id int64 580 79M | url stringlengths 31 175 | text stringlengths 9 245k | source stringlengths 1 109 | categories stringclasses 160
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|---|---|---|---|---|---|
54,035,992 | https://en.wikipedia.org/wiki/Operation%20Snowball%20%28test%29 | Operation Snowball was a conventional explosive test to obtain information on nuclear weapon detonations run by the Defence Research Board with participation from the United Kingdom and United States. A detonation of of TNT was used to study the resulting phenomena. The test was held at the Suffield Experimental Stati... | Operation Snowball (test) | Engineering | 700 |
13,299,905 | https://en.wikipedia.org/wiki/Pyroglutamyl-histidyl-glycine | Pyroglutamyl-histidyl-glycine (pEHG) is an endogenous tripeptide that acts as a tissue-specific antimitotic and selectively inhibits the proliferation of colon epithelial cells. Early research indicated that pEHG had anorectic effects in mice and was possibly involved in the pathophysiology of anorexia nervosa. However... | Pyroglutamyl-histidyl-glycine | Chemistry,Biology | 113 |
53,010,758 | https://en.wikipedia.org/wiki/Short%20range%20order | In crystallography, short range order refers to the regular and predictable arrangement (i.e. crystalline lattice) of atoms over a short distance, usually with one or two atom spacings. However, this regularity described by short-range order does not necessarily apply to a larger area. Examples of materials with short ... | Short range order | Physics | 179 |
32,570,884 | https://en.wikipedia.org/wiki/Audio%20analyzer | An audio analyzer is a test and measurement instrument used to objectively quantify the audio performance of electronic and electro-acoustical devices. Audio quality metrics cover a wide variety of parameters, including level, gain, noise, harmonic and intermodulation distortion, frequency response, relative phase of s... | Audio analyzer | Engineering | 2,418 |
454,896 | https://en.wikipedia.org/wiki/Grignard%20reaction | The Grignard reaction () is an organometallic chemical reaction in which, according to the classical definition, carbon alkyl, allyl, vinyl, or aryl magnesium halides (Grignard reagent) are added to the carbonyl groups of either an aldehyde or ketone under anhydrous conditions. This reaction is important for the format... | Grignard reaction | Chemistry | 991 |
2,295,496 | https://en.wikipedia.org/wiki/Tungsten%28III%29%20oxide | Tungsten(III) oxide (W2O3) is a compound of tungsten and oxygen. It has been reported (2006) as being grown as a thin film by atomic layer deposition at temperatures between 140 and 240 °C using W2(N(CH3)2)6 as a precursor. It is not referred to in major textbooks. Some older literature refers to the compound W2O3 ... | Tungsten(III) oxide | Chemistry | 194 |
52,466,165 | https://en.wikipedia.org/wiki/Testosterone%20isovalerate | Testosterone isovalerate, also known as testosterone isopentanoate, testosterone 17β-isovalerate, and androst-4-en-17β-ol-3-one 17β-isovalerate, is a synthetic, injected anabolic-androgenic steroid (AAS) and an androgen ester – specifically, the C17β isovalerate (isopentanoate) ester of testosterone – which was never m... | Testosterone isovalerate | Chemistry | 172 |
26,856,232 | https://en.wikipedia.org/wiki/Thor%20washing%20machine | The Thor washing machine was the first electric clothes washer sold commercially in the United States. Produced by the Chicago-based Hurley Electric Laundry Equipment Company, the 1907 Thor is believed to be the first electrically powered washer ever manufactured, crediting Hurley as the inventor of the first automati... | Thor washing machine | Physics,Technology | 680 |
1,730,437 | https://en.wikipedia.org/wiki/Mathcad | Mathcad is computer software for the verification, validation, documentation and re-use of mathematical calculations in engineering and science, notably mechanical, chemical, electrical, and civil engineering. Released in 1986 on DOS, it introduced live editing (WYSIWYG) of typeset mathematical notation in an interacti... | Mathcad | Mathematics | 1,180 |
68,892,195 | https://en.wikipedia.org/wiki/Photo%20response%20non-uniformity | Photo response non-uniformity, pixel response non-uniformity, or PRNU, is a form of fixed-pattern noise related to digital image sensors, as used in cameras and optical instruments. Both CCD and CMOS sensors are two-dimensional arrays of photosensitive cells, each broadly corresponding to an image pixel. Due to the non... | Photo response non-uniformity | Physics,Chemistry | 210 |
381,750 | https://en.wikipedia.org/wiki/Hilbert%27s%20sixteenth%20problem | Hilbert's 16th problem was posed by David Hilbert at the Paris conference of the International Congress of Mathematicians in 1900, as part of his list of 23 problems in mathematics.
The original problem was posed as the Problem of the topology of algebraic curves and surfaces (Problem der Topologie algebraischer Kurve... | Hilbert's sixteenth problem | Physics,Mathematics | 879 |
15,361,791 | https://en.wikipedia.org/wiki/Oscilloscope | An oscilloscope, (formerly known as an
oscillograph), (informally scope or O-scope) is a type of electronic test instrument that graphically displays varying voltages of one or more signals as a function of time. Their main purpose is capturing information on electrical signals for debugging, analysis, or characterizat... | Oscilloscope | Technology,Engineering | 10,760 |
806,208 | https://en.wikipedia.org/wiki/Maria%20de%20Lourdes%20Pintasilgo | Maria de Lourdes Ruivo da Silva de Matos Pintasilgo (; 18 January 1930 – 10 July 2004) was a Portuguese chemical engineer and politician. She was the first and to date only woman to serve as Prime Minister of Portugal, and the second woman to serve as prime minister in Western Europe, after Margaret Thatcher.
