Browsing by Author "201-0499975"

Now showing items 1-9 of 9

    • Atacamite formation by deep saline waters in copper deposits from the Atacama Desert, Chile: evidence from ... 
      Reich Morales, Martín; Palacios Monasterio, Carlos; Parada Reyes, Miguel; Fehn, U.; Cameron, E. M.; Leybourne, M. I.; Zúñiga Páez, Alejandro (SPRINGER, 2008-08)
      The presence of large amounts of atacamite in oxide zones from ore deposits in the Atacama Desert of northern Chile requires saline solutions for its formation and hyperarid climate conditions for its preservation. We ...
    • Creep behavior of a dispersion-strengthened Cu-Ti-Al alloy obtained by reaction milling 
      Espinoza, Rodrigo G.; Palma Hillerns, Rodrigo; Sepúlveda Osses, Aquiles; Zúñiga Páez, Alejandro (ELSEVIER, 2008-12-20)
      Creep results of a dispersion-strengthened nominal-composition Cu-2.5 vol.%Ti-2.5 vol.%Al alloy, and the adjustment of those results to existing creep models, are presented. The alloy was prepared by reaction milling; its ...
    • Effect of particle size, morphology, and hardness on cold gas dynamic sprayed aluminum alloy coatings 
      Jodoin, B.; Ajdelsztajn, L.; Sansoucy, E.; Zúñiga Páez, Alejandro; Richer, P.; Lavernia, Enrique J. (ELSEVIER, 2006-12-04)
      This work describes recent progress in Cold Gas Dynamic Spraying process of conventional and nanocrystalline 2618 (Al-Cu-Mg-Fe-Ni) aluminum alloy containing Sc. As-atomized and cryomilled 2618 + Sc aluminum powders were ...
    • Electron beam-induced structural transformations of MoO3 and MoO32x crystalline nanostructures 
      Díaz Droguett, Donovan Enrique; Zúñiga Páez, Alejandro; Solorzano, G.; Fuenzalida, V. M. (Springer, 2012)
      Electron beam-induced damage and structural changes in MoO3 and MoO3-x single crystalline nanostructures were revealed by in situ transmission electron microscopy (TEM) examination (at 200 kV) after few minutes of ...
    • "Invisible" silver and gold in supergene digenite (Cu1.8S) 
      Reich Morales, Martín; Chryssoulis, Stephen L.; Deditius, Artur; Palacios Monasterio, Carlos; Zúñiga Páez, Alejandro; Weldt, Magdalena; Alvear, Macarena (PERGAMON-ELSEVIER SCIENCE, 2010-11-01)
      Despite its potential economic and environmental importance, the study of trace metals in supergene (secondary) Cu-sulfides has been seriously overlooked in the past decades. In this study, the concentration and mineralogical ...
    • Novel route to synthesize CuO nanoplatelets 
      Zárate Aliaga, Ramón; Hevia, F.; Fuentes, S.; Fuenzalida, V. M.; Zúñiga Páez, Alejandro (ACADEMIC PRESS INC ELSEVIER SCIENCE, 2007-04)
      A new synthesis route to obtain high-purity cupric oxide, CuO, using the hydrothermal reaction of copper sulfide and a NaOH solution in an oxygen atmosphere has been developed. The synthesized products showed nanoplatelet-like ...
    • Regulatory network for cell shape changes during Drosophila ventral furrow formation 
      Aracena, Julio; González Canales, Mauricio; Zúñiga Páez, Alejandro; Méndez, Marco; Cambiazo Ayala, Liliana (ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD, 2006-03-07)
      Rapid and sequential cell shape changes take place during the formation of the ventral furrow (VF) at the beginning of Drosophila gastrulation. At the cellular level, this morphogenetic event demands close coordination of ...
    • Structural and morphological studies on SiOxNy thin films 
      Criado, D.; Zúñiga Páez, Alejandro; Pereyra, I. (ELSEVIER, 2008-05-01)
      In this work, the structure and morphology of silicon oxynitride films deposited by the PECVD technique were studied. The films were deposited under two different conditions: (a) SiOxNy with chemical compositions varying ...
    • Thermal stability and recrystallization of nanocrystalline Ti produced by cryogenic milling 
      Sun, Fusheng; Zúñiga Páez, Alejandro; Rojas Goñi, Paula; Lavernia, Enrique J. (MINERALS METALS MATERIALS SOC, 2006-07)
      The grain growth, thermal stability, and recrystallization behavior of a cryomilled Ti alloy with a grain size of about 21.2 nm were examined using differential scanning calorimetry, X-ray diffraction, and transmission ...