GoLD

Gold Prices , Exchange Rates , Gold Stocks and the Gold Premium

This paper studies the exposure of the stock prices of Australian gold-mining firms to changes in gold prices and the valuation effects of gold price exposure. Goldmining firms have significant gold price exposure; the price of the average goldmining stock moves 0.76% for each 1.00% change in Australian-dollar-denominated gold prices. Evidence from the behaviour of stock price sensitivities sug...

Gold(0) porphyrins on gold nanoparticles.

Biomineralization of gold: biofilms on bacterioform gold.

Bacterial biofilms are associated with secondary gold grains from two sites in Australia. 16S ribosomal DNA clones of the genus Ralstonia that bear 99% similarity to the bacterium Ralstonia metallidurans-shown to precipitate gold from aqueous gold(III) tetrachloride-were present on all DNA-positive gold grains but were not detected in the surrounding soils. These results provide evidence for th...

Gold nephropathy.

The early use of gold in medicine and dentistry dates back to the ancient Chinese and Egyptians. The discovery in 1890 that gold salts were toxic in vitro to tubercle bacilli led to the extensive treatment of tuberculosis with gold salts in the first three decades of this century. Eventually, gold therapy was extended to arthritis and lupus erythematosus, because of the belief that these diseas...

Gold Nanoparticles

Nanoparticles have become important materials in modern technologies compared with their bulk analogues not only as a result of their excellent structural features but also as a result of their unusual functional attributes. Most of the bulk materials we use in everyday life such as steel or sand are composed of micrometer scale particles. The properties of a material are related to the bonding...