2024-03-28T21:46:47Zhttps://idus.us.es/oai/requestoai:idus.us.es:11441/491502024-02-13T20:17:22Zcom_11441_10828com_11441_10802com_11441_10690com_11441_10848col_11441_10831col_11441_10851
Changes in soil water repellency increased preferential flow and soil erosion risk after intense wildfire (Huelva, 2004)
Pascual Granged, Arturo José
Martínez Zavala, Lorena María
Jordán López, Antonio
Gil Torres, Juan
Bellinfante Crocci, Nicolás
Escalante, E.
Segovia, B.
Sánchez, R. M.
Díaz Raviña, Montserrat
Universidad de Sevilla. Departamento de Física Aplicada I
Universidad de Sevilla. Departamento de Cristalografía, Mineralogía y Química Agrícola
Universidad de Sevilla. RNM364: Med_soil Research Group
2016-11-25T13:41:17Z
2016-11-25T13:41:17Z
2016-11-25T13:41:17Z
2010
info:eu-repo/semantics/conferenceObject
978-84-8408-583-6
http://hdl.handle.net/11441/49150
https://idus.us.es/xmlui/handle/11441/49150
eng
Fuegored 2010: Jornadas Internacionales : Investigación y gestión para la protección del suelo y restauración de los ecosistemas forestales afectados por incendios forestales
http://www.iiag.csic.es/fuegored/libro.pdf
Santiago de Compostela
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Consejo Superior de Investigaciones Científicas, CSIC
oai:idus.us.es:11441/796192024-02-17T16:28:31Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
Kinks supersónicos en redes repulsivas
Jiménez, Noé
Sánchez Morcillo, Víctor J.
García Raffi, Luis M.
Archilla, Juan F. R.
Universidad de Sevilla. Departamento de Física Aplicada I
Universidad de Sevilla. FQM280. Física No Lineal
Ministerio de Ciencia e Innovación (MICIN). España
Repulsive lattices
kinks
We have founds supersonics kinks in a model for the cation layer of mica muscovite. They are proposed as a posible explanation for the dark tracks in the mineral
2018-10-24T09:41:15Z
2018-10-24T09:41:15Z
2018-10-24T09:41:15Z
2013-07-07
info:eu-repo/semantics/article
Kinks supersónicos en redes repulsivas, N. Jiménez, V. Sánchez-Morcillo, L. M. García-Raffi, J.F.R. Archilla, En: Comunicaciones y posters : XXXIV Reunión Bienal de la Real Sociedad Española de Física y del 23 Encuentro Ibérico de Enseñanza de la Física, celebrados en Valencia del 15 al 19 de julio de 2013, . Sanchís-Lozano, MA, Editor. RSEF, Madrid, p. 726 (2013). ISBN: 978-84-616-5607-3.
https://hdl.handle.net/11441/79619
spa
FIS2008-04848
https://rsef.es/actividades-elecciones/bienales/item/765-libro-de-resumenes-de-xxxiv-reunion-bienal-y-23-encuentro-iberico-de-ensenanza-de-la-fisica-valencia-2013
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Real Sociedad Española de Física
oai:idus.us.es:11441/1370792022-09-15T09:48:17Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
Morfología glaciar y postglaciar en el Parque Natural de los Collados del Asón (Cantabria)
Frochoso Sánchez, Manuel
González Pellejero, Raquel
Allende Álvarez, Fernando
Martínez Aguirre, Aránzazu
Universidad de Sevilla. Departamento de Física Aplicada I
Gobierno de Cantabria
Glacial morphology
Glacial phases
Upper Pleistocene
Asón platform
Cantabrian Mountains
The Asón massif is a carbonated low inclined platform of medium height, which rises to 1,618
meters at the Picón del Fraile peak. The Asón platform is a part of the Castro Valnera Massif, next to the
upper Trueba and Miera valleys. These mountains are included in Basco-Cantabrian system, a single folded
chain built with carbonated Cretaceous materials. The Asón platform was occupied by an icecap, with several
ice tongues to the east. One of these tongues occupied the Asón gorge; another was directed towards the Soba
valley. The front-lateral moraines of these glaciers are well defined and we obtained the absolute age (OSL,
U-Th and 14C) of the till upper levels. From these ages, we conclude that here the local glacial maximum
ended at 40 ka.
2022-09-15T09:48:16Z
2022-09-15T09:48:16Z
2022-09-15T09:48:16Z
2012
info:eu-repo/semantics/conferenceObject
Frochoso Sánchez, M., González Pellejero, R., Allende Álvarez, F. y Martínez Aguirre, A. (2012). Morfología glaciar y postglaciar en el Parque Natural de los Collados del Asón (Cantabria). En XII Reunión Nacional de Geomorfología (609-612), Santander, Cantabria: PUbliCan: Ediciones de la Universidad de Cántabria.
978-84-86116-54-5
https://hdl.handle.net/11441/137079
spa
XII Reunión Nacional de Geomorfología (2012), pp. 609-612.
CSO2009-14116-C03-02-GEOG
https://www.segsantander2012.unican.es/
Sántander, España
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
PUbliCan: Ediciones de la Universidad de Cántabria
oai:idus.us.es:11441/1474352024-02-13T22:24:29Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
Impact of the particles impingement on the electronic conductivity of Al doped ZnO films grown by reactive magnetron sputtering
Jullien, M.
Horwat, D.
Endrino, José Luis
Escobar-Galindo, Ramón
Bauer, Ph.
Pierson, J.F.
Universidad de Sevilla. Departamento de Física Aplicada I
Ministerio de Educación y Ciencia (MEC). España
Aluminium doped zinc oxide thin films (4 at.% Al) were deposited by reactive magnetron sputtering technique and characterized by X-ray diffraction (XRD), Rutherford backscattering spectroscopy (RBS), four point probe technique and optical spectrophotometry. High heterogeneities were observed as a function of sample position in the chamber. The chemical analyses did not reveal significant change in composition. Optical investigation showed a strong variation of the density of free carriers, through the Burstein-Moss effect, suggesting that Al dopants were partially inactivated.
2023-06-23T09:54:35Z
2023-06-23T09:54:35Z
2023-06-23T09:54:35Z
2010
info:eu-repo/semantics/conferenceObject
Jullien, M., Horwat, D., Endrino, J.L., Escobar-Galindo, R., Bauer, P. y Pierson, J.F. (2010). Impact of the particles impingement on the electronic conductivity of Al doped ZnO films grown by reactive magnetron sputtering. En Innovations in Thin Film Processing and Characterisation (ITFPC 2009) Nancy, Francia: IOP Science.
1757-899X
https://hdl.handle.net/11441/147435
10.1088/1757-899X/12/1/012006
eng
Innovations in Thin Film Processing and Characterisation (ITFPC 2009) (2010).
CSD2008-00023 (Consolider)
https://iopscience.iop.org/article/10.1088/1757-899X/12/1/012006
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
IOP Science
oai:idus.us.es:11441/342772024-02-14T19:39:41Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
Numerical Simulation of Electric Currents through Insulating Materials
Frutos Rayego, Fabián
Jiménez Marín, Alfonso
Pérez, J. A.
Universidad de Sevilla. Departamento de Física Aplicada I
A numerical simulation of electric currents is carried out
through solid dielectrics from a model based on the
local polarization. A degradation of material was
considered to be produced from one of the electrodes
and we simulated it by admitting modifications in the
chemical structure of the material, which implies an
alteration in the value of the corresponding dipole
moments that characterize the material, as well as the
concentration of the latest. Different simulations are
achieved according to the ratio of the degraded
thickness and the temperature.
2016-02-08T10:40:40Z
2016-02-08T10:40:40Z
2016-02-08T10:40:40Z
1998
info:eu-repo/semantics/conferenceObject
Frutos Rayego, F., Jiménez Marín, A. y Pérez, J.A. (1998). Numerical Simulation of Electric Currents through Insulating Materials. IEEE.
0-7803-4237-2
http://hdl.handle.net/11441/34277
http://dx.doi.org/10.1109/ICSD.1998.709261
https://idus.us.es/xmlui/handle/11441/34277
eng
1998 IEEE International Conference on Conduction and Breakdown in Solid Dielectrics, 206-209, June 22-25,1998, Västeras, Sweden
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=709261
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
IEEE
oai:idus.us.es:11441/430882024-02-17T17:14:05Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
Static and moving breathers in a DNA model with competing short–range and long–range dispersive interactions
Cuevas-Maraver, Jesús
Palmero Acebedo, Faustino
Sánchez-Rey, Bernardo
Archilla, Juan F. R.
Universidad de Sevilla. Departamento de Física Aplicada I
Universidad de Sevilla. FQM280: Fisica no Lineal
So far, all the studies on breathers on DNA have
considered models with either short–range or
long-range interaction. However, none of them have
considered both kinds of interactions.
When both interactions are taken into account, there
appear a great number of phenomena, and some of
them are considered here.
One of these phenomena consists in that short–range
interaction provide the existence of moving breathers,
a fact that does not occur when only long–range
interactions are taken into account.
Other phenomena studied here are the existence,
stability and shape of static breathers and the
properties of moving breathers.
2016-07-04T11:03:25Z
2016-07-04T11:03:25Z
2016-07-04T11:03:25Z
2001
info:eu-repo/semantics/conferenceObject
Cuevas-Maraver, J., Palmero Acebedo, F., Sánchez-Rey, B. y Archilla, J.F.R. (2001). Static and moving breathers in a DNA model with competing short–range and long–range dispersive interactions. Universidad de Sevilla. FQM280: Fisica no Lineal.Recuperado de
http://hdl.handle.net/11441/43088
https://idus.us.es/xmlui/handle/11441/43088
eng
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
oai:idus.us.es:11441/251482017-07-12T07:55:37Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
Vortex solutions of the defocusing discrete nonlinear Schroedinger equation
Cuevas-Maraver, Jesús
James, Guillaume
Kevrekidis, Panayotis G.
Law, Kody J. H.
Universidad de Sevilla. Departamento de Física Aplicada I
Vortices
solitons
stability
stabilization
Schroedinger equation
We consider the existence, stability and dynamical evolution of dark vortex states in the two-dimensional defocusing DNLS equation, a model of interest both to atomic physics and to nonlinear optics. Our considerations are chiefly based on initializing such vortex configurations at the anti-continuum limit of zero coupling between adjacent sites, and continuing them to finite values of the coupling. Discrete defocusing vortices become unstable past a critical coupling strength and, subsequently feature a cascade of alternating stabilization-destabilization windows for any finite lattice.
2015-06-02T10:17:57Z
2015-06-02T10:17:57Z
2015-06-02T10:17:57Z
2009
info:eu-repo/semantics/conferenceObject
0094-243X
http://hdl.handle.net/11441/25148
https://idus.us.es/xmlui/handle/11441/25148
eng
AIP Conference Proceedings, (1168),135-138
http://scitation.aip.org/content/aip/proceeding/aipcp/10.1063/1.3241338
DOI: 10.1063/1.3241338
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
American Institute of Physics
oai:idus.us.es:11441/1471972024-02-14T08:56:32Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
Solar selective coatings based on Carbon:Transition Metal Nanocomposites
Heras, Irene
Guillén Guillén, Elena
Krause, Matthias
Pardo, Ainhoa
Endrino, José Luis
Escobar-Galindo, Ramón
Universidad de Sevilla. Departamento de Física Aplicada I
European Union (UE). H2020
Centro para el Desarrollo Tecnológico Industrial (CDTI)
Solar selective coatings
carbide thin films
high temperature applications
cathodic arc deposition
optical simulation
The design of an efficient and stable solar selective coating for Concentrating Solar Power central receivers requires a complex study of the materials candidates that compose the coating. Carbon-transition metal nanocomposites were studied in this work as absorber materials because they show appropriate optical properties with high absorption in the solar region and low thermal emittance in the infrared. Furthermore metal carbides are thermal and mechanical stable in air at high temperatures. In this work a solar selective coating was grown by a dual source filtered cathodic vacuum arc. The complete stack consists on an infrared reflection layer, an absorber layer of carbon-zirconium carbide nanocomposites and an antireflection layer. The aim of this research is optimize the absorber layer and for that, the metal content was controlled by adjusting the pulse ratio between the two arc sources. The elemental composition was determined by Ion Beam Analysis, X-Ray diffraction measurements show the crystal structure and the optical properties were characterized by spectroscopic ellipsometry measurements. The reflectance spectra of the complete selective coating were simulated with the optical software CODE. Bruggeman effective medium approximation was employed to average the dielectric functions of the two components which constitute the nanocomposite in the absorber layer. The optimized coating exhibited a solar absorptance of 95.41% and thermal emittance of 3.5% for 400ºC. The simulated results were validated with a deposited multilayer selective coating.
2023-06-14T09:40:05Z
2023-06-14T09:40:05Z
2023-06-14T09:40:05Z
2015
info:eu-repo/semantics/conferenceObject
Heras, I., Guillén Guillén, E., Krause, M., Pardo, A., Endrino, J.L. y Escobar-Galindo, R. (2015). Solar selective coatings based on Carbon:Transition Metal Nanocomposites. En SPIE Optics + Photonics for Sustainable Energy California, Estados Unidos: SPIE Digital Library.
9781628417258
0277-786X (impreso)
1996-756X (online)
https://hdl.handle.net/11441/147197
10.1117/12.2189515
eng
SPIE Optics + Photonics for Sustainable Energy (2015).
FRIENDS2
IDI-20130896 (INDESOL)
https://www.spiedigitallibrary.org/conference-proceedings-of-spie/9559/1/Solar-selective-coatings-based-on-carbon-transition-metal-nanocomposites/10.1117/12.2189515.full?SSO=1
Washington, USA
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
SPIE Digital Library
oai:idus.us.es:11441/1370512024-02-14T09:08:00Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
Relleno morfosedimentario y poblamiento humano del estuario de los ríos Tinto y Odiel (Huelva) durante la segunda mitad del Holoceno
Rodríguez Vidal, Joaquín
Abad de los Santos, Manuel
Cáceres Puro, Luis Miguel
González Regalado, María Luz
Clemente, M. J.
Ruiz Muñoz, Francisco
Izquierdo, Tatiana
Toscano, Antonio
Gómez, P.
Campos, J.
Bermejo, J.
Martínez Aguirre, Aránzazu
Universidad de Sevilla. Departamento de Física Aplicada I
Ministerio de Ciencia, Innovación y Universidades (MICINN). España
Junta de Andalucía
Coastal geomorphology
Estuary
Human settlement
Holocene
Huelva
The first human settlements (6000−4000 BP) in the early estuary of the Tinto and Odiel rivers were located in the ancient coastal banks or in the nearby hills. From 4000 years BP onwards, the estuarine sediments started to emerge as sand barriers and chenier plains, prograding towards the mouth. As the littoral strands stabilized morphologically, they are colonized by human settlements in successive periods, the oldest inland (Almendral) and more recent outward (Cascajera). These emerged morphologies were surrounded by muddy tidal flats in the estuary and only the high-energy marine events such as a tsunami or extraordinary storms were able to modify both the landscape and human settlements installed on them. This work also describes the morphodynamicmodel that built the chenier plain of La Cascajera.
2022-09-14T09:19:14Z
2022-09-14T09:19:14Z
2022-09-14T09:19:14Z
2014
info:eu-repo/semantics/conferenceObject
Rodríguez Vidal, J., Abad de los Santos, M., Cáceres Puro, L.M., González Regalado, M.L., Clemente, M.J., Ruiz Muñoz, F.,...,Martínez Aguirre, A. (2014). Relleno morfosedimentario y poblamiento humano del estuario de los ríos Tinto y Odiel (Huelva) durante la segunda mitad del Holoceno. En XIII Reunión Nacional de Geomorfología (604-607), Cáceres, España: Universidad de Extremadura : Sociedad Española de Geomorfología.
978-84-617-1123-9
https://hdl.handle.net/11441/137051
20731163
spa
XIII Reunión Nacional de Geomorfología (2014), pp. 604-607.
CGL2010-15810/BTE
HAR2012- 36008
SEJ-4770
Cáceres, España
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Universidad de Extremadura : Sociedad Española de Geomorfología
oai:idus.us.es:11441/342532024-02-17T17:37:44Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
Space Charge Studies on Mid-voltage Cable by Thermally Stimulated Depolarization Currents in the Melting Temperature Range.
Diego, J.A.
Cañadas, J.C.
Belana, J.
Sellarés, J.
Orrit, J.
Frutos Rayego, Fabián
Universidad de Sevilla. Departamento de Física Aplicada I
In the present work, a XLPE mid-voltage cable
from General Cable CO. has been studied by Thermally
stimulated depolarization currents. Systematic
measurements have been carried out in order to compare
the conductive processes in this cable with previous results.