Early l... | Maria de Lourdes Pintasilgo | Chemistry | 2,213 |
58,131,299 | https://en.wikipedia.org/wiki/Ramon%20E.%20Moore | Ramon Edgar (Ray) Moore ( ) was an American mathematician, known for his pioneering work in the field of interval arithmetic.
Moore received an AB degree in physics from the University of California, Berkeley in 1950, and a PhD in mathematics from Stanford University in 1963. His early career included work on the ear... | Ramon E. Moore | Technology | 252 |
5,854,581 | https://en.wikipedia.org/wiki/Bi-metallic%20coin | Bi-metallic coins are coins consisting of two (bi-) metals or alloys, generally arranged with an outer ring around a contrasting center. Common circulating examples include the €1, €2, United Kingdom £1 and £2, Canadian $2, South Africa R5, Egyptian £1, Turkish 1 lira and 50 kurus, Indian ₹10 and ₹20, Indonesian Rp1,00... | Bi-metallic coin | Chemistry,Materials_science | 617 |
912,858 | https://en.wikipedia.org/wiki/Jon%20Barwise | Kenneth Jon Barwise (; June 29, 1942 – March 5, 2000) was an American mathematician, philosopher and logician who proposed some fundamental revisions to the way that logic is understood and used.
Education and career
He was born in Independence, Missouri, to Kenneth T. and Evelyn Barwise.
A pupil of Solomon Feferman ... | Jon Barwise | Mathematics | 814 |
2,984,115 | https://en.wikipedia.org/wiki/Aminoglutethimide | Aminoglutethimide (AG), sold under the brand names Elipten, Cytadren, and Orimeten among others, is a medication which has been used in the treatment of seizures, Cushing's syndrome, breast cancer, and prostate cancer, among other indications. It has also been used by bodybuilders, athletes, and other men for muscle-bu... | Aminoglutethimide | Chemistry | 3,215 |
1,201,381 | https://en.wikipedia.org/wiki/Apothecaries%27%20system | The apothecaries' system, or apothecaries' weights and measures, is a historical system of mass and volume units that were used by physicians and apothecaries for medical prescriptions and also sometimes by scientists. The English version of the system is closely related to the English troy system of weights, the pound... | Apothecaries' system | Physics,Mathematics | 6,864 |
23,685,620 | https://en.wikipedia.org/wiki/Flora%20of%20Morocco | Morocco provides a refuge for a rich and diverse flora with about 4,200 taxa, of which 22% (879 taxa) are endemic. The phytogeographic zones of Morocco comprise 8 zones: the Mediterranean zone (central 0–500m, middle 500-1,000m and upper 1,100-1500m), the Cedar zone (1000-2000m), the sub-Alpine zone (2,000-2,500m), the... | Flora of Morocco | Biology | 2,853 |
33,813,990 | https://en.wikipedia.org/wiki/Sylvester%20domain | In mathematics, a Sylvester domain, named after James Joseph Sylvester by , is a ring in which Sylvester's law of nullity holds. This means that if A is an m by n matrix, and B is an n by s matrix over R, then
ρ(AB) ≥ ρ(A) + ρ(B) – n
where ρ is the inner rank of a matrix. The inner rank of an m by n matrix is the smal... | Sylvester domain | Mathematics | 136 |
77,749,655 | https://en.wikipedia.org/wiki/Theophylline/ephedrine | Theophylline ephedrine (), or theophylline/ephedrine, sold under the brand name Franol among others, is a fixed-dose combination formulation of theophylline, an adenosine receptor antagonist, and ephedrine, a norepinephrine releasing agent and indirectly acting sympathomimetic agent, which has been used as a bronchodil... | Theophylline/ephedrine | Chemistry | 512 |
1,726,070 | https://en.wikipedia.org/wiki/Churn%20drill | The churn drill is a large drilling machine that bores large diameter holes in the ground. In mining, they were used to drill into the soft carbonate rocks of lead and zinc hosted regions to extract bulk samples of the ore. Churn drills are also called percussion drills, as they function by lifting and dropping a heavy... | Churn drill | Engineering | 293 |
1,520,732 | https://en.wikipedia.org/wiki/Simon%20Conway%20Morris | Simon Conway Morris (born 1951) is an English palaeontologist, evolutionary biologist, and astrobiologist known for his study of the fossils of the Burgess Shale and the Cambrian explosion. The results of these discoveries were celebrated in Stephen Jay Gould's 1989 book Wonderful Life. Conway Morris's own book on the... | Simon Conway Morris | Biology | 1,703 |
258,901 | https://en.wikipedia.org/wiki/Mutilation | Mutilation or maiming (from the ) is severe damage to the body that has a subsequent harmful effect on an individual's quality of life.
In the modern era, the term has an overwhelmingly negative connotation, referring to alterations that render something inferior, dysfunctional, imperfect, or ugly.
Terminology
In ... | Mutilation | Biology | 1,363 |
42,321,034 | https://en.wikipedia.org/wiki/Diallyl%20trisulfide | Diallyl trisulfide (DATS), also known as Allitridin, is an organosulfur compound with the formula S(SCH2CH=CH2)2. It is one of several compounds produced by hydrolysis of allicin, including diallyl disulfide and diallyl tetrasulfide; DATS is one of the most potent.
