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Arsenic trisulfide Phosphorus pentasulfide
Arsenic pentasulfide is an inorganic compound containing arsenic and sulfur. [ 1 ]
Solids of the approximate formula As 2 S 5 have been used as pigments and chemical intermediates but are generally only of interest in academic laboratories. [ 2 ]
Arsenic pentasulfide is pre... | https://en.wikipedia.org/wiki/As2S5 |
Arsenic triselenide is an inorganic chemical compound with the chemical formula As 2 Se 3 .
Amorphous arsenic triselenide is used as a chalcogenide glass for infrared optics . When purified, it transmits light with wavelengths between ca. 0.7 and 19 μm. [ 3 ]
In arsenic triselenide, arsenic is covalently bonded to se... | https://en.wikipedia.org/wiki/As2Se3 |
Arsenic(III) telluride is an inorganic compound with the chemical formula As 2 Te 3 . It exists in two forms, the monoclinic α phase which transforms under high pressure to a rhombohedral β phase. [ 2 ] The compound is a semiconductor , with most current carried by holes . [ 3 ] Arsenic telluride has been examined for ... | https://en.wikipedia.org/wiki/As2Te3 |
Arsenic trioxide is an inorganic compound with the formula As 2 O 3 . [ 4 ] As an industrial chemical, its major uses include the manufacture of wood preservatives , pesticides , and glass . [ 5 ] It is sold under the brand name Trisenox among others [ 2 ] [ 3 ] when used as a medication to treat a type of cancer known... | https://en.wikipedia.org/wiki/As4O6 |
Alacránite (As 8 S 9 ) is an arsenic sulfide mineral first discovered in the Uzon caldera , Kamchatka , Russia . It was named for its occurrence in the Alacrán silver / arsenic / antimony mine . Pampa Larga , Chile . It is generally more rare than realgar and orpiment . Its origin is hydrothermal . It occurs as subhed... | https://en.wikipedia.org/wiki/As8S9 |
Arsenic tribromide is an inorganic compound with the formula As Br 3 , it is a bromide of arsenic. Arsenic is a chemical element that has the symbol As and atomic number 33. This pyramidal molecule is the only known binary arsenic bromide. AsBr 3 is noteworthy for its very high refractive index of approximately 2.3. It... | https://en.wikipedia.org/wiki/AsBr3 |
Cacodylic acid is an organoarsenic compound with the formula (CH 3 ) 2 As O 2 H. With the formula R 2 As(O)OH, it is the simplest of the arsinic acids . It is a colorless solid that is soluble in water.
Neutralization of cacodylic acid with base gives cacodylate salts, e.g. sodium cacodylate . They are potent herbicid... | https://en.wikipedia.org/wiki/AsC2H7O2 |
Arsenic trichloride is an inorganic compound with the formula AsCl 3 , also known as arsenous chloride or butter of arsenic . This poisonous oil is colourless, although impure samples may appear yellow. It is an intermediate in the manufacture of organoarsenic compounds . [ 4 ]
AsCl 3 is a pyramidal molecule with C ... | https://en.wikipedia.org/wiki/AsCl3 |
Arsenic pentachloride is a chemical compound of arsenic and chlorine [ 2 ] with the formula As Cl 5 . This compound was first prepared in 1976 through the UV irradiation of arsenic trichloride , AsCl 3 , in liquid chlorine at −105 °C. [ 3 ] AsCl 5 decomposes at around −50 °C. The structure of the solid was finally dete... | https://en.wikipedia.org/wiki/AsCl5 |
Arsenic trifluoride is a chemical compound of arsenic and fluorine with the chemical formula AsF 3 . It is a colorless liquid which reacts readily with water. [ 3 ] Like other inorganic arsenic compounds, it is highly toxic .
It can be prepared by reacting hydrogen fluoride , HF, with arsenic trioxide : [ 3 ]
It has ... | https://en.wikipedia.org/wiki/AsF3 |
Arsenic pentafluoride is a chemical compound of arsenic and fluorine . It is a toxic, colorless gas. The oxidation state of arsenic is +5.
Arsenic pentafluoride can be prepared by direct combination of arsenic and fluorine : [ 3 ]
It can also be prepared by the reaction of arsenic trifluoride and fluorine:
or the a... | https://en.wikipedia.org/wiki/AsF5 |
Arsine ( IUPAC name: arsane ) is an inorganic compound with the formula As H 3 . This flammable, pyrophoric , and highly toxic pnictogen hydride gas is one of the simplest compounds of arsenic . [ 4 ] Despite its lethality, it finds some applications in the semiconductor industry and for the synthesis of organoarsenic ... | https://en.wikipedia.org/wiki/AsH₃ |
Arsenic triiodide is the inorganic compound with the formula As I 3 . [ 2 ] [ 3 ] [ 4 ] [ 5 ] It is an orange to dark red solid [ 2 ] [ 3 ] that readily sublimes. It is a pyramidal molecule that is useful for preparing organoarsenic compounds .
