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97篇 您的检索式:作者名="Xuejun Zhou"
    题名 作者 年代 出处 被引量
1Effect of N and P addition on soil organic C potential mineralization in forest soils in South China显示文摘Atmospheric nitrogen deposition is at a high level in some forests of South China. The effects of addition of exogenous N and P on soil organic carbon mineralization were studied to address: (1) if the atmospheric N deposition promotes soil C storage through decreasing mineralization; (2) if the soil available P is a limitation to organic carbon mineralization. Soils (0-10 cm) was sampled from monsoon evergreen broad-leaved forest (MEBF), coniferous and broad-leaved mixed forest (CBMF), and Pinus massoniana forest (PMF) in Dinghushan Biosphere Reserve (located in Guangdong Province, China). The soils were incubated at 25°C for 45 weeks, with addition of N (NH4NO3 solution) or P (KH2PO4 solution). CO2-C emission and the inorganic N (NH4+-N and NO3?-N) of the soils were determined during the incubation. The results showed that CO2-C emission decreased with the N addition. The addition of P led to a short-term sharp increase in CO2 emission after P application, and the responses of CO2-C evolution to P addition in the later period of incubation related to forest types. Strong P inhibition to CO2 emission occurred in both PMF and CBMF soils in the later incubation. The two-pool kinetic model was fitted well to the data for C turnover in this experiment. The model analysis demonstrated that the addition of N and P changed the distribution of soil organic C between the labile and recalcitrant pool, as well as their mineralization rates. In our experiment, soil pH can not completely explain the negative effect of N addition on CO2-C emission. The changes of soil inorganic N during incubation seemed to support the hypothesis that the polymerization of added nitrogen with soil organic compound by abiotic reactions during incubation made the added nitrogen retard the soil organic carbon mineralization. We conclude that atmospheric N deposition contributes to soil C accretion in the three subtropical forest ecosystems, however, the shortage of soil available P in CBMF and PMF may also retard soil organic C mineralization.OUYANG, Xuejun ZHOU, Guoyi HUANG, Zhongliang ZHOU, Cunyu LI, Jiong SHI, Junhui ZHANG, Deqiang 2008Journal of Environmental Sciences2008,20,9:17
2Ductile deformation within Upper Himalaya Crystalline Sequence and geological implications,in Nyalam area,Southern Tibet显示文摘The South Tibet Detachment System(STDS) is a flat normal fault that separates the Upper Himalaya Crystalline Sequence(UHCS) below from the Tethyan Sedimentary Sequence(TSS) above.Timing of deformations related to the STDS is critical to understand the mechanism and evolution of the Himalaya collision zone.The Nyalam detachment(ND)(~86°E) locates in the middle portion of STDS(81°-89°E).Dating of deformed leucocratic dykes that are most probably syntectonic at different depth beneath the ND,allow us to constrain the timing of deformation.(1) Dyke T11N37 located ~3500 m structurally below the ND emplaced at 27.4± 0.2 Ma;(2) Dyke T11N32 located ~1400 m structurally below the ND emplaced at 22.0±0.3 Ma;(3) T11N25 located within the top to the north STD shear zone,~150 m structurally below the ND,emplaced at 17.1±0.2 Ma.Combining ND footwall cooling history and T11N25 deformation temperature,we indicate a probable onset of top to the north deformation at ~16 Ma at this location.These results show an upward younging of the probable timing of onset of the deformation at different structural distance below the ND.We then propose a new model for deformation migration below the ND with deformation starting by pure shear deformation at depth prior to ~27.5 Ma that migrates upward at a rate of ~ 0.3 mm/a until ~18 Ma when deformation switches to top to the north shearing in the South Tibet Detachment shear zone(STDsz).As deformation on the ND stops at 14-13 Ma this would imply that significant top to the North motion would be limited to less than 5 Ma and would jeopardize the importance of lower channel flow.LIU XiaoBing LIU XiaoHan LELOUP P.H. MAHEO G. PAQUETTE J.L. ZHANG XinGang ZHOU XueJun 2012Chinese Science Bulletin2012,57,26:14
