id int64 580 79M | url stringlengths 31 175 | text stringlengths 9 245k | source stringlengths 1 109 | categories stringclasses 160
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3,158,873 | https://en.wikipedia.org/wiki/Pothook | A pothook (or pot hook) is an S-shaped metal hook for suspending a pot over a fire.
Usage
While one extremity of the pothook is hooked to the handle of the pot, the other is caught upon an iron crane moving on a pivot over the fire. Later stoves obviated the necessity for this arrangement, but in the early twentieth c... | Pothook | Chemistry | 154 |
1,908,033 | https://en.wikipedia.org/wiki/Bookworm%20%28comics%29 | Bookworm was a British humoristic comic strip, first published on 22 April 1978 in the magazine Whoopee! and survived Whoopee!'''s merger with Whizzer and Chips'' in 1985, becoming a Chip-ite. It was drawn by Sid Burgon for most of its history, although Barry Glennard drew a substantial number of episodes.
Concept
The... | Bookworm (comics) | Biology | 178 |
41,684,133 | https://en.wikipedia.org/wiki/Pi1%20Gruis | {{DISPLAYTITLE:Pi1 Gruis}}
π1 Gruis (Pi1 Gruis) is a semiregular variable star in the constellation Grus around 530 light-years from Earth. It forms a close naked eye double with π2 Gru four arc-minutes away.
π1 Gruis is an asymptotic giant branch (AGB) star of spectral type S5. It is one of the brightest members o... | Pi1 Gruis | Astronomy | 590 |
20,991,984 | https://en.wikipedia.org/wiki/Remote%20racking%20system | A remote racking system or remote racking device is a system that allows an operator racking in and out a withdrawable circuit breaker from a remote location. It offers a safe alternative to manually racking circuit breakers, which reduces the requirement for service personnel to wear a full-body arc flash hazard suit ... | Remote racking system | Physics | 353 |
35,435,442 | https://en.wikipedia.org/wiki/GPCR%20oligomer | A GPCR oligomer is a protein complex that consists of a small number ( oligoi "a few", méros "part, piece, component") of G protein-coupled receptors (GPCRs). It is held together by covalent bonds or by intermolecular forces. The subunits within this complex are called protomers, while unconnected receptors are called... | GPCR oligomer | Chemistry,Biology | 774 |
24,118,534 | https://en.wikipedia.org/wiki/ZooBank | ZooBank is an open access website intended to be the official International Commission on Zoological Nomenclature (ICZN) registry of zoological nomenclature. Any nomenclatural acts (e.g. publications that create or change a taxonomic name) published electronically need to be registered with ZooBank prior to publicatio... | ZooBank | Biology | 569 |
2,468,995 | https://en.wikipedia.org/wiki/Malonyl-CoA | Malonyl-CoA is a coenzyme A derivative of malonic acid.
Functions
It plays a key role in chain elongation in fatty acid biosynthesis and polyketide biosynthesis.
Cytosolic fatty acid biosynthesis
Malonyl-CoA provides 2-carbon units to fatty acids and commits them to fatty acid chain synthesis.
Malonyl-CoA is formed... | Malonyl-CoA | Chemistry,Biology | 576 |
4,641,891 | https://en.wikipedia.org/wiki/Gp41 | Gp41 also known as glycoprotein 41 is a subunit of the envelope protein complex of retroviruses, including human immunodeficiency virus (HIV). Gp41 is a transmembrane protein that contains several sites within its ectodomain that are required for infection of host cells. As a result of its importance in host cell infec... | Gp41 | Chemistry | 1,433 |
32,196,401 | https://en.wikipedia.org/wiki/Integer%20broom%20topology | In general topology, a branch of mathematics, the integer broom topology is an example of a topology on the so-called integer broom space X.
Definition of the integer broom space
The integer broom space X is a subset of the plane R2. Assume that the plane is parametrised by polar coordinates. The integer broom conta... | Integer broom topology | Mathematics | 291 |
51,905,555 | https://en.wikipedia.org/wiki/ProbOnto | ProbOnto is a knowledge base and ontology of probability distributions. ProbOnto 2.5 (released on January 16, 2017) contains over 150 uni- and multivariate distributions and alternative parameterizations, more than 220 relationships and re-parameterization formulas, supporting also the encoding of empirical and univar... | ProbOnto | Mathematics | 1,412 |
663,680 | https://en.wikipedia.org/wiki/Northeast%20%28disambiguation%29 | Northeast is a compass point.
Northeast, north-east, north east, northeastern or north-eastern or north eastern may also refer to:
Northeast (direction), an intercardinal direction
Places
Africa
North East (Nigeria)
North Eastern Province (Kenya)
North-East District (Botswana)
North East Region (Ghana)
North ... | Northeast (disambiguation) | Physics,Mathematics | 727 |
49,223,421 | https://en.wikipedia.org/wiki/Weissman%20score | The Weissman score is a performance metric for lossless compression applications. It was developed by Tsachy Weissman, a professor at Stanford University, and Vinith Misra, a graduate student, at the request of producers for HBO's television series Silicon Valley, a television show about a fictional tech start-up worki... | Weissman score | Mathematics,Technology,Engineering | 387 |
55,823,640 | https://en.wikipedia.org/wiki/Georges%20Tiercy | Georges César Tiercy (1886–1955) was a Swiss astronomer and the 7th director of the Observatoire de Genève from 1928 to 1956.
