id int64 39 79M | url stringlengths 32 168 | text stringlengths 7 145k | source stringlengths 2 105 | categories listlengths 1 6 | token_count int64 3 32.2k | subcategories listlengths 0 27 |
|---|---|---|---|---|---|---|
8,223,772 | https://en.wikipedia.org/wiki/NASU%20Institute%20of%20Cryobiology%20and%20Cryomedicine%20Issues | The Institute for Problems of Cryobiology and Cryomedicine in Kharkiv is one of the institutes of the National Academy of Science of Ukraine, and is the largest institute devoted to cryobiology research in the world.
Background
Established in 1972, the focus of the research is on cryoinjury, cryosurgery, cryopreserva... | NASU Institute of Cryobiology and Cryomedicine Issues | [
"Physics",
"Chemistry",
"Biology"
] | 184 | [
"Biochemistry",
"Physical phenomena",
"Phase transitions",
"Cryobiology"
] |
8,231,140 | https://en.wikipedia.org/wiki/Methanol%20reformer | A methanol reformer is a device used in chemical engineering, especially in the area of fuel cell technology, which can produce pure hydrogen gas and carbon dioxide by reacting a methanol and water (steam) mixture.
Methanol is transformed into hydrogen and carbon dioxide by pressure and heat and interaction with a c... | Methanol reformer | [
"Chemistry",
"Engineering"
] | 793 | [
"Separation processes",
"Chemical equipment",
"Membrane technology",
"Industrial gases",
"nan",
"Chemical process engineering"
] |
472,429 | https://en.wikipedia.org/wiki/Non-equilibrium%20thermodynamics | Non-equilibrium thermodynamics is a branch of thermodynamics that deals with physical systems that are not in thermodynamic equilibrium but can be described in terms of macroscopic quantities (non-equilibrium state variables) that represent an extrapolation of the variables used to specify the system in thermodynamic e... | Non-equilibrium thermodynamics | [
"Physics",
"Chemistry",
"Mathematics"
] | 6,211 | [
"Non-equilibrium thermodynamics",
"Branches of thermodynamics",
"Thermodynamics",
"Dynamical systems"
] |
472,834 | https://en.wikipedia.org/wiki/Natural%20nuclear%20fission%20reactor | A natural nuclear fission reactor is a uranium deposit where self-sustaining nuclear chain reactions occur. The idea of a nuclear reactor existing in situ within an ore body moderated by groundwater was briefly explored by Paul Kuroda in 1956. The existence of an extinct or fossil nuclear fission reactor, where self-su... | Natural nuclear fission reactor | [
"Physics",
"Chemistry"
] | 2,637 | [
"Nuclear fission",
"Nuclear chemistry",
"nan",
"Nuclear physics"
] |
472,950 | https://en.wikipedia.org/wiki/Surrogate%20key | A surrogate key (or synthetic key, pseudokey, entity identifier, factless key, or technical key) in a database is a unique identifier for either an entity in the modeled world or an object in the database. The surrogate key is not derived from application data, unlike a natural (or business) key.
Definition
There ar... | Surrogate key | [
"Engineering"
] | 2,783 | [
"Data modeling",
"Data engineering"
] |
473,514 | https://en.wikipedia.org/wiki/Generalized%20coordinates | In analytical mechanics, generalized coordinates are a set of parameters used to represent the state of a system in a configuration space. These parameters must uniquely define the configuration of the system relative to a reference state. The generalized velocities are the time derivatives of the generalized coordinat... | Generalized coordinates | [
"Physics",
"Mathematics"
] | 2,434 | [
"Mechanical quantities",
"Physical quantities",
"Quantity",
"Classical mechanics",
"Lagrangian mechanics",
"Mechanics",
"Dynamical systems"
] |
474,105 | https://en.wikipedia.org/wiki/Inerting%20system | An inerting system decreases the probability of combustion of flammable materials stored in a confined space. The most common such system is a fuel tank containing a combustible liquid, such as gasoline, diesel fuel, aviation fuel, jet fuel, or rocket propellant. After being fully filled, and during use, there is a spa... | Inerting system | [
"Chemistry",
"Engineering"
] | 2,278 | [
"Explosion protection",
"Combustion engineering",
"Industrial gases",
"Explosions",
"Chemical process engineering"
] |
474,363 | https://en.wikipedia.org/wiki/Glycosylation | Glycosylation is the reaction in which a carbohydrate (or 'glycan'), i.e. a glycosyl donor, is attached to a hydroxyl or other functional group of another molecule (a glycosyl acceptor) in order to form a glycoconjugate. In biology (but not always in chemistry), glycosylation usually refers to an enzyme-catalysed react... | Glycosylation | [
"Chemistry",
"Biology"
] | 3,705 | [
"Biomolecules by chemical classification",
"Carbohydrates",
"Gene expression",
"Congenital disorders of glycosylation",
"Biochemical reactions",
"Organic compounds",
"Organic reactions",
"Post-translational modification",
"Carbohydrate chemistry",
"nan",
"Chemical synthesis",
"Biochemistry",
... |
3,543,062 | https://en.wikipedia.org/wiki/Hydrodesulfurization | Hydrodesulfurization or hydrodesulphurisation (Commonwealth English; see spelling differences) (HDS), also called hydrotreatment or hydrotreating, is a catalytic chemical process widely used to remove sulfur (S) from natural gas and from refined petroleum products, such as gasoline or petrol, jet fuel, kerosene, diesel... | Hydrodesulfurization | [
"Chemistry"
] | 3,030 | [
"Desulfurization",
"Separation processes",
"Petroleum technology",
"Chemical processes",
"Natural gas technology",
"Oil refining",
"nan",
"Chemical process engineering"
] |
3,543,381 | https://en.wikipedia.org/wiki/Kato%27s%20conjecture | Kato's conjecture is a mathematical problem named after mathematician Tosio Kato, of the University of California, Berkeley. Kato initially posed the problem in 1953.
Kato asked whether the square roots of certain elliptic operators, defined via functional calculus, are analytic. The full statement of the conjecture a... | Kato's conjecture | [
"Mathematics"
] | 164 | [
"Mathematical analysis",
"Mathematical analysis stubs",
"Conjectures that have been proved",
"Mathematical problems",
"Mathematical theorems",
"Differential operators"
] |
3,543,720 | https://en.wikipedia.org/wiki/Particle%20number%20operator | In quantum mechanics, for systems where the total number of particles may not be preserved, the number operator is the observable that counts the number of particles.
