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Mostrando ítems 351-360 de 896
Artículo
Moving breather collisions in Klein-Gordon chains of oscillators
(2009)
We investigate the collisions of moving breathers, with the same frequency, in three different Klein-Gordon chains of oscillators. The on-site potentials are: the asymmetric and soft Morse potential, the symmetric and soft ...
Artículo
Levels of 25 trace elements in high-volume air filter samples from Seville (2001–2002): Sources, enrichment factors and temporal variations
(Elsevier, 2015)
The measurement of trace element concentration in aerosols is of interest for environmental studies and for human health assessment. The temporal variability of total suspended particles (TSP) and its elemental composition ...
Ponencia
Perpendicular-field EHD instabilities visualized in a tip-plane configuration
(IEEE Xplore, 2002-10)
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 ...
Artículo
Ratchet effect in a damped sine-Gordon system with additive and parametric ac driving forces
(2006)
We study in detail the damped sine-Gordon equation, driven by two ac forces (one is added as a parametric perturbation and the other one in an additive way), as an example of soliton ratchets. By means of a collective ...
Artículo
Systematic positron study of hydrophilicity of the internal pore surface in ordered low-k silica thin films
(ScienceDirect, 2003-09-15)
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 ...
Ponencia
Estudio del comportamiento de una red CAN basada en el 82C200 de Phillips y en el 82527 de Intel
(Universidad de Zaragoza, 1996)
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 ...
Artículo
Distribution of natural radionuclides in sequentially extracted fractions of sediments from a marsh area in Southwest Spain: U isotopes
(Elsevier, 1999)
A study of the distribution of U in different fractions of intertidal sediments collected in a marsh area enhanced by the radioactive wastes discharged from a fertilizer complex has been carried out. The study has shown ...
Artículo
Zurbarán attribution hypothesis supported by pigment analysis and multiband images observation of four paintings by his workshop
(Nature Research, 2023-01)
Francisco de Zurbarán was one of the greatest painters of the Spanish Golden Age, with artworks scattered all over the world. Unfortunately, there are hardly any exhaustive studies on the pigments that he used. In this ...
Ponencia
A Lagrangian Transport Model Applied to two Different Brackish Systems: the Baltic Sea and the Guadalquivir River
(IEEE Computer Society, 2011)
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 ...
Artículo
Ca-41 measurements on the 1 MV AMS facility at the Centro Nacional de Aceleradores (CNA, Spain)
(ScienceDirect, 2017-12-15)
We present a detailed study of the performance parameters for 41Ca measurements at the 1 MV AMS system at the Centro Nacional de Aceleradores (CNA) in Seville. Mixing CaF2 with Ag, we get stable (40CaF3)− currents between ...