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Signs Of LIfe Detector ( SOLID ) is an analytical instrument under development to detect extraterrestrial life in the form of organic biosignatures obtained from a core drill during planetary exploration.
The instrument is based on fluorescent immunoassays and it is being developed by the Spanish Astrobiology Center (... | https://en.wikipedia.org/wiki/Signs_Of_LIfe_Detector |
Sigrid Doris Peyerimhoff (born 12 January 1937, in Rottweil ) is a theoretical chemist and Emeritus Professor at the Institute of Physical and Theoretical Chemistry, University of Bonn , Germany .
1988 Gottfried Wilhelm Leibniz-Prize
1994 Cross of Merit of the Federal Republic of Germany
2007 Cothenius-Medaille of t... | https://en.wikipedia.org/wiki/Sigrid_D._Peyerimhoff |
Sybren Otto (Groningen, 3 August 1971) is Professor of Systems chemistry at the Stratingh Institute for Chemistry , University of Groningen .
Otto studied chemistry at the University of Groningen and in 1994, he received his Master's degree , focusing on physical organic chemistry and biochemistry , with the distincti... | https://en.wikipedia.org/wiki/Sijbren_Otto |
Sikta Irrigation Project is one of the National Pride Projects of Nepal. [ 1 ] The intake is in the Rapti river in western Nepal . There are two canals with the capacity of 50 m3/s each. The length of canal is 45.25 kilometres in the western section and 53 kilometres in the eastern section. The canals are constituted i... | https://en.wikipedia.org/wiki/Sikta_Irrigation_Project |
Silane ( Silicane ) is an inorganic compound with chemical formula SiH 4 . It is a colorless, pyrophoric gas with a sharp, repulsive, pungent smell, somewhat similar to that of acetic acid . [ 6 ] Silane is of practical interest as a precursor to elemental silicon . Silanes with alkyl groups are effective water repelle... | https://en.wikipedia.org/wiki/Silane |
Silanization of silicon and mica is the coating of these materials with a thin layer of self assembling units.
Nanoscale analysis of proteins using atomic force microscopy (AFM) requires surfaces with well-defined topologies and chemistries for many experimental techniques. Biomolecules, particularly proteins, can be ... | https://en.wikipedia.org/wiki/Silanization_of_silicon_and_mica |
Silence compression is an audio processing technique used to effectively encode silent intervals, reducing the amount of storage or bandwidth needed to transmit audio recordings.
Silence can be defined as audio segments with negligible sound. Examples of silence are pauses between words or sentences in speech and paus... | https://en.wikipedia.org/wiki/Silence_compression |
In genetics , a silencer is a DNA sequence capable of binding transcription regulation factors , called repressors . DNA contains genes and provides the template to produce messenger RNA (mRNA). That mRNA is then translated into proteins. When a repressor protein binds to the silencer region of DNA, RNA polymerase is ... | https://en.wikipedia.org/wiki/Silencer_(genetics) |
Silent mode is a setting available on mobile phones and pagers that, when activated, disables the ringtones and, in some cases, also the vibrating alerts or alarm . Unlike the airplane mode , the silent mode still allows the device to receive and send calls and messages. This quiet option may be useful in meetings, spe... | https://en.wikipedia.org/wiki/Silent_mode |
The Silesia corpus is a collection of files intended for use as a benchmark for testing lossless data compression algorithms. It was created in 2003 as an alternative for the Canterbury corpus and Calgary corpus , based on concerns about how well these represented modern files. It contains various data types, including... | https://en.wikipedia.org/wiki/Silesia_corpus |
Silicalite is an inorganic compound with the formula SiO 2 . It is one of several forms ( polymorphs ) of silicon dioxide . It is a white solid. It consists of tetrahedral silicon centers and two-coordinate oxides. It is prepared by hydrothermal reaction using tetrapropylammonium hydroxide followed by calcining to r... | https://en.wikipedia.org/wiki/Silicalite |
Silicate mineral paints or mineral colors are paint coats with mineral binding agents. Two relevant mineral binders play a role in the field of colors: Lime , and silicate .
