source stringlengths 31 227 | text stringlengths 9 2k |
|---|---|
https://en.wikipedia.org/wiki/Benzalkonium%20chloride | Benzalkonium chloride (BZK, BKC, BAK, BAC), also known as alkyldimethylbenzylammonium chloride (ADBAC) and by the trade name Zephiran, is a type of cationic surfactant. It is an organic salt classified as a quaternary ammonium compound. ADBACs have three main categories of use: as a biocide, a cationic surfactant, and ... |
https://en.wikipedia.org/wiki/Rank%20theory%20of%20depression | Rank theory is an evolutionary theory of depression, developed by Anthony Stevens and John Price, and proposes that depression promotes the survival of genes. Depression is an adaptive response to losing status (rank) and losing confidence in the ability to regain it. The adaptive function of the depression is to chang... |
https://en.wikipedia.org/wiki/Chromium%20B.S.U. | Chromium B.S.U. is an arcade-style, top-scrolling space shooter available on Windows, iPhone, PSP, Mac, AmigaOS 4, Linux and numerous other UNIX-like operating systems. It is a free software distributed under the Clarified Artistic License. The original version of was designed in 2000 by Mark B. Allan and released und... |
https://en.wikipedia.org/wiki/Risch%20algorithm | In symbolic computation, the Risch algorithm is a method of indefinite integration used in some computer algebra systems to find antiderivatives. It is named after the American mathematician Robert Henry Risch, a specialist in computer algebra who developed it in 1968.
The algorithm transforms the problem of integrati... |
https://en.wikipedia.org/wiki/Spectral%20imaging | Spectral imaging is imaging that uses multiple bands across the electromagnetic spectrum. While an ordinary camera captures light across three wavelength bands in the visible spectrum, red, green, and blue (RGB), spectral imaging encompasses a wide variety of techniques that go beyond RGB. Spectral imaging may use th... |
https://en.wikipedia.org/wiki/Kerckhoff%20Marine%20Laboratory | The William G. Kerckhoff Marine Laboratory is owned and operated by the California Institute of Technology (Caltech). It is located 101 Dahlia Street, in the Corona del Mar district of Newport Beach, in Orange County, California.
History
The marine laboratory was established by biologist Thomas Hunt Morgan in 1928 to... |
https://en.wikipedia.org/wiki/Immunodeficiency%2026 | Immunodeficiency 26 is a rare genetic syndrome. It is characterised by absent circulating B and T cells and normal natural killer cells.
Signs and symptoms
The features of this condition include recurrent candidiasis and lower respiratory tract infections.
Genetics
This condition is due to mutations in the DNA-PKcs... |
https://en.wikipedia.org/wiki/Hub%20%28network%20science%29 | In network science, a hub is a node with a number of links that greatly exceeds the average. Emergence of hubs is a consequence of a scale-free property of networks. While hubs cannot be observed in a random network, they are expected to emerge in scale-free networks. The uprise of hubs in scale-free networks is associ... |
https://en.wikipedia.org/wiki/Learned%20medicine | Learned medicine is the European medical tradition in the Early Modern period, when it experienced the tension between the texts derived from ancient Greek medicine, particularly by followers of the teachings attributed to Hippocrates and those of Galen vs. the newer theories of natural philosophy spurred on by Renaiss... |
https://en.wikipedia.org/wiki/List%20of%20flags%20of%20Malta | The following is a list of flags of Malta.
National flags
Governmental flags
Military flags
Historical flags
Local Councils
Some flags had been used prior to the creation of local councils in 1993. The coats of arms of the local councils are officially recognised, however the flags are not and thus a number of var... |
https://en.wikipedia.org/wiki/Specialization%20%28pre%29order | In the branch of mathematics known as topology, the specialization (or canonical) preorder is a natural preorder on the set of the points of a topological space. For most spaces that are considered in practice, namely for all those that satisfy the T0 separation axiom, this preorder is even a partial order (called the ... |
https://en.wikipedia.org/wiki/Gangs%20Matrix | The Gangs Matrix, also known as the Gangs Violence Matrix, is a database of alleged street gang members created by the Metropolitan Police Service in 2012. It has been criticised for its use of circumstantial evidence and disproportionate targeting of young black men.
