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Engineering Highly Photoefficient and Function-Tunable Molecular Rotary Motors toward Sunlight Responsiveness
LwHM: lightweight hybrid classifier for SDN-attack detection using recursive feature elimination
Superior Stable NIR-II Emissive Radicals Enabled by a Symmetric Dual-Acceptor Engineering for Immunogenic Sono/Photodynamic Theranostics
Comparison of eyes with shallow vs. non-shallow anterior chambers undergoing cataract surgery: a multicenter study
External and Internal Cultivation Strategy toward Ultra-Bright Lanthanide Nano-Bioprobes
Driven to disconnect: desire thinking, desire for dissociation, motivation, and resilience in gaming disorder
A Multifunctional Near-Infrared Platinum(II) Agent for High-Performance Chemo-Photothermal Therapy
Climate change impact on future Egypt’s wind energy: a CMIP6-based assessment of power output
Abstract Egypt possesses substantial potential for renewable energy generation, prompting heavy national investments to increase the share of wind power in its overall energy portfolio. Consequently, it is crucial to evaluate the long-term vulnerability of future wind energy production to climate change. This study fills a critical gap in regional climate-energy modelling by providing a novel quantification of turbine-specific capacity ratios across four Shared Socioeconomic Pathways (SSP1-2.6, SSP2-4.5, SSP3-7.0 and SSP5-8.5). Through a comparative assessment of 23 CMIP6 Global Climate Models (GCMs), EC-Earth3-Veg, EC-Earth3, and CESM2-WACCM were identified as the most reliable models against historical ERA5-Land data using the Kling-Gupta Efficiency (KGE) metric, followed by Quantile Mapping for bias correction of both historical and future scenarios. Evaluating nine wind turbine models (T1–T9) revealed that T1 and T2 maintained the highest historical capacity ratios, peaking at 68.0–76.5% and 59.5–68.0%, respectively. By 2100, meteorological projections indicate a regional warming trend coupled with a decrease in mean wind speed; notably, the high-emission SSP5-8.5 scenario projects the highest mean temperature (28 °C) and lowest mean wind speed (3.8 m/s). Despite these declines, future projections for T1 and T2 indicate resilient power generation and localized increases in strategic locations, such as Ras Ghareb and southern Egypt, particularly under the SSP2-4.5 scenario. Ultimately, these findings provide essential data-driven insights for energy planners to optimize turbine selection and site development, ensuring the long-term resilience of Egypt’s wind energy infrastructure.
Gas–Solid van der Waals Interaction Driving the Dynamic Evolution of Surface Nanostructures
Taxonomic invisibility and knowledge shortfalls in terrestrial molluscs of the Caatinga Dominion, a seasonally dry tropical region
A Near-Infrared-Triggered Luminescence-Activated System for In Vivo Biomacromolecular Tagging and Photocatalytic Crosslinking for Large-Scale Investigation of RNA-Protein Complexes in Living Mice
Collagen- and elastin-derived biomarkers and acute severe exacerbations in COPD: a sub study of the CORTICO-COP trial
Manifestation of Ground-State Baird Aromaticity in a Neutral Hexaazaphenanthrene Derivative with a Topologically Unanticipated Triplet Ground State
Hysteresis in the aerodynamic forces and moments of a discus governed by laminar separation bubbles
Abstract This study investigates the aerodynamic forces and moments acting on a women’s discus as functions of angle of attack, freestream velocity, and spin rate about its axis of symmetry. Wind tunnel experiments were conducted to measure these aerodynamic forces and moments and to visualize the flow field using oil-flow visualization and particle image velocimetry (PIV). The results show that no significant dependence of the aerodynamic coefficients on the spin parameter was observed within the tested ranges (20–30 m/s; 0–7 rev/s). The drag, lift, and pitching moment coefficients depend strongly on the angle of attack, whereas the side force and the rolling and yawing moment coefficients remain approximately zero. The drag, lift, and pitching moment coefficients increase with angle of attack until stall occurs at approximately 28–30°, after which the lift and pitching moment decrease sharply. Stall recovery occurs at a lower angle of attack, around 25°, corresponding to a hysteresis window of approximately 4–5°. Surface static pressure measurements and flow visualizations suggest that this hysteresis is associated with the history-dependent formation and collapse of a leading-edge laminar separation bubble, which appears during increasing-angle-of-attack process with flow reattachment and disappears during the decreasing-angle-of-attack process.