All articles starting with O
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O Povo Brasileiro
O Povo Brasileiro is a 1995 book by the Brazilian anthropologist Darcy Ribeiro, published by Companhia das Letras, arguing that Indigenous, European, and African matrices formed a single Brazilian people.
O Quase Fim do Mundo
O Quase Fim do Mundo is a 2008 dystopian novel by the Angolan writer Pepetela, in which a weapon kills nearly all humans and animals on Earth.
O Quinze
O Quinze is a 1930 novel by Brazilian writer Rachel de Queiroz, her debut, depicting the great 1915 drought in Ceará and the hunger and forced migration it caused.
O Rappa
O Rappa is a Brazilian band from Rio de Janeiro, formed in 1993, that blends reggae, rock, rap, dub, and samba and is fronted by vocalist Marcelo Falcão.
O Rei da Vela
O Rei da Vela (The Candle King) is a three-act play by Brazilian modernist Oswald de Andrade, written in 1933, that satirizes usury and Brazil's dependence on American imperialism.
O Rio ou Relação da Viagem que Faz o Capibaribe de Sua Nascente à Cidade do Recife
O Rio ou Relação da Viagem que Faz o Capibaribe de Sua Nascente à Cidade do Recife is a 1954 narrative poem by João Cabral de Melo Neto narrated by the Capibaribe River.
O Sertanejo
O Sertanejo is an 1875 novel by the Brazilian writer José de Alencar, set in 1764 in the sertão of Ceará and a foundational work of regionalist fiction.
O Tannenbaum
O Tannenbaum (O Christmas Tree) is a German Christmas song: Zarnack's 1820 love-song stanza plus Anschütz's 1824 Christmas stanzas, on a 16th-century folk melody also used for The Red Flag and Maryland, My Maryland.
O Tempo e o Vento
O Tempo e o Vento (Time and the Wind) is a trilogy of historical novels by Brazilian writer Erico Verissimo, published between 1949 and 1962.
O Tico-Tico
O Tico-Tico was a Brazilian weekly children's magazine published in Rio de Janeiro from 1905 to 1962, regarded as the first Brazilian comics magazine and known for its moral and civic education.
O Uraguai
O Uraguai is a 1769 epic poem by José Basílio da Gama about the war between Portuguese and Spanish forces and the Guaraní of the Jesuit missions.
O visa
O visa, O-1, U.S. nonimmigrant visa for people of extraordinary ability or achievement in sciences, arts, education, business, athletics, or motion picture/TV; created by the Immigration Act of 1990; no cap or lottery; O-2 support and O-3 dependent subcategories.
O viziune a sentimentelor
O viziune a sentimentelor (A Vision of Feelings) is a 1964 poetry collection by Romanian poet Nichita Stănescu, his second book, which won the Writers' Union Prize and includes Leoaică tânără, iubirea.
O_DIRECT
O_DIRECT is a Linux flag passed to open() that makes reads and writes bypass the kernel's page cache, mainly for applications that cache data themselves.
O-6-methylguanine-DNA methyltransferase
O-6-methylguanine-DNA methyltransferase (MGMT, AGT) is a suicide DNA repair enzyme at 10q26.3 that removes O6-alkyl groups from guanine via Cys145; promoter methylation predicts temozolomide benefit in glioblastoma.
o-Anisidine
o-Anisidine (2-methoxyaniline) is an aromatic amine, a yellowish liquid used chiefly as an intermediate in azo dye manufacture, classified as probably carcinogenic to humans by IARC.
O-arm Surgical Imaging System
The O-arm Surgical Imaging System is a mobile x-ray system made by Medtronic that provides 2D fluoroscopy and 3D cone-beam CT imaging during surgery, primarily for spine procedures.
o-Carborane
o-Carborane (1,2-dicarba-closo-dodecaborane) is an icosahedral boron-carbon cluster with adjacent cage carbons, first synthesized from decaborane and acetylene in 1963 and used in drug design, materials, and boron neutron capture therapy.
o-Cresol
o-Cresol, also known as 2-methylphenol, is an organic compound with formula CH₃C₆H₄OH, one of the three cresol isomers, used as a disinfectant, solvent, and chemical intermediate.
O-glycosylation enzyme deficiencies and disease roles
O-glycosylation enzyme deficiencies are human disorders caused by defective or dysregulated O-glycan enzymes, including Tn syndrome from COSMC loss, dystroglycanopathies from POMT defects, and Tn expression in cancer.
O-Hum
O-Hum (اوهام) is an Iranian rock band formed in Tehran in the late 1990s and fronted by Shahram Sharbaf, known for setting Hafez's poetry to rock.
O-linked glycosylation
O-linked glycosylation attaches glycans to Ser/Thr hydroxyls of proteins; mucin-type O-GalNAc (GALNT-initiated, Golgi) and O-GlcNAc (OGT/OGA) are the main forms, with roles in mucins, signaling, cancer, infection, and neurodegeneration.
O-mikuji (おみくじ)
O-mikuji (おみくじ), also called mikuji, is a paper fortune slip drawn at Japanese shrines and temples, ranking luck with advice on love, money, and health.
o-minimality
O-minimality is a tameness condition in model theory requiring every definable set to be a finite union of points and intervals, introduced by van den Dries.
o-Nitrophenol
o-Nitrophenol, also called 2-nitrophenol, is an organic compound with formula C₆H₅NO₃, with nitro and hydroxyl groups adjacent on a benzene ring; its intramolecular hydrogen bond makes it more volatile than the para isomer.
O-o-h Child
"O-o-h Child" is a 1970 soft-soul single by Chicago family group the Five Stairsteps, written by Stan Vincent, Buddah 165; it peaked at No. 8 Hot 100, No. 14 R&B, sold a million copies, and is their signature song.
O-Phenylenediamine
o-Phenylenediamine (benzene-1,2-diamine) is an aromatic diamine with two amino groups on adjacent positions of a benzene ring, used chiefly to make benzimidazole fungicides and pharmaceuticals.
O-RAN Alliance
The O-RAN Alliance is an international standards organization founded in 2018 by AT&T, China Mobile, Deutsche Telekom, NTT DOCOMO, and Orange to develop open specifications for the Radio Access Network.
O-ring
An O-ring, also called a toric joint, is a torus-shaped elastomer seal seated in a groove and compressed between mating surfaces to block liquids or gases.
O-ring theory of economic development
The O-ring theory of economic development is a 1993 model by Michael Kremer in which output is the product, not the sum, of workers' skill levels.