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Shape moiré is one type of moiré patterns demonstrating the phenomenon of moiré magnification. [ 1 ] [ 2 ] 1D shape moiré is the particular simplified case of 2D shape moiré. One-dimensional patterns may appear when superimposing an opaque layer containing tiny horizontal transparent lines on top of a layer containing ... | https://en.wikipedia.org/wiki/Shape_moiré |
The shape of the atomic nucleus depends on the variety of factors related to the size and shape of its nucleon ( proton or neutron ) constituents and the nuclear force holding them together. The spatial extent of the prolate spheroid nucleon (and larger nuclides) is determined by root mean squared (RMS) charge radius ... | https://en.wikipedia.org/wiki/Shape_of_the_atomic_nucleus |
In physical cosmology , the shape of the universe refers to both its local and global geometry. Local geometry is defined primarily by its curvature , while the global geometry is characterised by its topology (which itself is constrained by curvature). General relativity explains how spatial curvature (local geometry)... | https://en.wikipedia.org/wiki/Shape_of_the_universe |
In quantum mechanics , a shape resonance is a metastable state in which an electron is trapped due to the shape of a potential barrier . [ 1 ] Altunata [ 2 ] describes a state as being a shape resonance if, "the internal state of the system remains unchanged upon disintegration of the quasi- bound level."
A more genera... | https://en.wikipedia.org/wiki/Shape_resonance |
Shape theory is a branch of topology that provides a more global view of the topological spaces than homotopy theory . The two coincide on compacta dominated homotopically by finite polyhedra . Shape theory associates with the Čech homology theory while homotopy theory associates with the singular homology theory.
Sha... | https://en.wikipedia.org/wiki/Shape_theory_(mathematics) |
A shaped charge , commonly also hollow charge if shaped with a cavity, is an explosive charge shaped to focus the effect of the explosive's energy. Different types of shaped charges are used for various purposes such as cutting and forming metal, initiating nuclear weapons , penetrating armor , or perforating wells in ... | https://en.wikipedia.org/wiki/Shaped_charge |
In digital communications shaping codes are a method of encoding that changes the distribution of signals to improve efficiency.
Typical digital communication systems uses M- Quadrature Amplitude Modulation ( QAM ) to communicate through an analog channel (specifically a communication channel with Gaussian noise ). ... | https://en.wikipedia.org/wiki/Shaping_codes |
In mathematics , the Shapiro inequality is an inequality proposed by Harold S. Shapiro in 1954. [ 1 ]
Suppose n is a natural number and x 1 , x 2 , …, x n are positive numbers and:
Then the Shapiro inequality states that
where x n +1 = x 1 and x n +2 = x 2 . The special case with n = 3 is Nesbitt's inequality .
Fo... | https://en.wikipedia.org/wiki/Shapiro_inequality |
In mathematics, the Shapiro polynomials are a sequence of polynomials which were first studied by Harold S. Shapiro in 1951 when considering the magnitude of specific trigonometric sums . [ 1 ] In signal processing , the Shapiro polynomials have good autocorrelation properties and their values on the unit circle are sm... | https://en.wikipedia.org/wiki/Shapiro_polynomials |
The Shapiro reaction or tosylhydrazone decomposition is an organic reaction in which a ketone or aldehyde is converted to an alkene through an intermediate hydrazone in the presence of 2 equivalents of organolithium reagent . [ 1 ] [ 2 ] [ 3 ] The reaction was discovered by Robert H. Shapiro in 1967. [ 4 ] The Shapiro ... | https://en.wikipedia.org/wiki/Shapiro_reaction |
The Shapiro — Senapathy algorithm (S&S) is an algorithm for predicting splice junctions in genes of animals and plants. [ 1 ] [ 2 ] This algorithm has been used to discover disease-causing splice site mutations and cryptic splice sites.
