id int64 580 79M | url stringlengths 31 175 | text stringlengths 9 245k | source stringlengths 1 109 | categories stringclasses 160
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|---|---|---|---|---|---|
23,413,137 | https://en.wikipedia.org/wiki/Saccheri%E2%80%93Legendre%20theorem | In absolute geometry, the Saccheri–Legendre theorem states that the sum of the angles in a triangle is at most 180°. Absolute geometry is the geometry obtained from assuming all the axioms that lead to Euclidean geometry with the exception of the axiom that is equivalent to the parallel postulate of Euclid.
The theore... | Saccheri–Legendre theorem | Mathematics | 321 |
26,968,209 | https://en.wikipedia.org/wiki/Pisces%20Overdensity | The Pisces Overdensity is a clump of stars in the Milky Way's halo, which may be a disrupted dwarf spheroidal galaxy. It is situated in the Pisces constellation and was discovered in 2009 by analysis of distribution of RR Lyrae stars in the data obtained by the Sloan Digital Sky Survey's data. The galaxy is located at... | Pisces Overdensity | Astronomy | 222 |
2,393,371 | https://en.wikipedia.org/wiki/Quazepam | Quazepam, sold under the brand name Doral among others, is a relatively long-acting benzodiazepine derivative drug developed by the Schering Corporation in the 1970s. Quazepam is used for the treatment of insomnia, including sleep induction and sleep maintenance. Quazepam induces impairment of motor function and has re... | Quazepam | Chemistry,Biology | 2,343 |
42,732,578 | https://en.wikipedia.org/wiki/Defensive%20expenditures | In environmental accounting, defensive expenditures are expenditures that seek to minimise potential damage to oneself. Examples include defence and insurance.
References
Risk management
Actuarial science
Environmental economics
Expenditure | Defensive expenditures | Mathematics,Environmental_science | 36 |
44,595,512 | https://en.wikipedia.org/wiki/Behavioural%20design | Behavioural design is a sub-category of design, which is concerned with how design can shape, or be used to influence human behaviour. All approaches of design for behaviour change acknowledge that artifacts have an important influence on human behaviour and/or behavioural decisions. They strongly draw on theories of ... | Behavioural design | Engineering | 1,648 |
1,122,262 | https://en.wikipedia.org/wiki/Hauppauge%20Computer%20Works | Hauppauge Computer Works ( ) is a US manufacturer and marketer of electronic video hardware for personal computers. Although it is most widely known for its WinTV line of TV tuner cards for PCs, Hauppauge also produces personal video recorders, digital video editors, digital media players, hybrid video recorders and di... | Hauppauge Computer Works | Technology | 4,229 |
15,732,918 | https://en.wikipedia.org/wiki/The%20eclipse%20of%20Darwinism | Julian Huxley used the phrase "the eclipse of Darwinism" to describe the state of affairs prior to what he called the "modern synthesis". During the "eclipse", evolution was widely accepted in scientific circles but relatively few biologists believed that natural selection was its primary mechanism. Historians of scien... | The eclipse of Darwinism | Technology,Biology | 4,441 |
1,670,763 | https://en.wikipedia.org/wiki/Inrush%20current | Inrush current, input surge current, or switch-on surge is the maximal instantaneous input current drawn by an electrical device when first turned on. Alternating-current electric motors and transformers may draw several times their normal full-load current when first energized, for a few cycles of the input waveform. ... | Inrush current | Engineering | 1,915 |
21,080,132 | https://en.wikipedia.org/wiki/C8H6O | {{DISPLAYTITLE:C8H6O}}
The molecular formula C8H6O (molar mass: 118.13 g/mol, exact mass: 118.0419 u) may refer to:
Benzofuran
Isobenzofuran, or 2-Benzofuran
Molecular formulas | C8H6O | Physics,Chemistry | 68 |
4,576,485 | https://en.wikipedia.org/wiki/Brauer%27s%20theorem%20on%20forms | There also is Brauer's theorem on induced characters.
In mathematics, Brauer's theorem, named for Richard Brauer, is a result on the representability of 0 by forms over certain fields in sufficiently many variables.
Statement of Brauer's theorem
Let K be a field such that for every integer r > 0 there exists an integ... | Brauer's theorem on forms | Mathematics | 545 |
40,832,361 | https://en.wikipedia.org/wiki/Your%20Baby%27s%20Best%20Shot | Your Baby's Best Shot: Why Vaccines are Safe and Save Lives is a 2012 pro-vaccine book, published by Rowman and Littlefield, and written by E. Allison Hagood, a psychology professor, and Stacy Mintzer Herlihy, a freelance writer from Roseland, New Jersey. The foreword was written by Paul Offit.
Summary
The book's intr... | Your Baby's Best Shot | Chemistry,Biology | 324 |
1,432,190 | https://en.wikipedia.org/wiki/Paul%20Benacerraf | Paul Joseph Salomon Benacerraf (; born March 26, 1931) is a French-born American philosopher working in the field of the philosophy of mathematics who taught at Princeton University his entire career, from 1960 until his retirement in 2007. He was appointed Stuart Professor of Philosophy in 1974, and retired as the Ja... | Paul Benacerraf | Mathematics | 1,419 |
43,806,125 | https://en.wikipedia.org/wiki/Bytemark | Bytemark is a UK-based server hosting and datacentre provider, headquartered in York, United Kingdom. It was founded in 2002, and was the first provider of virtual machines and cloud hosting through User-mode Linux in 2003.