Depolarization current as a function of thermal
annealing, thermal history, polarizing field and polarizing
time and temperature has been obtained. The results
show the presence of a broad and complex heteropolar
process between 60 and 120°C as expected. Annealing
of the sample at temperatures above SOT develops an homopolar
contribution associated to chemical components
diffused from the cable semiconducting layers into the
XLPE bulk. For annealing times of 60min at 140T and
2 days at 90°C, the homoplar current intensity reaches
a maximum, decreasing and recovering the heteropolar
sign with further annealing. Experiments performed with
different polarizing times and temperatures show as well
the presence of an homopolar contribution, overlapped
to the heteropolar behavior, that increases continuously
with polarizing time. These results indicate that conductive
processes within the XLPE are probably responsible
of homopolar charge injection.
2016-02-08T08:37:25Z
2016-02-08T08:37:25Z
2016-02-08T08:37:25Z
2004
info:eu-repo/semantics/conferenceObject
0-7803-8348-6
http://hdl.handle.net/11441/34253
http://dx.doi.org/10.1109/ICSD.2004.1350337
https://idus.us.es/xmlui/handle/11441/34253
eng
2004 International Conference on Solid Dielectrics (1), 248-251, Toulouse, France, July 5-9, 2004
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1350337
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
IEEE
oai:idus.us.es:11441/1479912023-07-14T11:50:53Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
3-D and 1-D dynamics of slender liquid jets: linear analysis with electric field and accuracy of 1-D models near the breakup
García García, Francisco Javier
Castellanos, Antonio
Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo
Universidad de Sevilla. Departamento de Física Aplicada I
In a previous paper [Phys. Fluids, vol. 6, 2676 (1994)], the authors derived four 1-D models (Lee, Cosserat, averaged, and parabolic models) for slender axisymmetric liquid jets from the Navier-Stokes equations. The error of these 1-D models was calculated for small perturbations, in the absence of electric field. Here, we extend the linear error analysis to both perfectly insulating liquid jets in a tangential electric field and perfectly conducting liquid jets in a radial electric field. The accuracy of these models for studying the breakup, when nonlinear effects are no longer negligible, is also tested in the absence of electric field. A comparison of numerical 3-D solutions with results from 1-D models is made. A formulation of the energy conservation in 1-D models allows identifying and correcting a numerical instability of the averaged model near the breakup. It also explains why the Cosserat model overestimates the breakup time for moderate or large viscosity. Good agreement between 1-D and 3-D numerical results is found.
2023-07-14T11:49:21Z
2023-07-14T11:49:21Z
2023-07-14T11:49:21Z
1999-10
info:eu-repo/semantics/conferenceObject
García García, F.J. y Castellanos, A. (1999). 3-D and 1-D dynamics of slender liquid jets: linear analysis with electric field and accuracy of 1-D models near the breakup. En Annual Report Conference on Electrical Insulation and Dielectric Phenomena (1999) (346-349), Austin, USA: IEEE Xplore.
0-7803-5414-1 (impreso)
https://hdl.handle.net/11441/147991
10.1109/CEIDP.1999.804659
eng
Annual Report Conference on Electrical Insulation and Dielectric Phenomena (1999) (1999), pp. 346-349.
https://ieeexplore.ieee.org/document/804659
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
IEEE Xplore
oai:idus.us.es:11441/1357582024-02-14T09:22:57Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
Numerical analysis for 137CS on seabed sediment including atmospheric deposition near the Fukushima coastal area
Min, Byung-Il
Periáñez Rodríguez, Raúl
Suh, Kyunk-Suk
Universidad de Sevilla. Departamento de Física Aplicada I
Universidad de Sevilla. RNM138: Física Nuclear Aplicada
Numerical simulation
Direct release
Atmospheric deposition
Radionuclides were released into the atmosphere and ocean from the accident at the Fukushima Daiichi
Nuclear Power Plant (NPP) in March 2011. Numerical simulations were performed to evaluate the distribution of 137Cs in the ocean with considering directly release and deposition from the atmosphere. Calculated concentrations of 137Cs in the sea water and seabed are compared with the measured data, and atmospheric transport model has been
also used to calculate the rates of atmospheric deposition on the sea surface. Lots of atmospheric deposition was
occurred on sea surface in northeast direction from Fukushima NPP due to westerly wind and precipitation on March
15-31, 2011. Most modelling for the marine dispersion of 137Cs after Fukushima accident was considered as a
perfectly conservative radionuclide, thus scavenging processes and adsorption on seabed sediments are neglected.
The processes of the non-conservative from the numerical simulations have been well described and the calculated
results are also in agreement with the measured data. The concentrations of 137Cs in seabed sediments were mainly
contributed by the atmospheric deposition and long residence time showed in northeast coastal area off Fukushima
NPP.
2022-07-25T11:21:33Z
2022-07-25T11:21:33Z
2022-07-25T11:21:33Z
2013
info:eu-repo/semantics/conferenceObject
Min, B., Periáñez Rodríguez, R. y Suh, K. (2013). Numerical analysis for 137CS on seabed sediment including atmospheric deposition near the Fukushima coastal area. En HARMO 2013: 15th International Conference on Harmonisation within Atmospheric Dispersion Modelling for Regulatory Purposes, Madrid, España.
https://hdl.handle.net/11441/135758
eng
HARMO 2013: 15th International Conference on Harmonisation within Atmospheric Dispersion Modelling for Regulatory Purposes (2013), pp. 851-855.
https://www.harmo.org/conference.php?id=15
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
oai:idus.us.es:11441/269632024-02-13T20:27:29Zcom_11441_10848com_11441_10802com_11441_10690com_11441_11351com_11441_11290com_11441_11361com_11441_10888com_11441_10898com_11441_11240com_11441_11099col_11441_10851col_11441_11354col_11441_11364col_11441_53666col_11441_10901col_11441_11243
La mentoría en la Escuela Universitaria Politécnica de la Universidad de Sevilla
Ruiz Domínguez, Manuela
Bachiller-Soler, Alfonso
Cordobés Carmona, Felipe
Durán-Barrantes, María de la Montaña
Gómez-Alós, Milagros
Jiménez Jiménez, María Nieves
Lebrón Rueda, Esperanza Angustias
López Vázquez, Jorge Jesús
Miró Amarante, Gloria
Morón Romero, María del Carmen
Romero Rodríguez, Soledad
Sánchez Gómez, Ana Beatriz
Santana Hidalgo, Amalia
Universidad de Sevilla. Departamento de Ingeniería Química
Universidad de Sevilla. Departamento de Física Aplicada I
Universidad de Sevilla. Departamento de Ingeniería Eléctrica
Universidad de Sevilla. Departamento de Matemática Aplicada II
Universidad de Sevilla. Departamento de Métodos de Investigación y Diagnóstico en Educación
Universidad de Sevilla. Departamento de Ingeniería Energética
Mentoría
Espacio Europeo de Educación Superior
Mentoring
European Higher Education Area
Con el fin de integrar a los alumnos de nuevo ingreso, la Escuela Universitaria Politécnica de
la Universidad de Sevilla ha puesto en marcha en el curso 2008-09 un Plan de Acción
Tutorial (EUPAT) basado en una red en la que participan el profesorado tutor, alumnado
mentor y alumnado tutorizado. En el presente trabajo se resumirá el proceso de formación
del alumnado mentor y el trabajo desarrollado por el mismo dentro del Plan de Acción
Tutorial. Así mismo, se analizarán las dificultades encontradas durante el transcurso de su
formación y realización de la labor de mentoría y el nivel de satisfacción alcanzado.
Finalmente, se hará una reflexión sobre las debilidades y los puntos de mejora que se
pueden deducir del desarrollo hasta el momento de esta acción tutorial
In order to integrate new students, the Polytechnic School of the University of Seville has
launched in the year 2008-09 an Tutorial Action Plan (EUPAT) based on a network involving
teachers, mentor students and tutored students. In this paper we resume the formation of
mentor students and work developed by the same within the Tutorial Action Plan. Also,
analyzing the difficulties encountered during the course of their training and carrying out the
work of mentoring and the satisfaction level achieved. Finally, we will reflect on the
weaknesses and areas for improvement that can be deducted from the development until
the time of this action tutorial.
2015-07-18T20:15:10Z
2015-07-18T20:15:10Z
2015-07-18T20:15:10Z
2010-07
info:eu-repo/semantics/conferenceObject
http://hdl.handle.net/11441/26963
https://idus.us.es/xmlui/handle/11441/26963
spa
XVIII Congreso Universitario de Innovación Educativa en las Enseñanzas Técnicas: CUIETT 2010, 12 p.
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Universidad de Cantabria
oai:idus.us.es:11441/1475902024-02-13T20:21:23Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10849col_11441_10851
Biocompatible Silver-containing a-C:H and a-C coatings: A Comparative Study
Endrino, José Luis
Allen, Matthew
Escobar-Galindo, Ramón
Zhang, Hanshen
Anders, André
Albella Martín, José María
Universidad de Sevilla. Departamento de Física Aplicada I
Hydrogenated diamond-like-carbon (a-C:H) and hydrogen-free amorphous carbon (a-C) coatings are known to be biocompatible and have good chemical inertness. For this reason, both of these materials are strong candidates to be used as a matrix that embeds metallic elements with antimicrobial effect. In this comparative study, we have incorporated silver into standard diamond-like carbon (DLC) coatings by plasma ion implantation and deposition (PIII&D) using methane (CH4) plasma and simultaneously depositing Ag from a pulsed cathodic arc source. In addition, we have grown amorphous carbon – silver composite coatings using a dual-cathode pulsed filtered cathodic-arc (FCA) source. The silver atomic content of the deposited samples was analyzed using glow discharge optical spectroscopy (GDOES). In both cases, the arc pulse frequency of the silver cathode was adjusted in order to obtain samples with approximately 5 at.% of Ag. Surface hardness of the deposited films was analyzed using the nanoindentation technique. Cell viability for both a-C:H/Ag and a-C:/Ag samples deposited on 24-well tissue culture plates has been evaluated.
2023-06-30T10:20:05Z
2023-06-30T10:20:05Z
2023-06-30T10:20:05Z
2007-04-18
info:eu-repo/semantics/article
Endrino, J.L., Allen, M., Escobar-Galindo, R., Zhang, H., Anders, A. y Albella Martín, J.M. (2007). Biocompatible Silver-containing a-C:H and a-C coatings: A Comparative Study. MRS Online Proceedings Library, 950. https://doi.org/10.1557/PROC-0950-D08-02.
1946-4274 (online)
https://hdl.handle.net/11441/147590
10.1557/PROC-0950-D08-02
eng
MRS Online Proceedings Library, 950.
https://link.springer.com/article/10.1557/PROC-0950-D08-02
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
SpirngerLink
oai:idus.us.es:11441/1477592024-02-13T20:04:36Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10849col_11441_10851
In situ mechanical, temperature and gas exposure treatments of materials combined with variable energy positron beam techniques
Schut, Henk
Veen, A. van
Rivera, A.
Huis, M.A van
Alba García, A.
Escobar-Galindo, Ramón
Universidad de Sevilla. Departamento de Física Aplicada I
Positron beam
Heat treatment
Permeation
4-Point bending
An overview is given of the extension of the Delft variable energy positron (VEP) beam facility with equipment for in situ heating, cooling, 4-point bending, hydrogen permeation and gas ad- and absorption of bulk materials, surfaces and interfaces.
2023-07-06T09:53:28Z
2023-07-06T09:53:28Z
2023-07-06T09:53:28Z
2002-06-21
info:eu-repo/semantics/article
Schut, H., Veen, A.v., Rivera, A., Huis, .A.v., Alba García, A. y Escobar-Galindo, R. (2002). In situ mechanical, temperature and gas exposure treatments of materials combined with variable energy positron beam techniques. Applied Surface Science, 194 (1-4), 239-244. https://doi.org/10.1016/S0169-4332(02)00124-1.
0169-4332 (Impreso)
1873-5584 (online)
https://hdl.handle.net/11441/147759
10.1016/S0169-4332(02)00124-1
eng
Applied Surface Science, 194 (1-4), 239-244.
https://www.sciencedirect.com/science/article/pii/S0169433202001241
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
ScienceDirect
oai:idus.us.es:11441/430912024-02-12T21:44:03Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
Breather collisions: A survey of recent results
Cuevas-Maraver, Jesús
Universidad de Sevilla. Departamento de Física Aplicada I
Universidad de Sevilla. FQM280: Fisica no Lineal
We present some results on breather collisions in DNLS lattices, with special focus on systems with saturable nonlinearity. We also review some other works concerning to collisons in FPU and Klein-Gordon lattices, proposing future challenges.
2016-07-04T11:20:35Z
2016-07-04T11:20:35Z
2016-07-04T11:20:35Z
2005
info:eu-repo/semantics/conferenceObject
Cuevas-Maraver, J. (2005). Breather collisions: A survey of recent results. Universidad de Sevilla. FQM280: Fisica no Lineal.Recuperado de
http://hdl.handle.net/11441/43091
https://idus.us.es/xmlui/handle/11441/43091
eng
NLDD05 = Nonlinear Double Day 2005 : Nonlinear excitations: theory and experiments (2005),
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
oai:idus.us.es:11441/795712024-02-14T13:59:01Zcom_11441_10848com_11441_10802com_11441_10690com_11441_10898col_11441_25187col_11441_25343col_11441_10851
Book of abstracts: NoLineal 2016, International Conference on Nonlinear Mathematics and Physics
Palmero Acebedo, Faustino
Carmona Centeno, Victoriano
Casado Pascual, Jesús
Cuevas-Maraver, Jesús
Fernández Sánchez, Fernando
García Medina, Elisabeth
Lemos, M. Carmen
Quintero, Niurka R.
Sánchez-Rey, Bernardo
Archilla, Juan F. R.
Universidad de Sevilla. Departamento de Física Aplicada I
Universidad de Sevilla. Departamento de Matemática Aplicada II (ETSI)
Nonlinear Mathematics
Nonlinear Physics
Nonlinear Biology
Nonlinear optics
Nonlinear science
2018-10-22T09:06:36Z
2018-10-22T09:06:36Z
2018-10-22T09:06:36Z
2016-06-07
info:eu-repo/semantics/book
Book of abstracts: NoLineal 2016, International Conference on Nonlinear Mathematics and Physics. Sevilla, June 7-10, 2016. Compiled by J.F.R. Archilla, Sevilla, 2016.
978-84-09-05654-5
https://hdl.handle.net/11441/79571
eng
Sevilla
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
NoLineal 2016
Juan F.R. Archilla
oai:idus.us.es:11441/430832024-02-14T09:18:03Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
Ratchet effect in solids: Defect transport driven by biharmonic forces
Cuevas-Maraver, Jesús
Sánchez-Rey, Bernardo
Universidad de Sevilla. Departamento de Física Aplicada I
Universidad de Sevilla. FQM280: Fisica no Lineal
Ministerio de Educación y Ciencia (MEC). España
Interstitials and vacancies, in one-dimensional lattices, are
point defects that can be modelled by means of kinks or antikinks in a
discrete Frenkel-Kontorova model, with a sine-Gordon on-site potential.
