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Rolling hairpin replication ( RHR ) is a unidirectional, strand displacement form of DNA replication used by parvoviruses, a group of viruses that constitute the family Parvoviridae . Parvoviruses have linear, single-stranded DNA (ssDNA) genomes in which the coding portion of the genome is flanked by telomeres at each ... | https://en.wikipedia.org/wiki/Terminal_resolution |
Terminal restriction fragment length polymorphism ( TRFLP or sometimes T-RFLP ) is a molecular biology technique for profiling of microbial communities based on the position of a restriction site closest to a labelled end of an amplified gene. The method is based on digesting a mixture of PCR amplified variants of a si... | https://en.wikipedia.org/wiki/Terminal_restriction_fragment_length_polymorphism |
Terminal velocity is the maximum speed attainable by an object as it falls through a fluid ( air is the most common example). It is reached when the sum of the drag force ( F d ) and the buoyancy is equal to the downward force of gravity ( F G ) acting on the object. Since the net force on the object is zero, the objec... | https://en.wikipedia.org/wiki/Terminal_velocity |
The terminal web is a filamentous structure found at the apical surface of epithelial cells that possess microvilli . It is composed primarily of actin filaments stabilized by spectrin , which also anchors the terminal web to the apical cell membrane. The presence of myosin II and tropomyosin helps to explain the cont... | https://en.wikipedia.org/wiki/Terminal_web |
In molecular biology , a termination factor is a protein that mediates the termination of RNA transcription by recognizing a transcription terminator and causing the release of the newly made mRNA . This is part of the process that regulates the transcription of RNA to preserve gene expression integrity and are present... | https://en.wikipedia.org/wiki/Termination_factor |
In computer science , termination analysis is program analysis which attempts to determine whether the evaluation of a given program halts for each input. This means to determine whether the input program computes a total function.
It is closely related to the halting problem , which is to determine whether a given pr... | https://en.wikipedia.org/wiki/Termination_proof |
In genetics , a transcription terminator is a section of nucleic acid sequence that marks the end of a gene or operon in genomic DNA during transcription . This sequence mediates transcriptional termination by providing signals in the newly synthesized transcript RNA that trigger processes which release the transcript... | https://en.wikipedia.org/wiki/Terminator_(genetics) |
The Terminologia Histologica ( TH ) is the controlled vocabulary for use in cytology and histology . [ 1 ] [ 2 ] In April 2011, Terminologia Histologica was published online [ 3 ] by the Federative International Programme on Anatomical Terminologies (FIPAT), the successor of FCAT.
It was intended to replace Nomina His... | https://en.wikipedia.org/wiki/Terminologia_Histologica |
Terminology for the Description of Dynamics ( TEDDY ) aims to provide an ontology for dynamical behaviours, observable dynamical phenomena, and control elements of bio-models and biological systems in Systems Biology and Synthetic Biology . [ 1 ] [ 2 ]
This science article is a stub . You can help Wikipedia by expandi... | https://en.wikipedia.org/wiki/Terminology_for_the_Description_of_Dynamics |
Alternative medicine is a term often used to describe medical practices where are untested or untestable . Complementary medicine (CM), complementary and alternative medicine (CAM), integrated medicine or integrative medicine (IM), functional medicine, and holistic medicine are among many rebrandings of the same phenom... | https://en.wikipedia.org/wiki/Terminology_of_alternative_medicine |
A terminology server is a piece of software providing a range of terminology -related software services through an applications programming interface to its client applications .
Typical terminology services might include:
This computing article is a stub . You can help Wikipedia by expanding it . | https://en.wikipedia.org/wiki/Terminology_server |
Termitophiles are macro-organisms adapted to live in association with termites or their nests. They include vertebrates, invertebrates and fungi and can either be obligate termitophiles (those that cannot live without the termites) or non-obligate termitophiles (those that can live independently and make use of the ter... | https://en.wikipedia.org/wiki/Termitophile |
Terms of orientation , terms of location , or spatial words are common linguistic descriptors used to indicate the spatial positioning of objects in three-dimensional space , including notions of top , bottom , front , back , left side , and right side as used in everyday language and interactions. Assigning these to o... | https://en.wikipedia.org/wiki/Terms_of_orientation |
A ternary complex is a protein complex containing three different molecules that are bound together. In structural biology , ternary complex can also be used to describe a crystal containing a protein with two small molecules bound, such as a cofactor and a substrate ; or a complex formed between two proteins and a sin... | https://en.wikipedia.org/wiki/Ternary_complex |
In inorganic chemistry and materials chemistry , a ternary compound or ternary phase is a chemical compound containing three different elements.