In 2012, the company launched BigV, a public cloud platform designed in-house using open source... | Bytemark | Technology | 484 |
8,563,981 | https://en.wikipedia.org/wiki/OMDoc | OMDoc (Open Mathematical Documents) is a semantic markup format for mathematical documents. While MathML only covers mathematical formulae and the related OpenMath standard only supports formulae and “content dictionaries” containing definitions of the symbols used in formulae, OMDoc covers the whole range of written m... | OMDoc | Mathematics,Technology | 608 |
7,995,881 | https://en.wikipedia.org/wiki/Tarari%2C%20Inc. | Tarari is a company that spun out of Intel in 2002. It has created a range of re-programmable silicon based on Xilinx Virtex-4 FPGA (Field Programmable Gate Array) and ASICs that offload and accelerate really complex algorithms such as XML Parsing, scanning for Computer viruses, email spam and intruders in Intrusion-... | Tarari, Inc. | Technology | 521 |
7,449,035 | https://en.wikipedia.org/wiki/Vibrator%20%28mechanical%29 | A vibrator is a mechanical device to generate vibrations. The vibration is often generated by an electric motor with an unbalanced mass on its driveshaft.
There are many different types of vibrator. Typically, they are components of larger products such as smartphones, pagers, or video game controllers with a "rumble"... | Vibrator (mechanical) | Physics,Technology,Engineering | 918 |
35,501,694 | https://en.wikipedia.org/wiki/Would%20It%20Kill%20You%20to%20Stop%20Doing%20That%3F | Would It Kill You To Stop Doing That? is a 2012 non-fiction book by the American humorist Henry Alford that details manners from around the world.
After being interested in a quote by Edmund Burke about how important manners are, Alford traveled around the world researching manners. He also interviews people such as e... | Would It Kill You to Stop Doing That? | Biology | 178 |
30,254,322 | https://en.wikipedia.org/wiki/Ebbw%20Vale%20Steelworks | Ebbw Vale Steelworks was an integrated steel mill located in Ebbw Vale, South Wales. Developed from 1790, by the late 1930s it had become the largest steel mill in Europe. It was nationalised after World War II. As the steel industry changed to bulk handling, iron and steel making was ceased in the 1970s, and the site ... | Ebbw Vale Steelworks | Chemistry | 2,990 |
33,193,835 | https://en.wikipedia.org/wiki/Westwallbunker%20%28Pachten%29 | Westwallbunker is a bunker and museum in Saarland, Germany, that was part of the Siegfried Line. The bunker was built in 1939.
See also
Regelbau
List of surviving elements of the Siegfried Line
External links
www.bunker20.de
Museums in Saarland
Siegfried Line
Buildings and structures in Saarlouis (district) | Westwallbunker (Pachten) | Engineering | 73 |
58,911,580 | https://en.wikipedia.org/wiki/Erika%20Mar%C3%ADn-Spiotta | Erika Marín-Spiotta is a biogeochemist and ecosystem ecologist. She is currently Professor of Geography at the University of Wisconsin-Madison. She is best-known for her research of the terrestrial carbon cycle and is an advocate for underrepresented groups in the sciences, specifically women.
Early life and education... | Erika Marín-Spiotta | Chemistry | 1,395 |
41,740,379 | https://en.wikipedia.org/wiki/Paolo%20Giubellino | Paolo Giubellino (born 9 November 1960) is an experimental particle physicist working on High-Energy Nuclear Collisions. Currently he is the joint Scientific Managing Director of the Facility for Antiproton and Ion Research (FAIR) and the GSI Helmholtz Centre for Heavy Ion Research (GSI) and Professor at the Institute ... | Paolo Giubellino | Physics | 2,215 |
8,286,185 | https://en.wikipedia.org/wiki/Superabsorbent%20polymer | A superabsorbent polymer (SAP) (also called slush powder) is a water-absorbing hydrophilic homopolymers or copolymers that can absorb and retain extremely large amounts of a liquid relative to its own mass.
Water-absorbing polymers, which are classified as hydrogels when mixed, absorb aqueous solutions through hydroge... | Superabsorbent polymer | Chemistry,Materials_science | 1,828 |
4,276,393 | https://en.wikipedia.org/wiki/Group%20with%20operators | In abstract algebra, a branch of mathematics, a group with operators or Ω-group is an algebraic structure that can be viewed as a group together with a set Ω that operates on the elements of the group in a special way.
Groups with operators were extensively studied by Emmy Noether and her school in the 1920s. She empl... | Group with operators | Physics,Mathematics | 596 |
23,982,868 | https://en.wikipedia.org/wiki/Simputer%20General%20Public%20License | The Simputer General Public License, or the SGPL is a hardware distribution public copyright license drafted specifically for the purpose of distributing Simputers. As a license it has been loosely modeled on the GPL but in substance it is very different.