Tiercy received his bachelor of science degree in 1913 from the University of Paris and his Ph.D. in science and mathematics from the University of Geneva in 1915. He was a master in a private ... | Georges Tiercy | Astronomy | 319 |
18,784,729 | https://en.wikipedia.org/wiki/Natural-language%20programming | Natural-language programming (NLP) is an ontology-assisted way of programming in terms of natural-language sentences, e.g. English. A structured document with Content, sections and subsections for explanations of sentences forms a NLP document, which is actually a computer program. Natural language programming is not t... | Natural-language programming | Technology,Engineering | 1,712 |
10,991,523 | https://en.wikipedia.org/wiki/Total%20human%20ecosystem | Total human ecosystem (THE) is an ecocentric concept initially proposed by ecology professors Zeev Naveh and Arthur S. Lieberman in 1994.
History of the concept
Naveh and Lieberman proposed a holistic, ecocentric concept of the total human ecosystem in order to study anthropocene ecology and improve land use planning... | Total human ecosystem | Biology | 636 |
65,804,540 | https://en.wikipedia.org/wiki/Resin%20transfer%20moulding | Resin transfer moulding (RTM) is a process for producing high performance composite components.
Procedure
It is a process using a rigid two-sided mould set that forms both surfaces of the panel. Usually, the mould is formed from aluminum or steel, but sometimes composite molds are used. The two sides fit together to ... | Resin transfer moulding | Physics | 234 |
17,369,404 | https://en.wikipedia.org/wiki/Transit%20privatization | The privatization of transport refers to the process of shifting responsibility regarding the provision of public transport or service from the public to the private sector.
Introduction
Transit privatization is highly controversial, with proponents claiming great potential benefits and detractors pointing to cases w... | Transit privatization | Physics | 820 |
41,641,823 | https://en.wikipedia.org/wiki/Hydrophobic%20light-activated%20adhesive | Hydrophobic light-activated adhesive (HLAA) is a type of glue that sets in seconds, but only after exposure to ultraviolet light. One biocompatible, biodegradable HLAA is under consideration for use in human tissue repair as a replacement for sutures, staples and other approaches.
History
The glue was developed in a ... | Hydrophobic light-activated adhesive | Physics,Chemistry | 351 |
46,182,552 | https://en.wikipedia.org/wiki/Localization%20and%20Urbanization%20Economies | Localization and Urbanization Economies are two types of external economies of scale, or agglomeration economies. External economies of scale result from an increase in the productivity of an entire industry, region, or economy due to factors outside of an individual company. There are three sources of external economi... | Localization and Urbanization Economies | Engineering | 358 |
5,127,273 | https://en.wikipedia.org/wiki/Lavizan-Shian | Shian is one of the neighborhoods in the northeast of Tehran.
Shiyan neighborhood, which is located in district 4 of Tehran, is located in the north of Loizan Forest Park and south of Aja residential and military complex.
The streets of this neighborhood are named Xian and Xian 1 to 7 respectively. Shi'an neighborhoo... | Lavizan-Shian | Engineering | 317 |
48,944,856 | https://en.wikipedia.org/wiki/Barcelona%20astrolabe | The Barcelona astrolabe is the oldest astrolabe with Carolingian characters that has survived in the Christian Occident.
The French researcher Marcel Destombes founded the astrolabe, and left it as legacy to the Institute of the Arab World of Paris in 1983.
The Academy of Sciences of Barcelona asked the astrolabe in l... | Barcelona astrolabe | Astronomy | 502 |
449,660 | https://en.wikipedia.org/wiki/Cloud%20seeding | [[File:Cloudseedingimagecorrected.jpg|alt=Cloud Seeding|thumb|upright=1.2|This image explaining cloud seeding shows a substance – either silver iodide or dry ice – being dumped onto the cloud, which then becomes a rain shower. The process shown in the upper-right is what is happening in the cloud and the process of con... | Cloud seeding | Engineering | 8,565 |
1,899,230 | https://en.wikipedia.org/wiki/Granulocyte-macrophage%20colony-stimulating%20factor | Granulocyte-macrophage colony-stimulating factor (GM-CSF), also known as colony-stimulating factor 2 (CSF2), is a monomeric glycoprotein secreted by macrophages, T cells, mast cells, natural killer cells, endothelial cells and fibroblasts that functions as a cytokine. The pharmaceutical analogs of naturally occurring G... | Granulocyte-macrophage colony-stimulating factor | Chemistry | 1,280 |
19,357,693 | https://en.wikipedia.org/wiki/Ericsson%20T39 | Ericsson T39 was a GSM mobile phone released by Ericsson Mobile Communications in 2001, it was the follow-up to the T28 and T29.
The prototype, which was unveiled in 2000, was the second phone with built-in Bluetooth, while the first was Ericsson R520M.
Specifications
GSM Tri-band (900/1800/1900)
Form Factor: Flip... | Ericsson T39 | Technology | 203 |
494,669 | https://en.wikipedia.org/wiki/Free%20algebra | In mathematics, especially in the area of abstract algebra known as ring theory, a free algebra is the noncommutative analogue of a polynomial ring since its elements may be described as "polynomials" with non-commuting variables. Likewise, the polynomial ring may be regarded as a free commutative algebra.
