id int64 39 79M | url stringlengths 31 227 | text stringlengths 6 334k | source stringlengths 1 150 ⌀ | categories listlengths 1 6 | token_count int64 3 71.8k | subcategories listlengths 0 30 |
|---|---|---|---|---|---|---|
49,497 | https://en.wikipedia.org/wiki/Pascal%27s%20triangle | In mathematics, Pascal's triangle is an infinite triangular array of the binomial coefficients which play a crucial role in probability theory, combinatorics, and algebra. In much of the Western world, it is named after the French mathematician Blaise Pascal, although other mathematicians studied it centuries before hi... | Pascal's triangle | [
"Mathematics"
] | 6,096 | [
"Factorial and binomial topics",
"Triangles of numbers",
"Combinatorics"
] |
49,503 | https://en.wikipedia.org/wiki/Inductively%20coupled%20plasma%20mass%20spectrometry | Inductively coupled plasma mass spectrometry (ICP-MS) is a type of mass spectrometry that uses an inductively coupled plasma to ionize the sample. It atomizes the sample and creates atomic and small polyatomic ions, which are then detected. It is known and used for its ability to detect metals and several non-metals in... | Inductively coupled plasma mass spectrometry | [
"Physics",
"Chemistry"
] | 7,365 | [
"Spectrum (physical sciences)",
"Instrumental analysis",
"Mass",
"Mass spectrometry",
"nan",
"Matter"
] |
49,535 | https://en.wikipedia.org/wiki/Thought%20experiment | A thought experiment is a hypothetical situation in which a hypothesis, theory, or principle is laid out for the purpose of thinking through its consequences. The concept is also referred to using the German-language term within the work of the physicist Ernst Mach and includes thoughts about what may have occurred if... | Thought experiment | [
"Technology"
] | 6,450 | [
"History of science",
"History of science and technology"
] |
49,557 | https://en.wikipedia.org/wiki/Castle | A castle is a type of fortified structure built during the Middle Ages predominantly by the nobility or royalty and by military orders. Scholars usually consider a castle to be the private fortified residence of a lord or noble. This is distinct from a mansion, palace, and villa, whose main purpose was exclusively for ... | Castle | [
"Engineering"
] | 12,873 | [
"Construction",
"Masonry"
] |
49,569 | https://en.wikipedia.org/wiki/Bayes%27%20theorem | Bayes' theorem (alternatively Bayes' law or Bayes' rule, after Thomas Bayes) gives a mathematical rule for inverting conditional probabilities, allowing one to find the probability of a cause given its effect. For example, if the risk of developing health problems is known to increase with age, Bayes' theorem allows th... | Bayes' theorem | [
"Mathematics"
] | 5,420 | [
"Mathematical problems",
"Theorems in probability theory",
"Mathematical theorems",
"Theorems in statistics"
] |
7,183,054 | https://en.wikipedia.org/wiki/Norilsk%20Nickel | Norilsk Nickel (), or Nornickel, is a Russian nickel and palladium mining and smelting company. Its largest operations are located in the Norilsk–Talnakh area near the Yenisei River in the north of Siberia. It also has holdings in Nikel, Zapolyarny, and Monchegorsk on the Kola Peninsula, in Harjavalta in western Finlan... | Norilsk Nickel | [
"Chemistry"
] | 5,531 | [
"Metallurgical industry of Russia",
"Metallurgical industry by country"
] |
7,183,233 | https://en.wikipedia.org/wiki/Excessive%20daytime%20sleepiness | Excessive daytime sleepiness (EDS) is characterized by persistent sleepiness and often a general lack of energy, even during the day after apparently adequate or even prolonged nighttime sleep. EDS can be considered as a broad condition encompassing several sleep disorders where increased sleep is a symptom, or as a sy... | Excessive daytime sleepiness | [
"Biology"
] | 1,070 | [
"Behavior",
"Sleep",
"Sleep disorders"
] |
7,183,468 | https://en.wikipedia.org/wiki/Viodentia | viodentia (sometimes written with an uppercase v) is a pseudonym used by the creator of FairUse4WM, a program that removes Microsoft's copy protection technology from Windows Media Video (".WMV") files. These files are used by popular music download sites such as Rhapsody, Yahoo! Music, and Napster.
Background
A nu... | Viodentia | [
"Technology"
] | 504 | [
"Multimedia",
"Multimedia software"
] |
7,183,778 | https://en.wikipedia.org/wiki/Wide%20chord | Wide chord describes the fan blades on certain turbofan engines that have a blade design with a specific geometry - In layman's terms, they would be described as having wider blades than other jet engines. The technology was pioneered by Geoff Wilde at Rolls-Royce in the 1970s.
Overview
The main fan on a jet engine c... | Wide chord | [
"Technology"
] | 391 | [
"Jet engines",
"Engines"
] |
7,184,741 | https://en.wikipedia.org/wiki/Disk%27O | The Disk'O (also known as Skater or Surf's Up) is a type of flat ride manufactured by Zamperla of Italy. The ride is a larger version of a Rockin' Tug, also manufactured by Zamperla.
Versions
Ride
On a traditional Disk'O, Mega Disk'O or Disk'O Coaster, riders sit on a circular platform with outward-facing seats. On a... | Disk'O | [
"Physics",
"Technology"
] | 183 | [
"Physical systems",
"Machines",
"Amusement rides"
] |
7,184,831 | https://en.wikipedia.org/wiki/Primary%20pseudoperfect%20number | In mathematics, and particularly in number theory, N is a primary pseudoperfect number if it satisfies the Egyptian fraction equation
where the sum is over only the prime divisors of N.