The following is in bra–ket notation: The number operator acts on Fock space. Let
be a Fock state, composed of single-particle states drawn from a bas... | Particle number operator | [
"Physics"
] | 161 | [
"Quantum operators",
"Quantum mechanics"
] |
3,544,145 | https://en.wikipedia.org/wiki/9%2C10-Dithioanthracene | 9,10-Dithioanthracene (DTA) is an organic molecule and a derivative of anthracene with two thiol groups. In 2004, DTA molecules were demonstrated to be able to "walk" in a straight line (reportedly a first) on a metal surface by, in effect, mimicking the bipedal motion of a human being. The sulfur-bearing functional gr... | 9,10-Dithioanthracene | [
"Chemistry",
"Materials_science"
] | 290 | [
"Organic compounds",
"Nanotechnology",
"Thiols",
"Nanomaterials"
] |
3,544,225 | https://en.wikipedia.org/wiki/Nano-abacus | A nano-abacus is a nano-sized abacus that performs basic arithmetic computations using various forms of nanotechnology including photonics and lateral mechanical stimulation of molecular motion with a scanning tunneling microscope (STM) tip by repulsion. The nano-abacus has the potential to be used in a variety of nano... | Nano-abacus | [
"Materials_science",
"Engineering"
] | 417 | [
"Nanotechnology",
"Materials science stubs",
"Nanotechnology stubs",
"Materials science"
] |
3,545,648 | https://en.wikipedia.org/wiki/Probability%20current | In quantum mechanics, the probability current (sometimes called probability flux) is a mathematical quantity describing the flow of probability. Specifically, if one thinks of probability as a heterogeneous fluid, then the probability current is the rate of flow of this fluid. It is a real vector that changes with spac... | Probability current | [
"Physics"
] | 1,502 | [
"Theoretical physics",
"Quantum mechanics"
] |
3,546,095 | https://en.wikipedia.org/wiki/Pneumatic%20cylinder | Pneumatic cylinder, also known as air cylinder, is a mechanical device which uses the power of compressed gas to produce a force in a reciprocating linear motion.
Like in a hydraulic cylinder, something forces a piston to move in the desired direction. The piston is a disc or cylinder, and the piston rod transfers th... | Pneumatic cylinder | [
"Chemistry",
"Engineering"
] | 2,054 | [
"Piping",
"Chemical engineering",
"Fluid dynamics"
] |
3,548,289 | https://en.wikipedia.org/wiki/Penning%20mixture | A Penning mixture is a mixture of gases that is used in electric gas-discharge lamps. It is defined as a mixture of one inert gas with a minute amount of another gas, one that has lower ionization voltage than the main constituent. It is named after Frans Michel Penning.
The well-known neon lighting and neon lamps and... | Penning mixture | [
"Physics",
"Chemistry",
"Materials_science"
] | 485 | [
"Noble gases",
"Plasma physics",
"Plasma technology and applications",
"Nonmetals",
"Industrial gases",
"Chemical process engineering"
] |
4,772,239 | https://en.wikipedia.org/wiki/Pao%20%28unit%29 | The pao is a unit of dry measure (mass) which is used in South Asia. The name may come from the Punjabi ਪਾਓ páo, which was a traditional charge of one quarter of a seer per every maund of grain that was weighed, converted into a tax by Sawan Mal. Turner also cites a Sindhi word pāu () meaning a quarter of a seer.
The ... | Pao (unit) | [
"Physics",
"Mathematics"
] | 371 | [
"Obsolete units of measurement",
"Matter",
"Quantity",
"Units of mass",
"Mass",
"Units of measurement"
] |
4,772,764 | https://en.wikipedia.org/wiki/Mount%20Mulligan%20mine%20disaster | The Mount Mulligan mine disaster occurred on 19 September 1921 in Mount Mulligan, Far North Queensland, Australia. A series of explosions in the local coal mine, audible as much as 30 km away, rocked the close-knit township.
Seventy-five workers were killed by the disaster, making it the third-worst coal mining accid... | Mount Mulligan mine disaster | [
"Chemistry"
] | 596 | [
"Dust explosions",
"Explosions"
] |
4,772,897 | https://en.wikipedia.org/wiki/Promethium%28III%29%20oxide | Promethium(III) oxide is a compound with the formula Pm2O3. It is the most common form of promethium.
Crystal structure
Promethium oxide exists in three major crystalline forms:
*a, b and c are lattice parameters, Z is the number of formula units per unit cell, density is calculated from X-ray data.
The low-tempera... | Promethium(III) oxide | [
"Chemistry"
] | 136 | [
"Inorganic compounds",
"Inorganic compound stubs"
] |
4,773,615 | https://en.wikipedia.org/wiki/Aerary | Aerary is a room in a building that was used to contain something precious, such as treasure. An example is the aerary porch in St. George's Chapel at Windsor Castle, which was built in 1353–1354. It was used as the entrance to a new college being established there by Edward III.
References
Rooms | Aerary | [
"Engineering"
] | 71 | [
"Rooms",
"Architecture"
] |
4,775,145 | https://en.wikipedia.org/wiki/Aeon%20%28Thelema%29 | In the esoteric philosophy of Thelema, founded by Aleister Crowley in the early 20th century, an Aeon is a period of time defined by distinct spiritual and cultural characteristics, each accompanied by its own forms of magical and religious expression. Thelemites believe that the history of humanity is divided into a s... | Aeon (Thelema) | [
"Physics",
"Mathematics"
] | 1,275 | [
"Physical quantities",
"Time",
"Units of time",
"Quantity",
"Time in religion",
"Spacetime",
"Units of measurement"
] |
4,777,013 | https://en.wikipedia.org/wiki/6-Monoacetylmorphine | 6-Monoacetylmorphine (6-MAM, 6-acetylmorphine, or 6-AM) is an opioid and also one of three active metabolites of heroin (diacetylmorphine), the others being morphine and the much less active 3-monoacetylmorphine (3-MAM).
Pharmacology
6-MAM occurs as a metabolite of heroin. Once it has passed first-pass metabolism, 6-M... | 6-Monoacetylmorphine | [
"Chemistry"
] | 877 | [
"Chemicals in medicine",
"Prodrugs",
"Human drug metabolites"
] |
23,834,912 | https://en.wikipedia.org/wiki/Arithmetic%20topology | Arithmetic topology is an area of mathematics that is a combination of algebraic number theory and topology. It establishes an analogy between number fields and closed, orientable 3-manifolds.
Analogies
The following are some of the analogies used by mathematicians between number fields and 3-manifolds:
A number field... | Arithmetic topology | [
"Mathematics"
] | 455 | [
"Algebraic number theory",
"Number theory"
] |
23,835,696 | https://en.wikipedia.org/wiki/Gordan%27s%20lemma | Gordan's lemma is a lemma in convex geometry and algebraic geometry. It can be stated in several ways.
