id int64 580 79M | url stringlengths 31 175 | text stringlengths 9 245k | source stringlengths 1 109 | categories stringclasses 160
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59,623,695 | https://en.wikipedia.org/wiki/Dermatotrophy | Dermatotrophy is a rare reproductive behaviour in which the young feed on the skin of its parents. It has been observed in several species of caecilian, including Boulengerula taitana, and is claimed to exist in the newly discovered unpublished species Dermophis donaldtrumpi.
References
Caecilians
Amphibian anatomy
... | Dermatotrophy | Biology | 76 |
856,444 | https://en.wikipedia.org/wiki/Df%20%28Unix%29 | (abbreviation for disk free) is a standard Unix command used to display the amount of available disk space for file systems on which the invoking user has appropriate read access. is typically implemented using the statfs or statvfs system calls.
History
for Unix-like systems is part of the X/Open Portability Guide ... | Df (Unix) | Technology | 1,300 |
361,331 | https://en.wikipedia.org/wiki/Rubik%27s%20Magic | Rubik's Magic, like the Rubik's Cube, is a mechanical puzzle invented by Ernő Rubik and first manufactured by Matchbox in the mid-1980s.
The puzzle consists of eight black square tiles (changed to red squares with goldish rings in 1997) arranged in a 2 × 4 rectangle; diagonal grooves on the tiles hold wires that conne... | Rubik's Magic | Mathematics | 1,856 |
417,815 | https://en.wikipedia.org/wiki/Relativistic%20rocket | Relativistic rocket means any spacecraft that travels close enough to light speed for relativistic effects to become significant. The meaning of "significant" is a matter of context, but often a threshold velocity of 30% to 50% of the speed of light (0.3c to 0.5c) is used. At 30% c, the difference between relativistic ... | Relativistic rocket | Astronomy | 1,597 |
6,142,327 | https://en.wikipedia.org/wiki/Solaris%20Trusted%20Extensions | Solaris Trusted Extensions is a set of security extensions incorporated in the Solaris 10 operating system by Sun Microsystems, featuring a mandatory access control model. It succeeds Trusted Solaris, a family of security-evaluated operating systems based on earlier versions of Solaris.
Solaris 10 5/09 is Common Crit... | Solaris Trusted Extensions | Technology | 534 |
33,612,621 | https://en.wikipedia.org/wiki/Vdio | Vdio Inc. was an internet television service created by Skype and Rdio co-founder Janus Friis in 2011. On April 2, 2013, Vdio was officially launched for Rdio premium subscribers. Vdio's platform for sharing content was a pay-per-view system compared to Rdio's unlimited streaming. Similar to the main players in the vid... | Vdio | Technology | 326 |
41,270,451 | https://en.wikipedia.org/wiki/Broadband%20acoustic%20resonance%20dissolution%20spectroscopy | Broadband acoustic resonance dissolution spectroscopy (BARDS) is a technique in analytical chemistry. Developed in the late 2000s, it involves the analysis of the changes in sound frequency generated when a solute dissolves in a solvent, by harnessing the hot chocolate effect.
The technique is partly based on the solu... | Broadband acoustic resonance dissolution spectroscopy | Physics,Chemistry | 527 |
13,213,116 | https://en.wikipedia.org/wiki/Captology | Captology is the study of computers as persuasive technologies. This area of inquiry explores the overlapping space between persuasion in general (influence, motivation, behavior change, etc.) and computing technology. This includes the design, research, and program analysis of interactive computing products (such as t... | Captology | Technology | 220 |
4,898,505 | https://en.wikipedia.org/wiki/Bureau%20of%20Ships | The United States Navy's Bureau of Ships (BuShips) was established by Congress on 20 June 1940, by a law which consolidated the functions of the Bureau of Construction and Repair (BuC&R) and the Bureau of Engineering (BuEng). The new bureau was to be headed by a chief and deputy-chief, one selected from the Engineerin... | Bureau of Ships | Engineering | 1,247 |
1,021,628 | https://en.wikipedia.org/wiki/Chernobyl%20exclusion%20zone | The Chernobyl Nuclear Power Plant Zone of Alienation, also called the 30-Kilometre Zone or simply The Zone, was established shortly after the 1986 Chernobyl disaster in the Ukrainian SSR of the Soviet Union.
Initially, Soviet authorities declared an exclusion zone spanning a radius around the Chernobyl Nuclear Power ... | Chernobyl exclusion zone | Chemistry,Technology | 7,609 |
35,763,931 | https://en.wikipedia.org/wiki/Multipartition | In number theory and combinatorics, a multipartition of a positive integer n is a way of writing n as a sum, each element of which is in turn an integer partition. The concept is also found in the theory of Lie algebras.
r-component multipartitions
An r-component multipartition of an integer n is an r-tuple of partit... | Multipartition | Mathematics | 163 |
27,990,947 | https://en.wikipedia.org/wiki/Digital%20Humanities%20conference | The Digital Humanities conference is an academic conference for the field of digital humanities. It is hosted by Alliance of Digital Humanities Organizations and has been held annually since 1989.
