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https://en.wikipedia.org/wiki/Germania%20%28St.%20Paul%27s%20Church%2C%20Frankfurt%20am%20Main%29 | Germania is the name of a painting that was probably created in March 1848. It hung in the St. Paul's Church (Paulskirche)) in Frankfurt, Germany. At that time, first the so-called Pre-Parliament and then the Frankfurt National Assembly, the first all-German parliament, met there. The National Assembly was a popular mo... |
https://en.wikipedia.org/wiki/Enoxolone | Enoxolone (INN, BAN; also known as glycyrrhetinic acid or glycyrrhetic acid) is a pentacyclic triterpenoid derivative of the beta-amyrin type obtained from the hydrolysis of glycyrrhizic acid, which was obtained from the herb liquorice. It is used in flavoring and it masks the bitter taste of drugs like aloe and quinin... |
https://en.wikipedia.org/wiki/Hilbert%27s%20irreducibility%20theorem | In number theory, Hilbert's irreducibility theorem, conceived by David Hilbert in 1892, states that every finite set of irreducible polynomials in a finite number of variables and having rational number coefficients admit a common specialization of a proper subset of the variables to rational numbers such that all the ... |
https://en.wikipedia.org/wiki/Dependent%20ML | Dependent ML is an experimental functional programming language proposed by Hongwei Xi and Frank Pfenning. Dependent ML extends ML by a restricted notion of dependent types: types may be dependent on static indices of type Nat (natural numbers). Dependent ML employs a constraint theorem prover to decide a strong equat... |
https://en.wikipedia.org/wiki/Orphon | An orphon is a gene located outside the main chromosomal locus, i.e., it may be dispersed to an unconnected genomic location.
Orphons have been found in both protein-coding and non-protein-coding gene families, which suggests that most gene transcription processes do not constitute a restriction on the development of... |
https://en.wikipedia.org/wiki/Light%20dressed%20state | In the fields of atomic, molecular, and optical science, the term light dressed state refers to a quantum state of an atomic or molecular system interacting with a laser light
in terms of the Floquet picture, i.e. roughly like an atom or a molecule plus a photon. The Floquet picture is based on the Floquet theorem in d... |
https://en.wikipedia.org/wiki/Critical%20point%20%28thermodynamics%29 | In thermodynamics, a critical point (or critical state) is the end point of a phase equilibrium curve. One example is the liquid–vapor critical point, the end point of the pressure–temperature curve that designates conditions under which a liquid and its vapor can coexist. At higher temperatures, the gas cannot be liqu... |
https://en.wikipedia.org/wiki/Extreme%20Graphics | Extreme Graphics is a computer graphics architecture for Silicon Graphics computer workstations. Extreme Graphics was developed in 1993 and was available as a high-end graphics option on workstations such as the Indigo2, released during the mid-1990s. Extreme Graphics gives the workstation real-time 2D and 3D graphics ... |
https://en.wikipedia.org/wiki/Feza%20G%C3%BCrsey | Feza Gürsey (; April 7, 1921 – April 13, 1992) was a Turkish mathematician and physicist. Among his contributions to theoretical physics, his work on the chiral model and on SU(6) symmetry of the quark model are the most well-known.
Early life
Feza Gürsey was born on April 7, 1921, in Istanbul, to Reşit Süreyya Gürse... |
https://en.wikipedia.org/wiki/Conversion%20between%20quaternions%20and%20Euler%20angles | Spatial rotations in three dimensions can be parametrized using both Euler angles and unit quaternions. This article explains how to convert between the two representations. Actually this simple use of "quaternions" was first presented by Euler some seventy years earlier than Hamilton to solve the problem of magic squ... |
https://en.wikipedia.org/wiki/Environmental%20toxicants%20and%20fetal%20development | Environmental toxicants and fetal development is the impact of different toxic substances from the environment on the development of the fetus. This article deals with potential adverse effects of environmental toxicants on the prenatal development of both the embryo or fetus, as well as pregnancy complications. The hu... |
https://en.wikipedia.org/wiki/Wedge | A wedge is a triangular shaped tool, a portable inclined plane, and one of the six simple machines. It can be used to separate two objects or portions of an object, lift up an object, or hold an object in place. It functions by converting a force applied to its blunt end into forces perpendicular (normal) to its inclin... |
https://en.wikipedia.org/wiki/APC%20by%20Schneider%20Electric | APC by Schneider Electric (formerly American Power Conversion Corporation) is a manufacturer of uninterruptible power supplies (UPS), electronics peripherals, and data center products.
