All articles starting with a number or symbol
13,599 articles
Øjvind Winge
Øjvind Winge (1886–1964) was a Danish geneticist and mycologist, called the father of yeast genetics, who proved sexual reproduction in yeast while directing the Carlsberg Laboratory's physiology department from 1933 to 1956.
Øresund
Øresund (the Sound) is the 118 km strait between Denmark and Sweden linking the Baltic Sea and Kattegat, site of the Sound Toll (c. 1429–1857) and the 2000 Øresund Bridge between Copenhagen and Malmö.
Øresund Aquarium
Øresund Aquarium (Øresundsakvariet), founded 1972 in Helsingør, is a small saltwater aquarium of the University of Copenhagen's Department of Biology showing local Øresund and Kattegat marine life, with biotope, themed, and touch tanks, a Water Laboratory, and RIB sea safaris.
Øresund Bridge
The Øresund Bridge (Öresundsbron) is a combined railway and motorway link across the Øresund strait between Copenhagen, Denmark, and Malmö, Sweden, opened on July 1, 2000.
Øresund Region
The Øresund Region (Øresundsregionen, Öresundsregionen) is a cross-border metropolitan region around Copenhagen and Malmö, joined by a bridge since 2000, with 4.55 million inhabitants in 2024.
Ørsted Dal, Pingel Dal and Enhjørningen Dal
Ørsted Dal, Pingel Dal and Enhjørningen Dal, Ramsar Site no. 2021 in Kommuneqarfik Sermersooq, East Greenland: three valleys designated 8 June 2011, 196,000 ha of high-Arctic valley wetlands with geese, muskox, and endemic plants.
Øst Frigg
Øst Frigg is a shut-down Norwegian North Sea gas field, east of Frigg, which produced gas from 1988 to 1997 and is being redeveloped as part of Yggdrasil.
Østfold fylke
Østfold fylke, a county in southeastern Norway between the Oslofjord and the Swedish border, restored 1 January 2024 from the split of Viken; 12 municipalities, seat Sarpsborg, about 316,000 inhabitants, largest municipality Fredrikstad.
Øvre Stabu
Øvre Stabu, farm in Østre Toten, Oppland, Norway; findspot of the early runic lance head inscribed raunijaz (KJ31, AD 210–240), an ambiguous bronze fibula inscription, and the Stabu picture stone.
Øystein Ore
Øystein Ore (1899–1968) was a Norwegian-born mathematician who spent his career at Yale, working in algebra, lattice theory, graph theory, and the history of mathematics.
ß
ß (Eszett, scharfes S, sharp S) is a lowercase-only letter of the German alphabet pronounced as a voiceless s-sound. It arose from ligatures of long s with z (Fraktur) or s (Antiqua), is written after long vowels and diphthongs, is replaced by ss in Switzerland and Liechtenstein, and gained an official uppercase ẞ in 2017.
Þeistareykir geothermal station
Þeistareykir geothermal station (Þeistareykjastöð) is a 90 MW geothermal power plant in northeast Iceland on the Reykjaheiði heath, owned by Landsvirkjun and opened in 2017.
Þiðreks saga af Bern
Þiðreks saga af Bern is a 13th-century Old Norse prose saga retelling the German heroic legends of Dietrich of Bern, around 1250, probably in Bergen.
Þingvellir National Park
Þingvellir National Park (Thingvellir), Iceland: site of the Alþing general assembly (c. 930–1798), UNESCO World Heritage Site since 2004, and a Mid-Atlantic Ridge rift valley with Lake Þingvallavatn and the Silfra fissure.
Þórarinn Eldjárn
Þórarinn Eldjárn (born 1949) is an Icelandic poet, novelist, short-story writer, and translator who has published dozens of books since his 1974 debut, best known for humorous children's poetry with his sister Sigrún Eldjárn.
Þorbjörg Sigríður Gunnlaugsdóttir
Þorbjörg Sigríður Gunnlaugsdóttir (born 1978) is an Icelandic Liberal Reform Party politician and former prosecutor serving as Minister of Justice since December 2024.
Þorgerður Katrín Gunnarsdóttir
Þorgerður Katrín Gunnarsdóttir (born 1965) is an Icelandic politician and lawyer, chairwoman of Viðreisn (Liberal Reform Party) since 2017 and Minister for Foreign Affairs since 21 December 2024; earlier education minister 2003-2009, fisheries minister 2017, and effective leader of the Haarde government during the 2008 banking collapse.
Þórsdrápa
Þórsdrápa ("Thor's Poem") is a skaldic poem in dróttkvætt meter by the Icelander Eilífr Goðrúnarson, from the late tenth century, telling of Thor's perilous journey to the giant Geirrøðr's hall.
Þrymskviða
Þrymskviða, "The Lay of Þrymr", is a comic Eddic poem in which Thor recovers his stolen hammer by disguising himself as Freyja at a giant's wedding.
Þula
A þula (plural þulur) is a versified list-poem in Old Icelandic poetry, usually in fornyrðislag meter, stringing together names of one class of things for memorization and recitation.
ʿUqdat al-Bakrah
ʿUqdat al-Bakrah, also known as Safah, is a large Early Iron Age metal-working atelier on the eastern edge of the Rub al-Khali desert in Oman.
ǀXam language
ǀXam, also written /Xam, was a Tuu family click language of South Africa, extinct by the early 20th century and preserved in the Bleek and Lloyd notebooks.
ǂKhomani Cultural Landscape
ǂKhomani Cultural Landscape, a South African UNESCO World Heritage site (inscribed 2017, criteria v and vi) coinciding with the Kalahari Gemsbok National Park (959,100 ha), associated with the ǂKhomani San, the last indigenous San community in South Africa.
ǃKung people
ǃKung, now generally called Ju/'hoansi, are San hunter-gatherers of northeastern Namibia and northwestern Botswana, the most studied Bushman group, central to the Kalahari Debate over isolation versus incorporation.
α-Amino C–H functionalization
α-Amino C–H functionalization is a set of reactions that converts the C–H bond on the carbon next to an amine's nitrogen into a new bond, using methods like photoredox and electrocatalysis.
α-Aminoisobutyric acid
α-Aminoisobutyric acid (Aib, also 2-aminoisobutyric acid) is a nonproteinogenic amino acid with two methyl groups at its α-carbon; it stabilizes helices in designed peptides and occurs in drugs like semaglutide.
α-Bungarotoxin
α-Bungarotoxin, abbreviated α-BgTx, is a neurotoxic peptide from the venom of the many-banded krait, isolated in 1963, that became the key tool for isolating and studying nicotinic acetylcholine receptors.
α-Carotene
α-Carotene is a provitamin A carotenoid, a fat-soluble pigment in carrots, pumpkins, and squash that the body converts to vitamin A at about half the efficiency of β-carotene.
α-Copaene
α-Copaene is a tricyclic sesquiterpene hydrocarbon, C₁₅H₂₄, that occurs widely in plant essential oils and acts as a powerful attractant for the Mediterranean fruit fly and redbay ambrosia beetle.
α-FAPbI3 phase stabilization
α-FAPbI3 phase stabilization is the set of strategies keeping formamidinium lead triiodide, a leading perovskite solar-cell material, in its photoactive black phase rather than its yellow δ-phase.