3Comprehensive Learning Multi-Objective Particle Swarm Optimizer for Crossing Waypoints Location in Air Route Network显示文摘ZHOU Chi ZHANG Xuejun CAI Kaiquan ZHANG Jun 2011Chinese Journal of Electronics2011,20,3:10
4Grhl3 induces human epithelial tumor cell migration and invasion via downregulation of E-cadherin显示文摘Grainyhead 基因涉及愈合弯屈和发展神经试管闭合。转移在细胞从主要肿瘤的地点传播哪个癌症并且在远器官建立第二等的肿瘤期间是一个 multistep 过程。粘附蛋白质 E-cadherin 在转移起一个必要作用。考虑到在在皮或乳癌发生在侵略的获得期间的愈合创伤的过程和 EMT 发生的 epithelialmesenchymal 转变(EMT ) 的类似的高度,我们在癌症侵略调查了 Grainyhead 基因的角色。这里,我们证明在象 Grainyhead 一样之间有一种反的关系 3 (Grhl3 ) 并且在某上皮的肿瘤房间的 E-cadherin 表示排队。在 E-cadherin-positive 上皮的肿瘤房间线的 Grhl3 的 Overexpression,由更少的侵略描绘了,产生了 E-cadherin 基因的 transcriptional 阻塞并且支持了房间移植和房间侵略。相反地, Grhl3 弄空禁止了房间移植和房间侵略并且与 E-cadherin 表示的获得被联系。为了推进,探索 Grhl3 由调整了 E-cadherin 表示的机制, E-cadherin 倡导者报告分析被表现,结果出现了那 Grhl3 镇压 E-cadherin 基因表示由对在近似 E-cadherin 倡导者在场的电子盒子直接或间接地有约束力。一起拿,我们的调查结果在癌症房间由 E-cadherin 的 downregulation 在移植和侵略的正式就职为 Grhl3 定义一个主要角色。Pan Zhao Sijia Guo Zhenzhen Tu Lijun Di Xiaoiun Zha Haisheng Zhou Xuejun Zhang 2016Acta Biochimica et Biophysica Sinica2016,0,3:9
5Electrochemically driven conversion reaction in fluoride electrodes for energy storage devices显示文摘Exploring electrochemically driven conversion reactions for the development of novel energy storage materials is an important topic as they can deliver higher energy densities than current Li-ion battery electrodes.Conversion-type fluorides promise particularly high energy densities by involving the light and small fluoride anion,and bond breaking can occur at relatively low Li activity(i.e.,high cell voltage).Cells based on such electrodes may become competitors to other envisaged alternatives such as Lisulfur or Li-air systems with their many unsolved thermodynamic and kinetic problems.Relevant conversion reactions are typically multiphase redox reactions characterized by nucleation and growth processes along with pronounced interfacial and mass transport phenomena.Hence significant overpotentials and nonequilibrium reaction pathways are involved.In this review,we summarize recent findings in terms of phase evolution phenomena and mechanistic features of(oxy)fluorides at different redox stages during the conversion process,enabled by advanced characterization technologies and simulation methods.It can be concluded that well-designed nanostructured architectures are helpful in mitigating kinetic problems such as the usually pronounced voltage hysteresis.In this context,doping and open-framework strategies are useful.By these tools,simple materials that are unable to allow for substantial Li nonstoichiometry(e.g.,by Li-insertable channels)may be turned into electroactive materials.Chilin Li Keyi Chen Xuejun Zhou Joachim Maier 2018npj Computational Materials2018,,1:8
6Carbon-based derivatives from metal-organic frameworks as cathode hosts for Li–S batteries显示文摘Lithium-sulfur batteries(Li–S batteries) are promising candidates for the next generation high-energy rechargeable Li batteries due to their high theoretical specific capacity(1672 m Ahg-1) and energy density(2500 Wh kg-1). The commercialization of Li–S batteries is impeded by several key challenges at cathode side, e.g. the insulating nature of sulfur and discharged products(Li2S 2 and Li2S), the solubility of long-chain polysulfides and volume variation of sulfur cathode upon cycling. Recently, the carbonbased derivatives from metal-organic frameworks(MOFs) has emerged talent in their utilization as cathode hosts for Li–S batteries. They are not only highly conductive and porous to enable the acceleration of Li +/e-transfer and accommodation of volumetric expansion of sulfur cathode during cycling, but also enriched by controllable chemical active sites to enable the adsorption of polysulfides and promotion of their conversion reaction kinetics. In this review, based on the types of MOFs(e.g. ZIF-8, ZIF-67, Prussian blue, Al-MOF, MOF-5, Cu-MOF, Ni-MOF), the synthetic methods, formation process and morphology, structural superiority of MOFs-derived carbon frameworks along with their electrochemical performance as cathode host in Li–S batteries are summarized and discussed.Qingping Wu Xuejun Zhou Jun Xu Fahai Cao Chilin Li 2019Journal of Energy Chemistry2019,28,11:7
