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Artículo
Modelling the spatio-temporal evolution of H-3 in the waters of the River Tagus
(Elsevier, 2006)
Measurements of tritium specific activity levels and of temperatures in waters of the Torrejo´neTagus reservoir (Spain) showed that their radioactive characteristics were basically influenced by the radioactive liquid ...
Artículo
Current reversals in a rocking ratchet: dynamical versus symmetry-breaking mechanisms
(American Physical Society, 2010)
Directed transport in ratchets is determined by symmetry breaking in a system out of equilibrium. A hallmark of rocking ratchets is current reversals: an increase in the rocking force changes the direction of the current. ...
Artículo
Passive Planar Microwave Devices
(MDPI, 2022-04)
Passive planar circuits play a key role in many RF/microwave applications, such as in wireless communications, medical instrumentation, and remote sensing. From their earliest developments during World War II to the ...
Artículo
Adhesion behaviour of CrNx coatings on pre-treated metal substrates studied in situ by PBA and ESEM after annealing
(ScienceDirect, 2005-09-01)
In this paper we present the first combined Positron Beam Analysis (PBA) and Environmental Scanning Electron Microscopy (ESEM) adhesion study on thin chromium nitride (CrNx) coatings. Both techniques are combined with a ...
Artículo
U- and Th-isotopes in an estuarine system in southwest Spain: Tidal and seasonal variations
(Elsevier, 1996)
The presence of U- and Th-isotopes in suspended matter from an estuarine system which surrounds a phosphate fertilizer processing complex has been investigated. A clear radioactive impact from the complex has been confirmed ...
Artículo
Evolution of Gaussian wave packets in capillary jets
(American Physical Society, 2019)
A temporal analysis of the evolution of Gaussian wave packets in cylindrical capillary jets is presented through both a linear two-mode formulation and a one-dimensional nonlinear numerical scheme. These analyses are ...
Artículo
Nano-porosity in silica reinforced methyltrimethoxysilane coatings studied by positron beam analysis
(ScienceDirect, 2003-06)
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. ...
Artículo
Propulsion efficiency of a dynamic self-assembled helical ribbon
(2013)
We study the dynamic self-assembly and propulsion of a ribbon formed from paramagnetic colloids in a dynamic magnetic field. The sedimented ribbon assembles due to time averaged dipolar interactions between the beads. The ...
Artículo
Novel Mo–Si3N4 based selective coating for high temperature concentrating solar power applications
(ScienceDirect, 2014-03)
A novel selective coating material based on Mo–Si3N4 has been investigated for the first time. Accurate combination of the individual component layers based on optical simulations and precise control of layers thickness ...
Artículo
Mechanisms of Oxidation of NdNiO3−δ Thermochromic Thin Films Synthesized by a Two-Step Method in Soft Conditions
(American Chemical Society, 2014-02-24)
Considering it is somewhat difficult to crystallize thermochromic nickelates through a soft process, a major challenge in NdNiO3 crystallization is the stabilization of the Ni3+ oxidation state against Ni2+. The aim of the ...