id int64 580 79M | url stringlengths 31 175 | text stringlengths 9 245k | source stringlengths 1 109 | categories stringclasses 160
values | token_count int64 3 51.8k |
|---|---|---|---|---|---|
47,926,198 | https://en.wikipedia.org/wiki/Open%20Tree%20of%20Life | The Open Tree of Life is an online phylogenetic tree of life – a collaborative effort, funded by the National Science Foundation. The first draft, including 2.3 million species, was released in September 2015. The Interactive graph allows the user to zoom in to taxonomic classifications, phylogenetic trees, and informa... | Open Tree of Life | Biology,Environmental_science | 224 |
35,215,267 | https://en.wikipedia.org/wiki/Young%E2%80%93Deruyts%20development | In mathematics, the Young–Deruyts development is a method of writing invariants of an action of a group on an n-dimensional vector space V
in terms of invariants depending on at most n–1 vectors .
References
Invariant theory | Young–Deruyts development | Physics | 50 |
22,483,813 | https://en.wikipedia.org/wiki/%C5%81ojasiewicz%20inequality | 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 Rn, and let Z be the zero locus of ƒ. Assume th... | Łojasiewicz inequality | Mathematics | 581 |
33,214,426 | https://en.wikipedia.org/wiki/Stuart%20Pivar | Stuart Pivar (born 1930) is an American chemist and art collector known for his unorthodox views about evolution. Trained as a scientist, Pivar has long endorsed the study of anatomy and need for artists to acquire technical skills. He grew his fortune in the plastics industry and is also the author of several books. P... | Stuart Pivar | Biology | 1,104 |
9,481,141 | https://en.wikipedia.org/wiki/Polyvinyl%20nitrate | Polyvinyl nitrate (abbreviated: PVN) is a high-energy polymer with the idealized formula of [CH2CH(ONO2)]. Polyvinyl nitrate is a long carbon chain (polymer) with nitrate groups (-O-NO2) bonded randomly along the chain. PVN is a white, fibrous solid, and is soluble in polar organic solvents such as acetone. PVN can be ... | Polyvinyl nitrate | Physics,Chemistry | 1,549 |
716,048 | https://en.wikipedia.org/wiki/Thorotrast | Thorotrast is a suspension containing particles of the radioactive compound thorium dioxide, ThO2; it was used as a radiocontrast agent in clinical radiography in the 1930s to 1950s. It is no longer used clinically.
Thorium compounds produce excellent images because of thorium's high opacity to X-rays (it has a high c... | Thorotrast | Chemistry | 873 |
19,356,049 | https://en.wikipedia.org/wiki/Emulation%20%28observational%20learning%29 | In emulation learning, subjects learn about parts of their environment and use this to achieve their own goals and is an observational learning mechanism (sometimes called social learning mechanisms).
In this context, emulation was first coined by child psychologist David Wood in 1988. In 1990 "emulation" was taken up... | Emulation (observational learning) | Biology | 1,266 |
28,073,818 | https://en.wikipedia.org/wiki/Hellenic%20Geodetic%20Reference%20System%201987 | The Hellenic Geodetic Reference System 1987 or HGRS87 () is a geodetic system commonly used in Greece (SRID=2100). The system specifies a local geodetic datum and a projection system. In some documents it is called Greek Geodetic Reference System 1987 or GGRS87.
HGRS87 datum
HGRS87 specifies a non-geocentric datum th... | Hellenic Geodetic Reference System 1987 | Mathematics | 960 |
64,321,036 | https://en.wikipedia.org/wiki/Alexander%20Glazastikov | Alexander Olegovich Glazastikov () is a Russian co-founder of the anonymous group Shaltai Boltai. In 2017, he applied for political asylum in Estonia. In October 2018, he was arrested in absentia in Russia.
Early interactions with Anikeyev
Glazastikov reportedly met Vladimir Anikeyev at a party in Russia sometime betw... | Alexander Glazastikov | Technology | 301 |
41,533,457 | https://en.wikipedia.org/wiki/11%20Persei | 11 Persei is a single star in the constellation of Perseus, located about 418 light years away from the Sun. It is visible to the naked eye as a dim, blue-white hued star with an apparent visual magnitude of 5.76.