History
The first joint conference was held in 1989, at the University of Toronto—but that was the 16th annual meeting of ... | Digital Humanities conference | Technology | 285 |
40,761,526 | https://en.wikipedia.org/wiki/MR-2096 | MR-2096 is an opioid analgesic drug related to oxymorphone. It has an unusual chiral tetrahydrofuran-2-ylmethyl substitution on the nitrogen which determines the character of effects, with the (R) enantiomer MR-2096 being an opioid agonist, while the (S) enantiomer MR-2097 has similarly potent opioid antagonist effects... | MR-2096 | Chemistry | 175 |
25,992,485 | https://en.wikipedia.org/wiki/Fujitsu%20iPAD | The Fujitsu iPAD is a lightweight handheld device that was introduced by Fujitsu, in 2002. It runs Microsoft's CE.NET operating system. It supports 802.11b wireless LAN to connect wirelessly with other company infrastructure. The device can support inventory management as well as credit card payments. In January 2010, ... | Fujitsu iPAD | Technology | 150 |
62,723,168 | https://en.wikipedia.org/wiki/Daniel%20McGillivray%20Brown | Daniel McGillivray Brown FRS (3 February 1923 – 24 April 2012) was a Scottish nucleic acid chemist.
Early life and career
Daniel McGillivray Brown was born in Giffnock on 3 February 1923, son of David Cunninghame Brown, a restaurateur, and Catherine Stewart (née McGillivray), a teacher. After Giffnock Primary School... | Daniel McGillivray Brown | Chemistry | 550 |
30,819,190 | https://en.wikipedia.org/wiki/Home%20ultrasound | Home ultrasound is the provision of therapeutic ultrasound via the use of a portable or home ultrasound machine. This method of medical ultrasound therapy can be used for various types of pain relief and physical therapy.
In physics, the term "ultrasound" applies to all acoustic energy with a frequency above the audib... | Home ultrasound | Physics,Biology | 715 |
8,561,047 | https://en.wikipedia.org/wiki/Wingsail | A wingsail, twin-skin sail or double skin sail is a variable-camber aerodynamic structure that is fitted to a marine vessel in place of conventional sails. Wingsails are analogous to airplane wings, except that they are designed to provide lift on either side to accommodate being on either tack. Whereas wings adjust ca... | Wingsail | Engineering | 966 |
32,226,715 | https://en.wikipedia.org/wiki/Early%20growth%20response%20proteins | Early growth response proteins are a family of zinc finger transcription factors.
Members of the family include:
EGR1, EGR2, EGR3 and EGR4
References
External links
Transcription factors
Zinc proteins
Protein families | Early growth response proteins | Chemistry,Biology | 45 |
63,412,780 | https://en.wikipedia.org/wiki/Signed%20set | In mathematics, a signed set is a set of elements together with an assignment of a sign (positive or negative) to each element of the set.
Representation
Signed sets may be represented mathematically as an ordered pair of disjoint sets, one set for their positive elements and another for their negative elements. Alter... | Signed set | Mathematics | 517 |
1,000,474 | https://en.wikipedia.org/wiki/PLATO%20%28computer%20system%29 | PLATO (Programmed Logic for Automatic Teaching Operations), also known as Project Plato and Project PLATO, was the first generalized computer-assisted instruction system. Starting in 1960, it ran on the University of Illinois's ILLIAC I computer. By the late 1970s, it supported several thousand graphics terminals distr... | PLATO (computer system) | Engineering | 7,582 |
21,576,279 | https://en.wikipedia.org/wiki/3D%20television | 3D television (3DTV) is television that conveys depth perception to the viewer by employing techniques such as stereoscopic display, multi-view display, 2D-plus-depth, or any other form of 3D display. Most modern 3D television sets use an active shutter 3D system or a polarized 3D system, and some are autostereoscopic ... | 3D television | Technology | 7,538 |
63,455,728 | https://en.wikipedia.org/wiki/Modular%20forms%20modulo%20p | In mathematics, modular forms are particular complex analytic functions on the upper half-plane of interest in complex analysis and number theory. When reduced modulo a prime p, there is an analogous theory to the classical theory of complex modular forms and the p-adic theory of modular forms.
Reduction of modular fo... | Modular forms modulo p | Mathematics | 860 |
2,593,693 | https://en.wikipedia.org/wiki/History%20of%20Apple%20Inc. | Apple Inc., originally Apple Computer, Inc., is a multinational corporation that creates and markets consumer electronics and attendant computer software, and is a digital distributor of media content. Apple's core product lines are the iPhone smartphone, iPad tablet computer, and the Mac personal computer. The company... | History of Apple Inc. | Technology | 13,240 |
24,983,637 | https://en.wikipedia.org/wiki/Functional%20Ecology%20%28journal%29 | Functional Ecology is a monthly peer-reviewed scientific journal covering physiological, behavioural, and evolutionary ecology, as well as ecosystems and community ecology, emphasizing an integrative approach.
The journal was established in 1987 and is published by Wiley-Blackwell on behalf of the British Ecological ... | Functional Ecology (journal) | Environmental_science | 305 |
201,749 | https://en.wikipedia.org/wiki/Bus%20mastering | In computing, bus mastering is a feature supported by many bus architectures that enables a device connected to the bus to initiate direct memory access (DMA) transactions. It is also referred to as first-party DMA, in contrast with third-party DMA where a system DMA controller actually does the transfer.
