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| 1 | Measurement and Correlation of Pressure Drop for Gas-Liquid Two-phase Flow in Rectangular Microchannels显示文摘The pressure drop of gas-liquid two-phase flow in microchannel is of fundamental importance in heat and mass transfer processes. In this work,the pressure drop of gas-liquid two-phase flow in horizontal rectangular cross-section microchannels was measured by a pressure differential transducer system. Water,ethanol and n-propanol were used as liquid phase to study the effects of capillary number on pressure drop;air was used as the gas phase. Four microchannels with various dimensions of 100 μm× 200 μm,100 μm× 400 μm,100 μm× 800 μm and 100 μm× 2000 μm(depth × width) were used for determining the influence of configuration on the pressure drop. Experimental results showed that in micro-scale,the capillary number also affected the pressure drop remarkably,and in spite of only one-fold difference in aspect ratio,the variation of pressure drop reached up to near three times under the same experimental conditions. Taking the effects of aspect ratio and surface tension into account,a modi-fied correlation for Chisholm parameter C in the Chisholm model was proposed for predicting the frictional multi-plier,and the predicted values by the proposed correlation showed a satisfactory agreement with experimental data. | MA Youguang JI Xiyan WANG Dongji FU Taotao ZHU Chunying | 2010 | Chinese Journal of Chemical Engineering2010，18，6： | 16 |
| 2 | Late Mesoarchean crust growth event: evidence from the ca. 2.8 Ga granodioritic gneisses of the Xiaoqinling area, southern North China Craton显示文摘Recently, more attention has been paid to Precambrian magma events and crustal growth of the North China Craton(NCC), accompanying with controversy in activity stages and dynamic mechanism. In this study, we report the Archean(2802 ± 13 Ma) granodioritic gneisses in the Taihua Complex from the Xiaoqinling area, located in the southern margin of the NCC. The zircon Lu–Hf isotope analysis of the rocks showed ^(176)Hf/^(177)Hf ratios of0.280977–0.281228, corresponding to ε_(Hf)(t) values ranging from-3.5 to +6.6, and two–stage Hf model ages varying from 2836 to 3409 Ma. It was confirmed that late Mesoarchean(2.9–2.8 Ga) juvenile crust made contribution to the source material of these ca. 2.8 Ga granodioritic gneisses in the Xiaoqinling area. The whole rock geochemical data indicate that the granodioritic gneisses are high-K calc-alkaline series, probably generated at relatively high pressure and temperature, and formed under the continental arc setting. Statistically, we conclude that the magmatic activities during 2.9–2.7 Ga may represent the most intense crustal growth events in the NCC and these Archean rocks at different locations in southern NCC underwent a similar crustal evolution history. | Xiaoliang Jia Xiyan Zhu Mingguo Zhai Yan Zhao Hong Zhang Jialin Wu Tao Liu | 2016 | Science Bulletin2016，61，12： | 16 |
| 3 | Major Advances in the Study of the Precambrian Geology and Metallogenesis of the North China Craton:A Review显示文摘The North China Craton(NCC) is one of the most ancient cratons in the world and records a complex geological evolution since the early Precambrian. In addition to recording major geological events similar to those of other cratons, the NCC also exhibits some unique features such as multistage cratonization(late Archaean and Palaeoproterozoic) and long-term rifting during the Meso–Neoproterozoic. The NCC thus provides one of the best examples to address secular changes in geological history and metallogenic epochs in the evolving Earth. We summarize the major geological events and metallogenic systems of the NCC, so that the evolutionary patterns of the NCC can provide a better understanding of the Precambrian NCC and facilitate comparison of the NCC with other ancient continental blocks globally. The NCC experienced three major tectonic cycles during the Precambrian:(1) Neoarchaean crustal growth and stabilization;(2) Palaeoproterozoic rifting–subduction–accretion–collision with imprints of the Great Oxidation Event and(3) Meso–Neoproterozoic multi-stage rifting. A transition from primitive- to modern-style plate tectonics occurred during the early Precambrian to late Proterozoic and is evidenced by the major geological events. Accompanying these major geological events, three major metallogenic systems are identified:(1) the Archaean banded iron formation system;(2) Palaeoproterozoic Cu–Pb–Zn and Mg–B systems and(3) a Mesoproterozoic rare earth element–Fe–Pb–Zn system. The ore-deposit types in each of these metallogenic systems show distinct characteristics and tectonic affinities. | ZHAO Lei ZHU Xiyan ZHAI Mingguo | 2016 | Acta Geologica Sinica(English Edition)2016，90，4： | 10 |
