegergruppe , groups of aeronautical engineering students from individual German universities of technology and Technische Hochschulen , pre and postwar, who design aircraft, often gliders.
Otto Lilienthal published his book Der Vogelflug als Grundlage der Fliegekunst (Bi... | https://en.wikipedia.org/wiki/Akaflieg |
An akamptisomer is a type of conformational isomer characterized by a hindered inversion of a bond angle . It was first discovered in 2018 in a series of bridged porphyrin molecules. [ 1 ] [ 2 ]
This stereochemistry article is a stub . You can help Wikipedia by expanding it . | https://en.wikipedia.org/wiki/Akamptisomer |
Akan goldweights (locally known as mrammou or abrammuo ) [ 1 ] are weights made of brass used as a measuring system by the Akan people of West Africa , particularly for wei and fair-trade arrangements with one another. The status of a man increased significantly if he owned a complete set of weights. Complete small set... | https://en.wikipedia.org/wiki/Akan_goldweights |
AKARI ( ASTRO-F ) was an infrared astronomy satellite developed by Japan Aerospace Exploration Agency , in cooperation with institutes of Europe and Korea. It was launched on 21 February 2006, at 21:28 UTC (06:28, 22 February JST ) by M-V rocket into Earth Sun-synchronous orbit . After its launch it was named AKARI (明か... | https://en.wikipedia.org/wiki/Akari_(satellite) |
Akashmitra Mandal is an amateur astronomers ' organization (Regd.No. MAH/557/96/Thane) in India . Its objective is to popularize astronomy and induce students, enthusiasts to make useful contributions in the field of astronomical research. It also aims to carry systematic study of the subject. It was the first organiza... | https://en.wikipedia.org/wiki/Akash_Mitra_Mandal |
An akinete is an enveloped, thick-walled, non-motile, dormant cell formed by both cyanobacteria and algae . Cyanobacterial akinetes are mainly formed by filamentous, heterocyst-forming members under the order Nostocales and Stigonematales . [ 1 ] [ 2 ] [ 3 ] [ 4 ] Eukaryotic microalgae also produce akinetes, such as Ha... | https://en.wikipedia.org/wiki/Akinete |
In mathematics , and in particular the study of algebra , an Akivis algebra is a nonassociative algebra equipped with a binary operator, the commutator [ x , y ] {\displaystyle [x,y]} and a ternary operator, the associator [ x , y , z ] {\displaystyle [x,y,z]} that satisfy a particular relationship known as the Akivis ... | https://en.wikipedia.org/wiki/Akivis_algebra |
Akkermansia is a genus in the phylum Verrucomicrobiota ( Bacteria ). [ 2 ] The genus was first proposed by Derrien et al. (2004), with the type species Akkermansia muciniphila (gen. nov., sp. nov). [ 1 ]
Until 2016 the genus contained a single known species, namely A. muciniphila . [ 2 ] In 2016, Akkermansia glycaniph... | https://en.wikipedia.org/wiki/Akkermansia |
Akonadi is a storage service for personal information management (PIM) data and metadata named after the oracle goddess of justice in Ghana . [ 3 ] [ 4 ] It is one of the “pillars” (core technologies) behind the KDE SC 4 project, although it is designed to be used in any desktop environment. It is extensible and provid... | https://en.wikipedia.org/wiki/Akonadi |
Akorn Operating Company LLC ( Akorn Inc. prior to its bankruptcy) was an American generic pharmaceuticals manufacturer based in Lake Forest, Illinois . The company dealt in developing, manufacturing and marketing of generic and prescription drugs as well as animal and consumer health products. [ 1 ] It was a component ... | https://en.wikipedia.org/wiki/Akorn |
Akrasia (/əˈkreɪziə/; from Ancient Greek ἀκρασία, literally meaning "lack of self-control" or "powerlessness," derived from ἀ- "without" + κράτος "power, rule") refers to the phenomenon of acting against one's better judgment—the state in which an individual intentionally performs an action while simultaneously believi... | https://en.wikipedia.org/wiki/Akrasia |
In computer science , the Akra–Bazzi method , or Akra–Bazzi theorem , is used to analyze the asymptotic behavior of the mathematical recurrences that appear in the analysis of divide and conquer algorithms where the sub-problems have substantially different sizes. It is a generalization of the master theorem for divid... | https://en.wikipedia.org/wiki/Akra–Bazzi_method |
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Akshamsaddin (Muhammad Shams al-Din bin Hamzah, Turkish : Akşemseddin ) (1389 in Damascus – 16 February 1459 in Göynük , Bolu ), was an influential Ottoman Sunni Muslim scholar , poet , and mystic saint .
