Results 141 to 150 of about 19,463 (248)

Hybrid source arrangement for active control of noise through apertures at oblique incidences: a preliminary investigation

, 2018
Active control solutions are effective in attenuating noise propagating into a room through an open aperture, whilst maintaining natural ventilation. When the noise is normally incident, an evenly-distributed planar array of control sources across an ...
Elliott, Stephen, Shi, Dongyuan, Gan, Woon Seng, Lam, Bhan   +3 more
core  

Permeability of granite from a shallow buried mountain pipe gallery tunnel under unloading confining pressure

Deep Underground Science and Engineering, EarlyView.
Triaxial compression tests under unloading confining pressure conditions were conducted to systematically analyze the permeability behavior of granite retrieved from the different classification surrounding rocks. Abstract The rock mass within mountain tunnels undergoes complex changes in permeability, strength, and deformation during tunneling ...
Xiaoyan Zhang, Yonghua Ye, Jianping Zuo, Baojiang Han, Weigang Jiao   +4 more
wiley   +1 more source

Labor intensity as an independent risk factor for frailty in older farmers: evidence from a multi-region survey in Guizhou, China. [PDF]

Front Public Health
Yan Y, Zhou L, Huang S, He F, Zhao Y, Gong J, Yang B, Li A, Yang J, Zhang R, Huang Y, Xia H, Shi X, Zhou J.   +13 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

Auto-arrange buildings in urban planning with DQN. [PDF]

Sci Rep
Lin P, Shi G, Hu C, Zhang J, Huang Y.
europepmc   +1 more source

Caving‐enhanced geothermal system overwhelms fracturing‐ and pipe‐enhanced geothermal system in heat extraction

Deep Underground Science and Engineering, EarlyView.
Our study reveals that caving‐enhanced geothermal systems (C‐EGS) with adequately fractured reservoirs achieve optimal heat extraction by minimizing preferential flow paths, while conventional fracturing (F‐EGS) and pipe‐based (P‐EGS) systems suffer accelerated thermal drawdown.
Fangchao Kang, Tianjiao Li, Yingchun Li, Jinlong Men, Chun'an Tang   +4 more
wiley   +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

<i>In Vivo</i> Confocal Microscopy as a Prognostic Indicator in <i>Acanthamoeba</i> Keratitis: Insights from a Retrospective Study. [PDF]

Pathogens
Han Y, Wei Y, Chen Q, Pang J, Shi Q, Liang Q.   +5 more
europepmc   +1 more source

Basis construction for the Shi and Catalan arrangements

Basis construction for the Shi and Catalan arrangements
(主査) 教授 寺尾 宏明, 教授 齋藤 睦, 准教授 吉永 正彦 理学院（数学専攻）
openaire  

Research progress and current status of dynamic wave propagation characteristics in rock mass: A review

Deep Underground Science and Engineering, EarlyView.
This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu, Tao Li, Ruiqi Yuan, Yue Li, Bingni Wu, Bo Liu, Zhengding Deng, Galindo Rubén, Fausto Molina‐Gómez   +8 more
wiley   +1 more source