| 4 | MiR-29a/b/c regulate human circadian gene hPER1 expression by targeting its 3/UTR显示文摘在哺乳动物的几必要生物进步被生理节奏的节奏调整。不过分子的机制 ofoscillating 这些生理节奏的节奏被揭开了,生理节奏的基因的特定的功能不是很, clear.It 被报导了那由 microRNA 将生理节奏的基因击倒是有用策略探索 circadianrhythms 的功能。在这研究,通过屏蔽途径的前面的生物信息学,我们作为有势力 inhibitorsfor 识别了 miR-29a/b/c 人的生理节奏的基因 hPER1。我们进一步发现 miR-29a/b/c 能直接在人的 A549 房间在 mRNA 和蛋白质表示层次指向 hPER1 3untranslated 区域(UTR ) 和下面调整 hPER1。因此,我们的调查结果建议 hPER1 的表示被 miR-29a/b/c 调整,它可以也为 hPER1 的功能提供新线索。 | Xiyan Zhao Xueqiang Zhu Shuting Cheng Yizhou Xie Zhengrong Wang Yanyou Liu Zhou Jiang Jing Xiao Huiling Guo Yuhui Wang | 2014 | Acta Biochimica et Biophysica Sinica2014，46，4： | 7 |
| 5 | Zircon U-Pb geochronology of tuffite beds in the Baishugou Formation:Constraints on the revision of Ectasian System at the southern margin of the North China Craton显示文摘The Xiamaling Formation of 1.4–1.35 Ga in Jixian Section and adjoining areas represents a unique Ectasian Period(Mesoproterozoic)sedimentary sequence in the North China Craton(NCC).Studies carried out during the last decade have contributed significantly in improving our understanding about the Ectasian sedimentation tectonics in the NCC during this transitional interval between the breakup of Supercontinent Columbia and the assembly of Rodinia.The present study reports,for the first time,tuffite beds interlayered with carbonaceous-siliceous slate-phyllite in the upper Baishugou Formation(western Henan Province),at the southern margin of NCC.The LA-MC-ICPMS U-Pb geochronology of zircons from two tuffite samples has yielded almost identical ages of 1330±10 Ma(MSWD=0.43,N=38)and 1332±10 Ma(MSWD=0.90,N=24),that constrain a 1.33 Ga depositional age(Ectasian Period)for the Baishugou Formation.A close similarity in lithological characteristics and their respective superimposed lithostratigraphic relationships of the Baishugou and Xiamaling formations,underline a comparable depositional environment for them.The high-precision geochronology data on the Baishugou Formation would stimulate a relook into the Meso-Neoproterozoic chronostratigraphic framework of the NCC,and further research would lead to a comprehensive understanding of the geological evolution of the NCC during Ectasian Period and its correlation with analogous global events. | Xiyan ZHU Shiyan WANG Wenbo SU Taiping ZHAO Lanyin PANG Mingguo ZHAI | 2020 | Science China Earth Sciences2020，63，11： | 4 |
| 6 | Patterning catalyst via inkjet printing to grow single-walled carbon nanotubes显示文摘Controlled growth of patterned single-walled carbon nanotubes (SWNTs) is an important issue in many applications. Herein, we demonstrated a method to pattern catalyst via inkjet printing for the growth of SWNTs, using metal salt solutions as the inks and an ordinary office-use printer. We printed water solutions of cobalt acetate on hydrophilic Si substrates and grew high quality SWNT films. The composition of the precursor solutions and the hydrophilicity of the substrates were crucial factors to the patterning. | Zeyao Zhang Yitan Li Sheng Zhu Xiyan Liu Xiulan Zhao Meihui Li Haoyu Li Feng Yang Yan Li | 2019 | Chinese Chemical Letters2019，30，2： | 3 |
| 7 | Analyzing Land-use Change in Farming-pastoral Transitional Region Using Autologistic Model and Household Survey Approach显示文摘Land change science(LCS)strives to understand and model land-use change,which will further advance the understanding of multiple issues in the socio-ecological systems.Based on GIS/RS techniques,autologistic model,and household survey method,this study investigated major land use changes and their causes from 1978 to 2008 in Uxin Banner(county-level),Inner Mongolia in China and then developed an understanding of the relationships between household livelihood and land-use pattern.Results showed that cultivated land increased from 1988 to 2000,and leveled off after 2000.Built-up land increased stably for the period 1978–2008.The change of grassland and bare land differed among the three periods.From 1978 to 1988,grassland increased by 23.3%,and bare land decreased by 20.48%.From 1988 to 2000,bare land expanded by 1.7%,but grassland declined by 1.3%.From 2000 to 2008,an increase in grassland area by 1.8%was observed,but a decrease in bare land area by 9.0%was witnessed.The