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W10BG-D
W1 could refer to: * W1, a postcode district in the W postcode area of London * British NVC community W1 (Salix cinerea - Galium palustre woodland), one of the woodland communities of the British National Vegetation Classification * W-1 tool steel, a water-hardening steel * one of four manuscripts containing the Magnus Liber, or Magnus liber organi, a compilation of medieval music. The term is derived from the Wolfenbüttel library which holds the manuscript (Herzog August Bibliothek). * GN W-1, an electric locomotive built for the Great Northern Railway * LNER Class W1, an experimental locomotive designed by Sir Nigel Gresley for the London and North Eastern Railway * second step of the W0-W6 scale for the classification of meteorites by weathering * Wrestle-1, a Japanese professional wrestling promotion * The computational complexity class W ">/nowiki> in parameterized complexity * The Apple W1 wireless pairing chip primarily used in AirPods * W1 tram, a class of electri ...
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W Postcode Area
The W (Western and Paddington) postcode area, also known as the London W postcode area is a group of postcode districts covering part of central and part of West London, England. The area originates from the Western (W1) and Paddington (W2-14) districts of the London postal district. This area covers 35 postcode districts and around 18,554 live postcodes. Postal administration The Western district consists of the single original W1 postal district. The area that it covers is high-density and so has been subdivided into a number of smaller postcode districts. When districts are used for purposes other than the sorting of mail, such as use as a geographic reference and on street signs, the W1 subdivisions continue to be classed as one 'district'. In June 2000, there was a recoding of the area, with the W1M, W1N, W1P, W1R, W1V, W1X and W1Y districts being replaced. The mail centre for W1 is London Central, and that for W2-14 is Greenford. Deliveries for W1 (and for WC1 and WC2) ...
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British NVC Community W1 (Salix Cinerea - Galium Palustre Woodland)
British may refer to: Peoples, culture, and language * British people, nationals or natives of the United Kingdom, British Overseas Territories, and Crown Dependencies. ** Britishness, the British identity and common culture * British English, the English language as spoken and written in the United Kingdom or, more broadly, throughout the British Isles * Celtic Britons, an ancient ethno-linguistic group * Brittonic languages, a branch of the Insular Celtic language family (formerly called British) ** Common Brittonic, an ancient language Other uses *''Brit(ish)'', a 2018 memoir by Afua Hirsch *People or things associated with: ** Great Britain, an island ** United Kingdom, a sovereign state ** Kingdom of Great Britain (1707–1800) ** United Kingdom of Great Britain and Ireland (1801–1922) See also * Terminology of the British Isles * Alternative names for the British * English (other) * Britannic (other) * British Isles * Brit (other) * Briton (d ...
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Tool Steel
Tool steel is any of various carbon steels and alloy steels that are particularly well-suited to be made into tools and tooling, including cutting tools, dies, hand tools, knives, and others. Their suitability comes from their distinctive hardness, resistance to abrasion and deformation, and their ability to hold a cutting edge at elevated temperatures. As a result, tool steels are suited for use in the shaping of other materials, as for example in cutting, machining, stamping, or forging. With a carbon content between 0.5% and 1.5%, tool steels are manufactured under carefully controlled conditions to produce the required quality. The presence of carbides in their matrix plays the dominant role in the qualities of tool steel. The four major alloying elements that form carbides in tool steel are: tungsten, chromium, vanadium and molybdenum. The rate of dissolution of the different carbides into the austenite form of the iron determines the high-temperature performance of st ...
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Magnus Liber
The ''Magnus Liber'' or ''Magnus liber organi'' (English translation: ''Great Book of Organum''), written in Latin, was a repertory of medieval music known as organum. This collection of organum survives today in three major manuscripts. This repertoire was in use by the Notre-Dame school composers working in Paris around the end of the twelfth and beginning of the thirteenth centuries, though it is well agreed upon by scholars that Leonin contributed a bulk of the organum in the repertoire. This large body of repertoire is known from references to a ''"magnum volumen"'' by Johannes de Garlandia and to a ''"Magnus liber organi de graduali et antiphonario pro servitio divino"'' by the English music theorist known as Anonymous IV. Today it is known only from later manuscripts containing compositions named in Anonymous IV's description. The ''Magnus Liber'' is regarded as one of the earliest collections of polyphony. Surviving Manuscripts The ''Magnus Liber organi'' most likely t ...
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GN W-1
The W-1 was a class of electric locomotive used by the Great Northern Railway. They were constructed to haul trains on the electrified portion of the railroad across the Cascade Mountains from Wenatchee, Washington to Skykomish, Washington, including the Cascade Tunnel. Only two locomotives were built, and they had an AAR B-D+D-B wheel arrangements. The locomotives were built at General Electric's Erie works in 1947, and were numbered 5018 and 5019. They were powered by 2 W-1 motor-generators, with a total , and at that time were the largest single-unit electric locomotives used in North America. The engines share a great resemblance to the Little Joe locomotive. Both locomotives were retired in August 1956 when the electrification system was switched off and diesel locomotives started operating. Unit 5019 was scrapped in 1959. Unit 5018 was sold to the Union Pacific The Union Pacific Railroad , legally Union Pacific Railroad Company and often called simply Union Pa ...
