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Mostrando ítems 31-40 de 145
Artículo
Performance improvement in olive stone's combustion from a previous carbonization transformation
(Elsevier, 2018-09)
Under the framework of circular economy, agricultural wastes are an interesting carbon-based feedstock for thermal energy and power generation. Their use could extend the availability of biomass-based fuel and, at the same ...
Artículo
On the use of classical JMAK crystallization kinetic theory to describe simultaneous processes leading to the formation of different phases in metals
(2015)
The classical theory of Johnson-Mehl-Avrami-Kolmogorov (JMAK) is widely used to describe the kinetics of crystallization even when the premises required for its application are not strictly fulfilled. In this paper we ...
Artículo
Cellular automata simulations on nanocrystallization processes: From instantaneous growth approximation to limited growth
(Elsevier, 2011-07)
Cellular automata simulations have been performed to simulate the crystallization process under a limited growth approximation. This approximation resembles several characteristics exhibited by nanocrystalline microstructures ...
Artículo
Monolithic supports based on biomorphic SiC for the catalytic combustion of hydrogen
(Royal Society of Chemistry, 2016)
Catalytic hydrogen combustion was studied with H2/air mixtures in conditions that simulate the H2 concentration of the exhaust gases from fuel cells (3–4% v/v H2 in air). Pt-impregnated monoliths based on porous biomorphic ...
Artículo
¿Qué investigación didáctica en el aula de física se publica en España?: una revisión crítica de la última década para el caso de Educación Secundaria
(Revista Enseñanza de las Ciencias, 2018)
Se presenta un estudio exploratorio y descriptivo sobre la investigación didáctica publicada en España durante la última década relativa a la enseñanza de la física en educación secundaria. Al centrar la atención en aquellos ...
Artículo
A unified approach to describe the thermal and magnetic hysteresis in Heusler alloys
(American Institute of Physics Publising LLC, 2016)
Different excitations, like temperature, magnetic field, or pressure, can drive a martensitic transition in Heusler alloys. Coupled phenomena in these materials lead to interesting magnetocaloric and barocaloric effects ...
Artículo
Anisotropy field distribution in soft magnetic Hitperm alloys submitted to different field annealing processes
(Elsevier, 2016)
The magnetic anisotropy field distribution is discussed for Hitperm alloys annealed under different field conditions leading to different induced magnetic anisotropies: zero (ZF), transversal (TF), and longitudinal (LF) ...
Artículo
Seasonal induction of cluster roots in Embothrium coccineum J.R. Forst. & G. Forst. in the field: factors that regulate their development
(Instituto de Investigaciones Agropecuarias, INIA, Chile, 2010)
Embothrium coccineum J.R. Forst. & G. Forst. (Proteaceae) is a tree that grows successfully in nutrient poor soils of southern Chile at full sunlight. Under these conditions it develops cluster roots (CR). However, the ...
Artículo
Environmentally friendly monolithic highly-porous biocarbons as binder-free supercapacitor electrodes
(De Gruyter, 2018)
A simple, low-cost and environmentally friendly method has been used to obtain highly porous biomorphic carbon monoliths with a good combination of interconnected macro-, meso- and microporosity, and good electrical ...
Artículo
Magnetocaloric response of amorphous and nanocrystalline Cr-containing Vitroperm-type alloys
(Elsevier, 2016)
The broad compositional range in which transition metal (TM) based amorphous alloys can be obtained, yields an easily tunable magnetocaloric effect (MCE) in a wide temperature range. In some TM-based alloys, anomalous ...