42,772 articles
Deterministic transfer technique for van der Waals assembly
Deterministic transfer is a family of techniques for picking up individual 2D material flakes and placing them at chosen locations and orientations, building van der Waals heterostructures layer by layer with high yield and cleanliness.
Detlef Lohse
Detlef Lohse, born in 1963 in Hamburg, Germany, is a German physicist who holds the Chair of Physics of Fluids at the University of Twente, known for turbulence and sonoluminescence.
Detlef P. van Vuuren
Detlef P. van Vuuren, also known as Detlef van Vuuren, is a Dutch climate scientist who led development of the RCP and SSP scenarios used in IPCC assessments.
Detlev Buchholz
Detlev Buchholz is a mathematical physicist known for rigorous, model-independent results in algebraic quantum field theory, including the Buchholz–Wichmann nuclearity condition, massless scattering theory, and particle weights.
Detour Lake
Detour Lake is a large open-pit gold mine in Cochrane District, northeastern Ontario, near the Quebec border. Operated by Agnico Eagle, it is the largest gold-producing mine in Canada.
Detrended correspondence analysis
Detrended correspondence analysis (DCA) is an ordination method used in ecology and archaeology, introduced by Hill and Gauch in 1980 to fix distortions in correspondence analysis.
Detrended fluctuation analysis
Detrended fluctuation analysis (DFA) is a statistical method that detects long-range correlations in nonstationary time series, introduced by C.-K. Peng and colleagues in 1994 to analyze DNA sequences.
Detrital zircon geochronology
Detrital zircon geochronology measures uranium-lead ages of individual zircon grains separated from sedimentary rocks, identifying sediment sources, correlating successions, and limiting the age of deposition.
Deuterated chloroform
Deuterated chloroform, also called chloroform-d, is the isotopologue of chloroform in which hydrogen is replaced with deuterium, and the most widely used solvent for proton NMR spectroscopy of organic compounds.
Deuterium
Deuterium, also known as heavy hydrogen or hydrogen-2, is a stable isotope of hydrogen containing one proton and one neutron. Discovered by Harold Urey in 1931, it is used in heavy water reactors and fusion research.
Deuterium burning
Deuterium burning is the fusion of deuterium with a proton to form helium-3, igniting at roughly 13 Jupiter masses, the conventional brown dwarf and giant planet dividing line.
Deuterium excess
Deuterium excess, or d-excess, is a parameter in stable water isotope analysis, defined by Dansgaard in 1964, that measures deviation from the global meteoric water line.
Deuterium labeling
Deuterium labeling is a chemistry technique that replaces hydrogen atoms in a molecule with deuterium to trace reaction mechanisms, follow metabolic pathways, and improve drug metabolic stability.
Deuterium NMR
Deuterium NMR is nuclear magnetic resonance spectroscopy of the deuterium nucleus (spin 1), used to measure molecular order and dynamics in membranes, liquid crystals, polymers, and labeled metabolites.
Deuterium–tritium fusion
Deuterium–tritium fusion (D–T fusion) is the nuclear reaction in which deuterium and tritium nuclei fuse into helium-4, releasing 17.58 MeV and powering most commercial fusion plans.
Deuteron
The deuteron is the nucleus of deuterium, heavy hydrogen, made of one proton and one neutron; it is the simplest compound atomic nucleus, denoted d or D.
Deuteron radius puzzle
The deuteron radius puzzle is the disagreement between the deuteron charge radius from muonic deuterium spectroscopy, about 2.1256 fm, and larger values near 2.1415 fm from ordinary spectroscopy.
Deutsche Gesellschaft für Chronometrie
The Deutsche Gesellschaft für Chronometrie (DGC) is a German learned society for the research and history of timekeeping, founded in 1949 and based in Nuremberg.
Deutscher Wetterdienst
The Deutscher Wetterdienst (DWD) is Germany's national meteorological service, founded in 1952 and based in Offenbach am Main, issuing official severe-weather warnings for the country.
Deutsches Elektronen-Synchrotron
Deutsches Elektronen-Synchrotron (DESY) is a German national research center in Hamburg for accelerator science, particle physics, and photon science, founded in 1959, now operating PETRA III and FLASH.
Deutsches Museum
The Deutsches Museum, formally the German Museum, is a science and technology museum in Munich founded by Oskar von Miller in 1903, the world's largest.
Developable surface
A developable surface, also called a singly curved surface, is a surface in three-dimensional space that can be flattened onto a plane without stretching or tearing, such as cones and cylinders.
Devendra Lal
Devendra Lal (1929–2012) was an Indian nuclear physicist and geophysicist who founded the use of cosmic-ray-produced isotopes as tracers and clocks, working at TIFR, the Physical Research Laboratory, and Scripps.
Devens Gust
Devens Gust is an American chemist at Arizona State University who works in artificial photosynthesis, known for the Gust–Moore–Moore collaboration and landmark Nature papers in 1984 and 2002.
Deviance information criterion
The Deviance Information Criterion (DIC), developed by David J. Spiegelhalter and colleagues, is a Bayesian model selection criterion that compares candidate models using deviance plus a parameter penalty.
Deviation (statistics)
In statistics, a deviation, also known as a statistical deviation, is the difference between an observation and a central value such as the mean or median, and deviations underlie measures like variance and standard deviation.
Device-independent quantum cryptography
Device-independent quantum cryptography, or DI-QKD, is an approach to quantum key distribution whose security is certified by Bell inequality violations rather than trust in the devices themselves.
Device-independent quantum random number generation
Device-independent quantum random number generation (DIQRNG) produces random bits certified by a loophole-free Bell test, requiring no assumptions about the devices, which may even be built by an adversary.
Device-independent randomness expansion
Device-independent randomness expansion (DIRE) is a quantum cryptographic protocol that produces a longer random string from a short seed, certified by Bell-inequality violations rather than trust in the devices.
Devil's Throat, Iguazu Falls
The Devil's Throat (Spanish: Garganta del Diablo; Portuguese: Garganta do Diabo) is the largest and tallest cataract of Iguazu Falls, where the Iguazu River plunges about 80 meters into a U-shaped chasm on the Argentina–Brazil border.