This is a chemically peculiar mercury-manganese star. Cowley (1972) found a stellar classification of , w... | 11 Persei | Astronomy | 223 |
44,960,229 | https://en.wikipedia.org/wiki/Strategic%20pluralism | Strategic pluralism (also known as the dual-mating strategy) is a theory in evolutionary psychology regarding human mating strategies that suggests women have evolved to evaluate men in two categories: whether they are reliable long term providers, and whether they contain high quality genes. The theory of strategic pl... | Strategic pluralism | Biology | 562 |
1,007,921 | https://en.wikipedia.org/wiki/Identification%20%28information%29 | For data storage, identification is the capability to find, retrieve, report, change, or delete specific data without ambiguity. This applies especially to information stored in databases. In database normalisation, the process of organizing the fields and tables of a relational database to minimize redundancy and depe... | Identification (information) | Engineering | 394 |
1,041,812 | https://en.wikipedia.org/wiki/Superpotential | In theoretical physics, the superpotential is a function in supersymmetric quantum mechanics. Given a superpotential, two "partner potentials" are derived that can each serve as a potential in the Schrödinger equation. The partner potentials have the same spectrum, apart from a possible eigenvalue of zero, meaning that... | Superpotential | Physics | 829 |
4,390,618 | https://en.wikipedia.org/wiki/Solketal | Solketal is a protected form of glycerol with an isopropylidene acetal group joining two neighboring hydroxyl groups. Solketal contains a chiral center on the center carbon of the glycerol backbone, and so can be purchased as either the racemate or as one of the two enantiomers. Solketal has been used extensively in th... | Solketal | Chemistry | 278 |
19,660,624 | https://en.wikipedia.org/wiki/Ursell%20function | In statistical mechanics, an Ursell function or connected correlation function, is a cumulant of a random variable. It can often be obtained by summing over connected Feynman diagrams (the sum over all Feynman diagrams gives the correlation functions).
The Ursell function was named after Harold Ursell, who introduced ... | Ursell function | Physics | 226 |
40,419,048 | https://en.wikipedia.org/wiki/Macrocarpamine | Macrocarpamine is an Alstonia alkaloid with antiplasmodial activity.
References
Indole alkaloids | Macrocarpamine | Chemistry | 28 |
8,533,909 | https://en.wikipedia.org/wiki/Recursive%20join | The recursive join is an operation used in relational databases, also sometimes called a "fixed-point join". It is a compound operation that involves repeating the join operation, typically accumulating more records each time, until a repetition makes no change to the results (as compared to the results of the previous... | Recursive join | Technology | 368 |
14,323,631 | https://en.wikipedia.org/wiki/Old%20Street%20Roundabout | Old Street Roundabout is a road junction in Central London, England. Historically a square roundabout, it is now a three-way junction. It is among access points of the Inner Ring Road for the adjoining St Luke's south part of Islington and the City of London beyond, west and south, respectively. It is roughly on the we... | Old Street Roundabout | Technology | 758 |
47,328,766 | https://en.wikipedia.org/wiki/Beer%20chemistry | The chemical compounds in beer give it a distinctive taste, smell and appearance. The majority of compounds in beer come from the metabolic activities of plants and yeast and so are covered by the fields of biochemistry and organic chemistry. The main exception is that beer contains over 90% water and the mineral ions ... | Beer chemistry | Chemistry | 3,094 |
14,483,033 | https://en.wikipedia.org/wiki/Aurora%20%28protocol%29 | The Aurora Protocol is a link layer communications protocol for use on point-to-point serial links. Developed by Xilinx, it is intended for use in high-speed (gigabits/second and more) connections internally in a computer or in an embedded system. It uses either 8b/10b encoding or 64b/66b encoding.
External links
Of... | Aurora (protocol) | Technology | 98 |
1,159,033 | https://en.wikipedia.org/wiki/Boule%20%28crystal%29 | A boule is a single-crystal ingot produced by synthetic means.
A boule of silicon is the starting material for most of the integrated circuits used today. In the semiconductor industry synthetic boules can be made by a number of methods, such as the Bridgman technique and the Czochralski process, which result in a cyl... | Boule (crystal) | Chemistry,Materials_science | 234 |
2,665,417 | https://en.wikipedia.org/wiki/Gujarati%20numerals | Gujarati numerals is the numeral system of the Gujarati script of South Asia, which is a derivative of Devanagari numerals. It is the official numeral system of Gujarat, India. It is also officially recognized in India and as a minor script in Pakistan.
Digits
The following table shows Gujarati digits and the Gujarat... | Gujarati numerals | Mathematics | 126 |
68,445,549 | https://en.wikipedia.org/wiki/Mizab%20al-Rahma | The Mīzāb al-Raḥma (, 'gutter of mercy'), also known as the Mīzāb al-Kaʿba ('gutter of the Kaʿba'), is a rain gutter projecting from the roof of the Kaʿba enabling rainwater to pour to the ground below.
Architecture
The roof of the Kaʿba is flat, but slopes gently down to the north-west corner. From this corner, the ... | Mizab al-Rahma | Chemistry,Environmental_science | 1,101 |
15,355,129 | https://en.wikipedia.org/wiki/WNT7B | Wnt7b is a signaling protein that plays a crucial role for many developmental processes including placental, lung, eye, dendrite, and bone formation along with kidney development. The primary role of Wnt7b is to establish the cortico-medullary axis of epithelial organization.
Protein Wnt-7b is a protein that in humans... | WNT7B | Chemistry | 636 |
8,908,895 | https://en.wikipedia.org/wiki/Thioacetic%20acid | Thioacetic acid is an organosulfur compound with the molecular formula . It is a thioic acid: the sulfur analogue of acetic acid (), as implied by the thio- prefix. It is a yellow liquid with a strong thiol-like odor. It is used in organic synthesis for the introduction of thiol groups () in molecules.
