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select is a system call and application programming interface (API) in Unix-like and POSIX -compliant operating systems for examining the status of file descriptors of open input/output channels. [ 1 ] The select system call is similar to the poll facility introduced in UNIX System V and later operating systems. Howev...	https://en.wikipedia.org/wiki/Select_(Unix)
A selectable marker is a gene introduced into cells , especially bacteria or cells in culture , which confers one or more traits suitable for artificial selection . They are a type of reporter gene used in laboratory microbiology , molecular biology , and genetic engineering to indicate the success of a transfection or...	https://en.wikipedia.org/wiki/Selectable_marker
Selected area (electron) diffraction (abbreviated as SAD or SAED ) is a crystallographic experimental technique typically performed using a transmission electron microscope (TEM). It is a specific case of electron diffraction used primarily in material science and solid state physics as one of the most common experimen...	https://en.wikipedia.org/wiki/Selected_area_diffraction
Selected timeline related to orphan wells in Alberta, Canada is a list of events relevant to orphan wells in Alberta, Canada. Orphan wells are inactive oil or gas well sites that have no solvent owner that can be held legally or financially accountable for the decommissioning and reclamation obligations to ensure publi...	https://en.wikipedia.org/wiki/Selected_timeline_related_to_orphan_wells_in_Alberta
Selectfluor , a trademark of Air Products and Chemicals , is a reagent in chemistry that is used as a fluorine donor. This compound is a derivative of the nucleophillic base DABCO . It is a colourless salt that tolerates air and even water. It has been commercialized for use for electrophilic fluorination . [ 1 ] Sele...	https://en.wikipedia.org/wiki/Selectfluor
In computing and user interface engineering , a selection is a list of items on which user operations will take place. The user typically adds items to the list manually, although the computer may create a selection automatically. Selections are enacted through combinations of key presses on a keyboard , with a precis...	https://en.wikipedia.org/wiki/Selection_(user_interface)
Selection and amplification binding assay (SAAB) is a molecular biology technique typically used to find the DNA binding site for proteins . [ 1 ] It was developed by T. Keith Blackwell and Harold M. Weintraub in 1990. SAAB experimental procedure consists of several steps, depending upon the knowledge available about ...	https://en.wikipedia.org/wiki/Selection_and_amplification_binding_assay
Selection coefficient , usually denoted by the letter s , is a measure used in population genetics to quantify the relative fitness of a genotype compared to other genotypes. Selection coefficients are central to the quantitative description of evolution, since fitness differences determine the change in genotype frequ...	https://en.wikipedia.org/wiki/Selection_coefficient
A selection limit is a term from animal breeding and quantitative genetics that refers to a cessation of progress even when continued directional selection is being applied to a trait, such as body size . In other words, a breeder or scientist is using selective breeding (artificial selection) and choosing individuals...	https://en.wikipedia.org/wiki/Selection_limits
In mathematics, a selection principle is a rule asserting the possibility of obtaining mathematically significant objects by selecting elements from given sequences of sets . The theory of selection principles studies these principles and their relations to other mathematical properties. Selection principles mainly de...	https://en.wikipedia.org/wiki/Selection_principle
In physics and chemistry , a selection rule , or transition rule , formally constrains the possible transitions of a system from one quantum state to another. Selection rules have been derived for electromagnetic transitions in molecules , in atoms , in atomic nuclei , and so on. The selection rules may differ accordin...	https://en.wikipedia.org/wiki/Selection_rule
The selection shadow is a concept involved with the evolutionary theories of aging that states that selection pressures on an individual decrease as an individual ages and passes sexual maturity , resulting in a "shadow" of time where selective fitness is not considered. Over generations, this results in maladaptive mu...	https://en.wikipedia.org/wiki/Selection_shadow
