All articles starting with R
22,461 articles
Riboswitch
A riboswitch is a regulatory segment of messenger RNA that binds a specific small molecule without proteins and switches metabolic genes on or off, mostly in bacteria.
Ribotyping
Ribotyping is a molecular typing method that identifies bacterial strains by analyzing restriction fragment length polymorphisms of ribosomal RNA genes, introduced by F. Grimont and P.A.D. Grimont in 1986.
Riboviria
Riboviria is the ICTV realm grouping RNA viruses and retroviruses, created in 2019 as the first realm, spanning five Baltimore classes and the kingdoms Orthornavirae and Pararnavirae.
Ribozyme
Ribozyme: catalytic RNA enzyme, also called RNA enzyme or catalytic RNA. Discovered by Cech and Altman (1989 Nobel Prize); natural classes include hammerhead, hairpin, HDV, VS, group I/II introns, and RNase P; the ribosome's rRNA is a ribozyme.
RIBS VI trial
RIBS VI (NCT02672878) was a Spanish multicenter study of bioresorbable vascular scaffolds for coronary in-stent restenosis; BVS matched drug-coated balloons at 1 year but showed higher 3-year revascularization and thrombosis, inferior to drug-eluting stents.
RIBS VII study
RIBS VII (Restenosis Intrastent: Treatment of Bioresorbable Vascular Scaffolds Restenosis, NCT03167424) is a Spanish prospective multicenter registry of 117 patients treated for bioresorbable scaffold restenosis, showing one-year outcomes comparable to metallic-stent restenosis cohorts RIBS IV and V.
Ribulokinase
Ribulokinase (L-ribulokinase, AraB, EC 2.7.1.16) is an FGGY-family bacterial kinase that phosphorylates L-ribulose to L-ribulose 5-phosphate in arabinose catabolism; a dimer of 98 kDa that also phosphorylates ribitol and arabitol.
Ribulose
Ribulose is a five-carbon ketose sugar (ketopentose) with D and L stereoisomers, best known as the backbone of RuBP, the carbon dioxide acceptor in the Calvin–Benson cycle.
Ric Flair
Ric Flair, born Richard Morgan Fliehr and known as "The Nature Boy," is a retired American wrestler who won a record 16 World Heavyweight Championships across the NWA, WCW, and WWE.
Ric Grech
Ric Grech (Richard Roman Grechko, 1946–1990) was a British bassist and violinist in Family, Blind Faith, Traffic, and Ginger Baker's Air Force, later a session player and Gram Parsons producer who died at 43.
Ric N. Price
Ric N. Price (Richard Price) is a clinician-scientist and professor at the Menzies School of Health Research and the University of Oxford, the world's leading clinical expert on vivax malaria.
Ric Ocasek
Ric Ocasek (Richard Theodore Otcasek, 1944-2019), American songwriter, guitarist, and producer; frontman and chief songwriter of new wave band the Cars, later producer of Weezer, Bad Brains, and Suicide; Rock & Roll Hall of Fame inductee, 2018.
Ric Prado
Ric Prado (Enrique Prado, born 1950) is a Cuban exile who became a CIA paramilitary officer, Contra trainer, Bin Laden Task Force co-founder, Counterterrorist Center Chief of Operations during 9/11, Blackwater VP, and author of the 2022 memoir Black Ops.
Ric Rojas
Ric Rojas (Rick Rojas), born 1952, American distance runner; set 15 km road world bests of 43:41 (1978) and 43:12 (1981), won the inaugural Bolder Boulder 10K in 1979, and is the father of marathoner Nell Rojas.
Rica Reinisch
Rica Reinisch is a German former backstroke swimmer who won three Olympic gold medals for East Germany at the 1980 Moscow Games, all in world-record times, before retiring from competition at a young age.
Ricaniidae
Ricaniidae (ricaniid planthoppers), family Amyot & Serville 1843 in Fulgoroidea, about 67-69 genera and 437-442 species in warm temperate and tropical regions; triangular membranous tegmina, pest species such as Ricania speculum, sister-group relationships with Flatidae debated.
Ricard (liqueur)
Ricard is a French pastis, an anise and licorice aperitif created by Paul Ricard in Marseille in 1932, bottled at 45% ABV, diluted with water, and now owned by Pernod Ricard after the 1975 merger.
Ricarda Funk
Ricarda Funk, German slalom kayaker (born 1992, Bad Neuenahr-Ahrweiler), KSV Bad Kreuznach. Olympic K1 gold Tokyo 2020, world champion 2021 and 2022, five-time European champion, 2025 kayak cross World Cup champion.
Ricarda Huch
Ricarda Huch (1864–1947) was a German poet, novelist, and historian, the first woman elected to the Prussian Academy of Arts' poetry section and a public opponent of the Nazi regime.
Ričardas Gavelis
Ričardas Gavelis (1950–2002) was a Lithuanian prose writer, playwright, and publicist whose 1989 novel Vilnius Poker is considered a landmark of Lithuanian postmodern fiction.
Ricardian equivalence
Ricardian equivalence is the proposition that financing government spending by debt rather than taxes leaves aggregate demand unchanged, since households save to pay future taxes.
Ricardinho
Ricardinho (Ricardo Filipe da Silva Braga, born 1985), Portuguese futsal winger nicknamed O Mágico; six-time world best player, 187 caps and 141 goals for Portugal, UEFA Futsal EURO 2018 captain and 2021 World Cup winner; distinct from the Brazilian volleyball setter and blind footballer of the same nickname.
Ricardo Araya Baltra
Ricardo Araya Baltra is a Chilean psychiatrist, Professor of Global Mental Health at King's College London, known for his 2003 Lancet trial on treating depression in primary care.
Ricardo Arjona
Ricardo Arjona (Édgar Ricardo Arjona Morales, born 1964, Jocotenango, Guatemala) is a Latin pop singer-songwriter who has sold over 80 million records, won the 2007 Grammy for Best Latin Pop Album with Adentro, founded the label Metamorfosis in 2011, and is known for narrative songs like Historia de taxi.
Ricardo B. Schwarz
Ricardo B. Schwarz, who publishes as Ricardo Blum Schwarz, is a materials physicist and LANL Fellow at Los Alamos National Laboratory known for bulk metallic glasses.
Ricardo Balbín
Ricardo Balbín (1904–1981) was an Argentine lawyer and politician who led the Radical Civic Union and ran four times for president of Argentina, losing each time.
Ricardo Bressani
Ricardo Bressani (1926–2015) was a Guatemalan food scientist and nutritionist who spent 39 years at INCAP in Guatemala City and developed Incaparina, an all-vegetable protein mixture.
Ricardo Cabrera
Ricardo Cabrera is an American politician, the Republican nominee for the U.S. House in California's 51st Congressional District in 2026, who owns a cybersecurity company.
Ricardo Carvalho
Ricardo Carvalho (Ricardo Alberto Silveira de Carvalho, born 1978, Amarante) is a Portuguese former centre-back and current coach; 89 Portugal caps, Euro 2016 winner, Porto, Chelsea, Real Madrid defender, later Marseille and Portugal assistant.
Ricardo Castellar de Faria
Ricardo Castellar de Faria (born 1975) is a Brazilian entrepreneur who founded Granja Faria, Brazil's largest commercial egg producer, and Global Eggs, an international egg holding.