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Tuft cells are chemosensory cells in the epithelial lining of the intestines . Similar tufted cells are found in the respiratory epithelium where they are known as brush cells . [ 1 ] The name "tuft" refers to the brush-like microvilli projecting from the cells. Ordinarily there are very few tuft cells present but they... | https://en.wikipedia.org/wiki/Tuft_cell |
Tufting is a type of textile manufacturing in which a thread is inserted on a primary base.
It is an ancient technique for making warm garments , especially mittens . After the knitting is done, short U-shaped loops of extra yarn are introduced through the fabric from the outside so that their ends point inwards (e.g.... | https://en.wikipedia.org/wiki/Tufting |
The Tufts Center for the Study of Drug Development is an independent, academic, non-profit research center at Tufts University in Boston , dedicated to researching drug development . It was established in 1976 by American physician Louis Lasagna . [ 1 ] The Center develops and publishes information to help researchers,... | https://en.wikipedia.org/wiki/Tufts_Center_for_the_Study_of_Drug_Development |
The Tulip System I is a 16-bit personal computer based on the Intel 8086 and made by Tulip Computers , formerly an import company for the Exidy Sorcerer , called Compudata Systems . [ 1 ] [ 2 ] [ 3 ]
Tulip System I is based around the Intel 8086 microprocessor with a 16-bit architecture, running at 8 MHz, almost twice... | https://en.wikipedia.org/wiki/Tulip_System-1 |
The Tumalo Irrigation Project was a privately funded corporation begun to provide water to late-19th century farms in the area of Tumalo Creek , Oregon . [ 1 ] The Three Sisters Irrigation Company and its successors owned and managed the project, under the provisions of the Carey Act . Controversy arose when corporate ... | https://en.wikipedia.org/wiki/Tumalo_Irrigation_Project |
A tumble flap is a flap housed in the intake area of many modern automotive gasoline engines to produce a swirl at right-angles to the cylinder axis. This swirling motion improves the air-fuel mixture and enhances power and torque, while at the same time lowering fuel consumption and decreasing emissions. [ 1 ] The fla... | https://en.wikipedia.org/wiki/Tumble_flap |
Tumor-homing bacteria are facultative or obligate anaerobic bacteria (capable of producing ATP when oxygen is absent or is destroyed in normal oxygen levels) that are able to target cancerous cells in the body, suppress tumor growth and survive in the body for a long time even after the infection. When this type of bac... | https://en.wikipedia.org/wiki/Tumor-homing_bacteria |
Tumor-informed minimal residual disease (MRD) testing , often abbreviated as tiMRD , is a highly sensitive, personalized approach for detecting and monitoring minimal residual disease (MRD) in cancer patients. It primarily analyzes circulating tumor DNA (ctDNA) — small fragments of DNA shed from tumor cells into the bl... | https://en.wikipedia.org/wiki/Tumor-informed_minimal_residual_disease |
Tumor M2-PK is a synonym for the dimeric form of the pyruvate kinase isoenzyme type M2 ( PKM2 ), a key enzyme within tumor metabolism . Tumor M2-PK can be elevated in many tumor types, rather than being an organ-specific tumor marker such as PSA . Increased stool (fecal) levels are being investigated as a method of scr... | https://en.wikipedia.org/wiki/Tumor_M2-PK |
A tumor marker is a biomarker that can be used to indicate the presence of cancer or the behavior of cancers (measure progression or response to therapy). They can be found in bodily fluids or tissue . Markers can help with assessing prognosis, surveilling patients after surgical removal of tumors, and even predicting ... | https://en.wikipedia.org/wiki/Tumor_marker |
The study of the tumor metabolism , also known as tumor metabolome describes the different characteristic metabolic changes in tumor cells. The characteristic attributes [ 2 ] of the tumor metabolome are high glycolytic enzyme activities, the expression of the pyruvate kinase isoenzyme type M2, increased channeling of ... | https://en.wikipedia.org/wiki/Tumor_metabolome |
