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 |
|---|---|---|---|---|---|---|
27,461,135 | https://en.wikipedia.org/wiki/Unified%20Communications%20Interoperability%20Forum | The Unified Communications Interoperability Forum (UCIF) is a non-profit alliance between communications technology vendors. It was announced on May 19, 2010, with the vision to maximize the interoperability of UC based on existing standards. Founding members of UCIF were HP, Microsoft, Polycom, Logitech / LifeSize C... | Unified Communications Interoperability Forum | [
"Engineering"
] | 439 | [
"Human–computer interaction",
"Human–machine interaction"
] |
27,461,561 | https://en.wikipedia.org/wiki/Theories%20of%20cloaking | Theories of cloaking discusses various theories based on science and research, for producing an electromagnetic cloaking device. Theories presented employ transformation optics, event cloaking, dipolar scattering cancellation, tunneling light transmittance, sensors and active sources, and acoustic cloaking.
A cloakin... | Theories of cloaking | [
"Physics",
"Materials_science",
"Engineering"
] | 2,494 | [
"Theoretical physics",
"Metamaterials",
"Materials science"
] |
27,467,080 | https://en.wikipedia.org/wiki/Abramov%20reaction | The Abramov reaction is the related conversions of trialkyl to α-hydroxy phosphonates by the addition to carbonyl compounds. In terms of mechanism, the reaction involves attack of the nucleophilic phosphorus atom on the carbonyl carbon. It was named after the Russian chemist Vasilii Semenovich Abramov (1904–1968) in 1... | Abramov reaction | [
"Chemistry"
] | 1,243 | [
"Coupling reactions",
"Name reactions",
"Organic reactions"
] |
27,470,361 | https://en.wikipedia.org/wiki/Electrophilic%20amination | Electrophilic amination is a chemical process involving the formation of a carbon–nitrogen bond through the reaction of a nucleophilic carbanion with an electrophilic source of nitrogen.
Introduction
Electrophilic amination reactions can be classified as either additions or substitutions. Although the resulting produc... | Electrophilic amination | [
"Chemistry"
] | 1,813 | [
"Organic reactions"
] |
27,470,863 | https://en.wikipedia.org/wiki/Transformation%20optics | Transformation optics is a branch of optics which applies metamaterials to produce spatial variations, derived from coordinate transformations, which can direct chosen bandwidths of electromagnetic radiation. This can allow for the construction of new composite artificial devices, which probably could not exist without... | Transformation optics | [
"Physics",
"Materials_science",
"Engineering"
] | 2,995 | [
"Electromagnetism",
"Physical phenomena",
"Metamaterials",
"Materials science",
"Fundamental interactions"
] |
32,809,163 | https://en.wikipedia.org/wiki/Henry%20Clay%20Furnace | Henry Clay Furnace is an historic iron furnace located in Cooper's Rock State Forest near Cheat Neck, Monongalia County, West Virginia. It was built between 1834 and 1836 by Leonard Lamb. It is a 30-foot square, 30 feet high stone structure in the shape of a truncated pyramid. It was the first steam-powered blast furna... | Henry Clay Furnace | [
"Chemistry"
] | 306 | [
"Metallurgical processes",
"Industrial furnaces"
] |
32,814,049 | https://en.wikipedia.org/wiki/Flux%20switching%20alternator | A flux switching alternator is a form of high-speed alternator, an AC electrical generator, intended for direct drive by a turbine. They are simple in design with the rotor containing no coils or magnets, making them rugged and capable of high rotation speeds. This makes them suitable for their only widespread use, in ... | Flux switching alternator | [
"Physics",
"Technology"
] | 1,520 | [
"Physical systems",
"Electrical generators",
"Machines"
] |
32,816,134 | https://en.wikipedia.org/wiki/List%20of%20Folding%40home%20cores | The distributed-computing project Folding@home uses scientific computer programs, referred to as "cores" or "fahcores", to perform calculations. Folding@home's cores are based on modified and optimized versions of molecular simulation programs for calculation, including TINKER, GROMACS, AMBER, CPMD, SHARPEN, ProtoMol, ... | List of Folding@home cores | [
"Chemistry",
"Mathematics",
"Biology"
] | 2,720 | [
"Molecular dynamics software",
"Molecular modelling software",
"Computational chemistry software",
"Mathematical and theoretical biology",
"Applied mathematics",
"Theoretical chemistry",
"Computational chemistry",
"Molecular modelling",
"Molecular dynamics",
"Computational biology"
] |
3,734,039 | https://en.wikipedia.org/wiki/ANOVA%20gauge%20R%26R | ANOVA gauge repeatability and reproducibility is a measurement systems analysis technique that uses an analysis of variance (ANOVA) random effects model to assess a measurement system.
The evaluation of a measurement system is not limited to gauge but to all types of measuring instruments, test methods, and other meas... | ANOVA gauge R&R | [
"Physics",
"Mathematics"
] | 1,117 | [
"Quantity",
"Physical quantities",
"Measurement",
"Size"
] |
3,735,260 | https://en.wikipedia.org/wiki/Tetrahedral-octahedral%20honeycomb | The tetrahedral-octahedral honeycomb, alternated cubic honeycomb is a quasiregular space-filling tessellation (or honeycomb) in Euclidean 3-space. It is composed of alternating regular octahedra and tetrahedra in a ratio of 1:2.
Other names include half cubic honeycomb, half cubic cellulation, or tetragonal disphenoi... | Tetrahedral-octahedral honeycomb | [
"Physics"
] | 3,278 | [
"Uniform 4-polytopes",
"Uniform polytopes",
"Symmetry"
] |
25,631,381 | https://en.wikipedia.org/wiki/Friedel%20oscillations | Friedel oscillations, named after French physicist Jacques Friedel, arise from localized perturbations in a metallic or semiconductor system caused by a defect in the Fermi gas or Fermi liquid. Friedel oscillations are a quantum mechanical analog to electric charge screening of charged species in a pool of ions. Wherea... | Friedel oscillations | [
"Physics",
"Chemistry",
"Materials_science",
"Engineering"
] | 1,065 | [
"Phases of matter",
"Condensed matter physics",
"Matter",
"Materials science"
] |
6,657,332 | https://en.wikipedia.org/wiki/Gromov%27s%20compactness%20theorem%20%28topology%29 | In the mathematical field of symplectic topology, Gromov's compactness theorem states that a sequence of pseudoholomorphic curves in an almost complex manifold with a uniform energy bound must have a subsequence which limits to a pseudoholomorphic curve which may have nodes or (a finite tree of) "bubbles". A bubble is... | Gromov's compactness theorem (topology) | [
"Mathematics"
] | 290 | [
"Compactness theorems",
"Mathematical theorems",
"Theorems in topology",
"Topology stubs",
"Topology",
"Mathematical problems"
] |
6,657,904 | https://en.wikipedia.org/wiki/Etynodiol%20diacetate | Etynodiol diacetate, or ethynodiol diacetate, sold under the brand name Ovulen among others, is a progestin medication which is used in birth control pills. The medication is available only in combination with an estrogen. It is taken by mouth.
