Física Aplicada I: Envíos recientes
Mostrando ítems 61-80 de 890
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Radioactivity levels in aerosol particles surrounding a large TENORM waste repository after application of preliminary restoration work
(Elsevier Science BV, 2007)In this paper, 238U-series radionuclides have been analysed in particulate matter samples collected at a phosphogypsum ...
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Determination of U-234/U-238 isotope ratios in environmental waters by quadrupole ICP-MS after U stripping from alpha-spectrometry counting sources
(SPRINGER; SPRINGER HEIDELBERG, 2006)The 234U/238U isotope ratio has been widely used as a tracer for geochemical processes in underground aquifers. Quadrupole-based ...
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Determination of 210Po in low-level wild bilberries reference material for quality control assurance in environmental analysis using extraction chromatography and α-particle spectroscopy
(Walter de Gruyter GmbH, 2020)Certified reference materials (CRM) are being widely used for quality control assurance in environmental analysis. For ...
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A sequential determination of Sr-90 and Po-210 in food samples
(ELSEVIER SCI LTD, 2017)The latest EU Council Regulation 2016/52/Euratom updates the emergency limits on radionuclides in foods including 210Po ...
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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 ...
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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 ...
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External radiation assessment in a wet phosphoric acid production plant
(PERGAMON-ELSEVIER SCIENCE LTD, 2009)The factories dedicated to the production of phosphoric acid by the so-called wet acid method are usually considered typical ...
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A comparison between active and passive techniques for measurements of radon emanation factors
(PERGAMON-ELSEVIER SCIENCE LTD, 2009)Some radon related parameters have been determined through two different techniques (passive and active) in soil and ...
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Overcoming ICP-QMS instrumental limitations for Tc-99 determination in environmental solid samples using radiochemistry
(PERGAMON-ELSEVIER SCIENCE LTD, 2006)Besides its capabilities, quadrupole-based ICP-MS counting establishes several limitations on 99Tc analysis in environmental ...
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Rhenium measurements on North Atlantic seaweed samples by ID-ICP-MS: An observation on the Re concentration factors
(Springer, 2005)The estimation of the Re concentration factor (CF) has been carried out to provide additional field information on the ...
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Radioactivity of phosphogypsum in the south-west of Spain
(OXFORD UNIV PRESS, 1998)Phosphogypsum is the by-product of producing phosphoric acid by reacting phosphate rock with sulphuric acid. In the ...
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Method for the detection of Tc in seaweed samples coupling the use of Re as a chemical tracer and isotope dilution inductively coupled plasma mass spectrometry
(Elsevier Science BV, 2004)The analysis of artificial radionuclide 99Tc in environmental samples requires of a chemical separation due to its low ...
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Development and operational performance of a single calibration chamber for radon detectors
(Elsevier Science BV, 2007)This work shows the design, setup and performance of a new single radon detector calibration chamber developed at the ...
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An assay on the effect of preliminary restoration tasks applied to a large TENORM wastes disposal in the south-west of Spain
(Elsevier Science BV, 2006)A large industrial wastes disposal site, where two phosphate rock processing plants release their wastes, located close ...
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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 ...
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Separation and measurement of Pa, Th and U isotopes in marine sediments by microwave-assisted digestion and MC ICP-MS
(AMER CHEMICAL SOC, 2009)This manuscript describes a new protocol for determination of Pa/Th/U in marine sediments. Based on microwave-assisted ...
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Behaviour and fluxes of natural radionuclides in the production process of a phosphoric acid plant
(PERGAMON-ELSEVIER SCIENCE LTD, 2009)In recent years there has been an increasing awareness of the occupational and public hazards of the radiological impact ...
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Voltage Quality Factor for Networks Supplying Unbalanced Nonlinear Loads
(European Association for the Development of Renewable Energy, Environment and Power Quality (EA4EPQ), 2005)While the common term for describing the harmonic content and the unbalanced loading of the three-phase supply is power ...
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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 ...
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Lattice vibration modes and electron–phonon interactions in monolayer vs. bilayer of transition metal dichalcogenides
(Royal Society of Chemistry, 2024-02)Transition metal dichalcogenides are at the center of intense scientific activity due to their promising applications, as ...