Definition
... | Free algebra | Mathematics | 812 |
699,123 | https://en.wikipedia.org/wiki/Marfa%20lights | The Marfa lights, also known as the Marfa ghost lights, are regularly observed near Marfa, Texas, in the United States. They are most often seen from a viewing area nearby, which the community has publicized to encourage tourism. Scientists observing the lights over the period 2000 to 2008 concluded that the lights wer... | Marfa lights | Physics | 1,502 |
423,933 | https://en.wikipedia.org/wiki/Cracking%20%28chemistry%29 | In petrochemistry, petroleum geology and organic chemistry, cracking is the process whereby complex organic molecules such as kerogens or long-chain hydrocarbons are broken down into simpler molecules such as light hydrocarbons, by the breaking of carbon–carbon bonds in the precursors. The rate of cracking and the end ... | Cracking (chemistry) | Chemistry | 3,068 |
41,077 | https://en.wikipedia.org/wiki/Duplexer | A duplexer is an electronic device that allows bi-directional (duplex) communication over a single path. In radar and radio communications systems, it isolates the receiver from the transmitter while permitting them to share a common antenna. Most radio repeater systems include a duplexer. Duplexers can be based on fre... | Duplexer | Engineering | 1,046 |
27,447,887 | https://en.wikipedia.org/wiki/Wood%E2%80%93Armer%20method | The Wood–Armer method is a structural analysis method based on finite element analysis used to design the reinforcement for concrete slabs. This method provides simple equations to design a concrete slab based on the output from a finite element analysis software.
The method was described by engineers Randal Herbert W... | Wood–Armer method | Engineering | 75 |
28,131,864 | https://en.wikipedia.org/wiki/Mobile%20dial%20code | A mobile dial code (MDC) is a grouping of 3 to 10 numbers following either a "#" "##" "*" "**" used to create a short, easy to remember phone number. Historically MDCs were used for repair related purposes by landline and wireless carriers. More recently MDCs have been made available for commercial use. MDCs are dialed... | Mobile dial code | Mathematics | 533 |
5,793,570 | https://en.wikipedia.org/wiki/AP%20Physics%20C%3A%20Electricity%20and%20Magnetism | Advanced Placement (AP) Physics C: Electricity and Magnetism (also known as AP Physics C: E&M or AP E&M) is an introductory physics course administered by the College Board as part of its Advanced Placement program. It is intended to serve as a proxy for a second-semester calculus-based university course in electricity... | AP Physics C: Electricity and Magnetism | Physics | 690 |
73,362,999 | https://en.wikipedia.org/wiki/Y2K%20%282024%20film%29 | Y2K is a 2024 American apocalyptic science fiction comedy horror film directed by Kyle Mooney in his directorial debut, written by Mooney and Evan Winter. It stars Jaeden Martell, Julian Dennison, Rachel Zegler, Daniel Zolghadri, Lachlan Watson, Eduardo Franco, Mason Gooding, Mooney and Fred Durst. It follows a group o... | Y2K (2024 film) | Technology | 1,667 |
1,087,779 | https://en.wikipedia.org/wiki/Period%20%28music%29 | In music theory, the term period refers to forms of repetition and contrast between adjacent small-scale formal structures such as phrases. In twentieth-century music scholarship, the term is usually used similarly to the definition in the Oxford Companion to Music: "a period consists of two phrases, antecedent and con... | Period (music) | Technology | 1,373 |
1,060,279 | https://en.wikipedia.org/wiki/Coping | Coping refers to conscious or unconscious strategies used to reduce and manage unpleasant emotions. Coping strategies can be cognitions or behaviors and can be individual or social. To cope is to deal with struggles and difficulties in life. It is a way for people to maintain their mental and emotional well-being. Ever... | Coping | Biology | 4,701 |
4,302,669 | https://en.wikipedia.org/wiki/Agga%C3%B1%C3%B1a%20Sutta | Aggañña Sutta is the 27th sutta of the Digha Nikaya collection (Pāli version). The sutta describes a discourse imparted by The Buddha to two brahmins, Bharadvaja and Vasettha, who left their family and varna to become monks. The two brahmans are insulted and maligned by their own caste for their intention to become mem... | Aggañña Sutta | Astronomy | 4,599 |
1,267,413 | https://en.wikipedia.org/wiki/John%20A.%20Davis | John Alexander Davis (born October 26, 1961) is an American film director, writer, animator, voice actor and composer known for his work both in stop-motion animation as well as computer animation, live action and live-action/CGI hybrids. Davis is best known for creating Nickelodeon's Jimmy Neutron franchise, which enj... | John A. Davis | Astronomy | 738 |
29,118,936 | https://en.wikipedia.org/wiki/Variable%20pathlength%20cell | A variable pathlength cell is a sample holder used for ultraviolet–visible spectroscopy or infrared spectroscopy that has a path length that can be varied to change the absorbance without changing the sample concentration.
Equations
The Beer–Lambert law states that there is a logarithmic dependence between the transm... | Variable pathlength cell | Physics,Chemistry | 902 |
15,906,222 | https://en.wikipedia.org/wiki/Cyril%20Callister | Cyril Percy Callister (16 February 1893 – 5 October 1949) was an Australian chemist and food technologist who developed the Vegemite yeast spread. As well as Vegemite, he is known for his contributions towards processed cheese.