Etynodiol diacetate is a progestin, or a synthetic progestogen, and hence ... | Etynodiol diacetate | [
"Chemistry"
] | 1,154 | [
"Chemicals in medicine",
"Prodrugs"
] |
6,657,908 | https://en.wikipedia.org/wiki/Etynodiol | Etynodiol, or ethynodiol, is a steroidal progestin of the 19-nortestosterone group which was never marketed. A diacylated derivative, etynodiol diacetate, is used as a hormonal contraceptive. Etynodiol is sometimes used as a synonym for etynodiol diacetate.
It was patented in 1955.
Pharmacology
Etynodiol is a prodrug... | Etynodiol | [
"Chemistry"
] | 288 | [
"Chemicals in medicine",
"Prodrugs"
] |
6,657,979 | https://en.wikipedia.org/wiki/Norethisterone | Norethisterone, also known as norethindrone and sold under the brand name Norlutin among others, is a progestin medication used in birth control pills, menopausal hormone therapy, and for the treatment of gynecological disorders. The medication is available in both low-dose and high-dose formulations and both alone and... | Norethisterone | [
"Chemistry"
] | 7,917 | [
"Chemicals in medicine",
"Human drug metabolites"
] |
6,660,265 | https://en.wikipedia.org/wiki/Equilibrium%20unfolding | In biochemistry, equilibrium unfolding is the process of unfolding a protein or RNA molecule by gradually changing its environment, such as by changing the temperature or pressure, pH, adding chemical denaturants, or applying force as with an atomic force microscope tip. If the equilibrium was maintained at all steps, ... | Equilibrium unfolding | [
"Chemistry"
] | 2,679 | [
"Equilibrium chemistry",
"Protein structure",
"Structural biology"
] |
6,661,744 | https://en.wikipedia.org/wiki/Chemical%20modification | Chemical modification refers to a number of various processes involving the alteration of the chemical constitution or structure of molecules.
Chemical modification of proteins
Chemical modification is the change of biomolecular structure and function due to the addition or removal of modifying elements. This is us... | Chemical modification | [
"Chemistry"
] | 1,757 | [
"Protein structure",
"Structural biology"
] |
6,662,023 | https://en.wikipedia.org/wiki/Formestane | Formestane, formerly sold under the brand name Lentaron among others, is a steroidal, selective aromatase inhibitor which is used in the treatment of estrogen receptor-positive breast cancer in postmenopausal women. The drug is not active orally, and was available only as an intramuscular depot injection. Formestane wa... | Formestane | [
"Chemistry"
] | 219 | [
"Enols",
"Functional groups"
] |
6,662,400 | https://en.wikipedia.org/wiki/Dienestrol | Dienestrol (, ) (brand names Dienoestrol, Denestrolin, Dienol and many others), also known as dienoestrol (), is a synthetic nonsteroidal estrogen medication of the stilbestrol group which is or was used to treat menopausal symptoms in the United States and Europe. It has been studied for use by rectal administration i... | Dienestrol | [
"Chemistry"
] | 234 | [
"Drug safety",
"Abandoned drugs"
] |
6,664,738 | https://en.wikipedia.org/wiki/Laccase | Laccases () are multicopper oxidases found in plants, fungi, and bacteria. Laccases oxidize a variety of phenolic substrates, performing one-electron oxidations, leading to crosslinking. For example, laccases play a role in the formation of lignin by promoting the oxidative coupling of monolignols, a family of natural... | Laccase | [
"Chemistry"
] | 1,245 | [
"Biomolecules by chemical classification",
"Proteins",
"Molecular biology"
] |
6,665,878 | https://en.wikipedia.org/wiki/Phraselator | The Phraselator is a weatherproof handheld language translation device developed by Applied Data Systems and VoxTec, a former division of the military contractor Marine Acoustics, located in Annapolis, Maryland, USA. It was designed to serve as a handheld computer device that translates English into one of 40 different... | Phraselator | [
"Technology"
] | 1,274 | [
"Machine translation",
"Natural language and computing",
"Computer-assisted translation"
] |
2,771,364 | https://en.wikipedia.org/wiki/Giuga%20number | In number theory, a Giuga number is a composite number such that for each of its distinct prime factors we have , or equivalently such that for each of its distinct prime factors pi we have .
The Giuga numbers are named after the mathematician Giuseppe Giuga, and relate to his conjecture on primality.
Definitions ... | Giuga number | [
"Mathematics"
] | 644 | [
"Sequences and series",
"Unsolved problems in mathematics",
"Integer sequences",
"Mathematical structures",
"Recreational mathematics",
"Mathematical objects",
"Unsolved problems in number theory",
"Combinatorics",
"Mathematical problems",
"Numbers",
"Number theory"
] |
2,772,921 | https://en.wikipedia.org/wiki/G%20Scorpii | G Scorpii (abbreviated G Sco), also named Fuyue, is a giant star in the constellation of Scorpius. It has an apparent magnitude of +3.19. It is approximately 126 light-years from the Sun.
Nomenclature
G Scorpii is the star's Bayer designation. It was formerly situated in the constellation of Telescopium where it was... | G Scorpii | [
"Astronomy"
] | 373 | [
"Scorpius",
"Constellations"
] |
2,774,201 | https://en.wikipedia.org/wiki/Boiler%20explosion | A boiler explosion is a catastrophic failure of a boiler.
