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461
Use of N Natural Abundance and N Species Concentrations to Assess N-Cycling in Constructed and Natural Coastal Wetlands
Published 2010-01-01“…Natural abundance of N stable isotopes used in combination with concentrations may be useful indicators of N-cycling in wetlands. …”
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462
PEROVSKITE FROM SPURRITE-MERWINITE MARBLES OF THE KOCHUMDEK CONTACT AUREOLE: APPLICATION TO U-Pb DATING OF A THERMAL EVENT
Published 2022-06-01“…Perovskite is the main host for Th (up to 1550 ppm), U (up to 450 ppm), Ti, Zr, and LREEs (La + Ce + Pr + Nd); the element incorporation ratios are KTh = 516–870 and КU = 374. The U-Pb isotopic age of perovskite of 248.0 ± 7.2 Ma is in agreement with isotopic age values of traps of the Kuz’movsky complex.…”
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463
Decomposition Analysis of Void Reactivity Coefficient for Innovative and Modified BWR Assemblies
Published 2014-01-01“…The obtained results indicate the influence of the most important isotopes to the void reactivity behaviour over a fuel burnup interval of 70 GWd/t for both UO2 and MOX fuels. …”
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464
Development of simplified treatment methods for removal of Ra-226 and Ra-228 from sludge waste produced in natural gas processing plants
Published 2025-02-01“…The study proved that removing radium isotopes is increased by elevating the reagents concentration and sludge temperature. …”
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465
Methane-rich gas emissions from natural geologic seeps can be chemically distinguished from anthropogenic leaks
Published 2025-01-01“…Since the gas from these two sources can exhibit similar isotopic compositions, differentiating them using atmospheric observations is often challenging. …”
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466
Closed Fuel Cycle and Minor Actinide Multirecycling in a Gas-Cooled Fast Reactor
Published 2009-01-01“…The GCFR targets sustainability, which is achieved by the use of a closed nuclear fuel cycle where only fission products are discharged to a repository; all Heavy Metal isotopes are to be recycled in the reactor. In this paper, an overview is presented of recent results obtained in the study of the closed fuel cycle and the influence of the addition of extra Minor Actinide (MA) isotopes from existing LWR stockpiles. …”
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467
The Effect of Water Chemistry on Thermochemical Sulfate Reduction: A Case Study from the Ordovician in the Tazhong Area, Northwest China
Published 2017-01-01“…Formation water chemistry, sulfate sulfur isotopes, and associated H2S contents and sulfur isotopes were measured from the Ordovician in Tazhong area, Tarim Basin. …”
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468
Taphonomy as a Methodological Approach for the Study of Dog Domestication: Application to the Prehistoric Site of Peña Moñuz (Guadalajara, Spain)
Published 2025-01-01“…To address the questions related to the domestication process, researchers have employed a wide range of methodologies, including genetic, biomolecular, morphometric, paleontological, biometric, and isotopic analyses, as well as dental wear analysis to reconstruct paleodiets. …”
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469
Early Devonian Slab Melting of the Proto-Tethys Ocean: Insights from Adakitic Granitoids in the Jiayuguan Area, Hexi Corridor (NW China)
Published 2024-12-01“…Their incompatible Hf and Nd isotopes could be caused by contamination between the source magma and continental crust during the emplacement processes. …”
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470
Searching for incinerating the accumulated plutonium around the world by mixing it with thorium and using this mixture as a nuclear fuel in the CANDU-6
Published 2025-01-01“…This work investigates the possibility of getting rid of the accumulated plutonium around the world by mixing it with fertile materials and using it as a nuclear fuel for CANDU-6. Using plutonium isotopes with thorium as a nuclear fuel for CANDU-6 is a means of preventing the production of other Pu isotopes. …”
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471
Metals in Fishes from Yongshu Island, Southern South China Sea: Human Health Risk Assessment
Published 2017-01-01“…Metals and stable Pb isotopes in their tissues (muscle, gill, liver, intestine, and ovary) were determined. …”
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472
Explicit geodesic flow-invariant distributions using SL2(ℝ)-representation ladders
Published 2005-01-01“…An explicit construction of a geodesic flow-invariant distribution lying in the discrete series of weight 2k isotopic component is found, using techniques from representation theory of SL2(ℝ). …”
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473
Antineutrino Flux from the Laguna Verde Nuclear Power Plant
Published 2015-01-01“…We present a calculation of the antineutrino flux produced by the reactors at the Laguna Verde Nuclear Power Plant in México, based on the antineutrino spectra produced in the decay chains of the fission fragments of the main isotopes in the reactor core, and their fission rates, which have been calculated using the DRAGON simulation code. …”
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474
Laboratory Measurement of CH317OH Transitions in the Frequency Range from 216 to 264 GHz for Astronomical Application
Published 2025-01-01“…The ^12 CH _3 ^17 OH line data allow us to trace and constrain the isotopic ratio ^17 O/ ^18 O in methanol, which is efficient to investigate the galactic-scale evolution of elements. …”
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475
∆E/∆E Measurements of Energetic Ions Using CVD Diamond Detectors
Published 2018-01-01“…In addition, simulations have demonstrated the ability to identify hydrogen isotopes using a diamond detection system.…”
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476
Cattle on the rocks: Understanding cattle mobility, diet, and seasonality in the Iberian Peninsula. The Middle Neolithic site of Cova de les Pixarelles (Tavertet, Osona).
Published 2025-01-01“…This study uses bulk bone collagen carbon (δ13Ccoll) and nitrogen (δ15N) isotopes, and sequential analysis of enamel bioapatite oxygen (δ18O) and carbon (δ13Ccarb) isotopes to further enhance our understanding of animal management practices during the Middle Neolithic, providing new insights on the diet, mobility and reproduction patterns of cattle. …”
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477
Potential Use of Bone Charcoal in the Removal of Antimony and Europium Radioisotopes from Radioactive Wastes
Published 1997-09-01“…Physical sorption was suggested to be the main mechanism operating for radioantimony isotopes with appreciably higher fixation on the sorbent when loaded from the liquid organic radwaste. …”
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478
Assessment of contamination of natural waters with radionuclides and heavy metals the case of Karabulak creek at the Semipalatinsk Test Site.
Published 2025-01-01“…This paper presents research data on water contamination levels of artificial radionuclides and heavy metals in Karabulak Creek at the Semipalatinsk Test Site. The uranium isotopic composition has been studied (235U and 238U). …”
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479
Low presence of potentially toxic elements in Singapore urban garden soils
Published 2022-09-01“…We also perform providence tracking with lead isotopes to identify potential sources of contaminants. …”
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480
Understanding water reaction pathways to control the hydrolytic reactivity of a Zn metal-organic framework
Published 2024-12-01Get full text
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