Results 91 to 100 of about 174,040 (347)

A Hydrodynamic Bioreactor for High‐Yield Production of Extracellular Vesicles from Stem Cell Spheroids with Defined Cargo Profiling

open access: yesAdvanced Science, EarlyView.
This study harnesses hydrodynamic flows to generate, confine and stimulate stem cell spheroids, enabling the large‐scale production of extracellular vesicles (EVs). This innovative method not only streamlines spheroid formation and subsequent EV release in a single, integrated process, but also ensures the generation of EVs with enhanced biological ...
Solène Lenoir   +7 more
wiley   +1 more source

Turbulent Hydrofoil Cavitation Simulations: Applications of RANS with Eddy Viscosity and Interfacial Turbulence Damping and LES

open access: yesJournal of Marine Science and Engineering
The performance of various turbulence modelling methods for simulating cavitating flow over a hydrofoil was investigated. VOF mixture modelling was applied for the multiphase flow, along with a standard two-equation turbulence model, a hybrid RANS-LES ...
Ville Viitanen   +4 more
doaj   +1 more source

Quantifying Additive Manufacturing Vapor Plumes Using Laser‐Induced Breakdown Spectroscopy, Synchrotron X‐Ray Radiography and Simulations

open access: yesAdvanced Science, EarlyView.
This study presents a novel in situ laser‐induced breakdown spectroscopy system for monitoring metal vapors produced by the intense laser‐metal interactions in laser powder bed fusion additive manufacturing and laser welding. The insights from this new technique reveal changes in alloy compositions and provide the first in situ validation of multi ...
Anna C. M. Getley   +8 more
wiley   +1 more source

Physical and mathematical modelling of ladle metallurgy operations [PDF]

open access: yes
Experimental measurements are reported, on the velocity fields and turbulence parameters on a water model of an argon stirred ladle. These velocity measurements are complemented by direct heat transfer measurements, obtained by studying the rate at which
El-Kaddah, N., Szekely, J.
core   +1 more source

Linear-model-based estimation in wall turbulence: improved stochastic forcing and eddy viscosity terms [PDF]

open access: hybrid, 2021
Vikrant Gupta   +4 more
openalex   +1 more source

Miniature Robotic Swimmer with Precise 2D Motion Control via Acoustic Vortex‐Induced Propulsion

open access: yesAdvanced Science, EarlyView.
In this work, a miniature robotic swimmer achieves precise 2D motion using sound waves with customized 3D‐printed lenses. Localized acoustic vortices drive both translation and rotation of the swimmer without mechanical parts. This contactless approach offers a novel route to controlled micro‐scale movement, with promising applications in biomedical ...
Chadi Ellouzi   +6 more
wiley   +1 more source

Synthetic turbulence modelling for offshore wind farm engineering models using coherence aggregation

open access: yesWind Energy
Turbulent wind fields are known to be a major driver for structural loads and power fluctuations on offshore wind turbines. At the single‐turbine scale, there exist well‐established design standards based on wind spectra and coherence functions ...
Valentin Chabaud
doaj   +1 more source

The case of the trapped singularities [PDF]

open access: yes, 2004
A case study in bifurcation and stability analysis is presented, in which reduced dynamical system modelling yields substantial new global and predictive information about the behaviour of a complex system.
Ball, R.
core  

Continuous daytime and nighttime forecast of atmospheric optical turbulence from numerical weather prediction models

open access: gold, 2023
Florian Quatresooz   +6 more
openalex   +1 more source

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