Biological applications
DATS has been shown to select... | Diallyl trisulfide | Chemistry | 689 |
699,489 | https://en.wikipedia.org/wiki/Para-Azoxyanisole | para-Azoxyanisole (PAA) is an organic, aromatic compound. Its chemical formula is C14H14N2O3. In a solid state, it appears as a white powder, but when heated it forms a liquid crystal. As one of the first known and most readily prepared liquid crystals, PAA has played an important role in the development of liquid cry... | Para-Azoxyanisole | Chemistry | 137 |
17,639,930 | https://en.wikipedia.org/wiki/List%20of%20Angry%20Video%20Game%20Nerd%20episodes | Angry Video Game Nerd (abbreviated as AVGN) is an American web series of comedy-themed retrogaming reviews, created by and starring James Rolfe. The show revolves around reviews that involve acerbic rants about low quality video games. From the beginning of season 2, new episodes were aired first on GameTrailers.com, b... | List of Angry Video Game Nerd episodes | Technology | 857 |
35,741,235 | https://en.wikipedia.org/wiki/Incyte | Incyte Corporation is an American multinational pharmaceutical company with headquarters in Wilmington, Delaware, and Morges, Switzerland.
The company was created in 2002 through the merger of Incyte Pharmaceuticals, founded in Palo Alto, California in 1991 and Incyte Genomics, Inc. of Delaware. The company currently o... | Incyte | Biology | 642 |
24,113,078 | https://en.wikipedia.org/wiki/Ombrophobe | Ombrophobe or ombrophobous/ombrophobic plant (from Greek ὄμβρος - ombros, "storm of rain" and φόβος - phobos, "fear") is a plant that cannot withstand much rain. A similar term are xerophile and xerophyte.
Ombrophile or ombrophilous/ombrophilic plant is a plant that thrives in abundant amounts of rain.
The terms were... | Ombrophobe | Biology | 147 |
30,501,764 | https://en.wikipedia.org/wiki/Auriscalpium%20vulgare | Auriscalpium vulgare, commonly known as the pinecone mushroom, the cone tooth, or the ear-pick fungus, is a species of fungus in the family Auriscalpiaceae of the order Russulales. It was first described in 1753 by Carl Linnaeus, who included it as a member of the tooth fungi genus Hydnum, but British mycologist Samuel... | Auriscalpium vulgare | Biology | 3,328 |
68,598,894 | https://en.wikipedia.org/wiki/5-MeO-DBT | 5-MeO-DBT (5-Methoxy-N,N-dibutyltryptamine, 5-MeO-BET) is a rare substituted tryptamine derivative, which is thought to be a psychoactive substance and was identified in a designer drug sample by a forensic laboratory in Slovenia in March 2021, although only analytical studies have been conducted and no pharmacological... | 5-MeO-DBT | Chemistry | 178 |
6,196,644 | https://en.wikipedia.org/wiki/Social%20design | Social design is the application of design methodologies in order to tackle complex human issues, placing the social issues as the priority. Historically social design has been mindful of the designer's role and responsibility in society, and of the use of design processes to bring about social change. Social design as... | Social design | Engineering | 2,539 |
66,922,965 | https://en.wikipedia.org/wiki/Les%20Espaces%20d%27Abraxas | Les Espaces d'Abraxas is a high-density housing complex in Noisy-le-Grand, approximately from Paris, France. The building was designed by architect Ricardo Bofill and his architecture practice Ricardo Bofill Taller de Arquitectura (RBTA) in 1978 on behalf of the French government, during a period of increased urbanisa... | Les Espaces d'Abraxas | Engineering | 3,146 |
19,726,765 | https://en.wikipedia.org/wiki/Tag%20%28programming%29 | In programming, a tag is an argument to a subroutine that determines other arguments passed to it, which is used as a way to pass indefinite number of tagged parameters to the subroutine; notably, tags are used for a number of system calls in AmigaOS v2.0 and onwards.
In AmigaOS
In earlier versions of AmigaOS, if a sy... | Tag (programming) | Technology | 475 |
25,447,068 | https://en.wikipedia.org/wiki/SIBLING%20proteins | The family of non-collagenous proteins known as SIBLING proteins, standing for small integrin-binding ligand, N-linked glycoprotein, are components of the extracellular matrix of bone and dentin. Evidence shows that these proteins play key roles in the mineralization of these tissues.
The following are categorized as ... | SIBLING proteins | Chemistry,Biology | 168 |
1,732,846 | https://en.wikipedia.org/wiki/Brill%20tagger | The Brill tagger is an inductive method for part-of-speech tagging. It was described and invented by Eric Brill in his 1993 PhD thesis. It can be summarized as an "error-driven transformation-based tagger". It is:
a form of supervised learning, which aims to minimize error; and,
a transformation-based process, in th... | Brill tagger | Technology | 881 |
12,212,927 | https://en.wikipedia.org/wiki/Application%20portfolio%20management | IT Application Portfolio Management (APM) is a practice that has emerged in mid to large-size information technology (IT) organizations since the mid-1990s. Application Portfolio Management attempts to use the lessons of financial portfolio management to justify and measure the financial benefits of each application i... | Application portfolio management | Technology | 2,820 |
25,000,756 | https://en.wikipedia.org/wiki/C7H15N | {{DISPLAYTITLE:C7H15N}}
The molecular formula C7H15N (molar mass: 113.20 g/mol, exact mass: 113.1204 u) may refer to:
Azocane
Dimethylpiperidines
2,6-Dimethylpiperidine
3,5-Dimethylpiperidine
Molecular formulas | C7H15N | Physics,Chemistry | 80 |
5,437,698 | https://en.wikipedia.org/wiki/James%20K.%20Coyne%20III | James Kitchenman Coyne III (born November 17, 1946) is an American businessman and former politician. From 1981 to 1983, he served one term as a Republican member of the U.S. House of Representatives from Pennsylvania.
