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 |
|---|---|---|---|---|---|---|
44,745,151 | https://en.wikipedia.org/wiki/Automotive%20Dealership%20Institute | Automotive Dealership Institute is an Arizona-based and licensed training program that offers classroom and online instruction in management, finance, and insurance for the auto industry.
History
Automotive Dealership Institute was founded in December 2004. The institute offers management training for automotive deal... | Automotive Dealership Institute | [
"Physics"
] | 89 | [
"Physical systems",
"Transport",
"Transport education"
] |
44,747,619 | https://en.wikipedia.org/wiki/Chemiresistor | A chemiresistor is a material that changes its electrical resistance in response to changes in the nearby chemical environment. Chemiresistors are a class of chemical sensors that rely on the direct chemical interaction between the sensing material and the analyte. The sensing material and the analyte can interact by c... | Chemiresistor | [
"Physics",
"Technology",
"Engineering"
] | 1,513 | [
"Materials",
"Sensors",
"Matter",
"Measuring instruments"
] |
44,750,391 | https://en.wikipedia.org/wiki/Griffiths%20group | In mathematics, more specifically in algebraic geometry, the Griffiths group of a projective complex manifold X measures the difference between homological equivalence and algebraic equivalence, which are two important equivalence relations of algebraic cycles.
More precisely, it is defined as
where denotes the grou... | Griffiths group | [
"Mathematics"
] | 122 | [
"Fields of abstract algebra",
"Algebraic geometry"
] |
44,750,399 | https://en.wikipedia.org/wiki/Tri-level%20sync | Tri-level sync is an analogue video synchronization pulse primarily used for the locking of high-definition video signals (genlock).
It is preferred in HD environments over black and burst, as timing jitter is reduced due to the nature of its higher frequency. It also benefits from having no DC content, as the pulses ... | Tri-level sync | [
"Engineering"
] | 334 | [
"Broadcast engineering",
"Electronic engineering",
"Telecommunications engineering",
"Synchronization"
] |
44,750,726 | https://en.wikipedia.org/wiki/Design%20space%20verification | Design space verification is defined by the European Medicines Agency as the verification that material inputs and processes are able to scale to commercial manufacturing levels while maintaining a standard of quality. Therefore, it is difficult to conduct design space verification while not operating at target levels ... | Design space verification | [
"Engineering"
] | 299 | [
"Software engineering",
"Formal methods"
] |
44,752,216 | https://en.wikipedia.org/wiki/Elena%20Aprile | Elena Aprile (born March 12, 1954) is an Italian-American experimental particle physicist. She has been a professor of physics at Columbia University since 1986. She is the founder and spokesperson of the XENON Dark Matter Experiment. Aprile is well known for her work with noble liquid detectors and for her contributi... | Elena Aprile | [
"Physics"
] | 816 | [
"Particle physicists",
"Particle physics"
] |
21,912,073 | https://en.wikipedia.org/wiki/Neutron%20capture%20nucleosynthesis | Neutron capture nucleosynthesis describes two nucleosynthesis pathways: the r-process and the s-process, for rapid and slow neutron captures, respectively. R-process describes neutron capture in a region of high neutron flux, such as during supernova nucleosynthesis after core-collapse, and yields neutron-rich nuclides... | Neutron capture nucleosynthesis | [
"Physics",
"Chemistry"
] | 170 | [
"Nuclear fission",
"Astrophysics",
"Nucleosynthesis",
"Nuclear chemistry stubs",
"Nuclear physics",
"Nuclear fusion"
] |
24,884,635 | https://en.wikipedia.org/wiki/Tiamulin | Tiamulin (previously thiamutilin) is a pleuromutilin antibiotic drug that is used in veterinary medicine particularly for pigs and poultry.
Tiamulin is a diterpene antimicrobial with a pleuromutilin chemical structure similar to that of valnemulin.
References
Pleuromutilin antibiotics
Secondary alcohols
Ketones
Car... | Tiamulin | [
"Chemistry"
] | 98 | [
"Ketones",
"Functional groups"
] |
24,891,245 | https://en.wikipedia.org/wiki/Dental%20compomer | Dental compomers, also known as polyacid-modified resin composite, are used in dentistry as a filling material. They were introduced in the early 1990s as a hybrid of two other dental materials, dental composites and glass ionomer cement, in an effort to combine their desirable properties: aesthetics for dental composi... | Dental compomer | [
"Physics"
] | 1,872 | [
"Materials",
"Composite materials",
"Dental materials",
"Matter"
] |
33,506,152 | https://en.wikipedia.org/wiki/Phytoextraction%20process | Phytoextraction is a subprocess of phytoremediation in which plants remove dangerous elements or compounds from soil or water, most usually heavy metals, metals that have a high density and may be toxic to organisms even at relatively low concentrations. The heavy metals that plants extract are toxic to the plants as w... | Phytoextraction process | [
"Chemistry",
"Engineering",
"Biology",
"Environmental_science"
] | 1,266 | [
"Ecological restoration",
"Phytoremediation plants",
"Biodegradation",
"Environmental engineering",
"Ecological techniques",
"Bioremediation",
"Environmental soil science"
] |
33,509,814 | https://en.wikipedia.org/wiki/Inverse%20electron-demand%20Diels%E2%80%93Alder%20reaction | The inverse electron demand Diels–Alder reaction, or DAINV or IEDDA is an organic chemical reaction, in which two new chemical bonds and a six-membered ring are formed. It is related to the Diels–Alder reaction, but unlike the Diels–Alder (or DA) reaction, the DAINV is a cycloaddition between an electron-rich dienophi... | Inverse electron-demand Diels–Alder reaction | [
"Chemistry"
] | 3,017 | [
"Name reactions"
] |
33,509,906 | https://en.wikipedia.org/wiki/Superparamagnetic%20iron%E2%80%93platinum%20particles | Superparamagnetic iron platinum particles (SIPPs) are nanoparticles that have been reported as magnetic resonance imaging contrast agents. These are, however, investigational agents which have not yet been tried in humans.
