|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | COVID-19 Outbreak Caused by Contaminated Packaging of Imported Cold-Chain Products—Liaoning Province,China,July 2020显示文摘Summary What is known about this topic?Few major outbreaks of coronavirus disease 2019(COVID-19)have occurred in China after major nonpharmaceutical interventions and vaccines have been deployed and implemented.However,sporadic outbreaks that had high possibility to be linked to cold chain products were reported in several cities of China..What is added by this report?In July 2020,a COVID-19 outbreak occurred in Dalian,China.The investigations of this outbreak strongly suggested that the infection source was from COVID-19 virus-contaminated packaging of frozen seafood during inbound unloading personnel contact.What are the implications for public health practice?Virus contaminated paper surfaces could maintain infectivity for at least 17–24 days at-25℃.Exposure to COVID-19 virus-contaminated surfaces is a potential route for introducing the virus to a susceptible population.Countries with no domestic transmission of COVID-19 should consider introducing prevention strategies for both inbound travellers and imported goods.Several measures to prevent the introduction of the virus via cold-chain goods can be implemented. | Huilai Ma1 Jianqun Zhang Ji Wang Ying Qin Cao Chen Yang Song Liang Wang Jun Meng Lingling Mao Fengqin Li Ning Li Jian Cai Yong Zhang Dayan Wang Yunting Xia Hong Wang Shaofeng Jiang Xiang Zhao Peihua Niu Wenjie Tan Tao Ma Yecheng Yao Naiying Mao Zhen Zhu Tianjiao Ji Qian Yang Baoying Huang Li Zhao Jianxing Yu Li Bai Shuangli Zhu Dongyan Wang Yan Zhang Yingwei Sun Mingchun Luan Yanhai Wang Haibo Sun Shihong Yang Zhijian Bo Xiang Ren Zhongjie Li George Fu Gao Wei Yao Wenqing Yao Zijian Feng Wenbo Xu | 2021 | China CDC weekly2021，3，21： | 16 |
| 2 | Changes of Temperature and Precipitation Extremes in Hengduan Mountains,Qinghai-Tibet Plateau in 1961-2008显示文摘Variations and trends in extreme climate events are more sensitive to climate change than the mean values,and so have received much attention.In this study,twelve indices of temperature extremes and 11 indices of precipitation extremes at 32 meteorological stations in Hengduan Mountains were examined for the period 1961-2008.The results reveal statistically significant increases in the temperature of the warmest and coldest nights and in the frequencies of extreme warm days and nights.Decreases of the diurnal temperature range and the numbers of frost days and ice days are statistically significant.Regional averages of growing season length also display the trends consistent and significant with warming.At a large proportion of the stations,patterns of temperature extremes are consistent with warming since 1961:warming trends in minimum temperature indices are greater than those relating to maximum temperature.As the center of the Shaluli Mountain,the warming magnitudes decrease from inner to outer.Changes in precipitation extremes is low:trends are difficult to detect against the larger inter-annual and decadal-scale variability of precipitation,and only the wet day precipitation and the regional trend in consecutive dry days are significant at the 0.05 level.It can be concluded that the variation of extreme precipitation events is not obvious in the Hengduan Mountains,however,the regional trends generally decrease from the south to the north.Overall,the spatial distribution of temporal changes of all extreme climate indices in the Hengduan Mountains illustrated here reflects the climatic complexity in mountainous regions. | NING Baoying YANG Xiaomei CHANG Li | 2012 | Chinese Geographical Science2012，22，4： | 14 |