There are two types of boiler explosions. One type is a failure of the pressure parts of the steam and water sides. There can be many different causes, such as failure of the safety valve, corrosion of critical parts of the boiler, or low water level. Corrosion... | Boiler explosion | [
"Physics",
"Chemistry",
"Engineering"
] | 3,933 | [
"Explosion protection",
"Physical quantities",
"Steam power",
"Combustion engineering",
"Power (physics)",
"Explosions",
"Boilers",
"Pressure vessels"
] |
2,775,268 | https://en.wikipedia.org/wiki/Refinement%20calculus | The refinement calculus is a formalized approach to stepwise refinement for program construction. The required behaviour of the final executable program is specified as an abstract and perhaps non-executable "program", which is then refined by a series of correctness-preserving transformations into an efficiently execu... | Refinement calculus | [
"Mathematics",
"Engineering"
] | 241 | [
"Software engineering",
"Mathematical logic",
"Logical calculi",
"Formal methods"
] |
30,208,106 | https://en.wikipedia.org/wiki/Erd%C5%91s%E2%80%93Gallai%20theorem | The Erdős–Gallai theorem is a result in graph theory, a branch of combinatorial mathematics. It provides one of two known approaches to solving the graph realization problem, i.e. it gives a necessary and sufficient condition for a finite sequence of natural numbers to be the degree sequence of a simple graph. A sequen... | Erdős–Gallai theorem | [
"Mathematics"
] | 988 | [
"Theorems in graph theory",
"Theorems in discrete mathematics"
] |
30,220,726 | https://en.wikipedia.org/wiki/Quasisymmetric%20map | In mathematics, a quasisymmetric homeomorphism between metric spaces is a map that generalizes bi-Lipschitz maps. While bi-Lipschitz maps shrink or expand the diameter of a set by no more than a multiplicative factor, quasisymmetric maps satisfy the weaker geometric property that they preserve the relative sizes of set... | Quasisymmetric map | [
"Mathematics"
] | 947 | [
"Mathematical analysis",
"Topology",
"Homeomorphisms",
"Geometry"
] |
34,310,141 | https://en.wikipedia.org/wiki/Tests%20of%20relativistic%20energy%20and%20momentum | Tests of relativistic energy and momentum are aimed at measuring the relativistic expressions for energy, momentum, and mass. According to special relativity, the properties of particles moving approximately at the speed of light significantly deviate from the predictions of Newtonian mechanics. For instance, the speed... | Tests of relativistic energy and momentum | [
"Physics",
"Mathematics"
] | 2,818 | [
"Physical quantities",
"Physics experiments",
"Quantity",
"Special relativity",
"Experimental physics",
"Theory of relativity",
"Momentum",
"Moment (physics)"
] |
34,311,590 | https://en.wikipedia.org/wiki/FCC%20mark | The FCC logo or the FCC mark is a voluntary mark employed on electronic products manufactured or sold in the United States which indicates that the electromagnetic radiation from the device is below the limits specified by the Federal Communications Commission and the manufacturer has followed the requirements of the S... | FCC mark | [
"Mathematics",
"Engineering"
] | 551 | [
"Radio electronics",
"Electromagnetic compatibility",
"Symbols",
"Electrical engineering",
"Certification marks"
] |
34,317,494 | https://en.wikipedia.org/wiki/QED%20vacuum | The QED vacuum or quantum electrodynamic vacuum is the field-theoretic vacuum of quantum electrodynamics. It is the lowest energy state (the ground state) of the electromagnetic field when the fields are quantized. When the Planck constant is hypothetically allowed to approach zero, QED vacuum is converted to classical... | QED vacuum | [
"Physics",
"Mathematics"
] | 1,222 | [
"Electromagnetism",
"Physical phenomena",
"Physical quantities",
"Electromagnetic radiation",
"Quantity",
"Vacuum",
"Energy (physics)",
"Radiation",
"Fundamental interactions",
"nan",
"Wikipedia categories named after physical quantities",
"Matter"
] |
22,707,107 | https://en.wikipedia.org/wiki/Strain%20%28mechanics%29 | In mechanics, strain is defined as relative deformation, compared to a position configuration. Different equivalent choices may be made for the expression of a strain field depending on whether it is defined with respect to the initial or the final configuration of the body and on whether the metric tensor or its dual... | Strain (mechanics) | [
"Physics",
"Materials_science",
"Mathematics",
"Engineering"
] | 1,865 | [
"Solid mechanics",
"Tensors",
"Physical quantities",
"Continuum mechanics",
"Deformation (mechanics)",
"Quantity",
"Classical mechanics",
"Materials science",
"Mechanics",
"Dimensionless quantities"
] |
22,710,151 | https://en.wikipedia.org/wiki/Hydrological%20optimization | Hydrological optimization applies mathematical optimization techniques (such as dynamic programming, linear programming, integer programming, or quadratic programming) to water-related problems. These problems may be for surface water, groundwater, or the combination. The work is interdisciplinary, and may be done by h... | Hydrological optimization | [
"Physics",
"Chemistry",
"Mathematics",
"Engineering",
"Environmental_science"
] | 764 | [
"Hydrology",
"Mathematical analysis",
"Physical systems",
"Hydraulics",
"Civil engineering",
"Environmental engineering",
"Mathematical optimization",
"Hydraulic engineering",
"Fluid dynamics"
] |
5,060,723 | https://en.wikipedia.org/wiki/Signal%20conditioning | In electronics and signal processing, signal conditioning is the manipulation of an analog signal in such a way that it meets the requirements of the next stage for further processing.
In an analog-to-digital converter (ADC) application, signal conditioning includes voltage or current limiting and anti-aliasing filte... | Signal conditioning | [
"Engineering"
] | 939 | [
"Electrical engineering"
] |
5,061,875 | https://en.wikipedia.org/wiki/Journal%20of%20the%20American%20Society%20for%20Mass%20Spectrometry | The Journal of the American Society for Mass Spectrometry is a monthly peer-reviewed scientific journal published by ACS Publications since 2020. From 2011 to 2019 it was published by Springer Science+Business Media and prior to that by Elsevier. It is the official publication of the American Society for Mass Spectrome... | Journal of the American Society for Mass Spectrometry | [
"Physics",
"Chemistry"
] | 164 | [
"Spectrum (physical sciences)",
"Biochemistry journal stubs",
"Biochemistry stubs",
"Mass spectrometry",
"Mass spectrometry journals"
] |
5,063,146 | https://en.wikipedia.org/wiki/Applied%20general%20equilibrium | In mathematical economics, applied general equilibrium (AGE) models were pioneered by Herbert Scarf at Yale University in 1967, in two papers, and a follow-up book with Terje Hansen in 1973, with the aim of empirically estimating the Arrow–Debreu model of general equilibrium theory with empirical data, to provide "“a g... | Applied general equilibrium | [
"Mathematics"
] | 1,086 | [
"Fixed points (mathematics)",
"Mathematical analysis",
"Topology",
"Dynamical systems"
] |
5,063,437 | https://en.wikipedia.org/wiki/Potassium%20persulfate | Potassium persulfate is the inorganic compound with the formula K2S2O8. Also known as potassium peroxydisulfate, it is a white solid that is sparingly soluble in cold water, but dissolves better in warm water. This salt is a powerful oxidant, commonly used to initiate polymerizations.
Structure
The sodium and potassiu... | Potassium persulfate | [
"Chemistry",
"Materials_science"
] | 488 | [
"Redox",
"Radical initiators",
"Oxidizing agents",
"Polymer chemistry",
"Reagents for organic chemistry",
"Persulfates"
] |
5,064,357 | https://en.wikipedia.org/wiki/Nickel%28II%29%20oxide | Nickel(II) oxide is the chemical compound with the formula . It is the principal oxide of nickel. It is classified as a basic metal oxide. Several million kilograms are produced annually of varying quality, mainly as an intermediate in the production of nickel alloys. The mineralogical form of , bunsenite, is very rar... | Nickel(II) oxide | [
"Chemistry"
] | 1,055 | [
"Non-stoichiometric compounds",
"Hydrogenation catalysts",
"Hydrogenation"
] |
5,065,725 | https://en.wikipedia.org/wiki/Methyltransferase | Methyltransferases are a large group of enzymes that all methylate their substrates but can be split into several subclasses based on their structural features. The most common class of methyltransferases is class I, all of which contain a Rossmann fold for binding S-Adenosyl methionine (SAM). Class II methyltransferas... | Methyltransferase | [
"Chemistry"
] | 3,329 | [
"Methylation"
] |
5,065,981 | https://en.wikipedia.org/wiki/Hydrodynamic%20radius | The hydrodynamic radius of a macromolecule or colloid particle is . The macromolecule or colloid particle is a collection of subparticles. This is done most commonly for polymers; the subparticles would then be the units of the polymer. For polymers in solution, is defined by
where is the distance between subpar... | Hydrodynamic radius | [
"Chemistry",
"Materials_science"
] | 441 | [
"Polymer physics",
"Polymer chemistry"
] |
5,065,997 | https://en.wikipedia.org/wiki/Zirconium%28IV%29%20silicate | Zirconium silicate, also zirconium orthosilicate, ZrSiO4, is a chemical compound, a silicate of zirconium. It occurs in nature as zircon, a silicate mineral. Powdered zirconium silicate is also known as zircon flour.