References
Magnetic resonance imaging
MRI contrast agents | Superparamagnetic iron–platinum particles | [
"Chemistry"
] | 54 | [
"Magnetic resonance imaging",
"Nuclear chemistry stubs",
"Nuclear magnetic resonance",
"Nuclear magnetic resonance stubs"
] |
33,510,850 | https://en.wikipedia.org/wiki/Windowpane%20oyster | The windowpane oyster (Placuna placenta) is a bivalve marine mollusk in the family of Placunidae. It is edible, but valued more for its shell (and its rather small pearls). The oyster's shells have been used for thousands of years as a glass substitute because of their durability and translucence. More recently, they h... | Windowpane oyster | [
"Physics",
"Engineering"
] | 512 | [
"Building engineering",
"Construction",
"Materials",
"Building materials",
"Matter",
"Architecture"
] |
33,511,110 | https://en.wikipedia.org/wiki/Nanofoundry | A nanofoundry is considered to be a foundry that performs on a scale similar to nanotechnology. This concept makes it similar to the role that the nanofactory would play because it is considered to be a factory that operates on that same scale model. The closest thing that nature has to a nanofoundry is the simple biol... | Nanofoundry | [
"Materials_science",
"Engineering"
] | 561 | [
"Nanotechnology",
"Materials science"
] |
33,518,864 | https://en.wikipedia.org/wiki/KIVA%20%28software%29 | KIVA is a family of Fortran-based computational fluid dynamics software developed by Los Alamos National Laboratory (LANL). The software predicts complex fuel and air flows as well as ignition, combustion, and pollutant-formation processes in engines. The KIVA models have been used to understand combustion chemistry pr... | KIVA (software) | [
"Physics",
"Chemistry",
"Technology"
] | 2,088 | [
"Computational fluid dynamics",
"Physics software",
"Computational physics",
"Industrial software",
"Industrial computing",
"Fluid dynamics"
] |
35,089,957 | https://en.wikipedia.org/wiki/The%20Biology%20of%20the%20Cell%20Surface | The Biology of the Cell Surface is a book by American biologist Ernest Everett Just. It was published by P. Blakiston’s Son & Co in 1939.
Just began writing the book in 1934 in Naples and finished it in France, shortly before being sent to a prisoner-of-war camp. He considered the book to be his "crowning achievement"... | The Biology of the Cell Surface | [
"Biology"
] | 164 | [
"Cell biology"
] |
35,090,132 | https://en.wikipedia.org/wiki/World%20Hydrogen%20Energy%20Conference | World Hydrogen Energy Conference (WHEC) is a series of international events covering the complex issues of utilizing hydrogen as an energy carrier. These include methods of production of hydrogen, materials for hydrogen storage, infrastructure development and hydrogen utilization technologies, particularly fuel cell s... | World Hydrogen Energy Conference | [
"Engineering"
] | 108 | [
"Energy organizations",
"Hydrogen economy organizations"
] |
35,093,912 | https://en.wikipedia.org/wiki/Non-Archimedean%20geometry | In mathematics, non-Archimedean geometry is any of a number of forms of geometry in which the axiom of Archimedes is negated. An example of such a geometry is the Dehn plane. Non-Archimedean geometries may, as the example indicates, have properties significantly different from Euclidean geometry.
There are two senses ... | Non-Archimedean geometry | [
"Mathematics"
] | 380 | [
"Fields of geometry",
"Geometry"
] |
35,095,526 | https://en.wikipedia.org/wiki/Gable%20CAD | Gable CAD, or Gable 4D Series, was a British architectural computer-aided design package initially developed in the early 1980s.
History
Gable CAD was developed at the University of Sheffield in the mid-1980s under the leadership of Professor Bryan Lawson. It was spun out into Gable CAD Systems Limited (incorporated i... | Gable CAD | [
"Engineering"
] | 190 | [
"Data modeling",
"Data engineering",
"Building information modeling",
"Building engineering"
] |
29,527,111 | https://en.wikipedia.org/wiki/NGC%204452 | NGC 4452 is an edge-on lenticular galaxy that is part of the Virgo Cluster. NGC 4452 is about away from Earth and in diameter. This galaxy was first seen by William Herschel in 1784 with his telescope.
NGC 4452 is so thin that it is actually difficult to determine what type of disk galaxy it is. Its lack of a visib... | NGC 4452 | [
"Astronomy"
] | 270 | [
"Virgo (constellation)",
"Constellations"
] |
29,528,690 | https://en.wikipedia.org/wiki/List%20of%20types%20of%20numbers | Numbers can be classified according to how they are represented or according to the properties that they have.
Main types
Natural numbers (): The counting numbers {1, 2, 3, ...} are commonly called natural numbers; however, other definitions include 0, so that the non-negative integers {0, 1, 2, 3, ...} are also cal... | List of types of numbers | [
"Mathematics"
] | 1,521 | [
"Arithmetic",
"Mathematical objects",
"Numbers",
"Number-related lists"
] |
29,530,278 | https://en.wikipedia.org/wiki/ACS%20Catalysis | ACS Catalysis is a monthly peer-reviewed scientific journal established in 2011 by the American Chemical Society. The journal covers research on all aspects of heterogeneous, homogeneous, and biocatalysis. The editor-in-chief is Cathleen Crudden, who assumed the position in early 2021. The journal received the Associat... | ACS Catalysis | [
"Chemistry"
] | 207 | [
"Catalysis",
"Chemical kinetics"
] |
29,536,434 | https://en.wikipedia.org/wiki/Acoustic%20resonance%20technology | Acoustic resonance technology (ART) is an acoustic inspection technology developed by Det Norske Veritas over the past 20 years. ART exploits the phenomenon of half-wave resonance, whereby a suitably excited resonant target (such as a pipeline wall) exhibits longitudinal resonances at certain frequencies characteristic... | Acoustic resonance technology | [
"Materials_science"
] | 802 | [
"Nondestructive testing",
"Materials testing"
] |
36,149,098 | https://en.wikipedia.org/wiki/Triple-resonance%20nuclear%20magnetic%20resonance%20spectroscopy | Triple resonance experiments are a set of multi-dimensional nuclear magnetic resonance spectroscopy (NMR) experiments that link three types of atomic nuclei, most typically consisting of 1H, 15N and 13C. These experiments are often used to assign specific resonance signals to specific atoms in an isotopically-enriched... | Triple-resonance nuclear magnetic resonance spectroscopy | [
"Physics",
"Chemistry"
] | 2,000 | [
"Nuclear magnetic resonance",
"Spectrum (physical sciences)",
"Nuclear magnetic resonance spectroscopy",
"Structural biology",
"Protein structure",
"Spectroscopy"
] |
26,288,711 | https://en.wikipedia.org/wiki/Coulomb%27s%20law | Coulomb's inverse-square law, or simply Coulomb's law, is an experimental law of physics that calculates the amount of force between two electrically charged particles at rest. This electric force is conventionally called the electrostatic force or Coulomb force. Although the law was known earlier, it was first publish... | Coulomb's law | [
"Physics",
"Mathematics"
] | 3,739 | [
"Physical phenomena",
"Force",
"Electromagnetism",
"Physical quantities",
"Quantity",
"Mass",
"Mathematical objects",
"Classical mechanics",
"Equations",
"Scientific laws",
"Fundamental interactions",
"Wikipedia categories named after physical quantities",
"Matter"
] |
26,292,477 | https://en.wikipedia.org/wiki/Krichevsky%E2%80%93Trofimov%20estimator | In information theory, given an unknown stationary source with alphabet A and a sample w from , the Krichevsky–Trofimov (KT) estimator produces an estimate pi(w) of the probability of each symbol i ∈ A. This estimator is optimal in the sense that it minimizes the worst-case regret asymptotically.
