Zobrazeno 1 - 10
of 6 218
pro vyhledávání: '"Dual polarization"'
Publikováno v:
暴雨灾害, Vol 43, Iss 6, Pp 668-679 (2024)
An extreme freezing weather occurred in Hubei during the early of February in 2024, which accompanying freezing rain, ice pellets, and snow occurred and the intensity of freezing rain ranks first since 1981. Based on conventional meteorological obser
Externí odkaz:
https://doaj.org/article/7884ce9a2ff845e082ef8d8aa24b0c6f
Publikováno v:
Физика волновых процессов и радиотехнические системы, Vol 27, Iss 3, Pp 71-80 (2024)
Background. The need to create, space communication stations based on mobile carriers, for example, on ships, requires the use of multi-band reflector antennas irradiating systems that ensure the combination of not only channels for receiving and tra
Externí odkaz:
https://doaj.org/article/96ec1b53b8d94e2097a6a8bba6e87bcd
Publikováno v:
Qixiang keji, Vol 52, Iss 5, Pp 681-691 (2024)
In this paper, the characteristics of a squall line that occurred in central and northern Zhejiang on 21 July 2022 are analyzed by using S-band dual-polarization radar, X-band phased array radar data, wind retrieval, lightning location and ERA5 reana
Externí odkaz:
https://doaj.org/article/f9c848ca596f46f1addcb64322b19560
Autor:
Mehtab Singh, Somia A. Abd El-Mottaleb, Ahmad Atieh, Hassan Yousif Ahmed, Medien Zeghid, Kottakkaran Sooppy Nisar
Publikováno v:
Alexandria Engineering Journal, Vol 114, Iss , Pp 342-352 (2025)
This paper introduces a novel high-speed Visible Light Communication (VLC) system capable of transmitting data rates of 120 Gbps. The system leverages the multiplexing capabilities of Dual Polarization (DP) and Orbital Angular Momentum (OAM) beams. I
Externí odkaz:
https://doaj.org/article/73e48d6c87e940b5be0408cdcfea86c8
Publikováno v:
暴雨灾害, Vol 43, Iss 4, Pp 431-439 (2024)
At the end of 2023, a large-scale rainfall/snowfall and freezing event occurred in northern and central Henan, featuring variable precipitation phases and accompanied by regional thunderstorms, which was relatively rare. This paper analyzed this proc
Externí odkaz:
https://doaj.org/article/a38f17e23b5f4b2db441fcc5ee90edd1
Publikováno v:
暴雨灾害, Vol 43, Iss 4, Pp 395-406 (2024)
In early February 2024, severe low-temperature rainfall/snowfall and freezing weather events occurred in the eastern parts of Guizhou and the middle and lower reaches of the Yangtze River. Coinciding with the travel period of the Spring Festival, the
Externí odkaz:
https://doaj.org/article/8ef8fe2541744a14be8af287ef31be33
Publikováno v:
应用气象学报, Vol 35, Iss 4, Pp 385-399 (2024)
Two ice and snow storm processes hit middle and eastern China during 31 January to 7 February (Process Ⅰ) and 19 February to 25 February (Process Ⅱ) in 2024, which are the most extreme ice and snow events since 2009. After the long-lasting cryoge
Externí odkaz:
https://doaj.org/article/8f08a7e7908c4b38a36febb29756af51
Autor:
Lucas S. Pereira, Edson R. Schlosser, Abdou H. A. A. Bouari, Marcos V. T. Heckler, Juner M. Vieira, Felix D. Antreich
Publikováno v:
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 23, Iss 4 (2024)
Abstract This paper presents the design of a dual-band and dual-polarized microstrip antenna for global navigation satellite systems reflectometry (GNSS-R) for the L1/E1/B1 and L5/E5a/B2a bands. In order to allow advanced GNSS-R signal processing and
Externí odkaz:
https://doaj.org/article/f4302eefb07a42fbaa246704eabf0bf1
Autor:
Min Zhou, Binrong Jin, Weijie Kong, Anjie Chen, Yuhe Chen, Xiuyun Zhang, Fei Lu, Xi Wang, Xianghua Zeng
Publikováno v:
Advanced Science, Vol 11, Iss 40, Pp n/a-n/a (2024)
Abstract Substituting thermodynamically favorable ethanol oxidation reaction (EOR) for oxygen evolution reaction (OER) engenders high‐efficiency hydrogen production and generates high value‐added products as well. However, the main obstacles have
Externí odkaz:
https://doaj.org/article/ff9783e6fadc4290b967a2b09fe4771a
Publikováno v:
暴雨灾害, Vol 43, Iss 3, Pp 332-341 (2024)
An elevated thunderstorm hail event occurred in Chenzhou and its vicinity in the Nanling region during March 22-23, 2023. A wide range of hail with diameters reaching up to 20 mm was reported, which was rare in elevated convection. In order to enhanc
Externí odkaz:
https://doaj.org/article/3455b7b3d7a54e48bcdea79ec2738c19