Some types o... | Bus mastering | Technology | 300 |
1,180,190 | https://en.wikipedia.org/wiki/Itoh%E2%80%93Tsujii%20inversion%20algorithm | While the algorithm is often called the Itoh-Tsujii algorithm, it was first presented by Feng.
Feng's paper was received on March 13, 1987 and published in October 1989. Itoh and Tsujii's paper was received on July 8, 1987 and published in 1988.
Feng and Itoh-Tsujii algorithm is first used to invert elements in finit... | Itoh–Tsujii inversion algorithm | Mathematics | 455 |
19,302,585 | https://en.wikipedia.org/wiki/California%20Artificial%20Stone%20Paving%20Co.%20v.%20Molitor | California Artificial Stone Paving Co. v. Molitor, 113 U.S. 609 (1885), involved a bill that was filed by the appellant against the appellee complaining that the latter was infringing on a letters patent granted to one John J. Schillinger, and which had been assigned for the State of California to the complainant.
The... | California Artificial Stone Paving Co. v. Molitor | Engineering | 270 |
21,772,174 | https://en.wikipedia.org/wiki/Centrotherm%20Photovoltaics | centrotherm international AG is a supplier of process technology and equipment for the photovoltaics, semiconductor and microelectronics industries.
Its company headquarters are in Blaubeuren, Germany (Baden-Württemberg).
Industry sector
centrotherm international AG develops, manufactures and markets thermal key equ... | Centrotherm Photovoltaics | Engineering | 288 |
16,085,921 | https://en.wikipedia.org/wiki/National%20Environmental%20Engineering%20Research%20Institute | The National Environmental Engineering Research Institute (NEERI) in Nagpur was originally established in 1958 as the Central Public Health Engineering Research Institute (CPHERI). It has been described as the "premier and oldest institute in India." It is an institution listed on the Integrated Government Online Direc... | National Environmental Engineering Research Institute | Chemistry,Engineering | 1,007 |
37,077,022 | https://en.wikipedia.org/wiki/Eta%20Gruis | Eta Gruis, Latinized from η Gruis, is a solitary star in the southern constellation of Grus. It is visible to the naked eye as a faint, orange-hued star with an apparent visual magnitude of 4.85. Based upon an annual parallax shift of as seen from the Earth, the system is located about 460 light years from the Sun. Th... | Eta Gruis | Astronomy | 267 |
57,954,250 | https://en.wikipedia.org/wiki/Atomic%20trap%20trace%20analysis | Atom Trap Trace Analysis (ATTA) is an extremely sensitive trace analysis method developed by Argonne National Lab (ANL). ATTA is used on long-lived, stable radioisotopes such as , , and . By using a laser that is locked to an atomic transition, a CCD or PMT will detect the laser induced fluorescence to allow highly sel... | Atomic trap trace analysis | Chemistry | 320 |
40,849,226 | https://en.wikipedia.org/wiki/The%20Singularity%20%28film%29 | The Singularity is a 2012 documentary film about the technological singularity, produced and directed by Doug Wolens. The film has been called "a large-scale achievement in its documentation of futurist and counter-futurist ideas”.
Synopsis
Doug Wolens organized his interviews with the commentators (see list below) ... | The Singularity (film) | Technology,Engineering,Biology | 905 |
20,373,832 | https://en.wikipedia.org/wiki/Abell%202142 | Abell 2142, or A2142, is a huge, X-ray luminous galaxy cluster in the constellation Corona Borealis. It is the result of a still ongoing merger between two galaxy clusters. The combined cluster is six million light years across, contains hundreds of galaxies and enough gas to make a thousand more. It is "one of the mos... | Abell 2142 | Astronomy | 749 |
293,077 | https://en.wikipedia.org/wiki/Video%20game%20remake | A video game remake is a video game closely adapted from an earlier title, usually for the purpose of modernizing a game with updated graphics for newer hardware and gameplay for contemporary audiences. Typically, a remake of such game software shares essentially the same title, fundamental gameplay concepts, and core ... | Video game remake | Technology | 3,222 |
3,528,909 | https://en.wikipedia.org/wiki/John%20G.%20McNutt | John G. McNutt (born 1951) is Professor Emeritus in the Biden School of Public Policy and Administration at the University of Delaware and is a researcher and pioneer in the study of the use of information and communication technologies in the nonprofit sector in the United States. Much of his work focuses on electroni... | John G. McNutt | Technology | 306 |
5,122,292 | https://en.wikipedia.org/wiki/Trichloroisocyanuric%20acid | Trichloroisocyanuric acid is an organic compound with the formula (CONCl)3. It is used as an industrial disinfectant, bleaching agent and a reagent in organic synthesis. This white crystalline powder, which has a strong "chlorine odour," is sometimes sold in tablet or granule form for domestic and industrial use.
Syn... | Trichloroisocyanuric acid | Biology | 487 |
25,897,909 | https://en.wikipedia.org/wiki/Patch%20dynamics%20%28physics%29 | Patch dynamics is a term used in physics to bridge, using algorithms, the models describing macroscale behavior and to predict large-scale patterns in fluid flow. It uses locally averaged properties of short space-time scales to advance and predict long space-time scale dynamics.
