Buscar
Mostrando ítems 21-30 de 152
Chemical and mineralogical characterization of Aguada Portezuelo pottery from Catamarca, north-western Argentina: PIXE, XRD and SEM-EDS studies applied to surface pre- and post-firing paints, slips and pastes
(Wiley Blackwell Publishing, Inc, 2020-04-16)
Particle-induced X-ray emission (PIXE), X-ray diffraction (XRD), electron microprobe analysis (EDS) and scanning electron microscopy (SEM) analytical techniques were used to characterize surface paints in pre- and post-fired ...
Heavy metals in the atmosphere coming from a copper smelter in Chile
(1994)
The Chilean mine El Teniente is the world's largest underground copper mine. It operates a giant smelter at Caletones (34° 7′ S, 70° 27′ W) and we have found it is the major source of air contamination in the region. In ...
A cultura digital em pauta: análise do site youPIX
(Universidade Estadual Paulista (Unesp), 2016-08-19)
O desenvolvimento da Internet e das tecnologias digitais de comunicação favoreceu não apenas a consolidação de novos hábitos e valores culturais, como também o surgimento de novos espaços de divulgação e de acesso a ...
Artificial neural networks applied to quantitative elemental analysis of organic material using PIXE
(ELSEVIER, 2006-08)
An artificial neural network (ANN) has been trained with real-sample PIXE (particle X-ray induced emission) spectra of organic substances. Following the training stage ANN was applied to a subset of similar samples thus ...
Recent IBA setup improvements in Chile
(Elsevier B.V., 2007)
A study of atmospheric aerosols from five sites in Mexico city using PIXE
(Elsevier, 1998)
Atmospheric aerosol samples collected in five sites in the Metropolitan Area of Mexico City were analyzed with proton induced X-ray emission (PIXE). Stacked Filter Units (SFU) of the Davis design were employed to obtain ...