The properties of kinks and antikinks are the same if a harmonic interaction
potential is considered. The ratchet properties of these defects in
the above mentioned context has been studied by Zolotaryuk and Salerno
when the system is driven by a biharmonic field. The properties of these
solutions are strongly altered when an anharmonic interaction potential
is introduced in the model, as the Peierls-Nabarro barrier is higher for
antikinks than for kinks. The aim of this poster is to show the effects of
the anharmoniciy of the interaction potential in the properties of kinks
and antikinks focusing in the assymetry between the properties of these
two species of topological solitons
2016-07-04T10:38:20Z
2016-07-04T10:38:20Z
2016-07-04T10:38:20Z
2007
info:eu-repo/semantics/conferenceObject
Cuevas-Maraver, J. y Sánchez-Rey, B. (2007). Ratchet effect in solids: Defect transport driven by biharmonic forces. Universidad de Sevilla. FQM280: Fisica no Lineal.Recuperado de
http://hdl.handle.net/11441/43083
https://idus.us.es/xmlui/handle/11441/43083
eng
FIS2006-27277-E
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
oai:idus.us.es:11441/328452024-02-12T21:59:02Zcom_11441_11180com_11441_11099com_11441_10690com_11441_10848com_11441_10802col_11441_11183col_11441_10851
Taller de electricidad estática
Criado García-Legaz, Ana María
Venero Goñi, Concepción
Morón Romero, María del Carmen
Criado Vega, Amelia
Martínez Gobantes, Luis Ignacio
Sánchez Gómez, Carlos Roque
Universidad de Sevilla. Departamento de Didáctica de las Ciencias Experimentales y Sociales
Universidad de Sevilla. Departamento de Física Aplicada I
2016-01-19T12:49:31Z
2016-01-19T12:49:31Z
2016-01-19T12:49:31Z
1993
info:eu-repo/semantics/conferenceObject
Criado García-Legaz, A.M., Venero Goñi, C., Morón Romero, M.d.C., Criado Vega, A., Martínez Gobantes, L.I. y Sánchez Gómez, C.R. (1993). Taller de electricidad estática. Universidad de Extremadura, Escuela Universitaria de Magisterio de Cáceres.
http://hdl.handle.net/11441/32845
https://idus.us.es/xmlui/handle/11441/32845
spa
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Universidad de Extremadura, Escuela Universitaria de Magisterio de Cáceres
oai:idus.us.es:11441/1382312024-02-17T17:34:00Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
Using oceanography to control and forecast nuclear accidents and other passive particles problems
Toscano Jiménez, Manuel
Abril Hernández, José María
García-Tenorio García-Balmaseda, Rafael
Universidad de Sevilla. Departamento de Física Aplicada I
Universidad de Sevilla. Departamento de Física Aplicada II
Universidad de Sevilla. Departamento de Física Aplicada III
Universidad de Sevilla. RNM-138: Física Nuclear Aplicada
This article is the last improved version of a previously published model (Toscano-Jimenez and Garcia-Tenorio, 2004) for the transport of the nuclear contamination and other passive particles in the ocean. Two interesting advances have been developed during last two years for the author's PhD thesis to be finished in the next months: (a) a suspended particulate matter (SPM) submodel, including erosion, transport and sedimentation. (b) A new advection-diffusion approach with numerical and computational improvements: finite elements (FE), finite differences (FD) and Monte Carlo (MC) methods have been compared and calibrated. The Baltic Sea has been elected as the validation scenario of the model and the radioisotope 137 Cs is the radiotracer to be analysed. This scenario was the most contaminated ecosystem out of the Soviet Union due to the Chernobyl accident which occurred at the end of April 1986, and the elected radiotracer 137 Cs was the main long-lived radioisotope emitted to the environment. However, an important aim of this model is its potential usefulness in other oceanic scenarios affected by a nuclear disaster in the future. It could be an interesting tool to predict and minimize the ecological and economical impacts of future accidents. This model can also be extended easily to non-nuclear contamination problems such as: oil accidents, nutrients dynamics and other biological problems.
2022-10-21T11:47:17Z
2022-10-21T11:47:17Z
2022-10-21T11:47:17Z
2007
info:eu-repo/semantics/conferenceObject
Toscano Jiménez, M., Abril Hernández, J.M. y García Tenorio, R. (2007). Using oceanography to control and forecast nuclear accidents and other passive particles problems. En Oceans 2007 - Europe Aberdeen, Scotland: IEEE Computer Society.
978-1-4244-0634-0
https://hdl.handle.net/11441/138231
10.1109/OCEANSE.2007.4302286
eng
Oceans 2007 - Europe (2007).
https://ieeexplore.ieee.org/document/4302286
New York, USA
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
IEEE Computer Society
oai:idus.us.es:11441/328372024-02-14T20:37:51Zcom_11441_11180com_11441_11099com_11441_10690com_11441_10848com_11441_10802col_11441_11183col_11441_10851
Investigación internivelar sobre algunas cuestiones de Dinámica. Ideas de los alumnos y su evolución
Venero Goñi, Concepción
Criado García-Legaz, Ana María
Sánchez Gómez, Carlos Roque
Universidad de Sevilla. Departamento de Didáctica de las Ciencias Experimentales y Sociales
Universidad de Sevilla. Departamento de Física Aplicada I
2016-01-19T12:23:08Z
2016-01-19T12:23:08Z
2016-01-19T12:23:08Z
1995
info:eu-repo/semantics/conferenceObject
Venero Goñi, C., Criado García-Legaz, A.M. y Sánchez Gómez, C.R. (1995). Investigación internivelar sobre algunas cuestiones de Dinámica. Ideas de los alumnos y su evolución. Universidad de Alcalá de Henares, Servicio de Publicaciones.
84-8138-006-7
http://hdl.handle.net/11441/32837
https://idus.us.es/xmlui/handle/11441/32837
spa
XIII Encuentros de Didáctica de las Ciencias experimentales (pp.287-293). Guadalajara : Universidad de Alcalá de Henares, Escuela Universitaria de Formación del Profesorado de Guadalajara
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Universidad de Alcalá de Henares, Servicio de Publicaciones
oai:idus.us.es:11441/342812024-02-14T20:14:52Zcom_11441_11291com_11441_11290com_11441_10690com_11441_10848com_11441_10802col_11441_11294col_11441_10851
Function generator to study the dielectric breakdown in thin film structures
Jiménez Moreno, Gabriel
Frutos Rayego, Fabián
González Elipe, A. R.
Amaya Rodríguez, Claudio Antonio
Sevillano Ramos, José Luis
Acedo García, Miguel
Jiménez Marín, Alfonso
Díaz del Río, Fernando
Universidad de Sevilla. Departamento de Física Aplicada I
Universidad de Sevilla. Departamento de Arquitectura y Tecnología de Computadores
2016-02-08T11:02:59Z
2016-02-08T11:02:59Z
2016-02-08T11:02:59Z
2001
info:eu-repo/semantics/conferenceObject
Jiménez Moreno, G., Frutos Rayego, F., González Elipe, A.R., Amaya Rodríguez, C.A., Sevillano Ramos, J.L., Acedo García, M.,...,Díaz del Rio, F. (2001). Function generator to study the dielectric breakdown in thin film structures. IEEE.
0-7803-6352-3
http://hdl.handle.net/11441/34281
http://dx.doi.org/10.1109/ICSD.2001.955636
https://idus.us.es/xmlui/handle/11441/34281
eng
2001 IEEE 7th International Conference on Solid Dielectrics, 311-314, June 25-29,2001, Eindhoven, the Netherlands
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=955636
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
IEEE
oai:idus.us.es:11441/1474312024-02-15T07:42:07Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
Beneficial silver: antibacterial nanocomposite Ag-DLC coating to reduce osteolysis of orthopaedic implants
Endrino, José Luis
Sánchez-López, José Carlos
Escobar-Galindo, Ramón
Horwat, D.
Anders, A.
Universidad de Sevilla. Departamento de Física Aplicada I
Ministerio de Ciencia e Innovación (MICIN). España
Silver-containing diamond-like-carbon (DLC) is a promising material for biomedical implants due to its excellent combination of antibacterial and mechanical properties. In this work, a dual-cathode pulsed filtered cathodic arc source containing silver and graphite rods was employed in order to obtain DLC samples with various silver contents. Chemical composition of the samples was analyzed by acquiring their compositional depth-profiles using radio-frequency Glow Discharge Optical Emission Spectroscopy (rf-GDOES), while the microstructural properties were analyzed by X-ray diffraction and Raman spectroscopy. Tribological studies carried out against UHMWPE balls in fetal bovine serum indicate that the presence of silver in DLC could be beneficial to reduce the wear of the polymeric surfaces.
2023-06-23T08:53:19Z
2023-06-23T08:53:19Z
2023-06-23T08:53:19Z
2010-06-24
info:eu-repo/semantics/conferenceObject
Endrino, J.L., Sánchez-López, J.C., Escobar-Galindo, R., Horwat, D. y Anders, A. (2010). Beneficial silver: antibacterial nanocomposite Ag-DLC coating to reduce osteolysis of orthopaedic implants. En Surface Modifications and Functionalization of Materials for Biomedical Applications Zaragoza, España: IOP Science.
1742-6588
1742-6596
https://hdl.handle.net/11441/147431
10.1088/1742-6596/252/1/012005
eng
Surface Modifications and Functionalization of Materials for Biomedical Applications (2010).
CSD 2008-0023 (FUNCOAT)
FIS2009-12964-C05-04
https://iopscience.iop.org/article/10.1088/1742-6596/252/1/012005
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
IOP Science
oai:idus.us.es:11441/1475922024-02-13T09:03:12Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10849col_11441_10851
Compositional depth profiling analysis of thin and ultrathin multilayer coatings by radio-frequency glow discharge optical emission spectroscopy
Escobar-Galindo, Ramón
Forniés, E.
Albella Martín, José María
Universidad de Sevilla. Departamento de Física Aplicada I
Multilayer
Hard coatings
GDOES
Depth resolution
Interface
In most of the industrial applications of multilayer coatings, a detailed knowledge of the interlayer structure and the interfaces is needed. In comparison with standard surface analysis techniques (SIMS, XPS, AES, etc.), depth profiling by radio-frequency glow discharge optical emission spectroscopy (rf-GDOES) provides rapid information, with a high depth resolution, about the multilayer composition. In rf-GDOES analysis, the depth resolution mainly depends on the roughening induced during the sputtering, the resulting crater geometry and sputtering of material re-deposited on the crater wall. In this work, we have isolated the contribution of these effects in the depth resolution of metal and metal nitride multilayer coatings.
The importance of these effects has been firstly tested on multilayer stacks consisting of three alternating metal or nitride layers, typically of 500 nm each. The profiles of materials with high sputtering rate become less affected than material with low sputtering rate due to lower mixing of the layers. The contribution of these factors increased during the analysis of thinner multilayer coatings (∼ 100 nm). After reversing the order of the layer elements, completely different profiles were measured, confirming the role of the differences in sputtering rate and crater shape.
Finally, in order to evaluate the depth resolution function of the GDOES technique, ultrathin metal chromium and aluminium nitride layers of 5 nm have been buried at different depths in a metal titanium and chromium nitride matrix, respectively, up to a thickness of 2 μm. The markers were properly resolved both near the surface and deeply embedded in the matrix, demonstrating the excellent capabilities of the GDOES technique to detect very thin films in the nanometric range.
2023-06-30T10:32:26Z
2023-06-30T10:32:26Z
2023-06-30T10:32:26Z
2006-06-20
info:eu-repo/semantics/article
Escobar-Galindo, R., Forniés, E. y Albella Martín, J.M. (2006). Compositional depth profiling analysis of thin and ultrathin multilayer coatings by radio-frequency glow discharge optical emission spectroscopy. Surface and Coatings Technology, 200 (22-23), 6185-6189. https://doi.org/10.1016/j.surfcoat.2005.11.064.
0257-8972 (impreso)
1879-3347 (online)
https://hdl.handle.net/11441/147592
10.1016/j.surfcoat.2005.11.064
eng
Surface and Coatings Technology, 200 (22-23), 6185-6189.
https://www.sciencedirect.com/science/article/pii/S0257897205012752
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
ScienceDirect
oai:idus.us.es:11441/250872024-02-15T07:29:51Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
Effect of breather existence on reconstructive transformations in mica muscovite
Archilla, Juan F. R.
Cuevas-Maraver, Jesús
Romero Romero, Francisco
Universidad de Sevilla. Departamento de Física Aplicada I
Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear
Ministerio de Educación y Ciencia (MEC). España
Discrete breathers
Intrinsic localized modes
Reconstructive transformations
Reconstructive transformations of layered silicates as mica muscovite take place at much lower temperatures than expected. A possible explanation is the existence of breathers within the potassium layer. Numerical analysis of a model shows the existence of many different types of breathers with different energies and existence ranges which spectrum coincides approximately with a statistical theory for them.
2015-05-29T09:30:05Z
2015-05-29T09:30:05Z
2015-05-29T09:30:05Z
2008
info:eu-repo/semantics/conferenceObject
0094-243X
1551-7616
http://hdl.handle.net/11441/25087
https://idus.us.es/xmlui/handle/11441/25087
eng
AIP Conference Proceedings, 982(1), 788-791
doi:10.1063/1.2897904
http://scitation.aip.org/content/aip/proceeding/aipcp/10.1063/1.2897904
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
oai:idus.us.es:11441/234972024-02-17T17:56:08Zcom_11441_10848com_11441_10802com_11441_10690com_11441_10853com_11441_10863col_11441_10851col_11441_10856col_11441_10866
Mecanismos de transferencia de radionucleidos en el medio ambiente
Abril Hernández, José María
Periáñez Rodríguez, Raúl
García León, Manuel
García-Tenorio García-Balmaseda, Rafael
Manjón Collado, Guillermo
Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear
Universidad de Sevilla. Departamento de Física Aplicada II
Universidad de Sevilla. Departamento de Física Aplicada I
2015-03-16T13:58:46Z
2015-03-16T13:58:46Z
2015-03-16T13:58:46Z
2004
info:eu-repo/semantics/conferenceObject
1134-380X
http://hdl.handle.net/11441/23497
https://idus.us.es/xmlui/handle/11441/23497
spa
Vas Jornadas de Investigación y Desarrollo Tecnológico en Gestión de Residuos Radiactivos, Vol. 1, 2003, 32-42
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Empresa Nacional de Residuos Radioactivos, ENRESA
oai:idus.us.es:11441/1476802024-02-13T22:25:22Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10849col_11441_10851
Depth-selective 2D-ACAR studies on low-k dielectric thin films
Eijt, S.W.H.
Veen, A. van
Falub, Claudiu V.
Escobar-Galindo, Ramón
Schut, Henk
Mijnarends, P.E.
Theije, Fremke de
Balkenende, A.R.
Universidad de Sevilla. Departamento de Física Aplicada I
Non-thermal positronium
2D-ACAR
Mesoporous film
Effusion
Percolation
Depth profiling
Depth-selective 2D-ACAR investigations on ordered mesoporous silica thin films provide direct evidence that para-positronium (p-Ps) created deep in the films can escape through a network of interconnected pores. The depth dependence of the escape fraction and of the average kinetic energy of non-thermally excited p-Ps is in quantitative agreement with Monte Carlo modeling, assuming classical collisions of p-Ps with the pore walls. The model provides insight in the shape of the angular correlation distributions and their sensitivity to, e.g., the effective wall mass Ms and pore dimensions.
2023-07-04T11:25:12Z
2023-07-04T11:25:12Z
2023-07-04T11:25:12Z
2003
info:eu-repo/semantics/article
Eijt, S.W.H., Veen, A.v., Falub, C.V., Escobar-Galindo, R., Schut, H., Mijnarends, P.E.,...,Balkenende, .R. (2003). Depth-selective 2D-ACAR studies on low-k dielectric thin films. Radiation Physics and Chemistry, 68 (3-4), 357-362. https://doi.org/10.1016/S0969-806X(03)00184-1.
0969-806X (impreso)
1879-0895 (online)
https://hdl.handle.net/11441/147680
10.1016/S0969-806X(03)00184-1
eng
Radiation Physics and Chemistry, 68 (3-4), 357-362.
https://www.sciencedirect.com/science/article/pii/S0969806X03001841
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
ScienceDirect
oai:idus.us.es:11441/342572024-02-15T07:33:51Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
A Study on the Dependence of Water Tree Permittivity with Time
Radu, I.
Acedo García, Miguel
Notingher, P.
Frutos Rayego, Fabián
Filippini, Jean César
Universidad de Sevilla. Departamento de Física Aplicada I
During the growth of water trees in the insulation of a
cable the distribution of the electric field is modified
because of the local change of the dielectric properties
of the material. It results a local enhancement of the
electric field which could increase the risk of
breakdown. The key factor is the permittivity of the
water tree and the aim of the work is to determine its
possible values and, particularly, the law of its increase
with time during the of the trees. The paper
presents permittivity measurements in uniform field in MV and power
2016-02-08T09:11:44Z
2016-02-08T09:11:44Z
2016-02-08T09:11:44Z
1996
info:eu-repo/semantics/conferenceObject
0-7803-3580-5
http://hdl.handle.net/11441/34257
http://dx.doi.org/10.1109/CEIDP.1996.564620
https://idus.us.es/xmlui/handle/11441/34257
eng
1996 IEEE Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, (2), 772-775, San Francisco, October 20-23,1996
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=564620
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
IEEE
oai:idus.us.es:11441/1293022024-02-15T07:37:43Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
Una metodología investigativa para enseñar Magnetostática
Álvarez Molina, Rafael
Universidad de Sevilla. Departamento de Física Aplicada I
Universidad de Sevilla. FQM196: Nanotecnología en Superficies y Plasma
Física II
Grado en Ingeniería de Diseño Industrial y Desarrollo del Producto
Docencia universitaria
Experimentación docente universitaria
En este trabajo se describe la aplicación de un ciclo de mejora en el
aula en la asignatura Física II de primer curso del Grado en Ingeniería
del Diseño Industrial y Desarrollo del Producto. El modelo metodológico propuesto es de tipo investigativo, donde se plantea una pregunta inicial a los alumnos y éstos proponen hipótesis que deberán
testear. Las actividades diseñadas incluyen discusión en grupos, fichas
de actividades o visionado de experimentos. La comparación de cuestionarios realizados antes y después del ciclo refleja una mejora importante en los niveles de conocimiento de los alumnos respecto a los
contenidos del tema. En una encuesta final, los alumnos declararon
unánimemente preferir esta metodología a la tradicional.