In patch dynamics and finite differenc... | Patch dynamics (physics) | Chemistry,Engineering | 143 |
68,403,092 | https://en.wikipedia.org/wiki/Shoe%20dryer | A shoe dryer or boot dryer is a machine used for drying shoes, and usually functions by blowing air on the inside of the shoes. The airflow causes the shoes to dry faster. The air can be heated for even faster drying, and these are the most common types. Shoes dryers can be especially useful for people who often have w... | Shoe dryer | Physics,Technology | 594 |
1,983,545 | https://en.wikipedia.org/wiki/148%20%28number%29 | 148 (one hundred [and] forty-eight) is the natural number following 147 and before 149.
In mathematics
148 is the second number to be both a heptagonal number and a centered heptagonal number (the first is 1). It is the twelfth member of the Mian–Chowla sequence, the lexicographically smallest sequence of distinct pos... | 148 (number) | Mathematics | 165 |
576,855 | https://en.wikipedia.org/wiki/Binary%20decision%20diagram | In computer science, a binary decision diagram (BDD) or branching program is a data structure that is used to represent a Boolean function. On a more abstract level, BDDs can be considered as a compressed representation of sets or relations. Unlike other compressed representations, operations are performed directly on ... | Binary decision diagram | Mathematics | 2,662 |
668,130 | https://en.wikipedia.org/wiki/Thermochemical%20equation | In thermochemistry, a thermochemical equation is a balanced chemical equation that represents the energy changes from a system to its surroundings. One such equation involves the enthalpy change, which is denoted with In variable form, a thermochemical equation would appear similar to the following:
, , and are the ... | Thermochemical equation | Chemistry | 1,305 |
38,568,822 | https://en.wikipedia.org/wiki/Long-term%20impact%20of%20alcohol%20on%20the%20brain | The long-term impact of alcohol on the brain has become a growing area of research focus. While researchers have found that moderate alcohol consumption in older adults is associated with better cognition and well-being than abstinence, excessive alcohol consumption is associated with widespread and significant brain l... | Long-term impact of alcohol on the brain | Biology | 1,600 |
212,453 | https://en.wikipedia.org/wiki/Mis%C3%A8re | Misère (French for "destitution"), misere, bettel, betl, or (German for "beggar"; equivalent terms in other languages include , and ) is a bid in various card games, and the player who bids misère undertakes to win no tricks or as few as possible, usually at no trump, in the round to be played. This does not allow s... | Misère | Mathematics | 599 |
54,150,419 | https://en.wikipedia.org/wiki/Multivariate%20Laplace%20distribution | In the mathematical theory of probability, multivariate Laplace distributions are extensions of the Laplace distribution and the asymmetric Laplace distribution to multiple variables. The marginal distributions of symmetric multivariate Laplace distribution variables are Laplace distributions. The marginal distributi... | Multivariate Laplace distribution | Mathematics | 600 |
73,372,444 | https://en.wikipedia.org/wiki/Russula%20badia | Russula badia, also known as the burning brittlegill, is a species of mushroom in the genus Russula.
References
External links
badia
Fungi of Europe
Fungi described in 1881
Fungus species | Russula badia | Biology | 40 |
3,699,383 | https://en.wikipedia.org/wiki/X%3AA%20ratio | The X:A ratio is the ratio between the number of X chromosomes and the number of sets of autosomes in an organism. This ratio is used primarily for determining the sex of some species, such as drosophila flies and the C. elegans nematode. The first use of this ratio for sex determination is ascribed to Victor M. Nigon.... | X:A ratio | Biology | 224 |
29,192 | https://en.wikipedia.org/wiki/Space%20elevator | A space elevator, also referred to as a space bridge, star ladder, and orbital lift, is a proposed type of planet-to-space transportation system, often depicted in science fiction. The main component would be a cable (also called a tether) anchored to the surface and extending into space. An Earth-based space elevator ... | Space elevator | Astronomy,Technology | 8,624 |
1,786,922 | https://en.wikipedia.org/wiki/Stomachic | Stomachic is a historic term for a medicine that serves to tone the stomach, improving its function and increase appetite. While many herbal remedies claim stomachic effects, modern pharmacology does not have an equivalent term for this type of action.
Herbs with putative stomachic effects include:
Agrimony
Aloe
A... | Stomachic | Chemistry | 332 |
5,200,853 | https://en.wikipedia.org/wiki/InfoDev | infoDev is a World Bank Group program that supports high-growth entrepreneurs in developing economies. The program is part of the Innovation and Entrepreneurship Unit of the World Bank Group's Trade and Competitiveness Global Practice.
infoDev connects entrepreneurs with knowledge, funding and mentors through a global... | InfoDev | Technology | 453 |
6,169,271 | https://en.wikipedia.org/wiki/Resource%20acquisition%20ability | Resource acquisition ability (RAA) is a term in social psychology and the sexual opposite of the reproductive value (RV), introducing an unintentional mechanism used by women when selecting a male partner. The RAA is focused on some factors:
Genetic information
Wealth
Salary
Social status
Child care
Personal hist... | Resource acquisition ability | Biology | 155 |
36,367,682 | https://en.wikipedia.org/wiki/REMUS%20%28vehicle%29 | The REMUS (Remote Environmental Monitoring UnitS) series are autonomous underwater vehicles (AUVs) made by the Woods Hole Oceanographic Institution and designed by their Oceanographic Systems Lab (OSL). More recently REMUS vehicles have been manufactured by the spinoff company Hydroid Inc, which was a wholly owned subs... | REMUS (vehicle) | Physics,Environmental_science | 1,597 |
2,433,483 | https://en.wikipedia.org/wiki/Valrubicin | Valrubicin (N-trifluoroacetyladriamycin-14-valerate, trade name Valstar) is a chemotherapy drug used to treat bladder cancer. Valrubicin is a semisynthetic analog of the anthracycline doxorubicin, and is administered by infusion directly into the bladder.