Biography
Coyne was born in Farmville, Virginia, and raised in Abington, Pennsylvania, the son of Ja... | James K. Coyne III | Chemistry | 435 |
20,208,066 | https://en.wikipedia.org/wiki/Discovery%20and%20development%20of%20triptans | Triptans are a family of tryptamine-based drugs used as abortive medication in the treatment of migraines and cluster headaches. They are selective 5-hydroxytryptamine/serotonin1B/1D (5-HT1B/1D) agonists. Migraine is a complex disease which affects about 15% of the population and can be highly disabling.
Triptans have ... | Discovery and development of triptans | Chemistry,Biology | 2,822 |
1,683,023 | https://en.wikipedia.org/wiki/Birkhoff%27s%20theorem%20%28electromagnetism%29 | In physics, in the context of electromagnetism, Birkhoff's theorem concerns spherically symmetric static solutions of Maxwell's field equations of electromagnetism.
The theorem is due to George D. Birkhoff. It states that any spherically symmetric solution of the source-free Maxwell equations is necessarily static. P... | Birkhoff's theorem (electromagnetism) | Physics,Materials_science,Mathematics | 415 |
42,110,287 | https://en.wikipedia.org/wiki/Concurrent%20testing | Research and literature on concurrency testing and concurrent testing typically focuses on testing software and systems that use concurrent computing. The purpose is, as with most software testing, to understand the behaviour and performance of a software system that uses concurrent computing, particularly assessing th... | Concurrent testing | Engineering | 735 |
18,119,915 | https://en.wikipedia.org/wiki/S.%20A.%20Choudum | Sheshayya A. Choudum (born 1947) was a professor and a former chair of the department of mathematics at IIT Madras. He has often worked in chromatic numbers, degree sequences, graph enumeration, and bivariegated graphs.
Choudum hails from Manvi, Raichur district, Karnataka. He completed a M.Sc., in Mathematics from Ka... | S. A. Choudum | Mathematics | 266 |
69,296,620 | https://en.wikipedia.org/wiki/Strategic%20stability | Strategic stability is a concept in the international relations indicating a lack of incentives for any party to initiate the nuclear first strike; the term is also used in a broader sense of the state of the international environment helping to avoid a war. Strategic stability characterizes the degree of the deterrenc... | Strategic stability | Chemistry | 2,363 |
186,758 | https://en.wikipedia.org/wiki/Dispensationalism | Dispensationalism is a theological framework for interpreting the Bible which maintains that history is divided into multiple ages called "dispensations" in which God interacts with his chosen people in different ways. It is often distinguished from covenant theology. These are two competing frameworks of Biblical theo... | Dispensationalism | Physics | 7,692 |
1,276,320 | https://en.wikipedia.org/wiki/Proper%20transfer%20function | In control theory, a proper transfer function is a transfer function in which the degree of the numerator does not exceed the degree of the denominator. A strictly proper transfer function is a transfer function where the degree of the numerator is less than the degree of the denominator.
The difference between the de... | Proper transfer function | Mathematics | 269 |
5,775,285 | https://en.wikipedia.org/wiki/Minol%20%28explosive%29 | Minol (pronounced mine-ol) is a military explosive developed by the Admiralty early in the Second World War to augment supplies of trinitrotoluene (TNT) and RDX, which were in short supply. The aluminium component in Minol significantly prolongs the explosive pulse, making it ideal for use in underwater naval weapons ... | Minol (explosive) | Chemistry | 544 |
544,273 | https://en.wikipedia.org/wiki/Spectral%20space | In mathematics, a spectral space is a topological space that is homeomorphic to the spectrum of a commutative ring. It is sometimes also called a coherent space because of the connection to coherent topoi.
Definition
Let X be a topological space and let K(X) be the set of all
compact open subsets of X. Then X is sai... | Spectral space | Mathematics | 579 |
2,574,486 | https://en.wikipedia.org/wiki/Fubini%E2%80%93Study%20metric | In mathematics, the Fubini–Study metric (IPA: /fubini-ʃtuːdi/) is a Kähler metric on a complex projective space CPn endowed with a Hermitian form. This metric was originally described in 1904 and 1905 by Guido Fubini and Eduard Study.
A Hermitian form in (the vector space) Cn+1 defines a unitary subgroup U(n+1) in GL... | Fubini–Study metric | Physics | 2,994 |
2,271,116 | https://en.wikipedia.org/wiki/EFA%20%28mobile%20bridge%29 | The EFA or Engin de Franchissement de l'Avant (forward crossing apparatus) is a field-deployable river crossing vehicle, used by combat engineers in the French Army. Unlike a bridge layer, which transports a bridge that is deployed off of the host vehicle, the EFA itself is a combined pontoon bridge and amphibious vehi... | EFA (mobile bridge) | Engineering | 739 |
1,533,196 | https://en.wikipedia.org/wiki/Photoelasticity | In materials science, photoelasticity describes changes in the optical properties of a material under mechanical deformation. It is a property of all dielectric media and is often used to experimentally determine the stress distribution in a material.
