Results 71 to 80 of about 73,555 (300)
Pulsatile ocular blood flow [PDF]
British Journal of Ophthalmology, 1998 Although the eye is the only organ in the body in which blood vessels are readily visible, a technique for the accurate and reproducible measurement of ocular blood flow and its component parts has proved elusive.1 The increasing likelihood of a multifactorial pathogenesis for glaucoma and possible importance of optic nerve head perfusion in the ...
openaire +1 more source
Advanced Materials Technologies, EarlyView.This work presents a fully synthetic, 3D‐printed dynamic heart model with left‐side anatomy featuring sutured mitral valve chordae tendineae analogs, embedded actuators for physiologic wall contraction, and customized flexible pressure sensors for the left ventricle.
Alejandro Guillen Obando +7 more
wiley +1 more source
Hemodynamics of Stent Implantation Procedures in Coronary Bifurcations: an in vitro study [PDF]
, 2016 Stent implantation in coronary bifurcations presents unique challenges and currently there is no universally accepted stent deployment approach. Despite clinical and computational studies, to date, the effect of each stent implantation method on the ...
Brindise, Melissa C. +4 more
core +5 more sources
Magnetic Field Driven Microrobot Based on Hydrogels
Advanced Robotics Research, EarlyView.Hydrogel‐based magnetic microrobots synergize remote magnetic control with the biocompatibility of flexible hydrogels, emerging as promising tools for minimally invasive biomedicine. This enables remotely controllable, untethered navigation within complex biological microenvironments.
Juncai Song, Yubing Guo
wiley +1 more source
Pulsatile Flow Patterns in Distensible Tubes [PDF]
Circulation Research, 1966 Pulsatile flow patterns in polyvinyl tubes were visualized by means of streaming birefringence and compared with those obtained using an electromagnetic flowmeter. At low flow rates the frequency spectrum of the birefringence pattern is similar to that of volume flow.
E O, Attinger +3 more
openaire +2 more sources
Advanced Robotics Research, EarlyView.Micro‐ and nanorobots for targeted thrombolysis. This perspective elaborates on the clinical indication of blood clot disorders and current limitations for treatment. As a novel, alternative solution, micro‐ and nanorobots can be used to treat and break down thrombi.
Joshua M. Mesfin +3 more
wiley +1 more source
The influence of flow parameters on the transition to turbulence in pulsatile flow
EPJ Web of Conferences, 2014 The paper is focused on the experimental investigation of the flow parameters influence (stationary component of flow, frequency, amplitude) on the transition to turbulence in pulsatile flow in a straight square channel.
Schmirler M. +4 more
doaj +1 more source
Vortex dynamics under pulsatile flow in axisymmetric constricted tubes [PDF]
, 2019 An improved understanding of how vortices develop and propagate under pulsatile flow can shed important light on the mixing and transport processes including the transition to turbulent regime occurring in such systems.
Barrere, Nicasio +4 more
core +2 more sources
Sleep Alters the Velocity of Physiological Brain Pulsations in Humans
Advanced Science, EarlyView.Sleep alters I/CSF oscillatory flow, driven by increased respiratory (29%) and vasomotor pulsation (21%) velocities, while cardiovascular pulsations decreased by (22%). Velocity is quantified using optical flow analysis of MREG data. Spectral power increases alongside these pulsations (spatial correlation, r = 0.35 and r = 0.39, respectively ...
Ahmed Elabasy +13 more
wiley +1 more source