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In mathematics, Zolotarev polynomials are polynomials used in approximation theory . They are sometimes used as an alternative to the Chebyshev polynomials where accuracy of approximation near the origin is of less importance. Zolotarev polynomials differ from the Chebyshev polynomials in that two of the coefficients... | https://en.wikipedia.org/wiki/Zolotarev_polynomials |
A zombie satellite is a satellite that begins communicating again after an extended period of inactivity. It is a type of space debris , which describes all defunct human-made objects in outer space . At the end of their service life , the majority of satellites suffer from orbital decay and are destroyed by the heat o... | https://en.wikipedia.org/wiki/Zombie_satellite |
In paleontology , a zombie taxon [ 1 ] [ 2 ] (plural zombie taxa ) or the zombie effect refers to a fossil that was washed out of sediments and re-deposited in rocks and/or sediments millions of years younger. [ 3 ] That basic mistake in the interpretation of the age of the fossil leads to its title, [ 4 ] in that the ... | https://en.wikipedia.org/wiki/Zombie_taxon |
A zome is a building designed using geometries different from of a series of rectangular boxes, used in a typical house or building. [ 1 ] The word zome was coined in 1968 by Nooruddeen Durkee (then Steve Durkee), combining the words dome and zonohedron . [ 2 ] One of the earliest models became a large climbing structu... | https://en.wikipedia.org/wiki/Zome_(architecture) |
Zometool is a construction set toy that had been created by a collaboration of Steve Baer (the creator of Zome architecture) , artist Clark Richert , Paul Hildebrandt (the present CEO of Zometool), and co-inventor Marc Pelletier. [ 1 ] [ 2 ] [ 3 ] It is manufactured by Zometool, Inc. According to the company, Zometool ... | https://en.wikipedia.org/wiki/Zometool |
Zonal and meridional flow are directions and regions of fluid flow on a globe . Zonal flow follows a pattern along latitudinal lines, latitudinal circles or in the west–east direction. [ 1 ] Meridional flow follows a pattern from north to south, or from south to north, along the Earth's longitude lines, longitudinal ci... | https://en.wikipedia.org/wiki/Zonal_and_meridional_flow |
In magnetic confinement fusion the zonal direction primarily connotes the poloidal direction (i.e. the short way around the torus ), the corresponding coordinate being denoted by y in the slab approximation or θ in magnetic coordinates. However, in the fusion context, usage is restricted to the context of zonal plasma ... | https://en.wikipedia.org/wiki/Zonal_and_poloidal |
In mathematics , a zonal polynomial is a multivariate symmetric homogeneous polynomial . The zonal polynomials form a basis of the space of symmetric polynomials. Zonal polynomials appear in special functions with matrix argument which on the other hand appear in matrixvariate distributions such as the Wishart distribu... | https://en.wikipedia.org/wiki/Zonal_polynomial |
Zone Routing Protocol, or ZRP is a hybrid wireless networking routing protocol that uses both proactive and reactive routing protocols when sending information over the network. ZRP was designed to speed up delivery and reduce processing overhead by selecting the most efficient type of protocol to use throughout the r... | https://en.wikipedia.org/wiki/Zone_Routing_Protocol |
Zone axis , a term sometimes used to refer to "high-symmetry" orientations in a crystal, most generally refers to any direction referenced to the direct lattice (as distinct from the reciprocal lattice ) of a crystal in three dimensions. It is therefore indexed with direct lattice indices, instead of with Miller indice... | https://en.wikipedia.org/wiki/Zone_axis |
A zone valve is a specific type of valve used to control the flow of water or steam in a hydronic heating or cooling system.
