Results 71 to 80 of about 29,383 (219)

Study of the turbulent mixing zone induced by the Richtmyer-Meshkov instability using Laser Doppler Velocimetry and Schlieren visualizations [PDF]

, 2012
An experimental study of the compressible mixing generated by the Richtmyer-Meshkov instability (RMI) is carried out in a vertical shock tube by means of two-components Laser Doppler Velocimetry (2C-LDV) measurements and Time-resolved Schlieren ...
Bouzgarrou, Ghazi, Bury, Yannick, Haas, Jean-François, Jamme, Stéphane, Joly, Laurent   +4 more
core  

Refinement of a Framework for Moving Aircraft River Velocimetry (MARV) and Application to Particle Tracking Along Alaskan Rivers

Water Resources Research, Volume 62, Issue 5, May 2026.
Abstract Information on river velocities enhances understanding flood hazards, evaluating habitat conditions, and predicting the transport of floating materials. In this follow‐up study, we used data from two new sites, one with a more complex morphology and the other with a lower suspended sediment concentration, to provide further evidence that ...
Carl J. Legleiter, Paul J. Kinzel, Mark Laker, Jeffrey S. Conaway   +3 more
wiley   +1 more source

Gas-solid two-phase turbulent flow in a circulating fluidized bed riser: an\ud experimental and numerical study [PDF]

, 2006
Hydrodynamics of gas-particle two-phase turbulent flow in a circulating fluidized bed riser is studied experimentally by Particle Image Velocimetry (PIV) and numerically with the use of a 3D discrete hard sphere particle model (DPM).
Deen, N.G., He, Y., Kuipers, J.A.M., Sint Annaland, M. van   +3 more
core   +2 more sources

High-frequency ultrasonic speckle velocimetry in sheared complex fluids

, 2003
High-frequency ultrasonic pulses at 36 MHz are used to measure velocity profiles in a complex fluid sheared in the Couette geometry. Our technique is based on time-domain cross-correlation of ultrasonic speckle signals backscattered by the moving medium.
A. Colin, Ackerson, Bandyopadhyay, Barnes, Berson, Bohs, Bonnefous, Brito, Britton, Cappelaere, Christopher, Diat, Echevarría, Ferrara, Ferrara, Foster, Goddard, Groisman, Hanlon, Hein, Kaisar Al, L. Bécu, Larson, Mair, Manneville, Mordant, Mueth, Olmsted, Ouriev, Ozaki, Peschard, Porte, Roux, S. Manneville, Salmon, Salmon, Salmon, Salmon, Schmitt, Sierro, Spenley, Sugiura, Takeda, Takeda, Turnbull, Wheeler, Wunenburger, Zuikova   +47 more
core   +3 more sources

A new methodology for the quantitative visualization of coherent flow structures in alluvial channels using multibeam echo-sounding (MBES) [PDF]

, 2010
In order to investigate the interactions between turbulence and suspended sediment transport in natural aqueous environments, we ideally require a technique that allows simultaneous measurement of fluid velocity and sediment concentration for the whole ...
Best, J L, Best, Jim, Czuba, Jonathan, Malzone, Chris, Oberg, Kevin, Parsons, Daniel, Simmons, Stephen, Simmons, Steve   +7 more
core   +3 more sources

Reversible Neurological Manifestations Preceding Biochemical Deterioration in Postpartum HELLP Syndrome—A Case Report and Literature Review

The Journal of Clinical Hypertension, Volume 28, Issue 5, May 2026.
ABSTRACT Posterior reversible encephalopathy syndrome (PRES) is a rare but severe neurological complication associated with hypertensive disorders of pregnancy and HELLP syndrome. We report a postpartum case in which neurological manifestations preceded the full biochemical expression of HELLP syndrome. A 22‐year‐old primigravida was admitted at 36 + 0
Dario Colacurci, Stefano Raffaele Giannubilo, Laura Sarno, Caterina Fulgione, Laura Letizia Mazzarelli, Angelo Sirico, Maria Liberata Meccariello, Andrea Albanese, Dayana Quintili, Irene Lubinski, Mario Ascione, Carla Riccardi, Giorgia D'Apice, Mariarosaria Motta, Sara Iannantuoni, Chiara Murolo, Giuseppe Bifulco, Costantino Di Carlo, Andrea Ciavattini, Giuseppe Maria Maruotti   +19 more
wiley   +1 more source

Measuring River Surface Velocity Using UAS‐Borne Doppler Radar

Water Resources Research
Using Unoccupied Aerial Systems (UAS) equipped with optical RGB cameras and Doppler radar, surface velocity can be efficiently measured at high spatial resolution.
Zhen Zhou, Laura Riis‐Klinkvort, Emilie Ahrnkiel Jørgensen, Christine Lindenhoff, Monica Coppo Frías, Alexander Rietz Vesterhauge, Daniel Haugård Olesen, Makar Lavish, Alexey Dobrovolskiy, Alexey Kadek, Niksa Orlic, Tomislav Grubesa, Luka Drmić, Henrik Grosen, Sune Nielsen, Daniel Wennerberg, Viktor Fagerström, Jenny Axén, David Gustafsson, Peter Bauer‐Gottwein   +19 more
doaj   +1 more source

Reduced placental volume and flow in severe growth restricted fetuses

Clinics
OBJECTIVES: To evaluate placental volume and vascular indices in pregnancies with severe fetal growth restriction and determine their correlations to normal reference ranges and Doppler velocimetry results of uterine and umbilical arteries.
Renata Montes Dourado Abulé, Lisandra Stein Bernardes, Giovana Farina Doro, Seizo Miyadahira, Rossana Pulcinelli Vieira Francisco   +4 more
doaj   +1 more source

Study of abnormal umbilical artery doppler and neonatal outcome

Asian Journal of Medical Sciences, 2019
Background: Doppler provides assessment of uteroplacental and fetoplacental circulation during pregnancy. It is a sensitive tool in early detection of fetal compromise and allows needful intervention. Aims and Objective: To study the role of umbilical
Gyawali Merina , Poudel Ramesh
doaj   +1 more source

Uterine Artery Doppler Velocimetry of Uterine Leiomyomas in Nigerian Women [PDF]

Revista Brasileira de Ginecologia e Obstetrícia, 2017
Objective To describe the blood flow velocities and impedance indices changes in the uterine arteries of leiomyomatous uteri using Doppler sonography.
Bukunmi Michael Idowu, Bolanle Olubunmi Ibitoye, Victor Adebayo Adetiloye   +2 more
doaj   +1 more source