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Mostrando ítems 41-48 de 48
Artículo
Numerical Modeling of the Releases of 90Sr from Fukushima to the Ocean: An Evaluation of the Source Term
(American Chemical Society, 2013)
A numerical model consisting of a 3D advection/diffusion equation, including uptake/release reactions between water and sediments described in a dynamic way, has been applied to simulate the marine releases of 90Sr from ...
Artículo
Redissolution of caesium and plutonium from Irish Sea sediments: A comparison between different modelling approaches
(EDP Sciences, 2005)
Two models with different conceptual and numerical approaches have been used to simulate the dispersion of radionuclides released from Sellafield nuclear fuel reprocessing plant. The first is a long-term box-model for ...
Artículo
Unifying perspective: solitary traveling waves as discrete breathers in Hamiltonian lattices and energy criteria for their stability
(American Physical Society, 2017)
In this work, we provide two complementary perspectives for the (spectral) stability of solitary traveling waves in Hamiltonian nonlinear dynamical lattices, of which the Fermi-Pasta-Ulam and the Toda lattice are ...
Artículo
A new comparison of marine dispersion model performances for Fukushima Dai-ichi releases in the frame of IAEA MODARIA program
(Elsevier, 2015)
A detailed intercomparison of marine dispersion models applied to the releases from Fukushima Dai-ichi nuclear power plant was carried out in the frame of MODARIA program, of the IAEA. Models were compared in such a way ...
Artículo
Formal derivation of dissipative particle dynamics from first principles
(American Physical Society, 2005)
We show that the Markovian approximation assumed in current particle-based coarse-grained techniques, like dissipative particle dynamics, is unreliable in situations in which sound plays an important role. As an example ...
Artículo
A six-phase model to simulate the contamination by non-conservative radionuclides of sediments, soils and plants in a marsh area. Application to the Odiel marsh in southwest Spain
(Elsevier, 1997)
A numerical model to simulate the dispersion of non-conservative radionuclides in an estuarine system that surrounds a marsh area has been developed. The model includes six phases: water, two types of suspended particles ...
Artículo
Marine dispersion assessment of 137Cs released from the Fukushima nuclear accident
(Elsevier, 2013)
Radionuclides were released into the atmosphere and ocean due to an accident in the Fukushima Daiichi Nuclear Power Plant (NPP) in March 2011. Numerical simulations were carried out to evaluate the distribution of 137Cs ...
Artículo
Dispersion analysis of twist-symmetric dielectric waveguides
(MDPI, 2021)
We propose a circular twist-symmetric dielectric waveguide that is polarization-selective. In the practical implementation of optical fibers, a selective circular polarization is more convenient than its linearly polarized ...