Results 21 to 30 of about 87,628 (306)

Gold and Silver joining technologies in the Moche Tombs “Señor de Sipán” and “Señora de Cao jewelery [PDF]

open access: yes, 2018
About 200 gold and silver funerary ornaments from the Moche tombs “Señor de Sipán” and “Señora de Cao” were analyzed to determine their metallurgic characteristics. Of particular interest was the question about the gold-silver joining process.
Brunetti, Antonio   +7 more
core   +1 more source

Inca figurines from the Ethnologisches Museum in Berlin: an analytical study of some typical and atypical productions

open access: yesBulletin de l'Institut Français d'Études Andines, 2017
Fourteen hollow and one cast anthropomorphic and zoomorphic figurines produced in Incan times for ritual offerings from the Ethnologisches Museum in Berlin were selected to investigate the technologies and alloys used for their fabrication with portable ...
Maria Filomena Guerra   +3 more
doaj   +1 more source

Impact of co-adsorbed oxygen on crotonaldehyde adsorption over gold nanoclusters : a computational study [PDF]

open access: yes, 2013
Crotonaldehyde (2-butenal) adsorption over gold sub-nanometer particles, and the influence of co-adsorbed oxygen, has been systematically investigated by computational methods.
Adam F. Lee   +55 more
core   +5 more sources

Evaluation and comparison of castability between an indigenous and imported Ni-Cr alloy

open access: yesIndian Journal of Dental Research, 2011
Context: Since 1907 casting restorations have been in use in dentistry. Numerous companies have been manufacturing and marketing base metal alloys. Gold was a major component of casting alloys.
Ganesh Ramesh   +3 more
doaj   +1 more source

Release of soluble metal ions from copper based dental alloys mesured by ICP-MS [PDF]

open access: yes, 2011
Describes the release of soluble metal ions from copper based dental alloys mesured by ICP-MS.
Ardlin   +5 more
core   +1 more source

MINERAL INCLUSIONS IN PLATINUM GRAINS FROM THE KAZAN PLACER (SOUTH URALS) [PDF]

open access: yesМинералогия, 2020
Platinum grains from the Kazan placer in the South Urals contain inclusions of native metals (gold, osmium group alloys), as well as PGE chalcogenides: sulfides (laurite, erlichmanite, bauite), sulfoarsenides (irarsite and hollingworthite ...
E.V. Zaykova   +2 more
doaj   +1 more source

The use of gold and gold alloys in prosthetic dentistry – a literature review

open access: yesCurrent Issues in Pharmacy and Medical Sciences, 2015
Gold is a noble metal with very good chemical resistance. It also does not become oxidized in water or air. Pure gold has a bright yellow color and shine, and it is a heavy, but soft metal with huge plasticity and ductility.
Oleszek-Listopad Justyna   +5 more
doaj   +1 more source

Gold parting with nitric acid in gold-silver alloys

open access: yesSubstantia, 2019
This article is an overview of gold parting with nitric acid on a both industrial and laboratory scale, supported by more recently reported experimental and theoretical studies on the gold dealloying process for the fabrication of nanoporous gold ...
Iacopo Ciabatti
doaj   +1 more source

Pd-Shaped Nanoparticles Modified by Gold ad-Atoms: Effects on Surface Structure and Activity Toward Glucose Electrooxidation

open access: yesFrontiers in Chemistry, 2019
Palladium nanoparticles (Pd-NPs) with controlled distributions of sizes and shapes (nanospheres–Pd-NS-, nanocubes -Pd-NC-, and nanooctahedrons -Pd-NO-) are synthesized by wet chemistry methods and characterized by TEM/HRTEM.
Thibault Rafaïdeen   +2 more
doaj   +1 more source

Comportement anodique d’alliages or-cuivre en solution aqueuse de NaCl

open access: yesCHIMIA, 1973
The anodical behaviors of 50% Cu-Au alloys, having an ordered or disordered structure, were studied in aqueous solutions of chloride by means of different electrochemical methods.
P. Tissot, H. Lüthy, R. Monnier
doaj   +1 more source

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