Results 161 to 170 of about 233,397 (304)

Resonance‐induced restoration of rock permeability degraded by heavy components of crude oil

Deep Underground Science and Engineering, EarlyView.
Resonance‐induced changes occur in filtration properties of sedimentary rocks in crude paraffin oil flow under acoustic vibrations. Experimental data on (a) pressure drop; (b) permeability; (c) pressure at the rock inlet; and (d) pressure at the rock outlet are presented.
Evgenii Riabokon, Qian Yin, Mikhail Guzev, Mikhail Turbakov, Evgenii Kozhevnikov, Nadezhda Riabokon, Ivan Panteleev   +6 more
wiley   +1 more source

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

Pilot Test of Coiled Tubing Pinpoint Fracturing Technology in Thick Oil Reservoir

Shiyou jixie
To address the challenges of difficult remaining oil potential tapping， long operation period， high cost and poor environmental adaptability of conventional hydraulic jet fracturing technology for thick oil layer in production tail of an oilfield， a ...
Sun Yong, Yan Xu, Lan Chengyu, Jia Yanxue, Xu Huawei, Yang Yufeng, Gao Yuan   +6 more
doaj  

Substantial aircraft contrail formation at low soot emission levels. [PDF]

Nature
Voigt C, Märkl R, Sauer D, Dischl R, Renard C, Seeliger K, Yu F, Kaufmann S, Bräuer T, Jurkat-Witschas T, Le Chenadec G, Moreau J, Requena-Esteban E, Bonne N, Vals M, Roche A, Zelina J, Dörnbrack A, Eirenschmalz L, Heckl C, Horst E, Lichtenstern M, Marsing A, Neumann G, Roiger A, Scheibe M, Stock P, Giez A, Eckel G, Le Clercq P.   +29 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

Simultaneous oil recovery and hydrocarbon degradation in aged oily sludge via jet cavitation. [PDF]

Ultrason Sonochem
Yang H, Yu H, Wang D.
europepmc   +1 more source

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

Carbon emission assessment of tunnel infrastructures: From construction to operation

Deep Underground Science and Engineering, EarlyView.
This study develops a lifecycle carbon accounting framework for tunnel infrastructures, covering design, construction, operation, maintenance, and dismantling. Applied to a subsea tunnel case, the framework reveals the carbon emission distribution among four typical tunnel types and highlights potential carbon offset methods for low‐carbon tunnel ...
Luyuan Long, Wout Broere, Xuehui Zhang, Tian Xia, Richard de Nijs   +4 more
wiley   +1 more source

Analysis of nozzle for the external casing perforation tool and experimental study on AWJ. [PDF]

Sci Rep
Ren X, Zhu W, Che Y, Yao J.
europepmc   +1 more source

Novel PTFE/PI Nanofibrous Composite Membranes Enabling High‐Flux Desalination and Durable Anti‐Scaling in Membrane Distillation

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Schematic illustration comparing the MD performance of pure PTFE NFMs and PTFE/PI NFMs. Polytetrafluoroethylene (PTFE) membranes are widely recognized for their low surface energy and strong resistance to salt accumulation in membrane distillation (MD) processes.
Yuan Liu, Guangda Wang, Xiaoying Wei, Xuefeng Zhu, Rujia Zou, Zheyi Meng, Liping Zhu, Meifang Zhu   +7 more
wiley   +1 more source