autologistic models performed better than logistic models as indicated by lower Akaike Information Criterion(AIC)values.Factors associated with human activities significantly correlated with the change of cultivated land,forest land,grassland,and built-up land.The produce prices and extensive cultivated land use are major issues in the farming area.This study suggests that completing land circulation systems and maintaining the stability of price are effective solutions.By contrast,reclamation and overgrazing are major concerns in the pastoral areas.Implementing environmental policies effectively,transferring population out of rural pastoral areas,and developing modern animal husbandry are effective ways to address these issues. | ZHU Likai MENG Jijun MAO Xiyan | 2013 | Chinese Geographical Science2013，23，6： | 3 |
| 8 | Economic burden of inpatients with viral hepatitis B-related diseases and the influencing factors显示文摘Objective:The purpose of this study was to analyze the economic burden of inpatients with hepatitis B virus(HBV)-related diseases and the influencing factors so as to provide an effective basis for the development of health prevention and control strategies.Methods:The patients were selected by means of successive sampling in the period between August and December 2012 from those who were diagnosed with HBV-related diseases and hospitalized in countylevel medical institutions of Jiangsu Province.One hundred ninety-six patients were studied,including 3 patients with acute HBV,141 with chronic HBV,18 with compensatory cirrhosis,22 with decompensated cirrhosis,and 12 with liver cancer.This study adopted a questionnaire method to investigate and calculate the direct and indirect economic burden of the subjects according to disease economic burden theories and methods.Multiple linear stepwise regression was used for analysis of the influencing factors for economic burden of inpatients with HBV-related diseases.Results:The average economic burden for the 196 inpatients investigated was RMB 28,971.The direct economic burden was RMB 19,916(68.7%),including direct medical costs(RMB 19,087;95.8%)and direct non-medical costs(RMB 829;4.2%).The indirect economic burden was RMB 9055(31.3%),including patient-related expenses(RMB 6348;70.1%)and nursing expenses(RMB 2707;29.9%).According to the multiple linear stepwise regression analysis results,the hospital stay,proportion of medicine,age,and disease type affected the economic burden of the patients(P<0.05).Conclusion:Patients with HBV-related diseases undertake a heavy economic burden for hospitalization,especially the direct economic burden.Therefore,the inpatients’economic burden can be reduced by shortening the hospital stay,reducing the medical expenses reasonably,and delaying the progression of disease as far as possible according to medical standards. | Hua Zhang Jianqian Chao Liguo Zhu Long Song Xiyan Li Pei Liu | 2013 | Family Medicine and Community Health2013，1，4： | 2 |
| 9 | The S190R mutation in the hemagglutinin protein of pandemic H1N1 2009 influenza virus increased its pathogenicity in mice显示文摘Human influenza viruses preferentially bind to sialic acid-α2,6-galactose (SAα2,6Gal) receptors, which are predominant in human upper respiratory epithelia, whereas avian influenza viruses preferentially bind to SAα2,3Gal receptors. However, variants with amino acid substitutions around the receptor-binding sites of the hemagglutinin (HA) protein can be selected after several passages of human influenza viruses from patients’ respiratory samples in the allantoic cavities of embryonated chicken eggs. In this study, we detected an egg-adapted HA S190R mutation in the pandemic H1N1 virus 2009 (pdmH1N1), and evaluated the effects of this mutation on receptor binding affinity and pathogenicity in mice. Our results revealed that residue 190 is located within the pocket structure of the receptor binding site. The single mutation to arginine at position 190 slightly increased the binding affinity of the virus to the avian receptor and decreased its binding to the long human α2,6-linked sialic acid receptor. Our study demonstrated that the S190R mutation resulted in earlier death and higher weight loss in mice compared with the wild-type virus. Higher viral titers at 1 dpi (days post infection) and diffuse damage at 4 dpi were observed in the lung tissues of mice infected with the mutant virus. | Yongkun Chen Tian Bai Wenfei Zhu Rongbao Gao Zhihong Deng Yi Shi Shumei Zou Yiwei Huang Xiyan Li Fangcai Li Zhaomin Feng Tao Chen Jing Yang Dayan Wang Lidong Gao Yuelong Shu | 2018 | Science China(Life Sciences)2018，61，7： | 1 |
