The catalytic activity of copper, silver and gold foils, of a silver-lead (0.69 atom %) alloy foil and of several granular silver catalysts has been studied in the hydrogen-deuterium-exchange reaction. Observed activation energies and temperature ranges of activity of the catalysts have been measu...
The Fermi Surfaces of Copper, Silver and Gold I. The de Haas-van Alphen Effect Following the discovery of the effect in copper, silver and gold by the impulsive high-field method, a study of the variation of the oscillatory frequency (which is proportional to the extremal area of cross-sec...
Gekko Systems has developed a process, using its InLine Leach Reactor, to recover gold metal from a complex gold copper gravity concentrate produced by Hargraves Resources at Brown's Creek. The process involves intensive cyanidation under controlled conditions followed by gold recovery onto Aurix, a...
GoldSilverBase MetalsCritical Metals Explorer Shares Upcoming Catalysts for Idaho, Nevada Projects Streetwise Reports (11/26/2024) NevGold Corp. (NAU:TSX.V; NAUFF:OTC; 5E50:FSE) Chief Executive Officer Brandon Bonifacio says he expects there will be much to catalyze the company's stock as it...
Silver-gold (Ag-Au) alloys (2.2 at% to 60 at% Au) were found susceptible to stress corrosion cracking (SCC) in 1 M potassium chloride (KCl), 1 M potassium bromide (KBr), and 1 M potassium iodide (KI) aqueous solutions. Cracks were mainly intergranular, and there was no evidence of...
Many diverse ore systems are classified together as iron oxide copper-gold (lOCG) deposits based on an empirical definition arising primarily from geochemical features that do not specify tectonic setting, geologic environment, or sources of ore-forming fluid, metals, or other ore components. Such...
(NAU:TSX.V; NAUFF:OTC; 5E50:FSE) announced it has organically staked mineral claims in the Hercules Copper District of southwestern Idaho to create a new project, the Zeus Copper Project. The 4,900-acre site is about 20 kilometers southwest of Hercules Silver's (BADEF:OTCMKTS;BIG:TSXV)...
1) gold-silver-copper alloys 金银铜合金2) Ag-Cu alloy 银铜合金 1. This paper summarizes the usual technology methods of producing Ag-Cu alloy contact wire used for electrical railway,explains the necessity to develop new technology,develops a new method of producing Ag-Cu alloy contact wire...
Long-chain alkanethiols, HS(CH2)nCH3, adsorb from solution onto the surfaces of gold, silver, and copper and form monolayers. Reflection infrared spectroscopy indicates that monolayers on silver and on copper (when carefully prepared) have the chains in well-defined molecular orientations and in ...
Multimodal nanoparticles, utilizing quantum dots (QDs), mesoporous silica nanoparticles (MSNs), and gold nanoparticles (Au NPs), offer substantial potential as a smart and targeted drug delivery system for simultaneous cancer therapy and imaging. This me