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AR1
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AR1 may refer to * AR-1 (multiple rocket launcher) * Aerojet Rocketdyne AR1, a rocket engine * Alba AR1, an experimental racing car * Archaerhodopsin-1, a photoreceptor * Arkansas's 1st congressional district * Arkansas Highway 1 * ArmaLite AR-1, a bolt-action rifle manufactured by ArmaLite * IPCC First Assessment Report * , a repair ship of the United States Navy * Acoustic Research AR-1, an acoustic suspension speaker from Acoustic Research Acoustic Research was a Cambridge, Massachusetts-based company that manufactured high-end audio equipment. The brand is now owned by VOXX. Acoustic Research was known for the AR-3 series of speaker systems, which used the acoustic suspension wo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ArmaLite AR-1
ArmaLite, or Armalite, is an American small arms engineering company, formed in the early 1950s in Hollywood, California. Many of its products, as conceived by chief designer Eugene Stoner, relied on unique foam-filled fiberglass butt/stock furniture and a composite barrel using a steel liner inside an aluminum sleeve, including the iconic AR-15/ M16 family. While the original ArmaLite ceased doing business in the 1980s, the brand was revived in 1996, by Mark Westrom. Originating as the light firearms division of Fairchild Engine and Airplane Corporation, ArmaLite was formally incorporated in 1954. Stoner's first design, the AR-1 Parasniper (dating from 1952), was relatively unsuccessful. However, in 1956, when ArmaLite competed in a contest for an aircrew survival rifle, its AR-5 and AR-7 designs were put into production and adopted by elements of the US military. In 1957, ArmaLite also competed for the contract for a new main US combat rifle, in the NATO standard 7.62 mm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ArmaLite
ArmaLite, or Armalite, is an American small arms engineering company, formed in the early 1950s in Hollywood, California. Many of its products, as conceived by chief designer Eugene Stoner, relied on unique foam-filled fiberglass butt/stock furniture and a composite barrel using a steel liner inside an aluminum sleeve, including the iconic AR-15/ M16 family. While the original ArmaLite ceased doing business in the 1980s, the brand was revived in 1996, by Mark Westrom. Originating as the light firearms division of Fairchild Engine and Airplane Corporation, ArmaLite was formally incorporated in 1954. Stoner's first design, the AR-1 Parasniper (dating from 1952), was relatively unsuccessful. However, in 1956, when ArmaLite competed in a contest for an aircrew survival rifle, its AR-5 and AR-7 designs were put into production and adopted by elements of the US military. In 1957, ArmaLite also competed for the contract for a new main US combat rifle, in the NATO standard 7.62 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AR-1 (multiple Rocket Launcher)
The BM-30 ''Smerch'' (, 'whirlwind'), 9K58 Smerch or 9A52-2 Smerch-M is a heavy self-propelled 300 mm multiple rocket launcher designed in the Soviet Union to fire a full load of 12 solid-fuelled projectiles. The system is intended to defeat personnel, armored, and soft targets in concentration areas, artillery batteries, command posts and ammunition depots. It was designed in the early 1980s and entered service in the Soviet Army in 1989. When first observed by the West in 1983, it received the code MRL 280mm M1983. It continues in use by Russia; a program to replace it with the Tornado-S began in 2018. Operational history The first confirmed combat uses of the Smerch were in two war zones in 2014. Syrian military forces used the system against rebel forces during the Syrian civil war, including in fighting in Jobar. It was also used by Russia-backed militants to deliver explosive and cluster munitions to Ukrainian military positions and likewise by the Ukrainian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aerojet Rocketdyne AR1
The Aerojet Rocketdyne AR1 is a thrust RP-1/ LOX oxidizer-rich staged combustion cycle rocket engine project. The engine was conceived in 2014, and received US government funding to build a prototype engine in 2016. By 2018, the USAF had committed of government funding to develop the engine and build an initial engine prototype, while Aerojet will put of private capital into the project through the prototype build. , there have been no plans to take the AR1 to full production. History Aerojet Rocketdyne proposed in 2014 to "lobby the government to fund an all-new, U.S.-sourced rocket propulsion system." In June 2014, Aerojet initially projected it would cost under per pair of engines, not including the up to estimated development cost to be funded by the government. Later in 2014, the US Congress passed a law requiring the US Air Force to "develop a new propulsion system by 2019 to replace the RD-180 engine" that powers Atlas V used by United Launch Alliance (ULA), becaus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alba AR1