In 2007, Schneider Electric acquired APC and combined it with MGE UPS Systems to form Schneider Electric's Critical Power & Cooling Se... |
https://en.wikipedia.org/wiki/Ion%20trap | An ion trap is a combination of electric and/or magnetic fields used to capture charged particles — known as ions — often in a system isolated from an external environment. Atomic and molecular ion traps have a number of applications in physics and chemistry such as precision mass spectrometry, improved atomic frequenc... |
https://en.wikipedia.org/wiki/Pinnacle%20Studio | Pinnacle Studio is a video editing program originally developed by Pinnacle Systems as consumer-level software. Upon Pinnacle System's acquisition of Munich-based FAST Multimedia, Pinnacle integrated the professional code base of FAST's editing software, (since re-branded as Pinnacle Liquid) beginning with Pinnacle Stu... |
https://en.wikipedia.org/wiki/PCI-SIG | PCI-SIG, or Peripheral Component Interconnect Special Interest Group, is an electronics industry consortium responsible for specifying the Peripheral Component Interconnect (PCI), PCI-X, and PCI Express (PCIe) computer buses. It is based in Beaverton, Oregon. The PCI-SIG is distinct from the similarly named and adjace... |
https://en.wikipedia.org/wiki/HyperTransport%20Consortium | The HyperTransport Consortium is an industry consortium responsible for specifying and promoting the computer bus technology called HyperTransport.
Organizational form
The Technical Working Group along with several Task Forces manage the HyperTransport specification and drive new developments. A Marketing Working Gro... |
https://en.wikipedia.org/wiki/Link%20aggregation | In computer networking, link aggregation is the combining (aggregating) of multiple network connections in parallel by any of several methods. Link aggregation increases total throughput beyond what a single connection could sustain, and provides redundancy where all but one of the physical links may fail without losi... |
https://en.wikipedia.org/wiki/Freifunk | Freifunk (German for: "free radio") is a non-commercial open grassroots initiative to support free computer networks in the German region. Freifunk is part of the international movement for a wireless community network. The initiative counts about 400 local communities with over 41,000 access points. Among them, Münste... |
https://en.wikipedia.org/wiki/Surface%20core%20level%20shift | A surface core level shift (SCS) is a kind of core-level shift that often emerges in X-ray photoelectron spectroscopy spectra of surface atoms.
Because surface atoms have different chemical environments from bulk atoms, small shifts of binding energies are observed by X-ray photoelectron spectroscopy. SCS is ascribed ... |
https://en.wikipedia.org/wiki/Redundancy%20%28engineering%29 | In engineering and systems theory, redundancy is the intentional duplication of critical components or functions of a system with the goal of increasing reliability of the system, usually in the form of a backup or fail-safe, or to improve actual system performance, such as in the case of GNSS receivers, or multi-threa... |
https://en.wikipedia.org/wiki/Redundancy%20%28information%20theory%29 | In information theory, redundancy measures the fractional difference between the entropy of an ensemble , and its maximum possible value . Informally, it is the amount of wasted "space" used to transmit certain data. Data compression is a way to reduce or eliminate unwanted redundancy, while forward error correction i... |
https://en.wikipedia.org/wiki/Global%20Information%20Grid | The Global Information Grid (GIG) is a network of information transmission and processing maintained by the United States Department of Defense. More descriptively, it is a worldwide network of information transmission, of associated processes, and of personnel serving to collect, process, safeguard, transmit, and mana... |
https://en.wikipedia.org/wiki/Stanford%20Research%20Institute%20Problem%20Solver | The Stanford Research Institute Problem Solver, known by its acronym STRIPS, is an automated planner developed by Richard Fikes and Nils Nilsson in 1971 at SRI International. The same name was later used to refer to the formal language of the inputs to this planner. This language is the base for most of the languages f... |
https://en.wikipedia.org/wiki/Savannah%20cat | The Savannah is a breed of hybrid cat developed in the late 20th century from crossing a serval (Leptailurus serval) with a domestic cat (Felis catus). This hybridization typically produces large and lean offspring, with the Serval's characteristic large ears and markedly brown-spotted coats. F1 and F2 male Savannahs c... |
https://en.wikipedia.org/wiki/Hackathon | A hackathon (also known as a hack day, hackfest, datathon or codefest; a portmanteau of hacking and marathon) is an event where people engage in rapid and collaborative engineering over a relatively short period of time such as 24 or 48 hours. They are often run using agile software development practices, such as sprin... |
https://en.wikipedia.org/wiki/Fredholm%27s%20theorem | In mathematics, Fredholm's theorems are a set of celebrated results of Ivar Fredholm in the Fredholm theory of integral equations. There are several closely related theorems, which may be stated in terms of integral equations, in terms of linear algebra, or in terms of the Fredholm operator on Banach spaces.