It is prepared by a reaction of arsenic trichloride and potassium iodide :... | https://en.wikipedia.org/wiki/AsI3 |
Arsenic tetroxide is an inorganic compound with the chemical formula As 2 O 4 , containing As(III) and As(V), As III As V O 4 . [ 2 ]
It can be synthesized in an autoclave via the following reaction:
It adopts a layer structure, and the coordination geometry of As(III) is triangular pyramid while As(V) is tetrahedral... | https://en.wikipedia.org/wiki/AsO2 |
The arsenate is an ion with the chemical formula AsO 3− 4 . [ 1 ] Bonding in arsenate consists of a central arsenic atom, with oxidation state +5, double bonded to one oxygen atom and single bonded to a further three oxygen atoms. [ 2 ] The four oxygen atoms orient around the arsenic atom in a tetrahedral geometry . [ ... | https://en.wikipedia.org/wiki/AsO4 |
" As We May Think " is a 1945 essay by Vannevar Bush which has been described as visionary and influential, anticipating many aspects of information society . It was first published in The Atlantic in July 1945 and republished in an abridged version in September 1945—before and after the atomic bombings of Hiroshima an... | https://en.wikipedia.org/wiki/As_We_May_Think |
Asbestiform is a crystal habit . It describes a mineral that grows in a fibrous aggregate of high tensile strength , flexible, long, and thin crystals that readily separate. [ 1 ] The most common asbestiform mineral is chrysotile , commonly called "white asbestos ", a magnesium phyllosilicate part of the serpentine gro... | https://en.wikipedia.org/wiki/Asbestiform |
Asbestos ( / æ s ˈ b ɛ s t ə s , æ z -, - t ɒ s / ass- BES -təs, az-, -toss ) [ 1 ] is a group of naturally occurring, toxic , carcinogenic and fibrous silicate minerals . There are six types, all of which are composed of long and thin fibrous crystals , each fibre ( particulate with length substantially greater than ... | https://en.wikipedia.org/wiki/Asbestos |
Asbestos Convention, 1986 is an International Labour Organization Convention, adopted at the 72nd session of the International Labour Conference . [ 1 ]
It was established in 1986, with the preamble stating:
Having decided upon the adoption of certain proposals with regard to safety in the use of asbestos,... [ 1 ]... | https://en.wikipedia.org/wiki/Asbestos_Convention |
The Asbestos Hazard Emergency Response Act (AHERA) is a US federal law enacted in 1986 by the 99th United States Congress and signed into law by President Ronald Reagan . [ 1 ] It required the EPA to create regulations regarding local education agencies' management of asbestos in school buildings, including inspection ... | https://en.wikipedia.org/wiki/Asbestos_Hazard_Emergency_Response_Act |
Ascalaph Designer is a computer program for general purpose molecular modelling for molecular design and simulations. It provides a graphical environment for the common programs of quantum and classical molecular modelling ORCA , NWChem , Firefly , CP2K and MDynaMix [ 1 ] . [ 2 ] The molecular mechanics calculations co... | https://en.wikipedia.org/wiki/Ascalaph_Designer |
Ascaridole is a natural organic compound classified as a bicyclic monoterpenoid that has an unusual bridging peroxide functional group. It is a colorless liquid with a pungent smell and taste that is soluble in most organic solvents. Like other low molecular weight organic peroxides , it is unstable and prone to rapid ... | https://en.wikipedia.org/wiki/Ascaridole |
Ascendency or ascendancy is a quantitative attribute of an ecosystem , defined as a function of the ecosystem's trophic network . Ascendency is derived using mathematical tools from information theory . It is intended to capture in a single index the ability of an ecosystem to prevail against disturbance by virtue of... | https://en.wikipedia.org/wiki/Ascendency |
In mathematics , the ascending chain condition ( ACC ) and descending chain condition ( DCC ) are finiteness properties satisfied by some algebraic structures , most importantly ideals in certain commutative rings . [ 1 ] [ 2 ] [ 3 ] These conditions played an important role in the development of the structure theory o... | https://en.wikipedia.org/wiki/Ascending_chain_condition |
Aschoff's Rules consist of three generalized statements that were first introduced by Jürgen Aschoff . These rules are fundamental in the field of chronobiology as they describe how the circadian rhythms of both diurnal and nocturnal animals are impacted by varying light conditions. [ 1 ]
The circadian rhythm , regula... | https://en.wikipedia.org/wiki/Aschoff's_Rules |
The ascidian mitochondrial code (translation table 13 ) is a genetic code found in the mitochondria of Ascidia .