A 2018 investigation by the Information Commission... |
https://en.wikipedia.org/wiki/General%20relativity%20priority%20dispute | Albert Einstein presented the theories of special relativity and general relativity in publications that either contained no formal references to previous literature, or referred only to a small number of his predecessors for fundamental results on which he based his theories, most notably to the work of Henri Poincaré... |
https://en.wikipedia.org/wiki/Carcinogenic%20bacteria | Cancer bacteria are bacteria infectious organisms that are known or suspected to cause cancer. While cancer-associated bacteria have long been considered to be opportunistic (i.e., infecting healthy tissues after cancer has already established itself), there is some evidence that bacteria may be directly carcinogenic. ... |
https://en.wikipedia.org/wiki/Conceptual%20physics | Conceptual physics is an approach to teaching physics that focuses on the ideas of physics rather than the mathematics. It is believed that with a strong conceptual foundation in physics, students are better equipped to understand the equations and formulas of physics, and to make connections between the concepts of ph... |
https://en.wikipedia.org/wiki/Arcuate%20uterus | The arcuate uterus is a form of a uterine anomaly or variation where the uterine cavity displays a concave contour towards the fundus. Normally the uterine cavity is straight or convex towards the fundus on anterior-posterior imaging, but in the arcuate uterus the myometrium of the fundus dips into the cavity and may f... |
https://en.wikipedia.org/wiki/Transcriptional%20activator%20LAG-3 | In molecular biology, the transcriptional activator LAG-3 is a transcriptional activator protein. The C. elegans Notch pathway, involved in the control of growth, differentiation and patterning in animal development, relies on either of the receptors GLP-1 or LIN-12. Both these receptors promote signalling by the recru... |
https://en.wikipedia.org/wiki/Richard%20Lydekker | Richard Lydekker (; 25 July 1849 – 16 April 1915) was an English naturalist, geologist and writer of numerous books on natural history.
Biography
Richard Lydekker was born at Tavistock Square in London. His father was Gerard Wolfe Lydekker, a barrister-at-law with Dutch ancestry. The family moved to Harpenden Lodge so... |
https://en.wikipedia.org/wiki/Portogloboviridae | Portogloboviridae is a family of dsDNA viruses that infect archaea. It is a proposed family of the realm Varidnaviria, but ICTV officially puts it as incertae sedis virus. Viruses in the family are related to Helvetiavirae. The capsid proteins of these viruses and their characteristics are of evolutionary importance fo... |
https://en.wikipedia.org/wiki/Radiative%20equilibrium | Radiative equilibrium is the condition where the total thermal radiation leaving an object is equal to the total thermal radiation entering it. It is one of the several requirements for thermodynamic equilibrium, but it can occur in the absence of thermodynamic equilibrium. There are various types of radiative equilibr... |
https://en.wikipedia.org/wiki/Pacific%20Islands%20Ocean%20Observing%20System | The Pacific Islands Ocean Observing System (PacIOOS) is a nonprofit association and one of eleven such associations in the U.S. Integrated Ocean Observing System, funded in part by the National Oceanic and Atmospheric Administration (NOAA).
The PacIOOS area covers eight time zones, and 2300 individual islands associat... |
https://en.wikipedia.org/wiki/Leucine-rich%20repeats%20and%20death%20domain%20containing%201 | Leucine-rich repeats and death domain containing 1 is a protein that in humans is encoded by the LRRD1 gene. |
https://en.wikipedia.org/wiki/Orang-Outang%2C%20sive%20Homo%20Sylvestris | Orang-Outang, sive Homo Sylvestris: or, the Anatomy of a Pygmie Compared with that of a Monkey, an Ape, and a Man (1699) is a book by the British natural philosopher Edward Tyson. Regarded as a seminal work on anatomy, this volume led to Tyson being known as the father of comparative anatomy. The book characterizes in ... |
https://en.wikipedia.org/wiki/Financial%20network | A financial network is a concept describing any collection of financial entities (such as traders, firms, banks and financial exchanges) and the links between them, ideally through direct transactions or the ability to mediate a transaction. A common example of a financial network link is security holdings (e.g. stock ... |
https://en.wikipedia.org/wiki/Tachyons%20in%20fiction | The hypothetical particles tachyons have inspired many occurrences of in fiction. The use of the word in science fiction dates back at least to 1970 when James Blish's Star Trek novel Spock Must Die! incorporated tachyons into an ill-fated transporter experiment.