Under the influence of carbon dioxide, lime-based binders carbonate and water silicate-based binders solidify. Together they form calcium silicat... | https://en.wikipedia.org/wiki/Silicate_mineral_paint |
In geology, silicification is a process in which silica -rich fluids seep into the voids of Earth materials , e.g., rocks, wood, bones, shells, and replace the original materials with silica (SiO 2 ). Silica is a naturally existing and abundant compound found in organic and inorganic materials, including Earth's crust ... | https://en.wikipedia.org/wiki/Silicification |
The silicon-vacancy center (Si-V) is an optically active defect in diamond (referred to as a color center) that is receiving an increasing amount of interest in the diamond research community. This interest is driven primarily by the coherent optical properties of the Si-V, especially compared to the well-known and ext... | https://en.wikipedia.org/wiki/Silicon-vacancy_center_in_diamond |
The Silicon Disk System was the first commercially available RAM disk for microcomputers . [ 1 ]
It was written by Jerry Karlin in 1979/80. Karlin was joined by Peter Cheesewright, and their company Microcosm Research Ltd. marketed the product for a number of years. The product was available as a standalone and also b... | https://en.wikipedia.org/wiki/Silicon_Disk_System |
Silicon Milkroundabout is a series of job fairs held in London, England [ 1 ] and Edinburgh, Scotland [ 2 ] for the UK tech start-up community. [ 3 ] The event's name is a portmanteau of Silicon Roundabout and the Milk round university recruiting events.
The company was founded by Cristiana Camisotti, Ian Hogarth , an... | https://en.wikipedia.org/wiki/Silicon_Milkroundabout |
Silicon carbide color centers are point defects in the crystal lattice of silicon carbide , which are known as color centers. These color centers have multiple uses, some of which are in photonics, semiconductors, and quantum applications like metrology and quantum communication . Defects in materials have a plethora o... | https://en.wikipedia.org/wiki/Silicon_carbide_color_centers |
A silicon compiler is an electronic design automation software tool that is used for high-level synthesis of integrated circuits. Such a tool takes a user's specification of an IC design as input and automatically generates an integrated circuit (IC) design files as output for further fabrication by the semiconductor f... | https://en.wikipedia.org/wiki/Silicon_compiler |
Silicon isotope biogeochemistry is the study of environmental processes using the relative abundance of Si isotopes . As the relative abundance of Si stable isotopes varies among different natural materials, [ 2 ] the differences in abundance can be used to trace the source of Si, and to study biological, geological, a... | https://en.wikipedia.org/wiki/Silicon_isotope_biogeochemistry |
Silicon nanowires , also referred to as SiNWs , are a type of semiconductor nanowire most often formed from a silicon precursor by etching of a solid or through catalyzed growth from a vapor or liquid phase. Such nanowires have promising applications in lithium-ion batteries, thermoelectrics and sensors . Initial synth... | https://en.wikipedia.org/wiki/Silicon_nanowire |
In semiconductor manufacturing , silicon on insulator ( SOI ) technology is fabrication of silicon semiconductor devices in a layered silicon–insulator–silicon substrate , to reduce parasitic capacitance within the device, thereby improving performance. [ 1 ] SOI-based devices differ from conventional silicon-built dev... | https://en.wikipedia.org/wiki/Silicon_on_insulator |
Silicone hydrophobic powder, generally abbreviated as SHP, is a versatile chemical additive known for its remarkable water-repellent properties. It is a fine, white powder composed of silicone polymer, a synthetic polymer known for its unique combination of flexibility, stability, and resistance to various environmenta... | https://en.wikipedia.org/wiki/Silicon_organic_water_repellent |
Silicon tetraazide is a thermally unstable binary compound of silicon and nitrogen with a nitrogen content of 85.7% (by molar mass ). This high-energy compound combusts spontaneously and can only be studied in a solution. [ 1 ] [ 2 ] [ 3 ] A further coordination to a six-fold coordinated structure such as a hexaazidosi... | https://en.wikipedia.org/wiki/Silicon_tetraazide |
This page provides supplementary chemical data on silicon tetrachloride .
