Results 41 to 50 of about 29,054 (216)

Laser Doppler holographic microscopy in transmission: application to fish embryo imaging [PDF]

open access: yes, 2014
We have extended Laser Doppler holographic microscopy to transmission geometry. The technique is validated with living fish embryos imaged by a modified upright bio-microcope.
Alexandre, Daniel   +2 more
core   +3 more sources

Pre‐operative transcranial Doppler ultrasound assessment of cerebral collateral circulation in children undergoing veno‐arterial extracorporeal membrane oxygenation or cardiac surgery

open access: yesJournal of Medical Radiation Sciences, EarlyView.
A pre‐cannulation survey of the circle of Willis (CoW) using transcranial Doppler (TCD) ultrasound was implemented to assess cerebral collateral circulation in children undergoing VA ECMO or cardiac surgery with cervical cannulation. The technique, in use since 2019, employs high‐end ultrasound platforms to assess brain morphology, haemorrhage and ...
Tristan Reddan   +3 more
wiley   +1 more source

Upconversion Photonic Doppler Velocimetry Based on Stimulated Brillouin Scattering

open access: yesPhotonics
Optical up-conversion photonic Doppler velocimetry (PDV) based on stimulated Brillouin Scattering (SBS) with an all-fiber link structure is proposed in this article. Because SBS limits the laser power transmitted by a fiber over long distances, the probe
Long Chen   +11 more
doaj   +1 more source

TEDI: the TripleSpec Exoplanet Discovery Instrument

open access: yes, 2007
The TEDI (TripleSpec - Exoplanet Discovery Instrument) will be the first instrument fielded specifically for finding low-mass stellar companions. The instrument is a near infra-red interferometric spectrometer used as a radial velocimeter.
Edelstein, Jerry   +11 more
core   +1 more source

A possible new approach in the prediction of late gestational hypertension: The role of the fetal aortic intima-media thickness [PDF]

open access: yes, 2017
The aim was to determine the predictive role of combined screening for late-onset gestational hypertension by fetal ultrasound measurements, third trimester uterine arteries (UtAs) Doppler imaging, and maternal history.
Camerin, Martina   +4 more
core   +1 more source

Design and Statistical Optimization of PLA Organoclay‐Based Dispersions for Recyclable Packaging Paper

open access: yesPolymer Engineering &Science, EarlyView.
Through experimental design, polylactic acid (PLA)—organoclay dispersions were optimized to produce biobased coatings that have a high barrier potential while maintaining repulpability, promoting sustainable packaging solutions. ABSTRACT Performance and recyclability of paper coatings depend on precise control of polymer, surfactant, filler ...
Abdenour Chenni   +7 more
wiley   +1 more source

Investigation into the selection of viewing configurations for three-component planar Doppler velocimetry measurements. [PDF]

open access: yes, 2007
A method for the calculation of three orthogonal velocity components in planar Doppler velocimetry (PDV) using four or more measured velocity components (to the three typically used) is presented.
Charrett, Thomas O. H.   +2 more
core  

A method for three-dimensional particle sizing in two-phase flows [PDF]

open access: yes, 2004
A method is devised for true three-dimensional (3D) particle sizing in two-phase systems. Based on a ray-optics approximation of the Mie scattering theory for spherical particles, and under given assumptions, the principle is applicable to intensity data
Gharib, Morteza, Pereira, Francisco
core   +1 more source

Imaging laser Doppler velocimetry [PDF]

open access: yesExperiments in Fluids, 2011
Experiments in Fluids, 52 (4)
Meier, Alexander, Roesgen, Thomas
openaire   +3 more sources

Using Fine Sediment Monitoring to Quantify Sand Loading Over Time

open access: yesRiver Research and Applications, EarlyView.
ABSTRACT Riverine sand loading can lead to geomorphic change, impacting river processes like lateral migration and vertical aggradation or degradation. Yet many sediment monitoring programs track only fine sediment measurable as total suspended solids (TSS). Here, we assess the ability for TSS data to be used to determine sand loading.
Andrew P. Kasun, Karen B. Gran
wiley   +1 more source

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