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Enhanced Chaotic Manta Ray Foraging Algorithm for Function Optimization and Optimal Wind Farm Layout Problem

open access: yesIEEE Access, 2022
Manta ray foraging optimization (MRFO) algorithm is relatively a novel bio-inspired optimization technique directed to given real-world engineering problems.
Fatima Daqaq   +4 more
doaj   +1 more source

Study on Complex Wake Characteristics of Yawed Wind Turbine Using Actuator Line Method

open access: yesJournal of Marine Science and Engineering, 2023
In modern large-scale wind farms, power loss caused by the wake effect is more than 30%, and active yaw control can greatly reduce the influence of the wake effect by deflecting the wind turbine’s wake.
Tengyuan Wang   +8 more
doaj   +1 more source

Effects of Sleep and Wake on Oligodendrocytes and Their Precursors [PDF]

open access: yesThe Journal of Neuroscience, 2013
Previous studies of differential gene expression in sleep and wake pooled transcripts from all brain cells and showed that several genes expressed at higher levels during sleep are involved in the synthesis/maintenance of membranes in general and of myelin in particular, a surprising finding given the reported slow turnover of many myelin components ...
BELLESI, MICHELE   +5 more
openaire   +4 more sources

Wind Farm Power Prediction Considering Layout and Wake Effect: Case Study of Saudi Arabia

open access: yesEnergies, 2023
The world’s technological and economic advancements have led to a sharp increase in the demand for electrical energy. Saudi Arabia is experiencing rapid economic and demographic growth, which is resulting in higher energy needs. The limits of fossil fuel
Khadijah Barashid   +2 more
doaj   +1 more source

Modelling the Wake Flow Behind a Model of Horizontal Axis Wind Turbine using RANS Approach: A Comparative Study [PDF]

open access: yesJournal of Engineering Research - Egypt, 2020
Steady CFD simulations, which is based on Reynolds Average Navier-Stokes (RANS) approach, were conducted for a model of Horizontal Axis Wind Turbine (HAWT) and compared with experimental data in order to assess the accuracy of these models in simulating ...
Abd Elnaby Kabeel   +3 more
doaj   +1 more source

Reflected Protons in the Lunar Wake and Their Effects on Wake Potentials

open access: yesJournal of Geophysical Research: Space Physics, 2020
AbstractThe refilling of the lunar wake is facilitated by the wake ambipolar electric potential arising from the electron pressure gradient. Incident solar wind protons can be reflected by the lunar crustal magnetic fields and the lunar surface on the dayside and repicked up, entering the lunar wake due to their large gyroradii.
Shaosui Xu   +3 more
openaire   +5 more sources

Effects of sleep and waking on the synaptic ultrastructure [PDF]

open access: yesPhilosophical Transactions of the Royal Society B: Biological Sciences, 2020
We summarize here several studies performed in our laboratory, mainly using serial block-face scanning electron microscopy (SBEM), to assess how sleep, spontaneous waking and short sleep deprivation affect the size and number of synapses in the cerebral cortex and hippocampus. With SBEM, we reconstructed thousands of cortical and hippocampal excitatory,
Chiara Cirelli, Giulio Tononi
openaire   +2 more sources

The Effects of Sleep Quality on Dream and Waking Emotions [PDF]

open access: yesInternational Journal of Environmental Research and Public Health, 2021
Despite the increasing interest in sleep and dream-related processes of emotion regulation, their reflection into waking and dream emotional experience remains unclear. We have previously described a discontinuity between wakefulness and dreaming, with a prevalence of positive emotions in wakefulness and negative emotions during sleep.
Francesca Conte   +6 more
openaire   +3 more sources

Performance Enhancement of Proposed Namaacha Wind Farm by Minimising Losses Due to the Wake Effect: A Mozambican Case Study

open access: yesEnergies, 2021
District of Namaacha in Maputo Province of Mozambique presents a high wind potential, with an average wind speed of around 7.5 m/s and huge open fields that are favourable to the installation of wind farms.
Paxis Marques João Roque   +2 more
doaj   +1 more source

Impact Analysis of Large-Scale Wind Farms Integration in Weak Transmission Grid from Technical Perspectives

open access: yesEnergies, 2020
The integration of commercial onshore large-scale wind farms into a national grid comes with several technical issues that predominately ensure power quality in accordance with respective grid codes.
Shah Rukh Abbas   +7 more
doaj   +1 more source

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