The Simputer specifications are released under the terms and co... | Simputer General Public License | Technology | 274 |
3,487,107 | https://en.wikipedia.org/wiki/Real-time%20polymerase%20chain%20reaction | A real-time polymerase chain reaction (real-time PCR, or qPCR when used quantitatively) is a laboratory technique of molecular biology based on the polymerase chain reaction (PCR). It monitors the amplification of a targeted DNA molecule during the PCR (i.e., in real time), not at its end, as in conventional PCR. Real-... | Real-time polymerase chain reaction | Chemistry,Technology,Biology | 4,443 |
13,483 | https://en.wikipedia.org/wiki/Hemoglobin | Hemoglobin (haemoglobin, Hb or Hgb) is a protein containing iron that facilitates the transportation of oxygen in red blood cells. Almost all vertebrates contain hemoglobin, with the sole exception of the fish family Channichthyidae. Hemoglobin in the blood carries oxygen from the respiratory organs (lungs or gills) to... | Hemoglobin | Chemistry | 11,313 |
241,223 | https://en.wikipedia.org/wiki/Poisson%27s%20ratio | In materials science and solid mechanics, Poisson's ratio (symbol: (nu)) is a measure of the Poisson effect, the deformation (expansion or contraction) of a material in directions perpendicular to the specific direction of loading. The value of Poisson's ratio is the negative of the ratio of transverse strain to axial... | Poisson's ratio | Physics,Materials_science,Mathematics,Engineering | 3,072 |
78,889,296 | https://en.wikipedia.org/wiki/Chuwi | CHUWI (馳為創新科技（深圳）有限公司) is an electronics manufacturer headquartered in Shenzhen, China. The company primarily produces laptops, tablet computers, and mini PCs.
History
CHUWI was established in September 2004 in Shenzhen, China. The company began its operations by offering MP4 products, laying the foundation for its ... | Chuwi | Technology | 726 |
78,251,560 | https://en.wikipedia.org/wiki/Arrhenius%20Plaque | The Arrhenius Plaque (Swedish: Arrhenius-plaketten) is awarded annually by the Swedish Chemical Society in memory of Svante Arrhenius, a Swedish physicist, chemist, and long-time member of the society, "to a person or persons who have distinguished themselves through outstanding research in the field of chemistry or wh... | Arrhenius Plaque | Technology | 183 |
295,446 | https://en.wikipedia.org/wiki/Kumis | Kumis ( , ), alternatively spelled coumis or kumyz, also known as airag ( ), is a traditional fermented dairy product made from mare milk. The drink is important to the peoples of the Central and East Asian steppes, of Turkic and Mongolic origin: Kazakhs, Bashkirs, Kalmyks, Kyrgyz, Mongols, and Yakuts. Kumis was hist... | Kumis | Biology | 1,899 |
19,092,009 | https://en.wikipedia.org/wiki/Duo%20LNB | A Duo LNB is a double low-noise block downconverter (LNB) developed by SES for the simultaneous reception of satellite television signals from both the Astra 23.5°E and Astra 19.2°E satellite positions.
It is a monoblock LNB, which comprises two feedhorns with a single body of electronics containing the LNB stages alo... | Duo LNB | Engineering | 1,580 |
9,510,615 | https://en.wikipedia.org/wiki/Focal%20infection%20theory | Focal infection theory is the historical concept that many chronic diseases, including systemic and common ones, are caused by focal infections. In present medical consensus, a focal infection is a localized infection, often asymptomatic, that causes disease elsewhere in the host, but focal infections are fairly infreq... | Focal infection theory | Environmental_science | 5,437 |
32,897,897 | https://en.wikipedia.org/wiki/Vapreotide | Vapreotide (Sanvar) is a synthetic somatostatin analog. It is used in the treatment of esophageal variceal bleeding in patients with cirrhotic liver disease and AIDS-related diarrhea.
It is an 8 residue peptide with sequence H-D-Phe-Cys(1)-Tyr-D-Trp-Lys-Val-Cys(1)-Trp-NH2.
References
Antineoplastic drugs
Lactams
Pep... | Vapreotide | Chemistry | 113 |
53,724,921 | https://en.wikipedia.org/wiki/Talithia%20Williams | Talithia D. Williams is an American statistician and mathematician at Harvey Mudd College who researches the spatiotemporal structure of data. She was the first black woman to achieve tenure at Harvey Mudd College. Williams is an advocate for engaging more African Americans in engineering and science.
Education
Her ed... | Talithia Williams | Technology | 606 |
21,438,687 | https://en.wikipedia.org/wiki/Drug-induced%20autoimmune%20hemolytic%20anemia | Drug-induced autoimmune hemolytic anemia also known as Drug-induced immune hemolytic anemia (DIIHA) is a rare cause of hemolytic anemia. It is difficult to differentiate from other forms of anemia which can lead to delays in diagnosis and treatment. Many different types of antibiotics can cause DIIHA and discontinuing ... | Drug-induced autoimmune hemolytic anemia | Chemistry | 1,264 |
28,385,525 | https://en.wikipedia.org/wiki/Spare%20part | A spare part, spare, service part, repair part, or replacement part, is an interchangeable part that is kept in an inventory and used for the repair or refurbishment of defective equipment/units. Spare parts are an important feature of logistics engineering and supply chain management, often comprising dedicated spare ... | Spare part | Engineering | 1,790 |
53,399,325 | https://en.wikipedia.org/wiki/Seymour%20Kirkup | Seymour Stocker Kirkup (1788–1880) was an English painter and antiquarian, resident in Italy from 1816.