Early life
Callister was born on 16 February 1893, in Chute, Victoria near Ballarat, son ... | Cyril Callister | Chemistry | 696 |
6,317,367 | https://en.wikipedia.org/wiki/214%20%28number%29 | 214 (two hundred [and] fourteen) is the natural number following 213 and preceding 215.
In mathematics
214 is a composite number (with prime factorization 2 × 107) and a triacontakaiheptagonal number (37-gonal number).
214!! − 1 is a 205-digit prime number.
Number of regions into which a figure made up of a row of 5 a... | 214 (number) | Mathematics | 146 |
4,534,426 | https://en.wikipedia.org/wiki/Leaky%20integrator | In mathematics, a leaky integrator equation is a specific differential equation, used to describe a component or system that takes the integral of an input, but gradually leaks a small amount of input over time. It appears commonly in hydraulics, electronics, and neuroscience where it can represent either a single neu... | Leaky integrator | Mathematics | 129 |
47,902,485 | https://en.wikipedia.org/wiki/New%20media%20studies | New media studies is an academic discipline that explores the intersections of computing, science, the humanities, and the visual and performing arts. Janet Murray, a prominent researcher in the discipline, describes this intersection as "a single new medium of representation, the digital medium, formed by the braided ... | New media studies | Biology | 1,442 |
74,331 | https://en.wikipedia.org/wiki/Andromeda%20Galaxy | The Andromeda Galaxy is a barred spiral galaxy and is the nearest major galaxy to the Milky Way. It was originally named the Andromeda Nebula and is cataloged as Messier 31, M31, and NGC 224. Andromeda has a D25 isophotal diameter of about and is approximately from Earth. The galaxy's name stems from the area of Eart... | Andromeda Galaxy | Astronomy | 7,004 |
3,281,166 | https://en.wikipedia.org/wiki/Thermodynamic%20process | Classical thermodynamics considers three main kinds of thermodynamic processes: (1) changes in a system, (2) cycles in a system, and (3) flow processes.
(1) A Thermodynamic process is a process in which the thermodynamic state of a system is changed. A change in a system is defined by a passage from an initial to a f... | Thermodynamic process | Physics,Chemistry,Mathematics | 2,840 |
33,351,217 | https://en.wikipedia.org/wiki/My%20Wife%20and%20My%20Mother-in-Law | "My Wife and My Mother-in-Law" is a famous ambiguous image, which can be perceived either as a young woman or an old woman (the "wife" and the "mother-in-law", respectively). The young woman appears with her face turned away from the viewer while the old woman appears in profile, so the part of the drawing that represe... | My Wife and My Mother-in-Law | Physics | 267 |
7,987,653 | https://en.wikipedia.org/wiki/Koszul%20algebra | In abstract algebra, a Koszul algebra is a graded -algebra over which the ground field has a linear minimal graded free resolution, i.e., there exists an exact sequence:
for some nonnegative integers . Here is the graded algebra with grading shifted up by , i.e. , and the exponent refers to the -fold direct s... | Koszul algebra | Mathematics | 195 |
57,152,266 | https://en.wikipedia.org/wiki/Neoclassical%20transport | In plasma physics and magnetic confinement fusion, neoclassical transport or neoclassical diffusion is a theoretical description of collisional transport in toroidal plasmas, usually found in tokamaks or stellarators. It is a modification of classical diffusion adding in effects of non-uniform magnetic fields due to th... | Neoclassical transport | Physics,Chemistry,Engineering | 995 |
2,259,059 | https://en.wikipedia.org/wiki/Chronometry | Chronometry or horology () is the science studying the measurement of time and timekeeping. Chronometry enables the establishment of standard measurements of time, which have applications in a broad range of social and scientific areas. Horology usually refers specifically to the study of mechanical timekeeping device... | Chronometry | Physics,Mathematics | 3,318 |
4,566,568 | https://en.wikipedia.org/wiki/Tameness%20theorem | In mathematics, the tameness theorem states that every complete hyperbolic 3-manifold with finitely generated fundamental group is topologically tame, in other words homeomorphic to the interior of a compact 3-manifold.
The tameness theorem was conjectured by . It was proved by and, independently, by Danny Calegari a... | Tameness theorem | Mathematics | 442 |
24,509,229 | https://en.wikipedia.org/wiki/Gymnopilus%20noviholocirrhus | Gymnopilus noviholocirrhus is a species of mushroom in the family Hymenogastraceae. This species is known only from one locality, on the island of Hahajima, growing on the species Celtis boninensis. It is thought to be extinct.
See also
List of Gymnopilus species
References
External links
Gymnopilus noviholocirrhu... | Gymnopilus noviholocirrhus | Biology | 101 |
5,612,520 | https://en.wikipedia.org/wiki/Eduardo%20D.%20Sontag | Eduardo Daniel Sontag (born April 16, 1951, in Buenos Aires, Argentina) is an Argentine-American mathematician, and distinguished university professor at Northeastern University, who works in the fields control theory, dynamical systems, systems molecular biology, cancer and immunology, theoretical computer science, ne... | Eduardo D. Sontag | Engineering | 1,133 |
2,137,828 | https://en.wikipedia.org/wiki/Cold%20inflation%20pressure | Cold inflation pressure is the inflation pressure of tires as measured before a car is driven and the tires warmed up. Recommended cold inflation pressure is displayed in the owner's manual and on the Tire Information Placard attached to the vehicle door edge, pillar, glovebox door or fuel filler flap.