Properties
Equivalently, N is a primary pseudoperfect number if it satisfies
Except for the primary pseudoperfect number N = 2, th... | Primary pseudoperfect number | [
"Mathematics"
] | 588 | [
"Sequences and series",
"Integer sequences",
"Mathematical structures",
"Recreational mathematics",
"Mathematical objects",
"Combinatorics",
"Numbers",
"Number theory"
] |
7,185,031 | https://en.wikipedia.org/wiki/Trestolone | Trestolone, also known as 7α-methyl-19-nortestosterone (MENT), is an experimental androgen/anabolic steroid (AAS) and progestogen medication which has been under development for potential use as a form of hormonal birth control for men and in androgen replacement therapy for low testosterone levels in men but has never... | Trestolone | [
"Chemistry"
] | 1,603 | [
"Ketones",
"Functional groups",
"Drug safety",
"Abandoned drugs"
] |
7,185,405 | https://en.wikipedia.org/wiki/Cahen%27s%20constant | In mathematics, Cahen's constant is defined as the value of an infinite series of unit fractions with alternating signs:
Here denotes Sylvester's sequence, which is defined recursively by
Combining these fractions in pairs leads to an alternative expansion of Cahen's constant as a series of positive unit fractions... | Cahen's constant | [
"Mathematics"
] | 499 | [
"Mathematical constants",
"Mathematical objects",
"Numbers",
"nan"
] |
7,185,428 | https://en.wikipedia.org/wiki/Random%20dynamical%20system | In the mathematical field of dynamical systems, a random dynamical system is a dynamical system in which the equations of motion have an element of randomness to them. Random dynamical systems are characterized by a state space S, a set of maps from S into itself that can be thought of as the set of all possible equat... | Random dynamical system | [
"Mathematics"
] | 1,114 | [
"Random dynamical systems",
"Dynamical systems"
] |
7,185,509 | https://en.wikipedia.org/wiki/Category%20of%20finite-dimensional%20Hilbert%20spaces | In mathematics, the category FdHilb has all finite-dimensional Hilbert spaces for objects and the linear transformations between them as morphisms. Whereas the theory described by the normal category of Hilbert spaces, Hilb, is ordinary quantum mechanics, the corresponding theory on finite dimensional Hilbert spaces is... | Category of finite-dimensional Hilbert spaces | [
"Physics",
"Mathematics"
] | 146 | [
"Mathematical structures",
"Category theory stubs",
"Hilbert spaces",
"Monoidal categories",
"Quantum mechanics",
"Category theory",
"Categories in category theory",
"Dagger categories"
] |
7,185,671 | https://en.wikipedia.org/wiki/Uniformly%20Cauchy%20sequence | In mathematics, a sequence of functions from a set S to a metric space M is said to be uniformly Cauchy if:
For all , there exists such that for all : whenever .
Another way of saying this is that as , where the uniform distance between two functions is defined by
Convergence criteria
A sequence of functions ... | Uniformly Cauchy sequence | [
"Mathematics"
] | 337 | [
"Sequences and series",
"Functions and mappings",
"Convergence (mathematics)",
"Mathematical structures",
"Functional analysis",
"Mathematical analysis",
"Mathematical analysis stubs",
"Mathematical objects",
"Mathematical relations"
] |
7,186,101 | https://en.wikipedia.org/wiki/The%20Foretelling | "The Foretelling" is the first episode of the BBC sitcom The Black Adder, the first series of the long-running comedy programme Blackadder. It marks Rowan Atkinson's debut as the character Edmund Blackadder, and is the first appearance of the recurring characters Baldrick (Tony Robinson) and Percy (Tim McInnerny). The ... | The Foretelling | [
"Astronomy"
] | 2,135 | [
"Cultural depictions of astronomers",
"Cultural depictions of Nicolaus Copernicus"
] |
7,186,253 | https://en.wikipedia.org/wiki/Extended%20precision | Extended precision refers to floating-point number formats that provide greater precision than the basic floating-point formats. Extended-precision formats support a basic format by minimizing roundoff and overflow errors in intermediate values of expressions on the base format. In contrast to extended precision, arbi... | Extended precision | [
"Mathematics"
] | 4,676 | [
"Computer arithmetic",
"Arithmetic"
] |
7,186,519 | https://en.wikipedia.org/wiki/Hypothetical%20astronomical%20object | Various unknown astronomical objects have been hypothesized throughout recorded history. For example, in the 5th century BCE, the philosopher Philolaus defined a hypothetical astronomical object which he called the "Central Fire", around which he proposed other celestial bodies (including the Sun) moved.
Types of hypo... | Hypothetical astronomical object | [
"Astronomy"
] | 222 | [
"Astronomical hypotheses",
"Hypothetical astronomical objects",
"Astronomical objects",
"Astronomical myths"
] |
7,186,647 | https://en.wikipedia.org/wiki/Facet%20%28geometry%29 | In geometry, a facet is a feature of a polyhedron, polytope, or related geometric structure, generally of dimension one less than the structure itself. More specifically:
In three-dimensional geometry, a facet of a polyhedron is any polygon whose corners are vertices of the polyhedron, and is not a face. To facet a po... | Facet (geometry) | [
"Mathematics"
] | 237 | [
"Polyhedral combinatorics",
"Combinatorics"
] |
7,186,688 | https://en.wikipedia.org/wiki/Trestolone%20acetate | Trestolone acetate (; developmental code names CDB-903, NSC-69948, U-15614; also known as 7α-methyl-19-nortestosterone 17β-acetate (MENT acetate) and 7α-methylestr-4-en-17β-ol-3-one 17β-acetate) is a synthetic and injected anabolic–androgenic steroid (AAS) and a derivative of nandrolone (19-nortestosterone) which was n... | Trestolone acetate | [
"Chemistry"
] | 213 | [
"Ketones",
"Functional groups",
"Drug safety",
"Abandoned drugs"
] |
7,187,296 | https://en.wikipedia.org/wiki/Space%20Integrated%20GPS/INS | Space Integrated GPS/INS (SIGI) is a strapdown Inertial Navigation Unit (INU) developed and built by Honeywell International to control and stabilize spacecraft during flight.
SIGI has integrated global positioning and inertial navigation technology to provide three navigation solutions : Pure inertial, GPS-only and b... | Space Integrated GPS/INS | [
"Astronomy",
"Technology",
"Engineering"
] | 178 | [
"Spacecraft communication",
"Spacecraft stubs",
"Avionics",
"Astronomy stubs",
"Aircraft instruments",
"Aerospace engineering"
] |
7,187,555 | https://en.wikipedia.org/wiki/Gammasphere | The Gammasphere is a third generation gamma ray spectrometer used to study rare and exotic nuclear physics. It consists of 110 Compton-suppressed large volume, high-purity germanium detectors arranged in a spherical shell.
Gammasphere has been used to perform a variety of experiments in nuclear physics. Most experimen... | Gammasphere | [
"Physics",
"Chemistry"
] | 262 | [
"Spectrometers",
"Spectroscopy",
"Spectrum (physical sciences)"
] |
7,188,879 | https://en.wikipedia.org/wiki/Immortal%20DNA%20strand%20hypothesis | The immortal DNA strand hypothesis was proposed in 1975 by John Cairns as a mechanism for adult stem cells to minimize mutations in their genomes. This hypothesis proposes that instead of segregating their DNA during mitosis in a random manner, adult stem cells divide their DNA asymmetrically, and retain a distinct tem... | Immortal DNA strand hypothesis | [
"Biology"
] | 2,156 | [
"Behavior",
"Cell biology",
"Developmental biology",
"Reproduction"
] |
7,189,098 | https://en.wikipedia.org/wiki/Bordeaux%20Segalen%20University | Bordeaux Segalen University (; originally called University of Victor Segalen Bordeaux II) was one of four universities in Bordeaux (together with Bordeaux 1, Michel de Montaigne Bordeaux 3 and Montesquieu Bordeaux 4). In 2014, it merged with Bordeaux 1 and Bordeaux 4 to form University of Bordeaux.
