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B703 Road
B7, B.VII, B07 or B-7 may refer to: Vehicles and transportation * Alpina B7, a luxury sedan * B7 (New York City bus), serving Brooklyn * Bundesstraße 7, a German Bundesstraße (Federal Highway) * Bavarian B VII, an 1868 German experimental locomotive * DLR B07 stock, a passenger train on the Docklands Light Railway in London, UK * Norwegian railway carriages, NSB B7 (Class 7), Norwegian railway carriages * HMS B7, HMS ''B7'', a B-class submarine of the Royal Navy * Blackburn B-7, a British aircraft * Lohner B.VII, an aircraft * Douglas Y1B-7, a bomber of the United States Army Air Corps * UNI Airways (Taiwan) IATA airline designator * Boeing 777 * Bensen B-7, a 1955 United States small rotor kite * LNER Class B7, a class of British steam locomotives Science * B7 (protein), a protein in the immune system * HLA-B7, an HLA-B serotype * Vitamin B7, Vitamin B7, another name for biotin * A subclass of B-stellar classification, class stars * Boron-7 (B-7 or 7B), an isotope of boron Mat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alpina B7
The Alpina B7 Bi-Turbo, or Alpina B7, is the fifth generation of the high-performance full-size luxury car released by German automobile manufacturer Alpina. Based on the BMW 7 Series (G11), BMW 7 Series (G12), the B7 Bi-Turbo was introduced at the Geneva Motor Show#2016, 2016 Geneva Motor Show. Known as the B7 in North America, the car is the third B7 model to be imported to the United States. The Alpina B7 was discontinued in September 2022. B7 Bi-Turbo (2016–2019) Overview The B7 Bi-Turbo is based on the 750Li and uses a modified version of its 4.4-litre twin-turbocharged V8 engine designated the BMW N63, N63M30. The engine is modified by the addition of modified twin-scroll turbochargers having larger inlet and outer dimensions and new compressors for an increased boost pressure of , replacement of the standard pistons with high-strength MAHLE pistons, new NGK spark plugs, a new air-to-water intercooler making use of short charge air intake paths to feed air to the air inta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
B7 (protein)
B7 is a type of integral membrane protein found on activated antigen-presenting cells (APC) that, when paired with either a CD28 or CD152 (CTLA-4) surface protein on a T cell, can produce a costimulatory signal or a coinhibitory signal to enhance or decrease the activity of a MHC- TCR signal between the APC and the T cell, respectively. Binding of the B7 of APC to CTLA-4 of T-cells causes inhibition of the activity of T-cells. There are two major types of B7 proteins: B7-1 or CD80, and B7-2 or CD86. It is not known if they differ significantly from each other. So far CD80 is found on dendritic cells, macrophages, and activated B cells, CD86 (B7-2) on B cells. The proteins CD28 and CTLA-4 ( CD152) each interact with both B7-1 and B7-2. Costimulation There are several steps to activation of the immune system against a pathogen. The T-cell receptor must first interact with the Major histocompatibility complex (MHC) surface protein. The CD4 or CD8 proteins on the T-cell surface for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blake's 7
''Blake's 7'' is a British science fiction television programme produced by the BBC. Four series of thirteen 50-minute episodes were broadcast on BBC1 between 1978 and 1981. It was created by Terry Nation, who also wrote the first series, produced by David Maloney (series 1–3) and Vere Lorrimer (series 4), and the script editor throughout its run was Chris Boucher (writer), Chris Boucher, who wrote nine of its episodes. The main character for the first two series was Roj Blake, played by Gareth Thomas (actor), Gareth Thomas. ''Blake's 7'' was broadcast in 25 other countries. It had a low budget but featured many Trope (literature)#literature, tropes of space opera, such as Spacecraft, spaceships, robots, galactic empires and Extraterrestrials in fiction, aliens. Critical responses have been varied; some reviewers praised the programme for its dystopian themes, strong characterisation, ambiguous morality and pessimistic tone, as well as displaying an "enormous sense of fun", b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
B7 Baltic Islands Network
B7 Baltic Islands Network is a transnational cooperation between the local administrations or governments of seven islands in the Baltic Sea. Scope The network is made up of the local administrations or governments of the islands of Bornholm (Denmark), Gotland (Sweden), Hiiumaa (Estonia), Rügen (Germany), Saaremaa (Estonia), Åland (autonomous part of Finland) and Öland (Sweden Sweden, formally the Kingdom of Sweden, is a Nordic countries, Nordic country located on the Scandinavian Peninsula in Northern Europe. It borders Norway to the west and north, and Finland to the east. At , Sweden is the largest Nordic count ...). The network has two decision-making bodies; a "steering committee", which is the politically responsible body, and a managing authority, called the "board". The cooperation is funded by member fees, which are according to population size. Purpose The network aims at promoting the various interests of the islands at national and international level, as ... [...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, which includes the 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 \sqrt is found in a letter written on 25 October 1786 by the German scientist Georg Christoph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soprano C
C or Do is the first note of the C major scale, the third note of the A minor scale (the relative minor of C major), and the fourth note (G, A, B, C) of the Guidonian hand, commonly pitched around 261.63 Hz. The actual frequency has depended on historical pitch standards, and for transposing instruments a distinction is made between written and sounding or concert pitch. It has enharmonic equivalents of B and D. In English the term ''Do'' is used interchangeably with C only in the context of fixed Do solfège; in the movable Do system Do refers to the tonic of the prevailing key. Frequency Historically, concert pitch has varied. For an instrument in equal temperament tuned to the A440 pitch standard widely adopted in 1939, middle C has a frequency around 261.63 Hz (for other notes see piano key frequencies). Scientific pitch was originally proposed in 1713 by French physicist Joseph Sauveur and based on the numerically convenient frequency of 256 Hz for mi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biodiesel