Tumour mutational burden (abbreviated as TMB ) is a genetic characteristic of tumorous tissue that can be informative to cancer research and treatment. It is defined as the number of non-inherited mutations per million bases (Mb) of investigated genomic sequence, [ 1 ] and its measurement has been enabled by next gener... | https://en.wikipedia.org/wiki/Tumor_mutational_burden |
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Tumor necrosis factor receptor 2 ( TNFR2 ), also known as tumor necrosis factor receptor superfamily member 1B ( TNFRSF1B ) and CD120b , is one of two membrane receptors that binds tumor necrosis f... | https://en.wikipedia.org/wiki/Tumor_necrosis_factor_receptor_2 |
Tuna Altınel is a Turkish mathematician , born February 12, 1966, in Istanbul , who has worked at the University Lyon 1 in France since 1996. [ 1 ] He is a specialist in group theory and mathematical logic . With Alexandre Borovik and Gregory Cherlin , he proved a major case of the Cherlin–Zilber conjecture . [ 2 ]
Al... | https://en.wikipedia.org/wiki/Tuna_Altınel |
A tunable metamaterial is a metamaterial with a variable response to an incident electromagnetic wave. This includes remotely controlling how an incident electromagnetic wave (EM wave) interacts with a metamaterial. This translates into the capability to determine whether the EM wave is transmitted, reflected, or abs... | https://en.wikipedia.org/wiki/Tunable_metamaterial |
Tunable resistive pulse sensing ( TRPS ) is a single-particle technique used to measure the size, concentration and zeta potential of particles as they pass through a size-tunable nanopore . [ 1 ] [ 2 ]
The technique adapts the principle of resistive pulse sensing , which monitors current flow through an aperture, com... | https://en.wikipedia.org/wiki/Tunable_resistive_pulse_sensing |
A tuned radio frequency receiver (or TRF receiver ) is a type of radio receiver that is composed of one or more tuned radio frequency (RF) amplifier stages followed by a detector ( demodulator ) circuit to extract the audio signal and usually an audio frequency amplifier. This type of receiver was popular in the 1920s.... | https://en.wikipedia.org/wiki/Tuned_radio_frequency_receiver |
In electronics and radio , a tuner is a type of receiver subsystem that receives RF transmissions, such as AM or FM broadcasts , and converts the selected carrier frequency into a form suitable for further processing or output, such as to an amplifier or loudspeaker . A tuner is also a standalone home audio product, co... | https://en.wikipedia.org/wiki/Tuner_(radio) |
Tungsten disilicide ( WSi 2 ) is an inorganic compound, a silicide of tungsten . It is an electrically conductive ceramic material.
Tungsten disilicide can react violently with substances such as strong acids , fluorine , oxidizers , and interhalogens .
It is used in microelectronics as a contact material, with resis... | https://en.wikipedia.org/wiki/Tungsten_disilicide |
Tungsten(VI) fluoride , also known as tungsten hexafluoride , is an inorganic compound with the formula W F 6 . It is a toxic, corrosive, colorless gas, with a density of about 13 kg/m 3 (22 lb/cu yd) (roughly 11 times heavier than air). [ 2 ] [ 3 ] It is the densest known gas under standard ambient temperature and pre... | https://en.wikipedia.org/wiki/Tungsten_hexafluoride |
A tunnel is an underground or undersea passageway. It is dug through surrounding soil, earth or rock, or laid under water, and is usually completely enclosed except for the two portals common at each end, though there may be access and ventilation openings at various points along the length. A pipeline differs signific... | https://en.wikipedia.org/wiki/Tunnel |
The Tunnel and Reservoir Plan (abbreviated TARP and more commonly known as the Deep Tunnel Project or the Chicago Deep Tunnel ) is a large civil engineering project that aims to reduce flooding in the metropolitan Chicago area, and to reduce the harmful effects of flushing raw sewage into Lake Michigan by diverting sto... | https://en.wikipedia.org/wiki/Tunnel_and_Reservoir_Plan |
A tunnel cluster , more formally tunnel cluster of the cervix and cervical tunnel cluster , is a benign group of dilated endocervical glands in the cervix .