In general, tachyons are a standby mechanism upon whic... |
https://en.wikipedia.org/wiki/Exponential%20distribution | In probability theory and statistics, the exponential distribution or negative exponential distribution is the probability distribution of the time between events in a Poisson point process, i.e., a process in which events occur continuously and independently at a constant average rate. It is a particular case of the g... |
https://en.wikipedia.org/wiki/Journal%20of%20NeuroVirology | The Journal of NeuroVirology is a medical journal that publishes review articles on the molecular biology, immunology, genetics, epidemiology, and pathogenesis of CNS disorders with the goal of bridging the gap between basic and clinical studies, and enhancing translational research in neurovirology. It is published by... |
https://en.wikipedia.org/wiki/Perillaldehyde | Perillaldehyde, perillic aldehyde or perilla aldehyde, is a natural organic compound found most abundantly in the annual herb perilla, but also in a wide variety of other plants and essential oils. It is a monoterpenoid containing an aldehyde functional group.
Perillaldehyde, or volatile oils from perilla that are ri... |
https://en.wikipedia.org/wiki/Iterated%20filtering | Iterated filtering algorithms are a tool for maximum likelihood inference on partially observed dynamical systems. Stochastic perturbations to the unknown parameters are used to explore the parameter space. Applying sequential Monte Carlo (the particle filter) to this extended model results in the selection of the pa... |
https://en.wikipedia.org/wiki/Competition%20model | The Competition Model is a psycholinguistic theory of language acquisition and sentence processing, developed by Elizabeth Bates and Brian MacWhinney (1982). The claim in MacWhinney, Bates, and Kliegl (1984) is that "the forms of natural languages are created, governed, constrained, acquired, and used in the service o... |
https://en.wikipedia.org/wiki/Thymine | Thymine () (symbol T or Thy) is one of the four nucleobases in the nucleic acid of DNA that are represented by the letters G–C–A–T. The others are adenine, guanine, and cytosine. Thymine is also known as 5-methyluracil, a pyrimidine nucleobase. In RNA, thymine is replaced by the nucleobase uracil. Thymine was first i... |
https://en.wikipedia.org/wiki/G.9970 | G.9970 (also known as G.hnta) is a Recommendation developed by ITU-T that describes the generic transport architecture for home networks and their interfaces to a provider's access network.
G.9970 was developed by Study Group 15, Question 1. G.9970 received Consent on December 12, 2008 and was Approved on January 13, ... |
https://en.wikipedia.org/wiki/CalDriCon | CalDriCon is an electrical digital signaling interface that for high definition liquid crystal displays (LCDs) for high-definition televisions and mobile handsets. It was originally developed by THine Electronics, Inc.
Outline of CalDriCon
Clock separated point-to-point interface
Data rate up to 2.0 Gbit/s/lane
Cal... |
https://en.wikipedia.org/wiki/Bedding%20%28animals%29 | Bedding, in ethology and animal husbandry, is material, usually organic, used by animals to support their bodies when resting or otherwise stationary. It reduces pressure on skin, heat loss, and contamination by waste produced by an animal or those it shares living space with.
Types of bedding
Wood shavings (pine, c... |
https://en.wikipedia.org/wiki/Indiglo | Indiglo is a product feature on watches marketed by Timex, incorporating an electroluminescent panel as a backlight for even illumination of the watch dial.
The brand is owned by Indiglo Corporation, which is in turn solely owned by Timex, and the name derives from the word indigo, as the original watches featuring th... |
https://en.wikipedia.org/wiki/Disc%20Jam | Disc Jam is a video game for the PlayStation 4, Microsoft Windows and Nintendo Switch. Developed and published by High Horse Entertainment, it was one of the PlayStation Plus free games for download for the month of March 2017.
Gameplay
The game combines elements of air hockey and tennis in a manner similar to the gam... |
https://en.wikipedia.org/wiki/Bashir%20Rameev | Bashir Iskandarovich Rameev (; formerly "Rameyev" in English; 1 May 1918 – 16 May 1994) was a Soviet inventor and scientist, one of the founders of Soviet computing, author of 23 patents, including the first patent in the field of electronic computers officially registered in the USSR—a patent for the Automatic Electro... |
https://en.wikipedia.org/wiki/SK7MQ | SK7MQ also known as SK7RNQ B is a D-STAR Gateway enabled HAM repeater, located in Glumslöv, Landskrona Municipality, Sweden. It is set to transmit and receive on the UHF radio band.