Let be a matrix of integers. Let be the set of non-negative integer solutions of . Then there exists a finite subset of vectors in , such that every element of is a linear combination of these vectors with non-ne... | Gordan's lemma | [
"Mathematics"
] | 1,032 | [
"Theorems in convex geometry",
"Fields of abstract algebra",
"Theorems in geometry",
"Algebraic geometry",
"Mathematical problems",
"Mathematical theorems",
"Lemmas"
] |
23,836,847 | https://en.wikipedia.org/wiki/Ranklet | In statistics, a ranklet is an orientation-selective non-parametric feature which is based on the computation of Mann–Whitney–Wilcoxon (MWW) rank-sum test statistics. Ranklets achieve similar response to Haar wavelets as they share the same pattern of orientation-selectivity, multi-scale nature and a suitable notion of... | Ranklet | [
"Physics"
] | 499 | [
"Spacetime",
"Space",
"Spatial analysis"
] |
10,617,563 | https://en.wikipedia.org/wiki/Inter-domain%20routing | Inter-domain routing is data flow control and interaction between Primary Domain Controller (PDC) computers. This type of computer uses various computer protocols and services to operate. It is most commonly used to multicast between internet domains.
Internet use
An Internet service provider, ISP, is provided with a ... | Inter-domain routing | [
"Engineering"
] | 344 | [
"Network architecture",
"Computer networks engineering"
] |
10,617,707 | https://en.wikipedia.org/wiki/Sewer%20gas%20destructor%20lamp | A sewer gas destructor lamp is a type of lamp used to remove sewer gases and their hazards.
Background
Biogas forming in sewers via anaerobic digestion can be a potentially foul-smelling and explosive hazard (chiefly due to chemical spills). Unlike ordinary gas lamps for street lighting, the main purpose of sewer g... | Sewer gas destructor lamp | [
"Chemistry",
"Engineering"
] | 743 | [
"Water technology",
"Anaerobic digestion",
"Environmental engineering"
] |
10,620,457 | https://en.wikipedia.org/wiki/Lambek%E2%80%93Moser%20theorem | The Lambek–Moser theorem is a mathematical description of partitions of the natural numbers into two complementary sets. For instance, it applies to the partition of numbers into even and odd, or into prime and non-prime (one and the composite numbers). There are two parts to the Lambek–Moser theorem. One part states t... | Lambek–Moser theorem | [
"Mathematics"
] | 1,561 | [
"Sequences and series",
"Mathematical theorems",
"Integer sequences",
"Mathematical structures",
"Recreational mathematics",
"Mathematical objects",
"Combinatorics",
"Theorems in number theory",
"Mathematical problems",
"Numbers",
"Number theory"
] |
10,622,169 | https://en.wikipedia.org/wiki/King%20post | A king post (or king-post or kingpost) is a central vertical post used in architectural or bridge designs, working in tension to support a beam below from a truss apex above (whereas a crown post, though visually similar, supports items above from the beam below).
In aircraft design a strut called a king post acts in ... | King post | [
"Technology",
"Engineering"
] | 1,141 | [
"Structural engineering",
"Timber framing",
"Building engineering",
"Trusses",
"Structural system",
"Construction",
"Architectural elements",
"Civil engineering",
"Components",
"Architecture"
] |
10,624,594 | https://en.wikipedia.org/wiki/Krypton | Krypton (from 'the hidden one') is a chemical element; it has symbol Kr and atomic number 36. It is a colorless, odorless noble gas that occurs in trace amounts in the atmosphere and is often used with other rare gases in fluorescent lamps. Krypton is chemically inert.
Krypton, like the other noble gases, is used in ... | Krypton | [
"Physics",
"Materials_science"
] | 2,269 | [
"Noble gases",
"Chemical elements",
"Nonmetals",
"Atoms",
"Matter"
] |
10,626,173 | https://en.wikipedia.org/wiki/Sun%20valve | A sun valve (Swedish: solventil, "solar valve") is a flow control valve that automatically shuts off gas flow during daylight. It earned its inventor Gustaf Dalén the 1912 Nobel Prize in Physics. Subsequently other variants of sun valve were developed for different uses.
Dalén's valve
The valve was the key component ... | Sun valve | [
"Physics",
"Chemistry"
] | 539 | [
"Physical systems",
"Valves",
"Hydraulics",
"Piping"
] |
10,626,778 | https://en.wikipedia.org/wiki/Transdermal | Transdermal is a route of administration wherein active ingredients are delivered across the skin for systemic distribution. Examples include transdermal patches used for medicine delivery.
The drug is administered in the form of a patch or ointment that delivers the drug into the circulation for systemic effect.
Tech... | Transdermal | [
"Chemistry"
] | 913 | [
"Pharmacology",
"Routes of administration"
] |
10,626,981 | https://en.wikipedia.org/wiki/Da%20Vinci%20Systems | da Vinci Systems was an American digital cinema company founded in 1984 in Coral Springs, Florida as a spinoff of Video Tape Associates. It was known for its hardware-based color correction products, GPU-based color grading, digital mastering systems, and film restoration and remastering systems. It was one of the ear... | Da Vinci Systems | [
"Engineering"
] | 2,143 | [
"Electronic engineering",
"Video hardware"
] |
10,627,634 | https://en.wikipedia.org/wiki/2001%20Humber%20Refinery%20explosion | The 2001 Humber Refinery explosion was a major incident at the then Conoco-owned Humber Refinery at South Killingholme in North Lincolnshire, England. A large explosion occurred on the Saturate Gas Plant area of the site on Easter Monday, 16 April 2001 at approximately 2:20 p.m. There were no fatalities, but two people... | 2001 Humber Refinery explosion | [
"Technology",
"Engineering"
] | 994 | [
"Systems engineering",
"Reliability engineering",
"Technological failures",
"Engineering failures",
"Civil engineering"
] |
15,713,242 | https://en.wikipedia.org/wiki/Superconducting%20radio%20frequency | Superconducting radio frequency (SRF) science and technology involves the application of electrical superconductors to radio frequency devices. The ultra-low electrical resistivity of a superconducting material allows an RF resonator to obtain an extremely high quality factor, Q. For example, it is commonplace for a ... | Superconducting radio frequency | [
"Physics",
"Materials_science",
"Engineering"
] | 6,202 | [
"Applied and interdisciplinary physics",
"Physical quantities",
"Superconductivity",
"Materials science",
"Experimental physics",
"Condensed matter physics",
"Accelerator physics",
"Electrical resistance and conductance"
] |
15,714,959 | https://en.wikipedia.org/wiki/Expanded%20metal | Expanded metal is a type of sheet metal which has been cut and stretched to form a regular pattern (often diamond-shaped) of mesh-like material. It is commonly used for fences and grates, and as metallic lath to support plaster or stucco.
Description
Expanded metal is stronger than an equivalent weight of wire mesh su... | Expanded metal | [
"Physics",
"Engineering"
] | 940 | [
"Building engineering",
"Construction",
"Materials",
"Building materials",
"Matter",
"Architecture"
] |
19,668,009 | https://en.wikipedia.org/wiki/Polymer%20field%20theory | A polymer field theory is a statistical field theory describing the statistical behavior of a neutral or charged polymer system. It can be derived by transforming the partition function from its standard many-dimensional integral representation over the particle degrees of freedom in a functional integral representatio... | Polymer field theory | [
"Physics"
] | 2,498 | [
"Physical phenomena",
"Statistical mechanics",
"Critical phenomena",
"Statistical field theories"
] |
19,669,402 | https://en.wikipedia.org/wiki/Mark%20Benson%20%28engineer%29 | Mark Benson (born Mark Müller; Jun 19, 1888 – May 1965) was a Bohemian German engineer, best known as the inventor of a supercritical boiler.