Selective Repeat ARQ or Selective Reject ARQ is a specific instance of the automatic repeat request (ARQ) protocol used to manage sequence numbers and retransmissions in reliable communications . Selective Repeat is part of the automatic repeat request (ARQ). With selective repeat, the sender sends a number of frames ...	https://en.wikipedia.org/wiki/Selective_Repeat_ARQ
In surface science , selective adsorption is the effect when minima associated with bound-state resonances occur in specular intensity in atom-surface scattering . In crystal growth , selective adsorption refers to the phenomenon where adsorbing molecules attach preferentially to certain crystal faces. An example of ...	https://en.wikipedia.org/wiki/Selective_adsorption
Selective area epitaxy is the local growth of epitaxial layer through a patterned amorphous dielectric mask (typically SiO 2 or Si 3 N 4 ) deposited on a semiconductor substrate. Semiconductor growth conditions are selected to ensure epitaxial growth on the exposed substrate, but not on the dielectric mask. [ 1 ] SAE c...	https://en.wikipedia.org/wiki/Selective_area_epitaxy
A Selective Availability Anti-spoofing Module ( SAASM ) is used by military Global Positioning System receivers to allow decryption of precision GPS observations , while the accuracy of civilian GPS receivers may be reduced by the United States military through Selective Availability (SA) and anti-spoofing (AS). [ 1 ] ...	https://en.wikipedia.org/wiki/Selective_availability_anti-spoofing_module
Selective breeding (also called artificial selection ) is the process by which humans use animal breeding and plant breeding to selectively develop particular phenotypic traits (characteristics) by choosing which typically animal or plant males and females will sexually reproduce and have offspring together. Domesticat...	https://en.wikipedia.org/wiki/Selective_breeding
Selective catalytic reduction ( SCR ) means converting nitrogen oxides , also referred to as NO x with the aid of a catalyst into diatomic nitrogen ( N 2 ), and water ( H 2 O ). A reductant , typically anhydrous ammonia ( NH 3 ), aqueous ammonia ( NH 4 OH ), or a urea ( CO(NH 2 ) 2 ) solution, is added to a stream of f...	https://en.wikipedia.org/wiki/Selective_catalytic_reduction
In metallurgy , selective leaching , also called dealloying , demetalification , parting and selective corrosion , is a corrosion type in some solid solution alloys , when in suitable conditions a component of the alloys is preferentially leached from the initially homogenous material. The less noble metal is removed f...	https://en.wikipedia.org/wiki/Selective_leaching
Selective organ targeting ( SORT ) is a novel approach in the field of targeted drug delivery that systematically engineers multiple classes of lipid nanoparticles (LNPs) to enable targeted delivery of therapeutics to specific organs in the body. The SORT molecule alters tissue tropism by adjusting the composition and ...	https://en.wikipedia.org/wiki/Selective_organ_targeting
Selectivity , also known as circuit breaker discrimination , is the coordination of overcurrent protection devices so that a fault in the installation is cleared by the protection device located immediately upstream of the fault. The purpose of selectivity is to minimize the impact of a failure on the network. Faults i...	https://en.wikipedia.org/wiki/Selectivity_(circuit_breakers)
Selegiline , also known as L -deprenyl and sold under the brand names Eldepryl , Zelapar , and Emsam among others, is a medication which is used in the treatment of Parkinson's disease and major depressive disorder . [ 4 ] [ 6 ] [ 8 ] [ 3 ] It has also been studied and used off-label for a variety of other indications,...	https://en.wikipedia.org/wiki/Selegiline
A selenenic acid is an organoselenium compound and an oxoacid with the general formula RSeOH, where R ≠ H. It is the first member of the family of organoselenium oxoacids, which also include seleninic acids and selenonic acids , which are RSeO 2 H and RSeO 3 H, respectively. Selenenic acids derived from selenoenzymes ...	https://en.wikipedia.org/wiki/Selenenic_acid
Selenium-79 is a radioisotope of selenium present in spent nuclear fuel and the wastes resulting from reprocessing this fuel. It is one of only seven long-lived fission products . Its fission yield is low (about 0.04%), as it is near the lower end of the mass range for fission products . Its half-life has been variousl...	https://en.wikipedia.org/wiki/Selenium-79
Selenium hexasulfide is a chemical compound with the chemical formula Se 2 S 6 . Its molecular structure is an 8-membered ring, consisting of two selenium and six sulfur atoms ( diselenacyclooctasulfane ), analogous to the S 8 ring, an allotrope of sulfur ( cyclooctasulfur or cyclooctasulfane), and other 8-membered rin...	https://en.wikipedia.org/wiki/Selenium_hexasulfide
