Results 231 to 240 of about 20,297 (303)

Acoustic‐driven surface cleaning with millimeter‐sized bubbles at translational resonance

open access: yesDroplet, EarlyView.
Time‐lapse visualization comparing bubble trajectories. The top panel (0 Hz) shows a bubble's linear path under no acoustic forcing, while the bottom panel (50 Hz) demonstrates the oscillatory motion induced by acoustic waves at a resonance mode. This mechanism holds promising potential for applications such as surface cleaning.
Yan Jun Lin   +2 more
wiley   +1 more source

Spinal Compression Fracture Mechanisms in Mountain Biking: An Accident Reconstruction Approach. [PDF]

open access: yesGlobal Spine J
Bonte S   +5 more
europepmc   +1 more source

Enhancing hydrogen evolution reaction by harnessing bubble dynamics regulation: Principles, methods, and outlook

open access: yesDroplet, EarlyView.
Bubble dynamics pose critical bottlenecks to hydrogen evolution reaction efficiency, causing active site isolation, increased ohmic resistance, and concentration overpotential, especially at high current densities. This review comprehensively summarizes passive and active bubble manipulation strategies, elucidates their underlying principles, and ...
Ziwei Guo   +10 more
wiley   +1 more source

Influence of impeller configuration and operating parameters on granular mixing: a DEM investigation. [PDF]

open access: yesSci Rep
Zhou ZH   +9 more
europepmc   +1 more source

Dynamic manipulation of multiphase fluid in microgravity using photoresponsive surfactant

open access: yesDroplet, EarlyView.
Photo‐surfactant‐driven bubble migration experiment was conducted onboard the International Space Station to isolate Marangoni flow from gravity and natural convection. The experiment identifies an optimal bubble size leading to the highest migration velocity, which is validated with a comprehensive numerical model. Abstract Control of bubble motion is
Xichen Liang   +9 more
wiley   +1 more source

Review and prospects of shear test of bolted rock joints

open access: yesDeep Underground Science and Engineering, EarlyView.
The laboratory shear test equipment, test method, and numerical simulation of bolted rock joints were summarized. The shortcomings and limitations of the current research were analyzed, and the research prospects were proposed. Abstract Rock bolting is a critical approach in geotechnical engineering for supporting weak rocks.
Shulin Ren   +4 more
wiley   +1 more source

Experimental study on burning rate and flame geometry in construction tunnel fires under high geothermal conditions

open access: yesDeep Underground Science and Engineering, EarlyView.
Abstract As tunnel construction advances in lengths and depths, the construction of tunnels in high geothermal environments has become increasingly common, raising significant fire risks. In this study, a 1:20 scale model tunnel test platform was constructed to investigate the effects of a high geothermal environment on fire behavior in tunnels during ...
Xiaoxian Fei   +6 more
wiley   +1 more source

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