Results 21 to 30 of about 1,983 (261)
Columbite-Group Minerals from New York Pegmatites: Insights from Isotopic and Geochemical Analyses
Geosciences, 2018 Columbite crystals from niobium-yttrium-fluorine (NYF) pegmatites lacking zircon or containing metamict cyrtolite were analyzed for major and minor elements (Electron Microprobe (EMP)), trace elements (Laser Ablation-Inductively Coupled Plasma-Mass ...
Marian V. Lupulescu +4 more
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Simultaneous in situ determination of U‐Pb and Sm‐Nd isotopes in monazite by laser ablation ICP‐MS
Geochemistry, Geophysics, Geosystems, 2014 Results are presented for in situ simultaneous determination of U‐Pb and Sm‐Nd isotopes in monazite using the Laser Ablation Split‐Stream (LASS) method. This method uses a laser ablation system coupled to a magnetic‐sector inductively coupled plasma mass
Dylan J. Goudie +4 more
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Data in Brief, 2020 This paper reports LA-ICP-MS 87Sr/86Sr isotopic data collected from archaeological human remains uncovered in Manzherok region, Altai Republic, Russian Federation (“Mobility of nomads in central Asia: chronology and 87Sr/86Sr isotope evidence from the ...
Dalia A. Pokutta +4 more
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Yankuang ceshi, 2022 BACKGROUND The Wunugetushan copper-molybdenum deposit located in the northwest of the Erguna—Hulun fault is a large porphyry copper-molybdenum deposit. Magmatic rocks are widespread in the mining area. OBJECTIVES In order to determine the emplacement age
ZHANG Xuejun +6 more
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In situ boron isotope measurements of natural geological materials by LA-MC-ICP-MS
Chinese Science Bulletin, 2010 There are two main methods to determine boron isotopic composition. One is the solution method, in which boron is purified after the samples are dissolved in solution and the boron isotope ratios are determined by thermal ionization mass spectrometry (P-TIMS and N-TIMS) or multicollector inductively coupled plasma mass spectrometry (MC-ICP-MS).
KeJun Hou +4 more
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Advanced Functional Materials, EarlyView.A low‐Pt catalyst supported on zeolitic imidazolate framework (ZIF‐8)‐derived porous carbon and graphite is integrated with a halide perovskite photovoltaic, yielding cathodes that achieve a high photocurrent density (∼20 mA cm−2) under simulated sunlight and exhibit remarkable stability in acidic media over several days, thereby demonstrating a ...
Na Yeong Oh +12 more
wiley +1 more source
High Spatial Resolution U-Pb Dating of Low-Uranium Calcite Using LA-MC-ICP-MS
Yankuang ceshiThe combination of carbonate minerals with the U-Pb isotope dating system provides direct temporal constraints for geoscientific applications. LA-MC-ICP-MS with its high sensitivity and accuracy, has been successfully applied to the high spatial ...
Chenxi ZHANG +8 more
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Atmosphere, 2018 Two peat cores from two bogs were used to record changes in the atmospheric Pb accumulation rate (Pb AR) in Belgium during the Roman period. The two records were compared to assess the reliability of peat cores as archives of atmospheric Pb deposition ...
Mohammed Allan +5 more
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Evaluation of UV-fs-LA-MC-ICP-MS for Precise in situ Copper Isotopic Microanalysis of Cubanite
Analytical Sciences, 2013 We evaluated the capabilities of an in situ method for measuring copper isotopes of cubanite using UV-fs-LA-MC-ICP-MS. A comparison of the UV-fs laser results with those obtained from the NIR-fs laser system shows that there is obviously an improvement in the precision (
IKEHATA, Kei, HIRATA, Takafumi
openaire +3 more sources
Ferroelectric Polarization Enabled Threshold Voltage Modulation in High Electron Mobility Transistor
Advanced Functional Materials, EarlyView.A comprehensive model is developed to capture the coupled electrostatics of a ferroelectric capacitor and a metal‐insulator‐semiconductor high electron mobility transistor (MISHEMT) connected in ferroelectric‐metal high electron mobility transistor (FeMHEMT) configuration.
Wentian Gao +4 more
wiley +1 more source