Life
Born in London, he was the eldest child of Joseph Kirkup, a jeweller and diamond merchant there. He was admitted a student of the Royal Academy in 1809, and obtained a medal in 1811 for a drawing in its antique... | Seymour Kirkup | Engineering | 754 |
58,681,644 | https://en.wikipedia.org/wiki/Johanna%20Stachel | Johanna Barbara Stachel (born 3 December 1954 in Munich) is a German nuclear physicist. She is a professor in experimental physics at the University of Heidelberg (Ruprecht-Karls-Universität Heidelberg). Stachel is a former president of the German Physical Society (DPG).
Early life and education
Johanna Stachel comple... | Johanna Stachel | Physics | 742 |
70,811,442 | https://en.wikipedia.org/wiki/Pauljensenia%20hongkongensis | Pauljensenia hongkongensis is a Gram-positive, strictly anaerobic and non-spore-forming species of bacteria from the family Actinomycetaceae.
References
Actinomycetales
Monotypic bacteria genera
Bacteria described in 2018 | Pauljensenia hongkongensis | Biology | 54 |
43,742,110 | https://en.wikipedia.org/wiki/Baumgartner%27s%20axiom | In mathematical set theory, Baumgartner's axiom (BA) can be one of three different axioms introduced by James Earl Baumgartner.
A subset of the real line is said to be -dense if every two points are separated by exactly other points, where is the smallest uncountable cardinality. This would be true for the real line... | Baumgartner's axiom | Mathematics | 392 |
44,425,089 | https://en.wikipedia.org/wiki/Decision%20Model%20and%20Notation | In business analysis, the Decision Model and Notation (DMN) is a standard published by the Object Management Group. It is a standard approach for describing and modeling repeatable decisions within organizations to ensure that decision models are interchangeable across organizations.
The DMN standard provides the indu... | Decision Model and Notation | Engineering | 2,063 |
29,852,649 | https://en.wikipedia.org/wiki/Stockmayer%20potential | The Stockmayer potential is a mathematical model for representing the interactions between pairs of atoms or molecules. It is defined as a Lennard-Jones potential with a point electric dipole moment.
A Stockmayer liquid consists of a collection of spheres with point dipoles embedded at the centre of each. These sphere... | Stockmayer potential | Physics,Chemistry | 292 |
34,984,725 | https://en.wikipedia.org/wiki/AISoy1 | AISoy1, developed by the Spanish company AISoy Robotics, is a pet-robot considered to be one of the first emotional-learning robots for the consumer market. Its software platform allows it to interpret stimuli from its sensors network, in order to gain information from its environment and take decisions based on logic... | AISoy1 | Technology,Biology | 374 |
11,548,952 | https://en.wikipedia.org/wiki/Censoring%20%28statistics%29 | In statistics, censoring is a condition in which the value of a measurement or observation is only partially known.
For example, suppose a study is conducted to measure the impact of a drug on mortality rate. In such a study, it may be known that an individual's age at death is at least 75 years (but may be more). ... | Censoring (statistics) | Engineering | 1,528 |
60,921,299 | https://en.wikipedia.org/wiki/Hasse%E2%80%93Schmidt%20derivation | In mathematics, a Hasse–Schmidt derivation is an extension of the notion of a derivation. The concept was introduced by .
Definition
For a (not necessarily commutative nor associative) ring B and a B-algebra A, a Hasse–Schmidt derivation is a map of B-algebras
taking values in the ring of formal power series with co... | Hasse–Schmidt derivation | Mathematics | 258 |
36,862,942 | https://en.wikipedia.org/wiki/8%20Vulpeculae | 8 Vulpeculae is star located about 457 light years away in the northern constellation of Vulpecula. It lies just from Alpha Vulpeculae and the two form an optical double. 8 Vulpeculae is visible to the naked eye as a faint, yellow-orange hued star with an apparent visual magnitude of 5.82. It is moving closer to the E... | 8 Vulpeculae | Astronomy | 218 |
37,510,151 | https://en.wikipedia.org/wiki/Beckley%20Furnace%20Industrial%20Monument | The Beckley Furnace Industrial Monument is a state-owned historic site preserving a 19th-century iron-making blast furnace on the north bank of the Blackberry River in the town of North Canaan, Connecticut. The site became a state park in 1946; it was added to the National Register of Historic Places in 1978.
Descrip... | Beckley Furnace Industrial Monument | Engineering | 487 |
31,170,897 | https://en.wikipedia.org/wiki/%22Dixeya%22%20nasuta | "Dixeya" nasuta is an extinct species of gorgonopsian (predatory therapsids, related to modern mammals) that lived during the Late Permian of East Africa, known from fossils found in what is now Tanzania. The species has a complicated taxonomic history, it was originally named as a second species of the genus Dixeya wh... | "Dixeya" nasuta | Biology | 2,747 |
29,202,868 | https://en.wikipedia.org/wiki/Dextran%201 | Dextran 1 is a hapten inhibitor that greatly reduces the risk for anaphylactic reactions when administering dextran.