| 10 | Mutations associated with egg adaptation of influenza A(H1N1)pdm09 virus in laboratory based surveillance in China, 2009–2016显示文摘Mutations of influenza virus associated with adaptation occurring during passage in embryonated chicken eggs could result in antigenic change or reduced vaccine effectiveness.In this study,we investigated the mutations of influenza A(H1N1)pdm09 egg isolates from the Chinese National Influenza Surveillance Network between 2009 and 2016.Thirteen mutations were identified in the hemagglutinin(HA)protein from viruses passaged in eggs,in comparing to those in cells.After scanning public database,four mutations,D127E,L191I,D222G/N and Q223R in HA1,which may alter the receptor-binding specificity,were observed frequently.Although the A(H1N1)pdm09 virus has evolved in human for nearly ten years,most egg-cultured viruses acquired one or more further mutations.Using the egg isolates for influenza surveillance requires extra caution because of these selected mutations,and their impacts on antigenicity and receptor-binding property need further evaluation.Currently,most of the influenza vaccines are produced using egg isolates,particularly in China.Thus,there is an urge to promote the establishment of an alternative influenza vaccine production platform. | Lei Yang Yanhui Cheng Xiang Zhao Hejiang Wei Minju Tan Xiyan Li Wenfei Zhu Weijuan Huang Wenbing Chen Jia Liu Zi Li Yuelong Shu Dayan Wang | 2019 | Biosafety and Health2019，1，1： | 1 |
| 11 | Screening criteria of mRNA indicators for wound age estimation显示文摘Wound age estimation is a crucial and challenging problem in forensic pathology.Although mRNA is the most commonly used indicator for wound age estimation,screening criteria are lacking.In the present study,the feasibility of screening criteria using mRNA to determine injury time based on the adenylate-uridylate-rich element(ARE)structure and gene ontology(GO)categories were evaluated.A total of 78 Sprague-Dawley male rats were contused and sampled at 4,8,12,16,20,24,28,32,36,40,44,and 48 h after inflicting injury.The candidate mRNAs were classified based on with or without ARE structure and GO category function.The mRNA expression levels were detected using qRT-PCR.In addition,the standard deviation(STD),mean deviation(MD),relative average deviation(d%),and coefficient of variation(CV)were calculated based on mRNA expression levels.The CV score(CVs)and the CV of CV(CV’CV)were calculated to measure heterogeneity.Finally,based on classic principles,the accuracy of combination of candidate mRNAs was assessed using discriminant analysis to construct a multivariate model for inferring wound age.The results of homogeneity evaluation of each group based on CVs were consistent with the MD,STD,d%,and CV results,indicating the credibility of the evaluation results based on CVs.The candidate mRNAs without ARE structure and classified as cellular component(CC)GO category(ARE-CC)had the highest CVs,showing the mRNAs with these characteristics are the most homogenous mRNAs and best suited for wound age estimation.The highest accuracy was 91.0%when the mRNAs without ARE structure were used to infer the wound age based on the discrimination model.The accuracy of mRNAs classified into CC or multiple function(MF)GO category was higher than mRNAs in the biological process(BP)category.In all subgroups,the accuracy of the composite identification model of mRNA composition without ARE structure and classified as CC was higher than other subgroups.The mRNAs without ARE structure and belonging to the CC GO category were more homogenous,showed higher accuracy for estimating wound age,and were appropriate for rat skeletal muscle wound age estimation. | Qiuxiang Du Tana Dong Yuanxin Liu Xiyan Zhu Na Li Lihong Dang Jie Cao Qianqian Jin Junhong Sun | 2022 | Forensic Sciences Research2022，7，4： | 0 |