It is significant only in that it can be confused for a malignancy, i.e. cancer . [ 1 ]
This article related to pathology is a stub . You can help Wikipedia by e... | https://en.wikipedia.org/wiki/Tunnel_cluster |
A tunnel finisher is a machine that removes wrinkles from garments and is often used in the textile industry . As with other industrial pressing equipment, this machine is employed to improve the quality and look of a textile product. [ 1 ] It has a chamber called a "tunnel" and includes a conveyor fed unit through whi... | https://en.wikipedia.org/wiki/Tunnel_finisher |
Tunnel injection is a field electron emission effect; specifically a quantum process called Fowler–Nordheim tunneling , whereby charge carriers are injected to an electric conductor through a thin layer of an electric insulator. [ 1 ]
It is used to program NAND flash memory . The process used for erasing is called tun... | https://en.wikipedia.org/wiki/Tunnel_injection |
In physics , tunnel ionization is a process in which electrons in an atom (or a molecule ) tunnel through the potential barrier and escape from the atom (or molecule). In an intense electric field , the potential barrier of an atom (molecule) is distorted drastically. Therefore, as the length of the barrier that electr... | https://en.wikipedia.org/wiki/Tunnel_ionization |
Tunnel magnetoresistance ( TMR ) is a magnetoresistive effect that occurs in a magnetic tunnel junction ( MTJ ), which is a component consisting of two ferromagnets separated by a thin insulator . If the insulating layer is thin enough (typically a few nanometres ), electrons can tunnel from one ferromagnet into the ot... | https://en.wikipedia.org/wiki/Tunnel_magnetoresistance |
The tunnel problem is a philosophical thought experiment first introduced by Jason Millar in 2014. It is a variation on the classic trolley problem designed to focus on the ethics of autonomous vehicles , as well as the question of who gets to decide how they react in life-and-death scenarios.
The tunnel problem is in... | https://en.wikipedia.org/wiki/Tunnel_problem |
Tunnel warfare refers to aspects of warfare relating to tunnels and other underground cavities.
It includes the construction of underground facilities in order to attack or defend, and the use of existing natural caves and artificial underground facilities for military purposes. Tunnels can be used to undermine fortif... | https://en.wikipedia.org/wiki/Tunnel_warfare |
A tunnel washer , also called a continuous batch washer , is an industrial washing machine designed specifically to handle heavy loads of laundry .
The screw is made of perforated metal, so items can progress through the washer in one direction, while water and washing chemicals move through in the opposite direction.... | https://en.wikipedia.org/wiki/Tunnel_washer |
In computer networks , a tunneling protocol is a communication protocol which allows for the movement of data from one network to another. They can, for example, allow private network communications to be sent across a public network (such as the Internet ), or for one network protocol to be carried over an incompatibl... | https://en.wikipedia.org/wiki/Tunneling_protocol |
In number theory , Tunnell's theorem gives a partial resolution to the congruent number problem , and under the Birch and Swinnerton-Dyer conjecture , a full resolution.
The congruent number problem asks which positive integers can be the area of a right triangle with all three sides rational . Tunnell's theorem rela... | https://en.wikipedia.org/wiki/Tunnell's_theorem |
In computer science and information theory , Tunstall coding is a form of entropy coding used for lossless data compression .
Tunstall coding was the subject of Brian Parker Tunstall's PhD thesis in 1967, while at Georgia Institute of Technology. The subject of that thesis was "Synthesis of noiseless compression codes... | https://en.wikipedia.org/wiki/Tunstall_coding |
In mathematics , a tuple is a finite sequence or ordered list of numbers or, more generally, mathematical objects , which are called the elements of the tuple. An n -tuple is a tuple of n elements, where n is a non-negative integer . There is only one 0-tuple, called the empty tuple . A 1-tuple and a 2-tuple are common... | https://en.wikipedia.org/wiki/Tuple |
Tuple-versioning (also called point-in-time ) is a mechanism used in a relational database management system to store past states of a relation . Normally, only the current state is captured.
Using tuple-versioning techniques, typically two values for time are stored along with each tuple : a start time and an end ti... | https://en.wikipedia.org/wiki/Tuple-versioning |
Tupper's self-referential formula is a formula that visually represents itself when graphed at a specific location in the ( x , y ) plane.
The formula was defined by Jeff Tupper and appears as an example in his 2001 SIGGRAPH paper on reliable two-dimensional computer graphing algorithms. [ 1 ] This paper discusses met... | https://en.wikipedia.org/wiki/Tupper's_self-referential_formula |
Turbidimetric inhibition immuno assay (TINIA) is a type of immunoassay that uses turbidimetry as the measurement principle and is used for many commercial immunoassays , e.g. measurement of HbA1c %, [ 1 ] Digoxin etc. in whole blood sample in several commercial assays employ this principle.
