All articles starting with D
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Duodenopancreatectomy
Duodenopancreatectomy, most often called the Whipple operation or pancreaticoduodenectomy, is surgery removing the pancreatic head and duodenum, the standard treatment for pancreatic head and periampullary cancers.
Duodenoscopes
Duodenoscopes, also called ERCP endoscopes, are flexible side-viewing endoscopes passed into the duodenum for pancreatobiliary therapy; over 500,000 US ERCP procedures yearly, with reprocessing challenges and infection risk driving disposable designs.
Duodenoscopy
Duodenoscopy is the endoscopic examination of the duodenum using a flexible scope passed through the mouth; the side-viewing duodenoscope visualizes the major papilla and serves as the platform for ERCP.
Duodenostomy
Duodenostomy is a surgically created opening into the duodenum, made by placing a tube through the duodenal wall to decompress the lumen, protect a repair suture line, or drain a perforation.
Duodenum
Duodenum: first, C-shaped segment of the small intestine, 25–30 cm, from pylorus to ligament of Treitz; receives bile and pancreatic secretions via ampulla of Vater; secretes secretin, CCK, GIP; site of celiac biopsy and peptic ulcers.
Duoethnography
Duoethnography is a qualitative research method in which two or more researchers of difference dialogically juxtapose their life histories, producing reconstructed dialogues rather than transcripts.
Duojia Pan
Duojia Pan (潘多加), also published as Pan Duojia, is an HHMI investigator and Physiology chairman at UT Southwestern known for discovering the Hippo signaling pathway, which halts organ growth and whose failure drives tumors.
Duolicious
Duolicious, also known as Duolicious.app, is a free, open-source dating app created by an anonymous 4chan user in 2023 that matches users by personality quiz answers instead of swiping.
Duolingo
Duolingo (Duolingo, Inc.) is a Pittsburgh edtech company founded in 2011 by Luis von Ahn and Severin Hacker, offering freemium gamified language courses, Math, Music, Chess, and the Duolingo English Test; 58.7M DAUs and $298.5M Q2 2026 revenue.
Duolingo Max
Duolingo Max is a subscription tier of the Duolingo language learning app, announced in 2023. It uses GPT-4 and GPT-4o to offer advanced features like Video Call with Lily.
Duomi Music
Duomi Music (多米音乐) was a Beijing-based music-streaming platform that led China's mobile music clients in 2012, listed on the NEEQ in 2016, and shut down in 2018.
Dương Đình Nghệ
Dương Đình Nghệ was a Vietnamese warlord who expelled Southern Han forces in 931 and ruled Tĩnh Hải quân as military governor until his assassination in 937.
Dương Văn Minh
Dương Văn Minh (Big Minh, 1916–2001), South Vietnamese general who led the 1963 coup against Diem, was chief of state in 1963–64, and as last president surrendered Saigon on 30 April 1975.
Duopoly
A duopoly is a market with two sellers, the smallest form of oligopoly, exemplified by Boeing and Airbus, which deliver over 95 percent of large commercial aircraft.
DUOX2
DUOX2 (dual oxidase 2, formerly THOX2) is a chromosome 15 gene encoding a calcium-dependent NADPH oxidase that generates hydrogen peroxide for thyroid hormone synthesis; mutations cause thyroid dyshormonogenesis-6, congenital hypothyroidism.
Duoyan Three Guards
The Duoyan Three Guards (朵颜三卫), also known as the Uriankhai Three Guards, were the Duoyan, Taining, and Fuyu guard commanderies established among Mongol tribes on the Ming northeastern frontier in 1389.
DuPage County, Illinois
DuPage County, Illinois: a Chicago-area collar county established February 9, 1839 from Cook County, named for the DuPage River, county seat Wheaton since 1867, population 932,877 (2020).
Dupahiya
Dupahiya (दुपहिया) is a Hindi Prime Video comedy-drama set in Dhadakpur, Bihar, where a stolen dowry motorbike disrupts the village's 25-year crime-free celebration; two seasons, 2025 and 2026.
Dupatta
Dupatta (दुपट्टा/دوپٹہ), also called odhani or chunni, is a 2–2.5 m unstitched South Asian scarf worn with salwar kameez and lehenga, from Vedic uttariya roots, serving modesty, ritual, and fashion roles.
Dupe (product)
A dupe (product dupe), short for duplicate, is a lower-priced product made to resemble a costlier one, sold legally under its own brand rather than as a counterfeit.
DUPIC
DUPIC (Direct Use of spent PWR fuel In CANDU) is a proposed nuclear fuel cycle that refabricates spent PWR fuel into CANDU reactor fuel without chemical separation.
Dupilumab
Dupilumab (Dupixent) is a fully human IgG4 monoclonal antibody against IL-4Rα that blocks IL-4/IL-13 signaling. First approved 2017 for atopic dermatitis, now indicated across asthma, CRSwNP, EoE, PN, COPD, CSU, and bullous pemphigoid.
Duplass Brothers Productions
Duplass Brothers Productions is the Los Angeles independent production company of filmmakers Mark and Jay Duplass, known for The Puffy Chair, HBO's Togetherness and Room 104, the Emmy-winning Wild Wild Country, Somebody Somewhere, Penelope, and The Creep Tapes.
Dupleix
Dupleix (डुप्ले), born Joseph Francois Dupleix in 1697, was a French colonial administrator who as governor-general of French India from 1742 to 1754 nearly built a French territorial empire before his recall.
Duplessis Orphans
Duplessis Orphans (les Orphelins de Duplessis): thousands of Quebec children, 1930s-1960s, falsely certified mentally deficient and placed in church-run psychiatric institutions for federal subsidies; documented abuse, 1962 report, 1990s lawsuits, compensation 1999-2006.
Duplex (building)
A duplex (plural duplexes), also called a duplex house, is a single residential building containing two complete dwelling units, each with its own kitchen, bathroom, and entrance, arranged side by side or stacked.
Duplex (film)
Duplex is a 2003 American black comedy directed by Danny DeVito, written by Larry Doyle, starring Ben Stiller, Drew Barrymore, and Eileen Essell as rent-controlled tenant Mrs. Connelly; released by Miramax September 26, 2003, grossing about $10 million worldwide.
Duplex (geology)
In structural geology, a duplex is an array of thrust faults splaying up from a floor thrust and recombining onto a roof thrust, stacking slices called horses.
Duplex (telecommunications)
Duplex, or duplex communication, is a telecommunications mode allowing transmission in both directions between two points: full duplex operates simultaneously, while half duplex does not; simplex carries one way only.
Duplex locomotive
A duplex locomotive, also called a duplex drive locomotive, is a steam locomotive with two engine units on one rigid frame, first built in America in 1937.