Articles with "pressure wave" as a keyword



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A machine learning method correlating pulse pressure wave data with pregnancy

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Published in 2019 at "International journal for numerical methods in biomedical engineering"

DOI: 10.1002/cnm.3272

Abstract: Pulse feeling , representing the tactile arterial palpation of the heartbeat, has been widely used in traditional Chinese medicine (TCM) to diagnose various diseases. The quantitative relationship between the pulse wave and health conditions however… read more here.

Keywords: pressure wave; medicine; machine learning; pregnancy ... See more keywords
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Effect of ambient wind on pressure wave generated by high-speed train entering a tunnel

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Published in 2017 at "Journal of Central South University"

DOI: 10.1007/s11771-017-3550-5

Abstract: Using three-dimensional, unsteady N-S equations and k-ε turbulence model, the effect of ambient wind on the pressure wave generated by a high-speed train entering a tunnel was studied via numerical simulation. Pressure changes of the… read more here.

Keywords: pressure wave; wind; wind pressure; ambient wind ... See more keywords
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Influence of the geometry of equal-transect oblique tunnel portal on compression wave and micro-pressure wave generated by high-speed trains entering tunnels

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Published in 2018 at "Journal of Wind Engineering and Industrial Aerodynamics"

DOI: 10.1016/j.jweia.2018.05.003

Abstract: Abstract Pressure gradient and micro-pressure wave induced by a high-speed train entering a tunnel were investigated for the parametric design of equal-transect oblique tunnel portal. A moving model experimental test was conducted to verify the… read more here.

Keywords: pressure wave; micro pressure; oblique tunnel; geometry ... See more keywords
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Experimental study on the pressure wave attenuation across gas-solid fluidized bed by single bubble injection

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Published in 2017 at "Powder Technology"

DOI: 10.1016/j.powtec.2016.10.051

Abstract: Abstract In this paper attenuation of the pressure wave has been studied for understanding the nature of pressure wave propagation in a gas-solid fluidized bed. The important aspect of the present work is to obtain… read more here.

Keywords: pressure wave; wave attenuation; fluidized bed; pressure ... See more keywords
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Pressure wave attenuation in agas solid fluidized bed: Effects of particles size, density and the electrostatic charge

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Published in 2018 at "Powder Technology"

DOI: 10.1016/j.powtec.2017.12.036

Abstract: Abstract Simultaneously digital image analysis (DIA) and pressure fluctuation analysis (PFA) have been employed to study the pressure wave attenuation behavior in a gas-solid fluidized bed. The effects of particles size, density, and natural electrostatic… read more here.

Keywords: pressure wave; wave attenuation; electrostatic charge; bed ... See more keywords
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Pressure Wave Velocity in Fluid-Filled Pipes with and without Deposits in the Low-Frequency Range

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Published in 2018 at "Journal of Hydraulic Engineering"

DOI: 10.1061/(asce)hy.1943-7900.0001517

Abstract: AbstractSolid pipeline deposits can be mapped by analyzing reflections of hydraulic pressure pulse waves in the low-frequency range. To determine the amount and position of the deposits, an inverse... read more here.

Keywords: pressure wave; low frequency; frequency range;
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Experimental Study on Acoustic Attenuation Due to Solid Particles

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Published in 2017 at "Combustion Science and Technology"

DOI: 10.1080/00102202.2017.1305367

Abstract: ABSTRACT High-frequency pressure waves present in rocket motors can be dampened by solid or liquid particles produced from their propellant combustion depending on conditions. The present study conducted an experimental investigation into the effects of… read more here.

Keywords: pressure wave; study; pressure waves; helium nitrogen ... See more keywords
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Study and demonstration of pressure wave-based leak detection in a district heating network

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Published in 2018 at "Structure and Infrastructure Engineering"

DOI: 10.1080/15732479.2017.1330892

Abstract: Abstract A district heating network (DHN) is one of the most important infrastructures in cities and towns of countries with colder weather. Citizens generally use DHN services for hot water supply all year round and… read more here.

Keywords: heating network; pressure wave; network; leak detection ... See more keywords
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Prediction of long-term outcomes by arterial stiffness and pressure wave reflections in patients with acute stroke: the Athens Stroke Registry

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Published in 2022 at "Journal of Hypertension"

DOI: 10.1097/hjh.0000000000003244

Abstract: Background and purpose: Stroke patients’ management might be improved by addressing the role of aortic stiffness (carotid-femoral pulse wave velocity: cfPWV) and pressure wave reflections (PWRs, augmentation index: AIx) in their pathogenesis and outcome. We… read more here.

Keywords: long term; pressure wave; aortic stiffness; stiffness ... See more keywords
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Photoplethysmographic imaging and analysis of pulsatile pressure wave in palmar artery at 10 wavelengths

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Published in 2022 at "Journal of Biomedical Optics"

DOI: 10.1117/1.jbo.27.11.116004

Abstract: Abstract. Significance As a noncontact method, imaging photoplethysmography (iPPG) may provide a powerful tool to measure pulsatile pressure wave (PPW) in superficial arteries and extract biomarkers for monitoring of artery wall stiffness. Aim We intend… read more here.

Keywords: pressure wave; pulsatile pressure; analysis; palmar artery ... See more keywords
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Comparison of Turbocharging and Pressure Wave Supercharging of a Natural Gas Engine for Light Commercial Trucks and Vans

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Published in 2021 at "Energies"

DOI: 10.3390/en14175306

Abstract: To increase the efficiency of a natural gas engine, the use of a Miller camshaft was analysed. To avoid a decline in the low-end torque and also in the transient response, a pressure wave supercharger… read more here.

Keywords: pressure wave; engine; gas; natural gas ... See more keywords