Navegação Produção Científica por Assunto "Ouro"
Resultados 1-15 de 15
-
Caracterizacao de carvoes ativados para a metalurgia extrativa do ouro
(1992) [Resumo publicado em evento] -
Enhanced interface perpendicular magnetic anisotropy in electrodeposited Co/Au(111) layers
(2001) [Artigo de periódico]This work investigates the structure and interface perpendicular magnetic anisotropy (PMA) of electrodeposited Cu/Co/Au(111) sandwiches with variable Co thickness [2–20 monolayers (ML’s)]. In optimum deposition conditions, ... -
Estudo da difusão de metais em polímeros
(1998) [Resumo publicado em evento] -
Fluids associated with the Caxias mesothermal gold mineralization, São Luis Craton, northern Brazil: a fluid inclusion study
(2000) [Artigo de periódico]The Caxias deposit is situated in the Gurupi Auriferous Province of the Paleoproterozoic São Luís Craton, northern Brazil. It is a lode-type gold mineralization associated with a narrow, steeply dipping, NE-trending, shear ... -
Geochemical modeling of gold precipitation conditions in the Bloco do Butiá Mine, Lavras do Sul/Brazil
(2005) [Artigo de periódico]Com auxílio dos pacotes de programas EQ3/EQ6 foi realizado um modelamento geoquímico deposicional para ouro e comparado com dados geológicos, petrográficos, geoquímicos e de inclusões fluidas da mina de ouro do Bloco do ... -
Interpretação das anomalias de potássio hidrotermal e parâmetro F da região do Complexo Bossoroca, São Sepé, RS
(2004) [Artigo de periódico]Diversas ocorrências de ouro estão localizadas na Seqüência Campestre do Complexo Bossoroca no Escudo Sul-Rio-Grandense. Nessa região foi realizado um levantamento aerogeofísico, onde mapas gamaespectrométricos (K, U, Th ... -
Leaching of gold and silver from printed circuit board of mobile phones
(2015) [Artigo de periódico]Nowadays there is a wide variety of models, sizes and configurations of mobile phones available for consumption. After the life cycle of this equipment, the recycling and reuse of the precious metals found in the printed ... -
Measurements of L-shell x-ray production cross sections of W, Pt, and Au by 10-30-keV electrons
(2002) [Artigo de periódico]We present results from measurements of Lα x-ray production cross sections of the elements W, Pt, and Au by impact of electrons with energies in the range 10–30 keV. The cross sections were obtained by measuring Lα x-ray ... -
Nanoburacos em polímeros induzidos por impacto de ions energéticos de ouro
(1998) [Resumo publicado em evento] -
Nanoscale density fluctuations in swift heavy ion irradiated amorphous SiO2
(2011) [Artigo de periódico]We report on the observation of nanoscale density fluctuations in 2 μm thick amorphous SiO2 layers irradiated with 185 MeV Au ions. At high fluences, in excess of approximately 5 1012 ions=cm², where the surface is completely ... -
Recuperação de ouro livre de minérios por aglomeração oleosa com carvão
(1992) [Resumo publicado em evento] -
Separation and concentration of valuable and critical materials fromwasted LEDs by physical processes
(2021) [Artigo de periódico]The generation of wasted LEDs is expected to grow in the coming years, raising the challenge of recyclingand recovering their valuable and critical materials. Due to the low concentration of these materials, thecurrent ... -
Simple one-step method to synthesize polypyrrole-indigo carmine-silver nanocomposite
(2016) [Artigo de periódico]A nanocomposite of indigo carmine doped polypyrrole/silver nanoparticles was obtained by a one-step electrochemical process. The nanocomposite was characterized by scanning electron microscopy, infrared spectroscopy, ... -
Third-order nonlinear optical response of colloidal gold nanoparticles prepared by sputtering deposition
(2013) [Artigo de periódico]The nonlinear optical responses of gold nanoparticles dispersed in castor oil produced by sputtering deposition were investigated, using the thermally managed Z-scan technique. Particles with spherical shape and 2.6 nm of ... -
Tratamento de efluentes gerados por processos de beneficiamento de minérios auríferos
(1998) [Resumo publicado em evento]