7Discovery of low-mature hydrocarbon in manganese nodules and ooze from the Central Pacific deep sea floor显示文摘Extracts from manganese nodules and ooze from the Central Pacific deep sea floor were analyzed using the chromatogram-mass spectrum, and it was found that most of the biomarker molecules are of the low-mature type (some have characteristics of mature): the ratio of 'A'/C is high between 11.4%-19.75%; CPI is 1.22-1.23; C31-22S/ (22S+22R) hopane is 0.59-0.60, Tm/Ts is 0.99-1.99; pa moretane/(αβ+βα) hopane is 0.12-0.14; C29 sterane 20S/(20S+20R) is 0.35-0.41; ββ/(ββ+αα) is 0.38-0.45; arene TA(I)/TA(I+Ⅱ) is 0.16-0.21; methyl-phenanthrene index (MPI1) is 0.35-0.67. According to the geological settings of the sampling area and its organic geochemical characteristics, it is considered that the hydrothermal activities on the ocean floor facilitate the decomposition of organic matter in the sediment, which leads to the generation and migration of hydrocarbon into manganese nodules and ooze. This discovery is important for understanding the mechanisms of hydrocarbon generation in the ocean floor andHU Wenxuan JIN Zhijun YAO Suping LU Xiancai CHEN Zhilin ZHANG Linye ZHANG Xuejun ZHOU Huaiyang 2002Chinese Science Bulletin2002,47,11:7
8Cloning and functional characterization of Rht8,a“Green Revolution”replacement gene in wheat显示文摘Dear Editor,Wheat(Triticum aestivum)is a major staple crop in the world and provides~20%of the food calories for human consumption(Appels et al.,2018).During the 1960s and 1970s,the introduction of two semi-dwarfing genes Rht-B1b and Rht-D1b in wheat varieties strikingly improved lodging resistance and harvest index,and therefore substantially increased grain yield,resulting in the well-known'Green Revolution'(Peng et al.,1999).However,plants carrying Rht-B1b and Rht-D1b suffer from several drawbacks.Hongchun Xiong Chunyun Zhou Meiyu Fu Huijun Guo Yongdun Xie Linshu Zhao Jiayu Gu Shirong Zhao Yuping Ding Yuting Li Jiazi Zhang Ke Wang Xuejun Li Luxiang Liu 2022Molecular Plant2022,15,3:7
9Hydrogen-rich saline protects against ultraviolet B radiation injury in rats显示文摘Exposure of skin to solar ultraviolet(UV) radiation induces photo-damage.Ultraviolet B(UVB) is the major component of UV radiation which induces the production of reactive oxygen species(ROS) and plays an impor-tant role in photo-damage.Hydrogen gas reduces ROS and alleviates inflammation.In this study,we sought to demonstrate that hydrogen-rich saline has the effect on skin injuries caused by UVB radiation.UVB radiation was irradiated on female C57BL/6 rats to induce skin injury.Hydrogen-rich saline and nitrogen-rich saline were ad-ministered to rats by intraperitoneal injection.Skin damage was detected by microscope after injury.UVB radia-tion had a significant affection in tumor necrosis factor alpha,interleukin(IL)-1β and IL-6 levels,tissue superox-ide dismutase,malondialdehyde and nitric oxide activity.Hydrogen-rich saline had a protective effect by altering the levels of these markers and relieved morphological skin injury.Hydrogen-rich saline protected against UVB radiation injury,possibly by reducing inflammation and oxidative stress.Ze Guo Bingrong Zhou Wei Li Xuejun Sun Dan Luo 2012The Journal of Biomedical Research2012,26,5:6
10Palynological evidence sheds new light on the age of the Liuqu Conglomerates in Tibet and its geological significance显示文摘The Liuqu Conglomerates consist of a suit of terrestrial molasse deposits formed in a foreland basin of the Himalaya-Tibet orogenic belt before the collision of India and Eurasia.These deposits record considerable geological information regarding the late tectonic evolution of the Neotethyan ocean.The palynological study of interlayers of mudstone and mud-sandstones indicates an Oligocene age.The palynological assemblage consists mainly of deciduous broad-leaved angiosperms,with some coniferous gymnosperms and evergreen broad-leaved angiosperms.The deposits reflect a broad-leaved deciduous forest or mixed with conifer-broad-leaved forest ecotypes,showing a warm-temperate or temperate zone climatic environment.This work provides significant new information about the tectonic evolution,paleogeography,and paleoenvironment of southern Tibet during the Cenozoic.WEI LiJie LIU XiaoHan YAN FuHua MAI XueShun LI GuangWei LIU XiaoBing ZHOU XueJun 2011Science China Earth Sciences2011,54,6:5