Synthesis and p... | Thioacetic acid | Chemistry | 503 |
213,380 | https://en.wikipedia.org/wiki/Left-%20and%20right-hand%20traffic | Left-hand traffic (LHT) and right-hand traffic (RHT) are the practices, in bidirectional traffic, of keeping to the left side and to the right side of the road, respectively. They are fundamental to traffic flow, and are sometimes called the rule of the road. The terms right- and left-hand drive refer to the position o... | Left- and right-hand traffic | Physics,Chemistry,Biology | 6,913 |
48,429,332 | https://en.wikipedia.org/wiki/Isoazimuth | The isoazimuth is the locus of the points on the Earth's surface whose initial orthodromic course with respect to a fixed point is constant.
That is, if the initial orthodromic course Z from the starting point S to the fixed point X is 80 degrees, the associated isoazimuth is formed by all points whose initial orthod... | Isoazimuth | Astronomy | 451 |
3,198,102 | https://en.wikipedia.org/wiki/Earth%20lodge | An earth lodge is a semi-subterranean building covered partially or completely with earth, best known from the Native American cultures of the Great Plains and Eastern Woodlands. Most earth lodges are circular in construction with a dome-like roof, often with a central or slightly offset smoke hole at the apex of the ... | Earth lodge | Engineering | 1,008 |
3,864,929 | https://en.wikipedia.org/wiki/GRDDL | GRDDL (pronounced "griddle") is a markup format for Gleaning Resource Descriptions from Dialects of Languages. It is a W3C Recommendation, and enables users to obtain RDF triples out of XML documents, including XHTML. The GRDDL specification shows examples using XSLT, however it was intended to be abstract enough to al... | GRDDL | Technology | 905 |
47,786,948 | https://en.wikipedia.org/wiki/Appreciative%20inquiry%20in%20education | Appreciative Inquiry (AI) is an approach that believes improvement is more engaging when the focus is made on the strengths rather than the weaknesses. People tend to respond to positive statements but react to negative statements that concern them. Children are more sensitive to their self-worth and thrive on what mak... | Appreciative inquiry in education | Biology | 1,332 |
35,757,264 | https://en.wikipedia.org/wiki/Prescriptive%20analytics | Prescriptive analytics is a form of business analytics which suggests decision options for how to take advantage of a future opportunity or mitigate a future risk, and shows the implication of each decision option. It enables an enterprise to consider "the best course of action to take" in the light of information deri... | Prescriptive analytics | Technology | 2,818 |
222,850 | https://en.wikipedia.org/wiki/Guinness%20Book%20of%20Astronomy | The Guinness Book of Astronomy is a book () by the British astronomer Patrick Moore, first published in 1979, and running to seven editions.
The first part of the book is written like a Guinness Book of Records, with paragraphs like "the most luminous star", "the farthest star", and so on. Solar System objects are exp... | Guinness Book of Astronomy | Astronomy | 140 |
10,035,905 | https://en.wikipedia.org/wiki/Integrated%20computational%20materials%20engineering | Integrated Computational Materials Engineering (ICME) is an approach to design products, the materials that comprise them, and their associated materials processing methods by linking materials models at multiple length scales. Key words are "Integrated", involving integrating models at multiple length scales, and "En... | Integrated computational materials engineering | Physics,Materials_science,Engineering | 2,506 |
46,257,702 | https://en.wikipedia.org/wiki/North%20Arm%20Powder%20Magazine | The North Arm Powder Magazine near Port Adelaide, South Australia, was from 1858 to 1906 a secure storage facility for dynamite and gelignite used in the construction, mining and quarrying industries.
Location
The magazine was in Gillman near Port Adelaide at the North Arm of the Port River only 9 metres away from th... | North Arm Powder Magazine | Chemistry | 296 |
70,382 | https://en.wikipedia.org/wiki/Blossom | In botany, blossoms are the flowers of stone fruit trees (genus Prunus) and of some other plants with a similar appearance that flower profusely for a period of time in spring.
Colloquially, flowers of orange are referred to as such as well. Peach blossoms (including nectarine), most cherry blossoms, and some almond b... | Blossom | Biology | 473 |
61,569,211 | https://en.wikipedia.org/wiki/Superior%3A%20The%20Return%20of%20Race%20Science | Superior: The Return of Race Science is a non-fiction book by Angela Saini published in 2019. Built around interviews with experts, the scientific consensus, and the author's analysis, it argues that some fields of biology are still influenced by the discredited scientific racism theories of the 19th century.
Summary
... | Superior: The Return of Race Science | Biology | 727 |
76,989,865 | https://en.wikipedia.org/wiki/Mindar | Mindar (), also known as Android Kannon Mindar, is an android preacher at the Kōdai-ji temple in Kyoto, Japan. The humanoid robot regularly gives sermons on the Heart Sutra at the 400-year-old Zen Buddhist temple. It was created to represent and embody Kannon, a bodhisattva associated with compassion.
Mindar was desig... | Mindar | Engineering | 1,515 |
23,402,417 | https://en.wikipedia.org/wiki/Slowloris%20%28cyber%20attack%29 | Slowloris is a type of denial of service attack tool which allows a single machine to take down another machine's web server with minimal bandwidth and side effects on unrelated services and ports.