Selenium is an essential micronutrient for animals, though it is toxic in large doses. In plants, it sometimes occurs in toxic amounts as forage , e.g. locoweed . Selenium is a component of the amino acids selenocysteine and selenomethionine . In humans, selenium is a trace element nutrient that functions as cofactor f...	https://en.wikipedia.org/wiki/Selenium_in_biology
Selenium trioxide is the inorganic compound with the formula Se O 3 . It is white, hygroscopic solid. It is also an oxidizing agent and a Lewis acid . It is of academic interest as a precursor to Se(VI) compounds. [ 4 ] Selenium trioxide is difficult to prepare because it is unstable with respect to the dioxide : I...	https://en.wikipedia.org/wiki/Selenium_trioxide
Selenium yeast is a feed additive for livestock, used to increase the selenium content in their fodder . It is a form of selenium currently approved for human consumption in the EU and Britain. [ 1 ] Inorganic forms of selenium are used in feeds (namely sodium selenate and sodium selenite , which appear to work in roug...	https://en.wikipedia.org/wiki/Selenium_yeast
The selenographic coordinate system is used to refer to locations on the surface of Earth 's moon . Any position on the lunar surface can be referenced by specifying two numerical values, which are comparable to the latitude and longitude of Earth. The longitude gives the position east or west of the Moon's prime merid...	https://en.wikipedia.org/wiki/Selenographic_coordinate_system
Selenols are organic compounds that contain the functional group with the connectivity C − Se − H . Selenols are sometimes also called selenomercaptans and selenothiols . Selenols are one of the principal classes of organoselenium compounds . [ 1 ] A well-known selenol is the amino acid selenocysteine . Selenols are s...	https://en.wikipedia.org/wiki/Selenol
A selenonic acid is an organoselenium compound containing the −SeO 3 H functional group . The formula of selenonic acids is R−Se(=O) 2 −OH , where R is organyl group . Selenonic acids are the selenium analogs of sulfonic acids . [ 1 ] Examples of the acid are rare. Benzeneselenonic acid PhSeO 3 H (where Ph stands for p...	https://en.wikipedia.org/wiki/Selenonic_acid
In chemistry , a selenosulfide refers to distinct classes of inorganic and organic compounds containing sulfur and selenium. The organic derivatives contain Se-S bonds, whereas the inorganic derivatives are more variable. These species are classified as both organosulfur and organoselenium compounds. They are hybrid...	https://en.wikipedia.org/wiki/Selenosulfide
Selenoxide elimination (also called α-selenation) [ 1 ] is a method for the chemical synthesis of alkenes from selenoxides . It is most commonly used to synthesize α,β-unsaturated carbonyl compounds from the corresponding saturated analogues. [ 2 ] It is mechanistically related to the Cope reaction . After the develop...	https://en.wikipedia.org/wiki/Selenoxide_elimination
Selexol is the trade name for an acid gas removal solvent that can separate acid gases such as hydrogen sulfide and carbon dioxide from feed gas streams such as synthesis gas produced by gasification of coal, coke, or heavy hydrocarbon oils. [ 1 ] [ 2 ] By doing so, the feed gas is made more suitable (less sour ) for c...	https://en.wikipedia.org/wiki/Selexol
Self-adaptive mechanisms , sometimes simply called adaptive mechanisms, in engineering , are underactuated mechanisms that can adapt to their environment. One of the most well-known example of this type of mechanisms are underactuated fingers, grippers, and robotic hands . Contrary to standard underactuated mechanisms ...	https://en.wikipedia.org/wiki/Self-adaptive_mechanisms
In mathematics , an element of a -algebra is called self-adjoint if it is the same as its adjoint (i.e. a = a ∗ {\displaystyle a=a^{}} ). Let A {\displaystyle {\mathcal {A}}} be a -algebra. An element a ∈ A {\displaystyle a\in {\mathcal {A}}} is called self-adjoint if a = a ∗ {\displaystyle a=a^{}} . [ 1 ] The se...	https://en.wikipedia.org/wiki/Self-adjoint
Self-assembled monolayers ( SAM ) are assemblies of organic molecules that form spontaneously on surfaces by adsorption and organize themselves into more or less distinct domains (head group, chain/backbone, and tail/end group). [ 1 ] [ 2 ] In some cases, molecules that form the monolayer do not interact strongly with ...	https://en.wikipedia.org/wiki/Self-assembled_monolayer
Self-assembling peptides are a category of peptides which undergo spontaneous assembling into ordered nanostructures . Originally described in 1993, [ 1 ] these designer peptides have attracted interest in the field of nanotechnology for their potential for application in areas such as biomedical nanotechnology, [ 2 ] ...	https://en.wikipedia.org/wiki/Self-assembling_peptide
