Results 151 to 160 of about 11,763 (288)

Critical expansion points: Mechanical signs of surrounding rock instability

Deep Underground Science and Engineering, EarlyView.
This study proposes the Rock Bearing‐Expansion Model (RockBEM) with critical expansion points (CEPs) to quantify post‐peak damage stages in deep‐buried rock masses via plane strain compression test (PSCT). CEP hysteresis&interval ratios reveal bearing performance dynamics and failure severity, advancing mechanistic insights into deep underground rock ...
Jiaqi Wen, Chang Deng, Haijun Wang, Lei Tang, Jihong Yu   +4 more
wiley   +1 more source

Study of the energy efficiency of various drive systems of an innovative implantable left ventricular assist device. [PDF]

Sci Rep
Jasinski R, Tesch K, Dabrowski L, Rogowski J.   +3 more
europepmc   +1 more source

Multiple injection techniques to stimulate complex fracture networks in coal reservoirs: A case study on gas disaster reduction of subsurface coal mine in southwest China

Deep Underground Science and Engineering, EarlyView.
An experimental device for physical simulation of hydraulic fracturing, comprising: a load‐bearing mechanism with multiple interconnected plates that collectively form an sample chamber; a load‐generating mechanisms, with multiple load‐generating mechanisms arranged within the experimental chamber.
Delei Shang, Farui Shi, Jun Lu, Minghui Li, Cunbao Li, Heping Xie   +5 more
wiley   +1 more source

Multi-State Recognition of Electro-Hydraulic Servo Fatigue Testers via Spatiotemporal Fusion and Bidirectional Cross-Attention. [PDF]

Sensors (Basel)
Huang G, Bai S, Yang X, Gao X, Liu P.
europepmc   +1 more source

Automatic Regulators and Servo Mechanisms [PDF]

Nature, 1947
openaire   +1 more source

Study on the composite fracture characteristics of filling and reinforcing cracked rock mass after high temperature damage

Deep Underground Science and Engineering, EarlyView.
Cement infill shares compressive and shear stresses during loading, while interfacial friction hinders crack propagation and reduces stress concentration, improving the rock's load‐bearing capacity. Failure modes vary with crack inclination. Unfilled specimens show four modes.
Shihao Yuan, Qiang Sun, Jianjun Hu, Liwei Zhang, Jishi Geng   +4 more
wiley   +1 more source

Modeling and experimental validation of bolt–grout bond–slip behavior for deep underground excavation support

Deep Underground Science and Engineering, EarlyView.
A novel shear‐lag model, validated by pull‐out tests, incorporates a constant bond stress stage to predict the complete load–displacement response of grouted rock bolts, providing a new tool for optimizing anchorage length and material toughness in deep underground engineering. Abstract The stability of rock masses in deep underground excavations, such
Wenhui Bian, Xiaohui He, Kexue Wang, Yufei Wu, Guoxin Wang, Shaochen Zhang, Jun Yang   +6 more
wiley   +1 more source

A Soft Exoskeleton for Hand Grip Augmentation and Fall Prevention Assistance in Tower Climbing. [PDF]

Biomimetics (Basel)
Fu S, Chen Z, Gan L, Ling J, Huang H, Chen J, Zhou Y.   +6 more
europepmc   +1 more source

Servo-mechanism Fundamentals

Nature, 1948
openaire   +2 more sources

Prospective evaluation of a seizure detection wearable device for timely interventions in an epilepsy monitoring unit

Epilepsia, EarlyView.
Abstract Objective This study aimed to evaluate the real‐world performance of a wrist‐worn seizure detection device for timely clinical interventions within an epilepsy monitoring unit (EMU). Methods We conducted a prospective observational study involving patients admitted to the EMU at a tertiary care center.
Amirhossein Jahani, Daniel Alejandro Galindo Lazo, Isabel Sarzo Wabi, Oumayma Gharbi, Manon Robert, Juan Pablo Millan, Gianluca D'onofrio, Alexis Robin, Dang K. Nguyen, Elie Bou Assi   +9 more
wiley   +1 more source