Bases: adenine (A), cytosine (C), guanine (G) and thymine (T) or uracil (U).
Amino acids: Alanine (Ala, A), Arginine (Arg, R), Asparagine (Asn, N), Aspartic acid (Asp, D), Cysteine (Cys, C), Glutamic acid ... | https://en.wikipedia.org/wiki/Ascidian_mitochondrial_code |
AsciiMath is a client-side mathematical markup language for displaying mathematical expressions in web browsers . [ 1 ] [ 2 ]
Using the JavaScript script ASCIIMathML.js, AsciiMath notation is converted to MathML at the time the page is loaded by the browser, natively in Mozilla Firefox , Safari , and via a plug-in in ... | https://en.wikipedia.org/wiki/AsciiMath |
An ascocarp , or ascoma ( pl. : ascomata ), is the fruiting body ( sporocarp ) of an ascomycete phylum fungus. It consists of very tightly interwoven hyphae and millions of embedded asci , each of which typically contains four to eight ascospores . Ascocarps are most commonly bowl-shaped (apothecia) but may take on a s... | https://en.wikipedia.org/wiki/Ascocarp |
Ascomycota is a phylum of the kingdom Fungi that, together with the Basidiomycota , forms the subkingdom Dikarya . Its members are commonly known as the sac fungi or ascomycetes . It is the largest phylum of Fungi, with over 64,000 species . [ 3 ] The defining feature of this fungal group is the " ascus " (from Ancient... | https://en.wikipedia.org/wiki/Ascomycota |
The Ascona B-DNA Consortium (ABC) is a collaborative international research initiative founded in 2001 to investigate the sequence-dependent mechanical properties of DNA using molecular dynamics (MD) simulations. The consortium has contributed significantly to the understanding of DNA structure and dynamics over the pa... | https://en.wikipedia.org/wiki/Ascona_B-DNA_Consortium |
In fungi , an ascospore is the sexual spore formed inside an ascus —the sac-like cell that defines the division Ascomycota , the largest and most diverse division of fungi. After two parental nuclei fuse, the ascus undergoes meiosis (halving of genetic material) followed by a mitosis (cell division), ordinarily produci... | https://en.wikipedia.org/wiki/Ascospore |
An ascus (from Ancient Greek ἀσκός ( askós ) ' skin bag, wineskin ' ; pl. : asci ) [ 1 ] is the sexual spore -bearing cell produced in ascomycete fungi . Each ascus usually contains eight ascospores (or octad), produced by meiosis followed, in most species, by a mitotic cell division. However, asci in some genera or sp... | https://en.wikipedia.org/wiki/Ascus |
Asepsis is the state of being free from disease-causing micro-organisms (such as pathogenic bacteria , viruses , pathogenic fungi , and parasites ). [ 1 ] There are two categories of asepsis: medical and surgical. [ 1 ] The modern day notion of asepsis is derived from the older antiseptic techniques, a shift initiated ... | https://en.wikipedia.org/wiki/Asepsis |
Aseptic sampling is the process of aseptically withdrawing materials used in biopharmaceutical processes for analysis so as not contaminate or alter the sample or the source of the sample. [ 1 ] Aseptic samples are drawn throughout the entire biopharmaceutical process ( cell culture /fermentation, buffer & media prep, ... | https://en.wikipedia.org/wiki/Aseptic_sampling |
Ash is the solid remnants of fires . [ 1 ] Specifically, ash refers to all non- aqueous , non- gaseous residues that remain after something burns . In analytical chemistry , to analyse the mineral and metal content of chemical samples , ash is the non- gaseous , non- liquid residue after complete combustion.
Ashes as ... | https://en.wikipedia.org/wiki/Ash |
In analytical chemistry , ashing or ash content determination is the process of mineralization by complete combustion for preconcentration of trace substances prior to a chemical analysis, [ 1 ] such as chromatography , or optical analysis, such as spectroscopy .
