All articles starting with G
18,970 articles
Grahani Kapata Rasa
Kapata rasa (Grahani kapata rasa) is a herbo-mineral Ayurvedic pill of Rasashastra containing purified mercury and sulphur, used for grahani roga (malabsorption syndrome); distinct from the unrelated Maluku oral tradition called kapata.
Grahanimihira Taila
Grahanimihira Taila is a classical Ayurvedic polyherbal sesame-oil preparation listed in the Ayurvedic Formulary of India, taken internally chiefly for grahani, the malabsorption syndrome, and diarrhea.
Grahi
Grahi, known in Chinese records as Chia-lo-hsi (加啰希), was a polity on the east coast of the Malay Peninsula, identified with Chaiya in southern Thailand and known from a dated inscription of 1183.
Graias Gonu
Graias Gonu (Γραίας γόνυ) was an ancient coastal town or station in Egypt, perhaps at Kom Nadoura/Marsa Berek, attested in two texts, dated 330 BC–AD 300, Barrington Atlas 73 E2, Pleiades 716568.
Grail
Grail is an American healthcare company in Menlo Park, California, that sells the Galleri blood test, which detects a cancer signal across more than 50 cancer types.
Grail romance
Grail romance is a body of medieval Arthurian narratives about the Grail, begun by Chrétien de Troyes around 1190 and made a Christian quest by Robert de Boron.
Grain
Grain: edible seed of cereal grasses (wheat, rice, maize, barley, sorghum, oats, millet, rye), a caryopsis fruit of bran, endosperm, and germ. Staple food and feed crop; 2026 world cereal output forecast at 2,979 million tonnes.
Grain (unit)
The grain (gr), also called the troy grain, is a unit of mass equal to 64.79891 milligrams, shared by the avoirdupois, troy, and apothecaries' systems.
Grain boundary
A grain boundary is the internal interface where two crystals of different orientation meet within a polycrystalline solid, and it strongly affects hardness, brittleness, creep, and corrosion resistance.
Grain boundary complexion
A grain boundary complexion is the thermodynamically stable state of a grain boundary or other interface, whose structure and composition are set by temperature, pressure, and chemical potential.
Grain boundary engineering
Grain boundary engineering (GBE) is a materials-design strategy, proposed by Tadao Watanabe in 1984, that controls grain boundary types and connectivity to improve properties, with applications against corrosion and cracking.
Grain boundary segregation
Grain boundary segregation is the enrichment of solute or impurity atoms at the grain boundaries of a polycrystalline material, affecting cohesion and causing temper embrittlement in steels.
Grain boundary stabilization in nanocrystalline metals
Grain boundary stabilization in nanocrystalline metals is the set of thermodynamic and kinetic strategies, mainly solute segregation at grain boundaries, that keeps nanometer-scale grains from coarsening.
Grain boundary strengthening
Grain boundary strengthening, also called Hall–Petch strengthening, is a method of strengthening polycrystalline metals by reducing their average grain size, described by the Hall–Petch equation proposed in 1951.
Grain captains (liangzhang)
Grain captains (粮长) were Ming dynasty households, appointed from the largest local landholders by the founding emperor Taizu, charged with supervising their locality's tax payment.
Grain Coast
Grain Coast, also called Pepper Coast or Malagueta Coast, a historical Atlantic region of West Africa roughly matching modern Liberia, named for its fifteenth-century export trade in grains of paradise (melegueta pepper).
Grain elevator
A grain elevator, also called a grain terminal, is a facility that receives, stores, weighs, and distributes grain, named for the tall tower structure that stores it.
Grain entrapment
Grain entrapment, or grain engulfment, is suffocation hazard in bins and silos when flowing, bridged, or collapsing grain buries a worker; kills nearly two dozen people yearly in the U.S., regulated by OSHA 29 CFR 1910.272.
Grain for Green Program
The Grain for Green Program (退耕還林) is a Chinese land-conversion policy paying farmers to stop cultivating cropland and plant trees or grass, begun in 1999 after catastrophic 1998 floods.
Grain growth
Grain growth is the coarsening of crystalline grains in a polycrystalline material during annealing at high temperature, driven by reduction of grain-boundary energy; it strongly influences strength, corrosion resistance, and creep.
Grain LNG Terminal
Grain LNG Terminal, also called the Isle of Grain LNG Terminal, is the United Kingdom's largest LNG import terminal, located on the Isle of Grain in Kent, southeast England.
Grain power station
Grain power station is a 1,275 MW gas-fired power station on the Isle of Grain in Kent, England, opened in 2011 on the site of a former oil-fired station.
Grain Procurement Crisis of 1928
The Grain Procurement Crisis of 1928 (Хлебозаготовительный кризис 1928 года) was the failure of Soviet state grain collections in winter 1927–28, answered with police arrests of grain-holding peasants.
Grain refinement
Grain refinement is the reduction of crystal grain size in a metal or alloy, achieved by inoculation during solidification or by deformation, improving strength and castability.
Grain rotation-mediated plasticity in nanocrystalline metals
Grain rotation-mediated plasticity is a deformation mechanism in nanocrystalline metals, seen below roughly 15 nm grain size, where rotating grains rather than dislocations carry plastic strain.
Grain size
Grain size is the diameter of the individual grains in a sediment or soil, the most basic attribute used to describe and classify sediments into gravel, sand, silt, and clay.
Grain size analysis
Grain size analysis measures the size of crystalline grains in polycrystalline materials, typically from polished sections imaged by microscopy or EBSD, and matters because grain size controls strength through the Hall–Petch relationship.
Grain transport reform of Pei Yaoqing
The grain transport reform of Pei Yaoqing (裴耀卿漕运改革) replaced single long-haul grain shipping to the Tang capital with relay transport through transfer granaries on the Yellow River.
Grain-boundary passivation in perovskite films
Grain-boundary passivation in perovskite films is the chemical treatment of crystal interfaces in a perovskite layer to neutralize defect states, reducing recombination and slowing degradation.
Grain-oriented electrical steel
Grain-oriented electrical steel (GOES, also called CRGO, cold-rolled grain-oriented steel) is a silicon-iron soft magnetic sheet with grains aligned along the rolling direction, giving low core loss in transformer cores.