In the interest of improving efficiency and occupant comfort, such systems are commonly divided up into multiple zones. [ 1 ] For example, in a house, the main floor may be served by one heating... | https://en.wikipedia.org/wiki/Zone_valve |
A zoo (short for zoological garden ; also called an animal park or menagerie ) is a facility in which animals are kept within enclosures for public exhibition and often bred for conservation purposes. [ 1 ]
The term zoological garden refers to zoology , the study of animals. The term is derived from the Ancient Greek ... | https://en.wikipedia.org/wiki/Zoo |
zoo is a data compression program and format developed by Rahul Dhesi in the mid-1980s. The format is based on the LZW compression algorithm and compressed files are identified by the .zoo file extension. It is no longer widely used. Program source code was originally published on the comp.sources.misc Usenet newsgroup... | https://en.wikipedia.org/wiki/Zoo_(file_format) |
A zoo blot or garden blot is a type of Southern blot that demonstrates the similarity between specific, usually protein-coding, DNA sequences of different species. A zoo blot compares animal species while a garden blot compares plant species. The purpose of the zoo blot is to detect the conservation of the gene(s) of i... | https://en.wikipedia.org/wiki/Zoo_blot |
The zoo hypothesis speculates on the assumed behavior and existence of technologically advanced extraterrestrial life and the reasons they refrain from contacting Earth . It is one of many theoretical explanations for the Fermi paradox . The hypothesis states that extraterrestrial life intentionally avoids communicatio... | https://en.wikipedia.org/wiki/Zoo_hypothesis |
Zooarchaeology or archaeozoology merges the disciplines of zoology and archaeology , focusing on the analysis of animal remains within archaeological sites. This field, managed by specialists known as zooarchaeologists or faunal analysts, examines remnants such as bones, shells, hair, chitin , scales, hides, and protei... | https://en.wikipedia.org/wiki/Zooarchaeology |
Zooflagellates are single-celled eukaryotes with flagella (i.e., flagellates ). They are heterotrophic flagellates, as opposed to phytoflagellates , which are photosynthetic . [ 1 ] The term "zooflagellate" is also used to refer to reproductive cells or zoospores belonging to multicellular organisms , such as fungi . [... | https://en.wikipedia.org/wiki/Zooflagellate |
Zoogeography is the branch of the science of biogeography that is concerned with geographic distribution (present and past) of animal species . [ 1 ]
As a multifaceted field of study, zoogeography incorporates methods of molecular biology, genetics, morphology, phylogenetics , and Geographic Information Systems (GIS) ... | https://en.wikipedia.org/wiki/Zoogeography |
The Zoological Survey of India ( ZSI ), founded on 1 July 1916 by the Ministry of Environment, Forest and Climate Change of the Government of India as a premier Indian organisation in zoological research and studies to promote the survey, exploration and research of the Indian wildlife .
The annals of (ZSI) [ 2 ] refl... | https://en.wikipedia.org/wiki/Zoological_Survey_of_India |
A zoological specimen is an animal or part of an animal preserved for scientific use.
Various uses are: to verify the identity of a ( species ), to allow study, increase public knowledge of zoology .
Zoological specimens are extremely diverse. Examples are bird and mammal study skins, mounted specimens , skeletal mater... | https://en.wikipedia.org/wiki/Zoological_specimen |
Zoology ( UK : / z u ˈ ɒ l ə dʒ i / zoo- OL -ə-jee , US : / z oʊ ˈ ɒ l ə dʒ i / zoh- OL -ə-jee ) [ 1 ] is the scientific study of animals . Its studies include the structure , embryology , classification , habits , and distribution of all animals, both living and extinct , and how they interact with their ecosystems . ... | https://en.wikipedia.org/wiki/Zoology |
Zoombak Inc was a U.S.-based company which developed GPS tracking devices for people and items. [ 1 ] It used satellite-enabled GPS and a location network server for tracking. In 2011, Securus, Inc. acquired Zoombak , LLC from TruePosition, Inc., a subsidiary of Liberty Media . [ 2 ]
In March 2015 it was announced tha... | https://en.wikipedia.org/wiki/Zoombak |
Zoombombing or Zoom raiding [ 1 ] is the unwanted, disruptive intrusion, generally by Internet trolls , into a video-conference call. In a typical Zoombombing incident, a teleconferencing session is hijacked by the insertion of material that is lewd , obscene , or offensive in nature, typically resulting in the shutdow... | https://en.wikipedia.org/wiki/Zoombombing |
Zooniverse is a citizen science web portal owned and operated by the Citizen Science Alliance. It is home to some of the Internet's largest, most popular and most successful citizen science projects . [ 3 ] The organization grew from the original Galaxy Zoo project and now hosts dozens of projects which allow volunteer... | https://en.wikipedia.org/wiki/Zooniverse |
Zoopark-1 ( Russian : Зоопарк , lit. 'zoo') 1L219 is a counter-battery radar system developed by Almaz-Antey for the Soviet Armed Forces . It is a mobile active electronically scanned array radar (based on a tracked MT-LBu chassis) for the purpose of enemy field-artillery acquisition. The system can detect mortar shell... | https://en.wikipedia.org/wiki/Zoopark-1 |
A zoophyte (animal-plant) is an obsolete term for an organism thought to be intermediate between animals and plants, or an animal with plant-like attributes or appearance. In the 19th century they were reclassified as Radiata which included various taxa, a term superseded by Coelenterata referring more narrowly to the ... | https://en.wikipedia.org/wiki/Zoophyte |
A zoospore is a motile asexual spore that uses a flagellum for locomotion in aqueous or moist environments. [ 1 ] Also called a swarm spore, these spores are created by some protists , bacteria , and fungi to propagate themselves. Certain zoospores are infectious and transmittable, [ 1 ] such as Batrachochytrium dendro... | https://en.wikipedia.org/wiki/Zoospore |
Zoothamnium niveum is a species of ciliate protozoan which forms feather-shaped colonies in marine coastal environments. The ciliates form a symbiosis with sulfur-oxidizing chemosynthetic bacteria of the species " Candidatus Thiobios zoothamnicoli", which live on the surface of the colonies and give them their unusual ... | https://en.wikipedia.org/wiki/Zoothamnium_niveum |
Zootope is the total habitat available for colonisation within any certain ecotope or biotope by animal life. The community of animals so established constitutes the zoocoenosis of that ecotope.