Zirconium silicate is usually colorless, but impurities induce various colorations. It is insoluble in... | Zirconium(IV) silicate | [
"Physics"
] | 649 | [
"Refractory materials",
"Materials",
"Matter"
] |
5,066,036 | https://en.wikipedia.org/wiki/Unihemispheric%20slow-wave%20sleep | Unihemispheric slow-wave sleep (USWS) is sleep where one half of the brain rests while the other half remains alert. This is in contrast to normal sleep where both eyes are shut and both halves of the brain show unconsciousness. In USWS, also known as asymmetric slow-wave sleep, one half of the brain is in deep sleep, ... | Unihemispheric slow-wave sleep | [
"Biology"
] | 3,907 | [
"Behavior",
"Sleep physiology",
"Sleep"
] |
5,066,403 | https://en.wikipedia.org/wiki/Firefly%20luciferin | Firefly luciferin (also known as beetle luciferin) is the luciferin, precursor of the light-emitting compound, used for the firefly (Lampyridae), railroad worm (Phengodidae), starworm (Rhagophthalmidae), and click-beetle (Pyrophorini) bioluminescent systems. It is the substrate of firefly luciferase (EC 1.13.12.7), whi... | Firefly luciferin | [
"Chemistry",
"Biology"
] | 894 | [
"Luminescence",
"Carboxylic acids",
"Functional groups",
"Luciferins",
"Biochemical reactions",
"Biochemistry",
"Bioluminescence"
] |
5,066,430 | https://en.wikipedia.org/wiki/Gyration%20tensor | In physics, the gyration tensor is a tensor that describes the second moments of position of a collection of particles
where is the
Cartesian coordinate of the position vector of the
particle. The origin of the coordinate system has been chosen such that
i.e. in the system of the center of mass . Where
Anothe... | Gyration tensor | [
"Chemistry",
"Materials_science",
"Engineering"
] | 515 | [
"Polymer physics",
"Tensors",
"Polymer chemistry"
] |
5,066,836 | https://en.wikipedia.org/wiki/Coordinated%20flight | In aviation, coordinated flight of an aircraft is flight without sideslip.
When an aircraft is flying with zero sideslip a turn and bank indicator installed on the aircraft's instrument panel usually shows the ball in the center of the spirit level. The occupants perceive no lateral acceleration of the aircraft and ... | Coordinated flight | [
"Chemistry",
"Engineering"
] | 509 | [
"Aerospace engineering",
"Aerodynamics",
"Fluid dynamics"
] |
21,241,712 | https://en.wikipedia.org/wiki/Bipartite%20double%20cover | In graph theory, the bipartite double cover of an undirected graph is a bipartite, covering graph of , with twice as many vertices as . It can be constructed as the tensor product of graphs, . It is also called the Kronecker double cover, canonical double cover or simply the bipartite double of .
It should not be con... | Bipartite double cover | [
"Mathematics"
] | 1,479 | [
"Mathematical relations",
"Graph theory",
"Graph operations"
] |
21,242,503 | https://en.wikipedia.org/wiki/International%20Conference%20of%20Physics%20Students | The International Conference of Physics Students (ICPS) is an annual conference of the International Association of Physics Students (IAPS). Usually, up to 500 students from all over the world attend the event, which takes place in another country every year in August. The event includes the opportunity for students a... | International Conference of Physics Students | [
"Physics"
] | 1,238 | [
"Applied and interdisciplinary physics",
"Physics education"
] |
21,243,458 | https://en.wikipedia.org/wiki/Datakit | Datakit is a virtual circuit switch which was developed by Sandy Fraser at Bell Labs for both local-area and wide-area networks, and in widespread deployment by the Regional Bell Operating Companies (RBOCs).
Design
Datakit uses a cell relay protocol similar to Asynchronous Transfer Mode. Datakit is a connection-orie... | Datakit | [
"Technology",
"Engineering"
] | 662 | [
"Computer networking",
"Computer science",
"Computer engineering"
] |
21,245,430 | https://en.wikipedia.org/wiki/Coriolis%E2%80%93Stokes%20force | In fluid dynamics, the Coriolis–Stokes force is a forcing of the mean flow in a rotating fluid due to interaction of the Coriolis effect and wave-induced Stokes drift. This force acts on water independently of the wind stress.
This force is named after Gaspard-Gustave Coriolis and George Gabriel Stokes, two nineteenth... | Coriolis–Stokes force | [
"Physics",
"Chemistry",
"Engineering"
] | 332 | [
"Physical phenomena",
"Water waves",
"Chemical engineering",
"Waves",
"Piping",
"Fluid dynamics"
] |
21,245,707 | https://en.wikipedia.org/wiki/Red%20giant | A red giant is a luminous giant star of low or intermediate mass (roughly 0.3–8 solar masses ()) in a late phase of stellar evolution. The outer atmosphere is inflated and tenuous, making the radius large and the surface temperature around or lower. The appearance of the red giant is from yellow-white to reddish-orang... | Red giant | [
"Physics",
"Astronomy"
] | 2,850 | [
"Astronomical sub-disciplines",
"Star types",
"Astrophysics",
"Astronomical classification systems"
] |
31,331,135 | https://en.wikipedia.org/wiki/Wafer%20bonding | Wafer bonding is a packaging technology on wafer-level for the fabrication of microelectromechanical systems (MEMS), nanoelectromechanical systems (NEMS), microelectronics and optoelectronics, ensuring a mechanically stable and hermetically sealed encapsulation. The wafers' diameter range from 100 mm to 200 mm (4 inch ... | Wafer bonding | [
"Physics",
"Chemistry",
"Materials_science",
"Engineering"
] | 561 | [
"Semiconductor technology",
"Electronics manufacturing",
"Microtechnology",
"Packaging (microfabrication)",
"Electronic engineering",
"Condensed matter physics",
"nan",
"Chemical bonding"
] |
31,332,116 | https://en.wikipedia.org/wiki/Reentry%20Breakup%20Recorder | A Reentry Breakup Recorder (REBR) is a device that is designed to be placed aboard a spacecraft to record pertinent data when the spacecraft (intentionally) breaks up as it re-enters Earth's atmosphere.
