Search results for "Dispersive spectrometry"

showing 3 items of 3 documents

A radiometric and petrographic interpretation of discrepancies on uranium content in samples collected at Alte Madonie Mounts region (Sicily, Italy)

2013

Abstract The main goal of this work is to evaluate a correlation between anomalous Uranium (U) content and petrographic features of some soil and rock samples collected at Alte Madonie Mounts region (North-central Sicily, Italy). A total of 41 samples of selected soils and rocks were collected, powdered, dried and sealed in “Marinelli” beakers for 20 days before the measurement to ensure that radioactive equilibrium between 226 Ra and 214 Bi was reached. Gamma-ray spectrometric analysis was used to quantify radioactivity concentrations. Mineralogical and chemical features of the samples were determined by X-ray Fluorescence (XRF), X-ray Diffractometry (XRD), Attenuated Total Reflection-Four…

Geological PhenomenaSettore ING-IND/20 - Misure E Strumentazione NucleariHealth Toxicology and MutagenesisAnalytical chemistryMineralogyX-ray fluorescencechemistry.chemical_elementPetrographyRadiation MonitoringSoil Pollutants RadioactiveEnvironmental ChemistryRadiometryWaste Management and DisposalGamma ray spectrometryRadioisotopesSettore GEO/07 - Petrologia E PetrografiaGeneral MedicineUraniumPollutionSpectrometry GammaItalychemistryEnvironmental radioactivity Radiation monitoring Gamma-ray spectrometry X-rayfluorescence X-ray diffractometryEnergy dispersive spectrometrySoil waterUraniumEnvironmental radioactivityEnvironmental scienceRadiometric datingBismuthJournal of Environmental Radioactivity
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Flash microwave synthesis of trevorite nanoparticles.

2008

Nickel ferrite nanoparticles have several possible applications as cathode materials for rechargeable batteries, named 'lithium-ion' batteries. In this study, NiFe{sub 2}O{sub 4} was prepared by microwave induced thermohydrolysis. The obtained nanoparticles were characterized by scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), BET method, transmission electron microscopy (TEM) and small angle X-ray scattering (SAXS). All the results show that the microwave one-step flash synthesis leads in a very short time to NiFe{sub 2}O{sub 4} nanoparticles with elementary particles size close to 4-5 nm, and high specific surfaces (close to 240 m…

Materials scienceNanostructureScanning electron microscopeXRDAnalytical chemistryNanoparticle02 engineering and technology010402 general chemistry01 natural sciences7. Clean energyNanomaterialsInorganic ChemistryMaterials ChemistryIron oxideFerritesPhysical and Theoretical ChemistryNickel oxideX-ray spectroscopySmall angle X ray scatteringParticle sizeDispersive spectrometryLithium batteryNanostructured materials021001 nanoscience & nanotechnologyCondensed Matter Physics0104 chemical sciencesElectronic Optical and Magnetic MaterialsElectrode materialMicrowave heatingOrganic conductorsX-ray crystallographyCeramics and CompositesFerrite (magnet)NanoparticlesNiFe2O40210 nano-technologyScanning electron microscopyMicrowaveTransmission electron microscopyNanomaterial synthesis
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Archaeometric Characterisation of Decorated Pottery from the Archaeological Site of Villa dei Quintili (Rome, Italy): Preliminary Study

2019

This work focused on the study of decorated pottery dated back to the 16th century from the Roman archaeological site of Villa dei Quintili, a monumental complex located in the south-eastern part of Rome (Italy). A minero-petrographic and geochemical study was undertaken to analyse five archaeological samples in order to define textural features and raw materials used for their production, along with the chemical and physical composition of the superficial decorative glazed coatings. For this purpose, different analytical methods were used, such as polarising optical microscope (POM), X-ray diffraction (XRD), micro-Raman spectroscopy, X-Ray fluorescence (XRF), and electron microprobe analys…

media_common.quotation_subject02 engineering and technologypetrographyPetrographyMajolica0601 history and archaeologymicro-Raman spectroscopySettore GEO/09 -Georis. Miner.e Appl.Mineral.-Petrogr. per l'Ambi.ed i B.Cult.Decorative glazed coatingmedia_common060102 archaeologyDecorative glazed coatings EMPA-EDS Micro-Raman spectroscopy Petrography Potterylcsh:QE1-996.5EMPA-EDSThe Renaissance06 humanities and the artsArtpottery021001 nanoscience & nanotechnologyArchaeologyMicro raman spectroscopylcsh:GeologyEnergy dispersive spectrometrydecorative glazed coatingsGeneral Earth and Planetary SciencesPottery0210 nano-technologyEarth and Planetary Sciences (all)
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