11Nitrogen deposition and its ecological impact in China: An overview显示文摘Xuejun Liu Lei Duan Jiangming Mo Enzai Du Jianlin Shen Xiankai Lu Ying Zhang Xiaobing Zhou Chune He Fusuo Zhang 2010Environmental Pollution2010,,10:4
12Source models for the 2016 Mw6.0 Hutubi earthquake, Xinjiang,China: A possible reverse event显示文摘South and north-dipping nodal planes from the U.S. Geological Survey moment tensor solution were used to invert global teleseismic body waves to reveal the source rupture process of the December 8,2016, Mw6.0 Hutubi earthquake. The results show that a compact pattern is the main feature of this event for only one main slip zone located at the hypocenter for both models. The slip distributions are dominated by a nearly pure-thrust fault, and there is no apparent surface rupture. The inversion revealed that the slip zone extends 10 km along strike and 12 km along dip. The released total seismic moment was about 9.0 × 10^(17) Nm, corresponding to a magnitude of Mw6.0. It is difficult to solve for a best-fit rupture plane due to the sample slip pattern without obvious rupture directivity. This makes the farfield teleseismic data not sensitive enough to determine the fault geometric parameters. The source model of the reverse north-dipping plane fits well with the observed waveforms, and the results of the aftershock relocation outline a trend of north-dipping profiles, indicating the possibility of a reverse event. The inverted normal fault beneath the Qigu fold, interpreted by geological and seismic studies,may be the seismogenic fault for this reverse event.Gang Liu Xuejun Qiao Wei Xiong Yu Zhou Zhaosheng Nie Chuanjia Xia 2017Geodesy and Geodynamics2017,8,5:4
13Physiological levels of ATP negatively regulate proteasome function显示文摘由 ubiquitin-proteasome 系统的细胞内部的蛋白质降级是 ATP 依赖者,和最佳的 ATP 集中激活 proteasome 在 vitro 的功能是 ~ 100 渭 M。细胞内部的 ATP 层次在在这个范围以内的水平通常在低 millimolar 范围,而是 ATP 被显示在 vitro 禁止 proteasome peptidase 活动。这里,我们报导支持在生理的层次的细胞内部的 ATP 双向地调整的一个假设的新证据 26S proteasome 在房间的解朊的功能。首先,我们证实 ATP 在 vitro 在 26S proteasome 上施加了双向规定,与最佳的 ATP 集中(在 50 和 100 渭 M 之间) 刺激 proteasome 像糜蛋白酶的活动。第二,我们发现操作细胞内部的 ATP 层次也在有教养的房间在 proteasome 特定的蛋白质底层的层次导致了双向变化。最后,测量增加提高的细胞内部的 ATP,当减少的细胞内部的 ATP 稀释了导致房间死亡的 proteasome 抑制的能力时。这些数据强烈建议在生理的集中范围以内的内长的 ATP 能在 proteasome 活动施加否定影响,允许房间到很快,在应力下面的 ATP 减小上的 upregulate proteasome 活动调节。Hongbiao Huang Xiaoyan Zhang Shujue Li Ningning Liu Wen Elan Emily McDowell Ping Zhou Canguo Zhao Haiping Guo Change Zhang Changshan Yang Guangmei Wen Xiaoxian Dong Li Lu Ningfang Ma Weihua Dong Q Ping Dou Xuejun Wang Jinbao Liu 2010Cell Research2010,20,12:4
14Petroleum geological characteristics of Kela-2 gas field显示文摘The Kela-2 gas field is located in the center ofKelasu structural belt in Kuqa Depression. This trap is oneof a series of traps in the folded belts which are distributed ina string of pearls in the dual structure. The primary gas-bearing layers are sandstone of Lower Cretaceous K1bswhile the secondary layers are dolomite member and gluten-ite member of Lower Tertiary E1-2km and sandstone ofLower Cretaceous K1b. The main component of natural gasis methane whose content is higher than 97%. It is charac-terized by dry gas whose source rock is Jurassic coal meas-ure. The Kela-2 structural trap was formed during the Xiyuperiod and then became a reservoir in the late time. The res-ervoir formed late and the thick seal rock of Lower Tertiarygipsmantle are the avail reason why the giant Kela-2 gasfield has been well kept. The abnormal high pressure of theKela-2 gas field results from the strong structural compres-sion in the northern part during the Xiyu period.JIA Chengzao ZHOU Xinyuan WANG Zhaoming LI Qiming PI Xuejun CAI Zhenzhong HU Xiaoyong 2002Chinese Science Bulletin2002,47,S1:4
