Results 21 to 30 of about 127,178 (163)

Thermoeconomic Analysis of Concentrated Solar Power Plants Based on Supercritical Power Cycles

open access: yesApplied Sciences, 2023
Solar thermal power plants are an alternative for the future energy context, allowing for a progressive decarbonisation of electricity production. One way to improve the performance of such plants is the use of supercritical CO2 power cycles.
María José Montes   +3 more
doaj   +1 more source

Meeting High Stability and Efficiency in Hybrid Light‐Emitting Diodes Based on SiO2/ZrO2 Coated CsPbBr3 Perovskite Nanocrystals

open access: yesAdvanced Functional Materials, Volume 30, Issue 40, October 1, 2020., 2020
The novel SiO2/ZrO2 coating of the CsPbBr3 emitting core leads to highly emissive and stable hybrid perovskite nanoparticles of high interest for color downconverting purposes in light‐emitting diodes. Indeed, these devices feature a high luminous efficiency (≈75 Lm W−1) and outstanding stabilities of about 200 and 700 h operating at 100 and 10 mA ...
Yanyan Duan   +6 more
wiley   +1 more source

Lo que el ojo no ve: un estudio de caso basado en procesos de indagación co(wiki)laborativos

open access: yesRIED: Revista Iberoamericana de Educación a Distancia, 2007
El proceso de convergencia al que se están enfrentando las universidades europeas en estos momentos, requerirá de cambios metodológicos sustanciales que provean nuevos entornos de enseñanza-aprendizaje a los estudiantes del siglo XXI.
Iván M. Jorrín Abellán   +10 more
doaj   +1 more source

Thermoeconomic Coherence: A Methodology for the Analysis and Optimisation of Thermal Systems

open access: yesEntropy, 2016
In the field of thermal systems, different approaches and methodologies have been proposed to merge thermodynamics and economics. They are usually referred as thermoeconomic methodologies and their objective is to find the optimum design of the thermal ...
Antonio Rovira   +2 more
doaj   +1 more source

Improved Application of Hyperspectral Analysis to Rock Art Panels from El Castillo Cave (Spain)

open access: yesApplied Sciences, 2021
Rock art is one of the most fragile and relevant cultural phenomena in world history, carried out in shelters or the walls and ceilings of caves with mineral and organic substances.
Vicente Bayarri   +3 more
doaj   +1 more source

The colonial hispanicamerican world in the Revista de Filosofía [PDF]

open access: yes, 2017
En la extensa colección de la Revista de Filosofía (Buenos Aires, 1915 - 1929) hay algunos artículos cuyo tema es la historia, la sociedad o la cultura en la América Hispana colonial.
Fernandez, Cristina Beatriz
core   +1 more source

Hyperspectral Imaging Techniques for the Study, Conservation and Management of Rock Art

open access: yesApplied Sciences, 2019
Paleolithic rock art is one of the most important cultural phenomena in the history of mankind. It was made by making incisions and/or applying natural pigments mixed with water or organic elements on a rock surface, which for millennia has been ...
Vicente Bayarri   +2 more
doaj   +1 more source

La educación estadística en la formación de ingenieros

open access: yesRevista Científica, 2013
he work presented here is part of one of the questions that led to the com- pletion of the doctoral thesis called teaching practices of teachers of pro- bability and statistics in engineering schools.
PEDRO ROCHA SALAMANCA
doaj   +3 more sources

Continuous Battery Health Diagnosis by On-Line Internal Resistance Measuring

open access: yesEnergies, 2019
Energy storage in an uninterruptible power supply (UPS) is one of the most frequent applications of batteries. This can be found in hospitals, communication centers, public centers, ships, trains, etc.
Jaime de la Peña Llerandi   +2 more
doaj   +1 more source

Analysis of a solar driven ORC-absorption based CCHP system from a novel exergy approach

open access: yesEnergy Conversion and Management: X, 2023
The present study comprehensively analyses the thermodynamic performance of a zero-emissions solar driven trigeneration system using a numerical approach.
Jesús García-Domínguez   +2 more
doaj   +1 more source

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