He was the grandson of Shahab al-Din al-Suhrawardi and a descendant of Abu Bakr al-Si... | https://en.wikipedia.org/wiki/Akshamsaddin |
Aksharapalli ( Akṣarapallī ) is a certain type of alphasyllabic numeration scheme extensively used in the pagination of manuscripts produced in India in pre-modern times. [ 1 ] The name Aksharapalli can be translated as the letter system . [ 2 ] In this system the letters or the syllables of the script in which the ma... | https://en.wikipedia.org/wiki/Aksharapalli |
Akuaba is a significant Adinkra symbol that carries cultural and historical meaning within the Akan communities of Ghana and Côte d'Ivoire . The symbol, which is closely associated with fertility, beauty, and protection, is widely recognized through the representation of a wooden doll known as 'Akuaba.' Traditionally, ... | https://en.wikipedia.org/wiki/Akuaba_(Adinkra_symbol) |
Aluminium borohydride , also known as aluminium tetrahydroborate , is the chemical compound with the formula Al(BH 4 ) 3 . It is a volatile pyrophoric liquid which is used as a reducing agent in laboratories. Unlike most other metal–borohydrides, which are ionic structures , aluminium borohydride is a covalent compound... | https://en.wikipedia.org/wiki/Al(BH4)3 |
In chemistry, aluminium(I) refers to monovalent aluminium (+1 oxidation state) in both ionic and covalent bonds. Along with aluminium(II), it is an extremely unstable form of aluminium.
While late Group 13 elements such as thallium and indium prefer the +1 oxidation state, aluminium(I) is rare. Aluminium does not expe... | https://en.wikipedia.org/wiki/Al(I) |
Aluminium nitrate is a white, water-soluble salt of aluminium and nitric acid , most commonly existing as the crystalline hydrate , aluminium nitrate nonahydrate, Al(NO 3 ) 3 ·9H 2 O.
Aluminium nitrate cannot be synthesized by the reaction of aluminium with concentrated nitric acid, as the aluminium forms a passivatio... | https://en.wikipedia.org/wiki/Al(NO3)3 |
Aluminium hydroxide , Al ( OH ) 3 , is found in as the mineral gibbsite (also known as hydrargillite) and its three much rarer polymorphs : bayerite , doyleite , and nordstrandite. Aluminium hydroxide is amphoteric , i.e., it has both basic and acidic properties. Closely related are aluminium oxide hydroxide , AlO(OH),... | https://en.wikipedia.org/wiki/Al(OH)3 |
Al-Jabr ( Arabic : الجبر ), also known as The Compendious Book on Calculation by Completion and Balancing ( Arabic : الكتاب المختصر في حساب الجبر والمقابلة , al-Kitāb al-Mukhtaṣar fī Ḥisāb al-Jabr wal-Muqābalah ; [ b ] or Latin : Liber Algebræ et Almucabola ), is an Arabic mathematical treatise on algebra written in Ba... | https://en.wikipedia.org/wiki/Al-Jabr |
Abū Yūsuf Yaʻqūb ibn ʼIsḥāq aṣ-Ṣabbāḥ al-Kindī ( / æ l ˈ k ɪ n d i / ; Arabic : أبو يوسف يعقوب بن إسحاق الصبّاح الكندي ; Latin : Alkindus ; c. 801–873 AD ) was an Arab Muslim polymath active as a philosopher , mathematician , physician , and music theorist . Al-Kindi was the first of the Islamic peripatetic philosopher... | https://en.wikipedia.org/wiki/Al-Kindi |
Aluminium sulfate is a salt with the formula Al 2 (SO 4 ) 3 . It is soluble in water and is mainly used as a coagulating agent (promoting particle collision by neutralizing charge) in the purification of drinking water [ 3 ] [ 4 ] and wastewater treatment plants , and also in paper manufacturing.
