Results 261 to 270 of about 333,342 (343)

Geochemical Characteristics and Risk Assessment of PTEs in the Supergene Environment of the Former Zoige Uranium Mine. [PDF]

Toxics
Zhang N, Shi Z, Zou C, Zhu Y, Hou Y.
europepmc   +1 more source

Orbitally‐Driven Nutrient Pulses Linked to Early Cambrian Periodic Oxygenation and Animal Radiation

Geophysical Research Letters, Volume 52, Issue 20, 28 October 2025.
Abstract During the Cambrian Explosion, episodic radiations of major animal phyla occurred in concert with repeated coupled carbon‐sulfur isotope excursions. These isotope patterns are thought to reflect oscillations in atmospheric and shallow‐marine O2, which promoted animal diversification events. However, the driver for oxygenation pulses is unclear.
Yinggang Zhang, Benjamin J. W. Mills, Robert J. Newton, Tianchen He, Ailsa Roper, Tao Yang, Maoyan Zhu   +6 more
wiley   +1 more source

Heavy metals and natural radioactive isotopes in phosphate and compound fertilisers and their impact on human health. [PDF]

Sci Rep
Łukaszek-Chmielewska A, Rachwał M, Rakowska J, Piec R, Podleśna A, Piotrowska B, Isajenko K, Mietelski JW, Kierepko R, Kosturkiewicz B.   +9 more
europepmc   +1 more source

The Reduction of Group 6–8 Transition Metal Oxides with Hydrogen—From Ore Smelting to Reaction Pathways#

European Journal of Inorganic Chemistry, Volume 28, Issue 30, October 22, 2025.
As the reduction of transition metal oxides by coal poses a significant climate risk, the use of alternative reducing agents such as hydrogen is becoming increasingly important. This review summarizes the current knowledge of the reduction pathways of transition metal oxides from groups 6 to 8.
Michael Häger, Simon Keilholz, Holger Kohlmann   +2 more
wiley   +1 more source

Highly Efficient Adsorption of Uranium(VI) Ions in Aqueous Solution by Imidazole-4,5-Dicarboxylic Acid-Functionalized UiO-66. [PDF]

Molecules
Lan T, Liu X, Cong H, Ding X, Zhao J, Xiao S.   +5 more
europepmc   +1 more source

Dating a Medieval Tsunami With Uranium‐Series Techniques on Caribbean Corals

Geophysical Research Letters, Volume 52, Issue 19, 16 October 2025.
Abstract Uranium‐series dates from coral boulders constrain the timing of a medieval tsunami from the Puerto Rico Trench. Previously reported evidence for this tsunami includes hundreds of coral boulders that came to rest hundreds of meters inland on Anegada, British Virgin Islands.
K. Halimeda Kilbourne, Jennifer Weil‐Accardo, Nathalie Feuillet, Pierre Deschamps, Yuan‐yuan Xu, Chuan‐Chou Shen, Hailong Sun, Robert B. Halley, Brian F. Atwater   +8 more
wiley   +1 more source

Swiss national radon database: impact of building and environmental factors. [PDF]

Front Public Health
Rey JF, Berlusconi C, Pampuri L, Goyette Pernot J.   +3 more
europepmc   +1 more source

[Au(CO)2][UF6]–Synthesis, Crystal Structure, Raman Spectroscopy, and Quantum‐Chemical Calculations of the Nonclassical Carbonyl Compound

European Journal of Inorganic Chemistry, Volume 28, Issue 28, October 11, 2025.
The crystal structure of the nonclassical carbonyl [Au(CO)2][UF6] is determined by single‐crystal X‐ray diffraction. The ν(CO) vibration is observed at 2250 cm−1 in the Raman spectrum. Quantum‐chemical calculations with the PBE0 hybrid density functional theory method for the solid state and the [Au(CO)2]+ cation in the gas phase are carried out.
Tobias B. Wassermann, Antti J. Karttunen, Florian Kraus   +2 more
wiley   +1 more source

Mineral Chemistry and Chronology Investigation of Uraninite in the Jinguanchong Uranium Deposit in Eastern Hunan Province and the Implications for Geological Significance

ACS Omega
Pengfei Fan, Mangen Li, Hongye Huang, Guangwen Huang, Yong Gu, Ke Wang, Niannan Chen   +6 more
doaj   +1 more source

Sub-epsilon natural ²³⁴U/²³⁸U measurements refine the ²³⁴U half-life and U-Th geochronology. [PDF]

Sci Adv
Hu HM, Shen CC, Cheng H, Woodhead JD, Edwards RL, Zhao JX, Huang CY, Lu PY, Chien WY, Wang J, Jia X, Yokoyama Y, Cai Y, Zachariáš J.   +13 more
europepmc   +1 more source