Decibel and Jet, are what type of item?
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Decibel (magazine) Decibel is a monthly heavy metal magazine published by the Philadelphia-based Red Flag Media since October 2004. Its sections include Upfront, Features, Reviews, Guest Columns and the Decibel Hall of Fame. The magazine's tag-line is currently "Extremely Extreme" (previously "The New Noise"); the editor-in-chief is Albert Mudrian.
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Jet (magazine) Jet is a digital magazine. As an American weekly marketed toward African-American readers, it was founded in 1951 by John H. Johnson of the Johnson Publishing Company in Chicago, Illinois. Initially billed as "The Weekly Negro News Magazine", "Jet" is notable for its role in chronicling the Civil Rights Movement from its earliest years, including coverage of the Emmett Till murder, the Montgomery bus boycott, and Martin Luther King Jr.
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Ramjet A ramjet, sometimes referred to as a flying stovepipe or an athodyd (an abbreviation of aero thermodynamic duct), is a form of airbreathing jet engine that uses the engine's forward motion to compress incoming air without an axial compressor. Because ramjets cannot produce thrust at zero airspeed, they cannot move an aircraft from a standstill. A ramjet-powered vehicle, therefore, requires an assisted take-off like a rocket assist to accelerate it to a speed where it begins to produce thrust. Ramjets work most efficiently at supersonic speeds around 3 Mach . This type of engine can operate up to speeds of 6 Mach .
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Zytel Zytel is a trademark owned by DuPont and used for a number of different high strength, abrasion and impact resistant thermoplastic polyamide formulations of the family more commonly known as nylon. The Zytel product line is based mostly on nylon 66, but also includes grades based on nylon 6 as a matrix, long chain nylons such as nylon 610 (if based on at least one renewable monomer they are branded Zytel RS), and copolymers including a transparent resin called Zytel 330. Resins based on polyphthalamides are branded 'Zytel HTN'. The Zytel product range takes advantage of the fact that nylons are one of the most compatible polymers with modifiers and so offers grades with varying degrees of fiberglass, from 13% to 60%, (to increase stiffness and strength), rubber toughened resins, flame retarded grades. Nylon resins with mineral reinforcement are branded 'Minlon'.
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American Jet Set American Jet Set (1999) is an album by Kill Hannah. It was produced and co-written by Howie Beno.
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Japan Aviation Electronics Japan Aviation Electronics Industry, Ltd. (日本航空電子工業 , Nihon Kōkū Denshi Kōgyō ) is a Japanese corporation specializing in the manufacture and sales of electrical connectors such as high speed LVDS, HDMI, PCI express, high density, micro coaxial, and Board to board connectors. It also makes systems equipment  and aerospace products . With headquarters in Shibuya, Tokyo, JAE is listed on the first section of the Tokyo Stock Exchange (). The company has a capital of 10.69 billion yen and had net sales of 137.6 billion yen (consolidated) for the year ended March 31, 2009, employing 5,707 people worldwide. The largest stockholder is NEC, with 24.53%.
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Air-jet loom An air-jet loom is a shuttleless loom that uses a jet of air to propel the weft yarn through the shed. It is one of two types of fluid-jet looms, the other being a water-jet loom, which was developed previously. Fluid-jet looms can operate at a faster speed than predecessor looms such as rapier looms, but they are not as common.
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RCA Type 77-DX microphone The RCA Type 77-DX microphone is a poly-directional ribbon microphone, or pressure-gradient microphone, introduced by the RCA Corporation in 1954. Both it and its predecessor, the Type 77-D, are listed in RCA's 1955 catalog, and the 77-DX appears as late as 1967. Its design has inspired a stereotypical microphone icon. Throughout the 1950s and 1960s, phonograph record album cover photos show artists singing into the side of a 77-DX.
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Quad Electrostatic Loudspeaker The Quad Electrostatic Loudspeaker (ESL) is the world's first production full-range electrostatic loudspeaker, launched in 1957 by Quad Electroacoustics, then known as the Acoustical Manufacturing Co. Ltd. The speaker is shaped somewhat like a home electric radiator curved slightly on the vertical axis. They are widely admired for their clarity and precision, but known to be difficult speakers to run and maintain.
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Dynamic Cassette International Dynamic Cassette International (DCI) is an internationally recognised Boston, Lincolnshire, UK based ink cartridge and laser toner manufacturing company, producing products under the Jet Tec brand name. DCI is the sole UK manufacturer of compatible ink cartridges. DCI is notable for winning the Queen's Award for Enterprise: Innovation in 2004 and the Queen's Award for Export and being one of the biggest employers in Boston, employing over 300 staff at its 40,000 square metres factory. The company is currently Europe's largest manufacturer of compatible inkjet cartridges and has a turnover in excess of £20 million.
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Water-jet printer A water-jet printer (or waterjet printer) is a printer that makes use of paper coated with special dyes and ink cartridges filled with water to print paper copies of documents. Using paper treated with oxazolidine, the water jet changes the colour of the chemical to produce a print which fades in about a day, depending on temperature, and the paper can be re-used rather than being disposed of. The print fades away within about 22 hours at temperatures below 35 degrees Celsius (95 degrees Fahrenheit) as the water evaporates. While the chemical treatment makes the paper slightly more expensive, use of water instead of ink in the printer makes it much cheaper overall, and the only change needed to the printer is to replace what's in the cartridge.