While some ternary compounds are molecular, e.g. chloroform ( HCCl 3 ), more typically ternary phases refer to extended solids. The perovskites are a famous example. [ 1 ]
... | https://en.wikipedia.org/wiki/Ternary_compound |
In mathematics , a ternary equivalence relation is a kind of ternary relation analogous to a binary equivalence relation . A ternary equivalence relation is symmetric, reflexive, and transitive, where those terms are meant in the sense defined below. The classic example is the relation of collinearity among three point... | https://en.wikipedia.org/wiki/Ternary_equivalence_relation |
Ternary fission is a comparatively rare (0.2 to 0.4% of events) type of nuclear fission in which three charged products are produced rather than two. As in other nuclear fission processes, other uncharged particles such as multiple neutrons and gamma rays are produced in ternary fission.
Ternary fission may happen dur... | https://en.wikipedia.org/wiki/Ternary_fission |
A ternary / ˈ t ɜːr n ər i / numeral system (also called base 3 or trinary [ 1 ] ) has three as its base . Analogous to a bit , a ternary digit is a trit ( tri nary dig it ). One trit is equivalent to log 2 3 (about 1.58496) bits of information .
Although ternary most often refers to a system in which the three digits... | https://en.wikipedia.org/wiki/Ternary_numeral_system |
In mathematics , a ternary relation or triadic relation is a finitary relation in which the number of places in the relation is three. Ternary relations may also be referred to as 3-adic , 3-ary , 3-dimensional , or 3-place .
Just as a binary relation is formally defined as a set of pairs , i.e. a subset of the Cartes... | https://en.wikipedia.org/wiki/Ternary_relation |
" Ternatin " is a term used for two unrelated categories of biochemical compounds: | https://en.wikipedia.org/wiki/Ternatin |
Terpene synthases include:
These synthases' structures may include: | https://en.wikipedia.org/wiki/Terpene_synthase |
Terra Incognita: The Perils and Promise of Stem Cell Research , also known as Terra Incognita: Mapping Stem Cell Research , is a documentary film released by Kartemquin Films in 2007. The film follows Dr. Jack Kessler of Northwestern University in his search for a cure for spinal cord injuries using embryonic stem cel... | https://en.wikipedia.org/wiki/Terra_Incognita:_The_Perils_and_Promise_of_Stem_Cell_Research |
In chemistry , the terrace ledge kink ( TLK ) model , which is also referred to as the terrace step kink ( TSK ) model , describes the thermodynamics of crystal surface formation and transformation, as well as the energetics of surface defect formation. It is based upon the idea that the energy of an atom’s position on... | https://en.wikipedia.org/wiki/Terrace_ledge_kink_model |
Terraform is an infrastructure-as-code software tool created by HashiCorp . Users define and provide data center infrastructure using a declarative configuration language known as HashiCorp Configuration Language (HCL), or optionally JSON . [ 3 ]
Terraform manages external resources (such as public cloud infrastructur... | https://en.wikipedia.org/wiki/Terraform_(software) |
Terraforming or terraformation ("Earth-shaping") is the hypothetical process of deliberately modifying the atmosphere , temperature , surface topography or ecology of a planet , moon , or other body to be similar to the environment of Earth to make it habitable for humans to live on.
The concept of terraforming develo... | https://en.wikipedia.org/wiki/Terraforming |
Terraforming is well represented in contemporary literature, usually in the form of science fiction , as well as in popular culture . [ 1 ] [ 2 ] While many stories involving interstellar travel feature planets already suited to habitation by humans and supporting their own indigenous life, some authors prefer to addre... | https://en.wikipedia.org/wiki/Terraforming_in_popular_culture |
The terraforming of Venus or the terraformation of Venus is the hypothetical process of engineering the global environment of the planet Venus in order to make it suitable for human habitation. [ 1 ] [ 2 ] [ 3 ] Adjustments to the existing environment of Venus to support human life would require at least three major ch... | https://en.wikipedia.org/wiki/Terraforming_of_Venus |
The terrainability of a machine or robot is defined as its ability to negotiate terrain irregularities. [ 1 ]
Terrainability is a term coined in the research community and related to locomotion in the field of mobile robotics . Its various definitions generically describe the ability of the robot to handle various ter... | https://en.wikipedia.org/wiki/Terrainability |
TerreStar Corporation ( TSTR ), formerly Motient Corp. ( MNCP - 2000–2007) and American Mobile Satellite Corp. (AMSC - 1988–2000), was the controlling shareholder of TerreStar Networks Inc. , TerreStar National Services, Inc. and TerreStar Global Ltd. , and a shareholder of SkyTerra Communications.
