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Your search keyword '"Xu, Junpeng"' showing total 187 results
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187 results on '"Xu, Junpeng"'

1. Quality Control of Bored Piles of Cross-river Bridges Pile Foundation Construction

Author

Sun, Lei, Liu, Xinyan, Xu, Junpeng, Li, Shumin, Li, Mi, Hu, Cong, Zhou, Yan, Yao, Siqi, Chan, Albert P. C., Series Editor, Hong, Wei-Chiang, Series Editor, Mellal, Mohamed Arezki, Series Editor, Narayanan, Ramadas, Series Editor, Nguyen, Quang Ngoc, Series Editor, Ong, Hwai Chyuan, Series Editor, Sachsenmeier, Peter, Series Editor, Sun, Zaicheng, Series Editor, Ullah, Sharif, Series Editor, Wu, Junwei, Series Editor, Zhang, Wei, Series Editor, A Rashid, Ahmad Safuan Bin, editor, Şahin, Sümer, editor, Makhmudov, Kh. F., editor, and Ismail, Mohamed A., editor

Published
2024
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12. Dynamic Time Warping Based Clustering for Time Series Analysis

Author

Zhang, Kun, Lin, Shuai, Sun, Haoxuan, Ma, Liyao, Xu, Junpeng, Akan, Ozgur, Editorial Board Member, Bellavista, Paolo, Editorial Board Member, Cao, Jiannong, Editorial Board Member, Coulson, Geoffrey, Editorial Board Member, Dressler, Falko, Editorial Board Member, Ferrari, Domenico, Editorial Board Member, Gerla, Mario, Editorial Board Member, Kobayashi, Hisashi, Editorial Board Member, Palazzo, Sergio, Editorial Board Member, Sahni, Sartaj, Editorial Board Member, Shen, Xuemin, Editorial Board Member, Stan, Mircea, Editorial Board Member, Jia, Xiaohua, Editorial Board Member, Zomaya, Albert Y., Editorial Board Member, Wang, Shuihua, editor, Zhang, Zheng, editor, and Xu, Yuan, editor

Published
2022
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15. Analysis of Correlation Effects of Double Mutations in Enzymes: A Revised Residual-Contact Network Clique Model.

Author

Zhang, Xianbo, Xu, Junpeng, and Ming, Dengming

Abstract

The relationship between amino acid mutations and enzyme bioactivity is a significant challenge in modern bio-industrial applications. Despite many successful designs relying on complex correlations among mutations at different enzyme sites, the underlying mechanisms of these correlations still need to be explored. In this study, we introduced a revised version of the residual-contact network clique model to investigate the additive effect of double mutations based on the mutation occurrence topology, secondary structures, and physicochemical properties. The model was applied to a set of 182 double mutations reported in three extensively studied enzymes, and it successfully identified over 90% of additive double mutations and a majority of non-additive double mutations. The calculations revealed that the mutation additivity depends intensely on the studied mutation sites' topology and physicochemical properties. For example, double mutations on irregular secondary structure regions tend to be non-additive. Our method provides valuable tools for facilitating enzyme design and optimization. The code and relevant data are available at Github. [ABSTRACT FROM AUTHOR]

Published
2024
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28. Multi-variety Fresh Agricultural Products Distribution Optimization Based on an Improved Cuckoo Search Algorithm

Author

Yang, Wenqiang, Xu, Junpeng, Li, Yongfeng, Diniz Junqueira Barbosa, Simone, Series editor, Chen, Phoebe, Series editor, Du, Xiaoyong, Series editor, Filipe, Joaquim, Series editor, Kotenko, Igor, Series editor, Liu, Ting, Series editor, Sivalingam, Krishna M., Series editor, Washio, Takashi, Series editor, Fei, Minrui, editor, Ma, Shiwei, editor, Li, Xin, editor, Sun, Xin, editor, Jia, Li, editor, and Su, Zhou, editor

Published
2017
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30. High-frequency Resonance Suppression of Railway Traction Power Supply System Based on the Combination of Single-tuned and C-type Filters

Author

Zhang, Haigang, Yin, Ming, Zhou, Haoqiang, Zeng, Song, Wang, Zizhuo, Xu, Junpeng, Wang, Bulai, and Zou, Jinbai

