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Mostrando ítems 1-10 de 32
Artículo
Dark lattice solitons in one-dimensional waveguide arrays with defocusing saturable nonlinearity and alternating couplings
(2012)
In the present work, we examine “binary” waveguide arrays, where the coupling between adjacent sites alternates between two distinct values C1 and C2 and a saturable nonlinearity is present on each site. Motivated by ...
Artículo
Modelling the environmental behaviour of pollutants in Algeciras Bay (south Spain)
(Elsevier, 2012)
An environmental study of Algeciras Bay is carried out through numerical modelling. First, a 2D barotrop ic model is applied to calculate tides and mean circulation. Results of this model are used by a sediment transport ...
Artículo
Local scale marine modelling of Fukushima releases. Assessment of water and sediment contamination and sensitivity to water circulation description
(Elsevier, 2012)
The dispersion of 137Cs released from Fukushima nuclear power plant to the sea after the March 11th 2011 tsunami has been studied using numerical models. The 3D dispersion model consists of an advec tion/diffusion equation ...
Artículo
I+D para detectar isótopos de difícil medida
(Empresa Nacional de Residuos Radioactivos, ENRESA, 2012)
Desde que el Centro Nacional de Aceleradores (CNA) abriera sus puertas en 1997, los investigadores españoles cuentan con un laboratorio de referencia para estudiar la caracterización y modificación de materiales. Uno de los ...
Ponencia
Morfología glaciar y postglaciar en el Parque Natural de los Collados del Asón (Cantabria)
(PUbliCan: Ediciones de la Universidad de Cántabria, 2012)
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 ...
Artículo
Microwave-Assisted Synthesis and Luminescence of Mesoporous RE-Doped YPO₄ (RE = Eu, Ce, Tb, and Ce + Tb) Nanophosphors with Lenticular Shape
(American Chemical Society, 2012-02)
Mesoporous tetragonal RE:YPO₄ nanophosphors (RE = Eu, Ce, Tb, and Ce + Tb) with a lenticular morphology, narrow size distribution, and high surface area have been prepared by an homogeneous precipitation procedure consisting ...
Artículo
Nonlinear Dirac equation solitary waves in external fields
(2012)
We consider nonlinear Dirac equations (NLDE's) in the 1+1 dimension with scalar-scalar self-interaction g2κ+1(Ψ¯¯¯Ψ)κ+1 in the presence of various external electromagnetic fields. We find exact solutions for special external ...
Artículo
Plasma Deposition of Perylene–Adamantane Nanocomposite Thin Films for NO₂ Room-Temperature Optical Sensing
(American Chemical Society, 2012-04)
This work reports the preparation, by a new remote assisted plasma deposition process, of luminescent nanocomposite thin films consisting of an insoluble organic matrix where photonically active perylene molecules are ...
Artículo
Caesium-137 and Strontium-90 temporal series in the Tagus River: experimental results and a modelling study
(Elsevier, 2012)
The objective of this work consisted of analysing the spatial and temporal evolution of two radionuclide concentrations in the Tagus River. Time-series analysis techniques and numerical modelling have been used in this ...
Ponencia
Kinks in Coulomb’s chains
(Universidad de Sevilla, 2012)
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 ...