TerreStar Networks ... | https://en.wikipedia.org/wiki/TerreStar_Corporation |
The Terrestrial Planet Finder ( TPF ) was a proposed project by NASA to construct a system of space telescopes for detecting extrasolar terrestrial planets . TPF was postponed several times and finally cancelled in 2011. [ 1 ] [ 2 ] There were two telescope systems under consideration, the TPF-I , which had several sma... | https://en.wikipedia.org/wiki/Terrestrial_Planet_Finder |
Terrestrial Time ( TT ) is a modern astronomical time standard defined by the International Astronomical Union , primarily for time-measurements of astronomical observations made from the surface of Earth. [ 1 ] For example, the Astronomical Almanac uses TT for its tables of positions ( ephemerides ) of the Sun, Moon a... | https://en.wikipedia.org/wiki/Terrestrial_Time |
Terrestrial analogue sites (also called " space analogues ") are places on Earth with assumed past or present geological, environmental or biological conditions of a celestial body such as the Moon or Mars . Analogue sites are used in the frame of space exploration to either study geological or biological processes obs... | https://en.wikipedia.org/wiki/Terrestrial_analogue_site |
Terrestrial animals are animals that live predominantly or entirely on land (e.g. cats , chickens , ants , most spiders ), as compared with aquatic animals , which live predominantly or entirely in the water (e.g. fish , lobsters , octopuses ), and semiaquatic animals, which rely on both aquatic and terrestrial habitat... | https://en.wikipedia.org/wiki/Terrestrial_animal |
Terrestrial ecosystems are ecosystems that are found on land. Examples include tundra , taiga , temperate deciduous forest , tropical rain forest , grassland , deserts . [ 1 ]
Terrestrial ecosystems differ from aquatic ecosystems by the predominant presence of soil rather than water at the surface and by the extension... | https://en.wikipedia.org/wiki/Terrestrial_ecosystem |
Terrestrial locomotion has evolved as animals adapted from aquatic to terrestrial environments. Locomotion on land raises different problems than that in water, with reduced friction being replaced by the increased effects of gravity .
As viewed from evolutionary taxonomy , there are three basic forms of animal locomo... | https://en.wikipedia.org/wiki/Terrestrial_locomotion |
A terrestrial planet , tellurian planet , telluric planet , or rocky planet , is a planet that is composed primarily of silicate , rocks or metals . Within the Solar System , the terrestrial planets accepted by the IAU are the inner planets closest to the Sun : Mercury , Venus , Earth and Mars . Among astronomers who u... | https://en.wikipedia.org/wiki/Terrestrial_planet |
Terreulactone A is a meroterpenoid isolate of Aspergillus with anti- acetylcholinesterase activity. [ 2 ] | https://en.wikipedia.org/wiki/Terreulactone_A |
A terricolous lichen is a lichen that grows on the soil as a substrate . [ 1 ] Examples include some members of the genus Peltigera . [ 2 ]
This article about lichens or lichenology is a stub . You can help Wikipedia by expanding it . | https://en.wikipedia.org/wiki/Terricolous_lichen |
TERSE is an IBM archive file format that supports lossless compression . A TERSE file may contain a sequential data set, a partitioned data set (PDS), partitioned data set extended (PDSE), or a large format dataset (DSNTYPE=LARGE). Any record format (RECFM) is allowed as long as the record length is less than 32 K (64 ... | https://en.wikipedia.org/wiki/Terse |
tert -Butanesulfinamide (also known as 2-methyl-2-propanesulfinamide or Ellman's sulfinamide ) is an organosulfur compound and a member of the class of sulfinamides . Both enantiomeric forms are commercially available and are used in asymmetric synthesis as chiral auxiliaries , often as chiral ammonia equivalents for t... | https://en.wikipedia.org/wiki/Tert-Butanesulfinamide |
tert -Butyl hydroperoxide (tBuOOH) is the organic compound with the formula (CH 3 ) 3 COOH. It is one of the most widely used hydroperoxides in a variety of oxidation processes, like the Halcon process . [ 3 ] It is normally supplied as a 69–70% aqueous solution. Compared to hydrogen peroxide and organic peracids, ter... | https://en.wikipedia.org/wiki/Tert-Butyl_hydroperoxide |
