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136篇 您的检索式:作者名="Feng Lyu"
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1Internet of Vehicles in Big Data Era显示文摘As the rapid development of automotive telematics,modern vehicles are expected to be connected through heterogeneous radio access technologies and are able to exchange massive information with their surrounding environment. By significantly expanding the network scale and conducting both real-time and long-term information processing, the traditional Vehicular AdHoc Networks(VANETs) are evolving to the Internet of Vehicles(Io V), which promises efficient and intelligent prospect for the future transportation system. On the other hand, vehicles are not only consuming but also generating a huge amount and enormous types of data, which is referred to as Big Data. In this article, we first investigate the relationship between Io V and big data in vehicular environment, mainly on how Io V supports the transmission, storage, computing of the big data, and how Io V benefits from big data in terms of Io V characterization,performance evaluation and big data assisted communication protocol design. We then investigate the application of Io V big data in autonomous vehicles. Finally, the emerging issues of the big data enabled Io V are discussed.Wenchao Xu Haibo Zhou Nan Cheng Feng Lyu Weisen Shi Jiayin Chen Xuemin (Sherman) Shen 2018IEEE/CAA Journal of Automatica Sinica2018,5,1:19
2Nonlinear dynamic modeling of a helicopter planetary gear train for carrier plate crack fault diagnosis显示文摘Planetary gear train plays a significant role in a helicopter operation and its health is of great importance for the flight safety of the helicopter.This paper investigates the effects of a planet carrier plate crack on the dynamic characteristics of a planetary gear train,and thus finds an effective method to diagnose crack fault.A dynamic model is developed to analyze the torsional vibration of a planetary gear train with a cracked planet carrier plate.The model takes into consideration nonlinear factors such as the time-varying meshing stiffness,gear backlash and viscous damping.Investigation of the deformation of the cracked carrier plate under static stress is performed in order to simulate the dynamic effects of the planet carrier crack on the angular displacement of carrier posts.Validation shows good accuracy of the developed dynamic model in predicting dynamic characteristics of a planetary gear train.Fault features extracted from predictions of the model reveal the correspondence between vibration characteristic and the conditions(length and position)of a planet carrier crack clearly.Fan Lei Wang Shaoping Wang Xingjian Han Feng Lyu Huawei 2016Chinese Journal of Aeronautics2016,29,3:16
3Drug-Eluting Balloon versus New-Generation Drug-Eluting Stent for the Treatment of In-Stent Restenosis: An Updated Systematic Review and Meta-Analysis显示文摘Kong-Yong Cui Shu-Zheng Lyu Min Zhang Xian-Tao Song Fei Yuan Feng Xu 2018Chinese Medical Journal2018,,5:15
4Comparative study of minimally invasive versus open esophagectomy for esophageal cancer in a single cancer center显示文摘Mu Juwei Yuan Zuyang Zhang Baihua Li Ning Lyu Fang Mao Yousheng Xue Qi Gao Shugeng Zhao Jun Wang Dali Li Zhishan Gao Yushun Zhang Liangze Huang Jinfeng Shao Kang Feng Feiyue Zhao Liang Li Jian Cheng Guiyu Sun Kelin He Jie 2014Chinese Medical Journal2014,,4:13
5Inulin Can Alleviate Metabolism Disorders in ob/ob Mice by Partially Restoring Leptinrelated Pathways Mediated by Gut Microbiota显示文摘Inulin has been used as a prebiotic to alleviate glucose and lipid metabolism disorders in mice and humans by modulating the gut microbiota. However, the mechanism underlying the alleviation of metabolic disorders by inulin through interactions between the gut microbiota and host cells is unclear. We use ob/ob mice as a model to study the effect of inulin on the cecal microbiota by16 S rRNA gene amplicon sequencing and its interaction with host cells by transcriptomics. The inulin-supplemented diet improved glucose and lipid metabolism disorder parameters in ob/ob mice,alleviating fat accumulation and glucose intolerance. The a diversity of gut microbial community of ob/ob mice was reduced after inulin treatment, while the b diversity tended to return to the level of wild type mice. Interestingly, Prevotellaceae UCG 001(family Prevotellaceae) was obviously enriched after inulin treatment. A comparative analysis of the gene expression profile showed that the cecal transcriptome was changed in leptin gene deficiency mice, whereas the inulin-supplemented diet