Results 31 to 40 of about 7,146,269 (348)
Quantitative blood flow velocity imaging using laser speckle flowmetry
Scientific Reports, 2016 Laser speckle flowmetry suffers from a debated quantification of the inverse relation between decorrelation time (τc) and blood flow velocity (V), i.e. 1/τc = αV.
A. Nadort +3 more
semanticscholar +1 more source
, 2018 We investigate the evolution of the horizontal flow field around sunspots during their decay by analysing its extension and horizontal velocity around eight spots using SDO/HMI Doppler maps.
González, Nazaret Bello +1 more
core +1 more source
A streamwise-constant model of turbulent pipe flow [PDF]
, 2011 A streamwise-constant model is presented to investigate the basic mechanisms responsible for the change in mean flow occuring during pipe flow transition.
Beverley J. McKeon +4 more
core +3 more sources
From Surface Flow Velocity Measurements to Discharge Assessment by the Entropy Theory
, 2017 A new methodology for estimating the discharge starting from the monitoring of surface flow velocity, usurf, is proposed. The approach, based on the entropy theory, involves the actual location of maximum flow velocity, umax, which may occur below the ...
T. Moramarco, S. Barbetta, A. Tarpanelli
semanticscholar +1 more source
NMR in Biomedicine, 2015 Thus far, blood flow velocity measurements with MRI have only been feasible in large cerebral blood vessels. High‐field‐strength MRI may now permit velocity measurements in much smaller arteries.
W. Bouvy +6 more
semanticscholar +1 more source
Mesoscopic seepage velocity characteristics during heap leaching based on magnetic resonance imaging
工程科学学报, 2015 Column leaching seepage processes were detected in a non-contact and non-destructive way by magnetic resonance imaging. Column leaching images were obtained when the flow was stationary and running.
YIN Sheng-hua +4 more
doaj +1 more source
Refinement of turbulent flow velocity characteristics [PDF]
Инженерно-строительный журнал, 2013 The basic laws of Prandtl semi-empirical turbulence theory were analyzed in the article. It was shown, that the Prandtl – Nikuradse logarithmic distribution of velocities are not strictly universal. The change of the first and second turbulence constants
Y.V. Bryanskaya
doaj +1 more source
Non-invasive assessment for intratumoural distribution of interstitial fluid flow
Magnetic Resonance Letters, 2023 Interstitial fluid plays a vital role in drug delivery and tumour treatment. However, few non-invasive measurement methods are available for measuring low-velocity biological fluid flow.
Jun Zhao +3 more
doaj +1 more source
Scalar transport in compressible flow
, 1996 Transport of scalar fields in compressible flow is investigated. The effective equations governing the transport at scales large compared to those of the advecting flow are derived by using multi-scale techniques.
Aschcroft +36 more
core +1 more source
Oil-water two-phase flow velocity measurement with Continuous wave ultrasonic Doppler
Journal of Physics: Conference Series, 2015 Oil-water two-phase flow exists widely in many industries. Accurate measurement of flow velocity is of significance for quantify the volume or mass flow rate as well as monitor the operation safety.
Weiling Liu, C. Tan, F. Dong
semanticscholar +1 more source