For a binary alphabe... | Krichevsky–Trofimov estimator | [
"Mathematics",
"Technology",
"Engineering"
] | 166 | [
"Telecommunications engineering",
"Applied mathematics",
"Computer science",
"Information theory"
] |
26,294,679 | https://en.wikipedia.org/wiki/Mastic%20%28plant%20resin%29 | Mastic () is a resin obtained from the mastic tree (Pistacia lentiscus). It is also known as tears of Chios, being traditionally produced on the island Chios, and, like other natural resins, is produced in "tears" or droplets.
Mastic is excreted by the resin glands of certain trees and dries into pieces of brittle, tr... | Mastic (plant resin) | [
"Physics"
] | 2,033 | [
"Resins",
"Unsolved problems in physics",
"Incense material",
"Materials",
"Amorphous solids",
"Matter"
] |
26,294,691 | https://en.wikipedia.org/wiki/Water%20activity | In food science, water activity (aw) of a food is the ratio of its vapor pressure to the vapor pressure of water at the same temperature, both taken at equilibrium. Pure water has a water activity of one. Put another way, aw is the equilibrium relative humidity (ERH) expressed as a fraction instead of as a percentage. ... | Water activity | [
"Physics",
"Chemistry",
"Mathematics",
"Environmental_science"
] | 2,269 | [
"Thermodynamic properties",
"Hydrology",
"Physical quantities",
"Quantity",
"Thermodynamics",
"Water"
] |
26,295,401 | https://en.wikipedia.org/wiki/Angstr%C3%B6mquelle%20Karlsruhe | ANKA (abbreviation for „Angströmquelle Karlsruhe“) is a synchrotron light source facility at the Karlsruhe Institute of Technology (KIT) in Karlsruhe, Germany. The KIT runs ANKA as a national synchrotron light source and as a large scale user facility for the international science community. Being a large scale machine... | Angströmquelle Karlsruhe | [
"Materials_science"
] | 1,156 | [
"Materials testing",
"Synchrotron radiation facilities"
] |
26,296,965 | https://en.wikipedia.org/wiki/Chandra%E2%80%93Toueg%20consensus%20algorithm | The Chandra–Toueg consensus algorithm, published by Tushar Deepak Chandra and Sam Toueg in 1996, is an algorithm for solving consensus in a network of unreliable processes equipped with an eventually strong failure detector. The failure detector is an abstract version of timeouts; it signals to each process when other... | Chandra–Toueg consensus algorithm | [
"Technology",
"Engineering"
] | 1,018 | [
"Fault-tolerant computer systems",
"Reliability engineering",
"Computer systems"
] |
26,298,245 | https://en.wikipedia.org/wiki/Safe%20household%20water%20storage | Safe household water storage is a critical component of a Household Water Treatment and Safe Storage (HWTS) system being promoted by the World Health Organization (WHO) worldwide in areas that do not have piped drinking water. In these areas, it is not uncommon for drinking water to be stored in a pot, jar, crock or ot... | Safe household water storage | [
"Chemistry",
"Engineering",
"Environmental_science"
] | 793 | [
"Water treatment",
"Environmental engineering",
"Water technology",
"Water pollution"
] |
28,149,071 | https://en.wikipedia.org/wiki/Maxwell%27s%20thermodynamic%20surface | Maxwell’s thermodynamic surface is an 1874 sculpture made by Scottish physicist James Clerk Maxwell (1831–1879). This model provides a three-dimensional space of the various states of a fictitious substance with water-like properties. This plot has coordinates volume (x), entropy (y), and energy (z). It was based on ... | Maxwell's thermodynamic surface | [
"Physics",
"Chemistry",
"Mathematics"
] | 1,046 | [
"Thermodynamics",
"Dynamical systems"
] |
28,150,288 | https://en.wikipedia.org/wiki/Peptide%20spectral%20library | A peptide spectral library is a curated, annotated and non-redundant collection/database of LC-MS/MS peptide spectra. One essential utility of a peptide spectral library is to serve as consensus templates supporting the identification of peptides and proteins based on the correlation between the templates with experime... | Peptide spectral library | [
"Physics",
"Chemistry"
] | 871 | [
"Mass spectrometry software",
"Mass spectrometry",
"Spectrum (physical sciences)",
"Chemistry software"
] |
28,152,615 | https://en.wikipedia.org/wiki/Static%20forces%20and%20virtual-particle%20exchange | Static force fields are fields, such as a simple electric, magnetic or gravitational fields, that exist without excitations. The most common approximation method that physicists use for scattering calculations can be interpreted as static forces arising from the interactions between two bodies mediated by virtual parti... | Static forces and virtual-particle exchange | [
"Physics"
] | 4,186 | [
"Quantum field theory",
"Quantum mechanics"
] |
28,157,027 | https://en.wikipedia.org/wiki/Crystallographic%20image%20processing | Crystallographic image processing (CIP) is traditionally understood as being a set of key steps in the determination of the atomic structure of crystalline matter from high-resolution electron microscopy (HREM) images obtained in a transmission electron microscope (TEM) that is run in the parallel illumination mode. Th... | Crystallographic image processing | [
"Physics",
"Chemistry",
"Materials_science",
"Engineering"
] | 3,027 | [
"Crystallography",
"Condensed matter physics",
"Materials science"
] |
28,158,585 | https://en.wikipedia.org/wiki/Hellenic%20Trench | The Hellenic Trench (HT) is an oceanic trough located in the forearc of the Hellenic arc, an arcuate archipelago on the southern margin of the Aegean Sea plate, or Aegean Plate, also called Aegea, the basement of the Aegean Sea. The HT begins in the Ionian Sea near the mouth of the Gulf of Corinth and curves to the sou... | Hellenic Trench | [
"Physics",
"Environmental_science"
] | 5,406 | [
"Oceanography",
"Hydrology",
"Applied and interdisciplinary physics"
] |
43,258,042 | https://en.wikipedia.org/wiki/Adaptive%20immunity%20in%20jawless%20fish | Jawless vertebrates, which today consist entirely of lampreys and hagfish, have an adaptive immune system similar to that found in jawed vertebrates. The cells of the agnathan AIS have roles roughly equivalent to those of B-cells and T-cells, with three lymphocyte lineages identified so far:
VLRA (most similar to α/β ... | Adaptive immunity in jawless fish | [
"Biology"
] | 708 | [
"Immune system",
"Organ systems"
] |
43,263,796 | https://en.wikipedia.org/wiki/Hilbert%E2%80%93Kunz%20function | In algebra, the Hilbert–Kunz function of a local ring (R, m) of prime characteristic p is the function
where q is a power of p and m[q] is the ideal generated by the q-th powers of elements of the maximal ideal m.