Slowloris tries to keep many connections to the target web server open and hold them open as long as possible. It accompl... | Slowloris (cyber attack) | Technology | 1,333 |
953,723 | https://en.wikipedia.org/wiki/Historadiography | Historadiography is a technique formerly utilized in the fields of histology and cellular biology to provide semiquantitative information regarding the density of a tissue sample. It is usually synonymous with microradiography. This is achieved by layering a ground section of mineralized tissue (such as bone) with ph... | Historadiography | Chemistry | 226 |
9,010,488 | https://en.wikipedia.org/wiki/Samsung%20Electro-Mechanics | Samsung Electro-Mechanics (SEM, ) is a multinational electronic component company headquartered in Suwon, Gyeonggi Province, South Korea. It is a subsidiary of the Samsung Group. The company produces chip parts such as MLCCs, , camera modules, network modules and printed circuit boards.
Established in 1973 as Samsung ... | Samsung Electro-Mechanics | Technology | 598 |
24,436,577 | https://en.wikipedia.org/wiki/Variation%20of%20information | In probability theory and information theory, the variation of information or shared information distance is a measure of the distance between two clusterings (partitions of elements). It is closely related to mutual information; indeed, it is a simple linear expression involving the mutual information. Unlike the mu... | Variation of information | Physics,Mathematics | 609 |
381,323 | https://en.wikipedia.org/wiki/Chicken%20%28game%29 | The game of chicken, also known as the hawk-dove game or snowdrift game, is a model of conflict for two players in game theory. The principle of the game is that while the ideal outcome is for one player to yield (to avoid the worst outcome if neither yields), individuals try to avoid it out of pride, not wanting to lo... | Chicken (game) | Mathematics | 4,929 |
1,325,302 | https://en.wikipedia.org/wiki/Radar%20detector | A radar detector is an electronic device used by motorists to detect if their speed is being monitored by police or law enforcement using a radar gun. Most radar detectors are used so the driver can reduce the car's speed before being ticketed for speeding. In general sense, only emitting technologies, like doppler RAD... | Radar detector | Technology | 1,810 |
57,591,866 | https://en.wikipedia.org/wiki/National%20Initiative%20for%20Cybersecurity%20Education | The National Initiative for Cybersecurity Education (NICE) is a partnership between government, academia, and the private sector focused supporting the country's ability to address current and future cybersecurity education and workforce challenges through standards and best practices. NICE is led by the National Insti... | National Initiative for Cybersecurity Education | Engineering | 544 |
2,064,584 | https://en.wikipedia.org/wiki/Click-through%20rate | Click-through rate (CTR) is the ratio of clicks on a specific link to the number of times a page, email, or advertisement is shown. It is commonly used to measure the success of an online advertising campaign for a particular website, as well as the effectiveness of email campaigns.
Click-through rates for ad campaign... | Click-through rate | Biology | 1,516 |
14,167,920 | https://en.wikipedia.org/wiki/GABRB3 | Gamma-aminobutyric acid receptor subunit beta-3 is a protein that in humans is encoded by the GABRB3 gene. It is located within the 15q12 region in the human genome and spans 250kb. This gene includes 10 exons within its coding region. Due to alternative splicing, the gene codes for many protein isoforms, all being sub... | GABRB3 | Chemistry | 2,042 |
14,878,473 | https://en.wikipedia.org/wiki/SIPA1 | Signal-induced proliferation-associated protein 1 is a protein that in humans is encoded by the SIPA1 gene.
The product of this gene is a mitogen induced GTPase activating protein (GAP). It exhibits a specific GAP activity for Ras-related regulatory proteins Rap1 and Rap2, but not for Ran or other small GTPases. This ... | SIPA1 | Chemistry | 125 |
1,321,065 | https://en.wikipedia.org/wiki/Myoporum%20laetum | Myoporum laetum, commonly known as ngaio ( , ) or mousehole tree, is a species of flowering plant in the family Scrophulariaceae and is endemic to New Zealand. It is a fast growing shrub or small tree with lance-shaped leaves, the edges with small serrations, and white flowers with small purple spots and 4 stamens.
De... | Myoporum laetum | Astronomy | 594 |
78,864,569 | https://en.wikipedia.org/wiki/Oenethyl | Oenethyl, also known as 2-methylaminoheptane and sold under the brand names Pacamine and Neosupranol, is a sympathomimetic and vasopressor medication of the alkylamine which is no longer marketed. It was used as a nasal decongestant and to control blood pressure during anesthesia. It is closely structurally related to ... | Oenethyl | Chemistry | 196 |
51,517,357 | https://en.wikipedia.org/wiki/Nintendo%20hard | "Nintendo hard" is an informal term used to describe extreme difficulty in video games. It often refers to games with trial-and-error gameplay and limited or nonexistent saving of progress. The enduring term originated with Nintendo Entertainment System (NES) games from the mid-1980s to early 1990s, such as Ghosts 'n G... | Nintendo hard | Technology | 629 |
32,611,592 | https://en.wikipedia.org/wiki/Dual%20ignition | Dual Ignition is a system for spark-ignition engines, whereby critical ignition components, such as spark plugs and magnetos, are duplicated. Dual ignition is most commonly employed on aero engines, and is sometimes found on cars and motorcycles.