The anhydrous form oc... | https://en.wikipedia.org/wiki/Al2(SO4)3 |
Aluminum silicate (or aluminium silicate ) is a name commonly applied to chemical compounds which are derived from aluminium oxide , Al 2 O 3 and silicon dioxide , SiO 2 which may be anhydrous or hydrated, naturally occurring as minerals or synthetic. Their chemical formulae are often expressed as xAl 2 O 3 ·ySiO 2 ·zH... | https://en.wikipedia.org/wiki/Al2(SiO3)3 |
Beryllium-aluminum alloy an alloy that consists of 62% beryllium and 38% aluminum , by weight, corresponding approximately to an empirical formula of Be 2 Al. It was first developed in the 1960s by the Lockheed Missiles and Space Company , who called it Lockalloy , [ 1 ] [ 2 ] and used as a structural metal in the aero... | https://en.wikipedia.org/wiki/Al2Be |
Aluminium(III) bromide
Aluminium bromide is any chemical compound with the empirical formula AlBr x . Aluminium tribromide is the most common form of aluminium bromide. [ 3 ] It is a colorless, sublimable hygroscopic solid; hence old samples tend to be hydrated, mostly as aluminium tribromide hexahydrate (AlBr 3 ·6H 2... | https://en.wikipedia.org/wiki/Al2Br6 |
Aluminium chlorohydrate is a group of water-soluble, [ 1 ] specific aluminium salts having the general formula Al n Cl 3 n − m ( O H ) m . It is used in cosmetics as an antiperspirant and as a coagulant in water purification .
In water purification, this compound is preferred in some cases because of its high charge ,... | https://en.wikipedia.org/wiki/Al2Cl(OH)5 |
Dialane is an unstable compound of aluminium and hydrogen with formula Al 2 H 6 . [ 1 ] [ 2 ] [ 3 ] Dialane is unstable in that it reacts with itself to form a polymer, aluminium hydride . Isolated molecules can be stabilised and studied in solid hydrogen . [ 2 ]
This inorganic compound –related article is a stub . Yo... | https://en.wikipedia.org/wiki/Al2H6 |
Aluminium(I) oxide is a compound of aluminium and oxygen with the chemical formula Al 2 O. It can be prepared by heating the stable oxide Al 2 O 3 with elemental silicon at 1800 °C under vacuum . [ 1 ]
Al 2 O commonly exists as a gas, since the solid state is not stable at room temperature and is only stable between 1... | https://en.wikipedia.org/wiki/Al2O |
Aluminium sulfate is a salt with the formula Al 2 (SO 4 ) 3 . It is soluble in water and is mainly used as a coagulating agent (promoting particle collision by neutralizing charge) in the purification of drinking water [ 3 ] [ 4 ] and wastewater treatment plants , and also in paper manufacturing.
The anhydrous form oc... | https://en.wikipedia.org/wiki/Al2O12S3 |
Aluminium oxide (or aluminium(III) oxide ) is a chemical compound of aluminium and oxygen with the chemical formula Al 2 O 3 . It is the most commonly occurring of several aluminium oxides , and specifically identified as aluminium oxide . It is commonly called alumina and may also be called aloxide , aloxite , or alun... | https://en.wikipedia.org/wiki/Al2O3 |
Aluminium sulfide is a chemical compound with the formula Al 2 S 3 . This colorless species has an interesting structural chemistry, existing in several forms. The material is sensitive to moisture, hydrolyzing to hydrated aluminium oxides/hydroxides. [ 1 ] This can begin when the sulfide is exposed to the atmosphere. ... | https://en.wikipedia.org/wiki/Al2S3 |
Aluminium selenide is the inorganic compound with the formula Al 2 Se 3 .
It is a solid prepared by igniting a mixture of the elements at 1,000 °C (1,830 °F):
The pure compound is white, but typical samples are coloured. [ 3 ] Samples are usually protected from moisture, because they hydrolyze readily, giving off hig... | https://en.wikipedia.org/wiki/Al2Se3 |
Aluminum silicate (or aluminium silicate ) is a name commonly applied to chemical compounds which are derived from aluminium oxide , Al 2 O 3 and silicon dioxide , SiO 2 which may be anhydrous or hydrated, naturally occurring as minerals or synthetic. Their chemical formulae are often expressed as xAl 2 O 3 ·ySiO 2 ·zH... | https://en.wikipedia.org/wiki/Al2SiO5 |
Aluminium carbide is a chemical compound with the chemical formula Al 4 C 3 . It is a carbide of aluminium . It has the appearance of pale yellow to brown crystals. It is stable up to 1400 °C. It decomposes in water with the production of methane .
Aluminium carbide has an unusual crystal structure that consists of al... | https://en.wikipedia.org/wiki/Al4C3 |
Yttrium aluminium garnet ( YAG , Y 3 Al 5 O 12 ) is a synthetic crystalline material of the garnet group. It is a cubic yttrium aluminium oxide phase, with other examples being YAlO 3 (YAP [ 2 ] ) in a hexagonal or an orthorhombic, perovskite -like form, and the monoclinic Y 4 Al 2 O 9 (YAM [ 3 ] ). [ 4 ]
Due to its b... | https://en.wikipedia.org/wiki/Al5O12Y3 |
Aluminium dodecaboride ( AlB 12 ) is a superhard chemical compound with 17% aluminium content by weight.
