Results 81 to 90 of about 6,478 (223)

Ion exchange investigation for recovery of uranium from acidic pregnant leach solutions

Nukleonika, 2017
The article describes studies on the separation of uranium from acid pregnant leach solutions obtained from Polish uranium ores: dictyonema shales and sandstone rocks.
Danko Bożena, Dybczyński Rajmund S., Samczyński Zbigniew, Gajda Dorota, Herdzik-Koniecko Irena, Zakrzewska-Kołtuniewicz Grażyna, Chajduk Ewelina, Kulisa Krzysztof   +7 more
doaj   +1 more source

The morphological affinities of the fossil cranium from Kabua, Kenya Affinités morphologiques du crâne fossile de Kabua (Kenya)

Journal of the Royal Anthropological Institute, EarlyView.
Our current understanding of the origins of Homo sapiens is limited, in part, by the fragmented fossil record from Late Pleistocene and early Holocene Africa. Here, we re‐examine the Kabua 1 cranium, an enigmatic and little‐studied Kenyan fossil discovered in the 1950s. We compare virtual reconstructions created previously by our team with a wide range
Abel Marinus Bosman, Laura Tabitha Buck, Hugo Reyes‐Centeno, Marta Mirazón Lahr, Chris Stringer, Rainer Grün, Qingfeng Shao, Katerina Harvati   +7 more
wiley   +1 more source

Research of uranium content in the composition of phosphorites of the Aznek mines [PDF]

E3S Web of Conferences
Today, practical work is being carried out in the world on processing minerals to obtain valuable components. Leading scientists from all over the world are engaged in scientific research on the extraction and production of radioactive elements, such as ...
Khurramov Navruzbek, Nurmurodov Tulkin, Rakhimova Gulrukh, Nuriddinova Ziyoda, Sharafutdinov Ulugbek   +4 more
doaj   +1 more source

The role of the Eastern Mediterranean in human evolution: recent results from Greece Le rôle du Bassin méditerranéen oriental dans l’évolution humaine : résultats récents en Grèce

Journal of the Royal Anthropological Institute, EarlyView.
The Eastern Mediterranean lies directly on the principal migration route for human groups dispersing across Africa, Europe, and Asia. It also encompasses the Balkans, where fauna and flora, as well as hominin populations, are thought to have persisted through glacial periods.
Katerina Harvati
wiley   +1 more source

Extraction of uranium from phosphoric acid by solvent approaches using D2EHPA and TOPO: Experimental design with environmental implications [PDF]

E3S Web of Conferences
With the current nation's great demand for nuclear power, the importance to recover uranium from phosphoric acid has become relevant, Solvent extraction is one of the most effective uranium recovery methods.
Ajabli Asmae, El Ahmadi Zakia, Berkalou Kaoutar, Ghazi Mohamed   +3 more
doaj   +1 more source

The emergence and complexification of symbolic practices in the Homo lineage: an archaeological and cognitive perspective Émergence et complexification des pratiques symboliques dans la lignée Homo : une approche archéologique et cognitive

Journal of the Royal Anthropological Institute, EarlyView.
Recent archaeological discoveries, reviewed in this essay, challenge traditional views on the emergence of human symbolic cognition. Once believed to have originated in Europe around 40,000 years ago, new evidence shows it emerged much earlier across diverse regions.
Francesco d'Errico, Ivan Colagè, Larissa M. Straffon, Andrea Bender   +3 more
wiley   +1 more source

Beyond Dualism: EU Policy Toward Central Asia Through Decarbonization, Problem Linkage, and Civil Society Engagement

Global Policy, EarlyView.
ABSTRACT Despite the large reappraisal of the EU's security and economic interests in Central Asia, its foreign policy impact has remained weak. This article develops a constructivist, multi‐level framework to examine how European and Chinese approaches to decarbonization are translated into policy in Kazakhstan and Uzbekistan.
Morena Skalamera
wiley   +1 more source

Sustainability of uranium extraction – a discussion

Nuclear power has been declared a green technology within the scope of the EU taxonomy. However, this decision did not take into account the mining of uranium and the final disposal of uranium products.  The different methods for mining uranium and their effects on the environment are discussed in this paper.
Engelbrecht, Hubert, Priester, Michael, Rechlin, Aissa   +2 more
openaire   +1 more source

Rethinking Societal Resilience as Deterrence: A Feminist Perspective on NATO and Ukraine's Experience

Global Policy, EarlyView.
ABSTRACT Recent shifts in European security have placed resilience at the center of deterrence and defense strategies. While resilience has traditionally been understood as the ability to withstand disruption and sustain military operations, there have been calls for a whole‐of‐society approach that strengthens societies against hybrid threats and ...
Jan Daniel, Míla O'Sullivan
wiley   +1 more source

Dictyonema black shale and Triassic sandstones as potential sources of uranium

Nukleonika, 2015
The main objective of the present study was an assessment of the possibility of uranium recovery from domestic resources in Poland. In the first stage uranium was leached from the ground uranium ore by using acidic (sulfuric acid or hydrochloric acid) or
Kiegiel Katarzyna, Zakrzewska-Kołtuniewicz Grażyna, Gajda Dorota, Miśkiewicz Agnieszka, Abramowska Anna, Biełuszka Paweł, Danko Bożena, Chajduk Ewelina, Wołkowicz Stanisław   +8 more
doaj   +1 more source