All articles starting with S
44,216 articles
SDF (file format)
SDF, or Structure-Data File, is a plain-text chemical file format developed by MDL in the 1980s that stores molecular structures together with tagged data fields.
SDF–Syrian transitional government clashes (2025–2026)
Armed clashes (December 2025–February 2026) between the Kurdish-led SDF and Syria's transitional government after the March 2025 integration agreement stalled; government forces overran most SDF territory, leading to January 2026 ceasefire deals and the SDF's August 2026 dissolution.
SDHA
SDHA (HGNC:10680, OMIM 600857) encodes the flavoprotein subunit of mitochondrial complex II (succinate dehydrogenase). Biallelic variants cause Leigh syndrome; heterozygous variants low-penetrantly predispose to phaeochromocytoma, paraganglioma, and GIST.
SDHB
SDHB (succinate dehydrogenase complex iron sulfur subunit B), also PGL4, is a tumor suppressor gene at 1p36.13 encoding the iron-sulfur subunit of mitochondrial complex II; germline variants cause hereditary paraganglioma-pheochromocytoma with high metastatic risk.
SDHD
SDHD (succinate dehydrogenase complex subunit D, PGL1) is a gene at 11q23 encoding a membrane anchor of mitochondrial complex II; paternally inherited pathogenic variants cause multifocal, usually benign head and neck paragangliomas with under 5% metastatic risk.
SDIC Power Holdings
SDIC Power Holdings Co., Ltd. (国投电力) is a Chinese power generator listed in Shanghai and London, controlled by state-owned SDIC Group and describing itself as China's third-largest listed hydropower company.
SDM (rapper)
SDM is the stage name of Beni Mosabu, a French rapper from Clamart near Paris who broke through in 2019 and signed to Booba's label 92i.
SDM-IBD trial
The SDM-IBD trial is a planned pilot study at Children's Hospital in London, Ontario, testing shared decision making for children with inflammatory bowel disease starting biologic therapy.
Sdok Kok Thom inscription
The Sdok Kok Thom inscription (សិលាចារឹកស្តុកកក់ធំ), cataloged as K. 235, is a Sanskrit and Old Khmer stele of 1052 recounting the founding of the devaraja cult.
SDR-4X
The SDR-4X was a prototype small biped entertainment robot announced by Sony in 2002, the fourth model in its SDR humanoid series and the direct predecessor of QRIO.
SDS Sigma 7
The SDS Sigma 7 was a 32-bit word-oriented mainframe announced by Scientific Data Systems in 1966, the largest Sigma model at introduction and an IBM System/360 competitor.
SDS-PAGE
SDS-PAGE (sodium dodecyl sulfate polyacrylamide gel electrophoresis, Laemmli method) separates denatured proteins by molecular weight using SDS's uniform charge coating; standard for western blots, purity checks, and biopharmaceutical QC.
Sds3-like
Sds3-like (SDS3/SUDS3) proteins are conserved corepressor subunits of SIN3 histone deacetylase complexes, stabilizing the 1-2 MDa Sin3L/Rpd3L assembly via coiled-coil dimerization and Sin3A HID binding; loss causes aneuploid cell lethality.
SDSS1335+0728
SDSS1335+0728, nicknamed Ansky, is a galaxy about 300 million light-years away in Virgo whose central black hole woke up in December 2019 after decades of quiescence.
Sdui
Sdui, also known as Sdui GmbH, is a German edtech startup founded in Koblenz in 2018 by Daniel Zacharias and Jan Micha Kroll, serving schools and daycare centers.
SDXL
SDXL (Stable Diffusion XL) is a text-to-image latent diffusion model developed by Stability AI, whose 3-billion-parameter base model was released openly in July 2023 under the OpenRAIL++-M license.
SDXL Turbo
SDXL Turbo is a distilled version of Stability AI's SDXL 1.0 text-to-image model, released in November 2023, that generates a 512×512 image from a text prompt in one step.
Se Acabó La Fiesta
Se Acabó La Fiesta (SALF, "The Party Is Over") is the Spanish far-right antisystem grouping of Alvise Pérez; in the 2024 European election it won 800,763 votes (4.58%) and three non-attached MEP seats, registered as a party on 31 January 2025, and fractured in 2025.
Se Eu Fosse Você
Se Eu Fosse Você (If I Were You) is a 2006 Brazilian body-swap comedy directed by Daniel Filho, starring Tony Ramos and Glória Pires as a married couple who trade bodies; it was Brazil's top film of 2006 with 3.6 million admissions and spawned a 2009 sequel, a TV series, a musical, and a 2026 third film.
Sé Girdan
Sé Girdan (Se Girdan) is a cemetery of eleven Early Bronze Age Maikop-type burial tumuli near Cheshme Göl in the Ushnu valley, northwestern Iran, excavated 1968-1970 by Oscar White Muscarella and re-dated from Iron III to the late 4th-3rd millennia BC.
Se Maktub
Se Maktub (سه مکتوب, "Three Letters") is a treatise by Mirza Aqa Khan Kermani that attacks despotism in Iran and helped shape the 1906 Constitutional Revolution.
SE Palmeiras
SE Palmeiras (Sociedade Esportiva Palmeiras), founded 1914 as Palestra Italia, is a São Paulo football club; record 12 Brasileirão titles, 3 Libertadores (1999, 2020, 2021), Allianz Parque home, coached by Abel Ferreira.
SE postcode area
SE postcode area, or South East London postcode area, is a Royal Mail postcode area with 29 districts (SE1 to SE28 plus non-geographic SE1P), one post town (LONDON), covering south-east London from Bankside to Thamesmead.
Se pu = Chinese journal of chromatography
Chinese Journal of Chromatography (色谱, Se Pu), monthly journal founded 1984, sponsored by the Chinese Chemical Society and Dalian Institute of Chemical Physics, CAS; ISSN 1000-8713; publishes Chinese-language chromatography research with English abstracts.
Se-Jin Lee
Se-Jin Lee is a physician-scientist and muscle biologist who discovered myostatin, the protein that restrains muscle growth, and was elected to the National Academy of Sciences in 2012.
Se‐Hee Lee
Se-Hee Lee is a battery materials scientist and Professor of Mechanical Engineering at the University of Colorado Boulder, and a co-founder of the solid-state battery company Solid Power.
Se7en (singer)
Seven (세븐), born Choi Dong-wook (최동욱), is a South Korean R&B and pop singer who debuted under YG Entertainment in 2003 and became widely popular across Asia.
Se7en Wetlands
Se7en Wetlands is a 1,640-acre constructed treatment wetland in Lakeland, Florida, providing tertiary wastewater treatment since 1987 on former phosphate mine land, opened as a public park in 2018 with trails, wildlife, and an education center project.
Sea
A sea is a large saltwater body smaller than an ocean, usually at the land-ocean margin and partially enclosed by land; the Sargasso Sea, defined only by currents, is the exception. Covers tides, currents, waves, climate role, and human use.
Sea algae extract
Sea algae extract (EU ID 1126, formerly sea-algae extract and seaweeds) is a complex seaweed-derived mixture, an EU plant growth regulator active substance approved 2009-2019 and now not approved, used widely as a crop biostimulant.