The handling of this chemical may incur notable safety precautions. It is highly recommend that you seek the Material Safety Datasheet ( MSDS ) for this chemical from a reliable source, it this case, noting that one should "avoid all contact! In... | https://en.wikipedia.org/wiki/Silicon_tetrachloride_(data_page) |
Silicone foam is a synthetic rubber product used in gasketing , sheets and firestops . It is available in solid, cured form as well as in individual liquid components for field installations. [ 1 ]
When the constituent components of silicone foam are mixed together, they evolve hydrogen gas, which causes bubbles to fo... | https://en.wikipedia.org/wiki/Silicone_foam |
Silicone quaternary amine is a polymeric chemical antimicrobial agent [ 1 ] used in some odor-repellent socks , including Burlington Bioguard Socks. [ 2 ]
This article about polymer science is a stub . You can help Wikipedia by expanding it . | https://en.wikipedia.org/wiki/Silicone_quaternary_amine |
A silicon–oxygen bond ( Si−O bond ) is a chemical bond between silicon and oxygen atoms that can be found in many inorganic and organic compounds . [ 1 ] In a silicon–oxygen bond, electrons are shared unequally between the two atoms , with oxygen taking the larger share due to its greater electronegativity . This polar... | https://en.wikipedia.org/wiki/Silicon–oxygen_bond |
Silicothermic reactions are thermic chemical reactions using silicon as the reducing agent at high temperature (800-1400°C).
They were initially commercialized for the production of low-carbon ferromanganese before and during World War I ( F. M. Becket played a significant role) and are still used today. They were als... | https://en.wikipedia.org/wiki/Silicothermic_reaction |
Silk surfacing was a surface finishing of cotton to obtain an appearance similar to silk.
In contrast to other imitative finishes such as mercerizing , In Silk surfacing, real silk was used in this treatment. Cotton was treated with acid and then silk waste (mixed) solution cotton to provide a lustrous appearance. [ 1... | https://en.wikipedia.org/wiki/Silk_surfacing |
A sill plate or sole plate in construction and architecture is the bottom horizontal member of a wall or building to which vertical members are attached. The word "plate" is typically omitted in America and carpenters speak simply of the "sill". Other names are rat sill , ground plate , ground sill , groundsel , night ... | https://en.wikipedia.org/wiki/Sill_plate |
Silly Putty is a toy containing silicone polymers that have unusual physical properties. It can flow like a liquid, bounce and can be stretched or broken depending on the amount of physical stress to which it is subjected. It contains viscoelastic liquid silicones, a type of non-Newtonian fluid , which makes it act as ... | https://en.wikipedia.org/wiki/Silly_Putty |
Silopi Asphaltite Mine is an asphaltite mine located in Şırnak Province in Turkey [ 1 ] which supplies fuel for Şırnak Silopi power station . [ 2 ] | https://en.wikipedia.org/wiki/Silopi_asphaltite_mine |
The Silsbee effect or Silsbee current refers to the effect by which, if the electric current through a superconductor exceeds a critical level, the superconducting state will be destroyed. [ 1 ] The size of the critical current (which can be as large as 100 amperes in a 1-mm wire) depends on the nature and geometry of ... | https://en.wikipedia.org/wiki/Silsbee_effect |
The silt density index is a measure for the fouling capacity of water in reverse osmosis systems. The test measures the rate at which a 0.45- micrometre filter is plugged when subjected to a constant water pressure of 206.8 kPa (30 psi). The SDI gives the percent drop per minute in the flow rate of the water through th... | https://en.wikipedia.org/wiki/Silt_density_index |
A silt fence , sometimes (misleadingly) called a filter fence , [ 1 ] is a temporary sediment control device used on construction sites to protect water quality in nearby streams, rivers, lakes and seas from sediment (loose soil ) in stormwater runoff . Silt fences are widely used on construction sites in North America... | https://en.wikipedia.org/wiki/Silt_fence |
Siltation is water pollution caused by particulate terrestrial clastic material, with a particle size dominated by silt or clay . It refers both to the increased concentration of suspended sediments and to the increased accumulation (temporary or permanent) of fine sediments on bottoms where they are undesirable. Silta... | https://en.wikipedia.org/wiki/Siltation |
The Silurian hypothesis is a thought experiment , [ 1 ] which assesses modern science's ability to detect evidence of a prior advanced civilization, perhaps several million years ago. The most probable clues for such a civilization could be carbon , radioactive elements or temperature variation. The name "Silurian" der... | https://en.wikipedia.org/wiki/Silurian_hypothesis |
Silvana Konermann (born May 18, 1988) is a Swiss-American bioengineer and neuroscientist whose research focuses on CRISPR , genome engineering , transcription and epigenetics , and Alzheimer's disease . She is an assistant professor of biochemistry at Stanford University and co-founder and executive director of Arc Ins... | https://en.wikipedia.org/wiki/Silvana_Konermann |
The Silver Branch or Silver Bough ( Irish : An Craobh Airgid ) is a symbol found in Irish mythology and literature.