Mechanism
Dextran 1 is composed of a small fraction (1 kilodalton) of the entire dextran complex. This is enough to bind anti-dextran antibodies but insufficient to result in the formation of immune com... | Dextran 1 | Biology | 133 |
10,225,184 | https://en.wikipedia.org/wiki/Oxygen%20evolution | Oxygen evolution is the chemical process of generating elemental diatomic oxygen (O2) by a chemical reaction, usually from water, the most abundant oxide compound in the universe. Oxygen evolution on Earth is effected by biotic oxygenic photosynthesis, photodissociation, hydroelectrolysis, and thermal decomposition of ... | Oxygen evolution | Chemistry,Biology | 1,174 |
12,604,168 | https://en.wikipedia.org/wiki/Continual%20power%20system | A continual power system is a system for reliably supplying uninterrupted power. Examples of a continual power system include uninterruptible power supplies and emergency power systems. The need for continual power systems has risen because more and more essential services depend on consistent power, such as lighting, ... | Continual power system | Physics,Engineering | 550 |
48,813,282 | https://en.wikipedia.org/wiki/Color%20clock | The color clock, or color timer, is a part of the video circuitry of computer graphics hardware that works with analog color television systems. The clock is timed to match the timing of the color standard it works with, typically NTSC or PAL, ensuring that the data being read from the computer memory to create the ima... | Color clock | Technology | 124 |
23,434,758 | https://en.wikipedia.org/wiki/C9H11NO2 | {{DISPLAYTITLE:C9H11NO2}}
The molecular formula C9H11NO2 (molar mass: 165.18 g/mol, exact mass: 165.078979) may refer to:
Benzocaine
Ethenzamide
Methylenedioxyphenethylamine
Metolcarb
Norsalsolinol
3,4-Methylenedioxy-N-methylbenzylamine, closely related to isosafrole.
Phenylalanine
D-Phenylalanine
References | C9H11NO2 | Chemistry | 116 |
494,745 | https://en.wikipedia.org/wiki/Petrus%20Apianus | Petrus Apianus (April 16, 1495 – April 21, 1552), also known as Peter Apian, Peter Bennewitz, and Peter Bienewitz, was a German humanist, known for his works in mathematics, astronomy and cartography. His work on "cosmography", the field that dealt with the earth and its position in the universe, was presented in his m... | Petrus Apianus | Astronomy | 1,667 |
1,252,438 | https://en.wikipedia.org/wiki/Web%20modeling | Web modeling (aka model-driven Web development) is a branch of Web engineering that addresses the specific issues related to design and development of large-scale Web applications. In particular, it focuses on the design notations and visual languages that can be used for the realization of robust, well-structured, usa... | Web modeling | Engineering | 259 |
3,676,061 | https://en.wikipedia.org/wiki/Inorganic%20Crystal%20Structure%20Database | Inorganic Crystal Structure Database (ICSD) is a chemical database founded in 1978 by Günter Bergerhoff at the University of Bonn in Germany and I. D. Brown at McMaster University in Canada. It is now produced by FIZ Karlsruhe in Europe and the U.S. National Institute of Standards and Technology. It seeks to contain in... | Inorganic Crystal Structure Database | Chemistry,Materials_science | 194 |
604,238 | https://en.wikipedia.org/wiki/Data%20Protection%20Act%201998 | The Data Protection Act 1998 (c. 29) (DPA) was an act of Parliament of the United Kingdom designed to protect personal data stored on computers or in an organised paper filing system. It enacted provisions from the European Union (EU) Data Protection Directive 1995 on the protection, processing, and movement of data.
... | Data Protection Act 1998 | Engineering | 2,463 |
41,442,019 | https://en.wikipedia.org/wiki/Bayesian%20operational%20modal%20analysis | Bayesian operational modal analysis (BAYOMA) adopts a Bayesian system identification approach for operational modal analysis (OMA). Operational modal analysis aims at identifying the modal properties (natural frequencies, damping ratios, mode shapes, etc.) of a constructed structure using only its (output) vibration re... | Bayesian operational modal analysis | Physics | 1,005 |
434,161 | https://en.wikipedia.org/wiki/Nephelinite | Nephelinite is a fine-grained or aphanitic igneous rock made up almost entirely of nepheline and clinopyroxene (variety augite). If olivine is present, the rock may be classified as an olivine nephelinite. Nephelinite is dark in color and may resemble basalt in hand specimen. However, basalt consists mostly of clinopyr... | Nephelinite | Chemistry | 958 |
34,500,414 | https://en.wikipedia.org/wiki/Udacity | Udacity, Inc. is an American for-profit educational organization founded by Sebastian Thrun, David Stavens, and Mike Sokolsky offering massive open online courses.
According to Thrun, the origin of the name Udacity comes from the company's desire to be "audacious for you, the student". While it originally focused on o... | Udacity | Technology | 1,879 |
35,871,521 | https://en.wikipedia.org/wiki/Muselet | A muselet () is a wire cage that fits over the cork of a bottle of champagne, sparkling wine or beer to prevent the cork from emerging under the pressure of the carbonated contents. It derives its name from the French museler, to muzzle. The muselet often has a metal cap incorporated in the design which may show the dr... | Muselet | Physics | 458 |
20,850,247 | https://en.wikipedia.org/wiki/Xie%20Xuejin | Xie Xuejin (; 21 May 1923 – 24 February 2017) was a Chinese geochemist who won the AAG Gold Medal in 2007. Xie was considered as the Father of Geochemical Mapping in China.
Biography
Xie was born 21 May 1923 in Beijing, with his ancestral home in Shanghai. He was the son of the geologist Xie Jiarong. From 1941 to 1945... | Xie Xuejin | Chemistry | 690 |
7,206,776 | https://en.wikipedia.org/wiki/Origanum%20%C3%97%20hybridum | Origanum × hybridum, synonym Origanum × pulchellum, is an ornamental plant of hybrid origin. Its two parents are O. dictamnus and O. sipyleum. It is known as the showy marjoram or the showy oregano.