The notion was introduced by Ernst Kunz, who used it to characterize a regular ring as a Noetherian ring... | Hilbert–Kunz function | [
"Mathematics"
] | 531 | [
"Fields of abstract algebra",
"Algebra stubs",
"Ring theory",
"Algebra"
] |
43,264,630 | https://en.wikipedia.org/wiki/Physics%20outreach | Physics outreach encompasses facets of science outreach and physics education, and a variety of activities by schools, research institutes, universities, clubs and institutions such as science museums aimed at broadening the audience for and awareness and understanding of physics. While the general public may sometimes... | Physics outreach | [
"Physics"
] | 3,780 | [
"Applied and interdisciplinary physics",
"Physics education"
] |
43,264,947 | https://en.wikipedia.org/wiki/Micro-spectrophotometry | Microspectrophotometry is the measure of the spectra of microscopic samples using different wavelengths of electromagnetic radiation (e.g. ultraviolet, visible and near infrared, etc.) It is accomplished with microspectrophotometers, cytospectrophotometers, microfluorometers, Raman microspectrophotometers, etc. A micro... | Micro-spectrophotometry | [
"Physics",
"Chemistry"
] | 539 | [
"Instrumental analysis",
"Molecular physics",
"Spectroscopy",
"Spectrum (physical sciences)"
] |
40,333,066 | https://en.wikipedia.org/wiki/Soci%C3%A9t%C3%A9%20Fran%C3%A7aise%20de%20G%C3%A9nie%20des%20Proc%C3%A9d%C3%A9s | The Société Française de Génie des Procédés (French Society of Process Engineers) or SFGP is a French organization for chemical engineers. It is a member of the European Federation of Chemical Engineering and acts as joint Secretariat, and of la Fédération Française pour les sciences de la Chimie (FFC). It publishes ... | Société Française de Génie des Procédés | [
"Chemistry",
"Engineering"
] | 269 | [
"Chemical engineering",
"Chemical engineering organizations"
] |
40,333,498 | https://en.wikipedia.org/wiki/Chaplygin%20sleigh | The Chaplygin sleigh is a simple pedagogical example of a nonholonomic system in mechanics, described by Sergey Chaplygin. It consists of a body that slides frictionlessly on a horizontal plane, with a knife edge that constrains its motion so that the knife slides only longitudinally. Because this constraint is nonholo... | Chaplygin sleigh | [
"Physics",
"Engineering"
] | 476 | [
"Mechanics",
"Mechanical engineering"
] |
40,335,735 | https://en.wikipedia.org/wiki/Topological%20fluid%20dynamics | Topological ideas are relevant to fluid dynamics (including magnetohydrodynamics) at the kinematic level, since any fluid flow involves continuous deformation of any transported scalar or vector field. Problems of stirring and mixing are particularly susceptible to topological techniques. Thus, for example, the Thurst... | Topological fluid dynamics | [
"Chemistry",
"Mathematics",
"Engineering"
] | 874 | [
"Chemical engineering",
"Topology",
"Piping",
"Fluid dynamics",
"Topological dynamics",
"Dynamical systems"
] |
40,339,867 | https://en.wikipedia.org/wiki/Rectified%20tesseractic%20honeycomb | In four-dimensional Euclidean geometry, the rectified tesseractic honeycomb is a uniform space-filling tessellation (or honeycomb) in Euclidean 4-space. It is constructed by a rectification of a tesseractic honeycomb which creates new vertices on the middle of all the original edges, rectifying the cells into rectified... | Rectified tesseractic honeycomb | [
"Physics",
"Chemistry",
"Materials_science"
] | 424 | [
"Tessellation",
"Crystallography",
"Honeycombs (geometry)",
"Symmetry"
] |
40,341,221 | https://en.wikipedia.org/wiki/Jeewanu | Jeewanu (Sanskrit for "particles of life") are synthetic chemical particles that possess cell-like structure and seem to have some functional properties; that is, they are a model of primitive cells, or protocells. It was first synthesised by Krishna Bahadur (20 January 1926 — 5 August 1994), an Indian chemist and his ... | Jeewanu | [
"Chemistry",
"Engineering",
"Biology"
] | 1,396 | [
"Synthetic biology",
"Evolutionary biology",
"Biological engineering",
"Origin of life",
"Membrane biology",
"Prebiotic chemistry",
"Bioinformatics",
"Molecular genetics",
"Molecular biology",
"Biological hypotheses"
] |
40,341,247 | https://en.wikipedia.org/wiki/Tridemorph | Tridemorph is a fungicide used to control Erysiphe graminis. It was developed by BASF in the 1960s who use the trade name Calixin. The World Health Organization has categorized it as a Class II "moderately hazardous" pesticide because it is believed harmful if swallowed and can cause irritation to skin and eyes.
One t... | Tridemorph | [
"Chemistry",
"Biology"
] | 112 | [
"Fungicides",
"Biocides"
] |
41,765,358 | https://en.wikipedia.org/wiki/Phi%20Josephson%20junction | A φ Josephson junction (pronounced phi Josephson junction) is a particular type of the Josephson junction, which has a non-zero Josephson phase φ across it in the ground state. A π Josephson junction, which has the minimum energy corresponding to the phase of π, is a specific example of it.
Introduction
The Josephson... | Phi Josephson junction | [
"Physics",
"Materials_science",
"Engineering"
] | 1,198 | [
"Josephson effect",
"Physical quantities",
"Superconductivity",
"Materials science",
"Condensed matter physics",
"Electrical resistance and conductance"
] |
41,766,064 | https://en.wikipedia.org/wiki/Film%20coating | A film coating is a thin polymer-based coat that is typically sprayed onto solid pharmaceutical dosage forms, such as tablets, capsules, pellets or granules. Film coating can impact both its appearance and its pharmacokinetics making it an essential process in making the final drug product.