Benson was born in the Sudetenland, and his original name was Müller (he changed his name during World War I to hide his German origin). He emigrated to the United States, then... | Mark Benson (engineer) | [
"Chemistry"
] | 293 | [
"Boilers",
"Pressure vessels"
] |
19,675,057 | https://en.wikipedia.org/wiki/Upper%20tropospheric%20cyclonic%20vortex | An upper tropospheric cyclonic vortex is a vortex, or a circulation with a definable center, that usually moves slowly from east-northeast to west-southwest and is prevalent across Northern Hemisphere's warm season. Its circulations generally do not extend below in altitude, as it is an example of a cold-core low. ... | Upper tropospheric cyclonic vortex | [
"Chemistry",
"Mathematics"
] | 1,608 | [
"Dynamical systems",
"Vortices",
"Fluid dynamics"
] |
19,679,428 | https://en.wikipedia.org/wiki/Inertance | In fluid mechanics, inertance is a measure of the pressure difference in a fluid required to cause a unit change in the rate of change of volumetric flow-rate with time. The base SI units of inertance are or and the usual symbol is .
The inertance of a tube is given by:
where
is the density (with dimensionality... | Inertance | [
"Engineering"
] | 311 | [
"Civil engineering",
"Fluid mechanics"
] |
22,322,716 | https://en.wikipedia.org/wiki/Dipropylene%20glycol | Dipropylene glycol is a mixture of three isomeric chemical compounds, 4-oxa-2,6-heptandiol, 2-(2-hydroxy-propoxy)-propan-1-ol, and 2-(2-hydroxy-1-methyl-ethoxy)-propan-1-ol. It is a colorless, nearly odorless liquid with a high boiling point and low toxicity.
Uses
Dipropylene glycol finds many uses as a plasticizer, a... | Dipropylene glycol | [
"Chemistry",
"Materials_science"
] | 190 | [
"Monomers",
"Polymer chemistry"
] |
22,323,371 | https://en.wikipedia.org/wiki/Hydrophobicity%20scales | Hydrophobicity scales are values that define the relative hydrophobicity or hydrophilicity of amino acid residues. The more positive the value, the more hydrophobic are the amino acids located in that region of the protein. These scales are commonly used to predict the transmembrane alpha-helices of membrane proteins. ... | Hydrophobicity scales | [
"Physics",
"Chemistry",
"Materials_science",
"Engineering",
"Biology"
] | 2,682 | [
"Molecular physics",
"Applied and interdisciplinary physics",
"Materials science",
"Intermolecular forces",
"Biophysics"
] |
22,324,819 | https://en.wikipedia.org/wiki/Blandford%E2%80%93Znajek%20process | The Blandford–Znajek process is a mechanism for the extraction of energy from a rotating black hole, introduced by Roger Blandford and Roman Znajek in 1977. This mechanism is the most preferred description of how astrophysical jets are formed around spinning supermassive black holes. This is one of the mechanisms that ... | Blandford–Znajek process | [
"Physics",
"Astronomy"
] | 498 | [
"Black holes",
"Physical phenomena",
"Physical quantities",
"Unsolved problems in physics",
"Astrophysics",
"Density",
"Stellar phenomena",
"Astronomical objects"
] |
22,328,498 | https://en.wikipedia.org/wiki/Efferocytosis | In cell biology, efferocytosis (from efferre, Latin for 'to carry out' (to the grave), extended meaning 'to bury') is the process by which apoptotic cells are removed by phagocytic cells. It can be regarded as the 'burying of dead cells'.
During efferocytosis, the cell membrane of phagocytic cells engulfs the apoptoti... | Efferocytosis | [
"Biology"
] | 738 | [
"Cellular processes"
] |
22,330,333 | https://en.wikipedia.org/wiki/Waste%20converter | A waste converter is a machine used for the treatment and recycling of solid and liquid refuse material. A converter is a self-contained system capable of performing the following functions: pasteurization of organic waste; sterilization of pathogenic or biohazard waste; grinding and pulverization of refuse into unreco... | Waste converter | [
"Chemistry",
"Engineering"
] | 3,049 | [
"Water treatment",
"Waste treatment technology",
"Environmental engineering"
] |
22,332,426 | https://en.wikipedia.org/wiki/Perfluorotripentylamine | Perfluorotripentylamine is an organic compound with the chemical formula . A molecule of this chemical compound consists of three pentyl groups connected to one nitrogen atom, in which all of the hydrogen atoms are replaced with fluorine atoms. It is a perfluorocarbon. It is used as an electronics coolant, and has a hi... | Perfluorotripentylamine | [
"Chemistry"
] | 227 | [
"Amines",
"Bases (chemistry)",
"Functional groups"
] |
23,668,054 | https://en.wikipedia.org/wiki/Leslie%20cube | Leslie's cube is a device used in the measurement or demonstration of the variations in thermal radiation emitted from different surfaces at the same temperature.
