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 |
|---|---|---|---|---|---|---|
1,316,648 | https://en.wikipedia.org/wiki/Constructive%20dilemma | Constructive dilemma is a valid rule of inference of propositional logic. It is the inference that, if P implies Q and R implies S and either P or R is true, then either Q or S has to be true. In sum, if two conditionals are true and at least one of their antecedents is, then at least one of their consequents must be t... | Constructive dilemma | [
"Mathematics"
] | 319 | [
"Theorems in propositional logic",
"Rules of inference",
"Theorems in the foundations of mathematics",
"Proof theory"
] |
1,317,423 | https://en.wikipedia.org/wiki/Voith%20Schneider%20Propeller | The Voith Schneider Propeller (VSP) is a specialized marine propulsion system (MPS) manufactured by the Voith Group based on a cyclorotor design. It is highly maneuverable, being able to change the direction of its thrust almost instantaneously. It is widely used on tugs and ferries.
Operation
From a circular plate, r... | Voith Schneider Propeller | [
"Engineering"
] | 1,165 | [
"Marine propulsion",
"Marine engineering"
] |
1,317,567 | https://en.wikipedia.org/wiki/Vinyl%20alcohol | Vinyl alcohol, also called ethenol (IUPAC name; not ethanol) or ethylenol, is the simplest enol. With the formula , it is a labile compound that converts to acetaldehyde immediately upon isolation near room temperature. It is not a practical precursor to any compound.
Synthesis
Vinyl alcohol can be formed by the pyrol... | Vinyl alcohol | [
"Chemistry"
] | 788 | [
"Enols",
"Organic compounds",
"Functional groups",
"Organic compounds with 2 carbon atoms"
] |
24,053,892 | https://en.wikipedia.org/wiki/C14H16N2 | {{DISPLAYTITLE:C14H16N2}}
The molecular formula C14H16N2 (molar mass: 212.29 g/mol) may refer to:
Atipamezole
Diphenylethylenediamine
Ergoline
Naphthylpiperazine
RS134-49
Tolidine
Molecular formulas | C14H16N2 | [
"Physics",
"Chemistry"
] | 73 | [
"Molecules",
"Set index articles on molecular formulas",
"Isomerism",
"Molecular formulas",
"Matter"
] |
24,053,915 | https://en.wikipedia.org/wiki/C20H26N4O | {{DISPLAYTITLE:C20H26N4O}}
The molecular formula C20H26N4O (molar mass: 338.45 g/mol, exact mass: 338.2107 u) may refer to:
Lisuride
Molecular formulas | C20H26N4O | [
"Physics",
"Chemistry"
] | 58 | [
"Molecules",
"Set index articles on molecular formulas",
"Isomerism",
"Molecular formulas",
"Matter"
] |
24,053,935 | https://en.wikipedia.org/wiki/C19H23N3O2 | {{DISPLAYTITLE:C19H23N3O2}}
The molecular formula C19H23N3O2 (molar mass : 325.41 g/mol) may refer to:
ABT-670, a potent, orally bioavailable dopamine agonist
Ergometrine, a primary ergot and morning glory alkaloid
Ergometrinine, an ergot alkaloid
Molecular formulas | C19H23N3O2 | [
"Physics",
"Chemistry"
] | 96 | [
"Molecules",
"Set index articles on molecular formulas",
"Isomerism",
"Molecular formulas",
"Matter"
] |
24,053,946 | https://en.wikipedia.org/wiki/Damped%20Lyman-alpha%20system | Damped Lyman alpha systems or Damped Lyman alpha absorption systems is a term used by astronomers for concentrations of neutral hydrogen gas that are detected in the spectra of quasars – a class of distant Active Galactic Nuclei. They are defined to be systems where the column density (density projected along the line ... | Damped Lyman-alpha system | [
"Physics",
"Chemistry",
"Astronomy"
] | 236 | [
"Astronomical sub-disciplines",
"Spectrum (physical sciences)",
"Outer space",
"Theoretical physics",
"Intergalactic media",
"Astrophysics",
"Astronomical spectroscopy",
"Spectroscopy",
"Physical cosmology"
] |
24,058,550 | https://en.wikipedia.org/wiki/Amide%20reduction | Amide reduction is a reaction in organic synthesis where an amide is reduced to either an amine or an aldehyde functional group.
Catalytic hydrogenation
Catalytic hydrogenation can be used to reduce amides to amines; however, the process often requires high hydrogenation pressures and reaction temperatures to be effec... | Amide reduction | [
"Chemistry"
] | 364 | [
"Organic redox reactions",
"Organic reactions"
] |
24,059,053 | https://en.wikipedia.org/wiki/Agaricus%20benesii | Agaricus benesii is an agaric mushroom of the genus Agaricus known in English as the mull mushroom. This mushroom can be distinguished by a white cap that bruises pinkish-red when injured, a scaly lower stipe, and a conifer habitat. Similar to Agaricus californicus and A. xanthodermus, the cap discolors brown in age. ... | Agaricus benesii | [
"Biology"
] | 514 | [
"Fungi",
"Fungus species"
] |
854,272 | https://en.wikipedia.org/wiki/Creatine%20kinase | Creatine kinase (CK), also known as creatine phosphokinase (CPK) or phosphocreatine kinase, is an enzyme () expressed by various tissues and cell types. CK catalyses the conversion of creatine and uses adenosine triphosphate (ATP) to create phosphocreatine (PCr) and adenosine diphosphate (ADP). This CK enzyme reaction ... | Creatine kinase | [
"Chemistry",
"Biology"
] | 1,535 | [
"Biochemistry",
"Chemical pathology"
] |
854,294 | https://en.wikipedia.org/wiki/DNA%20repair | DNA repair is a collection of processes by which a cell identifies and corrects damage to the DNA molecules that encode its genome. In human cells, both normal metabolic activities and environmental factors such as radiation can cause DNA damage, resulting in tens of thousands of individual molecular lesions per cell p... | DNA repair | [
"Chemistry",
"Biology"
] | 13,604 | [
"DNA repair",
"Senescence",
"Molecular genetics",
"Cellular processes",
"Molecular biology",
"Metabolism"
] |
855,138 | https://en.wikipedia.org/wiki/Line%20element | In geometry, the line element or length element can be informally thought of as a line segment associated with an infinitesimal displacement vector in a metric space. The length of the line element, which may be thought of as a differential arc length, is a function of the metric tensor and is denoted by .
Line elemen... | Line element | [
"Physics"
] | 973 | [
"Special relativity",
"General relativity",
"Theory of relativity"
] |
855,150 | https://en.wikipedia.org/wiki/Infinite%20divisibility | Infinite divisibility arises in different ways in philosophy, physics, economics, order theory (a branch of mathematics), and probability theory (also a branch of mathematics). One may speak of infinite divisibility, or the lack thereof, of matter, space, time, money, or abstract mathematical objects such as the contin... | Infinite divisibility | [
"Physics",
"Mathematics"
] | 2,109 | [
"Theoretical physics",
"Quantum mechanics",
"Order theory"
] |
855,571 | https://en.wikipedia.org/wiki/Nagios | Nagios is an event monitoring system that offers monitoring and alerting services for servers, switches, applications and services. It alerts users when things go wrong and alerts them a second time when the problem has been resolved.
