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  • 2016
  • In 2016, Xingye Copper acquired Internet and Mobile Gaming products development company Funnytime Limited and its subsidiaries for roughly HK$186 million. (wikipedia.org)
  • soluble
  • The Occupational Safety and Health Administration (OSHA) has set a limit of 0.1 mg/m3 for copper fumes (vapor generated from heating copper) and 1 mg/m3 for copper dusts (fine metallic copper particles) and mists (aerosol of soluble copper) in workroom air during an eight-hour work shift, 40-hour work week. (wikipedia.org)
  • oxygen
  • Due to the loss of only one electron and the bonding properties of copper(I) the structure is built up from four oxygen atoms of each sulfate group bonding to four other sulfate groups of the same layer via symmetrical O-Cu-O bridging. (wikipedia.org)
  • Free copper normally reduces oxidative stress, as it is involved in the metabolic elimination of reactive oxygen species, such as with the superoxide radical through Cu-Zn dependent superoxide dismutase. (wikipedia.org)
  • The term 'oxygen free copper' can be a little confusing, partly because it is inaccurate, at best it will be 'oxygen reduced', and partly because of different standards. (angelfire.com)
  • Typical purity of 99.95% is specified for ETP copper, with oxygen impurity at an optimum level of 200 ppm. (angelfire.com)
  • An oxygen level under 3 to 4 ppm is needed for reliable welding, and for this purpose reduced oxygen copper was developed. (angelfire.com)
  • One oxygen atom on each acetate is bound to one copper at 1.97 Å (197 pm ). (wikipedia.org)
  • Copper does not react with water, but it does slowly react with atmospheric oxygen to form a layer of brown-black copper oxide which, unlike the rust that forms on iron in moist air, protects the underlying metal from further corrosion (passivation). (wikipedia.org)
  • 1980s
  • In the late 1980s, copper peptide GHK-Cu started attracting attention as a promising wound healing agent. (wikipedia.org)
  • In the 1980s, Bob Copper published the book Across Sussex with Belloc in which he retraced the route across Sussex of Hilaire Belloc and the characters of Belloc's novel The Four Men: a Farrago. (wikipedia.org)
  • centers
  • The alpha form has only one Cu environment, with [4+coordination, but the beta form has two different copper centers, one with [4+and one that is square planar. (wikipedia.org)
  • The nitromethane solvate also features "[4+ coordination", with four short Cu-O bonds of approximately 200 pm and one longer bond at 240 pm. They are coordination polymers , with infinite chains of copper(II) centers and nitrate groups. (wikipedia.org)
  • The two copper centers interact resulting in a diminishing of the magnetic moment such that near 90 K , Cu 2 (OAc) 4 (H 2 O) 2 is essentially diamagnetic due to cancellation of the two opposing spins. (wikipedia.org)
  • metals
  • ICD-9-CM code 985.8 Toxic effect of other specified metals includes acute & chronic copper poisoning (or other toxic effect) whether intentional, accidental, industrial etc. (wikipedia.org)
  • Many copper ores also contain significant quantities of gold, silver, nickel, and other valuable metals, as well as large quantities of commercially useless material. (encyclopedia.com)
  • Copper is one of the few metals that occur in nature in directly usable metallic form (native metals) as opposed to needing extraction from an ore. (wikipedia.org)
  • Unlike metals with incomplete d-shells, metallic bonds in copper are lacking a covalent character and are relatively weak. (wikipedia.org)
  • The softness of copper partly explains its high electrical conductivity (59.6×106 S/m) and high thermal conductivity, second highest (second only to silver) among pure metals at room temperature. (wikipedia.org)
  • As with other metals, if copper is put in contact with another metal, galvanic corrosion will occur. (wikipedia.org)
  • Open-pit mining for copper, gold and other metals not only produces air pollution from smelters, but has been linked to the serious decline of the Tarahumara frog (Rana tarahumarae). (wikipedia.org)
  • intake
  • Further research established that GHK peptide has a strong affinity for copper and exists in two forms - GHK and GHK-Cu. On the basis of the available data, it was proposed that GHK-Cu functions by modulating copper intake into cells. (wikipedia.org)
  • cobre
  • In the Roman era, copper was principally mined on Cyprus, the origin of the name of the metal, from aes сyprium (metal of Cyprus), later corrupted to сuprum, from which the words copper (English), cuivre (French), cobre (Spanish), Koper (Dutch) and Kupfer (German) are all derived. (wikipedia.org)
  • Copper Canyon (Spanish: Barrancas del Cobre) is a group of canyons consisting of six distinct canyons in the Sierra Madre Occidental in the southwestern part of the state of Chihuahua in northwestern Mexico. (wikipedia.org)
  • native copper
  • Most of the copper used before 4000 b.c. came from the random discovery of isolated outcroppings of native copper or from meteorites that had impacted Earth. (encyclopedia.com)
  • It represents those westernmost Central Inuit who used and relied on native copper gathered along the lower Coppermine River and the Coronation Gulf. (wikipedia.org)
  • affords
