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C2 (ADL)
C2 or a derivative (C-2, C2, etc.) may refer to: Mathematics and physics * ''C''2, one of the common notations for the cyclic group of order 2 * ''C''2 differentiability class * ''c''2 the square of the speed of light (in the mass–energy equivalence formula) Biology * C2 domain, a protein structural domain * C2 regulatory sequence for the insulin gene * Apolipoprotein C2, a human apolipoprotein * In human anatomy, C2 may refer to: ** Cervical vertebra 2, the axis, one of the cervical vertebrae of the vertebral column ** Cervical spinal nerve 2 * Chlorophyll c2, a form of chlorophyll * Complement component 2 * Procyanidin C2, a plant phenolic compound * Prodelphinidin C2, a plant phenolic compound * Vitamin C2, a name sometimes used for Choline * the ATC code for ''Antihypertensives'', a subgroup of the Anatomical Therapeutic Chemical Classification System *C2 fragments, one of the types of products of catabolism pathways * Haplogroup C-M217, also known as C2, a Human Y-c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyclic Group
In group theory, a branch of abstract algebra in pure mathematics, a cyclic group or monogenous group is a group, denoted C''n'', that is generated by a single element. That is, it is a set of invertible elements with a single associative binary operation, and it contains an element ''g'' such that every other element of the group may be obtained by repeatedly applying the group operation to ''g'' or its inverse. Each element can be written as an integer power of ''g'' in multiplicative notation, or as an integer multiple of ''g'' in additive notation. This element ''g'' is called a ''generator'' of the group. Every infinite cyclic group is isomorphic to the additive group of Z, the integers. Every finite cyclic group of order ''n'' is isomorphic to the additive group of Z/''n''Z, the integers modulo ''n''. Every cyclic group is an abelian group (meaning that its group operation is commutative), and every finitely generated abelian group ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diatomic Carbon
Diatomic carbon (systematically named dicarbon and 1λ2,2λ2-ethene), is a green, gaseous inorganic chemical with the chemical formula C=C (also written 2or C2). It is kinetically unstable at ambient temperature and pressure, being removed through autopolymerisation. It occurs in carbon vapor, for example in electric arcs; in comets, stellar atmospheres, and the interstellar medium; and in blue hydrocarbon flames. Diatomic carbon is the second simplest form of carbon after atomic carbon, and is an intermediate participator in the genesis of fullerenes. Properties C2 is a component of carbon vapor. One paper estimates that carbon vapor is around 28% diatomic, but theoretically this depends on the temperature and pressure. Electromagnetic properties The electrons in diatomic carbon are distributed among the molecular orbitals according to the Aufbau principle to produce unique quantum states, with corresponding energy levels. The state with the lowest energy level, or ground s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Common European Framework Of Reference For Languages
The Common European Framework of Reference for Languages: Learning, Teaching, Assessment, abbreviated in English as CEFR or CEF or CEFRL, is a guideline used to describe achievements of learners of foreign languages across Europe and, increasingly, in other countries. The CEFR is also intended to make it easier for educational institutions and employers to evaluate the language qualifications of candidates for education admission or employment. Its main aim is to provide a method of learning, teaching, and assessing that applies to all languages in Europe. It was put together by the Council of Europe as the main part of the project "Language Learning for European Citizenship" between 1989 and 1996. In November 2001, a European Union Council Resolution recommended using the CEFR to set up systems of validation of language ability. The six reference levels (A1, A2, B1, B2, C1, C2) are becoming widely accepted as the European standard for grading an individual's language profici ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ISO 216
ISO 216 is an international standard for paper sizes, used around the world except in North America and parts of Latin America. The standard defines the "A", "B" and "C" series of paper sizes, including A4, the most commonly available paper size worldwide. Two supplementary standards, ISO 217 and ISO 269, define related paper sizes; the ISO 269 "C" series is commonly listed alongside the A and B sizes. All ISO 216, ISO 217 and ISO 269 paper sizes (except some envelopes) have the same aspect ratio, , within rounding to millimetres. This ratio has the unique property that when cut or folded in half widthways, the halves also have the same aspect ratio. Each ISO paper size is one half of the area of the next larger size in the same series. Dimensions of A, B and C series History The oldest known mention of the advantages of basing a paper size on an aspect ratio of is found in a letter written on 25 October 1786 by the German scientist Georg Christoph Lichtenberg to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nimrod NRA/C2
The Nimrod NRA/C2 was the only Group C racing car ever built by Nimrod Racing Automobiles in partnership with Aston Martin. It ran initially in 1982 in the World Endurance Championship before also joining the IMSA GT Championship. The final NRA/C2 would be retired in 1984 after the planned NRA/C3 replacement had been cancelled and the company went bankrupt. Development Beginning in 1981, Robin Hamilton hastily constructed a chassis for use as a test vehicle in preparation for competition in the 1982 season. This lone car, known as NRA/C1, was used to test design and mechanical features for the upcoming race car, the NRA/C2. For an engine, Aston Martin turned to their tuning arm Tickford for the development of a racing version of their production V8 engines seen in the V8 and V8 Vantage models. This engine, becoming known as "Development Prototype 1229" (DP1229), retained the same basic displacement of 5340 cc while being strengthened in order to handle the increased outp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BRDC C2 Championship
