Results 81 to 90 of about 41,901 (252)

Strategies for Assessing Post‐Wildfire Geomorphic Resilience in Semiarid Rivers

River Research and Applications, EarlyView.
ABSTRACT We review and summarize diverse components of a catchment that can be monitored after wildfire to assess the geomorphic resilience of the river corridor in semiarid regions. We distinguish upland portions of river catchments from river corridors.
Ellen Wohl, Shayla Triantafillou, Alex Thornton‐Dunwoody, Connor Mertz, Katie Larkin, William Keenan, Steven Griffin, Dylan Davis, Lindsey Blehm   +8 more
wiley   +1 more source

Adaptive particle image velocimetry based on sharpness metrics

Journal of the European Optical Society-Rapid Publications, 2018
Background Optical distortions can significantly deteriorate the measurement accuracy in particle image velocimetry systems. Such distortions can occur at fluctuating phase boundaries during flow measurement and result from the accompanied refractive ...
M. Teich, J. Grottke, H. Radner, L. Büttner, J. W. Czarske   +4 more
doaj   +1 more source

Validation of a Particle Image Velocimetry Algorithm Through Comparative Field and Laboratory Analysis

River Research and Applications, EarlyView.
ABSTRACT Flow velocity measurement is fundamental to hydrological and hydraulic studies, providing essential data for streamflow estimation and river dynamics analysis. Traditional in situ methods like propeller gauges and acoustic Doppler current profilers are accurate but intrusive and labour‐intensive, while non‐intrusive image processing methods ...
Ghazaleh Nassaji Matin, Gareth Bradbury, Alan Puttock, Kirsty Frith, Diego Panici   +4 more
wiley   +1 more source

Combined Stereoscopic Particle Image Velocimetry and Line Integral Convolution Methods: Application to a Sphere Sedimenting Near a Wall in a Non-Newtonian Fluid. [PDF]

, 2005
The flow fields for a sphere sedimenting through a Newtonian and two non-Newtonian liquids near a wall in a square tank are investigated using 3-D stereoscopic particle image velocimetry (PIV) and line integral convolution (LIC) methods.
Finnis, Mark V., Tatum, J. A., Harrison, G. M., Lawson, Nicholas J.   +3 more
core  

Aligning Real‐Time Recurrence Computational Fluid Dynamics Simulations with Plant Data for the Ruhrstahl–Heraeus Degassing Process of Steel

steel research international, EarlyView.
Uncertainties exist in computational fluid dynamics (CFD) modeling of complex metallurgical processes, even when partly validated by laboratory experiments. rCFD enables computationally efficient prediction of long‐term RH degassing and can be adapted to vary flow conditions.
Xiaomeng Zhang, Maria Thumfart, Roman Rössler, Stefan Pirker   +3 more
wiley   +1 more source

Pulsed operation of high power light emitting diodes for flow velocimetry

, 2009
High powered light emitting diodes (LED) are investigated for possible uses as light sources in flow diagnostics, in particular, as an alternative to laser-based illumination in particle imaging flow velocimetry.
Willert, Christian, Mößner, Steffen, Klinner, Joachim   +2 more
core  

Three-phase Velocimetry of Material Response [PDF]

, 2008
Author Institution: Sandia National LaboratoriesSlides presented at the 3nd Annual Photonic Doppler Velocimetry (PDV) Conference and Workshop held at Sandia National Laboratories, Albuquerque, New Mexico, September 3-4 ...
Dolan, Daniel H., Jones, Scott C.
core  

Left and right myocardial performance indices in growth‐restricted fetuses: systematic review and meta‐analysis

Ultrasound in Obstetrics &Gynecology, EarlyView.
ABSTRACT Objectives To evaluate alterations in fetal cardiac function in pregnancies complicated by fetal growth restriction (FGR) by synthesizing evidence on myocardial performance index (MPI) and its constituent parameters for both the left and right ventricles.
A. Sirico, I. Mappa, G. M. Maruotti, L. Cobellis, G. Rizzo   +4 more
wiley   +1 more source

An experimental and computational analysis of buoyancy driven flows by laser sheet tomography, particle image velocimetry and computational fluid dynamics

, 1997
This paper contains details of a three pronged investigation into the development of a buoyant jet impinging on a wall in a closed vessel. The development of the flow was measured experimentally by particle image velocimetry (PIV) and laser sheet ...
Scanlon, TJ, Scanlon, T.J., Waddell, P, Waddell, Peter, Crawley, F., Stickland, MT, Stubbs, B, Stickland, M.T., Oldroyd, A, Crawley, F, Stubbs, B., Oldroyd, Andrew   +11 more
core  

The Performance of Selective Screening Ultrasound to Detect the Small‐for‐Gestational‐Age Foetus: A Prospective Cohort Study Nested Within the DESiGN Randomised Control Trial

BJOG: An International Journal of Obstetrics &Gynaecology, EarlyView.
ABSTRACT Objective Evidence on the performance of foetal growth ultrasound parameters to detect the Small‐for‐Gestational‐Age (SGA) foetus for a selective cohort is limited. We report the performance of estimated foetal weight under the 10th percentile (EFW < 10th) at the last selective screening ultrasound to detect SGA based on gestational age of ...
Charles Arcus, James Elhindi, Chivon Winsloe, Andrew Copas, Sophie Relph, Annette Briley, Kirstie Coxon, Mark Johnson, Asma Khalil, Deborah A. Lawlor, Christoph Lees, Neil Marlow, Louise Page, Andrew Shennan, Jane Sandall, Tanya Nippita, Matias C. Vieira, Dharmintra Pasupathy   +17 more
wiley   +1 more source