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| 1 | Mechanical Properties and Microstructure of Portland Cement Concrete Prepared with Coral Reef Sand显示文摘The feasibility of using coral reef sand(CRS) in Portland cement concrete is investigated by testing the mechanical property and microstructure of concrete. The composition, structure and properties of the CRS are analyzed. Mechanical properties and microstructure of concrete with CRS are studied and compared to concrete with natural river sand. The relationship between the microstructure and performance of CRS concrete is established. The CRS has a porous surface with high water intake capacity, which contributes to the mechanical properties of concrete. The interfacial transition zone between the cement paste and CRS is densified compared to normal concrete with river sand. Hydration products form in the pore space of CRS and interlock with the matrix of cement paste, which increases the strength. The total porosity of concrete prepared with CRS is higher than that with natural sand. The main difference in pore size distribution is the fraction of fine pores in the range of 100 nm. | 王乾坤 LI Peng 田亚坡 CHEN Wei SU Chunyi | 2016 | Journal of Wuhan University of Technology(Materials Science)2016，31，5： | 19 |
| 2 | Nested-loop Mechanism Based Modular Multilevel Converter Topology and Optimal Design显示文摘普通模块化多电平换流器(modular multilevelconverter,MMC)拓扑中,因子模块数量较多,系统需采集和处理的信息量大,导致控制系统硬件构成复杂。提出一种基于循环嵌套机理的MMC拓扑,其电平输出能力得到显著提升。通过上下两组子模块的协调投切,相对于普通MMC拓扑,新型拓扑输出相同电平数所需的子模块及控制设备数量大幅减少。阐述该新型拓扑的构成方式及基本参数选取原则;针对循环嵌套结构,设计相应的模块协调控制策略;分别以模块用量最小化和换流器运行损耗最小化为目标,优化设计拓扑构成方案。在RTDS中搭建换流器模型,仿真结果表明,新型拓扑具备更强的电平输出能力,并达到大幅减少子模块数量、简化控制系统硬件构成的目标。 | LIU Xinghua ZHAO Chengyong PENG Maolan GUO Chunyi ZHANG Baoshun | 2013 | 中国电机工程学报2013，33，9： | 7 |
| 3 | Optimization and Configuration of Control Parameters to Enhance Small-signal Stability of Hybrid LCC-MMC HVDC System显示文摘This paper investigates the small-signal stability of the hybrid high-voltage direct current(HVDC)transmission system.The system is composed of line commutated converter(LCC)as rectifier and modular multi-level converter(MMC)as inverter under weak AC grid condition.Firstly,the impact of short-circuit ratio(SCR)at inverter side on the system stability is investigated by eigen-analysis,and the key control parameters which have major impact on the dominant mode are identified by the participation factor and sensitivity analysis.Then,considering the quadratic index and damping ratio characteristic,an objective function for evaluating the system stability is developed,and an optimization and configuration method for control parameters is presented by the utilization of Monte Carlo method.The eigenvalue results and the electromagnetic transient(EMT)simulation results show that,with the optimized control parameters,the small-signal stability and the dynamic responses of the hybrid system are greatly improved,and the hybrid system can even operate under weak AC grid condition. | Chunyi Guo Peng Cui Chengyong Zhao | 2022 | Journal of Modern Power Systems and Clean Energy2022，10，1： | 3 |
| 4 | Utilization and fairness in spectrum assignment for opportunistic spectrum access显示文摘 | Chunyi Peng Haitao Zheng Ben Y. Zhao | 2006 | Mobile Networks and Applications2006，，4： | 1 |
| 5 | Utilization and fairness in spectrum assignment for opportunistic spectrum access显示文摘 | Peng Chunyi Zheng Haitao Zhao B Y | 2006 | Mobile Networks and Applications2006，11，： | 1 |
| 6 | Utilization and fairness in spectrum assignment for opportunistic spectrum access 显示文摘 | PENG Chunyi ZHENG Haitao ZHAO B Y | 2006 | Mobile Networks and Applications2006，11，4： | 1 |
| 7 | Utilization and Fairness in Spectrum Assignment for Opportunistic Spectrum Access显示文摘 | Peng Chunyi Zheng Haitao Zhao Ben | 2006 | Mobile Networks and Applications2006，11，4： | 1 |
| 8 | Utilization and fairness in spectrum assignment for opportunistic spectrum access显示文摘 | Peng Chunyi Zheng Haitao Ben Y Zhao | | 0，，04： | 1 |