All these words (ecotope, biotope, zootope and others) describe environmental niches at very small scales of consideration. ... | https://en.wikipedia.org/wiki/Zootope |
Zooxanthellae ( / ˌ z oʊ ə z æ n ˈ θ ɛ l iː / ; sg. zooxanthella ) is a colloquial term for single-celled photosynthetic organisms that are able to live in symbiosis with diverse marine invertebrates including corals , jellyfish , demosponges , and nudibranchs . Most known zooxanthellae are in the dinoflagellate genus ... | https://en.wikipedia.org/wiki/Zooxanthellae |
A Zores section (also: Z-section ) was a railway beam section designed by French engineer, Charles Ferdinand Zores [ fr ] , in the second half of the 19th century for use in the supporting frames of various railway structures. [ 1 ] They were very common in France. In other countries, such as Germany, the originally de... | https://en.wikipedia.org/wiki/Zores_section |
In mathematical analysis , Zorich's theorem was proved by Vladimir A. Zorich in 1967. [ 1 ] The result was conjectured by M. A. Lavrentev in 1938. [ 2 ]
Every locally homeomorphic quasiregular mapping f : R n → R n {\displaystyle f:R^{n}\rightarrow R^{n}} for n ≥ 3 {\displaystyle n\geq 3} , is a homeomorphism of R n {... | https://en.wikipedia.org/wiki/Zorich's_theorem |
Zorn's lemma , also known as the Kuratowski–Zorn lemma , is a proposition of set theory . It states that a partially ordered set containing upper bounds for every chain (that is, every totally ordered subset ) necessarily contains at least one maximal element .
The lemma was proved (assuming the axiom of choice ) by K... | https://en.wikipedia.org/wiki/Zorn's_lemma |
Zirconium tungstate is the zirconium salt of tungstic acid with the formula Zr(WO 4 ) 2 . The phase formed at ambient pressure by reaction of ZrO 2 and WO 3 is a metastable cubic phase , which has negative thermal expansion characteristics, namely it shrinks over a wide range of temperatures when heated. [ 2 ] In contr... | https://en.wikipedia.org/wiki/Zr(WO4)2 |
Zirconium(IV) bromide is the inorganic compound with the formula ZrBr 4 . This colourless solid is the principal precursor to other Zr–Br compounds.
ZrBr 4 is prepared by the action of bromine on zirconium oxide via a carbothermic reaction : [ 1 ]
Like many related tetrahalides, it is purified by sublimation .
It ca... | https://en.wikipedia.org/wiki/ZrBr4 |
Zirconium(III) chloride is an inorganic compound with formula ZrCl 3 . It is a blue-black solid that is highly sensitive to air .
The material was first claimed by Ruff and Wallstein who reduced zirconium tetrachloride with aluminium to give impure samples. [ 4 ] Subsequently, the problem with aluminium contamination ... | https://en.wikipedia.org/wiki/ZrCl3 |
Zirconium(IV) chloride , also known as zirconium tetrachloride , ( Zr Cl 4 ) is an inorganic compound frequently used as a precursor to other compounds of zirconium. This white high-melting solid hydrolyzes rapidly in humid air.
Unlike molecular TiCl 4 , solid ZrCl 4 adopts a polymeric structure wherein each Zr is oct... | https://en.wikipedia.org/wiki/ZrCl4 |
Zirconium(IV) fluoride describes members of a family inorganic compounds with the formula Zr F 4 (H 2 O) x . All are colorless, diamagnetic solids. Anhydrous Zirconium(IV) fluoride is a component of ZBLAN fluoride glass . [ 2 ]
Three crystalline phases of ZrF 4 have been reported, α ( monoclinic ), β ( tetragonal , P... | https://en.wikipedia.org/wiki/ZrF4 |
Zirconium(II) hydride is a molecular chemical compound with the chemical formula Zr H 2 . It is a grey crystalline solid or dark gray to black powder. [ 4 ] It has been prepared by laser ablation and isolated at low temperature. [ 6 ]
Zirconium(II) hydride has repeatedly been the subject of Dirac – Hartree–Fock relati... | https://en.wikipedia.org/wiki/ZrH2 |
Zirconium(IV) iodide is the chemical compound with the formula Zr I 4 . It is the most readily available iodide of zirconium. It is an orange-coloured solid that degrades in the presence of water. The compound was once prominent as an intermediate in the purification of zirconium metal.
