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Akademický článek

Temperature-Dependent Electrical Characteristics and Low-Frequency Noise Analysis of AlGaN/GaN HEMTs

Autor: Qiang Chen, Y. Q. Chen, Chang Liu, Zhiyuan He, Yuan Chen, K. W. Geng, Y. J. He, W. Y. Chen

Publikováno v: IEEE Journal of the Electron Devices Society, Vol 12, Pp 698-702 (2024)

In this paper, we investigate the electrical characteristics of AlGaN/GaN HEMTs at the lowest temperature of 20 K. The measurement results indicate that the output current of the device decreases significantly with increasing temperature at temperatu

Externí odkaz: https://doaj.org/article/e246a3fb2ead4f2f88be27115a184085

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Akademický článek

Experimental Study on the Flow Pattern of Double-hemisphere Rough Elements with Different Streamwise Spacing

Autor: P. Chen, J. Sun, Y. T. Cheng, W. Y. Chen

Publikováno v: Journal of Applied Fluid Mechanics, Vol 16, Iss 8, Pp 1531-1543 (2023)

Particle image velocimetry is used to study the variation around single- and double-hemisphere rough elements with different streamwise spacings immersed in the boundary layer. Instantaneous velocity field information in the streamwise–normal and s

Externí odkaz: https://doaj.org/article/5f5cba58c11240e989f4befceb5a48d9

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Akademický článek

Experimental Study of the Particles Influence on the Pyramid Wake within the Turbulent Boundary Layer

Autor: Y. T. Cheng, J. Sun, P. Chen, W. Y. Chen

Publikováno v: Journal of Applied Fluid Mechanics, Vol 16, Iss 1, Pp 35-46 (2022)

Particle imaging velocimetry (PIV) was used to study the near-field variation of a pyramid rough element in clear water and a liquid–solid boundary layer (thickness: 60 mm). Particles with an average diameter of 355 µm and Stokes number of 4.3 wer

Externí odkaz: https://doaj.org/article/f469148e05e84576a0b3e37ca3a38b06

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Akademický článek

Observation of Gamma Rays up to 320 TeV from the Middle-aged TeV Pulsar Wind Nebula HESS J1849−000

Autor: M. Amenomori, S. Asano, Y. W. Bao, X. J. Bi, D. Chen, T. L. Chen, W. Y. Chen, Xu Chen, Y. Chen, Cirennima, S. W. Cui, Danzengluobu, L. K. Ding, J. H. Fang, K. Fang, C. F. Feng, Zhaoyang Feng, Z. Y. Feng, Qi Gao, A. Gomi, Q. B. Gou, Y. Q. Guo, Y. Y. Guo, Y. Hayashi, H. H. He, Z. T. He, K. Hibino, N. Hotta, Haibing Hu, H. B. Hu, K. Y. Hu, J. Huang, H. Y. Jia, L. Jiang, P. Jiang, H. B. Jin, K. Kasahara, Y. Katayose, C. Kato, S. Kato, I. Kawahara, T. Kawashima, K. Kawata, M. Kozai, D. Kurashige, Labaciren, G. M. Le, A. F. Li, H. J. Li, W. J. Li, Y. Li, Y. H. Lin, B. Liu, C. Liu, J. S. Liu, L. Y. Liu, M. Y. Liu, W. Liu, H. Lu, X. R. Meng, Y. Meng, K. Munakata, K. Nagaya, Y. Nakamura, Y. Nakazawa, H. Nanjo, C. C. Ning, M. Nishizawa, R. Noguchi, M. Ohnishi, S. Okukawa, S. Ozawa, X. Qian, X. L. Qian, X. B. Qu, T. Saito, Y. Sakakibara, M. Sakata, T. Sako, T. K. Sako, T. Sasaki, J. Shao, M. Shibata, A. Shiomi, H. Sugimoto, W. Takano, M. Takita, Y. H. Tan, N. Tateyama, S. Torii, H. Tsuchiya, S. Udo, H. Wang, S. F. Wang, Y. P. Wang, Wangdui, H. R. Wu, Q. Wu, J. L. Xu, L. Xue, Z. Yang, Y. Q. Yao, J. Yin, Y. Yokoe, Y. L. Yu, A. F. Yuan, L. M. Zhai, H. M. Zhang, J. L. Zhang, X. Zhang, X. Y. Zhang, Y. Zhang, Yi Zhang, Ying Zhang, S. P. Zhao, Zhaxisangzhu, X. X. Zhou, Y. H. Zou

Publikováno v: The Astrophysical Journal, Vol 954, Iss 2, p 200 (2023)

Gamma rays from HESS J1849−000, a middle-aged TeV pulsar wind nebula (PWN), are observed by the Tibet air shower array and the muon detector array. The detection significance of gamma rays reaches 4.0 σ and 4.4 σ levels above 25 TeV and 100 TeV,

Externí odkaz: https://doaj.org/article/7a77e778cd2e4df1ac5af5dc59b2f8c2

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Akademický článek

Distributions and assemblages of larval fish in the East China Sea during the northeasterly and southwesterly monsoon seasons of 2008

Autor: W. Y. Chen, M. A. Lee, K. W. Lan, G. C. Gong

Publikováno v: Biogeosciences, Vol 11, Iss 3, Pp 547-561 (2014)

A total of 8459 larval fish were collected from the southern East China Sea during the winter northeasterly monsoon season and the summer southwesterly monsoon season of 2008. The larvae comprised 184 species belonging to 105 families and 162 genera.

Externí odkaz: https://doaj.org/article/2d7d2dfa45f2478ea4bcf15f79f7471a

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