The ash content of a sample is a measure of the amount ... | https://en.wikipedia.org/wiki/Ash_(chemistry) |
An ash pond , also called a coal ash basin or surface impoundment , [ 1 ] is an engineered structure used at coal-fired power stations for the disposal of two types of coal combustion products : bottom ash and fly ash . The pond is used as a landfill to prevent the release of ash into the atmosphere. Although the use o... | https://en.wikipedia.org/wiki/Ash_pond |
Solid State Physics , better known by its colloquial name Ashcroft and Mermin , is an introductory condensed matter physics textbook written by Neil Ashcroft and N. David Mermin . [ 1 ] Published in 1976 by Saunders College Publishing and designed by Scott Olelius, the book has been translated into over half a dozen la... | https://en.wikipedia.org/wiki/Ashcroft_and_Mermin |
Asher yatzar ( Hebrew : בִּרְכַּת אֲשֶׁר יָצַר "Who has formed man") is a blessing in Judaism . It is recited after one engages in an act of excretion or urination , [ 1 ] but is also included in many Jewish prayer books as a part of daily prayer prior to birkot hashachar . [ 2 ]
The purpose of this blessing is to tha... | https://en.wikipedia.org/wiki/Asher_yatzar |
Ashish Arora is an Indian structural biologist and a senior scientist at Central Drug Research Institute . [ 1 ] He did his postgraduate studies at Rajasthan University and post-doctoral work at the Max Planck Institute for Biophysical Chemistry , Goettingen, and University of Virginia , Charlottesville, VA, before joi... | https://en.wikipedia.org/wiki/Ashish_Arora |
Ashoverite is one of three polymorphs of zinc hydroxide , Zn(OH) 2 . It is a rare mineral first found in a limestone quarry near Ashover , Derbyshire , England, in 1988. [ 1 ] It has also been found in the Harz mountain range in Germany , and in Namibia .
The mineral was discovered after samples of the polymorph sweet... | https://en.wikipedia.org/wiki/Ashoverite |
Ashraf Choudhary QSO (born 15 February 1949; Sialkot , Punjab ) is a Pakistani-New Zealand scientist in agricultural engineering and formerly a member of the Parliament in New Zealand. He is a member of the Labour Party , and was New Zealand's first MP from South Asia and Pakistan . [ 1 ]
Choudhary was born in the Pak... | https://en.wikipedia.org/wiki/Ashraf_Choudhary |
The Asia-Pacific Journal of Chemical Engineering is a peer-reviewed scientific journal published by John Wiley & Sons on behalf of Curtin University of Technology . Until 2006 it was known as Developments in Chemical Engineering and Mineral Processing and published (in print only) by Curtin University of Technology. Th... | https://en.wikipedia.org/wiki/Asia-Pacific_Journal_of_Chemical_Engineering |
The Asia Petrochemical Industry Conference ( APIC ) is an annual, international conference within the petrochemical industry intended to "spur mutual friendship and goodwill" within the industry with an aim to encouraging its "sound development". [ 1 ] Known at its 1979 founding as the East Asia Petrochemical Industry ... | https://en.wikipedia.org/wiki/Asia_Petrochemical_Industry_Conference |
The Asian Conference on Electrochemical Power Sources (ACEPS) is a series of scientific conferences focusing on electrochemical power sources that is held in East Asia , Southeast Asia and South Asia at different locations each time. It was initiated by Professor Zempachi Ogumi in Japan in 2006, and has subsequently be... | https://en.wikipedia.org/wiki/Asian_Conference_on_Electrochemical_Power_Sources |
The Asian Young Researchers Conference on Computational and Omics Biology ( AYRCOB ) is a conference series for young researchers and students who are conducting their research in the fields of computational , omics and systems biology in Asia . [ 1 ] The main objectives of AYRCOB are to promote international exchange ... | https://en.wikipedia.org/wiki/Asian_Young_Researchers_Conference_on_Computational_and_Omics_Biology |
The Asilomar Conference on Beneficial AI was a conference organized by the Future of Life Institute , [ 1 ] held January 5–8, 2017, at the Asilomar Conference Grounds in California . More than 100 thought leaders and researchers in economics, law, ethics, and philosophy met at the conference, to address and formulate p... | https://en.wikipedia.org/wiki/Asilomar_Conference_on_Beneficial_AI |
The Asilomar Conference on Recombinant DNA was an influential conference organized by Paul Berg , [ 1 ] Maxine Singer , [ 2 ] and colleagues to discuss the potential biohazards and regulation of biotechnology , held in February 1975 at a conference center at Asilomar State Beach , California. [ 3 ] A group of about 140... | https://en.wikipedia.org/wiki/Asilomar_Conference_on_Recombinant_DNA |
