42,772 articles
Dodecylbenzene
Dodecylbenzene is a colorless liquid aromatic hydrocarbon, benzene bearing a C12 alkyl chain, produced commercially as mixtures and used chiefly to make the LAS detergent surfactant.
Dog days
The dog days, or Dog Days of Summer, are the hot, sultry days of late July and early August in the Northern Hemisphere, traditionally July 3 to August 11.
Dog whistle
A dog whistle, also called a Galton whistle or silent whistle, is a whistle used in dog training, with ultrasonic versions pitched above most human hearing.
Dolby Digital Plus
Dolby Digital Plus (E-AC-3, DDPlus) is a lossy audio coding system developed by Dolby Laboratories as the successor to Dolby Digital, and it carries Dolby Atmos on most streaming services.
Dolomite (mineral)
Dolomite, also called pearl spar, is a calcium magnesium carbonate mineral with formula CaMg(CO3)2, one of the three most abundant carbonate minerals alongside calcite and aragonite.
Dolomitization
Dolomitization is the geologic process in which calcite in limestone is converted to dolomite by magnesium-rich fluids, producing dolostone, abundant in rocks older than 100 million years.
Dolorimeter
A dolorimeter is an instrument for measuring pain threshold and pain tolerance, most classically the radiant-heat device built by Hardy, Wolff, and Goodell at Cornell in the 1940s.
Dolostone
Dolostone is a carbonate sedimentary rock with more than 50 percent of the mineral dolomite, usually limestone altered by magnesium-rich fluids; it reacts weakly with dilute acid.
Dolutegravir
Dolutegravir, sold as Tivicay, is a second-generation HIV integrase inhibitor approved by the FDA in 2013 and taken once daily; the WHO recommends it as the preferred first-line HIV treatment.
Domain decomposition methods
Domain decomposition methods (DDMs) are numerical methods that solve large systems from discretized partial differential equations by splitting them into smaller subdomain problems, coupled at interfaces and solved in parallel.
Domain growth
Domain growth, also called domain coarsening or phase-ordering kinetics, is the growth of ordered domains when a system is rapidly quenched into a broken-symmetry phase, as in rapidly cooled binary liquids.
Domain of a function
The domain of a function, also called the function domain, is the set of inputs for which it is defined, the X in f: X → Y.
Domain of dependence
The domain of dependence in general relativity is the spacetime region whose events are fully determined by data on a surface, underpinning the Cauchy problem.
Domain wall
A domain wall is the transition region between two adjacent magnetic domains in a ferromagnetic or ferroelectric material, where magnetization rotates continuously, typically 10 to 100 nm wide.
Domain wall fermions
Domain wall fermions are a lattice formulation of chiral fermions, proposed by David Kaplan in 1992, in which quarks live on a domain wall in a fifth dimension.
Domains of attraction of probability laws
A domain of attraction of probability laws is the set of distributions whose normalized sums of independent copies converge to a stable law, typically the normal or an α-stable limit.
Dome Fuji Station
Dome Fuji Station (ドームふじ基地), Japanese inland Antarctic station at 77°19'S, 39°42'E, 3,810 m in Dronning Maud Land; established 1995 for deep ice-core drilling, producing cores to 720,000 years; year-round operations suspended.
Domicile (astrology)
In astrology, domicile is the placement of a planet in the zodiac sign it rules, such as Mars in Aries; traditionally the highest of the essential dignities.
Dominance analysis
Dominance analysis is a statistical method for ranking the relative importance of predictor variables in a regression model, introduced by David V. Budescu in 1993.
Dominated convergence theorem
Dominated convergence theorem, also called Lebesgue's dominated convergence theorem, is a measure theory result giving a condition under which a limit and an integral can be exchanged.
Dominating number
The dominating number, written 𝔡, is a cardinal characteristic of set theory: the smallest size of a family of natural-number functions that eventually dominates every such function.
Dominating set
The dominating set problem, in graph theory, asks for a smallest set of vertices covering a graph, so every vertex is in the set or adjacent to it.
Dominator (graph theory)
In graph theory, a dominator of a vertex v in a flowgraph is a vertex every path from the root to v must pass through; dominators form a dominator tree.
Domingo Giribaldo
Domingo Giribaldo (1876–1950) was a Uruguayan chemist who taught at the University of the Republic and in 1925 produced sodium hypochlorite in South America for the first time.
Dominical letter
The dominical letter is one of the letters A to G marking which days of a year are Sundays, used with the Golden Number to calculate Easter.
Dominick V. Spracklen
Dominick V. Spracklen is Professor of Biosphere-Atmosphere Interactions at the University of Leeds, known for satellite studies showing tropical forests double rainfall downwind and quantifying deforestation's health impacts.
Dominik Marx
Dominik Marx is a German theoretical chemist at Ruhr-Universität Bochum known for ab initio path integral molecular dynamics and simulations of proton transfer in water.
Dominique Picard
Dominique Picard, born in 1952, is a French mathematician and statistician at the University of Paris Diderot known for wavelet shrinkage, change-point detection, and inverse problems.
Domino reaction
A domino reaction is an organic synthesis strategy in which two or more bond-forming reactions run sequentially in a single vessel without isolating intermediates, defined by Lutz F. Tietze.
Domino synthesis
Domino synthesis is an organic chemistry strategy in which two or more bond-forming transformations run sequentially in a single vessel, converting simple starting materials into complex products without isolating intermediates.