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TR
TR or tr may stand for Arts and entertainment Gaming * Tomb Raider, a video game franchise * Terminal Reality, an American video game developer * A currency in online game '' TalesRunner'' * Terran Republic (''PlanetSide''), a faction in the video game series ''PlanetSide'' Music * Korg TR, a variant of the Korg Triton music workstation synthesizer * Trill, notation for musical ornament * TR-808, TR-909 etc., 1980s Roland drum machines Businesses and organizations * Scoot, IATA code since 2017 * Tiger Airways, IATA code between 2003 and 2017 * Tomahawk Railway, reporting mark * Transbrasil, IATA airline code until 2001 * Team Rubicon, commonly used abbreviation * Talyllyn Railway, a Welsh railway * Thomson Reuters, a Canadian multinational media conglomerate * Texas Roadhouse, restaurant chain in the United States * Tokyu Railways. See Tokyu Corporation. Language * Tr, a digraph * Turkish language (ISO 639 alpha-1 code "tr") People * Theodore Roosevelt, the ...
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Turkey
Turkey ( tr, Türkiye ), officially the Republic of Türkiye ( tr, Türkiye Cumhuriyeti, links=no ), is a list of transcontinental countries, transcontinental country located mainly on the Anatolia, Anatolian Peninsula in Western Asia, with a East Thrace, small portion on the Balkans, Balkan Peninsula in Southeast Europe. It shares borders with the Black Sea to the north; Georgia (country), Georgia to the northeast; Armenia, Azerbaijan, and Iran to the east; Iraq to the southeast; Syria and the Mediterranean Sea to the south; the Aegean Sea to the west; and Greece and Bulgaria to the northwest. Cyprus is located off the south coast. Turkish people, Turks form the vast majority of the nation's population and Kurds are the largest minority. Ankara is Turkey's capital, while Istanbul is its list of largest cities and towns in Turkey, largest city and financial centre. One of the world's earliest permanently Settler, settled regions, present-day Turkey was home to important Neol ...
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Theodore Roosevelt
Theodore Roosevelt Jr. ( ; October 27, 1858 – January 6, 1919), often referred to as Teddy or by his initials, T. R., was an American politician, statesman, soldier, conservationist, naturalist, historian, and writer who served as the 26th president of the United States from 1901 to 1909. He previously served as the 25th vice president of the United States, vice president under President William McKinley from March to September 1901 and as the 33rd governor of New York from 1899 to 1900. Assuming the presidency after Assassination of William McKinley, McKinley's assassination, Roosevelt emerged as a leader of the History of the Republican Party (United States), Republican Party and became a driving force for United States antitrust law, anti-trust and Progressive Era, Progressive policies. A sickly child with debilitating asthma, he overcame his health problems as he grew by embracing The Strenuous Life, a strenuous lifestyle. Roosevelt integrated his exuberant personalit ...
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Tiger Airways
Tiger Airways Singapore Pte Ltd, operating as Tigerair, was a budget airline headquartered in Singapore. It operated services to regional destinations in Southeast Asia, Bangladesh, Taiwan, China and India from its main base at Singapore Changi Airport. It was founded as an independent airline in 2003, and was listed on the Singapore Stock Exchange under the Tiger Airways Holdings name in 2010. In October 2014, parent company Tiger Airways Holdings became a subsidiary of the SIA Group, who took a 56% ownership stake. On 18 May 2016, Singapore Airlines established ''Budget Aviation Holdings'', a holding company to own and manage its budget airlines Scoot and ''Tiger Airways'' following the delisting of Tiger Airways from the Singapore Stock Exchange. Tigerair merged with Scoot on 25 July 2017, operating under the Scoot brand. History Establishment Tiger Airways Singapore was incorporated on 12 December 2003 and began ticket sales on 31 August 2004. It has its head office in th ...