A splice site is the border between an exon and intron in a gene. These sites cont... | https://en.wikipedia.org/wiki/Shapiro–Senapathy_algorithm |
The Shapley–Sawyer Concentration Class is a classification system on a scale of one to twelve using Roman numerals for globular clusters according to their concentration. The most highly concentrated clusters such as M75 are classified as Class I, with successively diminishing concentrations ranging to Class XII, such ... | https://en.wikipedia.org/wiki/Shapley–Sawyer_Concentration_Class |
The Shapley–Shubik power index was formulated by Lloyd Shapley and Martin Shubik in 1954 to measure the powers of players in a voting game. [ 1 ]
The constituents of a voting system, such as legislative bodies, executives, shareholders, individual legislators, and so forth, can be viewed as players in an n -player gam... | https://en.wikipedia.org/wiki/Shapley–Shubik_power_index |
Shapr3D is 3D modeling software initially released for iPadOS to work with the Apple Pencil and multi-touch gesturing as a workflow. It has been ported to run on macOS and Windows . [ 1 ] [ 2 ] [ 3 ]
Shapr3D launched using the open source Open Cascade Engine in 2016 but switched over to Parasolid geometric modeling k... | https://en.wikipedia.org/wiki/Shapr3D |
The Shared Source Common Language Infrastructure (SSCLI), previously codenamed Rotor , is Microsoft 's shared source implementation of the CLI , the core of .NET . Although the SSCLI is not suitable for commercial use due to its license, it does make it possible for programmers to examine the implementation details of ... | https://en.wikipedia.org/wiki/Shared_Source_Common_Language_Infrastructure |
A shared mesh (also known as 'traditional' or 'best effort' mesh) is a wireless mesh network that uses a single radio to communicate via mesh backhaul links to all the neighboring nodes in the mesh. This is a first generation mesh where the total available bandwidth of the radio channel is ‘shared’ between all the nei... | https://en.wikipedia.org/wiki/Shared_mesh |
Shark tourism is a form of eco-tourism that allows people to dive with sharks in their natural environment. This benefits local shark populations by educating tourists and through funds raised by the shark tourism industry. Communities that previously relied on shark finning to make their livelihoods are able to make a... | https://en.wikipedia.org/wiki/Shark_tourism |
Sharkbook is a global database for identifying and tracking sharks , particularly whale sharks , using uploaded photos and videos.In addition to identifying and tracking sharks, the site allows people to "adopt a shark" and get updates on specific animals.
Sharkbook is the result of collaboration between Simon J Pier... | https://en.wikipedia.org/wiki/Sharkbook |
Sharklet , manufactured by Sharklet Technologies, is a bio-inspired plastic sheet product structured to impede microorganism growth, particularly bacterial growth . It is marketed for use in hospitals and other places with a relatively high potential for bacteria to spread and cause infections. [ 1 ]
The inspiration f... | https://en.wikipedia.org/wiki/Sharklet_(material) |
In mathematics , Sharkovskii's theorem (also spelled Sharkovsky , Sharkovskiy , Šarkovskii or Sarkovskii ), named after Oleksandr Mykolayovych Sharkovsky , who published it in 1964, is a result about discrete dynamical systems . [ 1 ] One of the implications of the theorem is that if a discrete dynamical system on the ... | https://en.wikipedia.org/wiki/Sharkovskii's_theorem |
Sharon Beder is an environmentalist [ 1 ] and former professor in the Faculty of Arts at the University of Wollongong in New South Wales , Australia. [ 2 ] Her research has focused on how power relationships are maintained and challenged, particularly by corporations and professions. She has written 11 books, and many ... | https://en.wikipedia.org/wiki/Sharon_Beder |
The Sharp Actius MM10 Muramasas was a laptop computer ( subnotebook ) developed by Sharp Corporation which started selling in 2003.
It was named after a sword master, Muramasa Tenji, and is one of the thinnest computers in the world at 20 mm thick at its maximum. It had a battery life of 2.5 hours, a 1 GHz Transmeta C... | https://en.wikipedia.org/wiki/Sharp_Actius_MM10_Muramasas |
The Sharp PC-3000 was an MS-DOS -based palmtop computer introduced in 1991. [ 1 ] [ 2 ] The "SPC" was designed and developed by Distributed Information Processing Research Ltd. ("DIP") in the UK. DIP had earlier designed the Atari Portfolio and the two machines shared many design features both in hardware and software.... | https://en.wikipedia.org/wiki/Sharp_PC-3000 |
Sharpless asymmetric dihydroxylation (also called the Sharpless bishydroxylation ) is the chemical reaction of an alkene with osmium tetroxide in the presence of a chiral quinine ligand to form a vicinal diol . The reaction has been applied to alkenes of virtually every substitution, often high enantioselectivities are... | https://en.wikipedia.org/wiki/Sharpless_asymmetric_dihydroxylation |