Cold inflation... | Cold inflation pressure | Physics | 565 |
1,068,768 | https://en.wikipedia.org/wiki/Phytoremediation | Phytoremediation technologies use living plants to clean up soil, air and water contaminated with hazardous contaminants. It is defined as "the use of green plants and the associated microorganisms, along with proper soil amendments and agronomic techniques to either contain, remove or render toxic environmental conta... | Phytoremediation | Chemistry,Engineering,Biology,Environmental_science | 4,323 |
47,688,731 | https://en.wikipedia.org/wiki/Electromembrane%20extraction | Electro membrane extraction, or EME, is a miniaturized liquid-liquid extraction technique developed for sample preparation of aqueous samples prior to analysis by chromatography, electrophoresis, mass spectrometry, and related techniques in analytical chemistry. EME involves the use of a small supported liquid membrane... | Electromembrane extraction | Chemistry | 397 |
25,682,562 | https://en.wikipedia.org/wiki/Morris%20J.%20Berman%20oil%20spill | The Morris J. Berman oil spill occurred on January 7, 1994, when the Morris J. Berman, a single-hull 302-foot-long barge, with the capacity to carry more than 3 million gallons of oil, collided with a coral reef near San Juan, Puerto Rico, causing the release of 750,000 gallons of heavy grade oil. The spill affected th... | Morris J. Berman oil spill | Chemistry | 3,095 |
5,712,360 | https://en.wikipedia.org/wiki/2-Phosphoglyceric%20acid | 2-Phosphoglyceric acid (2PG), or 2-phosphoglycerate, is a glyceric acid which serves as the substrate in the ninth step of glycolysis. It is catalyzed by enolase into phosphoenolpyruvate (PEP), the penultimate step in the conversion of glucose to pyruvate.
In glycolysis
See also
3-Phosphoglyceric acid
References
O... | 2-Phosphoglyceric acid | Chemistry,Biology | 114 |
698,010 | https://en.wikipedia.org/wiki/Smash%20product | In topology, a branch of mathematics, the smash product of two pointed spaces (i.e. topological spaces with distinguished basepoints) and is the quotient of the product space under the identifications for all in and in . The smash product is itself a pointed space, with basepoint being the equivalence class of ... | Smash product | Physics,Mathematics | 745 |
63,553,875 | https://en.wikipedia.org/wiki/List%20of%20unproven%20methods%20against%20COVID-19 | There are many fake or unproven medical products and methods that claim to diagnose, prevent or cure COVID-19. Fake medicines sold for COVID-19 may not contain the ingredients they claim to contain, and may even contain harmful ingredients. In March 2020, the World Health Organization (WHO) released a statement recomme... | List of unproven methods against COVID-19 | Technology | 7,529 |
2,777,137 | https://en.wikipedia.org/wiki/Keynesian%20beauty%20contest | A Keynesian beauty contest describes a beauty contest where judges are rewarded for selecting the most popular faces among all judges, rather than those they may personally find the most attractive. This idea is often applied in financial markets, whereby investors could profit more by buying whichever stocks they thin... | Keynesian beauty contest | Mathematics,Biology | 708 |
41,390,796 | https://en.wikipedia.org/wiki/Galileo%20%281968%20film%29 | Galileo (also known as Galileo Galilei) is a 1968 Italian–Bulgarian biographical drama film directed by Liliana Cavani. It depicts the life of Galileo Galilei and particularly his conflicts with the Catholic Church over his scientific theories.
Plot
Astronomer Galileo Galilei teaches at the University of Padua. While ... | Galileo (1968 film) | Astronomy | 498 |
33,160,265 | https://en.wikipedia.org/wiki/Vinylphenol%20reductase | Vinylphenol reductase is an enzyme that catalyses the reaction :
4-vinylphenol + NAD+ + 3 H+ ⇔ 4-ethylphenol + NADH
It is found in Brettanomyces bruxellensis, a yeast responsible of the presence of ethyl phenols in wine formed from p-coumaric acid.
See also
Wine chemistry
Yeast in winemaking
References
External... | Vinylphenol reductase | Chemistry | 107 |
308,158 | https://en.wikipedia.org/wiki/Vacuum%20energy | Vacuum energy is an underlying background energy that exists in space throughout the entire universe. The vacuum energy is a special case of zero-point energy that relates to the quantum vacuum.
