id int64 580 79M | url stringlengths 31 175 | text stringlengths 9 245k | source stringlengths 1 109 | categories stringclasses 160
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|---|---|---|---|---|---|
50,602,087 | https://en.wikipedia.org/wiki/Adiabatic%20MRI%20Pulses | Adiabatic radio frequency (RF) pulses are used in magnetic resonance imaging (MRI) to achieve excitation that is insensitive to spatial inhomogeneities in the excitation field or off-resonances in the sampled object.
Nuclear magnetic resonance (NMR) experiments are often performed with surface transceiver coils that h... | Adiabatic MRI Pulses | Chemistry | 2,867 |
22,449,897 | https://en.wikipedia.org/wiki/Tulosesus%20heterosetulosus | Tulosesus heterosetulosus is a species of mushroom producing fungus in the family Psathyrellaceae.
Taxonomy
It was first classified as Coprinus heterosetulosus by the French mycologist Marcel Locquin in 1947.
In 2001 a phylogenetic study resulted in a major reorganization and reshuffling of that genus and this speci... | Tulosesus heterosetulosus | Biology | 164 |
15,718,248 | https://en.wikipedia.org/wiki/Conference%20on%20Implementation%20and%20Application%20of%20Automata | CIAA, the International Conference on Implementation and Application of Automata is an annual academic conference in the field of computer science.
Its purpose is to bring together members of the academic, research, and industrial community who have an interest in the theory, implementation, and application of automat... | Conference on Implementation and Application of Automata | Mathematics,Technology | 364 |
26,128,168 | https://en.wikipedia.org/wiki/Dharni%20%28unit%29 | The dharni () is a still used ancient unit of mass, used in Nepal, of about seer. It was divided into 2 bisauli (बिसौलि), 4 boṛi (बोड़ि), or 12 pāu (पाउ). The United Nations Statistical Office gave an approximate equivalence of 2.3325 kilograms (5.142 pounds avoirdupois) in 1966.
References
External links
Sizes.com
... | Dharni (unit) | Physics,Mathematics | 103 |
31,093,358 | https://en.wikipedia.org/wiki/Linnean%20Tercentenary%20Medal | The Linnean Tercentenary Medal was commissioned in 2007 by the Linnean Society to commemorate the tercentenary of the birth of Carl Linnaeus. Recipients were in two categories: Silver Medal and Bronze Medal, for outstanding contributions to natural history.
The front of the medal features an illustration by Linnaeus o... | Linnean Tercentenary Medal | Technology | 219 |
37,926,134 | https://en.wikipedia.org/wiki/Fish%20gill | Fish gills are organs that allow fish to breathe underwater. Most fish exchange gases like oxygen and carbon dioxide using gills that are protected under gill covers (operculum) on both sides of the pharynx (throat). Gills are tissues that are like short threads, protein structures called filaments. These filaments hav... | Fish gill | Biology | 2,565 |
213,070 | https://en.wikipedia.org/wiki/Artificial%20insemination | Artificial insemination is the deliberate introduction of sperm into a female's cervix or uterine cavity for the purpose of achieving a pregnancy through in vivo fertilization by means other than sexual intercourse. It is a fertility treatment for humans, and is a common practice in animal breeding, including dairy cat... | Artificial insemination | Physics,Chemistry,Biology | 9,459 |
13,203,980 | https://en.wikipedia.org/wiki/Hull%20classification%20symbol%20%28Canada%29 | The Royal Canadian Navy uses hull classification symbols to identify the types of its ships, which are similar to the United States Navy's hull classification symbol system. The Royal Navy and some European and Commonwealth navies (19 in total) use a somewhat analogous system of pennant numbers.
In a ship name such as... | Hull classification symbol (Canada) | Mathematics | 881 |
314,366 | https://en.wikipedia.org/wiki/H-infinity%20methods%20in%20control%20theory | H∞ (i.e. "H-infinity") methods are used in control theory to synthesize controllers to achieve stabilization with guaranteed performance. To use H∞ methods, a control designer expresses the control problem as a mathematical optimization problem and then finds the controller that solves this optimization. H∞ technique... | H-infinity methods in control theory | Mathematics | 886 |
56,138,626 | https://en.wikipedia.org/wiki/Nut%20shell%20filter | A nut shell filter is a device to remove oil from water. In the oil and gas industry, the term walnut shell filter is common since black walnuts are most often used. Typically nut shell filters are designed for loadings under 100 mg/L oil and 100 mg/L suspended solids and operate with 90–95% removal efficiency. High oi... | Nut shell filter | Chemistry,Engineering | 637 |
76,824,481 | https://en.wikipedia.org/wiki/74%20Geminorum | 74 Geminorum (f Geminorum) is a K-type giant star in the constellation Gemini. It is located about 640 light-years from Earth based on its Gaia DR3 parallax. The star is often subject to lunar occultations, allowing an accurate measurement of its angular diameter. It has an apparent magnitude of 5.05, making it faintly... | 74 Geminorum | Astronomy | 435 |
11,128,261 | https://en.wikipedia.org/wiki/Phyllosticta%20coffeicola | Phyllosticta coffeicola is a fungal plant pathogen infecting coffee.
