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Your search keyword '"Li, Xiangcheng"' showing total 941 results
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941 results on '"Li, Xiangcheng"'

7. Research on the Application Mode of Interactive Electronic Technical Manual in Remote Operation and Maintenance

Author

Chen, Xiong, Yuan, Lin, Han, Zhicheng, Feng, Zhishang, Li, Xiangcheng, Yang, Jin, Appolloni, Andrea, Series Editor, Caracciolo, Francesco, Series Editor, Ding, Zhuoqi, Series Editor, Gogas, Periklis, Series Editor, Huang, Gordon, Series Editor, Nartea, Gilbert, Series Editor, Ngo, Thanh, Series Editor, Striełkowski, Wadim, Series Editor, Zailani, Suhaiza Hanim Binti Dato Mohamad, editor, Yagapparaj, Kosga, editor, and Zakuan, Norhayati, editor

Published
2024
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17. Compact and miniaturized wideband bandpass filter based on substrate integrated waveguide and microstrip line.

Author

Liu, Haihong, Yang, Lingling, Cai, Bin, Wu, Ling, Cheng, Yongzhi, Chen, Fu, Luo, Hui, and Li, Xiangcheng

Subjects
MICROSTRIP transmission lines, BANDPASS filters, INSERTION loss (Telecommunication), MODAL analysis, RESONANCE
Abstract

In this work, we present a simple design of a compact and miniaturized wideband bandpass filter (BPF) based on substrate integrated waveguide (SIW) and microstrip line. Through the order extension, the filtering effect and the order of the Chebyshev response of the designed BPF can be indirectly controlled by preserving square notches (SNs) on the SIW. By introducing one or two SNs in the SIW structure, the resonance frequencies of different modes can be controlled, thus achieving dual- and tri-mode BPFs with wideband and low insert loss. The working principle of the designed BPFs was illustrated by modal analysis, field distribution, and equivalent circuit theory. Based on this, the dual- and tri-mode BPFs with center frequencies of 6.8 and 7 GHz were designed and demonstrated numerically. Further experimental results indicate that the proposed tri-mode BPF has low insertion loss (0.25 dB), compact size (0.27λg2), and wideband bandwidth (60%). In addition, the tri-mode BPF achieves a broadband out-of-band rejection of 1.5f0 (f0 is the center resonance frequency) below the −10 dB level, making it highly promising for various applications in related fields. [ABSTRACT FROM AUTHOR]

Published
2024
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46. Vascular reconstruction in radical resection for hilar cholangiocarcinoma

Author

LI Xiangcheng, CHEN Yananlan, LI Changxian

Subjects
hilar cholangiocarcinoma, vascular resection and reconstruction, portal vein, hepatic artery, Neoplasms. Tumors. Oncology. Including cancer and carcinogens, RC254-282, Surgery, RD1-811
Abstract

Radical resection is the only option of curative treatment for hilar cholangiocarcinoma. Microscopically negative resection margin of bile duct (R0 resection) is critical for long-term survival of patients. However, both portal vein and hepatic artery invasions from hilar cholangiocarcinoma were often found, the negative resection margin could not be gotten. Combined vascular resection and reconstruction provide a possible way to solve this problem. At present, the clinical value of resection of portal vein and hepatic artery combining with reconstruction has been fully recognized. The technique of reconstruction for both portal vein and hepatic artery combined with the clinical significance, preoperative evaluation of imaging and postoperative complications for hilar cholangiocarcinoma were included in this article.

Published
2023
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