This immunology article is ... | https://en.wikipedia.org/wiki/Turbidimetric_inhibition_immunoassay |
Turbidimetry (the name being derived from turbidity ) is the process of measuring the loss of intensity of transmitted light due to the scattering effect of particles suspended in it. Light is passed through a filter creating a light of known wavelength which is then passed through a cuvette containing a solution. A ph... | https://en.wikipedia.org/wiki/Turbidimetry |
Turbidity is the cloudiness or haziness of a fluid caused by large numbers of individual particles that are generally invisible to the naked eye , similar to smoke in air . The measurement of turbidity is a key test of both water clarity and water quality .
Fluids can contain suspended solid matter consisting of parti... | https://en.wikipedia.org/wiki/Turbidity |
A turbidity current is most typically an underwater current of usually rapidly moving, sediment-laden water moving down a slope; although current research (2018) indicates that water-saturated sediment may be the primary actor in the process. [ 1 ] Turbidity currents can also occur in other fluids besides water.
Resea... | https://en.wikipedia.org/wiki/Turbidity_current |
A turbidostat is a continuous microbiological culture device, similar to a chemostat or an auxostat , which has feedback between the turbidity of the culture vessel and the dilution rate. [ 1 ] [ 2 ] The theoretical relationship between growth in a chemostat and growth in a turbidostat is somewhat complex, in part beca... | https://en.wikipedia.org/wiki/Turbidostat |
A turbine blade is a radial aerofoil mounted in the rim of a turbine disc and which produces a tangential force which rotates a turbine rotor. [ 2 ] Each turbine disc has many blades. [ 3 ] As such they are used in gas turbine engines and steam turbines . The blades are responsible for extracting energy from the high t... | https://en.wikipedia.org/wiki/Turbine_blade |
Each turbine in a gas turbine engine has an operating map. Complete maps are either based on turbine rig test results or are predicted by a special computer program. Alternatively, the map of a similar turbine can be suitably scaled.
A turbine map [ 1 ] shows lines of percent corrected speed (based on a reference valu... | https://en.wikipedia.org/wiki/Turbine_map |
Turboswing is a type of grease filter used in kitchen ventilation to remove grease particles from the air. It is typically installed inside the extractor hoods of restaurant kitchens. Its operation is based on a rotating filtering medium. [ 1 ] [ 2 ]
The main difference between turboswing and most common filters is th... | https://en.wikipedia.org/wiki/TurboSwing |
A turboexpander , also referred to as a turbo-expander or an expansion turbine , is a centrifugal or axial-flow turbine , through which a high- pressure gas is expanded to produce work that is often used to drive a compressor or generator . [ 1 ] [ 2 ] [ 3 ]
Because work is extracted from the expanding high-pressure g... | https://en.wikipedia.org/wiki/Turboexpander |
Turbomachinery , in mechanical engineering , describes machines that transfer energy between a rotor and a fluid , including both turbines and compressors . While a turbine transfers energy from a fluid to a rotor, a compressor transfers energy from a rotor to a fluid. [ 1 ] [ 2 ] It is an important application of flui... | https://en.wikipedia.org/wiki/Turbomachinery |
A Turbo mixer , also known as a high speed mixer or a tank mixer , is a type of industrial mixer that uses PVC for mixing raw materials to form a free-flowing powder blend.
It includes a cylindrical tank with a mixing tool assembled on the bottom that typically operates at a peripheral speed of between 20 and 50 m/s, ... | https://en.wikipedia.org/wiki/Turbomixer |
In fluid dynamics , turbulence or turbulent flow is fluid motion characterized by chaotic changes in pressure and flow velocity . It is in contrast to laminar flow , which occurs when a fluid flows in parallel layers with no disruption between those layers. [ 2 ]
Turbulence is commonly observed in everyday phenomena ... | https://en.wikipedia.org/wiki/Turbulence |
The turbulent Prandtl number ( Pr t ) is a non-dimensional term defined as the ratio between the momentum eddy diffusivity and the heat transfer eddy diffusivity. It is useful for solving the heat transfer problem of turbulent boundary layer flows. The simplest model for Pr t is the Reynolds analogy , which yields a ... | https://en.wikipedia.org/wiki/Turbulent_Prandtl_number |
Turbulent diffusion is the transport of mass, heat, or momentum within a system due to random and chaotic time dependent motions. [ 1 ] It occurs when turbulent fluid systems reach critical conditions in response to shear flow , which results from a combination of steep concentration gradients, density gradients, and h... | https://en.wikipedia.org/wiki/Turbulent_diffusion |
Turdus Solitarius ( Latin for solitary thrush ) was a constellation created by French astronomer Pierre Charles Le Monnier in 1776 from stars of Hydra 's tail. It was named after the Rodrigues solitaire , an extinct flightless bird that was endemic to the island of Rodrigues East of Madagascar in the Indian Ocean. [ 1 ... | https://en.wikipedia.org/wiki/Turdus_Solitarius |
Ahmet Turgay Uzer is a Turkish-born American theoretical physicist and nature photographer .
