Results 41 to 50 of about 48,553 (267)

Gravity Waves and Wind-Farm Efficiency in Neutral and Stable Conditions [PDF]

Boundary-Layer Meteorology, 2017
We use large-eddy simulations (LES) to investigate the impact of stable stratification on gravity-wave excitation and energy extraction in a large wind farm. To this end, the development of an equilibrium conventionally neutral boundary layer into a stable boundary layer over a period of 8 h is considered, using two different cooling rates.
Allaerts, Dries, Meyers, Johan
openaire   +3 more sources

Spatial mapping of the thermospheric neutral wind field [PDF]

Planetary and Space Science, 1984
There are many possible observing strategies available for mapping the thermospheric wind field by using observations of the Doppler shift of the O (1D) airglow with a Fabry-Perot interferometer. The determination of the neutral wind field from observed line-of-sight velocities invariably involves some assumptions about the nature of the wind field.
Tepley, C. A., Burnside, R. G., Meriwether, Jr. , J. W., Hays, Paul B. (Paul Byron), Cogger, L. L.   +4 more
openaire   +2 more sources

Generation of the lower-thermospheric vertical wind estimated with the EISCAT KST radar at high latitudes during periods of moderate geomagnetic disturbance [PDF]

Annales Geophysicae, 2008
Lower-thermospheric winds at high latitudes during moderately-disturbed geomagnetic conditions were studied using data obtained with the European Incoherent Scatter (EISCAT) Kiruna-Sodankylä-Tromsø (KST) ultrahigh frequency (UHF) radar system on 9 ...
S. Oyama, S. Oyama, B. J. Watkins, S. Maeda, H. Shinagawa, S. Nozawa, Y. Ogawa, A. Brekke, C. Lathuillere, W. Kofman   +9 more
doaj   +1 more source

Multi‐Instrument Observations of Ion‐Neutral Coupling in the Dayside Cusp

Geophysical Research Letters, 2020
Using data from the Scanning Doppler Imager, the Super Dual Auroral Radar Network, the EISCAT Svalbard Radar, and an auroral all‐sky imager, we examine an instance of F region neutral winds which have been influenced by the presence of poleward moving ...
D. D. Billett, K. Hosokawa, A. Grocott, J. A. Wild, A. L. Aruliah, Y. Ogawa, S. Taguchi, M. Lester   +7 more
doaj   +1 more source

The role of electric field and neutral wind in the generation of polar cap sporadic E [PDF]

Annales Geophysicae, 2008
This paper investigates the roles of electric field and neutral wind in the generation of sporadic-E layers within the polar cap. Two Es layers above Svalbard, observed by the EISCAT Svalbard Radar (ESR), were chosen for investigation.
T. Nygrén, M. Voiculescu, A. T. Aikio
doaj   +1 more source

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

FEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace, Alyssa Borges, Charles Arnaud, Tove Karlsson, Nina K. Bröker, Stefanie Barbirz, Marta Bally   +6 more
wiley   +1 more source

Geomagnetic Disturbances Due To Neutral‐Wind‐Driven Ionospheric Currents

Space Weather
Previous simulation efforts on geomagnetic disturbances (GMDs) and geomagnetically induced currents (GICs) mostly rely on global magnetohydrodynamics models, which explicitly calculate the magnetospheric currents and carry certain assumptions about the ...
Cheng Sheng, Yue Deng, Daniel T. Welling, Steven K. Morley   +3 more
doaj   +1 more source

Variations of the 630.0 nm airglow emission with meridional neutral wind and neutral temperature around midnight [PDF]

Annales Geophysicae, 2018
The ISUAL payload onboard the FORMOSAT-2 satellite has often observed airglow bright spots around midnight at equatorial latitudes. Such features had been suggested as the signature of the thermospheric midnight temperature maximum (MTM) effect, which
C.-Y. Chiang, S. W.-Y. Tam, T.-F. Chang, T.-F. Chang   +3 more
doaj   +1 more source

From mice to humans—divergent strategies for intestinal homeostasis and regeneration

FEBS Letters, EarlyView.
Recent advances such as organoid genome editing, xenotransplantation, imaging, and whole‐genome sequencing have enabled direct studies of human intestinal stem cells (ISCs). These studies reveal species‐specific features, including slower ISC proliferation, distinct injury responses, slower somatic mutation accumulation in humans, and an inverse ...
Keiko Ishikawa, Shinya Sugimoto, Toshiro Sato   +2 more
wiley   +1 more source

Efficient Usage of Dense GNSS Networks in Central Europe for the Visualization and Investigation of Ionospheric TEC Variations

Sensors, 2017
The technique of the orthogonal projection of ionosphere electronic content variations for mapping total electron content (TEC) allows us to visualize ionospheric irregularities.
Grzegorz Nykiel, Yevgen M. Zanimonskiy, Yuri M. Yampolski, Mariusz Figurski   +3 more
doaj   +1 more source