Results 161 to 170 of about 330,203 (416)

Recent progress of geophysical exploration in Earth's impact craters

地球与行星物理论评
Geophysical exploration plays an important role in detecting and studying impact structures. This article reviews the common geophysical features of Earth's impact craters, including their gravity, magnetic, electrical, and seismic characteristics.
Yangfan Deng, Heng Luo, Zhou Zhang, Sheng Zhu, Runqing Huang, Zhongfa Hu, Xin Li   +6 more
doaj   +1 more source

A comprehensive review of experimental studies on shear behavior of bolted rock joints with varying rock joint and bolt parameters and normal stress

Deep Underground Science and Engineering, EarlyView.
This study reviews the research findings on the shear behavior of bolted rock joints in deep underground engineering, where they face high stress, high water pressure, and engineering disturbance. This study examines how the shear strength of bolted rock joints is affected by various factors, such as normal stress, rock compressive strength, joint ...
Chang Zhou, Zhenwei Lang, Shun Huang, Qinghong Dong, Yanzhi Wang, Wenbo Zheng   +5 more
wiley   +1 more source

Experimental study on the damage characteristics of cyclic disturbance and acoustic emission characteristics of different types of sandstones under high stress in deep mines

Deep Underground Science and Engineering, EarlyView.
The mechanical characteristics of three different types of sandstones under high stress levels are studied. The degree of fragmentation of specimens increases with the applied stress level. The acoustic emission counting of different types of sandstones presents three stages: weakening, stabilizing, and surging.
Yujing Jiang, Bin Liang, Dong Wang, Ling Dong, Hengjie Luan, Changsheng Wang, Jiankang Liu   +6 more
wiley   +1 more source

A Comparison of Microdrilling-TIMS/MC-ICPMS and LA-MC-ICPMS for Micro-sample Sr Isotope Measurement

Yankuang ceshi, 2014
Compared to the traditional strontium isotope analytical method, a micro-sample strontium isotope system study can reveal the heterogeneity of analyzed samples and is widely used in various fields of geology, such as crust-mantle interaction, genesis and
ZHANG Le, REN Zhong-yuan, DING Xiang-li, WU Ya-dong, LAI Yong-wang   +4 more
doaj   +2 more sources

Semiquantitative spectrographic analysis and rank correlation in geochemistry [PDF]

, 1956
F.J. Flanagan
openalex   +1 more source

Gomes et al. (2024) Early diagenetic evolution based on petrography and stable isotope analysis in the Barra Velha formation of the Brazilian Pre‐Salt, The Depositional Record

The Depositional Record, EarlyView.
André L. S. Pestilho, R. Agustin Mors
wiley   +1 more source

A case study on the stability of a big underground powerhouse cavern cut by an interlayer shear zone in the China Baihetan hydropower plant

Deep Underground Science and Engineering, EarlyView.
A 9‐year study on the deformation and stability problem of the large deep underground cavern in Baihetan power station was carried out. Abstract The big underground powerhouse cavern of the China Baihetan hydropower plant is 438 m long, 34 m wide, and 88.7 m high.
Lifang Zou, Guotao Meng, Jiayao Wu, Wei Fu, Weijiang Chu, Weiya Xu   +5 more
wiley   +1 more source

Molecular Simulation of Resin and the Calculation of Molecular Bond Energy

ACS Omega, 2021
Tian Liang, Zhao-Wen Zhan, Yan-Rong Zou
doaj   +1 more source

Damage evolution of surrounding sandstone rock under charging–discharging cyclic loading in the natural gas storage of abandoned mines based on the discrete element method

Deep Underground Science and Engineering, EarlyView.
This study established a true triaxial numerical model of rock mass with the discrete element method and explored the crack evolution of surrounding rock of underground roadway gas storage during cyclic loading and unloading and the damage numerical model considering residual deformation.
Zhanguo Ma, Junyu Sun, Peng Gong, Erwin Oh, Jun Hu, Ruichong Zhang   +5 more
wiley   +1 more source

Laser Induced Fluorescence for In Situ Detection of Typical Heavy Metals in Groundwater

Yankuang ceshi
On-site detection of heavy metals in groundwater is important to quickly evaluate pollution. Laser induced fluorescence (LIF) utilizes specific fluorescent probes to generate/quench fluorescence in the presence of heavy metals, thereby achieving heavy ...
Kang MAO, Jiaqi XUE, Zhuo CHEN, Hua ZHANG   +3 more
doaj   +1 more source