2022-01-27T10:00:42Z
2022-01-27T10:00:42Z
2022-01-27T10:00:42Z
2020
info:eu-repo/semantics/conferenceObject
Álvarez Molina, R. (2020). Una metodología investigativa para enseñar Magnetostática. En Jornadas de Formación e Innovación Docente del Profesorado. Jornadas FIDOP 2019 (42-64), Sevilla (España): Universidad de Sevilla.
978-84-472-2191-2
https://hdl.handle.net/11441/129302
10.12795/9788447221912.001
spa
Jornadas de Formación e Innovación Docente del Profesorado. Jornadas FIDOP 2019 (2020), pp. 42-64.
https://editorial.us.es/es/detalle-libro/720118/ciclos-de-mejora-en-el-aula-ano-2019
Sevilla, España
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Universidad de Sevilla
oai:idus.us.es:11441/343052024-02-14T11:14:46Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
A new approach to the modelling of the conduction processes in a water tree degraded LDPE
Frutos Rayego, Fabián
Acedo García, Miguel
Radu, I.
Jiménez Marín, Alfonso
Pérez Gómez, J. A.
Filippini, Jean César
Jadraque Alonso, Antonio
Universidad de Sevilla. Departamento de Física Aplicada I
2016-02-08T11:54:35Z
2016-02-08T11:54:35Z
2016-02-08T11:54:35Z
2001
info:eu-repo/semantics/conferenceObject
Frutos Rayego, F., Acedo García, M., Radu, I., Jiménez Marín, A., Pérez Gómez, J.A., Filippini, J.C. y Jadraque Alonso, A. (2001). A new approach to the modelling of the conduction processes in a water tree degraded LDPE. IEEE.
0-7803-6352-3
http://hdl.handle.net/11441/34305
http://dx.doi.org/10.1109/ICSD.2001.955577
https://idus.us.es/xmlui/handle/11441/34305
eng
2001 IEEE 7th International Conference on Solid Dielectrics, 167-17, June 25-29,2001, Eindhoven, the Netherlands
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=955577
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
IEEE
oai:idus.us.es:11441/497272024-02-17T17:29:19Zcom_11441_10848com_11441_10802com_11441_10690com_11441_10858col_11441_10851col_11441_10861
Nuevo sistema portátil de micro-fluorescencia de rayos X basado en óptica de policapilares para aplicaciones en Patrimonio Cultural
Laclavetine, Kilian
Ager Vázquez, Francisco José
Gómez-Tubio, Blanca María
Križnar, Anabelle
Moreno-Suárez, Ana Isabel
Ortega-Feliú, Inés
Respaldiza Galisteo, Miguel Ángel
Scrivano, Simona
García León, Manuel
Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear
Universidad de Sevilla. Departamento de Física Aplicada I
Universidad de Sevilla. Departamento de Física Aplicada III
Universidad de Sevilla. RNM138: Física Nuclear Aplicada
Ministerio de Ciencia e Innovación (MICIN). España
Junta de Andalucía
2016-12-05T11:31:45Z
2016-12-05T11:31:45Z
2016-12-05T11:31:45Z
2011-01
info:eu-repo/semantics/conferenceObject
Ager Vázquez, F.J., Gómez Tubio, B.M., Križnar, A., Laclavetine, K., Moreno Suarez, A.I., Ortega Feliú, I.,...,Scrivano, S. (2011). Nuevo sistema portátil de micro-fluorescencia de rayos X basado en óptica de policapilares para aplicaciones en Patrimonio Cultural. En El Patrimonio Cultural y Natural como motor de desarrollo: Investigación e Innovación (2037-2043), Jaén: Universidad Internacional de Andalucía.
9788479932251
http://hdl.handle.net/11441/49727
10.13140/RG.2.1.1507.7845
https://idus.us.es/xmlui/handle/11441/49727
spa
HAR2009-07449
P09-HUM-4544
https://goo.gl/dEmqt3
Sevilla
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Universidad Internacional de Andalucía
oai:idus.us.es:11441/250742024-02-17T16:25:51Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
Interaction of moving breathers with an impurity
Cuevas-Maraver, Jesús
Palmero Acebedo, Faustino
Archilla, Juan F. R.
Romero Romero, Francisco
Universidad de Sevilla. Departamento de Física Aplicada I
Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear
We analyze the influence of an impurity in the evolution of moving discrete
breathers in a Klein–Gordon chain with non-weak nonlinearity. Three different
behaviours can be observed when moving breathers interact with the impurity:
they pass through the impurity continuing their direction of movement; they are
reflected by the impurity; they are trapped by the impurity, giving rise to chaotic
breathers. Resonance with a breather centred at the impurity site is conjectured
to be a necessary condition for the appearance of the trapping phenomenon.
2015-05-28T11:28:18Z
2015-05-28T11:28:18Z
2015-05-28T11:28:18Z
2003
info:eu-repo/semantics/conferenceObject
978-981-238-296-2
978-981-4486-51-4
http://hdl.handle.net/11441/25074
https://idus.us.es/xmlui/handle/11441/25074
eng
L. Vázquez, R. S. MacKay & M. P. Zorzano (Eds.), Localization and Energy Transfer in Nonlinear Systems. Proceedings of the Third Conference San Lorenzo de El Escorial Madrid, Spain, 17 – 21 June 2002 (pp. 256-259). Singapore: World Scientific
http://www.worldscientific.com/worldscibooks/10.1142/5214
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
World Scientific
oai:idus.us.es:11441/367082024-02-17T16:21:09Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
Charge transport in a nonlinear, three-dimensional DNA model with disorder
Archilla, Juan F. R.
Hennig, Dirk
Agarwal, J.
Universidad de Sevilla. Departamento de Física Aplicada I
We study the transport of charge due to polarons in a model of DNA which takes
in account its 3D structure and the coupling of the electron wave function with
the H–bond distortions and the twist motions of the base pairs. Perturbations
of the ground states lead to moving polarons which travel long distances. The
influence of parametric and structural disorder, due to the impact of the ambient,
is considered, showing that the moving polarons survive to a certain degree of
disorder. Comparison of the linear and tail analysis and the numerical results
makes possible to obtain further information on the moving polaron properties.
2016-03-02T06:40:04Z
2016-03-02T06:40:04Z
2016-03-02T06:40:04Z
2003
info:eu-repo/semantics/conferenceObject
981-238-296-8
http://hdl.handle.net/11441/36708
https://idus.us.es/xmlui/handle/11441/36708
eng
L. Vázquez, R. S. MacKay & M. P. Zorzano (Eds.), Localization and Energy Transfer in Nonlinear Systems. Proceedings of the Third Conference San Lorenzo de El Escorial Madrid, Spain, 17 – 21 June 2002 (pp. 153-160). Singapore: World Scientific
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
WorldScientific
oai:idus.us.es:11441/350792024-02-13T19:57:23Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10850col_11441_10851
The origin of defects induced in ultra-pure germanium by Electron Beam Deposition
Coelho, Sergio M.M.
Archilla, Juan F. R.
Danie Auret, F.
Nel, Jackie M.
Universidad de Sevilla. Departamento de Física Aplicada I
electron beam deposition
germanium
semiconductor
defects
DLTS
The creation of point defects in the crystal lattices of various semiconductors
by subthreshold events has been reported on by a number of groups. These
observations have been made in great detail using sensitive electrical techniques but
there is still much that needs to be clarified. Experiments using Ge and Si were
performed that demonstrate that energetic particles, the products of collisions in the
electron beam, were responsible for the majority of electron-beam deposition (EBD)
induced defects in a two-step energy transfer process. Lowering the number of collisions
of these energetic particles with the semiconductor during metal deposition
was accomplished using a combination of static shields and superior vacuum resulting
in devices with defect concentrations lower than 1011 cm−3
, the measurement
limit of our deep level transient spectroscopy (DLTS) system. High energy electrons
and photons that samples are typically exposed to were not influenced by the shields
as most of these particles originate at the metal target thus eliminating these particles
as possible damage causing agents. It remains unclear how packets of energy
that can sometimes be as small of 2 eV travel up to a µm into the material while
still retaining enough energy, that is, in the order of 1 eV, to cause changes in the
crystal. The manipulation of this defect causing phenomenon may hold the key to
developing defect free material for future applications.
2016-02-18T09:04:30Z
2016-02-18T09:04:30Z
2016-02-18T09:04:30Z
2015
info:eu-repo/semantics/bookPart
978-3-319-21044-5
http://hdl.handle.net/11441/35079
http://dx.doi.org/10.1007/978-3-319-21045-2_15
https://idus.us.es/xmlui/handle/11441/35079
eng
Quodons in Mica: Nonlinear Localized Travelling Excitations in Crystals, Springer, 2015, Part V, 363-380
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Springer
oai:idus.us.es:11441/1477382024-02-13T22:04:45Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10849col_11441_10851
Nano-porosity in silica reinforced methyltrimethoxysilane coatings studied by positron beam analysis
Escobar-Galindo, Ramón
Veen, A. van
Schut, Henk
Falub, Claudiu V.
Balkenende, A.R.
With, Govert de
Hosson, J.Th.M. de
Universidad de Sevilla. Departamento de Física Aplicada I
A. Ceramic-matrix composites
A. Porosity
B. Mechanical properties
Positron beam analysis
E. Sol–gel methods
The porosity in particle reinforced sol-gel coatings has been studied. Silica particles (Ludox-TM40) are introduced into methyl silicate coatings to increase the hardness, the elastic modulus and the fracture toughness. The methyl silicate has a relatively low density (about 1.2 g/cm2), while the silica particles are known to be porous. However, the porosity of the silica particles is not accurately known. For model calculations on mechanical properties like the E-modulus this porosity should be known. Positron Beam Analysis (PBA), using the Doppler Broadening (DB) and 2D-Angular Correlation of Annihilation Radiation (2D-ACAR) techniques, was therefore performed for analysis of the porosity. Samples with different weight fractions (0, 20 and 63 wt.%) of silica particles of typically 40 nm in diameter and treated at different curing temperatures (623 and 723 K) were measured. With increasing filler content we observed a decrease in the positron annihilation S-parameter and a broadening of the para-positronium (p-Ps) fraction. By neglecting positron diffusion we can separate porosity in the matrix from that in the particles. This assumption is valid as long as the expected positron diffusion length is short compared to the size of the filler particles, as in the present case. A more detailed description takes into account the local environment of the filler particles affecting their adhesion to the matrix. It is concluded that the density of the silica particles is about 1.4 g/cm2.
2023-07-05T10:52:44Z
2023-07-05T10:52:44Z
2023-07-05T10:52:44Z
2003-06
info:eu-repo/semantics/article
Escobar-Galindo, R., Veen, A.v., Schut, H., Falub, C.V., Balkenende, .R., With, G.d. y Hosson, J.T.M.d. (2003). Nano-porosity in silica reinforced methyltrimethoxysilane coatings studied by positron beam analysis. Composites Science and Technology, 63 (8), 1133-1139. https://doi.org/10.1016/S0266-3538(03)00034-4.
0266-3538 (impreso)
1879-1050 (online)
https://hdl.handle.net/11441/147738
10.1016/S0266-3538(03)00034-4
eng
Composites Science and Technology, 63 (8), 1133-1139.
https://www.sciencedirect.com/science/article/pii/S0266353803000344
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
ScienceDirect
oai:idus.us.es:11441/430892024-02-14T11:40:51Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
Localized oscillations in nonlinear hamiltonian Klein-Gordon lattices. Breathers and Anderson modes
Cuevas-Maraver, Jesús
Palmero Acebedo, Faustino
Archilla, Juan F. R.
Romero Romero, Francisco
Muriel, M.C.
Universidad de Sevilla. Departamento de Física Aplicada I
Universidad de Sevilla. FQM280: Fisica no Lineal
There are two different sources of localization in
discrete lattices:
• Anderson modes in disordered harmonic
lattices [1]
• Discrete breathers in homogeneous nonlinear
lattices [2]
2016-07-04T11:05:58Z
2016-07-04T11:05:58Z
2016-07-04T11:05:58Z
2002
info:eu-repo/semantics/conferenceObject
Cuevas-Maraver, J., Palmero Acebedo, F., Archilla, J.F.R., Romero Romero, F. y Muriel, M.C. (2002). Localized oscillations in nonlinear hamiltonian Klein-Gordon lattices. Breathers and Anderson modes. Universidad de Sevilla. FQM280: Fisica no Lineal.Recuperado de
http://hdl.handle.net/11441/43089
https://idus.us.es/xmlui/handle/11441/43089
eng
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
oai:idus.us.es:11441/1293032024-02-14T11:44:35Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
Experiencias en la aplicación de un ciclo de mejora en el aula de la asignatura de Termodinámica
Delgado Sánchez, José María
Universidad de Sevilla. Departamento de Física Aplicada I
Universidad de Sevilla. TEP122: Termodinámica y Energías Renovables
Experimentación docente universitaria
Docencia universitaria
Aprendizaje Basado en Problemas (ABP)
Termodinámica
Grado en Ingeniería de las Tecnologías Industriales
University teaching innovation
University teaching
Learning based on problems
Thermodynamics
Industrial Engineering Bachelor
En este artículo se comparten las experiencias de aplicar un Ciclo de Mejora en el Aula ciclo(CIMA) durante la asignatura de Termodinámica en el Grado de Ingeniería de las Tecnologías Industriales de la Universidad de Sevilla. El objetivo ha sido invertir la metodología aplicada para centrar la atención en los alumnos, generando situaciones que les involucren en la clase. Se trata así de evitar la “clase magistral” y que los alumnos consigan un mayor aprendizaje y a largo plazo (Beard y Hartley, 1984). Se ha planteado un nuevo modelo metodológico aplicando un aprendizaje basado en problemas.
A session for the improvement in teaching has been achieved to implement
new methodologies in the Thermodinamics subject, which
is included in the Bachelor Degree for Industrial Engineering at the
University of Seville. The main objective of this project has consisted
in flipping the traditional “master class” to transfer the main role of
the classroom to the students. It is expected that this alternative teaching
methodology will let students get a better understanding of the
concepts in the long-term (Beard and Hartley, 1984). More precisely,
the proposed model is focussed on the learning procedure based on
problems.
2022-01-27T10:09:01Z
2022-01-27T10:09:01Z
2022-01-27T10:09:01Z
2020
info:eu-repo/semantics/conferenceObject
Delgado Sánchez, J.M. (2020). Experiencias en la aplicación de un ciclo de mejora en el aula de la asignatura de Termodinámica. En Jornadas de Formación e Innovación Docente del Profesorado. Jornadas FIDOP (153-176), Sevilla (España): Universidad de Sevilla.
978-84-472-2191-2
https://hdl.handle.net/11441/129303
10.12795/9788447221912.006
spa
Jornadas de Formación e Innovación Docente del Profesorado. Jornadas FIDOP (2020), pp. 153-176.
https://editorial.us.es/es/detalle-libro/720118/ciclos-de-mejora-en-el-aula-ano-2019
Sevilla, España
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Universidad de Sevilla
oai:idus.us.es:11441/367152024-02-14T13:26:03Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
Discrete breathers collisions in nonlinear Schrödinger and Klein-Gordon lattices
Cuevas-Maraver, Jesús
Álvarez Chillida, María Azucena
Romero Romero, Francisco
Archilla, Juan F. R.
Universidad de Sevilla. Departamento de Física Aplicada I
Discrete breathers
collisions
NLS lattices
Klein-Gordon lattices
Collisions between moving localized modes (moving breathers) in non-
integrable lattices present a rich outcome. In this paper, some features of the
interaction of moving breathers in Discrete Nonlinear Schrödinger and Klein-
Gordon lattices, together with some plausible explanations, are exposed.
2016-03-02T09:19:11Z
2016-03-02T09:19:11Z
2016-03-02T09:19:11Z
2008
info:eu-repo/semantics/conferenceObject
978-972-8688-56-1
http://hdl.handle.net/11441/36715
https://idus.us.es/xmlui/handle/11441/36715
eng
Proceedings of the 2nd Conference on Nonlinear Science and Complexity Porto, Portugal, July 28-31, 2008
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
oai:idus.us.es:11441/1370762024-02-14T20:31:44Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
MIS 5 sea-level markers and regional uplifting in the Strait of Gibraltar (North of Morocco)
Abad, M.