15Numerical simulation of channel pattern changes Part Ⅰ: Mathematical model显示文摘This paper presents a computational fluid dynamics model for simulation of twodimensional (2-D) water flow, sediment transport, bank failure processes, and the subsequent channel pattern changes. Effects of secondary currents at channel bends are included in the modified momentum conservation equation of water flow. An improved bank failure model is applied to calculate bank failure due to riverbed erosion, and to simulate lateral migration and planform changes of alluvial channels. The water flow model has been validated using laboratory measurements of flow in consecutive bends designed by the authors, in addition to flume test data from the literature.Hong WANG Gang ZHOU Xuejun SHAO 2010International Journal of Sediment Research2010,25,4:3
16Identification of Histoplasma causing an unexplained disease cluster in Matthews Ridge, Guyana显示文摘Here,we report the identification of Histoplasma causing an unexplained disease cluster in Matthews Ridge,Guyana.In March 2019,14 employees of Chongqing Bosai Mining Company,China,working in a manganese mining of Guyana,had unexplained fever,and two of them died.We obtained lung and brain tissues as well as the blood samples from the two deceased cases(patient No.1 and 2),and bronchoscopy lavages and cerebrospinal fluid samples from one severe case(patient No.3),respectively.All samples were tested by pathological examination,high-throughput sequencing,and real-time PCR.Pathological detection showed the presence of spore-like structures in the lung tissue of patient No.1,indicating a fungal infection in this patient.Nanopore sequencing identified the existing of H.capsulatum in the lung tissue sample within 13 h.Next-generation sequencing identified specific fragments of H.capsulatum in all of the samples tested(lung,brain and blood serum from the deceased cases,and plasma from the severe case).Real-time PCR assays did not reveal any viral infection related to transmission from bat feces.We conclude that H.capsulatum was the causative pathogen of this disease cluster based on epidemiologic,clinical,pathological and nucleic acid evidence.Ji Wang Weimin Zhou Hua Ling Xiaoping Dong Yi Zhang Jiandong Li Yong Zhang Jingdong Song William J.Liu Yang Li Ruiqing Zhang Wei Zhen Kun Cai Shuangli Zhu Dongyan Wang Jinbo Xiao Yigang Tong Wenli Liu Lihua Song Wei Wu Yang Liu Xiang Zhao Ruihuan Wang Sheng Ye Jing Wang Roujian Lu Baoying Huang Fei Ye Wenwen Lei Rongbao Gao Qi Shi Cao Chen Jun Han Wenbo Xu George F.Gao Xuejun Ma Guizhen Wu 2019Biosafety and Health2019,1,3:3
17A memristor-based architecture combining memory and image processing显示文摘Image processing is a type of memory-access-intensive application and is applied in many fields.Logic operations are very simple ones in image processing.During these operations,memory access takes a majority of the total time consumed,which puts a great pressure on memory access speed and bandwidth.However,in traditional von Neumann architecture,memory access is the inherent bottleneck of the system;that is,the speed of memory’s data supply is far lower than the data request of processor.Memristor is considered to be the fourth circuit element after resistor,capacitor and inductor.It has the capacity of both processing and memory,which supplies a new idea for solving the'memory wall'problem.In this paper,memristor is used to build an architecture combining computing and memory,where the memory has the ability to handle some simple image processing operations.This architecture can reduce readings and writings of memory effectively,which saves memory bandwidth thus improving the efficiency of the system.Logic operations of images are considered in this paper to validate the architecture.The experimental results and theoretical analysis indicate that the architecture can reduce memory access effectively.ZHOU Jing YANG XueJun WU JunJie ZHU Xuan FANG XuDong HUANG Da 2014Science China(Information Sciences)2014,57,5:3