Ethan Galstad and a group of developers originally wrote Nagios as NetSaint. , the... | Nagios | [
"Technology"
] | 1,133 | [
"Information systems",
"System administration"
] |
856,005 | https://en.wikipedia.org/wiki/Rotation%20matrix | In linear algebra, a rotation matrix is a transformation matrix that is used to perform a rotation in Euclidean space. For example, using the convention below, the matrix
rotates points in the plane counterclockwise through an angle about the origin of a two-dimensional Cartesian coordinate system. To perform the ro... | Rotation matrix | [
"Physics",
"Mathematics"
] | 9,188 | [
"Transformation (function)",
"Applied mathematics",
"Theoretical physics",
"Mathematical objects",
"Matrices (mathematics)",
"Geometry",
"Mathematical physics"
] |
2,684,988 | https://en.wikipedia.org/wiki/Fluid%20mechanics | Fluid mechanics is the branch of physics concerned with the mechanics of fluids (liquids, gases, and plasmas) and the forces on them.
It has applications in a wide range of disciplines, including mechanical, aerospace, civil, chemical, and biomedical engineering, as well as geophysics, oceanography, meteorology, astrop... | Fluid mechanics | [
"Engineering"
] | 2,624 | [
"Construction",
"Civil engineering",
"Fluid mechanics"
] |
2,685,460 | https://en.wikipedia.org/wiki/Level-spacing%20distribution | In mathematical physics, level spacing is the difference between consecutive elements in some set of real numbers. In particular, it is the difference between consecutive energy levels or eigenvalues of a matrix or linear operator.
Mathematical physics | Level-spacing distribution | [
"Physics",
"Mathematics"
] | 47 | [
"Applied mathematics",
"Theoretical physics",
"Mathematical physics"
] |
2,685,562 | https://en.wikipedia.org/wiki/Fredholm%20determinant | In mathematics, the Fredholm determinant is a complex-valued function which generalizes the determinant of a finite dimensional linear operator. It is defined for bounded operators on a Hilbert space which differ from the identity operator by a trace-class operator. The function is named after the mathematician Erik Iv... | Fredholm determinant | [
"Physics",
"Engineering"
] | 1,160 | [
"Hilbert spaces",
"Tensors",
"Quantum mechanics",
"Topological tensor products"
] |
2,685,968 | https://en.wikipedia.org/wiki/Attosecond%20physics | Attosecond physics, also known as attophysics, or more generally attosecond science, is a branch of physics that deals with light-matter interaction phenomena wherein attosecond (10−18 s) photon pulses are used to unravel dynamical processes in matter with unprecedented time resolution.
Attosecond science mainly emplo... | Attosecond physics | [
"Physics",
"Chemistry"
] | 3,424 | [
"Spectrum (physical sciences)",
"Theoretical physics",
"Quantum mechanics",
"Time-resolved spectroscopy",
" molecular",
"Atomic",
"Spectroscopy",
" and optical physics"
] |
2,686,262 | https://en.wikipedia.org/wiki/Piezophile | A piezophile (from Greek "piezo-" for pressure and "-phile" for loving) is an organism with optimal growth under high hydrostatic pressure, i.e., an organism that has its maximum rate of growth at a hydrostatic pressure equal to or above , when tested over all permissible temperatures. Originally, the term barophile wa... | Piezophile | [
"Biology"
] | 1,453 | [
"Prokaryotes",
"Ecosystems",
"Bacteria",
"Aquatic ecology",
"Microorganisms"
] |
2,686,401 | https://en.wikipedia.org/wiki/Aerospace%20physiology | Aerospace physiology is the study of the effects of high altitudes on the body, such as different pressures and levels of oxygen. At different altitudes the body may react in different ways, provoking more cardiac output, and producing more erythrocytes. These changes cause more energy waste in the body, causing muscle... | Aerospace physiology | [
"Physics",
"Biology"
] | 1,574 | [
"Spacetime",
"Space",
"Aerospace",
"Physiology"
] |
2,686,467 | https://en.wikipedia.org/wiki/Tryptone | Tryptone is the assortment of peptides formed by the digestion of casein by the protease trypsin.
Tryptone is commonly used in microbiology to produce lysogeny broth (LB) for the growth of E. coli and other microorganisms. It provides a source of amino acids for the growing bacteria. Tryptone is similar to casamino a... | Tryptone | [
"Chemistry"
] | 178 | [
"Biomolecules by chemical classification",
"Peptides",
"Molecular biology"
] |
2,686,574 | https://en.wikipedia.org/wiki/A%20Hole%20in%20Texas | A Hole In Texas is a novel by Herman Wouk. Published in 2004, the book describes the adventures of a high-energy physicist following the surprise announcement that a Chinese physicist (with whom he had a long-ago romance) had discovered the long-sought Higgs boson.
Parts of the plot are based on the aborted Supercondu... | A Hole in Texas | [
"Physics"
] | 258 | [
"Works about particle physics",
"Particle physics"
] |
2,687,105 | https://en.wikipedia.org/wiki/Lithium%20fluoride | Lithium fluoride is an inorganic compound with the chemical formula LiF. It is a colorless solid that transitions to white with decreasing crystal size.
Its structure is analogous to that of sodium chloride, but it is much less soluble in water. It is mainly used as a component of molten salts. Partly because Li and F... | Lithium fluoride | [
"Physics",
"Chemistry",
"Materials_science"
] | 714 | [
"Inorganic compounds",
"Salts",
"Materials",
"Optical materials",
"Crystallography",
"Crystals",
"Metal halides",
"Fluorides",
"Matter"
] |
2,687,346 | https://en.wikipedia.org/wiki/Interferon%20gamma | Interferon gamma (IFNG or IFN-γ) is a dimerized soluble cytokine that is the only member of the type II class of interferons. The existence of this interferon, which early in its history was known as immune interferon, was described by E. F. Wheelock as a product of human leukocytes stimulated with phytohemagglutinin, ... | Interferon gamma | [
"Chemistry",
"Biology"
] | 5,000 | [
"Cytokines",
"Antiviral drugs",
"Biocides",
"Signal transduction"
] |
2,687,374 | https://en.wikipedia.org/wiki/SHEEP%20%28symbolic%20computation%20system%29 | SHEEP is one of the earliest interactive symbolic computation systems. It is specialized for computations with tensors, and was designed for the needs of researchers working with general relativity and other theories involving extensive tensor calculus computations.
SHEEP is a freeware package (copyrighted, but free ... | SHEEP (symbolic computation system) | [
"Physics",
"Engineering"
] | 251 | [
"Tensors",
"Relativity stubs",
"Theory of relativity"
] |
2,687,437 | https://en.wikipedia.org/wiki/GRTensorII | GRTensorII is a Maple package designed for tensor computations, particularly in general relativity.