Biodiesel is a renewable biofuel, a form of diesel fuel, derived from biological sources like vegetable oils, animal fats, or recycled greases, and consisting of long-chain fatty acid esters. It is typically made from fats. The roots of biodiesel as a fuel source can be traced back to when J. Patrick and E. Duffy first conducted transesterification of vegetable oil in 1853, predating Rudolf Diesel's development of the diesel engine. Diesel's engine, initially designed for mineral oil, successfully ran on peanut oil at the 1900 Paris Exposition. This landmark event highlighted the potential of vegetable oils as an alternative fuel source. The interest in using vegetable oils as fuels resurfaced periodically, particularly during resource-constrained periods such as World War II. However, challenges such as high viscosity and resultant engine deposits were significant hurdles. The modern form of biodiesel emerged in the 1930s, when a method was found for transforming vegetable ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diesel Fuel
Diesel fuel, also called diesel oil, heavy oil (historically) or simply diesel, is any liquid fuel specifically designed for use in a diesel engine, a type of internal combustion engine in which fuel ignition takes place without a spark as a result of compression of the inlet air and then injection of fuel. Therefore, diesel fuel needs good compression ignition characteristics. The most common type of diesel fuel is a specific fractional distillation, fractional distillate of petroleum fuel oil, but alternatives that are not derived from petroleum, such as biodiesel, biomass to liquid (BTL) or gas to liquid (GTL) diesel are increasingly being developed and adopted. To distinguish these types, petroleum-derived diesel is sometimes called petrodiesel in some academic circles. Diesel is a high-volume product of oil refineries. In many countries, diesel fuel is standardized. For example, in the European Union, the standard for diesel fuel is EN 590. Ultra-low-sulfur diesel (ULSD) i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Interpunct
An interpunct , also known as an interpoint, middle dot, middot, centered dot or centred dot, is a punctuation mark consisting of a vertically centered dot used for interword separation in Classical Latin. ( Word-separating spaces did not appear until some time between 600 and 800 CE.) It appears in a variety of uses in some modern languages. The multiplication dot or "dot operator" is frequently used in mathematical and scientific notation, and it may differ in appearance from the interpunct. In written language Various dictionaries use the interpunct (in this context, sometimes called a hyphenation point) to indicate where to split a word and insert a hyphen if the word doesn't fit on the line. There is also a separate Unicode character, . English In British typography, the space dot was once used as the formal decimal point. Its use was advocated by laws and can still be found in some UK-based academic journals such as ''The Lancet''. When the pound sterling was de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boron-7
Boron (5B) naturally occurs as isotopes and , the latter of which makes up about 80% of natural boron. There are 13 radioisotopes that have been discovered, with mass numbers from 7 to 21, all with short half-lives, the longest being that of , with a half-life of only and with a half-life of . All other isotopes have half-lives shorter than . Those isotopes with mass below 10 decay into helium (via short-lived isotopes of beryllium for and ) while those with mass above 11 mostly become carbon. List of isotopes , -id=Boron-7 , , style="text-align:center" , 5 , style="text-align:center" , 2 , , [] , p , Subsequently decays by double proton emission to for a net reaction of → + 3 , (3/2−) , , , - , Has 1 halo nucleus, halo protonIntermediate product of Proton–proton chain#The p–p III branch, a branch of proton–proton chain in stellar nucleosynthesis as part of the process converting hydrogen to helium , style="text-align:center" , 5 , style ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stellar Classification
In astronomy, stellar classification is the classification of stars based on their stellar spectrum, spectral characteristics. Electromagnetic radiation from the star is analyzed by splitting it with a Prism (optics), prism or diffraction grating into a spectrum exhibiting the Continuum (spectrum), rainbow of colors interspersed with spectral lines. Each line indicates a particular chemical element or molecule, with the line strength indicating the abundance of that element. The strengths of the different spectral lines vary mainly due to the temperature of the photosphere, although in some cases there are true abundance differences. The ''spectral class'' of a star is a short code primarily summarizing the ionization state, giving an objective measure of the photosphere's temperature. Most stars are currently classified under the Morgan–Keenan (MK) system using the letters ''O'', ''B'', ''A'', ''F'', ''G'', ''K'', and ''M'', a sequence from the hottest (''O'' type) to the cool ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vitamin B7
Biotin (also known as vitamin B7 or vitamin H) is one of the B vitamins. It is involved in a wide range of metabolic processes, both in humans and in other organisms, primarily related to the utilization of fats, carbohydrates, and amino acids. The name ''biotin'', borrowed from the German , derives from the Ancient Greek word (; 'life') and the suffix "-in" (a suffix used in chemistry usually to indicate 'forming'). Biotin appears as a white, needle-like crystalline solid. Chemical description Biotin is classified as a heterocyclic compound, with a sulfur-containing tetrahydrothiophene ring fused to a ureido group. A C5-carboxylic acid side chain is appended to the former ring. The ureido ring, containing the −N−CO−N− group, serves as the carbon dioxide carrier in carboxylation reactions. Biotin is a coenzyme for five carboxylase enzymes, which are involved in the catabolism of amino acids and fatty acids, synthesis of fatty acids, and gluconeogenesis. Biotinylation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