Like most binary metal halides,... | https://en.wikipedia.org/wiki/ZrI4 |
Zirconium dioxide ( ZrO 2 ), sometimes known as zirconia (not to be confused with zirconium silicate or zircon ), is a white crystalline oxide of zirconium . Its most naturally occurring form, with a monoclinic crystalline structure , is the mineral baddeleyite . A dopant [ clarification needed ] stabilized cubic struc... | https://en.wikipedia.org/wiki/ZrO2 |
Zirconyl chloride is the inorganic compound with the formula of [Zr 4 (OH) 8 (H 2 O) 16 ]Cl 8 (H 2 O) 12 , more commonly written ZrOCl 2 ·8H 2 O, and referred to as zirconyl chloride octahydrate. It is a white solid and is the most common water-soluble derivative of zirconium . A compound with the formula ZrOCl 2 has ... | https://en.wikipedia.org/wiki/ZrOCl2 |
Zirconium(IV) sulfide is the inorganic compound with the formula Zr S 2 . It is a violet-brown solid. It adopts a layered structure similar to that of cadmium iodide .
Like the closely related titanium disulfide , ZrS 2 is prepared by heating sulfur and zirconium metal. It can be purified by vapor transport using io... | https://en.wikipedia.org/wiki/ZrS2 |
Zirconium(4+) orthosilicate
Zirconium silicate , also zirconium orthosilicate , ZrSiO 4 , is a chemical compound , a silicate of zirconium . It occurs in nature as zircon , a silicate mineral . Powdered zirconium silicate is also known as zircon flour.
Zirconium silicate is usually colorless, but impurities induce va... | https://en.wikipedia.org/wiki/ZrSiO4 |
Zirconium silicon sulfide ( ZrSiS ) is a crystalline layered Dirac semi-metal compound of zirconium , silicon and sulfur . [ 1 ] Its crystals are made from planes of five single-atom layers of each element in the order S-Zr-Si-Zr-S, with the single element planes connected to their neighbors by van der Waals forces . [... | https://en.wikipedia.org/wiki/ZrSiS |
Zirconium tungstate is the zirconium salt of tungstic acid with the formula Zr(WO 4 ) 2 . The phase formed at ambient pressure by reaction of ZrO 2 and WO 3 is a metastable cubic phase , which has negative thermal expansion characteristics, namely it shrinks over a wide range of temperatures when heated. [ 2 ] In contr... | https://en.wikipedia.org/wiki/ZrW2O8 |
In number theory , Zsigmondy's theorem , named after Karl Zsigmondy , states that if a > b > 0 {\displaystyle a>b>0} are coprime integers , then for any integer n ≥ 1 {\displaystyle n\geq 1} , there is a prime number p (called a primitive prime divisor ) that divides a n − b n {\displaystyle a^{n}-b^{n}} and does not d... | https://en.wikipedia.org/wiki/Zsigmondy's_theorem |
Zstandard is a lossless data compression algorithm developed by Yann Collet at Facebook . Zstd is the corresponding reference implementation in C , released as open-source software on 31 August 2016. [ 3 ] [ 4 ]
The algorithm was published in 2018 as RFC 8478 , which also defines an associated media type "application/... | https://en.wikipedia.org/wiki/Zstd |
In mathematics , L 2 cohomology is a cohomology theory for smooth non-compact manifolds M with Riemannian metric . It is defined in the same way as de Rham cohomology except that one uses square-integrable differential forms . The notion of square-integrability makes sense because the metric on M gives rise to a norm o... | https://en.wikipedia.org/wiki/Zucker_conjecture |
Zuclopenthixol (brand names Cisordinol , Clopixol and others), also known as zuclopentixol , is a medication used to treat schizophrenia and other psychoses . It is classed, pharmacologically, as a typical antipsychotic . Chemically it is a thioxanthene . It is the cis - isomer of clopenthixol (Sordinol, Ciatyl). [ 3 ]... | https://en.wikipedia.org/wiki/Zuclopenthixol |
Zuhair Fayez Partnership ( ZFP ) ( Arabic : شركة زهير فايز ومشاركوه ), formerly Zuhair Fayez and Associates (ZFA), is an Architectural, Engineering, Project Management, Construction Management, and Engineering Information System consultancy firm in the Kingdom of Saudi Arabia .