This package was developed at Queen's University in Kingston, Ontario by Peter Musgrave, Denis Pollney and Kayll Lake. While there are many packages which perform tensor computations (including a standard Maple package... | GRTensorII | [
"Physics"
] | 262 | [
"General relativity",
"Theory of relativity"
] |
2,687,833 | https://en.wikipedia.org/wiki/Net%20positive%20suction%20head | In a hydraulic circuit, net positive suction head (NPSH) may refer to one of two quantities in the analysis of cavitation:
The Available NPSH (NPSHA): a measure of how close the fluid at a given point is to flashing, and so to cavitation. Technically it is the absolute pressure head minus the vapour pressure of the li... | Net positive suction head | [
"Physics",
"Chemistry",
"Engineering"
] | 1,860 | [
"Physical systems",
"Hydraulics",
"Civil engineering",
"Fluid mechanics",
"Fluid dynamics"
] |
2,690,240 | https://en.wikipedia.org/wiki/David%20G.%20Cory | David G. Cory is a Professor of Chemistry at the University of Waterloo where he holds the Canada Excellence Research Chair in Quantum Information Processing. He works at the Institute for Quantum Computing, and is also associated with the Waterloo Institute for Nanotechnology.
Education and career
Cory was educated ... | David G. Cory | [
"Physics",
"Chemistry"
] | 356 | [
"Physical chemists",
"Quantum physicists",
"Quantum mechanics"
] |
2,690,303 | https://en.wikipedia.org/wiki/Stanford%20Synchrotron%20Radiation%20Lightsource | The Stanford Synchrotron Radiation Lightsource (formerly Stanford Synchrotron Radiation Laboratory), a division of SLAC National Accelerator Laboratory, is operated by Stanford University for the Department of Energy. SSRL is a National User Facility which provides synchrotron radiation, a name given to electromagnetic... | Stanford Synchrotron Radiation Lightsource | [
"Materials_science"
] | 1,271 | [
"Materials testing",
"Synchrotron radiation facilities"
] |
2,690,773 | https://en.wikipedia.org/wiki/Starlink%20Project | The Starlink Project, referred to by users as Starlink and by developers as simply The Project, was a UK astronomical computing project which supplied general-purpose data reduction software. Until the late 1990s, it also supplied computing hardware and system administration personnel to UK astronomical institutes. In ... | Starlink Project | [
"Astronomy"
] | 1,954 | [
"Astronomy software",
"Works about astronomy",
"Astronomy organizations"
] |
2,690,851 | https://en.wikipedia.org/wiki/Norbornene | Norbornene or norbornylene or norcamphene is a highly strained bridged cyclic hydrocarbon. It is a white solid with a pungent sour odor. The molecule consists of a cyclohexene ring with a methylene bridge between carbons 1 and 4. The molecule carries a double bond which induces significant ring strain and significant r... | Norbornene | [
"Chemistry",
"Materials_science"
] | 493 | [
"Monomers",
"Polymer chemistry"
] |
2,691,067 | https://en.wikipedia.org/wiki/Injection%20pump | An injection pump is the device that pumps fuel into the cylinders of a diesel engine. Traditionally, the injection pump was driven indirectly from the crankshaft by gears, chains or a toothed belt (often the timing belt) that also drives the camshaft. It rotates at half crankshaft speed in a conventional four-stroke d... | Injection pump | [
"Physics",
"Chemistry"
] | 860 | [
"Pumps",
"Hydraulics",
"Physical systems",
"Turbomachinery"
] |
504,902 | https://en.wikipedia.org/wiki/Electric%20field%20gradient | In atomic, molecular, and solid-state physics, the electric field gradient (EFG) measures the rate of change of the electric field at an atomic nucleus generated by the electronic charge distribution and the other nuclei. The EFG couples with the nuclear electric quadrupole moment of quadrupolar nuclei (those with spin... | Electric field gradient | [
"Physics",
"Chemistry",
"Materials_science",
"Engineering"
] | 625 | [
"Quantum chemistry",
"Quantum mechanics",
"Electric and magnetic fields in matter",
"Materials science",
"Theoretical chemistry",
"Condensed matter physics",
"Atomic physics",
" molecular",
"Atomic",
" and optical physics"
] |
505,425 | https://en.wikipedia.org/wiki/DNA%20polymerase%20I | DNA polymerase I (or Pol I) is an enzyme that participates in the process of prokaryotic DNA replication. Discovered by Arthur Kornberg in 1956, it was the first known DNA polymerase (and the first known of any kind of polymerase). It was initially characterized in E. coli and is ubiquitous in prokaryotes. In E. coli ... | DNA polymerase I | [
"Biology"
] | 2,108 | [
"DNA replication",
"Molecular genetics",
"Genetics techniques"
] |
505,457 | https://en.wikipedia.org/wiki/DnaA | DnaA is a protein that activates initiation of DNA replication in bacteria. Based on the Replicon Model, a positively active initiator molecule contacts with a particular spot on a circular chromosome called the replicator to start DNA replication. It is a replication initiation factor which promotes the unwinding of D... | DnaA | [
"Chemistry",
"Biology"
] | 3,737 | [
"Genetics techniques",
"Natural products",
"Organic compounds",
"DNA replication",
"Molecular genetics",
"Structural biology",
"Biomolecules",
"Biochemistry",
"Molecular biology"
] |
505,470 | https://en.wikipedia.org/wiki/Cooperativity | Cooperativity is a phenomenon displayed by systems involving identical or near-identical elements, which act dependently of each other, relative to a hypothetical standard non-interacting system in which the individual elements are acting independently. One manifestation of this is enzymes or receptors that have multip... | Cooperativity | [
"Physics",
"Chemistry",
"Materials_science",
"Biology"
] | 1,815 | [
"Natural products",
"Biochemistry",
"Enzyme kinetics",
"Signal transduction",
"Organic compounds",
"Receptors",
"Condensed matter physics",
"nan",
"Biomolecules",
"Structural biology",
"Chemical bonding",
"Chemical kinetics",
"Molecular biology"
] |
505,501 | https://en.wikipedia.org/wiki/DNA%20polymerase%20III%20holoenzyme | DNA polymerase III holoenzyme is the primary enzyme complex involved in prokaryotic DNA replication. It was discovered by Thomas Kornberg (son of Arthur Kornberg) and Malcolm Gefter in 1970. The complex has high processivity (i.e. the number of nucleotides added per binding event) and, specifically referring to the rep... | DNA polymerase III holoenzyme | [
"Biology"
] | 1,218 | [
"Genetics techniques",
"DNA replication",
"Molecular genetics"
] |
505,575 | https://en.wikipedia.org/wiki/Phosphodiester%20bond | In chemistry, a phosphodiester bond occurs when exactly two of the hydroxyl groups () in phosphoric acid react with hydroxyl groups on other molecules to form two ester bonds. The "bond" involves this linkage . Discussion of phosphodiesters is dominated by their prevalence in DNA and RNA, but phosphodiesters occur in ... | Phosphodiester bond | [
"Chemistry",
"Biology"
] | 787 | [
"Pharmacology",
"Properties of chemical elements",
"Biology and pharmacology of chemical elements",
"Molecular biology",
"Biochemistry"
] |
506,276 | https://en.wikipedia.org/wiki/Equivalent%20dose | Equivalent dose is a dose quantity H representing the stochastic health effects of low levels of ionizing radiation on the human body which represents the probability of radiation-induced cancer and genetic damage. It is derived from the physical quantity absorbed dose, but also takes into account the biological effe... | Equivalent dose | [
"Physics",
"Chemistry",
"Mathematics",
"Biology"
] | 1,698 | [
"Physical quantities",
"Quantity",
"Radiobiology",
"Radioactivity quantities",
"Radioactivity"
] |
506,330 | https://en.wikipedia.org/wiki/3SUM | In computational complexity theory, the 3SUM problem asks if a given set of real numbers contains three elements that sum to zero. A generalized version, k-SUM, asks the same question on k elements, rather than simply 3. 3SUM can be easily solved in time, and matching lower bounds are known in some specialized mode... | 3SUM | [
"Mathematics"
] | 2,097 | [
"Unsolved problems in mathematics",
"Unsolved problems in computer science",
"Computational mathematics",
"Computational problems",
"Polynomial-time problems",
"Computational geometry",
"Mathematical problems"
] |
506,383 | https://en.wikipedia.org/wiki/Cryptosystem | In cryptography, a cryptosystem is a suite of cryptographic algorithms needed to implement a particular security service, such as confidentiality (encryption).