Bordeaux Segalen w... | Bordeaux Segalen University | [
"Astronomy"
] | 479 | [
"Outer space stubs",
"Outer space",
"Astronomy stubs"
] |
7,189,249 | https://en.wikipedia.org/wiki/Benzethonium%20chloride | Benzethonium chloride, also known as hyamine is a synthetic quaternary ammonium salt. This compound is an odorless white solid, soluble in water. It has surfactant, antiseptic, and anti-infective properties and it is used as a topical antimicrobial agent in first aid antiseptics. It is also found in cosmetics and toil... | Benzethonium chloride | [
"Chemistry"
] | 839 | [
"Chlorides",
"Inorganic compounds",
"Salts"
] |
7,189,344 | https://en.wikipedia.org/wiki/Populus%20trichocarpa | Populus trichocarpa, the black cottonwood, western balsam-poplar or California poplar, is a deciduous broadleaf tree species native to western North America. It is used for timber, and is notable as a model organism in plant biology.
Description
It is a large tree, growing to a height of and a trunk diameter over ... | Populus trichocarpa | [
"Biology"
] | 2,676 | [
"Model organisms",
"Plant models"
] |
7,189,385 | https://en.wikipedia.org/wiki/Tacit%20collusion | Tacit collusion is a collusion between competitors who do not explicitly exchange information but achieve an agreement about coordination of conduct. There are two types of tacit collusion: concerted action and conscious parallelism. In a concerted action also known as concerted activity, competitors exchange some info... | Tacit collusion | [
"Mathematics"
] | 1,817 | [
"Game theory"
] |
7,189,398 | https://en.wikipedia.org/wiki/Chipcom | Chipcom Corporation was an early pioneering company in the Ethernet hub industry. Their products allowed Local Networks to be aggregated in a single place instead of being distributed across the length of a single coaxial cable. They competed with now-gone companies such as Cabletron Systems, SynOptics, Ungermann-Bass... | Chipcom | [
"Technology"
] | 241 | [
"Computing stubs",
"Computer network stubs"
] |
7,189,698 | https://en.wikipedia.org/wiki/Arp%20240 | Arp 240 is a pair of interacting spiral galaxies located in the constellation Virgo. The two galaxies are listed together as Arp 240 in the Atlas of Peculiar Galaxies. The galaxy on the right is known as NGC 5257, while the galaxy on the left is known as NGC 5258. Both galaxies are distorted by the gravitational intera... | Arp 240 | [
"Astronomy"
] | 146 | [
"Virgo (constellation)",
"Constellations"
] |
7,189,886 | https://en.wikipedia.org/wiki/Optimal%20stopping | In mathematics, the theory of optimal stopping or early stopping is concerned with the problem of choosing a time to take a particular action, in order to maximise an expected reward or minimise an expected cost. Optimal stopping problems can be found in areas of statistics, economics, and mathematical finance (related... | Optimal stopping | [
"Mathematics"
] | 1,556 | [
"Applied mathematics",
"Mathematical finance"
] |
7,190,681 | https://en.wikipedia.org/wiki/PPS.tv | PPS.tv (PPStream) is a Chinese peer-to-peer streaming video network software. Since the target users are on the Chinese mainland, there is no official English version, and the vast majority of channels are from East Asia, mostly Mainland China, Japan, South Korea, Hong Kong, Taiwan, Malaysia, and Singapore. Programmes ... | PPS.tv | [
"Technology"
] | 335 | [
"Multimedia",
"Streaming television"
] |
7,190,735 | https://en.wikipedia.org/wiki/Verdier%20duality | In mathematics, Verdier duality is a cohomological duality in algebraic topology that generalizes Poincaré duality for manifolds. Verdier duality was introduced in 1965 by as an analog for locally compact topological spaces of
Alexander Grothendieck's theory of
Poincaré duality in étale cohomology
for schemes in alge... | Verdier duality | [
"Physics",
"Mathematics"
] | 1,007 | [
"Mathematical structures",
"Sheaf theory",
"Topology",
"Space",
"Duality theories",
"Geometry",
"Category theory",
"Fields of abstract algebra",
"Spacetime",
"Homological algebra"
] |
7,190,885 | https://en.wikipedia.org/wiki/Four-dimensionalism | In philosophy, four-dimensionalism (also known as the doctrine of temporal parts) is the ontological position that an object's persistence through time is like its extension through space. Thus, an object that exists in time has temporal parts in the various subregions of the total region of time it occupies, just like... | Four-dimensionalism | [
"Physics",
"Mathematics"
] | 2,016 | [
"Philosophy of physics",
"Applied and interdisciplinary physics",
"Vector spaces",
"Space (mathematics)",
"Theory of relativity",
"Spacetime"
] |
7,191,018 | https://en.wikipedia.org/wiki/Intel%20Paragon | The Intel Paragon is a discontinued series of massively parallel supercomputers that was produced by Intel in the 1990s. The Paragon XP/S is a productized version of the experimental Touchstone Delta system that was built at Caltech, launched in 1992. The Paragon superseded Intel's earlier iPSC/860 system, to which it ... | Intel Paragon | [
"Technology"
] | 595 | [
"Supercomputers",
"Supercomputing"
] |
7,191,551 | https://en.wikipedia.org/wiki/Promegakaryocyte | A promegakaryocyte is a precursor cell for a megakaryocyte, the development of which proceeds as follows:
CFU-Meg (hematopoietic stem cell/hemocytoblast) → megakaryoblast → promegakaryocyte → megakaryocyte
Promegakaryocytes and other precursor cells to megakaryocytes arise from pluripotential hematopoietic progenitors... | Promegakaryocyte | [
"Biology"
] | 336 | [
"Immune system",
"Organ systems"
] |
7,191,630 | https://en.wikipedia.org/wiki/Promonocyte | A promonocyte (or premonocyte) is a cell arising from a monoblast and developing into a monocyte.