tert -Butyldimethylsilyl chloride is an organosilicon compound with the formula (Me 3 C)Me 2 SiCl (Me = CH 3 ). It is commonly abbreviated as TBSCl or TBDMSCl. It is a chlorosilane containing two methyl groups and a tert -butyl group. As such it is more bulky that trimethylsilyl chloride . It is a colorless or white ... | https://en.wikipedia.org/wiki/Tert-Butyldimethylsilyl_chloride |
sec -Butyllithium
tert -Butyllithium is a chemical compound with the formula (CH 3 ) 3 CLi. As an organolithium compound , it has applications in organic synthesis since it is a strong base , capable of deprotonating many carbon molecules, including benzene . tert -Butyllithium is available commercially as solutions i... | https://en.wikipedia.org/wiki/Tert-Butyllithium |
Tertiary is a term used in organic chemistry to classify various types of compounds (e. g. alcohols, alkyl halides, amines) or reactive intermediates (e. g. alkyl radicals, carbocations).
Tertiary central atoms compared with primary , secondary and quaternary central atoms. | https://en.wikipedia.org/wiki/Tertiary_(chemistry) |
A tertiary carbon atom is a carbon atom bound to three other carbon atoms. [ 1 ] For this reason, tertiary carbon atoms are found only in hydrocarbons containing at least four carbon atoms. They are called saturated hydrocarbons because they only contain carbon-carbon single bonds. [ 2 ] Tertiary carbons have a hybridi... | https://en.wikipedia.org/wiki/Tertiary_carbon |
In mathematics , a tertiary ideal is a two-sided ideal in a perhaps noncommutative ring that cannot be expressed as a nontrivial intersection of a right fractional ideal with another ideal. Tertiary ideals generalize primary ideals to the case of noncommutative rings . Although primary decompositions do not exist in ge... | https://en.wikipedia.org/wiki/Tertiary_ideal |
In software engineering , a tertiary review is a systematic review of systematic reviews. [ 1 ] It is also referred to as a tertiary study in the software engineering literature. However, Umbrella review is the term more commonly used in medicine.
Kitchenham et al. [ 1 ] suggest that methodologically there is no diffe... | https://en.wikipedia.org/wiki/Tertiary_review |
Etherloop is a hybrid technology combining aspects of Ethernet with other technologies to achieve a result not possible with either technology alone.
EtherLoop was originally developed in the 1990s to allow high-speed data communication access to residential customers over standard twisted-pair telephone lines, also k... | https://en.wikipedia.org/wiki/Tesla_EtherLoop |
Tessaleno Campos Devezas (born 4 December 1946 in Rio de Janeiro ) is a Brazilian -born Portuguese physicist , systems theorist , and materials scientist . He is best known for his contributions to the long waves theory in socioeconomic development, technological evolution, energy systems as well as world system analys... | https://en.wikipedia.org/wiki/Tessaleno_Devezas |
Tessellated roof is a frame and a self-supporting structural system in architecture . A simple ridged roof may inside be a tessellated system. The interlinking shapes are replicated across the moulded surface using curvilinear coordinates , a specific technique with rigid interlinking beams, having characteristics simi... | https://en.wikipedia.org/wiki/Tessellated_roof |
In computer science , the test-and-set instruction is an instruction used to write (set) 1 to a memory location and return its old value as a single atomic (i.e., non- interruptible ) operation. The caller can then "test" the result to see if the state was changed by the call. If multiple processes may access the same ... | https://en.wikipedia.org/wiki/Test-and-set |
In biology, a test is the hard shell of some spherical marine animals and protists , notably sea urchins and microorganisms such as testate foraminiferans , radiolarians , and testate amoebae . The term is also applied to the covering of scale insects . The related Latin term testa is used for the hard seed coat of pla... | https://en.wikipedia.org/wiki/Test_(biology) |
The Test Methods Regulation is a Regulation (European Union) No. 440/2008 of May 30, 2008. It, and its subsequent amendments, define tests, testing of chemicals for the REACH Regulation . They are based on the OECD Guidelines for the Testing of Chemicals .