References
External links
USDA ARS Fungal Database
Fungal plant pathogens and diseases
Coffee diseases
coffeicola
Fungi described in 1896
Fungus species | Phyllosticta coffeicola | Biology | 47 |
49,905,706 | https://en.wikipedia.org/wiki/Moduli%20stack%20of%20elliptic%20curves | In mathematics, the moduli stack of elliptic curves, denoted as or , is an algebraic stack over classifying elliptic curves. Note that it is a special case of the moduli stack of algebraic curves . In particular its points with values in some field correspond to elliptic curves over the field, and more generally morp... | Moduli stack of elliptic curves | Mathematics | 1,199 |
22,842,521 | https://en.wikipedia.org/wiki/Black%20morel | Several species of fungi share the name black morel:
Morchella angusticeps (L.) Pers. (1801)
Morchella conica Pers.
Morchella elata Fr. (1822)
Morchella tomentosa M.Kuo (2008), the black foot morel | Black morel | Biology | 67 |
66,926 | https://en.wikipedia.org/wiki/Demodulation | Demodulation is the process of extracting the original information-bearing signal from a carrier wave. A demodulator is an electronic circuit (or computer program in a software-defined radio) that is used to recover the information content from the modulated carrier wave. There are many types of modulation, and there ... | Demodulation | Engineering | 1,358 |
56,636,552 | https://en.wikipedia.org/wiki/HackRF%20One | HackRF One is a wide band software defined radio (SDR) half-duplex transceiver created and manufactured by Great Scott Gadgets. It is able to send and receive signals. Its principal designer, Michael Ossmann, launched a successful Kickstarter campaign in 2014 with a first run of the project called HackRF. The hardware ... | HackRF One | Engineering | 329 |
486,117 | https://en.wikipedia.org/wiki/Quinary | Quinary (base 5 or pental) is a numeral system with five as the base. A possible origination of a quinary system is that there are five digits on either hand.
In the quinary place system, five numerals, from 0 to 4, are used to represent any real number. According to this method, five is written as 10, twenty-five is ... | Quinary | Mathematics | 757 |
22,409,572 | https://en.wikipedia.org/wiki/Sibling%20relationship | Siblings play a unique role in one another's lives that simulates the companionship of parents as well as the influence and assistance of friends. Because siblings often grow up in the same household, they have a large amount of exposure to one another, like other members of the immediate family. However, though a sibl... | Sibling relationship | Biology | 4,980 |
2,955,276 | https://en.wikipedia.org/wiki/Enol%20ether | In organic chemistry an enol ether is an alkene with an alkoxy substituent. The general structure is R2C=CR-OR where R = H, alkyl or aryl. A common subfamily of enol ethers are vinyl ethers, with the formula ROCH=CH2. Important enol ethers include the reagent 3,4-dihydropyran and the monomers methyl vinyl ether and eth... | Enol ether | Chemistry | 674 |
48,934,337 | https://en.wikipedia.org/wiki/Empty%20weight | The empty weight of a vehicle is based on its weight without any payload (cargo, passengers, usable fuel, etc.).
Aviation
Many different empty weight definitions exist. Here are some of the more common ones used.
GAMA standardization
In 1975 (or 1976 per FAA-H-8083-1B) the General Aviation Manufacturers Associati... | Empty weight | Physics,Engineering | 232 |
46,590,633 | https://en.wikipedia.org/wiki/Ammonium%20hexachloroiridate%28IV%29 | Ammonium hexachloroiridate(IV) is the inorganic compound with the formula (NH4)2[IrCl6]. This dark red solid is the ammonium salt of the iridium(IV) complex [IrCl6]2−. It is a commercially important iridium compound, one of the most common complexes of iridium(IV). A related but ill-defined compound is iridium tetrac... | Ammonium hexachloroiridate(IV) | Chemistry | 382 |
53,637,314 | https://en.wikipedia.org/wiki/Samsung%20DeX | Samsung DeX (stylized as SΛMSUNG DeX) is a feature included on some high-end Samsung handheld devices that enables users to extend their device into a desktop-like experience by connecting a keyboard, mouse, and monitor. The name "DeX" is a contraction of "Desktop eXperience".
For technical specifications, Samsung DeX... | Samsung DeX | Technology | 772 |
12,832 | https://en.wikipedia.org/wiki/G%20protein-coupled%20receptor | G protein-coupled receptors (GPCRs), also known as seven-(pass)-transmembrane domain receptors, 7TM receptors, heptahelical receptors, serpentine receptors, and G protein-linked receptors (GPLR), form a large group of evolutionarily related proteins that are cell surface receptors that detect molecules outside the cell... | G protein-coupled receptor | Chemistry,Biology | 9,970 |
5,353,379 | https://en.wikipedia.org/wiki/Sonchus%20asper | Sonchus asper, the prickly sow-thistle, rough milk thistle, spiny sowthistle, sharp-fringed sow thistle, or spiny-leaved sow thistle, is a widespread flowering plant in the tribe Cichorieae within the family Asteraceae.