Zuhair Fayez Partnership was established... | https://en.wikipedia.org/wiki/Zuhair_Fayez_Partnership |
Zuzanna Stefania Siwy (born 1972) is a Polish–American chemist at the University of California, Irvine . Her research considers synthetic nanopores and their application in ionic devices. She is a Fellow of the American Physical Society , American Association for the Advancement of Science and Foundation for Polish Sci... | https://en.wikipedia.org/wiki/Zuzanna_S._Siwy |
The Zwanzig projection operator is a mathematical device used in statistical mechanics . [ 1 ] This projection operator acts in the linear space of phase space functions and projects onto the linear subspace of "slow" phase space functions. It was introduced by Robert Zwanzig to derive a generic master equation . It is... | https://en.wikipedia.org/wiki/Zwanzig_projection_operator |
The Zwikker reagent is used as a simple spot-test to presumptively identify barbiturates . It is composed of a mixture of two solutions. Part A is 0.5 g of copper (II) sulfate in 100 ml of distilled water . Part B consists of 5% pyridine (v/v) in chloroform. [ 1 ] [ 2 ] One drop of each is added to the substance to be ... | https://en.wikipedia.org/wiki/Zwikker_reagent |
In coding theory , the Zyablov bound is a lower bound on the rate r {\displaystyle r} and relative distance δ {\displaystyle \delta } that are achievable by concatenated codes .
The bound states that there exists a family of q {\displaystyle q} -ary (concatenated, linear) codes with rate r {\displaystyle r} and relati... | https://en.wikipedia.org/wiki/Zyablov_bound |
The term zygoma generally refers to the zygomatic bone , a bone of the human skull that is commonly referred to as the cheekbone or malar bone, but it may also refer to: | https://en.wikipedia.org/wiki/Zygoma |
A zygospore is a diploid reproductive stage in the life cycle of many fungi and protists . Zygospores are created by the nuclear fusion of haploid cells. In fungi, zygospores are formed in zygosporangia after the fusion of specialized budding structures, from mycelia of the same (in homothallic fungi) or different ma... | https://en.wikipedia.org/wiki/Zygospore |
A zygote ( / ˈ z aɪ ˌ ɡ oʊ t / ⓘ ; from Ancient Greek ζυγωτός (zygōtós) ' joined, yoked ' , from ζυγοῦν (zygoun) ' to join, to yoke ' ) [ 1 ] is a eukaryotic cell formed by a fertilization event between two gametes . The zygote's genome is a combination of the DNA in each gamete, and contains all of the genetic informa... | https://en.wikipedia.org/wiki/Zygote |
Zygotene (from greek "paired threads" [ 1 ] ) is the second stage of prophase I during meiosis , the specialized cell division that reduces the chromosome number by half to produce haploid gametes. It follows the Leptotene stage and is followed by Pachytene stage.
The key event during zygotene is the completion of syn... | https://en.wikipedia.org/wiki/Zygotene |
Zymoblot is the fastest available microtechnique to detect gene expression or enzyme activity in any biological specimen. The technique was invented by Professor Elsayed Elsayed Wagih in collaboration with Professor Jacqueline Fletcher of the Department of Plant Pathology, Noble Research Centre , Oklahoma State Univers... | https://en.wikipedia.org/wiki/Zymoblot |
Zymography is an electrophoretic technique for the detection of hydrolytic enzymes , based on the substrate repertoire of the enzyme. Three types of zymography are used; in gel zymography, in situ zymography and in vivo zymography. [ 2 ] For instance, gelatin embedded in a polyacrylamide gel will be digested by active... | https://en.wikipedia.org/wiki/Zymography |
Zymology , also known as zymurgy , [ a ] is an applied science that studies the biochemical process of fermentation and its practical uses. Common topics include the selection of fermenting yeast and bacteria species and their use in brewing , wine making , fermenting milk , and the making of other fermented foods .