This article about the European Union is a stub . You can he... | https://en.wikipedia.org/wiki/Test_Methods_Regulation |
The Test Template Framework ( TTF ) is a model-based testing (MBT) framework proposed by Phil Stocks and David Carrington ( Stocks & Carrington 1996 ) for the purpose of software testing . Although the TTF was meant to be notation-independent, the original presentation was made using the Z formal notation . It is one o... | https://en.wikipedia.org/wiki/Test_Template_Framework |
Test and evaluation master plan ( TEMP ) is a critical aspect of project management involving complex systems that must satisfy specification requirements. The TEMP is used to support programmatic events called milestone decisions that separate the individual phases of a project. For military systems, the level of fund... | https://en.wikipedia.org/wiki/Test_and_evaluation_master_plan |
In computer architecture , the test-and-set CPU instruction (or instruction sequence) is designed to implement mutual exclusion in multiprocessor environments. Although a correct lock can be implemented with test-and-set, the test and test-and-set optimization lowers resource contention caused by bus locking, especiall... | https://en.wikipedia.org/wiki/Test_and_test-and-set |
In computer software testing, a test assertion is an expression which encapsulates some testable logic specified about a target under test. The expression is formally presented as an assertion , along with some form of identifier , to help testers and engineers ensure that tests of the target relate properly and clearl... | https://en.wikipedia.org/wiki/Test_assertion |
Test compression is a technique used to reduce the time and cost of testing integrated circuits . The first ICs were tested with test vectors created by hand. It proved very difficult to get good coverage of potential faults, so Design for testability (DFT) based on scan and automatic test pattern generation (ATPG) w... | https://en.wikipedia.org/wiki/Test_compression |
Test data are sets of inputs or information used to verify the correctness, performance, and reliability of software systems. Test data encompass various types, such as positive and negative scenarios, edge cases, and realistic user scenarios, and aims to exercise different aspects of the software to uncover bugs and v... | https://en.wikipedia.org/wiki/Test_data |
Test environment management ( TEM ) is a function in a software delivery process which aids the software testing cycle by providing a validated, stable and usable test environment to execute the test scenarios or replicate bugs.
As with a scientific experiment, in Testing repeatability and control of variables is esse... | https://en.wikipedia.org/wiki/Test_environment_management |
A test probe is a physical device used to connect electronic test equipment to a device under test (DUT). Test probes range from very simple, robust devices to complex probes that are sophisticated, expensive, and fragile. Specific types include test prods , oscilloscope probes and current probes . A test probe is ofte... | https://en.wikipedia.org/wiki/Test_probe |
In computer science and engineering , a test vector is a set of inputs provided to a system in order to test that system. In software development , test vectors are a methodology of software testing and software verification and validation .
In computer science and engineering, a system acts as a computable function ... | https://en.wikipedia.org/wiki/Test_vector |
A testbed aircraft is an aeroplane, helicopter or other kind of aircraft intended for flight research or testing the aircraft concepts or on-board equipment. These could be specially designed or modified from serial production aircraft. [ 1 ] [ 2 ]
For example, in development of new aircraft engines , these are fitted... | https://en.wikipedia.org/wiki/Testbed_aircraft |
In software engineering , tester-driven development , or bug-driven development , is an anti-pattern where the requirements are determined by bug reports or test results rather than, for example, the value or cost of a feature . The concept is generally invoked facetiously, and comes with the implication that high volu... | https://en.wikipedia.org/wiki/Tester-driven_development |
Testican is a type of proteoglycan . Testican-1 is a highly conserved, multidomain proteoglycan that is most prominently expressed in the thalamus , and is upregulated in activated astroglial cells of the cerebrum. Several functions of this gene product have now been demonstrated in vitro including membrane-type matrix... | https://en.wikipedia.org/wiki/Testican |
Testicular Immunology is the study of the immune system within the testis . It includes an investigation of the effects of infection , inflammation and immune factors on testicular function. Two unique characteristics of testicular immunology are evident: (1) the testis is described as an immunologically privileged sit... | https://en.wikipedia.org/wiki/Testicular_immunology |
Transportable pressure vessels for high-pressure gases are routinely inspected and tested as part of the manufacturing process. They are generally marked as evidence of passing the tests, either individually or as part of a batch (some tests are destructive), and certified as meeting the standard of manufacture by the ... | https://en.wikipedia.org/wiki/Testing_and_inspection_of_diving_cylinders |
Cosmetic testing on animals is a type of animal testing used to test the safety and hypoallergenic properties of cosmetic products for use by humans.