The Asilomar International Conference on Climate Intervention Technologies was a conference developed by Margaret Leinen of the Climate Response Fund and chaired by Michael MacCracken of the Climate Institute. The conference took place in March 2010 and the recommendations were published in November 2010. The goal was ... | https://en.wikipedia.org/wiki/Asilomar_International_Conference_on_Climate_Intervention_Technologies |
The Asinger-reaction (sometimes referred to as the Asinger-4 component reaction or A-4CR for short) is a multicomponent reaction for the synthesis of 3- thiazolines and other related heterocycles. [ 1 ] It is named after Friedrich Asinger who first reported it in 1956. [ 2 ]
An α-halogenated carbonyl-component reacts ... | https://en.wikipedia.org/wiki/Asinger_reaction |
AskMeNow Inc. was an American public corporation, specializing in mobile search and mobile advertising . The Irvine, California based company officially launched in November 2005 and ceased operations in late 2008. [ 2 ] [ 3 ] AskMeNow's primary offering was a consumer mobile search product based on proprietary techno... | https://en.wikipedia.org/wiki/AskMeNow |
Ask Ontario (askON) is a realtime chat and SMS -based research information service that connects students of Ontario, Canada to staff at college libraries across the province, for instant-messaging and SMS-based reference help online . [ 1 ] askON's mandate is to help visitors find better information than they can on t... | https://en.wikipedia.org/wiki/Ask_Ontario |
Ask Ubuntu is a community-driven question and answer website for the Ubuntu operating system. It is part of the Stack Exchange Network , running the same software as Stack Overflow . [ 1 ]
Members gain reputation based on the community's response (through voting) to their questions and answers. Reputation signifies tr... | https://en.wikipedia.org/wiki/Ask_Ubuntu |
The Askaryan radiation [ 1 ] [ 2 ] [ 3 ] [ 4 ] also known as Askaryan effect is the phenomenon whereby a particle traveling faster than the phase velocity of light in a dense dielectric (such as salt, ice or the lunar regolith ) produces a shower of secondary charged particles which contains a charge anisotropy and emi... | https://en.wikipedia.org/wiki/Askaryan_radiation |
Asker Jeukendrup is a sports nutrition scientist and an Ironman triathlete.
Following an MSc in Human Movement Sciences at Maastricht University in the Netherlands he completed his PhD in 1997 at the same university studying aspects of carbohydrate and fat metabolism during exercise. [ 2 ] After postdoctoral research ... | https://en.wikipedia.org/wiki/Asker_Jeukendrup |
In mathematics, the Askey–Gasper inequality is an inequality for Jacobi polynomials proved by Richard Askey and George Gasper ( 1976 ) and used in the proof of the Bieberbach conjecture .
It states that if β ≥ 0 {\displaystyle \beta \geq 0} , α + β ≥ − 2 {\displaystyle \alpha +\beta \geq -2} , and − 1 ≤ x ≤ 1 {\displa... | https://en.wikipedia.org/wiki/Askey–Gasper_inequality |
Askold Georgievich Khovanskii ( Russian : Аскольд Георгиевич Хованский ; born 3 June 1947, Moscow) is a Russian and Canadian mathematician currently a professor of mathematics at the University of Toronto , Canada. [ 1 ] His areas of research are algebraic geometry , commutative algebra , singularity theory , different... | https://en.wikipedia.org/wiki/Askold_Khovanskii |
Asparagine synthetase (or aspartate-ammonia ligase ) is a chiefly cytoplasmic enzyme that generates asparagine from aspartate . [ 1 ] This amidation reaction is similar to that promoted by glutamine synthetase . The enzyme is ubiquitous in its distribution in mammalian organs, but basal expression is relatively low in ... | https://en.wikipedia.org/wiki/Asparagine_synthetase |
The aspect ratio of a geometric shape is the ratio of its sizes in different dimensions. For example, the aspect ratio of a rectangle is the ratio of its longer side to its shorter side—the ratio of width to height, [ 1 ] [ 2 ] when the rectangle is oriented as a " landscape ".
The aspect ratio is most often expressed... | https://en.wikipedia.org/wiki/Aspect_ratio |
In aeronautics , the aspect ratio of a wing is the ratio of its span to its mean chord . It is equal to the square of the wingspan divided by the wing area. Thus, a long, narrow wing has a high aspect ratio, whereas a short, wide wing has a low aspect ratio. [ 1 ]
Aspect ratio and other features of the planform are of... | https://en.wikipedia.org/wiki/Aspect_ratio_(aeronautics) |
The aspect ratio of an image is the ratio of its width to its height. It is expressed as two numbers separated by a colon, in the format width:height. Common aspect ratios are 1.85:1 and 2.39:1 in cinematography, 4:3 and 16:9 in television, and 3:2 in still photography.