References
External links
DFT Digital Library - Vascular Plant Images: Origanum pulchellum
hybridum
Hybrid plants | Origanum × hybridum | Biology | 84 |
12,677,802 | https://en.wikipedia.org/wiki/7-cubic%20honeycomb | The 7-cubic honeycomb or hepteractic honeycomb is the only regular space-filling tessellation (or honeycomb) in Euclidean 7-space.
It is analogous to the square tiling of the plane and to the cubic honeycomb of 3-space.
There are many different Wythoff constructions of this honeycomb. The most symmetric form is regul... | 7-cubic honeycomb | Physics,Chemistry,Materials_science | 532 |
27,101,042 | https://en.wikipedia.org/wiki/Asimadoline | Asimadoline (EMD-61753) is an experimental drug which acts as a peripherally selective κ-opioid receptor (KOR) agonist. Because of its low penetration across the blood–brain barrier, asimadoline lacks the psychotomimetic effects of centrally acting KOR agonists, and consequently was thought to have potential for medica... | Asimadoline | Chemistry | 159 |
64,527,214 | https://en.wikipedia.org/wiki/SDC%20335.579-0.292 | SDC 335.579-0.292 is a dark nebula in the constellation of Norma. It is about 7.8 light-years (2.4 parsecs) in size. Its distance is poorly known, but it is thought to be about 10,000 light-years (3.25 kiloparsecs) away.
SDC 335.579-0.292 is a site where stars are forming. It is one of the most massive such star-formi... | SDC 335.579-0.292 | Astronomy | 191 |
57,326,415 | https://en.wikipedia.org/wiki/List%20of%20unsolved%20problems%20in%20astronomy | This article is a list of notable unsolved problems in astronomy. Problems may be theoretical or experimental. Theoretical problems result from inability of current theories to explain observed phenomena or experimental results. Experimental problems result from inability to test or investigate a proposed theory. Other... | List of unsolved problems in astronomy | Physics,Astronomy | 2,402 |
35,566,863 | https://en.wikipedia.org/wiki/Angle-sensitive%20pixel | An angle-sensitive pixel (ASP) is a CMOS sensor with a sensitivity to incoming light that is sinusoidal in incident angle.
Principles of operation
ASPs are typically composed of two gratings (a diffraction grating and an analyzer grating) above a single photodiode. ASPs exploit the moire effect and the Talbot effect ... | Angle-sensitive pixel | Technology,Engineering | 409 |
78,205,092 | https://en.wikipedia.org/wiki/Loewner%20energy | In complex analysis, the Loewner energy is an invariant of a domain in the complex plane, or equivalently an invariant of the boundary of the domain, a simple closed curve.
According to the uniformization theorem, every domain has a conformal mapping to one of three uniform Riemann surfaces: an open unit disk, the com... | Loewner energy | Mathematics | 246 |
2,404,385 | https://en.wikipedia.org/wiki/Friis%20transmission%20equation | The Friis transmission formula is used in telecommunications engineering, equating the power at the terminals of a receive antenna as the product of power density of the incident wave and the effective aperture of the receiving antenna under idealized conditions given another antenna some distance away transmitting a k... | Friis transmission equation | Engineering | 956 |
1,816,147 | https://en.wikipedia.org/wiki/The%20Invisible%20Enemy%20%28Doctor%20Who%29 | The Invisible Enemy is the second serial of the 15th season of the British science fiction television series Doctor Who, which was first broadcast in four weekly parts on BBC1 from 1 to 22 October 1977. The serial introduced the robot dog K9, voiced by John Leeson. In the serial, an intelligent virus intends to spread ... | The Invisible Enemy (Doctor Who) | Physics,Mathematics | 1,424 |
62,877,206 | https://en.wikipedia.org/wiki/Auricular%20splint | An auricular splint (AS) or ear splint is a custom-made medical device that is used to maintain auricular projection and dimensions following second stage auricular reconstruction. The AS is made from ethylene-vinyl acetate (EVA), which is typically used to make custom-made mouthguards and was developed by a team from ... | Auricular splint | Biology | 571 |
26,872,956 | https://en.wikipedia.org/wiki/Trope%20%28mathematics%29 | In geometry, trope is an archaic term for a singular (meaning special) tangent space of a variety, often a quartic surface. The term may have been introduced by , who defined it as "the reciprocal term to node". It is not easy to give a precise definition, because the term is used mainly in older books and papers on al... | Trope (mathematics) | Mathematics | 228 |
4,352,963 | https://en.wikipedia.org/wiki/List%20of%20Balzan%20Prize%20recipients | This is a list of recipients of the Balzan Prize, one of the world's most prestigious academic awards. The International Balzan Prize Foundation awards four annual monetary prizes to people or organizations who have made outstanding achievements in the humanities, natural sciences, culture, and peace on an internationa... | List of Balzan Prize recipients | Technology | 3,154 |
9,423,860 | https://en.wikipedia.org/wiki/Theory-theory | The theory-theory (or theory theory) is a scientific theory relating to the human development of understanding about the outside world. This theory asserts that individuals hold a basic or 'naïve' theory of psychology ("folk psychology") to infer the mental states of others, such as their beliefs, desires or emotions. ... | Theory-theory | Biology | 869 |
578,631 | https://en.wikipedia.org/wiki/High-bandwidth%20Digital%20Content%20Protection | High-bandwidth Digital Content Protection (HDCP) is a form of digital copy protection developed by Intel Corporation to prevent copying of digital audio and video content as it travels across connections. Types of connections include DisplayPort (DP), Digital Visual Interface (DVI), and High-Definition Multimedia Inter... | High-bandwidth Digital Content Protection | Technology | 3,157 |
14,485,522 | https://en.wikipedia.org/wiki/NGC%2087 | NGC 87 is a diffuse, highly disorganized barred irregular galaxy, part of Robert's Quartet, a group of four interacting galaxies.
