Results 11 to 20 of about 7,809,143 (340)

Moyamoya Disease and Flow Velocity

open access: yesJMA Journal, 2023
Moyamoya disease (MMD) and moyamoya syndrome (MMS) remain a great challenge for both scientists and clinicians. Although the identification of RNF213, the susceptibility gene for the onset of MMD, was a breakthrough, the exact mechanisms of the ...
T. Tominaga
openaire   +3 more sources

Hidden fluid mechanics: Learning velocity and pressure fields from flow visualizations

open access: yesScience, 2020
Machine-learning fluid flow Quantifying fluid flow is relevant to disciplines ranging from geophysics to medicine. Flow can be experimentally visualized using, for example, smoke or contrast agents, but extracting velocity and pressure fields from this ...
M. Raissi, A. Yazdani, G. Karniadakis
semanticscholar   +1 more source

Refinement of turbulent flow velocity characteristics [PDF]

open access: yesИнженерно-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

Seasonal variation in the Chironomidae (Diptera) communities of two Faroese streams

open access: yesCHIRONOMUS Journal of Chironomidae Research, 2023
Seasonal variation of freshwater invertebrate communities is strongly influenced by abiotic factors including temperature and precipitation which, in turn, are predicted to be affected by climate change. It is important to study these effects, not least
Leivur Janus Hansen   +2 more
doaj   +1 more source

Cavitation–Silt Erosion Behavior and Failure Mechanism of an HVOF-Sprayed WC-Cr3C2-Ni Coating for Offshore Hydraulic Machinery

open access: yesJournal of Marine Science and Engineering, 2022
WC-Cr3C2-Ni coatings are a vital class of hard ceramic/cermet coatings with potential applications as wear-resistant materials. However, their erosion wear behavior in 3.5 wt.% sodium chloride medium (SCM) remains largely unexplored.
Jinran Lin   +6 more
doaj   +1 more source

Effects of Flow Velocity on the Growth and Survival of Haliotis discus hannai Larvae in the Recirculating Upflow System From the Point of Energy Metabolism

open access: yesFrontiers in Marine Science, 2021
For the abalone Haliotis discus hannai, attachment and metamorphosis are crucial stages in the transition from planktonic to benthic life. Increasing the larval metamorphosis rate by artificially controlling the external environment and simulating ...
Mo Zhang   +21 more
doaj   +1 more source

Flow velocities of Alaskan glaciers [PDF]

open access: yesNature Communications, 2013
Our poor understanding of tidewater glacier dynamics remains the primary source of uncertainty in sea level rise projections. On the ice sheets, mass lost from tidewater calving exceeds the amount lost from surface melting. In Alaska, the magnitude of calving mass loss remains unconstrained, yet immense calving losses have been observed.
Evan W, Burgess   +2 more
openaire   +2 more sources

Determining Tipping Points and Responses of Macroinvertebrate Traits to Abiotic Factors in Support of River Management

open access: yesBiology, 2023
Although the trait concept is increasingly used in research, quantitative relations that can support in determining ecological tipping points and serve as a basis for environmental standards are lacking.
Marie Anne Eurie Forio   +6 more
doaj   +1 more source

Modeling Bed Shear Stress Distribution in Rectangular Channels Using the Entropic Parameter

open access: yesEntropy, 2020
The evaluation of bed shear stress distribution is fundamental to predicting the transport of sediments and pollutants in rivers and to designing successful stable open channels. Such distribution cannot be determined easily as it depends on the velocity
Domenica Mirauda, Maria Grazia Russo
doaj   +1 more source

River Sediment Transport Modeling of Ele River using Computational Fluid Dynamics Model of COMSOL Multiphysics Program

open access: yesASM Science Journal, 2021
Excessive sediment deposition results to hydro-ecological problems particularly for shallow streams that experience significant point-source pollution. In recent times, models have been employed to investigate sediment transport in river systems. The aim
Joseph Ikenna Ubah   +3 more
doaj   +1 more source

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