History
The photoelastic phenomenon was first discovered by the Sc... | Photoelasticity | Physics,Chemistry,Materials_science,Engineering | 1,967 |
40,491,703 | https://en.wikipedia.org/wiki/SIMes | SIMes (or H2Imes) is an N-heterocyclic carbene. It is a white solid that dissolves in organic solvents. The compound is used as a ligand in organometallic chemistry. It is structurally related to the more common ligand IMes but with a saturated backbone (the S of SIMes indicates a saturated backbone). It is slightly... | SIMes | Chemistry | 129 |
11,569,748 | https://en.wikipedia.org/wiki/Colletotrichum%20glycines | Colletotrichum glycines is a species of fungus in the family Glomerellaceae. It is a plant pathogen, causing soybean and tomato anthracnose. It is the teleomorph form of Glomerella glycines.
See also
List of soybean diseases
References
Fungal plant pathogens and diseases
Enigmatic Sordariomycetes taxa
Soybean disea... | Colletotrichum glycines | Biology | 96 |
51,594,670 | https://en.wikipedia.org/wiki/Rhopalosiphum%20padi%20virus | Rhopalosiphum padi virus (RhPV) is a member of Dicistroviridae family, which includes cricket paralysis virus (CrPV), Plautia stali intestine virus and Drosophila C virus. Its 5'UTR region contains an internal ribosome entry site (IRES) element with a cross-kingdom activity. It can function efficiently in mammalian, pl... | Rhopalosiphum padi virus | Biology | 169 |
18,717,991 | https://en.wikipedia.org/wiki/QS%20Aquilae | QS Aquilae is a triple or quadruple star system consisting of an eclipsing binary in a 2.5 day orbit around which a third star orbits in 77 years. There is some indication that there is a fourth component with a period of roughly 18 years. Located in the constellation Aquila, its visual magnitude varies from 5.93 to 6.... | QS Aquilae | Astronomy | 167 |
14,467,117 | https://en.wikipedia.org/wiki/Michael%20Hinchey | Michael Gerard Hinchey (born 1969) is an Irish computer scientist and former Director of the Irish Software Engineering Research Centre (Lero), a multi-university research centre headquartered at the University of Limerick, Ireland. He now serves as Head of Department of the Department of Computer Science & Information... | Michael Hinchey | Engineering | 567 |
35,998,312 | https://en.wikipedia.org/wiki/Ion-to-photon%20detector | An ion-to-photon detector (IPD) is a component used for detecting ions in mass spectrometry.
Operation
In an ion-to-photon detector, a photomultiplier tube is coated with a layer of scintillator compound, such as Rhodamine B or CsI. When the ions pass through the mass analyzer of the spectrometer, they strike the scin... | Ion-to-photon detector | Physics,Chemistry | 327 |
8,008,408 | https://en.wikipedia.org/wiki/Pulse%20shaping | In electronics and telecommunications, pulse shaping is the process of changing a transmitted pulses' waveform to optimize the signal for its intended purpose or the communication channel. This is often done by limiting the bandwidth of the transmission and filtering the pulses to control intersymbol interference. Puls... | Pulse shaping | Technology,Engineering | 1,231 |
3,303,981 | https://en.wikipedia.org/wiki/Quantum%20gyroscope | A quantum gyroscope is a very sensitive device to measure angular rotation based on quantum mechanical principles. The first of these was built by Richard Packard and his colleagues at the University of California, Berkeley. The extreme sensitivity means that theoretically, a larger version could detect effects like ... | Quantum gyroscope | Physics,Materials_science,Engineering | 479 |
18,255,021 | https://en.wikipedia.org/wiki/Singularity%20%28DeSmedt%20novel%29 | Singularity is a novel by Bill DeSmedt published by Per Aspera Press in 2004. It is DeSmedt's debut novel and explores the theory that the Tunguska event was caused by a micro black hole.
Synopsis and publication
Released in 2004, Singularity is both DeSmedt's and the publishing house's debut novel. Singularity is the... | Singularity (DeSmedt novel) | Physics,Astronomy | 671 |
24,701,090 | https://en.wikipedia.org/wiki/P%C3%B3lya%E2%80%93Szeg%C5%91%20inequality | In mathematical analysis, the Pólya–Szegő inequality (or Szegő inequality) states that the Sobolev energy of a function in a Sobolev space does not increase under symmetric decreasing rearrangement. The inequality is named after the mathematicians George Pólya and Gábor Szegő.
Mathematical setting and statement
Give... | Pólya–Szegő inequality | Mathematics | 1,004 |
23,138,298 | https://en.wikipedia.org/wiki/Hodgkin%20cycle | In membrane biology, the Hodgkin cycle is a key component of membrane physiology that describes bioelectrical impulses, especially prevalent in neural and muscle tissues. It was identified by British physiologist and biophysicist Sir Alan Lloyd Hodgkin.
The Hodgkin cycle represents a positive feedback loop in which an... | Hodgkin cycle | Chemistry | 396 |
13,280,188 | https://en.wikipedia.org/wiki/20%2C000 | 20,000 (twenty thousand) is the natural number that comes after 19,999 and before 20,001.