F... | https://en.wikipedia.org/wiki/Zymology |
Read the Wiktionary entry "zymoscope"
You can also: | https://en.wikipedia.org/wiki/Zymoscope |
Ádám István Mechler is a materials scientist and academic most known for his research on intermolecular interactions in physical chemistry , as well as on molecular machines , hierarchical metamaterials , and self-assembling systems inspired by biology . [ 1 ] He is a professor of Chemistry at La Trobe University , Aus... | https://en.wikipedia.org/wiki/Ádám_Mechler |
Ágnes Szendrei is a Hungarian-American mathematician whose research concerns clones , the congruence lattice problem , and other topics in universal algebra . She is a professor of mathematics at the University of Colorado Boulder , [ 1 ] and the author of the well-cited book Clones in Universal Algebra (1986). [ 2 ] I... | https://en.wikipedia.org/wiki/Ágnes_Szendrei |
Álvaro Ríos Poveda (born 3 February 1974, Cali , Colombia ) is a Colombian electronic engineer, university professor, and researcher who specializes in biomedical engineering and mechatronics . He has performed research on myoelectric prostheses, sensory feedback, and bionic vision technologies. [ 1 ]
He began his stu... | https://en.wikipedia.org/wiki/Álvaro_Ríos_Poveda |
The ÄKTA explorer was the first high end FPLC ( Fast Protein Liquid Chromatography ) system that was developed for Life Science research by the Swedish company Pharmacia in 1994. Its purpose was to simplify and automatize protein purification. It was followed by a line of similar devices (the "Äkta" line). [ 1 ] The pr... | https://en.wikipedia.org/wiki/Äkta_Explorer |
ÉLECTRE is a family of multi-criteria decision analysis (MCDA) methods that originated in Europe in the mid-1960s. The acronym ÉLECTRE stands for: ÉLimination Et Choix Traduisant la REalité ("Elimination and Choice Translating Reality").
The method was first proposed by Bernard Roy and his colleagues at SEMA consulta... | https://en.wikipedia.org/wiki/ÉLECTRE |
The École Nationale Supérieure d'Électrochimie et d'Électrométallurgie de Grenoble , or ENSEEG , was one of the French Grandes écoles of engineering (engineering schools). It has been created in 1921 under the name Institut d’électrochimie et d’électrométallurgie (IEE) (Institute of Electrochemistry and Electrometallu... | https://en.wikipedia.org/wiki/École_Nationale_Supérieure_d'Électrochimie_et_d'Électrométallurgie_de_Grenoble |
The National School of Applied Sciences Sciences in Khouribga(ENSA Khouribga)' is a Moroccan public engineering school within the Sultan Moulay Souliman University of Beni Mellal . It was created in 2007 to support the government's commitment under the National Training Initiative of 10,000 engineers by 2010. It trains... | https://en.wikipedia.org/wiki/École_nationale_des_sciences_appliquées_de_Khouribga |
The École nationale des sciences appliquées de Kénitra ( Arabic : المدرسة الوطنية للعلوم التطبيقية القنيطرة ) is a Moroccan engineering school founded in 2008 by a partnership between the University Ibn Tofail in Kenitra ( جامعة ابن طفيل ) and the Institut national des sciences appliquées de Lyon .
It is a Moroccan pu... | https://en.wikipedia.org/wiki/École_nationale_des_sciences_appliquées_de_Kénitra |
The École nationale supérieure d'ingénieurs de constructions aéronautiques ( French pronunciation: [ekɔl nɑsjɔnal sypeʁjœʁ dɛ̃ʒenjœʁ də kɔ̃stʁyksjɔ̃ aeʁɔnotik] ; meaning "National Higher School of aeronautical constructions"), or ENSICA , was a French engineering school founded in 1945. It was located in Toulouse . In ... | https://en.wikipedia.org/wiki/École_nationale_supérieure_d'ingénieurs_de_constructions_aéronautiques |
The network of Écoles nationales des sciences appliquées (ENSA, lit. ' National Schools of Applied Sciences ' ) is a group of higher education Moroccan public schools delivering engineering courses under the system of French grandes écoles . [ 1 ] It is the largest network of engineering schools in Morocco. The network... | https://en.wikipedia.org/wiki/Écoles_nationales_des_sciences_appliquées |
Éleuthère Irénée du Pont de Nemours ( / dj uː ˈ p ɒ n t , ˈ dj uː p ɒ n t / dew- PONT , DEW -pont , [ 1 ] French: [eløtɛʁ iʁene dy pɔ̃ d(ə) nəmuʁ] ; 24 June 1771 – 31 October 1834) was a French-American chemist and industrialist who founded the gunpowder manufacturer E. I. du Pont de Nemours and Company . His descendan... | https://en.wikipedia.org/wiki/Éleuthère_Irénée_du_Pont |
Émile P. Torres (born 2 July 1982), formerly known as Phil Torres , is an American philosopher, intellectual historian , and activist. Their research focuses on eschatology , existential risk , and human extinction . Along with computer scientist Timnit Gebru , Torres coined the acronym neologism " TESCREAL " to critic... | https://en.wikipedia.org/wiki/Émile_P._Torres |
The Étard reaction is a chemical reaction that involves the direct oxidation of an aromatic or heterocyclic bound methyl group to an aldehyde using chromyl chloride . [ 1 ] [ 2 ] [ 3 ] For example, toluene can be oxidized to benzaldehyde .