It was originally launched as Valstar in the U.S. in 1999 for i... | Valrubicin | Chemistry | 207 |
68,038,337 | https://en.wikipedia.org/wiki/Sofpironium%20bromide | Sofpironium bromide, sold under the brand name Ecclock among others, is a medication used to treat hyperhidrosis (excessive sweating). Sofpironium bromide is an anticholinergic agent that is applied to the skin.
It was approved for medical use in Japan in 2020, and in the United States in June 2024.
Medical uses
Sof... | Sofpironium bromide | Chemistry | 235 |
43,574,878 | https://en.wikipedia.org/wiki/Cyanopeptolin | Cyanopeptolins (CPs) are a class of oligopeptides produced by Microcystis and Planktothrix algae strains, and can be neurotoxic. The production of cyanopeptolins occurs through nonribosomal peptides synthases (NRPS).
Chemistry
CPs are, in general, a six-residue peptide formed into a ring by a beta-lactone bridge, mak... | Cyanopeptolin | Chemistry | 413 |
69,274,109 | https://en.wikipedia.org/wiki/Turkesterone | Turkesterone is a phytoecdysteroid found in numerous plant species, including Ajuga turkestanica, various Vitex species, Triticum aestivum, and Rhaponticum acaule.
See also
Ecdysterone
References
Tertiary alcohols | Turkesterone | Chemistry | 62 |
14,439,837 | https://en.wikipedia.org/wiki/AUSTAL2000 | Austal2000 is an atmospheric dispersion model for simulating the dispersion of air pollutants in the ambient atmosphere. It was developed by Ingenieurbüro Janicke in Dunum, Germany under contract to the Federal Ministry for Environment, Nature Conservation and Nuclear Safety.
Although not named in the TA Luft, it is... | AUSTAL2000 | Chemistry,Engineering,Environmental_science | 285 |
1,764,793 | https://en.wikipedia.org/wiki/Hemiaminal | In organic chemistry, a hemiaminal (also carbinolamine) is a functional group or type of chemical compound that has a hydroxyl group and an amine attached to the same carbon atom: . R can be hydrogen or an alkyl group. Hemiaminals are intermediates in imine formation from an amine and a carbonyl by alkylimino-de-oxo-bi... | Hemiaminal | Chemistry | 733 |
3,320,853 | https://en.wikipedia.org/wiki/Chemical%20process | In a scientific sense, a chemical process is a method or means of somehow changing one or more chemicals or chemical compounds. Such a chemical process can occur by itself or be caused by an outside force, and involves a chemical reaction of some sort. In an "engineering" sense, a chemical process is a method intended ... | Chemical process | Chemistry | 699 |
12,642,304 | https://en.wikipedia.org/wiki/Human%20factors%20integration | Human Factors Integration (HFI) is the process adopted by a number of key industries (notably defence and hazardous industries like oil & gas) in Europe to integrate human factors and ergonomics into the systems engineering process. Although each industry has a slightly different domain, the underlying approach is the ... | Human factors integration | Engineering | 768 |
48,992,685 | https://en.wikipedia.org/wiki/Transition%20metal%20dithiophosphate%20complex | Transition metal dithiophosphate complexes are coordination compounds containing dithiophosphate ligands, i.e. ligands of the formula (RO)2PS. The homoleptic complexes have formulas M[S2P(OR)2]2 and M[S2P(OR)2]3. These neutral complexes tend to be soluble in organic solvents, especially when R is branched.
Perhaps t... | Transition metal dithiophosphate complex | Chemistry | 147 |
11,552,809 | https://en.wikipedia.org/wiki/Monographella%20albescens | Monographella albescens is a fungal plant pathogen also known as leaf scald which infects rice.
Transmission
Conidia are transferred by water splash.
Host resistance
Lines of rice that are resistant against M. albescens are available. Most resistance breeding has been in field trials in countries where the disease ... | Monographella albescens | Biology | 181 |
1,882,334 | https://en.wikipedia.org/wiki/William%20Fyfe%20%28geochemist%29 | William Sefton Fyfe, (4 June 1927 – 11 November 2013) was a New Zealand geologist and Professor Emeritus in the department of Earth Sciences at the University of Western Ontario. He is widely considered among the world's most eminent geochemists.
Life
Born in Ashburton, New Zealand, he received his BSc degree in 194... | William Fyfe (geochemist) | Chemistry | 574 |
37,461,490 | https://en.wikipedia.org/wiki/Iron%28II%29%20selenide | Iron(II) selenide refers to a number of inorganic compounds of ferrous iron and selenide (Se2−). The phase diagram of the system Fe–Se reveals the existence of several non-stoichiometric phases between ~49 at. % Se and ~53 at. % Fe, and temperatures up to ~450 °C. The low temperature stable phases are the tetragonal Pb... | Iron(II) selenide | Chemistry,Materials_science | 423 |
63,513,992 | https://en.wikipedia.org/wiki/NGC%20767 | NGC 767 is a barred spiral galaxy located in the constellation Cetus about 241 million light years from the Milky Way. It was discovered by the American astronomer Francis Leavenworth in 1886.