It is currently held and maintained by its founder: Repeatergruppen SK7MQ, known as a part of "Österlens sändaramatörer".
History
SK7MQ... |
https://en.wikipedia.org/wiki/Sarcalumenin | Sarcalumenin is a protein that in humans is encoded by the SRL gene.
Sarcalumenin is a calcium-binding protein that can be found in the sarcoplasmic reticulum of striated muscle. Sarcalumenin is partially responsible for calcium buffering in the lumen of the sarcoplasmic reticulum and helps out calcium pump proteins. ... |
https://en.wikipedia.org/wiki/Dog%20behavior | Dog behavior is the internally coordinated responses of individuals or groups of domestic dogs to internal and external stimuli. It has been shaped by millennia of contact with humans and their lifestyles. As a result of this physical and social evolution, dogs have acquired the ability to understand and communicate ... |
https://en.wikipedia.org/wiki/Anchipteraspididae | Anchipteraspididae is an extinct family of heterostracan vertebrates restricted to Late Silurian and Early Devonian strata of Arctic Canada.
Anchipteraspidids superficially resemble the ancestral cyathaspidids, but, the articulation and growth patterns of the plates clearly define them as pteraspidids. |
https://en.wikipedia.org/wiki/Structured%20kNN | Structured k-Nearest Neighbours is a machine learning algorithm that generalizes the k-Nearest Neighbors (kNN) classifier.
Whereas the kNN classifier supports binary classification, multiclass classification and regression, the Structured kNN (SkNN) allows training of a classifier for general structured output labels.
... |
https://en.wikipedia.org/wiki/Photinia%20%C3%97%20fraseri | Photinia × fraseri, known as red tip photinia and Christmas berry, is a nothospecies in the rose family, Rosaceae. It is a hybrid between Photinia glabra and Photinia serratifolia.
Description
It is a compact shrub with an erect habit that can grow into a medium-sized tree. Its evergreen, oval leaves are dark green bu... |
https://en.wikipedia.org/wiki/Ugly%20duckling%20theorem | The ugly duckling theorem is an argument showing that classification is not really possible without some sort of bias. More particularly, it assumes finitely many properties combinable by logical connectives, and finitely many objects; it asserts that any two different objects share the same number of (extensional) pro... |
https://en.wikipedia.org/wiki/Sydney%20Brenner | Sydney Brenner (13 January 1927 – 5 April 2019) was a South African biologist. In 2002, he shared the Nobel Prize in Physiology or Medicine with H. Robert Horvitz and Sir John E. Sulston. Brenner made significant contributions to work on the genetic code, and other areas of molecular biology while working in the Medic... |
https://en.wikipedia.org/wiki/Zsigmondy%27s%20theorem | In number theory, Zsigmondy's theorem, named after Karl Zsigmondy, states that if are coprime integers, then for any integer , there is a prime number p (called a primitive prime divisor) that divides and does not divide for any positive integer , with the following exceptions:
, ; then which has no prime divisors... |
https://en.wikipedia.org/wiki/ThorCon%20nuclear%20reactor | The Thorcon nuclear reactor is a design of a molten salt reactor with a graphite moderator, proposed by the US-based Thorcon company. These nuclear reactors are designed as part of a floating power plant, to be manufactured on an assembly line in a shipyard, and to be delivered via barge to any ocean or major waterway ... |
https://en.wikipedia.org/wiki/Tethered%20particle%20motion | Tethered particle motion (TPM) is a biophysical method that is used for studying various polymers such as DNA and their interaction with other entities such as proteins.
The method allows observers to measure various physical properties on the substances, as well as to measure the properties of biochemical interactio... |
https://en.wikipedia.org/wiki/DNA-directed%20RNA%20interference | DNA detailed study
DNA-directed RNA interference (DRNAI) is a gene-silencing technique that utilizes DNA constructs to activate an animal cell's endogenous RNA interference (RNAI) pathways. DNA constructs are designed to express self-complementary double-stranded RNAs, typically short-hairpin RNAs, that bring about th... |
https://en.wikipedia.org/wiki/Eccentricity%20vector | In celestial mechanics, the eccentricity vector of a Kepler orbit is the dimensionless vector with direction pointing from apoapsis to periapsis and with magnitude equal to the orbit's scalar eccentricity. For Kepler orbits the eccentricity vector is a constant of motion. Its main use is in the analysis of almost circu... |
https://en.wikipedia.org/wiki/Product%20requirements%20document | A product requirements document (PRD) is a document containing all the requirements for a certain product.
