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Design of a Fluidic Actuator with Independent Frequency and Amplitude Modulation for Control of Swirl Flame Dynamics

open access: yesFluids, 2021
Fluidic actuators are designed to control the oscillatory helical mode, called a precessing vortex core (PVC), which is often observed in gas turbine combustors.
Amrit Adhikari   +3 more
doaj   +1 more source

Morphogenesis of the gastrovascular canal network in Aurelia jellyfish: Variability and possible mechanisms

open access: yesFrontiers in Physics, 2023
Patterns in biology can be considered as predetermined or arising from a self-organizing instability. Variability in the pattern can, thus, be interpreted as a trace of instability, growing out from noise. Studying this variability can, thus, hint toward
Solène Song   +7 more
doaj   +1 more source

Time-resolved microfluidics unravels individual cellular fates during double-strand break repair

open access: yesBMC Biology, 2022
Background Double-strand break repair (DSBR) is a highly regulated process involving dozens of proteins acting in a defined order to repair a DNA lesion that is fatal for any living cell. Model organisms such as Saccharomyces cerevisiae have been used to
Nadia Vertti-Quintero   +5 more
doaj   +1 more source

Driving and Dissipation of Solar-Wind Turbulence: What is the Evidence?

open access: yesFrontiers in Astronomy and Space Sciences, 2021
Fifty years of solar wind observations have provided extensive data that drives an evolving view of the fundamental nature and dynamics of the magnetic, velocity, and density fluctuations that are ubiquitous throughout the heliosphere.
Charles W. Smith, Bernard J. Vasquez
doaj   +1 more source

On the Mechanisms of a Snowstorm Associated with a Low-Level Cold Front and Low-Level Jet in the Western Mountainous Region of the Junggar Basin, Xinjiang, Northwest China

open access: yesAtmosphere, 2023
Snowstorms frequently hit large parts of the Northern Hemisphere, and their causative factors have been drawing increasing attention in recent years.
Xiaoning He   +11 more
doaj   +1 more source

Instabilities and turbulence in stellarators from the perspective of global codes

open access: yesNuclear Fusion, 2023
In this work, a comparison of the global gyrokinetic codes EUTERPE and GENE-3D in stellarator configurations of the Large Helical Device (LHD) and the Wendelstein 7-X (W7-X) is carried out.
E. Sánchez   +5 more
doaj   +1 more source

On the VHE Spectrum and Formation of the Teraelectronvolt Pulsed Emission of the Crab Pulsar

open access: yesGalaxies, 2022
In the present paper, a model for the pulsed γ-ray emission of the Crab pulsar from 0.01 GeV to 1 TeV in the context of synchrotron emission generated in the vicinity of a light cylinder is developed.
Nino Chkheidze
doaj   +1 more source

Heterogeneous Diffusion and Nonlinear Advection in a One-Dimensional Fisher-KPP Problem

open access: yesEntropy, 2022
The goal of this study is to provide an analysis of a Fisher-KPP non-linear reaction problem with a higher-order diffusion and a non-linear advection. We study the existence and uniqueness of solutions together with asymptotic solutions and positivity ...
José Luis Díaz Palencia   +2 more
doaj   +1 more source

ENSO Modulates Mean Currents and Mesoscale Eddies in the Caribbean Sea

open access: yesGeophysical Research Letters, 2023
Although El Niño‐Southern Oscillation (ENSO) and its global impacts through teleconnection have been known for decades, if and how the mean currents and mesoscale eddies in the Caribbean Sea are linked to ENSO remains an open question. Here, by analyzing
Minghai Huang   +3 more
doaj   +1 more source

The Hydrodynamics of a Micro-Rocket Propelled by a Deformable Bubble

open access: yesFluids, 2019
We perform simulations to study the hydrodynamics of a conical-shaped swimming micro-robot that ejects catalytically produced bubbles from its inside. We underline the nontrivial dependency of the swimming velocity on the bubble deformability and on the ...
Giacomo Gallino   +2 more
doaj   +1 more source

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