Abstract

Background: Railroad transportation in the actual operation process, there are also many dangerous accidents caused by resonance, which greatly affect the safety of railroad transportation. A comprehensive examination of the operational dynamics within the power branch of a traction substation is imperative for sustaining system equilibrium. Discrepancies between these facets pose a potential threat to the safety of railway transport. Thus, a meticulous analysis of highfrequency resonance characteristics and the formulation of effective suppression techniques become paramount.Objective: Harmonics from grid-side locomotive traction braking are scrutinized under different operational scenarios and different train runs. The aim is to develop an effective harmonic management strategy to normalize the THD and thus maintain the traction power supply system to become more stable.Methods: This study investigates the high-frequency harmonic resonance characteristics using a control variable approach. Harmonics and negative sequences generated during locomotive traction braking under different operating conditions are investigated by means of extensive analysis. These challenges require the implementation of a harmonic management method. This method uses a combination of two monotonic filters and a C filter in parallel. This method applies to different operating conditions and can dynamically adapt harmonics to changes in the number of trains, which is related to the actual dynamics of the traction power system closely.Results: A comparative evaluation of seven operating conditions shows that the filter in this patent exceeds the efficiency of existing methods. The filter reduces the fluctuations during spectral changes, and the voltage distortion rate decreases from the previous 2.33% to 0.55%, making it more adaptable and promising effective harmonic management in high voltage and high current situations.Conclusion: Through multiple simulation tests, a synergistic configuration involving the C-type filter and two single-tuned parallel connections under regenerative braking conditions emerges. This refined, patented filter design not only mitigates the impact of negative sequence during the filtration process but also substantially diminishes high harmonics and THD.

Published
2024
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40. Phosphorylation of PBK/TOPK Tyr74 by JAK2 promotes Burkitt lymphoma tumor growth

Author

Wang, Kaijing, primary, Wei, Jie, additional, Ma, Jing, additional, Jia, Qingge, additional, Liu, Yixiong, additional, Chai, Jia, additional, Xu, Junpeng, additional, Xu, Tianqi, additional, Zhao, Danhui, additional, Wang, Yingmei, additional, Yan, Qingguo, additional, Guo, Shuangping, additional, Guo, Xinjian, additional, Zhu, Feng, additional, Fan, Linni, additional, Li, Mingyang, additional, and Wang, Zhe, additional

Published
2022
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41. Cancer stem cells in esophageal squamous cell carcinoma

Author

Sun, Guorui, primary, Yang, Yanru, additional, Liu, Jin, additional, Gao, Zizhao, additional, Xu, Tianqi, additional, Chai, Jia, additional, Xu, Junpeng, additional, Fan, Zhenge, additional, Xiao, Tian, additional, Jia, Qingge, additional, and Li, Mingyang, additional

Published
2022
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48. Porous Structure of β-Cyclodextrin for CO 2 Capture: Structural Remodeling by Thermal Activation.

Author

Guo, Tianxiang, Zhang, Runan, Wang, Xilai, Kong, Lingfeng, Xu, Junpeng, Xiao, Huining, and Bedane, Alemayehu Hailu

Subjects
CARBON sequestration, CYCLODEXTRINS, GAS absorption & adsorption, POROSITY, RING-opening polymerization, ADSORPTION capacity, SORBENTS
Abstract

With a purpose of extending the application of β-cyclodextrin (β-CD) for gas adsorption, this paper aims to reveal the pore formation mechanism of a promising adsorbent for CO2 capture which was derived from the structural remodeling of β-CD by thermal activation. The pore structure and performance of the adsorbent were characterized by means of SEM, BET and CO2 adsorption. Then, the thermochemical characteristics during pore formation were systematically investigated by means of TG-DSC, in situ TG-FTIR/FTIR, in situ TG-MS/MS, EDS, XPS and DFT. The results show that the derived adsorbent exhibits an excellent porous structure for CO2 capture accompanied by an adsorption capacity of 4.2 mmol/g at 0 °C and 100 kPa. The porous structure is obtained by the structural remodeling such as dehydration polymerization with the prior locations such as hydroxyl bonded to C6 and ring-opening polymerization with the main locations (C4, C1, C5), accompanied by the release of those small molecules such as H2O, CO2 and C3H4. A large amount of new fine pores is formed at the third and fourth stage of the four-stage activation process. Particularly, more micropores are created at the fourth stage. This revealed that pore formation mechanism is beneficial to structural design of further thermal-treated graft/functionalization polymer derived from β-CD, potentially applicable for gas adsorption such as CO2 capture. [ABSTRACT FROM AUTHOR]

Published
2022
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49. Discovery, Optimization, and Structure–Activity Relationship Study of Novel and Potent RSK4 Inhibitors as Promising Agents for the Treatment of Esophageal Squamous Cell Carcinoma

Author

Yuan, Yuan, primary, Xu, Junpeng, additional, Jiang, Lei, additional, Yu, Kangjie, additional, Ge, Yuanyuan, additional, Li, Mingyang, additional, He, Huan, additional, Niu, Qiqi, additional, Shi, Xiayu, additional, Fan, Linni, additional, Chen, Zhuo, additional, Zhao, Zhenjiang, additional, Li, Shiliang, additional, Xu, Yufang, additional, Wang, Zhe, additional, and Li, Honglin, additional

Published
2021
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