The device records data regarding the thermal, acceleration, rotational and other stresses the vehicle is subject to... | Reentry Breakup Recorder | [
"Engineering"
] | 576 | [
"Atmospheric entry",
"Spacecraft communication",
"Aerospace engineering"
] |
31,336,125 | https://en.wikipedia.org/wiki/Plasma-activated%20bonding | Plasma-activated bonding is a derivative, directed to lower processing temperatures for direct bonding with hydrophilic surfaces. The main requirements for lowering temperatures of direct bonding are the use of materials melting at low temperatures and with different coefficients of thermal expansion (CTE).
Surface ac... | Plasma-activated bonding | [
"Materials_science",
"Engineering"
] | 1,455 | [
"Electronics manufacturing",
"Microtechnology",
"Packaging (microfabrication)",
"Electronic engineering",
"Semiconductor technology"
] |
31,336,130 | https://en.wikipedia.org/wiki/Glass%20frit%20bonding | Glass frit bonding, also referred to as glass soldering or seal glass bonding, describes a wafer bonding technique with an intermediate glass layer. It is a widely used encapsulation technology for surface micro-machined structures, e.g., accelerometers or gyroscopes. The technique utilizes low melting-point glass ("gl... | Glass frit bonding | [
"Materials_science",
"Engineering"
] | 3,102 | [
"Electronics manufacturing",
"Microtechnology",
"Packaging (microfabrication)",
"Electronic engineering",
"Semiconductor technology"
] |
886,766 | https://en.wikipedia.org/wiki/Bell%20test | A Bell test, also known as Bell inequality test or Bell experiment, is a real-world physics experiment designed to test the theory of quantum mechanics in relation to Albert Einstein's concept of local realism. Named for John Stewart Bell, the experiments test whether or not the real world satisfies local realism, whic... | Bell test | [
"Physics"
] | 5,757 | [
"Quantum measurement",
"Quantum mechanics"
] |
886,856 | https://en.wikipedia.org/wiki/Colloidal%20gold | Colloidal gold is a sol or colloidal suspension of nanoparticles of gold in a fluid, usually water. The colloid is coloured usually either wine red (for spherical particles less than 100 nm) or blue-purple (for larger spherical particles or nanorods).
Due to their optical, electronic, and molecular-recognition properti... | Colloidal gold | [
"Physics",
"Chemistry",
"Materials_science"
] | 7,135 | [
"Chemical mixtures",
"Condensed matter physics",
"Colloids"
] |
887,179 | https://en.wikipedia.org/wiki/Colpitts%20oscillator | A Colpitts oscillator, invented in 1918 by Canadian-American engineer Edwin H. Colpitts using vacuum tubes, is one of a number of designs for LC oscillators, electronic oscillators that use a combination of inductors (L) and capacitors (C) to produce an oscillation at a certain frequency. The distinguishing feature of... | Colpitts oscillator | [
"Mathematics",
"Engineering"
] | 2,140 | [
"Functions and mappings",
"Electronic design",
"Mathematical objects",
"Electronic engineering",
"Mathematical relations",
"Chaotic maps",
"Design",
"Dynamical systems"
] |
887,587 | https://en.wikipedia.org/wiki/Creatio%20ex%20materia | Creatio ex materia is the notion that the universe was formed out of eternal, pre-existing matter. This is in contrast to the notion of creatio ex nihilo, where the universe is created out of nothing. The idea of creatio ex materia is found in ancient near eastern cosmology, early Greek cosmology such as is in the work... | Creatio ex materia | [
"Physics",
"Astronomy"
] | 775 | [
"Philosophy of physics",
"Astronomical sub-disciplines",
"Applied and interdisciplinary physics",
"Theoretical physics",
"Astrophysics",
"Physical cosmology"
] |
888,140 | https://en.wikipedia.org/wiki/Stock%20and%20flow | Economics, business, accounting, and related fields often distinguish between quantities that are stocks and those that are flows. These differ in their units of measurement. A stock is measured at one specific time, and represents a quantity existing at that point in time (say, December 31, 2004), which may have accum... | Stock and flow | [
"Physics",
"Technology"
] | 1,740 | [
"Physical quantities",
"Time",
"Accounting systems",
"Information systems",
"Economics and time",
"Spacetime"
] |
889,183 | https://en.wikipedia.org/wiki/Inclinometer | An inclinometer or clinometer is an instrument used for measuring angles of slope, elevation, or depression of an object with respect to gravity's direction. It is also known as a tilt indicator, tilt sensor, tilt meter, slope alert, slope gauge, gradient meter, gradiometer, level gauge, level meter, declinometer, and... | Inclinometer | [
"Physics",
"Mathematics"
] | 2,578 | [
"Quantity",
"Dimensional instruments",
"Physical quantities",
"Size"
] |
889,722 | https://en.wikipedia.org/wiki/Coronagraph | A coronagraph is a telescopic attachment designed to block out the direct light from a star or other bright object so that nearby objects – which otherwise would be hidden in the object's bright glare – can be resolved. Most coronagraphs are intended to view the corona of the Sun, but a new class of conceptually simila... | Coronagraph | [
"Materials_science",
"Technology",
"Engineering"
] | 1,993 | [
"Glass engineering and science",
"Optical telescope components",
"Optical devices",
"Components"
] |
889,856 | https://en.wikipedia.org/wiki/Superheated%20steam | Superheated steam is steam at a temperature higher than its vaporization point at the absolute pressure where the temperature is measured.
Superheated steam can therefore cool (lose internal energy) by some amount, resulting in a lowering of its temperature without changing state (i.e., condensing) from a gas to a mix... | Superheated steam | [
"Physics",
"Environmental_science"
] | 1,529 | [
"Hydrology",
"Physical quantities",
"Steam power",
"Power (physics)",
"Water"
] |
20,159,695 | https://en.wikipedia.org/wiki/SIC-POVM | In the context of quantum mechanics and quantum information theory, symmetric, informationally complete, positive operator-valued measures (SIC-POVMs) are a particular type of generalized measurement (POVM). SIC-POVMs are particularly notable thanks to their defining features of (1) being informationally complete; (2) ... | SIC-POVM | [
"Physics",
"Mathematics"
] | 1,632 | [
"Unsolved problems in mathematics",
"Computer-assisted proofs",
"Euclidean plane geometry",
"Unsolved problems in physics",
"Quantum mechanics",
"Combinatorics",
"Fields of abstract algebra",
"Quantum measurement",
"Algebraic geometry",
"Hilbert spaces",
"Planes (geometry)",
"Mathematical prob... |
20,163,518 | https://en.wikipedia.org/wiki/Process%20flowsheeting | Process flowsheeting is the use of computer aids to perform steady-state heat and mass balancing, sizing and costing calculations for a chemical process. It is an essential and core component of process design.
