Browsing by Author "71710e23-727e-40ba-a954-4f22687e1ee6"
Now showing items 1-11 of 11
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Miranda, J.; López-Suárez, A.; Paredes-Gutiérrez, R.; González, S.; De Lucio, O. G.; Andrade, E.; Morales, J. R.; Avila-Sobarzo, M. J. (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 ...
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Dinator, M. I.; Cancino, S. A.; Miranda, P. A.; Morales, J. R.; Seelenfreund, A. (2007)Total charge deposited by a proton beam in an insulator during PIXE analysis has been indirectly determined using a Mylar film coated with cobalt. Elemental concentrations in the samples, pieces of volcanic glass, were ...
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Morales, J. R.; Chesta, M. A.; Cancino, S. A.; Miranda, P. A.; Dinator, M. I.; Avila, M. J. (2005)Proton induced X-ray emission (FIXE) has been applied to the measurement of the production cross section of a radionuclide decaying by electron capture. By performing a PIXE type experiment on the daughter nuclide important ...
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Morales Peña, José; Cancino, S.; Miranda, P.; Dinator, M. I.; Seelenfreund, A. (2007)Geochemical characterization studies using PIXE were carried out on 21 vitreous dacite artifacts from early formative archaeological sites in the Atacama region, in northern Chile, and on 13 samples taken from two potential ...
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Polve, M.; Valdés, A.; Belmar Urbina, Mauricio; Dinator Ramírez, María Inés; Silva, M.; Morata Céspedes, Diego; Leiva, M. A.; Aigouy, T.; Morales, J. R. (Springer, 2007-12-05)Abstract Santiago de Chile is a big city with huge air quality problems, being one of the most polluted cities in the world. This is aggravated during winter by the topography and meteorological conditions of the city. ...
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Koltay, E.; Rajta, I.; Morales, J. R.; Borbély-Kiss, I.; Kiss, Á Z. (Elsevier Science Publishers B.V., 1999)A set of aerosol samples collected during major volcanic activities around the Chilean site Lonquimay in the years 1988-1990 has been subjected to measurements in conventional and microPIXE modes in the Debrecen institute. ...
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Copaja, S. V.; Díaz, G.; Toro, R.; Tessada, R.; Miranda, P.; Morales, J. R. (Sociedad Chilena de Quimica, 2012)Mining is one of the most important industrial activities in Chile and there is growing concern on pollution by some mining and metallurgical processes. We have studied the contents of heavy metals in sediments from three ...
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Molina, F.; Aguilera, P.; Romero Barrientos, J.; Arellano Sepúlveda, Hugo; Agramunt, J.; Medel, J.; Morales, J. R.; Zambra, M. (Elsevier, 2017)We present a methodology to obtain the energy distribution of the neutron flux of an experimental nuclear reactor, using multi-foil activation measurements and the Expectation Maximization unfolding algorithm, which is ...
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Romo-Kröger, C. M.; Morales, J. R.; Dinator, M. I.; Llona, F.; Eaton, L. C. (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 ...
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Préndez, M.; Wachter, J.; Vega, C.; Flocchini, R. G.; Wakayabashi, P.; Morales, J. R. (2009)Collection of PM2.5 particles was carried out in Antarctica in the summer periods of years 2006 and 2007 using solar panels to operate the sampling unit. The unit was installed 2.5 km from the B. O'Higgins Chilean base to ...
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Cruvinel, P. E.; Flocchini, R. G.; Crestana, S.; Morales, J. R.; Miranda, J.; Kusko, B. H.; Nielsen, D. R. (1993)An investigation of the influence of the aggregate sizes on some elements of an oxisol is presented. Proton Induced X-ray Emission (PIXE) has been used to carry out this analysis. Aggregate sizes from <0.5 mm to 4.7 mm ...