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| 1 | Operation of offshore wind farms connected with DRU-HVDC transmission systems with special consideration of faults显示文摘The diode rectifier unit(DRU)-based high-voltage DC(DRU-HVDC) system is a promising solution for offshore wind energy transmission thanks to its compact design, high efficiency, and strong reliability. Herein we investigate the feasibility of the DRU-HVDC system considering onshore and offshore AC grid faults, DC cable faults, and internal DRU faults. To ensure safe operation during the faults, the wind turbine(WT) converters are designed to operate in either current-limiting or voltage-limiting mode to limit potential excessive overcurrent or overvoltage. Strategies for providing fault currents using WT converters during offshore AC faults to enable offshore overcurrent and differential fault protection are investigated. The DRU-HVDC system is robust against various faults, and it can automatically restore power transmission after fault isolation. Simulation results confirm the system performance under various fault conditions. | Rui Li Lujie Yu Lie Xu | 2018 | Global Energy Interconnection2018，1，5： | 4 |
| 2 | Mass flows and river response in rapid uplifting regions-A case of lower Yarlung Tsangpo basin, southeast Tibet, China显示文摘The fluvial geomorphology in tectonically active(particularly rapid uplift)regions often undergoes continuous change.The rapid uplift is coincident with high erosion rates;consequently,incised valleys are formed.Mass flows(for example,avalanches,landslides,and debris flows)in incised valleys can markedly influence fluvial processes and even reshape valley geomorphology.However,these processes and long-term evolution corresponding to mass flows require further clarification.Field campaigns were carried out in the region near the Yigong Tsangpo and Palong Tsangpo Rivers(hereafter the Yigong and Palong Rivers),the two largest tributaries of the lower Yarlung Tsangpo River Tibet,China,to examine the feedback between fluvial processes and mass flows.Remote sensing images from recent decades were used to compare the channel morphology before and after typical mass flows(particularly catastrophic ones).The morphology of the lower Yigong River has evidently been impacted by landslides,while that of the Palong River has mainly been shaped by glacial processes and debris flows.At present,the morphology of the latter consists of alternating sections of gorges and wide valleys,with a staircase-like longitudinal profile.The gorge sections exhibit single and deeply incised channels with a high-gradient channel bed and terraces.In contrast,the wide valley sections consist of lakes,braided or anabranching channels,gentle bed gradients,and thick alluvial deposits.Debris flows occur more frequently in gullies in the reaches of the gorge sections and rarely in gullies along the wide valley sections.The occurrence of mass flow events has resulted in an imbalance of the previous(quasi-)equilibrium in the river morphology;however,this has triggered negative feedback that is driving the transient river morphology to a new state of(quasi-)equilibrium. | Guo-An Yu Jianyin Lu Liqun Lyu Lujie Han Zhaoyin Wang | 2020 | International Journal of Sediment Research2020，35，6： | 3 |
| 3 | 显示文摘 | Yu Laiqiong Zheng Luji Yang Jixiao | 2000 | Materials Chemistry and Physics2000，66，： | 1 |
| 4 | Study of preparation and properties on magnetization and stability for ferromagnetic fluids显示文摘 | Laiqiong Yu Luji Zheng Jixiao Yang | 2000 | Materials Chemistry and Physics2000，66，： | 1 |
| 5 | Study of preparation and properties on magnetization and stability for ferromagnetic fluids显示文摘 | Yu Laiqiong Zheng Luji Yang Jixiao | 2000 | Materials Chemistry and Physics2000，66，： | 1 |
| 6 | Study of preparation and properties on magnetization and stability for ferromag-netic fluids 显示文摘 | Yu Laiqiong Zheng Luji Yang Jixiao | 2000 | Mater Chem Phys2000，，66： | 1 |
| 7 | Study of Preparation and Properties on Magnetization and Stability for Ferromagnetic Fluids显示文摘 | Yu Laiqiong Zheng Luji Yang Jixiao | 2000 | Materials Chemistry and Physics2000，66，： | 1 |
| 8 | SIRT5 is important for bacterial infection by regulating insulin secretion and glucose homeostasis显示文摘Dear Editor,Recent studies indicate that cellular metabolism plays a key role in supporting immune cell development,maintenance and function(Norata et al.,2015).For example,sensing of microbial ligands by macrophages triggers increased glucose metabolism,which delivers energy to support antimicrobial inflammation and the production of cytokines.This effect further enhances the generation of mitochondrial reactive oxygen species(ROS)to fight infections. | Cuiping Zhang Ke Wang Zuojian Hu Lujie Yang Bin Wei Shan Li Xue Qin Pengyuan Yang Hongxiu Yu | 2020 | Protein & Cell2020，11，11： | 0 |
| 9 | REMOTE SENSING FOR ENVIRONMENTAL MONITORING IN GUANGZHOU | Guan Luji, Yu Shaonan (Centre for Remote Sensing, College of Earth and Environmental Sciences, Zhongshan University) (Office of Environmental Protection of Guangzhou) | 1990 | 遥感信息1990，12，A02： | 0 |
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