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Genomic Surveillance for SARS-CoV-2 Variants of Concern from Imported COVID-19 Cases-the Mainland of China,2021

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China CDC weekly 2022年第31期4卷 680-684页

作者： Yenan Feng Xiang Zhao Zhixiao Chen Kai Nie Zeyuan Yin Ying Xia Ji Wang Peihua Niu Ruhan A Lili Li Dayan Wang Wenjie Tan Xuejun Ma Shiwen Wang Huanyu Wang George F.Gao Cao Chen Wenbo Xu National Institute for Viral Disease Control and Prevention Chinese Center for Disease Control and PreventionBeijingChina National Health Commission Key Laboratory for Medical Virology and Viral Diseases BeijingChina

Introduction:After the epidemic in Wuhan City was brought under control in 2020,local outbreaks of coronavirus disease 2019(COVID-19)in the mainland of China were mainly due to imported COVID-19 cases.The ongoing evolution of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)has continued to generate new variants.Some have been designated as variants of concern(VOCs)by the World Health Organization(WHO).To better assess the role of imported SARS-CoV-2 surveillance and the prevalence of VOCs in 2021,the genomic surveillance data of SARS-CoV-2 from imported COVID-19 cases of 2021 in the mainland of China were analyzed.Methods:The analyses included the number of sequence submissions,time of sequence deposition,and time of detection of the VOCs in order to determine the timeliness and sensitivity of the surveillance.The proportions of VOCs were analyzed and compared with data from the Global Initiative of Sharing All Influenza Data(GISAID).Results:A total of 3,355 sequences of imported cases were submitted from 29 provincial-level administrative divisions,with differences in the number of sequence submissions and median time of sequence deposition.A total of 2,388 sequences with more than 90%genomic coverage were used for lineage analysis.The epidemic trend from Alpha to Delta to Omicron in imported cases was consistent with that in the GISAID.In addition,VOCs from imported cases were usually identified after WHO designation and before causing local outbreaks.Conclusions:The global distribution of SARSCoV-2 VOCs changed rapidly in 2021.Robust genomic surveillance of the imported SARS-CoV-2 in the mainland of China is of great significance.Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2),the etiological agent of coronavirus disease 2019(COVID-19),is constantly mutating under the different circumstances of global transmission(1).The emerging SARS-CoV-2 variants may have potential adverse impacts on epidemic traits and severity.To some extent,it is also capable of escaping natural and vaccine-induced

关键词： mainland imported designated

Mobilizing human resources to highlight the nursing value

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International Journal of Nursing Sciences 2022年第1期9卷 3-4页

作者： Xinjuan Wu The Chinese Nursing Association China

2020 was designated as the International Year of the Nurse and Midwife by WHO.This campaign was launched in recognition of the contribution of nurses and midwives to global health and the celebration of the Bicentenary of Florence Nightingale.Further,2021 has been designated as the International Year of Health and Care Workers(YHCW)in appreciation for their unwavering dedication in the fight against the COVID-19 pandemic.

关键词： nurse nursing designated

GROWTH OF NEW designated CITIES IN CHINA

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Chinese Geographical Science 1999年第2期9卷 1-10页

作者：顾朝林甄峰邱友良叶舜赞

１ＩＮＴＲＯＤＵＣＴＩＯＮＭａｎｙｗｅｓｔｅｒｎｓｃｈｏｌａｒｓｓｕｃｈａｓＣｈａｎｇＳｅｎｄｏｕ（１９６３），ＣｈｅｎｇＴｉｅｊｕｎｅｔａｌ．（１９９４），ａｎｄＳｋｉｎｎｅｒＧ．Ｗ．ｅｔａｌ（１９７７）ｐｕｔｔｈ... 详细信息

１ＩＮＴＲＯＤＵＣＴＩＯＮＭａｎｙｗｅｓｔｅｒｎｓｃｈｏｌａｒｓｓｕｃｈａｓＣｈａｎｇＳｅｎｄｏｕ（１９６３），ＣｈｅｎｇＴｉｅｊｕｎｅｔａｌ．（１９９４），ａｎｄＳｋｉｎｎｅｒＧ．Ｗ．ｅｔａｌ（１９７７）ｐｕｔｔｈｅｉｒｒｅｓｅａｒｃｈｉｎｔｅｒｅ...

关键词： urbanization new designated city China cities urban development

Chromosome heteromorphisms: do they entail a reproductive risk for male carriers?