18DNA methylation-based subclassification of psoriasis in the Chinese Han population显示文摘Psoriasis (Ps)is an inflammatory skin disease caused by genetic and environmental factors.Previous studies on DNA methylation (DNAm)found genetic markers that are closely associated with Ps,and evidence has shown that DNAm mediates genetic risk in Ps.In this study,Consensus Clustering was used to analyze DNAm data,and 114Ps patients were divided into three subclassifications.Investigation of the clinical characteristics and copy number variations (CNVs)of DEFB4,IL22,and LCE3C in the three subclassifications revealed no significant differences in gender ratio and in Ps area and severity index (PASI)score.The proportion of late-onset (≥40 years)Ps patients was significantly higher in type I than in types H and III (P =0.035).Type III contained the smallest proportion of smokers and the largest proportion of non-smoking Ps patients (P =0.086).The CNVs of DEFB4and LCE3C showed no significant differences but the CNV oflL22significantly differed among the three subelassifications (P =0.044).This study is the first to profile Ps subclassifications based on DNAm data in the Chinese Han population.These results are useful in the treatment and management of Ps from the molecular and genetic perspectives.Fusheng Zhou Changbing Shen Yi-Hsiang Hsu Jing Gao Jinfa Dou Randy KO Xiaodong Zheng Liangdan Sun Yong Cui Xuejun Zhang 2018Frontiers of Medicine2018,12,6:3
19A real-time abnormal operation pattern detection method for building energy systems based on association rule bases显示文摘Expert systems are effective for anomaly detection in building energy systems.However,it is usually inefficient to establish comprehensive rule bases manually for complex building energy systems.Association rule mining is available to accelerate the establishment of the rule bases due to its powerful capability of discovering rules from numerous data.This paper proposes a real-time abnormal operation pattern detection method towards building energy systems.It can benefit from both expert systems and association rule mining.Association rules are utilized to establish association rule bases of abnormal and normal operation patterns.The established rule bases are then utilized to develop an expert system for real-time detection of abnormal operation patterns.The proposed method is applied to an actual chiller plant for evaluating its performance.Results show that 15 types of known abnormal operation patterns and 11 types of unknown abnormal operation patterns are detected successfully by the proposed method.Chaobo Zhang Yang Zhao Yangze Zhou Xuejun Zhang Tingting Li 2022Building Simulation2022,15,1:3
20Incidence of Macrosomia in Rural Areas—Henan Province,China,2013–2017显示文摘Introduction:Macrosomia has short-term and long-term adverse health effects and is thus an important public health concern.Recent decades have witnessed increasing incidence of macrosomia in many countries.Methods:The present study used a large population-based birth cohort study to depict incidence of macrosomia among live births in rural areas of Henan Province of China from 2013 to 2017.Results:Among the 1,262,916 births,82,353 were cases of macrosomia.The overall incidence of all types of macrosomia,of macrosomia with birth weight<4,500 g,and of macrosomia with birth weight≥4,500 g were 6.52%,5.30%,and 1.22%,respectively.From 2013 to 2017,the incidence of macrosomia decreased by 31.3%from 7.96%in 2013 to 5.47%in 2017(X^(2)_(trend)=946.96,P_(trend)<0.001).Male infants and infants≥42 gestational weeks had significantly higher incidence of macrosomia than that of female infants and infants<42 gestational weeks(P<0.001).Conclusion:Gestational weight control through nutrition management and physical activities during pregnancy are needed to reduce incidence of macrosomia.Shiqi Lin Jian Chai Jiajia Li Xuejun Shang Lijun Pei Lifang Jiang Junxi Zhang Panpan Sun Wei Dong Yuhong Wang Dezhuan Zhou 2021China CDC weekly2021,3,37:3
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