See also
Pluripotential hemopoietic stem cell
Additional images
External links
"Monocyte Development" at tulane.edu
Slide at marist.edu
- "Bone marrow smear"
"Maturation Sequence" at hematologyatlas.com (Promono... | Promonocyte | [
"Biology"
] | 100 | [
"Immune system",
"Organ systems"
] |
7,191,704 | https://en.wikipedia.org/wiki/Cryo | Cryo- is from the Ancient Greek κρύος (krúos, “ice, icy cold, chill, frost”). Uses of the prefix Cryo- include:
Physics and geology
Cryogenics, the study of the production and behaviour of materials at very low temperatures and the study of producing extremely low temperatures
Cryoelectronics, the study of superco... | Cryo | [
"Physics",
"Chemistry",
"Materials_science",
"Engineering",
"Biology"
] | 315 | [
"Physical phenomena",
"Phase transitions",
"Applied and interdisciplinary physics",
"Physical quantities",
"Superconductivity",
"Cryobiology",
"Cryogenics",
"Materials science",
"Condensed matter physics",
"Biochemistry",
"Electrical resistance and conductance"
] |
7,191,759 | https://en.wikipedia.org/wiki/FutureCoal | FutureCoal is an international non-profit, non-governmental association based in London, United Kingdom. It was created to represent the global coal industry. The association was formerly called the World Coal Association (WCA) until 2023 and the World Coal Institute (WCI) until 2010. FutureCoal undertakes lobbying, or... | FutureCoal | [
"Engineering"
] | 307 | [
"Coal organizations",
"International energy organizations",
"Energy organizations"
] |
7,192,444 | https://en.wikipedia.org/wiki/Hirzebruch%20signature%20theorem | In differential topology, an area of mathematics, the Hirzebruch signature theorem (sometimes called the Hirzebruch index theorem)
is Friedrich Hirzebruch's 1954 result expressing the signature
of a smooth closed oriented manifold by a linear combination of Pontryagin numbers called the
L-genus.
It was used in the proo... | Hirzebruch signature theorem | [
"Mathematics"
] | 435 | [
"Theorems in algebraic topology",
"Theorems in differential topology",
"Theorems in topology"
] |
7,192,614 | https://en.wikipedia.org/wiki/Cash%20carrier | Cash carriers were used in shops and department stores to carry customers' payments from the sales assistant to the cashier and to carry the change and receipt back again. The benefits of a "centralised" cash system were that it could be more closely supervised by management, there was less opportunity for pilfering (a... | Cash carrier | [
"Technology"
] | 1,468 | [
"Components",
"Retail store elements"
] |
7,192,871 | https://en.wikipedia.org/wiki/Barium%20chromate | Barium chromate, is a yellow sand like powder with the formula BaCrO4. It is a known oxidizing agent and produces a green flame when heated, a result of the barium ions.
History
The first naturally occurring barium chromate was found in the country of Jordan. The brown crystals found perched on host rocks were named h... | Barium chromate | [
"Chemistry"
] | 1,102 | [
"Chromates",
"Redox",
"Oxidizing agents",
"Salts"
] |
7,193,138 | https://en.wikipedia.org/wiki/Bistriflimide | Bistriflimide, also known variously as bis(trifluoromethane)sulfonimide, bis(trifluoromethanesulfonyl)imide, bis(trifluoromethanesulfonyl)imidate (and variations thereof), informally and somewhat inaccurately as triflimide or triflimidate, or by the abbreviations TFSI or NTf2, is a non-coordinating anion with the chemi... | Bistriflimide | [
"Chemistry"
] | 851 | [
"Superacids",
"Coordination chemistry",
"Acids",
"Non-coordinating anions"
] |
2,180,494 | https://en.wikipedia.org/wiki/Cut%20%28graph%20theory%29 | In graph theory, a cut is a partition of the vertices of a graph into two disjoint subsets. Any cut determines a cut-set, the set of edges that have one endpoint in each subset of the partition. These edges are said to cross the cut. In a connected graph, each cut-set determines a unique cut, and in some cases cuts are... | Cut (graph theory) | [
"Mathematics"
] | 914 | [
"Mathematical relations",
"Graph connectivity",
"Graph theory"
] |
2,180,501 | https://en.wikipedia.org/wiki/International%20Committee%20for%20Information%20Technology%20Standards | The InterNational Committee for Information Technology Standards (INCITS), (pronounced "insights"), is an ANSI-accredited standards development organization composed of Information technology developers. It was formerly known as the X3 and NCITS.
INCITS is the central U.S. forum dedicated to creating technology standa... | International Committee for Information Technology Standards | [
"Technology"
] | 1,222 | [
"Information technology",
"Information technology organizations"
] |
2,180,532 | https://en.wikipedia.org/wiki/Hauptvermutung | The Hauptvermutung of geometric topology is a now refuted conjecture asking whether any two triangulations of a triangulable space have subdivisions that are combinatorially equivalent, i.e. the subdivided triangulations are built up in the same combinatorial pattern. It was originally formulated as a conjecture in 190... | Hauptvermutung | [
"Mathematics"
] | 530 | [
"Topology",
"Geometric topology"
] |
2,180,548 | https://en.wikipedia.org/wiki/List%20of%20Fibre%20Channel%20standards |
Fibre Channel
2005
FC-SATA (under development)
FC-PI-2 INCITS 404
2004
FC-SP ANSI INCITS 1570-D
FC-GS-4 (Fibre Channel Generic Services)ANSI INCITS 387. Includes the following standards:
FC-GS-2 ANSI INCITS 288 (1999)
FC-GS-3 ANSI INCITS 348 (2001)
FC-SW-3 INCITS 384. Includes the following standards:
FC-SW INCI... | List of Fibre Channel standards | [
"Technology"
] | 834 | [
"Computing-related lists"
] |
2,180,593 | https://en.wikipedia.org/wiki/Kirby%E2%80%93Siebenmann%20class | In mathematics, more specifically in geometric topology, the Kirby–Siebenmann class is an obstruction for topological manifolds to allow a PL-structure.
The KS-class
For a topological manifold M, the Kirby–Siebenmann class is an element of the fourth cohomology group of M that vanishes if M admits a piecewise linear ... | Kirby–Siebenmann class | [
"Mathematics"
] | 198 | [
"Topology stubs",
"Topology",
"Geometric topology"
] |
2,180,754 | https://en.wikipedia.org/wiki/Donaldson%27s%20theorem | In mathematics, and especially differential topology and gauge theory, Donaldson's theorem states that a definite intersection form of a compact, oriented, smooth manifold of dimension 4 is diagonalizable. If the intersection form is positive (negative) definite, it can be diagonalized to the identity matrix (negative ... | Donaldson's theorem | [
"Mathematics"
] | 841 | [
"Mathematical theorems",
"Quadratic forms",
"Theorems in topology",
"Topology",
"Differential topology",
"Mathematical problems",
"Number theory"
] |
2,180,929 | https://en.wikipedia.org/wiki/Asherah%20pole | An Asherah pole is a sacred tree or pole that stood near Canaanite religious locations to honor the goddess Asherah. The relation of the literary references to an asherah and archaeological finds of Judaean pillar-figurines has engendered a literature of debate.