The common film aspect ratios used in cinemas ar... | https://en.wikipedia.org/wiki/Aspect_ratio_(image) |
Aspen HYSYS (or simply HYSYS ) is a chemical process simulator currently developed by AspenTech used to mathematically model chemical processes, from unit operations to full chemical plants and refineries . HYSYS is able to perform many of the core calculations of chemical engineering , including those concerned with m... | https://en.wikipedia.org/wiki/Aspen_HYSYS |
The Aspen Movie Map was a hypermedia system developed at MIT that enabled the user to take a virtual tour through the city of Aspen, Colorado . It was developed by a team working with Andrew Lippman in 1978 with funding from ARPA .
The Aspen Movie Map enabled the user to take a virtual tour through the city of Aspen, ... | https://en.wikipedia.org/wiki/Aspen_Movie_Map |
Aspergillus niger var. niger Aspergillopsis nigra (Tiegh.) Speg. Rhopalocystis nigra (Tiegh.) Grove Sterigmatocystis nigra (Tiegh.) Sacc. (1877)
Aspergillus niger is a mold classified within the Nigri section of the Aspergillus genus. [ 1 ] The Aspergillus genus consists of common molds found throughout the environmen... | https://en.wikipedia.org/wiki/Aspergillus_niger |
In materials science , asperity , defined as "unevenness of surface, roughness, ruggedness" (from the Latin asper —"rough" [ 1 ] ), has implications (for example) in physics and seismology . Smooth surfaces, even those polished to a mirror finish, are not truly smooth on a microscopic scale. They are rough, with sharp,... | https://en.wikipedia.org/wiki/Asperity_(materials_science) |
Asphalt concrete (commonly called asphalt , [ 1 ] blacktop , or pavement in North America, and tarmac or bitumen macadam in the United Kingdom and the Republic of Ireland) is a composite material commonly used to surface roads , parking lots , airports , and the core of embankment dams . [ 2 ] Asphalt mixtures have bee... | https://en.wikipedia.org/wiki/Asphalt_concrete |
An asphalt plant is a plant used for the manufacture of asphalt , macadam and other forms of coated roadstone, sometimes collectively known as blacktop or asphalt concrete .
The manufacture of coated roadstone demands the combination of a number of aggregates , sand and a filler (such as stone dust). These materials a... | https://en.wikipedia.org/wiki/Asphalt_plant |
Asphaltenes are molecular substances that are found in crude oil , along with resins , aromatic hydrocarbons , and saturates (i.e. saturated hydrocarbons such as alkanes ). [ 1 ] [ 2 ] The word "asphaltene" was coined by Jean-Baptiste Boussingault in 1837 when he noticed that the distillation residue of some bitumens h... | https://en.wikipedia.org/wiki/Asphaltene |
Asphaltite (also known as uintahite , asphaltum , gilsonite or oil sands [ 1 ] ) is a naturally occurring soluble solid hydrocarbon , a form of asphalt [ 2 ] (or bitumen) with a relatively high melting temperature. Its large-scale production occurs in the Uintah Basin of Utah and Colorado , United States. Although the ... | https://en.wikipedia.org/wiki/Asphaltite |
An asphyxiant gas , also known as a simple asphyxiant , is a nontoxic or minimally toxic gas which reduces or displaces the normal oxygen concentration in breathing air . Breathing of oxygen-depleted air can lead to death by asphyxiation (suffocation). Because asphyxiant gases are relatively inert and odorless, their p... | https://en.wikipedia.org/wiki/Asphyxiant_gas |
In entomology , an aspirator , also known as a pooter , is a device used in the collection of insects , crustaceans or other small, fragile organisms, usually for scientific purposes. [ 1 ] [ 2 ] [ 3 ]
Such devices are most commonly used by entomologists for field and lab work. One of the most common designs consists ... | https://en.wikipedia.org/wiki/Aspirator_(entomology) |
Assault Engineering Brigades ( Russian : Штурмовая инженерно-сапёрная бригада ) or Storm Engineer-Sapper Brigades were formations of the Reserve of the Supreme High Command of the Red Army , being notable for their service during the Second World War . These brigades were designed to storm settlements and to break thro... | https://en.wikipedia.org/wiki/Assault_Engineering_Brigades |
An assault pioneer is an infantryman who is responsible for:
Assault pioneers are lineal descendants of pioneers who have formed an essential part of armies since at least the time of the Roman legions. These pioneers were normally employed to march in front of the advancing army, clearing the route as necessary. They... | https://en.wikipedia.org/wiki/Assault_pioneer |
An assay is an investigative (analytic) procedure in laboratory medicine , mining , pharmacology , environmental biology and molecular biology for qualitatively assessing or quantitatively measuring the presence, amount, or functional activity of a target entity. The measured entity is often called the analyte , the me... | https://en.wikipedia.org/wiki/Assay |
Assay offices are institutions set up to assay (test the purity of) precious metals. This is often done to protect consumers from buying fake items. Upon successful completion of an assay (i.e. if the metallurgical content is found be equal or better than that claimed by the maker and it otherwise conforms to the preva... | https://en.wikipedia.org/wiki/Assay_office |
Assay sensitivity is a property of a clinical trial defined as the ability of a trial to distinguish an effective treatment from a less effective or ineffective intervention. [ 1 ] Without assay sensitivity , a trial is not internally valid and is not capable of comparing the efficacy of two interventions.
