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Mostrando ítems 341-350 de 364
Artículo
Hydrodynamics and two-dimensional dark lump solitons for polariton superfluids
(American Physical Society, 2018)
We study a two-dimensional incoherently pumped exciton-polariton condensate described by an open-dissipative Gross-Pitaevskii equation for the polariton dynamics coupled to a rate equation for the exciton density. Adopting ...
Artículo
Microwave-based digestion method for extraction of 127I and 129I from solid material for measurements by AMS and ICP-MS
(Elsevier, 2011)
This work presents a microwave-based digestion method followed by a radiochemical extraction procedure to extract iodine from environmental matrices that provides iodine in a form suitable for the measurement of 129I by ...
Artículo
Characterisation of the plutonium isotopic composition of a sediment core from Palomares, Spain, by low-energy AMS and alpha-spectrometry
(ELSEVIER SCIENCE BV, 2010)
The measurement of plutonium isotopes, 239Pu and 240Pu, at 670 kV on the compact accelerator mass spectrometry (AMS) system at the Centro Nacional de Aceleradores (CNA) in Seville, Spain, is now a reality. In this work, ...
Artículo
Certified reference materials for radionuclides in Bikini Atoll sediment (IAEA-410) and Pacific Ocean sediment (IAEA-412)
(PERGAMON-ELSEVIER SCIENCE LTD, 2016)
The preparation and characterization of certified reference materials (CRMs) for radionuclide content in sediments collected offshore of Bikini Atoll (IAEA-410) and in the open northwest Pacific Ocean (IAEA-412) are described ...
Artículo
Interactions of solitons with a Gaussian barrier : splitting and recombination in quasi-1D and 3D
(2013)
The interaction of matter-wave solitons with a potential barrier is a fundamentally important problem, and the splitting and subsequent recombination of the soliton by the barrier is the essence of soliton matter-wave ...
Artículo
Evaluation of the optoelectronic properties and corrosion behavior of Al2O3-doped ZnO films prepared by dc pulsed magnetron sputtering
(IOPScience, 2014)
he main requirements for transparent conducting oxide (TCO) films acting as electrodes are a high transmission rate in the visible spectral region and low resistivity. However, in many cases, tolerance to temperature and ...
Artículo
Anisotropic in-plane conductivity and dichroic gold plasmon resonance in plasma assisted ITO thin films e-beam evaporated at oblique angles
(American Chemical Society, 2015)
ITO thin films have been prepared by electron beam evaporation at oblique angles (OA), directly and while assisting their growth with a downstream plasma. The films microstructure, characterized by scanning electron ...
Artículo
Radioecological assessment and radiometric dating of sediment cores from dynamic sedimentary systems of Pra and Volta estuaries (Ghana) along the Equatorial Atlantic
(Elsevier, 2017)
The Volta and Pra estuaries (Ghana, West Africa) are dynamical sedimentary systems whose natural equilibrium is being affected by anthropogenic activities. This paper reports depth-distributions of 210Pb, 226Ra, 234Th, ...
Tesis Doctoral
Circuit modeling of periodic structures
(2017-02-06)
In the present dissertation the main goal consists in the derivation of analytical circuit models for di_erent types of 1-D periodic structures by a method based on the integral equation. Thus, in Chapter 1 the techique ...
Artículo
Determination of trace element concentrations and stable lead, uranium and thorium isotope ratios by quadrupole-ICP-MS in NORM and NORM-polluted sample leachates
(Elsevier Science BV, 2012)
This works focus on the monitoring of the potential pollution in scenarios that involves NORM related industrial activities (environmental or in-door scenarios). The objective was to develop a method to determine extent ...