The Sharpless epoxidation reaction is an enantioselective chemical reaction to prepare 2,3-epoxyalcohols from primary and secondary allylic alcohols . The oxidizing agent is tert -butyl hydroperoxide . The method relies on a catalyst formed from titanium tetra(isopropoxide) and diethyl tartrate . [ 1 ] [ 2 ] [ 3 ] [ 4... | https://en.wikipedia.org/wiki/Sharpless_epoxidation |
The Sharpless oxyamination (often known as Sharpless aminohydroxylation ) is the chemical reaction that converts an alkene to a vicinal amino alcohol . The reaction is related to the Sharpless dihydroxylation , which converts alkenes to vicinal diols. [ 1 ] Vicinal amino-alcohols are important products in organic synt... | https://en.wikipedia.org/wiki/Sharpless_oxyamination |
Sharps waste is a form of biomedical waste composed of used "sharps", which includes any device or object used to puncture or lacerate the skin. Sharps waste is classified as biohazardous waste and must be carefully handled. Common medical materials treated as sharps waste are hypodermic needles ,
disposable scalpels a... | https://en.wikipedia.org/wiki/Sharps_waste |
In high energy physics detectors , shashlik is a layout for a sampling calorimeter . It refers to a stack of alternating slices of absorber (e.g. lead , brass ) and scintillator materials (crystal or plastic), which is penetrated by a wavelength shifting fiber running perpendicular to the absorber and scintillator tile... | https://en.wikipedia.org/wiki/Shashlik_(physics) |
In computing, a shatter attack is a programming technique employed by hackers on Microsoft Windows operating systems to bypass security restrictions between processes in a session . A shatter attack takes advantage of a design flaw in Windows's message-passing system whereby arbitrary code could be injected into any o... | https://en.wikipedia.org/wiki/Shatter_attack |
In mathematics, a sheaf of planes is the set of all planes that have the same common line . [ 1 ] [ 2 ] It may also be known as a fan of planes or a pencil of planes .
When extending the concept of line to the line at infinity , a set of parallel planes can be seen as a sheaf of planes intersecting in a line at infini... | https://en.wikipedia.org/wiki/Sheaf_of_planes |
In geology , shear is the response of a rock to deformation usually by compressive stress and forms particular textures. Shear can be homogeneous or non-homogeneous, and may be pure shear or simple shear . Study of geological shear is related to the study of structural geology , rock microstructure or rock texture and... | https://en.wikipedia.org/wiki/Shear_(geology) |
In solid mechanics , a shear band (or, more generally, a strain localization ) is a narrow zone of intense strain due to shearing , usually of plastic nature, developing during severe deformation of ductile materials.
As an example, a soil (overconsolidated silty-clay) specimen is shown in Fig. 1, after an axialsymmetr... | https://en.wikipedia.org/wiki/Shear_band |
In solid mechanics , shear flow is the shear stress over a distance in a thin-walled structure. [ 1 ] In fluid dynamics , shear flow is the flow induced by a force in a fluid.
For thin-walled profiles, such as that through a beam or semi-monocoque structure, the shear stress distribution through the thickness can be n... | https://en.wikipedia.org/wiki/Shear_flow |
In solid mechanics , shearing forces are unaligned forces acting on one part of a body in a specific direction, and another part of the body in the opposite direction. When the forces are collinear (aligned with each other), they are called tension forces or compression forces . Shear force can also be defined in terms... | https://en.wikipedia.org/wiki/Shear_force |
In plane geometry , a shear mapping is an affine transformation that displaces each point in a fixed direction by an amount proportional to its signed distance from a given line parallel to that direction. [ 1 ]
This type of mapping is also called shear transformation , transvection , or just shearing . The transforma... | https://en.wikipedia.org/wiki/Shear_mapping |
In plane geometry , a shear mapping is an affine transformation that displaces each point in a fixed direction by an amount proportional to its signed distance from a given line parallel to that direction. [ 1 ]
This type of mapping is also called shear transformation , transvection , or just shearing . The transforma... | https://en.wikipedia.org/wiki/Shear_matrix |
In materials science , shear modulus or modulus of rigidity , denoted by G , or sometimes S or μ , is a measure of the elastic shear stiffness of a material and is defined as the ratio of shear stress to the shear strain : [ 1 ]
where
The derived SI unit of shear modulus is the pascal (Pa), although it is usually exp... | https://en.wikipedia.org/wiki/Shear_modulus |
A shear pin is a mechanical detail designed to allow a specific outcome to occur once a predetermined force is applied. It can either function as a safeguard designed to break to protect other parts, or as a conditional operator that will not allow a mechanical device to operate until the correct force is applied.