Self-assembly is a process in which a disordered system of pre-existing components forms an organized structure or pattern as a consequence of specific, local interactions among the components themselves, without external direction. When the constitutive components are molecules, the process is termed molecular self-as...	https://en.wikipedia.org/wiki/Self-assembly
A self-averaging physical property of a disordered system is one that can be described by averaging over a sufficiently large sample. The concept was introduced by Ilya Mikhailovich Lifshitz . Frequently in physics one comes across situations where quenched randomness plays an important role. Any physical property X ...	https://en.wikipedia.org/wiki/Self-averaging
A column can buckle due to its own weight with no other direct forces acting on it, in a failure mode called self-buckling . In conventional column buckling problems, the self-weight is often neglected since it is assumed to be small when compared to the applied axial loads . However, when the weight of the column is s...	https://en.wikipedia.org/wiki/Self-buckling
A self-cleaning floor is a surface that has the ability to clean itself without external action. This is usually accomplished through automated pods set to dispense water regularly, but can also be accomplished through the use of materials that naturally reduce pathogens. Such floors are designed to stay hygienic with ...	https://en.wikipedia.org/wiki/Self-cleaning_floor
Self-cleaning glass is a specific type of glass with a surface that keeps itself free of dirt and grime. The field of self-cleaning coatings on glass is divided into two categories: hydrophobic and hydrophilic . These two types of coating both clean themselves through the action of water, the former by rolling drople...	https://en.wikipedia.org/wiki/Self-cleaning_glass
A self-cleaning or pyrolytic oven is an oven which uses high temperature (approximately 932 °F (500 °C)) to burn off leftovers from baking using pyrolysis , which uses no chemical agents. The oven can be powered by domestic (non-commercial) electricity or gas. Self-cleaning pyrolytic ovens reduce food soiling to ash w...	https://en.wikipedia.org/wiki/Self-cleaning_oven
Self-cleaning surfaces are a class of materials with the inherent ability to remove any debris or bacteria from their surfaces in a variety of ways. The self-cleaning functionality of these surfaces are commonly inspired by natural phenomena observed in lotus leaves, gecko feet, and water striders to name a few. The ma...	https://en.wikipedia.org/wiki/Self-cleaning_surfaces
Self-complementary adeno-associated virus ( scAAV ) is a viral vector engineered from the naturally occurring adeno-associated virus (AAV) to be used as a tool for gene therapy . [ 1 ] Use of recombinant AAV (rAAV) has been successful in clinical trials addressing a variety of diseases. [ 2 ] This lab-made progeny of r...	https://en.wikipedia.org/wiki/Self-complementary_adeno-associated_virus
The self-consistency principle was established by Rolf Hagedorn in 1965 to explain the thermodynamics of fireballs in high energy physics collisions. A thermodynamical approach to the high energy collisions first proposed by E. Fermi . [ 1 ] The partition function of the fireballs can be written in two forms, one in t...	https://en.wikipedia.org/wiki/Self-consistency_principle_in_high_energy_physics
The self-consistent mean field (SCMF) method is an adaptation of mean field theory used in protein structure prediction to determine the optimal amino acid side chain packing given a fixed protein backbone . [1] It is faster but less accurate than dead-end elimination and is generally used in situations where the prote...	https://en.wikipedia.org/wiki/Self-consistent_mean_field_(biology)
In computing , self-contained system (SCS) is a software architecture approach that focuses on a separation of the functionality into many independent systems, making the complete logical system a collaboration of many smaller software systems. [ 1 ] SCSs have certain characteristics: Implementations [ 2 ] create la...	https://en.wikipedia.org/wiki/Self-contained_system_(software)
Self-dissimilarity is a measure of complexity defined in a series of papers by David Wolpert and William G. Macready . [ 1 ] [ 2 ] The degrees of self-dissimilarity between the patterns of a system observed at various scales (e.g. the average matter density of a physical body for volumes at different orders of magnitud...	https://en.wikipedia.org/wiki/Self-dissimilarity
