Results 51 to 60 of about 36,123 (237)

Thermal fluctuation fields in basalts [PDF]

Earth, Planets and Space, 2009
AbstractThe thermal fluctuation field (Hf) is central to thermoremanent acquisition models, which are key to our understanding of the reliability of palaeomagnetic data, however,Hfis poorly quantified for natural systems. We reportHfdeterminations for a range of basalts, made by measuring rate-dependent hysteresis.
Muxworthy, A., Heslop, D., Michalk, D.
openaire   +4 more sources

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

Old/New Subduction Zone Paradigms as Seen From the Cascades

Frontiers in Earth Science, 2020
This paper briefly reviews the magmatic manifestations of volcanic arcs and aspects of how such magmas form. Common concepts about “how subduction zones work” are reassessed—with particular emphasis on the atypical Cascades volcanic arc.
William P. Leeman
doaj   +1 more source

The damage and failure mechanism of prestatically loaded rock during medium‐strain rate cyclic impact loading

Deep Underground Science and Engineering, EarlyView.
Based on experimental results and theoretical analysis, an established rock damage accumulation model that comprehensively considers the preapplied static load, impact peak value, impact frequency, and impact times. Abstract To study the rock damage mechanism under high static loading and superimposed medium strain rate cyclic impact loading, a series ...
Wei Wang, Hanpeng Wang, Zicheng Wang, Xinyuan Xie, Yunhao Wu, Jinhou Zhang, Dekang Sun   +6 more
wiley   +1 more source

TRENDS IN THE USE OF HIGH STRENGTH MATERIALS IN MACHINE CONSTRUCTION [PDF]

Journal of Research and Innovation for Sustainable Society, 2020
The metal alloys frequently used so far in the construction of machines have begun to have limitations of use caused by the demands of increasingly restrictive working conditions.
Marius BIBU
doaj  

Effect of Orientation of Basalt Fiber Skin on Damping Performance of PALF/Epoxy Hybrid Composites

Journal of Natural Fibers, 2022
The objective of the present study is to develop a low-cost hybrid composite using pineapple leaf fiber obtained from agro-waste as core and high modulus basalt fiber produced from volcanic rock as skin to analyze the impact of basalt fiber orientation ...
Parameswara Rao Venkata Doddi, Siva Prasad Dora, Ratnam Chanamala   +2 more
doaj   +1 more source

Evaluation of Present Tectonic Stress Field and Permeability of Coalbed Methane Reservoirs by Inversion of Logging Data From Longtan Formation, Dahebian Block

Energy Science &Engineering, EarlyView.
ABSTRACT The permeability of coal reservoirs is predominantly controlled by the present tectonic stress field. This study systematically integrates macro‐ and micro‐scale analytical methods to investigate the controlling mechanisms of tectonic stress on pore‐fracture characteristics and permeability in the Longtan Formation coal reservoirs.
Guoqing He, Zhonghu Wu, Wenjibin Sun, Xianchao Yang, Jintao Zhou, Jun Yu, Baofeng Lan   +6 more
wiley   +1 more source

Wavelet-based vibration denoising for structural health monitoring

Urban Lifeline
In the context of civil engineering applications, vibration responses are complex, exhibiting variations in time and space and often containing nonlinearity and uncertainties not considered during data collection. These responses can also be contaminated
Ahmed Silik, Mohammad Noori, Zhishen Wu, Wael A. Altabey, Ji Dang, Nabeel S. D. Farhan   +5 more
doaj   +1 more source

Ethnicity and health-related quality of life in the post stroke population: a systematic review

Journal of Rehabilitation Medicine
Background/Objective: A systematic review was conducted on the association between ethnicity and health-related quality of life in post-stroke populations. Methods: In February 2024, a comprehensive search was conducted across several databases. Studies
Ying Xing Lee, Cornelie D. Andela, Korné Jellema, Johannes W. Schoones, Thea P. M. Vliet Vlieland, Henk J. Arwert   +5 more
doaj   +1 more source

Radiolytic hydrogen production in the subseafloor basaltic aquifer

Frontiers in Microbiology, 2016
Hydrogen (H2) is produced in geological settings by dissociation of water due to radiation from radioactive decay of naturally occurring uranium (238U, 235U), thorium (232Th) and potassium (40K). To quantify the potential significance of radiolytic H2 as
Mary E Dzaugis, Arthur J Spivack, Ann G Dunlea, Richard W Murray, Steven eD'Hondt   +4 more
doaj   +1 more source