Results 91 to 100 of about 133,977 (299)

Process and forces of tight-sandstone gas charging in the Shihezi formation (P2x1) Dongsheng gas field, northern Ordos Basin China

Scientific Reports
The Dongsheng Gas Field, a giant tight-gas field in the northern margin of the Ordos Basin in China, has the Lower Permian Shihezi Formation (P2x1) as the main gas production layer, with tight-sandstone reservoirs (average porosity and permeability of 8 ...
Qiang Cao, Faqi He, Wei Zhang, Jiaren Ye, Yongchao Lu, Yiming Liu, Hanwen Yu, Chuan An, Lina Sun   +8 more
doaj   +1 more source

Formation and Identification of Unresolved Complex Mixtures in Lacustrine Biodegraded Oil from Nanxiang Basin, China

The Scientific World Journal, 2014
A comprehensive two-dimensional gas chromatography/time-of-flight mass spectrometry (GC × GC/TOFMS) method has been developed for the formation and identification of unresolved complex mixtures (UCMs) in lacustrine biodegraded oils that with the same ...
Pengfei Guo, Sheng He, Shukui Zhu, Derong Chai, Shiyan Yin, Wei Dai, Wanfeng Zhang   +6 more
doaj   +1 more source

Review and prospects of shear test of bolted rock joints

Deep Underground Science and Engineering, EarlyView.
The laboratory shear test equipment, test method, and numerical simulation of bolted rock joints were summarized. The shortcomings and limitations of the current research were analyzed, and the research prospects were proposed. Abstract Rock bolting is a critical approach in geotechnical engineering for supporting weak rocks.
Shulin Ren, Fan Yang, Manchao He, Yong Yuan, Zhigang Tao   +4 more
wiley   +1 more source

Effects of Seismogenic Faults on the Predictive Mapping of Probability to Earthquake-Triggered Landslides

ISPRS International Journal of Geo-Information, 2019
The seismogenic fault is crucial for spatial prediction of co-seismic landslides, e.g., in logistic regression (LR) analysis considering influence factors.
Xiaoyi Shao, Chong Xu, Siyuan Ma, Qing Zhou   +3 more
doaj   +1 more source

Temperature‐dependent shear behavior and constitutive model of the rock–concrete interface

Deep Underground Science and Engineering, EarlyView.
Shear tests were conducted to investigate the temperature‐dependent shear behavior of the rock–concrete interface, highlighting the interaction between the surrounding rock and the lining during tunnel fires. Under experimental conditions, concrete exhibited greater temperature sensitivity than rock, with the shear fracture surface transitioning from ...
Hongbin Chen, Yujing Jiang, Rui Pan, Bin Wang, Sunhao Zhang, Jinge Zhang, Xianzhuang Ma   +6 more
wiley   +1 more source

The Hematite Question: Hydrogen‐Driven Magnetization of Hematite‐Bearing Sandstones and Insights for Natural Hydrogen Exploration

Geophysical Research Letters
Natural hydrogen is a promising clean energy resource, but locating subsurface accumulations remains challenging. Aeromagnetic anomalies are increasingly utilized as a rapid and cost‐effective tool for geological hydrogen prospection, particularly ...
B. D. L. Mendes, C. Cheng, C. Hilgers, A. Kontny   +3 more
doaj   +1 more source

Techniques, problems and uses of mega-geomorphological mapping [PDF]

A plea for a program of global geomorphological mapping based on remote sensing data is presented. It is argued that the program is a necessary step in bringing together the rapidly evolving concepts of plate tectonics with the science of geomorphology ...
Embleton, C.
core   +1 more source

Shear behavior of bolt–grout interfaces under constant normal stiffness: Influence of grout strength and thickness

Deep Underground Science and Engineering, EarlyView.
The effects of grout strength and thickness on the shear behavior of bolt–grout interfaces (BGI) under constant normal stiffness conditions are investigated. Shear strength, failure modes, and acoustic emission characteristics are examined. The findings reveal that grout strength exerts a significantly greater influence on BGI shear strength and ...
Sunhao Zhang, Dongqi Shang, Yujing Jiang, Jinge Zhang, Hongbin Chen, Tianqi Jiang   +5 more
wiley   +1 more source

Thermodynamic Limits on Magnetodynamos in Rocky Exoplanets

, 2010
To ascertain whether magnetic dynamos operate in rocky exoplanets more massive or hotter than the Earth, we developed a parametric model of a differentiated rocky planet and its thermal evolution.
Ahrens, Aitta, Barnes, Batygin, Berman, Bi, Biggin, Christensen, Clinton P. Conrad, Elkins-Tanton, Eric Gaidos, Gubbins, Guillot, Hemley, Herrero-Bervera, John Hernlund, Kite, Koch, Li, Marcus, Matassov, McNamara, Michael Manga, Seager, Shkolnik, Turcotte, Valencia, Valencia, Wang   +28 more
core   +1 more source

A review on rockburst prediction and prevention to shape an ontology‐based framework for better decision‐making for underground excavations

Deep Underground Science and Engineering, EarlyView.
A scientometric analysis of 2449 journal articles and a comprehensive review of 336 papers were conducted, discussing and identifying challenges and research gaps in rockburst prediction and prevention and proposing an ontology‐based framework for better decision‐making in underground excavations. Abstract With underground engineering projects becoming
Hongchuan Yan, Haijiang Li, Hongqiang Xie, Mingli Xiao, Jianliang Pei, Huaizhong Liu, Jiangda He   +6 more
wiley   +1 more source