Lack of ass... | https://en.wikipedia.org/wiki/Assay_sensitivity |
An assembloid is an in vitro model that combines two or more organoids , spheroids , or cultured cell types to recapitulate structural and functional properties of an organ . [ 1 ] They are typically derived from induced pluripotent stem cells . Assembloids have been used to study cell migration , neural circuit assemb... | https://en.wikipedia.org/wiki/Assembloid |
Community assembly rules are a set of controversial rules in ecology , first proposed by Jared Diamond . [ 1 ]
The rules were developed after more than a decade of research into the avian assemblages on islands near New Guinea . The rules assert that competition is responsible for determining the patterns of assemblag... | https://en.wikipedia.org/wiki/Assembly_rules |
Assertoric is an adjectival expression in Aristotelian logic that refers to propositions which merely assert that something is (or is not) the case. Assertoricity is the corresponding abstract noun .
Assertoric propositions contrast with problematic propositions which assert the possibility of something being true, an... | https://en.wikipedia.org/wiki/Assertoricity |
Asset health management or ( AHM ) is the field of study which looks at how to manage the "health" of an asset or assets. This often includes methods to establish asset health and effort to decide the appropriate actions to be taken to manage the assets' health. This also includes the discussion of health at end of li... | https://en.wikipedia.org/wiki/Asset_health_management |
Assimilation in biology is a crucial metabolic process in which absorbed nutrients are transformed into complex biomolecules that become an integral part of an organism’s cellular structure and function. It occurs after digestion and absorption, ensuring that essential macromolecules—such as carbohydrates, proteins, an... | https://en.wikipedia.org/wiki/Assimilation_(biology) |
Assimilative capacity is the ability for pollutants to be absorbed by an environment without detrimental effects to the environment or those who use of it. [ 1 ] Natural absorption into an environment is achieved through dilution , dispersion and removal through chemical or biological processes . [ 1 ] The term assimil... | https://en.wikipedia.org/wiki/Assimilative_capacity |
Assimina A. ( Mina ) Pelegri (born 1968) is a Greek-American aerospace engineer and materials scientist whose research involves the use of the finite element method to model and study composite materials and biological soft tissue . She is a professor at Rutgers University , where she chairs the Department of Mechanica... | https://en.wikipedia.org/wiki/Assimina_Pelegri |
The Assimitron was a Japanese device uses to measure fluctuating CO 2 levels at crop canopies. Led by E. Inoue at the National Institute of Agricultural Sciences in Tsukuba , Japan , the device itself was an offshoot of an earlier Australian invention, the Evapotron that first found mention in a 1958 article in the jou... | https://en.wikipedia.org/wiki/Assimitron |
Assisted GNSS ( A-GNSS ) is a GNSS augmentation system that often significantly improves the startup performance—i.e., time-to-first-fix (TTFF)—of a global navigation satellite system (GNSS). A-GNSS works by providing the necessary data to the device via a radio network instead of the slow satellite link, essentially "... | https://en.wikipedia.org/wiki/Assisted_GNSS |
Assisted migration is "the intentional establishment of populations or meta-populations beyond the boundary of a species' historic range for the purpose of tracking suitable habitats through a period of changing climate...." [ 1 ] It is therefore a nature conservation tactic by which plants or animals are intentionally... | https://en.wikipedia.org/wiki/Assisted_migration |
Assisted reproductive technology ( ART ) includes medical procedures used primarily to address infertility . This subject involves procedures such as in vitro fertilization (IVF), intracytoplasmic sperm injection (ICSI), and cryopreservation of gametes and embryos, and the use of fertility medication . When used to add... | https://en.wikipedia.org/wiki/Assisted_reproductive_technology |
An associated reproductive pattern is a seasonal change in reproduction which is highly correlated with a change in gonad and associated hormone . [ 1 ]
This article incorporates material from the Citizendium article " Associated reproductive pattern ", which is licensed under the Creative Commons Attribution-ShareAli... | https://en.wikipedia.org/wiki/Associated_reproductive_pattern |