Description
Sonchus asper is an annual or biennial herb sometimes reaching a height of with spiny ... | Sonchus asper | Biology | 318 |
6,207,936 | https://en.wikipedia.org/wiki/Villin-1 | Villin-1 is a 92.5 kDa tissue-specific actin-binding protein associated with the actin core bundle of the brush border. Villin-1 is encoded by the VIL1 gene. Villin-1 contains multiple gelsolin-like domains capped by a small (8.5 kDa) "headpiece" at the C-terminus consisting of a fast and independently folding three-he... | Villin-1 | Chemistry | 1,099 |
46,549,320 | https://en.wikipedia.org/wiki/C12orf40 | C12orf40, also known as Chromosome 12 Open Reading Frame 40, HEL-206, and Epididymis Luminal Protein 206 is a protein that in humans is encoded by the C12orf40 gene.
Gene
Human gene
In humans, the gene for C12orf40 is located on chromosome 12. There are 13 exons in the canonical isoform that is transcribed into an mR... | C12orf40 | Biology | 528 |
74,638,119 | https://en.wikipedia.org/wiki/Tildipirosin | Tildipirosin, sold under the brand name Zuprevo, is a macrolide antibiotic used in pigs and cattle.
Medical uses
In the United States, tildipirosin is indicated for the treatment or control of bovine respiratory disease associated with Mannheimia haemolytica, Pasteurella multocida, and Histophilus somni in beef and n... | Tildipirosin | Chemistry | 232 |
383,038 | https://en.wikipedia.org/wiki/Carpool | Carpooling is the sharing of car journeys so that more than one person travels in a car, and prevents the need for others to have to drive to a location themselves. Carpooling is considered a Demand-Responsive Transport (DRT) service.
By having more people using one vehicle, carpooling reduces each person's travel cos... | Carpool | Physics | 2,747 |
22,090,355 | https://en.wikipedia.org/wiki/Bovista%20nigrescens | Bovista nigrescens, commonly referred to as the brown puffball or black bovist, is an edible cream white or brown puffball. Phylogenetic relationships between Bovista nigrescens and species of Lycoperdaceae were established based on ITS and LSU sequence data from north European taxa.
Description
The fruit body of Bovi... | Bovista nigrescens | Biology | 386 |
2,026,112 | https://en.wikipedia.org/wiki/Construction%20management | Construction management (CM) aims to control the quality of a construction project's scope, time, and cost (sometimes referred to as a project management triangle or "triple constraints") to maximize the project owner's satisfaction. It uses project management techniques and software to oversee the planning, design, co... | Construction management | Engineering | 5,007 |
38,012,368 | https://en.wikipedia.org/wiki/UniPrise%20Systems | UniPrise Systems, Inc. was a privately held software company with its headquarters in Irvine, California. The company was founded in November 1993 by Joseph Perry, Randy Knapp, and Robert Mowry. Software development, engineering and technical support were located in North Chelmsford, Massachusetts.
UniPrise specializ... | UniPrise Systems | Technology | 203 |
13,860 | https://en.wikipedia.org/wiki/Hahn%E2%80%93Banach%20theorem | The Hahn–Banach theorem is a central tool in functional analysis.
It allows the extension of bounded linear functionals defined on a vector subspace of some vector space to the whole space, and it also shows that there are "enough" continuous linear functionals defined on every normed vector space to make the study of... | Hahn–Banach theorem | Mathematics | 5,010 |
460,637 | https://en.wikipedia.org/wiki/Continuous%20linear%20extension | In functional analysis, it is often convenient to define a linear transformation on a complete, normed vector space by first defining a linear transformation on a dense subset of and then continuously extending to the whole space via the theorem below. The resulting extension remains linear and bounded, and is thus... | Continuous linear extension | Mathematics | 354 |
12,404,241 | https://en.wikipedia.org/wiki/Pseudoeurycea%20nigromaculata | Pseudoeurycea nigromaculata, commonly known as the black-spotted salamander or black-spotted false brook salamander is a species of salamander in the family Plethodontidae. It is endemic to Veracruz, Mexico, and known from Cerro Chicahuaxtla ( asl)) in Cuatlalpan (the type locality, near Fortín de las Flores) and from ... | Pseudoeurycea nigromaculata | Biology | 306 |
3,597,377 | https://en.wikipedia.org/wiki/Magnetosphere%20particle%20motion | The ions and electrons of a plasma interacting with the Earth's magnetic field generally follow its magnetic field lines. These represent the force that a north magnetic pole would experience at any given point. (Denser lines indicate a stronger force.) Plasmas exhibit more complex second-order behaviors, studied as... | Magnetosphere particle motion | Physics,Astronomy | 1,622 |
52,136,533 | https://en.wikipedia.org/wiki/Skeletocutis%20bicolor | Skeletocutis bicolor is a species of poroid crust fungus in the family Polyporaceae. It is found in Singapore.