The Fredh... |
https://en.wikipedia.org/wiki/Lipofuscin | Lipofuscin is the name given to fine yellow-brown pigment granules composed of lipid-containing residues of lysosomal digestion. It is considered to be one of the aging or "wear-and-tear" pigments, found in the liver, kidney, heart muscle, retina, adrenals, nerve cells, and ganglion cells.
Formation and turnover
Lipo... |
https://en.wikipedia.org/wiki/Four-fermion%20interactions | In quantum field theory, fermions are described by anticommuting spinor fields. A four-fermion interaction describes a local interaction between four fermionic fields at a point. Local here means that it all happens at the same spacetime point. This might be an effective field theory or it might be fundamental.
Relat... |
https://en.wikipedia.org/wiki/Product%20order | In mathematics, given a partial order and on a set and , respectively, the product order (also called the coordinatewise order or componentwise order) is a partial ordering on the Cartesian product Given two pairs and in declare that if and
Another possible ordering on is the lexicographical order, which ... |
https://en.wikipedia.org/wiki/Tom%20DeMarco | Tom DeMarco (born August 20, 1940) is an American software engineer, author, and consultant on software engineering topics. He was an early developer of structured analysis in the 1970s.
Early life and education
Tom DeMarco was born in Hazleton, Pennsylvania. He received a BSEE degree in Electrical Engineering from C... |
https://en.wikipedia.org/wiki/Fan%20film | A fan film is a film or video inspired by a film, television program, comic book, book, or video game created by fans rather than by the source's copyright holders or creators. Fan filmmakers have traditionally been amateurs, but some of the more notable films have actually been produced by professional filmmakers as f... |
https://en.wikipedia.org/wiki/Axillary%20bud | The axillary bud (or lateral bud) is an embryonic or organogenic shoot located in the axil of a leaf. Each bud has the potential to form shoots, and may be specialized in producing either vegetative shoots (stems and branches) or reproductive shoots (flowers). Once formed, a bud may remain dormant for some time, or it ... |
https://en.wikipedia.org/wiki/Osmoconformer | Osmoconformers are marine organisms that maintain an internal environment which is isotonic to their external environment. This means that the osmotic pressure of the organism's cells is equal to the osmotic pressure of their surrounding environment. By minimizing the osmotic gradient, this subsequently minimizes the... |
https://en.wikipedia.org/wiki/Brookings%20Report | Proposed Studies on the Implications of Peaceful Space Activities for Human Affairs, often referred to as "the Brookings Report", was a 1960 report commissioned by NASA and created by the Brookings Institution in collaboration with NASA's Committee on Long-Range Studies. It was submitted to the House Committee on Scie... |
https://en.wikipedia.org/wiki/Strongly%20compact%20cardinal | In set theory, a branch of mathematics, a strongly compact cardinal is a certain kind of large cardinal.
A cardinal κ is strongly compact if and only if every κ-complete filter can be extended to a κ-complete ultrafilter.
Strongly compact cardinals were originally defined in terms of infinitary logic, where logical o... |
https://en.wikipedia.org/wiki/FAAC | FAAC or Freeware Advanced Audio Coder is a software project which includes the AAC encoder FAAC and decoder FAAD2. It supports MPEG-2 AAC as well as MPEG-4 AAC. It supports several MPEG-4 Audio object types (LC, Main, LTP for encoding and SBR, PS, ER, LD for decoding), file formats (ADTS AAC, raw AAC, MP4), multichanne... |
https://en.wikipedia.org/wiki/Mauritia%20flexuosa | Mauritia flexuosa, known as the moriche palm, ité palm, ita, buriti, muriti, miriti (Brazil), canangucho (Colombia), morete (Ecuador), or aguaje (Peru), is a palm tree. It grows in and near swamps and other wet areas in tropical South America.
