Results 111 to 120 of about 1,397,636 (301)

Photoactivation‐Enabled Tunable Room‐Temperature Phosphorescence and Thermally Activated Delayed Fluorescence in Crystalline Materials

open access: yesAdvanced Science, EarlyView.
This work is the first to demonstrate the regulation of photoactivated room‐temperature phosphorescence (RTP) and thermally activated delayed fluorescence (TADF) in crystalline materials without any pretreatment. Furthermore, we reveal the underlying mechanisms by uncovering the role of host‐guest energy level alignment, exciton lifetime, crystallinity,
Lisha Zhang   +5 more
wiley   +1 more source

Asymmetric Fluorinated Spiro Hole‐Transport Materials Enabled by a Rapid Core‐Forming Strategy for Blade‐Coated Perovskite Solar Cells

open access: yesAdvanced Science, EarlyView.
Facile synthesis of asymmetric fluorinated spiro‐type HTMs combined with blade‐coating fabrication and vacuum‐assisted crystallization enables high‐efficiency PSCs with PCEs of 24.49% (0.09 cm2) and 23.28% (1.00 cm2), along with excellent stability.
Kun‐Mu Lee   +13 more
wiley   +1 more source

Detection of Wake Impingement in Support of Wind Plant Control

open access: yes, 2015
This paper describes a methodology to detect on a wind turbine wake impingement by an upstream machine. The detection is based on the use of rotor loads.
Bottasso, Carlo L.   +2 more
core  

Effects of Wind and Isopycnal Mixing on Southern Ocean Surface Buoyancy Flux and Antarctic Bottom Water Formation

open access: yesGeophysical Research Letters
In coarse resolution ocean models, eddy diffusive effects are parameterized using an isopycnal mixing coefficient, which controls mixing strength along isopycnals.
Nicole K. Neumann, C Spencer Jones
doaj   +1 more source

Development Trend and Technical Challenges of the Integration of Offshore Wind Turbine with Marine Ranch

open access: yes南方能源建设
[Introduction] Under the background of "carbon peak and neutrality" target and "ocean power" strategy, the integration of ocean renewable energy represented by offshore wind power and ocean resources represented by marine ranch is the new direction, new ...
Jie YANG   +5 more
doaj   +1 more source

Cross‐scale Material‐Structure Synergy for 2D Metamaterials: Toward Customizable Intelligent Electromagnetic Manipulation in Multiphysics Fields

open access: yesAdvanced Science, EarlyView.
Recent advances in metasurface‐enabled low‐observable technologies are reviewed from the perspective of cross‐scale material–structure synergy. Electromagnetic, thermal, optical, and acoustic stealth are highlighted together with dynamic tuning, programmable coding, data‐driven inverse design, artificial intelligence, multispectral compatibility, and ...
Shuhao Wang   +5 more
wiley   +1 more source

Validation of remote sensing and weather model forecasts in the Agulhas ocean area to 57°S by ship observations

open access: yesSouth African Journal of Science, 2012
The region south of South Africa, encompassing the Agulhas Current and Retroflection, and part of the Southern Ocean, is known for its severe meteorological conditions. Because of these conditions, in-situ observations are rare.
Christophe Messager, Vincent Faure
doaj  

Competing effects of wind and buoyancy forcing on ocean oxygen trends in recent decades

open access: yesNature Communications
Ocean deoxygenation is becoming a major stressor for marine ecosystems due to anthropogenic climate change. Two major pathways through which climate change affects ocean oxygen are changes in wind fields and changes in air-sea heat and freshwater fluxes.
Helene A. L. Hollitzer   +3 more
doaj   +1 more source

Ammonification Process Is Limited by Transformation of Medium Molecular Weight Nitrogenous Organics but Not Hydrolysis of Proteins

open access: yesAdvanced Science, EarlyView.
A multi‐level analytical framework, integrating protein‐level persistence analysis, nontargeted HRMS formula tracking, peptide‐level proteomics, and targeted monomer quantification under varying redox conditions, together with FMO calculations reveal that ammonification is limited by medium molecular weight nitrogenous multimers.
Jing Li   +4 more
wiley   +1 more source

Atmospheric Turbulence Effects on Wind Turbine Wakes over Two-Dimensional Hill: A Wind Tunnel Study

open access: yesEnergies
The wake behavior of wind turbines in complex terrain is influenced by the combined effects of atmospheric turbulence and terrain features, which brings challenges to wind farm power production and safety.
Bowen Yan   +4 more
doaj   +1 more source

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