The asherim were also cult objects related to the worshi... | Asherah pole | [
"Physics"
] | 1,151 | [
"Religious objects",
"Physical objects",
"Matter"
] |
2,181,039 | https://en.wikipedia.org/wiki/Qubit%20field%20theory | A qubit field theory is a quantum field theory in which the canonical commutation relations involved in the quantisation of pairs of observables are relaxed. Specifically, it is a quantum field theory in which, unlike most other quantum field theories, the pair of observables is not required to always commute.
Theory
... | Qubit field theory | [
"Physics"
] | 301 | [
"Quantum field theory",
"Quantum mechanics",
"Quantum physics stubs"
] |
2,181,154 | https://en.wikipedia.org/wiki/Lead%20hydrogen%20arsenate | Lead hydrogen arsenate, also called lead arsenate, acid lead arsenate or LA, chemical formula PbHAsO4, is an inorganic insecticide formerly used to control pests including gypsy moth, potato beetle and rats.
Lead arsenate was the most extensively used arsenical insecticide. Two principal formulations of lead arsenate ... | Lead hydrogen arsenate | [
"Chemistry"
] | 624 | [
"Inorganic insecticides",
"Inorganic compounds"
] |
2,181,194 | https://en.wikipedia.org/wiki/Aladin%20Sky%20Atlas | Aladin is an interactive software sky atlas, created in France. It allows the user to visualize digitized astronomical images, superimpose entries from astronomical catalogues or databases, and interactively access related data and information from the SIMBAD database, the VizieR service and other archives for all know... | Aladin Sky Atlas | [
"Astronomy"
] | 243 | [
"Centre de données astronomiques de Strasbourg",
"Astronomy data and publications"
] |
2,181,236 | https://en.wikipedia.org/wiki/A%20Sidewalk%20Astronomer | A Sidewalk Astronomer is a 2005 documentary film about former Vedanta monk and amateur astronomer John Dobson. The film follows Dobson to state parks, astronomy clubs, and downtown streets as he promotes awareness of astronomy through his own personal style of sidewalk astronomy. The documentary includes voice overs by... | A Sidewalk Astronomer | [
"Astronomy"
] | 215 | [
"Space art",
"Documentary films about outer space"
] |
2,181,360 | https://en.wikipedia.org/wiki/Tarski%27s%20axioms | Tarski's axioms are an axiom system for Euclidean geometry, specifically for that portion of Euclidean geometry that is formulable in first-order logic with identity (i.e. is formulable as an elementary theory). As such, it does not require an underlying set theory. The only primitive objects of the system are "points"... | Tarski's axioms | [
"Mathematics"
] | 4,042 | [
"Mathematical logic",
"Mathematical axioms",
"Elementary mathematics",
"Elementary geometry",
"Foundations of geometry"
] |
2,181,434 | https://en.wikipedia.org/wiki/Ping%20of%20death | A ping of death is a type of attack on a computer system that involves sending a malformed or otherwise malicious ping to a computer. In this attack, a host sends hundreds of ping requests with a packet size that is large or illegal to another host to try to take it offline or to keep it preoccupied responding with ICM... | Ping of death | [
"Technology"
] | 1,143 | [
"Denial-of-service attacks",
"Computer security exploits"
] |
2,181,563 | https://en.wikipedia.org/wiki/Nuclear%20material | Nuclear material refers to the metals uranium, plutonium, and thorium, in any form, according to the IAEA. This is differentiated further into "source material", consisting of natural and depleted uranium, and "special fissionable material", consisting of enriched uranium (U-235), uranium-233, and plutonium-239. Urani... | Nuclear material | [
"Physics"
] | 690 | [
"Materials",
"Nuclear materials",
"Matter"
] |
2,181,790 | https://en.wikipedia.org/wiki/X-ray%20microtomography | In radiography, X-ray microtomography uses X-rays to create cross-sections of a physical object that can be used to recreate a virtual model (3D model) without destroying the original object. It is similar to tomography and X-ray computed tomography. The prefix micro- (symbol: μ) is used to indicate that the pixel size... | X-ray microtomography | [
"Physics",
"Chemistry",
"Materials_science",
"Technology",
"Engineering"
] | 1,635 | [
"Applied and interdisciplinary physics",
"Microtechnology",
"Materials science",
"Measuring instruments",
"Microscopes",
"nan",
"Microscopy"
] |
2,181,834 | https://en.wikipedia.org/wiki/Aromatic-ring-hydroxylating%20dioxygenases | Aromatic-ring-hydroxylating dioxygenases (ARHD) incorporate two atoms of dioxygen (O2) into their substrates in the dihydroxylation reaction. The product is (substituted) cis-1,2-dihydroxycyclohexadiene, which is subsequently converted to (substituted) benzene glycol by a cis-diol dehydrogenase.
A large family of mult... | Aromatic-ring-hydroxylating dioxygenases | [
"Chemistry"
] | 1,352 | [
"Metalloproteins",
"Bioinorganic chemistry"
] |
2,182,059 | https://en.wikipedia.org/wiki/Z%C3%B6llner%20illusion | The Zöllner illusion is an optical illusion named after its discoverer, German astrophysicist Johann Karl Friedrich Zöllner. In 1860, Zöllner sent his discovery in a letter to physicist and scholar Johann Christian Poggendorff, editor of Annalen der Physik und Chemie, who subsequently discovered the related Poggendorff... | Zöllner illusion | [
"Physics"
] | 265 | [
"Optical phenomena",
"Physical phenomena",
"Optical illusions"
] |
2,182,188 | https://en.wikipedia.org/wiki/Air-operated%20valve | An air-operated valve, also known as a pneumatic valve, is a type of power-operated pipe valve that uses air pressure to perform a function similar to a solenoid. As air pressure is increased, the compressed air starts to push against the piston or diaphragm walls which causes the valve to actuate. Whether the valve op... | Air-operated valve | [
"Physics",
"Chemistry"
] | 464 | [
"Physical systems",
"Valves",
"Hydraulics",
"Piping"
] |
2,182,298 | https://en.wikipedia.org/wiki/Sander%20illusion | The Sander illusion or Sander's parallelogram is an optical illusion described by the German psychologist Friedrich Sander (1889–1971) in 1926. However, it had been published earlier by Matthew Luckiesh in his 1922 book Visual Illusions: Their Causes, Characteristics, and Applications .