Featured in the Irish poem The Voyage of Bran and the narrative Cormac's Adventure in the Land of Promise , it represents entry into the Celtic Otherworld or Tír na nÓg .
In Imram Brain ("Voyage of Bran... | https://en.wikipedia.org/wiki/Silver_Branch |
The Silver Medal of the Zoological Society of London is "Awarded to a Fellow of the Society or any other person for contributions to the understanding and appreciation of zoology, including such activities as public education in natural history, and wildlife conservation." [ 1 ] It was first awarded in 1847. [ 2 ]
In ... | https://en.wikipedia.org/wiki/Silver_Medal_(Zoological_Society_of_London) |
The Silver Sparrow computer virus is malware that runs on x86 - and Apple M1 -based Macintosh computers. [ 1 ] [ 2 ] Engineers at the cyber security firm Red Canary have detected two versions of the malware in January and February 2021. [ 3 ]
Two versions of the malware were reported. The first version (described as t... | https://en.wikipedia.org/wiki/Silver_Sparrow_(malware) |
Silver Spring Networks , headquartered in San Jose, California , was a provider of smart grid products, with offices in Australia, Singapore, Brazil, and the United Kingdom. In January 2018, the company was acquired by Itron for $830 million and was renamed Itron Networked Solutions. [ 2 ] [ 3 ] [ 4 ]
Besides communic... | https://en.wikipedia.org/wiki/Silver_Spring_Networks |
Silver acetylide is an inorganic chemical compound with the formula Ag 2 C 2 , a metal acetylide . The compound can be regarded as a silver salt of the weak acid , acetylene . The salt's anion consists of two carbon atoms linked by a triple bond , thus, its structure is [Ag + ] 2 [ − C≡C − ] . The alternate name "silve... | https://en.wikipedia.org/wiki/Silver_acetylide |
Silver azide is the chemical compound with the formula AgN 3 . It is a silver (I) salt of hydrazoic acid . It forms a colorless crystals. Like most azides, it is a primary explosive .
Silver azide can be prepared by treating an aqueous solution of silver nitrate with sodium azide . [ 2 ] The silver azide precipitates ... | https://en.wikipedia.org/wiki/Silver_azide |
Silver bromate is an inorganic compound with the molecular formula AgBrO 3 . It is a white powder that is toxic and is both light and heat-sensitive. [ 2 ]
Silver bromate can be used as an oxidant for the transformation of tetrahydropyranyl ethers to carbonyl compounds . [ 3 ]
This inorganic compound –related article... | https://en.wikipedia.org/wiki/Silver_bromate |
Silver bromide (AgBr), a soft, pale-yellow, water-insoluble salt well known (along with other silver halides) for its unusual sensitivity to light . This property has allowed silver halides to become the basis of modern photographic materials. [ 2 ] AgBr is widely used in photographic films and is believed by some to h... | https://en.wikipedia.org/wiki/Silver_bromide |
Silver chlorate is an inorganic compound with molecular formula AgClO 3 . It forms white tetragonal crystals. [ 1 ] [ 2 ] Like all chlorates, it is water-soluble and an oxidizing agent. As a simple metal salt, it is a common chemical in basic inorganic chemistry experiments. It is light-sensitive, so it must be stored ... | https://en.wikipedia.org/wiki/Silver_chlorate |
Silver chromate is an inorganic compound with formula Ag 2 CrO 4 which appears as distinctively coloured brown-red crystals. The compound is insoluble and its precipitation is indicative of the reaction between soluble chromate and silver precursor salts (commonly potassium / sodium chromate with silver nitrate ). [ 5 ... | https://en.wikipedia.org/wiki/Silver_chromate |
Silver dichromate is a chemical compound with the formula Ag 2 Cr 2 O 7 . It is insoluble in water and decomposes when treated with hot water. Its anion has a charge of -2.
Related complexes are used as oxidants in organic chemistry . [ 1 ] For instance, tetrakis(pyridine)silver dichromate, [Ag 2 (py) 4 ] 2+ [Cr 2 O 7... | https://en.wikipedia.org/wiki/Silver_dichromate |
Silver economy is the system of production , distribution and consumption of goods and services aimed at using the purchasing potential of older and ageing people and satisfying their consumption, living and health needs. The silver economy is analyzed in the field of social gerontology not as an existing economic syst... | https://en.wikipedia.org/wiki/Silver_economy |
Silver iodate (AgIO 3 ) is a light-sensitive, white crystal composed of silver , iodine and oxygen . Unlike most metal iodates, it is practically insoluble in water.