One supernova has been observed in NGC 87: SN 1994Z (type II, mag. 14.6) was discovered Alexander Wassilieff on 2 October 1994.
See also
Robert's Quartet
List of NGC objects (1–1000)
Re... | NGC 87 | Astronomy | 127 |
69,265,960 | https://en.wikipedia.org/wiki/Ferrari%20Indy%20V8%20engine | Ferrari made a turbocharged, 2.65-liter, V-8, Indy racing engine, dubbed the Tipo 034, designed and purpose-built for competitive use in the CART PPG Indy Car World Series, but, although tested and unveiled to the press in 1986, never raced.
Technical
For an engine that was supposedly only a bargaining tool, the 637 w... | Ferrari Indy V8 engine | Technology | 160 |
15,952,810 | https://en.wikipedia.org/wiki/Inductive%20output%20tube | The inductive output tube (IOT) or klystrode is a variety of linear-beam vacuum tube, similar to a klystron, used as a power amplifier for high frequency radio waves. It evolved in the 1980s to meet increasing efficiency requirements for high-power RF amplifiers in radio transmitters. The primary commercial use of IOT... | Inductive output tube | Physics,Technology | 1,827 |
3,434,894 | https://en.wikipedia.org/wiki/Surface-enhanced%20Raman%20spectroscopy | Surface-enhanced Raman spectroscopy or surface-enhanced Raman scattering (SERS) is a surface-sensitive technique that enhances Raman scattering by molecules adsorbed on rough metal surfaces or by nanostructures such as plasmonic-magnetic silica nanotubes. The enhancement factor can be as much as 1010 to 1011, which mea... | Surface-enhanced Raman spectroscopy | Physics,Chemistry,Materials_science | 2,921 |
77,548,966 | https://en.wikipedia.org/wiki/Aeroflot%20Flight%20F-77 | Aeroflot Flight F-77 was an An-24B operating from Moscow to Bugulma with an intermediate stop in Cheboksary that crashed near Bugulma on 2 March 1986, resulting in the deaths of all 38 occupants on board.
Aircraft
The An-24B with tail number 46423 (serial number 87304108) was manufactured by the Antonov factory on Fe... | Aeroflot Flight F-77 | Technology | 1,848 |
532,123 | https://en.wikipedia.org/wiki/Anti-twister%20mechanism | The anti-twister or antitwister mechanism is a method of connecting a flexible link between two objects, one of which is rotating with respect to the other, in a way that prevents the link from becoming twisted. The link could be an electrical cable or a flexible conduit.
This mechanism is intended as an alternative t... | Anti-twister mechanism | Physics,Technology,Engineering | 385 |
16,697,376 | https://en.wikipedia.org/wiki/Moco%20RNA%20motif | The Moco RNA motif is a conserved RNA structure that is presumed to be a riboswitch that binds molybdenum cofactor or the related tungsten cofactor. Genetic experiments support the hypothesis that the Moco RNA motif corresponds to a genetic control element that responds to changing concentrations of molybdenum or tun... | Moco RNA motif | Chemistry | 150 |
44,585 | https://en.wikipedia.org/wiki/Cyclotron | A cyclotron is a type of particle accelerator invented by Ernest Lawrence in 1929–1930 at the University of California, Berkeley, and patented in 1932. A cyclotron accelerates charged particles outwards from the center of a flat cylindrical vacuum chamber along a spiral path. The particles are held to a spiral trajecto... | Cyclotron | Physics | 5,712 |
8,461,487 | https://en.wikipedia.org/wiki/CCL8 | Chemokine (C-C motif) ligand 8 (CCL8), also known as monocyte chemoattractant protein 2 (MCP2), is a protein that in humans is encoded by the CCL8 gene.
CCL8 is a small cytokine belonging to the CC chemokine family. The CCL8 protein is produced as a precursor containing 109 amino acids, which is cleaved to produce ma... | CCL8 | Chemistry | 370 |
19,217,617 | https://en.wikipedia.org/wiki/Inocybe%20geophylla | Inocybe geophylla, commonly known as the earthy inocybe, common white inocybe or white fibercap, is a poisonous mushroom of the genus Inocybe. It is widespread and common in Europe and North America, appearing under both conifer and deciduous trees in summer and autumn. The fruiting body is a small all-white or cream m... | Inocybe geophylla | Biology,Environmental_science | 1,370 |
67,816,840 | https://en.wikipedia.org/wiki/Mack%20Rides%20BigDipper | BigDipper is a type of steel roller coasters by Mack Rides. Being the first of its kind, the roller coaster Lost Gravity opened at Walibi Holland in March 2016.
