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SIGTRAN
SIGTRAN (Signalling Transport) is an IETF protocol suite, defined in RFC 2719 in 1999, for carrying telephony signaling protocols such as SS7 over IP networks.
Sigue Sigue Sputnik
Sigue Sigue Sputnik, British new wave/glam punk band formed in London in 1982 by ex-Generation X bassist Tony James; hits "Love Missile F1-11" (UK No. 3) and "21st Century Boy"; albums Flaunt It and Dress for Excess.
Siguler Guff Distressed Opportunities Funds
The Siguler Guff Distressed Opportunities Funds are a series of private equity funds managed by New York firm Siguler Guff & Company, targeting distressed companies, asset-backed securities, and whole loans.
Siguler Guff Distressed Real Estate Opportunities Funds
Siguler Guff Distressed Real Estate Opportunities Funds (DREOF) are a series of private equity real estate funds managed from New York, investing in distressed commercial property, mortgages, and CMBS.
Siguler Guff Small Buyout
Siguler Guff Small Buyout is the small and lower-middle-market private equity strategy of New York firm Siguler Guff & Company, run through its Small Buyout Opportunities Funds.
Sigur Rós
Sigur Rós, Icelandic post-rock band formed in Reykjavík in 1994 by Jónsi, Georg Hólm and Ágúst Ævar Gunnarsson; known for bowed guitar, falsetto, Vonlenska, over 10 million albums sold, and the 2023 album ÁTTA.
Sigurd
Sigurd (Sigurðr Fáfnisbani), Norse equivalent of German Siegfried, is the dragon-slaying Völsung hero of the 13th-century Völsunga saga and Poetic Edda, rooted in the 437 destruction of Burgundy by Huns and retold by Wagner, Morris, and Tolkien.
Sigurd A. Sjoberg
Sigurd A. Sjoberg was an American aeronautical engineer who led NASA's flight operations through Apollo, helped return Apollo 13 safely, and was deputy director of the Johnson Space Center from 1972 to 1979.
Sigurd Holter
Sigurd Holter (1886–1963) was a Norwegian sailor with the KNS Oslo club who won gold in the 10-metre (1907 rating) class at the 1920 Antwerp Olympics aboard Eleda, the event's only entrant.
Sigurd Jørgensen
Sigurd Jørgensen (full name Sigurd Gersdorf Jørgensen) was a Norwegian artistic gymnast, born and died in Bergen, who won Olympic gold in the team free system event in 1912.
Sigurd Ring
Sigurd Ring (Sigurðr hringr) is a legendary Scandinavian king of the lost Skjöldunga saga, victor of the Battle of Bråvalla over Harald Wartooth and, in Icelandic tradition, father of Ragnar Lodbrok.
Sigurd Snake-in-the-Eye
Sigurd Snake-in-the-Eye (Sigurðr ormr í auga, Sigurd Orm-i-øje), legendary Danish son of Ragnar Lothbrok and Kraka/Áslaug, born with a snake or ouroboros mark in his eye, ancestor of Harald Fairhair.
Sigurd the Crusader
Sigurd the Crusader (Sigurðr Jórsalafari, c. 1090–1130), king of Norway 1103–1130, sailed in 1107 with 60 ships to Jerusalem, helped Baldwin I take Sidon in 1110, and received a relic of the True Cross.
Sigurður Helgason
Sigurður Helgason (1927–2023) was an Icelandic mathematician at MIT who created the modern theory of the Radon transform, the mathematics behind CT scans, and wrote the classic 1962 book Differential Geometry and Symmetric Spaces.
Sigurður R. Gíslason
Sigurður R. Gíslason is an Icelandic geochemist at the University of Iceland who co-founded CarbFix, storing CO2 as carbonate minerals in basalt, and joined the US National Academy of Sciences in 2024.
Sigurður Þórarinsson
Sigurður Þórarinsson (1912–1983) was an Icelandic volcanologist who founded tephrochronology, the dating of geological and archaeological sequences by volcanic ash layers, coined "tephra", and identified the Landnám settlement layer.
Sigvard Bernadotte
Sigvard Bernadotte, born in 1907 as Prince Sigvard of Sweden, was a Swedish count and designer who lost his royal title through marriage and became a pioneer of Scandinavian industrial design.
Sigvard Ericsson
Sigvard "Sigge" Ericsson (1930–2019), Swedish speed skater, first Swede to win the world allround title (Moscow 1955), European champion 1955, and 1956 Olympic gold medalist at 10,000 m with silver at 5,000 m.
Sigvard Sivertsen
Sigvard Jakob Sivertsen (1881–1963), Norwegian artistic gymnast from Bergen, club Bergens TF; won Olympic silver in the 1908 team event and gold in the 1912 free system team event.
Sigve Lie
Sigve Lie (1906–1958), Norwegian sailor with KNS Oslo; won two Olympic gold medals in the Dragon three-person keelboat aboard Pan with Thor Thorvaldsen and Håkon Barfod at London 1948 and Helsinki 1952.
Sigvotatug vedotin
Sigvotatug vedotin (PF-08046047, SGN-B6A) is Pfizer/Seagen's investigational integrin beta-6-directed antibody-drug conjugate with MMAE payload for NSCLC; its phase 3 SigVie-002 trial missed overall survival versus docetaxel, while frontline combination trials with pembrolizumab continue.
Sigyn
Sigyn (Old Norse Sigyn) is the Norse goddess wife of Loki, mother of Narfi, attested in the Poetic and Prose Eddas and skaldic poetry. Her defining myth is holding a bowl to catch snake venom dripping on the bound Loki, whose writhing causes earthquakes.
SiHa
SiHa (CVCL_0032, ATCC HTB-35) is an HPV16-positive human cervical squamous cell carcinoma cell line established in 1970 from a 55-year-old Japanese patient, widely used in cervical cancer research.
Sihai Chongming (四海重明)
Sihai Chongming (四海重明, Love's Rebellion) is a 2024 Chinese xianxia romance drama adapted from Yi Daixue's novel, starring Jing Tian and Zhang Linghe, 36 episodes, aired on Mango TV and iQIYI.
Sihai Yang⧫
Sihai Yang (杨四海) is a Chinese inorganic chemist, Chair Professor at Peking University since 2023, known for neutron-scattering studies of gas binding in metal–organic frameworks.
Sihâm-ı Kazâ
Sihâm-ı Kazâ (Arrows of Destiny) is the anthology of satirical verse by the Ottoman poet Nef'î, regarded as the most famous satire in classical Turkish literature.
Sihanouk Trail
The Sihanouk Trail was a supply network in Cambodia used by North Vietnamese and Viet Cong forces during the Vietnam War, closed after the 1970 coup.
Sihanoukville Autonomous Port
Sihanoukville Autonomous Port (Khmer: កំពង់ផែស្វយ័តក្រុងព្រះសីហនុ), commonly abbreviated PAS, is Cambodia's only deep-sea commercial port, opened in 1960 and handling roughly three-quarters of national seaborne trade.
Sihanoukville CIIDG power station 2
Sihanoukville CIIDG power station 2 (西哈努克港2×350MW燃煤电站项目) is a 700 MW coal-fired power plant in Preah Sihanouk Province, Cambodia, jointly owned by China Huadian and CIIDG; fully operational since December 2022, it is Cambodia's largest power station.
Sihasak Phuangketkeow
Sihasak Phuangketkeow is a Thai career diplomat serving as Deputy Prime Minister and Minister of Foreign Affairs since 2025, after serving as Vice Minister and ambassador to Japan, France, and the UN in Geneva.