Taxonomy
The fungus was originally described as new to science in 1920 by American mycologist Curtis Gates Lloyd as Polystictus bicolor. He characterized it as follows: "Small, about a cm., growing broadly,... | Skeletocutis bicolor | Biology | 296 |
73,542,847 | https://en.wikipedia.org/wiki/Chimeric%20small%20molecule%20therapeutics | Chimeric small molecule therapeutics are a class of drugs designed with multiple active domains to operate outside of the typical protein inhibition model. While most small molecule drugs inhibit target proteins by binding their active site, chimerics form protein-protein ternary structures to induce degradation or, le... | Chimeric small molecule therapeutics | Chemistry,Biology | 1,291 |
36,692,110 | https://en.wikipedia.org/wiki/Rad%C3%B3%E2%80%93Kneser%E2%80%93Choquet%20theorem | In mathematics, the Radó–Kneser–Choquet theorem, named after Tibor Radó, Hellmuth Kneser and Gustave Choquet, states that the Poisson integral of a homeomorphism of the unit circle is a harmonic diffeomorphism of the open unit disk. The result was stated as a problem by Radó and solved shortly afterwards by Kneser in... | Radó–Kneser–Choquet theorem | Mathematics | 699 |
37,395,610 | https://en.wikipedia.org/wiki/Chromium%28III%29%20boride | Chromium(III) boride, also known as chromium monoboride (CrB), is an inorganic compound with the chemical formula CrB. It is one of the six stable binary borides of chromium, which also include Cr2B, Cr5B3, Cr3B4, CrB2, and CrB4. Like many other transition metal borides, it is extremely hard (21-23 GPa), has high stren... | Chromium(III) boride | Chemistry | 439 |
4,475,501 | https://en.wikipedia.org/wiki/H.%20C.%20%C3%98rsted%20Medal | The H. C. Ørsted Medal is a medal for scientific achievement awarded by the Danish Society for the Dissemination of Natural Science (danish: Selskabet for naturlærens udbredelse). It is named after founder of the society Hans Christian Ørsted, and awarded chiefly to Danes.
Medals
The medal is awarded in three version... | H. C. Ørsted Medal | Technology | 603 |
40,982,936 | https://en.wikipedia.org/wiki/IWXXM | ICAO Meteorological Information Exchange Model (IWXXM) is a format for reporting weather information in XML/GML. IWXXM includes XML/GML-based representations for products standardized in International Civil Aviation Organization (ICAO) Annex III, such as METAR/SPECI, TAF, SIGMET, AIRMET, Tropical Cyclone Advisory (TCA)... | IWXXM | Technology | 1,061 |
27,373,279 | https://en.wikipedia.org/wiki/Trabucco | The trabucco (), known in some southern dialects as trabocco or travocc, is an ancient fishing machine typical of the Adriatic shores of Abruzzo — famously dubbed the Costa dei Trabocchi ( Trabocchi Coast ) and the Gargano coast, where they are preserved as historical monuments within the Gargano National Park. These d... | Trabucco | Engineering | 1,671 |
320,498 | https://en.wikipedia.org/wiki/Computer-mediated%20communication | Computer-mediated communication (CMC) is defined as any human communication that occurs through the use of two or more electronic devices. While the term has traditionally referred to those communications that occur via computer-mediated formats (e.g., instant messaging, email, chat rooms, online forums, social networ... | Computer-mediated communication | Technology | 1,918 |
21,923,868 | https://en.wikipedia.org/wiki/Oscillating%20gene | In molecular biology, an oscillating gene is a gene that is expressed in a rhythmic pattern or in periodic cycles. Oscillating genes are usually circadian and can be identified by periodic changes in the state of an organism. Circadian rhythms, controlled by oscillating genes, have a period of approximately 24 hours. ... | Oscillating gene | Chemistry,Biology | 2,234 |
417,665 | https://en.wikipedia.org/wiki/Cubane | Cubane is a synthetic hydrocarbon compound with the formula . It consists of eight carbon atoms arranged at the corners of a cube, with one hydrogen atom attached to each carbon atom. A solid crystalline substance, cubane is one of the Platonic hydrocarbons and a member of the prismanes. It was first synthesized in 196... | Cubane | Physics,Chemistry | 1,487 |
24,392,848 | https://en.wikipedia.org/wiki/Coelenteramide | Coelenteramide is the oxidized product, or oxyluciferin, of the bioluminescent reactions in many marine organisms that use coelenterazine. It was first isolated as a blue fluorescent protein from Aequorea victoria after the animals were stimulated to emit light. Under basic conditions, the compound will break down furt... | Coelenteramide | Chemistry,Biology | 113 |
22,358,951 | https://en.wikipedia.org/wiki/Cyptotrama%20asprata | Cyptotrama asprata (alternatively spelled aspratum), commonly known as the golden-scruffy collybia or spiny woodknight is a saprobic species of mushroom in the family Physalacriaceae. Widely distributed in tropical regions of the world, it is characterized by the bright orange to yellow cap that in young specimens is ... | Cyptotrama asprata | Biology | 1,105 |
61,523,241 | https://en.wikipedia.org/wiki/Tomka%20gas%20test%20site | Tomka gas test site () was a secret chemical weapons testing facility near a place codenamed Volsk-18 (Wolsk, in German literature), 20 km off Volsk, now Shikhany, Saratov Oblast, Russia created within the framework of German-Soviet military cooperation to circumvent the demilitarization provisions of the post-World Wa... | Tomka gas test site | Chemistry,Engineering | 309 |
6,100,522 | https://en.wikipedia.org/wiki/Dirichlet%20density | In mathematics, the Dirichlet density (or analytic density) of a set of primes, named after Peter Gustav Lejeune Dirichlet, is a measure of the size of the set that is easier to use than the natural density.