Film coatings are the most ... | Film coating | [
"Chemistry",
"Materials_science"
] | 867 | [
"Pharmacology",
"Pharmacy",
"Coatings",
"Polymer chemistry",
"Polymers"
] |
41,767,506 | https://en.wikipedia.org/wiki/Structured%20what-if%20technique | The structured what-if technique (SWIFT) is a prospective hazards analysis method that uses structured brainstorming with guidewords and prompts to identify risks, with the aim of being quicker than more intensive methods like failure mode and effects analysis (FMEA). It is used in various settings, including healthcar... | Structured what-if technique | [
"Chemistry",
"Engineering"
] | 128 | [
"Systems engineering",
"Reliability analysis",
"Reliability engineering",
"Safety engineering",
"Process safety",
"Chemical process engineering"
] |
41,768,703 | https://en.wikipedia.org/wiki/GLIC | The GLIC receptor is a bacterial (Gloeobacter) Ligand-gated Ion Channel, homolog to the nicotinic acetylcholine receptors. It is a proton-gated (the channel opens when it binds a proton, ion), cation-selective channel (it selectively lets the positive ions through). Like the nicotinic acetylcholine receptors is a func... | GLIC | [
"Chemistry",
"Biology"
] | 331 | [
"Ionotropic receptors",
"Signal transduction",
"Protein classification",
"Molecular neuroscience",
"Molecular biology",
"Biochemistry",
"Protein families",
"Neurochemistry",
"Ion channels"
] |
46,388,068 | https://en.wikipedia.org/wiki/Phage%20P22%20tailspike%20protein | The tailspike protein (P22TSP) of Enterobacteria phage P22 mediates the recognition and adhesion between the bacteriophage and the surface of Salmonella enterica cells. It is anchored within the viral coat and recognizes the O-antigen portion of the lipopolysaccharide (LPS) on the outer-membrane of Gram-negative bacter... | Phage P22 tailspike protein | [
"Chemistry"
] | 1,126 | [
"Biomolecules by chemical classification",
"Proteins",
"Molecular biology"
] |
46,389,483 | https://en.wikipedia.org/wiki/Crossover%20interference | Crossover interference is the term used to refer to the non-random placement of crossovers with respect to each other during meiosis. The term is attributed to Hermann Joseph Muller, who observed that one crossover "interferes with the coincident occurrence of another crossing over in the same pair of chromosomes, and ... | Crossover interference | [
"Chemistry",
"Biology"
] | 703 | [
"Molecular genetics",
"Cellular processes",
"Molecular biology"
] |
37,572,010 | https://en.wikipedia.org/wiki/Yerba%20buena | Yerba buena or hierba buena is the Spanish name for a number of aromatic plants, most of which belong to the mint family. Yerba buena translates as "good herb". The specific plant species regarded as yerba buena varies from region to region, depending on what grows wild in the surrounding landscape, or which species is... | Yerba buena | [
"Biology"
] | 447 | [
"Plant common names",
"Common names of organisms",
"Plants"
] |
37,579,128 | https://en.wikipedia.org/wiki/Two-dimensional%20polymer | A two-dimensional polymer (2DP) is a sheet-like monomolecular macromolecule consisting of laterally connected repeat units with end groups along all edges. This recent definition of 2DP is based on Hermann Staudinger's polymer concept from the 1920s. According to this, covalent long chain molecules ("Makromoleküle") do... | Two-dimensional polymer | [
"Chemistry",
"Materials_science",
"Engineering"
] | 2,326 | [
"Materials science",
"Polymer chemistry"
] |
37,580,917 | https://en.wikipedia.org/wiki/Moving%20load | In structural dynamics, a moving load changes the point at which the load is applied over time. Examples include a vehicle that travels across a bridge and a train moving along a track.
Properties
In computational models, load is usually applied as
a simple massless force,
an oscillator, or
an inertial force (mas... | Moving load | [
"Physics",
"Engineering"
] | 697 | [
"Structural engineering",
"Mechanics",
"Mechanical vibrations"
] |
21,921,011 | https://en.wikipedia.org/wiki/Retrograde%20condensation | Retrograde condensation occurs when gas in a tube is compressed beyond the point of condensation with the effect that the liquid evaporates again. This is the opposite of condensation: the so-called retrograde condensation.
Description
If the volume of two gases that are kept at constant temperature and pressure below... | Retrograde condensation | [
"Physics",
"Chemistry"
] | 314 | [
"Physical phenomena",
"Phase transitions",
"Phases of matter",
"Critical phenomena",
"Statistical mechanics",
"Matter"
] |
21,921,347 | https://en.wikipedia.org/wiki/Virtual%20prototyping | Virtual prototyping is a method in the process of product development. It involves using computer-aided design (CAD), computer-automated design (CAutoD) and computer-aided engineering (CAE) software to validate a design before committing to making a physical prototype. This is done by creating (usually 3D) computer gen... | Virtual prototyping | [
"Engineering"
] | 735 | [
"Automotive engineering",
"Mechanical engineering by discipline",
"Aerospace engineering"
] |
21,923,868 | https://en.wikipedia.org/wiki/Oscillating%20gene | In molecular biology, an oscillating gene is a gene that is expressed in a rhythmic pattern or in periodic cycles. Oscillating genes are usually circadian and can be identified by periodic changes in the state of an organism. Circadian rhythms, controlled by oscillating genes, have a period of approximately 24 hours. ... | Oscillating gene | [
"Chemistry",
"Biology"
] | 2,234 | [
"Biochemistry",
"Chronobiology",
"Molecular biology"
] |
21,924,889 | https://en.wikipedia.org/wiki/Nanopunk | Nanopunk refers to an emerging subgenre of science fiction that is still very much in its infancy in comparison to its ancestor-genre, cyberpunk, and some of its other derivatives.
The genre is especially similar to biopunk, but describes a world where nanites and bio-nanotechnologies are widely in use and nanotechnol... | Nanopunk | [
"Materials_science",
"Technology",
"Engineering",
"Biology"
] | 982 | [
"Genetic engineering",
"Transhumanism",
"Fiction about nanotechnology",
"Ethics of science and technology",
"Nanotechnology"
] |
21,929,114 | https://en.wikipedia.org/wiki/SENSOR-Pesticides | Sentinel Event Notification System for Occupational Risks (SENSOR)-Pesticides is a U.S. state-based surveillance program that monitors pesticide-related illness and injury. It is administered by the National Institute for Occupational Safety and Health (NIOSH), twelve state health agencies participate. NIOSH provides ... | SENSOR-Pesticides | [
"Chemistry",
"Environmental_science"
] | 2,689 | [
"Chemical accident",
"nan",
"Epidemiology",
"Chemical safety",
"Environmental social science"
] |
39,033,457 | https://en.wikipedia.org/wiki/Quake%20Global | Quake Global is a technology company that provides products for asset tracking, location, and analytics. Quake Global designs and implements facility or campus level asset tracking products typically based around RFID and/ or BLE technology. In 2012, Quake Global received an Inc. 5000 rank of 82 in the San Diego Metro ... | Quake Global | [
"Engineering"
] | 490 | [
"Wireless",
"Telecommunications engineering"
] |
39,033,720 | https://en.wikipedia.org/wiki/Stochastic%20cellular%20automaton | Stochastic cellular automata or probabilistic cellular automata (PCA) or random cellular automata or locally interacting Markov chains are an important extension of cellular automaton. Cellular automata are a discrete-time dynamical system of interacting entities, whose state is discrete.