Typically, a cryptosystem consists of three algorithms: one for key generation, one for encryption, and one for decryption. The term cipher (sometimes cypher) ... | Cryptosystem | [
"Mathematics",
"Engineering"
] | 420 | [
"Applied mathematics",
"Cryptography",
"Cybersecurity engineering"
] |
506,682 | https://en.wikipedia.org/wiki/Fluid%20power | Fluid power is the use of fluids under pressure to generate, control, and transmit power. Fluid power is conventionally subdivided into hydraulics (using a liquid such as mineral oil or water) and pneumatics (using a gas such as compressed air or other gases). Although steam is also a fluid, steam power is usually cl... | Fluid power | [
"Physics",
"Engineering"
] | 1,361 | [
"Applied and interdisciplinary physics",
"Physical quantities",
"Power (physics)",
"Fluid power",
"Mechanical engineering"
] |
507,305 | https://en.wikipedia.org/wiki/Cement%20chemist%20notation | Cement chemist notation (CCN) was developed to simplify the formulas cement chemists use on a daily basis. It is a shorthand way of writing the chemical formula of oxides of calcium, silicon, and various metals.
Abbreviations of oxides
The main oxides present in cement (or in glass and ceramics) are abbreviated in th... | Cement chemist notation | [
"Chemistry",
"Engineering"
] | 1,126 | [
"Chemical formulas",
"Concrete",
"Structural engineering",
"Chemical structures"
] |
507,330 | https://en.wikipedia.org/wiki/Immunostaining | In biochemistry, immunostaining is any use of an antibody-based method to detect a specific protein in a sample. The term "immunostaining" was originally used to refer to the immunohistochemical staining of tissue sections, as first described by Albert Coons in 1941. However, immunostaining now encompasses a broad rang... | Immunostaining | [
"Chemistry",
"Biology"
] | 1,607 | [
"Biochemistry methods",
"Protein methods",
"Protein biochemistry",
"Immunology",
"Flow cytometry"
] |
507,854 | https://en.wikipedia.org/wiki/Helium%20flash | A helium flash is a very brief thermal runaway nuclear fusion of large quantities of helium into carbon through the triple-alpha process in the core of low-mass stars (between 0.8 solar masses () and 2.0 ) during their red giant phase. The Sun is predicted to experience a flash 1.2 billion years after it leaves the mai... | Helium flash | [
"Physics",
"Chemistry"
] | 1,601 | [
"Nuclear fission",
"Concepts in astrophysics",
"Astrophysics",
"Stellar evolution",
"Nucleosynthesis",
"Exotic matter",
"Nuclear physics",
"Nuclear fusion",
"Matter"
] |
3,645,679 | https://en.wikipedia.org/wiki/Axial%20piston%20pump | An axial piston pump is a positive displacement pump that has a number of pistons in a circular array within a cylinder block.
It can be used as a stand-alone pump, a hydraulic motor or an automotive air conditioning compressor.
Description
An axial piston pump has a number of pistons (usually an odd number) arrange... | Axial piston pump | [
"Physics",
"Chemistry",
"Technology"
] | 2,071 | [
"Pumps",
"Engines",
"Turbomachinery",
"Physical systems",
"Engine technology",
"Hydraulics"
] |
3,646,203 | https://en.wikipedia.org/wiki/Expanding%20Earth | The expanding Earth or growing Earth was a hypothesis attempting to explain the position and relative movement of continents by increase in the volume of Earth. With the recognition of plate tectonics in 20th century, the idea has been abandoned.
Different forms of the hypothesis
Expansion with constant mass
In 1834,... | Expanding Earth | [
"Physics"
] | 1,740 | [
"Applied and interdisciplinary physics",
"Geophysics"
] |
3,647,951 | https://en.wikipedia.org/wiki/Laborat%C3%B3rio%20Nacional%20de%20Luz%20S%C3%ADncrotron | Laboratório Nacional de Luz Síncrotron (; LNLS) is the Brazilian Synchrotron Light Laboratory, a research institution on physics, chemistry, material science and life sciences. It is located in the city of Campinas, sub-district of Barão Geraldo, state of São Paulo, Brazil.
The Center, which is operated by the Brazili... | Laboratório Nacional de Luz Síncrotron | [
"Materials_science"
] | 339 | [
"Materials testing",
"Synchrotron radiation facilities"
] |
3,650,205 | https://en.wikipedia.org/wiki/Single-machine%20scheduling | Single-machine scheduling or single-resource scheduling or Dhinchak Pooja is an optimization problem in computer science and operations research. We are given n jobs J1, J2, ..., Jn of varying processing times, which need to be scheduled on a single machine, in a way that optimizes a certain objective, such as the thro... | Single-machine scheduling | [
"Mathematics",
"Engineering"
] | 2,041 | [
"Optimal scheduling",
"Industrial engineering",
"Computational problems",
"Mathematical problems",
"NP-complete problems"
] |
13,099,198 | https://en.wikipedia.org/wiki/Model-driven%20integration | In software design, model-driven integration is a subset of model-driven architecture (MDA) which focuses purely on solving Application Integration problems using executable Unified Modeling Language (UML).
External links
"Model-Driven Integration in Financial Services" case-study by Metada, 2008
Systems engineerin... | Model-driven integration | [
"Engineering"
] | 66 | [
"Systems engineering"
] |
13,100,537 | https://en.wikipedia.org/wiki/SHARE%20Operating%20System | The SHARE Operating System (SOS) is an operating system introduced in 1959 by the SHARE user group. It is an improvement on the General Motors GM-NAA I/O operating system, the first operating system for the IBM 704. The main objective was to improve the sharing of programs.