It is the hardest boride of the aluminium-boron system, which also includes AlB 10 , AlB 4 , AlB 2 and AlB.
There are two crystalline forms, α- AlB 12 , and γ- AlB 12 . Both forms are very similar and consist of a... | https://en.wikipedia.org/wiki/AlB12 |
Aluminium diboride (AlB 2 ) is a chemical compound made from the metal aluminium and the metalloid boron . It is one of two compounds of aluminium and boron, the other being AlB 12 , which are both commonly referred to as aluminium boride.
Structurally the B atoms form graphite -like sheets with Al atoms between them,... | https://en.wikipedia.org/wiki/AlB2 |
Aluminium monobromide is a chemical compound with the empirical formula AlBr. It forms from the reaction of HBr with Al metal at high temperature. It disproportionates near room temperature:
This reaction is reversed at temperatures higher than 1000 °C.
A more stable compound of aluminium and bromine is aluminium t... | https://en.wikipedia.org/wiki/AlBr |
Aluminium(III) bromide
Aluminium bromide is any chemical compound with the empirical formula AlBr x . Aluminium tribromide is the most common form of aluminium bromide. [ 3 ] It is a colorless, sublimable hygroscopic solid; hence old samples tend to be hydrated, mostly as aluminium tribromide hexahydrate (AlBr 3 ·6H 2... | https://en.wikipedia.org/wiki/AlBr3 |
Aluminium monochloride , or chloridoaluminium is the metal halide with the formula AlCl. Aluminium monochloride as a molecule is thermodynamically stable at high temperature and low pressure only. [ 2 ] This compound is produced as a step in the Alcan process to smelt aluminium from an aluminium-rich alloy . When the ... | https://en.wikipedia.org/wiki/AlCl |
Triethylaluminium is one of the simplest examples of an organoaluminium compound. Despite its name the compound has the formula Al 2 ( C 2 H 5 ) 6 (abbreviated as Al 2 Et 6 or TEA). This colorless liquid is pyrophoric . It is an industrially important compound, closely related to trimethylaluminium . [ 4 ] [ 5 ]
The s... | https://en.wikipedia.org/wiki/AlEt3 |
Aluminium monofluoride , also known as fluoridoaluminium , is the chemical compound with the formula AlF. This elusive species is formed by the reaction between aluminium trifluoride and metallic aluminium at elevated temperatures but quickly reverts to the reactants when cooled. [ 1 ] Clusters derived from related al... | https://en.wikipedia.org/wiki/AlF |
Aluminium fluoride is an inorganic compound with the formula Al F 3 . It forms hydrates AlF 3 · x H 2 O . Anhydrous AlF 3 and its hydrates are all colorless solids. Anhydrous AlF 3 is used in the production of aluminium. Several occur as minerals.
Aside from anhydrous AlF 3 , several hydrates are known. With the formu... | https://en.wikipedia.org/wiki/AlF3 |
Potassium aluminium fluoride ( PAF , chemical formula KAlF 4 ) is an inorganic compound .
This compound is used as flux in the smelting of secondary aluminium, to reduce or remove the magnesium content of the melt. The main environmental issue that arises from using PAF is the production of fluoride gases. Calcium hyd... | https://en.wikipedia.org/wiki/AlF4K |
Aluminium hydride (also known as alane and alumane ) refers to a collection of inorganic compounds with the formula Al H 3 . As a gas, alane is a planar molecule. When generated in ether solutions, it exists as an ether adduct. Solutions of alane polymerizes to a solid, which exists in several crystallographically di... | https://en.wikipedia.org/wiki/AlH3 |
Aluminium hydroxide , Al ( OH ) 3 , is found in as the mineral gibbsite (also known as hydrargillite) and its three much rarer polymorphs : bayerite , doyleite , and nordstrandite. Aluminium hydroxide is amphoteric , i.e., it has both basic and acidic properties. Closely related are aluminium oxide hydroxide , AlO(OH),... | https://en.wikipedia.org/wiki/AlH3O3 |
Lithium aluminium hydride , commonly abbreviated to LAH , is an inorganic compound with the chemical formula Li [ Al H 4 ] or LiAlH 4 . It is a white solid, discovered by Finholt, Bond and Schlesinger in 1947. [ 4 ] This compound is used as a reducing agent in organic synthesis , especially for the reduction of esters ... | https://en.wikipedia.org/wiki/AlH4Li |
Aluminium monoiodide is an aluminium (I) compound with the chemical formula Al I . It is unstable at room temperature due to dismutation : [ 1 ]
It forms a cyclic adduct Al 4 I 4 (NEt 3 ) 4 with triethylamine .