The process design effort may be split into three basic steps
Synthesis
Analysis and
Optimization.
Synth... | Process flowsheeting | [
"Chemistry",
"Engineering"
] | 469 | [
"Chemical process engineering",
"Chemical engineering",
"Mechanical engineering by discipline",
"Process engineering"
] |
1,996,536 | https://en.wikipedia.org/wiki/Grain%20boundary | In materials science, a grain boundary is the interface between two grains, or crystallites, in a polycrystalline material. Grain boundaries are two-dimensional defects in the crystal structure, and tend to decrease the electrical and thermal conductivity of the material. Most grain boundaries are preferred sites for t... | Grain boundary | [
"Physics",
"Chemistry",
"Materials_science",
"Engineering"
] | 3,391 | [
"Applied and interdisciplinary physics",
"Crystallographic defects",
"Metallurgy",
"Materials science",
"Crystallography",
"Condensed matter physics",
"nan",
"Materials degradation"
] |
1,996,857 | https://en.wikipedia.org/wiki/Nucleation | In thermodynamics, nucleation is the first step in the formation of either a new thermodynamic phase or structure via self-assembly or self-organization within a substance or mixture. Nucleation is typically defined to be the process that determines how long an observer has to wait before the new phase or self-organize... | Nucleation | [
"Physics",
"Materials_science",
"Engineering"
] | 3,268 | [
"Applied and interdisciplinary physics",
"Materials science",
"nan"
] |
1,997,096 | https://en.wikipedia.org/wiki/Lindlar%20catalyst | A Lindlar catalyst is a heterogeneous catalyst consisting of palladium deposited on calcium carbonate or barium sulfate then poisoned with various forms of lead or sulfur. It is used for the hydrogenation of alkynes to alkenes (i.e. without further reduction into alkanes). It is named after its inventor Herbert Lindlar... | Lindlar catalyst | [
"Chemistry"
] | 438 | [
"Catalysis",
"Catalysts",
"Hydrogenation catalysts",
"Hydrogenation",
"Chemical kinetics"
] |
1,997,957 | https://en.wikipedia.org/wiki/Crazing | Crazing is a yielding mechanism in polymers characterized by the formation of a fine network of microvoids and fibrils. These structures (known as crazes) typically appear as linear features and frequently precede brittle fracture. The fundamental difference between crazes and cracks is that crazes contain polymer fibr... | Crazing | [
"Chemistry",
"Materials_science",
"Engineering"
] | 3,246 | [
"Structural engineering",
"Fracture mechanics",
"Deformation (mechanics)",
"Materials science",
"Plasticity (physics)",
"Polymer chemistry",
"Polymers",
"Materials degradation"
] |
1,999,035 | https://en.wikipedia.org/wiki/Damper%20%28flow%29 | A damper is a valve or plate that stops or regulates the flow of air inside a duct, chimney, VAV box, air handler, or other air-handling equipment. A damper may be used to cut off central air conditioning (heating or cooling) to an unused room, or to regulate it for room-by-room temperature and climate control - for ex... | Damper (flow) | [
"Physics",
"Engineering"
] | 1,727 | [
"Applied and interdisciplinary physics",
"Mechanical engineering"
] |
1,999,139 | https://en.wikipedia.org/wiki/Turbomachinery | Turbomachinery, in mechanical engineering, describes machines that transfer energy between a rotor and a fluid, including both turbines and compressors. While a turbine transfers energy from a fluid to a rotor, a compressor transfers energy from a rotor to a fluid. It is an important application of fluid mechanics.
Th... | Turbomachinery | [
"Physics",
"Chemistry",
"Engineering"
] | 3,012 | [
"Chemical equipment",
"Turbomachinery",
"Applied and interdisciplinary physics",
"Mechanical engineering"
] |
1,999,679 | https://en.wikipedia.org/wiki/Index%20of%20meteorology%20articles | This is a list of meteorology topics. The terms relate to meteorology, the interdisciplinary scientific study of the atmosphere that focuses on weather processes and forecasting. (see also: List of meteorological phenomena)
A
advection
aeroacoustics
aerobiology
aerography (meteorology)
aerology
air parcel (in m... | Index of meteorology articles | [
"Physics"
] | 4,629 | [
"Meteorology",
"Applied and interdisciplinary physics"
] |
32,822,023 | https://en.wikipedia.org/wiki/Headworks | Headworks is a civil engineering term for any structure at the head or diversion point of a waterway. It is smaller than a barrage and is used to divert water from a river into a canal or from a large canal into a smaller canal.
An example is the Horseshoe Falls at the start of the Llangollen Canal.
Historically the ... | Headworks | [
"Engineering"
] | 119 | [
"Construction",
"Civil engineering",
"Civil engineering stubs"
] |
32,822,562 | https://en.wikipedia.org/wiki/Fukushima%20nuclear%20accident%20cleanup | The Fukushima disaster cleanup is an ongoing attempt to limit radioactive contamination from the three nuclear reactors involved in the Fukushima Daiichi nuclear disaster that followed the earthquake and tsunami on 11 March 2011. The affected reactors were adjacent to one another and accident management was made much m... | Fukushima nuclear accident cleanup | [
"Chemistry",
"Technology",
"Engineering"
] | 8,615 | [
"Radioactively contaminated areas",
"Radioactive contamination",
"Ecological restoration",
"Soil contamination",
"Environmental engineering"
] |
32,823,089 | https://en.wikipedia.org/wiki/Surround%20optical-fiber%20immunoassay | Surround optical-fiber immunoassay (SOFIA) is an ultrasensitive, in vitro diagnostic platform incorporating a surround optical-fiber assembly that captures fluorescence emissions from an entire sample. The technology's defining characteristics are its extremely high limit of detection, sensitivity, and dynamic range. S... | Surround optical-fiber immunoassay | [
"Chemistry",
"Biology"
] | 3,800 | [
"Biochemistry methods",
"Protein methods",
"Protein biochemistry",
"Immunologic tests",
"Molecular biology techniques",
"nan",
"Molecular biology",
"Biochemistry"
] |
24,218,245 | https://en.wikipedia.org/wiki/C20H23N7O7 | The molecular formula C20H23N7O7 (molar mass: 473.44 g/mol, exact mass: 473.1659 u) may refer to:
Folinic acid
10-Formyltetrahydrofolate (10-CHO-THF)
Molecular formulas | C20H23N7O7 | [
"Physics",
"Chemistry"
] | 64 | [
"Molecules",
"Set index articles on molecular formulas",
"Isomerism",
"Molecular formulas",
"Matter"
] |
24,219,329 | https://en.wikipedia.org/wiki/Neurogenomics | Neurogenomics is the study of how the genome of an organism influences the development and function of its nervous system. This field intends to unite functional genomics and neurobiology in order to understand the nervous system as a whole from a genomic perspective.
