Results 11 to 20 of about 9,970 (224)
Journal of Materials Research and Technology, 2022 Overheating resulting from the circulation of high electric currents (in the order of tens of amperes) that some electronic devices undergo when they are in operation, can induce structural modifications such as mechanical stresses that could reduce ...
S. Román-Sánchez +5 more
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Silicate-based persistent phosphors
Open Ceramics, 2021 Eu2+-doped alkaline-earth silicates are the second most studied group of persistent luminescent inorganic phosphors after aluminates, such as SrAl2O4. Silicates are comparable with the aluminates in terms of chemical stability, high quantum efficiency ...
L. Fernández-Rodríguez +2 more
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Stress dynamics during O-T phase transitions in lead-free KNN-based piezoelectric ceramics
Materials & Design, 2023 In this study, we have investigated the stress dynamics arising from the Orthorhombic-Tetragonal Polymorphic Phase Boundary (PPB) in lead-free potassium sodium niobate (KNN)-based ceramics and its temperature dependence, as a means to elucidate the ...
A. Moure +4 more
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Precedente, 2021 Sara Lagi obtuvo el grado de doctora en Historia del Pensamiento Político Europeo por la Universidad de Perugia en el año 2005. Actualmente es catedrática de la Universidad de Turín; también ha sido docente en la Universidad de Florencia (2007-2009 ...
Augusto Fernando Carrillo Salgado
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In situ thermal runaway of Si-based press-fit diodes monitored by infrared thermography
Results in Physics, 2020 Overvoltage is one of the main causes that lead to the failure of electronic devices. This makes fundamental to understand the electrical and thermal mechanisms engaged in the process.
A. Moure +4 more
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SSRN Electronic Journal, 2020 AbstractIn this article, I argue,inter alia, that Kelsen’s mature view—as expressed in, and around the time of, the second edition ofReine Rechtslehre—was that of a metaethical relativist, and that the commitment to metaethical relativism was the reason why Kelsen defended democracy as well as tolerance in the shape of a constitutionally guaranteed ...
openaire +2 more sources
Sintering/Crystallization and Viscosity of Sealing Glass-Ceramics
Crystals, 2021 Two glass-ceramics sealants for solid-oxide fuel cells (SOFC) in the system BaO/SrO-MgO-B2O3-SiO2 have been analysed according to relevant sealing parameters such as sintering and crystallization of the glass powders and dilatation and viscosity ...
Sonia Rodríguez-López +1 more
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Boletín de la Sociedad Española de Cerámica y Vidrio, 2016 In this study, a dense bioactive ceramic, with nominal composition (wt.%) 40 Ca3(PO4)2–60 CaMg(SiO3)2, was prepared by solid state sintering of homogeneous compacted mixtures of fine synthetic Ca3(PO4)2 and CaMg(SiO3)2 powders.
Ismael H. García-Páez +5 more
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Sequência: Estudos Juridicos e Politicos, 2010 Um dos traços mais marcantes da longa trajetória intelectual de Hans Kelsen foi a busca pela construção de um conhecimento jurídico puro, isento de qualquer consideração a respeito do conteúdo do direito. A compreensão desse leitmotiv depende do exame da
Paulo Sávio Peixoto Maia
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In Situ Graded Ceramic/Reduced Graphene Oxide Composites Manufactured by Spark Plasma Sintering
Ceramics, 2020 The present work merges two key strategies for the manufacturing of advanced ceramics, in particular, the development of functionally graded materials (FGMs) and the addition of graphene-based fillers into a ceramic matrix.
Cristina Ramírez +3 more
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