Exploració per autor "Cañadas Lorenzo, Juan Carlos"
Ara es mostren els items 1-18 de 18
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A Free accessible individual-based simulator enabling virtual experiments on soil organic matter processes in classroom
(Universitat Politècnica de Catalunya. Institut de Ciències de l'Educació, 2013-09)
Article
Accés obertThis work addresses and aims to fulfil a very clear need in teaching biosystem engineering. When introducing students to the complexity of soil processes, one of the frustrations that teachers ofen experience is ... -
Aprendizaje colaborativo en base a problemas mediante el uso del foro electrónico
(2012-06-15)
Capítol de llibre
Accés obertLa incorporación de las plataformas digitales en la educación impulsa nuevas maneras de aprender. La universidad promueve la participación sincrónica y asincrónica entre sujetos que no están en el mismo lugar, ni al mismo ... -
Charge storage and retention in electret dielectric layers for energy harvesting applications
(Institute of Electrical and Electronics Engineers (IEEE), 2014)
Text en actes de congrés
Accés restringit per política de l'editorialBy providing a permanent electric polarization, electrets have a wide range of applications in different fields like sensors and actuators, energy harvesting or biomedicine. Stable electrets with silicon-based compatible ... -
Comparative dielectric and thermally stimulated-depolarization-current studies of the liquid crystal dimers 1¿,9¿-bis(4-cyanobiphenyl-4'-yl) nonane and heptane and a binary mixture between them, close to the glass transition
(American Institute of Physics (AIP), 2022-11-21)
Article
Accés obertWe have performed dielectric spectroscopy and thermally stimulated-depolarization-current experiments to study the molecular dynamics of the twist-bend nematic phase close to the glass transition of two members of the ... -
Comparative study of mechanical and electrical relaxations in poly(etherimide). Part 2
(1998-05)
Article
Accés restringit per política de l'editorialThe curves describing the relaxation behaviour of poly(etherimide) at several frequencies shows in the dielectric lossÈtemperature plot c and b relax- ations centred at [95¡C and 100¡C, respectively, at 10 Hz. The glassÈrubber ... -
Comparison of pulsed electroacoustic and thermally stimulated depolarization current measurements of thermally poled PET electrets
(Elsevier, 2022-09-01)
Article
Accés restringit per política de l'editorialWe have compared measurements of a set of polyethylene terephthalate (PET) electret samples by means of pulsed electroacoustic method (PEA) and thermally stimulated depolarization current (TSDC) techniques. Samples where ... -
Confección y gestión automática de exámenes tipo test
(Universidad de Cádiz, 2016)
Comunicació de congrés
Accés restringit per política de l'editorialEl presente trabajo describe la implementación de una aplicación informática como recurso docente, diseñada como plataforma para la elaboración, utilización y corrección de controles formativos y exámenes de evaluación. ... -
Effect of humidity in charge formation and transport in LDPE
(2013-04-02)
Article
Accés restringit per política de l'editorial -
Effects of UV radiation on the charge trapping capability of PET
(Institute of Physics (IOP), 2019-02-06)
Article
Accés obertPoly(ethylene terephthalate) (PET) is able to retain space charge in traps, as is usual in dielectric materials. This allows the material to attain an almost permanent polarization when space charge is displaced by an ... -
ESTÀTICA I DINÀMICA (Examen 1r Quadr.)
(Universitat Politècnica de Catalunya, 2005-01-11)
Examen
Accés restringit a la comunitat UPC -
ESTÀTICA I DINÀMICA (Examen 2n Quadr.)
(Universitat Politècnica de Catalunya, 2004-06-18)
Examen
Accés restringit a la comunitat UPC -
Estudio del efecto de la cristalización fría y del envejecimiento físico en las relajaciones de los polímeros mediante la técnica de corrientes estimuladas térmicamente
(Universitat Politècnica de Catalunya, 1999-02-05)
Tesi
Accés obertLos resultados que se analizan en este trabajo proceden fundamentalmente de dos polímeros (PET, PEN) y hemos utilizado esencialmente la técnica TSC centrándonos en el comportamiento de los mecanismos de conducción ligados ... -
INDISIM-SOM, an individual-based simulator on a website for experimenting and investigating diverse dynamics of Carbon and Nitrogen in mineral soils
(2009)
Text en actes de congrés
Accés restringit per política de l'editorialINDISIM-SOM models the dynamics and evolution of C and N related to organic matter in soils by using individual-based simulations. It is an Individual-based Model that controls a group of microbial cells at each time step, ... -
Influence of internal flexibility on the double glass transition in a series of odd non-symmetric liquid crystal dimers characterised by dielectric measurements
(2017-04-11)
Article
Accés obertDielectric measurements (thermally stimulated depolarisation currents and broadband dielectric spectroscopy) have been performed near the glass transition to study the glass transition on the odd non-symmetric liquid crystal ... -
Method to distinguish between space-charge and dipolar relaxation in the TSDC spectra of polyethylene electrical insulation
(2010)
Comunicació de congrés
Accés obertMedium-voltage cross-linked polyethylene (MV-XLPE) cables have an important role in the electrical power distribution system. For this reason, the study of XLPE insulation may lead to improve cable features and lifetime. ... -
Project of the academic performance improvement
(Universitat Politècnica de Catalunya, 2022-09)
Text en actes de congrés
Accés obertThe transition of students from high school to university is a changing and complicated stage. It is during the initial phase when most drop-outs from engineering degrees occur. There are several reasons for this, however, ... -
Proyecto de mejora del rendimiento académico. Fase Inicial : primer curso del Grado de Ingeniería de la ESEIAAT
(Universitat Politècnica de Catalunya. Institut de Ciències de l'Educació, 2021-05)
Article
Accés obertLa transición del alumnado del instituto a la universidad es compleja y costosa. Durante las fases iniciales es donde se producen la mayor parte de los abandonos en las titulaciones de ingeniería. Los motivos son varios, ... -
Sublinear dispersive conductivity in polyetherimides by the electric modulus formalism
(2015-12)
Article
Accés obertTwo commercially available polyetherimides, Ultem 1000 and Ultem 5000, have been studied by means of Dynamic Electrical Analysis. Results show that at temperatures above the glass transition dielectric response is highly ...
