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Study of Ni microstructural changes when subjected to high energy milling.
Research by this working group's takes as a principal aim the study and manufacture of bulk metal glass based copper (Cu-Ni-Zr) by mechanical alloying. First, the characterization of the milled pure copper, Cu-Ni and Cu-Zr ...
Fungal biofilms: Formation, resistance and pathogenicity
(2015-01-01)
Biofilm formation has been detected quite early in the fossil record (~3.25 billion years ago) and is common throughout a diverse range of organisms in both the Archaea and bacteria lineages, including the ‘living fossils’ ...
SPECIATION AND CHARACTERIZATION OF E-WASTE, USING ANALYTICAL TECHNIQUES
(2016)
Electronic waste (e-waste), have a high potential as a source of precious metals, since they can contain metals like silver, gold, platinum, copper, zinc, nickel, tin and others. In this paper some e-waste were characterized ...
Inhomogeneous molecular ring around the B[e] supergiant LHA 120-S 73.
(EDP Sciences, 2016-07)
Context. B[e] supergiants are evolved massive stars, enshrouded in a dense wind and surrounded by a molecular and dusty disk. Themechanisms that drive phases of enhanced mass loss and mass ejections, responsible for the ...
Resolving the circumstellar environment of the galactic B[e] supergiant atar MWC 137 from large to small scales
(IOP Publishing, 2017-09)
The Galactic object MWC 137 has been suggested to belong to the group of B[e] supergiants. However, with its large-scale optical bipolar ring nebula and high-velocity jet and knots, it is a rather atypical representative ...
Molecular emission from GG Carinae's circumbinary disk
(Edp Sciences, 2013-01)
The appearance of the B[e] phenomenon in evolved massive stars such as B[e] supergiants is still a mystery. While these stars are generally found to have disks that are cool and dense enough for efficient molecule and dust ...
The interplay between pulsations and mass loss in the blue supergiant 55 Cygnus = HD 198478
(EDP Sciences, 2015-09)
Blue supergiant stars are known to display photometric and spectroscopic variability that is suggested to be linked to stellar pulsations. Pulsational activity in massive stars strongly depends on the star´s evolutionary ...