Mauritia flexuosa, a tree, can reach up to in height. The large leaves for... |
https://en.wikipedia.org/wiki/Fuzzy%20electronics | Fuzzy electronics is an electronic technology that uses fuzzy logic, instead of the two-state Boolean logic more commonly used in digital electronics. Fuzzy electronics is fuzzy logic implemented on dedicated hardware. This is to be compared with fuzzy logic implemented in software running on a conventional processor.... |
https://en.wikipedia.org/wiki/Flavin%20mononucleotide | Flavin mononucleotide (FMN), or riboflavin-5′-phosphate, is a biomolecule produced from riboflavin (vitamin B2) by the enzyme riboflavin kinase and functions as the prosthetic group of various oxidoreductases, including NADH dehydrogenase, as well as cofactor in biological blue-light photo receptors. During the catalyt... |
https://en.wikipedia.org/wiki/Amyloid%20beta | Amyloid beta (Aβ or Abeta) denotes peptides of 36–43 amino acids that are the main component of the amyloid plaques found in the brains of people with Alzheimer's disease. The peptides derive from the amyloid-beta precursor protein (APP), which is cleaved by beta secretase and gamma secretase to yield Aβ in a cholester... |
https://en.wikipedia.org/wiki/Superhydrophilicity | Superhydrophilicity refers to the phenomenon of excess hydrophilicity, or attraction to water; in superhydrophilic materials, the contact angle of water is equal to zero degrees. This effect was discovered in 1995 by the Research Institute of Toto Ltd. for titanium dioxide irradiated by sunlight. Under light irradiatio... |
https://en.wikipedia.org/wiki/Interventionism%20%28medicine%29 | Interventionism, when discussing the practice of medicine, is generally a derogatory term used by critics of a medical model in which patients are viewed as passive recipients receiving external treatments provided by the physician that have the effect of prolonging life, or at least of providing a subjective sense of ... |
https://en.wikipedia.org/wiki/Vanguard%20%28microkernel%29 | Vanguard is a discontinued experimental microkernel developed at Apple Computer, in the research-oriented Apple Advanced Technology Group (ATG) in the early 1990s. Based on the V-System, Vanguard introduced standardized object identifiers and a unique message chaining system for improved performance. Vanguard was not u... |
https://en.wikipedia.org/wiki/Location%20transparency | In computer networks, location transparency is the use of names to identify network resources, rather than their actual location. For example, files are accessed by a unique file name, but the actual data is stored in physical sectors scattered around a disk in either the local computer or in a network. In a location t... |
https://en.wikipedia.org/wiki/Arbutus%20unedo | Arbutus unedo is an evergreen shrub or small tree in the family Ericaceae, native to the Mediterranean Basin and Western Europe. The tree is well known for its fruits, the arbutus berry, which bear some resemblance to the strawberry, hence the common name strawberry tree. However, it is not closely related to true stra... |
https://en.wikipedia.org/wiki/Weinberg%20angle | The weak mixing angle or Weinberg angle is a parameter in the Weinberg–Salam theory of the electroweak interaction, part of the Standard Model of particle physics, and is usually denoted as . It is the angle by which spontaneous symmetry breaking rotates the original and vector boson plane, producing as a result the ... |
https://en.wikipedia.org/wiki/Scanning%20tunneling%20spectroscopy | Scanning tunneling spectroscopy (STS), an extension of scanning tunneling microscopy (STM), is used to provide information about the density of electrons in a sample as a function of their energy.
In scanning tunneling microscopy, a metal tip is moved over a conducting sample without making physical contact. A bias v... |
https://en.wikipedia.org/wiki/Sales%20per%20unit%20area | In retail, sales per unit area is a standard and usually the primary measurement of store success. The unit of area is usually square metres in the metric system or square feet in U.S. customary units. Square feet are also widely used in retailing in the United Kingdom, but there are signs of a trend towards use of squ... |
https://en.wikipedia.org/wiki/Error%20catastrophe | Error catastrophe refers to the cumulative loss of genetic information in a lineage of organisms due to high mutation rates. The mutation rate above which error catastrophe occurs is called the error threshold. Both terms were coined by Manfred Eigen in his mathematical evolutionary theory of the quasispecies.