In ... | https://en.wikipedia.org/wiki/Shear_pin |
The shear strength of a discontinuity in a soil or rock mass may have a strong impact on the mechanical behavior of a soil or rock mass. [ 1 ] [ 2 ] [ 3 ] [ 4 ] [ 5 ] [ 6 ] The shear strength of a discontinuity is often considerably lower than the shear strength of the blocks of intact material in between the discontin... | https://en.wikipedia.org/wiki/Shear_strength_(discontinuity) |
In rheology , shear thinning is the non-Newtonian behavior of fluids whose viscosity decreases under shear strain . It is sometimes considered synonymous for pseudo- plastic behaviour, [ 1 ] [ 2 ] and is usually defined as excluding time-dependent effects, such as thixotropy . [ 3 ]
Shear thinning is the most common t... | https://en.wikipedia.org/wiki/Shear_thinning |
A shear wall is an element of a structurally engineered system that is designed to resist in- plane lateral forces, typically wind and seismic loads.
A shear wall resists loads parallel to the plane of the wall. Collectors, also known as drag members, transfer the diaphragm shear to shear walls and other vertical elem... | https://en.wikipedia.org/wiki/Shear_wall |
Shearer's inequality or also Shearer's lemma, in mathematics , is an inequality in information theory relating the entropy of a set of variables to the entropies of a collection of subsets. It is named for mathematician James B. Shearer .
Concretely, it states that if X 1 , ..., X d are random variables and S 1 , ...,... | https://en.wikipedia.org/wiki/Shearer's_inequality |
Sheath current filters are electronic components that can prevent noise signals travelling in the sheath of sheathed cables, which can cause interference. Using sheath current filters, ground loops causing mains hum and high frequency common-mode signals can be prevented.
Depending on the type, sheath current filters ... | https://en.wikipedia.org/wiki/Sheath_current_filter |
Shedun is a family of malware software (also known as Kemoge, Shiftybug and Shuanet [ 1 ] [ 2 ] [ 3 ] ) targeting the Android operating system first identified in late 2015 by mobile security company Lookout , affecting roughly 20,000 [ 4 ] popular Android applications. [ 3 ] [ 5 ] [ 6 ] [ 7 ] [ 8 ] Lookout claimed the... | https://en.wikipedia.org/wiki/Shedun |
The Sheild Professorship of Pharmacology is the senior professorship in pharmacology at the University of Cambridge . It is named in honour of Marmaduke Sheild . [ 1 ]
The position was originally established on 7 June 1946 as a personal chair for the tenure of Ernest Basil Verney . On 11 March 1961 the professorship w... | https://en.wikipedia.org/wiki/Sheild_Professor_of_Pharmacology |
The Shelby Gem Factory was the production facility of ICT Incorporated, a company in Shelby, Michigan , United States, that manufactured artificial gemstones through proprietary processes. ICT began operations in 1970 and closed in December 2019.
Larry Paul Kelley established ICT (International Crystal Technology [ 1 ... | https://en.wikipedia.org/wiki/Shelby_Gem_Factory |
The Sheldon spectrum is an empirically-observed feature of marine life by which the size of an organism is inversely correlated with its abundance in the ocean. The spectrum is named after Ray Sheldon, a marine ecologist at Canada’s Bedford Institute of Oceanography in Dartmouth , Nova Scotia . Sheldon and colleagues ... | https://en.wikipedia.org/wiki/Sheldon_spectrum |
Shelf-Break Fronts are a process by which stratification of the water column occurs. This stratification normally results in thermoclines, since they occur where a sudden change in water depth causes a constriction of the current flow. They can be expressed as a ratio of their potential energy due to maintaining mixed ... | https://en.wikipedia.org/wiki/Shelf-break_front |
In masonry veneer building construction, a shelf angle or masonry support is a steel angle which supports the weight of brick or stone veneer and transfers that weight onto the main structure of the building so that a gap or space can be created beneath to allow building movements to occur.