Definition
If A is a subset of the prime numbers, the Dirichlet density of A
is the limit
if it exists. Note ... | Dirichlet density | Mathematics | 572 |
29,586,267 | https://en.wikipedia.org/wiki/Origin%20and%20function%20of%20meiosis | The origin and function of meiosis are currently not well understood scientifically, and would provide fundamental insight into the evolution of sexual reproduction in eukaryotes. There is no current consensus among biologists on the questions of how sex in eukaryotes arose in evolution, what basic function sexual repr... | Origin and function of meiosis | Biology | 3,171 |
48,520,204 | https://en.wikipedia.org/wiki/Computational%20anatomy | Computational anatomy is an interdisciplinary field of biology focused on quantitative investigation and modelling of anatomical shapes variability. It involves the development and application of mathematical, statistical and data-analytical methods for modelling and simulation of biological structures.
The field is b... | Computational anatomy | Mathematics,Engineering,Biology | 9,264 |
619,984 | https://en.wikipedia.org/wiki/Surface%20layer | The surface layer is the layer of a turbulent fluid most affected by interaction with a solid surface or the surface separating a gas and a liquid where the characteristics of the turbulence depend on distance from the interface. Surface layers are characterized by large normal gradients of tangential velocity and larg... | Surface layer | Physics,Environmental_science | 1,320 |
42,043,691 | https://en.wikipedia.org/wiki/Agricultural%20value%20chain | An agricultural value chain is the integrated range of goods and services (value chain) necessary for an agricultural product to move from the producer to the final consumer. The concept has been used since the beginning of the millennium, primarily by those working in agricultural development in developing countries, ... | Agricultural value chain | Chemistry | 2,260 |
11,894,889 | https://en.wikipedia.org/wiki/Cellular%20microarray | A cellular microarray (or cell microarray) is a laboratory tool that allows for the multiplex interrogation of living cells on the surface of a solid support. The support, sometimes called a "chip", is spotted with varying materials, such as antibodies, proteins, or lipids, which can interact with the cells, leading t... | Cellular microarray | Biology | 649 |
220,116 | https://en.wikipedia.org/wiki/The%20Invincible | The Invincible () is a hard science fiction novel by Polish writer Stanisław Lem, serialized in Gazeta Bialostocka in 1963 and published as a book in 1964.
The Invincible originally appeared as the title story in Lem's collection Niezwyciężony i inne opowiadania ("The Invincible and Other Stories"). A translation into... | The Invincible | Materials_science | 1,137 |
2,067,647 | https://en.wikipedia.org/wiki/El%20Farol%20Bar%20problem | The El Farol bar problem is a problem in game theory. Every Thursday night, a fixed population want to go have fun at the El Farol Bar, unless it's too crowded.
If less than 60% of the population go to the bar, they'll all have more fun than if they stayed home.
If more than 60% of the population go to the bar, they... | El Farol Bar problem | Mathematics | 1,059 |
59,111,219 | https://en.wikipedia.org/wiki/Multilevel%20Flow%20Modeling | Multilevel Flow Modeling (MFM) is a framework for modeling industrial processes.
MFM is a kind of functional modeling employing the concepts of abstraction, decomposition, and functional representation. The approach regards the purpose, rather than the physical behavior of a system as its defining element. MFM hierar... | Multilevel Flow Modeling | Engineering | 698 |
3,958,742 | https://en.wikipedia.org/wiki/List%20of%20building%20materials | This is a list of building materials.
Many types of building materials are used in the construction industry to create buildings and structures. These categories of materials and products are used by architects and construction project managers to specify the materials and methods used for building projects.
Some bui... | List of building materials | Physics,Engineering | 330 |
32,701,959 | https://en.wikipedia.org/wiki/Ion%20layer%20gas%20reaction | Ion layer gas reaction (ILGAR®) is a non-vacuum, thin-film deposition technique developed and patented by the group of Professor Dr. Christian-Herbert Fischer at the Helmholtz-Zentrum Berlin for materials and energy in Berlin, Germany. It is a sequential and cyclic process that enables the deposition of semiconductor ... | Ion layer gas reaction | Chemistry,Materials_science,Mathematics | 866 |
47,385,194 | https://en.wikipedia.org/wiki/Traverse%20%28trench%20warfare%29 | In trench warfare, a traverse is an adaptation to reduce casualties to defenders occupying a trench. One form of traverse is a U-shaped detour in the trench with the trench going around a protrusion formed of earth and sandbags. The fragments or shrapnel, or shockwave from a shell landing and exploding within a trench ... | Traverse (trench warfare) | Engineering | 333 |
5,972,583 | https://en.wikipedia.org/wiki/Misumena%20vatia | Misumena vatia is a species of crab spider found in Europe and North America. In North America, it is called the goldenrod crab spider or flower (crab) spider, as it is commonly found hunting in goldenrod sprays and milkweed plants. They are called crab spiders because of their unique ability to walk sideways as well a... | Misumena vatia | Biology | 6,181 |
60,377,295 | https://en.wikipedia.org/wiki/West%20PC-800 | The West PC-800 was a home computer introduced by Norwegian company West Computer AS in 1984. The computer was designed as an alarm center allowing use of several CPUs (6502, Z80, 8086, 68000) and operating systems. The company introduced an IBM PC compatible in early 1986 and the West PC-800 line was phased out.