| 3 | Source of major anions and cations of snowpacks in Hailuogou No.1 glacier, Mt. Gongga and Baishui No.1 glacier, Mt. Yulong显示文摘积雪场样品是从二条冰河的 colleted:在 2006 年 6 月的 Baishui No.1 冰河和 Hailuogou No.1 冰河。海盐离子 tracer。 | LI Zongxing HE Yuanqing PANG Hongxi YANG Xiaomei JIA Wenxiong ZHANG Ningning WANG Xufeng NING Baoying YUAN Lingling SONG Bo | 2008 | Journal of Geographical Sciences2008，18，1： | 13 |
| 4 | Synoptic-scale variation of δ^(18)O in summer monsoon rainfall at Lijiang, China显示文摘Based on the daily δ^(18)O data in June―September 2003 at Lijiang and the daily mean NCEP/ NCAR reanalysis data, synoptic-scale variation of δ^(18)O in summer monsoon rainfall was investigated. The 'precipitation amount effect' is obvious for the daily δ^(18)O variation, whereas the 'temperature effect' is insignificant. Alternate occurrences of active phase and break phase of the southwest monsoon probably influence the synoptic-scale δ^(18)O variation prominently. Moreover, the isotopic composition in precipitation during the late monsoon months is presumably influenced significantly by recycling of monsoon precipitation. Both the above factors disturb the 'amount effect' of isotopic variation in the monsoon region. This study also indicates that the synoptic-scale rainfall δ^(18)O variation at Lijiang in summer is domi-nated by the Indian monsoon depression (low pressure) system at large scale. These results are important for further studying the 'amount effect' and reconstructing paleoclimate in the monsoon region. | PANG Hongxi HE Yuanqing LU Aigang ZHAO Jingdong NING Baoying YUAN Lingling SONG Bo | 2006 | Chinese Science Bulletin2006，51，23： | 9 |
| 5 | Impacts of Yulong Mountain Glacier on Tourism in Lijiang显示文摘Yulong 山上的冰河是在丽江的最重要的吸引力之一,云南,中国。但是它不停地由于全球温暖撤退这些年,它肯定在丽江显著地影响地区性的旅游。这研究在在那里的旅游上估计 Yulong 山的冰河撤退的效果。原始资料包括人口分布通过来宾调查被收集,动机,停留时间,;关于到丽江的从旅游者的每个旅游资源的意见,以及关于舞台的点,他们访问了或将访问的问题,他们在他们的访问期间每天花费了多少;他们的访问行为怎么将在冰河将消失的假设之上被改变。这些数据被用来在丽江分析对旅游的冰河的贡献的比例;在地区性的旅游份量上上估计冰河的影响。根据调查,这能被结束四分之三的到丽江的旅游者对 Yulong 山冰河感兴趣,显示冰河为观光旅游者拥有著名呼吁。我们的分析的结果显示出那大约 689,013 ~1 , 508,247 个旅游者,为 19.63 ~4 的财务总数的 2.97 % 3,510,000 个国内旅游者到在 2004 的丽江,不当冰河不在时来到丽江,导致 84,382,508 ~ 的可能的直接经济损失 184,713,011 美金( viz 。700,374,824 ~ 1,533,117,993 RMB ) ;一显著地在吸引力半径减少。 | YUAN Lingling LU Aigang NING Baoying HE Yuanqing | 2006 | Journal of Mountain Science2006，3，1： | 3 |
| 6 | Comparisons of stable isotopic fractionation in winter and summer at Baishui Glacier No.1,Mt.Yulong,China显示文摘Based on the data of δ18O in surface snow, snow pits, meltwater and the glacier-fed river water at Baishui Glacier No.1, Mt. Yulong, the isotopic fractionation behaviors in the typical monsoonal temperate glacier system in winter and summer were compared. The results indicate that the isotopic fractionation degree in summer is greater than that in winter, suggesting that the snow/ice melting is more intense in summer. Moreover, whenever it is in winter or summer, from surface snow to meltwater, and to glacier-fed river water, the gradient of δ18O with altitude gradually increases. This shows that the degree of isotopic fractionation gradually strengthens when surface snow is being converted into meltwater and finally into glacial river water, which suggests that the influence of post-depositional processes on δ18O gradient in the monsoonal temperate glacier region differs spatially. | PANG Hongxi HE Yuanqing LU Aigang ZHAO Jingdong NING Baoying YUAN Lingling SONG Bo ZHANG Ningning | 2006 | Journal of Geographical Sciences2006，16，3： | 2 |
您所在的机构暂未开通此部分的功能，请联系管理员