  • Attempted dehydration of any of the hydrated copper(II) nitrates by heating instead affords the oxides, not Cu(NO 3 ) 2 . (wikipedia.org)
  • metallic
  • The two five-coordinate copper atoms are separated by only 2.62 Å (262 pm), which is close to the Cu-Cu separation in metallic copper. (wikipedia.org)
  • Copper is one of a few metallic elements with a natural color other than gray or silver. (wikipedia.org)
  • nitrate
  • Not to be confused with Copper(I) nitrate . (wikipedia.org)
  • At 80 °C, the hydrates convert to "basic copper nitrate" (Cu 2 (NO 3 )(OH) 3 ), which converts to CuO at 180 °C. Exploiting this reactivity, copper nitrate can be used to generate nitric acid by heating it until decomposition and passing the fumes directly into water. (wikipedia.org)
  • In the gas phase, copper(II) nitrate features two bidentate nitrate ligands (see image at upper right). (wikipedia.org)
  • Thus, evaporation of the solid entails " cracking " to give the copper(II) nitrate molecule. (wikipedia.org)
  • albumin
  • Copper in the blood and blood stream exists in two forms: bound to ceruloplasmin (85-95%), and the rest "free", loosely bound to albumin and small molecules. (wikipedia.org)
  • Loren Pickart isolated the copper peptide GHK-Cu from human plasma albumin in 1973. (wikipedia.org)
  • citation
  • in that edition, Copper "edited" most of the tales in ways that many Solar Pons aficionados found objectionable[citation needed]. (wikipedia.org)
  • citation needed] Copper Canyon traditional inhabitants are the Tarahumara or Rarámuri. (wikipedia.org)
  • known
  • Copper(I) sulfate , also known as cuprous sulfate and dicopper sulfate , is the chemical compound with the chemical formula Cu 2 SO 4 and a molar mass of 223.15 g mol −1 . (wikipedia.org)
  • There is evidence that by about 6400 b.c. copper was being melted and cast into objects in the area now known as Turkey. (encyclopedia.com)
  • The most common sulfide ore is chalcopyrite, CuFeS 2 , also known as copper pyrite or yellow copper ore. (encyclopedia.com)
  • The name was given by Peter D. Rowley, USGS geologist to this area (1970-71 and 1972-73), who reported that the nunataks contain the largest known copper deposits in Antarctica. (wikipedia.org)
  • In addition to horror and detective fiction, Copper was perhaps best known for his series of Solar Pons stories continuing the character created as a tribute to Sherlock Holmes by August Derleth. (wikipedia.org)
  • Copper ale is a style of ale known in part for its copper color. (wikipedia.org)
  • Beer style Brew kettle - a large tank also known as a "copper" Cask ale Draught beer Beer portal Grove, Jake (July 1, 2011). (wikipedia.org)
  • The Copper Riot, also known as the Moscow Uprising of 1662 (Russian: Медный бунт, Московское восстание 1662 года) was a major riot in Moscow, which took place on 4 August [O.S. 25 July] 1662. (wikipedia.org)
  • metal
  • In cases of suspected copper poisoning, penicillamine is the drug of choice, and dimercaprol, a heavy metal chelating agent, is often administered. (wikipedia.org)
  • In an illustration of a 'single metal replacement reaction,' iron is submerged in a solution of copper sulfate. (mcgill.ca)
  • Copper is used as a conductor of heat and electricity, as a building material, and as a constituent of various metal alloys, such as sterling silver used in jewelry, cupronickel used to make marine hardware and coins, and constantan used in strain gauges and thermocouples for temperature measurement. (wikipedia.org)
  • A limited edition initial run of the CD was released by Rykodisc in a front-and-back metal copper sleeve with each of the 2,500 copies containing a one-of-a-kind Polaroid photo taken by one of the three band members and stamped on the back with "Sugar Copper Blue Summer '92. (wikipedia.org)
  • Depending on metal prices, copper may be a very cost-effective cladding and roofing material. (wikipedia.org)
  • bronze
  • It mainly involves in producing high precision copper plates and strips, tin phosphorus bronze plates and strips, brass plates and strips, lead frame strips and nickel silver plates and strips. (wikipedia.org)
  • phosphorus
  • The copper purity is about the same as ETP, but phosphorus is at about 200ppm. (angelfire.com)
  • A better grade, Cu-DLP has reduced phosphorus content at 50ppm, again has similar copper purity to ETP, and only about 2% lower conductivity. (angelfire.com)
  • names
  • Even copper manufacturers sometimes give what look like conflicting accounts of the properties and names of various grades of copper, so there is some difficulty in comparing different samples. (angelfire.com)
  • This article incorporates public domain material from the United States Geological Survey document "Copper Nunataks" (content from the Geographic Names Information System). (wikipedia.org)
  • quantities
  • In 1654, the Russian government decided to begin issuing copper money in large quantities, equating them with silver money. (wikipedia.org)
  • thick
  • Tags are made of thick raw solid Copper, oxidized and polished to a brushed finish. (etsy.com)
  • Slot-in panels (typically made from 1.0mm thick copper sheet): max 350mm wide for 1.0mm, by nominal 4 m length. (wikipedia.org)
  • Cassettes (typically made from 1.0mm up to 1.5mm thick copper sheet): largest-format cladding elements, more subframing is needed: can be 900mm x nominal 4000mm length. (wikipedia.org)