Traditional masonry buildin... | https://en.wikipedia.org/wiki/Shelf_angle |
Shelf life is the length of time that a commodity may be stored without becoming unfit for use, consumption, or sale. [ 1 ] In other words, it might refer to whether a commodity should no longer be on a pantry shelf (unfit for use), or no longer on a supermarket shelf (unfit for sale, but not yet unfit for use). It app... | https://en.wikipedia.org/wiki/Shelf_life |
A shell-and-tube heat exchanger is a class of heat exchanger designs. [ 1 ] [ 2 ] It is the most common type of heat exchanger in oil refineries and other large chemical processes, and is suited for higher-pressure applications. As its name implies, this type of heat exchanger consists of a shell (a large pressure ves... | https://en.wikipedia.org/wiki/Shell-and-tube_heat_exchanger |
A shell is a three-dimensional solid structural element whose thickness is very small compared to its other dimensions. It is characterized in structural terms by mid-plane stress which is both coplanar and normal to the surface. A shell can be derived from a plate in two steps: by initially forming the middle surface ... | https://en.wikipedia.org/wiki/Shell_(structure) |
Shell Rotella is a line of heavy-duty engine lubrication products produced by Shell plc . The line includes engine oils, gear oils and coolants. The oil carries both the American Petroleum Institute (API) diesel "C" rating as well as the API gasoline engine "S" rating. Ratings differ based on the oil. Rotella oils, lik... | https://en.wikipedia.org/wiki/Shell_Rotella |
The Shell Spher process ( Shell Pellet Heat Exchange Retorting ) is an above ground fluidization bed retorting technology for shale oil extraction . It is classified as a hot recycled solids technology. [ 1 ] [ 2 ]
Raw oil shale is crushed to a fine particles. Heat is transferred to oil shale by heat-carrying ceramic... | https://en.wikipedia.org/wiki/Shell_Spher_process |
The Shell Technology Centre was a chemical and oil products research institute in northern Cheshire, near Stanlow , owned by Anglo-Dutch Shell .
The site was first set up, in 1941, by Shell for the Ministry of Aircraft Production as the Aero Engine Research Laboratory .
It tested a BMW 801 engine with different octan... | https://en.wikipedia.org/wiki/Shell_Technology_Centre |
The Shell higher olefin process ( SHOP ) is a chemical process for the production of linear alpha olefins via ethylene oligomerization and olefin metathesis invented and exploited by Shell plc . [ 1 ] The olefin products are converted to fatty aldehydes and then to fatty alcohols , which are precursors to plasticizers ... | https://en.wikipedia.org/wiki/Shell_higher_olefin_process |
The Shell in situ conversion process ( Shell ICP ) is an in situ shale oil extraction technology to convert kerogen in oil shale to shale oil . It is developed by the Shell Oil Company .
Shell's in situ conversion process has been under development since the early 1980s. [ 1 ] In 1997, the first small scale test was c... | https://en.wikipedia.org/wiki/Shell_in_situ_conversion_process |
Shell integration (the shell method in integral calculus ) is a method for calculating the volume of a solid of revolution , when integrating along an axis perpendicular to the axis of revolution. This is in contrast to disc integration which integrates along the axis parallel to the axis of revolution.
The shell meth... | https://en.wikipedia.org/wiki/Shell_integration |
In classical mechanics , the shell theorem gives gravitational simplifications that can be applied to objects inside or outside a spherically symmetrical body. This theorem has particular application to astronomy .
Isaac Newton proved the shell theorem [ 1 ] and stated that:
A corollary is that inside a solid sphere ... | https://en.wikipedia.org/wiki/Shell_theorem |
Shellac ( / ʃ ə ˈ l æ k / ) [ 1 ] is a resin secreted by the female lac bug on trees in the forests of India and Thailand. Chemically, it is mainly composed of aleuritic acid , jalaric acid, shellolic acid, and other natural waxes. [ 2 ] It is processed and sold as dry flakes and dissolved in alcohol to make liquid she... | https://en.wikipedia.org/wiki/Shellac |
In mathematics , a shelling of a simplicial complex is a way of gluing it together from its maximal simplices (simplices that are not a face of another simplex) in a well-behaved way. A complex admitting a shelling is called shellable .
A d -dimensional simplicial complex is called pure if its maximal simplices all ha... | https://en.wikipedia.org/wiki/Shelling_(topology) |
A shellworld is any of several types of hypothetical megastructures : | https://en.wikipedia.org/wiki/Shellworld |
The Shell–Paques process , also known by the trade name of Thiopaq O&G , [ 1 ] is a gas desulfurization technology for the removal of hydrogen sulfide from natural-, refinery-, synthesis- and biogas . The process was initially named after the Shell Oil and Paques purification companies. After accession of a dedicated j... | https://en.wikipedia.org/wiki/Shell–Paques_process |
Shemen ( Hebrew : שמן , romanized : šemen ) is the most commonly used word for oil in the Hebrew scriptures , used around 170 times in a variety of contexts.