Hist... | West PC-800 | Technology | 1,313 |
19,657,952 | https://en.wikipedia.org/wiki/Ladder%20graph | In the mathematical field of graph theory, the ladder graph is a planar, undirected graph with vertices and edges.
The ladder graph can be obtained as the Cartesian product of two path graphs, one of which has only one edge: .
Properties
By construction, the ladder graph Ln is isomorphic to the grid graph G2,n and... | Ladder graph | Mathematics | 306 |
6,135,775 | https://en.wikipedia.org/wiki/Grimm%27s%20hydride%20displacement%20law | Grimm's Hydride Displacement Law is an early hypothesis, formulated in 1925, to describe bioisosterism, the ability of certain chemical groups to function as or mimic other chemical groups.
“Atoms anywhere up to four places in the periodic system before an inert gas change their properties by uniting with one to four ... | Grimm's hydride displacement law | Chemistry,Biology | 254 |
1,144,848 | https://en.wikipedia.org/wiki/Sodium%20amalgam | Sodium amalgam, with the common formula Na(Hg), is an alloy of mercury and sodium. The term amalgam is used for alloys, intermetallic compounds, and solutions (both solid solutions and liquid solutions) involving mercury as a major component. Sodium amalgams are often used in reactions as strong reducing agents with b... | Sodium amalgam | Chemistry | 623 |
26,700,564 | https://en.wikipedia.org/wiki/Harmonic%20differential | In mathematics, a real differential one-form ω on a surface is called a harmonic differential if ω and its conjugate one-form, written as ω∗, are both closed.
Explanation
Consider the case of real one-forms defined on a two dimensional real manifold. Moreover, consider real one-forms that are the real parts of compl... | Harmonic differential | Mathematics | 419 |
28,306,592 | https://en.wikipedia.org/wiki/NAS%20Award%20in%20the%20Neurosciences | The NAS Award in the Neurosciences is awarded by the U.S. National Academy of Sciences "in recognition of extraordinary contributions to progress in the fields of neuroscience, including neurochemistry, neurophysiology, neuropharmacology, developmental neuroscience, neuroanatomy, and behavioral and clinical neuroscien... | NAS Award in the Neurosciences | Technology | 622 |
4,024,861 | https://en.wikipedia.org/wiki/Transpiration%20stream | In plants, the transpiration stream is the uninterrupted stream of water and solutes which is taken up by the roots and transported via the xylem to the leaves where it evaporates into the air/apoplast-interface of the substomatal cavity. It is driven by capillary action and in some plants by root pressure. The main dr... | Transpiration stream | Biology | 636 |
774,009 | https://en.wikipedia.org/wiki/Hulbert%20Harrington%20Warner | Hulbert Harrington Warner (1842–1923) was a Rochester, New York businessman and philanthropist who made his fortune from the sales of patent medicine.
Biography
He was born near Syracuse, New York, in a small settlement called Warners. Warners had been named for Warner's grandfather, Seth, who had moved there in 1807... | Hulbert Harrington Warner | Astronomy | 1,963 |
17,118,964 | https://en.wikipedia.org/wiki/Confusion%20of%20the%20inverse | Confusion of the inverse, also called the conditional probability fallacy or the inverse fallacy, is a logical fallacy whereupon a conditional probability is equated with its inverse; that is, given two events A and B, the probability of A happening given that B has happened is assumed to be about the same as the proba... | Confusion of the inverse | Mathematics | 918 |
67,550,887 | https://en.wikipedia.org/wiki/Plant%20Protection%20and%20Inspection%20Services%20%28Israel%29 | The Plant Protection and Inspection Services unit is an agency of the Ministry of Agriculture of Israel. PPIS handles phytosanitary matters both within Israel and in foreign trade. In pursuit of that purpose, it operates offices both within the country and in its foreign embassies, and acts as representative to some in... | Plant Protection and Inspection Services (Israel) | Biology | 114 |
58,606,254 | https://en.wikipedia.org/wiki/Hugh%20C.%20Williams | Hugh Cowie Williams (born 23 July 1943) is a Canadian mathematician. He deals with number theory and cryptography.
Early life
Williams studied mathematics at the University of Waterloo (bachelor's degree 1966, master's degree 1967), where he received his doctorate in 1969 in computer science under Ronald C. Mullin an... | Hugh C. Williams | Mathematics | 720 |
9,742 | https://en.wikipedia.org/wiki/Erd%C5%91s%20number | The Erdős number () describes the "collaborative distance" between mathematician Paul Erdős and another person, as measured by authorship of mathematical papers. The same principle has been applied in other fields where a particular individual has collaborated with a large and broad number of peers.