Rodríguez Vidal, Joaquín
Aboumaria, K.
Zaghloul, M. N.
Cáceres, L. M.
Ruiz, F.
Martínez Aguirre, Aránzazu
Chamorro, S.
Universidad de Sevilla. Departamento de Física Aplicada I
Ministerio de Ciencia, Innovación y Universidades (MICINN). España
Marine terrace
Terraza mariina
Notch
MIS 5
Strait of Gibraltar
Estrecho de Gibraltar
Morocco
Marruecos
This study investigates the morpho-sedimentary evidence of two highstands registered and
dated during MIS 5 stage by U-series dating in the North of Morocco (Strait of Gibraltar). Bioerosive
notch and mixed siliciclastic and carbonate deposits, high energy beaches with algal bioherms, were
formed in coastal environments during MIS 5a. A sea-level altitude of +10 m asl was inferred for this
substage. The record of MIS 5e-2 substage is less complete, consisting in upper foreshore and storm
deposits located some meters above the sea-level (+13-15 m asl). A tectonic uplift rate of ~0.1 mm/yr has
been estimated for the last 130 ky. This data is consistent with models of coastal uplifts elaborated for the
Gibraltar Strait.
Este trabajo analiza las evidencias morfosedimentarias de dos altas paradas del nivel marino
datadas en el MIS 5 mediante series de U en el Norte de Marruecos. Durante el MIS 5a se formaron
socaves bioerosivos (notches) y facies de playas de alta energía constituidas por depósitos mixtos
siliciclástico-carbonatados. Una altura de 10 m snm ha sido estimada para esta etapa. El registro del
MIS 5e-2 es menos completo, constituidos por depósitos de foreshore y de tormenta formados varios
metros sobre el nivel del mar (+13-15 m snm). Se ha deducido una tasa de elevación tectónica de 0.1
mm/año para los últimos 130 ka. Estos datos son consistentes con los modelos previos de levantamiento
tectónico elaborados para el Estrecho de Gibraltar.
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2022-09-15T09:00:18Z
2012
info:eu-repo/semantics/conferenceObject
Abad, M., Rodríguez Vidal, J., Aboumaria, K., Zaghloul, M.N., Cáceres, L.M., Ruiz, F.,...,Chamorro, S. (2012). MIS 5 sea-level markers and regional uplifting in the Strait of Gibraltar (North of Morocco). En VIII Congreso Geológico de España (1611-1614), Oviedo, España: Sociedad Geológica de España.
1576-5172
https://hdl.handle.net/11441/137076
20430239
eng
VIII Congreso Geológico de España (2012), pp. 1611-1614.
CGL2010-15810/BTE
https://sociedadgeologica.org/publicaciones/geotemas/geo-temas-13/
Salamanca, España
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Sociedad Geológica de España
oai:idus.us.es:11441/430872024-02-15T07:38:19Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
El efecto ratchet en la partícula relativista
Álvarez Nodarse, Renato
Cuesta, José A.
Quintero, Niurka R.
Universidad de Sevilla. Departamento de Física Aplicada I
2016-07-04T11:01:40Z
2016-07-04T11:01:40Z
2016-07-04T11:01:40Z
2012
info:eu-repo/semantics/conferenceObject
Alvarez-Nodarse, R., Cuesta, J.A. y Quintero, N.R. (2012). El efecto ratchet en la partícula relativista. Recuperado de
http://hdl.handle.net/11441/43087
https://idus.us.es/xmlui/handle/11441/43087
spa
http://www.gefenol.es/FisEs/12/media/DocumentosPDF/Libro_de_abstracts_FisEs_12.pdf
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
oai:idus.us.es:11441/772872024-02-14T13:42:27Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
Software de dominio público: una alternativa de coste cero para la docencia
Pascual Granged, Arturo José
Díaz Delgado, José Eduardo
Fernández Mateos, Rafael
Portilla Fernández, José María de La
Universidad de Sevilla. Departamento de Física Aplicada I
Universidad de Sevilla. Departamento de Arquitectura y Tecnología de Computadores
Universidad de Sevilla. RNM364: Med_soil Research Group
En la actualidad, la necesidad de la utilización de los ordenadores como soporte fundamental para la docencia se ha hecho evidente. Ello se debe tanto a la implantación de estas máquinas en entorno empresarial corno a la familiarización de los alumnos con los ordenadores. Según la última encuesta del CIS el 38% de los hogares existe un ordenador, y el número sigue aumentando. Además, con la implantación de los nuevos planes de estudio aparece la Informática como materia fundamental en la formación de los titulados en las Escuelas Técnicas.
Otro aspecto que debemos contemplar es un problema estructural de las universidades españolas: la limitación presupuestaria, en algunos casos, grave. Esta situación nos hace plantearnos la búsqueda de soluciones de bajo coste para dotar a los centros universitarios de un soporte informático para la docencia.
Puesto que el recorte en el gasto de infraestructuras hardware no redunda en beneficio para la labor docente, hemos de plantear la solución por la vía de la utilización de software de bajo o nulo coste. Para ello contamos con el denominado software de dominio público. En él nos encontramos con dos grandes grupos de aplicaciones: aplicaciones shareware y aplicaciones freeware.
Las aplicaciones shareware se basan en un software que durante un tiempo más o menos amplio es gratuito, para realizar pruebas y estudiar su utilidad. Pasado dicho tiempo, el autor espera recibir una
pequeña compensación económica por su trabajo. Las cantidades a satisfacer, en este caso, suelen ser prácticamente simbólicas y, por supuesto, distan mucho de los precios del software comercial.
Las aplicaciones freeware son software completamente gratuito. A diferencia de las anteriores, están disponibles sin límite de tiempo en su utilización sin necesidad de satisfacer cantidad alguna al autor de la aplicación.
Por último, hemos de hacer referencia a otro grupo de aplicaciones que son gratuitas para su uso académico, aunque sí tenga que satisfacerse una cantidad económica para usos comerciales o empresariales.
El software de dominio público abarca diversos campos de la docencia e incluso campos de desarrollo profesional. De hecho, gran cantidad de aplicaciones de software público llegan a convertirse en aplicaciones comerciales, aunque su uso para uso educativo permanezca de manera gratuita.
En esta ponencia vamos a plantear diversas alternativas de apoyo a la labor docente mediante el uso de software de libre difusión.
2018-07-16T11:01:56Z
2018-07-16T11:01:56Z
2018-07-16T11:01:56Z
1998
info:eu-repo/semantics/conferenceObject
Pascual Granged, A.J., Díaz Delgado, J.E. y Fernández Mateos, R. (1998). Software de dominio público: una alternativa de coste cero para la docencia. En VI Congreso universitario de innovación educativa en las enseñanzas técnicas (315-320), Las Palmas de Gran Canaria (España): Universidad de Las Palmas de Gran Canaria, Servicio de publicaciones y producción documental.
84-89728-64-X
https://hdl.handle.net/11441/77287
spa
VI Congreso universitario de innovación educativa en las enseñanzas técnicas (1998), p 315-320
Las Palmas de Gran Canaria
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Universidad de Las Palmas de Gran Canaria, Servicio de publicaciones y producción documental
oai:idus.us.es:11441/430902016-11-29T12:30:43Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
La corriente promedio en los ”rocking ratchets”
Quintero, Niurka R.
Álvarez Nodarse, Renato
Cuesta, José A.
Universidad de Sevilla. Departamento de Física Aplicada I
2016-07-04T11:08:24Z
2016-07-04T11:08:24Z
2016-07-04T11:08:24Z
2012
info:eu-repo/semantics/conferenceObject
Quintero, N.R., Alvarez-Nodarse, R. y Cuesta, J.A. (2012). La corriente promedio en los ”rocking ratchets”. Recuperado de
http://hdl.handle.net/11441/43090
https://idus.us.es/xmlui/handle/11441/43090
spa
http://www.gefenol.es/FisEs/12/media/DocumentosPDF/Libro_de_abstracts_FisEs_12.pdf
Palma de Mallorca
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
oai:idus.us.es:11441/253122024-02-14T20:14:43Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
Energy localization and transport in two-dimensional electrical lattices
English, Lars Q.
Palmero Acebedo, Faustino
Stormes, Joseph F.
Cuevas-Maraver, Jesús
Carretero-González, Ricardo
Kevrekidis, Panayotis G.
Universidad de Sevilla. Departamento de Física Aplicada I
Intrinsic localized modes (ILMs) have
been generated and characterized in two-dimensional
nonlinear electrical lattices which were driven by a
spatially-uniform voltage signal. These ILMs were
found to be either stationary or mobile, depending on
the details of the lattice unit-cell, as had already been
reported in one-dimensional lattices; however, the mo-
tion of these ILMs is qualitatively di erent in that it
lacks a consistent direction. Furthermore, the hop-
ping speed seems to be somewhat reduced in two di-
mensions due to an enhanced Peierls-Nabarro (PN)-
barrier. We investigate both square and honeycomb
lattices composed of 6
x
6 elements. These direct ob-
servations were further supported by numerical simu-
lations based on realistic models of circuit components.
The numerical study moreover allowed for an analysis
of ILM dynamics and pattern formation for larger lat-
tice sizes.
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2015-06-05T11:13:23Z
2015-06-05T11:13:23Z
2013
info:eu-repo/semantics/conferenceObject
http://hdl.handle.net/11441/25312
https://idus.us.es/xmlui/handle/11441/25312
eng
International Symposium on Nonlinear Theory and its Applications (2013. Santa Fe, USA)
http://www-lab23.kuee.kyoto-u.ac.jp/nolta2013/
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
NOLTA
oai:idus.us.es:11441/949032024-02-13T21:57:38Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
Kinks in Coulomb’s chains
Archilla, Juan F. R.
Kosevich, Yuriy A.
Russell, Mike
Universidad de Sevilla. Departamento de Física Aplicada I
Universidad de Sevilla. FQM280: Física no Lineal
Chains of identical ions, for which the dominant interaction is the electrostatic repulsion, appear in layered
silicates. The ions can move almost from site to site. The chains do not explode because the surrounding
media has a net negative charge which screens the Coulomb’s repulsion and become attractive when the ions
separate two much. Moreover there is a border effect which keeps the ions within the crystal.
We have been able to obtain moving supersonic kinks that keep their shape and cross nicely one with each
other and can travel over the surrounding sea of phonons. Their energies can be very different, from the order
of eVs to hundreds of them. Therefore they can influence many different processes within silicates.
2020-04-03T19:04:13Z
2020-04-03T19:04:13Z
2020-04-03T19:04:13Z
2012
info:eu-repo/semantics/conferenceObject
Archilla, J.F.R., Kosevich, Y.A. y Russell, M. (2012). Kinks in Coulomb’s chains. En 2nd Conference on Localized Excitations in Nonlinear Complex Systems (LENCOS'12) (1-17), Sevilla (España): Universidad de Sevilla.
https://hdl.handle.net/11441/94903
eng
2nd Conference on Localized Excitations in Nonlinear Complex Systems (LENCOS'12) (2012), p 1-17
FIS2008-04848
http://congreso.us.es/lencos/
Sevilla
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Universidad de Sevilla
oai:idus.us.es:11441/698982024-02-13T09:05:10Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
El riesgo de hipoacusia inducida por música laboral. Estudio de caso en la Real Orquesta Sinfónica de Sevilla (ROSS)
Laguna Millán, María José
Morón Romero, María del Carmen
Universidad de Sevilla. Departamento de Física Aplicada I
Universidad de Sevilla. RNM159: Grupo TAR-Bioingeniería
Músicos
Orquesta Sinfónica
Ruido
Riesgo higiénico
Musicians
Symphony Orchestra
Noise
Hygienic risk
Se centra el trabajo en el estudio higiénico, valorando y mensurando la existencia de riesgo y el nivel de exposición a ruido por los profesionales de orquesta mediante estudio de caso con mediciones higiénicas de ruido en la Real Orquesta Sinfónica de Sevilla (ROSS) en La ópera Tosca de Puccini y el cuarto movimiento de la Novena Sinfonía de Beethoven.
El conocimiento de las condiciones de trabajo desde la prevención de riesgos laborales es un conocimiento evaluador para poder intervenir y esta ha sido la pauta a seguir.
The work focuses on hygienic study, valuing and measurand the existence of risk and the noise level exposured to noise by professionals of Orchestra through case study with hygienic measurements of noise in the Real Orquesta Sinfónica de Sevilla (ROSS) in the opera Tosca of Puccini and the fourth movement of Beethoven's Ninth Symphony.
The knowledge of conditions of work from the prevention of occupational risks is an evaluator knowledge to be able to intervene and this has been the pattern to follow.
2018-02-02T09:05:01Z
2018-02-02T09:05:01Z
2018-02-02T09:05:01Z
2016
info:eu-repo/semantics/conferenceObject
Laguna Millán, M.J. y Morón Romero, M.d.C. (2016). El riesgo de hipoacusia inducida por música laboral. Estudio de caso en la Real Orquesta Sinfónica de Sevilla (ROSS). En III Jornadas de Investigación y Postgrado (133-142), Sevilla: Área de Innovación y Desarrollo.
978-84-946089-7-1
https://hdl.handle.net/11441/69898
10.177993/IngyTec.2016.16
spa
https://www.3ciencias.com/libros/libro/iii-jornada-investigacion-postgrado-libro-actas/
Alcoy (Alicante)
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Área de Innovación y Desarrollo
oai:idus.us.es:11441/889022024-02-17T17:19:22Zcom_11441_10848com_11441_10802com_11441_10690com_11441_10888col_11441_10851col_11441_53666
Aprovechamiento energético de residuos industriales de alta carga orgánica mediante codigestión anaerobia
Benito Mora, Carlos
Alonso Contreras, Antonio José
Garvi Higueras, María Dolores
Morón Romero, María del Carmen
Lebrato Martínez, Julián
Universidad de Sevilla. Departamento de Ingeniería Química
Universidad de Sevilla. Departamento de Física Aplicada I
Universidad de Sevilla. RNM159: Grupo TAR-Bioingeniería
Codigestión anaerobia
Rendimiento de metano
Biochemical Methane Potential
Adaptación de consorcios microbianos
El desarrollo de nueva y más estricta legislación en materia de tratamiento de residuos, hace necesaria la utilización y mejora de tecnologías no convencionales que eviten los problemas ambientales asociados a las técnicas de gestión tradicionales, tales como la deposición en vertedero. Los residuos agroindustriales presentan, en la mayoría de los casos, una elevada carga orgánica, provocando impactos ambientales.
En el presente estudio se valora el aprovechamiento energético de los residuos de lactosuero, aguas glicerosas y lixiviado de vertedero, como cosustratos en el proceso de codigestión anaerobia, pudiendo ser esta, una alternativa de tratamiento, gestión y valorización de estos residuos y con el biogás producido, generar energía eléctrica, siendo otra fuente de energía renovable. El comportamiento de cada uno de los sustratos de trabajo han sido estudiados mediante ensayos de Biochemical Methane Potential, siendo una herramienta factible para el estudio de la biodegradabilidad o viabilidad del sustrato, adaptabilidad de los consorcios microbianos y la especialización de dichos consorcios a cada uno de los residuos de estudio en codigestión anaerobia. Se emplea el fango mixto como sustrato de referencia debido a su viabilidad en los procesos de digestión anaerobia.
2019-09-03T11:20:44Z
2019-09-03T11:20:44Z
2019-09-03T11:20:44Z
2018
info:eu-repo/semantics/conferenceObject
Benito Mora, C., Alonso Contreras, A.J., Garvi Higueras, M.D., Morón Romero, M.d.C. y Lebrato Martínez, J. (2018). Aprovechamiento energético de residuos industriales de alta carga orgánica mediante codigestión anaerobia. En IV Jornada de Investigación y Postgrado en la EPS (73-85), Sevilla (España): 3ciencias. Editorial Área de Innovación y Desarrollo,S.L..
978-84-948577-6-8
https://hdl.handle.net/11441/88902
10.17993/IngyTec.2018.34
spa
IV Jornada de Investigación y Postgrado en la EPS (2018), pp. 73-85.