Device
It was devised in 1804 by John Leslie (1766–1832), a Scottish mathematician and physicist. In the version of the experiment described by John Tyndal... | Leslie cube | [
"Engineering"
] | 593 | [
"Telecommunications engineering",
"Radiometry"
] |
23,669,193 | https://en.wikipedia.org/wiki/Undercut%20%28manufacturing%29 | In manufacturing, an undercut is a special type of recessed surface that is inaccessible using a straight tool. In turning, it refers to a recess in a diameter generally on the inside diameter of the part. In milling, it refers to a feature which is not visible when the part is viewed from the spindle. In molding, it r... | Undercut (manufacturing) | [
"Physics",
"Engineering"
] | 292 | [
"Applied and interdisciplinary physics",
"Mechanical engineering"
] |
23,672,379 | https://en.wikipedia.org/wiki/Agricultural%20machinery | Agricultural machinery relates to the mechanical structures and devices used in farming or other agriculture. There are many types of such equipment, from hand tools and power tools to tractors and the farm implements that they tow or operate. Machinery is used in both organic and nonorganic farming. Especially since t... | Agricultural machinery | [
"Physics",
"Technology",
"Engineering"
] | 2,038 | [
"Physical systems",
"Machines",
"Machinery",
"Mechanical engineering"
] |
23,672,633 | https://en.wikipedia.org/wiki/Wattle%20and%20daub | Wattle and daub is a composite building method used for making walls and buildings, in which a woven lattice of wooden strips called "wattle" is "daubed" with a sticky material usually made of some combination of wet soil, clay, sand, and straw. Wattle and daub has been used for at least 6,000 years and is still an im... | Wattle and daub | [
"Chemistry",
"Technology",
"Engineering"
] | 1,719 | [
"Structural engineering",
"Earth structures",
"Timber framing",
"Building engineering",
"Coatings",
"Structural system",
"Construction",
"Types of wall",
"Civil engineering",
"Plastering",
"Architecture"
] |
18,600,440 | https://en.wikipedia.org/wiki/Osmosis | Osmosis (, ) is the spontaneous net movement or diffusion of solvent molecules through a selectively-permeable membrane from a region of high water potential (region of lower solute concentration) to a region of low water potential (region of higher solute concentration), in the direction that tends to equalize the sol... | Osmosis | [
"Physics",
"Chemistry"
] | 2,446 | [
"Transport phenomena",
"Physical phenomena",
"Diffusion",
"Separation processes",
"Membrane technology",
"Water technology"
] |
18,605,319 | https://en.wikipedia.org/wiki/Quark%E2%80%93gluon%20plasma | Quark–gluon plasma (QGP or quark soup) is an interacting localized assembly of quarks and gluons at thermal (local kinetic) and (close to) chemical (abundance) equilibrium. The word plasma signals that free color charges are allowed. In a 1987 summary, Léon Van Hove pointed out the equivalence of the three terms: quark... | Quark–gluon plasma | [
"Physics",
"Chemistry"
] | 4,787 | [
"Quark matter",
"Phases of matter",
"Astrophysics",
"Exotic matter",
"Nuclear physics",
"Matter"
] |
20,842,009 | https://en.wikipedia.org/wiki/King%20Abdullah%20Canal | The King Abdullah Canal is the largest irrigation canal system in Jordan and runs parallel to the east bank of the Jordan River. It was previously known as the East Ghor Main Canal and renamed in 1987 after Abdullah I of Jordan.
Water sources and technical features
The main water source for the King Abdullah Canal (KA... | King Abdullah Canal | [
"Engineering"
] | 604 | [
"Irrigation projects"
] |
20,842,572 | https://en.wikipedia.org/wiki/Acrylic%20rubber | Acrylic rubber, known by the chemical name alkyl acrylate copolymer (ACM) or the tradename HyTemp, is a type of rubber that has outstanding resistance to hot oil and oxidation. It belongs to specialty rubbers. It has a continuous working temperature of and an intermittent limit of . ACM is polar and lacks unsaturation... | Acrylic rubber | [
"Physics",
"Chemistry"
] | 177 | [
"Materials stubs",
"Synthetic materials",
"Elastomers",
"Materials",
"Matter"
] |
20,845,567 | https://en.wikipedia.org/wiki/Gauge%20gravitation%20theory | In quantum field theory, gauge gravitation theory is the effort to extend Yang–Mills theory, which provides a universal description of the fundamental interactions, to describe gravity.
Gauge gravitation theory should not be confused with the similarly named gauge theory gravity, which is a formulation of (classical) ... | Gauge gravitation theory | [
"Physics"
] | 855 | [
"Theoretical physics",
"Theories of gravity"
] |
20,847,164 | https://en.wikipedia.org/wiki/Stone%20functor | In mathematics, the Stone functor is a functor S: Topop → Bool, where Top is the category of topological spaces and Bool is the category of Boolean algebras and Boolean homomorphisms. It assigns to each topological space X the Boolean algebra S(X) of its clopen subsets, and to each morphism fop: X → Y in Topop (i.e., a... | Stone functor | [
"Mathematics"
] | 194 | [
"Boolean algebra",
"General topology",
"Functions and mappings",
"Mathematical structures",
"Category theory stubs",
"Mathematical logic",
"Mathematical objects",
"Topology stubs",
"Fields of abstract algebra",
"Topology",
"Mathematical relations",
"Category theory",
"Functors"
] |
20,849,954 | https://en.wikipedia.org/wiki/Amino%20acid%20neurotransmitter | An amino acid neurotransmitter is an amino acid which is able to transmit a nerve message across a synapse. Neurotransmitters (chemicals) are packaged into vesicles that cluster beneath the axon terminal membrane on the presynaptic side of a synapse in a process called endocytosis.
Amino acid neurotransmitter releas... | Amino acid neurotransmitter | [
"Chemistry",
"Biology"
] | 177 | [
"Biomolecules by chemical classification",
"Neurotransmitters",
"Amino acids",
"Molecular neuroscience",
"Molecular biology",
"Biochemistry",
"Neurochemistry"
] |
790,283 | https://en.wikipedia.org/wiki/Orders%20of%20magnitude%20%28temperature%29 |
List of orders of magnitude for temperature
Detailed list for 100 K to 1000 K
Most ordinary human activity takes place at temperatures of this order of magnitude. Circumstances where water naturally occurs in liquid form are shown in light grey.
SI multiples
References
External links
Online Temperature Conversion... | Orders of magnitude (temperature) | [
"Physics",
"Chemistry",
"Mathematics"
] | 57 | [
"Physical phenomena",
"Phase transitions",
"Quantity",
"Threshold temperatures",
"Orders of magnitude",
"Units of measurement"
] |
790,468 | https://en.wikipedia.org/wiki/Pulfrich%20effect | The Pulfrich effect is a psychophysical percept wherein lateral motion of an object in the field of view is interpreted by the visual cortex as having a depth component, due to a relative difference in signal timings between the two eyes.
Overview
The effect is generally induced by placing a dark filter over one eye b... | Pulfrich effect | [
"Physics"
] | 1,727 | [
"Optical phenomena",
"Physical phenomena",
"Optical illusions"
] |
790,823 | https://en.wikipedia.org/wiki/Factorial%20moment | In probability theory, the factorial moment is a mathematical quantity defined as the expectation or average of the falling factorial of a random variable. Factorial moments are useful for studying non-negative integer-valued random variables, and arise in the use of probability-generating functions to derive the mome... | Factorial moment | [
"Physics",
"Mathematics"
] | 431 | [
"Mathematical analysis",
"Moments (mathematics)",
"Factorial and binomial topics",
"Physical quantities",
"Combinatorics",
"Moment (physics)"
] |
791,710 | https://en.wikipedia.org/wiki/Partial%20agonist | In pharmacology, partial agonists are drugs that bind to and activate a given receptor, but have only partial efficacy at the receptor relative to a full agonist. They may also be considered ligands which display both agonistic and antagonistic effects—when both a full agonist and partial agonist are present, the parti... | Partial agonist | [
"Chemistry"
] | 362 | [
"Pharmacology",
"Pharmacology stubs",
"Pharmacodynamics",
"Medicinal chemistry stubs"
] |
792,684 | https://en.wikipedia.org/wiki/Granularity | Granularity (also called graininess) is the degree to which a material or system is composed of distinguishable pieces, "granules" or "grains" (metaphorically).