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Darkwing (Transformers) Darkwing (sometimes called Darkwind) is a fictional character from the various Transformers series. He is a Decepticon jet.
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Jetpack (musician) Jetpack is based in Southern California and is primarily musician Jetpack Dan or Daniel J. (real name: Dan J. Standiford) with Michael Kramer, who drums and sings and co-produces. Jetpack composes, records, and performs the guitar dominated instrumental music known as surf or surf rock, that was a music industry phenomenon of the early 1960s. Although it had retained a following, especially in Southern California, surf experienced a world-wide revival in the 1990s. Jetpack often mixes the traditionally accepted surf instruments, such as Fender guitars and tube amplifiers, with nontraditional instruments such as fretless bass and 12 string Rickenbacker guitars, and branches into other related subgenres of rock such as spy, noir, and rockabilly music. Live shows find the band usually dressed as FBI agents with I.D. badges and a secret service guard at the stage.
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Pratt &amp; Whitney J58 The Pratt & Whitney J58 (company designation JT11D-20) was a jet engine that powered the Lockheed A-12, and subsequently the YF-12 and the SR-71 aircraft. The J58 was a single-spool turbojet with an afterburner. It had a unique bleed from the compressor to the afterburner which gave increased thrust at high speeds. This feature caused it to be referred to as a turboramjet in some writings. It delivered 25,000 pound-force (110 kN) of thrust without afterburner (dry) and 34,000 (150 kN) with afterburner (wet).
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Deci- Deci- (symbol d) is a decimal unit prefix in the metric system denoting a factor of one tenth. Proposed in 1793 and adopted in 1795, the prefix comes from the Latin "decimus" , meaning "tenth". Since 1960, the prefix is part of the International System of Units (SI). Its most frequent use, however, is in a non-SI unit, the decibel, used to measure sound intensity (relative to a reference) and many other ratios.
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Scramjet A scramjet (supersonic combusting ramjet) is a variant of a ramjet airbreathing jet engine in which combustion takes place in supersonic airflow. As in ramjets, a scramjet relies on high vehicle speed to forcefully compress the incoming air before combustion (hence "ram"jet), but a ramjet decelerates the air to subsonic velocities before combustion, while airflow in a scramjet is supersonic throughout the entire engine. This allows the scramjet to operate efficiently at extremely high speeds.
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Jet.com Jet.com is an American e-commerce company headquartered in Hoboken, New Jersey. The company was cofounded by entrepreneur Marc Lore (who had sold his previous company, Diapers.com, to Amazon.com) along with Mike Hanrahan and Nate Faust, and has raised $820 million over four venture rounds from firms including Google Ventures, Goldman Sachs, Bain Capital Ventures, Accel Partners, Alibaba Group, and Fidelity. The site was publicly launched in July 2015.
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CryoJet CryoJet / IceJet is a derivative of the machining process called abrasive waterjet (AWJ) machining. CryoJet/IceJet technology uses ice particles made of water coming from a running water or freshwater system to cut material. While the ice particles are cutting material, they melt and go into the water tank of the machine. The pressurized water acting as a cutting jet can be re-used, with adequate filtering, creating a closed water circuit. However, the majority of users do not re-use the water. If more widely used, CryoJet may produce a drastic reduction in the amount of abrasive waste spill currently produced during the water jet cutting process, as no mineral abrasive is used by this technology.
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Pulse detonation engine A pulse detonation engine (PDE) is a type of propulsion system that uses detonation waves to combust the fuel and oxidizer mixture. The engine is pulsed because the mixture must be renewed in the combustion chamber between each detonation wave and the next. Theoretically, a PDE can operate from subsonic up to a hypersonic flight speed of roughly Mach 5. An ideal PDE design can have a thermodynamic efficiency higher than other designs like turbojets and turbofans because a detonation wave rapidly compresses the mixture and adds heat at constant volume. Consequently, moving parts like compressor spools are not necessarily required in the engine, which could significantly reduce overall weight and cost. PDEs have been considered for propulsion since 1940. Key issues for further development include fast and efficient mixing of the fuel and oxidizer, the prevention of autoignition, and integration with an inlet and nozzle.
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Titanium aluminide Titanium aluminide, TiAl, is an intermetallic chemical compound. It is lightweight and resistant to oxidation and heat, however it suffers from low ductility. The density of gamma TiAl is about 4.0 g/cm³. It finds use in several applications including automobiles and aircraft. The development of TiAl based alloys began about 1970; however the alloys have only been used in these applications since about 2000.
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Jet pack A jet pack, rocket belt or rocket pack is a device, usually worn on the back, which uses jets of gas (or in some cases liquid) to propel the wearer through the air.
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Aerophone An aerophone ( ) is any musical instrument that produces sound primarily by causing a body of air to vibrate, without the use of strings or membranes, and without the vibration of the instrument itself adding considerably to the sound. Aerophones categorically comprise "the largest and most complex group of instruments in the Americas".