It is named for the French chemist Alexandre Léon Étard (5 January 1852, Alenço... | https://en.wikipedia.org/wiki/Étard_reaction |
Étienne Bézout ( French: [bezu] ; 31 March 1730 – 27 September 1783) was a French mathematician who was born in Nemours , Seine-et-Marne , France , and died in Avon (near Fontainebleau ), France.
In 1758 Bézout was elected an adjoint in mechanics of the French Academy of Sciences . Besides numerous minor works, he wr... | https://en.wikipedia.org/wiki/Étienne_Bézout |
Étienne Henri Gilson ( French: [ʒilsɔ̃] ; 13 June 1884 – 19 September 1978) was a French philosopher and historian of philosophy . A scholar of medieval philosophy , he originally specialised in the thought of Descartes ; he also philosophized in the tradition of Thomas Aquinas , although he did not consider himself a ... | https://en.wikipedia.org/wiki/Étienne_Gilson |
The Överkalix study ( Swedish : Överkalixstudien ) was a study conducted on the physiological effects of various environmental factors on transgenerational epigenetic inheritance. The study was called " Cardiovascular and diabetes mortality determined by nutrition during parents’ and grandparents’ slow growth period "... | https://en.wikipedia.org/wiki/Överkalix_study |
Øystein Linnebo (born 1971) is a Norwegian philosopher . As of 2020 he is currently employed in the Department of Philosophy at the University of Oslo , having earlier held a position as Professor of Philosophy at Birkbeck College , University of London . He is a fellow of the Norwegian Academy of Science and Letters .... | https://en.wikipedia.org/wiki/Øystein_Linnebo |
Āryabhata's sine table is a set of twenty-four numbers given in the astronomical treatise Āryabhatiya composed by the fifth century Indian mathematician and astronomer Āryabhata (476–550 CE), for the computation of the half-chords of a certain set of arcs of a circle. The set of numbers appears in verse 12 in Chapter... | https://en.wikipedia.org/wiki/Āryabhaṭa's_sine_table |
Ćmielów figurines [ 1 ] are objects of small-scale (decorative) ceramic sculpture created in Poland during the 1950s and 1960s, reflecting the style of the so-called New Look or the Post-Sevastopol Thaw, cast in porcelain or porcelainite . They were designed by artists employed at the Institute of Industrial Design [ p... | https://en.wikipedia.org/wiki/Ćmielów_figurines |
In real algebraic geometry , the Łojasiewicz inequality , named after Stanisław Łojasiewicz , gives an upper bound for the distance of a point to the nearest zero of a given real analytic function . Specifically, let ƒ : U → R be a real analytic function on an open set U in R n , and let Z be the zero locus of ƒ. Assu... | https://en.wikipedia.org/wiki/Łojasiewicz_inequality |
The Łoś–Tarski theorem is a theorem in model theory , a branch of mathematics , that states that the set of formulas preserved under taking substructures is exactly the set of universal formulas. [ 1 ] The theorem was discovered by Jerzy Łoś and Alfred Tarski .
Let T {\displaystyle T} be a theory in a first-order logi... | https://en.wikipedia.org/wiki/Łoś–Tarski_preservation_theorem |
In model theory , a branch of mathematical logic , the Łoś–Vaught test is a criterion for a theory to be complete , unable to be augmented without becoming inconsistent. For theories in classical logic , this means that for every sentence , the theory contains either the sentence or its negation but not both.
A theory... | https://en.wikipedia.org/wiki/Łoś–Vaught_test |
In the Babylonian magico-medical tradition , Šulak is the lurker of the bathroom or the demon of the privy . Šulak appears in the Babylonian Diagnostic Handbook (Tablet XXVII), in which various diseases are described and attributed to the hand of a god , goddess , or spirit. A lurker is a type of demon who lies in wait... | https://en.wikipedia.org/wiki/Šulak |
Ștefan Emilian (August 8, 1819 – November 1899) was an Imperial Austrian -born Romanian mathematician and architect.
