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Design and development of a thermochemical energy storage system based on the redox couple Mn2O3/Mn3O4 for concentrated solar power plants
(2022-03-01)
The future energy grid based on renewable energy sources will require strong support from energy storage systems since renewable energy cannot be managed. Concentrated solar power is one of the leading technologies to ...
Dificultades de aprendizaje del modelo de sonido: una revisión de la literatura
(Universitat Autónoma de Barcelona, 2021-06)
Learning the scientific model of sound (ScMS) is present in the science curriculum of all educational levels and is a critical component of scientific literacy. This paper presents a systematic review of students' understanding ...
Downscaling of surface moisture flux and precipitation in the Ebro Valley (Spain) using analogues and analogues followed by random forests and multiple linear regression
(Copernicus Gesellschaft, 2011)
In this paper, reanalysis fields from the ECMWF have been statistically downscaled to predict from large-scale atmospheric fields, surface moisture flux and daily precipitation at two observatories (Zaragoza and Tortosa, ...
Characterizing Subsurface Rectangular Tilted Heat Sources Using Inductive Thermography
(MDPI, 2020-08-06)
In this study, we characterize the lateral dimension, depth, and inclination of buried tilted rectangular heat sources from time domain temperature data measured at the surface. The heat sources are representative for ...
Critical behavior and magnetocaloric effect in rare-earth based intermetallic materials.
(2021-11-19)
Esta tesis engloba un detallado estudio de las propiedades térmicas y magnéticas de hasta cinco familias de compuestos intermetálicos basados en tierras raras. En particular, este trabajo se centra en el estudio del ...
Vertical Cracks Excited in Lock-in Vibrothermography Experiments: Identification of Open and Inhomogeneous Heat Fluxes
(MDPI, 2022-03-17)
Lock-in vibrothermography has proven to be very useful to characterizing kissing cracks producing ideal, homogeneous, and compact heat sources. Here, we approach real situations by addressing the characterization of ...
Sizing the Depth and Width of Narrow Cracks in Real Parts by Laser-Spot Lock-In Thermography
(MDPI, 2021-09-28)
We present a complete characterization of the width and depth of a very narrow fatigue crack developed in an Al-alloy dog bone plate using laser-spot lock-in thermography. Unlike visible micrographs, which show many surface ...
Contribution to material thermal characterization techniques and subsurface defect detection using infrared thermography and other imaging methods.
(2017-05-25)
Esta tesis doctoral utiliza métodos de generación de imágenes para estudiar la difusión de calor en una muestra. Dos variantes principales fueron empleadas. La primera utiliza variaciones en el índice de refracción, inducidas ...
Optimization of solution-processed oligothiophene:fullerene based organic solar cells by using solvent additives
(Beilstein Institut, 2013-10)
The optimization of solution-processed organic bulk-heterojunction solar cells with the acceptor-substituted quinquethiophene DCV5T-Bu-4 as donor in conjunction with PC61BM as acceptor is described. Power conversion ...
Shortcuts to adiabatic rotation of a two-ion chain
(IOP, 2021-10)
We inverse engineer fast rotations of a transversally tight, linear trap with two ions for a predetermined rotation angle and time, avoiding final excitation. Different approaches are analyzed and compared when the ions ...