One supernova has been observed in NGC 767: SN2019lre (typeII, mag. 19.2).
See also
List of NGC objects (1–1000)
Reference... | NGC 767 | Astronomy | 105 |
12,585,208 | https://en.wikipedia.org/wiki/Water%20cluster | In chemistry, a water cluster is a discrete hydrogen bonded assembly or cluster of molecules of water. Many such clusters have been predicted by theoretical models (in silico), and some have been detected experimentally in various contexts such as ice, bulk liquid water, in the gas phase, in dilute mixtures with non-po... | Water cluster | Chemistry | 1,060 |
51,072,866 | https://en.wikipedia.org/wiki/Department%20for%20Business%2C%20Energy%20and%20Industrial%20Strategy | The Department for Business, Energy, and Industrial Strategy (BEIS) was a ministerial department of the United Kingdom Government, from July 2016 to February 2023.
The department was formed during a machinery of government change on 14 July 2016, following Theresa May's appointment as Prime Minister. It was created b... | Department for Business, Energy and Industrial Strategy | Engineering | 845 |
24,633,146 | https://en.wikipedia.org/wiki/Pedro%20E.%20Zadunaisky | Pedro Elías Zadunaisky (December 10, 1917 – October 7, 2009) was an Argentine astronomer and mathematician who plotted the orbit of Saturn's most-distant moon, Phoebe, as well as several comets including Halley's Comet, and various satellites including Explorer I.
Zadunaisky was born in Rosario, Santa Fe. He was once ... | Pedro E. Zadunaisky | Astronomy | 161 |
76,023,439 | https://en.wikipedia.org/wiki/Shen%20Qiang%20%28engineer%29 | Professor Qiang Shen is an academic and engineer. He is an expert in the research and
development of data modelling and analysis and currently serves as Pro Vice-Chancellor at
Aberystwyth University. As of 2023, he has published 450 peer-reviewed papers in electronic
engineering and computing journals. His expertise is... | Shen Qiang (engineer) | Engineering | 406 |
12,545,981 | https://en.wikipedia.org/wiki/Topological%20entropy%20in%20physics | The topological entanglement entropy or topological entropy, usually denoted by , is a number characterizing many-body states that possess topological order.
A non-zero topological entanglement entropy reflects the presence of long range quantum entanglements in a many-body quantum state. So the topological entanglem... | Topological entropy in physics | Physics,Chemistry,Materials_science,Mathematics,Engineering | 311 |
33,397,451 | https://en.wikipedia.org/wiki/SolarPark%20Korea | SolarPark Korea Co., Ltd. is a South Korean crystalline silicon module manufacturer. Founded in 2008 as a German-Korean joint venture, the company combines German and Korean machinery and engineering in its automated module fabrication lines. In June 2011, SolarPark Korea became a 100% subsidiary of the SolarPark Co., ... | SolarPark Korea | Engineering | 629 |
2,611,788 | https://en.wikipedia.org/wiki/John%20James%20Abert | John James Abert (17 September 1788 – 27 January 1863) was an American soldier. He headed the Corps of Topographical Engineers for 32 years, during which time he organized the mapping of the American West.
Abert was born in Shepherdstown, Virginia (now West Virginia; also disputed to be Frederick, Maryland) to John Ab... | John James Abert | Engineering | 1,026 |
14,120,062 | https://en.wikipedia.org/wiki/ELK1 | ETS Like-1 protein Elk-1 is a protein that in humans is encoded by the ELK1. Elk-1 functions as a transcription activator. It is classified as a ternary complex factor (TCF), a subclass of the ETS family, which is characterized by a common protein domain that regulates DNA binding to target sequences. Elk1 plays import... | ELK1 | Chemistry,Biology | 2,210 |
41,972,932 | https://en.wikipedia.org/wiki/Soundwalk | A soundwalk is a walk with a focus on listening to the environment. The term was first used by members of the World Soundscape Project under the leadership of composer R. Murray Schafer in Vancouver in the 1970s. Hildegard Westerkamp, from the same group of artists and founder of the World Forum of Acoustic Ecology, de... | Soundwalk | Physics | 458 |
77,542,818 | https://en.wikipedia.org/wiki/NGC%206078 | NGC 6078 is an elliptical galaxy in the constellation of Hercules. Its velocity with respect to the cosmic microwave background is 9459 ± 44 km/s, which corresponds to a Hubble distance of 139.52 ± 9.81 Mpc (∼455 million light-years). It was discovered by French astronomer Édouard Stephan on 21 June 1876.
Very close t... | NGC 6078 | Astronomy | 189 |
14,573,421 | https://en.wikipedia.org/wiki/Traditional%20knowledge%20GIS | Traditional knowledge Geographic Information Systems (GIS) is a toolset of systems that uses data, techniques, and technologies designed to document and utilize local knowledge in communities around the world. Traditional knowledge is information that encompasses the experiences of a particular culture or society. Trad... | Traditional knowledge GIS | Technology | 902 |
30,985,752 | https://en.wikipedia.org/wiki/Permocalculus | Permocalculus is a genus of red algae known from Permian to Cretaceous strata. Closely aligned to Gymnocodium, it is placed in the Gymnocodiaceae.