Regents' Professor Emeritus at Georgia Institute of Technology following Joseph Ford (physicist) . He has contributed in the field of atomic and molecular physics, nonlinear dynamics and chaos significantly. [ 1 ] His research... | https://en.wikipedia.org/wiki/Turgay_Uzer |
Turgor pressure is the force within the cell that pushes the plasma membrane against the cell wall . [ 1 ]
It is also called hydrostatic pressure , and is defined as the pressure in a fluid measured at a certain point within itself when at equilibrium. [ 2 ] Generally, turgor pressure is caused by the osmotic flow of ... | https://en.wikipedia.org/wiki/Turgor_pressure |
Turin Polytechnic University in Tashkent ( Uzbek : Toshkent shahridagi Turin politexnika universiteti (TTPU) ) is a non-profit public higher education institution in Uzbekistan. [ 1 ] Turin Polytechnic University in Tashkent was established in 2009 in a partnership with Politecnico di Torino , Italy. TTPU's main object... | https://en.wikipedia.org/wiki/Turin_Polytechnic_University_in_Tashkent |
Turing's proof is a proof by Alan Turing , first published in November 1936 [ 1 ] with the title " On Computable Numbers, with an Application to the Entscheidungsproblem ". It was the second proof (after Church's theorem ) of the negation of Hilbert 's Entscheidungsproblem ; that is, the conjecture that some purely mat... | https://en.wikipedia.org/wiki/Turing's_proof |
The Turing Talk , previously known as the Turing Lecture , [ 1 ] is an annual award lecture delivered by a noted speaker on the subject of Computer Science . Sponsored and co-hosted by the Institution of Engineering and Technology (IET) [ 2 ] and the British Computer Society , [ 3 ] the talk has been delivered at diffe... | https://en.wikipedia.org/wiki/Turing_Talk |
The Turing pattern is a concept introduced by English mathematician Alan Turing in a 1952 paper titled " The Chemical Basis of Morphogenesis " which describes how patterns in nature , such as stripes and spots, can arise naturally and autonomously from a homogeneous, uniform state. [ 1 ] [ 2 ] The pattern arises due to... | https://en.wikipedia.org/wiki/Turing_pattern |
The greater Turkana Basin in East Africa (mainly northwestern Kenya and southern Ethiopia , smaller parts of eastern Uganda and southeastern South Sudan ) determines a large endorheic basin , a drainage basin with no outflow centered around the north-southwards directed Gregory Rift system in Kenya and southern Ethiopi... | https://en.wikipedia.org/wiki/Turkana_Basin |
The Turkish Space Agency ( Turkish : Türkiye Uzay Ajansı , TUA ) is a government agency for national aerospace research as a part of the space program of Turkey . It was formally established by a presidential decree on 13 December 2018. [ 3 ] [ 4 ]
Headquartered in Ankara , [ 5 ] the agency is subordinated to the Mini... | https://en.wikipedia.org/wiki/Turkish_Space_Agency |
In aviation , the turn and slip indicator ( T/S , a.k.a. turn indicator and turn and bank indicator ) and the turn coordinator (TC) variant are essentially two aircraft flight instruments in one device. One indicates the rate of turn, or the rate of change in the aircraft's heading; the other part indicates whether the... | https://en.wikipedia.org/wiki/Turn_and_slip_indicator |
A routing algorithm decides the path followed by a packet from the source to destination routers in a network . An important aspect to be considered while designing a routing algorithm is avoiding a deadlock . Turn restriction routing [ 1 ] is a routing algorithm for mesh -family of topologies which avoids deadlocks by... | https://en.wikipedia.org/wiki/Turn_restriction_routing |
A turnaround ( TAR ) is a scheduled event wherein an entire process unit of an industrial plant, such as a refinery , petrochemical plant, power plant , or paper mill , is taken offstream for an extended period for work to be carried out. Turnaround is a blanket term that encompasses more specific terms such as I&Ts (i... | https://en.wikipedia.org/wiki/Turnaround_(refining) |
Turndown ratio refers to the width of the operational range of a device, and is defined as the ratio of the maximum capacity to minimum capacity. For example, a device with a maximum output of 10 units and a minimum output of 2 units has a turndown ratio of 5. The term is commonly used with measurement devices and comb... | https://en.wikipedia.org/wiki/Turndown_ratio |
The versine or versed sine is a trigonometric function found in some of the earliest ( Sanskrit Aryabhatia , [ 1 ] Section I) trigonometric tables . The versine of an angle is 1 minus its cosine .
