Results 111 to 120 of about 44,233 (308)

Observation of Horizontal Gravity Wave Activity in the Upper Stratosphere Using Monostatic Rayleigh Lidar

Atmosphere
The prediction accuracy of the General Circulation Model (GCM) is influenced by the effectiveness of gravity wave activity parameterization. Although research focuses on small-scale horizontal gravity wave activity as a carrier for energy and momentum ...
Xueming Li, Xuanyu Zheng, Shaohua Gong, Qihai Chang   +3 more
doaj   +1 more source

Saturation of the inverse cascade in surface gravity-wave turbulence

, 2020
International audienceWe report on the observation of surface gravity-wave turbulence at scales larger than the forcing ones in a large basin. In addition to the downscale transfer usually reported in gravity-wave turbulence, an upscale transfer is ...
Aumaître, Sébastien, Bonnefoy, F., Mordant, Nicolas, Cazaubiel, Annette, Michel, Guillaume, Berhanu, Michaël, Falcon, Eric, Prabhudesai, Gaurav   +7 more
core   +1 more source

W‐N‐C Tandem Catalytic Centers Mediating Efficient Charge Transfer for the Enhanced Radical‐Path U(VI) Photoreduction

Advanced Science, EarlyView.
This work constructed a tandem W−N−C center to simultaneously achieve the regulation of reaction pathways and optimization of charge separation efficiency. The Lewis‐acidic W6+ sites activated O2 to generate O2−$O_2^ - $, with enhanced charge separation via electronic modulation, steering U(VI) reduction down an efficient radical pathway.
Zhiyao Wu, Jinhao Xu, Hao Fu, Yuxiang Deng, Nannan Wang, Wenhua Zhang, Peng Zhang, Zhiwei Huang, Zhenpeng Cui, Shu‐Xian Hu, Wangsuo Wu, Duoqiang Pan   +11 more
wiley   +1 more source

The propagation of mountain waves into the stratosphere: Quantitative evaluation of three-dimensional simulations

, 2000
On 6 January 1992 measurements of a mountain wave with significant amplitude were taken over the southern tip of Greenland during an ER-2 flight at an altitude of about 20 km.
Leutbecher, Martin, Volkert, Hans
core  

Wave turbulence on the surface of a fluid in a high-gravity environment [PDF]

, 2019
International audienceWe report on the observation of gravity-capillary wave turbulence on the surface of a fluid in a high-gravity environment. By using a large-diameter centrifuge, the effective gravity acceleration is tuned up to 20 times the Earth ...
van Loon, Jack, Mawet, Sébastien, Grosjean, Galien, Cazaubiel, A., Darras, Alexis, Cazaubiel, Annette, Dorbolo, S., Dorbolo, Stéphane, Van Loon, J. J.W.A., Falcon, E., Falcon, Eric, Darras, A., van Loon, Jack,, Mawet, S., Grosjean, G.   +14 more
core   +1 more source

An Embodied Paper‐Based Microfluidic Al‐Air Battery for Enduring Untethered Insect‐Scale Robots

Advanced Science, EarlyView.
This work presents a centimeter‐scale microfluidic aluminum–air battery (MFAAB) with dual‐surface anode and F−‐mediated byproduct decomposition. The design enables a high capacity of 2697.05 mAh/g Al and delivers tens of milliwatts to power LEDs, motors, and a toy car.
Yun Yang, Tao Jiang, Zhongyue Lu, Dapeng Fan, Zucheng Yi, Zirong Luo   +5 more
wiley   +1 more source

Middle Atmospheric Doppler Rayleigh Winds, Temperatures, and Gravity Waves at Kühlungsborn and ALOMAR [PDF]

EPJ Web of Conferences
We demonstrate the capability of the Doppler Rayleigh lidars at Kühlungsborn and ALOMAR to accurately measure temperature and horizontal wind in the stratosphere and mesosphere. Comparisons are shown with radar, satellite and ECMWF.
Wing Robin, Gerding Michael, Franco-Diaz Eframir, Strelnikova Irina, Mossad Mohamed, Fiedler Jens, Conte Fede, Baumgarten Gerd   +7 more
doaj   +1 more source

Gravity instabilities in the Dohrn canyon (Bay of Naples, Southern Tyrrhenian sea): potential wave and run-up (tsunami) reconstruction from a fossil submarine landslide [PDF]

, 2011
We discuss a mathematical model for wave and run-up generated submarine landslides in the canyons of the Bay of Naples (Magnaghi-Dohrn canyon system).
Di Fiore, Vincenzo, Aiello, Gemma, Vincenzo di Fiore, Gemma Aiello, D'Argenio , Bruno, Bruno D'Argenio   +5 more
core   +1 more source

A Data‐Driven Inverse Design Methodology for Magnetic Soft Millirobots Navigating in Confined Spaces

Advanced Science, EarlyView.
A data‐efficient inverse design framework automates the optimization of magnetic soft millirobots for confined‐space navigation. Integrating a physics‐based Cosserat rod model with Bayesian optimization efficiently identifies high‐performance geometries.
Ziyu Ren, Hong Wang, Chak Wang Tse, Yi Zheng, Xi Chen, Wenqi Hu   +5 more
wiley   +1 more source

Unidirectional Evaporation‐Induced Tunable and Continuous Gradient Composite Structure for Absorption‐Dominant Electromagnetic Interference Shielding

Advanced Science, EarlyView.
A continuous conductivity gradient is formed in a porous MXene/melamine foam via directional evaporation, thereby improving impedance matching and enhancing electromagnetic attenuation. The resulting monolithic composite delivers absorption‐dominant EMI shielding with ultralow reflection, offering a simple route toward lightweight EMI shielding ...
Dawei Zhang, Yan Zhang, Baosong Li, Abdallah Kamal, Haider Butt, Kin Liao, Lianxi Zheng   +6 more
wiley   +1 more source