Results 101 to 110 of about 3,218,520 (221)
Review of laser isotope separation of uranium hexafluoride. [PDF]
, 1983 There is continuing world-wide interest in the possibility of enriching uranium by a laser process which uses uranium hexafluoride. Since no actual commercial plant exists at present this review examines the key areas of related research.
Kelly, JW
core
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 +3 more
wiley +1 more source
, 1959 A direct method is presented for the determination of uranium in uranium concentrates by spectrophotometric titration with ferric sulphate, after a bismuth amalgam reduction.
Florence, TM
core
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
Trace Element Patterns in Juvenile Wild Chimpanzee Dentitions
Archaeometry, EarlyView.ABSTRACT Trace elements are used to infer mammalian early‐life diets, environmental toxins, dispersal patterns, stress histories, and weaning ages. Here, we employ laser ablation‐inductively coupled plasma‐mass spectrometry (LA‐ICP‐MS) to reveal elemental patterns in our closest living relatives, chimpanzees.
Tanya M. Smith +5 more
wiley +1 more source
Insights into uranium enrichment of indigenous electroactive Shewanella putrefaciens
Frontiers in MicrobiologyBioremediation of uranium-contaminated environments using native bacteria shows great promise. While Shewanella putrefaciens (S. putrefaciens) is a known uranium reducing bacterium, the mechanisms and adaptability of indigenous strains from uranium mine ...
Guolin Yang +4 more
doaj +1 more source
Archaeometry, EarlyView.ABSTRACT The inland rock‐cut site of Teniky, located in the Isalo massif of southern Madagascar, represents an exceptional archaeological context recently dated to the 11th–12th centuries ad, corresponding to the early phases of settlement on the island.
Jean Rodier +2 more
wiley +1 more source
Uranium Isotopes Fingerprint Biotic Reduction [PDF]
Knowledge of paleo-redox conditions in the Earth's history provides a window into events that shaped the evolution of life on our planet. The role of microbial activity in paleo-redox processes remains unexplored due to the inability to discriminate ...
Neubert, Nadja +6 more
core +2 more sources
Archaeometry, EarlyView.ABSTRACT Chert tools were widely used in prehistory by human societies due to their knapping suitability and availability, but their relatively uniform composition, especially in evaporitic cherts, complicates sourcing, requiring specialised analytical methods.
Bruno Gómez de Soler +5 more
wiley +1 more source
Nature CommunicationsExploring 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 +10 more
doaj +1 more source