A self-extracting archive ( SFX or SEA ) is a computer executable program which combines compressed data in an archive file with machine-executable code to extract the information. Running on a compatible operating system, it does not need a suitable extractor in the target computer to extract the data. [ citation need...	https://en.wikipedia.org/wiki/Self-extracting_archive
Self-framing metal buildings are a form of pre-engineered building which utilizes roll formed roof and wall panel diaphragms as significant parts of the structural supporting system. Additional structural elements may include mill or cold-formed elements to stiffen the diaphragm perimeters, transfer forces between dia...	https://en.wikipedia.org/wiki/Self-framing_metal_buildings
Self-healing concrete is characterized as the capability of concrete to fix its cracks on its own autogenously or autonomously. It not only seals the cracks but also partially or entirely recovers the mechanical properties of the structural elements. This kind of concrete is also known as self-repairing concrete. Becau...	https://en.wikipedia.org/wiki/Self-healing_concrete
Self-healing hydrogels are a specialized type of polymer hydrogel . A hydrogel is a macromolecular polymer gel constructed of a network of crosslinked polymer chains. Hydrogels are synthesized from hydrophilic monomers by either chain or step growth, along with a functional crosslinker to promote network formation. A n...	https://en.wikipedia.org/wiki/Self-healing_hydrogels
Self-healing materials are artificial or synthetically created substances that have the built-in ability to automatically repair damages to themselves without any external diagnosis of the problem or human intervention. Generally, materials will degrade over time due to fatigue , environmental conditions, or damage inc...	https://en.wikipedia.org/wiki/Self-healing_material
Self-interference cancellation ( SIC ) is a signal processing technique that enables a radio transceiver to simultaneously transmit and receive on a single channel, a pair of partially-overlapping channels, or any pair of channels in the same frequency band. When used to allow simultaneous transmission and reception on...	https://en.wikipedia.org/wiki/Self-interference_cancellation
The self-ionization of water (also autoionization of water , autoprotolysis of water , autodissociation of water , or simply dissociation of water) is an ionization reaction in pure water or in an aqueous solution , in which a water molecule, H 2 O, deprotonates (loses the nucleus of one of its hydrogen atoms) to becom...	https://en.wikipedia.org/wiki/Self-ionization_of_water
A self-making bed (also known as a smart bed ) is designed to automatically rearrange the bedding on a bed and prepare itself for use. In 2008, inventor Enrico Berruti featured his self-making bed, dubbed "Selfy", at The International Exhibition of Inventions in Geneva, Switzerland. The bed makes itself by stretching ...	https://en.wikipedia.org/wiki/Self-making_bed
Collective intelligence Collective action Self-organized criticality Herd mentality Phase transition Agent-based modelling Synchronization Ant colony optimization Particle swarm optimization Swarm behaviour Social network analysis Small-world networks Centrality Motifs Graph theory Scaling Robustness Systems biology D...	https://en.wikipedia.org/wiki/Self-organization
Collective intelligence Collective action Self-organized criticality Herd mentality Phase transition Agent-based modelling Synchronization Ant colony optimization Particle swarm optimization Swarm behaviour Social network analysis Small-world networks Centrality Motifs Graph theory Scaling Robustness Systems biology D...	https://en.wikipedia.org/wiki/Self-organized_criticality
In applied physics , the concept of controlling self-organized criticality refers to the control of processes by which a self-organized system dissipates energy . The objective of the control is to reduce the probability of occurrence of and size of energy dissipation bursts, often called avalanches , of self-organized...	https://en.wikipedia.org/wiki/Self-organized_criticality_control
A self-organizing network ( SON ) is an automation technology designed to make the planning, configuration, management, optimization and healing of mobile radio access networks simpler and faster. SON functionality and behavior has been defined and specified in generally accepted mobile industry recommendations produce...	https://en.wikipedia.org/wiki/Self-organizing_network
