Results 71 to 80 of about 8,461,833 (392)

Comparison of OpenFOAM and EllipSys3D for neutral atmospheric flow over complex terrain [PDF]

open access: yesWind Energy Science, 2016
The flow solvers OpenFOAM and EllipSys3D are compared in the case of neutral atmospheric flow over terrain using the test cases of Askervein and Bolund hills.
D. Cavar   +7 more
doaj   +1 more source

Time after time – circadian clocks through the lens of oscillator theory

open access: yesFEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo   +2 more
wiley   +1 more source

Wind Farm Wakes from SAR and Doppler Radar

open access: yesRemote Sensing, 2020
We retrieve atmospheric wake characteristics at the wind farm Westermost Rough from Sentinel-1 Synthetic Aperture Radar (SAR) images. For the first time, co-located reference measurements of the full flow field around the wind farm are available from ...
Tobias Ahsbahs   +3 more
doaj   +1 more source

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

open access: yesFEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka   +11 more
wiley   +1 more source

Wind Energy: Harnessing the Wind to Generate Electricity [PDF]

open access: yes, 2006
Key facts: - The spinning blades of wind turbines convert energy from the wind's motion into electricity. - Installed US wind power plants had 6,740 megawatts (MW) of electrical capacity in 2004, enough to serve 1.6 million households. - The cost of wind

core  

Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions

open access: yesFEBS Letters, EarlyView.
We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva   +10 more
wiley   +1 more source

Power curve and wake analyses of the Vestas multi-rotor demonstrator [PDF]

open access: yesWind Energy Science, 2019
Numerical simulations of the Vestas multi-rotor demonstrator (4R-V29) are compared with field measurements of power performance and remote sensing measurements of the wake deficit from a short-range WindScanner lidar system.
M. P. van der Laan   +11 more
doaj   +1 more source

The small wind turbine field lab extensive field tests for small wind turbines [PDF]

open access: yes, 2013
This paper describes the research possibilities at the Small Wind Turbine Field Lab and the involved research groups of Ghent University, covering different aspects of a small wind energy system. In contrast to large and medium-sized wind turbines, small
Botteldooren, Dick   +9 more
core  

Global estimations of wind energy potential considering seasonal air density changes [PDF]

open access: yes, 2019
The literature typically considers constant annual average air density when computing the wind energy potential of a given location. In this work, the recent reanalysis ERA5 is used to obtain global seasonal estimates of wind energy production that ...
Carreno-Madinabeitia, Sheila   +4 more
core   +5 more sources

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