It can either refer to the extent to which a larger entity is subdivided, or the extent to which groups of smaller indistinguishable entities have joined toget... | Granularity | [
"Physics"
] | 1,172 | [
"Statistical mechanics"
] |
793,890 | https://en.wikipedia.org/wiki/Feeder%20line%20%28network%29 | A feeder line is a peripheral route or branch in a network, which connects smaller or more remote nodes with a route or branch carrying heavier traffic. The term is applicable to any system based on a hierarchical network.
In telecommunications, a feeder line branches from a main line or trunk line.
In electrical eng... | Feeder line (network) | [
"Mathematics",
"Engineering"
] | 420 | [
"Network topology",
"Energy engineering",
"Topology",
"Power engineering",
"Electrical engineering"
] |
794,163 | https://en.wikipedia.org/wiki/Annualized%20failure%20rate | Annualized failure rate (AFR) gives the estimated probability that a device or component will fail during a full year of use. It is a relation between the mean time between failure (MTBF) and the hours that a number of devices are run per year. AFR is estimated from a sample of like components—AFR and MTBF as given by... | Annualized failure rate | [
"Technology",
"Engineering"
] | 424 | [
"Systems engineering",
"Reliability engineering",
"Technological failures",
"Engineering failures",
"Civil engineering"
] |
794,330 | https://en.wikipedia.org/wiki/Data%20profiling | Data profiling is the process of examining the data available from an existing information source (e.g. a database or a file) and collecting statistics or informative summaries about that data. The purpose of these statistics may be to:
Find out whether existing data can be easily used for other purposes
Improve the ... | Data profiling | [
"Technology"
] | 863 | [
"Data management",
"Data"
] |
794,346 | https://en.wikipedia.org/wiki/Iconv | In Unix and Unix-like operating systems, iconv (an abbreviation of internationalization conversion) is a command-line program and a standardized application programming interface (API) used to convert between different character encodings. "It can convert from any of these encodings to any other, through Unicode conver... | Iconv | [
"Technology"
] | 525 | [
"IBM i Qshell commands",
"Computing commands"
] |
794,439 | https://en.wikipedia.org/wiki/Sodium%20sulfate | Sodium sulfate (also known as sodium sulphate or sulfate of soda) is the inorganic compound with formula Na2SO4 as well as several related hydrates. All forms are white solids that are highly soluble in water. With an annual production of 6 million tonnes, the decahydrate is a major commodity chemical product. It is ma... | Sodium sulfate | [
"Physics",
"Chemistry"
] | 2,989 | [
"Sulfates",
"Alchemical substances",
"Salts",
"Desiccants",
"Materials",
"Matter"
] |
795,199 | https://en.wikipedia.org/wiki/Breast%20milk | Breast milk (sometimes spelled as breastmilk) or mother's milk is milk produced by the mammary glands in the breasts of women. Breast milk is the primary source of nutrition for newborn infants, comprising fats, proteins, carbohydrates, and a varying composition of minerals and vitamins. Breast milk also contains subst... | Breast milk | [
"Biology"
] | 6,109 | [
"Immunology"
] |
795,334 | https://en.wikipedia.org/wiki/Dislocation | In materials science, a dislocation or Taylor's dislocation is a linear crystallographic defect or irregularity within a crystal structure that contains an abrupt change in the arrangement of atoms. The movement of dislocations allow atoms to slide over each other at low stress levels and is known as glide or slip. The... | Dislocation | [
"Chemistry",
"Materials_science",
"Engineering"
] | 6,030 | [
"Crystallographic defects",
"Crystallography",
"Materials degradation",
"Materials science"
] |
796,240 | https://en.wikipedia.org/wiki/Failover | Failover is switching to a redundant or standby computer server, system, hardware component or network upon the failure or abnormal termination of the previously active application, server, system, hardware component, or network in a computer network. Failover and switchover are essentially the same operation, except t... | Failover | [
"Technology",
"Engineering"
] | 677 | [
"Computer networking",
"Computer engineering",
"Reliability engineering",
"Computer network stubs",
"Computer systems",
"Computer science",
"Fault-tolerant computer systems",
"Computing stubs"
] |
6,242,952 | https://en.wikipedia.org/wiki/Single-base%20extension | Single-base extension (SBE) is a method for determining the identity of a nucleotide base at a specific position along a nucleic acid. The method is used to identify a single-nucleotide polymorphism (SNP).
In the method, an oligonucleotide primer hybridizes to a complementary region along the nucleic acid to form a du... | Single-base extension | [
"Chemistry",
"Engineering",
"Biology"
] | 423 | [
"Biochemistry methods",
"Genetics techniques",
"Genetic engineering",
"Chemical tests",
"Biochemistry detection methods"
] |
6,243,282 | https://en.wikipedia.org/wiki/Meshfree%20methods | In the field of numerical analysis, meshfree methods are those that do not require connection between nodes of the simulation domain, i.e. a mesh, but are rather based on interaction of each node with all its neighbors. As a consequence, original extensive properties such as mass or kinetic energy are no longer assigne... | Meshfree methods | [
"Physics",
"Chemistry",
"Mathematics"
] | 3,054 | [
"Computational fluid dynamics",
"Computational mathematics",
"Computational physics",
"Mathematical relations",
"Numerical analysis",
"Approximations",
"Fluid dynamics"
] |
6,247,207 | https://en.wikipedia.org/wiki/Heteroclinic%20network | In mathematics, a heteroclinic network is an invariant set in the phase space of a dynamical system. It can be thought of loosely as the union of more than one heteroclinic cycle. Heteroclinic networks arise naturally in a number of different types of applications, including fluid dynamics and populations dynamics.
T... | Heteroclinic network | [
"Physics",
"Mathematics"
] | 151 | [
"Mathematical analysis",
"Mechanics",
"Mathematical analysis stubs",
"Dynamical systems"
] |
6,248,163 | https://en.wikipedia.org/wiki/%CE%91-Bungarotoxin | α-Bungarotoxin is one of the bungarotoxins, components of the venom of the elapid Taiwanese banded krait snake (Bungarus multicinctus). It is a type of α-neurotoxin, a neurotoxic protein that is known to bind competitively and in a relatively irreversible manner to the nicotinic acetylcholine receptor found at the neur... | Α-Bungarotoxin | [
"Chemistry"
] | 5,150 | [
"Neurochemistry",
"Neurotoxins"
] |
6,248,586 | https://en.wikipedia.org/wiki/Cistrome | In simple words, the cistrome refers a collection of regulatory elements of a set of genes, including transcription factor binding sites and histone modifications. More specifically, "the set of cis-acting targets of a trans-acting factor on a genome-wide scale, also known as the in vivo genome-wide location of transcr... | Cistrome | [
"Chemistry",
"Biology"
] | 189 | [
"Molecular genetics",
"Molecular biology"
] |
6,248,691 | https://en.wikipedia.org/wiki/Bake-out | Bake-out, in several areas of technology and fabrication, and in building construction, refers to the process of using high heat temperature (heat), and possibly vacuum, to remove volatile compounds from materials and objects before placing them into situations where the slow release of the same volatile compounds woul... | Bake-out | [
"Physics",
"Engineering"
] | 334 | [
"Building engineering",
"Vacuum",
"Vacuum systems",
"Building biology",
"Matter"
] |
6,249,223 | https://en.wikipedia.org/wiki/Bicinchoninic%20acid | Bicinchoninic acid () or BCA is a weak acid composed of two carboxylated quinoline rings. It is an organic compound with the formula (C9H5NCO2H)2. The molecule consists of a pair of quinoline rings, each bearing a carboxylic acid group. Its sodium salt forms a purple complex with cuprous ions.