In Exodus 29:1–9 describing the ordination of Aaron and his sons, unleavened challah ( חלה ) made with oil, translated as 'cakes', and wafers ( רקיק ) spread wit... | https://en.wikipedia.org/wiki/Shemen_(bible) |
Shemen afarsimon ( Hebrew : שֶׁמֶן אֲפַרְסְמוֹן šemen ʾăp̄arsəmōn ) was a prized oil used in antiquity. The ancient Jewish community of Ein Gedi was known for its cultivation of the afarsimon. [ 1 ]
The Hebrew Bible does not mention persimmons, but in the Talmud and Midrash the Hebrew term [ which? ] may also stand f... | https://en.wikipedia.org/wiki/Shemen_Afarsimon |
The Shenzhen Metro ( 深圳地铁 ) is the rapid transit system for the city of Shenzhen in Guangdong province, China . The newest lines and extensions which opened on December 27, 2024 put the network at 595.1 kilometres (369.8 miles) [ 5 ] [ b ] of trackage. It currently operates on 17 lines with 398 stations. [ 1 ] Despite ... | https://en.wikipedia.org/wiki/Shenzhen_Metro |
Howard Sheperd " Shep " Paine was a military historian and a collector of militaria best known for the more than three decades he spent as a modeler, sculptor, miniature figure painter , and champion of the diorama . Paine arguably did more than anyone else to forward the unique hobby/art form of military miniatures ar... | https://en.wikipedia.org/wiki/Sheperd_Paine |
Shephard's lemma is a result in microeconomics having applications in the theory of the firm and in consumer choice . [ 1 ] The lemma states that if indifference curves of the expenditure or cost function are convex , then the cost-minimizing point of a given good ( i {\displaystyle i} ) with price p i {\displaystyle p... | https://en.wikipedia.org/wiki/Shephard's_lemma |
In mathematics , Shephard's problem , is the following geometrical question asked by Geoffrey Colin Shephard in 1964: if K and L are centrally symmetric convex bodies in n - dimensional Euclidean space such that whenever K and L are projected onto a hyperplane , the volume of the projection of K is smaller than the vol... | https://en.wikipedia.org/wiki/Shephard's_problem |
Sherardising or Zinc thermal diffusion is a process of galvanization of ferrous metal surfaces, also called vapour galvanising and dry galvanizing . The process is named after British metallurgist Sherard Osborn Cowper-Coles (son of naval inventor Cowper Phipps Coles ) who invented and patented the method c. 1900. [ 1 ... | https://en.wikipedia.org/wiki/Sherardising |
Sherborne Sensors is a designer and manufacturer of precision inclinometers, accelerometers and load cells. Technologies utilized include mechanical servo , solid state and strain gauge . These precision measurement tools are available as both off-the-shelf and bespoke for use in military, aerospace, civil and industr... | https://en.wikipedia.org/wiki/Sherborne_Sensors |
Sherifah Tumusiime (Born July 13, 1988) , alias "Chief Hustler" is a Ugandan Computer scientist , businesswoman , entrepreneur, and technology advocate. [ 1 ] [ 2 ] [ 3 ] She is the founder and Chief Executive Officer of Zimba Group Ltd flagship project, Zimba Women, a technology social enterprise supports and resource... | https://en.wikipedia.org/wiki/Sherifah_Tumusiime |
Sherlock Biosciences is a biotechnology company based in Cambridge, Massachusetts developing diagnostic tests using CRISPR - Cas13 . The company was founded in 2019 [ 1 ] by Feng Zhang , Jim Collins , Omar Abudayyeh, and Jonathan Gootenberg of the Broad Institute . [ 2 ]
Cas13 was discovered by Zheng and Eugene Koonin... | https://en.wikipedia.org/wiki/Sherlock_Biosciences |
The Sherman function describes the dependence of electron-atom scattering events on the spin of the scattered electrons . [ 1 ] It was first evaluated theoretically by the physicist Noah Sherman and it allows the measurement of polarization of an electron beam by Mott scattering experiments. [ 2 ] A correct evaluation ... | https://en.wikipedia.org/wiki/Sherman_function |
The Sherman trap is a box-style animal trap designed for the live capture of small mammals . It was invented by Dr. H. B. Sherman in the 1920s and became commercially available in 1955. Since that time, the Sherman trap has been used extensively by researchers in the biological sciences for capturing animals such as mi... | https://en.wikipedia.org/wiki/Sherman_trap |
In linear algebra , the Sherman–Morrison formula , named after Jack Sherman and Winifred J. Morrison, computes the inverse of a " rank -1 update" to a matrix whose inverse has previously been computed. [ 1 ] [ 2 ] [ 3 ] That is, given an invertible matrix A {\displaystyle A} and the outer product u v T {\displaystyle u... | https://en.wikipedia.org/wiki/Sherman–Morrison_formula |
The Sheth–Tormen approximation is a halo mass function .