It is written to allow people to understand what a product should do. A PRD should, however, generally avoid anticipating or defining how the product will do it in order to later allow interface designers and engi... |
https://en.wikipedia.org/wiki/Functional%20movement | Functional movements are movements based on real-world situational biomechanics. They usually involve multi-planar, multi-joint movements which place demand on the body's core musculature and innervation.
Functional vs other movements
Sports-specific
Sports-specific movements, such as a tennis swing or bowling a cr... |
https://en.wikipedia.org/wiki/Vision%20mixer | A vision mixer is a device used to select between several different live video sources and, in some cases, compositing live video sources together to create visual effects.
In most of the world, both the equipment and its operator are called a vision mixer or video mixer; however, in the United States, the equipment i... |
https://en.wikipedia.org/wiki/AstroPay | AstroPay is a global wallet that provides users with a way to pay, send, and receive money. AstroPay's app offers online payments, virtual and physical debit cards, peer-to-peer money transfers, and more.
The app offers more than 200 payment methods including Banco do Brasil, Caixa, Bradesco, Boleto, PhonePe, Airtel,... |
https://en.wikipedia.org/wiki/Ebola | Ebola, also known as Ebola virus disease (EVD) and Ebola hemorrhagic fever (EHF), is a viral hemorrhagic fever in humans and other primates, caused by ebolaviruses. Symptoms typically start anywhere between two days and three weeks after infection. The first symptoms are usually fever, sore throat, muscle pain, and hea... |
https://en.wikipedia.org/wiki/ISO%205426 | ISO 5426 ("Extension of the Latin alphabet coded character set for bibliographic information interchange") is a character set developed by ISO, similar to ISO/IEC 6937. It was first published in 1983.
Character set
ISO 5426-2
ISO 5426-2 ("Latin characters used in minor European languages and obsolete typography") is... |
https://en.wikipedia.org/wiki/OGSM | Objectives, goals, strategies and measures (OGSM) is a goal setting and action plan framework used in strategic planning. It is used by organizations, departments, teams and sometimes program managers to define and track measurable goals and actions to achieve an objective. Documenting your goals, strategies and actio... |
https://en.wikipedia.org/wiki/Maritime%20hydraulics%20in%20antiquity | With the issue of supplying water to a very large population, the Romans developed hydraulic systems for multiple applications: public water supply, power using water mills, hydraulic mining, fish tanks, irrigation, fire fighting, and of course aqueduct (Stein 2004). Scientists such as Ctesibius and Archimedes produced... |
https://en.wikipedia.org/wiki/Monad%20%28philosophy%29 | The term monad () is used in some cosmic philosophy and cosmogony to refer to a most basic or original substance. As originally conceived by the Pythagoreans, the Monad is the Supreme Being, divinity or the totality of all things. According to some philosophers of the early modern period, most notably Gottfried Wilhelm... |
https://en.wikipedia.org/wiki/Parapaleomerus | Parapaleomerus is a genus of strabopid of small size found in Chengjiang biota, China. It contains one species, P. sinensis. Unlike the other members of Strabopida, Parapaleomerus lacks dorsal eyes and only possesses ten trunk tergites. The telson has been described as trapezoidal. All the trunk tergites are straight a... |
https://en.wikipedia.org/wiki/Stefan%27s%20formula | In thermodynamics, Stefan's formula says that the specific surface energy at a given interface is determined by the respective enthalpy difference .
where σ is the specific surface energy, NA is the Avogadro constant, is a steric dimensionless coefficient, and Vm is the molar volume. |
https://en.wikipedia.org/wiki/Equivalents%20of%20the%20Axiom%20of%20Choice | Equivalents of the Axiom of Choice is a book in mathematics, collecting statements in mathematics that are true if and only if the axiom of choice holds. It was written by Herman Rubin and Jean E. Rubin, and published in 1963 by North-Holland as volume 34 of their Studies in Logic and the Foundations of Mathematics ser... |
https://en.wikipedia.org/wiki/Code%20page%201021 | Code page 1021 (CCSID 1021), also known as CP1021 or CH7DEC, is an IBM code page number assigned to the Swiss variant of DEC's National Replacement Character Set (NRCS). The 7-bit character set was introduced for DEC's computer terminal systems, starting with the VT200 series in 1983, but is also used by IBM for their ... |
https://en.wikipedia.org/wiki/Alpine%20steppe | The Alpine-steppe is a high altitude natural alpine grassland, which is a part of the Montane grasslands and shrublands biome.