The diagonal line bisecting the... | Sander illusion | [
"Physics"
] | 147 | [
"Optical phenomena",
"Physical phenomena",
"Optical illusions"
] |
2,182,309 | https://en.wikipedia.org/wiki/Humphry%20Bowen |
Humphry John Moule Bowen (22 June 1929 – 9 August 2001) was a British botanist and chemist.
Early life and education
Bowen was born in Oxford, son of the chemist Edmund Bowen and Edith Bowen (nee Moule). He attended the Dragon School, gaining a scholarship to Rugby School and then a demyship to Magdalen College, Ox... | Humphry Bowen | [
"Chemistry"
] | 861 | [
"Analytical chemists"
] |
2,182,370 | https://en.wikipedia.org/wiki/Formic%20acid%20%28data%20page%29 | This page provides supplementary chemical data on formic acid.
Material Safety Data Sheet
The handling of this chemical may incur notable safety precautions. It is highly recommend that you seek the Material Safety Datasheet (MSDS) for this chemical from a reliable source and follow its directions.
MSDS from FLUKA ... | Formic acid (data page) | [
"Chemistry"
] | 143 | [
"Chemical data pages",
"nan"
] |
2,182,690 | https://en.wikipedia.org/wiki/Chorda%20tympani | Chorda tympani is a branch of the facial nerve that carries gustatory (taste) sensory innervation from the front of the tongue and parasympathetic (secretomotor) innervation to the submandibular and sublingual salivary glands.
Chorda tympani has a complex course from the brainstem, through the temporal bone and middle... | Chorda tympani | [
"Biology"
] | 1,190 | [
"Organ systems",
"Nervous system"
] |
2,182,714 | https://en.wikipedia.org/wiki/Pregnenolone | Pregnenolone (P5), or pregn-5-en-3β-ol-20-one, is an endogenous steroid and precursor/metabolic intermediate in the biosynthesis of most of the steroid hormones, including the progestogens, androgens, estrogens, glucocorticoids, and mineralocorticoids. In addition, pregnenolone is biologically active in its own right, ... | Pregnenolone | [
"Chemistry"
] | 1,711 | [
"Ketones",
"Functional groups"
] |
2,182,716 | https://en.wikipedia.org/wiki/Fourier-transform%20ion%20cyclotron%20resonance | Fourier-transform ion cyclotron resonance mass spectrometry is a type of mass analyzer (or mass spectrometer) for determining the mass-to-charge ratio (m/z) of ions based on the cyclotron frequency of the ions in a fixed magnetic field. The ions are trapped in a Penning trap (a magnetic field with electric trapping pla... | Fourier-transform ion cyclotron resonance | [
"Physics",
"Chemistry",
"Technology",
"Engineering"
] | 1,808 | [
"Spectrum (physical sciences)",
"Instrumental analysis",
"Mass",
"Measuring instruments",
"Mass spectrometry",
"Matter"
] |
2,182,805 | https://en.wikipedia.org/wiki/Periodinane | Periodinanes also known as λ5-iodanes are organoiodine compounds with iodine in the +5 oxidation state. These compounds are described as hypervalent because the iodine center has more than 8 valence electrons.
Periodinane compounds
The λ5-iodanes such as the Dess-Martin periodinane have square pyramidal geometry with ... | Periodinane | [
"Chemistry"
] | 283 | [
"Redox",
"Oxidizing agents"
] |
2,182,941 | https://en.wikipedia.org/wiki/Silicide | A silicide is a type of chemical compound that combines silicon and a usually more electropositive element.
Silicon is more electropositive than carbon. In terms of their physical properties, silicides are structurally closer to borides than to carbides. Because of size differences however silicides are not isostruct... | Silicide | [
"Physics",
"Chemistry"
] | 867 | [
"Ions",
"Matter",
"Anions"
] |
2,183,007 | https://en.wikipedia.org/wiki/Startle%20response | In animals, including humans, the startle response is a largely unconscious defensive response to sudden or threatening stimuli, such as sudden noise or sharp movement, and is associated with negative affect. Usually the onset of the startle response is a startle reflex reaction. The startle reflex is a brainstem refle... | Startle response | [
"Biology"
] | 1,363 | [
"Behavioural sciences",
"Ethology",
"Behavior"
] |
2,183,025 | https://en.wikipedia.org/wiki/Aluminide | Aluminides are intermetallic compounds of aluminium. Since aluminium is near the nonmetals on the periodic table, it can bond with metals differently than other metals. The properties of an aluminide are between those of a metal alloy and those of an ionic compound. Aluminides are used as bond coats in thermal barrier ... | Aluminide | [
"Physics",
"Chemistry",
"Materials_science"
] | 131 | [
"Inorganic compounds",
"Metallurgy",
"Inorganic compound stubs",
"Alloys",
"Intermetallics",
"Condensed matter physics",
"Aluminides"
] |
2,183,056 | https://en.wikipedia.org/wiki/4-Dimethylaminopyridine | 4-Dimethylaminopyridine (DMAP) is a derivative of pyridine with the chemical formula (CH3)2NC5H4N. This white solid is of interest because it is more basic than pyridine, owing to the resonance stabilisation from the NMe2 substituent.
Because of its basicity, DMAP is a useful nucleophilic catalyst for a variety of re... | 4-Dimethylaminopyridine | [
"Chemistry"
] | 608 | [
"Catalysis",
"Catalysts",
"Chemical kinetics",
"Reagents for organic chemistry"
] |
2,183,504 | https://en.wikipedia.org/wiki/ATREX | The ATREX engine (Air Turbo Ramjet Engine with eXpander cycle) developed in Japan is an experimental precooled jet engine that works as a turbojet at low speeds and a ramjet up to mach 6.0.
ATREX uses liquid hydrogen fuel in a fairly exotic single-fan arrangement. The liquid hydrogen fuel is pumped through a heat exch... | ATREX | [
"Technology"
] | 243 | [
"Jet engines",
"Engines"
] |
2,183,554 | https://en.wikipedia.org/wiki/DEC%20RADIX%2050 | RADIX 50 or RAD50 (also referred to as RADIX50, RADIX-50 or RAD-50), is an uppercase-only character encoding created by Digital Equipment Corporation (DEC) for use on their DECsystem, PDP, and VAX computers.