Bicinchoninic acid is m... | Bicinchoninic acid | [
"Chemistry",
"Materials_science"
] | 206 | [
"Dimers (chemistry)",
"Polymer chemistry"
] |
6,249,365 | https://en.wikipedia.org/wiki/Immunoproteomics | Immunoproteomics is the study of large sets of proteins (proteomics) involved in the immune response.
Examples of common applications of immunoproteomics include:
The isolation and mass spectrometric identification of MHC (major histocompatibility complex) binding peptides
Purification and identification of protein ... | Immunoproteomics | [
"Biology"
] | 816 | [
"Branches of immunology"
] |
6,249,798 | https://en.wikipedia.org/wiki/Gusperimus | Gusperimus is an immunosuppressive drug. It is a derivative of the naturally occurring HSP70 inhibitor spergualin, and inhibits the interleukin-2-stimulated maturation of T cells to the S and G2/M phases and the polarization of the T cells into IFN-gamma-secreting Th1 effector T cells, resulting in the inhibition of gr... | Gusperimus | [
"Chemistry"
] | 1,240 | [
"Guanidines",
"Functional groups"
] |
23,844,274 | https://en.wikipedia.org/wiki/Wynnea%20americana | Wynnea americana, commonly known as moose antlers or rabbit ears, is a species of fungus in the family Sarcoscyphaceae. The uncommon species is recognizable by its spoon-shaped or rabbit ear–shaped fruit bodies that may reach up to tall. It has dark brown and warty outer surfaces, while the fertile spore-bearing inner... | Wynnea americana | [
"Biology"
] | 1,585 | [
"Fungi",
"Fungus species"
] |
23,847,917 | https://en.wikipedia.org/wiki/4D-RCS%20Reference%20Model%20Architecture | The 4D/RCS Reference Model Architecture is a reference model for military unmanned vehicles on how their software components should be identified and organized.
The 4D/RCS has been developed by the Intelligent Systems Division (ISD) of the National Institute of Standards and Technology (NIST) since the 1980s.
This re... | 4D-RCS Reference Model Architecture | [
"Mathematics",
"Technology",
"Engineering"
] | 2,611 | [
"Applied mathematics",
"Control theory",
"Automation",
"Industrial engineering",
"Industrial computing",
"Dynamical systems"
] |
23,850,329 | https://en.wikipedia.org/wiki/International%20conference%20on%20Physics%20of%20Light%E2%80%93Matter%20Coupling%20in%20Nanostructures | The International Conference on Physics of Light–Matter Coupling in Nanostructures (PLMCN) is a yearly academic conference on various topics of semiconductor science and nanophotonics.
Topic
The conferences are devoted to the fundamental and technological issues relevant to the realization of a new generation of opto... | International conference on Physics of Light–Matter Coupling in Nanostructures | [
"Materials_science"
] | 934 | [
"Nanotechnology",
"Nanotechnology institutions"
] |
23,850,944 | https://en.wikipedia.org/wiki/Alpha%20glucan | α-Glucans (alpha-glucans) are polysaccharides of D-glucose monomers
linked with glycosidic bonds of the alpha form. α-Glucans use cofactors in a cofactor site in order to activate a glucan phosphorylase enzyme. This enzyme causes a reaction that transfers a glucosyl portion between orthophosphate and α-I,4-glucan. The... | Alpha glucan | [
"Chemistry",
"Biology"
] | 733 | [
"Carbohydrates",
"Biotechnology stubs",
"Biochemistry stubs",
"Biochemistry",
"Polysaccharides"
] |
23,851,199 | https://en.wikipedia.org/wiki/Observatoire%20Oceanologique%20de%20Villefranche | The Observatoire Oceanologique de Villefranche (Villefranche-sur-Mer Marine Station) is a satellite campus of Sorbonne University (Sorbonne Faculty of Science and Engineering) in Villefranche-sur-Mer on the Côte d'Azur, France. It houses two research/teaching laboratories co-administered by Sorbonne University and the ... | Observatoire Oceanologique de Villefranche | [
"Physics",
"Environmental_science"
] | 1,008 | [
"Oceanography",
"Hydrology",
"Applied and interdisciplinary physics"
] |
23,852,047 | https://en.wikipedia.org/wiki/Asymptotic%20homogenization | In mathematics and physics, homogenization is a method of studying partial differential equations with rapidly oscillating coefficients, such as
where is a very small parameter and
is a 1-periodic coefficient:
,
.
It turns out that the study of these equations is also of great importance in physics and engineeri... | Asymptotic homogenization | [
"Mathematics"
] | 672 | [
"Mathematical analysis",
"Asymptotic analysis"
] |
12,877,572 | https://en.wikipedia.org/wiki/Fan%20%28machine%29 | A fan is a powered machine that creates airflow. A fan consists of rotating vanes or blades, generally made of wood, plastic, or metal, which act on the air. The rotating assembly of blades and hub is known as an impeller, rotor, or runner. Usually, it is contained within some form of housing, or case. This may direct ... | Fan (machine) | [
"Physics",
"Chemistry",
"Mathematics",
"Engineering"
] | 5,093 | [
"Applied and interdisciplinary physics",
"Turbomachinery",
"Gas compressors",
"Dynamical systems",
"Chemical equipment",
"Chemical engineering",
"Aerospace engineering",
"Turbines",
"Aerodynamics",
"Thermodynamics",
"Mechanical engineering",
"nan",
"Piping",
"Fluid dynamics"
] |
12,880,414 | https://en.wikipedia.org/wiki/Appleton%E2%80%93Hartree%20equation | The Appleton–Hartree equation, sometimes also referred to as the Appleton–Lassen equation, is a mathematical expression that describes the refractive index for electromagnetic wave propagation in a cold magnetized plasma. The Appleton–Hartree equation was developed independently by several different scientists, includi... | Appleton–Hartree equation | [
"Physics"
] | 588 | [
"Waves in plasmas",
"Physical phenomena",
"Equations of physics",
"Electromagnetic radiation",
"Plasma phenomena",
"Waves",
"Radiation",
"Plasma physics equations"
] |
19,683,347 | https://en.wikipedia.org/wiki/Fayet%E2%80%93Iliopoulos%20D-term | In theoretical physics, the Fayet–Iliopoulos D-term (introduced by Pierre Fayet and John Iliopoulos) is a D-term in a supersymmetric theory obtained from a vector superfield V simply by an integral over all of superspace:
Because a natural trace must be a part of the expression, the action only exists for U(1) vector... | Fayet–Iliopoulos D-term | [
"Physics"
] | 145 | [
"Supersymmetric quantum field theory",
"Quantum physics stubs",
"Quantum mechanics",
"Supersymmetry",
"Symmetry"
] |
19,683,961 | https://en.wikipedia.org/wiki/Solvent%20casting%20and%20particulate%20leaching | In solvent casting and particulate leaching (SCPL), a polymer is dissolved in an organic solvent. Particles, mainly salts, with specific dimensions are then added to the solution. The mixture is shaped into its final geometry. For example, it can be cast onto a glass plate to produce a membrane or in a three-dimensiona... | Solvent casting and particulate leaching | [
"Chemistry",
"Materials_science"
] | 124 | [
"Polymers",
"Polymer chemistry"
] |
19,688,599 | https://en.wikipedia.org/wiki/Offset%20agreement | Offsets are compensatory trade agreements, reciprocal trade agreements, between an exporting foreign company, or possibly a government acting as intermediary, and an importing entity. Offset agreements often involve trade in military goods and services and are alternatively called: industrial compensations, industrial ... | Offset agreement | [
"Physics"
] | 13,365 | [
"Spacetime",
"Space",
"Aerospace"
] |
19,690,563 | https://en.wikipedia.org/wiki/Stichodactyla%20toxin | Stichodactyla toxin (ShK, ShkT) is a 35-residue basic peptide from the sea anemone Stichodactyla helianthus that blocks a number of potassium channels. Related peptides form a conserved family of protein domains known as the ShkT domain. Another well-studied toxin of the family is BgK from Bunodosoma granulifera.