The Sheth–Tormen approximation extends the Press–Schechter formalism by assuming that halos are not necessarily spherical, but merely elliptical. The distribution of the density fluctuation is as follows: f ( σ r ) = A 2 a π [ 1 + ( σ r 2 a δ c 2 ) 0.3 ] δ c σ... | https://en.wikipedia.org/wiki/Sheth–Tormen_approximation |
The Shi epoxidation is a chemical reaction described as the asymmetric epoxidation of alkenes with oxone (potassium peroxymonosulfate) and a fructose -derived catalyst ( 1 ). This reaction is thought to proceed via a dioxirane intermediate, generated from the catalyst ketone by oxone (potassium peroxymonosulfate). The ... | https://en.wikipedia.org/wiki/Shi_epoxidation |
Shield lichen is the common name for lichens in either the genus Heterodermia or genus Parmelia . [ 1 ]
This article about lichens or lichenology is a stub . You can help Wikipedia by expanding it . | https://en.wikipedia.org/wiki/Shield_lichen |
A shielded data link (SDL) connector is a type of electrical connector in which the signal pins are surrounded by a metal shield . The connector was designed by AMP (now TE Connectivity) and is available with a range of pins (4 to 16). It also features a locking mechanism and is available in differently keyed plugs tha... | https://en.wikipedia.org/wiki/Shielded_data_link_connector |
In chemistry , the shielding effect sometimes referred to as atomic shielding or electron shielding describes the attraction between an electron and the nucleus in any atom with more than one electron . The shielding effect can be defined as a reduction in the effective nuclear charge on the electron cloud, due
to a di... | https://en.wikipedia.org/wiki/Shielding_effect |
Shielding gases are inert or semi- inert gases that are commonly used in several welding processes, most notably gas metal arc welding and gas tungsten arc welding (GMAW and GTAW, more popularly known as MIG (Metal Inert Gas) and TIG (Tungsten Inert Gas), respectively). Their purpose is to protect the weld area from ox... | https://en.wikipedia.org/wiki/Shielding_gas |
The Shields formula is a formula for the stability calculation of granular material ( sand , gravel ) in running water.
The stability of granular material in flow can be determined by the Shields formula or the Izbash formula . The first is more suitable for fine grain material (such as sand and gravel ), while the Iz... | https://en.wikipedia.org/wiki/Shields_formula |
The Shields parameter , also called the Shields criterion or Shields number , is a nondimensional number used to calculate the initiation of motion of sediment in a fluid flow . It is a dimensionalization of a shear stress , and is typically denoted ψ {\displaystyle \psi } or θ {\displaystyle \theta } . This parameter ... | https://en.wikipedia.org/wiki/Shields_parameter |
A shift register lookup table , also shift register LUT or SRL , refers to a component in digital circuitry . It is essentially a shift register of variable length. The length of SRL is set by driving address pins high or low and can be changed dynamically, if necessary. [ 1 ]
The SRL component is used in FPGA devices... | https://en.wikipedia.org/wiki/Shift_register_lookup_table |
In mathematics , the (exponential) shift theorem is a theorem about polynomial differential operators ( D -operators) and exponential functions . It permits one to eliminate, in certain cases, the exponential from under the D -operators.
