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GEOSAT GM的精密轨道确定及精度估计
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作者 赵长印 《天文学报》 CSCD 北大核心 1999年第1期89-93,共5页
对最近公开的GEOSATGM期间的TRANETDoppler数据作了分析,利用这些数据和新的JGM3重力场模型,计算了GEOSAT在GM期间的精密历元.91个6天弧解给出的平均的Doppler残差为3.43mm/s.... 对最近公开的GEOSATGM期间的TRANETDoppler数据作了分析,利用这些数据和新的JGM3重力场模型,计算了GEOSAT在GM期间的精密历元.91个6天弧解给出的平均的Doppler残差为3.43mm/s.估计出所计算的轨道径向精度约为10cm. 展开更多
关键词 GEOSATGM 轨道径向误差 轨道 精度估计 轨道计算
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Trends of foodborne diseases in China: lessons from laboratory- based surveillance since 2011 被引量:66
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作者 Jikai Liu Li Bai +10 位作者 Weiwei Li Haihong Han Ping Fu Xiaochen Ma Zhenwang Bi Xiaorong Yang Xiuli Zhang Shiqi Zhen Xiaoling Deng Xiumei Liu Yunchang Guo 《Frontiers of Medicine》 SCIE CAS CSCD 2018年第1期48-57,共10页
Abstract Foodborne disease is one of the most important public health issues worldwide. China faces various and unprecedented challenges in all aspects of the food chain. Data from laboratory-based foodborne disease s... Abstract Foodborne disease is one of the most important public health issues worldwide. China faces various and unprecedented challenges in all aspects of the food chain. Data from laboratory-based foodborne disease surveillance systems from 2013 to 2016, as well as different regions and ages, can be found along with differences in the patterns of pathogens detected with diverse characteristics. Vibrioparahaemolyticus has been the leading cause of infectious diarrhea in China, especially among adults in coastal regions. Salmonella has been a serious and widely distributed pathogen responsible for substantial socioeconomic burden. Shigella was mostly identified in Northwest China and the inland province (Henan) with less-developed regions among children under 5 years. Data from foodborne disease outbreak reporting system from 2011 to 2016 showed that poisonous animals and plant factors responsible for most deaths were poisonous mushrooms (54.7%) in remote districts in southwest regions. The biological hazard that caused most cases reported (42.3%) was attributed to V. parahaemolyticus, the leading cause of foodborne outbreaks. In this review, we summarize the recent monitoring approach to foodborne diseases in China and compare the results with those in developed countries. 展开更多
关键词 foodbome diseases SURVEILLANCE tranet China
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