Results 31 to 40 of about 2,979,616 (246)

Analysis of Vertical Wind Shear Effects on Offshore Wind Energy Prediction Accuracy Applying Rotor Equivalent Wind Speed and the Relationship with Atmospheric Stability

Applied Sciences, 2022
If the wind speed that passed through a wind turbine rotor disk area is constant, the hub height wind speed (HHWS) could be representative of the wind speed over the rotor disk area.
Geon Hwa Ryu, Dongjin Kim, Dae-Young Kim, Young-Gon Kim, Sung Jo Kwak, Man Soo Choi, Wonbae Jeon, Bum-Suk Kim, Chae-Joo Moon   +8 more
doaj   +1 more source

A Nonlinear Wind Turbine Wake Expansion Model Considering Atmospheric Stability and Ground Effects

Energies
This study investigates the influence of atmospheric stability and ground effects on wind turbine wake recovery, challenging the conventional linear relationship between turbulence intensity and wake expansion coefficient.
Xingxing Han, Tongguang Wang, Xiandong Ma, Chang Xu, Shifeng Fu, Jinmeng Zhang, Feifei Xue, Zhe Cheng   +7 more
doaj   +1 more source

The Impact of Biomass Heat Storage on the Canopy Energy Balance and Atmospheric Stability in the Community Land Model

Journal of Advances in Modeling Earth Systems, 2019
Atmospheric models used for weather prediction and future climate projections rely on land models to calculate surface boundary conditions. Observations of near‐surface states and fluxes made at flux measurement sites provide valuable data with which to ...
Sean C. Swenson, Sean P. Burns, David M. Lawrence   +2 more
doaj   +1 more source

Reconstructing enzyme evolution by protein engineering

FEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler, Markus R. Busch, Reinhard Sterner   +2 more
wiley   +1 more source

Effect of Atmospheric Stability on Meandering and Wake Characteristics in Wind Turbine Fluid Dynamics

Applied Sciences
This study investigates the impact of atmospheric stability on wind turbine flow dynamics, focusing on wake deflection and meandering. Using the high-fidelity large-eddy simulation coupled with the Actuator Line model, we explore three stability ...
Bendik Peter Løvøy Alvestad, Leon Fevang-Gunn, Balram Panjwani, Tania Kalogiannidis Bracchi   +3 more
doaj   +1 more source

Radon as a tracer of atmospheric influences on traffic-related air pollution in a small inland city

Tellus: Series B, Chemical and Physical Meteorology, 2016
One year of radon, benzene and carbon monoxide (CO) concentrations were analysed to characterise the combined influences of variations in traffic density and meteorological conditions on urban air quality in Bern, Switzerland.
Alastair G. Williams, Scott D. Chambers, Franz Conen, Stefan Reimann, Matthias Hill, Alan D. Griffiths, Jagoda Crawford   +6 more
doaj   +1 more source

Chiral separation of chloroalkanes with the chromatographic column onboard Martian rovers

FEBS Letters, EarlyView.
Computer image of the Rosalind Franklin Rover of ESA's ExoMars mission. ExoMars is scheduled to land on planet Mars in Oxia Planum in 2029. This area represents an interesting spot to look for biosignatures. Investigations of ExoMars include measurement on molecular chirality. We show that chiral chloroalkanes, that have been identified on Mars, can be
Asma Merzougui, Agnes Banreti, Armelle L. Ernst, Guillaume Leseigneur, Uwe J. Meierhenrich   +4 more
wiley   +1 more source

Wind Characteristics in the Surface Layer on Different Underlying Surfaces in High Altitude Areas of Central and Western China

Atmosphere, 2022
To explore the influence of complex terrain on wind characteristics of the surface layer and to better develop and utilize wind energy resources of high-altitude regions in central and western China, two typical topographies: the Qiaodi Village in ...
Dan Zheng, Zhangsong Ni, Yiyu Qing, Zhuang Sun, Jun Zhang, Shumin Li   +5 more
doaj   +1 more source

Four-dimensional variational data assimilation for inverse modelling of atmospheric methane emissions: method and comparison with synthesis inversion [PDF]

, 2008
A four-dimensional variational (4D-Var) data assimilation system for inverse modelling of atmospheric methane emissions is presented. The system is based on the TM5 atmospheric transport model.
Bergamaschi, P., M. C. Krol, P. Bergamaschi, J. F. Meirink, Krol, M.C., Dep Natuurkunde, Meirink, J., Marine and Atmospheric Research, Meirink, J.F., Krol, M. C., Meirink, J. F.   +10 more
core   +3 more sources

A context‐dependent modulatory role for eIF6 in acquired resistance to vemurafenib in melanoma

FEBS Letters, EarlyView.
Acquired resistance to vemurafenib upregulates the translation factor eIF6 in melanoma cells. Silencing eIF6 in resistant cells reduces proliferation and partially restores drug sensitivity, whereas its overexpression increases sensitivity across melanoma lines regardless of BRAF status, via modulation of mTOR, S6K, and MAPK signaling.
George Kyriakopoulos, Antonia Petropoulou, Alexandra Anastogianni, Angelina Bania, Vassilis Stamatakis, Argyris Alexiou, Chi‐Ping Day, Glenn Merlino, Katerina Grafanaki, Constantinos Stathopoulos   +9 more
wiley   +1 more source