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Thomson Reuters
Thomson Reuters Corporation ( ) is a Canadian multinational media conglomerate. The company was founded in Toronto, Ontario, Canada, where it is headquartered at the Bay Adelaide Centre. Thomson Reuters was created by the Thomson Corporation's purchase of the British company Reuters Group in April 2008. It is majority-owned by The Woodbridge Company, a holding company for the Thomson family. History Thomson Corporation The forerunner of the Thomson company was founded by Roy Thomson in 1934 in Ontario, as the publisher of ''The Timmins Daily Press''. In 1953, Thomson acquired the ''Scotsman'' newspaper and moved to Scotland the following year. He consolidated his media position in Scotland in 1957, when he won the franchise for Scottish Television. In 1959, he bought the Kemsley Group, a purchase that eventually gave him control of the '' Sunday Times''. He separately acquired the ''Times'' in 1967. He moved into the airline business in 1965, when he acquired Britanni ...
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Tripura
Tripura (, Bengali: ) is a state in Northeast India. The third-smallest state in the country, it covers ; and the seventh-least populous state with a population of 36.71 lakh ( 3.67 million). It is bordered by Assam and Mizoram to the east and by Bangladesh to the north, south and west. Tripura is divided into 8 districts and 23 sub-divisions, where Agartala is the capital and the largest city in the state. Tripura has 19 different tribal communities with a majority of the Bengali population. Bengali, English and Kokborok are the state's official languages. The area of modern Tripura — ruled for several centuries by the Manikya Dynasty — was part of the Tripuri Kingdom (also known as Hill Tippera). It became a princely state under the British Raj during its tenure, and acceded to independent India in 1947. It merged with India in 1949 and was designated as a 'Part C State' ( union territory). It became a full-fledged state of India in 1972. Tripura lies in a geographic ...
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Tomb Raider
''Tomb Raider'', also known as ''Lara Croft: Tomb Raider'' from 2001 to 2008, is a media franchise that originated with an action-adventure video game series created by British gaming company Core Design. Formerly owned by Eidos Interactive, then by Square Enix Europe after Square Enix's acquisition of Eidos in 2009, the franchise focuses on the fictional British archaeologist Lara Croft, who travels around the world searching for lost artefacts and infiltrating dangerous tombs and ruins. Gameplay generally focuses on exploration of environments, solving puzzles, navigating hostile environments filled with traps, and fighting enemies. Additional media has been developed for the franchise in the form of film adaptations, comics and novels. Development of the original ''Tomb Raider'' game began in 1994; it was released two years later. Its critical and commercial success prompted Core Design to develop a new game annually for the next four years, which put a strain on staff. The ...
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Turkish Language
Turkish ( , ), also referred to as Turkish of Turkey (''Türkiye Türkçesi''), is the most widely spoken of the Turkic languages, with around 80 to 90 million speakers. It is the national language of Turkey and Northern Cyprus. Significant smaller groups of Turkish speakers also exist in Iraq, Syria, Germany, Austria, Bulgaria, North Macedonia, Greece, the Caucasus, and other parts of Europe and Central Asia. Cyprus has requested the European Union to add Turkish as an official language, even though Turkey is not a member state. Turkish is the 13th most spoken language in the world. To the west, the influence of Ottoman Turkish—the variety of the Turkish language that was used as the administrative and literary language of the Ottoman Empire—spread as the Ottoman Empire expanded. In 1928, as one of Atatürk's Reforms in the early years of the Republic of Turkey, the Ottoman Turkish alphabet was replaced with a Latin alphabet. The distinctive characteristics of the Turk ...
