Results 211 to 220 of about 465,669 (314)

Investigation on hard‐rock breaking performance and auxiliary mechanism of picks assisted with both‐sided high‐pressure water jets

Deep Underground Science and Engineering, EarlyView.
This paper investigates the high‐pressure water jet‐pick combined rock‐breaking mode (HPC), which employs high‐pressure water jets to precut grooves on both sides of the picks. The rock‐breaking patterns and performance of the HPC method are obtained, and the auxiliary rock‐breaking mechanism of water jet grooving is revealed.
Jingjing Lu, Jiancheng Xiao, Hui Zhou, Xiao Ma, Congcong Hou, Jian Cui, Fujian Yang   +6 more
wiley   +1 more source

A Pump-Free, Hydraulic-Amplification Oscillatory Microfluidic Device for Continuous Particle and Cell Manipulation. [PDF]

Adv Sci (Weinh)
Liu Y, Liang M, Xu S, Yan S.
europepmc   +1 more source

An assessment of stress and production rate of sucker rod heat pipes in oil well pumping system

Deep Underground Science and Engineering, EarlyView.
The sucker rod pumping system is the preferred oil extraction technique. The concept about equipping the hollow vacuum space in solid sucker rods with heat pipe has been scrutinized in terms of stress and oil production evaluation. Abstract The implementation of the heat pipe concept in sucker rods for oil pumping systems negates the requirement for an
R. S. Anand, Ang Li, Wenbo Huang, Juanwen Chen, Qingshan Ma, Fangming Jiang   +5 more
wiley   +1 more source

Research on precision control strategy of electro-hydraulic proportional system for shotcrete robotic arm based on PID-MPC. [PDF]

Sci Rep
Zhang K, Zhang H, Zhang Z, Tian D, Tian S, Liu X, Ma B, Zhang P, Du M, Meng X.   +9 more
europepmc   +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

Impact of adjustable resistance clamps on the in-vitro hemolysis assessment of blood pumps. [PDF]

Sci Rep
Narayanaswamy K, He X, Schmitt L, Stoiber M, Röhrich M, Zimpfer D, Granegger M.   +6 more
europepmc   +1 more source

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

A Prospective Clinical Study to Evaluate Safety and Performance of an Intra-Surgical Hydraulic Distractor During Spinal Surgeries. [PDF]

Med Devices (Auckl)
Bornemann R, Himstedt J, Boszczyk B, Bowald S, Sander K, Mikulowski S, Farhoud HMES, Pflugmacher R.   +7 more
europepmc   +1 more source

Motion planning and control of an installation robot for attitude adjustment of arc parts in underground shield tunneling

Deep Underground Science and Engineering, EarlyView.
Inspired by spiders, the multilegged walk‐through assembling robot for arc parts achieves high‐precision synchronous control under heavy loads through dual‐layer hydraulic pose dynamics modeling and hierarchical pressure optimization, significantly enhancing shield tunneling assembly efficiency and precision.
Quan Xiao, Guofei Xiang, Liang Liao, Lai Wei, Hongli Wang, Songyi Dian   +5 more
wiley   +1 more source

Terahertz metamaterial liquid detector optimized by deep learning. [PDF]

Sci Rep
Li X, Wu Z, Zhang Y, Li B.
europepmc   +1 more source