| 9 | Utilization and fairness in spectrum assignment for opportunistic spectrum access 显示文摘 | PENG Chunyi ZHENG Haitao ZHAO B Y | 2006 | Mobile Networks and Applications2006，11，4： | 1 |
| 10 | Utilization and Fairness in Spectrum Assignment for Opportunistic Spectrum Access显示文摘 | Peng Chunyi Zheng Haitao Zhao Ben Y | 2006 | Mobile Networks and Applications2006，11，4： | 1 |
| 11 | Utilization and Fairness in Spectrum Assignment for Opportunistic Spectrum Access显示文摘 | Peng Chunyi Zheng Haitao Zhao Ben Y | | 0，，04： | 1 |
| 12 | Utilization and fairness in spectrum assignment for opportunistic spectrum access 显示文摘 | Peng Chunyi Zheng Haitao Ben Y Zhao | 2006 | Mobile Netw App12006，11，4： | 1 |
| 13 | Utilization and fairness in spectrum assignment for opportunistic spectrum access 显示文摘 | Peng Chunyi Zheng Haitao Zhao B Y | 2006 | Mobile Networks and Applications2006，11，4： | 1 |
| 14 | Utilization and Fairness in Spectrum Assignment for Opportunistic Spectrum Access显示文摘 | Peng Chunyi Zheng Haitao Zhao Ben | 2006 | Mobile Networks and Applications2006，11，4： | 1 |
| 15 | Utilization and fairness in spectrum assignment for opportunistic spectrum access显示文摘 | Peng Chunyi Zheng Haitao Zhao Benyi | 2009 | Mobile Networks and Applications2009，11，4： | 1 |
| 16 | Utilization and Fair- ness in Spectrum Assignment for Opportunistic Spectrum Ac- cess 显示文摘 | Peng Chunyi Zheng Haitao Zhao B Y | 2006 | Mobile Networks and Applications2006，11，4： | 1 |
| 17 | Utilization and fairness in spectrum assignment for opportunistic spectrum access显示文摘 | Chunyi Peng Haitao Zheng Ben Y. Zhao | 2006 | Mobile Networks and Applications2006，，4： | 1 |
| 18 | Utilization and Fairness in Spectrum Assignment for Opportunistic Spectrum Access显示文摘 | Peng Chunyi Zheng Haitao Zhao Benyi | 2009 | Mobile Networks and Applications2009，11，4： | 1 |
| 19 | The First High-quality Reference Genome of Sika Deer Provides Insights into High-tannin Adaptation显示文摘Sika deer are known to prefer oak leaves,which are rich in tannins and toxic to most mammals;however,the genetic mechanisms underlying their unique ability to adapt to living in the jungle are still unclear.In identifying the mechanism responsible for the tolerance of a highly toxic diet,we have made a major advancement by explaining the genome of sika deer.We generated the first high-quality,chromosome-level genome assembly of sika deer and measured the correlation between tannin intake and RNA expression in 15 tissues through 180 experiments.Comparative genome analyses showed that the UGT and CYP gene families are functionally involved in the adaptation of sika deer to high-tannin food,especially the expansion of the UGT family 2 subfamily B of UGT genes.The first chromosome-level assembly and genetic characterization of the tolerance to a highly toxic diet suggest that the sika deer genome may serve as an essential resource for understanding evolutionary events and tannin adaptation.Our study provides a paradigm of comparative expressive genomics that can be applied to the study of unique biological features in non-model animals. | Xiumei Xing Cheng Ai Tianjiao Wang Yang Li Huitao Liu Pengfei Hu Guiwu Wang Huamiao Liu Hongliang Wang Ranran Zhang Junjun Zheng Xiaobo Wang Lei Wang Yuxiao Chang Qian Qian Jinghua Yu Lixin Tang Shigang Wu Xiujuan Shao Alun Li Peng Cui Wei Zhan Sheng Zhao Zhichao Wu Xiqun Shao Yimeng Dong Min Rong Yihong Tan Xuezhe Cui Shuzhuo Chang Xingchao Song Tongao Yang Limin Sun Yan Ju Pei Zhao Huanhuan Fan Ying Liu Xinhui Wang Wanyun Yang Min Yang Tao Wei Shanshan Song Jiaping Xu Zhigang Yue Qiqi Liang Chunyi Li Jue Ruan Fuhe Yang | 2023 | Genomics, Proteomics & Bioinformatics2023，21，1： | 1 |
| 20 | Utilization and fairness in spectrum assignment for opportunistic spectrum access显示文摘 | Chunyi Peng Haitao Zheng Ben Y. Zhao | 2006 | Mobile Networks and Applications2006，，4： | 1 |
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