There are several related functions, most notably the coversine and haversine . The latter, half a versine, is of particul... | https://en.wikipedia.org/wiki/Turned_chord |
The sclerometer , also known as the Turner-sclerometer (from Ancient Greek : σκληρός meaning "hard"), is an instrument used by metallurgists , material scientists and mineralogists to measure the scratch hardness of materials. It was invented in 1896 by Thomas Turner (1861–1951), the first Professor of metallurgy in Br... | https://en.wikipedia.org/wiki/Turner-sclerometer |
The Turner angle Tu , introduced by Ruddick(1983) [ 2 ] and named after J. Stewart Turner , is a parameter used to describe the local stability of an inviscid water column as it undergoes double-diffusive convection . The temperature and salinity attributes, which generally determine the water density , both respond to... | https://en.wikipedia.org/wiki/Turner_angle |
Turning assistant is an advanced driver-assistance system introduced in 2015.
The system monitors opposing traffic when turning across traffic at low speeds. In critical situation, it brakes the car. This is a common scenario at busy city crossings as well as on highways, where the speed limits are higher. [ citation ... | https://en.wikipedia.org/wiki/Turning_assistant |
The turning radius (alternatively, turning diameter or turning circle ) of a vehicle defines the minimum dimension (typically the radius or diameter ) of available space required for that vehicle to make a semi-circular U-turn without skidding . The Oxford English Dictionary describes turning circle as "the smallest ci... | https://en.wikipedia.org/wiki/Turning_radius |
A turnkey , [ 1 ] a turnkey project , or a turnkey operation (also spelled turn-key ) is a type of project that is constructed so that it can be sold to any buyer as a completed product. This is contrasted with build to order , where the constructor builds an item to the buyer's exact specifications, or when an incompl... | https://en.wikipedia.org/wiki/Turnkey |
Turntable stretch wrappers are a type of automatic and semi-automatic stretch wrapping system. A load is placed on a turntable , which rotates relative to the film roll , which is housed in a carriage attached to a vertical "mast" on which it may move up and down.
In the simplest turntable systems, stretch is achieve... | https://en.wikipedia.org/wiki/Turntable_stretch_wrapper |
A turret lathe is a form of metalworking lathe that is used for repetitive production of duplicate parts, which by the nature of their cutting process are usually interchangeable . It evolved from earlier lathes with the addition of the turret , which is an indexable toolholder that allows multiple cutting operations t... | https://en.wikipedia.org/wiki/Turret_lathe |
In mathematics, Turán's inequalities are some inequalities for Legendre polynomials found by Pál Turán ( 1950 ) (and first published by Szegö (1948) ). There are many generalizations to other polynomials, often called Turán's inequalities, given by (E. F. Beckenbach, W. Seidel & Otto Szász 1951 ) and other authors.
I... | https://en.wikipedia.org/wiki/Turán's_inequalities |
In graph theory , Turán's theorem bounds the number of edges that can be included in an undirected graph that does not have a complete subgraph of a given size. It is one of the central results of extremal graph theory , an area studying the largest or smallest graphs with given properties, and is a special case of the... | https://en.wikipedia.org/wiki/Turán's_theorem |
The Turán–Kubilius inequality is a mathematical theorem in probabilistic number theory . It is useful for proving results about the normal order of an arithmetic function . [ 1 ] : 305–308 The theorem was proved in a special case in 1934 by Pál Turán and generalized in 1956 and 1964 by Jonas Kubilius . [ 1 ] : 316
Thi... | https://en.wikipedia.org/wiki/Turán–Kubilius_inequality |
Tussock grasses or bunch grasses are a group of grass species in the family Poaceae . They usually grow as singular plants in clumps, tufts, hummocks, or bunches, rather than forming a sod or lawn , in meadows , grasslands , and prairies. As perennial plants, most species live more than one season. Tussock grasses ar... | https://en.wikipedia.org/wiki/Tussock_grass |
In mathematics, the Tutte homotopy theorem , introduced by Tutte ( 1958 ), generalises the concept of "path" from graphs to matroids , and states roughly that closed paths can be written as compositions of elementary closed paths, so that in some sense they are homotopic to the trivial closed path.