Self-oscillation is the generation and maintenance of a periodic motion by a source of power that lacks any corresponding periodicity. The oscillator itself controls the phase with which the external power acts on it. Self-oscillators are therefore distinct from forced and parametric resonators , in which the power tha...	https://en.wikipedia.org/wiki/Self-oscillation
Self-perpetuation , the capability of something to cause itself to continue to exist , is one of the main characteristics of life . Organisms ' capability of reproduction leads to self-perpetuation of the species, if not to the individual. Populations self-perpetuate and grow. Entire ecosystems show homeostasis , and t...	https://en.wikipedia.org/wiki/Self-perpetuation
A self-powered dynamic system [ 1 ] [ 2 ] [ 3 ] [ 4 ] [ 5 ] [ 6 ] [ 7 ] [ excessive citations ] is defined as a dynamic system powered by its own excessive kinetic energy , renewable energy or a combination of both. The particular area of work is the concept of fully or partially self-powered dynamic systems requiring ...	https://en.wikipedia.org/wiki/Self-powered_dynamic_systems
Self-preservation is a behavior or set of behaviors that ensures the survival of an organism. [ 1 ] It is thought to be universal among all living organisms. For sentient organisms, pain and fear are integral parts of this mechanism. Pain motivates the individual to withdraw from damaging situations, to protect a damag...	https://en.wikipedia.org/wiki/Self-preservation
Self-propagating high-temperature synthesis (SHS) is a method for producing both inorganic and organic compounds by exothermic combustion reactions in solids of different nature. [ 1 ] Reactions can occur between a solid reactant coupled with either a gas, liquid, or other solid. If the reactants, intermediates, and pr...	https://en.wikipedia.org/wiki/Self-propagating_high-temperature_synthesis
A self-propelled modular transporter or sometimes self-propelled modular trailer (SPMT) is a platform heavy hauler with a large array of wheels which is an upgraded version of a hydraulic modular trailer . SPMTs are used for transporting massive objects, such as large bridge sections, [ 1 ] oil refining equipment, cran...	https://en.wikipedia.org/wiki/Self-propelled_modular_transporter
Self-propelled particles (SPP), also referred to as self-driven particles, are terms used by physicists to describe autonomous agents , which convert energy from the environment into directed or persistent random walk . Natural systems which have inspired the study and design of these particles include walking, swimmin...	https://en.wikipedia.org/wiki/Self-propelled_particles
Self-propulsion is the autonomous displacement of nano-, micro- and macroscopic natural and artificial objects, containing their own means of motion. [ 2 ] [ 3 ] [ 4 ] [ 5 ] [ 6 ] [ 7 ] Self-propulsion is driven mainly by interfacial phenomena . [ 8 ] Various mechanisms of self-propelling have been introduced and inves...	https://en.wikipedia.org/wiki/Self-propulsion
Self-protein refers to all proteins endogenously produced by DNA -level transcription and translation within an organism of interest. This does not include proteins synthesized due to viral infection , but may include those synthesized by commensal bacteria within the intestines . Proteins that are not created within t...	https://en.wikipedia.org/wiki/Self-protein
A self-replicating machine is a type of autonomous robot that is capable of reproducing itself autonomously using raw materials found in the environment, thus exhibiting self-replication in a way analogous to that found in nature . [ 1 ] [ 2 ] [ 3 ] The concept of self-replicating machines has been advanced and examine...	https://en.wikipedia.org/wiki/Self-replicating_machine
Self-service is a system whereby customers acquire (or serve) themselves goods or services, paying for the items at a point-of-sale , as opposed to a shop assistant or clerk acquiring goods or providing services in addition to taking payment. Common examples include ATMs , coin-operated laundrettes , self-service check...	https://en.wikipedia.org/wiki/Self-service
In the study of partial differential equations , particularly in fluid dynamics , a self-similar solution is a form of solution which is similar to itself if the independent and dependent variables are appropriately scaled. Self-similar solutions appear whenever the problem lacks a characteristic length or time scale ...	https://en.wikipedia.org/wiki/Self-similar_solution
A self-tiling tile set , or setiset , of order n is a set of n shapes or pieces, usually planar, each of which can be tiled with smaller replicas of the complete set of n shapes. That is, the n shapes can be assembled in n different ways so as to create larger copies of themselves, where the increase in scale is the sa...	https://en.wikipedia.org/wiki/Self-tiling_tile_set
