Results 41 to 50 of about 1,467,255 (278)

The Influence of Rock Properties and Size into Strength Criteria: A Proposed Criterion for Soft Rock Masses

Civil Engineering Dimension, 2011
A new modified strength criterion for soft rock masses is proposed in this paper in order to provide a suitable estimation for soft rock mass strength.
Agustawijaya D.S.
doaj  

Calculation Method of Overburden Damage Height Based on Fracture Mechanics Analysis of Soft and Hard Rock Layers

Geofluids, 2019
Under the geological condition of soft and hard rock interaction stratum, the overburden damage height can provide a quantitative support for the design of the locations of gas drainage boreholes in the roof mining fracture zone and the determination of ...
Liang Chen, Shaowu Fan, Can Zhao, Lang Zhang, Zhiheng Cheng   +4 more
doaj   +1 more source

A New Theoretical Model of Rock Burst-Prone Roadway Support and Its Application

Geofluids, 2021
A rock burst usually causes a roadway collapse or even an instant blockage. When the deformation energy accumulated in the surrounding rock exceeds the minimum energy required for the dynamic destruction of the surrounding rock of a roadway, a rock burst
Mingshi Gao, Yongliang He, Dong Xu, Xin Yu   +3 more
doaj   +1 more source

Ferroelectric Quantum Dots for Retinomorphic In‐Sensor Computing

Advanced Materials, EarlyView.
This work has provided a protocol for fabricating retinomorphic phototransistors by integrating ferroelectric ligands with quantum dots. The resulting device combines ferroelectricity, optical responsiveness, and low‐power operation to enable adaptive signal amplification and high recognition accuracy under low‐light conditions, while supporting ...
Tingyu Long, Huanyu Zhou, Jaewan Ko, Hongwei Tan, Jaemin Lim, Yanfei Zhao, Daehan Kang, Eojin Yoon, Gyeong‐Tak Go, Somin Kim, Seung‐Woo Lee, Chan‐Yul Park, Hyojun Choi, Hyeran Kim, Hyung Joong Yun, Sung Hyuk Park, Kwan Sik Park, Jeong Woo Park, Mungeun Kim, Yong Soo Cho, Ho Won Jang, Wenqiang Yang, Min Hyuk Park, Wan Ki Bae, Sebastiaan van Dijken, Joona Bang, Tae‐Woo Lee   +26 more
wiley   +1 more source

Coastal evolution of soft cliff coasts: headland formation and evolution on the Southwest Isle of Wight

, 2013
The standard model of headland formation assumes a coastline with discordant geology, where the less resistant rock is eroded at a higher rate than the more resistant geology. The indentation of the coastline will continue to increase until variations in
Stuiver, C.
core   +1 more source

Stability analysis of soft–hard-interbedded anti-inclined rock slope

Scientific Reports, 2023
The instability of rock slope is still a very frequent geological disaster, which seriously affects people's life and production activities. Previous studies have mainly focused on deformation mechanism, prediction, and control of hard rock with single ...
Jian‑jun Guo, Zhen-wei Wu, Kai Liu
doaj   +1 more source

Self‐Assembled Monolayers in p–i–n Perovskite Solar Cells: Molecular Design, Interfacial Engineering, and Machine Learning–Accelerated Material Discovery

Advanced Materials, EarlyView.
This review highlights the role of self‐assembled monolayers (SAMs) in perovskite solar cells, covering molecular engineering, multifunctional interface regulation, machine learning (ML) accelerated discovery, advanced device architectures, and pathways toward scalable fabrication and commercialization for high‐efficiency and stable single‐junction and
Asmat Ullah, Ying Luo, Stefaan De Wolf
wiley   +1 more source

UA Little Rock Seminar in Public History (HIST 7391) files on the Little Rock Port Authority, 2017

, 2016
This collection contains the project report, interviews, and transcripts from the University of Arkansas at Little Rock's Seminar in Public History's 2016 project,; Project staff: Jared Craig, Randall Crawford, Michael Fondren, Lyle Grisham, Neal ...
University of Arkansas at Little Rock. Department of History.
core   +1 more source

Stability analysis of deep and large vertical shaft excavation by raise boring machine method through upper soft and lower hard strata

Scientific Reports
In the deep and large vertical shaft excavation project, the composite stratum poses a great challenge to the stability of the vertical shaft surrounding rock, especially the upper soft and lower hard stratum. In this paper, a tunnel ventilation shaft is
Guofeng Wang, Yongqiao Fang, Fayi Deng, Kaifu Ren, Haiyan Xu   +4 more
doaj   +1 more source

Classification of coal/rock formation combination types and fracturing measures in Yuwu Mine

Meikuang Anquan
In order to classify the types of hydraulically fractured coal and rock seam combinations, the No.3 coal seam in Yuwu wellfield of Lu’an Mining area are taken as the research object in this paper, and the lithology and mechanical characteristics of the ...
Shaowei HAO, Jingshuo ZHANG, Shaowei WANG, Yafei JING   +3 more
doaj   +1 more source