Alpine-steppes are unique ecosystems found throughout the world, especially in Asia, where they make up 38.9% of the total Tibetan plateau grassland's area.
Characteristics
Alpine grasslands,... |
https://en.wikipedia.org/wiki/Haefliger%20structure | In mathematics, a Haefliger structure on a topological space is a generalization of a foliation of a manifold, introduced by André Haefliger in 1970. Any foliation on a manifold induces a special kind of Haefliger structure, which uniquely determines the foliation.
Definition
A codimension- Haefliger structure on a to... |
https://en.wikipedia.org/wiki/Non-virtual%20interface%20pattern | The non-virtual interface pattern (NVI) controls how methods in a base class are overridden. Such methods may be called by clients and overridable methods with core functionality. It is a pattern that is strongly related to the template method pattern. The NVI pattern recognizes the benefits of a non-abstract method in... |
https://en.wikipedia.org/wiki/Animal%20vaccination | Animal vaccination is the immunisation of a domestic, livestock or wild animal. The practice is connected to veterinary medicine. The first animal vaccine invented was for chicken cholera in 1879 by Louis Pasteur. The production of such vaccines encounter issues in relation to the economic difficulties of individuals, ... |
https://en.wikipedia.org/wiki/Cryptographic%20log%20on | Cryptographic log-on (CLO) is a process that uses Common Access Cards (CAC) and embedded Public Key Infrastructure (PKI) certificates to authenticate a user's identification to a workstation and network. It replaces the username and passwords for identifying and authenticating users. To log-on cryptographically to a ... |
https://en.wikipedia.org/wiki/Vibration%20of%20plates | The vibration of plates is a special case of the more general problem of mechanical vibrations. The equations governing the motion of plates are simpler than those for general three-dimensional objects because one of the dimensions of a plate is much smaller than the other two. This permits a two-dimensional plate th... |
https://en.wikipedia.org/wiki/Theoretical%20astronomy | Theoretical astronomy is the use of analytical and computational models based on principles from physics and chemistry to describe and explain astronomical objects and astronomical phenomena. Theorists in astronomy endeavor to create theoretical models and from the results predict observational consequences of those mo... |
https://en.wikipedia.org/wiki/Cantor%20space | In mathematics, a Cantor space, named for Georg Cantor, is a topological abstraction of the classical Cantor set: a topological space is a Cantor space if it is homeomorphic to the Cantor set. In set theory, the topological space 2ω is called "the" Cantor space.
Examples
The Cantor set itself is a Cantor space. But... |
https://en.wikipedia.org/wiki/Seto%20Kaiba | is a fictional character in the manga Yu-Gi-Oh! by Kazuki Takahashi. As the majority shareholder and CEO of his own multi-national gaming company, Kaiba Corporation, Kaiba is reputed to be Japan's greatest gamer and aims to become the world's greatest player of the American card game, Duel Monsters (Magic & Wizards in ... |
https://en.wikipedia.org/wiki/Barshop%20Institute | The Barshop Institute for Longevity and Aging Studies is a basic and clinical research institute located on the Texas Research Park Campus of the University of Texas Health Science Center at San Antonio (UTHSCSA). It is a leading institute in the United States in geriatrics research. The Barshop Institute ranks #1 in N... |
https://en.wikipedia.org/wiki/Hard%E2%80%93easy%20effect | The hard–easy effect is a cognitive bias that manifests itself as a tendency to overestimate the probability of one's success at a task perceived as hard, and to underestimate the likelihood of one's success at a task perceived as easy. The hard-easy effect takes place, for example, when individuals exhibit a degree of... |
https://en.wikipedia.org/wiki/Ethenium | In chemistry, ethenium, protonated ethylene or ethyl cation is a positive ion with the formula . It can be viewed as a molecule of ethylene () with one added proton (), or a molecule of ethane () minus one hydride ion (). It is a carbocation; more specifically, a nonclassical carbocation.