partially reversed the changes in leptin gene-related signaling pathways, especially AMPK signaling pathway, where the levels of gene expression became comparable to those in wild type mice.Further analysis indicated that Prevotellaceae UCG 001 was positively correlated with the AMPK signaling pathway, which was negatively correlated with markers of glycolipid metabolism disorders. Our results suggest that the inulin-supplemented diet alleviates glucose and lipid metabolism disorders by partially restoring leptin related pathways mediated by gut microbiota.Xiaofeng Song Liang Zhong Na Lyu Fei Liu Boxing Li Yanan Hao Yong Xue Jing Li Yuqing Feng Yue Ma Yongfei Hu Baoli Zhu 2019Genomics, Proteomics & Bioinformatics2019,17,1:12
6Effects of Crude Oil Contamination on Soil Physical and Chemical Properties in Momoge Wetland of China显示文摘Large oilfields are often coincidentally located in major river deltas and wetlands,and potentially damage the structure,function and ecosystem service values of wetlands during oil exploration.In the present study,the effects of crude oil contamination during oil exploration on soil physical and chemical properties were investigated in marshes of the Momoge National Nature Reserve in Jilin Province,China.The concentrations of total petroleum hydrocarbons in the marsh soil near the oil wells are significantly higher than those in the adjacent control marsh.Soil water contents in oil-contaminated marshes are negatively correlated with soil temperature and are significantly lower than those in the control area,especially in fall.Crude oil contamination significantly increases the soil pH up to8.0,and reduces available phosphorus concentrations in the soil.The concentrations of total organic carbon are significantly different among sampling sites.Therefore,crude oil contamination could potentially alkalinize marsh soils,adversely affect soil fertility and physical properties,and cause deterioration of the marshes in the Momoge National Nature Reserve.Phyto-remediation by planting Calamagrostis angustifolia has the potential to simultaneously restore and remediate the petroleum hydrocarbon-contaminated wetlands.Crude oil contamination affects the soil physical and chemical properties,so developing an effective restoration program in the Momoge wetland is neccesary.WANG Ying FENG Jiang LIN Qianxin LYU Xianguo WANG Xiaoyu WANG Guoping 2013Chinese Geographical Science2013,23,6:12
7First proof-of-principle experiment with the post-accelerated isotope separator on-line beam at BRIF:measurement of the angular distribution of ^(23)Na+^(40)Ca elastic scattering显示文摘The reaction dynamics of exotic nuclei near the drip line is one of the main research topics of current interest.Elastic scattering is a useful probe for investigating the size and surface diffuseness of exotic nuclei.The development of rare isotope accelerators offers opportunities for such studies.To date,many relevant measurements have been performed at accelerators using the projectile fragmentation technique,while the measurements at accelerators using isotope separator on-line(ISOL)systems are still quite scarce.In this work,we present the first proof-of-principle experiment with a post-accelerated ISOL beam at the Beijing Radioactive Ion Beam Facility(BRIF)by measuring the angular distribution of elastic scattering for the stable nucleus^(23)Na from the doubly magic nucleus^(40)Ca at energies above the Coulomb barrier.The angular distribution measured by a silicon strip detector array in a scattering chamber using the ISOL beam at BRIF is in good agreement with that measured by the high-precision Q3 D magnetic spectrograph using the nonISOL beam at nearly the same energy.This work provides useful background for making BRIF a powerful tool for the investigation of the reaction dynamics of exotic nuclei.Wei Nan Bing Guo Cheng-Jian Lin Lei Yang Dong-Xi Wang Yang-Ping Shen Bing Tang Bao-Qun Cui Tao Ge Yin-Long Lyu Hui-Ming Jia Yun-Ju Li Chen Chen Li-Hua Chen Qi-Wen Fan Xin-Yue Li Gang Lian Jian-Cheng Liu Tian-Peng Luo Nan-Ru Ma Rui-Gang Ma Xie Ma Ying-Jun Ma Wei-Ke Nan Dan-Yang Pang You-Bao Wang Pei-Wei Wen Feng Yang Yong-Jin Yao Sheng Zeng Hao Zhang Fu-Peng Zhong Shan-Hao Zhong Zhi-Hong Li Tian-Jue Zhang Wei-Ping Liu BRIF Collaboration 2021Nuclear Science and Techniques2021,32,5:9
8Trends in Antimicrobial Resistance against Enterobacteriaceae Strains Isolated from Blood: A 10-year Epidemiological Study in China's Mainland (2004-2014)显示文摘Xiang-Jun Liu Yuan Lyu Yun Li Feng Xue Jian Liu 2017Chinese Medical Journal2017,,17:8