Proyecto: 2017/00000962
https://www.3ciencias.com/wp-content/uploads/2018/05/Jornada-de-investigación-y-postgrado.pdf
Alicante
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
3ciencias. Editorial Área de Innovación y Desarrollo,S.L.
oai:idus.us.es:11441/1479792024-02-14T13:55:44Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
Dynamics and deformation of a drop in a DC electric field
Khayari, Abdelmounim
Pérez Izquierdo, Alberto Tomás
García García, Francisco Javier
Castellanos, Antonio
Universidad de Sevilla. Departamento de Física Aplicada I
Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo
Ministerio de Ciencia Y Tecnología (MCYT). España
We consider a single conducting drop in suspension in a poorly conducting liquid between two horizontal electrodes. When a DC field is applied to the
electrodes, the drop charges and rises within the'liquid, then falls down as its charge leaks away, due to the finite elechic relaxation time of the liquid. The drop keepsbouncing as long as the high voltage applied remains above a minimum threshold. We focus our study on the dynamics and the deformation of a water drop before the lift-off and during its motion. Electrodes of different materials are used in order to illustrate the role of interfacial energy between the electrode and the water.
2023-07-14T10:18:50Z
2023-07-14T10:18:50Z
2023-07-14T10:18:50Z
2003-10
info:eu-repo/semantics/conferenceObject
Khayari, A., Pérez Izquierdo, A.T., García García, F.J. y Castellanos, A. (2003). Dynamics and deformation of a drop in a DC electric field. En Annual Report Conference on Electrical Insulation and Dielectric Phenomena (2003) (682-685), Albuquerque, USA: IEEE Xplore.
0-7803-7910-1 (impreso)
https://hdl.handle.net/11441/147979
10.1109/CEIDP.2003.1254946
eng
Annual Report Conference on Electrical Insulation and Dielectric Phenomena (2003) (2003), pp. 682-685.
BFM2000-1056
https://ieeexplore.ieee.org/document/1254946/authors#authors
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
IEEE Xplore
oai:idus.us.es:11441/1479892024-02-14T08:47:52Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
Perpendicular-field EHD instabilities visualized in a tip-plane configuration
Vega, F.
Pérez Izquierdo, Alberto Tomás
García García, Francisco Javier
Castellanos, Antonio
Universidad de Sevilla. Departamento de Física Aplicada I
Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo
Ministerio de Ciencia y Tecnología (MCYT). España
EHD interfacial instabilities can be induced by corona discharge from a tip electrode onto a liquid-air interface. The corona current charges the liquid surface and instabilities may appear depending on the applied voltage and the liquid properties. We present a technique to detect the onset of instability based on image processing. To establish the instability threshold we apply an edge-detection algorithm to images of the liquid surface acquired through a videa camera.
2023-07-14T11:30:48Z
2023-07-14T11:30:48Z
2023-07-14T11:30:48Z
2002-10
info:eu-repo/semantics/conferenceObject
Vega, F., Pérez Izquierdo, A.T., García García, F.J. y Castellanos, A. (2002). Perpendicular-field EHD instabilities visualized in a tip-plane configuration. En Annual Report Conference on Electrical Insulation and Dielectric Phenomena (216-219), Cancún, México: IEEE Xplore.
0-7803-7502-5
https://hdl.handle.net/11441/147989
10.1109/CEIDP.2002.1048774
eng
Annual Report Conference on Electrical Insulation and Dielectric Phenomena (2002), pp. 216-219.
BFM2000- 1056
https://ieeexplore.ieee.org/document/1048774/authors
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
IEEE Xplore
oai:idus.us.es:11441/1477332024-02-17T17:11:09Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10849col_11441_10851
Systematic positron study of hydrophilicity of the internal pore surface in ordered low-k silica thin films
Escobar-Galindo, Ramón
Veen, A. van
Schut, Henk
Eijt, S.W.H.
Falub, Claudiu V.
Balkenende, A.R.
Theije, Fremke de
Universidad de Sevilla. Departamento de Física Aplicada I
Positrons
Annihilation
Silicon oxide
Surface composition
Percolation phenomena
Non-destructive Doppler Broadening (DB), Positronium fraction (f-Ps) and Two Dimensional Angular Correlation of Annihilation Radiation (2D-ACAR), Positron Beam Analysis (PBA) techniques have been used to study well-ordered mesoporous silica thin films with hydrophobic or hydrophilic character. The DB results, characterized by the S and W parameters, are related to both the open volume and the chemical environment at the positron annihilation site. The f-Ps and 2D-ACAR techniques are very sensitive probes to determine the type of porosity (open or closed in terms of positronium escape) in thin film materials. Samples with varying pore size (well-controlled at 2, 3 and 4.5 nm, or incorporating microporosity in the silica), pore fraction (from 4 to 57%) and extent of hydrophilicity have been studied. In the hydrophilic samples with small pore size the S-parameter increases with the porosity while the Ps-fraction remains almost unchanged. Increasing the pore size leads to smaller changes in S with increasing porosity. However, an abrupt change in the Ps-fraction is observed for samples with porosity higher than 45%, indicating a positronium percolation threshold for samples with 2D ordering structure. On the other hand, for hydrophobic samples with high porosity (57%) the highest S parameter and Ps-fraction were obtained for the three pore sizes studied. 2D-ACAR is used to determine the fraction and velocity of Ps escaping from some of the latter samples exhibiting positronium percolation. The relationship between these observations and porosity will be discussed in terms of branching of the positron annihilation channels inside the mesoporous films.
2023-07-05T10:15:44Z
2023-07-05T10:15:44Z
2023-07-05T10:15:44Z
2003-09-15
info:eu-repo/semantics/article
Escobar-Galindo, R., Veen, A.v., Schut, H., Eijt, S.W.H., Falub, C.V., Balkenende, .R. y Theije, F.K.d. (2003). Systematic positron study of hydrophilicity of the internal pore surface in ordered low-k silica thin films. Materials Science and Engineering: B, 102 (1-3), 403-408. https://doi.org/10.1016/S0921-5107(03)00121-1.
0921-5107 (impreso)
1873-4944 (online)
https://hdl.handle.net/11441/147733
10.1016/S0921-5107(03)00121-1
eng
Materials Science and Engineering: B, 102 (1-3), 403-408.
https://www.sciencedirect.com/science/article/pii/S0921510703001211
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
ScienceDirect
oai:idus.us.es:11441/786512024-02-14T20:25:33Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
Estudio del comportamiento de una red CAN basada en el 82C200 de Phillips y en el 82527 de Intel
Pascual Granged, Arturo José
Sevillano Ramos, José Luis
Jiménez Moreno, Gabriel
Civit Balcells, Antón
Martínez Iturbe, Abelardo
Universidad de Sevilla. Departamento de Física Aplicada I
Universidad de Sevilla. Departamento de Arquitectura y Tecnología de Computadores
Universidad de Sevilla. RNM364: Med_soil Research Group
Universidad de Sevilla. TEP108: Robótica y Tecnología de Computadores
Comisión Interministerial de Ciencia y Tecnología (CICYT). España
El protocolo CAN nace como protocolo de red de procesadores en el campo de la automoción. Hoy en día, este protocolo se esta introduciendo dentro de otros campos de aplicación. El objetivo de este articulo consiste en poner de manifiesto la dependencia respecto de la arquitectura del chip de comunicaciones en cuanto a la ocupación del canal por estación para distintos valores de la carga. La intención de los autores consiste en crear una base solida para la evaluación de esta red con vistas a su utilización no solo en el campo de la automoción sino para cualquier aplicación en tiempo real que conlleve la utilización de una red de procesadores.
2018-09-19T20:13:28Z
2018-09-19T20:13:28Z
2018-09-19T20:13:28Z
1996
info:eu-repo/semantics/conferenceObject
Pascual Granged, A.J., Sevillano Ramos, J.L., Jiménez Moreno, G. y Civit-Balcells, A. (1996). Estudio del comportamiento de una red CAN basada en el 82C200 de Phillips y en el 82527 de Intel. En Seminario Anual de Automática y Electrónica Industrial. SAAEI'96 (855-859), Zaragoza (España): Universidad de Zaragoza.
84-8499-566-6
https://hdl.handle.net/11441/78651
spa
TAP 93-0443
Zaragoza
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Universidad de Zaragoza
oai:idus.us.es:11441/1379842024-02-13T22:21:06Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
A Lagrangian Transport Model Applied to two Different Brackish Systems: the Baltic Sea and the Guadalquivir River
Toscano Jiménez, Manuel
Abril Hernández, José María
Universidad de Sevilla. Departamento de Física Aplicada I
Universidad de Sevilla. Departamento de Física Aplicada III
Universidad de Sevilla. RNM-138: Física Nuclear Aplicada
the nuclear contamination and other passive particles in the
ocean. As a consequence of the Chernobyl accident (April, 26th,
1986), the radioactive plume drift over many countries in Europe,
and after some days, the Baltic Sea became the most
contaminated ecosystem beyond the Soviet Union. Our
Dispersion Model has been validated in this system in order to be
useful in other oceanic scenarios affected by radioactive fallout in
the future. These investigations could be an interesting tool to
predict and minimize the ecological and economical impacts of
future accidents and can also be extended to non-nuclear
contamination problems such as: oil accidents, chemical
contamination, nutrients dynamics and other ecological problems.
A new application devoted to the Guadalquivir River has
been implemented with the methods used and validated for the
Baltic Sea. This transport model is a first step for future
applications to passive particles problems such as nutrients,
chemical contamination, metals, suspended sediments, etc., or
other active parts like salt and fresh water. A deeper knowledge
on the Guadalquivir river estuary is being demanding for many
socioeconomic and ecological applications in the future.
2022-10-18T06:43:51Z
2022-10-18T06:43:51Z
2022-10-18T06:43:51Z
2011
info:eu-repo/semantics/conferenceObject
Toscano Jiménez, M. y Abril Hernández, J.M. (2011). A Lagrangian Transport Model Applied to two Different Brackish Systems: the Baltic Sea and the Guadalquivir River. En OCEANS 2011 IEEE (1-8), Santander, España: IEEE Computer Society.
978-1-4577-0086-6
https://hdl.handle.net/11441/137984
10.1109/Oceans-Spain.2011.6003622
eng
OCEANS 2011 IEEE (2011), pp. 1-8.
https://ieeexplore.ieee.org/document/6003622
New York, USA
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
IEEE Computer Society
oai:idus.us.es:11441/1472322024-02-13T19:54:52Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
Comprehensive environmental testing of optical properties in thin films
Heras, Irene
Guillén Guillén, Elena
Krause, Matthias
Wenisch, Robert
Escobar-Galindo, Ramón
Endrino, José Luis
Universidad de Sevilla. Departamento de Física Aplicada I
Thin films
optical constants
cluster tool
high temperature applications
thermal degradation
real time spectroscopic ellipsometry
ion beam analysis
Raman spectroscopy
Environmental characterization of optical and structural properties of thin films continues to be a challenging task. To understand the failure
mechanism in high temperature thin film applications, it is crucial to understand how material properties change with temperature. An accurate
knowledge of the variation of the dielectric function of thin films and its relation to compositional and microstructural changes could help to
prevent failures. This article presents an environmental in-situ characterization methodology that combines the study of the optical constants in
an environmental chamber by spectroscopic ellipsometry, with compositional depth profile analysis using ion beam analysis techniques and a
structure analysis by Raman spectroscopy. The main novelty of this methodology is that all analytical techniques are carried out sequentially in
a multi-chamber cluster tool without sample exposure to undefined atmospheres. Carbon-titanium metal thin film had been studied following
the described characterization methodology
2023-06-15T08:40:34Z
2023-06-15T08:40:34Z
2023-06-15T08:40:34Z
2014
info:eu-repo/semantics/conferenceObject
Heras, I., Guillén Guillén, E., Krause, M., Wenisch, R., Escobar-Galindo, R. y Endrino, J.L. (2014). Comprehensive environmental testing of optical properties in thin films. En 3rd International Conference in Through-life Engineering Services (TESConf 2014) (271-276), ScienceDirect.
2212-8271 (online)
https://hdl.handle.net/11441/147232
10.1016/j.procir.2014.06.153
eng
3rd International Conference in Through-life Engineering Services (TESConf 2014) (2014), pp. 271-276.
https://www.sciencedirect.com/science/article/pii/S2212827114008087
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
ScienceDirect
oai:idus.us.es:11441/234992024-02-13T22:24:11Zcom_11441_10848com_11441_10802com_11441_10690com_11441_10863col_11441_10851col_11441_10866
A method for the measurement of 99Tc by Quadrupole ICP-MS in dry fallout and sea grass samples
García León, Manuel
Mas Balbuena, José Luis
Bolívar Raya, Juan Pedro
Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear
Universidad de Sevilla. Departamento de Física Aplicada I
Technetium
ICP-MS
sea grass
fallout
A method for the detection of "Tc by ICP-MS in environmental samples is proposed and
explained in detail. This method combines the capabilities of anion exchange chromatographic
TEVA-Spec' resin with prior isotope concentration using solvent extraction to Tn'butylphosphate.
The problem that the excess of Mo in the solution analyzed by ICP-MS causes in the instrumental
response at m/z ratio 99 is described in detail, and the proposed solution takes the form of the referred
radlochemical method. The realistic limits of detection of this technique (bearing in mind the
particular methodology here applied) are in the range of 20-70 mBq/kg when treating mass amounts in
the range of 20-125 g dry weight. A few environmental samples proceeding from a region unaffected
by any closer nuclear industry (the Southwest of Spain) are analyzed for checking '9Tc concentration.
2015-03-17T09:49:57Z
2015-03-17T09:49:57Z
2015-03-17T09:49:57Z
2003
info:eu-repo/semantics/conferenceObject
García León, M., Mas Balbuena, J.L. y Bolívar Raya, J.P. (2003). A method for the measurement of 99Tc by Quadrupole ICP-MS in dry fallout and sea grass samples.
http://hdl.handle.net/11441/23499
https://idus.us.es/xmlui/handle/11441/23499
eng
.
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
oai:idus.us.es:11441/527182024-02-15T07:56:45Zcom_11441_11291com_11441_11290com_11441_10690com_11441_10848com_11441_10802col_11441_11294col_11441_10851
VRML: El laboratorio virtual como alternativa económica al laboratorio real
Pascual Granged, Arturo José
Bernal Bermejo, José Angel
Fernández Mateos, Rafael
Díaz Delgado, José Eduardo
Universidad de Sevilla. Departamento de Física Aplicada I
Universidad de Sevilla. Departamento de Arquitectura y Tecnología de Computadores
La formación de un Ingeniero Técnico pasa ineludiblemente por dos fases de estudio: El conocimiento teórico y el desarrollo de actividades prácticas. Si bien el conocimiento teórico queda en mayor o peor medida cubierto por las clases de “pizarra”, la problemática asociada al desarrollo de actividades prácticas es bien distinta. En esta ponencia planteamos una solución que se ha visto favorecida por el desarrollo de los ordenadores y los resultados obtenidos en el campo de la realidad virtual.
2017-01-25T07:38:03Z
2017-01-25T07:38:03Z
2017-01-25T07:38:03Z
1999
info:eu-repo/semantics/conferenceObject
Pascual Granged, A.J., Bernal Bermejo, J.A., Fernández Mateos, R. y Díaz Delgado, J.E. (1999). VRML: El laboratorio virtual como alternativa económica al laboratorio real. En VII Congreso Universitario de Innovación Educativa en las Enseñanzas Técnicas (416-430), Huelva: Escuela Politécnica Superior de la Rábida.
84-931043-1-0
http://hdl.handle.net/11441/52718
spa
Huelva
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Escuela Politécnica Superior de la Rábida
oai:idus.us.es:11441/342552024-02-13T19:58:24Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
The Cylindrical Capacitive Model for Water Treeing Degradation in Extruded HV Cables
Acedo García, Miguel
Frutos Rayego, Fabián
Torres Subiela, Miguel
Filippini, Jean César
Universidad de Sevilla. Departamento de Física Aplicada I
2016-02-08T08:57:25Z
2016-02-08T08:57:25Z
2016-02-08T08:57:25Z
1995
info:eu-repo/semantics/conferenceObject
0-7803-2040-9
http://hdl.handle.net/11441/34255
http://dx.doi.org/10.1109/ICSD.1995.523069
https://idus.us.es/xmlui/handle/11441/34255
eng
Proceedings of the 1995 IEEE 5th International Conference on Conduction and Breakdown in Solid Dielectrics, 661-665, 1995. ICSD'95
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=523069
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
IEEE
oai:idus.us.es:11441/430922024-02-17T17:32:26Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
¿Puede apararecer el efecto ratchet en sistemas simétricos?
Quintero, Niurka R.
Zamora-Sillero, Elías
Mertens, Franz G.
