Zobrazeno 1 - 10
of 113
pro vyhledávání: '"Zhongming Yan"'
Publikováno v:
Leida xuebao, Vol 13, Iss 3, Pp 696-713 (2024)
Metasurfaces are two-dimensional artificial structures with numerous subwavelength elements arranged periodically or aperiodically. They have demonstrated their exceptional capabilities in electromagnetic wave polarization manipulation, opening new a
Externí odkaz:
https://doaj.org/article/158e51cba26547ff8c271b061e8f4eff
Publikováno v:
Frontiers in Earth Science, Vol 12 (2024)
Introduction: Nearly vertical coal seams present a significant challenge for the coal mining industry due to their difficult accessibility. However, these seams account for a substantial proportion of the world’s coal reserves. Therefore, it is vit
Externí odkaz:
https://doaj.org/article/afb490d40aa340eba0c96d7b748e6bd8
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-14 (2024)
Abstract Rock burst disaster is still one of the most serious dynamic disasters in coal mining, seriously restricting the safety of coal mining. The b value is the main parameter for monitoring rock burst, and by analyzing its changing characteristic
Externí odkaz:
https://doaj.org/article/d71a00238bbc4d4993475e0feec146ad
Effect of the Coexistence of Al2O3 Nanoparticles and Water on Transformer Oil Electrical Performance
Publikováno v:
IEEE Access, Vol 7, Pp 10189-10195 (2019)
It has been found that the introduction of nanoparticles (NPs) into transformer oil can alleviate the destructive effect of water on the insulation properties. Researchers have begun to explore the mechanism behind this phenomenon and try to provide
Externí odkaz:
https://doaj.org/article/85bb587e62f74333aba80f1ad122f437
Publikováno v:
IEEE Access, Vol 7, Pp 112008-112014 (2019)
A new type of multipole field electromagnetic launcher is designed in this paper, which has two parallel layers of multipole structure, and there is a 30-degree relative torsion angle between the inner and the outer one. The armature is designed as a
Externí odkaz:
https://doaj.org/article/873803b5bfba47609284be497dc37944
Publikováno v:
Defence Technology; Apr2024, Vol. 34, p258-268, 11p
Publikováno v:
International Journal of Microwave and Wireless Technologies. :1-9
This paper presents a novel method to improve the working bandwidth and radiation intensity of piezoelectric antenna by using external circuit. This method makes the piezoelectric antenna combined with roles of high radiation intensity and multiple r
Publikováno v:
Defence Technology, Vol 18, Iss 2, Pp 293-304 (2022)
The armature is an important part affecting the energy conversion efficiency of a reluctance accelerator. In this paper, six kinds of soft magnetic materials are chosen and four structures are designed for the armature. At first, the circuit and magn
Publikováno v:
2022 International Applied Computational Electromagnetics Society Symposium (ACES-China).
Publikováno v:
2022 International Applied Computational Electromagnetics Society Symposium (ACES-China).