Results 11 to 20 of about 604,232 (350)

Theoretical and Numerical Study on Electrical Resistivity Measurement of Cylindrical Rock Core Samples Using Perimeter Electrodes

open access: yesEnergies, 2021
The estimation of hydraulic and mechanical properties of bedrock is important for the evaluation of energy-related structures, including high-level nuclear waste repositories, hydraulic fracturing wells, and gas-hydrate production wells.
Ji-Won Kim   +3 more
doaj   +1 more source

Ensemble Learning Approach for the Prediction of Quantitative Rock Damage Using Various Acoustic Emission Parameters

open access: yesApplied Sciences, 2021
Monitoring rock damage subjected to cracks is an important stage in underground spaces such as radioactive waste disposal repository, civil tunnel, and mining industries.
Hang-Lo Lee   +3 more
doaj   +1 more source

Cs Extraction from Chloride Media by Calixarene Crown-Ethers

open access: yesEnergies, 2022
Asse II salt mine, in Germany, contains low and intermediate-level radioactive waste that must be retrieved in the upcoming years. Potentially contaminated salts and brines will require treatment, with 137Cs being the main contaminant. Cs+ is problematic
Marie Simonnet   +3 more
doaj   +1 more source

How well suited are current thermodynamic models to predict or interpret the composition of (Ba,Sr)SO4 solid-solutions in geothermal scalings?

open access: yesGeothermal Energy, 2017
In this study, we report results of the analysis of a particularly interesting scaling sample from the geothermal plant in Neustadt-Glewe in northern Germany, which contained 19% Galena (PbS) and 81% of a heterogeneous assemblage of (Ba,Sr)SO4 crystals ...
Frank Heberling   +3 more
doaj   +1 more source

The role of the 5f valence orbitals of early actinides in chemical bonding

open access: yesNature Communications, 2017
Understanding the chemistry of heavy radioactive elements is crucial to harnessing them for fuel and medicine. Here, the authors combine advanced X-ray spectroscopy and modelling to the study the chemical bonding of the 5fvalence orbitals of uranium ...
T. Vitova   +11 more
doaj   +1 more source

Selective Americium Separation: New Insights into the Complexation of Trivalent f-Elements with SO3-Ph-BTBP [PDF]

open access: yesEPJ Web of Conferences
In the Americium selective (AmSEL) process, the N-donor ligand 3,3’,3’’,3’’’-([2,2’-bipyridine]-6,6’-diylbis(1,2,4-triazine-3,5,6-triyl))tetrabenzenesulfonate (SO3-Ph-BTBP) is used to selectively strip Am(III) from a N,N,N’,N’-tetraoctyl diglycolamide ...
Sauerwein Fynn S.   +5 more
doaj   +1 more source

Fifteen Years of Radionuclide Research at the KIT Synchrotron Source in the Context of the Nuclear Waste Disposal Safety Case

open access: yesGeosciences, 2019
For more than 120 years, systematic studies of X-ray interaction with matter have been the basis for our understanding of materials—both of natural or man-made origin—and their structure-function relationships.
Jörg Rothe   +13 more
doaj   +1 more source

Performance of introducing outdoor cold air for cooling a plant production system with artificial light

open access: yesFrontiers in Plant Science, 2016
The commercial use of a plant production system with artificial light (PPAL) is limited by its high initial construction and operation costs. The electric-energy consumed by heat pumps, applied mainly for cooling, accounts for 15-35% of the total ...
Jun eWang   +7 more
doaj   +1 more source

Progress and Challenges of Materials and Methods for Uranium Extraction From Seawater

open access: yesHe huaxue yu fangshe huaxue, 2023
The ocean covers 70% of the earth’s area, and the seawater uranium is more than 1000 times that of terrestrial uranium ore. In order to increase the power generation and ensure the sustainable operation of nuclear power plants, the development of ...
TANG Xing-rui   +8 more
doaj   +1 more source

Linear thermal expansion behavior of compacted bentonite buffer materials

open access: yesCase Studies in Thermal Engineering, 2022
In a geological repository system, buffer is indispensable to ensure the safe disposal of high-level radioactive waste (HLW). Because heat generated from spent nuclear fuel in a canister is released to the surrounding buffers, thermal properties of such ...
Seok Yoon, Gi-Jun Lee, Gyu-Hyun Go
doaj   +1 more source

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