The SHARE Operating System provided new meth... | SHARE Operating System | [
"Technology"
] | 252 | [
"Operating system stubs",
"Computing stubs"
] |
13,103,839 | https://en.wikipedia.org/wiki/Magnetic%20water%20treatment | Magnetic water treatment (also known as anti-scale magnetic treatment or AMT) is a disproven method of reducing the effects of hard water by passing it through a magnetic field as a non-chemical alternative to water softening. A 1996 study by Lawrence Livermore National Laboratory found no significant effect of magneti... | Magnetic water treatment | [
"Chemistry",
"Materials_science",
"Engineering",
"Environmental_science"
] | 230 | [
"Water treatment",
"Water pollution",
"Environmental engineering",
"Water technology",
"Materials degradation",
"Fouling"
] |
13,105,832 | https://en.wikipedia.org/wiki/Chloride%20process | The chloride process is used to separate titanium from its ores. The goal of the process is to win high purity titanium dioxide from ores such as ilmenite (FeTiO3) and rutile (TiO2). The strategy exploits the volatility of TiCl4, which is readily purified and converted to the dioxide. Millions of tons of TiO2 are pro... | Chloride process | [
"Chemistry"
] | 558 | [
"Chemical process engineering",
"Chemical processes",
"nan"
] |
13,106,156 | https://en.wikipedia.org/wiki/List%20of%20HTTP%20header%20fields | HTTP header fields are a list of strings sent and received by both the client program and server on every HTTP request and response. These headers are usually invisible to the end-user and are only processed or logged by the server and client applications. They define how information sent/received through the connectio... | List of HTTP header fields | [
"Technology"
] | 1,446 | [
"Computing-related lists",
"Internet-related lists"
] |
26,937,802 | https://en.wikipedia.org/wiki/Progress%20in%20Electromagnetics%20Research | Progress in Electromagnetics Research is a peer-reviewed open access scientific journal covering all aspects of electromagnetic theory and applications. It was established in 1989 as Electromagnetic Waves. The editors-in-chief are Weng Cho Chew (Purdue University) and Sailing He (Royal Institute of Technology). Jin Au ... | Progress in Electromagnetics Research | [
"Engineering"
] | 205 | [
"Electrical engineering",
"Electronic engineering",
"Electrical and electronic engineering journals"
] |
26,939,239 | https://en.wikipedia.org/wiki/Piperoxan | Piperoxan, also known as benodaine, was the first antihistamine to be discovered. This compound, derived from benzodioxan, was prepared in the early 1930s by Daniel Bovet and Ernest Fourneau at the Pasteur Institute in France. Formerly investigated by Fourneau as an α-adrenergic-blocking agent, they demonstrated that i... | Piperoxan | [
"Chemistry"
] | 393 | [
"Pharmacology",
"Alpha blockers",
"Drug safety",
"Abandoned drugs"
] |
26,940,632 | https://en.wikipedia.org/wiki/APC/C%20activator%20protein%20CDH1 | Cdh1 (cdc20 homolog 1) is one of the substrate adaptor proteins of the anaphase-promoting complex (APC) in the budding yeast Saccharomyces cerevisiae. Functioning as an activator of the APC/C, Cdh1 regulates the activity and substrate specificity of this ubiquitin E3-ligase. The human homolog is encoded by the FZR1 gen... | APC/C activator protein CDH1 | [
"Chemistry",
"Biology"
] | 1,693 | [
"Biomolecules by chemical classification",
"Cellular processes",
"Molecular biology",
"Proteins",
"Cell cycle"
] |
26,941,794 | https://en.wikipedia.org/wiki/Superconducting%20electric%20machine | Superconducting electric machines are electromechanical systems that rely on the use of one or more superconducting elements. Since superconductors have no DC resistance, they typically have greater efficiency. The most important parameter that is of utmost interest in superconducting machine is the generation of a ver... | Superconducting electric machine | [
"Physics",
"Technology",
"Engineering"
] | 1,127 | [
"Electrical generators",
"Machines",
"Engines",
"Electric motors",
"Physical systems",
"Electrical engineering"
] |
26,941,845 | https://en.wikipedia.org/wiki/COLE%20Publishing | COLE Publishing is a privately held company with offices in Wisconsin and Minnesota. The company creates nine highly focused trade publications for the liquid waste and environmental wastewater industries. Its titles include Pumper, Cleaner, PRO (Portable Restroom Operator), Onsite Installer, Municipal Sewer & Water (M... | COLE Publishing | [
"Chemistry",
"Engineering",
"Environmental_science"
] | 346 | [
"Sewerage",
"Environmental engineering",
"Water pollution"
] |
26,942,963 | https://en.wikipedia.org/wiki/Welding%20joint | In metalworking, a welding joint is a point or edge where two or more pieces of metal or plastic are joined together. They are formed by welding two or more workpieces according to a particular geometry. There are five types of joints referred to by the American Welding Society: butt, corner, edge, lap, and tee. These... | Welding joint | [
"Engineering"
] | 1,801 | [
"Welding",
"Mechanical engineering"
] |
26,944,086 | https://en.wikipedia.org/wiki/Multi-channel%20length | Multi-channel length is a technique for reducing power leakage in both active and idle modes on CMOS (MOSFET) technology. Other techniques to reduce leakage, like power gating and SRAM retention, are targeted at reducing leakage power when the device, or portions of it, are not operating.