The state of the collection o... | Stochastic cellular automaton | [
"Physics",
"Materials_science",
"Mathematics"
] | 461 | [
"Self-organization",
"Recreational mathematics",
"Lattice models",
"Computational physics",
"Cellular automata",
"Condensed matter physics",
"Statistical mechanics",
"Dynamical systems"
] |
39,034,242 | https://en.wikipedia.org/wiki/GP5%20chip | The GP5 is a co-processor accelerator built to accelerate discrete belief propagation on factor graphs and other large-scale tensor product operations for machine learning. It is related to, and anticipated by a number of years, the Google Tensor Processing Unit
It is designed to run as a co-processor with another co... | GP5 chip | [
"Materials_science",
"Technology",
"Engineering"
] | 352 | [
"Integrated circuits",
"Computer engineering",
"Microtechnology",
"Materials science"
] |
39,036,556 | https://en.wikipedia.org/wiki/Photon%20counting | Photon counting is a technique in which individual photons are counted using a single-photon detector (SPD). A single-photon detector emits a pulse of signal for each detected photon. The counting efficiency is determined by the quantum efficiency and the system's electronic losses.
Many photodetectors can be configur... | Photon counting | [
"Technology",
"Engineering"
] | 992 | [
"Particle detectors",
"Measuring instruments"
] |
39,039,959 | https://en.wikipedia.org/wiki/Aluminium%20granules | Aluminium granules are fine spherical aggregates of aluminium.
Manufacture
Aluminium granules are manufactured by the melting of primary or secondary aluminium and blown in air or vacuum, or are cast in sand and then sieved off. Other methods include casting of molten aluminium in water.
Granules versus powders
Alum... | Aluminium granules | [
"Chemistry",
"Materials_science"
] | 134 | [
"Deoxidizers",
"Alloys",
"Metallurgy",
"Aluminium alloys"
] |
39,040,085 | https://en.wikipedia.org/wiki/Jessiko | Jessiko is a long autonomous robot fish developed by French start-up Robotswim, located in Palaiseau, Paris area.
History
Jessiko project was launched in 2005 by Christophe Tiraby, a French engineer.
In March 2009, Christophe Tiraby founded Robotswim company to industrialize and commercialize Jessiko.
In November... | Jessiko | [
"Engineering",
"Biology"
] | 248 | [
"Animals",
"Electromechanical engineering",
"Mechanical engineering by discipline",
"Robotic animals",
"Electrical engineering"
] |
39,040,452 | https://en.wikipedia.org/wiki/King%20Abdullah%20City%20for%20Atomic%20and%20Renewable%20Energy | The King Abdullah City for Atomic and Renewable Energy (K.A.C.A.R.E.) is a scientific research and governmental entity in the Kingdom of Saudi Arabia and is chaired by the Minister of Energy. K.A.C.A.R.E. was founded in 2010 with a mandate to develop nuclear and renewable energy in Saudi Arabia. It is headquartered in ... | King Abdullah City for Atomic and Renewable Energy | [
"Engineering"
] | 1,229 | [
"Renewable energy organizations",
"Energy organizations"
] |
31,947,931 | https://en.wikipedia.org/wiki/Problem%20book | Problem books are textbooks, usually at advanced undergraduate or post-graduate level, in which the material is organized as a series of problems, each with a complete solution given. Problem books are distinct from workbooks in that the problems are designed as a primary means of teaching, not merely for practice on ... | Problem book | [
"Physics"
] | 493 | [
"Applied and interdisciplinary physics",
"Physics education"
] |
31,948,434 | https://en.wikipedia.org/wiki/Hydrogen%20ion%20cluster | A hydrogen molecular ion cluster or hydrogen cluster ion is a positively charged cluster of hydrogen molecules. The hydrogen molecular ion () and trihydrogen ion () are well defined molecular species. However hydrogen also forms singly charged clusters () with n up to 120.
Experiments
Hydrogen ion clusters can be form... | Hydrogen ion cluster | [
"Physics",
"Chemistry"
] | 715 | [
"Cations",
"Ions",
"Matter"
] |
31,950,045 | https://en.wikipedia.org/wiki/Wood%20method | The Wood method, also known as the Merchant–Rankine–Wood method, is a structural analysis method which was developed to determine estimates for the effective buckling length of a compressed member included in a building frames, both in sway and a non-sway buckling modes. It is named after R. H. Wood.
According to thi... | Wood method | [
"Engineering"
] | 182 | [
"Structural engineering",
"Structural analysis",
"Mechanical engineering",
"Aerospace engineering"
] |
31,950,365 | https://en.wikipedia.org/wiki/Circle%20packing%20in%20an%20isosceles%20right%20triangle | Circle packing in a right isosceles triangle is a packing problem where the objective is to pack unit circles into the smallest possible isosceles right triangle.
Minimum solutions (lengths shown are length of leg) are shown in the table below. Solutions to the equivalent problem of maximizing the minimum distance b... | Circle packing in an isosceles right triangle | [
"Mathematics"
] | 109 | [
"Geometry problems",
"Circle packing",
"Mathematical problems",
"Packing problems"
] |
30,960,051 | https://en.wikipedia.org/wiki/Sengkang%20Riverside%20Park | Sengkang Riverside Park is a riverine park located at Anchorvale Street and Fernvale Street abutting Sungei Punggol, Singapore. The park consist of three open-space land parcels and is also home to a constructed wetland. The Sengkang Sports Centre is located just adjacent to the riverine park, connected by a floating w... | Sengkang Riverside Park | [
"Chemistry",
"Engineering",
"Biology"
] | 561 | [
"Bioremediation",
"Constructed wetlands",
"Environmental engineering"
] |
30,962,412 | https://en.wikipedia.org/wiki/Human-transcriptome%20DataBase%20for%20Alternative%20Splicing | The Human-transcriptome DataBase for Alternative Splicing (H-DBAS) is a database of alternatively spliced human transcripts based on H-Invitational.
See also
Alternative splicing
References
External links
https://web.archive.org/web/20110208034608/http://jbirc.jbic.or.jp/h-dbas/.
Biological databases
Gene expres... | Human-transcriptome DataBase for Alternative Splicing | [
"Chemistry",
"Biology"
] | 98 | [
"Gene expression",
"Bioinformatics",
"Molecular genetics",
"Cellular processes",
"Molecular biology",
"Biochemistry",
"Biological databases"
] |
30,967,636 | https://en.wikipedia.org/wiki/Genome%20evolution | Genome evolution is the process by which a genome changes in structure (sequence) or size over time. The study of genome evolution involves multiple fields such as structural analysis of the genome, the study of genomic parasites, gene and ancient genome duplications, polyploidy, and comparative genomics. Genome evolut... | Genome evolution | [
"Chemistry",
"Biology"
] | 3,858 | [
"Evolutionary processes",
"Molecular evolution",
"Molecular biology"
] |
47,882,363 | https://en.wikipedia.org/wiki/Universal%20space | In mathematics, a universal space is a certain metric space that contains all metric spaces whose dimension is bounded by some fixed constant. A similar definition exists in topological dynamics.