Universidad de Sevilla. Departamento de Física Aplicada I
2016-07-04T11:26:52Z
2016-07-04T11:26:52Z
2016-07-04T11:26:52Z
2006
info:eu-repo/semantics/conferenceObject
Quintero, N.R., Zamora-Sillero, E. y Mertens, F.G. (2006). ¿Puede apararecer el efecto ratchet en sistemas simétricos?. Recuperado de
http://hdl.handle.net/11441/43092
https://idus.us.es/xmlui/handle/11441/43092
spa
XIV Congreso de Física Estadística (2006), p 1-2
http://www.gefenol.es/FisEs/06/POSTERPDF/fises_quintero.pdf
Grananda
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
oai:idus.us.es:11441/343112024-02-17T17:23:40Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
The characterization of a LDPE affected by different levels of water tree degradation using absorption current measurements
Acedo García, Miguel
Radu, I.
Frutos Rayego, Fabián
Filippini, Jean César
Jiménez Marín, Alfonso
Pérez Gómez, J. A.
Jadraque Alonso, Antonio
Universidad de Sevilla. Departamento de Física Aplicada I
2016-02-08T12:15:04Z
2016-02-08T12:15:04Z
2016-02-08T12:15:04Z
2001
info:eu-repo/semantics/conferenceObject
Acedo García, M., Radu, I., Frutos Rayego, F., Filippini, J.C., Jiménez Marín, A., Pérez Gómez, J.A. y Jadraque Alonso, A. (2001). The characterization of a LDPE affected by different levels of water tree degradation using absorption current measurements. IEEE.
0-7803-6352-3
http://hdl.handle.net/11441/34311
http://dx.doi.org/10.1109/ICSD.2001.955711
https://idus.us.es/xmlui/handle/11441/34311
eng
2001 IEEE 7th International Conference on Solid Dielectrics, 167-17, June 25-29,2001, Eindhoven, the Netherlands
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=955711
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
IEEE
oai:idus.us.es:11441/1472022024-02-14T09:18:37Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
Room temperature deposition of highly dense TiO2 thin films by Filtered Cathodic Vacuum Arc
Guillén Guillén, Elena
Heras, Irene
Rincón Llorente, G.
Lungwitz, Frank
Alcón Camas, M.
Escobar-Galindo, Ramón
Universidad de Sevilla. Departamento de Física Aplicada I
European Union (UE). H2020
Titanium dioxide
cathodic arc
optical properties
A systematic study of TiO2 films deposited by dc filtered cathodic vacuum arc (FCVA) was carried out by varying the deposition parameters in a reactive oxygen atmosphere. The influence of the oxygen partial pressure on film properties is analyzed. Composition was obtained by Rutherford backscattering spectroscopy (RBS) measurements, which also allow us to obtain the density of the films. Morphology of the samples was studied by scanning electron microscopy (SEM) and their optical properties by ellipsometry. Transparent, very dense and stoichiometric TiO2 films were obtained by FCVA at room temperature.
2023-06-14T10:34:03Z
2023-06-14T10:34:03Z
2023-06-14T10:34:03Z
2015
info:eu-repo/semantics/conferenceObject
Guillén Guillén, E., Heras, I., Rincón Llorente, G., Lungwitz, F., Alcón Camas, M. y Escobar-Galindo, R. (2015). Room temperature deposition of highly dense TiO2 thin films by Filtered Cathodic Vacuum Arc. En Nanoscience + Engineering California, Estados Unidos: SPIE Digital Library.
9781628417241
0277-786X (impreso)
https://hdl.handle.net/11441/147202
10.1117/12.2189503
eng
Nanoscience + Engineering (2015).
Friends2
https://www.spiedigitallibrary.org/conference-proceedings-of-spie/9558/1/Room-temperature-deposition-of-highly-dense-TiO2-thin-films-by/10.1117/12.2189503.full
Washington, USA
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
SPIE Digital Library
oai:idus.us.es:11441/269612024-02-15T07:40:32Zcom_11441_10848com_11441_10802com_11441_10690com_11441_11351com_11441_11290com_11441_11361com_11441_10888com_11441_11376com_11441_10898com_11441_11240com_11441_11099col_11441_10851col_11441_11354col_11441_11364col_11441_53666col_11441_11379col_11441_10901col_11441_11243
Protagonismo del mentor en una actividad tutorial de carácter multidisciplinar en Ingeniería
Durán-Barrantes, María de la Montaña
Ager Vázquez, Francisco José
Bachiller-Soler, Alfonso
Bravo-Rodríguez, Juan Carlos
Cordobés Carmona, Felipe
Gasch Illescas, Consolación
Gómez-Alós, Milagros
Jiménez Jiménez, María Nieves
Lebrón Rueda, Esperanza Angustias
López Vázquez, Jorge Jesús
Miró Amarante, Gloria
Morón Romero, María del Carmen
Romero Rodríguez, Soledad
Ruiz Domínguez, Manuela
Sánchez Gómez, Ana Beatriz
Santana Hidalgo, Amalia
Sepúlveda Ferrer, Ranier Enrique
Universidad de Sevilla. Departamento de Ingeniería Química
Universidad de Sevilla. Departamento de Física Aplicada I
Universidad de Sevilla. Departamento de Ingeniería Eléctrica
Universidad de Sevilla. Departamento de Matemática Aplicada II
Universidad de Sevilla. Departamento de Métodos de Investigación y Diagnóstico en Educación
Universidad de Sevilla. Departamento de Ingeniería Energética
Universidad de Sevilla. Departamento de Ingeniería y Ciencia de los Materiales y del Transporte
Escuela Politécnica Superior de Sevilla
Mentoría
Tutoría entre iguales
Mentoring
Peer Tutoring
En la Escuela Politécnica Superior (EPS) de la Universidad de Sevilla se ha trabajado, por tercer curso consecutivo, en un Plan de Acción Tutorial desarrollado por 16 profesores tutores y 20 alumnos mentores de 5 titulaciones de Ingeniería Técnica. El objetivo perseguido en este curso ha sido potenciar actividades que han surgido del propio albedrío de los alumnos mentores, lo que ha dado como resultado la realización de una serie de actividades de mentoría motivadas y dirigidas desde el principio por los alumnos mentores. La actividad conjunta de todos ellos ha llevado a organizar unos subgrupos de mentorías en función de determinadas características del alumnado de primer curso (deportistas, trabajadores, becarios de otras universidades…), a realizar reuniones presenciales de mentores para puesta a punto de estas actividades así como de puesta al día de los resultados que se iban consiguiendo, además de organizar una segunda captación de mentorizados tras las notas del primer cuatrimestre, y la protagonización de una Jornada de Mentoría al final del curso.
A third edition with 16 tutorial lecturers and 20 tutorial students from five different degrees (Technical Engineering of the Polytechnical School, EPS, at University of Seville) in a Tutorial Plan development, has been prepared. During the present year, the main characteristic has been a serial of mentoring actions motivated and directed by these mentors. This activity has been organized considering several subgroups of mentoring depending on special characteristics in first year students (sportsplayers, workers, grant holders from other universities…), moreover the organization of a second recruiting of new students after the first term marks, updating meetings for mentors only, and to be main figures in a Congress on Mentoring at the end of the academic year.
2015-07-18T19:58:24Z
2015-07-18T19:58:24Z
2015-07-18T19:58:24Z
2011-07
info:eu-repo/semantics/conferenceObject
http://hdl.handle.net/11441/26961
https://idus.us.es/xmlui/handle/11441/26961
spa
XIX Congreso Universitario de Innovación Educativa en las Enseñanzas Técnicas: CUIETT 2011, 11 p.
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
oai:idus.us.es:11441/496682023-01-31T12:50:37Zcom_11441_10848com_11441_10802com_11441_10690com_11441_10858col_11441_10851col_11441_10861
Aplicaciones de técnicas nucleares de análisis no destructivo al Patrimonio Cultural
Respaldiza Galisteo, Miguel Ángel
Ager Vázquez, Francisco José
Gómez-Tubio, Blanca María
Križnar, Anabelle
Laclavetine, Kilian
Moreno-Suárez, Ana Isabel
Ortega-Feliú, Inés
Scrivano, Simona
Universidad de Sevilla. Departamento de Física Aplicada I
Universidad de Sevilla. Departamento de Física Aplicada III
Universidad de Sevilla. Departamento de Física Aplicada I
2016-12-05T08:37:57Z
2016-12-05T08:37:57Z
2016-12-05T08:37:57Z
2011
info:eu-repo/semantics/conferenceObject
Respaldiza Galisteo, M.Á., Ager Vázquez, F.J., Gómez Tubio, B.M., Križnar, A., Laclavetine, K., Moreno Suarez, A.I.,...,Scrivano, S. (2011). Aplicaciones de técnicas nucleares de análisis no destructivo al Patrimonio Cultural. En Primera Reunión de la Red de Ciencia y Tecnología para la Conservación del Patrimonio (105-110), Madrid: CSIC - Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS).
978-84-694-6137-2
http://hdl.handle.net/11441/49668
https://idus.us.es/xmlui/handle/11441/49668
spa
Sevilla
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
CSIC - Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS)
oai:idus.us.es:11441/1477582024-02-15T07:22:28Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10849col_11441_10851
The design of an electrostatic variable energy positron beam for studies of defects in ceramic coatings and polymer films
Abadjieva, E.
Schut, Henk
Alba García, A.
Escobar-Galindo, Ramón
Veen, A. van
Pimblott, S.M.
Universidad de Sevilla. Departamento de Física Aplicada I
Electrostatic positron beam
Doppler-broadening
Positron lifetime
An electrostatic variable energy positron beam for studying defects in ceramic coatings, polymer films and MOS-devices is developed for operation in Doppler-broadening (DB) and positron annihilation lifetime (PAL) modes. In DB mode the implantation energy can be varied between 3 and 30 keV with a beam diameter on the target ranging from 0.4 to 0.5 mm FWHM. In PAL mode the start-signal is given by secondary electron emission from a 25 nm thin carbon foil placed in front of the target. After passing the foil the positron beam is focused on the target with a spot size of 2 mm FWHM at 1 keV down to 0.6 mm FWHM at 30 keV. The target chamber is equipped with an in situ four-point bending device for studying defects introduced by tensile and compressive stresses.
2023-07-06T09:30:33Z
2023-07-06T09:30:33Z
2023-07-06T09:30:33Z
2002-06-22
info:eu-repo/semantics/article
Abadjieva, E., Schut, H., Alba García, A., Escobar-Galindo, R., Veen, A.v. y Pimblott, S.M. (2002). The design of an electrostatic variable energy positron beam for studies of defects in ceramic coatings and polymer films. Applied Surface Science, 194 (1-4), 47-51. https://doi.org/10.1016/S0169-4332(02)00087-9.
0169-4332 (Impreso)
1873-5584 (online)
https://hdl.handle.net/11441/147758
10.1016/S0169-4332(02)00087-9
eng
Applied Surface Science, 194 (1-4), 47-51.
https://www.sciencedirect.com/science/article/pii/S0169433202000879
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
ScienceDirect
oai:idus.us.es:11441/988932024-02-14T20:30:01Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
A linear polar molecule in a two-color laser field: a symmetry analysis
Mellado-Alcedo, David
Quintero, Niurka R.
González-Férez, Rosario
Vernhet, Dominique
Dulieu, Olivier
Universidad de Sevilla. Departamento de Física Aplicada I
Universidad de Sevilla. FQM-207 Física Atómica y Molecular
We describe the field-dressed rotational dynamics of a linear polar molecule in a a non-resonant
two-color cw laser field, and analyze the orientation and alignment as the field parameters are varied.
2020-07-07T07:48:11Z
2020-07-07T07:48:11Z
2020-07-07T07:48:11Z
2020
info:eu-repo/semantics/conferenceObject
Mellado-Alcedo, D., Quintero, N.R. y González-Férez, R. (2020). A linear polar molecule in a two-color laser field: a symmetry analysis. En 31st International Conference on Photonic, Electronic and Atomic Collisions (ICPEAC XXXI) (122024-), Deauville, France: IOP Publishing: Conference Series.
1742-6588
1742-6596
https://hdl.handle.net/11441/98893
10.1088/1742-6596/1412/12/122024
eng
31st International Conference on Photonic, Electronic and Atomic Collisions (ICPEAC XXXI) (2020), p 122024-.
https://iopscience.iop.org/article/10.1088/1742-6596/1412/12/122024
Bristol (United Kingdom)
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
IOP Publishing: Conference Series
oai:idus.us.es:11441/342932024-02-13T20:08:09Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
Dielectric breakdown of SiO2 thin films deposited by ion beam induced and plasma enhanced CVD
Barranco Quero, Ángel
Jiménez Marín, Alfonso
Frutos Rayego, Fabián
Cotrino Bautista, José
Yubero Valencia, Francisco
Espinós Manzorro, Juan Pedro
González Elipe, A. R.
Universidad de Sevilla. Departamento de Física Aplicada I
2016-02-08T11:41:04Z
2016-02-08T11:41:04Z
2016-02-08T11:41:04Z
2001
info:eu-repo/semantics/conferenceObject
Barranco, A., Jiménez Marín, A., Frutos Rayego, F., Cotrino Bautista, J., Yubero Valencia, F., Espinós Manzorro, J.P. y González Elipe, A.R. (2001). Dielectric breakdown of SiO2 thin films deposited by ion beam induced and plasma enhanced CVD. IEEE.
0-7803-6352-3
http://hdl.handle.net/11441/34293
http://dx.doi.org/10.1109/ICSD.2001.955633
https://idus.us.es/xmlui/handle/11441/34293
eng
2001 IEEE 7th International Conference on Solid Dielectrics, 303-306, June 25-29,2001, Eindhoven, the Netherlands
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=955633
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
IEEE
oai:idus.us.es:11441/947342024-02-14T19:29:36Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
Atomic Dark-Bright Solitons: Theory and Experiments
Frantzeskakis, Dimitri J.
Kevrekidis, Panayotis G.
Yan, Dong
Carretero-González, Ricardo
Hoefer, Mark A.
Engels, Peter
Chang, J. J.
Hamner, Chris R.
Schmelcher, P.
Middelkamp, S.
Stockhofe, J.
Cuevas-Maraver, Jesús
Álvarez Chillida, María Azucena
Achilleos, Vassos
Rothos, Vassilis M.V
Universidad de Sevilla. Departamento de Física Aplicada I
Universidad de Sevilla .FQM280: Física no Lineal
2020-03-31T11:26:10Z
2020-03-31T11:26:10Z
2020-03-31T11:26:10Z
2012
info:eu-repo/semantics/conferenceObject
Frantzeskakis, D.J., Kevrekidis, P.G., Yan, D., Carretero-González, R., Hoefer, M.A., Engels, P.,...,Rothos, V.M.V. (2012). Atomic Dark-Bright Solitons: Theory and Experiments. En 2nd Conference on Localized Excitations in Nonlinear Complex Systems (LENCOS'12), Sevilla (España).
https://hdl.handle.net/11441/94734
eng
2nd Conference on Localized Excitations in Nonlinear Complex Systems (LENCOS'12) (2012),
http://congreso.us.es/lencos/
Sevilla
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
oai:idus.us.es:11441/260472024-02-14T13:52:40Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
Overdamped deterministic ratchets driven by multifrequency forces
Cubero, David
Casado Pascual, Jesús
Álvarez Chillida, María Azucena
Morillo Buzón, Manuel
Hänggi, Peter
Universidad de Sevilla. Departamento de Física Aplicada I
Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear
Ministerio de Educación y Ciencia (MEC). España
Junta de Andalucía
We investigate a dissipative, deterministic ratchet model in the overdamped regime driven by a rectangular force. Extensive numerical calculations are presented in a diagram depicting the drift velocity as a function of a wide range of the driving parameter values. We also present some theoretical considerations which explain some features of the mentioned diagram. In particular, we proof the existence of regions in the driving parameter space with bounded particle motion possessing zero current. Moreover, we present an explicit analytical expression for the drift velocity in the adiabatic limit.
2015-06-24T07:35:21Z
2015-06-24T07:35:21Z
2015-06-24T07:35:21Z
2006
info:eu-repo/semantics/conferenceObject
0587-4254
1509-5770
http://hdl.handle.net/11441/26047
https://idus.us.es/xmlui/handle/11441/26047
eng
Acta Physica Polonica B, 37(5), 1467-1477
http://www.actaphys.uj.edu.pl/_cur/store/vol37/pdf/v37p1467.pdf
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Jagellonian University, Cracow
oai:idus.us.es:11441/350872024-02-14T20:05:03Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10850col_11441_10851
Experimental observation of moving intrinsic localized modes in germanium
Archilla, Juan F. R.
Coelho, Sergio M.M.
Danie Auret, F.
Nyamhere, Cloud
Dubinko, Vladimir
Hizhnyakov, Vladimir
Universidad de Sevilla. Departamento de Física Aplicada I
Germanium
ILM
discrete breathers
quodons
defects
DLTS
Deep level transient spectroscopy shows that defects created by alpha irradiation
of germanium are annealed by low energy plasma ions up to a depth of
several thousand lattice units. The plasma ions have energies of 2-8 eV and therefore
can deliver energies of the order of a few eV to the germaniumatoms. The most
abundant defect is identified as the E-center, a complex of the dopant antimony and
a vacancy with and annealing energy of 1.3 eV as determined by our measurements.