The nervous system in vertebrates is made up of tw... | Neurogenomics | [
"Biology"
] | 7,792 | [
"Bioinformatics",
"Genetics",
"Neuroinformatics"
] |
24,220,458 | https://en.wikipedia.org/wiki/Super%20Tonks%E2%80%93Girardeau%20gas | In physics, the super Tonks–Girardeau gas represents an excited quantum gas phase with strong attractive interactions in a one-dimensional spatial geometry.
Usually, strongly attractive quantum gases are expected to form dense particle clusters and lose all gas-like properties. But in 2005, it was proposed by Stefano ... | Super Tonks–Girardeau gas | [
"Physics",
"Chemistry",
"Materials_science",
"Engineering"
] | 378 | [
"Phases of matter",
"Materials science",
"Condensed matter physics",
" molecular",
"Atomic",
"Matter",
" and optical physics"
] |
24,224,042 | https://en.wikipedia.org/wiki/Dialdehyde%20starch | Dialdehyde starch is a polysaccharide derived by chemical modification from starch. It is prepared by periodate oxidation of starch.
It has found use in the paper industry, where in it has been shown to improve the wet strength of consumer products like toilet paper and paper towels.
References
Starch
Organic polym... | Dialdehyde starch | [
"Chemistry"
] | 68 | [
"Organic compounds",
"Polymer stubs",
"Organic polymers",
"Organic chemistry stubs"
] |
24,224,338 | https://en.wikipedia.org/wiki/Expocode | EXPOCODE, or the "expedition code", is a unique alphanumeric identifier defined by the National Oceanographic Data Center (NODC) of the US. The code defines a standard nomenclature for cruise labels of research vessels and intends to avoid confusion in oceanographic data management.
The code was used by international ... | Expocode | [
"Physics",
"Environmental_science"
] | 256 | [
"Oceanography",
"Hydrology",
"Applied and interdisciplinary physics"
] |
27,478,537 | https://en.wikipedia.org/wiki/Leggett%20inequality | In physics, the Leggett inequalities, named for Anthony James Leggett, who derived them, are a related pair of mathematical expressions concerning the correlations of properties of entangled particles. (As published by Leggett, the inequalities were exemplified in terms of relative angles of elliptical and linear polar... | Leggett inequality | [
"Physics",
"Mathematics"
] | 315 | [
"Mathematical theorems",
"Equations of physics",
"Mathematical objects",
"Quantum mechanics",
"Binary relations",
"Equations",
"Quantum measurement",
"Mathematical relations",
"Inequalities (mathematics)",
"Mathematical problems",
"Physics theorems"
] |
27,481,335 | https://en.wikipedia.org/wiki/Plasmaron | In physics, the plasmaron was proposed by Lundqvist in 1967 as a quasiparticle arising in a system that has strong plasmon-electron interactions. In the original work, the plasmaron was proposed to describe a secondary peak (or satellite) in the photoemission spectral function of the electron gas. More precisely it was... | Plasmaron | [
"Physics",
"Chemistry",
"Materials_science"
] | 353 | [
"Plasmonics",
"Matter",
"Surface science",
"Nanotechnology",
"Condensed matter physics",
"Quasiparticles",
"Solid state engineering",
"Subatomic particles"
] |
28,770,638 | https://en.wikipedia.org/wiki/Irrigation%20informatics | Irrigation informatics is a newly emerging academic field that is a cross-disciplinary science using informatics to study the information flows and data management related to irrigation. The field is one of many new informatics sub-specialities that uses the science of information, the practice of information processin... | Irrigation informatics | [
"Mathematics"
] | 482 | [
"Computational science",
"Applied mathematics"
] |
28,777,533 | https://en.wikipedia.org/wiki/DNA%20and%20RNA%20codon%20tables | A codon table can be used to translate a genetic code into a sequence of amino acids. The standard genetic code is traditionally represented as an RNA codon table, because when proteins are made in a cell by ribosomes, it is messenger RNA (mRNA) that directs protein synthesis. The mRNA sequence is determined by the seq... | DNA and RNA codon tables | [
"Chemistry",
"Engineering",
"Biology"
] | 799 | [
"Protein biosynthesis",
"Biological engineering",
"Gene expression",
"Bioinformatics",
"Molecular genetics",
"Biosynthesis",
"Cellular processes",
"Molecular biology",
"Biochemistry"
] |
28,779,877 | https://en.wikipedia.org/wiki/Atmospheric%20optics | Atmospheric optics is "the study of the optical characteristics of the atmosphere or products of atmospheric processes .... [including] temporal and spatial resolutions beyond those discernible with the naked eye". Meteorological optics is "that part of atmospheric optics concerned with the study of patterns observable... | Atmospheric optics | [
"Physics",
"Chemistry"
] | 4,929 | [
"Physical phenomena",
"Earth phenomena",
"Applied and interdisciplinary physics",
"Optics",
" absorption and radiative transfer (optics)",
"Optical phenomena",
"Scattering",
" molecular",
"Atomic",
"Atmospheric optical phenomena",
" and optical physics"
] |
28,783,032 | https://en.wikipedia.org/wiki/Critical%20Path%20Institute | Critical Path Institute (C-Path) is a non-profit organization created to improve the drug development process; its consortia include more than 1,600 scientists from government regulatory and research agencies, academia, patient organizations, and bio-pharmaceutical companies.
Background
The U.S. Food and Drug Administ... | Critical Path Institute | [
"Chemistry",
"Biology"
] | 893 | [
"Pharmacology",
"Life sciences industry",
"Drug discovery",
"Pharmaceutical industry",
"Medicinal chemistry"
] |
34,321,107 | https://en.wikipedia.org/wiki/Unevenly%20spaced%20time%20series | In statistics, signal processing, and econometrics, an unevenly (or unequally or irregularly) spaced time series is a sequence of observation time and value pairs (tn, Xn) in which the spacing of observation times is not constant.
