Results 81 to 90 of about 1,141,630 (281)

Alpha-radioactive isotopes in the marine environment. [PDF]

, 1975
Includes bibliographical references.Various marine organisms collected from southern hemisphere waters around Cape Town were analysed by radiochemistry and alpha-spectrometry for Pu-239, 240.
Higgo, Jennifer Joan Wynne
core   +1 more source

Preparation and Uranium Extraction Performance of Composite Aerogel

He huaxue yu fangshe huaxue
Nuclear energy, as a safe, low-carbon, stable, and efficient clean energy source, demonstrates broad development prospects in global energy transition and climate change mitigation.
Tao LI, Baitong ZHANG, Jingyi MA, Qinggang HUANG, Jieru WANG, Jian CHU, Wei TIAN, Zhi QIN, Jing BAI   +8 more
doaj   +1 more source

Uranium Extraction from Syrian Phosphate: A case Study [PDF]

International Journal of Economic and Environment Geology, 2010
Uranium and trace elements were studied in few hundred samples from phosphatic formations in Syria. Uranium and trace elements were enriched in phosphorites facies compared to carbonate and siliceous facies.
J.STAS, I. OTHMAN, M. ABBAS, H. SHLEWIT
doaj  

Kinetically controlled release of uranium from soils

, 1997
Although trade element uptake on and release from solid phases are fundamental controls on the migration of the elements in the environment, the controls are incompletely understood.
Braithwaite, A., A. BRAITHWAITE, F. R. LIVENS, Richardson, S., S. RICHARDSON, Howe, M., Goulding, K. W. T., M. T. HOWE, K. W. T. GOULDING, Livens, F. R.   +9 more
core   +1 more source

Managing and visualising geochemical data for tephra correlation with the IntChron Integration Tool

Journal of Quaternary Science, EarlyView.
ABSTRACT There is now a wealth of glass‐shard geochemical data for volcanic ash (tephra) layers from a wide range of volcanoes and eruptions, providing invaluable datasets for tephrochronology. However, compilation of published data to assess tephra correlations leads to large files and requires careful management.
Victoria C. Smith, Danielle McLean, Eloise Wilkinson‐Rowe, Emma L. Horn, Gavin Kane, Christopher Bronk Ramsey   +5 more
wiley   +1 more source

DNA nano-pocket for ultra-selective uranyl extraction from seawater

Nature Communications, 2020
The extraction of metals from seawater is an area of great potential; especially for the extraction of uranium. Here, the authors report on the synthesis of a DNA based uranium adsorbent with high selectivity and demonstrate the potential for the DNA ...
Yihui Yuan, Tingting Liu, Juanxiu Xiao, Qiuhan Yu, Lijuan Feng, Biye Niu, Shiwei Feng, Jiacheng Zhang, Ning Wang   +8 more
doaj   +1 more source

Electrospun fibrous sorbents for the removal of uranium and americium from aqueous media

Polymer International, EarlyView.
Polymethacrylate‐based electrospun microfibers with tertiary amino functionalities are evaluated as adsorbents for U‐232 and Am‐241 in both simplified and complex (seawater) water matrices, highlighting their ability for efficient actinide removal. Abstract Polymethacrylate‐based electrospun microfibers containing tertiary amino functionalities were ...
Andreas Hadjianastasi, Ioannis Ioannidis, Petri C Papaphilippou, Ioannis Pashalidis, Theodora Krasia‐Christoforou   +4 more
wiley   +1 more source

Repeated Pleistocene Permafrost Episodes in the Western Pannonian Basin

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Concerning the study of past periglacial processes, the Pannonian Basin is a key area as it contains the southernmost frost polygons found in Central Europe. The presence or absence of permafrost is still, however, a matter of debate, and data on the timing of frost action are also scarce.
Krisztina Sebe, Ágnes Novothny, Gergely Surányi, Barbara Varga, László Fodor, Gábor Csillag   +5 more
wiley   +1 more source

The solvent extraction and stripping process using Alamine 336 with a case study of uranium

Scientific Reports
In this research, a comprehensive study of the solvent extraction of uranium (VI) from acidic sulfate solutions using Alamine 336 diluted in kerosene was scrutinized.
Fazel Zahakifar, Fereshte Khanramaki, Davood Ghoddocy Nejad, Valiyollah Ghazanfari, Ali Yadollahi   +4 more
doaj   +1 more source

Uranium Extraction From Laboratory-Synthesized, Uranium-Doped Hydrous Ferric Oxides

Environmental Science & Technology, 2009
The extractability of uranium (U) from synthetic uranium-hydrous ferric oxide (HFO) coprecipitates has been shown to decrease as a function of mineral ripening, consistent with the hypothesis that the ripening process will decrease uranium lability. To evaluate this process, three HFO suspensions were coprecipitated with uranyl (UO2(2+)) and maintained
Smith, Steven, Douglas, Matthew, Moore, Dean A., Kukkadapu, Ravi K., Arey, Bruce   +4 more
openaire   +3 more sources