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Base (chemistry)
A base is a chemical species that accepts a proton from an acid, defined as one half of acid-base chemistry; common strong bases include sodium hydroxide and potassium hydroxide.
Base and superstructure
Base and superstructure: the Marxist model from Marx's 1859 Preface in which the economic structure of production relations determines the legal, political, and ideological superstructure, with debates over determinism, autonomy, and culture.
Base Boy Entertainment Network Inc
Base Boy Entertainment Network Inc is a Santa Monica, California music and media company founded by Juavona Gallien in 2023, operating the BaseBoyEnt app that pays gig workers in stock rather than cash.
Base calling
Base calling is the computational step that converts a DNA sequencer's raw signal, such as image intensities or electrical current, into a nucleotide sequence with a per-base quality score.
Base Composition
Base composition, also called base ratio or GC content, is the relative amounts of purines and pyrimidines in a nucleic acid; in double-stranded DNA A = T and G = C (Chargaff's rules), and GC content varies widely between species.
Base editing
Base editing is a genome editing technique that converts one DNA base into another using a deaminase fused to impaired CRISPR–Cas9, without double-strand breaks or donor templates.
Base erosion and profit shifting
Base erosion and profit shifting (BEPS) is multinational tax avoidance via profit shifting to low-tax jurisdictions, addressed by the OECD/G20 BEPS Project, its 15-action 2015 package, the Inclusive Framework, and the Two-Pillar global minimum tax.
Base excess
Base excess, also called base deficit or standard base excess, is a measure of the metabolic component of an acid–base disorder, reported with arterial blood gas results since 1960.
Base Excision Repair
Base excision repair (BER) is a cellular DNA repair pathway that removes small base lesions from oxidation, deamination, and alkylation, discovered by Tomas Lindahl, who won the 2015 Nobel Prize in Chemistry.
Base flood elevation
Base flood elevation is the height floodwater is expected to reach in a 100-year flood, the reference for US floodplain rules, building codes, and insurance.
Base isolation
Base isolation is a seismic protection technique that places flexible bearings between a building or bridge and its foundation, reducing the earthquake forces transmitted to the structure.
BASE jumping
BASE jumping is parachuting from fixed objects: buildings, antennae, spans, and earth. Formalized by Carl Boenish in 1978 at Yosemite's El Capitan; far riskier than skydiving, with 540 deaths since 1981.
Base level
Base level is the lowest elevation to which a stream can erode its bed, a fundamental concept in fluvial geomorphology defined by John Wesley Powell in 1875.
Base Line Cay
Base Line Cay is a small island (cay) in South Andros District, Bahamas, at 24.06667°N, 77.68333°W, elevation about 4 m, near Kemps Bay and Congo Town; GeoNames ID 3572859, Wikidata Q21713633.
Base pair
A base pair, also called a nucleotide pair, is two nucleotide bases joined by hydrogen bonds across the strands of DNA or RNA, the standard unit for measuring genome length.
Base parameter regression
Base parameter regression identifies a robot's dynamics through a minimal set of linearly independent parameter combinations, called base parameters, making the least-squares estimation problem well posed.
Base Power (company)
Base Power is an American energy company founded in Austin, Texas, in 2023 by Zach Dell and Justin Lopas that combines retail electricity with home battery backup.
Base rate fallacy
The base rate fallacy, also called base rate neglect, is a cognitive error in which people judge probability from case-specific evidence while underweighting how common the event is.
Base Set (Pokémon)
Base Set (拡張パック) is the first Pokémon TCG expansion, 102 cards, Japan October 20 1996, English January 9 1999. Print runs: 1st Edition, Shadowless, Unlimited, 1999-2000; Charizard #4 is its most valuable card.
Base stacking
Base stacking is the face-to-face association of adjacent nucleobases in nucleic acids, which along with hydrogen bonding stabilizes the DNA double helix and folded RNA structures.
Base station
A base station, also called a radio base station, is the fixed radio equipment of a mobile network, transmitting and receiving signals to devices within one cell.
Base station controller
A base station controller (BSC) is the GSM network element that manages one or more base transceiver stations and sits between them and the core network, controlling radio resources.
Base transceiver station
A base transceiver station (BTS) is the fixed radio equipment in a cellular network that handles the radio link to mobile devices, serving one or more cells.
Base-catalyzed depolymerization of lignin
Base-catalyzed depolymerization of lignin is a chemical process that cleaves lignin's ether bonds in hot alkaline water to yield phenolic compounds, though repolymerization typically limits monomer yields to below 10%.
Base-frame calibration
Base-frame calibration is the process of determining a robot's base coordinate frame relative to a world or measuring frame, enabling offline programming, multi-robot coordination, and accurate computed positions.
Base-plus-offset addressing
Base-plus-offset addressing is a processor addressing mode that computes an operand's effective address by adding an instruction's constant offset to a base register, letting compilers access structure fields, stack variables, and array elements.
Base10 (venture capital firm)
Base10 Partners, usually shortened to Base10, is a San Francisco venture capital firm founded in 2018 by Adeyemi Ajao and TJ Nahigian that backs startups automating the real economy.
Base10 Advancement Initiative
The Base10 Advancement Initiative is a late-stage venture fund of San Francisco firm Base10 Partners, launched in 2021 to donate half its carried interest to historically Black colleges and universities.
Base10 Partners
Base10 Partners is a San Francisco venture capital firm founded by Adeyemi Ajao and TJ Nahigian that invests from seed through Series B in companies automating the real economy.
Base32
Base32 is a binary-to-text encoding that represents arbitrary binary data with 32 printable symbols, each carrying 5 bits; RFC 4648's alphabet uses A–Z and 2–7 with equals-sign padding.