Results 21 to 30 of about 85,399 (116)
Yantu gongcheng xuebao, 2022 The friction characteristics of the column-soil interface is important to the load transfer mechanism of geo-encased stone columns. In this study, model tests are conducted using a large direct shear device to investigate the effects of the normal stress,
ZHANG Ling 1, 2, 3, XU Ze-yu 1, 2, 3, YAO Pan 1, 2, 3, ZHAO Ming-hua 1, 2, 3, CHEN Long 1, 2, 3
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Mechanistic analysis of TBM cutterhead-ground interaction under mud build-up effect
Frontiers in Earth ScienceIntroductionIn tunnel construction using TBMs, the complex mineral composition of strata and hydrogeological conditions often induce cutterhead mud build-up, which results in sharp increases in torque and thrust, thereby reducing excavation efficiency ...
Renchong Wang +6 more
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Effects of Aperture Ratio and Aspect Ratio on High-Speed Water-Entry Stability of Hollow Projectiles
Journal of Marine Science and EngineeringThe oblique water-entry stability of hollow projectiles with different aperture ratios (d/D) and aspect ratios (L/D) is investigated numerically in this study.
Jianqiu Tu +5 more
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Nihon Kikai Gakkai ronbunshu, 2017 Karman vortex shedding occurs when the gas passes through the duct with tube bank of the heat exchangers, such as gas heaters and boilers. Very high level sound in called “self-sustained tones” occurs due to the interference of the vortex and the sound ...
Kunihiko ISHIHARA
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Frontiers in Physics, 2021 Electrowetting display (EWD) device is a new type of reflective optoelectronic equipment with paper-like display performance. Due to the oil backflow phenomenon, it is difficult for pixels to be maintained a stable aperture ratio, so the grayscale of ...
Taiyuan Zhang, Yong Deng
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Journal of Asian Architecture and Building EngineeringEnclosed-type of educational buildings, which are commonly seen in the campus nowadays, suffer from poor natural ventilation, causing higher energy consumption from mechanical ventilation as well as poorer indoor air quality.
Mo Li, Yao Li, Bingyi Zhang, Linzi Tao
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Effect of the Aperture Ratio on the Impedance Bandwidth of an Aperture Coupled Microstrip Antenna [PDF]
Radioengineering, 2018 The effect of the aperture ratio on the impedance bandwidth of an aperture coupled microstrip antenna (ACMA) is investigated according to the coupling strength from a microstrip feed line to a patch.
Jae-Hyun Kim, Boo-Gyoun Kim
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The Power and Efficiency Analyses of the Cylindrical Cavity Receiver on the Solar Stirling Engine
Energies, 2020 The technique of solar dish and Stirling engine combination is the most challenging and promising one. For the efficient conversion of the externally concentrated heat to the usable power, we studied the influences of the wall temperature, inclination ...
Ji-Qiang Li +2 more
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Design of Truncated Hyperboloid Solar Concentrator by Using Zemax Program
Ibn Al-Haitham Journal for Pure and Applied Sciences, 2022 A hyperboloid solar concentrator (HSC) was designed with a truncation angle side to the entrance aperture by simulation in the Zemax Optical Design software.
Hassanein Nouri Hamza, Alaa Badr Hasan
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Rule for scaling shoulder rotation angles while walking through apertures. [PDF]
PLoS ONE, 2012 BACKGROUND: When an individual is trying to fit into a narrow aperture, the amplitude of shoulder rotations in the yaw dimension is well proportioned to the relative aperture width to body width (referred to as the critical ratio value).
Takahiro Higuchi +2 more
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