Results 21 to 30 of about 10,642 (230)

Instantaneous, three-component planar Doppler velocimetry using imaging fibre bundles [PDF]

open access: yes, 2004
This paper describes a planar Doppler velocimetry (PDV) technique that is capable of measuring the three, instantaneous and time average components of velocity over two spatial dimensions using a single pair of signal and reference cameras.
Nobes, David S.   +2 more
core   +1 more source

3D planar velocity measurements, using Mach-Zehnder interferometric-filter-based planar Doppler velocimetry (MZI-PDV) and imaging fibre bundles [PDF]

open access: yes, 2008
Three component planar flow-field measurements are made using imaging fibre bundles to port different views of the measurement plane, defined by a laser light sheet, to a single imaging head.
Charrett, Thomas O. H.   +7 more
core   +1 more source

Grid turbulence studied by Particle Image Velocimetry [PDF]

open access: yesEPJ Web of Conferences, 2022
We studied the grid-generated turbulence by using Particle Image Velocimetry (PIV) technique. We test on this already well studied flow the new ways of analyzing spatially resolved PIV data, such as the spatial spectra and structure functions. We compare
Duda Daniel   +3 more
doaj   +1 more source

A sex specific approach of ophthalmic and middle cerebral arteries Doppler in smokers

open access: yesScientific Reports, 2021
Vascular dysfunctions can progress and lead to stroke and cardiovascular disease, especially in smokers. The presence of particular vascular changes according to sex has been described and they can be identified by the Doppler method.
Maria Marta B. M. Paes   +2 more
doaj   +1 more source

Single camera 3D planar velocity measurements using imaging fibre bundles and two frequency Planar Doppler Velocimetry (2nu-PDV) [PDF]

open access: yes, 2005
3D planar flow-field measurements are made using multiple imaging fibre bundles to port different views of the measurement plane, defined by a laser light sheet, to a CCD camera.
Charrett, Thomas O. H.   +5 more
core   +1 more source

Doppler changes as the earliest parameter in fetal surveillance to detect fetal compromise in intrauterine growth-restricted fetuses [PDF]

open access: yesSrpski Arhiv za Celokupno Lekarstvo, 2016
Introduction. It is estimated that 3-10% of infants are growth restricted. Growth disturbances may have long-term issues. Doppler allows insight into the fetal response to intrauterine stress. Objective. The aim of this study was to detect fetal
Bansal Saloni   +3 more
doaj   +1 more source

Photonic Doppler velocimetry probe used to measure grain boundaries of dynamic shocked materials [PDF]

open access: yes, 2017
Author Institution: Mission Support and Test Services, LLC; Los Alamos National LaboratorySlides presented at the 2018 Photonic Doppler Velocimetry (PDV) Users Workshop, Drury Plaza Hotel, Santa Fe, New Mexico, May 16-18 ...
Malone, Robert M.   +14 more
core   +1 more source

Triplex Doppler evaluation of the testes in dogs of different sizes

open access: yesPesquisa Veterinária Brasileira, 2014
This study aimed to assess whether there are differences in Doppler velocimetry parameters between different sizes. Twenty dogs were equally divided into small and large groups used in this study.
Mírley B. Souza   +7 more
doaj   +1 more source

Photonic doppler velocimetry [PDF]

open access: yes, 1999
We are developing a novel fiber-optic approach to laser Doppler velocimetry as a diagnostic for high explosives tests. Using hardware that was originally developed for the telecommunications industry, we are able to measure surface velocities ranging from centimeters per second to kilometers per second.
Lowry, M. E.   +4 more
openaire   +2 more sources

Optical frequency standards for gravitational wave detection using satellite Doppler velocimetry

open access: yesNew Journal of Physics, 2015
Gravitational waves (GWs) imprint apparent Doppler shifts on the frequency of photons propagating between an emitter and detector of light. This forms the basis of a method to detect GWs using Doppler velocimetry between pairs of satellites. Operating in
Amar Vutha
doaj   +1 more source

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