All articles starting with D
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Dromaeosauridae
Dromaeosauridae, also known as dromaeosaurids, is a family of carnivorous, feathered theropod dinosaurs, close relatives of birds, known for the enlarged sickle claw on each second toe.
Dromaeosaurus
Dromaeosaurus albertensis, type genus of Dromaeosauridae (raptors), a small Late Cretaceous theropod from Alberta known from a 1914 Barnum Brown skull, with a robust skull and an estimated 885 N bite force.
Dromaius
Dromaius (emus) is an Australian genus of large flightless ratite birds; the sole living species, the emu Dromaius novaehollandiae, reaches 1.9 m, numbers 630,000-725,000 (IUCN Least Concern), and extinct dwarf island forms once lived on Tasmania, Kangaroo Island, and King Island.
Drombeg stone circle
Drombeg stone circle (An Drom Beag, the Druid's Altar) is a Bronze Age recumbent stone circle near Glandore, County Cork, Ireland: 17 original stones, 9.3 m across, winter solstice sunset alignment, 1957 Fahy excavation with central cremation burial.
Drôme
Drôme (26), department in southeastern France, Auvergne-Rhône-Alpes region, prefecture Valence, named after the Drôme river. 524,207 inhabitants (2023), 362 communes, fruit, lavender and viticulture agriculture.
Dromedary
Dromedary (Camelus dromedarius), the one-humped Arabian camel, a domesticated desert livestock species of Africa and the Middle East; single fat-filled hump, tolerates 30% dehydration loss, over 15 million head, feral in Australia.
Drometrizole
Drometrizole (CAS 2440-22-4), also called Mexoryl XL in its trisiloxane form (CAS 155633-54-8), is a benzotriazole UV absorber; the trisiloxane is a photostable broad-spectrum sunscreen filter limited to 15% in the EU and not FDA-approved.
Dromia personata
Dromia personata, the common or sleepy sponge crab (synonym Dromia vulgaris), is a Dromiidae crab of the Mediterranean and NE Atlantic that cuts sponges and ascidians and carries them on its back with modified rear legs.
Drömling
Drömling, a fen lowland and UNESCO Biosphere Reserve (2023) between Lower Saxony and Saxony-Anhalt, Germany; drained since 1770 into the 'Land of a Thousand Ditches' with 2,200 km of watercourses across about 452 square kilometers.
Drona
Drona (द्रोण, Droṇa), also Dronacharya, is the Brahmin martial guru of the Pandavas and Kauravas in the Mahabharata: vessel-born son of Bharadvaja, second Kaurava commander after Bhishma, slain in meditation after Yudhishthira's half-truth about Ashwatthama.
Dronabinol
Dronabinol, marketed as Marinol, is a synthetic version of THC, the main psychoactive compound in cannabis, approved in 1985 for chemotherapy nausea and in 1992 for AIDS-related weight loss.
Dronacharya Award (द्रोणाचार्य पुरस्कार)
Dronacharya Award (द्रोणाचार्य पुरस्कार), India's national coaching honour instituted in 1985 by the Ministry of Youth Affairs and Sports; Regular and Lifetime categories, up to 5 awards yearly, ₹10/15 lakh cash, presented by the President on 29 August.
Dronamics
Dronamics is a Bulgarian cargo drone developer and operator founded in 2014 by brothers Svilen and Konstantin Rangelov, described as the world's first licensed cargo drone airline.
DroNc-seq
DroNc-seq is a droplet-based single-nucleus RNA sequencing method that profiles gene expression in thousands of nuclei from frozen or archived tissue, such as post-mortem human brain.
Drone
A drone is an aircraft that flies without a pilot on board, controlled remotely by an operator or an onboard computer; US regulation calls it an unmanned aircraft.
Drone (bee)
Drone (bee): the male honey bee (Apis mellifera), raised from unfertilized haploid eggs, whose sole role is mating with a virgin queen at drone congregation areas; lives about 4–5 weeks, matures sperm by day 20, and dies after mating.
Drone as First Responder
Drone as First Responder (DFR) is a public safety model in which a drone flies to the scene of a 911 call and streams live video before ground units arrive.
Drone carrier
A drone carrier, or drone mothership, is a warship designed to operate a substantial force of unmanned vehicles, chiefly UAVs, from dedicated, converted, or adapted ships.
Drone Champions League
The Drone Champions League (DCL) is an international drone racing league founded in 2016, based in Vaduz, Liechtenstein, combining simulator racing with live FPV events.
Drone metal
Drone metal is a marginal, largely underground heavy metal subgenre first emerging in the early 1990s, built on sustained drones, extreme slowness, repetition, down-tuned distorted guitars, and maximum volume.
Drone music
Drone music is a minimalist genre built on sustained tones, notes, or tone clusters held for minutes or hours. Rooted in the tanpura drone of Indian classical music, bagpipes, and chant, it was codified by La Monte Young and spans drone ambient and drone metal.
Drone photography
Drone photography is the capture of still images and video with camera-equipped unmanned aerial vehicles, a form of aerial photography popularized by the 2013 DJI Phantom.
Drone racing
Drone racing, also called FPV drone racing or Rotorcross, is a motorsport in which pilots race quadcopters through gate courses at speeds around 80 to 90 mph.
Drone Racing League
The Drone Racing League (DRL) is a professional circuit where elite FPV pilots race identical drones, founded in 2015 in New York by Nicholas Horbaczewski.
Drone Rules 2021
The Drone Rules 2021 are India's liberalized regulatory framework for drones, notified on 25 August 2021 and replacing the UAS Rules, 2021, covering drones up to 500 kg.
Drone seeding and spraying
Drone seeding and spraying, known as unmanned aerial spray systems (UASS) or plant protection drones, applies seed and farm chemicals to crops by drone, reaching small, sloped, or wet fields ground sprayers cannot.
Drone soccer
Drone soccer (드론축구) is a team air sport created in 2016 in Jeonju, South Korea, where pilots fly spherical caged drones through the opposing team's goal ring.
Drone strikes in Pakistan
Drone strikes in Pakistan, also called the drone war in Pakistan, were a covert CIA drone campaign against al-Qaeda and the Taliban from 2004 to 2018.
Drone swarm attack
A drone swarm attack is an offensive operation in which multiple drones coordinate to saturate defenses and distribute strikes, ranging from timed salvos of pre-programmed drones to autonomous self-organizing networks.
Drone warfare
Drone warfare, also called UAV warfare, is the use of drones in pursuit of a conflict party's goals, with 113 countries and 65 non-state actors holding weaponized drones.