Dual ignition provides two advantages: redundancy in the event of in-fl... | Dual ignition | Technology | 1,043 |
22,361,204 | https://en.wikipedia.org/wiki/March%202045%20lunar%20eclipse | A penumbral lunar eclipse will occur at the Moon’s descending node of orbit on Friday, March 3, 2045, with an umbral magnitude of −0.0148. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A penumbral lunar eclipse occurs when part or all of the Moon's near side passes... | March 2045 lunar eclipse | Astronomy | 621 |
12,647,784 | https://en.wikipedia.org/wiki/Meuse/Haute%20Marne%20Underground%20Research%20Laboratory | The Meuse/Haute Marne Underground Research Laboratory is a laboratory located 500 metres underground in Bure in the Meuse département. It allows study of the geological formation in order to evaluate its capacity for deep geological repository of high-level and long-lived medium-level radioactive waste. It is managed b... | Meuse/Haute Marne Underground Research Laboratory | Engineering | 901 |
45,621 | https://en.wikipedia.org/wiki/Psychopharmacology | Psychopharmacology (from Greek ; ; and ) is the scientific study of the effects drugs have on mood, sensation, thinking, behavior, judgment and evaluation, and memory. It is distinguished from neuropsychopharmacology, which emphasizes the correlation between drug-induced changes in the functioning of cells in the nervo... | Psychopharmacology | Chemistry | 5,676 |
58,767,235 | https://en.wikipedia.org/wiki/Denis%20Osin | Denis Osin is a mathematician at Vanderbilt University working in geometric group theory and geometric topology.
Career
Osin received a PhD at Moscow State University in 1999 under the supervision of Aleksandr Olshansky. He worked at the Financial University under the Government of the Russian Federation, at the City... | Denis Osin | Mathematics | 180 |
41,210,630 | https://en.wikipedia.org/wiki/Tormentic%20acid | Tormentic acid is a chemical compound isolated from Luehea divaricata and Agrimonia eupatoria. Tormentic acid derivatives have been synthesized and studied.
References
Grewioideae
Rosoideae
Triterpenes | Tormentic acid | Chemistry | 49 |
61,498,907 | https://en.wikipedia.org/wiki/C13H21N5O2 | {{DISPLAYTITLE:C13H21N5O2}}
The molecular formula C13H21N5O2 (molar mass: 279.34 g/mol, exact mass: 279.1695 u) may refer to:
Etamiphylline
Tezampanel | C13H21N5O2 | Chemistry | 63 |
21,538,638 | https://en.wikipedia.org/wiki/2012%20phenomenon | The 2012 phenomenon was a range of eschatological beliefs that cataclysmic or transformative events would occur on or around 21 December 2012. This date was regarded as the end-date of a 5,126-year-long cycle in the Mesoamerican Long Count calendar, and festivities took place on 21 December 2012 to commemorate the even... | 2012 phenomenon | Mathematics | 10,154 |
8,732,068 | https://en.wikipedia.org/wiki/New%20Holland%20Brewing%20Company | New Holland Brewing Company is an American independent craft brewing and distilling company headquartered in Holland, Michigan. It also owns and operates brewpub-style restaurants and spirits-tasting rooms located across West Michigan. The company's craft-style beer brands Dragon's Milk, Tangerine Space Machine, and sp... | New Holland Brewing Company | Chemistry | 409 |
1,030,401 | https://en.wikipedia.org/wiki/Humic%20substance | Humic substances (HS) are colored relatively recalcitrant organic compounds naturally formed during long-term decomposition and transformation of biomass residues. The color of humic substances varies from bright yellow to light or dark brown leading to black. The term comes from humus, which in turn comes from the Lat... | Humic substance | Chemistry | 3,420 |
1,693,711 | https://en.wikipedia.org/wiki/Pseudaconitine | Pseudaconitine, also known as nepaline (C36H51NO12), is an extremely toxic alkaloid found in high quantities in the roots of Aconitum ferox, also known as Indian Monkshood, which belongs to the family Ranunculaceae. The plant is found in East Asia, including the Himalayas.
History
Pseudaconitine was discovered in 187... | Pseudaconitine | Chemistry | 403 |
60,999,682 | https://en.wikipedia.org/wiki/Alizarin%20Red%20S | Alizarin Red S (also known as C.I. Mordant Red 3, Alizarin Carmine, and C.I 58005.) is a water-soluble sodium salt of Alizarin sulfonic acid with a chemical formula of . Alizarin Red S was discovered by Graebe and Liebermann in 1871. In the field of histology alizarin Red S is used to stain calcium deposits in tissues,... | Alizarin Red S | Chemistry,Biology | 329 |
16,616,885 | https://en.wikipedia.org/wiki/Cognitive%20resource%20theory | Cognitive resource theory (CRT) is a leadership theory of industrial and organisational psychology developed by Fred Fiedler and Joe Garcia in 1987 as a reconceptualisation of the Fiedler contingency model. The theory focuses on the influence of the leader's intelligence and experience on their reaction to stress.