Preparation
Ethenium has been... |
https://en.wikipedia.org/wiki/Bulk%20synchronous%20parallel | The bulk synchronous parallel (BSP) abstract computer is a bridging model for designing parallel algorithms. It is similar to the parallel random access machine (PRAM) model, but unlike PRAM, BSP does not take communication and synchronization for granted. In fact, quantifying the requisite synchronization and communi... |
https://en.wikipedia.org/wiki/Input%20Field%20Separators | For many command line interpreters (“shell”) of Unix operating systems, the input field separators or internal field separators or shell variable holds characters used to separate text into tokens.
The value of , (in the bash shell) typically includes the space, tab, and the newline characters by default. These white... |
https://en.wikipedia.org/wiki/Iatrophysics | Iatrophysics or iatromechanics (fr. Greek) is the medical application of physics. It provides an explanation for medical practices with mechanical principles. It was a school of medicine in the seventeenth century which attempted to explain physiological phenomena in mechanical terms. Believers of iatromechanics though... |
https://en.wikipedia.org/wiki/N%C3%A9ron%E2%80%93Severi%20group | In algebraic geometry, the Néron–Severi group of a variety is
the group of divisors modulo algebraic equivalence; in other words it is the group of components of the Picard scheme of a variety. Its rank is called the Picard number. It is named after Francesco Severi and André Néron.
Definition
In the cases of most i... |
https://en.wikipedia.org/wiki/Trace%20zero%20cryptography | In 1998 Gerhard Frey firstly proposed using trace zero varieties for cryptographic purpose. These varieties are subgroups of the divisor class group on a low genus hyperelliptic curve defined over a finite field. These groups can be used to establish asymmetric cryptography using the discrete logarithm problem as crypt... |
https://en.wikipedia.org/wiki/Phage-ligand%20technology | The Phage-ligand technology is a technology to detect, bind and remove bacteria and bacterial toxins by using highly specific bacteriophage derived proteins.
Origins
The host recognition of bacteriophages occur via bacteria-binding proteins that have strong binding affinities to specific protein or carbohydrate struct... |
https://en.wikipedia.org/wiki/MacScan | MacScan is anti-malware software for macOS developed by SecureMac.
Features
SecureMac runs on Apple macOS. It scans for and removes malware (including spyware, Trojan horses, keystroke loggers, and tracking cookies). It also scans for remote administration programs, like Apple Remote Desktop, allowing users to verify ... |
https://en.wikipedia.org/wiki/Structured%20Stream%20Transport | In computer networking, Structured Stream Transport (SST) is an experimental transport protocol that provides an ordered, reliable byte stream abstraction similar to TCP's, but enhances and optimizes stream management to permit applications to use streams in a much more fine-grained fashion than is feasible with TCP st... |
https://en.wikipedia.org/wiki/Organizing%20center | Organizing center may refer to:
Microtubule organizing center
Spemann's Organizer
Certain groups of cells in mesoderm formation, see FGF and mesoderm formation
Primitive streak in Amniotes responsible for gastrulation
a small cell group underneath the stem cells in Arabidopsis and other plants
animal cap cells treated... |
https://en.wikipedia.org/wiki/Program%20status%20word | The program status word (PSW) is a register that performs the function of a status register and program counter, and sometimes more. The term is also applied to a copy of the PSW in storage. This article only discusses the PSW in the IBM System/360 and its successors, and follows the IBM convention of numbering bits ... |
https://en.wikipedia.org/wiki/RC%20oscillator | Linear electronic oscillator circuits, which generate a sinusoidal output signal, are composed of an amplifier and a frequency selective element, a filter. A linear oscillator circuit which uses an RC network, a combination of resistors and capacitors, for its frequency selective part is called an RC oscillator.
