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The use of injected gold compound is indicated for rheumatoid arthritis. [4] Its uses have diminished with the advent of newer compounds such as methotrexate and because of numerous side effects. [4] The efficacy of orally administered gold is more limited than injecting the gold compounds. [5]
Gold, a chemical element; Genomes OnLine Database; Global-scale Observations of the Limb and Disk, a NASA Explorer Mission of Opportunity; GOLD (parser), an open-source parser-generator of BNF-based grammars; Graduates of the Last Decade, an Institute of Electrical and Electronics Engineers program to garner more university level student members
But because those bonding wires are thinner than a human hair, the total amount of gold used is minuscule. A mobile device like a smartphone or tablet PC contains about 0.0002 ounces of gold. At ...
Gold, silver, platinum, and palladium each have an ISO 4217 currency code. The best known precious metals are the precious coinage metals, which are gold and silver. Although both have industrial uses, they are better known for their uses in art, jewelry, and coinage.
Colloidal gold is a sol or colloidal suspension of nanoparticles of gold in a fluid, usually water. [1] The colloid is coloured usually either wine red (for spherical particles less than 100 nm) or blue-purple (for larger spherical particles or nanorods). [2]
Cyanidation is also widely used in silver extraction, usually after froth flotation. [2] Production of reagents for mineral processing to recover gold represents 70% of cyanide consumption globally. While other metals, such as copper, zinc, and silver, are also recovered using cyanide, gold remains the primary driver of this technology.
Gold leaf is gold that has been hammered into thin sheets (usually around 0.1 μm thick [1]) by a process known as goldbeating, [2] for use in gilding. Gold leaf is a type of metal leaf , but the term is rarely used when referring to gold leaf.
Gold pentafluoride, along with its derivative anion, AuF − 6, and its difluorine complex, gold heptafluoride, is the sole example of gold(V), the highest verified oxidation state. [ 19 ] Some gold compounds exhibit aurophilic bonding , which describes the tendency of gold ions to interact at distances that are too long to be a conventional Au ...
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