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John Davidson, Sangjin Ryu Journal of Visualization pp 1-9 First online: 30 May 2016
Soap bubble blowing has long been an amusement for humans, and the process involves pinch-off similarly to liquid drops and gas bubbles. ... 2.4.2 Measurement using a Pitot tube. To validate the image-based speed measurement, we measured the airflow speed at the center of the nozzle outlet (U e ) using a Pitot static tube (PAA-8-KL, United Sensor Corp.) with pressure transducers (Pulse Duplicator, ViVitro Labs). ...
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Visit SourceNg, Kim-Gau; Ting, Choon-Meng; Yeo, Joon-Hock; Sim, Kwang-Wei; Peh, Wee-Leng; Chua, Ngak-Hwee; Chua, Ngak-Kwong; Kwong, Frank; Blood Pressure Monitoring: 9, Issue 3; 149-165.
The MediWatch is a wrist-mounted noninvasive blood pressure monitor designed to capture the radial pulse waveform using arterial tonometry and yield blood pressure measurements when the waveform is calibrated. An early prototype of this monitor uses a pulse-sensing system with a cylindrical plunger to applanate the radial artery. This prototype was evaluated against simulated blood pressure generated by a pneumatic pressure-pulse generator.
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Visit SourceAcute and Chronic Swine Rete Arteriovenous Malformation Models: Hemodynamics and Vascular Remodeling
A. K. Wakhlooa, B. B. Liebera, R. Siekmannc, D. J. Ebera and M. J. Gounisa; American Journal of Neuroradiology: 26; 1702-1706.
Liquid embolic agents are increasingly gaining importance in the embolization of cerebral arteriovenous malformations (AVMs). Currently, the most commonly used agent is N-butyl 2-cyanoacrylate (NBCA). Various NBCA mixtures, arterial hypotension, and Valsalva maneuver (increased positive end-expiratory pressure) during the injection of the acrylate have been used to address hemodynamic and architectural variations of an AVM; however, the precise in vivo polymerization, distribution, and kinetics of NBCA mixtures are unknown. We investigated the effect of different acrylate/Lipiodol mixtures and the addition of glacial acetic acid (GAA) on the penetration, dispersion, and injection force of NBCA.
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Visit SourceMorteza Gharib and Masoud Beizaie; Annals of Biomedical Engineering: 31, Issue 6; 678-685; 2003.
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Visit SourceZhang, Pei; Yeo, Joon Hock; Hwang, N H. C.; ASAIO Journal: 52, Issue 4; 391-397; 2006.
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Visit SourceZhang, Pei; Yeo, Joon Hock; Qian, Ping; Hwang, Ned H. C.; ASAIO Journal: 53, Issue 5; 530-536; 2007.
The particle image velocimetry technique was used to study the shear field across a transparent mechanical heart valve model in one cardiac cycle. Shear stress was continuously increased until peak systole and high turbulent stress was observed at the orifice of the central channel and also around the occluder trailing tips.
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