All articles starting with O
9,097 articles
Ole Østervold
Ole Østervold (Ole Olai Olsen Østervold, 1872–1936), Norwegian sailor from Austevoll; won 1920 Antwerp Olympic gold in 12-metre (1907 rating) class aboard Atlanta with brothers Henrik, Jan, and Kristian, the first four brothers to win Olympic gold together.
Ole Rømer
Ole Rømer, also known as Ole Christensen Rømer or Olaus Roemer, was a Danish astronomer who in 1676 first demonstrated observationally that light travels at a finite speed.
Ole Sæther
Ole Sæther, full name Ole Andreas Sæther, was a Norwegian sport shooter who competed at the 1900, 1908, and 1912 Olympics and won four free rifle medals.
Ole Sarvig
Ole Sarvig (1921–1981) was a Danish writer and one of the central Danish lyric poets of the twentieth century, known for religiously toned poetry expressing cultural crisis after World War II.
Ole Seehausen
Ole Seehausen is a Swiss-based evolutionary ecologist, professor at the University of Bern and Eawag researcher, known for studying how cichlid fishes in the African Great Lakes form new species.
Ole Sørensen
Ole Sørensen (Ole Toft Sorensen, born 1948, Randers, Denmark) is a Danish-born Canadian Greco-Roman wrestler, 1972 Munich Olympian, 1970 Commonwealth Games bronze medallist, and father of bobsledder Cody Sorensen.
Ole-Johan Dahl
Ole-Johan Dahl was a Norwegian computer scientist who, with Kristen Nygaard, created the Simula languages at the Norwegian Computing Center, introduced object-oriented programming, and won the 2001 Turing Award.
Olé, Olé, Olé
Olé, Olé, Olé is a worldwide football chant from the 1985 Belgian song "Anderlecht Champion" by Grand Jojo and Roland Verlooven; "Allez" became "Olé" for the 1986 Mexico World Cup, later a Japan number 1 and Stromae remix subject.
Olea
Olea is a genus of about 32 evergreen Oleaceae trees and shrubs of the Old World, including the olive Olea europaea with six subspecies, over 1,000 cultivars, and the wild oleaster var. sylvestris.
Oleaceae
Oleaceae, the olive family (Hoffmanns. & Link, 1809), is a family of Lamiales with 25-27 genera and c. 600-615 species of trees, shrubs, and woody climbers, including Olea europaea, Fraxinus, Jasminum, and Syringa, recognized by opposite estipulate leaves and 4-merous flowers with 2 stamens.
Oleandomycin
Oleandomycin is a macrolide antibiotic produced by the soil bacterium Streptomyces antibioticus, isolated in 1954 at Pfizer, marketed as Matromycin and Romicil, and active against gram-positive bacteria.
Oleanolic acid
Oleanolic acid is a naturally occurring pentacyclic triterpenoid found widely in food plants and medicinal herbs, especially olives, and studied for liver-protective, anti-inflammatory, antidiabetic, and anticancer activities.
Olearia
Olearia (daisy bush), genus of evergreen Asteraceae shrubs and small trees, about 180 species in Australia, New Zealand, and New Guinea; shown polyphyletic since 2002 and being split into Shawia and other genera.
Oleate hydratase-like
Oleate hydratase-like (Ohy, EC 4.2.1.53, MCRA family): FAD-dependent bacterial enzymes hydrating oleic acid to (R)-10-hydroxystearic acid; 11 HFam families, structural FAD cofactor, biocatalysis for 10-HSA.
Oleclumab
Oleclumab (MEDI9447) is AstraZeneca/MedImmune's human anti-CD73 monoclonal antibody that blocks adenosine-mediated immunosuppression; tested with durvalumab in NSCLC (COAST, PACIFIC-9), pancreatic, colorectal, and breast cancer trials.
Olecranon
Olecranon: the proximal ulnar projection forming the bony tip of the elbow, triceps insertion site; prone to fracture (Mayo classification, ORIF or tension band wiring) and olecranon bursitis.
Olecranon bursitis
Olecranon bursitis, also called elbow bursitis or miner's elbow, is inflammation of the fluid-filled sac over the elbow tip, usually from repeated pressure; septic forms (20-33%) need antibiotics, most cases resolve conservatively in 3-6 weeks.
OLED
OLED, or organic light-emitting diode, is a device whose thin carbon-based layer emits light under current; each pixel generates its own light, enabling true black and flexible panels.
OLED encapsulation
OLED encapsulation is the set of materials and structures that seal an organic light-emitting diode (OLED) against water vapor, oxygen, heat, and mechanical stress, which rapidly degrade the device.
Olefin isomerization
Olefin isomerization is the catalytic rearrangement of an alkene without changing its molecular formula, most often by double-bond migration or interconversion of E and Z isomers.
Olefin metathesis
Olefin metathesis, also called alkene metathesis, is a catalytic reaction in which two alkenes exchange the groups around their double bonds, used widely in organic synthesis and polymer chemistry.
Olefin oligomerization
Olefin oligomerization is the catalytic joining of a few alkene molecules, most often ethylene, into short chains, the dominant industrial route to linear alpha olefins used in detergents, lubricants, and polyethylene.
Olefin purification
Olefin purification is the separation of light olefins like ethylene and propylene from chemically similar paraffins and impurities, aiming to replace energy-intensive cryogenic distillation with selective MOF adsorbents.
Oleflex
Oleflex is a Honeywell UOP licensed catalytic dehydrogenation process converting propane into propylene over a moving-bed platinum catalyst, first commercialized at a Thai plant in 1990.
Oleg (Олег)
Oleg (Олег) is a Russian masculine given name from Old Norse Helgi ("holy, sacred"), borne by the 9th-century Varangian prince of Kyiv; related forms include Oleh, Aleh, and Helge; 5th most common name in Russia but declining among newborns.
Oleg Blokhin
Oleg Blokhin (Олег Блохін), born 1952 in Kyiv, Ukrainian forward, 1975 Ballon d'Or winner, record scorer for Dynamo Kyiv and the USSR, later Ukraine's 2006 World Cup quarter-final coach.
Oleg Bozhev
Oleg Bozhev (Олег Фелевич Божьев), Soviet speed skater born 1961 in Moscow; 1984 Olympic 1,500 m bronze, 1984 World All-round champion, 1,500 m world record 1:53.26; later Russian national head coach.
Oleg Butkovic
Oleg Butković is a Croatian politician of the Croatian Democratic Union who serves as Deputy Prime Minister and Minister of Maritime Affairs, Transport and Infrastructure, the government's longest-serving minister.
Oleg Cassini
Oleg Cassini (1913-2006), American fashion designer of Russian-Italian aristocratic origin, official couturier to Jacqueline Kennedy, Hollywood costume designer, and pioneer of designer name licensing.
Oleg D. Jefimenko
Oleg D. Jefimenko (1922–2009) was an American physicist at West Virginia University known for Jefimenko's equations and for electrostatic motors powered by the earth's atmospheric electric field.