Silver iodate can be obtained by reacting silver nitrate (AgNO 3 ) with sodium iodate or potassium iodate. The by-product of the reaction is sodium nitra... | https://en.wikipedia.org/wiki/Silver_iodate |
Silver iodide is an inorganic compound with the formula Ag I . The compound is a bright yellow solid, but samples almost always contain impurities of metallic silver that give a grey colouration. The silver contamination arises because some samples of AgI can be highly photosensitive . This property is exploited in ... | https://en.wikipedia.org/wiki/Silver_iodide |
Silver nitrate is an inorganic compound with chemical formula AgNO 3 . It is a versatile precursor to many other silver compounds, such as those used in photography . It is far less sensitive to light than the halides . [ citation needed ] It was once called lunar caustic because silver was called luna by ancient alche... | https://en.wikipedia.org/wiki/Silver_nitrate |
Silver nitride is an explosive chemical compound with symbol Ag 3 N. It is a black, metallic-looking [ 3 ] solid which is formed when silver oxide or silver nitrate [ 4 ] is dissolved in concentrated solutions of ammonia , causing formation of the diammine silver complex which subsequently breaks down to Ag 3 N. The st... | https://en.wikipedia.org/wiki/Silver_nitride |
Silver overlay is an electroplated coating of silver on a non-conductive surface such as porcelain or glass . Most techniques used to create silver overlay involve the use of special flux which contains silver and turpentine oil . This is then painted on the glass ornament as a design. After the painting is complete, t... | https://en.wikipedia.org/wiki/Silver_overlay |
Silver perchlorate is the chemical compound with the formula AgClO 4 . This white solid forms a monohydrate and is mildly deliquescent . It is a useful source of the Ag + ion, although the presence of perchlorate presents risks. It is used as a catalyst in organic chemistry.
Silver perchlorate is created by heating ... | https://en.wikipedia.org/wiki/Silver_perchlorate |
In mathematics, the silver ratio is a geometrical proportion close to 70/29 . Its exact value is 1 + √2, the positive solution of the equation x 2 = 2 x + 1.
The name silver ratio results from analogy with the golden ratio , the positive solution of the equation x 2 = x + 1.
Although its name is recent, the silver r... | https://en.wikipedia.org/wiki/Silver_ratio |
In pathology , silver staining is the use of silver to selectively alter the appearance of a target in microscopy of histological sections ; in temperature gradient gel electrophoresis ; and in polyacrylamide gels .
In traditional stained glass , silver stain is a technique to produce yellow to orange or brown shades ... | https://en.wikipedia.org/wiki/Silver_staining |
Silver standards refer to the standards of millesimal fineness for the silver alloy used in the manufacture or crafting of silver objects. This list is organized from highest to lowest millesimal fineness, or purity of the silver. | https://en.wikipedia.org/wiki/Silver_standards |
Silver telluride (Ag 2 Te) is a chemical compound, a telluride of silver , also known as disilver telluride or silver(I) telluride. It forms a monoclinic crystal. In a wider sense, silver telluride can be used to denote AgTe (silver(II) telluride, a metastable compound) or Ag 5 Te 3 .
Silver(I) telluride occurs natura... | https://en.wikipedia.org/wiki/Silver_telluride |
Silver tetrafluoroborate is an inorganic compound with the molecular formula AgBF 4 . It is a white solid, although commercial samples often are gray, that dissolves in polar organic solvents as well as water. [ 2 ]
Silver tetrafluoroborate can be prepared by several methods. A simple route entails dissolving silver c... | https://en.wikipedia.org/wiki/Silver_tetrafluoroborate |
Silvering is the chemical process of coating a non-conductive substrate such as glass with a reflective substance, to produce a mirror . While the metal is often silver , the term is used for the application of any reflective metal.
Most common household mirrors are "back-silvered" or "second-surface", meaning that t... | https://en.wikipedia.org/wiki/Silvering |
In mathematics , the Silverman–Toeplitz theorem , first proved by Otto Toeplitz , is a result in series summability theory characterizing matrix summability methods that are regular. A regular matrix summability method is a linear sequence transformation that preserves the limits of convergent sequences . [ 1 ] The lin... | https://en.wikipedia.org/wiki/Silverman–Toeplitz_theorem |
Silverquant is a labeling and detection method for DNA microarrays or protein microarrays. A synonym is colorimetric detection. In contrast to the classical signal detection on microarrays by using fluorescence , the colorimetric detection is more sensitive and ozone-stable.