The theorem states that, if P ( D ) is a polynomial of the D -operator, then, for... | https://en.wikipedia.org/wiki/Shift_theorem |
The net electrostatic force acting on a charged particle with index i {\displaystyle i} contained within a collection of particles is given as:
F ( r ) = ∑ j ≠ i F ( r ) r ^ ; F ( r ) = q i q j 4 π ε 0 r 2 {\displaystyle \mathbf {F} (\mathbf {r} )=\sum _{j\neq i}F(r)\mathbf {\hat {r}} \,\,\,;\,\,F(r)={\frac {q_{i}q_{j... | https://en.wikipedia.org/wiki/Shifted_force_method |
The shifting balance theory is a theory of evolution proposed in 1932 by Sewall Wright , suggesting that adaptive evolution may proceed most quickly when a population divides into subpopulations with restricted gene flow . The name of the theory is borrowed from Wright's metaphor of fitness landscapes ( evolutionary l... | https://en.wikipedia.org/wiki/Shifting_balance_theory |
Shiga toxins are a family of related toxins with two major groups, Stx1 and Stx2, expressed by genes considered to be part of the genome of lambdoid prophages . [ 1 ] The toxins are named after Kiyoshi Shiga , who first described the bacterial origin of dysentery caused by Shigella dysenteriae . [ 2 ] Shiga-like toxin ... | https://en.wikipedia.org/wiki/Shiga_toxin |
Shiina esterification is an organic chemical reaction that synthesizes carboxylic esters from nearly equal amounts of carboxylic acids and alcohols by using aromatic carboxylic acid anhydrides as dehydration condensation agents. In 1994, Prof. Isamu Shiina ( Tokyo University of Science , Japan) reported an acidic coupl... | https://en.wikipedia.org/wiki/Shiina_esterification |
Shiina macrolactonization (or Shiina lactonization ) is an organic chemical reaction that synthesizes cyclic compounds by using aromatic carboxylic acid anhydrides as dehydration condensation agents. In 1994, Prof. Isamu Shiina ( Tokyo University of Science , Japan) reported an acidic cyclization method using Lewis aci... | https://en.wikipedia.org/wiki/Shiina_macrolactonization |
Shikimic acid , more commonly known as its anionic form shikimate , is a cyclohexene , a cyclitol and a cyclohexanecarboxylic acid . It is an important biochemical metabolite in plants and microorganisms. Its name comes from the Japanese flower shikimi ( シキミ , the Japanese star anise , Illicium anisatum ), from which i... | https://en.wikipedia.org/wiki/Shikimic_acid |
The Shilov system is a classic example of catalytic C-H bond activation and oxidation which preferentially activates stronger C-H bonds over weaker C-H bonds for an overall partial oxidation. [ 1 ] [ 2 ] [ 3 ] [ 4 ] [ 5 ] [ 6 ] [ 7 ] [ 8 ]
The Shilov system was discovered by Alexander E. Shilov in 1969-1972 while inve... | https://en.wikipedia.org/wiki/Shilov_system |
Shilshila Acharya is a Nepalese environmental scientist who led successful campaigns to increase Nepal's plastic recycling. She has reduced her country's use of plastic bags and she has recovered refuse abandoned by visiting mountaineers. In 2024 she joined the BBC's list of 100 inspiring women .
Acharya was born in B... | https://en.wikipedia.org/wiki/Shilshila_Acharya |
A shim is a device used to adjust the homogeneity of a magnetic field . Shims received their name from the purely mechanical shims used to adjust position and parallelity of the pole faces of an electromagnet. Coils used to adjust the homogeneity of a magnetic field by changing the current flowing through it were calle... | https://en.wikipedia.org/wiki/Shim_(magnetism) |
In thermodynamics , the Shimansky equation describes the temperature dependence of the heat of vaporization (also known as the enthalpy of vaporization or the heat of evaporation ): [ 1 ]
where:
This equation was obtained in 1955 by Yu. I. Shimansky, at first empirically , and later derived theoretically. The Shimans... | https://en.wikipedia.org/wiki/Shimansky_equation |
Shimshon Avraham Amitsur (born Kaplan ; Hebrew : שמשון אברהם עמיצור ; August 26, 1921 – September 5, 1994) was an Israeli mathematician . He is best known for his work in ring theory , in particular PI rings , an area of abstract algebra .
Amitsur was born in Jerusalem and studied at the Hebrew University under the s... | https://en.wikipedia.org/wiki/Shimshon_Amitsur |
In mathematics , Shimura's reciprocity law , introduced by Shimura ( 1971 ), describes the action of ideles of imaginary quadratic fields on the values of modular functions at singular moduli . It forms a part of the Kronecker Jugendtraum , explicit class field theory for such fields. There are also higher-dimensiona... | https://en.wikipedia.org/wiki/Shimura's_reciprocity_law |
Shingling was a stage in the production of bar iron or steel , in the finery and puddling processes. As with many ironmaking terms, this is derived from the French - cinglage .
The product of the finery was a bloom or loop (from old Frankish luppa or lopp , meaning a shapeless mass); that of the puddling furnace was ... | https://en.wikipedia.org/wiki/Shingling |
The Shinnar–Le Roux (SLR) algorithm [ 1 ] [ 2 ] [ 3 ] [ 4 ] [ 5 ] [ 6 ] [ 7 ] is a mathematical tool for generating frequency-selective radio frequency (RF) pulses in magnetic resonance imaging (MRI) . Frequency selective pulses are used in MRI to isolate a slice through the subject for excitation, inversion and satura... | https://en.wikipedia.org/wiki/Shinnar–Le_Roux_algorithm |
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