Short channel length devic... | Multi-channel length | [
"Engineering"
] | 475 | [
"Electrical engineering",
"Electronic engineering",
"Digital electronics",
"Power standards"
] |
294,218 | https://en.wikipedia.org/wiki/Molecular%20assembler | A molecular assembler, as defined by K. Eric Drexler, is a "proposed device able to guide chemical reactions by positioning reactive molecules with atomic precision". A molecular assembler is a kind of molecular machine. Some biological molecules such as ribosomes fit this definition. This is because they receive ins... | Molecular assembler | [
"Physics",
"Chemistry",
"Materials_science",
"Technology",
"Engineering",
"Biology"
] | 2,888 | [
"Machines",
"Behavior",
"Reproduction",
"Materials science",
"Self-replication",
"Physical systems",
"Molecular machines",
"Nanotechnology"
] |
294,316 | https://en.wikipedia.org/wiki/Hydraulic%20jump | A hydraulic jump is a phenomenon in the science of hydraulics which is frequently observed in open channel flow such as rivers and spillways. When liquid at high velocity discharges into a zone of lower velocity, a rather abrupt rise occurs in the liquid surface. The rapidly flowing liquid is abruptly slowed and increa... | Hydraulic jump | [
"Physics",
"Chemistry",
"Engineering"
] | 3,282 | [
"Vertical position",
"Physical phenomena",
"Physical quantities",
"Distance",
"Chemical engineering",
"Classical mechanics",
"Physical systems",
"Waves",
"Wave mechanics",
"Hydraulics",
"Piping",
"Fluid dynamics"
] |
294,995 | https://en.wikipedia.org/wiki/Euler%E2%80%93Lagrange%20equation | In the calculus of variations and classical mechanics, the Euler–Lagrange equations are a system of second-order ordinary differential equations whose solutions are stationary points of the given action functional. The equations were discovered in the 1750s by Swiss mathematician Leonhard Euler and Italian mathematicia... | Euler–Lagrange equation | [
"Physics",
"Mathematics"
] | 1,362 | [
"Articles containing proofs",
"Eponymous equations of physics",
"Equations of physics"
] |
295,194 | https://en.wikipedia.org/wiki/Georgi%E2%80%93Glashow%20model | In particle physics, the Georgi–Glashow model is a particular Grand Unified Theory (GUT) proposed by Howard Georgi and Sheldon Glashow in 1974. In this model, the Standard Model gauge groups SU(3) × SU(2) × U(1) are combined into a single simple gauge group SU(5). The unified group SU(5) is then thought to be spontaneo... | Georgi–Glashow model | [
"Physics"
] | 3,131 | [
"Supersymmetric quantum field theory",
"Unsolved problems in physics",
"Physics beyond the Standard Model",
"Grand Unified Theory",
"Supersymmetry",
"Symmetry"
] |
295,221 | https://en.wikipedia.org/wiki/Pati%E2%80%93Salam%20model | In physics, the Pati–Salam model is a Grand Unified Theory (GUT) proposed in 1974 by Abdus Salam and Jogesh Pati. Like other GUTs, its goal is to explain the seeming arbitrariness and complexity of the Standard Model in terms of a simpler, more fundamental theory that unifies what are in the Standard Model disparate pa... | Pati–Salam model | [
"Physics"
] | 1,136 | [
"Unsolved problems in physics",
"Physics beyond the Standard Model",
"Grand Unified Theory"
] |
295,684 | https://en.wikipedia.org/wiki/Molybdenum%20disulfide | Molybdenum disulfide (or moly) is an inorganic compound composed of molybdenum and sulfur. Its chemical formula is .
The compound is classified as a transition metal dichalcogenide. It is a silvery black solid that occurs as the mineral molybdenite, the principal ore for molybdenum. is relatively unreactive. It is un... | Molybdenum disulfide | [
"Physics",
"Chemistry"
] | 2,924 | [
"Monolayers",
"Hydrogenation catalysts",
"Semiconductor materials",
"Hydrogenation",
"Atoms",
"Matter"
] |
295,772 | https://en.wikipedia.org/wiki/Epact | The epact (, from () = added days) used to be described by medieval computists as the age of a phase of the Moon in days on 22 March; in the newer Gregorian calendar, however, the epact is reckoned as the age of the ecclesiastical moon on 1 January. Its principal use is in determining the date of Easter by computistic... | Epact | [
"Physics",
"Mathematics"
] | 1,617 | [
"Calendars",
"Physical quantities",
"Time",
"Units of time",
"Quantity",
"Spacetime",
"Units of measurement"
] |
295,829 | https://en.wikipedia.org/wiki/Reflection%20%28mathematics%29 | In mathematics, a reflection (also spelled reflexion) is a mapping from a Euclidean space to itself that is an isometry with a hyperplane as the set of fixed points; this set is called the axis (in dimension 2) or plane (in dimension 3) of reflection. The image of a figure by a reflection is its mirror image in the axi... | Reflection (mathematics) | [
"Physics",
"Mathematics"
] | 1,000 | [
"Functions and mappings",
"Mathematical analysis",
"Euclidean symmetries",
"Transformation (function)",
"Mathematical objects",
"Linear operators",
"Mathematical relations",
"Geometry",
"Symmetry"
] |
295,917 | https://en.wikipedia.org/wiki/Noncommutative%20geometry | Noncommutative geometry (NCG) is a branch of mathematics concerned with a geometric approach to noncommutative algebras, and with the construction of spaces that are locally presented by noncommutative algebras of functions, possibly in some generalized sense. A noncommutative algebra is an associative algebra in which... | Noncommutative geometry | [
"Physics"
] | 2,250 | [
"Unsolved problems in physics",
"Quantum mechanics",
"Quantum gravity",
"Mathematical quantization",
"Physics beyond the Standard Model"
] |
296,036 | https://en.wikipedia.org/wiki/Technicolor%20%28physics%29 | Technicolor theories are models of physics beyond the Standard Model that address electroweak gauge symmetry breaking, the mechanism through which W and Z bosons acquire masses. Early technicolor theories were modelled on quantum chromodynamics (QCD), the "color" theory of the strong nuclear force, which inspired thei... | Technicolor (physics) | [
"Physics",
"Mathematics"
] | 6,724 | [
"Scalar physical quantities",
"Physical phenomena",
"Physical quantities",
"Quantity",
"Mass",
"Unsolved problems in physics",
"Electroweak theory",
"Size",
"Particle physics",
"Fundamental interactions",
"Wikipedia categories named after physical quantities",
"Physics beyond the Standard Mode... |
296,060 | https://en.wikipedia.org/wiki/Vacuum%20expectation%20value | In quantum field theory the vacuum expectation value (also called condensate or simply VEV) of an operator is its average or expectation value in the vacuum. The vacuum expectation value of an operator O is usually denoted by One of the most widely used examples of an observable physical effect that results from the v... | Vacuum expectation value | [
"Physics"
] | 407 | [
"Standard Model",
"Quantum field theory",
"Quantum mechanics",
"Particle physics",
"Quantum physics stubs"
] |
296,077 | https://en.wikipedia.org/wiki/Instanton | An instanton (or pseudoparticle) is a notion appearing in theoretical and mathematical physics. An instanton is a classical solution to equations of motion with a finite, non-zero action, either in quantum mechanics or in quantum field theory. More precisely, it is a solution to the equations of motion of the classical... | Instanton | [
"Physics"
] | 5,130 | [
"Theoretical physics",
"Quantum mechanics"
] |
296,079 | https://en.wikipedia.org/wiki/Bogomol%27nyi%E2%80%93Prasad%E2%80%93Sommerfield%20bound | In the classical bosonic sector of a supersymmetric field theory, the Bogomol'nyi–Prasad–Sommerfield (BPS) bound (named after Evgeny Bogomolny, M.K. Prasad, and Charles Sommerfield) provides a lower limit on the energy of static field configurations, depending on their topological charges or boundary conditions at spa... | Bogomol'nyi–Prasad–Sommerfield bound | [
"Physics"
] | 2,522 | [
"Quantum field theory",
"Quantum mechanics"
] |
296,428 | https://en.wikipedia.org/wiki/Admittance | In electrical engineering, admittance is a measure of how easily a circuit or device will allow a current to flow. It is defined as the reciprocal of impedance, analogous to how conductance and resistance are defined. The SI unit of admittance is the siemens (symbol S); the older, synonymous unit is mho, and its symbol... | Admittance | [
"Physics",
"Mathematics"
] | 801 | [
"Physical phenomena",
"Physical quantities",
"Quantity",
"Wikipedia categories named after physical quantities",
"Physical properties",
"Electrical resistance and conductance"
] |
296,435 | https://en.wikipedia.org/wiki/Electrical%20susceptance | In electrical engineering, susceptance () is the imaginary part of admittance (), where the real part is conductance (). The reciprocal of admittance is impedance (), where the imaginary part is reactance () and the real part is resistance (). In SI units, susceptance is measured in siemens (S).