Since this type of animal testing is often harmful to the animal subjects, it is opposed by animal rights activists and others. Cosmetic animal testing is banned in many... | https://en.wikipedia.org/wiki/Testing_cosmetics_on_animals |
Welding of advanced thermoplastic composites is a beneficial method of joining these materials compared to mechanical fastening and adhesive bonding . Mechanical fastening requires intense labor, and creates stress concentrations, while adhesive bonding requires extensive surface preparation, and long curing cycles. We... | https://en.wikipedia.org/wiki/Testing_of_advanced_thermoplastic_composite_welds |
Testosterone 17beta-dehydrogenase (NADP + ) ( EC 1.1.1.64 , 17-ketoreductase , NADP-dependent testosterone-17beta-oxidoreductase , testosterone 17beta-dehydrogenase (NADP) ) is an enzyme with systematic name 17beta-hydroxysteroid:NADP + 17-oxidoreductase . [ 1 ] [ 2 ] [ 3 ] This enzyme catalyses the following chemical ... | https://en.wikipedia.org/wiki/Testosterone_17b-dehydrogenase_(NADP+) |
Testosterone glucuronide is an endogenous , naturally occurring steroid and minor urinary metabolite of testosterone . [ 1 ]
This article about a steroid is a stub . You can help Wikipedia by expanding it .
This biochemistry article is a stub . You can help Wikipedia by expanding it . | https://en.wikipedia.org/wiki/Testosterone_glucuronide |
Testosterone sulfate is an endogenous , naturally occurring steroid and minor urinary metabolite of testosterone . [ 1 ]
This article about a steroid is a stub . You can help Wikipedia by expanding it .
This biochemistry article is a stub . You can help Wikipedia by expanding it . | https://en.wikipedia.org/wiki/Testosterone_sulfate |
In human biology , the testosterone–cortisol ratio describes the ratio between testosterone , the primary male sex hormone and an anabolic steroid , and cortisol , another steroid hormone , in the human body. [ 1 ]
The ratio is often used as a biomarker of physiological stress in athletes during training, during athle... | https://en.wikipedia.org/wiki/Testosterone–cortisol_ratio |
"Testure" is a song by Canadian electro-industrial band Skinny Puppy , taken from its 1988 album VIVIsectVI and released as a single in 1989. "Testure" was the group's first and last song to chart on Billboards's Dance Club Songs , and it was accompanied with a controversial music video.
Three primary versions of "Tes... | https://en.wikipedia.org/wiki/Testure |
The TetTag mouse is a bi- transgenic mutant used in neuroscience research that expresses a persistent marker (e.g. beta-galactosidase ) under control of the immediate early gene fos . This mouse strain allows the stable labeling of activated neurons in mice in a defined time window of several hours. [ 2 ] [ 3 ]
Two in... | https://en.wikipedia.org/wiki/TetTag |
Tetanolysin is a toxin produced by Clostridium tetani bacteria. Its function is unknown, but it is believed to contribute to the pathogenesis of tetanus . The other C. tetani toxin, tetanospasmin , is more definitively linked to tetanus. It is sensitive to oxygen.
Tetanolysin belongs to a family of protein toxins know... | https://en.wikipedia.org/wiki/Tetanolysin |
A tether is a form of cell surface protrusion, separated from the cytoskeleton after the application of low pulling forces to the cell surface membrane . They are thin, viscoelastic tubes which can be observed in vivo due to shear flow caused by molecular bonds between blood cells and vessel walls, for example. [ 1 ]
... | https://en.wikipedia.org/wiki/Tether_(cell_biology) |
Tethered particle motion ( TPM ) is a biophysical method that is used for studying various polymers such as DNA and their interaction with other entities such as proteins .