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LNER Class W1
The LNER W1 No. 10000 (also known as the ''Hush-Hush'' due to its secrecy) was an experimental steam locomotive fitted with a high pressure water-tube boiler. Nigel Gresley was impressed by the results of using high-pressure steam in marine applications and so in 1924 he approached Harold Yarrow of shipyard and boilermakers Yarrow & Company of Glasgow to design a suitable boiler for a railway locomotive, based on Yarrow's design. Boiler The boiler was not the usual Yarrow design. In operation, particularly its circulation paths, the boiler had more in common with other three-drum designs such as the Woolnough. It has also been described as an evolution of the Brotan-Deffner water-tube firebox, with the firebox extended to become the entire boiler. The boiler resembled two elongated marine Yarrow boilers, joined end to end. Both had the usual Yarrow triangular arrangement of a central large steam drum above two separated water drums, linked by multiple rows of slightly ...
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Classification Of Meteorites By Weathering
Meteorite weathering is the terrestrial alteration of a meteorite. Most meteorites date from the oldest times in the Solar System and are by far the oldest material available on our planet. Despite their age, they are vulnerable to the terrestrial environment. Water, chlorine and oxygen attack meteorites as soon as they reach the ground. Weathering scales In order to quantify the degree of alteration that a meteorite experienced, several qualitative weathering indices have been applied to antarctic and desert samples.P. A. Bland, M. E. Zolensky, G. K. Benedix, M. A. Sephton. 'Weathering of Chondritic Meteorites'' The most known weathering scale is based upon the effects seen in polished thin sections of chondritic meteorites and it ranges from W0 (pristine) to W6 (heavy alteration). It was proposed by Jull A. J. T. et al. (1991) and updated by Wlotzka(1993) and Al-Kathiri et al.(2005). * W0: no visible oxidation of metal or troilite, but may be noticeable in transmitted light a ...
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Wrestle-1
was a Japanese ''puroresu'' or professional wrestling Professional wrestling promotion, promotion, founded in July 2013 by Keiji Mutoh following his resignation from All Japan Pro Wrestling (AJPW). The core of the promotion's roster was formed by wrestlers loyal to Mutoh, who left AJPW in a mass exodus during June 2013. Mutoh served as the promotion's first president and the head of its parent company, kabushiki gaisha named GEN Sports Entertainment. In March 2017, Kaz Hayashi took over as the new president of Wrestle-1. The promotion held its first event on September 8, 2013, at Tokyo Dome City Hall. The promotion shares its name with a series of professional wrestling events run by AJPW, K-1 and Pride Fighting Championships in the first half of the 2000s, but it is not considered a direct continuation of that project. On April 1, 2020, Wrestle-1 ceased operations. History 2013 Formation On November 1, 2012, Information technology, IT company Speed Partners bought 100% of All ...
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Parameterized Complexity
In computer science, parameterized complexity is a branch of computational complexity theory that focuses on classifying computational problems according to their inherent difficulty with respect to ''multiple'' parameters of the input or output. The complexity of a problem is then measured as a function of those parameters. This allows the classification of NP-hard problems on a finer scale than in the classical setting, where the complexity of a problem is only measured as a function of the number of bits in the input. The first systematic work on parameterized complexity was done by . Under the assumption that P ≠ NP, there exist many natural problems that require superpolynomial running time when complexity is measured in terms of the input size only, but that are computable in a time that is polynomial in the input size and exponential or worse in a parameter . Hence, if is fixed at a small value and the growth of the function over is relatively small then such p ...
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Apple W1
Apple silicon is a series of system on a chip (SoC) and system in a package (SiP) processors designed by Apple Inc., mainly using the ARM architecture. It is the basis of most new Mac computers as well as iPhone, iPad, iPod Touch, Apple TV, and Apple Watch, and of products such as AirPods, HomePod, HomePod Mini, and AirTag. Apple announced its plan to switch Mac computers from Intel processors to Apple silicon at WWDC 2020 on June 22, 2020. The first Macs built with the Apple M1 processor were unveiled on November 10, 2020. In 2022, the newest Mac models were built with Apple silicon; only older models of the Mac Mini and the Mac Pro still use Intel Core and Xeon processors respectively. Apple fully controls the integration of Apple silicon chips with the company's hardware and software products. Johny Srouji is in charge of Apple's silicon design. Manufacturing of the chips is outsourced to semiconductor contract manufacturers such as Samsung and TSMC. A series ...
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W1 (tram)
The W-class trams are a family of electric trams built by the Melbourne & Metropolitan Tramways Board (MMTB) between 1923 and 1956. Over the 33 years of production, 752 vehicles spanning 12 sub-classes were constructed, the majority at the MMTB's Preston Workshops. A small fleet continue to operate on the tramway network of Melbourne, Australia, where they are used on the City Circle tourist route. The W-class tram is a cultural icon to Melbourne: those that remain in the city are classified by the National Trust of Australia. As well as Melbourne, W-class trams operate on tourist and heritage systems across the world. A number of older variants have been withdrawn from service and later sent to cities such as Copenhagen, San Francisco, Savannah and Seattle, and by private enthusiasts. In 2018, 134 W-class trams were offered to the Australian public for new uses. As of December 2021, only 13 W class trams remain in service in Melbourne, all of which are W8 trams operating on ...
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