The BRDC C2 Championship (sometimes referred to as the British C2 Championship) was a short lived sports car racing series which ran from 1988 to 1990. The series was for Group C cars which fit into the smaller, less powerful, and cheaper C2 category. All races were run in the United Kingdom. The British Racing Drivers' Club ran the series during its lifetime. History Meant as a replacement for the dwindling Thundersports series, the C2 Championship would serve to bring international sports car racing seen in the World Sportscar Championship to Britain. By using the smaller C2 class only, the series was able to encourage more teams to enter not only due to the relatively low cost of the available cars, but also due to the lack of major automobile manufacturers to drive away competitors due to their dominance. This was also aided by the fact that there were already several British teams running C2 class cars on the international circuit. Although only seven cars would attend the op ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Group C2
Group C was a category of sports car racing introduced by the FIA in 1982 and continuing until 1993, with ''Group A'' for touring cars and ''Group B'' for GTs. It was designed to replace both Group 5 special production cars (closed top touring prototypes like Porsche 935) and Group 6 two-seat racing cars (open-top sportscar prototypes like Porsche 936). Group C was used in the FIA's World Endurance Championship (1982–1985), World Sports-Prototype Championship (1986–1990), World Sportscar Championship (1991–1992) and in the European Endurance Championship (1983 only). It was also used for other sports car racing series around the globe (All Japan Sports Prototype Championship, Supercup, Interserie). The final year for the class came in 1993. Broadly similar rules were used in the North American IMSA Grand Touring Prototype series ( GTP). History The roots of the Group C category lie in both FIA Group 6 and particularly in the GTP category introduced by the ACO at Le ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
C2 (classification)
In paralympic sport, C2 is a para-cycling classification. The UCI recommends this be coded as MC2 or WC2. Definition PBS defined this classification as "Riders with upper or lower limb impairments and moderate to severe neurological ." ''The Telegraph'' defined this classification in 2011 as "C 1–5: Athletes with cerebral palsy, limb impairments and ." Classification history Cycling first became a Paralympic sport at the 1988 Summer Paralympics. In September 2006, governance for para-cycling passed from the International Paralympic Committee's International Cycling Committee to UCI at a meeting in Switzerland. When this happened, the responsibility of classifying the sport also changed. At the Paralympic Games For the 2016 Summer Paralympics in Rio, the International Paralympic Committee had a zero classification at the Games policy. This policy was put into place in 2014, with the goal of avoiding last minute changes in classes that would negatively impact athlete traini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
C2 Radio Class
This is a list of broadcast station classes applicable in much of North America under international agreements between the United States, Canada and Mexico. Effective radiated power (ERP) and height above average terrain (HAAT) are listed unless otherwise noted. All radio and television stations within of the US-Canada or US-Mexico border must get approval by both the domestic and foreign agency. These agencies are Industry Canada/Canadian Radio-television and Telecommunications Commission (CRTC) in Canada, the Federal Communications Commission (FCC) in the US, and the Federal Telecommunications Institute (IFT) in Mexico. AM Station class descriptions All domestic (United States) AM stations are classified as A, B, C, or D. * A (formerly I) — clear-channel stations — 10 kW to 50 kW, 24 hours. **Class A stations are only protected within a radius of the transmitter site. **The old Class I was divided into three: Class I-A, I-B and I-N. NARBA distinguished ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
C2 Pylon
A transmission tower, also known as an electricity pylon or simply a pylon in British English and as a hydro tower in Canadian English, is a tall structure, usually a steel lattice tower, used to support an overhead power line. In electrical grids, they are generally used to carry high-voltage transmission lines that transport bulk electric power from generating stations to electrical substations; utility poles are used to support lower-voltage subtransmission and distribution lines that transport power from substations to electric customers. They come in a wide variety of shapes and sizes. Typical height ranges from , though the tallest are the towers of a span between the islands Jintang and Cezi in China's Zhejiang province. The longest span of any hydroelectric crossing ever built belongs to the powerline crossing of Ameralik fjord with a length of . In addition to steel, other materials may be used, including concrete and wood. There are four major categories of transm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
C2 Explosive
Plastic explosive is a soft and hand-moldable solid form of explosive material. Within the field of explosives engineering, plastic explosives are also known as putty explosives or blastics. Plastic explosives are especially suited for explosive demolition. Common plastic explosives include Semtex and C-4. The first manufactured plastic explosive was gelignite in 1875, invented by Alfred Nobel. Usage Plastic explosives are especially suited for explosive demolition of obstacles and fortifications by engineers, combat engineers and criminals as they can be easily formed into the best shapes for cutting structural members and have a high enough velocity of detonation and density for metal cutting work. An early use of plastic explosives was in the warhead of the Petard demolition mortar of the British Armoured Vehicle Royal Engineers (AVRE); said mortar was used to destroy concrete fortifications encountered during Operation Overlord (D-Day). The original use of Nobel 808 s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
C2 (Code Geass)
is the pseudonym of a fictional character in the '' Code Geass: Lelouch of the Rebellion'' franchise by Sunrise. With her real name kept from the audience, she first appeared in the 2006 initial anime season, and afterwards has appeared in many manga, OVA, anime, and video game spinoff. She is voiced by Yukana. Introduced as a captive human test subject of the villainous Holy Britannia Empire, C. C. is revealed to be an immortal young woman with special powers called the Geass. Sardonic, stubborn, and mysterious, she can give Geass powers to others, which she does to main protagonist Lelouch Lamperouge. She becomes an ally and protector of Lelouch, at times piloting a mech and leading the paramilitary group the Black Knights to do so. She later assists Lelouch at destroying other Geass users misusing their powers, including her former students, and supports the regime changes that follow. In the 2006 Anime Grand Prix, C.C. was awarded third place for most popular female ch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