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Asian Journal of Andrology 2020年第5期22卷 544-546页

作者： Ester Anton Elena Garcia-Guixe Mireia Ramos-Muntada Anna Godo Mireia Sandalinas Joan Blanco Genetics of Male Fertility Group Cell Biology UnitFaculty of BiosciencesAutonomous University of BarcelonaBellaterra(Cerdanyola del Valles)08193Spain Reprogenetics Spain Barcelona 08006Spain

Dear Editor,Chromosome heteromorphisms are described as variations in size and morphology at specific regions that can be detected through classical banding methods.They are mitotically stable variants usually present in a heterozygous state(only one of the homologous chromosomes is heteromorphic).In humans,the most commonly detected heteromorphisms involve the heterochromatic regions of chromosomes 1,9,16,and Y(designated as lqh,9qh,16qh,and Yqh,respectively),and the short-arms,satellites,or stalks of the acrocentric chromosomes 13,14,15,21,and 22(e.g,for chromosome 13 designated as 13p.13ps,and 13pstk,respectively).Pericentric inversions involving the heterochromatic region of chromosomes l,9,and Y are also frequently observed.

关键词： methods. designated chromosomes

A time-aware searchable encryption scheme for EHRs

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Digital Communications and Networks 2019年第3期5卷 170-175页

作者： Yousheng Zhou Xiaofeng Zhao Siling Liu Xingwang Long Wenjun Luo College of Computer Science and Technology Chongqing University of Posts and Telecorrununications Chongqing 400065 China School of Cyber Security and Irformation Law Chongqing University of Posts and Telecommunications Chongqing 400065 China

Despite the benefits of EHRs (Electronic Health Records), there is a growing concern over the risks of privacy exposure associated with the technologies of EHR storing and transmission. To deal with this problem, a timeaware searchable encryption with designated server is proposed in this paper. It is based on Boneh's public key encryption with keyword search and Rivest's timed-release cryptology. Our construction has three features: the user cannot issue a keyword search query successfully unless the search falls into the specific time range;only the authorized user can generate a valid trapdoor;only the designated server can execute the search. Applying our scheme in a multi-user environment, the number of the keyword ciphertexts would not increase linearly with the number of the authorized users. The security and performance analysis shows that our proposed scheme is securer and more efficient than the existing similar schemes.

关键词： Searchable encryption Timed-release designated server Privacy preserving EHRs

China's Top Planner designated Special Chemical Projects in April

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China Chemical Reporter 2009年第14期20卷 10-10页

The National Development and Reform Commission(NDRC), China’s top planner,designated some chemical industrial technology development projects as the nation’ssignificant special projects this April. These special projects will gain the governmentalfund supports.Eight technology development projects concerning new catalyst and reactor have beenlisted in the special projects. They are as follows:

关键词： designated concerning 卜梦 fermentation 力如考司乳裂一曰

A NEW MATHEMATICAL MODEL FOR MASS TRANSFER IN A PACKED COLUMN

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Chinese Journal of Chemical Engineering 1990年第2期 194-205页

作者：张泽廷王树楹余国琮 Beijing Institute of Chemical Technology Beijing Chemical Engineering Research Center Tianjin UniversityTianjin

A new mathematical model,designated as stochastic state pool model,is proposed for simulating the liquid flow andmass transfer behaviour,including the concentration profiles of liquid and gas phascs in a packed column... 详细信息

关键词： packed desorption designated behaviour stochastic mixing Probability inlet fract mentioned

THE SIMULATION OF LIQUID DISTRIBUTION BASED ON MARKOV PROCESS

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Chinese Journal of Chemical Engineering 1990年第1期 112-121页

作者：张泽廷余国琮 Chemical Engineering Research Center Tianjin UniversityTianjin Chemical Engineering Research Center Tianjin UniversityTianjin BeiJing Institute of Chemical Technology

The Markov process with discrete state and time is used to simulate the distribution of liquid flow in apacked column.The theoretical prediction agrees well with the experimental data.

关键词： Probability radial downstream steps illustrated downward designated flowing radius uniformly

STRAIN E26 OF AGROBACTERIUM RADIOBACTER EFFICIENTLY INHIBITS CROWN GALL FORMATION ON GRAPEVINES

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Chinese Science Bulletin 1990年第12期35卷 1055-1056页

作者：梁亚杰狄原渤赵家英马德钦 Institute of Microbiology Academia Sinica Beijing 100080 PRC

Crown gall disease on grapevines is caused by biotype 3 strains of A. tumefaciens. Usually these strains are not sensitive to agrocin 84 produced by A. radiobacter strain 84. Recently, a nonpathogenic biotype 3 agroci... 详细信息

关键词： designated producing Crown chromosome Strain Plasmid inhibit isola likely young