The method allows observers to measure various physical properties on the substances, as well as to measure the properties of biochemical interact... | https://en.wikipedia.org/wiki/Tethered_particle_motion |
Tetra-amido macrocyclic ligands ( TAMLs ) constitute a class of macrocyclic ligands . When complexed to metals, TAMLs are proposed as environmentally friendly catalysts. Although never commercialized, iron-TAML complexes catalyze the degradation of pesticides, effluent streams from paper mills , dibenzothiophenes from ... | https://en.wikipedia.org/wiki/Tetra-amido_macrocyclic_ligand |
Tetra- n -butylammonium fluoride , commonly abbreviated to TBAF and n -Bu 4 NF , is a quaternary ammonium salt with the chemical formula (CH 3 CH 2 CH 2 CH 2 ) 4 N + F − . It is commercially available as the white solid trihydrate and as a solution in tetrahydrofuran . TBAF is used as a source of fluoride ion in organ... | https://en.wikipedia.org/wiki/Tetra-n-butylammonium_fluoride |
Tetra- tert -butylethylene is a hypothetical organic compound , a hydrocarbon with formula C 18 H 36 , or ((H 3 C−) 3 C−) 2 C=C(−C(−CH 3 ) 3 ) 2 . As the name indicates, its molecular structure can be viewed as an ethylene molecule H 2 C=CH 2 with the four hydrogens replaced by tert -butyl −C(−CH 3 ) 3 groups.
As of ... | https://en.wikipedia.org/wiki/Tetra-tert-butylethylene |
Tetra- tert -butylmethane is a hypothetical organic compound with formula C 17 H 36 , consisting of four tert -butyl groups bonded to a central carbon atom. It would be an alkane , specifically the most compact branched isomer of heptadecane .
Some calculations suggest this compound cannot exist due to the steric hind... | https://en.wikipedia.org/wiki/Tetra-tert-butylmethane |
In organic chemistry , tetraaminoethylene is a hypothetical , organic compound with formula C 2 N 4 H 8 or (H 2 N) 2 C=C(NH 2 ) 2 . Like all polyamines that are geminal , this compound has never been synthesised and is believed to be extremely unstable. [ 2 ]
However, there are many stable compounds that can be viewe... | https://en.wikipedia.org/wiki/Tetraaminoethylene |
Tetraazidomethane , C(N 3 ) 4 , is a colorless, highly explosive liquid. Its chemical structure consists of a carbon atom covalently bonded to four azide functional groups .
It was first prepared by Klaus Banert in 2006 by reaction of trichloroacetonitrile with sodium azide . [ 1 ]
As with other polyazides , tetraazi... | https://en.wikipedia.org/wiki/Tetraazidomethane |
Tetrabutylammonium is a quaternary ammonium cation with the formula [N(C 4 H 9 ) 4 ] + , also denoted [NBu 4 ] + (where Bu = butyl group ). It is used in the research laboratory to prepare lipophilic salts of inorganic anions. Relative to tetraethylammonium derivatives, tetrabutylammonium salts are more lipophilic but ... | https://en.wikipedia.org/wiki/Tetrabutylammonium |
Tetrabutylammonium tribromide , abbreviated to TBATB , is a pale orange solid with the formula [N(C 4 H 9 ) 4 ]Br 3 . It is a salt of the lipophilic tetrabutylammonium cation and the linear tribromide anion. [ 3 ] [ 4 ] The salt is sometimes used as a reagent used in organic synthesis as a conveniently weighable, soli... | https://en.wikipedia.org/wiki/Tetrabutylammonium_tribromide |
This page provides supplementary chemical data on tetrachloroethylene .
The handling of this chemical may incur notable safety precautions. It is highly recommended that you seek the Material Safety Datasheet ( MSDS ) for this chemical from a reliable source such as SIRI , and follow its directions. MSDS is available... | https://en.wikipedia.org/wiki/Tetrachloroethylene_(data_page) |
The tetractys ( Greek : τετρακτύς ), or tetrad , [ 1 ] or the tetractys of the decad [ 2 ] is a triangular figure consisting of ten points arranged in four rows: one, two, three, and four points in each row, which is the geometrical representation of the fourth triangular number . As a mystical symbol, it was very impo... | https://en.wikipedia.org/wiki/Tetractys |
Tetracyanoethylene ( TCNE ) is organic compound with the formula C 2 (CN) 4 . It is a colorless solid, although samples are often off-white. It is an important member of the cyanocarbons .