The probe to be detected is labeled with so... | https://en.wikipedia.org/wiki/Silverquant |
Silvilization is a conceptual framework or a vision of the world whereby the forest, a metaphor for primordial living, is the best place for human development and fulfilment. [ 1 ] [ 2 ] It is a portmanteau of the Latin word silva , meaning forest, and civilization . [ 1 ]
The term was first coined by Pierre-Doris Mal... | https://en.wikipedia.org/wiki/Silvilization |
In organosilicon chemistry , silyl enol ethers are a class of organic compounds that share the common functional group R 3 Si−O−CR=CR 2 , composed of an enolate ( R 3 C−O−R ) bonded to a silane ( SiR 4 ) through its oxygen end and an ethene group ( R 2 C=CR 2 ) as its carbon end. They are important intermediates in org... | https://en.wikipedia.org/wiki/Silyl_enol_ether |
Silyl ethers are a group of chemical compounds which contain a silicon atom covalently bonded to an alkoxy group. The general structure is R 1 R 2 R 3 Si−O−R 4 where R 4 is an alkyl group or an aryl group. Silyl ethers are usually used as protecting groups for alcohols in organic synthesis . Since R 1 R 2 R 3 can be co... | https://en.wikipedia.org/wiki/Silyl_ether |
Silylation is the introduction of one or more (usually) substituted silyl groups (R 3 Si) to a molecule. Silylations are core methods for production of organosilicon chemistry . Silanization , while similar to silylation, usually refers to attachment of silyl groups to solids. [ 1 ] Silyl groups are commonly used for: ... | https://en.wikipedia.org/wiki/Silylation |
Silylene is a chemical compound with the formula SiR 2 . It is the silicon analog of carbene . Silylene rapidly when condensed.
Silylenes are formal derivatives of silylene with its hydrogens replaced by other substituents. [ 2 ] Most examples feature amido (NR 2 ) or alkyl/aryl groups. [ 3 ] [ 4 ]
Silylenes have be... | https://en.wikipedia.org/wiki/Silylene |
SimThyr is a free continuous dynamic simulation program for the pituitary-thyroid feedback control system. [ 1 ] The open-source program is based on a nonlinear model of thyroid homeostasis. [ 2 ] [ 3 ] [ 4 ] In addition to simulations in the time domain the software supports various methods of sensitivity analysis . I... | https://en.wikipedia.org/wiki/SimThyr |
Sim is a two-player paper-and-pencil game .
Six dots ( vertices ) are drawn. Each dot is connected to every other dot by a line ( edge ).
Two players take turns coloring any uncolored lines. One player colors in one color, and the other colors in another color, with each player trying to avoid the creation of a tri... | https://en.wikipedia.org/wiki/Sim_(game) |
Sim Scanner is a feature of the Olympus FluoView FV1000 confocal laser scanning microscope . The system incorporates two laser scanners, one for confocal imaging and the other for simultaneous stimulation. They can be illuminated separately and independently, making it possible to stimulate the specimen during observat... | https://en.wikipedia.org/wiki/Sim_scanner |
SIMATIC is a series of programmable logic controller and automation systems, developed by Siemens . Introduced in 1958, the series has gone through four major generations, the latest being the SIMATIC S7 generation. The series is intended for industrial automation and production.
The name SIMATIC is a registered trade... | https://en.wikipedia.org/wiki/Simatic |
SimBioSys (short for Simulated Biological Systems) is a technology company deploying a combination of artificial intelligence and biophysical simulations to improve the personalized and patient-specific understanding of cancer.
SimBioSys developed a simulation engine, TumorScope, [ 1 ] which utilizes current standard... | https://en.wikipedia.org/wiki/Simbiosys |
Simeon Chituru Achinewhu (born 15 August, 1946) [ 1 ] [ 2 ] is a Nigerian food and nutrition biochemist, scholar and university administrator who served as the past president-general of Ogbakor Ikwerre Socio-cultural Organisation Worldwide. [ 3 ] He was vice–chancellor of River State University (formerly Rivers State U... | https://en.wikipedia.org/wiki/Simeon_Chituru_Achinewhu |
In Euclidean geometry , two objects are similar if they have the same shape , or if one has the same shape as the mirror image of the other. More precisely, one can be obtained from the other by uniformly scaling (enlarging or reducing), possibly with additional translation , rotation and reflection . This means that e... | https://en.wikipedia.org/wiki/Similarity_(geometry) |
The similarity heuristic is a psychological heuristic pertaining to how people make judgments based on similarity . More specifically, the similarity heuristic is used to account for how people make judgments based on the similarity between current situations and other situations or prototypes of those situations.
