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The American Forensic Association is an American organisation which promotes and supports competitive debating and public speaking in high schools and colleges in the United States.
An aluminium alloy is an alloy in which aluminium (Al) is the predominant metal. The typical alloying elements are copper, magnesium, manganese, silicon, tin, nickel and zinc. There are two principal classifications, namely casting alloys and wrought alloys, both of which are further subdivided into the categories heat-treatable and non-heat-treatable. About 85% of aluminium is used for wrought products, for example rolled plate, foils and extrusions. Cast aluminium alloys yield cost-effective products due to the low melting point, although they generally have lower tensile strengths than wrought alloys. The most important cast aluminium alloy system is Al–Si, where the high levels of silicon (4–13%) contribute to give good casting characteristics. Aluminium alloys are widely used in engineering structures and components where light weight or corrosion resistance is required.
6061 is a precipitation-hardened aluminium alloy, containing magnesium and silicon as its major alloying elements. Originally called "Alloy 61S", it was developed in 1935. It has good mechanical properties, exhibits good weldability, and is very commonly extruded. It is one of the most common alloys of aluminium for general-purpose use.
7075 aluminium alloy (AA7075) is an aluminium alloy with zinc as the primary alloying element. It has excellent mechanical properties and exhibits good ductility, high strength, toughness, and good resistance to fatigue. It is more susceptible to embrittlement than many other aluminium alloys because of microsegregation, but has significantly better corrosion resistance than the alloys from the 2000 series. It is one of the most commonly used aluminium alloys for highly stressed structural applications and has been extensively used in aircraft structural parts.
Mellow Lane School was a comprehensive school, located in Hayes, in the London Borough of Hillingdon, Middlesex. It closed in 2011 and reopened in August of that year, as Hewens College.
The Sunday Closing (Wales) Act 1881 was an Act of the Parliament of the United Kingdom. It was one of the Licensing Acts 1828 to 1886. It required the closure of all public houses in Wales on Sundays. The Act had considerable political importance as a formal acknowledgement of the separate character of Wales, setting a precedent for future legislation and decisions. It was repealed in 1911.
AA 7039 is an aluminum alloy principally containing zinc (3.5–4.5%) as an alloying element. It is heat treatable wrought aluminum alloy. It is used for making armour suites.
The British Journal for the History of Philosophy(BJHP) is a bimonthly peer-reviewed academic journal of the British Society for the History of Philosophy, publishing articles on the history of philosophy. It is widely regarded as one of the leading international journals in the area. It has played a central role in broadening the philosophical canon to include marginalised figures and traditions. From 2013-2020 the editor-in-chief was Michael A. Beaney, currently Regius Professor of Logic at the University of Aberdeen. From 2021 the editors-in-chief are Alix Cohen (Edinburgh) and Sacha Golob (King's College London).
7005 is an aluminium wrought alloy used in bicycle frames. Due to its relative ease of welding, it does not require expensive heat treating. It is, however, harder to form, making manufacture more challenging. It has an Ultimate Tensile Strength of 350 MPa, a Fatigue Strength of 150 MPa and a density of 2.78 g/cm3. It does not need to be precipitation hardened, but can be cooled in air.
Heat exchangers are devices that transfer heat to achieve desired heating or cooling. An important design aspect of heat exchanger technology is the selection of appropriate materials to conduct and transfer heat fast and efficiently.
7068 aluminium alloy is one of the strongest commercially available aluminium alloys, with a tensile strength comparable to that of some steels. This material, also known as an aircraft alloy, is heat treatable.
Pontypridd RLFC was a professional rugby league team based in Pontypridd, Wales, which played for one seasons in the Rugby Football League, finishing 27th out of 29 teams in 1926-27, before withdrawing early in the following season.
Alireza Zamani is an Iranian arachnologist and taxonomist.
4043 aluminium alloy is a wrought aluminium alloy with good corrosion resistance typically used as filler material for welding of aluminium parts. It contains high amounts of silicon and trace amounts of other metals. It is grey in appearance and is sold as either welding wire or welding rod for TIG/MIG processes.
Hydropelta is a genus of Late Jurassic turtle from marine deposits in the Jura Mountains of eastern France.
Cuffee was an escaped slave in Jamaica who led other runaway slaves to form a community of Free black people in Jamaica in the island's forested interior, and they raided white plantation owners at the end of the eighteenth century. The name Cuffee is a variation of the Twi Akan name Kofi, which is the name given to a boy born on a Friday.
Aluminium 7050 alloy is a heat treatable alloy. It has high toughness, high strength. It has high stress corrosion cracking resistance. It has electric conductivity of value having 40 percent of copper. 7050 aluminium is known as a commercial aerospace alloy.
Aluminium 7150 alloy is a heat treatable wrought alloy. It is used in the aerospace industry for manufacturing aircraft components. Heat treatment can improve its anti-corrosion properties with a low corresponding decrease in strength.
7178 aluminum alloy is wrought alloy. It has high zinc content. After annealing, aluminum alloy 7178 has high machinability. Resistance welding can be used.
7475 aluminum alloy (Adirium) is a wrought alloy with high zinc weight percentage. It also contains magnesium, silicon and chromium.