Search results for "pluto"

Abstract The Transactinide Separator and Chemistry Apparatus (TASCA) is a recoil separator with maximized transmission designed for performing advanced chemical studies as well as nuclear reaction and structure investigations of the transactinide elements ( Z >103) on a one-atom-at-a-time basis. TASCA will provide a very clean transactinide fraction with negligible contamination of lighter elements from nuclear side reactions in the target. For TASCA a new target chamber was designed and built at GSI including the rotating target wheel assembly ARTESIA for beam intensities up to 2 μA (particle). For the production of longer-lived isotopes of neutron-rich heavier actinide and transactinide e…

LanthanidePhysicsNuclear and High Energy PhysicsCuriumAnalytical chemistrychemistry.chemical_elementThoriumTransactinide elementActinideUraniumPlutoniumchemistryNuclear fusionInstrumentationNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

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Zvaigžņotā Debess: 2013/14, Ziema (222)

2013

Latvijas Universitāte

Linards Reiziņš1952. gada diplomandi LVU astronomijas:NATURAL SCIENCES::Physics::Astronomy and astrophysics::Astronomy [Research Subject Categories]Stendera “Augstas gudrības grāmata” – astronomijas terminiMarss – ūdens meklējumiPlutona pavadoņiLU Astronomijas institūts 2012.gadāAstronomiskās parādības 2014Starptautiskās Astronomijas Savienības XXVIII Ģenerālā Asambleja PekināPlanētu redzamības kompleksā diagramma 2014Kuģa Ķīļa miglājs – ALMA’s panorāmaKazimirs Lapuška (1936-2013)Vulkāns Cerbers StiksaVerners Heizenbergs – par humanitāro izglītību un dabaszinātnēmBumeranga MiglājsLatvijas 63. matemātikas olimpiāde – uzdevumu atrisinājumiDebess spīdekļi – 2013/14. gada ziemaAstronomijas studijas ārzemēsZvaigžņu tēma mākslā – dzeja un zīmējumiBora atommodelisALMA – pēdējā antenaLatvijas 38. atklātā fizikas olimpiādeKaķa Ķepas miglājs – uzņēmums ar ESO APEX teleskopu un ArTeMiS kameruTitāns – Saturna pavadonisRiekstu kalna apkaimeEiropas žurnālistikas balva astronomijā 2013Jurijs FrancmanisBetlēmes zvaigzneSaules pulksteņi Mārsnēnos un Ķegumā

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Risk of Lung Cancer Mortality in Nuclear Workers from Internal Exposure to Alpha Particle-emitting Radionuclides

2017

Supplemental Digital Content is available in the text.

MaleLung NeoplasmsEpidemiology[SDV]Life Sciences [q-bio]chemistry.chemical_elementRadonSubstàncies radioactivesExtraction and Processing Industry030218 nuclear medicine & medical imaging03 medical and health sciences0302 clinical medicineBelgiumRisk FactorsEnvironmental healthOccupational ExposureMortalitatMedicineHumansLung Neoplasms/mortality; Neoplasms Radiation-Induced/mortality; Occupational Diseases/mortality; Radiation Exposure/adverse effectsMortalityLung cancerRadiometryCarcinogenCancerAgedRadionuclidebusiness.industryAlpha particleMiddle Agedmedicine.diseaseAlpha ParticlesPlutoniumUnited Kingdom3. Good healthchemistry030220 oncology & carcinogenesisCase-Control StudiesComputingMethodologies_DOCUMENTANDTEXTPROCESSINGCàncer de pulmóUraniumFemaleOccupational exposureFranceLung cancerbusinessNuclear medicineRadioactive substances

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Understanding and Predicting Plutonium Alloys Aging: A Coupled Experimental and Theoretical Approach

2003

Understanding plutonium aging is a real challenge that requires developing very ambitious modeling and experiments. Examples of the different techniques developed and the physical values that can be reached are presented here.

Materials sciencechemistryRadiochemistrychemistry.chemical_elementBiochemical engineeringCalculation methodsPlutoniumAIP Conference Proceedings

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Application of isotope-dilution laser ablation ICP-MS for direct determination of Pu concentrations in soils at pg g(-1) levels.

2003

The methods available for determination of environmental contamination by plutonium at ultra-trace levels require labor-consuming sample preparation including matrix removal and plutonium extraction in both nuclear spectroscopy and mass spectrometry. In this work, laser-ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) was applied for direct analysis of Pu in soil and sediment samples. Application of a LINA-Spark-Atomizer system (a modified laser ablation system providing high ablation rates) coupled with a sector-field ICP-MS resulted in detection limits as low as 3x10(-13) g g(-1) for Pu isotopes in soil samples containing uranium at a concentration of a few microg g(-1). …

Matrix (chemical analysis)Detection limitchemistryAnalytical chemistrychemistry.chemical_elementSample preparationIsotope dilutionUraniumMass spectrometryBiochemistryInductively coupled plasma mass spectrometryAnalytical ChemistryPlutoniumAnalytical and bioanalytical chemistry

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Geometric aspects of synkinematic granite intrusion into a ductile shear zone — an example from the Yunmengshan core complex, northern China

2005

The Cretaceous Yungmengshan core complex in northern China contains a large syntectonic granodiorite batholith that intrudes a slightly older diorite intrusion. A major gently dipping ductile decollement shear zone is developed along the contact of the diorite and granodiorite. The shear zone is invaded by a large volume of granitic and pegmatite veins associated with the main granodiorite batholith during activity of the shear zone under high-grade metamorphic conditions. Progressively older veins are more strongly deformed into tight cylindrical fold structures rotated into parallelism with the lineation and foliation in the shear zone. Parallelism of veins to the foliation is partly due …

Metamorphic core complexPlutonGeochemistryGeologyOcean EngineeringDioriteBatholithThrust faultShear zoneGeologyMetamorphic faciesSeismologyWater Science and TechnologyMyloniteGeological Society, London, Special Publications

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Geochemical Interactions of Plutonium with Opalinus Clay Studied by Spatially Resolved Synchrotron Radiation Techniques

2017

Plutonium plays an important role within nuclear waste materials because of its long half-life and high radiotoxicity. The aim of this study was to investigate with high spatial resolution the reactivity of the more oxidized forms of Pu(V,VI) within Opalinus Clay (OPA) rock, a heterogeneous, natural argillaceous rock considered as a potential repository host. A combination of synchrotron based X-ray microprobe and bulk techniques was used to study the spatial distribution and molecular speciation of Pu within OPA after diffusion and sorption processes. Microscopic chemical images revealed a pronounced impact of geochemical heterogeneities concerning the reactivity of the natural barrier mat…

MicroprobeAbsorption spectroscopyMineralogychemistry.chemical_elementSynchrotron radiation010501 environmental sciences010403 inorganic & nuclear chemistry01 natural scienceslaw.inventionPlutonium opalinus clay sorption XAS ROBLlawEnvironmental ChemistryDiffusion (business)0105 earth and related environmental sciencesChemistryRadioactive wasteSorptionGeneral ChemistryPlutoniumSynchrotron0104 chemical sciencesPlutoniumRadioactive WasteClayAluminum SilicatesSynchrotronsEnvironmental Science & Technology

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