| 1 | Recent developments in HVDC transmission systems to support renewable energy integration显示文摘The demands for massive renewable energy integration, passive network power supply, and global energy interconnection have all gradually increased, posing new challenges for high voltage direct current(HVDC) power transmission systems, including more complex topology and increased diversity of bipolar HVDC transmission. This study proposes that these two factors have led to new requirements for HVDC control strategies. Moreover, due to the diverse applications of HVDC transmission technology, each station in the system has different requirements. Furthermore, the topology of the AC-DC converter is being continuously developed, revealing a trend towards hybrid converter stations. | Zhou Li Ruopei Zhan Yazhou Li Yan He Jinming Hou Xiaoling Zhao Xiao-Ping Zhang | 2018 | Global Energy Interconnection2018，1，5： | 11 |
| 2 | Obesity pandemic in China:epidemiology,burden,challenges,and opportunities显示文摘China faces a substantial burdensome pandemic of obesity.Recent data from the Chinese Centre for Disease Control and Prevention suggested that over an estimated 8.1%of Chinese adults(85 million Chinese adults)had obesity in 2018,which was three times the level in 2004.[1]To understand the trends of overweight and obesity in China,we accessed the country/territory-level year-specific data of age-standardized summary exposure value(SEV,standing for the pooled proportion among the population),deaths,and disability-adjusted life of years(DALYs)for high body mass index(BMI,high BMI was defined as the BMI level higher than theoretical minimum risk exposure level[25 kg/m2])and its associated diseases for 204 countries/territories between 1990 and 2019 using data from the Global Burden of Disease Collaborative Network.[2]Previous literature described detailed methods for the data synthesis.[3,4]Using the country/territory-level data by year,we calculated the estimated annual percentage changes(EAPCs)with 95%uncertainty intervals(UI)to estimate the annual changing patterns of age-standardized SEV,death,and DALY rates among 204 countries/territories.To compare statistics from China and other regions,we calculated the corresponding estimates from regions including global,North Africa and Middle East,Sub-Saharan Africa,Western Pacific Region,European Union,Latin America and Caribbean,and South Asia. | Jing Li Qingyang Shi Qingyang Gao Xiong-Fei Pan Li Zhao Yazhou He Haoming Tian Zhiming Zhu Sheyu Li | 2022 | Chinese Medical Journal2022，，11： | 3 |
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