Born in Bonchida, Kolozs County (now Bonțida , Cluj County ), in the Principality of Transylvania , he was given the surname Kertész as a child, although his birth name was Emilian . He attended high sc... | https://en.wikipedia.org/wiki/Ștefan_Emilian |
α,β-Unsaturated carbonyl compounds are organic compounds with the general structure (O=CR)−C α =C β −R. [ 1 ] [ 2 ] Such compounds include enones and enals , but also carboxylic acids and the corresponding esters and amides. In these compounds, the carbonyl group is conjugated with an alkene (hence the adjective unsatu... | https://en.wikipedia.org/wiki/Α,β-Unsaturated_carbonyl_compound |
The α-aminoadipate pathway is a biochemical pathway for the synthesis of the amino acid L - lysine . In the eukaryotes , this pathway is unique to several species of yeast , higher fungi (containing chitin in their cell walls), and the euglenids . [ 1 ] [ 2 ] [ 3 ] [ 4 ] [ 5 ] It has also been reported from bacteria of... | https://en.wikipedia.org/wiki/Α-Aminoadipate_pathway |
α-Endopsychosin is a putative antagonist of the phencyclidine site of the NMDA receptor which was discovered in extracts of porcine brain and may also be endogenous in humans. [ 1 ] [ 2 ] [ 3 ] The compound appears to be a peptide , but has yet to be purified and fully characterized. [ 1 ] [ 3 ]
This biochemistry arti... | https://en.wikipedia.org/wiki/Α-Endopsychosin |
α-Galactosylceramide ( α-GalCer , KRN7000 ) is a synthetic glycolipid derived from structure-activity relationship studies of galactosylceramides isolated from the marine sponge Agelas mauritianus . α-GalCer is a strong immunostimulant and shows potent anti-tumour activity in many in vivo models. [ 1 ]
α-GalCer is a p... | https://en.wikipedia.org/wiki/Α-Galactosylceramide |
α-Halo carboxylic acids and esters are organic compounds with the respective formulas RCHXCO 2 H and RCHXCO 2 R' where R and R' are organic substituents. The X in these compounds is a halide, usually chloride and bromide . These compounds are often used as intermediates in the preparation of more elaborate derivative... | https://en.wikipedia.org/wiki/Α-Halo_carboxylic_acids_and_esters |
In organic chemistry , an α-halo ketone is a functional group consisting of a ketone group or more generally a carbonyl group with an α- halogen substituent . α-Halo ketones are alkylating agents . Prominent α-halo ketones include phenacyl bromide and chloroacetone . [ 1 ]
The general structure is RR′C(X)C(=O)R where... | https://en.wikipedia.org/wiki/Α-Halo_ketone |
α-Hexachlorocyclohexane ( α-HCH ) is an organochloride which is one of the isomers of hexachlorocyclohexane (HCH). [ 1 ] It is a byproduct of the production of the insecticide lindane (γ-HCH) and it is typically still contained in commercial grade lindane used as insecticide. Lindane, however, has not been produced or ... | https://en.wikipedia.org/wiki/Α-Hexachlorocyclohexane |
α-Ketovaleric acid is a keto acid that is found in human blood. [ 1 ] [ 2 ] [ 3 ] Unlike related keto acids, it is not an intermediate or metabolite associated with amino acids and its origin is unknown. [ 4 ]
This biochemistry article is a stub . You can help Wikipedia by expanding it . | https://en.wikipedia.org/wiki/Α-Ketovaleric_acid |
α-Neoendorphin is an endogenous opioid peptide with a decapeptide structure and the amino acid sequence Tyr - Gly -Gly- Phe - Leu - Arg - Lys -Tyr- Pro -Lys. [ 1 ]
α-Neoendorphin is a neuropeptide . Prodynorphin or Proenkephalin B is its precursor. Researchers and anatomists have not yet studied the distribution of α-... | https://en.wikipedia.org/wiki/Α-Neoendorphin |
β-Carbon elimination ( beta -carbon elimination) is a type of reaction in organometallic chemistry wherein an allyl ligand bonded to a metal center is broken into the corresponding metal-bonded alkyl (aryl) ligand and an alkene . [ 1 ] It is a subgroup of elimination reactions. Though less common and less understood th... | https://en.wikipedia.org/wiki/Β-Carbon_elimination |
β-Galactosidase (EC 3.2.1.23, beta-gal or β-gal ; systematic name β- D -galactoside galactohydrolase ) is a glycoside hydrolase enzyme that catalyzes hydrolysis of terminal non-reducing β- D -galactose residues in β- D -galactosides. (This enzyme digests many β-Galactosides, not just lactose. It is sometimes loosely re... | https://en.wikipedia.org/wiki/Β-Galactosidase |
β-Glucosidase ( EC 3.2.1.21 ; systematic name β- D -glucoside glucohydrolase ) is an enzyme that catalyses the following reaction: [ 2 ]
β-Glucosidase is composed of two polypeptide chains. [ 3 ] Each chain is made up of 438 amino acids and constitute a subunit of the enzyme. [ 4 ] Each of these subunits contains an a... | https://en.wikipedia.org/wiki/Β-Glucosidase |
β-Hexachlorocyclohexane ( β-HCH ) is an organochloride which is one of the isomers of hexachlorocyclohexane (HCH). [ 1 ] It is a byproduct of the production of the insecticide lindane (γ-HCH). It is typically constitutes 5–14% of technical-grade lindane, [ 2 ] though it has not been produced or used in the United Stat... | https://en.wikipedia.org/wiki/Β-Hexachlorocyclohexane |
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