Definition
Given a class of topological spaces, is universal for if each member of embeds in . Menger stated and prove... | Universal space | [
"Physics",
"Mathematics"
] | 504 | [
"Topology",
"Space",
"nan",
"Geometry",
"Spacetime",
"Topological dynamics",
"Dynamical systems"
] |
47,885,527 | https://en.wikipedia.org/wiki/HD%20137388 | HD 137388 is an orange-hued star in the southern constellation of Apus. It has the proper name Karaka, after the native New Zealand karaka tree. The name was assigned by representatives of New Zealand in the IAU's NameExoWorlds contest. The star is too faint to be visible to the naked eye, having an apparent visual mag... | HD 137388 | [
"Astronomy"
] | 463 | [
"Apus",
"Constellations"
] |
47,886,556 | https://en.wikipedia.org/wiki/Sarcodon%20pakaraimensis | Sarcodon pakaraimensis is a species of tooth fungus in the family Bankeraceae. Found in Guyana, where it grows in mixed Pakaraimaea–Dicymbe forest, it was described as new to science in 2015. It is differentiated from other Sarcodon species by its smooth to pitted, pinkish-gray cap that stains black, its hollow stipe, ... | Sarcodon pakaraimensis | [
"Biology"
] | 186 | [
"Fungi",
"Fungus species"
] |
47,887,859 | https://en.wikipedia.org/wiki/Cycle%20of%20quantification/qualification | Cycle of quantification/qualification (Cq) is a parameter used in real-time polymerase chain reaction techniques, indicating the cycle number where a PCR amplification curve meets a predefined mathematical criterion. A Cq may be used for quantification of the target sequence or to determine whether the target sequence ... | Cycle of quantification/qualification | [
"Chemistry",
"Technology",
"Biology"
] | 214 | [
"Biochemistry methods",
"Genetics techniques",
"Polymerase chain reaction",
"nan",
"Molecular biology",
"Biochemistry"
] |
47,888,776 | https://en.wikipedia.org/wiki/Advanced%20Simulation%20Library | Advanced Simulation Library (ASL) is a free and open-source hardware-accelerated multiphysics simulation platform. It enables users to write customized numerical solvers in C++ and deploy them on a variety of massively parallel architectures, ranging from inexpensive FPGAs, DSPs and GPUs up to heterogeneous clusters an... | Advanced Simulation Library | [
"Physics",
"Chemistry"
] | 688 | [
"Computational chemistry software",
"Chemistry software",
"Computational fluid dynamics",
"Computational physics",
"Computational chemistry",
"Fluid dynamics"
] |
47,889,207 | https://en.wikipedia.org/wiki/Helium-3%20surface%20spin%20echo | Helium-3 surface spin echo (HeSE) is an inelastic scattering technique in surface science that has been used to measure microscopic dynamics at well-defined surfaces in ultra-high vacuum. The information available from HeSE complements and extends that available from other inelastic scattering techniques such as neutro... | Helium-3 surface spin echo | [
"Physics",
"Chemistry",
"Materials_science"
] | 719 | [
"Condensed matter physics",
"Surface science"
] |
47,889,743 | https://en.wikipedia.org/wiki/Conductive%20elastomer | A conductive elastomer is a form of elastomer, often natural rubber or other rubber substitute, that is manufactured to conduct electricity. This is commonly accomplished by distributing carbon or other conductive particles throughout the raw material prior to setting it. Carbon black and silica are common additives to... | Conductive elastomer | [
"Physics",
"Chemistry"
] | 316 | [
"Synthetic materials",
"Composite materials",
"Elastomers",
"Materials",
"Matter"
] |
47,894,032 | https://en.wikipedia.org/wiki/Blasting%20mat | A blasting mat is a mat usually made of sliced-up rubber tires bound together with ropes, cables or chains. They are used during rock blasting to contain the blast, prevent flying rocks and suppress dust.
Use
Blasting mats are used when explosives are detonated in places such as quarries or construction sites. The ma... | Blasting mat | [
"Chemistry",
"Engineering"
] | 924 | [
"Explosion protection",
"Mining engineering",
"Mining equipment",
"Explosives engineering",
"Combustion engineering",
"Construction",
"Military engineering",
"Explosions"
] |
43,269,014 | https://en.wikipedia.org/wiki/G%C3%B6del%20logic | In mathematical logic, a Gödel logic, sometimes referred to as Dummett logic or Gödel–Dummett logic, is a member of a family of finite- or infinite-valued logics in which the sets of truth values V are closed subsets of the unit interval [0,1] containing both 0 and 1. Different such sets V in general determine differen... | Gödel logic | [
"Mathematics",
"Engineering"
] | 140 | [
"Set theory",
"Mathematical logic",
"Software engineering",
"Mathematical logic stubs",
"Formal methods"
] |
43,270,387 | https://en.wikipedia.org/wiki/Formvar | Formvar refers to any of several thermoplastic resins that are polyvinyl formals, which are polymers formed from polyvinyl alcohol and formaldehyde as copolymers with polyvinyl acetate. They are typically used as coatings, adhesives, and molding materials.
"Formvar" used to be the registered trade name of the polyvin... | Formvar | [
"Physics"
] | 397 | [
"Materials",
"Dielectrics",
"Matter"
] |
36,160,226 | https://en.wikipedia.org/wiki/Octant%20%28solid%20geometry%29 | An octant in solid geometry is one of the eight divisions of a Euclidean three-dimensional coordinate system defined by the signs of the coordinates. It is analogous to the two-dimensional quadrant and the one-dimensional ray.
The generalization of an octant is called orthant or hyperoctant.
Naming and numbering
A c... | Octant (solid geometry) | [
"Physics"
] | 338 | [
"Spacetime",
"Space",
"Euclidean solid geometry"
] |
36,160,752 | https://en.wikipedia.org/wiki/Morley%20centers | In plane geometry, the Morley centers are two special points associated with a triangle. Both of them are triangle centers. One of them called first Morley center (or simply, the Morley center ) is designated as X(356) in Clark Kimberling's Encyclopedia of Triangle Centers, while the other point called second Morley ce... | Morley centers | [
"Physics",
"Mathematics"
] | 253 | [
"Point (geometry)",
"Triangle centers",
"Points defined for a triangle",
"Geometric centers",
"Symmetry"
] |
35,098,864 | https://en.wikipedia.org/wiki/Narasimhan%E2%80%93Seshadri%20theorem | In mathematics, the Narasimhan–Seshadri theorem, proved by , says that a holomorphic vector bundle over a Riemann surface is stable if and only if it comes from an irreducible projective unitary representation of the fundamental group.
The main case to understand is that of topologically trivial bundles, i.e. those of... | Narasimhan–Seshadri theorem | [
"Mathematics"
] | 270 | [
"Mathematical analysis",
"Theorems in mathematical analysis",
"Mathematical theorems",
"Mathematical problems"
] |
35,099,255 | https://en.wikipedia.org/wiki/Fenchel%E2%80%93Moreau%20theorem | In convex analysis, the Fenchel–Moreau theorem (named after Werner Fenchel and Jean Jacques Moreau) or Fenchel biconjugation theorem (or just biconjugation theorem) is a theorem which gives necessary and sufficient conditions for a function to be equal to its biconjugate. This is in contrast to the general property th... | Fenchel–Moreau theorem | [
"Mathematics"
] | 169 | [
"Mathematical analysis",
"Theorems in mathematical analysis",
"Mathematical theorems",
"Mathematical problems"
] |
35,100,531 | https://en.wikipedia.org/wiki/Virtual%20Cell | Virtual Cell (VCell) is an open-source software platform for modeling and simulation of living organisms, primarily cells. It has been designed to be a tool for a wide range of scientists, from experimental cell biologists to theoretical biophysicists.