Overview
Paul Er... | Erdős number | Mathematics,Technology | 3,209 |
4,622,852 | https://en.wikipedia.org/wiki/NAG%20Numerical%20Library | The NAG Numerical Library is a commercial software product developed and sold by The Numerical Algorithms Group Ltd. It is a software library of numerical-analysis routines, containing more than 1,900 mathematical and statistical algorithms. Areas covered by the library include linear algebra, optimization, quadrature... | NAG Numerical Library | Technology | 616 |
342,127 | https://en.wikipedia.org/wiki/Anti-gravity | Anti-gravity (also known as non-gravitational field) is the phenomenon of creating a place or object that is free from the force of gravity. It does not refer to either the lack of weight under gravity experienced in free fall or orbit, or to balancing the force of gravity with some other force, such as electromagnetis... | Anti-gravity | Physics,Astronomy | 3,322 |
12,422,990 | https://en.wikipedia.org/wiki/C4H8O4 | {{DISPLAYTITLE:C4H8O4}}
The molecular formula C4H8O4 (molar mass: 120.10 g/mol, exact mass: 120.042259 u) may refer to:
Tetroses
Erythrose
Erythrulose (or D-Erythrulose)
Threose
Molecular formulas | C4H8O4 | Physics,Chemistry | 79 |
34,237,939 | https://en.wikipedia.org/wiki/GeneDB | GeneDB was a genome database for eukaryotic and prokaryotic pathogens.
References
External links
http://www.genedb.org
Genome databases
Pathogen genomics
Pathogenic microbes | GeneDB | Biology | 43 |
7,085,773 | https://en.wikipedia.org/wiki/Timeline%20of%20planetariums | This is a timeline of the history of planetariums.
Historic influences
Development of modern planetariums
Digital and Fulldome video
References
Planetariums
Planetariums | Timeline of planetariums | Astronomy | 34 |
23,714,121 | https://en.wikipedia.org/wiki/C12H18N2O2 | {{DISPLAYTITLE:C12H18N2O2}}
The molecular formula C12H18N2O2 may refer to:
Doxpicomine
Isophorone diisocyanate
Mexacarbate
Miotine
Molecular formulas | C12H18N2O2 | Physics,Chemistry | 56 |
3,242,271 | https://en.wikipedia.org/wiki/HD%20128311 | HD 128311 is a variable star in the northern constellation of Boötes. It has the variable star designation HN Boötis, while HD 128311 is the star's designation in the Henry Draper Catalogue. The star is invisible to the naked eye with an apparent visual magnitude that fluctuates around 7.48. It is located at a distance... | HD 128311 | Astronomy | 541 |
153,563 | https://en.wikipedia.org/wiki/Scilab | Scilab is a free and open-source, cross-platform numerical computational package and a high-level, numerically oriented programming language. It can be used for signal processing, statistical analysis, image enhancement, fluid dynamics simulations, numerical optimization, and modeling, simulation of explicit and impli... | Scilab | Mathematics | 1,367 |
44,940,620 | https://en.wikipedia.org/wiki/C/1490%20Y1 | C/1490 Y1 is a comet that was recorded and observed across East Asia, particularly China and Korea, from December 1490 to February 1491. It is the parent body of the Quadrantids meteor shower.
Orbit
John Russell Hind, Benjamin Peirce, and Ichiro Hasegawa made the initial orbital calculations for the comet, which all ... | C/1490 Y1 | Astronomy | 85 |
77,348,149 | https://en.wikipedia.org/wiki/Sacred%20enclosure | In the study of the history of religions and anthropology, a sacred enclosure refers to any structure intended to separate two spaces: a sacred space and a profane space. Generally, it is a separation wall erected to mark the difference between the two spaces, acquiring significant symbolic meaning. Many human cultures... | Sacred enclosure | Engineering | 1,181 |
32,085,457 | https://en.wikipedia.org/wiki/Quasielastic%20scattering | In physics, quasielastic scattering designates a limiting case of inelastic scattering, characterized by energy transfers being small compared to the incident energy of the scattered particles.
The term was originally coined in nuclear physics.
It was applied to thermal neutron scattering by Leon van Hove and Pierre ... | Quasielastic scattering | Physics,Chemistry | 101 |
2,013,362 | https://en.wikipedia.org/wiki/Klotski | Klotski (from ) is a sliding block puzzle thought to have originated in the early 20th century. The name may refer to a specific layout of ten blocks, or in a more global sense to refer to a whole group of similar sliding-block puzzles where the aim is to move a specific block to some predefined location.
Rules
Like o... | Klotski | Mathematics | 2,415 |
25,636,339 | https://en.wikipedia.org/wiki/List%20of%20heaviest%20bells | Following is a list of the heaviest bells known to have been cast, and the period of time during which they held that title.
Heaviest functioning bell in the world
The title of heaviest functioning bell in the world has been held chronologically by:
The Great Bell of Dhammazedi
At approximately 300 tons, the Great... | List of heaviest bells | Physics | 954 |
31,833,878 | https://en.wikipedia.org/wiki/SPRED1 | Sprouty-related, EVH1 domain-containing protein 1 (pronounced spread-1) is a protein that in humans is encoded by the SPRED1 gene located on chromosome 15q13.2 and has seven coding exons.
Function
SPRED-1 is a member of the Sprouty family of proteins and is phosphorylated by tyrosine kinase in response to several gr... | SPRED1 | Chemistry | 432 |
42,962,805 | https://en.wikipedia.org/wiki/Conservation%20and%20restoration%20of%20plastic%20objects | Conservation and restoration of objects made from plastics is work dedicated to the conservation of objects of historical and personal value made from plastics. When applied to cultural heritage, this activity is generally undertaken by a conservator-restorer.
