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Slowinski Biosphere Reserve
Slowinski Biosphere Reserve (Słowiński Rezerwat Biosfery), Polish UNESCO MAB site nominated 1976 on the Baltic coast between Leba and Rowy, 112,763 ha, centered on Słowiński National Park and its mobile dunes.
Slowloris (cyberattack)
Slowloris is a denial-of-service attack tool released by researcher RSnake in 2009 that exhausts web servers by holding many incomplete HTTP connections open with little bandwidth.
Slowly changing dimension
A slowly changing dimension (SCD) is a data warehousing technique, introduced by Ralph Kimball in 1996, for managing changes to dimension attributes by overwriting, adding rows, or adding columns.
Slowly pulsating B-type star
A slowly pulsating B-type star, or slow pulsator, is a late-B main-sequence star of 2.5 to 8 solar masses pulsating in gravity modes over roughly 0.5 to 3 days.
Slowly We Rot
Slowly We Rot is the 1989 debut album by Florida death metal band Obituary, recorded at Morrisound in Tampa with Scott Burns and credited with shaping death metal's blueprint.
Slowpoke
Slowpoke (Yadon, ヤドン) is Pokémon #0079, a Water/Psychic 'Dopey Pokémon' from Generation 1. It evolves into Slowbro (level 37) or Slowking (King's Rock trade), and its Galarian Psychic form branches into Poison/Psychic Galarian Slowbro and Slowking.
Slowthai
Slowthai is the stage name of Tyron Frampton (born 1994), an English rapper from Northampton blending grime, punk, and UK hip hop; albums Nothing Great About Britain, Tyron (UK No. 1), and Ugly; acquitted of rape charges in December 2024.
SLP adapter and CSK-interacting membrane protein
SCIMP (SLP adapter and CSK-interacting membrane protein) is a 150-aa palmitoylated transmembrane adaptor of B cells, dendritic cells, and macrophages; a non-TIR scaffold for Lyn, Syk, and Erk1/2 in TLR, MHC-II, and Dectin-1 signaling, driving selective IL-6 and IL-12p40 production.
SLPE Feeder, L.P.
SLPE Feeder, L.P. is a Delaware limited partnership feeder vehicle in a 2025 private equity fund complex managed by Silver Lake, reporting about $1.67 billion sold.
SLPI
SLPI (secretory leukocyte protease inhibitor), an 11.7-kDa epithelial protein with two WAP domains, inhibits neutrophil elastase and cathepsin G, shows antimicrobial and anti-inflammatory activity, and promotes metastasis when overexpressed in cancers.
SLS trial
Scleroderma Lung Study (SLS I, NCT00004563): NIH-sponsored 13-center placebo-controlled trial of oral cyclophosphamide in 158 systemic sclerosis ILD patients; slowed FVC decline, followed by SLS II comparing mycophenolate mofetil.
SLSA (framework)
SLSA (pronounced "salsa"), short for Supply-chain Levels for Software Artifacts, is an OpenSSF security framework defining incremental supply chain security levels, with a Build Track of three levels and a Source Track added in 2025.
SLSII trial
SLS II (Scleroderma Lung Study II) is a randomized controlled trial comparing 2 years of mycophenolate mofetil with 1 year of oral cyclophosphamide in 142 patients with systemic sclerosis-associated interstitial lung disease; both improved lung function equally, with MMF better tolerated.
Słubice
Słubice, a town in Lubusz Voivodeship, western Poland, on the Oder opposite Frankfurt (Oder); formerly Frankfurt's Dammvorstadt suburb, Polish since 1945, seat of Słubice County and home of the first Wikipedia monument. Distinct from the Mazovian Gmina Słubice.
Sludge anaerobic fermentation
Sludge anaerobic fermentation is a biological wastewater treatment process that converts organic matter in waste sludge into volatile fatty acids, used as a renewable carbon source.
Sludge metal
Sludge metal, a fusion of doom metal and hardcore punk also called sludge, arose from Black Flag's My War and the Melvins and crystallized in the New Orleans scene of Eyehategod, Crowbar and Acid Bath.
Sludge thickening
Sludge thickening is a sludge treatment step that removes water from wastewater sludge to reduce volume and lower downstream costs, using gravity, dissolved air flotation, centrifuges, or gravity belts.
Slug
Slug: a gastropod mollusc without an obvious external shell; not a single taxonomic group, since shell loss evolved independently in nudibranchs, sea hares, and terrestrial slugs. Distinguished by vestigial internal shells, adhesive mucus locomotion, and pest status in no-till crops.
Slug (coin)
A slug is a piece of metal, such as a washer or token, substituted for a genuine coin in machines like payphones and parking meters to get service without paying.
Slug (rapper)
Slug is the stage name of Sean Daley (born 1972), Minneapolis rapper and co-founder of the duo Atmosphere with producer Ant, and co-owner of the independent label Rhymesayers Entertainment.
Slug catcher
A slug catcher is a vessel or pipe installation at the end of a multiphase gas pipeline that catches liquid slugs and feeds gas and liquid to processing at manageable rates.
Slug flow
Slug flow is a gas-liquid two-phase flow regime where large, bullet-shaped gas bubbles called Taylor bubbles alternate with liquid slugs in a pipe, notably in oil and gas transport.
Slugg
Slugg is the professional name of Mateo Acosta, a Miami-born, Orlando-based American house DJ and producer who co-founded the label getbusy and plays tech house, minimal, and jackin' house.
Slugging percentage
Slugging percentage (SLG), or slugging average, is baseball's total bases per at-bat, weighting singles 1, doubles 2, triples 3, home runs 4; excludes walks. Career record: Josh Gibson .718.
Slugterra
Slugterra is a Canadian CGI animated series (2012–2016) created by Asaph Fipke, following Eli Shane, who fires transforming slugs from blasters against Dr. Blakk; also a franchise of films, Slugisodes, and Slug it Out 2.
Sluice
A sluice, also called a knife gate or stopgate, is a channel or gated opening that controls water flow in canals, dams, locks, and flood defenses.
Slum
Slum: an urban area with housing lacking improved water, sanitation, adequate space, durability, or tenure security (UN-Habitat definition). 1.16 billion people, one in four urban residents, lived in slums in 2024; upgrading outperforms relocation in cost and outcomes.
Slum Village
Slum Village is a Detroit hip-hop group (early name Ssenepod, also J-88) formed in 1996 by Baatin, T3, and J Dilla; known for Fantastic, Vol. 2 (2000), Trinity, Detroit Deli, and F.U.N. (2024).
Slumberland (film)
Slumberland (2022) is a Netflix family fantasy film directed by Francis Lawrence, starring Jason Momoa as Flip and Marlow Barkley as Nemo, loosely based on Winsor McCay's Little Nemo in Slumberland strip; released theatrically November 11, 2022 and streaming November 18, 2022.
Slumdog Millionaire
Slumdog Millionaire is a 2008 British drama film directed by Danny Boyle, about a Mumbai orphan competing on Who Wants to Be a Millionaire?; it won eight Academy Awards.