A matroid on a set ... | https://en.wikipedia.org/wiki/Tutte_homotopy_theorem |
In graph theory , the Tutte matrix A of a graph G = ( V , E ) is a matrix used to determine the existence of a perfect matching : that is, a set of edges which is incident with each vertex exactly once.
If the set of vertices is V = { 1 , 2 , … , n } {\displaystyle V=\{1,2,\dots ,n\}} then the Tutte matrix is an n -by... | https://en.wikipedia.org/wiki/Tutte_matrix |
The Tutte polynomial , also called the dichromate or the Tutte–Whitney polynomial , is a graph polynomial . It is a polynomial in two variables which plays an important role in graph theory . It is defined for every undirected graph G {\displaystyle G} and contains information about how the graph is connected. It is de... | https://en.wikipedia.org/wiki/Tutte_polynomial |
In the mathematical discipline of graph theory , the Tutte theorem , named after William Thomas Tutte , is a characterization of finite undirected graphs with perfect matchings . It is a special case of the Tutte–Berge formula .
The goal is to characterize all graphs that do not have a perfect matching. Start with the... | https://en.wikipedia.org/wiki/Tutte_theorem |
In the mathematical discipline of graph theory the Tutte–Berge formula is a characterization of the size of a maximum matching in a graph . It is a generalization of Tutte theorem on perfect matchings , and is named after W. T. Tutte (who proved Tutte's theorem) and Claude Berge (who proved its generalization).
The t... | https://en.wikipedia.org/wiki/Tutte–Berge_formula |
Tweakers (formerly called Tweakers.net ) is a Dutch technology website featuring news and information about hardware, software, games and the Internet. The name is derived from the verb " tweaking ", which is a word used to refer to optimisation of hardware.
Tweakers has grown substantially since its founding in 1998.... | https://en.wikipedia.org/wiki/Tweakers |
A twilight switch is an electronic component that allows the automatic activation of a lighting circuit when natural light drops in a given environment. Among a large number of uses, the most common is to enable automatic lighting of streets, roads, highways, roads, gardens, courtyards, etc., when sunlight drops below ... | https://en.wikipedia.org/wiki/Twilight_switch |
Twimight was an open source Android client for the social networking site Twitter . The client let users view in real time "tweets" or micro-blog posts on the Twitter website as well as publish their own.
In addition to being a fully functional, ad-free and open-source [ 1 ] Twitter client, Twimight allowed communicat... | https://en.wikipedia.org/wiki/Twimight |
Twins are two offspring produced by the same pregnancy . [ 1 ] Twins can be either monozygotic ('identical'), meaning that they develop from one zygote , which splits and forms two embryos , or dizygotic ('non-identical' or 'fraternal'), meaning that each twin develops from a separate egg and each egg is fertilized by ... | https://en.wikipedia.org/wiki/Twin |
Twin bridges are a set of two bridges running parallel to each other. A pair of twin bridges is often referred to collectively as a twin-span or dual-span bridge. Twin bridges are independent structures and each bridge has its own superstructure , substructure , and foundation . [ 1 ] Bridges of this type are often c... | https://en.wikipedia.org/wiki/Twin_bridges |
In data compression , twin vector quantization is related to vector quantization , but the speed of the quantization is doubled by the secondary vector analyzer.
By using a subdimensional vector space useless hyperspace will be destroyed in the process.
The formula for calculating the amount of destroyed hyperspace i... | https://en.wikipedia.org/wiki/Twin_vector_quantization |
Twine is a stand-alone device that uses sensors to detect parts of its environment and that connects to a Wi-Fi network to communicate. Rules loaded into the Twine can test for sensor conditions and, based on logic, send messages through email or SMS , make an HTTP request , or light a LED . [ 1 ] It can act as a data ... | https://en.wikipedia.org/wiki/Twine_(device) |
In molecular biology, a twintron is an intron -within-intron excised by sequential splicing reactions. A twintron is presumably formed by the insertion of a mobile intron into an existing intron.