Self-verifying theories are consistent first-order systems of arithmetic , much weaker than Peano arithmetic , that are capable of proving their own consistency . Dan Willard was the first to investigate their properties, and he has described a family of such systems. According to Gödel's incompleteness theorem , thes...	https://en.wikipedia.org/wiki/Self-verifying_theories
Selig Hecht (February 8, 1892 – September 18, 1947) was an American physiologist who studied photochemistry in photoreceptor cells . Hecht was born into a Jewish family in Glogau , [ 1 ] then in the German Empire (now Głogów, Poland), the son of Mandel Hecht and Mirel Mresse. The family migrated to the United States i...	https://en.wikipedia.org/wiki/Selig_Hecht
Selinexor sold under the brand name Xpovio among others, is a selective inhibitor of nuclear export used as an anti-cancer medication . It works by blocking the action of exportin 1 [ 6 ] and thus blocking the transport of several proteins involved in cancer-cell growth from the cell nucleus to the cytoplasm , which ul...	https://en.wikipedia.org/wiki/Selinexor
Seliwanoff’s test is a chemical test which distinguishes between aldose and ketose sugars . If the sugar contains a ketone group , it is a ketose. If a sugar contains an aldehyde group, it is an aldose. This test relies on the principle that, when heated, ketoses are more rapidly dehydrated than aldoses. It is named af...	https://en.wikipedia.org/wiki/Seliwanoff's_test
In chemistry, a selone (also known as a selenoketone ) is the structural analog of a ketone where selenium replaces oxygen . Selenium-77 is one of the isotopes of selenium that is stable and naturally occurring , so selenoketone-containing chemicals can be analyzed by nuclear magnetic resonance spectroscopy (NMR). Selo...	https://en.wikipedia.org/wiki/Selone
Selters is a German brand of natural mineral water sourced from wells in the area of Selters in Hesse , at the Taunus mountains. The water has been known since the Bronze Age and famous as a natural soda water because of its high concentration of sodium bicarbonate , "soda". The Selters water also contains raised level...	https://en.wikipedia.org/wiki/Selters
Semantic P2P networks are a new type of P2P network . It combines the advantages of unstructured P2P networks and structural P2P networks, and avoids their disadvantages. In Semantic P2P networks, nodes are classified as DNS -like domain names with semantic meanings such as Alice @Brittney.popular.music. Semantic P2P ...	https://en.wikipedia.org/wiki/Semantic_P2P_networks
Semantic audio is the extraction of meaning from audio signals . The field of semantic audio is primarily based around the analysis of audio to create some meaningful metadata, which can then be used in a variety of different ways. Semantic analysis of audio is performed to reveal some deeper understanding of an audio...	https://en.wikipedia.org/wiki/Semantic_audio
A semantic broker is a computer service that automatically provides semantic mapper services. A semantic broker is frequently part of a semantic middleware system that leverage semantic equivalence statements. To qualify as a semantic broker product a system must be able to automatically extract data from a message an...	https://en.wikipedia.org/wiki/Semantic_broker
In computer programming , a logic error is a bug in a program that causes it to operate incorrectly, but not to terminate abnormally (or crash ). [ 1 ] A logic error produces unintended or undesired output or other behaviour, although it may not immediately be recognized as such. Logic errors occur in both compiled an...	https://en.wikipedia.org/wiki/Semantic_error
A semantic theory of truth is a theory of truth in the philosophy of language which holds that truth is a property of sentences. [ 1 ] The semantic conception of truth, which is related in different ways to both the correspondence and deflationary conceptions, is due to work by Polish logician Alfred Tarski . Tarski, ...	https://en.wikipedia.org/wiki/Semantic_theory_of_truth
The Semantics of Business Vocabulary and Business Rules ( SBVR ) is an adopted standard of the Object Management Group (OMG) intended to be the basis for formal and detailed natural language declarative description of a complex entity, such as a business. SBVR is intended to formalize complex compliance rules, such as...	https://en.wikipedia.org/wiki/Semantics_of_Business_Vocabulary_and_Business_Rules
