نتایج جستجو برای: laser doppler velocimeter
تعداد نتایج: 224815 فیلتر نتایج به سال:
An experimental comparison method is proposed for theverification of mean flow and turbulence measurements obtainedwith a three-dimensional laser Doppler velocimeter system. Suchmeasurements can include large errors caused by problems uniqueto three-dimensional systems. Direct comparisons of laser and hotcross-wire measurements obtained in two-dimensional flows, as isthe...
There is currently no ideal method for concurrently assessing intraluminal pressures and flows in humans with high temporal resolution. We have developed and assessed the performance of a novel fiber-optic laser-Doppler velocimeter, mounted in a multichannel manometric assembly. Velocimeter recordings were compared with concurrent fluoroscopy and manometry following 50 barium swallows in health...
The analysis of turbulent flow signals irregularly sampled by a Laser Doppler velocimeter is assessed by means of ANNs. This technique has been proven to correctly predict the time evolution of turbulent signals. In this paper we are taking advantage of this ability to obtain models of unevenly sampled signals and thus be able to reconstruct and resample them at a regular pace in order to allow...
A new laser-Doppler velocimeter (LDV) for high speed flow measurements (three-dimensional flows with speeds greater than 610 m/s) is being developed based in-part upon an existing low speed instrument capable of high resolution, near surface velocity vector measurements. The key technology for the instrument is a sub-miniature laser-Doppler velocimeter (SMLDV); a similar low-speed version of wh...
Synthetic pyrethroids are neurotoxic insecticides with a low mammalian toxicity. Prior investigations have found these agents to be neither cutaneous irritants nor sensitisers. Clinically demonstrable inflammation, as judged by erythema, oedema, or vesiculation, has not been apparent. Nevertheless, paraesthesia does result from cutaneous exposure. In this investigation technical grade flucythri...
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