  • humans
  • Despite the dramatic alteration of New Zealand's landscape by humans, the copper skink has adapted relatively well to urbanisation of its environment. (wikipedia.org)
  • Canyon
  • The walls of the canyon are a copper/green color, which is where the name originates. (wikipedia.org)
  • The New Spanish arrived in the Copper Canyon area in the 17th century and encountered the indigenous locals throughout Chihuahua. (wikipedia.org)
  • The alpine climate of the mountainous regions of Copper Canyon has moderate[vague] temperatures from October to November and March to April. (wikipedia.org)
  • blue
  • Copper Blue is the debut studio album by American alternative rock band Sugar. (wikipedia.org)
  • In August 2012, Bob Mould and his band embarked on a "Copper Blue Tour", playing the album in its entirety at several European venues. (wikipedia.org)
  • Bob Mould - guitars, vocals, keyboards, percussion David Barbe - bass Malcolm Travis - drums, percussion Album Notes A^ Chart placing refers to 2012 release Copper Blue/Beaster. (wikipedia.org)
  • form
  • It combines with arsenic trioxide to form copper acetoarsenite, a powerful insecticide and fungicide called Paris Green or Schweinfurt Green. (wikipedia.org)
  • Pure copper is rarely found in nature, but is usually combined with other chemicals in the form of copper ores. (encyclopedia.com)
  • For this reason, copper is usually supplied in a fine-grained polycrystalline form, which has greater strength than monocrystalline forms. (wikipedia.org)
  • Copper selenide is produced in-situ to form a protective black coating on iron or steel parts in some cold-bluing processes. (wikipedia.org)
  • found
  • A copper pendant from about 8700 b.c. was found in what is now northern Iraq. (encyclopedia.com)
  • In about 3000 b.c., large deposits of copper ore were found on the island of Cyprus in the Mediterranean Sea . (encyclopedia.com)
  • Following a taxonomic revision of the species complex in 2008, the copper skink was assigned the scientific name of Cyclodina aenea, and found to be both genetically and morphologically diverged from two other skink species that were previously considered synonymic. (wikipedia.org)
  • In his notes accompanying their archive CD Come Write Me Down, Vic Gammon notes that both the collecting of songs and their unaccompanied singing were less common than is often imagined at this time and that Lee, a singer herself, knew she had found something special when she encountered the Coppers. (wikipedia.org)
  • deposits
  • Despite this early production, most copper used in the United States was imported from Chile until 1844, when mining of large deposits of high-grade copper ore around Lake Superior began. (encyclopedia.com)
  • various
  • There are also various alloys of copper used in electronics applications, and these include Copper-silver, copper-chromium etc. which have better mechanical properties. (angelfire.com)
  • A dilute solution of copper sulfate is used to treat aquarium fish of various parasitic infections, and is also used to remove snails from aquariums. (mcgill.ca)
  • high
  • Copper of extremely high purity, or with large crystal size are also available, sometimes at a high price, but one example of twin speaker cable is available with a specification of 99.999% OFC, for as little as 36p (UK) per metre. (angelfire.com)
  • However, due to the high overlap of the species' resource requirements, the rainbow skink is still considered by many to be a potential threat to copper skink populations. (wikipedia.org)
  • Xingye Copper International Group Limited (SEHK: 505) one of the leading high precision copper producer in China. (wikipedia.org)
  • reaction
  • The reaction proceeds via the intermediacy of copper(I) acetylides , which are then oxidized by the copper(II) acetate, releasing the acetylide radical. (wikipedia.org)
  • concentration
  • Each process consists of several steps in which unwanted materials are physically or chemically removed, and the concentration of copper is progressively increased. (encyclopedia.com)
  • Ischemic open wounds in rats treated with GHK-copper healed faster and had decreased concentration of metalloproteinases 2 and 9 as well as of TNF-beta (a major inflammatory cytokine) compared with vehicle alone or with untreated wounds. (wikipedia.org)
  • include
  • Acute symptoms of copper poisoning by ingestion include vomiting, hematemesis (vomiting of blood), hypotension (low blood pressure), melena (black "tarry" feces), coma, jaundice (yellowish pigmentation of the skin), and gastrointestinal distress. (wikipedia.org)
  • Natural basic copper nitrates include the rare minerals gerhardtite and rouaite, both being polymorphs of Cu 2 (NO 3 )(OH) 3 substance. (wikipedia.org)
  • English
  • Later this was corrupted to cuprum, from which the English word copper and the chemical symbol Cu are derived. (encyclopedia.com)
  • Basil Frederick Albert Copper (5 February 1924 - 3 April 2013) was an English writer and former journalist and newspaper editor. (wikipedia.org)
  • The Copper Family are a family of singers of traditional, unaccompanied English folk song. (wikipedia.org)
  • Some varieties of copper ale may be produced to have a bitter flavor, such as that of a bitter, the English term for pale ale. (wikipedia.org)