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Mostrando ítems 201-210 de 231
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Geometry-assisted topological transitions in spin interferometry
(American Physical Society, 2019)
We identify a series of topological transitions occurring in electronic spin transport when manipulating spin-guiding fields controlled by the geometric shape of mesoscopic interferometers. They manifest as distinct ...
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Thermodynamical cost of some interpretations of quantum theory
(PRA, 2016)
The interpretation of quantum theory is one of the longest-standing debates in physics. Type I interpretations see quantum probabilities as determined by intrinsic properties of the observed system. Type II see them as ...
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Design of Broadband Aperture-Coupled Stacked Microstrip Antennas Using Second-Order Filter Theory
(IEEE, 2022-07)
In this article, the authors propose a lumped circuit methodology for the design of broadband stacked microstrip patch antennas fed through an aperture. First, an equivalent circuit (EC) is introduced for the antenna. The ...
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Simulated acoustic field in mudejar-gothic churches
(Acoustical Society of America, 1999)
In this work we have undertaken an acoustic simulation of the sound field in several churches in the city of Seville. The simulation has been carried out through the RAYNOISE program and has been based on the reverberation ...
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Optimization of a new liquid scintillation spectrometer for the measurement of environmental levels of 3H in water samples
(Elsevier, 2024-07)
The activity concentration of 3H in water samples collected from places unaffected by nuclear activities or for human consumption can be very low. In these cases, determination procedures must achieve a Minimum Detectable ...
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A dosimetric model for determining the effectiveness of soil covers for phosphogypsum waste piles
(Lippincott, 2001)
Phosphogypsum (PG) is a by-product of the phosphoric acid production process that contains high concentrations of U-series radionuclides. PG piles formed during the last 30 years cover about 1,200 hectares and are located ...
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A short-time method to measure the radon potential of porous materials
(Elsevier, 2009)
The radiological risk associated with the use of solid materials has been traditionally established according to their radon exhalation rates, the accumulation chamber technique being the most widely used for the ...
Artículo
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A comparison of 210Pbxs, 137Cs, and Pu isotopes as proxies of soil redistribution in South Spain under severe erosion conditions
(Springer, 2023-06-01)
Purpose The use of fallout radionuclides as proxies for the study of soil redistribution processes in semiarid environments of Southern Spain has been restricted to 137Cs. The potential and limitations of alternative ...
Artículo
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Radioactive impact in sediments from an estuarine system affected by industrial wastes releases
(Elsevier, 2002)
A big fertilizer industrial complex and a vast extension of phosphogypsum piles (12 km2), sited in the estuary formed by the Odiel and Tinto river mouths (southwest of Spain), are producing an unambiguous radioactive ...
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A simple method for efficiency calibration of HPGe detectors in gamma-spectrometric measurements
(Elsevier, 2001)
In this paper a simple, rapid and general method for g-ray efficiency calibration of Ge detectors for environmental samples is presented. This method is based on the use of an active natural solid sample with several ...