The effects of vacuum energy can be experimentally observed in various phenomena such as spontaneous emission, the Casimir e... | Vacuum energy | Physics,Astronomy,Mathematics | 2,029 |
6,905,141 | https://en.wikipedia.org/wiki/Spur%20%28botany%29 | The botanical term “spur” is given to outgrowths of tissue on different plant organs. The most common usage of the term in botany refers to nectar spurs in flowers.
nectar spur
spur (stem)
spur (leaf)
See also
Fascicle
Sepal
Petal
Tepal
Calyx
Corolla
Plant anatomy
Plant morphology | Spur (botany) | Biology | 67 |
57,236,131 | https://en.wikipedia.org/wiki/Grimpoteuthis%20abyssicola | Grimpoteuthis abyssicola, commonly known as the red jellyhead, is a species of small deep-sea octopus known from two specimens. The holotype specimen was a female collected on the Lord Howe Rise (central Tasman Sea off New Zealand), between 3154 and 3180 meters depth. A second specimen (a male) was collected on the con... | Grimpoteuthis abyssicola | Biology | 459 |
4,289,748 | https://en.wikipedia.org/wiki/Susan%20Headley | Susan Headley (born 1959, also known as Susy Thunder or Susan Thunder) is an American former phreaker and early computer hacker during the late 1970s and early 1980s. A member of the so-called Cyberpunks, Headley specialized in social engineering, a type of hacking which uses pretexting and misrepresentation of oneself... | Susan Headley | Technology | 400 |
238,517 | https://en.wikipedia.org/wiki/Kip%20Thorne | Kip Stephen Thorne (born June 1, 1940) is an American theoretical physicist and writer known for his contributions in gravitational physics and astrophysics. Along with Rainer Weiss and Barry C. Barish, he was awarded the 2017 Nobel Prize in Physics for his contributions to the LIGO detector and the observation of grav... | Kip Thorne | Physics,Astronomy | 3,548 |
13,798,040 | https://en.wikipedia.org/wiki/Field%20with%20one%20element | In mathematics, the field with one element is a suggestive name for an object that should behave similarly to a finite field with a single element, if such a field could exist. This object is denoted F1, or, in a French–English pun, Fun. The name "field with one element" and the notation F1 are only suggestive, as ther... | Field with one element | Mathematics | 3,631 |
4,679,870 | https://en.wikipedia.org/wiki/British%20National%20Committee%20for%20Space%20Research | The British National Committee for Space Research (BNCSR) was a Royal Society committee formed in December 1958. It was formed primarily to be Britain's interface with the newly formed Committee on Space Research (COSPAR).
History
In October 1958, the International Council of Scientific Unions (ICSU) proposed to form ... | British National Committee for Space Research | Astronomy | 417 |
3,682,781 | https://en.wikipedia.org/wiki/Seam%20sealant | Seam sealants are chemical coating compositions.
Textiles
Seam sealants are applied to waterproof seams of items such as rainwear, tents, backpacks, shoes, drysacks, and drysuits. They are often applied by the consumer post-purchase.
Automotive industry
Seam sealing was already performed manually successfully for pre... | Seam sealant | Physics | 382 |
46,936,167 | https://en.wikipedia.org/wiki/Dehydronorketamine | Dehydronorketamine (DHNK), or 5,6-dehydronorketamine, is a minor metabolite of ketamine which is formed by dehydrogenation of its metabolite norketamine. Though originally considered to be inactive, DHNK has been found to act as a potent and selective negative allosteric modulator of the α7-nicotinic acetylcholine rece... | Dehydronorketamine | Chemistry | 322 |
6,874,521 | https://en.wikipedia.org/wiki/Equating%20coefficients | In mathematics, the method of equating the coefficients is a way of solving a functional equation of two expressions such as polynomials for a number of unknown parameters. It relies on the fact that two expressions are identical precisely when corresponding coefficients are equal for each different type of term. The ... | Equating coefficients | Mathematics | 807 |
56,075,256 | https://en.wikipedia.org/wiki/Graph-encoded%20map | In topological graph theory, a graph-encoded map or gem is a method of encoding a cellular embedding of a graph using a different graph with four vertices per edge of the original graph. It is the topological analogue of runcination, a geometric operation on polyhedra. Graph-encoded maps were formulated and named by .
... | Graph-encoded map | Mathematics | 548 |
4,135,937 | https://en.wikipedia.org/wiki/In-vessel%20composting | In-vessel composting generally describes a group of methods that confine the composting materials within a building, container, or vessel. In-vessel composting systems can consist of metal or plastic tanks or concrete bunkers in which air flow and temperature can be controlled, using the principles of a "bioreactor". ... | In-vessel composting | Chemistry,Engineering | 575 |
18,321,202 | https://en.wikipedia.org/wiki/Cyprodime | Cyprodime is an opioid antagonist from the morphinan family of drugs.
Cyprodime is a selective opioid antagonist which blocks the μ-opioid receptor, but without affecting the δ-opioid or κ-opioid receptors. This makes it useful for scientific research as it allows the μ-opioid receptor to be selectively deactivated so... | Cyprodime | Chemistry | 198 |
49,280,110 | https://en.wikipedia.org/wiki/Frost%20damage%20%28construction%29 | Frost damage is caused by moisture freezing in the construction. Frost damage can occur as cracks, stone splinters and swelling of the material.
