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P-type (other)
P-type or type P may refer to: P-type * P-type asteroid, type of asteroid * P-type semiconductor * MG P-type, a type of automobile * P-type ATPase, evolutionarily related ion and lipid pumps * P-Type (rapper), a South Korean rapper Type P * the Audi Type P, a car * a Type P thermocouple See also * For P (and Q) in propositional logic, see modus ponens In propositional logic, ''modus ponens'' (; MP), also known as ''modus ponendo ponens'' (Latin for "method of putting by placing") or implication elimination or affirming the antecedent, is a deductive argument form and rule of inference. ...
. {{disambiguation ...
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P-type Asteroid
P-type asteroids are asteroids that have low albedo and a featureless reddish spectrum. It has been suggested that they have a composition of organic rich silicates, carbon and anhydrous silicates, possibly with water ice in their interior. P-type asteroids are found in the outer asteroid belt and beyond. There are in the neighborhood of 33 known P-type asteroids, depending on the classification, including 46 Hestia, 65 Cybele, 76 Freia, 87 Sylvia, 153 Hilda, 476 Hedwig and, in some classifications, 107 Camilla. Taxonomy An early system of asteroid taxonomy was established in 1975 from the doctoral thesis work of David J. Tholen. This was based upon observations of a group of 110 asteroids. The U-type classification was used as a miscellaneous class for asteroids with unusual spectra that didn't fit into the C and S-type asteroid classifications. In 1976, some of these U-type asteroids with unusual moderate albedo levels were labeled as M-type. Around 1981, an offshoot of the ...
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P-type Semiconductor
An extrinsic semiconductor is one that has been '' doped''; during manufacture of the semiconductor crystal a trace element or chemical called a doping agent has been incorporated chemically into the crystal, for the purpose of giving it different electrical properties than the pure semiconductor crystal, which is called an ''intrinsic semiconductor''. In an extrinsic semiconductor it is these foreign dopant atoms in the crystal lattice that mainly provide the charge carriers which carry electric current through the crystal. The doping agents used are of two types, resulting in two types of extrinsic semiconductor. An ''electron donor'' dopant is an atom which, when incorporated in the crystal, releases a mobile conduction electron into the crystal lattice. An extrinsic semiconductor which has been doped with electron donor atoms is called an n-type semiconductor, because the majority of charge carriers in the crystal are negative electrons. An ''electron acceptor'' dopant is ...
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MG P-type
The MG P-type is a sports car that was produced by MG from 1934 to 1936. This 2-door sports car used an updated version of the Wolseley Motors-designed and made overhead camshaft, crossflow engine, used in the 1928 Morris Minor and previously fitted in the J-type Midget of 1932 to 1934, driving the rear wheels through a four-speed non-synchromesh gearbox. The chassis was a strengthened and slightly longer version of that used in the J-type with suspension by half-elliptic springs all round with rigid front and rear axles. Steering was initially by a Marles Weller and later a Bishop Cam system. The two-seat car had a wheelbase of 87 inches (2210 mm) and a track of . Most cars were open two-seaters, but streamlined Airline coupé bodies were also made. The P-type was also available as a four-seater, a car that suffered from a lack of power and poor rear ground clearance. Whereas J, K and L-type MGs differentiated between versions with the use of numbers, with 1 indicat ...
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P-type ATPase
The P-type ATPases, also known as E1-E2 ATPases, are a large group of evolutionarily related ion and lipid pumps that are found in bacteria, archaea, and eukaryotes. P-type ATPases are α-helical bundle primary transporters named based upon their ability to catalyze auto- (or self-) phosphorylation (hence P) of a key conserved aspartate residue within the pump and their energy source, adenosine triphosphate (ATP). In addition, they all appear to interconvert between at least two different conformations, denoted by E1 and E2. P-type ATPases fall under the P-type ATPase (P-ATPase) SuperfamilyTC# 3.A.3 which, as of early 2016, includes 20 different protein families. Most members of this transporter superfamily catalyze cation uptake and/or efflux, however one subfamily, the flippases,TC# 3.A.3.8 is involved in flipping phospholipids to maintain the asymmetric nature of the biomembrane. In humans, P-type ATPases serve as a basis for nerve impulses, relaxation of muscles, secretion a ...
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P-Type (rapper)
Kang Jin-pil (Hangul: 강진필), better known by the stage name P-Type (Hangul: 피타입), is a South Korean rapper. He began his career as an underground rapper in the 1990s and released his debut studio album, ''Heavy Bass'', in 2004. He gained mainstream attention after appearing on the reality TV shows ''Show Me the Money 4'' and ''Show Me the Money 6 The sixth season of the series Show Me the Money (South Korean TV series), Show Me the Money, known as Show Me the Money 6 (also referred to as SMTM6), premiered on June 30, 2017 and ended on September 1, 2017. It is on broadcast every Friday at ...'', in 2015 and 2017, respectively. Discography Studio albums Singles Filmography Television References {{authority control South Korean male rappers Show Me the Money (South Korean TV series) contestants Brand New Music artists ...
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Audi Type P
The Audi Type P was a small two-door sedan/saloon car introduced by Audi in 1931. It was discontinued by 1932. History Jørgen Skafte Rasmussen who had purchased Audiwerke AG in 1928 was concerned that the Audi Zwickau plant was badly underutilized because demand for the expensive luxury cars that Audi produced was still restricted by the economic contraction that had followed the 1929 Stock-market crashes. The other company owned by Rasmussen was Zschopauer Motorenwerke with its brand DKW, which had in 1929 introduced the small rear-wheel drive DKW Typ 4=8. Zschopauer Motorenwerke was the nation's largest producer of motor-bikes, and used a motor-bike style two-stroke engine in their own small cars. Rasmussen became persuaded that the then noisy and lumpy two-stroke engines might be deterring customers: his short-term solution was the Audi Type P which combined the body of the DKW Typ 4=8 with a four-stroke 1,122 cc engine. Rasmussen avoided time as well as development and ...
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Thermocouple
A thermocouple, also known as a "thermoelectrical thermometer", is an electrical device consisting of two dissimilar electrical conductors forming an electrical junction. A thermocouple produces a temperature-dependent voltage as a result of the Seebeck effect, and this voltage can be interpreted to measure temperature. Thermocouples are widely used as temperature sensors. Commercial thermocouples are inexpensive, interchangeable, are supplied with standard connectors, and can measure a wide range of temperatures. In contrast to most other methods of temperature measurement, thermocouples are self powered and require no external form of excitation. The main limitation with thermocouples is accuracy; system errors of less than one degree Celsius (°C) can be difficult to achieve. Thermocouples are widely used in science and industry. Applications include temperature measurement for kilns, gas turbine exhaust, diesel engines, and other industrial processes. Thermocouples are also ...
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