Des... |
https://en.wikipedia.org/wiki/Helium%20flash | A helium flash is a very brief thermal runaway nuclear fusion of large quantities of helium into carbon through the triple-alpha process in the core of low mass stars (between 0.8 solar masses () and 2.0 ) during their red giant phase (the Sun is predicted to experience a flash 1.2 billion years after it leaves the mai... |
https://en.wikipedia.org/wiki/Homological%20conjectures%20in%20commutative%20algebra | In mathematics, homological conjectures have been a focus of research activity in commutative algebra since the early 1960s. They concern a number of interrelated (sometimes surprisingly so) conjectures relating various homological properties of a commutative ring to its internal ring structure, particularly its Krull ... |
https://en.wikipedia.org/wiki/SAT%20Subject%20Test%20in%20Mathematics%20Level%202 | In the U.S., the SAT Subject Test in Mathematics Level 2 (formerly known as Math II or Math IIChest, the "C" representing chest) was a one-hour multiple choice test. The questions covered a broad range of topics. Approximately 10-14% of questions focused on numbers and operations, 48-52% focused on algebra and functio... |
https://en.wikipedia.org/wiki/Apache%20Apex | Apache Apex is a YARN-native platform that unifies stream and batch processing. It processes big data-in-motion in a way that is scalable, performant, fault-tolerant, stateful, secure, distributed, and easily operable.
Apache Apex was named a top-level project by The Apache Software Foundation on April 25, 2016. As o... |
https://en.wikipedia.org/wiki/Female%20intrasexual%20competition | Female intrasexual competition is competition between women over a potential mate. Such competition might include self-promotion, derogation of other women, and direct and indirect aggression toward other women. Factors that influence female intrasexual competition include the genetic quality of available mates, hormon... |
https://en.wikipedia.org/wiki/Perl%20Compatible%20Regular%20Expressions | Perl Compatible Regular Expressions (PCRE) is a library written in C, which implements a regular expression engine, inspired by the capabilities of the Perl programming language. Philip Hazel started writing PCRE in summer 1997. PCRE's syntax is much more powerful and flexible than either of the POSIX regular expressio... |
https://en.wikipedia.org/wiki/Uninitialized%20variable | In computing, an uninitialized variable is a variable that is declared but is not set to a definite known value before it is used. It will have some value, but not a predictable one. As such, it is a programming error and a common source of bugs in software.
Example of the C language
A common assumption made by novic... |
https://en.wikipedia.org/wiki/Sparky%20the%20Sun%20Devil | Sparky the Sun Devil is the official mascot of Arizona State University. Originally the ASU athletic teams' mascot was an owl, then became a "Normal" (because ASU was founded as a normal school). It was later changed to a bulldog in an attempt to make the school – Arizona State Teacher's College at the time – appear mo... |
https://en.wikipedia.org/wiki/Flexor%20hallucis%20brevis%20muscle | Flexor hallucis brevis muscle is a muscle of the foot that flexes the big toe.
Structure
Flexor hallucis brevis muscle arises, by a pointed tendinous process, from the medial part of the under surface of the cuboid bone, from the contiguous portion of the third cuneiform, and from the prolongation of the tendon of th... |
https://en.wikipedia.org/wiki/Nutrient%20cycling%20in%20the%20Columbia%20River%20Basin | Nutrient cycling in the Columbia River Basin involves the transport of nutrients through the system, as well as transformations from among dissolved, solid, and gaseous phases, depending on the element. The elements that constitute important nutrient cycles include macronutrients such as nitrogen (as ammonium, nitrite,... |
https://en.wikipedia.org/wiki/Mason%20equation | The Mason equation is an approximate analytical expression for the growth (due to condensation) or evaporation of a water droplet—it is due to the meteorologist B. J. Mason. The expression is found by recognising that mass diffusion towards the water drop in a supersaturated environment transports energy as latent heat... |
https://en.wikipedia.org/wiki/Electronic%20skin | Electronic skin refers to flexible, stretchable and self-healing electronics that are able to mimic functionalities of human or animal skin. The broad class of materials often contain sensing abilities that are intended to reproduce the capabilities of human skin to respond to environmental factors such as changes in h... |
https://en.wikipedia.org/wiki/Hans%20Hermes | Hans Hermes (; 12 February 1912 – 10 November 2003) was a German mathematician and logician, who made significant contributions to the foundations of mathematical logic.
Personal life
Hermes was born in Neunkirchen. From 1931, he studied mathematics, physics, chemistry, biology and philosophy at the University of Frei... |
https://en.wikipedia.org/wiki/Lens%20regeneration | The regeneration of the lens of the eye has been studied, mostly in amphibians and rabbits, from the 18th century. In the 21st century, an experimental medical trial has been performed in humans as this is a promising technique for treating cataracts, especially in children.
History
In 1781, Charles Bonnet found that... |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.