Results 101 to 110 of about 996,706 (291)

Research on the Layered Rock Mass Excavation Relaxation Stability of Underground Caverns

, 2020
In order to compare the influence of rock mass parameters weakening on the deformation and stability of excavation caverns in layered rock mass, based on power generation system caverns of a hydropower station, the stability and deformation of the ...
Xi Lu, Ying Zhang, Heng Zhou, Shengjie Di   +3 more
core   +1 more source

Cross‐Scale Hierarchical Targeted Delivery System Based on Small‐Scale Magnetic Robots

Advanced Robotics Research, EarlyView.
This article reviews a cross‐scale hierarchical targeted delivery system that integrates magnetic continuum robots and magnetic microrobots. By combining rapid long‐range navigation with precise microscale targeting, the system overcomes key limitations of single‐scale approaches.
Junjian Zhou, Zhiqiang Chen, Yuanbiao Ma, Zhiqiang Tang, Qianqian Wang   +4 more
wiley   +1 more source

Uniaxial Compression Test and Numerical Study on the Mechanical Mechanism of Crack Exhibition and Propagation in Layered Rocks

Applied Sciences
Layered rocks are widely distributed in mining and underground engineering. The evolution processes, such as crack initiation, development and penetration, inevitably occur due to stress changes.
Zhengnan Zhang, Xiangxin Liu, Bin Gong, Zhengzhao Liang, Xianxian Liu, Xun You   +5 more
doaj   +1 more source

Technical Feasibility Study of Autonomous Field Robot‐Based on‐the‐go Assessment of Soil Nutrients Using Ion‐Sensitive Field‐Effect Transistors

Advanced Robotics Research, EarlyView.
Autonomous field robots equipped with ISFET‐based sensors enable rapid, spatially resolved soil nutrient analysis directly in the field. An automated system based on the BoniRob platform is presented for standardized on‐site extraction and measurement of key macronutrients and soil pH.
Vadim Riedel, Stefan Hinck, Edgar Peiter, Arno Ruckelshausen   +3 more
wiley   +1 more source

Little Rock Board of Health transcripts

, 1911
This small collection contains minutes of meetings of the Little Rock Board of Health from 1911 ...
Little Rock Board of Health. (Little Rock, Ark.)
core   +1 more source

Toward Mechanical Intelligence in Robotics

Advanced Robotics Research, EarlyView.
Robots can use their physical bodies to perform functions usually assigned to electronic sensors and controllers. This perspective defines mechanical intelligence through three core operations: filtering inputs, routing mechanical signals, and switching between states.
Xinyi Yang, Xinyi Ding, Tianyu Wang, Daniel I. Goldman, Shucong Li, Bolei Deng   +5 more
wiley   +1 more source

Failure behaviors of anisotropic shale with a circular cavity subjected to uniaxial compression

Journal of Rock Mechanics and Geotechnical Engineering
Layered rock formations are frequently encountered during the excavation of underground structures. The stability of such structures is influenced not only by the stress concentration caused by the cavities in the strata but also by the anisotropy of the
Xianhui Feng, Huilin Liu, Peitao Wang, Shichao Zhang, Quanqi Zhu, Chun'an Tang, Yaxing Leng   +6 more
doaj   +1 more source

Crack growth properties and AE phenomena in notched hard/soft layered rock under punch shear test; experimental test and numerical simulation

Results in Engineering
Facing layered rocks is common in various mining geotechnical and tunnel engineering projects. These layers vary in thickness and are separated by bedding planes, which can either be cemented together or distinct from each other.
Seyed Davoud Mohammadi, Rahim Mortezaei, Vahab Sarfarazi, Arsham Moayedi Far   +3 more
doaj   +1 more source

XeraBorg: Neural Control of Tail‐Flick Escape for Backward Propulsion in Cyborg Crayfish

Advanced Robotics Research, EarlyView.
This work presents the first controlled tail‐flick propulsion method for the cyborg Cherax quadricarinatus. Comprehensive experiments establish a foundational framework for using the crayfish's natural escape mechanism as a locomotion strategy, expanding its potential as an underwater and amphibious mobile robot.
H. Nhan Le, Oscar J. Davis, Lachlan Fitzgerald, Robbie Wilson, Christofer Clemente, P. Ross McAree, T. Nho Do, T. Thang Vo‐Doan   +7 more
wiley   +1 more source

Remembrance and Reconciliation: Understanding the Little Rock Crisis of 1957 video recordings, 1997

, 1997
Collection contains nine videocassette tapes recording the public symposium, "Remembrance and Reconciliation: Understanding the Little Rock Crisis of 1957," held on 1997 September 26-27, at the University of Arkansas at Little Rock. Participants included:
University of Arkansas at Little Rock.
core   +1 more source