When water freezes, the volume of water increases by 9 %. When the volumetric moisture content exceeds 91 %, then the volume increase of water in the pores of the material ca... | Frost damage (construction) | Engineering | 388 |
24,415,026 | https://en.wikipedia.org/wiki/Hopkinson%20and%20Imperial%20Chemical%20Industries%20Professor%20of%20Applied%20Thermodynamics | The Hopkinson and Imperial Chemical Industries Professorship of Applied Thermodynamics at the University of Cambridge was established on 10 February 1950, largely from the endowment fund of the proposed Hopkinson Professorship in Thermodynamics and a gift from ICI Limited of £50,000, less tax, spread over the seven yea... | Hopkinson and Imperial Chemical Industries Professor of Applied Thermodynamics | Physics,Chemistry | 225 |
51,295,111 | https://en.wikipedia.org/wiki/Schema-agnostic%20databases | Schema-agnostic databases or vocabulary-independent databases aim at supporting users to be abstracted from the representation of the data, supporting the automatic semantic matching between queries and databases. Schema-agnosticism is the property of a database of mapping a query issued with the user terminology and s... | Schema-agnostic databases | Technology | 1,358 |
9,132,604 | https://en.wikipedia.org/wiki/Eli%20Lilly%20%26%20Co.%20v.%20Medtronic%2C%20Inc. | Eli Lilly and Company v. Medtronic, Inc., 496 U.S. 661 (1990), is a United States Supreme Court case related to patent infringement in the medical device industry. It held that (e)(1) of United States patent law exempted premarketing activity conducted to gain approval of a device under the Federal Food, Drug, and Cos... | Eli Lilly & Co. v. Medtronic, Inc. | Biology | 171 |
71,674,924 | https://en.wikipedia.org/wiki/Albert%20M.%20Gessler | Albert M. Gessler (191918 May 2003) was an ExxonMobil research chemist known for the development of elastomeric thermoplastics.
Personal
Gessler was a resident of Cranford, New Jersey for 58 years. He was active in civic life, founding Cranford's recycling program in 1971. He worked to establish Cranford's Conservati... | Albert M. Gessler | Chemistry,Materials_science | 339 |
1,731,024 | https://en.wikipedia.org/wiki/Tetrahedral%20carbonyl%20addition%20compound | A tetrahedral intermediate is a reaction intermediate in which the bond arrangement around an initially double-bonded carbon atom has been transformed from trigonal to tetrahedral. Tetrahedral intermediates result from nucleophilic addition to a carbonyl group. The stability of tetrahedral intermediate depends on the ... | Tetrahedral carbonyl addition compound | Chemistry | 2,664 |
3,048,850 | https://en.wikipedia.org/wiki/Sodium%20trimetaphosphate | Sodium trimetaphosphate (also STMP), with formula Na3P3O9, is one of the metaphosphates of sodium. It has the formula but the hexahydrate is also well known. It is the sodium salt of trimetaphosphoric acid. It is a colourless solid that finds specialised applications in food and construction industries.
Although dr... | Sodium trimetaphosphate | Chemistry | 275 |
3,012,448 | https://en.wikipedia.org/wiki/Nitrogen%20balance | In human physiology, nitrogen balance is the net difference between bodily nitrogen intake (ingestion) and loss (excretion). It can be represented as the following:
Nitrogen is a fundamental chemical component of amino acids, the molecular building blocks of protein. As such, nitrogen balance may be used as an index o... | Nitrogen balance | Chemistry | 467 |
32,174,433 | https://en.wikipedia.org/wiki/Akira%20Fujii | was a Japanese astrophotographer and astronomer. PBS has described him as "the world's foremost wide-angle astrophotographer".
Fujii graduated from Tama Art University in 1961, and began working at observatories, producing a substantial bibliography of general-audience astronomy books. In 1974, Fujii began Japan's fir... | Akira Fujii | Astronomy | 221 |
36,100,009 | https://en.wikipedia.org/wiki/Shove%20knife | A shove knife is a forcible entry tool used mainly by firefighters. Generally, they consist of a small, semi-rigid piece of 10 gauge steel with an indented end. The device is inserted between a door and the door frame, above the spring latch on outwardly-swinging doors equipped with key-in-the-knob locks. The tool is ... | Shove knife | Engineering | 91 |
62,720,164 | https://en.wikipedia.org/wiki/Hard%20carbon | Hard carbon is a solid form of carbon that cannot be converted to graphite by heat-treatment, even at temperatures as high as 3000 °C. It is also known as char, or non-graphitizing carbon. More colloquially it can be described as charcoal.
Hard carbon is produced by heating carbonaceous precursors to approximately 100... | Hard carbon | Chemistry | 279 |
992,626 | https://en.wikipedia.org/wiki/NGC%20891 | NGC 891 (also known as Caldwell 23, the Silver Sliver Galaxy, and the Outer Limits Galaxy) is an edge-on unbarred spiral galaxy about 30 million light-years away in the constellation Andromeda. It was discovered by William Herschel on October 6, 1784. The galaxy is a member of the NGC 1023 group of galaxies in the Loca... | NGC 891 | Astronomy | 779 |
77,814,460 | https://en.wikipedia.org/wiki/List%20of%20Oceanian%20regions%20by%20life%20expectancy | This is a list of Oceanian regions according to estimation of the Global Data Lab, as of 15 October 2024. By default, regions within country are sorted by overall life expectancy in 2022. Countries are sorted by the most favorable for life expectancy region inside them.