The... | Cognitive resource theory | Biology | 1,322 |
59,953,630 | https://en.wikipedia.org/wiki/Wildlife%20of%20Norway | The wildlife of Norway includes the diverse flora and fauna of Norway. The habitats include high mountains, tundras, rivers, lakes, wetlands, sea coast and some lower cultivated land in the south. Mainland Norway has a long coastline, protected by skerries and much dissected by fjords, and the mostly-icebound archipela... | Wildlife of Norway | Biology | 1,441 |
2,529,979 | https://en.wikipedia.org/wiki/Meldrum%27s%20acid | Meldrum's acid or 2,2-dimethyl-1,3-dioxane-4,6-dione is an organic compound with formula . Its molecule has a heterocyclic core with four carbon and two oxygen atoms; the formula can also be written as .
It is a crystalline colorless solid, sparingly soluble in water. It decomposes on heating with release of carbon d... | Meldrum's acid | Chemistry | 1,052 |
8,386,159 | https://en.wikipedia.org/wiki/Ledeburite | In iron and steel metallurgy, ledeburite is a mixture of 4.3% carbon in iron and is a eutectic mixture of austenite and cementite. Ledeburite is not a type of steel as the carbon level is too high although it may occur as a separate constituent in some high carbon steels. It is mostly found with cementite or pearlite i... | Ledeburite | Chemistry,Materials_science,Engineering | 623 |
19,525,611 | https://en.wikipedia.org/wiki/HD%2090089 | HD 90089 (HR 4084; Gliese 392.1) is a star located in the northern circumpolar constellation Camelopardalis. With an apparent magnitude of 5.25, it is faintly visible to the naked eye under ideal conditions. This star is located relatively close at a distance of 75 light years, but is drifting away at a rate of almost ... | HD 90089 | Astronomy | 368 |
13,544,815 | https://en.wikipedia.org/wiki/Casein%20nutrient%20agar | Casein nutrient agar (CN) is a growth medium used to culture isolates of lactic acid bacteria such as Streptococcus thermophilus and Lactobacillus bulgaricus. It is composed of standard nutrient agar with the added ingredient of skim milk powder, which contains casein. Lactic Acid Bacteria will precipitate casein out o... | Casein nutrient agar | Biology | 128 |
669,552 | https://en.wikipedia.org/wiki/Modular%20curve | In number theory and algebraic geometry, a modular curve Y(Γ) is a Riemann surface, or the corresponding algebraic curve, constructed as a quotient of the complex upper half-plane H by the action of a congruence subgroup Γ of the modular group of integral 2×2 matrices SL(2, Z). The term modular curve can also be used t... | Modular curve | Mathematics | 2,195 |
22,579,952 | https://en.wikipedia.org/wiki/Linear%20ion%20trap | The linear ion trap (LIT) is a type of ion trap mass spectrometer.
In a LIT, ions are confined radially by a two-dimensional radio frequency (RF) field, and axially by stopping potentials applied to end electrodes.
LITs have high injection efficiencies and high ion storage capacities.
History
One of the first LITs ... | Linear ion trap | Physics,Chemistry | 1,310 |
76,817,857 | https://en.wikipedia.org/wiki/Alalevonadifloxacin | Alalevonadifloxacin (trade name Emrok O) is an antibiotic of the fluoroquinolone class. It is a prodrug of levonadifloxacin with increased oral bioavailability. In India, it is approved for the treatment of infections with Gram-positive bacteria.
References
Fluoroquinolone antibiotics
Prodrugs
Carboxylic acids
Pip... | Alalevonadifloxacin | Chemistry | 99 |
56,414,357 | https://en.wikipedia.org/wiki/Phase%20precession | Phase precession is a neurophysiological process in which the time of firing of action potentials by individual neurons occurs progressively earlier in relation to the phase of the local field potential oscillation with each successive cycle. In place cells, a type of neuron found in the hippocampal region of the brain... | Phase precession | Physics,Biology | 1,096 |
9,585,894 | https://en.wikipedia.org/wiki/Kohn%20anomaly | A Kohn anomaly or the Kohn effect is an anomaly in the dispersion relation of a phonon branch in a metal. The anomaly is named for Walter Kohn, who first proposed it in 1959.
Description
In condensed matter physics, a Kohn anomaly (also called the Kohn effect) is an anomaly in the dispersion relation of a phonon bran... | Kohn anomaly | Physics,Chemistry,Materials_science,Engineering | 636 |
62,153,058 | https://en.wikipedia.org/wiki/Polytopological%20space | In general topology, a polytopological space consists of a set together with a family of topologies on that is linearly ordered by the inclusion relation where is an arbitrary index set. It is usually assumed that the topologies are in non-decreasing order. However some authors prefer the associated closure operato... | Polytopological space | Physics,Mathematics | 322 |
20,000,172 | https://en.wikipedia.org/wiki/Diazenylium | Diazenylium is the chemical N2H+, an inorganic cation that was one of the first ions to be observed in interstellar clouds. Since then, it has been observed for in several different types of interstellar environments, observations that have several different scientific uses. It gives astronomers information about the... | Diazenylium | Physics,Chemistry | 1,691 |
60,392,089 | https://en.wikipedia.org/wiki/Cyclopentadienyl%20magnesium%20bromide | Cyclopentadienyl magnesium bromide is a chemical compound with the molecular formula . The molecule consists of a magnesium atom bonded to a bromine atom and a cyclopentadienyl group, a ring of five carbons each with one hydrogen atom.