TCNE is prepared by brominating malononitrile in the presence of potassium bromide to give the KBr-complex, and dehalogenating wit... | https://en.wikipedia.org/wiki/Tetracyanoethylene |
Tetracyclics are cyclic chemical compounds that contain four fused rings of atoms, for example, Tröger's base .
Some tricyclic compounds having three fused and one tethered ring (connected to main nucleus by a single bond) can also classified as tetracyclic, for example, ciclazindol . [ 1 ]
Tetracyclic compounds have... | https://en.wikipedia.org/wiki/Tetracyclic |
Tetracycline , sold under various brand names, is an antibiotic in the tetracyclines family of medications, used to treat a number of infections , [ 3 ] including acne , cholera , brucellosis , plague , malaria , and syphilis . [ 3 ] It is available in oral and topical formulations. [ 4 ] [ 5 ]
Common side effects inc... | https://en.wikipedia.org/wiki/Tetracycline |
In geometry , a tetrad is a set of four simply connected disjoint planar regions in the plane, each pair sharing a finite portion of common boundary. It was named by Michael R. W. Buckley in 1975 in the Journal of Recreational Mathematics . A further question was proposed that became a puzzle, whether the 4 regions cou... | https://en.wikipedia.org/wiki/Tetrad_(geometry_puzzle) |
The tetrad formalism is an approach to general relativity that generalizes the choice of basis for the tangent bundle from a coordinate basis to the less restrictive choice of a local basis, i.e. a locally defined set of four [ a ] linearly independent vector fields called a tetrad or vierbein . [ 1 ] It is a special c... | https://en.wikipedia.org/wiki/Tetrad_formalism |
Tetraethylammonium trichloride (also known as Mioskowski reagent ) [ 2 ] is a chemical compound with the formula [NEt 4 ][Cl 3 ] consisting of a tetraethylammonium cation and a trichloride as anion. The trichloride is also known as trichlorine monoanion representing one of the simplest polychlorine anions. [ 3 ] Tetrae... | https://en.wikipedia.org/wiki/Tetraethylammonium_trichloride |
In 4-dimensional geometry , the tetrahedral bipyramid is the direct sum of a tetrahedron and a segment, {3,3} + { }. Each face of a central tetrahedron is attached with two tetrahedra, creating 8 tetrahedral cells, 16 triangular faces, 14 edges, and 6 vertices. [ 1 ] A tetrahedral bipyramid can be seen as two tetrahedr... | https://en.wikipedia.org/wiki/Tetrahedral_bipyramid |
In 4-dimensional geometry , the tetrahedral cupola is a polychoron bounded by one tetrahedron , a parallel cuboctahedron , connected by 10 triangular prisms , and 4 triangular pyramids . [ 1 ]
The tetrahedral cupola can be sliced off from a runcinated 5-cell , on a hyperplane parallel to a tetrahedral cell. The cuboct... | https://en.wikipedia.org/wiki/Tetrahedral_cupola |
In a tetrahedral molecular geometry , a central atom is located at the center with four substituents that are located at the corners of a tetrahedron . The bond angles are arccos (− 1 / 3 ) = 109.4712206...° ≈ 109.5° when all four substituents are the same, as in methane ( CH 4 ) [ 1 ] [ 2 ] as well as its heavier ... | https://en.wikipedia.org/wiki/Tetrahedral_molecular_geometry |
Tetrahedrane is a hypothetical platonic hydrocarbon with chemical formula C 4 H 4 and a tetrahedral structure. The molecule would be subject to considerable angle strain and has not been synthesized as of 2023 [update] . However, a number of derivatives have been prepared. In a more general sense, the term tetrahedra... | https://en.wikipedia.org/wiki/Tetrahedrane |
The Tetrahedron Computer Methodology was a short lived journal that was published by Pergamon Press [ 1 ] (now Elsevier ) to experiment with electronic submission of articles in the ChemText format, [ 2 ] and the sharing source code to enable reproducibility. [ 3 ] [ 4 ] [ 5 ] It was the first chemical journal to be pu... | https://en.wikipedia.org/wiki/Tetrahedron_Computer_Methodology |
In geometry , tetrahedron packing is the problem of arranging identical regular tetrahedra throughout three-dimensional space so as to fill the maximum possible fraction of space.
Currently, the best lower bound achieved on the optimal packing fraction of regular tetrahedra is 85.63%. [ 1 ] Tetrahedra do not tile spac... | https://en.wikipedia.org/wiki/Tetrahedron_packing |
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