Twintrons were discovered by Donald W. Copertino and Richard B. Hallick as a group II intron within another group II intron... | https://en.wikipedia.org/wiki/Twintron |
In differential geometry , the twist of a ribbon is its rate of axial rotation . Let a ribbon ( X , U ) {\displaystyle (X,U)} be composed of a space curve , X = X ( s ) {\displaystyle X=X(s)} , where s {\displaystyle s} is the arc length of X {\displaystyle X} , and U = U ( s ) {\displaystyle U=U(s)} a unit normal vect... | https://en.wikipedia.org/wiki/Twist_(differential_geometry) |
The Twist Compression Tester ("TCT") is a hydraulically operated bench-top apparatus used to evaluate the level of friction and/or wear between two materials under lubricated or non-lubricated conditions.
Under controlled conditions, a rotating annular specimen is brought into contact with a non-rotating flat specimen... | https://en.wikipedia.org/wiki/Twist_compression_tester |
In mathematics, the twisted Poincaré duality is a theorem removing the restriction on Poincaré duality to oriented manifolds . The existence of a global orientation is replaced by carrying along local information, by means of a local coefficient system .
Another version of the theorem with real coefficients features d... | https://en.wikipedia.org/wiki/Twisted_Poincaré_duality |
In mathematics, a twisted sheaf is a variant of a coherent sheaf . Precisely, it is specified by: an open covering in the étale topology U i , coherent sheaves F i over U i , a Čech 2-cocycle θ for G m {\displaystyle \mathbb {G} _{m}} on the covering U i as well as the isomorphisms
satisfying
The notion of twisted sh... | https://en.wikipedia.org/wiki/Twisted_sheaf |
Twister OS (Twister for short) is a 32-bit Operating System created by Pi Labs for the Raspberry Pi single board computer originally, with a x86_64 PC version released a few months later. [ 1 ] [ 2 ] Twister is meant to be a general-purpose OS that is familiar or nostalgic to users. Twister is based on Raspberry Pi OS ... | https://en.wikipedia.org/wiki/Twister_OS |
The Twister supersonic separator is a compact tubular device which is used for removing water and/or hydrocarbon dewpointing of natural gas . [ 1 ] [ 2 ] The principle of operation is similar to the near isentropic Brayton cycle of a turboexpander. The gas is accelerated to supersonic velocities within the tube using... | https://en.wikipedia.org/wiki/Twister_supersonic_separator |
Twistronics (from twist and electronics ) is the study of how the angle (the twist) between layers of two-dimensional materials can change their electrical properties. [ 1 ] [ 2 ] Materials such as bilayer graphene have been shown to have vastly different electronic behavior, ranging from non-conductive to superconduct... | https://en.wikipedia.org/wiki/Twistronics |
Twitching motility is a form of crawling bacterial motility used to move over surfaces. Twitching is mediated by the activity of hair-like filaments called type IV pili which extend from the cell's exterior, bind to surrounding solid substrates, and retract, pulling the cell forwards in a manner similar to the action o... | https://en.wikipedia.org/wiki/Twitching_motility |
Two's complement is the most common method of representing signed (positive, negative, and zero) integers on computers, [ 1 ] and more generally, fixed point binary values. Two's complement uses the binary digit with the greatest value as the sign to indicate whether the binary number is positive or negative; when the ... | https://en.wikipedia.org/wiki/Two's_complement |
In quantum field theory , and in the significant subfields of quantum electrodynamics (QED) and quantum chromodynamics (QCD), the two-body Dirac equations (TBDE) of constraint dynamics provide a three-dimensional yet manifestly covariant reformulation of the Bethe–Salpeter equation [ 1 ] for two spin-1/2 particles. Suc... | https://en.wikipedia.org/wiki/Two-body_Dirac_equations |
In classical mechanics , the two-body problem is to calculate and predict the motion of two massive bodies that are orbiting each other in space. The problem assumes that the two bodies are point particles that interact only with one another; the only force affecting each object arises from the other one, and all other... | https://en.wikipedia.org/wiki/Two-body_problem |
The two-body problem in general relativity (or relativistic two-body problem ) is the determination of the motion and gravitational field of two bodies as described by the field equations of general relativity . Solving the Kepler problem is essential to calculate the bending of light by gravity and the motion of a pla... | https://en.wikipedia.org/wiki/Two-body_problem_in_general_relativity |
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