Driving system
The trains run on steel rails. The short trains make it possible to drive through very tight curve radii. The roller coasters are basically dr... | Mack Rides BigDipper | Technology | 170 |
36,855,625 | https://en.wikipedia.org/wiki/T%20Cygni | T Cygni is a binary star system in the northern constellation of Cygnus. It is a faint system but visible to the naked eye with a combined apparent visual magnitude of 4.93. Based upon an annual Parallax shift of , it is located 387 light years away. It is moving closer to the Earth with a heliocentric radial velocity ... | T Cygni | Astronomy | 267 |
6,173,472 | https://en.wikipedia.org/wiki/Spatial%20ETL | Spatial extract, transform, load (spatial ETL), also known as geospatial transformation and load (GTL), is a process for managing and manipulating geospatial data, for example map data. It is a type of extract, transform, load (ETL) process, with software tools and libraries specialised for geographical information.
... | Spatial ETL | Technology | 764 |
6,893,752 | https://en.wikipedia.org/wiki/Native%20contact | In protein folding, a native contact is a contact between the side chains of two amino acids that are not neighboring in the amino acid sequence (i.e., they are more than four residues apart in the primary sequence in order to remove trivial i to i+4 contacts along alpha helices) but are spatially close in the protein'... | Native contact | Chemistry,Biology | 171 |
197,213 | https://en.wikipedia.org/wiki/Lead%20styphnate | Lead styphnate (lead 2,4,6-trinitroresorcinate, C6HN3O8Pb ), whose name is derived from styphnic acid, is an explosive used as a component in primer and detonator mixtures for less sensitive secondary explosives. Lead styphnate is only slightly soluble in water and methanol. Samples of lead styphnate vary in color fro... | Lead styphnate | Chemistry | 746 |
42,441,880 | https://en.wikipedia.org/wiki/Advisory%20circular |
Advisory circular (AC) refers to a type of publication offered by the Federal Aviation Administration (FAA) to "provide a single, uniform, agency-wide system … to deliver advisory (non-regulatory) material to the aviation community." Advisory circulars are now harmonized with soft law Acceptable Means of Compliance (A... | Advisory circular | Technology | 600 |
23,128,285 | https://en.wikipedia.org/wiki/Gliese%20752 | Gliese 752 is a binary star system in the Aquila constellation. This system is relatively nearby, at a distance of .
The Gliese 752 system consists of two M-type stars. The primary star is the magnitude 9 Gliese (GJ) 752 A. The secondary star is the dim magnitude 17 Gliese (GJ) 752 B, more commonly referred to as VB 1... | Gliese 752 | Astronomy | 814 |
56,183,086 | https://en.wikipedia.org/wiki/Ivan%20Marusic | Ivan Marusic (born 1965) is an Australian engineer and physicist. He is known for his work on turbulence at high Reynolds number, using both theoretical and experimental approaches.
Marusic was born to Croatian parents in Široki Brijeg in Bosnia and Herzegovina. He emigrated to Australia when he was three years old al... | Ivan Marusic | Chemistry | 266 |
8,736,036 | https://en.wikipedia.org/wiki/Outline%20of%20the%20Internet | The following outline is provided as an overview of and topical guide to the Internet.
The Internet is a worldwide, publicly accessible network of interconnected computer networks that transmit data by packet switching using the standard Internet Protocol (IP). It is a "network of networks" that consists of millions o... | Outline of the Internet | Technology | 1,940 |
31,949,462 | https://en.wikipedia.org/wiki/National%20Institute%20for%20Environmental%20Studies | The National Institute for Environmental Studies (NIES:国立環境研究所, Kokuritsu-Kankyō kenkyūsho) was established in 1974 as a focal point for environmental research in Japan. In 2001 it became an Independent Administrative Institution.
NIES is organised into eight centers, each of which is subdivided into a further number ... | National Institute for Environmental Studies | Environmental_science | 241 |
9,421,904 | https://en.wikipedia.org/wiki/Stream%20thrust%20averaging | In fluid dynamics, stream thrust averaging is a process used to convert three-dimensional flow through a duct into one-dimensional uniform flow. It makes the assumptions that the flow is mixed adiabatically and without friction. However, due to the mixing process, there is a net increase in the entropy of the system.... | Stream thrust averaging | Physics,Chemistry,Engineering | 272 |
4,815,512 | https://en.wikipedia.org/wiki/Toxicity%20class | Toxicity class refers to a classification system for pesticides that has been created by a national or international government-related or -sponsored organization. It addresses the acute toxicity of agents such as soil fumigants, fungicides, herbicides, insecticides, miticides, molluscicides, nematicides, or rodenticid... | Toxicity class | Biology,Environmental_science | 865 |
7,530,642 | https://en.wikipedia.org/wiki/Continuous%20Media%20Markup%20Language | Continuous Media Markup Language (CMML) is to audio or video what HTML is to text. CMML is essentially a timed text codec. It allows file creators to structure a time-continuously sampled data file by dividing it into temporal sections (also called clips), and provides these clips with some additional information. This... | Continuous Media Markup Language | Technology | 356 |
31,276,757 | https://en.wikipedia.org/wiki/Yao%20graph | In computational geometry, the Yao graph, named after Andrew Yao, is a kind of geometric spanner, a weighted undirected graph connecting a set of geometric points with the property that, for every pair of points in the graph, their shortest path has a length that is within a constant factor of their Euclidean distance.... | Yao graph | Mathematics | 237 |
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