RADIX 50's 40-character repertoire (050 in octal) can encode six characters plus four additional bits into one ... | DEC RADIX 50 | [
"Technology"
] | 956 | [
"Natural language and computing",
"Character encoding"
] |
2,183,637 | https://en.wikipedia.org/wiki/Watchtower | A watchtower or watch tower is a type of fortification used in many parts of the world. It differs from a regular tower in that its primary use is military and from a turret in that it is usually a freestanding structure. Its main purpose is to provide a high, safe place from which a sentinel or guard may observe the s... | Watchtower | [
"Engineering"
] | 973 | [
"Structural engineering",
"Towers"
] |
2,183,802 | https://en.wikipedia.org/wiki/Redcedar%20bolt | Redcedar bolts are relatively small (1 foot x 1 foot x 1 foot is common) cubes of Western Redcedar which are later processed into redcedar roof shingles.
References
Roofs
Woodworking | Redcedar bolt | [
"Technology",
"Engineering"
] | 44 | [
"Structural system",
"Structural engineering",
"Roofs"
] |
2,183,884 | https://en.wikipedia.org/wiki/Push%20Access%20Protocol | Push Access Protocol (or PAP) is a protocol defined in WAP-164 of the Wireless Application Protocol (WAP) suite from the Open Mobile Alliance. PAP is used for communicating with the Push Proxy Gateway, which is usually part of a WAP Gateway.
PAP is intended for use in delivering content from Push Initiators to Push Pr... | Push Access Protocol | [
"Technology"
] | 2,380 | [
"Wireless networking",
"Wireless Application Protocol"
] |
2,183,934 | https://en.wikipedia.org/wiki/Conditional%20access | Conditional access (CA) is a term commonly used in relation to software and to digital television systems. Conditional access is an evaluation to ensure the person who is seeking access to content is authorized to access the content. Access is managed by requiring certain criteria to be met before granting access to th... | Conditional access | [
"Engineering"
] | 1,260 | [
"Broadcast engineering",
"Electronic engineering"
] |
2,184,047 | https://en.wikipedia.org/wiki/Beryllium%20fluoride | Beryllium fluoride is the inorganic compound with the formula BeF2. This white solid is the principal precursor for the manufacture of beryllium metal. Its structure resembles that of quartz, but BeF2 is highly soluble in water.
Properties
Beryllium fluoride has distinctive optical properties. In the form of fluorobe... | Beryllium fluoride | [
"Chemistry"
] | 906 | [
"Highly-toxic chemical substances",
"Harmful chemical substances",
"Fluorides",
"Salts"
] |
2,184,383 | https://en.wikipedia.org/wiki/Boiling-point%20elevation | Boiling-point elevation is the phenomenon whereby the boiling point of a liquid (a solvent) will be higher when another compound is added, meaning that a solution has a higher boiling point than a pure solvent. This happens whenever a non-volatile solute, such as a salt, is added to a pure solvent, such as water. The b... | Boiling-point elevation | [
"Physics",
"Chemistry",
"Mathematics"
] | 1,251 | [
"Scalar physical quantities",
"Applied and interdisciplinary physics",
"Physical quantities",
"Quantity",
"Chemical quantities",
"Amount of substance",
"nan",
"Wikipedia categories named after physical quantities",
"Physical chemistry"
] |
2,184,799 | https://en.wikipedia.org/wiki/Fucose | Fucose is a hexose deoxy sugar with the chemical formula C6H12O5. It is found on N-linked glycans on the mammalian, insect and plant cell surface. Fucose is the fundamental sub-unit of the seaweed polysaccharide fucoidan. The α(1→3) linked core of fucoidan is a suspected carbohydrate antigen for IgE-mediated allergy.
... | Fucose | [
"Chemistry"
] | 474 | [
"Deoxy sugars",
"Carbohydrates"
] |
2,184,818 | https://en.wikipedia.org/wiki/Bischler%E2%80%93M%C3%B6hlau%20indole%20synthesis | The Bischler–Möhlau indole synthesis, also often referred to as the Bischler indole synthesis, is a chemical reaction that forms a 2-aryl-indole from an α-bromo-acetophenone and excess aniline; it is named after August Bischler and
.
Despite its long history, this classical reaction had received relatively little att... | Bischler–Möhlau indole synthesis | [
"Chemistry"
] | 445 | [
"Name reactions",
"Ring forming reactions",
"Organic reactions"
] |
2,184,922 | https://en.wikipedia.org/wiki/James%20Orr%20%28theologian%29 | James Orr (1844–6 September 1913) was a Scottish Presbyterian minister and professor of church history and then theology. He was an influential defender of evangelical doctrine and a contributor to The Fundamentals.
Biography
Orr was born in Glasgow and spent his childhood in Manchester and Leeds. He was orphaned an... | James Orr (theologian) | [
"Biology"
] | 1,691 | [
"Non-Darwinian evolution",
"Theistic evolutionists",
"Biology theories"
] |
2,185,021 | https://en.wikipedia.org/wiki/Serre%27s%20property%20FA | In mathematics, Property FA is a property of groups first defined by Jean-Pierre Serre.
A group G is said to have property FA if every action of G on a tree has a global fixed point.
Serre shows that if a group has property FA, then it cannot split as an amalgamated product or HNN extension; indeed, if G is contained... | Serre's property FA | [
"Mathematics"
] | 464 | [
"Mathematical structures",
"Algebraic structures",
"Properties of groups"
] |
2,185,600 | https://en.wikipedia.org/wiki/Storage%20Management%20Initiative%20%E2%80%93%20Specification | The Storage Management Initiative Specification, commonly called SMI-S, is a computer data storage management standard developed and maintained by the Storage Networking Industry Association (SNIA). It has also been ratified as an ISO standard. SMI-S is based upon the Common Information Model and the Web-Based Enterpri... | Storage Management Initiative – Specification | [
"Technology"
] | 1,508 | [
"American National Standards Institute standards",
"Computer standards"
] |
13,339,410 | https://en.wikipedia.org/wiki/Hydroxyl%20aluminium%20bis%282-ethylhexanoate%29 | Hydroxyl aluminium bis(2-ethylhexanoate) is a chemical substance derived from 2-ethylhexanoic acid and aluminium(III). Nominally it is the coordination complex with the formula Al(OH)(O2CCHEt(CH2)3CH3)2 where Et = ethyl. The composition is not a homogeneous compound. It is used as a thickening agent in various produc... | Hydroxyl aluminium bis(2-ethylhexanoate) | [
"Chemistry"
] | 115 | [
"Organic compounds",
"Organic compound stubs",
"Organic chemistry stubs"
] |
13,339,992 | https://en.wikipedia.org/wiki/ARC-ECRIS | ARC-ECRIS is an Electron Cyclotron Resonance Ion Source (ECRIS) based on arc-shaped coils unlike the conventional ECRIS which bases on a multipole magnet (usually a hexapole magnet) inside a solenoid magnet.