| 12 | ERF5.1 modulates carotenoid accumulation by interacting with CCD4.1 in Lycium显示文摘Carotenoids are important natural pigments and have medical and health functions for humans.Carotenoid cleavage dioxygenase 4(CCD4)and ethylene responsive factor(ERF)participate in carotenoid metabolism,but their roles in Lycium have not been discovered.Here,we annotated LbCCDs from the Lycium reference genome and found that LbCCD4.1 expression was significantly correlated with the carotenoid metabolites during Lycium five fruit developmental stages.Over-expression of LbCCD4.1 in NQ’s leaves resulted in a series of significantly lower contents of carotenoid metabolites,includingβ-carotene andβ-cryptoxanthin.Moreover,LbERF5.1,a transcription factor belonging to the ERF family that was located in the nucleus,was isolated.Significant reductions in the carotenoids,especially lutein,violaxanthin and their derivatives,were observed in over-expressing ERF5.1 transgenic NQ’s leaves.Over-expression or virus-induced gene silencing of LbERF5.1 in NQ’s leaves induced a consistent up-or down-expression,respectively,of LbCCD4.1.Furthermore,yeast one-hybrid and dual-luciferase reporter assays showed that ERF5.1 interacted with the promoter of CCD4.1 to increase its expression,and LbERF5.1 could bind to any one of the three predicted binding sites in the promoter of LbCCD4.1.A transcriptome analysis of LbERF5.1 and LbCCD4.1 over-expressed lines showed similar global transcript expression,and geranylgeranyl diphosphate synthase,phytoene synthase,lycopeneδ-cyclase cytochrome,cytochrome P450-type monooxygenase 97A,cytochrome P450-type monooxygenase 97C,and zeaxanthin epoxidase in the carotenoid biosynthesis pathway were differentially expressed.In summary,we uncovered a novel molecular mechanism of carotenoid accumulation that involved an interaction between ERF5.1 and CCD4.1,which may be used to enhance carotenoid in Lycium. | Jianhua Zhao Yuhui Xu Haoxia Li Xinlei Zhu Yue Yin Xiyan Zhang Xiaoya Qin Jun Zhou Linyuan Duan Xiaojie Liang Ting Huang Bo Zhang Ru Wan Zhigang Shi Youlong Cao Wei An | 2023 | Horticulture Research2023，10，12： | 0 |
| 13 | Mineral Resource Science in China:Review and perspective显示文摘Mineral resources are essential to prosperity and security of modern societies.How mineral resources can guar-antee sustainable development of economy in countries,especially those developing countries,has long been a focus of attention of international communities.This paper provides a comprehensive summary for major ad-vance of the research on mineral resources in past decades,and proposes some key issues regarding ore-forming mechanism,exploration and utilization of major and critical mineral resources.On the basis of these aspects,we also identify four priority science issues to be addressed in the future,including(1)mechanism of both metal circulation and extremely high concentration,(2)theories and technologies of prospecting deep-earth resources,(3)investigation of mineral resources in seafloor and polar regions,and(4)efficient,clean and recycling utiliza-tion of mineral resources.It can be expected that new advances in these four issues would tremendously promote the innovation of mineral resource science,and provide scientific and technologic support to meet the demand of mineral resources for human activities and the harmonious development of both mineral-resource exploration and ecological restoration. | Mingguo Zhai Ruizhong Hu Yan Wang Shaoyong Jiang Rucheng Wang Jianwei Li Huayong Chen Zhiming Yang Qingtian Lü Tao Qi Xuefa Shi Yuansheng Li Jianming Liu Ziying Li Xiyan Zhu | 2021 | Geography and Sustainability2021，2，2： | 0 |
| 14 | Advances in the Application of Perovskite Materials显示文摘Nowadays, the soar of photovoltaic performance of perovskite solar cells has set off a fever in the study of metal halide perovskite materials. The excellent optoelectronic properties and defect tolerance feature allow metal halide perovskite to be employed in a wide variety of applications. This article provides a holistic review over the current progress and future prospects of metal halide perovskite materials in representative promising applications, including traditional optoelectronic devices(solar cells, light-emitting diodes, photodetectors, lasers), and cutting-edge technologies in terms of neuromorphic devices(artificial synapses and memristors) and pressure-induced emission. This review highlights the fundamentals, the current progress and the remaining challenges for each application, aiming to provide a comprehensive overview of the development status and a navigation of future research for metal halide perovskite materials and devices. | Lixiu Zhang Luyao Mei Kaiyang Wang Yinhua Lv Shuai Zhang Yaxiao Lian Xiaoke Liu Zhiwei Ma Guanjun Xiao Qiang Liu Shuaibo Zhai Shengli Zhang Gengling Liu Ligang Yuan Bingbing Guo Ziming Chen Keyu Wei Aqiang Liu Shizhong Yue Guangda Niu Xiyan Pan Jie Sun Yong Hua Wu‑Qiang Wu Dawei Di Baodan Zhao Jianjun Tian Zhijie Wang Yang Yang Liang Chu Mingjian Yuan Haibo Zeng Hin‑Lap Yip Keyou Yan Wentao Xu Lu Zhu Wenhua Zhang Guichuan Xing Feng Gao Liming Ding | 2023 | Nano-Micro Letters2023，15，10： | 0 |