Origin
The term was co... | Electrical susceptance | [
"Physics",
"Mathematics",
"Engineering"
] | 787 | [
"Physical phenomena",
"Physical quantities",
"Quantity",
"Electrical engineering",
"Physical properties"
] |
25,451,462 | https://en.wikipedia.org/wiki/SEMAT | SEMAT (Software Engineering Method and Theory) is an initiative to reshape software engineering such that software engineering qualifies as a rigorous discipline. The initiative was launched in December 2009 by Ivar Jacobson, Bertrand Meyer, and Richard Soley with a call for action statement and a vision statement. Th... | SEMAT | [
"Mathematics",
"Technology",
"Engineering"
] | 1,980 | [
"Systems engineering",
"Software engineering organizations",
"Computer engineering",
"Applied mathematics",
"Software engineering",
"Operations research",
"Information technology"
] |
25,451,813 | https://en.wikipedia.org/wiki/Plasmonic%20solar%20cell | A plasmonic-enhanced solar cell, commonly referred to simply as plasmonic solar cell, is a type of solar cell (including thin-film or wafer-based cells) that converts light into electricity with the assistance of plasmons, but where the photovoltaic effect occurs in another material.
A direct plasmonic solar cell is ... | Plasmonic solar cell | [
"Physics",
"Chemistry",
"Materials_science"
] | 5,204 | [
"Plasmonics",
"Surface science",
"Condensed matter physics",
"Nanotechnology",
"Solid state engineering"
] |
25,453,985 | https://en.wikipedia.org/wiki/Atomic%20clock | An atomic clock is a clock that measures time by monitoring the resonant frequency of atoms. It is based on atoms having different energy levels. Electron states in an atom are associated with different energy levels, and in transitions between such states they interact with a very specific frequency of electromagnetic... | Atomic clock | [
"Physics",
"Chemistry",
"Technology",
"Engineering"
] | 8,893 | [
"Resonance",
"Physical phenomena",
"Physical quantities",
"Time measurement systems",
"Time",
"Electronic test equipment",
"Measuring instruments",
"Waves",
"Scattering",
"Spacetime"
] |
1,940,824 | https://en.wikipedia.org/wiki/Cyanogen%20iodide | Cyanogen iodide or iodine cyanide (ICN) is a pseudohalogen composed of iodine and the cyanide group. It is a highly toxic inorganic compound. It occurs as white crystals that react slowly with water to form hydrogen cyanide.
Synthesis
Cyanogen iodide is prepared by combining I2 and a cyanide, most commonly sodium cyan... | Cyanogen iodide | [
"Physics",
"Chemistry"
] | 597 | [
"Pseudohalogens",
"Inorganic compounds",
"Molecules",
"Triatomic molecules",
"Matter"
] |
1,942,466 | https://en.wikipedia.org/wiki/High%20resolution%20electron%20energy%20loss%20spectroscopy | High resolution electron energy loss spectroscopy (HREELS) is a tool used in surface science. The inelastic scattering of electrons from surfaces is utilized to study electronic excitations or vibrational modes of the surface of a material or of molecules adsorbed to a surface. In contrast to other electron energy loss... | High resolution electron energy loss spectroscopy | [
"Physics",
"Chemistry"
] | 3,070 | [
"Electron spectroscopy",
"Vibrational spectroscopy",
"Spectroscopy",
"Spectrum (physical sciences)"
] |
1,942,497 | https://en.wikipedia.org/wiki/Vibronic%20coupling | Vibronic coupling (also called nonadiabatic coupling or derivative coupling) in a molecule involves the interaction between electronic and nuclear vibrational motion. The term "vibronic" originates from the combination of the terms "vibrational" and "electronic", denoting the idea that in a molecule, vibrational and e... | Vibronic coupling | [
"Physics",
"Chemistry"
] | 2,324 | [
"Physical phenomena",
"Quantum chemistry",
"Spectrum (physical sciences)",
"Molecular physics",
"Molecular vibration",
"Quantum mechanics",
"Classical mechanics",
"Theoretical chemistry",
"Motion (physics)",
"Dynamics (mechanics)",
" molecular",
"Atomic",
"Spectroscopy",
" and optical phys... |
1,943,694 | https://en.wikipedia.org/wiki/Single-molecule%20magnet | A single-molecule magnet (SMM) is a metal-organic compound that has superparamagnetic behavior below a certain blocking temperature at the molecular scale. In this temperature range, an SMM exhibits magnetic hysteresis of purely molecular origin. In contrast to conventional bulk magnets and molecule-based magnets, coll... | Single-molecule magnet | [
"Physics",
"Chemistry",
"Materials_science",
"Engineering"
] | 2,481 | [
"Phases of matter",
"Quantum mechanics",
"Materials science",
"Quantum magnetism",
"Condensed matter physics",
"Matter"
] |
1,943,968 | https://en.wikipedia.org/wiki/Cativa%20process | The Cativa process is a method for the production of acetic acid by the carbonylation of methanol. The technology, which is similar to the Monsanto process, was developed by BP Chemicals and is under license by BP Plc. The process is based on an iridium-containing catalyst, such as the complex [Ir(CO)2I2]− (1).
The C... | Cativa process | [
"Chemistry"
] | 481 | [
"Catalysis",
"Chemical kinetics",
"Organometallic chemistry"
] |
1,944,381 | https://en.wikipedia.org/wiki/Falling%20film%20evaporator | A falling film evaporator is an industrial device to concentrate solutions, especially with heat sensitive components. The evaporator is a special type of heat exchanger.
General
In general evaporation takes place inside vertical tubes, but there are also applications where the process fluid evaporates on the outside... | Falling film evaporator | [
"Chemistry",
"Engineering"
] | 985 | [
"Chemical equipment",
"Distillation",
"Evaporators"
] |
1,944,711 | https://en.wikipedia.org/wiki/Indel | Indel (insertion-deletion) is a molecular biology term for an insertion or deletion of bases in the genome of an organism. Indels ≥ 50 bases in length are classified as structural variants.