The ... |
https://en.wikipedia.org/wiki/EMachines%20eOne | The eOne is an all-in-one desktop computer that was produced by eMachines in 1999. It resembles Apple's "Bondi Blue" iMac.
Apple sued eMachines for allegedly infringing upon the distinctive trade dress of the iMac with the eOne. Apple and eMachines settled the case in 2000, which required the model to be discontinued.... |
https://en.wikipedia.org/wiki/Cleaning%20station | A cleaning station is a location where aquatic life congregate to be cleaned by smaller creatures. Such stations exist in both freshwater and marine environments, and are used by animals including fish, sea turtles and hippos, referred to as clients.
The cleaning process includes the removal of parasites from the anim... |
https://en.wikipedia.org/wiki/Amyloid-beta%20precursor%20protein | Amyloid-beta precursor protein (APP) is an integral membrane protein expressed in many tissues and concentrated in the synapses of neurons. It functions as a cell surface receptor and has been implicated as a regulator of synapse formation, neural plasticity, antimicrobial activity, and iron export. It is coded for by ... |
https://en.wikipedia.org/wiki/Interleukin%204 | The interleukin 4 (IL4, IL-4) is a cytokine that induces differentiation of naive helper T cells (Th0 cells) to Th2 cells. Upon activation by IL-4, Th2 cells subsequently produce additional IL-4 in a positive feedback loop. IL-4 is produced primarily by mast cells, Th2 cells, eosinophils and basophils. It is closely re... |
https://en.wikipedia.org/wiki/Van%20der%20Pol%20oscillator | In the study of dynamical systems, the van der Pol oscillator (named for Dutch physicist Balthasar van der Pol) is a non-conservative, oscillating system with non-linear damping. It evolves in time according to the second-order differential equation
where is the position coordinate—which is a function of the time —an... |
https://en.wikipedia.org/wiki/KRON-TV | KRON-TV (channel 4) is a television station licensed to San Francisco, California, United States, serving as the San Francisco Bay Area's outlet for The CW Television Network. The station also maintains a secondary affiliation with MyNetworkTV. Owned and operated by The CW's majority owner, Nexstar Media Group, KRON-TV... |
https://en.wikipedia.org/wiki/Geobiology | Geobiology is a field of scientific research that explores the interactions between the physical Earth and the biosphere. It is a relatively young field, and its borders are fluid. There is considerable overlap with the fields of ecology, evolutionary biology, microbiology, paleontology, and particularly soil science a... |
https://en.wikipedia.org/wiki/Szemer%C3%A9di%20regularity%20lemma | Szemerédi's regularity lemma is one of the most powerful tools in extremal graph theory, particularly in the study of large dense graphs. It states that the vertices of every large enough graph can be partitioned into a bounded number of parts so that the edges between different parts behave almost randomly.
According... |
https://en.wikipedia.org/wiki/Attitude%20change | Attitudes are associated beliefs and behaviors towards some object. They are not stable, and because of the communication and behavior of other people, are subject to change by social influences, as well as by the individual's motivation to maintain cognitive consistency when cognitive dissonance occurs—when two attitu... |
https://en.wikipedia.org/wiki/Tux%20Paint | Tux Paint is a free and open source raster graphics editor geared towards young children. The project was started in 2002 by Bill Kendrick who continues to maintain and improve it, with help from numerous volunteers. Tux Paint is seen by many as a free software alternative to Kid Pix, a similar proprietary educational ... |
https://en.wikipedia.org/wiki/Three-body%20force | A three-body force is a force that does not exist in a system of two objects but appears in a three-body system. In general, if the behaviour of a system of more than two objects cannot be described by the two-body interactions between all possible pairs, as a first approximation, the deviation is mainly due to a three... |
https://en.wikipedia.org/wiki/HCLTech | HCL Technologies Limited, d/b/a HCLTech (formerly Hindustan Computers Pvt. Limited), is an Indian multinational information technology (IT) services and consulting company headquartered in Noida. The founder of HCLTech is Shiv Nadar. It emerged as an independent company in 1991 when HCL entered into the software servic... |
https://en.wikipedia.org/wiki/Two-photon%20physics | Two-photon physics, also called gamma–gamma physics, is a branch of particle physics that describes the interactions between two photons. Normally, beams of light pass through each other unperturbed. Inside an optical material, and if the intensity of the beams is high enough, the beams may affect each other through a ... |
https://en.wikipedia.org/wiki/Bloom%20%28novel%29 | Bloom, written in 1998, is the fifth science fiction novel written by Wil McCarthy. It was first released as a hardcover in September 1998. Almost a year later, in August 1999, its first mass market edition was published. An ebook reprint was published in 2011.