References
Fossil algae
Red algae genera
Permian first appearances
Cretaceous extinctions
Enigmatic red algae taxa | Permocalculus | Biology | 57 |
29,866,108 | https://en.wikipedia.org/wiki/B-theorem | In mathematics, the B-theorem is a result in finite group theory formerly known as the B-conjecture.
The theorem states that if is the centralizer of an involution of a finite group, then every component of is the image of a component of .
References
Theorems about finite groups
Conjectures that have been proved | B-theorem | Mathematics | 68 |
1,387,081 | https://en.wikipedia.org/wiki/Rubik%27s%20Clock | The Rubik's Clock is a mechanical puzzle invented and patented by Christopher C. Wiggs and Christopher J. Taylor. The Hungarian sculptor and professor of architecture Ernő Rubik bought the patent from them to market the product under his name. It was first marketed in 1988.
The Rubik's Clock is a two-sided puzzle, ea... | Rubik's Clock | Mathematics | 899 |
7,930,037 | https://en.wikipedia.org/wiki/Subnormal%20operator | In mathematics, especially operator theory, subnormal operators are bounded operators on a Hilbert space defined by weakening the requirements for normal operators. Some examples of subnormal operators are isometries and Toeplitz operators with analytic symbols.
Definition
Let H be a Hilbert space. A bounded operator... | Subnormal operator | Mathematics | 1,061 |
37,920,642 | https://en.wikipedia.org/wiki/Lie-%2A%20algebra | In mathematics, a Lie-* algebra is a D-module with a Lie* bracket. They were introduced by Alexander Beilinson and Vladimir Drinfeld (), and are similar to the conformal algebras discussed by and to vertex Lie algebras.
References
Lie algebras | Lie-* algebra | Mathematics | 58 |
734,256 | https://en.wikipedia.org/wiki/Molecular%20modelling | Molecular modelling encompasses all methods, theoretical and computational, used to model or mimic the behaviour of molecules. The methods are used in the fields of computational chemistry, drug design, computational biology and materials science to study molecular systems ranging from small chemical systems to large b... | Molecular modelling | Chemistry,Engineering,Biology | 1,132 |
9,934,611 | https://en.wikipedia.org/wiki/Dihydrofolic%20acid | Dihydrofolic acid (conjugate base dihydrofolate) (DHF) is a folic acid (vitamin B9) derivative which is converted to tetrahydrofolic acid by dihydrofolate reductase. Since tetrahydrofolate is needed to make both purines and pyrimidines, which are building blocks of DNA and RNA, dihydrofolate reductase is targeted by va... | Dihydrofolic acid | Chemistry | 115 |
39,310,035 | https://en.wikipedia.org/wiki/Dependence%20receptor | In cellular biology, dependence receptors are proteins that mediate programmed cell death by monitoring the absence of certain trophic factors (or, equivalently, the presence of anti-trophic factors) that otherwise serve as ligands (interactors) for the dependence receptors.
A trophic ligand is a molecule whose protein... | Dependence receptor | Chemistry,Biology | 1,300 |
39,519,649 | https://en.wikipedia.org/wiki/Applied%20Logic%20Corporation | Applied Logic Corporation (AL/COM) was a time-sharing company in the 1960s and 70s.
Headquartered in Princeton, New Jersey, AL/COM started in 1962 working on "mathematical techniques and their applications to problem-solving."
Seeing the need for in-house time sharing the company bought a Digital Equipment Corporatio... | Applied Logic Corporation | Technology | 596 |
31,332 | https://en.wikipedia.org/wiki/International%20Obfuscated%20C%20Code%20Contest | The International Obfuscated C Code Contest (abbreviated IOCCC) is a computer programming contest for the most creatively obfuscated C code. Held semi-annually, it is described as "celebrating [C's] syntactical opaqueness". The winning code for the 27th contest, held in 2020, was released in July 2020. Previous contest... | International Obfuscated C Code Contest | Technology,Engineering | 6,591 |
4,713,458 | https://en.wikipedia.org/wiki/Canadian%20Institute%20for%20Theoretical%20Astrophysics | The Canadian Institute for Theoretical Astrophysics (CITA) is a national research institute funded by the Natural Sciences and Engineering Research Council, located at the University of Toronto in Toronto, Ontario, Canada. CITA's mission is "to foster interaction within the Canadian theoretical Astrophysics community a... | Canadian Institute for Theoretical Astrophysics | Astronomy | 890 |
20,989,214 | https://en.wikipedia.org/wiki/Susanne%20Albers | Susanne Albers is a German theoretical computer scientist and professor of computer science at the Department of Informatics of the Technical University of Munich. She is a recipient of the Otto Hahn Medal and the Leibniz Prize.
Education and career
Albers studied mathematics, computer science, and business administra... | Susanne Albers | Mathematics | 379 |
46,822,454 | https://en.wikipedia.org/wiki/Hobby%20ZR-84 | Hobby ZR-84 was an educational and home computer developed by MICROSYS Beočin in SFRY (now Serbia) in 1984.