The compound is a Grignard reagent, a type of organometallic compound that feature... | Cyclopentadienyl magnesium bromide | Chemistry | 170 |
6,028,132 | https://en.wikipedia.org/wiki/Open%20Hub | Open Hub or Black Duck Open Hub (formerly Ohloh) is a website which provides a web services suite and online community platform that aims to index the open-source software development community. It was founded by former Microsoft managers Jason Allen and Scott Collison in 2004 and joined by the developer Robin Luckey. ... | Open Hub | Mathematics,Technology,Engineering | 971 |
17,994,688 | https://en.wikipedia.org/wiki/HD%20221246 | HD 221246 or NGC 7686 1 is a star in open cluster NGC 7686, and it belongs to the northern constellation of Andromeda. With an apparent visual magnitude of 6.17, it can be viewed by the naked eye only under very favourable conditions. It has a spectral classification of K3III, meaning it is an evolved orange giant star... | HD 221246 | Astronomy | 131 |
1,100,001 | https://en.wikipedia.org/wiki/Einselection | In quantum mechanics, einselections, short for "environment-induced superselection", is a name coined by Wojciech H. Zurek
for a process which is claimed to explain the appearance of wavefunction collapse and the emergence of classical descriptions of reality from quantum descriptions. In this approach, classicality... | Einselection | Physics | 949 |
3,373,650 | https://en.wikipedia.org/wiki/Earth%20systems%20engineering%20and%20management | Earth systems engineering and management (ESEM) is a discipline used to analyze, design, engineer and manage complex environmental systems. It entails a wide range of subject areas including anthropology, engineering, environmental science, ethics and philosophy. At its core, ESEM looks to "rationally design and manage... | Earth systems engineering and management | Chemistry,Engineering,Environmental_science | 2,356 |
10,256,327 | https://en.wikipedia.org/wiki/Natural%20circulation%20boiler | In a natural circulation boiler the circulation is achieved by the difference in density when the water in the boiler is heated. In natural circulation steam boilers the circulation of water is by convection currents, which are set up during the heating of water. In most of the boilers there is a natural circulation of... | Natural circulation boiler | Chemistry,Engineering | 89 |
59,882,447 | https://en.wikipedia.org/wiki/List%20of%20protein%20tandem%20repeat%20annotation%20software | Computational methods use different properties of protein sequences and structures to find, characterize and annotate protein tandem repeats.
Sequence-based annotation methods
Structure-based annotation methods
References | List of protein tandem repeat annotation software | Biology | 40 |
78,711,654 | https://en.wikipedia.org/wiki/Nomad%20%28eSIM%20company%29 | Nomad is a company that sells eSIMs (embedded SIMs), launched in 2020.
History
Nomad was launched in 2020 and is a business line of LotusFlare, Inc., a telecommunications software development company founded by former Facebook and Microsoft engineers.
Nomad is a connectivity marketplace that offers mobile data plans... | Nomad (eSIM company) | Technology,Engineering | 283 |
71,275,203 | https://en.wikipedia.org/wiki/Webb%27s%20First%20Deep%20Field | Webb's First Deep Field is the first operational image taken by the James Webb Space Telescope (JWST). The deep-field photograph, which covers a tiny area of sky visible from the Southern Hemisphere, is centered on SMACS 0723, a galaxy cluster in the constellation of Volans. Thousands of galaxies are visible in the ima... | Webb's First Deep Field | Physics,Astronomy | 938 |
58,503,642 | https://en.wikipedia.org/wiki/16-Methylene-17%CE%B1-hydroxyprogesterone%20acetate | 16-Methylene-17α-hydroxyprogesterone acetate is a progestin of the 17α-hydroxyprogesterone group which was never marketed. Given orally, it shows about 2.5-fold the progestogenic activity of parenteral progesterone in animal bioassays. It is a parent compound of the following clinically used progestins:
Chlormethenma... | 16-Methylene-17α-hydroxyprogesterone acetate | Chemistry | 234 |
709,092 | https://en.wikipedia.org/wiki/Floral%20symmetry | Floral symmetry describes whether, and how, a flower, in particular its perianth, can be divided into two or more identical or mirror-image parts.
Uncommonly, flowers may have no axis of symmetry at all, typically because their parts are spirally arranged.
Actinomorphic
Most flowers are actinomorphic ("star shaped"... | Floral symmetry | Biology | 804 |
70,276,963 | https://en.wikipedia.org/wiki/Charles%20Kurland | Charles Gabriel Kurland (born 14 January 1936) is an American-born Swedish biochemist.