This inorganic compound –related article is a stub . You can help Wikipedia by expanding it . | https://en.wikipedia.org/wiki/AlI |
Aluminum iodide Aluminium triiodide
Aluminium iodide is a chemical compound containing aluminium and iodine . Invariably, the name refers to a compound of the composition AlI 3 , formed by the reaction of aluminium and iodine [ 4 ] or the action of HI on Al metal. The hexahydrate is obtained from a reaction between ... | https://en.wikipedia.org/wiki/AlI3 |
Lithium aluminum oxide
Lithium aluminate ( LiAlO 2 ), also called lithium aluminium oxide , is an inorganic chemical compound , an aluminate of lithium . In microelectronics , lithium aluminate is considered as a lattice matching substrate for gallium nitride . [ 3 ] [ 4 ] In nuclear technology , lithium aluminate is... | https://en.wikipedia.org/wiki/AlLiO2 |
Aluminium nitrate is a white, water-soluble salt of aluminium and nitric acid , most commonly existing as the crystalline hydrate , aluminium nitrate nonahydrate, Al(NO 3 ) 3 ·9H 2 O.
Aluminium nitrate cannot be synthesized by the reaction of aluminium with concentrated nitric acid, as the aluminium forms a passivatio... | https://en.wikipedia.org/wiki/AlN3O9 |
Aluminium(II) oxide or aluminium monoxide is a compound of aluminium and oxygen with the chemical formula AlO. It has been detected in the gas phase after explosion of aluminized grenades in the upper atmosphere [ 1 ] [ 2 ] [ 3 ] and in stellar absorption spectra. [ 4 ]
Aluminium(II) oxide is one of the aluminium oxid... | https://en.wikipedia.org/wiki/AlO |
Hydroxyaluminium(I) , also known as Aluminium(I) hydroxide , is an inorganic chemical with molecular formula AlOH. It consists of aluminium in the +1 oxidation state paired with a single hydroxide . It has been detected as a molecular substance in the envelope of an oxygen -rich red supergiant star , a place where subs... | https://en.wikipedia.org/wiki/AlOH |
Aluminium hydroxide , Al ( OH ) 3 , is found in as the mineral gibbsite (also known as hydrargillite) and its three much rarer polymorphs : bayerite , doyleite , and nordstrandite. Aluminium hydroxide is amphoteric , i.e., it has both basic and acidic properties. Closely related are aluminium oxide hydroxide , AlO(OH),... | https://en.wikipedia.org/wiki/AlOH3 |
Aluminium hydroxide oxide or aluminium oxyhydroxide , AlO(OH) is found as one of two well defined crystalline phases, which are also known as the minerals boehmite and diaspore . The minerals are important constituents of the aluminium ore , bauxite . [ 3 ]
The aluminium oxides, oxide hydroxides, and hydroxides can be... | https://en.wikipedia.org/wiki/AlOOH |
Aluminium phosphide is a highly toxic inorganic compound with the chemical formula AlP, used as a wide band gap semiconductor and a fumigant . This colorless solid is generally sold as a grey-green-yellow powder due to the presence of impurities arising from hydrolysis and oxidation .
AlP crystals are dark grey to dar... | https://en.wikipedia.org/wiki/AlP |
Aluminium phosphate is a chemical compound . In nature it occurs as the mineral berlinite . [ 3 ] Many synthetic forms of aluminium phosphate are known. They have framework structures similar to zeolites and some are used as catalysts , ion-exchangers or molecular sieves . [ 4 ] Commercial aluminium phosphate gel is av... | https://en.wikipedia.org/wiki/AlPO4 |
The al-Hijarah missile was an Iraqi liquid propelled inertial Short-range ballistic missile , it was also a Scud missile and considered an upgrade of the al-Hussein missile equipped with chemical warheads. [ 1 ] It was developed by 1990 [ 2 ] and was first used in the Persian Gulf War where the al-Hijarah missile would... | https://en.wikipedia.org/wiki/Al_Hijarah_(missile) |
Alacepril ( INN ) is an ACE inhibitor medication indicated as a treatment for hypertension. The medication metabolizes to captopril and desacetylalacepril. [ 1 ] Alacepril is primarily used to treat hypertension, and in some cases, renovascular hypertension . It's often combined with other medications, particularly oth... | https://en.wikipedia.org/wiki/Alacepril |
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