See also
References
Life expectancy
Oceania | List of Oceanian regions by life expectancy | Biology | 65 |
574,544 | https://en.wikipedia.org/wiki/Circular%20motion | In physics, circular motion is movement of an object along the circumference of a circle or rotation along a circular arc. It can be uniform, with a constant rate of rotation and constant tangential speed, or non-uniform with a changing rate of rotation. The rotation around a fixed axis of a three-dimensional body invo... | Circular motion | Physics,Mathematics | 2,834 |
23,956,192 | https://en.wikipedia.org/wiki/Green%20Archer%20%28radar%29 | Green Archer, also called Radar, Field Artillery, No 8 was a widely used British mortar locating radar operating in the X band using a Foster scanner. Developed by EMI after an experimental model by the Royal Radar Establishment, it was in British service from 1962 until 1975 with the Royal Artillery. A self-propelled... | Green Archer (radar) | Technology | 1,324 |
21,946 | https://en.wikipedia.org/wiki/Nutcracker | A nutcracker is a tool designed to open nuts by cracking their shells. There are many designs, including levers, screws, and ratchets. The lever version is also used for cracking lobster and crab shells.
A decorative version, a nutcracker doll, portrays a person whose mouth forms the jaws of the nutcracker.
Functions... | Nutcracker | Physics | 1,479 |
28,400,431 | https://en.wikipedia.org/wiki/V%20Cephei | V Cephei is a white main sequence star in the constellation Cepheus. It only varies slightly by 0.03 of a magnitude. It was suspected of being variable by American astronomer Seth Carlo Chandler noting in 1890 that it varied by 0.7 magnitude but that it needed more confirmation. Subsequent observers were divided in whe... | V Cephei | Astronomy | 161 |
944,335 | https://en.wikipedia.org/wiki/Muscazone | Muscazone is a toxic chemical compound. It is an amino acid found in European fly agaric mushrooms.
Consumption causes visual damage, mental confusion, and memory loss.
See also
Ibotenic acid
Muscimol
References
Alpha-Amino acids
Mycotoxins
Oxazolones
Toxic amino acids | Muscazone | Chemistry | 63 |
34,436,247 | https://en.wikipedia.org/wiki/Dry%20gallon | The dry gallon, also known as the corn gallon or grain gallon, is a historic British dry measure of volume that was used to measure grain and other dry commodities and whose earliest recorded official definition, in 1303, was the volume of of wheat. It is not used in the US customary system – though it implicitly exis... | Dry gallon | Mathematics | 244 |
10,465,001 | https://en.wikipedia.org/wiki/Eigenvalue%20perturbation | In mathematics, an eigenvalue perturbation problem is that of finding the eigenvectors and eigenvalues of a system that is perturbed from one with known eigenvectors and eigenvalues . This is useful for studying how sensitive the original system's eigenvectors and eigenvalues are to changes in the system.
This type... | Eigenvalue perturbation | Physics,Mathematics | 2,239 |
49,296,992 | https://en.wikipedia.org/wiki/Medicines%20reconciliation | Medicines reconciliation or medication reconciliation is the process of ensuring that a hospital patient's medication list is as up-to-date as possible. It is usually undertaken by a pharmacist and may include consulting several sources such as the patient, their relatives or caregivers, or their primary care physician... | Medicines reconciliation | Chemistry | 398 |
92,377 | https://en.wikipedia.org/wiki/Electromagnet | An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. Electromagnets usually consist of wire wound into a coil. A current through the wire creates a magnetic field which is concentrated along the center of the coil. The magnetic field disappears when the current is turned ... | Electromagnet | Physics | 5,777 |
12,868,737 | https://en.wikipedia.org/wiki/Calvera%20%28X-ray%20source%29 | In astronomy, Calvera (also known as 1RXS J141256.0+792204) is an X-ray source in the constellation Ursa Minor, identified in 2007 as an isolated neutron star. It is one of the hottest and closest of its kind to Earth.
It is named after the villain in the 1960 film The Magnificent Seven, as it is the eighth such n... | Calvera (X-ray source) | Astronomy | 168 |
23,889,683 | https://en.wikipedia.org/wiki/Sulfolipid | Sulfolipids are a class of lipids which possess a sulfur-containing functional group. An abundant sulfolipid is sulfoquinovosyl diacylglycerol, which is composed of a glycoside of sulfoquinovose and diacylglycerol. In plants, sulfoquinovosyl diacylglycerides (SQDG) are important members of the sulfur cycle. Other imp... | Sulfolipid | Chemistry,Biology | 198 |
6,197,802 | https://en.wikipedia.org/wiki/ISO%2031-10 | ISO 31-10 is the part of international standard ISO 31 that defines names and symbols for quantities and units related to nuclear reactions and ionizing radiations. It gives names and symbols for 70 quantities and units. Where appropriate, conversion factors are also given. The standard was withdrawn in 2009 and replac... | ISO 31-10 | Physics,Chemistry,Mathematics | 103 |
69,447,725 | https://en.wikipedia.org/wiki/Inner%20Team | The inner team is a personality model created by German psychologist Friedemann Schulz von Thun. The plurality of the human inner life or facets of the personality (Self) is presented using a metaphor of a team and a team leader. This is supposed to support the self-clarification process and by doing so set the foundat... | Inner Team | Biology | 1,010 |
32,610,132 | https://en.wikipedia.org/wiki/Linifanib | Linifanib (ABT-869) is a structurally novel, potent inhibitor of receptor tyrosine kinases (RTK), vascular endothelial growth factor (VEGF) and platelet-derived growth factor (PDGF) with IC50 of 0.2, 2, 4, and 7 nM for human endothelial cells, PDGF receptor beta (PDGFR-β), KDR, and colony stimulating factor 1 receptor ... | Linifanib | Chemistry | 259 |
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