The inductively coupled plasma has a very low density and a very low flux of ions.
This implies that the ion impacts are almost isolated both in time and at the surface
of the semiconductor.We conclude that energy of the order of an eV is able to travel
a large distance in germanium in a localized way and is delivered to the defects effectively.
The most likely candidates are vibrational nonlinear wave packets known
as intrinsic localized modes, which exist for a limited range of energies. This property
is coherent with the fact that more energetic ions are less efficient at producing
the annealing effect.
2016-02-18T09:16:27Z
2016-02-18T09:16:27Z
2016-02-18T09:16:27Z
2015
info:eu-repo/semantics/bookPart
978-3-319-21044-5
http://hdl.handle.net/11441/35087
http://dx.doi.org/10.1007/978-3-319-21045-2_14
https://idus.us.es/xmlui/handle/11441/35087
eng
Quodons in Mica: Nonlinear Localized Travelling Excitations in Crystals, Springer, 2015, 343-362
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Springer
oai:idus.us.es:11441/430962024-02-14T11:10:21Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
Two-dimensional discrete solitons in rotating optical lattices
Cuevas-Maraver, Jesús
Malomed, Boris A.
Kevrekidis, Panayotis G.
Universidad de Sevilla. Departamento de Física Aplicada I
Universidad de Sevilla. FQM280: Fisica no Lineal
2016-07-04T11:31:58Z
2016-07-04T11:31:58Z
2016-07-04T11:31:58Z
2008
info:eu-repo/semantics/conferenceObject
Cuevas-Maraver, J., Malomed, B.A. y Kevrekidis, P.G. (2008). Two-dimensional discrete solitons in rotating optical lattices. Universidad de Sevilla. FQM280: Fisica no Lineal.Recuperado de
http://hdl.handle.net/11441/43096
https://idus.us.es/xmlui/handle/11441/43096
eng
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
oai:idus.us.es:11441/342422024-02-14T20:30:30Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
Comparative Study of Conductivity in Mid-Voltage Cable XLPE Insulation
Frutos Rayego, Fabián
Acedo García, Miguel
Jadraque Alonso, Antonio
Mudarra, M.
Sellarés, J.
Belana, J.
Universidad de Sevilla. Departamento de Física Aplicada I
It is well established that space charge conditions
insulation lifetime. Because of this, space charge
formation and relaxation processes characterization has
become a very active research field, not only from an basic
science point of view, but also in order to improve
insulation performance in cable and other devices.
In the case of mid-voltage power cable, crosslinked
polyethylene is widely used as insulator. Service temperature
of such cables is around 90°C, which in the case
of the cable insulation studied is in the melting temperature
range. In previous works it has been determined that
at this temperature conductivity plays a relevant role in
the space charge relaxation process, so that the characterization
of conductive processes at service temperature
may become important in order to enhance cable insulation
performance. The aim of this work is to contribute to
a better knowledge of the conductive properties of XLPE
in both time and frequency domains.
2016-02-08T06:43:14Z
2016-02-08T06:43:14Z
2016-02-08T06:43:14Z
2004
info:eu-repo/semantics/conferenceObject
0-7803-8348-6
http://hdl.handle.net/11441/34242
http://dx.doi.org/10.1109/ICSD.2004.1350304
https://idus.us.es/xmlui/handle/11441/34242
eng
2004 International Conference on Solid Dielectrics (1), 119-122, Toulouse, France, July 5-9, 2004
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1350304
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
IEEE
oai:idus.us.es:11441/1428602024-02-14T13:40:48Zcom_11441_10848com_11441_10802com_11441_10690com_11441_10863com_11441_10963col_11441_10851col_11441_10866col_11441_10966
Vapor and liquid optical monitoring with sculptured Bragg microcavities
Oliva Ramírez, Manuel
Gil Rostra, Jorge
López Santos, Carmen
Rodríguez González-Elipe, Agustín
Yubero Valencia, Francisco
Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear
Universidad de Sevilla. Departamento de Física Aplicada I
Ministerio de Economia, Industria y Competitividad (MINECO). España
Agencia Estatal de Investigación. España
Bragg Microcavities
Liquid sensing
Optofluidics
Porous films
Sculptured thin films
Vapor sensing
Sculptured porous Bragg Microcavities (BMs) formed by the successive stacking of columnar SiO2 and TiO2 thin films with zig-zag columnar microstructure are prepared by glancing angle deposition. These BMs act as wavelength dependent optical retarders. This optical behavior is attributed to a self-structuration mechanism involving a fence-bundling association of nanocolumns as observed by Focused Ion Beam Scanning Electron Microscopy. The retardance of these optically active BMs can be modulated by dynamic infiltration of their open porosity with vapors, liquids or solutions with different refractive indices. The tunable birefringence of these nanostructured photonic systems have been successfully simulated with a simple model that assumes that each layer within the BMs stack has uniaxial birefringence. This type of self-associated nanostructures has been incorporated to microfluidic chips for free label vapor and liquid sensing. Several examples of the detection performance of these chips, working either in reflection or transmission configuration, for the optical characterization of vapor and liquids of different refractive index and aqueous solutions of glucose flowing through the microfluidic chips are described.
2023-02-21T16:58:40Z
2023-02-21T16:58:40Z
2023-02-21T16:58:40Z
2017
info:eu-repo/semantics/conferenceObject
Oliva Ramírez, M., Gil Rostra, J., López Santos, C., Rodríguez González-Elipe, A. y Yubero Valencia, F. (2017). Vapor and liquid optical monitoring with sculptured Bragg microcavities. En Nanostructured Thin Films X 2017 (1035603-), San Diego, USA: SPIE - The International Society for Optical Engineering.
978-151061169-6
0277-786X
1996-756X
https://hdl.handle.net/11441/142860
10.1117/12.2272411
eng
Nanostructured Thin Films X 2017 (2017), pp. 1035603-..
MAT2016-79866-R
CSIC 201560E055
https://doi.org/10.1117/12.2272411
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
SPIE - The International Society for Optical Engineering
oai:idus.us.es:11441/430942024-02-14T19:25:42Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
Discrete solitons in optical BEC lattices. Effects of n-body interactions
Cuevas-Maraver, Jesús
Kevrekidis, Panayotis G.
Karachalios, Nikolaos I.
Melvin, Thomas R.O.
Champneys, A. R.
Eilbeck, J. Chris
Universidad de Sevilla. Departamento de Física Aplicada I
Universidad de Sevilla. FQM280: Fisica no Lineal
In this poster we show some recent results concerning discrete solitons in strong optical lattices, which can be described by the Discrete Nonlinear Schrödinger equation. These results are related to a variation of this equation including saturable nonlinearity terms, a feature throughoutly studied in nonlinear optics. After presenting the derivation of the DNLS equation from the Gross-Pitaevskii equation in the presence of a strong optical lattice, we study the existence of thresholds in the quadratic norm of discrete solitons in the cubic DNLS, cubic-quintic DNLS and photorefractive-DNLS. The second part of the poster is devoted to moving discrete solitons in the photorefractive DNLS equation. In the one hand, we study the existence of radiationless moving discrete solitons; on the other hand, we study the collisions of moving discrete solitons.
2016-07-04T11:29:11Z
2016-07-04T11:29:11Z
2016-07-04T11:29:11Z
2006
info:eu-repo/semantics/conferenceObject
Cuevas-Maraver, J., Kevrekidis, P.G., Karachalios, N.I., Melvin, T.R.O., Champneys, A.R. y Eilbeck, J.C. (2006). Discrete solitons in optical BEC lattices. Effects of n-body interactions. Universidad de Sevilla. FQM280: Fisica no Lineal.Recuperado de
http://hdl.handle.net/11441/43094
https://idus.us.es/xmlui/handle/11441/43094
eng
Solitons and nonlinear phenomena in degenerate quantum gases From the mathematical theory to the experimental facts (2006),
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
oai:idus.us.es:11441/1480112024-02-17T16:22:34Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
One-dimensional models for liquid columns subjected to electric fields
Castellanos Mata, Antonio
García García, Francisco Javier
González García, Heliodoro
Universidad de Sevilla. Departamento de Física Aplicada I
Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo
Universidad de Sevilla. Departamento de Física Aplicada III
Dirección General Interministerial de Ciencia y Tecnología (DGICYT). España
An analysis of slender axisymmetric liquid columns is performed on the basis of one-dimensional models, recently derived and generalized here to include the effect of dielectric forces at the interface. The natural frequencies and stability criteria in the absence of gravity are obtained. Results are compared with the known exact linear solutions of the corresponding three-dimensional problems.
2023-07-17T09:48:33Z
2023-07-17T09:48:33Z
2023-07-17T09:48:33Z
1994-10
info:eu-repo/semantics/conferenceObject
Castellanos Mata, A., García García, F.J. y González García, H. (1994). One-dimensional models for liquid columns subjected to electric fields. https://doi.org/10.1109/IAS.1994.377654.
0-7803-1993-1
https://hdl.handle.net/11441/148011
10.1109/IAS.1994.377654
eng
null
PB90-0935
https://ieeexplore.ieee.org/document/377654
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
IEEE
oai:idus.us.es:11441/250482024-02-14T08:52:15Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
Breathers in FPU systems, near and far from the phonon band
Sánchez-Rey, Bernardo
Archilla, Juan F. R.
James, Guillaume
Cuevas-Maraver, Jesús
Universidad de Sevilla. Departamento de Física Aplicada I
2015-05-27T13:11:49Z
2015-05-27T13:11:49Z
2015-05-27T13:11:49Z
2003
info:eu-repo/semantics/conferenceObject
978-981-238-296-2
978-981-4486-51-4
http://hdl.handle.net/11441/25048
https://idus.us.es/xmlui/handle/11441/25048
eng
L. Vázquez, R. S. MacKay & M. P. Zorzano (Eds.), Localization and Energy Transfer in Nonlinear Systems. Proceedings of the Third Conference San Lorenzo de El Escorial Madrid, Spain, 17 – 21 June 2002 (pp. 342-343). Singapore: World Scientific
http://www.worldscientific.com/worldscibooks/10.1142/5214
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
World Scientific
oai:idus.us.es:11441/252522024-02-17T16:55:40Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
Breathers and surface modes in oscillator chains with Hertz ian interactions
James, Guillaume
Cuevas-Maraver, Jesús
Kevrekidis, Panayotis G.
Universidad de Sevilla. Departamento de Física Aplicada I
Ministerio de Ciencia e Innovación (MICIN). España
Nonlinear sciences
pattern formation and solitons mathematics
dynamical systems
We study localized waves in chains of oscillators coupled by Hertzian interactions and trapped in local potentials. This problem is originally motivated by Newton's cradle, a mechanical system consisting of a chain of touching beads subject to gravity and attached to inelastic strings. We consider an unusual setting with local oscillations and collisions acting on similar time scales, a situation corresponding e.g. to a modified Newton's cradle with beads mounted on stiff cantilevers. Such systems support static and traveling breathers with unusual properties, including double exponential spatial decay, almost vanishing Peierls-Nabarro barrier and spontaneous direction-reversing motion. We prove analytically the existence of surface modes and static breathers for anharmonic on-site potentials and weak Hertzian interactions.
2015-06-05T09:02:00Z
2015-06-05T09:02:00Z
2015-06-05T09:02:00Z
2012
info:eu-repo/semantics/conferenceObject
http://hdl.handle.net/11441/25252
https://idus.us.es/xmlui/handle/11441/25252
eng
International Symposium on Nonlinear Theory and its Applications (2012. Palma de Mayorca, Spain)
http://www.ieice.org/ess/nolta/2012
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
NOLTA
oai:idus.us.es:11441/1366032024-02-13T20:03:47Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10851
Impacto de la docencia asíncrona en el desarrollo de las competencias
Delgado Sánchez, José María
Universidad de Sevilla. Departamento de Física Aplicada I
Universidad de Sevilla. TEP122: Termodinámica y Energías Renovables
Docencia asíncrona
Docencia presencial
Competencias
COVID-19
Asynchronous teaching
Presential teaching
Competencies
Las competencias descritas en los diferentes planes de estudio se consideran una herramienta esencial para la
integración profesional y social de los estudiantes en la Sociedad. Cualidades como “trabajo en equipo”, “colaboración”
o “adaptación” son cada vez más valoradas por las empresas, superando incluso a veces la especialización
técnica del candidato. El presente estudio analiza el impacto que ha tenido en las competencias la adaptación
de los planes de estudio a la docencia asíncrona necesaria durante el tiempo de pandemia COVID-19. Se ha
comparado como cada competencia se ha visto influenciada por situaciones de aislamiento o interacción social.
The competencies described in the different teaching plans are considered a social tool to enhance the professional
and social integration of the students in the Society. Skills like “teamwork”, “collaboration” or “adaptability”
are highly demanded for the companies, sometimes even more than a high degree of technical specialization. The
present research study analyzes the impact on the different competencies during the COVID-19 pandemic period.
Teaching plans were reviewed and adapted to asynchronous mode. It has been compared how each competency
has been influenced by the social isolation or social interaction.
2022-09-01T10:32:41Z
2022-09-01T10:32:41Z
2022-09-01T10:32:41Z
2021
info:eu-repo/semantics/conferenceObject
Delgado Sánchez, J.M. (2021). Impacto de la docencia asíncrona en el desarrollo de las competencias. En CIVINEDU 2021 5th International Virtual Conference onEducational Research and Innovation (254-257), Adaya Press; REDINE.
978-84-124511-1-5
https://hdl.handle.net/11441/136603
spa
CIVINEDU 2021 5th International Virtual Conference onEducational Research and Innovation (2021), pp. 254-257.
Madrid
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Adaya Press; REDINE
oai:idus.us.es:11441/1476632024-02-13T20:18:52Zcom_11441_10848com_11441_10802com_11441_10690col_11441_10849col_11441_10851
Thermally induced delamination of amorphous hydrogenated carbon coatings monitored by positron beam analysis
Escobar-Galindo, Ramón
Veen, A. van
Schut, Henk
Rabbani, F.
Janssen, G.C.A.M.
Hosson, J.Th.M. de
Universidad de Sevilla. Departamento de Física Aplicada I
In this work we have studied the adhesion of PVD amorphous hydrogenated carbon (a-C:H) thin coatings (<200 nm) on crystalline silicon by means of positron beam analysis (PBA). PBA allows the study of the a-C:H layer and the interface by monitoring changes on the Doppler broadening parameters S and W. Depending on the deposition condition, using PBA some samples were found to be delaminated after deposition. Annealing experiments were performed on samples that did not show signs of delamination after deposition. Some of these samples were distinguished by the fact that nitrogen was used in the manufacturing process. Samples were annealed for 30 min in vacuum up to 600 °C in order to remove gases absorbed at the interface. PBA experiments were performed after each annealing step. For the sample without N2 there are no S–W changes either in the coating or at the interface until 600 °C is reached. On the other hand, for the sample containing N2, there is a gradual change in these parameters with temperature. In this coating, after annealing to 500 °C, the increase in W is related to release of H2 and consequent restructuring of the layer. The decrease in the value of S between 500 and 600 °C indicates the formation of graphitic crystallites. There is open volume at the coating/substrate interface since the S parameter gradually increases while W remains constant until 400 °C. This behaviour in S–W is related to the removal of physisorbed hydrogen. At approximately 400 °C the H bonded to C at tetrahedral sites is also released which leads to an internal restructuring of the ‘lattice’, hence a decrease in the value of S is observed. Finally, at 600 °C both coatings delaminate, as the interface parameters tend towards the same values as those of the sample which had delaminated after deposition.
2023-07-04T10:43:26Z
2023-07-04T10:43:26Z
2023-07-04T10:43:26Z
2004-03
info:eu-repo/semantics/article
Escobar-Galindo, R., Veen, A.v., Schut, H., Rabbani, F., Janssen, G.C.A.M. y Hosson, J.T.M.d. (2004). Thermally induced delamination of amorphous hydrogenated carbon coatings monitored by positron beam analysis. Surface and Coatings Technology, 180-181, 207-212. https://doi.org/10.1016/j.surfcoat.2003.10.042.
0257-8972 (impreso)
1879-3347 (online)
https://hdl.handle.net/11441/147663
10.1016/j.surfcoat.2003.10.042
eng
Surface and Coatings Technology, 180-181, 207-212.
https://www.sciencedirect.com/science/article/pii/S0257897203011903
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
ScienceDirect