Unevenly spaced time series naturally occur in many industrial and scientific domains: ... | Unevenly spaced time series | [
"Engineering"
] | 488 | [
"Statistical signal processing",
"Engineering statistics"
] |
34,324,580 | https://en.wikipedia.org/wiki/Regional%20Centre%20for%20Biotechnology | The Regional Centre for Biotechnology (RCB) is an autonomous institution of education, training and research established under the auspices of United Nations Educational, Scientific and Cultural Organization (UNESCO) and Department of Biotechnology (DBT, India). The Parliament has passed the Regional Centre for Biote... | Regional Centre for Biotechnology | [
"Biology"
] | 1,229 | [
"Biotechnology in India",
"Biotechnology by country"
] |
34,327,576 | https://en.wikipedia.org/wiki/Low-rank%20approximation | In mathematics, low-rank approximation refers to the process of approximating a given matrix by a matrix of lower rank. More precisely, it is a minimization problem, in which the cost function measures the fit between a given matrix (the data) and an approximating matrix (the optimization variable), subject to a constr... | Low-rank approximation | [
"Mathematics"
] | 2,370 | [
"Mathematical optimization",
"Mathematical analysis"
] |
34,328,568 | https://en.wikipedia.org/wiki/SAMtools | SAMtools is a set of utilities for interacting with and post-processing short DNA sequence read alignments in the SAM (Sequence Alignment/Map), BAM (Binary Alignment/Map) and CRAM formats, written by Heng Li. These files are generated as output by short read aligners like BWA. Both simple and advanced tools are provide... | SAMtools | [
"Chemistry",
"Biology"
] | 1,760 | [
"Bioinformatics algorithms",
"Bioinformatics software",
"Bioinformatics",
"Molecular biology techniques",
"DNA sequencing"
] |
34,329,151 | https://en.wikipedia.org/wiki/Fundamental%20ephemeris | A fundamental ephemeris of the Solar System is a model of the objects of the system in space, with all of their positions and motions accurately represented. It is intended to be a high-precision primary reference for prediction and observation of those positions and motions, and which provides a basis for further refi... | Fundamental ephemeris | [
"Physics",
"Astronomy",
"Mathematics"
] | 1,394 | [
"Dynamics of the Solar System",
"Classical mechanics",
"Astrophysics",
"Mechanics",
"Celestial mechanics",
"Solar System",
"Dynamical systems"
] |
3,736,715 | https://en.wikipedia.org/wiki/Apoptosome | The apoptosome is a large quaternary protein structure formed in the process of apoptosis. Its formation is triggered by the release of cytochrome c from the mitochondria in response to an internal (intrinsic) or external (extrinsic) cell death stimulus. Stimuli can vary from DNA damage and viral infection to developme... | Apoptosome | [
"Chemistry",
"Biology"
] | 4,649 | [
"Senescence",
"Programmed cell death",
"Apoptosis",
"Signal transduction"
] |
3,738,637 | https://en.wikipedia.org/wiki/Failure%20mode%2C%20effects%2C%20and%20criticality%20analysis | Failure mode effects and criticality analysis (FMECA) is an extension of failure mode and effects analysis (FMEA).
FMEA is a bottom-up, inductive analytical method which may be performed at either the functional or piece-part level. FMECA extends FMEA by including a criticality analysis, which is used to chart the pro... | Failure mode, effects, and criticality analysis | [
"Engineering"
] | 2,358 | [
"Systems engineering",
"Reliability engineering",
"Safety engineering",
"Maintenance",
"Mechanical engineering"
] |
3,738,711 | https://en.wikipedia.org/wiki/Anders%20Hallberg | Anders Hallberg (born 29 April 1945 in Vetlanda, Jönköping County (Småland)) is a Swedish pharmaceutical researcher, professor in medicinal chemistry and 2006–2011 Rector Magnificus and Vice Chancellor at Uppsala University.
Biography
Hallberg completed his basic education at Lund University, where he obtained a Maste... | Anders Hallberg | [
"Chemistry"
] | 1,817 | [
"Computational chemistry",
"Theoretical chemists",
"Computational chemists"
] |
3,739,358 | https://en.wikipedia.org/wiki/RX-250-LPN | The RX-250-LPN is an Indonesian sounding rocket, part of the RX rocket family. It was launched six times between 1987 and 2007.
Technical data
Specifications come from the rocket's summary datasheet published by Indonesian space agency LAPAN.
Apogee: 70 kilometres
Liftoff thrust: 53 kilonewtons
Burning time: 6 second... | RX-250-LPN | [
"Astronomy"
] | 116 | [
"Rocketry stubs",
"Astronomy stubs"
] |
3,739,769 | https://en.wikipedia.org/wiki/Janka%20hardness%20test | The Janka hardness test (; ), created by Austrian-born American researcher Gabriel Janka (1864–1932), measures the resistance of a sample of wood to denting and wear. It measures the force required to embed an steel ball halfway into a sample of wood. (The diameter was chosen to produce a circle with an area of 100 sq... | Janka hardness test | [
"Materials_science"
] | 573 | [
"Hardness tests",
"Materials testing"
] |
3,740,178 | https://en.wikipedia.org/wiki/Euler%20number%20%28physics%29 | The Euler number (Eu) is a dimensionless number used in fluid flow calculations. It expresses the relationship between a local pressure drop caused by a restriction and the kinetic energy per volume of the flow, and is used to characterize energy losses in the flow, where a perfect frictionless flow corresponds to an E... | Euler number (physics) | [
"Chemistry",
"Engineering"
] | 199 | [
"Piping",
"Chemical engineering",
"Fluid dynamics"
] |
3,740,698 | https://en.wikipedia.org/wiki/Direct%20numerical%20simulation | A direct numerical simulation (DNS) is a simulation in computational fluid dynamics (CFD) in which the Navier–Stokes equations are numerically solved without any turbulence model. This means that the whole range of spatial and temporal scales of the turbulence must be resolved. All the spatial scales of the turbulence ... | Direct numerical simulation | [
"Chemistry",
"Engineering"
] | 691 | [
"Piping",
"Chemical engineering",
"Turbulence",
"Fluid dynamics"
] |
3,741,212 | https://en.wikipedia.org/wiki/Close-ratio%20transmission | A close-ratio transmission describes a motor vehicle transmission with a smaller than average difference between the gear ratios. They are most often used on sports cars in order to keep the engine in the power band.
Overview
A close-ratio transmission is one which is described relative to another transmission for the... | Close-ratio transmission | [
"Mathematics",
"Engineering"
] | 2,155 | [
"Quantity",
"Metrics",
"Engineering ratios"
] |
3,741,389 | https://en.wikipedia.org/wiki/Hylotheism | Hylotheism (from Gk. hyle, 'matter' and theos, 'God') is the belief that matter and God are the same, so in other words, defining God as matter.
The American Lutheran Church–Missouri Synod defines hylotheism is "Theory equating matter with God or merging one into the other" which it states as "Synonym for pantheism* a... | Hylotheism | [
"Physics"
] | 112 | [
"Matter"
] |
6,674,542 | https://en.wikipedia.org/wiki/Kolmogorov%20extension%20theorem | In mathematics, the Kolmogorov extension theorem (also known as Kolmogorov existence theorem, the Kolmogorov consistency theorem or the Daniell-Kolmogorov theorem) is a theorem that guarantees that a suitably "consistent" collection of finite-dimensional distributions will define a stochastic process. It is credited to... | Kolmogorov extension theorem | [
"Mathematics"
] | 1,202 | [
"Theorems about stochastic processes",
"Theorems in probability theory"
] |
6,682,293 | https://en.wikipedia.org/wiki/Salt%20Waste%20Processing%20Facility | The Salt Waste Processing Facility (SWPF) is a nuclear waste treatment facility for the United States Department of Energy's Nuclear Reservation Savannah River Site in Aiken, South Carolina. It was designed, constructed and commissioned by the Parsons Corporation for treatment of nuclear salt waste and became operati... | Salt Waste Processing Facility | [
"Chemistry",
"Technology"
] | 1,102 | [
"Radioactive waste",
"Environmental impact of nuclear power",
"Radioactivity",
"Hazardous waste"
] |
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