Kurland earned a doctorate in 1961 at Harvard University, advised by James D. Watson. Kurland accepted a postdoctoral research position at the Microbiology Institute of the University of Copenhagen, then joined the Uppsala Universit... | Charles Kurland | Chemistry | 323 |
60,665,128 | https://en.wikipedia.org/wiki/Roland%20SP-808 | The Roland SP-808 GrooveSampler and SP-808EX/E-Mix Studio are both discontinued workstations, which function as digital samplers, synthesizers, and music sequencers. The digital samplers are a part of the long line of both Roland Corporation's and Boss Corporation's Groove Gear, which includes the more popular and succ... | Roland SP-808 | Engineering | 605 |
426,467 | https://en.wikipedia.org/wiki/Federation%20Square | Federation Square (marketed and colloquially known as Fed Square) is a venue for arts, culture and public events on the edge of the Melbourne central business district. It covers an area of at the intersection of Flinders and Swanston Streets built above busy railway lines and across the road from Flinders Street stat... | Federation Square | Engineering | 4,308 |
78,615,194 | https://en.wikipedia.org/wiki/Quasi-extinction | Quasi-extinction refers to the state in which a species or population has declined to critically low numbers, making its recovery highly unlikely, even though a small number of individuals may still persist. This concept is often used in conservation biology to identify species at extreme risk of extinction and to guid... | Quasi-extinction | Biology | 195 |
45,456,706 | https://en.wikipedia.org/wiki/Smooth%20maximum | In mathematics, a smooth maximum of an indexed family x1, ..., xn of numbers is a smooth approximation to the maximum function meaning a parametric family of functions such that for every , the function is smooth, and the family converges to the maximum function as . The concept of smooth minimum is similarly defin... | Smooth maximum | Mathematics | 617 |
42,689,427 | https://en.wikipedia.org/wiki/Ball-pen%20probe | A ball-pen probe is a modified Langmuir probe used to measure the plasma potential in magnetized plasmas. The ball-pen probe balances the electron and ion saturation currents, so that its floating potential is equal to the plasma potential. Because electrons have a much smaller gyroradius than ions, a moving ceramic sh... | Ball-pen probe | Physics,Technology,Engineering | 905 |
24,424,748 | https://en.wikipedia.org/wiki/CompoZr | The CompoZr Zinc finger nuclease (ZFN) platform is a technology developed by Sigma-Aldrich that allows researchers to target and manipulate the genome of living cells thereby creating cell lines or entire organisms with permanent and heritable gene deletions, insertions, or modifications.
The technology was releas... | CompoZr | Chemistry | 139 |
36,389,011 | https://en.wikipedia.org/wiki/USA-96 | USA-96, also known as GPS IIA-14, GPS II-23 and GPS SVN-34, is an American navigation satellite which is part of the Global Positioning System. It was 14 of 19 Block IIA GPS satellites to be launched, and the last one to be retired.
Background
Global Positioning System (GPS) was developed by the U.S. Department of De... | USA-96 | Technology | 615 |
6,974,982 | https://en.wikipedia.org/wiki/Sailing%20stones | Sailing stones (also called sliding rocks, walking rocks, rolling stones, and moving rocks) are part of the geological phenomenon in which rocks move and inscribe long tracks along a smooth valley floor without animal intervention. The movement of the rocks occurs when large, thin sheets of ice floating on an ephemeral... | Sailing stones | Physics | 2,958 |
16,879,665 | https://en.wikipedia.org/wiki/Circle%20packing | In geometry, circle packing is the study of the arrangement of circles (of equal or varying sizes) on a given surface such that no overlapping occurs and so that no circle can be enlarged without creating an overlap. The associated packing density, , of an arrangement is the proportion of the surface covered by the cir... | Circle packing | Mathematics | 1,126 |
1,403,932 | https://en.wikipedia.org/wiki/Polymer%20banknote | Polymer banknotes are banknotes made from a synthetic polymer such as biaxially oriented polypropylene (BOPP). Such notes incorporate many security features not available in paper banknotes, including the use of metameric inks. Polymer banknotes last significantly longer than paper notes, causing a decrease in environm... | Polymer banknote | Chemistry,Materials_science | 1,457 |
21,569,615 | https://en.wikipedia.org/wiki/Digital%20media%20service | A digital media service (DMS) is an online service provider that sells access to digital library of content such as films, software, games, images, literature, etc. While no transfer of property is made, a nearly perfect duplicate of the data (song movie, etc.) is made on a customer's computer. Content is either primar... | Digital media service | Technology | 477 |
16,713,163 | https://en.wikipedia.org/wiki/List%20of%20Intel%20manufacturing%20sites | Intel is an American multinational corporation and technology company headquartered in Santa Clara, California. Processors are manufactured in semiconductor fabrication plants called "fabs" which are then sent to assembly and testing sites before delivery to customers. Intel has stated that approximately 75% of their s... | List of Intel manufacturing sites | Technology | 315 |
18,592,503 | https://en.wikipedia.org/wiki/Reinhard%20Oehme | Reinhard Oehme (; born 26 January 1928, Wiesbaden; died sometime between 29 September and 4 October 2010, Hyde Park) was a German-American physicist known for the discovery of C (charge conjugation) non-conservation in the presence of P (parity) violation, the formulation and proof of hadron dispersion relations, the "... | Reinhard Oehme | Physics | 2,066 |
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