All articles starting with R
22,461 articles
Regenerative fuel cell
A regenerative fuel cell is a rechargeable electrochemical energy storage device that produces electricity from hydrogen and oxygen, and recharges by splitting the product water back into reactants.
Regenerative medicine
Regenerative medicine: field developing methods to regrow, repair, or replace damaged cells, tissues, and organs using stem cells, tissue engineering, biomaterials, and gene editing; term coined by William Haseltine (1999); FDA-regulated products include cell and gene therapies.
Regenerative peripheral nerve interface surgery
Regenerative peripheral nerve interface (RPNI) surgery implants a transected nerve into a free muscle graft, amplifying EMG signals for prosthetic control and reducing neuroma pain.
Regenerative process
A regenerative process is a stochastic process with random regeneration points at which it becomes a probabilistic replica of itself, producing independent, identically distributed cycles used in steady-state analysis.
Regenerative Rankine cycle
The regenerative Rankine cycle is a steam power cycle that preheats feedwater with steam extracted from the turbine, raising thermal efficiency while reducing specific work.
Regenerative thermal oxidizer
A regenerative thermal oxidizer (RTO) is an air pollution control device that destroys volatile organic compounds in industrial exhaust by heating them to combustion temperature, with ceramic beds recovering up to 95% of the heat.
Regenerator (heat exchanger)
A regenerator is a heat exchanger that transfers heat between two gas streams through a storage matrix that alternately absorbs and releases heat, operating cyclically.
Regeneron Pharmaceuticals
Regeneron Pharmaceuticals (NASDAQ: REGN), founded 1988 by Leonard Schleifer in Tarrytown, NY, is a biotech company behind EYLEA and Dupixent, with $14.3B 2025 revenue, VelociSuite antibody platforms, and 15 approved medicines.
Regensburg
Regensburg (Ratisbon) is a district-free Bavarian city at the Danube's northernmost point, founded as the Roman fortress Castra Regina in AD 179, seat of the Perpetual Imperial Diet 1663–1806, and a UNESCO World Heritage old town since 2006.
Regent
A regent is someone who temporarily exercises a monarch's powers when the sovereign is a minor, unwell, or absent, acting in the sovereign's name with legal limits.
Regent (House of the Dragon)
"Regent" is season 2, episode 5 of House of the Dragon, aired July 14, 2024 on HBO. Written by Ti Mikkel, directed by Clare Kilner; Aemond becomes prince regent while Aegon recovers, and the Blacks eye dragonseeds.
Regent Craft
Regent Craft is an American startup founded in 2020 and headquartered in North Kingstown, Rhode Island, that develops all-electric Seagliders, including the 12-passenger Viceroy, a wing-in-ground-effect craft that foils then flies above the water.
Regent International Center (丽晶国际中心)
Regent International Center (丽晶国际中心), formally 新世界·丽晶国际, is a 208-meter, 39-floor S-shaped serviced apartment complex in Xiaoshan, Hangzhou, China, known for housing over 20,000 residents at its peak.
Regent Park
Regent Park is a neighborhood in downtown Toronto, built in the late 1940s and 1950s as Canada's first and largest public housing development and rebuilt since 2005 into a mixed-income community.
Regent Theatre, Melbourne
The Regent Theatre, Melbourne is a heritage-listed 1929 Collins Street picture palace, designed by Cedric Ballantyne for Hoyts; it survived a 1945 fire, 1970 closure and demolition threats, and reopened in 1996 as a live theatre.
Regent University
Regent University, formerly CBN University, is a private Christian university in Virginia Beach, Virginia, founded by broadcaster Pat Robertson in 1977 and renamed in 1990.
Regent's Canal
Regent's Canal is an 8.5-mile canal in London running from Paddington to Limehouse on the River Thames, authorized in 1812 and opened in two stages between 1816 and 1820.
Regent's Park
The Regent's Park, a Grade I registered Royal Park in London designed by John Nash (1811–1828) on former Marylebone Park hunting land, opened to the public from 1835, home to Queen Mary's Gardens, London Zoo, and Primrose Hill.
Regent's Park Healthcare
Regent's Park Healthcare is a privately held UK cardiac healthcare company founded by Dr Anil Ohri and headquartered in Salisbury, Wiltshire, providing managed cardiology services in partnership with the NHS.
Regentonnenvariationen
Regentonnenvariationen is a 2014 poetry collection by German poet Jan Wagner, which in 2015 became the first poetry book to win the Leipzig Book Fair Prize.
Regents of the University of California v. Bakke
Regents of the University of California v. Bakke, 438 U.S. 265 (1978): Supreme Court case striking down UC Davis medical school's 16-seat minority set-aside while allowing race as a plus factor; Powell's solo opinion governed until SFFA (2023).
REGENXBIO
REGENXBIO Inc., formerly ReGenX, LLC, is a Rockville, Maryland biotechnology company developing AAV gene therapies through its NAV Technology Platform, publicly traded on Nasdaq since 2015.
Reggae
Reggae: Jamaican popular music from the late 1960s, grown from ska and rocksteady, marked by offbeat accents, the skank, one-drop drums, Rastafari-linked lyrics, Bob Marley, and 2018 UNESCO heritage recognition.
Reggae on the River
Reggae on the River is a three-day reggae and camping festival held each summer on the Eel River in Humboldt County, California, first held in 1984.
Reggae Reggae Sauce
Reggae Reggae Sauce is Levi Roots' jerk BBQ sauce with Scotch bonnet and allspice, made famous by his sung 2007 Dragons' Den pitch that won £50,000 from Peter Jones and Richard Farleigh and a Sainsbury's listing.
Reggaeton
Reggaeton (reguetón) is a Spanish-language Caribbean genre fusing Jamaican dancehall's dembow rhythm, named for Shabba Ranks's 1990 "Dem Bow", with hip hop; it formed in Panama and Puerto Rico, broke commercially with "Gasolina" in 2004, and now leads global Latin music consumption.
Reggatta de Blanc
Reggatta de Blanc, The Police's second album (A&M, 2 October 1979), pseudo-French for 'white reggae'; UK number-one album whose singles 'Message in a Bottle' and 'Walking on the Moon' topped the UK chart, with the title track winning the 1981 Grammy for Best Rock Instrumental Performance.
Regge calculus
Regge calculus is a formulation of general relativity, introduced by Tullio Regge in 1961, in which curved spacetime is approximated by a piecewise-flat lattice with curvature concentrated on triangles.
Regge theory
Regge theory describes high-energy scattering through Regge poles, moving singularities in the complex angular momentum plane, introduced by Tullio Regge and extended to particle physics by Chew, Frautschi, Gribov, and Pomeranchuk.
Regge–Wheeler equation
The Regge–Wheeler equation, derived by Tullio Regge and John Wheeler in 1957, is a Schrödinger-type wave equation governing odd-parity gravitational perturbations of the Schwarzschild black hole spacetime.