Results 31 to 40 of about 58,603 (268)

Techno-economic analysis of nuclear-powered urea production with commercial greenhouse

open access: yesNext Sustainability
This study investigates the potential of integrating Small Modular Reactors (SMRs) into greenhouse operations and urea production to tackle rising energy demands and environmental concerns stemming from emissions in the food production sector.
Anup Jwala Poudel   +2 more
doaj   +1 more source

Investigating the Linear Dynamics of the Near-Field of a Turbulent High-Speed Jet Using Dual-Particle Image Velocimetry (PIV) and Dynamic Mode Decomposition (DMD)

open access: yesFluids, 2023
The quest for the physical mechanisms underlying turbulent high-speed jet flows is underpinned by the extraction of spatio-temporal coherent structures from their flow fields.
Vishal Chaugule   +4 more
doaj   +1 more source

Turbulence and fossil turbulence in oceans and lakes

open access: yesChinese Journal of Oceanology and Limnology, 2004
Turbulence is defined as an eddy-like state of fluid motion where the inertial-vortex forces of the eddies are larger than any of the other forces that tend to damp the eddies out. Energy cascades of irrotational flows from large scales to small are non-turbulent, even if they supply energy to turbulence. Turbulent flows are rotational and cascade from
Leung, Pak Tao, Gibson, Carl H.
openaire   +2 more sources

Turbulent thermalization [PDF]

open access: yesPhysical Review D, 2004
We study, analytically and with lattice simulations, the decay of coherent field oscillations and the subsequent thermalization of the resulting stochastic classical wave-field. The problem of reheating of the Universe after inflation constitutes our prime motivation and application of the results. We identify three different stages of these processes.
Micha, Raphael, Tkachev, Igor I.
openaire   +2 more sources

Deep learning fluid flow reconstruction around arbitrary two-dimensional objects from sparse sensors using conformal mappings

open access: yesAIP Advances, 2022
The usage of neural networks (NNs) for flow reconstruction (FR) tasks from a limited number of sensors is attracting strong research interest owing to NNs’ ability to replicate high-dimensional relationships.
Ali Girayhan Özbay, Sylvain Laizet
doaj   +1 more source

Chemical turbulence equivalent to Nikolavskii turbulence [PDF]

open access: yesPhysical Review E, 2004
We find evidence that a certain class of reaction-diffusion systems can exhibit chemical turbulence equivalent to Nikolaevskii turbulence. The distinctive characteristic of this type of turbulence is that it results from the interaction of weakly stable long-wavelength modes and unstable short-wavelength modes.
openaire   +3 more sources

POD Analysis of the Wake of Two Tandem Square Cylinders

open access: yesFluids
This study aims to investigate the wake of two tandem square cylinders based on the Proper Orthogonal Decomposition (POD) analyses of the PIV and hotwire data. The cylinder centre-to-centre spacing ratio L/w examined is from 1.2 to 4.2, covering the four
Jingcheng Hao   +4 more
doaj   +1 more source

Archimedes’ law explains penetration of solids into granular media

open access: yesNature Communications, 2018
The penetration dynamics of solid objects into granular media has been described by theories that are constrained to the use of phenomenological models or empirical parameters. Here, Kang et al.
Wenting Kang   +3 more
doaj   +1 more source

A computational framework for physics-informed symbolic regression with straightforward integration of domain knowledge

open access: yesScientific Reports, 2023
Discovering a meaningful symbolic expression that explains experimental data is a fundamental challenge in many scientific fields. We present a novel, open-source computational framework called Scientist-Machine Equation Detector (SciMED), which ...
Liron Simon Keren   +2 more
doaj   +1 more source

High Health Care Utilization Preceding Diagnosis With Juvenile Idiopathic Arthritis

open access: yesArthritis Care &Research, EarlyView.
Objective Although early diagnosis improves long‐term outcomes, patients with juvenile idiopathic arthritis (JIA) often experience prolonged, circuitous paths to diagnosis. To inform diagnostic improvement, we sought to characterize health care utilization in the year preceding diagnosis. Methods We identified 10,021 patients with an incident diagnosis
Anna Costello   +5 more
wiley   +1 more source

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