In phytosociology and community ecology an association is a type of ecological community with a predictable species composition and consistent physiognomy (structural appearance) which occurs in a particular habitat type . [ 1 ] : 181 The term was first coined by Alexander von Humboldt [ 1 ] : 16 and formalised by the ... | https://en.wikipedia.org/wiki/Association_(ecology) |
Association Aéronautique et Astronautique de France ( 3AF or AAAF ) is the French national aeronautical and astronautical association. It is located in Paris . [ 1 ]
It has been created in 1971 from the Association Française des Ingénieurs et Techniciens de l'Aéronautique et de l'Espace (AFITAE) created in 1945 and th... | https://en.wikipedia.org/wiki/Association_Aéronautique_et_Astronautique_de_France |
The Isère-Drac-Romanche Departmental Association ( French : Association départementale Isère Drac Romanche ) is a public administrative establishment in France formed by the Conseil d'État in 1936. Its purpose is to maintain the system of flood-risk protection in the plains of the Isère, Drac, and Romanche rivers by pr... | https://en.wikipedia.org/wiki/Association_départementale_Isère_Drac_Romanche |
The Association for Automated Reasoning ( AAR ) is a non-profit corporation that serves as an association of researchers working on automated theorem proving , automated reasoning , and related fields. It organizes the CADE and IJCAR conferences and publishes a roughly quarterly newsletter.
The website of the associat... | https://en.wikipedia.org/wiki/Association_for_Automated_Reasoning |
The Association for Laboratory Medicine (previously the Association for Clinical Biochemistry and Laboratory Medicine) is a United Kingdom -based learned society dedicated to the practice and promotion of laboratory medicine which consists of the clinical biochemistry , immunology and microbiology professions. It was f... | https://en.wikipedia.org/wiki/Association_for_Clinical_Biochemistry_and_Laboratory_Medicine |
The Association for Computers and the Humanities ( ACH ) is the primary international professional society for digital humanities . ACH was founded in 1978. [ 1 ] According to the official website, the organization "support[s] and disseminate[s] research and cultivate[s] a vibrant professional community through confere... | https://en.wikipedia.org/wiki/Association_for_Computers_and_the_Humanities |
The Association for Consultancy and Engineering ( ACE ) is a British business association in the field of consultancy and engineering .
ACE represents around 400 member companies, large and small, that provide professional engineering expertise in delivering, maintaining and upgrading economic and social infrastructur... | https://en.wikipedia.org/wiki/Association_for_Consultancy_and_Engineering |
The Association for Decentralised Energy ( ADE ), formerly the Combined Heat and Power Association , is an advocate of an integrated approach to delivering energy locally. The ADE was founded in 1967 as the District Heating Association, becoming the Combined Heat and Power Association in 1983, and was then renamed to t... | https://en.wikipedia.org/wiki/Association_for_Decentralised_Energy |
The Association for Diagnostics & Laboratory Medicine (formerly known as the American Association for Clinical Chemistry or AACC ) is a global scientific society dedicated to clinical laboratory science and its application to healthcare. ADLM's current president is Octavia M. Peck Palmer, PhD, FAAC, and the association... | https://en.wikipedia.org/wiki/Association_for_Diagnostics_&_Laboratory_Medicine |
The Association for History and Computing (AHC) was an organization dedicated to the use of computers in historical research. [ 1 ]
The AHC was an international organization with the aim of promoting the use of computers in all types of historical study, both for teaching and research.
It was originally proposed at a... | https://en.wikipedia.org/wiki/Association_for_History_and_Computing |
The Association for Information Systems (AIS) is an international, not-for-profit , professional association for scholars of information systems that was established in 1994. [ 2 ] [ 3 ] The association publishes journals, organizes conferences, and provides a forum for information systems professors and managers. It h... | https://en.wikipedia.org/wiki/Association_for_Information_Systems |
The Association for Logic, Language and Information ( FoLLI ) is an international, especially European, learned society . It was founded in 1991 "to advance the practicing of research and education on the interfaces between Logic, Linguistics, Computer Science and Cognitive Science and related disciplines." The academi... | https://en.wikipedia.org/wiki/Association_for_Logic,_Language_and_Information |
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