Física Aplicada I: Envíos recientes
Mostrando ítems 301-320 de 890
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Pre- and post-Chernobyl accident levels of I-129 and Cs-137 in the Southern Baltic Sea by brown seaweed Fucus vesiculosus
(Elsevier, 2013)129I is a very long-lived radionuclide (T1/2 = 15.7 × 106 years) that is present in the environment both because of natural ...
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Implications for food safety of the uptake by tomato of 25 trace-elements from a phosphogypsum amended soil from SW Spain
(Elsevier, 2014)Phosphogypsum (PG) has been usually applied as Ca-amendment to reclaim sodic soils such as those in the marshland area of ...
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Fallout 210Pb as a soil and sediment tracer in catchment sediment budget investigations: A review
(Elsevier, 2014)Increasing anthropogenic pressures coupled with climate change impacts on natural resources have promoted a quest for ...
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Evidence that excess 210Pb flux varies with sediment accumulation rate and implications for dating recent sediments
(Springer, 2014)Most 210Pb dating models assume that atmospheric flux of excess 210Pb (210Pbexc) to the sediment–water interface remains ...
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Why would we use the Sediment Isotope Tomography (SIT) model to establish a 210Pb-based chronology in recent-sediment cores?
(Elsevier, 2015)After half a century, the use of unsupported 210Pb ( 210Pbexc) is still far off from being a well established dating tool ...
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Levels of 25 trace elements in high-volume air filter samples from Seville (2001–2002): Sources, enrichment factors and temporal variations
(Elsevier, 2015)The measurement of trace element concentration in aerosols is of interest for environmental studies and for human health ...
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A 210Pb-based chronological model for recent sediments with random entries of mass and activities: Model development
(Elsevier, 2016)Unsupported 210Pb (210Pbexc) vs. mass depth profiles do not contain enough information as to extract a unique chronology ...
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Settling fluxes and sediment accumulation rates by the combined use of sediment traps and sediment cores in Tema Harbour (Ghana)
(Elsevier, 2017)Settling fluxes and sediment accumulation rates in coastal Tema Harbour (Ghana) were investigated by the combined analyses ...
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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 ...
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Impact of gold-mining activity on trace elements enrichment in the West African estuaries: The case of Pra and Ankobra rivers with the Volta estuary (Ghana) as the reference
(Elsevier, 2018)This study aimed at assessing trace element concentrations in two representative estuaries of Ghana (Pra and Ankobra) ...
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Experimental study on the use of granulometric speciation for the radiometric dating of recent sediments
(Elsevier, 2019)Theoretical and experimental studies have shown that activity concentrations of fallout radionuclides (such as 137Cs and ...
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Multimodal-TERESA, a 210Pb-based radiometric dating model for recent sediments under largely varying rates of supply
(Elsevier, 2020)Lead-210 from natural atmospheric fallout is widely used in multidisciplinary studies for dating recent sediments. In ...
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Estudio arqueoastronómico de las iglesias de la Asunción en los poblamientos cristianos tras la reconquista de las provincias de Córdoba y Soria
(Real Academia de Córdoba, 2020)Estudiamos la orientación de las iglesias de la Asunción en Soria (N=73). El grupo del románico de repoblación (N=45, ...
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Environmental radioactivity in a sediment core from Algiers Bay: Radioecological assessment, radiometric dating and pollution records
(Elsevier, 2020)The sedimentary system of the Algiers Bay has been impacted in the last decades by the exponential increases in population, ...
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Environmental radioactivity and trace metals in surficial sediments from estuarine systems in Ghana (Equatorial Africa), impacted by artisanal gold-mining
(Elsevier, 2020)This paper reports concentrations of γ-emitter radionuclides (40K, 137Cs, 210Pb, 226Ra, 228Ra, 228Th and 234Th) and some ...
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Fine-tuning of Pb-210-based methods for dating vegetated saltmarsh sediments
(Elsevier, 2021)Saltmarshes, wetlands, inter-tidal mudflats are highly productive natural ecosystems with significant ecological value. ...
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Roadmap on metasurfaces
(IOP Publishing, 2019)Metasurfaces are thin two-dimensional metamaterial layers that allow or inhibit the propagation of electromagnetic waves ...
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Assessment of metal levels and pollution indices of the Songor Wetland, Ghana
(Elsevier, 2021)Sediment, soil and fish samples collected from the Songor Wetland were assessed for the spatial distributions of metal (Al, ...
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Modelling the kinetic reactive transport of pollutants at the sediment-water interface. Applications with atmospheric fallout radionuclides
(Elsevier, 2022)Understanding the behaviour of particulate matter and chemicals at the sediment-water interface (SWI) is of interest in ...
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Depth-distributions and migration of fallout radionuclides in mountain soils from Chr´ea National Park (Algeria): The role of rhizospheres
(Elsevier, 2022)The distribution and migration of artificial fallout radionuclides in natural soils has been profusely studied for assessing ...