At ... | https://en.wikipedia.org/wiki/Similarity_heuristic |
A similarity system of triangles is a specific configuration involving a set of triangles. [ 1 ] A set of triangles is considered a configuration when all of the triangles share a minimum of one incidence relation with one of the other triangles present in the set. [ 1 ] An incidence relation between triangles refers t... | https://en.wikipedia.org/wiki/Similarity_system_of_triangles |
Simjacker is a cellular software exploit for SIM cards discovered by AdaptiveMobile Security . [ 1 ] 29 countries are vulnerable according to ZDNet . [ 2 ] The vulnerability has been exploited primarily in Mexico, but also Colombia and Peru, according to the Wall Street Journal , [ 3 ] where it was used to track the lo... | https://en.wikipedia.org/wiki/Simjacker |
The Simmons–Smith reaction is an organic cheletropic reaction involving an organozinc carbenoid that reacts with an alkene (or alkyne ) to form a cyclopropane . [ 1 ] [ 2 ] [ 3 ] It is named after Howard Ensign Simmons, Jr. and Ronald D. Smith . It uses a methylene free radical intermediate that is delivered to both ca... | https://en.wikipedia.org/wiki/Simmons–Smith_reaction |
Simon's reagent is used as a simple spot-test to presumptively identify alkaloids as well as other compounds. It reacts with secondary amines like MDMA and methamphetamine to give a blue solution.
The primary use of this reagent is for detecting secondary amines, such as MDMA and methamphetamine , and is typically use... | https://en.wikipedia.org/wiki/Simon's_reagent |
Simon Cornelis Johannes Olivier (Amsterdam, June 13, 1879 – Wageningen, August 9, 1961) [ 1 ] was a Dutch chemist. [ 2 ] He was professor at the Wageningen Agricultural College (predecessor of what is currently Wageningen University [ 3 ] ) from 1919 to 1949. During the Second World War he was imprisoned for almost two... | https://en.wikipedia.org/wiki/Simon_Olivier |
In mathematics, the Simon problems (or Simon's problems ) are a series of fifteen questions posed in the year 2000 by Barry Simon , an American mathematical physicist. [ 1 ] [ 2 ] Inspired by other collections of mathematical problems and open conjectures, such as the famous list by David Hilbert , the Simon problems c... | https://en.wikipedia.org/wiki/Simon_problems |
Simonellite (1,1-dimethyl-1,2,3,4-tetrahydro-7-isopropyl phenanthrene) is a polycyclic aromatic hydrocarbon with a chemical formula C 19 H 24 . It is similar to retene .
Simonellite occurs naturally as an organic mineral derived from diterpenes present in conifer resins . [ 1 ] It is named after its discoverer, Vittor... | https://en.wikipedia.org/wiki/Simonellite |
In geometry and geometric measure theory , the Simons cone refers to a specific minimal hypersurface in R 8 {\displaystyle \mathbb {R} ^{8}} that plays a crucial role in resolving Bernstein's problem in higher dimensions. It is named after American mathematician Jim Simons .
