Results 31 to 40 of about 41,901 (252)
OCT methods for capillary velocimetry [PDF]
Biomedical Optics Express, 2012 TO DATE, TWO MAIN CATEGORIES OF OCT TECHNIQUES HAVE BEEN DESCRIBED FOR IMAGING HEMODYNAMICS: Doppler OCT and OCT angiography. Doppler OCT can measure axial velocity profiles and flow in arteries and veins, while OCT angiography can determine vascular morphology, tone, and presence or absence of red blood cell (RBC) perfusion.
Srinivasan, Vivek Jay +6 more
openaire +4 more sources
Considerations When Applying Large-Scale PIV and PTV for Determining River Flow Velocity
Frontiers in Water, 2021 Large-scale image velocimetry is a novel approach for non-contact remote sensing of flow in rivers. Research within this topic has largely focussed on developing specific aspects of the image velocimetry work-flow, or alternatively, testing specific ...
Martin J. Jolley +3 more
doaj +1 more source
Clog-Free Trilobite Filtration: Tunable Flow Setup and Velocity Measurements
Micromachines, 2020 The ability to separate and filter out microscopic objects lies at the core of many biomedical applications. However, a persistent problem is clogging, as biomaterials stick to the internal chip surface and limit device efficiency and liability. Here, we
Endre Joachim Mossige, Atle Jensen
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Optics Letters, 1998 A method is reported for time- and space-resolved nonintrusive velocimetry of high-speed gas flows by measurement of the Doppler shift of light scattered from a laser-induced thermal grating. The principle is demonstrated by use of a pulsed frequency-doubled Nd:YAG laser to induce a thermal grating in NO(2) seeded into an argon flow.
Walker, D, Williams, R, Ewart, P
openaire +2 more sources
APL Photonics, 2023 Laser Doppler velocimetry has developed as a powerful enabling technology within a myriad of realistic scenarios. While existing toolkits that exploit optical vortex allow access to longitudinal linear velocimetry and/or transverse rotational velocimetry
Yanxiang Zhang +3 more
doaj +1 more source
Particle image velocimetry technique for analysis of retractibility in woods of Pinus elliottii
Maderas: Ciencia y Tecnología, 2021 The aim of this work was to verify the ability to use the Particle Image Velocimetry technique for measurements of dimensional variations resulting from wood retractability of Pinus elliottii wood, initially saturated and with the surface marked with ...
Eduardo Hélio de Novais Miranda +4 more
doaj +1 more source
Drones, 2019 Stream velocity and flow are very important parameters that must be measured accurately to develop effective water resource management plans. There are various methods and tools to measure the velocity but, nowadays, image-based methods are a promising ...
Paschalis Koutalakis +2 more
doaj +1 more source
Squids use multiple escape jet patterns throughout ontogeny
Biology Open, 2020 Throughout their lives, squids are both predators and prey for a multitude of animals, many of which are at the top of ocean food webs, making them an integral component of the trophic structure of marine ecosystems.
Carly A. York +3 more
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Maderas: Ciencia y Tecnología, 2021 Non-destructive techniques for characterizing materials in-service have been increasing in importance. Thus, it is relevant to assess the potential of non-destructive techniques for solid materials. This work aimed to determine the modulus of elasticity
Eduardo Hélio de Novais Miranda +5 more
doaj +1 more source
Image registration algorithm for molecular tagging velocimetry applied to unsteady flow in Hele-Shaw cell [PDF]
, 2013 In order to develop velocimetry methods for confined geometries, we propose to combine image registration and volumetric reconstruction from a monocular video of the draining of a Hele-Shaw cell filled with water.
Brunet, Florent +5 more
core +1 more source