Results 21 to 30 of about 3,983 (257)

Isotopic Inventory and Activity Calculations of Fukushima Daiichi Unit-1 Accident [PDF]

Arab Journal of Nuclear Sciences and Applications, 2021
Nuclear characterization of the spent nuclear fuel in a reactor core is essential, especially in case of severe accidents. The radionuclide inventory and its activity can assist in the management of spent fuel handling, transport, or reprocessing. In this paper, the core of the Fukushima Daiichi Unit-1(FD-U1) accident was modeled using the Monte Carlo
Rowayda Mahmoud, Mohamed Abdu, Mohamed Shaat   +2 more
openaire   +1 more source

Low temperature hydrogen superpermeation in vanadium composite metal foil pumps

Nuclear Materials and Energy, 2023
Palladium-based foil membranes are an effective option for hydrogen isotope recovery from the plasma exhaust of future fusion plants, but cost and availability are concerns.
Chao Li, J. Douglas Way, Thomas F. Fuerst, Colin A. Wolden   +3 more
doaj   +1 more source

Quantification of methane emissions in Hamburg using a network of FTIR spectrometers and an inverse modeling approach [PDF]

Atmospheric Chemistry and Physics, 2023
Methane (CH4) is a potent greenhouse gas, and anthropogenic CH4 emissions contribute significantly to global warming. In this study, the CH4 emissions of the second most populated city in Germany, Hamburg, were quantified with measurements from four ...
A. Forstmaier, J. Chen, F. Dietrich, J. Bettinelli, H. Maazallahi, H. Maazallahi, C. Schneider, C. Schneider, D. Winkler, X. Zhao, T. Jones, C. van der Veen, N. Wildmann, M. Makowski, A. Uzun, F. Klappenbach, H. Denier van der Gon, S. Schwietzke, T. Röckmann   +18 more
doaj   +1 more source

Stable isotope research pool inventory [PDF]

, 1981
This report contains a listing of electromagnetically separated stable isotopes which are available for distribution within the United States for non-destructive research use from the Oak Ridge National Laboratory on a loan basis. This inventory includes all samples of stable isotopes in the Materials Research Collection and does not designate whether ...
openaire   +2 more sources

Stable isotope research pool inventory [PDF]

, 1988
This report contains a listing of electromagnetically separated stable isotopes which are available at the Oak Ridge National Laboratory for distribution for nondestructive research use on a loan basis. This inventory includes all samples of stable isotopes in the Research Materials Collection and does not designate whether a sample is out on loan or ...
openaire   +2 more sources

Characterisation of methane sources in Lutjewad, The Netherlands, using quasi-continuous isotopic composition measurements

Tellus: Series B, Chemical and Physical Meteorology, 2020
Despite the importance of methane for climate change mitigation, uncertainties regarding the temporal and spatial variability of the emissions remain. Measurements of CH4 isotopic composition are used to partition the relative contributions of different ...
Malika Menoud, Carina van der Veen, Bert Scheeren, Huilin Chen, Barbara Szénási, Randulph P. Morales, Isabelle Pison, Philippe Bousquet, Dominik Brunner, Thomas Röckmann   +9 more
doaj   +1 more source

Nitrogen isotope fractionation during gas-to-particle conversion of NO_x to NO₃⁻ in the atmosphere – implications for isotope-based NO_x source apportionment [PDF]

Atmospheric Chemistry and Physics, 2018
Atmospheric fine-particle (PM2.5) pollution is frequently associated with the formation of particulate nitrate (pNO3−), the end product of the oxidation of NOx gases (NO + NO2) in the upper troposphere.
Y. Chang, Y. Chang, Y. Chang, Y. Zhang, Y. Zhang, Y. Zhang, C. Tian, S. Zhang, X. Ma, F. Cao, F. Cao, F. Cao, X. Liu, X. Liu, X. Liu, W. Zhang, W. Zhang, W. Zhang, T. Kuhn, M. F. Lehmann   +19 more
doaj   +1 more source

The proto-Earth geo-reactor: Reassessing the hypotheses

Solid Earth Sciences, 2016
Recent high-precision isotope analysis data could be used to revisit the hypothetical past occurrence of a geo-reactor. Specific noble gas isotope signatures that could be generated by binary and ternary fissions were identified in volcano emanations or ...
Claude Degueldre, Carlo Fiorina
doaj   +1 more source

Ground-ice origin and age on Herschel Island (Qikiqtaruk), Yukon, Canada

Quaternary Science Advances, 2023
Glacial legacies preserved in permafrost such as buried glacial ice of the last ice age are of increasing concern in the Western Canadian Arctic. Permafrost collapse due to melting ground ice largely follows the margins of the maximum Laurentide Ice ...
Sebastian Wetterich, Alexander I. Kizyakov, Thomas Opel, Hendrik Grotheer, Gesine Mollenhauer, Michael Fritz   +5 more
doaj   +1 more source

Palladacarboxamide Capping Reagents for Carbon Isotope Labeling and Pharmaceutical Diversification

Angewandte Chemie, EarlyView.
Herein, we present a method for carbon isotope labeling of arylamides via the coupling of air‐stable palladium carboxamide complexes and boronic ester/acids. A wide variety of functionalized boronic esters and acids have been coupled with simple palladium carboxamides complexes.
Daniel V. Hoffmann, Anika Schick, Lasse Kjær, Vitus J. Enemærke, Clemens Kaussler, Jens Torp, Pablo Martínez‐Pardo, Charles S. Elmore, Troels Skrydstrup   +8 more
wiley   +2 more sources