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Mostrando ítems 1-10 de 19
Artículo
Influence of spacer layer morphology on the exchange-bias properties of reactively sputtered Co ∕ Ag multilayers
(American Physical Society, 2007-09-25)
We have studied the magnetic properties of [Ag(tAg)/Co(1.2nm)]60 multilayers grown in an oxygen atmosphere. Partial oxidation of the Co layers results in the appearance of tAg dependent exchange-bias properties. A strong ...
Artículo
Thermal equilibrium and statistical thermometers in special relativity
(American Physical Society, 2007)
There is an intense debate in the recent literature about the correct generalization of Maxwell’s velocity distribution in special relativity. The most frequently discussed candidate distributions include the Jüttner ...
Artículo
New classes of stable exact solutions for a nonlinear rotational DNA model
(Jagellonian University, 2010)
We consider a system of two coupled nonlinear partial differential equations for describing the rotational motions of bases in both polynucleotide chains of the DNA molecule. The model was proposed by L.V. Yakushevich and ...
Artículo
Ra-226 in waters of an estuarine system formerly affected by direct discharges of wastes from a phosphate fertilizer processing complex
(Springer, 2001)
The presence of 226 Ra in an estuary formerly affected by direct discharges of waste from a phosphate fertilizer complex has been investigated. Specific activities ranging from 3.6 to 45.2 mBq/l have been detected. In ...
Artículo
Very large stochastic resonance gains in finite sets of interacting identical subsystems driven by subthreshold rectangular pulses
(American Physical Society, 2007)
We study the phenomenon of nonlinear stochastic resonance (SR) in a complex noisy system formed by a finite number of interacting subunits driven by rectangular pulsed time periodic forces. We find that very large SR gains ...
Artículo
Measuring and modelling temporal trends of 226Ra in waters of a Spanish estuary affected by the phosphate industry
(Elsevier, 2005)
The presence and temporal evolution (1990–2001) of 226Ra in a tidal estuary affected by the phosphate industry has been investigated. Water samples collected in the course of four sep arate sampling campaigns were analysed ...
Artículo
Comment on “Markovian approximation in a coarse-grained description of atomic systems” [J. Chem. Phys.125, 204101 (2006)]
(American Institute of Physics, 2008)
The authors concluded that the coarse-graining dynamics of a one-dimensional chain of oscillators interacting through Lennard–Jones potentials is Markovian, in contrast with the situation observed for harmonic lattices. ...
Artículo
Las arenas eólicas del Pleistoceno Superior en Gibraltar
(Sociedad Geológica de España, 2010)
During the period represented by the sandy infills of the eastern flank caves and the Catalan Sand formation, it was likely that Gibraltar was part of the mainland, including a broad coastal plain covered with transgressive ...
Artículo
Symmetries shape the current in ratchets induced by a biharmonic driving force
(2010-03-23)
Equations describing the evolution of particles, solitons, or localized structures, driven by a zero-average, periodic, external force, and invariant under time reversal and a half-period time shift, exhibit a ratchet ...
Artículo
Stochastic resonance with weak monochromatic driving: Gains above unity induced by high-frequency signals
(European Physical Society, 2007)
We study the effects of a high-frequency (HF) signal on the response of a noisy bistable system to a low-frequency subthreshold sinusoidal signal. We show that, by conveniently choosing the ratio of the amplitude of the ...