20,000 is a round number and is also in the title of Jules Verne's 1870 novel Twenty Thousand Leagues Under the Seas.
Selected numbers in the range 20001–29999
20001 to 20999
20002 = number of surface-points of a tetrahedron w... | 20,000 | Mathematics | 1,343 |
16,878,758 | https://en.wikipedia.org/wiki/Copolyester | A copolyester is a copolymer synthesized by modification of polyesters, which are combinations of diacids and diols. For example, by introducing other diacids, such as isophthalic acid (IPA), or other diols, such as cyclohexane dimethanol (CHDM) to the polyester polyethylene terephthalate (PET), the material becomes a ... | Copolyester | Physics,Biology | 432 |
37,134,263 | https://en.wikipedia.org/wiki/Emergency%20disconnect%20package | An Emergency Disconnect Package (EDP) is a piece of equipment used in the drilling and work-over (servicing or modification) of deep sea oil & gas wells, by Mobile Offshore Drilling Rigs (MODU's) and Well Intervention Vessels (WIV's). The EDP is designed for use in an emergency, when the MODU or WIV needs to quickly di... | Emergency disconnect package | Chemistry | 459 |
47,690,260 | https://en.wikipedia.org/wiki/Giovanni%20Vignale | Giovanni Vignale is an Italian American physicist and Professor of Physics at the University of Missouri. Vignale is known for his work on density functional theory - a theoretical approach to the quantum many-body problem - and for several contributions to many-particle physics and spintronics. He is also the author... | Giovanni Vignale | Chemistry | 812 |
1,378,800 | https://en.wikipedia.org/wiki/Efflorescence | In chemistry, efflorescence (which roughly means "the flowering" in French) is the migration of a salt to the surface of a porous material, where it forms a coating. The essential process involves the dissolving of an internally held salt in water or occasionally, in another solvent. The water, with the salt now held i... | Efflorescence | Chemistry,Engineering | 1,785 |
23,117,441 | https://en.wikipedia.org/wiki/Ungula | In solid geometry, an ungula is a region of a solid of revolution, cut off by a plane oblique to its base. A common instance is the spherical wedge. The term ungula refers to the hoof of a horse, an anatomical feature that defines a class of mammals called ungulates.
The volume of an ungula of a cylinder was calculate... | Ungula | Physics,Mathematics | 1,273 |
36,392,695 | https://en.wikipedia.org/wiki/USA-166 | USA-166, also known as GPS IIR-8 and GPS SVN-56, is an American navigation satellite which forms part of the Global Positioning System. It was the eighth Block IIR GPS satellite to be launched, out of thirteen in the original configuration, and twenty one overall. It was built by Lockheed Martin, using the AS-4000 sate... | USA-166 | Technology | 295 |
50,344,789 | https://en.wikipedia.org/wiki/Stemettes | Stemettes is a social enterprise which encourages girls and young women aged 5–25 to pursue careers in Science, Technology, Engineering, and Maths (STEM). Stemettes runs panel events, hackathons, the Student to Stemette mentoring programme supported by Deutsche Bank, Outbox Incubator and an app, OtotheB, an online plat... | Stemettes | Technology | 364 |
25,185,313 | https://en.wikipedia.org/wiki/Asher%20yatzar | Asher yatzar ( "Who has formed man") is a blessing in Judaism. It is recited after one engages in an act of excretion or urination, but is also included in many Jewish prayer books as a part of daily prayer prior to birkot hashachar.
The purpose of this blessing is to thank God for good health. It expresses thanks for... | Asher yatzar | Biology | 757 |
16,677,038 | https://en.wikipedia.org/wiki/List%20of%20Slovenian%20astronomers | A list of notable astronomers from Slovenia:
A
Anton Ambschel (1749–1821)
B
Franc Breckerfeld (1681–1744)
Silvo Breskvar (1902–1969)
Č
Andrej Čadež (born 1942)
Lavo Čermelj (1889–1980)
G
Andreja Gomboc (born 1969)
Pavel Grošelj (1883–1940)
Gabriel Gruber (1740–1805)
H
Ferdinand Augustin Hallerstein (... | List of Slovenian astronomers | Astronomy | 157 |
21,572,219 | https://en.wikipedia.org/wiki/Bosque%20el%20Nixticuil | The Bosque el Nixticuil (Nixticuil Forest) is an old-growth forest located northwest of the Metropolitan Zone of Guadalajara in the Mexican town of Zapopan. An urban forest, it is encroached by the metropolitan area's constant growth. It is mostly composed of oak, holm oak and pine.
It is a remnant of a larger, now va... | Bosque el Nixticuil | Biology | 1,007 |
25,838,521 | https://en.wikipedia.org/wiki/National%20Aerospace%20University%20%E2%80%93%20Kharkiv%20Aviation%20Institute | National Aerospace University – "Kharkiv Aviation Institute" , NAU "KhAI" (, ХАІ; KhAI) is a university in Kharkiv, Ukraine which specializes in aviation and space engineering. The KhAI was founded in 1930.
History
The NAU "KhAI" was founded in 1930 on the basis of aviation division of the Kharkiv Polytechnic Instit... | National Aerospace University – Kharkiv Aviation Institute | Engineering | 1,405 |
24,508,935 | https://en.wikipedia.org/wiki/Gymnopilus%20ludovicianus | Gymnopilus ludovicianus is a species of mushroom in the family Hymenogastraceae.