Background
Within museum collections, there are a variety ... | Conservation and restoration of plastic objects | Physics | 2,196 |
286,918 | https://en.wikipedia.org/wiki/Intermedia | Intermedia is an art theory term coined in the mid-1960s by Fluxus artist Dick Higgins to describe the strategies of interdisciplinarity that occur within artworks existing between artistic genres. It was also used by John Brockman to refer to works in expanded cinema that were associated with Jonas Mekas' Film-Makers’... | Intermedia | Technology | 923 |
22,622,659 | https://en.wikipedia.org/wiki/MORE%20protocol | MORE, which stands for MAC independent Opportunistic Routing, is an opportunistic routing protocol designed for wireless mesh networks. The protocol removes the dependency that other opportunistic routing protocols, such as ExOR and SOAR have on the MAC layer. Both of these protocols make use of a scheduler, to co-ord... | MORE protocol | Technology,Engineering | 533 |
4,005,703 | https://en.wikipedia.org/wiki/102P/Shoemaker | 102P/Shoemaker, also known as Shoemaker 1, is a periodic comet in the Solar System. It was first seen in 1984 and then again in 1991. Images taken of it in 1999 were not recognized until 2006 when it was once again observed. It was unexpectedly dim in each of these returns.
References
External links
Orbital simula... | 102P/Shoemaker | Astronomy | 328 |
5,094,208 | https://en.wikipedia.org/wiki/Fritz%20Carlson | Fritz David Carlson (23 July 1888 – 28 November 1952) was a Swedish mathematician. After the death of Torsten Carleman, he headed the Mittag-Leffler Institute.
Carlson's contributions to analysis include Carlson's theorem, the Polyá–Carlson theorem on rational functions, and Carlson's inequality
In number theory, ... | Fritz Carlson | Mathematics | 145 |
62,165,952 | https://en.wikipedia.org/wiki/Neopentylene%20fluorophosphate | Neopentylene fluorophosphate, also known as NPF, is an organophosphate compound that is classified as a nerve agent. It has a comparatively low potency, but is stable and persistent, with a delayed onset of action and long duration of effects.
See also
Diisopropyl fluorophosphate
IPTBO
References
Organophosphate i... | Neopentylene fluorophosphate | Chemistry | 104 |
2,178,487 | https://en.wikipedia.org/wiki/Epitope%20mapping | In immunology, epitope mapping is the process of experimentally identifying the binding site, or epitope, of an antibody on its target antigen (usually, on a protein). Identification and characterization of antibody binding sites aid in the discovery and development of new therapeutics, vaccines, and diagnostics. Epito... | Epitope mapping | Biology | 1,933 |
331,080 | https://en.wikipedia.org/wiki/Matryoshka%20doll | Matryoshka dolls ( ; ), also known as stacking dolls, nesting dolls, Russian tea dolls, or Russian dolls, are a set of wooden dolls of decreasing size placed one inside another. The name Matryoshka, is a diminutive form of Matryosha (), in turn a hypocoristic of the Russian female first name Matryona ().
A set of matr... | Matryoshka doll | Mathematics | 2,585 |
49,489,200 | https://en.wikipedia.org/wiki/Population%20proportion | In statistics a population proportion, generally denoted by or the Greek letter , is a parameter that describes a percentage value associated with a population. A census can be conducted to determine the actual value of a population parameter, but often a census is not practical due to its costs and time consumption. ... | Population proportion | Mathematics | 1,597 |
11,421,361 | https://en.wikipedia.org/wiki/Potato%20virus%20X%20cis-acting%20regulatory%20element | The Potato virus X cis-acting regulatory element is a cis-acting regulatory element found in the 3' UTR of the Potato virus X genome. This element has been found to be required for minus strand RNA accumulation and is essential for efficient viral replication.
See also
Poxvirus AX element late mRNA cis-regulatory ele... | Potato virus X cis-acting regulatory element | Chemistry | 74 |
580,972 | https://en.wikipedia.org/wiki/%CE%91-Carotene | α-Carotene (alpha-carotene) is a form of carotene with a β-ionone ring at one end and an α-ionone ring at the opposite end. It is the second most common form of carotene.
Human physiology
In American and Chinese adults, the mean concentration of serum α-carotene was 4.71 μg/dL. Including 4.22 μg/dL among men and 5.31 ... | Α-Carotene | Chemistry,Biology | 277 |
32,028,466 | https://en.wikipedia.org/wiki/List%20of%20Vocaloid%20products | The following is a list of products released for the Vocaloid software in order of release date.
Products
Vocaloid
Vocaloid 2
VocaloWitter
iVocaloid
eVocaloid
Vocaloid 3
Vocaloid 4
Vocaloid 5
Vocaloid 6
Mobile Vocaloid Editor
Vocaloid Neo
Commercially unreleased
Notes
References
External links
English... | List of Vocaloid products | Technology | 73 |
17,862,076 | https://en.wikipedia.org/wiki/Phosphate%20test | A range of qualitative and quantitative tests have been developed to detect phosphate ions () in solution. Such tests find use in industrial processes, scientific research, and environmental water monitoring.
Quantitative method
A quantitative method to determine the amount of phosphate present in samples, such as boi... | Phosphate test | Chemistry | 368 |
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