Results 41 to 50 of about 12,100,826 (78)

Dual Illumination Planar Doppler Velocimetry using a Single Camera [PDF]

open access: yes, 2003
A Planar Doppler Velocimetry (PDV) illumination system has been designed which is able to generate two beams, separated in frequency by about 600 MHz. This allows a common-path imaging head to be constructed, using a single imaging camera instead of ...
Nobes, David S.   +7 more
core   +1 more source

Quantitative imaging of acoustic reflection and interference [PDF]

open access: yes, 2015
This paper presents a method for time resolved quantitative imaging of acoustic waves. We present the theoretical background, the experimental method and the comparison between experimental and numerical reconstructions of acoustic reflection and ...
Malkin, Rob   +2 more
core   +1 more source

Investigation by laser doppler velocimetry of the effects of liquid flow rates and feed positions on the flow patterns induced in a stirred tank by an axial-flow impeller [PDF]

open access: yes, 2002
The (ow patterns established in a continuously-fed stirred tank, equipped with a Mixel TT axial-(ow impeller, have been investigated bylaser Doppler velocimetry, for a high and a low value of mean residence time—mixing time ratio.
Mavros, Paul   +3 more
core   +1 more source

Alterações do fluxo sanguíneo em artéria umbilical na síndrome hipertensiva gestacional e suas implicações nos resultados neonatais Changes of blood flow in the umbilical artery in hypertensive pregnancy and the implications in the neonatal outcomes

open access: yesRevista Brasileira de Ginecologia e Obstetrícia, 2013
OBJETIVO: Avaliar as características antropométricas, a morbidade e mortalidade de recém-nascidos (RN) prematuros nascidos vivos de mães hipertensas em função da presença ou não de diástole zero (DZ) ou reversa (DR) na doplervelocimetria arterial ...
Marta David Rocha de Moura   +2 more
doaj  

O uso da fluxometria laser doppler como método diagnóstico na avaliação da vitalidade pulpar: uma revisão de literatura

open access: yes, 2023
The evaluation of pulp vitality is essential in the diagnosis and planning of cases in dentistry. Currently, sensitivity tests are commonly used in clinical practice to determine whether the pulp is vital or non-vital.
Costa, Ana Laura Welerson Coelho
core  

The development of an ultrasonic Doppler bed-load velocimeter [PDF]

open access: yes, 1989
Includes bibliography.A instrument has been developed for measuring the velocity of solid particles adjacent to the pipe wall in a solids-liquid pipeline.
Lazarus, Mark Doron
core   +1 more source

Self-Mixing Diode Laser Interferometry [PDF]

open access: yes, 2010
Self-mixing interferometry in a laser diode is a very powerful tool in measurement science. The Self-mixing interferometer is a very robust and low cost interferometer with extreme simplicity in alignment and setup.
Shrestha, Pawan Kumar
core  

Design and numerical simulation of the real-time particle charge and size analyser [PDF]

open access: yes, 2012
The electrostatic charge and size distribution of aerosol particles play a very important role in many industrial applications. Due to the complexity and the probabilistic nature of the different charging mechanisms often acting simultaneously, it is ...
Zhang, Lu
core  

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