See also
List of Gymnopilus species
External links
Gymnopilus ludovicianus at Index Fungorum
ludovicianus
Fungi of North America
Taxa named by William Alphonso Murrill
Fungus species | Gymnopilus ludovicianus | Biology | 72 |
38,351,608 | https://en.wikipedia.org/wiki/Diiminopyridine | Diiminopyridines (DIP, also known a pyridine diimines, PDIs) are a class of diimine ligands. They featuring a pyridine nucleus with imine sidearms appended to the 2,6–positions. The three nitrogen centres bind metals in a tridentate fashion, forming pincer complexes. Diiminopyridines are notable as non-innocent ligan... | Diiminopyridine | Chemistry | 1,260 |
2,642,299 | https://en.wikipedia.org/wiki/Freepost | Freepost is a postal service provided by various postal administrations, whereby a person sends mail without affixing postage, and the recipient pays the postage when collecting the mail. Freepost differs from self-addressed stamped envelopes, courtesy reply mail, and metered reply mail in that the recipient of the fr... | Freepost | Technology | 1,601 |
4,301,727 | https://en.wikipedia.org/wiki/Khan%20Research%20Laboratories | The Dr. A. Q. Khan Research Laboratories (shortened as KRL), is a federally funded research and development laboratory located in Kahuta at a short distance from Rawalpindi in Punjab, Pakistan. Established in 1976, the laboratory is best known for its central role in Pakistan's nuclear weapons program and its understan... | Khan Research Laboratories | Physics,Engineering | 2,431 |
37,881,289 | https://en.wikipedia.org/wiki/Potassium%20pentasulfide | Potassium pentasulfide is the inorganic compound with the formula . It is a red-orange solid that dissolves in water. The salt decomposes rapidly in air.
It is one of several polysulfide salts with the general formula , where M = Li, Na, K and n = 2, 3, 4, 5, 6. The polysulfide salts of potassium and sodium are similar... | Potassium pentasulfide | Chemistry | 183 |
9,277,886 | https://en.wikipedia.org/wiki/Deuterated%20THF | Deuterated tetrahydrofuran (d8-THF) is a colourless, organic liquid at standard temperature and pressure. This heterocyclic compound has the chemical formula C4D8O, and is an isotopologue of tetrahydrofuran. Deuterated THF is used as a solvent in NMR spectroscopy, though its expense can often be prohibitive.
Reference... | Deuterated THF | Chemistry | 93 |
68,402,408 | https://en.wikipedia.org/wiki/Smart%20home%20hub | A smart home hub, sometimes also referred to as a "smart hub", "gateway'", "bridge", "controller" or "coordinator", is a control center/centre for a smart home, and enables the components of a smart home to communicate and respond to each other via communication through a central point. The smart home hub can consist o... | Smart home hub | Technology | 871 |
4,852,393 | https://en.wikipedia.org/wiki/Pentavalent%20antimonial | Pentavalent antimonials (also abbreviated pentavalent Sb or SbV) are a group of compounds used for the treatment of leishmaniasis. They are also called pentavalent antimony compounds.
Types
The first pentavalent antimonial, urea stibamine, was synthesised by the Indian scientist Upendranath Brahmachari in 1922. Thou... | Pentavalent antimonial | Biology | 339 |
703,764 | https://en.wikipedia.org/wiki/Nuclear%20bag%20fiber | A nuclear bag fiber is a type of intrafusal muscle fiber that lies in the center of a muscle spindle. Each has many nuclei concentrated in bags and they cause excitation of the primary sensory fibers.
There are two kinds of bag fibers based upon contraction speed and motor innervation.
BAG2 fibers are the largest. The... | Nuclear bag fiber | Biology | 166 |
76,389,533 | https://en.wikipedia.org/wiki/Neodymium%28III%29%20iodate | Neodymium(III) iodate is an inorganic compound with the chemical formula Nd(IO3)3.
Preparation
Neodymium(III) iodate can be produced by the hydrothermal reaction of neodymium(III) nitrate or neodymium(III) oxide and iodic acid in water at 230 °C:
Properties
Neodymium(III) iodate can be thermally decomposed as fol... | Neodymium(III) iodate | Chemistry | 153 |
22,100,545 | https://en.wikipedia.org/wiki/Tajul%20muluk | The (taken from ) is a commonly used name for a system of geomancy, comprising metaphysical and geomantic principles considered when siting or designing buildings to improve and maintain well-being in Maritime Southeast Asia. It was traditionally practiced by shamans and architects from Indonesia and Malaysia. The ter... | Tajul muluk | Engineering | 3,211 |
106,421 | https://en.wikipedia.org/wiki/Library%20%28computing%29 | In computer science, a library is a collection of resources that is leveraged during software development to implement a computer program.
Historically, a library consisted of subroutines (generally called functions today). The concept now includes other forms of executable code including classes and non-executable da... | Library (computing) | Technology | 3,071 |
36,382,662 | https://en.wikipedia.org/wiki/USA-38 | USA-38, also known as GPS II-2 and GPS SVN-13, was an American navigation satellite which formed part of the Global Positioning System. It was the second of nine Block II GPS satellites to be launched, which were the first operational GPS satellites to be launched.
