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Mostrando ítems 181-190 de 633
Artículo
Electrochemically exfoliated graphene-like nanosheets for use in ceramic nanocomposites
(Multidisciplinary Digital Publishing Institute (MDPI), 2020)
In this work, the synthesis of graphene-like nanosheets (GNS) by an electrochemical exfoliation method, their microstructural characterization and their performance as fillers in a ceramic matrix composite have been assessed. ...
Artículo
Electrical, Thermo-Electrical, and Electromagnetic Behaviour of Epoxy Composites Reinforced with Graphene Nanoplatelets with Different Average Surface Area
(Multidisciplinary Digital Publishing Institute (MDPI), 2022)
The influence of the average surface area of different graphene nanoplatelets (GNP) on the thermo-electrical behaviour, associated with Joule heating, and the attenuation of electromagnetic signals of epoxy composites has ...
Artículo
Insight into the role of temperature, time and pH in the effective zirconium retention using clay minerals
(Elsevier, 2022)
The use of zirconium in chemical industries generates a potential risk of Zr contamination in the environment, with particular concern for the decommissioning of uranium-graphite reactors. Among the natural adsorbents ...
Artículo
A Toggle-Switch and a Feed-Forward Loop Engage in the Control of the Drosophila Retinal Determination Gene Network
(Frontiers Media, 2019)
Dipterans show a striking range of eye sizes, shapes, and functional specializations. Their eye is of the compound type, the most frequent eye architecture in nature. The development of this compound eye has been most ...
Artículo
Mössbauer study of a Fe–Zr–B–Cu–(Ge, Co) nanocrystalline alloy series
(Elsevier, 2006)
Amorphous and nanocrystalline Fe–Zr–B–Cu alloys with partial substitution of Co for Fe and Ge for B have been studied by Mössbauer spectrometry (MS). The compositional and microstructural dependence of the different hyperfine ...
Artículo
Universal behavior for magnetic entropy change in magnetocaloric materials: An analysis on the nature of phase transitions
(The American Physical Society, 2010-06-16)
A universal curve for the change in the magnetic entropy has been recently proposed for materials with second-order phase transitions. In this work we have studied the universal behavior of the magnetocaloric effect in the ...
Artículo
Comment to "Impact of Daylight Saving Time in Circadian Timing System: an expert statement"
(Elsevier, 2019-02-19)
Comment letter to the editor
Artículo
Influence of La and Ce additions on the magnetocaloric effect of Fe–B–Cr-based amorphous alloys
(American Institute of Physics, 2011)
The magnetic entropy change (ΔSM), temperature of peak ΔSM (Tpk) and refrigerant capacity (RC) in Fe(RE)80B12Cr8 (RE = La, Ce, or Gd) alloys were studied. Increasing La, Ce, and Gd content led to relatively constant, ...
Artículo
High temperature mechanical properties of polycrystalline Y2SiO5
(Elsevier, 2021)
The high temperature mechanical properties of polycrystalline Y2SiO5 were studied in compression at temperatures in the range of 1200–1400 °C, both in constant strain rate and constant stress experiments. To examine the ...
Artículo
Nanostructured sonogels
(Trans Tech Publications Ltd, 2009)
Acoustic cavitation effects in sol-gel liquid processing permits to obtain nanostructured materials, with size-dependent properties. The so-called "hot spots" produce very high temperatures and pressures which act as ...