Bloom is one of Borders' "Best 10 Books of 1998" and is... |
https://en.wikipedia.org/wiki/Multiresolution%20analysis | A multiresolution analysis (MRA) or multiscale approximation (MSA) is the design method of most of the practically relevant discrete wavelet transforms (DWT) and the justification for the algorithm of the fast wavelet transform (FWT). It was introduced in this context in 1988/89 by Stephane Mallat and Yves Meyer and ha... |
https://en.wikipedia.org/wiki/Euro%20calculator | A euro calculator is a type of calculator in European countries (see eurozone) that adopted the euro as their official monetary unit. It functions like any other normal calculator, but it also includes a special function which allows one to convert a value expressed in the previously official unit (the peseta in Spain,... |
https://en.wikipedia.org/wiki/Chasman%E2%80%93Green%20lattice | The Chasman–Green lattice, also known as a double bend achromat lattice (DBA lattice), is a special periodic arrangement of magnets designed by Renate Chasman and George Kenneth Green of Brookhaven National Laboratory in the mid-1970s for synchrotrons. This lattice provides optimized bending and focusing of electrons i... |
https://en.wikipedia.org/wiki/Content-addressable%20network | The content-addressable network (CAN) is a distributed, decentralized P2P infrastructure that provides hash table functionality on an Internet-like scale. CAN was one of the original four distributed hash table proposals, introduced concurrently with Chord, Pastry, and Tapestry.
Overview
Like other distributed hash t... |
https://en.wikipedia.org/wiki/History%20of%20general%20relativity | General relativity is a theory of gravitation that was developed by Albert Einstein between 1907 and 1915, with contributions by many others after 1915. According to general relativity, the observed gravitational attraction between masses results from the warping of space and time by those masses.
Before the advent of... |
https://en.wikipedia.org/wiki/Neosalvarsan | Neosalvarsan is a synthetic chemotherapeutic that is an organoarsenic compound. It became available in 1912 and superseded the more toxic and less water-soluble salvarsan as an effective treatment for syphilis. Because both of these arsenicals carried considerable risk of side effects, they were replaced for this i... |
https://en.wikipedia.org/wiki/Codan | Codan Limited is a manufacturer and supplier of communications, metal detection, and mining technology, headquartered in Adelaide, South Australia with revenue of A$348.0 million (2020).
Codan Limited is the communications business unit and the parent company of the Codan group, which is engaged in business through it... |
https://en.wikipedia.org/wiki/Boris%20Babayan | Boris Artashesovich Babayan (; ; born Baku, 20 December 1933) is a Soviet and Russian computer scientist of Armenian descent, notable as the pioneering creator of supercomputers in the former Soviet Union and Russia.
Biography
Babayan was born in Baku, Soviet Union to an Armenian family. He graduated from the Moscow ... |
https://en.wikipedia.org/wiki/Calculator%20input%20methods | There are various ways in which calculators interpret keystrokes. These can be categorized into two main types:
On a single-step or immediate-execution calculator, the user presses a key for each operation, calculating all the intermediate results, before the final value is shown.
On an expression or formula calculat... |
https://en.wikipedia.org/wiki/Jahn%E2%80%93Teller%20effect | The Jahn–Teller effect (JT effect or JTE) is an important mechanism of spontaneous symmetry breaking in molecular and solid-state systems which has far-reaching consequences in different fields, and is responsible for a variety of phenomena in spectroscopy, stereochemistry, crystal chemistry, molecular and solid-state ... |
https://en.wikipedia.org/wiki/ParaHox | The ParaHox gene cluster is an array of homeobox genes (involved in morphogenesis, the regulation of patterns of anatomical development) from the Gsx, Xlox (Pdx) and Cdx gene families.