Background
It was part of the 21-satellite Global Po... | USA-38 | Technology | 380 |
72,709,760 | https://en.wikipedia.org/wiki/Caesium%20telluride | Caesium telluride or Caesium telluridocaesium is an inorganic salt with a chemical formula Cs2Te. Caesium telluride is used to make photo cathodes.
Caesium telluride is the photoemissive material used in many laser-driven radio frequency (RF) electron guns like in the TESLA Test Facility (TTF).
References
Caesium co... | Caesium telluride | Chemistry | 90 |
3,368,981 | https://en.wikipedia.org/wiki/Weak%20formulation | Weak formulations are important tools for the analysis of mathematical equations that permit the transfer of concepts of linear algebra to solve problems in other fields such as partial differential equations. In a weak formulation, equations or conditions are no longer required to hold absolutely (and this is not even... | Weak formulation | Mathematics | 738 |
32,233,575 | https://en.wikipedia.org/wiki/Asymmetric%20flow%20field%20flow%20fractionation | Asymmetrical flow field-flow fractionation (AF4) is most versatile and most widely used sub-technique within the family of field flow fractionation (FFF) methods. AF4 can be used in aqueous and organic solvents and is able to characterize nanoparticles, polymers and proteins. The theory for AF4 was conceived in 1986 an... | Asymmetric flow field flow fractionation | Chemistry | 969 |
66,379,796 | https://en.wikipedia.org/wiki/Ferraris%27%20motor | In 1885, Galileo Ferraris demonstrated an induction motor that also involved using two pairs of electromagnets to create a rotating magnetic field, though he did this independently of Baily. His motor more closely resembled modern ones in that the electromagnets surrounded a cylinder. More significantly, however, he pr... | Ferraris' motor | Physics,Technology,Engineering | 977 |
30,001,045 | https://en.wikipedia.org/wiki/Highest-weight%20category | In the mathematical field of representation theory, a highest-weight category is a k-linear category C (here k is a field) that
is locally artinian
has enough injectives
satisfies
for all subobjects B and each family of subobjects {Aα} of each object X
and such that there is a locally finite poset Λ (whose elements ar... | Highest-weight category | Mathematics | 373 |
78,700,451 | https://en.wikipedia.org/wiki/C/1850%20Q1%20%28Bond%29 | Bond's Comet, formally known as C/1850 Q1, is a parabolic comet that was observed through telescopes throughout late 1850. It was the only comet discovered independently by American astronomer, George Phillips Bond.
Discovery and observations
The comet was discovered by George Phillips Bond as a "faint, telescopic ob... | C/1850 Q1 (Bond) | Astronomy | 242 |
45,555,423 | https://en.wikipedia.org/wiki/Active%20thermography | Active thermography is an advanced nondestructive testing procedure, which uses a thermographic measurement of a tested material thermal response after its external excitation. This principle can be used also for non-contact infrared non-destructive testing (IRNDT) of materials.
The IRNDT method is based on an excitat... | Active thermography | Physics,Materials_science,Engineering | 1,870 |
347,838 | https://en.wikipedia.org/wiki/Nuclear%20medicine | Nuclear medicine (nuclear radiology, nucleology), is a medical specialty involving the application of radioactive substances in the diagnosis and treatment of disease. Nuclear imaging is, in a sense, radiology done inside out, because it records radiation emitted from within the body rather than radiation that is trans... | Nuclear medicine | Chemistry | 4,364 |
7,214,368 | https://en.wikipedia.org/wiki/Energy%20%26%20Environment | Energy & Environment is an academic journal "covering the direct and indirect environmental impacts of energy acquisition, transport, production and use". Under its editor-in-chief from 1998 to 2017, Sonja Boehmer-Christiansen, it was known for easygoing peer-review and publishing climate change denial papers. Yiu Fai ... | Energy & Environment | Environmental_science | 703 |
37,974,650 | https://en.wikipedia.org/wiki/Stenella%20subsanguinea | Stenella subsanguinea is a species of anamorphic fungi.
Description
Belonging to the Stenella genus, this species is a Cercospora-like fungus with a superficial secondary mycelium, solitary conidiophores, conidiogenous cells with thickened and darkened conidiogenous loci and catenate or single conidia with dark, sligh... | Stenella subsanguinea | Biology | 100 |
76,563,227 | https://en.wikipedia.org/wiki/Tsong%20Yueh%20Chen | Tsong Yueh Chen () is an Australian academic at the Swinburne University of Technology who is a professor and researcher in program testing and debugging. He is ranked internationally as the most prolific author in metamorphic testing.
Chen received the BSc and MPhil from The University of Hong Kong, the MSc and DIC f... | Tsong Yueh Chen | Technology | 342 |
63,360,436 | https://en.wikipedia.org/wiki/Virtual%20mailbox | A virtual mailbox is a service that receives physical mail on behalf of the addressee and usually scans the outside of the mail. Some providers also scan the inside contents of the mail as well. These scans may be photos, PDFs, or text-searchable PDFs. Reasons for using virtual mailboxes may include accepting mail from... | Virtual mailbox | Technology | 286 |
42,979,524 | https://en.wikipedia.org/wiki/Intertrial%20priming | In cognitive psychology, intertrial priming is an accumulation of the priming effect over multiple trials, where "priming" is the effect of the exposure to one stimulus on subsequently presented stimuli. Intertrial priming occurs when a target feature (the characteristic that distinguishes targets from non-targets) is... | Intertrial priming | Biology | 1,944 |
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