In logic , the semantics of logic or formal semantics is the study of the meaning and interpretation of formal languages , formal systems , and (idealizations of) natural languages . This field seeks to provide precise mathematical models that capture the pre-theoretic notions of truth , validity , and logical conseque...	https://en.wikipedia.org/wiki/Semantics_of_logic
Semantides (or semantophoretic molecules ) are biological macromolecules that carry genetic information or a transcript thereof. Three different categories of semantides are distinguished: primary, secondary and tertiary. Primary Semantides are genes , which consist of DNA . Secondary semantides are chains of messenger...	https://en.wikipedia.org/wiki/Semantide
In computer networking , Semaphore Flag Signaling System (SFSS) is a humorous proposal to carry Internet Protocol (IP) traffic by semaphores . Semaphore Flag Signaling System was initially described in RFC 4824, [ 1 ] an April Fools' Day RFC issued by the Internet Engineering Task Force edited by J. Hofmueller, et al....	https://en.wikipedia.org/wiki/Semaphore_Flag_Signaling_System
Semelparity and iteroparity are two contrasting reproductive strategies available to living organisms. A species is considered semelparous if it is characterized by a single reproductive episode before death, and iteroparous if it is characterized by multiple reproductive cycles over the course of its lifetime. Iterop...	https://en.wikipedia.org/wiki/Semelparity_and_iteroparity
The Semenov Institute of Chemical Physics [ 1 ] [ 2 ] of Russian Academy of Sciences (RAS) (now known as the Semenov ICP in Moscow Russian : Институт химической физики им. Н. Н. Семёнова, Москва, учреждение Российской академии наук ), was established in 1931 under the direction of Professor Nikolay Semyonov , Nobel Lau...	https://en.wikipedia.org/wiki/Semenov_Institute_of_Chemical_Physics
The Semi-Conductor Laboratory (SCL) , Mohali is a research institute under the Ministry of Electronics and Information Technology , Government of India . SCL was formerly under the Department of Space . SCL's aims include research and development (R&D) in the field of semiconductor technology. [ 1 ] Semiconductors manu...	https://en.wikipedia.org/wiki/Semi-Conductor_Laboratory
Semi-automation is a process or procedure that is performed by the combined activities of man and machine with both human and machine steps typically orchestrated by a centralized computer controller. Within manufacturing, production processes may be fully manual , semi-automated, or fully automated . In this case, se...	https://en.wikipedia.org/wiki/Semi-automation
Semi-biotic systems are systems that incorporate biologically derived components/modules – which could range from multi- protein complexes through DNA constructs to multi-cellular assemblies – and integrate them with synthetic components (e.g. microfabricated systems) to produce hybrid devices. One of the potential att...	https://en.wikipedia.org/wiki/Semi-biotic_systems
In mathematical analysis , semicontinuity (or semi-continuity ) is a property of extended real -valued functions that is weaker than continuity . An extended real-valued function f {\displaystyle f} is upper (respectively, lower ) semicontinuous at a point x 0 {\displaystyle x_{0}} if, roughly speaking, the function va...	https://en.wikipedia.org/wiki/Semi-continuity
Semi-deciduous or semi-evergreen is a botanical term which refers to plants that lose their foliage for a very short period, when old leaves fall off and new foliage growth is starting. This phenomenon occurs in tropical and sub-tropical woody species, for example in Dipteryx odorata . [ 1 ] Semi-deciduous or semi-ever...	https://en.wikipedia.org/wiki/Semi-deciduous
In calculus , the notions of one-sided differentiability and semi-differentiability of a real -valued function f of a real variable are weaker than differentiability . Specifically, the function f is said to be right differentiable at a point a if, roughly speaking, a derivative can be defined as the function's argumen...	https://en.wikipedia.org/wiki/Semi-differentiability
A semi-drying oil is an oil which partially hardens when it is exposed to air. This is as opposed to a drying oil , [ 1 ] which hardens completely, or a non-drying oil , which does not harden at all. Oils with an iodine number of 115–130 are considered semi-drying.	https://en.wikipedia.org/wiki/Semi-drying_oil
In nuclear physics , the semi-empirical mass formula ( SEMF ; sometimes also called the Weizsäcker formula , Bethe–Weizsäcker formula , or Bethe–Weizsäcker mass formula to distinguish it from the Bethe–Weizsäcker process ) is used to approximate the mass of an atomic nucleus from its number of protons and neutrons . As...	https://en.wikipedia.org/wiki/Semi-empirical_mass_formula

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