Results 11 to 20 of about 142,937 (344)

The waterbodies of the halo-volcanic Dallol complex: earth analogs to guide us, where to look for life in the universe

Frontiers in Microbiology, 2023
Microbes are the Earth life forms that have the highest degree of adaptability to survive, live, or even proliferate in very hostile environments. It is even stated that microbes can cope with any extreme physico-chemical condition and are, therefore ...
Hugo Moors, Mieke De Craen, Mieke De Craen, Carla Smolders, Ann Provoost, Natalie Leys   +5 more
doaj   +1 more source

Long-term radionuclide retention in the near field: collaborative R&D studies within EURAD focusing on container optimisation, mobility, mechanisms and monitoring

EPJ Nuclear Sciences & Technologies, 2022
Within EURAD, targeted collaborative research activities are performed to further deepen understanding regarding the long-term behaviour of key components in the repository near-field, assess specific radionuclide retention processes as well as ...
Altmaier Marcus, Bertrand Johan, Churakov Sergey, Diomidis Nikitas   +3 more
doaj   +1 more source

Texas solution or nuclear nightmare? : as a company in the Lone Star State moves to profit from America's dilemma with spent nuclear fuel, others fear the worst [PDF]

, 2015
textThe United States government has sought a permanent disposal site for spent nuclear fuel since 1982. To date, no location for disposing of spent fuel exists.
Baucum, Joseph Albert
core   +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?

Geothermal 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, Dieter Schild, Detlev Degering, Thorsten Schäfer   +3 more
doaj   +1 more source

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

Nature 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, I. Pidchenko, D. Fellhauer, P. S. Bagus, Y. Joly, T. Pruessmann, S. Bahl, E. Gonzalez-Robles, J. Rothe, M. Altmaier, M. A. Denecke, H. Geckeis   +11 more
doaj   +1 more source

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

EPJ 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., Sittel Thomas, Geist Andreas, Panak Petra J., Wilden Andreas, Modolo Giuseppe   +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

Geosciences, 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, Marcus Altmaier, Ron Dagan, Kathy Dardenne, David Fellhauer, Xavier Gaona, Ernesto González-Robles Corrales, Michel Herm, Kristina O. Kvashnina, Volker Metz, Ivan Pidchenko, Dieter Schild, Tonya Vitova, Horst Geckeis   +13 more
doaj   +1 more source

Opportunities and challenges of applying advanced X-ray spectroscopy to actinide and lanthanide N-donor ligand systems

Journal of Synchrotron Radiation, 2022
N-donor ligands such as n-Pr-BTP [2,6-bis(5,6-dipropyl-1,2,4-triazin-3-yl)pyridine] preferentially bind trivalent actinides (An3+) over trivalent lanthanides (Ln3+) in liquid–liquid separation. However, the chemical and physical processes responsible for
Tim Pruessmann, Peter Nagel, Laura Simonelli, David Batchelor, Robert Gordon, Bernd Schimmelpfennig, Michael Trumm, Tonya Vitova   +7 more
doaj   +1 more source

Permeability Characteristics of Bedrock Weathering Layer in Southern Coast Area of China

Shuitu baochi tongbao, 2022
[Objective] The permeability characteristics of the bedrock weathering layer were determined in order to propose a corresponding experimental method of hydraulic conductivity, and thereby provide a scientific reference for the performance assessment of ...
Xinyu Fu, Jiebiao Li, Qun Wu, Tongtong Li, Jingbo Zhao   +4 more
doaj   +1 more source

Design of a renewable hydroxyapatite-biocarbon composite for the removal of uranium(VI) with high-efficiency adsorption performance

Biochar, 2022
Highlights 1. The recyclable high-efficiency Hap@BC was prepared for U(VI) removal. 2. The adsorption capacity for U(VI) of Hap@BC-10% achieved 834.8 mg/g. 3. The U(VI) extraction efficiency reached 99.9% in dynamic adsorption. 4.
Jun Liao, Ting Xiong, Ling Ding, Ying Xie, Yong Zhang, Wenkun Zhu   +5 more
doaj   +1 more source