The Alba AR1 was a one-off experimental open-wheel formula racing car, designed by ex-Osella engineer Giorgio Stirano, and developed and built by Italian manufacturer Alba Engineering; constructed to Formula 3 Formula Three (F3) is a third-tier class of open-wheel formula racing. The various championships held in Europe, Australia, South America and Asia form an important step for many prospective Formula One drivers. History Formula Three (adop ... regulations, in 1981. References {{DEFAULTSORT:Alba AR3 Rear-wheel-drive vehicles Mid-engined cars Formula Three cars Cars introduced in 1981 Cars of Italy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Archaerhodopsin
Archaerhodopsin proteins are a Protein family, family of retinal-containing receptor protein, photoreceptors found in the archaea genera ''Halobacterium'' and ''Halorubrum''. Like the homologous bacteriorhodopsin (bR) protein, archaerhodopsins harvest energy from sunlight to pump H+ ions out of the cell, establishing a proton motive force that is used for Adenosine triphosphate, ATP synthesis. They have some structural similarities to the mammalian G protein-coupled receptor protein rhodopsin, but are not true homologs. Archaerhodopsins differ from bR in that the claret membrane, in which they are expressed, includes bacterioruberin, a second chromophore thought to protect against photobleaching. Also, bR lacks the omega loop structure observed at the N-terminus of the structures of several archaerhodopsins. Mutants of Archaerhodopsin-3 (AR3) are used as tools in optogenetics for neuroscience research. Etymology The term ''archaerhodopsin'' is a portmanteau of archaea (the doma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arkansas's 1st Congressional District
Arkansas's 1st congressional district is a U.S. congressional district in eastern Arkansas that elects a representative to the United States House of Representatives. It is currently represented by Republican Rick Crawford. With a Cook Partisan Voting Index rating of R+23, it is the most Republican district in Arkansas, a state with an all-Republican congressional delegation. Political history The Mississippi Delta became dominated by industrial agriculture in the 20th century, with cotton, rice, and soybeans by far the biggest exports from the region. The 1st District covers most of the Arkansas Delta area and stretches as far west as the Ozarks. The farming areas, despite their fertility, are generally poor by national standards. Jobs are limited and unemployment and undereducation are major issues. Rice farms receive substantial subsidies from the federal farming program. Three of the top five subsidy farms in the United States are in this district, and they have recei ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arkansas Highway 1
Arkansas Highway 1 (AR 1) is a designation for three List of state highways in Arkansas, state highways in east Arkansas. One segment of runs from U.S. Route 278 in Arkansas, U.S. Route 278 (US 278) in McGehee, Arkansas, McGehee north to U.S. Route 165, US 165 at Back Gate, Arkansas, Back Gate. A second segment of runs from US 165 in DeWitt, Arkansas, DeWitt north to U.S. Route 49, US 49 in Marvell, Arkansas, Marvell. A third segment of runs from US 49 at Walnut Corner north to the Missouri state line. One of the 1926 Arkansas state highway numbering, original 1926 state highways, Highway 1 has remained very close to its original routing. Route description McGehee to Back Gate Highway 1 begins at U.S. Route 278 in Arkansas, US 278 in downtown McGehee, Arkansas, McGehee and runs northwest (along the Union Pacific Railroad tracks) for three blocks before turning northeast at an intersection with Arkansas Highway 159, Highway 159. The route continues across U. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IPCC First Assessment Report
The First Assessment Report (FAR) of the Intergovernmental Panel on Climate Change (IPCC) was completed in 1990. It served as the basis of the United Nations Framework Convention on Climate Change (UNFCCC). This report had effects not only on the establishment of the UNFCCC, but also on the first session of the Conference of the Parties (COP), held in Berlin in 1995. The executive summary of the WG I Summary for Policymakers report that said they were certain that emissions resulting from human activities are substantially increasing the atmospheric concentrations of the greenhouse gases, resulting on average in an additional warming of the Earth's surface. They calculated with confidence that CO2 had been responsible for over half the enhanced greenhouse effect. They predicted that under a "business as usual" (BAU) scenario, global mean temperature would increase by about 0.3 °C per decade during the 1stcentury. They judged that global mean surface air temperature had incr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
