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Mostrando ítems 61-70 de 172
Simulación del proceso de fractura de estructuras de concreto simple, con el modelo de fisura distribuida rotante en el marco del método de los elementos finitos.
(2019-07-20)
El modelo constitutivo de fisura distribuida rotante, permite representar el comportamiento de materiales cuasi--frágiles como el concreto simple que se encuentran sometidos a esfuerzos predominantemente de tensión. En ...
Structural styles of the Camisea fold-and-thrust belt, southeast Peru
(American Association of Petroleum Geologists - AAPGUS, 2018)
The Camisea multi-trillion cubic feet (tcf) gas and condensate fields are located at the southern edge of the Ucayali Basin of southeastern Peru. The Ordovician to Neogene sedimentary succession was deformed by late Miocene ...
Study of the vertical transport in p-doped superlattices based on group III-V semiconductors
(2011-02)
The electrical conductivity σ has been calculated for p-doped GaAs/Al0.3Ga0.7As and cubic GaN/Al0.3Ga0.7N thin superlattices (SLs). The calculations are done within a self-consistent approach to the
k
...
Electrocatalytic oxidation of ethanol on Sn((1-x))Ir((x))O(2) electrodes in acid medium
(SPRINGER, 2008)
The electrochemical oxidation of ethanol at Sn((1-x))Ir (x) O(2) electrodes (with x = 0.01, 0.05, 0.1 and 0.3) was studied in 0.1 mol L(-1) HClO(4) solution. Electrolysis experiments were carried out and the reaction ...
Conductivity in SnO2 polycrystalline thick film gas sensors: Tunneling electron transport and oxygen diffusion
(Elsevier, 2014-01)
Conduction mechanisms in polycrystalline SnO2 thick sensing films were investigated by means of DC electrical resistance during heating?cooling cycles. Samples were maintained at relatively high temper- atures in H2 or ...
Woven Antennas Fabrication: Conductive Linen and Conductive Cloth Technologies Comparisons
(IEEE, 2018)
The development of woven antennas will enable novel applications in communications, sensing and safety, due to its inherent features such flexibility and textile-integration. For these reasons, this technology has attracted ...
Chemisorption and sensitivity at semiconductor sensors revisited
(Elsevier Science SA, 2019-04)
In this work we derived the adsorption isotherms for non-dissociative and dissociative chemisorption of oxygen on a semiconductor surface. We extended the Wolkenstein theory for dissociative chemisorption and re-examined ...
Application of Micro-Raman Spectroscopy to the Study of Yttria-Stabilized Tetragonal Zirconia Polycrystal (Y-TZP) Phase Transformation
(Soc Applied Spectroscopy, 2015-07-01)
The aim of this study was to perform micro-Raman spectroscopy as an alternative and nondestructive method to identify the phase transformation of zirconia after mechanical stress. The groups evaluated were experimental ...
Micro-Raman Spectroscopy of Zircon (ZrSiO4) Mineral at Annealing Conditions Usually Applied in Zircon Fission-Track Annealing Dataset
(Amer Scientific Publishers, 2020-03-01)
Raman analyzes were performed on zircon from a syenite located in the Pocos de Caldas Complex, Brazil, with a fission-track (FT) zircon age of 81.4 +/- 6.8 Ma. Three isochronous heating (1, 10 and 100 hours) of zircon ...
Organic solvent–luteolin interactions studied by FT-Raman, Vis-Raman, UV-Raman spectroscopy and DFT calculations
(Elsevier Science, 2015-05)
The interactions of luteolin with three alcohols (methanol, 1-propanol, 1-butanol) and dimethylsulfoxide (DMSO) were studied by FT-Raman, Vis-Raman and UV-Raman spectroscopies, coupled to density functional theory calculations. ...