Results 111 to 120 of about 1,193,585 (233)

Integrated Alpha–Gamma Radiation Exposure From Natural Radionuclides in Cement and Gypsum Production: Implications for Occupational Lung Cancer Risk

Environmental Toxicology, EarlyView.
ABSTRACT Natural radionuclides in cement and gypsum production materials pose significant risks of occupational radiation exposure that are not well documented in Iraqi Kurdistan. This study quantifies alpha and gamma radiation levels from naturally occurring radioactive materials, specifically 222Rn, 238U, 232Th, and 40K, in cement and gypsum samples ...
Adil M. Hussien, Kardo O. Mamand, Hiwa M. Qadir, Berun N. Ghafoor, Goran H. Mohammad   +4 more
wiley   +1 more source

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

A reappraisal of the Middle to Later Stone Age prehistory of Morocco Réévaluer la préhistoire du Maroc, du Middle Stone Age au Later Stone Age

Journal of the Royal Anthropological Institute, EarlyView.
Over the last 25 years, perceptions of the early prehistory of Northwest Africa have undergone radical changes due to new fieldwork projects and a corresponding growth in scientific interest in the region. Much of this work has been focused in Morocco, known for its extremely rich fossil and archaeological records in caves and rock shelters.
Nick Barton, Abdeljalil Bouzouggar, Stacy Carolin, Louise Humphrey   +3 more
wiley   +1 more source

High Entropy Effect Induced In-situ Surface Hydroxylation for Robust Electro-assisted Uranium Mineralization from Real Nuclear Wastewater

Nature Communications
Exploring highly active and cost-efficient electrocatalysts with in-situ regeneration of coordination sites is crucial for the large-scale application of electro-assisted uranium extraction technology, which can effectively solve the problem of limited ...
Hailin Wu, Xiaofang Feng, Xun Yang, Xiaochuan Deng, Wenjie Sun, Xiaoyu Liu, Xue Jiang, Wenli Zhou, Zicheng Yao, Tao Chen, Wenkun Zhu   +10 more
doaj   +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

To Extract, or not to Extract Uranium from Phosphate Rock, that is the Question [PDF]

Environmental Science & Technology, 2016
Nils Haneklaus, Yajie Sun, Roland Bol, Bernd Lottermoser, Ewald Schnug   +4 more
openaire   +2 more sources

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

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

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

Designing self-adaptative cyclized polyacrylonitrile-polyethyleneimine conjugates enhance uranium extraction from natural seawater

Nature Communications
Uranium extraction from seawater offers a promising route to secure sustainable nuclear fuel and mitigate environmental issues from fossil fuel consumption, yet it remains hindered by low extraction efficiency and severe biofouling.
Ying Wang, Ruolan Zhao, Yachao Xu, Peng Yu, Shifang Yang, Yue Qu, Rongjuan Feng, Mingyi Zhang, Youxing Liu   +8 more
doaj   +1 more source