The Simons cone is defined as the hypersurf... | https://en.wikipedia.org/wiki/Simons_cone |
The Simon–Glatzel equation [ 1 ] is an empirical correlation describing the pressure dependence of the melting temperature of a solid . The pressure dependence of the melting temperature is small for small pressure changes because the volume change during fusion or melting is rather small. However, at very high pressur... | https://en.wikipedia.org/wiki/Simon–Glatzel_equation |
In mathematics , the term simple is used to describe an algebraic structure which in some sense cannot be divided by a smaller structure of the same type. Put another way, an algebraic structure is simple if the kernel of every homomorphism is either the whole structure or a single element. Some examples are:
The gene... | https://en.wikipedia.org/wiki/Simple_(abstract_algebra) |
Simple Modular Architecture Research Tool ( SMART ) is a biological database that is used in the identification and analysis of protein domains within protein sequences. [ 1 ] [ 2 ] SMART uses profile-hidden Markov models built from multiple sequence alignments to detect protein domains in protein sequences. The most r... | https://en.wikipedia.org/wiki/Simple_Modular_Architecture_Research_Tool |
A simple or regular continued fraction is a continued fraction with numerators all equal one, and denominators built from a sequence { a i } {\displaystyle \{a_{i}\}} of integer numbers. The sequence can be finite or infinite, resulting in a finite (or terminated ) continued fraction like
or an infinite continued frac... | https://en.wikipedia.org/wiki/Simple_continued_fraction |
A simple lipid is a fatty acid ester of different alcohols and carries no other substance. These lipids belong to a heterogeneous class of predominantly nonpolar compounds, mostly insoluble in water , but soluble in nonpolar organic solvents such as chloroform and benzene . [ 1 ]
"Simple lipid" can refer to many diffe... | https://en.wikipedia.org/wiki/Simple_lipid |
Simple Task-Actor Protocol (STAP) is a machine-readable format for specifying user-interface changes. STAP enables symmetric user-interface access for AI and human users.
Main focus of STAP is in providing a functionally-equivalent task experience for human and computational users alike.
In its focus to make human sof... | https://en.wikipedia.org/wiki/Simple_task-actor_protocol |
A simple wave is a flow in a region adjacent to a region of constant state. [ 1 ] In the language of Riemann invariant , the simple wave can also be defined as the zone where all but one of the Riemann invariants are constant in the region of interest, and consequently, a simple wave zone is covered by arcs of characte... | https://en.wikipedia.org/wiki/Simple_wave |
In algebra, a simplicial Lie algebra is a simplicial object in the category of Lie algebras . In particular, it is a simplicial abelian group , and thus is subject to the Dold–Kan correspondence .
This algebra -related article is a stub . You can help Wikipedia by expanding it . | https://en.wikipedia.org/wiki/Simplicial_Lie_algebra |
In physics , the term simplicial manifold commonly refers to one of several loosely defined objects, commonly appearing in the study of Regge calculus . These objects combine attributes of a simplex with those of a manifold . There is no standard usage of this term in mathematics , and so the concept can refer to a tr... | https://en.wikipedia.org/wiki/Simplicial_manifold |
In geometry and combinatorics , a simplicial (or combinatorial ) d -sphere is a simplicial complex homeomorphic to the d -dimensional sphere . Some simplicial spheres arise as the boundaries of convex polytopes , however, in higher dimensions most simplicial spheres cannot be obtained in this way.
One important open p... | https://en.wikipedia.org/wiki/Simplicial_sphere |
In graph theory , a simplicial vertex v {\displaystyle v} is a vertex whose closed neighborhood N G [ v ] {\displaystyle N_{G}[v]} in a graph G {\displaystyle G} forms a clique , where every pair of neighbors is adjacent to each other. [ 1 ]
A vertex of a graph is bisimplicial if the set of it and its neighbours is th... | https://en.wikipedia.org/wiki/Simplicial_vertex |
Simplicity is the state or quality of being simple . Something easy to understand or explain seems simple, in contrast to something complicated. Alternatively, as Herbert A. Simon suggests, something is simple or complex depending on the way we choose to describe it. [ 1 ] In some uses, the label "simplicity" can imply... | https://en.wikipedia.org/wiki/Simplicity |
The Simplified Molecular Input Line Entry System ( SMILES ) is a specification in the form of a line notation for describing the structure of chemical species using short ASCII strings . SMILES strings can be imported by most molecule editors for conversion back into two-dimensional drawings or three-dimensional models... | https://en.wikipedia.org/wiki/Simplified_Molecular_Input_Line_Entry_System |
Simplified perturbations models are a set of five mathematical models (SGP, SGP4, SDP4, SGP8 and SDP8) used to calculate orbital state vectors of satellites and space debris relative to the Earth-centered inertial coordinate system. This set of models is often referred to collectively as SGP4 due to the frequency of us... | https://en.wikipedia.org/wiki/Simplified_perturbations_models |
Simplified sewerage , also called small-bore sewerage , is a sewer system that collects all household wastewater ( blackwater and greywater ) in small-diameter pipes laid at fairly flat gradients . Simplified sewers are laid in the front yard or under the pavement (sidewalk) or - if feasible - inside the back yard, rat... | https://en.wikipedia.org/wiki/Simplified_sewerage |
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