Results 71 to 80 of about 259,481 (287)

Construction of Thermal-driven Convective Mineralization Model and Exploration Indicators for Qianjiadian Sandstone Uranium Ore Field in Songliao Basin

Yuanzineng kexue jishu
Significant breakthroughs have been made in the exploration of sandstone uranium deposits in the Qianjiadian area of the Songliao basin. The widespread development of basic magma intrusions in the region, along with their increasing relevance to the ...
DING Bo1, 2, LIU Hongxu1, 2, HUANG Shaohua1, 2, LIU Chiheng1, 2, QIU Linfei1, 2, HE Feng1, 2
doaj   +1 more source

Variable Temperature Studies of Two Calcium Uranates α‐Ca3UO6 and Ca2UO5

Chemistry – A European Journal, EarlyView.
The structures and thermal responses of the calcium uranates α‐Ca3UO6 and Ca2UO5 were investigated using in situ synchrotron x‐ray diffraction and neutron powder diffraction. Despite the very similar chemical compositions, the structural response of the two calcium uranates is shown to be complex and varied.
Maria K. Nicholas, Timothy A. Ablott, Caleb J. Bennett, Bryce G. Mullens, Helen E. Maynard‐Casely, Wen Liang Tan, Jeremy L. Wykes, Yingjie Zhang, Brendan J. Kennedy   +8 more
wiley   +1 more source

Identification of Astronomical Cycles in Upper Cretaceous Sifangtai Formation and Constraints on Depositional Age of Uranium Mineralized Sandstones in Qian’an Area of Songliao Basin

Yuanzineng kexue jishu
Cyclostratigraphy is widely applied in establishing high-precision sequence stratigraphic frameworks and astronomical time scales, making it an important field in the quantitative study of sedimentology.
WANG Junxian1, 2, ,  LI Ziying1, 2, ,  XING Zuochang1, 2,  LIU Jungang1, 2,  SHI Qingping1, 2,  TIAN Mingming1, 2,  JIA Licheng1, 2
doaj   +1 more source

Reclamation with Recovery of Radionuclides and Toxic Metals from Contaminated Materials, Soils, and Wastes [PDF]

, 1993
A process has been developed at Brookhaven National Laboratory (BNL) for the removal of metals and radionuclides from contaminated materials, soils, and waste sites. In this process, citric acid, a naturally occurring organic complexing agent, is used to
Dodge, C. J., Francis, A. J.
core   +1 more source

Geological and geotechnical challenges on the Great Dyke of Zimbabwe and their impact on hardrock pillar design

Deep Underground Science and Engineering, EarlyView.
The Great Dyke of Zimbabwe is notable for its rich platinum group metal deposits but poses significant geological and geotechnical challenges due to its complex rock types and structural features. Traditional pillar design methods are insufficient for addressing these complexities; the study suggests incorporating advanced techniques such as machine ...
Tawanda Zvarivadza, Hendrik Grobler, Moshood Onifade, Manoj Khandelwal   +3 more
wiley   +1 more source

A rock brittleness index based on the postpeak energy release rate and damage surface characteristics for brittle hard rock

Deep Underground Science and Engineering, EarlyView.
This study examines energy evolution in rock rupture via triaxial direct shear tests, exploring the impact of confining pressure and temperature on fracture surface randomness. A novel energy‐based brittleness index is proposed, validated experimentally, and compared with existing methods for reliability and accuracy.
Biao Wang, Zaobao Liu, Jing Xue, Bo Lu, Wei Zeng, Dengke Zhang   +5 more
wiley   +1 more source

Author Correction: Weak influence of the secondary surface processes on the regolith of Chang’E-5 landing site

Communications Earth & Environment, 2023
Junjie Li, Ziying Li, Zhixin Huang, Ting Li, Dongfa Guo, Hanbin Liu, Guang Fan, Mingkuan Qin, Liang Lei, Xin Zhou, Hailong Wang, Kaiyu Wang, Xiangbo Gao, Apeng Yu, Ruiping Liu, Jia Zhang, Liumin Deng, Sheng He, Yong Wu, Linfei Qiu   +19 more
doaj   +1 more source

Origin and Role of Kaolinization in Roll-Front Uranium Deposits and Its Response to Ore-Forming Fluids in the Yili Basin, China

Geofluids, 2018
Kaolinite is a common mineral found in most Chinese sandstone-hosted uranium deposits. It occurs particularly in coal-bearing clastic rocks in northwest China, such as the uranium deposits in the Yili Basin, which is well known for hosting several large ...
Z. Y. Liu, S. P. Peng, M. K. Qin, H. X. Liu, Y. Y. Geng, X. Zhang, B. Ding, X. Q. Xiu   +7 more
doaj   +1 more source

Interplay of defect cluster and the stability of xenon in uranium dioxide by density functional calculations

, 2010
Self-defect clusters in bulk matrix might affect the thermodynamic behavior of fission gases in nuclear fuel such as uranium dioxide. With first-principles LSDA+U calculations and taking xenon as a prototype, we find that the influence of oxygen defect ...
Chen, Ying, Geng, Hua Y., Kaneta, Yasunori, Kinoshita, Motoyasu, Wu, Q.   +4 more
core   +1 more source

Thermal Field–Enhanced Electro‐, Photo‐, and Photoelectrocatalytic Processes: Fundamentals, Material Design, and Applications

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Overview of thermal field–enhanced electro‐, photo‐, and photoelectrocatalytic processes: fundamentals, material design, and applications. As a very attractive approach to energy conversion and storage, electrocatalytic, photocatalytic, and photoelectrocatalytic strategies have gained increasing attention in the past decades.
Ziyi Qiao, Lingyi Li, Bing He, Yunhai Zhu, Yihuang Chen, Yingkui Yang, Xueqin Liu   +6 more
wiley   +1 more source