Concept
Virtual Cell is an advanced software platform for modelin... | Virtual Cell | [
"Mathematics",
"Biology"
] | 1,162 | [
"Mathematical and theoretical biology",
"Applied mathematics",
"Mathematical software",
"Numerical software",
"Systems biology"
] |
35,102,687 | https://en.wikipedia.org/wiki/Metasymplectic%20space | In mathematics, a metasymplectic space, introduced by and , is a Tits building of type F4 (a specific generalized incidence structure).
The four types of vertices are called points, lines, planes, and symplecta.
References
Incidence geometry | Metasymplectic space | [
"Mathematics"
] | 53 | [
"Incidence geometry",
"Combinatorics"
] |
35,109,206 | https://en.wikipedia.org/wiki/Plastoglobulin | Plastoglobulins is a family of proteins prominent found in lipid globules in plastids of flowering plants. It shows sequence similarities to the PAP/fibrillin family. PGL and similar proteins can be found in most algae, cyanobacteria and plants, but no other life forms; it suggests a role for PGL in oxygenic photosynth... | Plastoglobulin | [
"Chemistry"
] | 397 | [
"Biochemistry stubs",
"Protein stubs"
] |
35,109,416 | https://en.wikipedia.org/wiki/Eady%20model | The Eady model is an atmospheric model for baroclinic instability first posed by British meteorologist Eric Eady in 1949 based on his PhD work at Imperial College London.
Assumptions
The Eady model makes several assumptions about the state of the atmosphere. First, the model assumes the atmosphere is composed of flui... | Eady model | [
"Chemistry"
] | 798 | [
"Atmospheric dynamics",
"Fluid dynamic instabilities",
"Fluid dynamics"
] |
35,112,066 | https://en.wikipedia.org/wiki/Equivariant%20index%20theorem | In differential geometry, the equivariant index theorem, of which there are several variants, computes the (graded) trace of an element of a compact Lie group acting in given setting in terms of the integral over the fixed points of the element. If the element is neutral, then the theorem reduces to the usual index the... | Equivariant index theorem | [
"Mathematics"
] | 257 | [
"Theorems in differential geometry",
"Theorems in geometry"
] |
28,162,705 | https://en.wikipedia.org/wiki/Acorn%20tube | An acorn tube, or acorn valve, refers to any member of a family of VHF/UHF vacuum tubes starting just before World War II. They were named after their resemblance to the acorn, specifically due to the glass cap at one end of the tube that looked similar to the cap on an acorn. The acorn tubes found widespread use in ra... | Acorn tube | [
"Physics"
] | 731 | [
"Vacuum tubes",
"Vacuum",
"Matter"
] |
28,167,194 | https://en.wikipedia.org/wiki/Value-driven%20maintenance | Value-driven maintenance (VDM) is a maintenance management methodology.
History
VDM was developed by Mark Haarman and Guy Delahay, both former chairmen of the Dutch Maintenance Association (NVDO) in their book entitled Value Driven Maintenance, New Faith in Maintenance published by Mainnovation in 2004.
Value driver... | Value-driven maintenance | [
"Engineering"
] | 1,538 | [
"Maintenance",
"Mechanical engineering"
] |
28,168,060 | https://en.wikipedia.org/wiki/Cargo%20control%20room | The cargo control room, CCR, or cargo office of a tankship is where the person in charge (PIC) can monitor and control the loading and unloading of the ship's liquid cargo. Prevalent on automated vessels, the CCR may be in its own room, or located on the ship's bridge. Among other things, the equipment in the CCR may... | Cargo control room | [
"Chemistry",
"Engineering"
] | 662 | [
"Petroleum engineering",
"Petroleum technology"
] |
29,545,659 | https://en.wikipedia.org/wiki/Bell%E2%80%93Evans%E2%80%93Polanyi%20principle | In physical chemistry, the Evans–Polanyi principle (also referred to as the Bell–Evans–Polanyi principle, Brønsted–Evans–Polanyi principle, or Evans–Polanyi–Semenov principle) observes that the difference in activation energy between two reactions of the same family is proportional to the difference of their enthalpy o... | Bell–Evans–Polanyi principle | [
"Physics",
"Chemistry",
"Mathematics"
] | 258 | [
"Thermodynamic properties",
"Thermochemistry",
"Physical quantities",
"Quantity",
"Enthalpy"
] |
29,548,278 | https://en.wikipedia.org/wiki/Minimum%20design%20metal%20temperature | MDMT is one of the design conditions for pressure vessels engineering calculations, design and manufacturing according to the ASME Boilers and Pressure Vessels Code. Each pressure vessel that conforms to the ASME code has its own MDMT, and this temperature is stamped on the vessel nameplate. The precise definition can ... | Minimum design metal temperature | [
"Physics",
"Chemistry",
"Engineering"
] | 316 | [
"Structural engineering",
"Physical phenomena",
"Phase transitions",
"Chemical equipment",
"Threshold temperatures",
"Physical systems",
"Hydraulics",
"Mechanical engineering",
"Mechanical engineering stubs",
"Pressure vessels"
] |
45,004,055 | https://en.wikipedia.org/wiki/Empirical%20valence%20bond | In theoretical chemistry, the Empirical Valence Bond (EVB) approach is an approximation for calculating free-energies of a chemical reaction in condensed-phase. It was first developed by Israeli chemist Arieh Warshel, and was inspired by the way Marcus theory uses potential surfaces to calculate the probability of elec... | Empirical valence bond | [
"Physics",
"Chemistry"
] | 364 | [
"Reaction mechanisms",
"Applied and interdisciplinary physics",
"Physical organic chemistry",
"nan",
"Chemical kinetics",
"Physical chemistry",
"Physical chemistry stubs"
] |
45,004,618 | https://en.wikipedia.org/wiki/Hydrodenitrogenation | Hydrodenitrogenation (HDN) is an industrial process for the removal of nitrogen from petroleum. Organonitrogen compounds, even though they occur at low levels, are undesirable because they cause poisoning of downstream catalysts. Furthermore, upon combustion, organonitrogen compounds generate NOx, a pollutant. HDN i... | Hydrodenitrogenation | [
"Chemistry"
] | 327 | [
"Petroleum technology",
"Chemical processes",
"Natural gas technology",
"Oil refining",
"nan",
"Chemical process engineering"
] |
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