An a... | Stichodactyla toxin | [
"Chemistry",
"Biology"
] | 6,600 | [
"Neurochemistry",
"Neurotoxins",
"Cysteine-rich proteins",
"Protein classification"
] |
8,232,682 | https://en.wikipedia.org/wiki/Robust%20optimization | Robust optimization is a field of mathematical optimization theory that deals with optimization problems in which a certain measure of robustness is sought against uncertainty that can be represented as deterministic variability in the value of the parameters of the problem itself and/or its solution. It is related to,... | Robust optimization | [
"Mathematics"
] | 1,765 | [
"Mathematical optimization",
"Mathematical analysis"
] |
8,233,045 | https://en.wikipedia.org/wiki/Loomis%E2%80%93Whitney%20inequality | In mathematics, the Loomis–Whitney inequality is a result in geometry, which in its simplest form, allows one to estimate the "size" of a -dimensional set by the sizes of its -dimensional projections. The inequality has applications in incidence geometry, the study of so-called "lattice animals", and other areas.
The ... | Loomis–Whitney inequality | [
"Mathematics"
] | 398 | [
"Combinatorics",
"Geometric inequalities",
"Inequalities (mathematics)",
"Theorems in geometry",
"Incidence geometry"
] |
8,236,444 | https://en.wikipedia.org/wiki/Sommerfeld%E2%80%93Kossel%20displacement%20law | The Sommerfeld–Kossel displacement law states that the first spark (singly ionized) spectrum of an element is similar in all details to the arc (neutral) spectrum of the element preceding it in the periodic table. Likewise, the second (doubly ionized) spark spectrum of an element is similar in all details to the first... | Sommerfeld–Kossel displacement law | [
"Physics",
"Chemistry"
] | 356 | [
"Molecular physics",
"Spectrum (physical sciences)",
"Instrumental analysis",
"Theoretical physics",
"Quantum mechanics",
" molecular",
"Atomic physics",
"Atomic",
"Spectroscopy",
" and optical physics"
] |
8,236,934 | https://en.wikipedia.org/wiki/Direct%20analysis%20in%20real%20time | In mass spectrometry, direct analysis in real time (DART) is an ion source that produces electronically or vibronically excited-state species from gases such as helium, argon, or nitrogen that ionize atmospheric molecules or dopant molecules. The ions generated from atmospheric or dopant molecules undergo ion-molecule... | Direct analysis in real time | [
"Physics",
"Technology",
"Engineering"
] | 2,688 | [
"Ion source",
"Mass spectrometry",
"Spectrum (physical sciences)",
"Measuring instruments"
] |
8,238,015 | https://en.wikipedia.org/wiki/Fruit%20rot | Fruit rot disease may refer to:
Phomopsis leaf caused in grapes by Phomopsis viticola;
Kole-roga caused in coconut and betel nut by Phytophthora palmivora;
Botrytis bunch rot caused by Botrytis cinerea primarily in grapes;
Black mold caused by Aspergillus niger;
Leaf spot, and others, caused by Alternaria alterna... | Fruit rot | [
"Biology"
] | 211 | [
"Set index articles on fungus common names",
"Set index articles on organisms"
] |
8,238,464 | https://en.wikipedia.org/wiki/Black%20Data%20Processing%20Associates | Black Data Processing Associates (BDPA) is an American non-profit organization that serves the professional well-being of African Americans and other minorities working within technology. BDPA provides resources that support the professional growth and technical development of minority individuals in the information te... | Black Data Processing Associates | [
"Technology"
] | 416 | [
"Diversity in computing",
"Data",
"Computing and society",
"Data activism",
"Data and information organizations"
] |
8,240,558 | https://en.wikipedia.org/wiki/Line%E2%80%93line%20intersection | In Euclidean geometry, the intersection of a line and a line can be the empty set, a point, or another line. Distinguishing these cases and finding the intersection have uses, for example, in computer graphics, motion planning, and collision detection.
In three-dimensional Euclidean geometry, if two lines are not in t... | Line–line intersection | [
"Mathematics"
] | 1,689 | [
"Linear algebra",
"Algebra"
] |
4,780,628 | https://en.wikipedia.org/wiki/Change%20management%20%28engineering%29 | The change request management process in systems engineering is the process of requesting, determining attainability, planning, implementing, and evaluating of changes to a system. Its main goals are to support the processing and traceability of changes to an interconnected set of factors.
Introduction
There is consid... | Change management (engineering) | [
"Chemistry",
"Engineering"
] | 2,236 | [
"Chemical process engineering",
"Systems engineering",
"Safety engineering",
"Process safety"
] |
4,781,152 | https://en.wikipedia.org/wiki/Stair%20lift | A stair lift is a mechanical device for lifting people, typically those with disabilities, up and down stairs. For sufficiently wide stairs, a rail is mounted to the treads of the stairs. A chair or lifting platform is attached to the rail. A person gets onto the chair or platform and is lifted up or down the stairs by... | Stair lift | [
"Technology",
"Engineering"
] | 3,061 | [
"Building engineering",
"Vertical transport devices",
"Transport systems",
"Elevators"
] |
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