Regulatory gene cluster
These genes were first shown to be arranged into a physically-linked chromosomal cluster in amphioxus, an inv... |
https://en.wikipedia.org/wiki/Whitney%20umbrella | In geometry, the Whitney umbrella (or Whitney's umbrella, named after American mathematician Hassler Whitney, and sometimes called a Cayley umbrella) is a specific self-intersecting ruled surface placed in three dimensions. It is the union of all straight lines that pass through points of a fixed parabola and are perp... |
https://en.wikipedia.org/wiki/Sigil%20of%20Baphomet | The Sigil of Baphomet is the official insignia of the Church of Satan, first appearing on the cover of The Satanic Mass album in 1968, and adorning the cover of The Satanic Bible the following year. The sigil has been called a "material pentagram" representational of carnality and earthy principles. The Church describe... |
https://en.wikipedia.org/wiki/Umbel | In botany, an umbel is an inflorescence that consists of a number of short flower stalks (called pedicels) that spread from a common point, somewhat like umbrella ribs. The word was coined in botanical usage in the 1590s, from Latin umbella "parasol, sunshade". The arrangement can vary from being flat-topped to almost ... |
https://en.wikipedia.org/wiki/Photoperiodism | Photoperiodism is the physiological reaction of organisms to the length of night or a dark period. It occurs in plants and animals. Plant photoperiodism can also be defined as the developmental responses of plants to the relative lengths of light and dark periods. They are classified under three groups according to the... |
https://en.wikipedia.org/wiki/SEAC%20%28computer%29 | SEAC (Standards Eastern Automatic Computer or Standards Electronic Automatic Computer) was a first-generation electronic computer, built in 1950 by the U.S. National Bureau of Standards (NBS) and was initially called the National Bureau of Standards Interim Computer, because it was a small-scale computer designed to b... |
https://en.wikipedia.org/wiki/Hilbert%27s%20twenty-first%20problem | The twenty-first problem of the 23 Hilbert problems, from the celebrated list put forth in 1900 by David Hilbert, concerns the existence of a certain class of linear differential equations with specified singular points and monodromic group.
Statement
The original problem was stated as follows (English translation fro... |
https://en.wikipedia.org/wiki/Quadrupole%20mass%20analyzer | In mass spectrometry, the quadrupole mass analyzer (or quadrupole mass filter) is a type of mass analyzer originally conceived by Nobel laureate Wolfgang Paul and his student Helmut Steinwedel. As the name implies, it consists of four cylindrical rods, set parallel to each other. In a quadrupole mass spectrometer (QMS)... |
https://en.wikipedia.org/wiki/SWAC%20%28computer%29 | The SWAC (Standards Western Automatic Computer) was an early electronic digital computer built in 1950 by the U.S. National Bureau of Standards (NBS) in Los Angeles, California. It was designed by Harry Huskey.
Overview
Like the SEAC which was built about the same time, the SWAC was a small-scale interim computer des... |
https://en.wikipedia.org/wiki/149%20%28number%29 | 149 (one hundred [and] forty-nine) is the natural number between 148 and 150.
In mathematics
149 is a prime number, the first prime whose difference from the previous prime is exactly 10, an emirp, and an irregular prime. After 1 and 127, it is the third smallest de Polignac number, an odd number that cannot be repres... |
https://en.wikipedia.org/wiki/Sagittaria | Sagittaria is a genus of about 30 species of aquatic plants whose members go by a variety of common names, including arrowhead, duck potato, swamp potato, tule potato, and wapato. Most are native to South, Central, and North America, but there are also some from Europe, Africa, and Asia.
Description
Sagittaria plant ... |
https://en.wikipedia.org/wiki/Hydrolyzed%20protein | Hydrolyzed protein is a solution derived from the hydrolysis of a protein into its component amino acids and peptides. While many means of achieving this exist, most common is prolonged heating with hydrochloric acid, sometimes with an enzyme such as pancreatic protease to simulate the naturally occurring hydrolytic pr... |
https://en.wikipedia.org/wiki/Beau%27s%20lines | Beau's lines are deep grooved lines that run from side to side on the fingernail or the toenail. They may look like indentations or ridges in the nail plate.
This condition of the nail was named by a French physician, Joseph Honoré Simon Beau (1806–1865), who first described it in 1846.
Signs and symptoms
Beau's ... |
https://en.wikipedia.org/wiki/Chloropicrin | Chloropicrin, also known as PS and nitrochloroform, is a chemical compound currently used as a broad-spectrum antimicrobial, fungicide, herbicide, insecticide, and nematicide. It was used as a poison gas in World War I. Its chemical structural formula is Cl3CNO2.