In coding regions of the genome, unless the length of an indel is a multiple of 3, it will produce a frameshift mutation. For exa... | Indel | [
"Chemistry",
"Biology"
] | 683 | [
"Biochemistry",
"Molecular biology"
] |
1,944,887 | https://en.wikipedia.org/wiki/Synovial%20bursa | A synovial bursa, usually simply bursa (: bursae or bursas), is a small fluid-filled sac lined by synovial membrane with an inner capillary layer of viscous synovial fluid (similar in consistency to that of a raw egg white). It provides a cushion between bones and tendons and/or muscles around a joint. This helps to re... | Synovial bursa | [
"Biology"
] | 514 | [
"Organ systems",
"Musculoskeletal system"
] |
1,944,940 | https://en.wikipedia.org/wiki/Internal%20fertilization | Internal fertilization is the union of an egg and sperm cell during sexual reproduction inside the female body. Internal fertilization, unlike its counterpart, external fertilization, brings more control to the female with reproduction. For internal fertilization to happen there needs to be a method for the male to int... | Internal fertilization | [
"Biology"
] | 1,656 | [
"Reproduction in animals",
"Behavior",
"Reproduction"
] |
1,945,043 | https://en.wikipedia.org/wiki/Whorl | A whorl ( or ) is an individual circle, oval, volution or equivalent in a whorled pattern, which consists of a spiral or multiple concentric objects (including circles, ovals and arcs).
In nature
For mollusc whorls, the body whorl in a mollusc shell is the most recently formed whorl of a spiral shell, terminating in ... | Whorl | [
"Mathematics"
] | 100 | [
"Geometric shapes",
"Mathematical objects",
"Geometric objects",
"Geometry",
"Geometry stubs"
] |
1,945,275 | https://en.wikipedia.org/wiki/Wigner%20effect | The Wigner effect (named for its discoverer, Eugene Wigner), also known as the discomposition effect or Wigner's disease, is the displacement of atoms in a solid caused by neutron radiation.
Any solid can display the Wigner effect. The effect is of most concern in neutron moderators, such as graphite, intended to red... | Wigner effect | [
"Physics",
"Chemistry",
"Materials_science",
"Engineering"
] | 738 | [
"Physical phenomena",
"Crystallographic defects",
"Phases of matter",
"Materials science",
"Nuclear technology",
"Crystallography",
"Radiation",
"Condensed matter physics",
"Nuclear physics",
"Radiation effects",
"Materials degradation",
"Matter"
] |
1,945,347 | https://en.wikipedia.org/wiki/Link%20budget | A link budget is an accounting of all of the power gains and losses that a communication signal experiences in a telecommunication system; from a transmitter, through a communication medium such as radio waves, cable, waveguide, or optical fiber, to the receiver. It is an equation giving the received power from the tr... | Link budget | [
"Physics",
"Engineering"
] | 1,822 | [
"Physical phenomena",
"Telecommunications engineering",
"Spectrum (physical sciences)",
"Radio frequency propagation",
"Electromagnetic spectrum",
"Waves",
"Electrical engineering"
] |
21,056,112 | https://en.wikipedia.org/wiki/Powder%20mixture | A powder is an assembly of dry particles dispersed in air. If two different powders are mixed perfectly, theoretically, three types of powder mixtures can be obtained: the random mixture, the ordered mixture or the interactive mixture.
Different powder types
A powder is called free-flowing if the particles do not st... | Powder mixture | [
"Physics",
"Chemistry",
"Materials_science",
"Engineering"
] | 711 | [
"Pharmacology",
"Applied and interdisciplinary physics",
"Routes of administration",
"Materials science",
"Materials",
"Powders",
"nan",
"Particle technology",
"Granularity of materials",
"Matter"
] |
21,057,904 | https://en.wikipedia.org/wiki/Japanese%20encephalitis%20vaccine | Japanese encephalitis vaccine is a vaccine that protects against Japanese encephalitis. The vaccines are more than 90% effective. The duration of protection with the vaccine is not clear but its effectiveness appears to decrease over time. Doses are given either by injection into a muscle or just under the skin.
It is... | Japanese encephalitis vaccine | [
"Biology"
] | 623 | [
"Vaccination",
"Vaccines"
] |
21,064,035 | https://en.wikipedia.org/wiki/Locks%20with%20ordered%20sharing | In databases and transaction processing the term Locks with ordered sharing comprises several variants of the two-phase locking (2PL) concurrency control protocol generated by changing the blocking semantics of locks upon conflicts. Further softening of locks eliminates thrashing.
See also
Autonomic computing
Refere... | Locks with ordered sharing | [
"Technology"
] | 186 | [
"Data management",
"Data"
] |
21,065,169 | https://en.wikipedia.org/wiki/Cartan%E2%80%93Eilenberg%20resolution | In homological algebra, the Cartan–Eilenberg resolution is in a sense, a resolution of a chain complex. It can be used to construct hyper-derived functors. It is named in honor of Henri Cartan and Samuel Eilenberg.
Definition
Let be an Abelian category with enough projectives, and let be a chain complex with object... | Cartan–Eilenberg resolution | [
"Mathematics"
] | 329 | [
"Fields of abstract algebra",
"Mathematical structures",
"Category theory",
"Homological algebra"
] |
21,066,540 | https://en.wikipedia.org/wiki/Ion%20gel | An Ion gel (or Ionogel) is a composite material consisting of an ionic liquid immobilized by an inorganic or a polymer matrix. The material has the quality of maintaining high ionic conductivity while in the solid state. To create an ion gel, the solid matrix is mixed or synthesized in-situ with an ionic liquid. A comm... | Ion gel | [
"Physics"
] | 1,287 | [
"Materials",
"Matter"
] |
8,451,369 | https://en.wikipedia.org/wiki/Podocin | Podocin is a protein component of the filtration slits of podocytes. Glomerular capillary endothelial cells, the glomerular basement membrane and the filtration slits function as the filtration barrier of the kidney glomerulus.
Mutations in the podocin gene NPHS2 can cause nephrotic syndrome, such as focal segmental gl... | Podocin | [
"Chemistry"
] | 255 | [
"Biomolecules by chemical classification",
"Proteins",
"Molecular biology"
] |
8,453,546 | https://en.wikipedia.org/wiki/Open%20Regulatory%20Annotation%20Database | The Open Regulatory Annotation Database (also known as ORegAnno) is designed to promote community-based curation of regulatory information. Specifically, the database contains information about regulatory regions, transcription factor binding sites, regulatory variants, and haplotypes.
Overview
Data Management
For e... | Open Regulatory Annotation Database | [
"Chemistry",
"Biology"
] | 1,341 | [
"Gene expression",
"Bioinformatics",
"Molecular genetics",
"Cellular processes",
"Molecular biology",
"Biochemistry",
"Biological databases"
] |
22,560,835 | https://en.wikipedia.org/wiki/Downhole%20heat%20exchanger | A downhole heat exchanger, (DHE) also called a borehole heat exchanger, (BHE) is a heat exchanger installed inside a vertical or inclined borehole. It is used to capture or dissipate heat to or from the ground. DHT's are used for geothermal heating, sometimes with the help of a geothermal heat pump. Downhole heat excha... | Downhole heat exchanger | [
"Chemistry",
"Engineering"
] | 322 | [
"Building engineering",
"Chemical equipment",
"Civil engineering",
"Heat exchangers",
"Architecture"
] |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.