Specifications
Source:
CPU: Z80A running at 4 MHz
ROM: 12 KB BASIC
Primary memory: 16 KB (expandable up to 48 KB)
Secondary storage: cassette tape, floppy drive
Display: text mode 16 lines with 64 charact... | Hobby ZR-84 | Technology | 159 |
1,782,310 | https://en.wikipedia.org/wiki/Abu%20Said%20Gorgani | Abu Sa'id Dharir Gurgani (), also Gurgani, was a 9th-century Persian mathematician and astronomer from Gurgan, Iran. He wrote a treatise on geometrical problems and another on the drawing of the meridian. George Sarton considers him a pupil of Ibn al-A'rabi, but Carl Brockelmann rejects this opinion.
Works
Two of his... | Abu Said Gorgani | Astronomy | 186 |
46,810,026 | https://en.wikipedia.org/wiki/Penicillium%20mononematosum | Penicillium mononematosum is an anamorph species of the genus Penicillium which produces viriditoxin.
Further reading
References
mononematosum
Fungi described in 1989
Fungus species | Penicillium mononematosum | Biology | 44 |
7,271,098 | https://en.wikipedia.org/wiki/Edge%20recombination%20operator | The edge recombination operator (ERO) is an operator that creates a path that is similar to a set of existing paths (parents) by looking at the edges rather than the vertices. The main application of this is for crossover in genetic algorithms when a genotype with non-repeating gene sequences is needed such as for the ... | Edge recombination operator | Biology | 879 |
55,958,870 | https://en.wikipedia.org/wiki/Caldanaerobius%20fijiensis | Caldanaerobius fijiensis is a thermophilic, obligately anaerobic and spore-forming bacterium from the genus of Caldanaerobius which has been isolated from a hot spring in Fiji.
References
Thermoanaerobacterales
Bacteria described in 2008
Thermophiles
Anaerobes | Caldanaerobius fijiensis | Biology | 69 |
8,854,508 | https://en.wikipedia.org/wiki/Ostriker%E2%80%93Peebles%20criterion | In astronomy, the Ostriker–Peebles criterion, named after its discoverers Jeremiah Ostriker and Jim Peebles, describes the formation of barred galaxies.
The rotating disc of a spiral galaxy, consisting of stars and solar systems, may become unstable in a way that the stars in the outer parts of the "arms" are released... | Ostriker–Peebles criterion | Astronomy | 135 |
292,239 | https://en.wikipedia.org/wiki/Transitive%20closure | In mathematics, the transitive closure of a homogeneous binary relation on a set is the smallest relation on that contains and is transitive. For finite sets, "smallest" can be taken in its usual sense, of having the fewest related pairs; for infinite sets is the unique minimal transitive superset of .
For examp... | Transitive closure | Mathematics | 1,974 |
5,625,361 | https://en.wikipedia.org/wiki/Phosphoenolpyruvate%20carboxylase | Phosphoenolpyruvate carboxylase (also known as PEP carboxylase, PEPCase, or PEPC; , PDB ID: 3ZGE) is an enzyme in the family of carboxy-lyases found in plants and some bacteria that catalyzes the addition of bicarbonate (HCO3−) to phosphoenolpyruvate (PEP) to form the four-carbon compound oxaloacetate and inorganic pho... | Phosphoenolpyruvate carboxylase | Chemistry,Biology | 2,066 |
1,301,687 | https://en.wikipedia.org/wiki/Wallis%20product | The Wallis product is the infinite product representation of :
It was published in 1656 by John Wallis.
Proof using integration
Wallis derived this infinite product using interpolation, though his method is not regarded as rigorous. A modern derivation can be found by examining for even and odd values of , and not... | Wallis product | Mathematics | 465 |
47,105,636 | https://en.wikipedia.org/wiki/Thomas%20Maddock%27s%20Sons%20Company | Thomas Maddock's Sons Company was founded by Thomas Maddock.
History
The firm was originally named 'Millington & Asthury, before Maddock joined it in 1872. It was subsequently renamed 'Millington, Astbury & Maddock the next year. When Millington left, it became Asthury & Maddock, before assuming the name Thomas Maddo... | Thomas Maddock's Sons Company | Biology | 236 |
1,804,365 | https://en.wikipedia.org/wiki/Retrograde%20inversion | In music theory, retrograde inversion is a musical term that literally means "backwards and upside down": "The inverse of the series is sounded in reverse order." Retrograde reverses the order of the motif's pitches: what was the first pitch becomes the last, and vice versa. This is a technique used in music, specifica... | Retrograde inversion | Physics | 408 |
27,242,038 | https://en.wikipedia.org/wiki/Pilar%20Ruiz-Lapuente | Pilar Ruiz-Lapuente (born 1964, Barcelona) is an astrophysicist working as a professor at the University of Barcelona. Her work has included research on type Ia supernovae. In 2004, she led the team that searched for the companion star to the white dwarf that became supernova SN 1572, observed by Tycho Brahe, among oth... | Pilar Ruiz-Lapuente | Astronomy | 541 |
209,627 | https://en.wikipedia.org/wiki/Klein%E2%80%93Gordon%20equation | The Klein–Gordon equation (Klein–Fock–Gordon equation or sometimes Klein–Gordon–Fock equation) is a relativistic wave equation, related to the Schrödinger equation. It is second-order in space and time and manifestly Lorentz-covariant. It is a differential equation version of the relativistic energy–momentum relation .... | Klein–Gordon equation | Physics,Mathematics | 3,441 |
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