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Tr (Unix)
tr is a command in Unix, Plan 9, Inferno, and Unix-like operating systems. It is an abbreviation of ''translate'' or ''transliterate'', indicating its operation of replacing or removing specific characters in its input data set. Overview The utility reads a byte stream from its standard input and writes the result to the standard output. As arguments, it takes two sets of characters (generally of the same length), and replaces occurrences of the characters in the first set with the corresponding elements from the second set. For example, tr 'abcd' 'jkmn' maps all characters ''a'' to ''j'', ''b'' to ''k'', ''c'' to ''m'', and ''d'' to ''n''. The character set may be abbreviated by using character ranges. The previous example could be written: tr 'a-d' 'jkmn' In POSIX-compliant versions of tr, the set represented by a character range depends on the locale's collating order, so it is safer to avoid character ranges in scripts that might be executed in a locale different fro ...
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Taxonomic Rank
In biological classification, taxonomic rank is the relative level of a group of organisms (a taxon) in an ancestral or hereditary hierarchy. A common system consists of species, genus, family (biology), family, order (biology), order, class (biology), class, phylum (biology), phylum, kingdom (biology), kingdom, domain (biology), domain. While older approaches to taxonomic classification were phenomenological, forming groups on the basis of similarities in appearance, organic structure and behaviour, methods based on genetic analysis have opened the road to cladistics. A given rank subsumes under it less general categories, that is, more specific descriptions of life forms. Above it, each rank is classified within more general categories of organisms and groups of organisms related to each other through inheritance of phenotypic trait, traits or features from common ancestors. The rank of any ''species'' and the description of its ''genus'' is ''basic''; which means that to iden ...
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Physics Of Magnetic Resonance Imaging
The physics of magnetic resonance imaging (MRI) concerns fundamental physical considerations of MRI techniques and technological aspects of MRI devices. MRI is a medical imaging technique mostly used in radiology and nuclear medicine in order to investigate the anatomy and physiology of the body, and to detect pathologies including tumors, inflammation, neurological conditions such as stroke, disorders of muscles and joints, and abnormalities in the heart and blood vessels among others. Contrast agents may be injected intravenously or into a joint to enhance the image and facilitate diagnosis. Unlike CT and X-ray, MRI uses no ionizing radiation and is, therefore, a safe procedure suitable for diagnosis in children and repeated runs. Patients with specific non-ferromagnetic metal implants, cochlear implants, and cardiac pacemakers nowadays may also have an MRI in spite of effects of the strong magnetic fields. This does not apply on older devices, and details for medical professi ...
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Tricuspid Regurgitation
Tricuspid regurgitation (TR), also called tricuspid insufficiency, is a type of valvular heart disease in which the tricuspid valve of the heart, located between the right atrium and right ventricle, does not close completely when the right ventricle contracts (systole). TR allows the blood to flow backwards from the right ventricle to the right atrium, which increases the volume and pressure of the blood both in the right atrium and the right ventricle, which may increase central venous volume and pressure if the backward flow is sufficiently severe. The causes of TR are divided into ''hereditary'' and ''acquired''; and also ''primary'' and ''secondary''. Primary TR refers to a defect solely in the tricuspid valve, such as infective endocarditis; secondary TR refers to a defect in the valve as a consequence of some other pathology, such as left ventricular failure or pulmonary hypertension. The mechanism of TR is either a dilatation of the base (annulus) of the valve due to righ ...
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Thyroid Hormone Receptor
The thyroid hormone receptor (TR) is a type of nuclear receptor that is activated by binding thyroid hormone. TRs act as transcription factors, ultimately affecting the regulation of gene transcription and translation. These receptors also have non-genomic effects that lead to second messenger activation, and corresponding cellular response. Structure There are four domains that are present in all TRs. Two of these, the DNA-binding (DBD) and hinge domains, are involved in the ability of the receptor to bind hormone response elements( HREs). TRs also have a ligand binding domain (LBD) that allows them to bind to thyroid hormone with high affinity. The fourth domain is a transactivation domain which allows the receptor to bind other transcription factors. Function Thyroid hormone receptors play critical roles in the regulation of metabolism, heart rate, and development of organisms. These receptors are typically associated with retinoic acid receptors (RXR), forming heterod ...
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