Results 101 to 110 of about 851,032 (302)

Editorial: Sources and propagation of ultra-low frequency waves in planetary magnetospheres

Frontiers in Astronomy and Space Sciences, 2022
Lucile Turc, Kazue Takahashi, Jasmine K. Sandhu, Martin Volwerk   +3 more
doaj   +1 more source

Quantifying wave attenuation by seagrass: a comprehensive review of assessment techniques

Frontiers in Marine Science
Seagrasses, often referred to as ecosystem engineers, play a vital role in shallow coastal waters worldwide. They can not only provide key ecological benefits such as ecosystem restoration and carbon sequestration, but also offer significant engineering ...
Xihang Xu, Xihang Xu, Xihang Xu, M. Salauddin, M. Salauddin, M. Salauddin   +5 more
doaj   +1 more source

Low-index-metamaterial for gain enhancement of planar terahertz antenna

AIP Advances, 2014
We theoretically present a high gain planar antenna at terahertz (THz) frequencies by combing a conventional log-periodic antenna (LPA) with a low-index-metamaterial (LIM, |n| < 1).
Qing-Le Zhang, Li-Ming Si, Yongjun Huang, Xin Lv, Weiren Zhu   +4 more
doaj   +1 more source

Numerical Simulation of Coronal Waves interacting with Coronal Holes: I. Basic Features

, 2017
We developed a new numerical code that is able to perform 2.5D simulations of a magnetohydrodynamic (MHD) wave propagation in the corona, and its interaction with a low density region, such as a coronal hole (CH).
Calogovic, Jasa, Hanslmeier, Arnold, Hernandez-Perez, Aaron, Lemmerer, Birgit, Piantschitsch, Isabell, Veronig, Astrid, Vrsnak, Bojan, Zic, Tomislav   +7 more
core   +1 more source

Sustained Wave Transmission Chart [PDF]

Proceedings of the Institute of Radio Engineers, 1917
The Sommerfeld, Austin, Fuller, and Eccles transmission formulas are compared with available data, and the conclusion reached that the Austin formula is most nearly correct. A chart is given whereby, given any five of the six quantities: wave length, transmitting and receiving antenna heights, distance of transmission, transmitting current, and ...
openaire   +1 more source

WIND WAVES TRANSMISSION THROUGH POROUS BREAKWATER

Coastal Engineering Proceedings, 1980
Rubble - mound breakwaters are designed to protect exposed marine areas from excessive wave activity. The resulting interaction of the incident waves with the rubble units is extremely complex due to the variable reflective and frietional properties of the permeable structure.
Stanislaw R. Massel, Piotr Butowski
openaire   +2 more sources

Circular‐Polarization‐Sensitive Organic Photodetectors with a Chiral Nanopatterned Electrode Inverse‐Designed by Genetic Algorithm

Advanced Functional Materials, EarlyView.
A chiral photodetector capable of selectively distinguishing left‐ and right‐handed circularly polarized light is experimentally demonstrated. The device, which features a nanopatterned electrode inverse‐designed by a genetic algorithm within a metal–dielectric–metal nanocavity that incorporates a vacuum‐deposited small‐molecule multilayer, exhibits ...
Kyung Ryoul Park, Jewoong Lee, In‐Suk Choi, Changsoon Kim   +3 more
wiley   +1 more source

Symmetry between absorption and amplification in disordered media

, 1999
We address the issue of whether amplification, like absorption, suppresses wave transmission at large gain, as has been claimed in previous studies of wave propagation in active random media.
A. A. Burkov, A. K. Gupta, A. K. Sen, A. Taflove, A. Yariv, A. Yu. Zyuzin, C. H. Henry, C. M. Soukoulis, C. W. J. Beenakker, D. S. Wiersma, J. C. J. Paasschens, K. Kim, L. D. Landau, M. Sargent III, N. M. Lawandy, P. Pradhan, P. W. Anderson, Qiming Li, R. Rammal, S. John, S. John, S. K. Joshi, T. Makino, V. S. Letokhov, X. Y. Jiang, Xunya Jiang, Z. Q. Zhang   +26 more
core   +1 more source

From Single Atoms to Nanoparticles: Pathways Toward Efficient and Durable Pt/TiO2 Photocatalysts

Advanced Functional Materials, EarlyView.
Platinum single atoms on TiO2 nanosheets evolve into clusters and nanoparticles under ethanol photoreforming and thermal treatments. By controlling deposition and post‐treatments, particle size and location on specific facets are modulated. The study reveals how stability pathways determine efficiency, guiding the design of more durable photocatalysts.
Juan José Delgado, Enqi Bu, Yaning Han, Carlos López‐Cartes, Mónica Calatayud, Huiyan Pan, Xiaowei Chen   +6 more
wiley   +1 more source

Experimental Study on Shear Wave Transmission in Fractured Media. [PDF]

Sensors (Basel), 2022
Cai M, Wu H, Xin Y, Liu P, Zhang C, Tang J, Lin M, Tan L.   +7 more
europepmc   +1 more source