First time the arc-shaped coils were used already in the 1960s in fusion experiments, for example at the Lawren... | ARC-ECRIS | [
"Physics"
] | 179 | [
"Spectrum (physical sciences)",
"Ion source",
"Mass spectrometry",
"Particle physics",
"Particle physics stubs"
] |
13,340,022 | https://en.wikipedia.org/wiki/Bacillus%20virus%20phi29 | Bacillus virus Φ29 (bacteriophage Φ29) is a double-stranded DNA (dsDNA) bacteriophage with a prolate icosahedral head and a short tail that belongs to the genus Salasvirus, order Caudovirales, and family Salasmaviridae. They are in the same order as phages PZA, Φ15, BS32, B103, M2Y (M2), Nf, and GA-1. First discovered ... | Bacillus virus phi29 | [
"Biology"
] | 1,446 | [
"Model organisms",
"Biological models"
] |
13,340,538 | https://en.wikipedia.org/wiki/Compulsory%20stock%20obligation | In the UK, a compulsory stock obligation (CSO) is a minimum stock of fuel reserves that must be held by a supplier in the United Kingdom against shortages or interruptions in supply. The scheme is administered by the Department of Trade and Industry (DTI). The CSO is based on the actual net imports.
Description
The c... | Compulsory stock obligation | [
"Chemistry"
] | 220 | [
"Petroleum",
"Petroleum stubs"
] |
13,341,540 | https://en.wikipedia.org/wiki/Asymmetric%20norm | In mathematics, an asymmetric norm on a vector space is a generalization of the concept of a norm.
Definition
An asymmetric norm on a real vector space is a function that has the following properties:
Subadditivity, or the triangle inequality:
Nonnegative homogeneity: and every non-negative real number
Posit... | Asymmetric norm | [
"Mathematics"
] | 442 | [
"Linear algebra",
"Mathematical analysis",
"Norms (mathematics)",
"Algebra"
] |
13,341,622 | https://en.wikipedia.org/wiki/Unparticle%20physics | In theoretical physics, unparticle physics is a speculative theory that conjectures a form of matter that cannot be explained in terms of particles using the Standard Model of particle physics, because its components are scale invariant.
Howard Georgi proposed this theory in two 2007 papers, "Unparticle Physics"
and "... | Unparticle physics | [
"Physics"
] | 827 | [
"Theoretical physics",
"Particle physics"
] |
13,341,682 | https://en.wikipedia.org/wiki/Canrenoic%20acid | Canrenoic acid is a synthetic steroidal antimineralocorticoid which was never marketed.
See also
Potassium canrenoate
Canrenone
References
Antimineralocorticoids
Carboxylic acids
Conjugated dienes
Enones
Pregnanes
Spirolactones
Steroidal antiandrogens
Tertiary alcohols | Canrenoic acid | [
"Chemistry"
] | 72 | [
"Carboxylic acids",
"Functional groups"
] |
13,341,876 | https://en.wikipedia.org/wiki/Threat | A threat is a communication of intent to inflict harm or loss on another person. Intimidation is a tactic used between conflicting parties to make the other timid or psychologically insecure for coercion or control. The act of intimidation for coercion is considered a threat.
Threatening or threatening behavior (or cr... | Threat | [
"Biology"
] | 448 | [
"Harassment and bullying",
"Behavior",
"Aggression"
] |
13,342,572 | https://en.wikipedia.org/wiki/Single-input%20single-output%20system | In control engineering, a single-input and single-output (SISO) system is a simple single-variable control system with one input and one output. In radio, it is the use of only one antenna both in the transmitter and receiver.
Details
SISO systems are typically less complex than multiple-input multiple-output (MIMO) s... | Single-input single-output system | [
"Engineering"
] | 215 | [
"Control engineering"
] |
13,342,698 | https://en.wikipedia.org/wiki/Robbins%20lemma | In statistics, the Robbins lemma, named after Herbert Robbins, states that if X is a random variable having a Poisson distribution with parameter λ, and f is any function for which the expected value E(f(X)) exists, then
Robbins introduced this proposition while developing empirical Bayes methods.
References
Theor... | Robbins lemma | [
"Mathematics"
] | 74 | [
"Mathematical problems",
"Mathematical theorems",
"Theorems in statistics",
"Lemmas"
] |
13,343,202 | https://en.wikipedia.org/wiki/Aging-associated%20diseases | An aging-associated disease (commonly termed age-related disease, ARD) is a disease that is most often seen with increasing frequency with increasing senescence. They are essentially complications of senescence, distinguished from the aging process itself because all adult animals age (with rare exceptions) but not all... | Aging-associated diseases | [
"Chemistry",
"Biology"
] | 1,769 | [
"Senescence",
"Aging-associated diseases",
"Metabolism",
"Cellular processes"
] |
13,343,248 | https://en.wikipedia.org/wiki/Muffler%20man | Muffler men are large molded fiberglass sculptures that are placed as advertising icons, roadside attractions, or for decorative purposes, predominantly in the United States. Standing approximately tall, the first figure was a Paul Bunyan character designed to hold an axe. Derivatives of that figure were widely used t... | Muffler man | [
"Physics"
] | 823 | [
"Physical systems",
"Transport",
"Transport culture"
] |
13,343,317 | https://en.wikipedia.org/wiki/Photoinitiator | In chemistry, a photoinitiator is a molecule that creates reactive species (free radicals, cations or anions) when exposed to radiation (UV or visible). Synthetic photoinitiators are key components in photopolymers (for example, photo-curable coatings, adhesives and dental restoratives).
Some small molecules in the at... | Photoinitiator | [
"Chemistry"
] | 1,024 | [
"nan"
] |
13,343,892 | https://en.wikipedia.org/wiki/IEEE%20MultiMedia | IEEE MultiMedia is a quarterly peer-reviewed scientific journal published by the IEEE Computer Society and covering multimedia technologies. Topics of interest include image processing, video processing, audio analysis, text retrieval and understanding, data mining and analysis, and data fusion. It was established in 1... | IEEE MultiMedia | [
"Technology"
] | 102 | [
"Multimedia"
] |
13,344,659 | https://en.wikipedia.org/wiki/Memory%20safety | Memory safety is the state of being protected from various software bugs and security vulnerabilities when dealing with memory access, such as buffer overflows and dangling pointers. For example, Java is said to be memory-safe because its runtime error detection checks array bounds and pointer dereferences. In contrast... | Memory safety | [
"Technology"
] | 1,662 | [
"Computer security exploits"
] |
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