127 research outputs found

    La explotación didáctica de las canciones en el aula de italiano como lengua extranjera

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    [Resumen] No cabe duda de que las canciones, en el marco de la enseñanza/aprendi- zaje de un idioma, además de las posibles explotaciones didácticas que ofrecen desde un punto de vista léxico, gramatical o comunicativo, supo- nen un excelente ejemplo de la cultura de un país. Esta comunicación se centrará en la explotación didáctica de las canciones para el desanollo de la competencia tanto cultural como lingüística y comunicativa de los alum- nos de italiano. Se reflexionará, con especial referencia al aula de italiano como lengua extranjera, sobre el uso de las canciones en la clase de idio- mas, sobre los distintos criterios para su selección y sobre el amplio abani- co de actividades que se puede llevar a cabo con ellas, con ejemplos de su utilización

    Cosmología no estándar: presente y futuro del Universo

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    Tesis doctoral inédita. Universidad Autónoma de Madrid, Facultad de Ciencias, Departamento de Física Teórica. Fecha de lectura: 19-07-201

    Citrate and Polyvinylpyrrolidone Stabilized Silver Nanoparticles as Selective Colorimetric Sensor for Aluminum (III) Ions in Real Water Samples

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    The use of silver nanoparticles stabilized with citrate and polyvinylpyrrolidone as a sensor for aluminum ions determination is proposed in this paper. These non-functionalized and specific nanoparticles provide a highly selective and sensitive detection system for aluminum in acidic solutions. The synthesized nanoparticles were characterized by transmission electron microscopy. Surface plasmon band deconvolution analysis was applied to study the interaction between silver nanoparticles and aluminum ions in solution. The interaction band in the UV-visible region was used as an analytical signal for quantitation purposes. The proposed detection system offers an effective AND wide linearity range (0.1-103 nM), specificity for Al(III) in THE presence of other metallic ions in solution, as well as high sensitivity (limit of detection = 40.5 nM). The proposed silver-nanoparticles-based sensor WAS successfully used for detecting Al(III) in real water samples.Spanish Ministerio de Economía y Competitividad, MinECo, CTQ2016-78703-P (AEI/FEDER, UE)España, Universidad de Sevilla ,V Plan Propio Grupos Emergentes (PP2016-5937)Junta de Andalucía (2017/FQM-386)CITIUS VI PP USO SSGG (1804031606

    Desarrollo y gestión de un espacio lúdico-educativo. Un programa mentor basado en aprendizaje-servicio

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    Este proyecto continuará el trabajo iniciado en dos PIMCD anteriores sobre metodología de aprendizaje-servicio dirigidos a la atención de la infancia vulnerable. Se desarrollará un programa mentor y se centrará en los recursos lúdicos-educativos

    Ayuno y sus modalidades como estrategia en salud: resultado de un ensayo clínico en obesidad

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    II Congreso de Alimentación, Nutrición y Dietética. Avances en Nutrición y Dietética Clínica: Prevención, Tratamiento y Gestión - Rol del Dietista-Nutricionist

    Quantum gravity phenomenology at the dawn of the multi-messenger era-A review.

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    The exploration of the universe has recently entered a new era thanks to the multi-messenger paradigm, characterized by a continuous increase in the quantity and quality of experimental data that is obtained by the detection of the various cosmic messengers (photons, neutrinos, cosmic rays and gravitational waves) from numerous origins. They give us information about their sources in the universe and the properties of the intergalactic medium. Moreover, multi-messenger astronomy opens up the possibility to search for phenomenological signatures of quantum gravity. On the one hand, the most energetic events allow us to test our physical theories at energy regimes which are not directly accessible in accelerators; on the other hand, tiny effects in the propagation of very high energy particles could be amplified by cosmological distances. After decades of merely theoretical investigations, the possibility of obtaining phenomenological indications of Planck-scale effects is a revolutionary step in the quest for a quantum theory of gravity, but it requires cooperation between different communities of physicists (both theoretical and experimental). This review, prepared within the COST Action CA18108 "Quantum gravity phenomenology in the multi-messenger approach", is aimed at promoting this cooperation by giving a state-of-the art account of the interdisciplinary expertise that is needed in the effective search of quantum gravity footprints in the production, propagation and detection of cosmic messengers. (C) 2022 The Authors. Published by Elsevier B.V

    Magnetic order and disorder in nanomagnets probed by superconducting vortices

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    We have studied two nanomagnet systems with strong (Co/Pd multilayers) and weak (NdCo alloy films) stray magnetic fields by probing the out-of-plane magnetic states with superconducting vortices. The hybrid samples are made of array of nanomagnets embedded in superconducting Nb thin films. The vortex motion detects relevant magnetic state features, since superconducting vortices are able to discriminate between different magnetic stray field strengths and directions. The usual matching effect between the superconducting vortex lattice and the periodic pinning array can be quenched by means of disorder magnetic potentials with strong stray fields at random. Ordered stray fields retrieve the matching effect and yield asymmetry and shift in the vortex dissipation signal. Furthermore vortices can discriminate the sizes of the nanomagnet magnetic domains, detecting magnetic domain sizes as small as 70 nm. In addition, we observe that the vortex cores play the crucial role instead of the supercurrents around the vortex.We thank Spanish MINECO grants FIS2013-45469, FIS2016-76058 (AEI/FEDER, UE), Spanish CM grant S2013/MIT-2850. IMDEA Nanociencia acknowledges support from the ‘Severo Ochoa’ Programme for Centres of Excellence in R&D (MINECO, Grant SEV-2016-0686). DG acknowledges RYC-2012-09864, S2013/MIT-3007 and ESP2015-65597-C4-3-R for financial support.Peer reviewe
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