Synthesis
Chloropicrin was discovered in 1848 by Scotti... |
https://en.wikipedia.org/wiki/Statistical%20time-division%20multiplexing | Statistical multiplexing is a type of communication link sharing, very similar to dynamic bandwidth allocation (DBA). In statistical multiplexing, a communication channel is divided into an arbitrary number of variable bitrate digital channels or data streams. The link sharing is adapted to the instantaneous traffic de... |
https://en.wikipedia.org/wiki/Banks%E2%80%93Zaks%20fixed%20point | In quantum chromodynamics (and also N = 1 super quantum chromodynamics) with massless flavors, if the number of flavors, Nf, is sufficiently small (i.e. small enough to guarantee asymptotic freedom, depending on the number of colors), the theory can flow to an interacting conformal fixed point of the renormalization gr... |
https://en.wikipedia.org/wiki/Isotropic%20radiation | Isotropic radiation is radiation that has the same intensity regardless of the direction of measurement, such as would be found in a thermal cavity. This can be electromagnetic radiation, sound, or elementary particles.
Radiation |
https://en.wikipedia.org/wiki/Isotropic%20bands | In physiology, isotropic bands (better known as I bands) are the lighter bands of skeletal muscle cells (a.k.a. muscle fibers). Isotropic bands contain only actin-containing thin filaments.
The darker bands are called anisotropic bands (A bands). Together the I-bands and A-bands contribute to the striated appearance ... |
https://en.wikipedia.org/wiki/Passive%20infrared%20sensor | A passive infrared sensor (PIR sensor) is an electronic sensor that measures infrared (IR) light radiating from objects in its field of view. They are most often used in PIR-based motion detectors. PIR sensors are commonly used in security alarms and automatic lighting applications.
PIR sensors detect general moveme... |
https://en.wikipedia.org/wiki/Voluntary%20Human%20Extinction%20Movement | The Voluntary Human Extinction Movement (VHEMT) is an environmental movement that calls for all people to abstain from reproduction in order to cause the gradual voluntary extinction of humankind. VHEMT supports human extinction primarily because, in the group's view, it would prevent environmental degradation. The gro... |
https://en.wikipedia.org/wiki/Tuple%20space | A tuple space is an implementation of the associative memory paradigm for parallel/distributed computing. It provides a repository of tuples that can be accessed concurrently. As an illustrative example, consider that there are a group of processors that produce pieces of data and a group of processors that use the da... |
https://en.wikipedia.org/wiki/NetStumbler | NetStumbler (also known as Network Stumbler) was a tool for Windows that facilitates detection of Wireless LANs using the 802.11b, 802.11a and 802.11g WLAN standards. It runs on Microsoft Windows operating systems from Windows 2000 to Windows XP. A trimmed-down version called MiniStumbler is available for the handheld ... |
https://en.wikipedia.org/wiki/Gluon%20condensate | In quantum chromodynamics (QCD), the gluon condensate is a non-perturbative property of the QCD vacuum which could be partly responsible for giving masses to light mesons.
If the gluon field tensor is represented as Gμν, then the gluon condensate is the vacuum expectation value . It is not clear yet whether this conde... |
https://en.wikipedia.org/wiki/Allen%20Telescope%20Array | The Allen Telescope Array (ATA), formerly known as the One Hectare Telescope (1hT), is a radio telescope array dedicated to astronomical observations and a simultaneous search for extraterrestrial intelligence (SETI). The array is situated at the Hat Creek Radio Observatory in Shasta County, northeast of San Francisco... |
https://en.wikipedia.org/wiki/Bjerrum%20length | The Bjerrum length (after Danish chemist Niels Bjerrum 1879–1958 ) is the separation at which the electrostatic interaction between two elementary charges is comparable in magnitude to the thermal energy scale, , where is the Boltzmann constant and is the absolute temperature in kelvins. This length scale arises na... |
https://en.wikipedia.org/wiki/Red%20edge | Red edge refers to the region of rapid change in reflectance of vegetation in the near infrared range of the electromagnetic spectrum. Chlorophyll contained in vegetation absorbs most of the light in the visible part of the spectrum but becomes almost transparent at wavelengths greater than 700 nm. The cellular structu... |
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