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Duplex stainless steel
Duplex stainless steel is a family of stainless steels with a roughly 50/50 ferrite and austenite microstructure, giving about twice the yield strength of austenitic grades plus chloride resistance.
Duplex telegraphy
Duplex telegraphy is the simultaneous transmission of two telegraph messages, one in each direction, over a single wire. J. B. Stearns introduced the first practical system in 1868.
Duplexer
A duplexer is a three-port RF device that lets a transmitter and receiver share a single antenna simultaneously while blocking transmit leakage into the receiver.
Duplicati
Duplicati is a free, open-source backup client that stores encrypted, incremental, compressed backups on local disks, cloud storage services, and remote file servers, with a browser-based interface.
DuPont
DuPont, formally DuPont de Nemours, Inc., is an American materials science company founded in 1802 as a gunpowder maker, known for nylon, Teflon, and Kevlar.
Durability analysis
Durability analysis is the engineering method for predicting how long a component or structure withstands repeated loading and fatigue before failure, using stress-life, strain-life, and fracture-mechanics methods.
Duracell
Duracell is an American battery manufacturer, owned by Berkshire Hathaway since 2016 and headquartered in Bethel, Connecticut. It sells alkaline, lithium, coin, and rechargeable cells under lines like Coppertop.
Duralumin
Duralumin, also known as duraluminium, is an age-hardenable aluminum alloy with about 4% copper, discovered by Alfred Wilm in 1906 and named after Düren, Germany; it made all-metal aviation possible, including the Junkers F.13 of 1919.
Duramax V8 engine
The Duramax V8 engine, also known as the GM Duramax engine, is a 6.6-liter turbocharged diesel V8 built for GM heavy-duty trucks since 2000, designed by Isuzu and produced in Moraine, Ohio.
Durango and Silverton Narrow Gauge Railroad
The Durango and Silverton Narrow Gauge Railroad, historically the Silverton Branch, is a heritage railroad carrying passengers by steam locomotive between Durango and Silverton in southwestern Colorado.
Duravant
Duravant is a privately held American automation company headquartered in Downers Grove, Illinois, serving food processing, packaging, and material handling customers in over 190 countries.
Durgapur Projects Limited power station
The Durgapur Projects Limited power station is a coal-fired thermal power station at Durgapur, West Bengal, India, owned by the Government of West Bengal enterprise DPL.
Durham Cathedral
Durham Cathedral is the Anglican cathedral of the Diocese of Durham in north-east England, built between 1093 and 1133 to house the shrine of St Cuthbert.
Durham Ranch Gas Field
Durham Ranch Gas Field is a coal seam gas field in the Bowen Basin of central Queensland, Australia, discovered by Tri-Star Petroleum in the 1990s and developed by Origin Energy.
Duri Oil Field
The Duri Oil Field is a heavy-oil field in Riau Province, central Sumatra, Indonesia, producing since 1958 and the site of the world's largest steamflood operation.
Durk Kingma
Durk Kingma (formal name Diederik P. Kingma), born 1983, is a Dutch computer scientist known for the Variational Autoencoder and the Adam optimizer, and an OpenAI co-founder.
Dürkopp Adler
Dürkopp Adler is a German manufacturer of industrial sewing machines and automated sewing systems in Bielefeld, formed in 1990 by the merger of Kochs Adler and Dürkoppwerke.
Dürnrohr Power Station
The Dürnrohr Power Station is a former coal and gas fired power station in Zwentendorf, Lower Austria, operational from 1987, with coal units shut down by 2019.
Duro Felguera
Duro Felguera is a Spanish industrial engineering and construction company headquartered in Langreo, Asturias. Founded in 1858 as a steelmaker, it now executes energy, mining, and industrial projects.
Duronto Express (দুরন্ত এক্সপ্রেস)
Duronto Express (দুরন্ত এক্সপ্রেস) is a class of long-distance passenger trains operated by Indian Railways, introduced in September 2009 as its first non-stop superfast services.
Durus
Durus is an energy-efficient bipedal humanoid robot developed by SRI International under a DARPA contract beginning in 2013, later the experimental walking platform of Georgia Tech's AMBER Lab.
Duryea Motor Wagon Company
The Duryea Motor Wagon Company, founded by brothers Charles and Frank Duryea in Springfield, Massachusetts, in the 1890s, was the first American company to manufacture and sell automobiles.
DuSable Bridge
The DuSable Bridge, long known as the Michigan Avenue Bridge, is a double-deck bascule bridge carrying Michigan Avenue over the Chicago River, opened in 1920.
Dushan Boroyevich
Dushan Boroyevich is a power electronics engineer born in Zagreb in 1952, a Virginia Tech professor elected to the National Academy of Engineering in 2014.
Düsseldorf Airport
Düsseldorf Airport (Flughafen Düsseldorf), in the Lohausen district about 7 kilometers north of the city, is the largest airport in North Rhine-Westphalia and the fourth largest in Germany.
Düsseldorf Stadtbahn
The Düsseldorf Stadtbahn is Düsseldorf's light rail system, eleven Rheinbahn-operated lines on about 6.9 km of tunnel through the center, some reaching Neuss, Krefeld, and Duisburg.
Dust explosion
A dust explosion, also called a combustible dust explosion, is the rapid combustion of a suspended dust cloud, which destroys equipment and buildings in industries that handle powders.
DUSt3R and VGGT (feedforward geometry)
DUSt3R and VGGT are transformer models in 3D computer vision that predict camera parameters, depth maps, and point maps from uncalibrated images in a single pass.
Dustin Moskovitz
Dustin Moskovitz is an American entrepreneur who co-founded Facebook in 2004, serving as its first Chief Technology Officer, then co-founded and led the software company Asana.
DUT-49
DUT-49 is a mesoporous metal-organic framework (MOF) synthesized at the Technical University of Dresden, known since its 2016 Nature report as the first material exhibiting negative gas adsorption.