| 15 | A dual-stimuli-responsive intelligent layered lanthanide hydroxide for application in information security and latent fingerprint identification显示文摘With the rapid changes in the field of information,the research and development of optical storage materials with high security and large storage capacity are particularly important in the development of contemporary society.However,conventional memo ry materials with static fluorescent outputs have the disadvantages of easy simulation and forgery,which limits their practical application in the protection of confidential information.In this research,a dual-stimuli-responsive intelligent fluorescent material based on Tb^(3+)and Eu^(3+)ions doped layered lanthanide hydroxide(LYH:Eu_(x)Tb_(1-x)DPA)was fabricated,which can realize reversible multi-color luminescence conversion(from green to red)by varying the pH and temperature.Combined with the Morse code and security pattern,the multiple encryption and decryption of confidential information and anti-counterfeiting can also be realized.Therefore,the obtained intelligent fluorescent material has a great application prospect for information security.In addition,due to the excellent color tunability,the material can provide the possibility to obtain potential fingerprints with high contrast and no background interference on different color substrates.The unique dual-stimuli-responsive behavior of this material provides more ingenious design inspiration for the design of multi-color intelligent fluorescent devices. | Jun Xu Tinghui Zhu Jianchao Shi Bo Song Lina Zhang Dan Zhao Xiyan Dong Ning Bi Jian Gou Lei Jia | 2022 | Journal of Rare Earths2022，40，11： | 0 |
| 16 | Different Starting Dominant Strain of Seasonal Influenza in China and Other Neighboring Asian Countries in 2019−2020 Winter Season显示文摘Introduction:Seasonal influenza is a prevalent and highly contagious acute respiratory disease that causes a major global disease burden.New strains of influenza viruses also have the potential to cause an influenza pandemic.Due to the high variability and the consequent uncertainty about virus strains,the prevention and control of influenza are faced with many challenges.Surveillance is considered a key strategy to lead to the prevention and control of influenza,and influenza is one of first infectious diseases to be monitored globally.Methods:The Chinese National Influenza Surveillance Network conducts routine influenza surveillance and includes 410 network laboratories and 554 sentinel hospitals based on the requirements of National Influenza Surveillance Guidelines.China and other countries submit epidemiological and virological data to the WHO FluMart database,which can be viewed online.Results:Seasonal influenza H3N2 virus was the dominant subtype in China when entering the 2019–2020 winter influenza season,while neighboring countries such as Japan and Republic of Korea reported the dominance of H1N1pdm09 and Mongolia and Russia reported a higher proportion of type B virus than type A virus.Conclusions and Implications for Public Health Practice:Asian countries entered the 2019–2020 winter influenza season with different type/subtypes of influenza virus dominant in different areas.Influenza surveillance needs to be strengthened to closely monitor changes in the antigenicity and genetic characteristics of emerging viruses. | Jing Yang Weijuan Huang Yanhui Cheng Tao Chen Minju Tan Qian Guo Hejiang Wei Fei Zhu Tomoko Kuwahara Xiyan Li Xiang Zhao Hideki Hasegawa George F.Gao Dayan Wang | 2020 | China CDC weekly2020，2，4： | 0 |
| 17 | The substitution V379I in PA protein attenuates the pathogenicity of influenza A(H1N1)pdm09 viruses in mice显示文摘Dear Editor,Since August 2010,the world was in the post-pandemic period and the influenza A(H1N1)pdm09(pdmH1N1)virus co-circulated with H3N2 and B virus seasonally(WHO,2010).The continuous surveillance on the pdmH1N1 virus in the post-pandemic period was recommended by WHO.In order to detect unusual events that might indicate a shift in severity disease,or emergence of a new virus,we collected a total of 312 throat swabs of laboratory-confirmed pdmHlNl patients from Hunan and Jilin provinces in | Yongkun Chen Wenfei Zhu Tian Bai Xiaohui Zou Siyu Zhang Yan Sun Xiyan Li XingyYu Xiang Qinglong Zhao Chaoyang Huang Tao Chen Dayan Wang Yuelong Shu | 2017 | Science China(Life Sciences)2017，60，9： | 0 |
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