9Field Simulation of Aerosol Transmission of SARS-CoV-2 in a Special Building Layout—Guangdong Province,China,2021显示文摘What is already known on this topic?Aerosol transmission was one route for the spread of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)and usually occurred in confined spaces.What is added by this report?Aerosol transmission was found to exist between handshake buildings,i.e.,buildings with extremely close proximity that formed relatively enclosed spaces.Transmission was mainly affected by the airflow layout caused by switching air conditioners on and off as well as opening and closing doors and windows.What are the implications for public health practice?Centralized isolation and home isolation in handshake buildings creates a risk of SARS-CoV-2 aerosol transmission under certain conditions.Attention should be paid to the influence of air distribution layout on aerosol diffusion in isolation wards,and disinfection of isolation venues should be strengthened.Zhuona Zhang Xia Li Qin Wang Jin Xu Qinqin Jiang Sili Jiang Jiayun Lyu Shiqiang Liu Ling Ye Jun Yuan Wenru Feng Dongqun Xu 2021China CDC weekly2021,3,34:8
10Long-term outcomes of staged recanalization for concurrent chronic total occlusion in patients with ST-segment elevation myocardial infarction after primary percutaneous coronary intervention显示文摘Background In patients with acute ST-segment elevation myocardial infarction(STEMI)who undergo primary percutaneous coronary intervention(PCI),approximately 10%are concomitant with a chronic total occlusion(CTO)in a non-culprit vessel.However,the impact of staged CTO recanalization on prognosis in this cohort remains disputable.This study aimed to compare the long-term outcomes of staged CTO recanalization versus medical therapy in patients with STEMI after primary PCI.Methods Between January 2005 and December 2016,a total of 287 patients were treated with staged CTO-PCI(n=91)or medical therapy(n=196)after primary PCI in our center.The primary endpoint was major adverse cardiovascular and cerebrovascular event(MACCE),defined as a composite of all-cause death,nonfatal myocardial infarction(MI),stroke or unplanned revascularization.After propensity-score matching,77 pairs of well-balanced patients were identified.Results The mean follow-up period was 6.06 years.Overall,the incidence of the primary endpoint of MACCE was significantly lower in staged CTO-PCI group than that in medical therapy group in both overall population(22.0%vs.46.9%;hazard ratio(HR)=0.48,95%CI:0.29-0.77)and propensity-matched cohorts(22.1%vs.42.9%;HR:0.48,95%CI:0.27-0.86).In addition,staged CTO-PCI was also associated with reduced risk of the composite of cardiac death,nonfatal MI or stroke compared with medical therapy in both overall population(9.9%vs.26.5%;hazard ratio(HR)=0.39,95%CI:0.19-0.79)and propensity-matched cohorts(9.1%vs.22.1%;HR:0.40,95%CI:0.16-0.96).After correction of the possible confounders,staged CTO-PCI was independently associated with reduced risks of MACCE(adjusted HR:0.46,95%CI:0.28-0.75),the composite of cardiac death,nonfatal MI or stroke(adjusted HR:0.45,95%CI:0.22-0.94)and all-cause mortality(adjusted HR:0.32,95%CI:0.13-0.83).Moreover,the results of sensitivity analysis were almost concordant with the overall analysis.Conclusions In patients with STEMI and a concurrent CTO who undergo primary PCI,successful staged recanalization of CTO in the non-culprit vessels is associated with better clinical outcomes during long-term follow-up.Kong-Yong CUI Fei YUAN Hong LIU Feng XU Min ZHANG Wei WANG Ming-Duo ZHANG Yun-Lu WANG Dong-Feng ZHANG Xiao ZHANG Jin-Fan TIAN Shu-Zheng LYU 2020Journal of Geriatric Cardiology2020,17,1:8
11sLe^(x) expression in invasive micropapillary breast carcinoma is associated with poor prognosis and can be combined with MUC1/EMA as a supplementary diagnostic indicator显示文摘Objective: Mucin 1(MUC1/EMA) and sialyl Lewis X(sLe^(x)) indicate polarity reversal in invasive micropapillary carcinoma(IMPC). The purpose of this study was to evaluate the expression of MUC1/EMA and sLe^(x) and to assess their diagnostic and prognostic value in patients with IMPC.Methods: The expression of sLe^(x) and MUC1/EMA in 100 patients with IMPC and a control group of 89 patients with invasive ductal carcinoma not otherwise specified(IDC-NOS) were analyzed with IHC. Fresh tumor tissues were collected from patients with IMPC or IDC-NOS for primary culture and immunofluorescence analysis.Results: The rate of nodal metastasis was higher in patients with IMPC than those with IDC-NOS, and IMPC cells tended to express more sLe^(x) and MUC1/EMA in the cytomembranes(the stroma-facing surfaces of the micropapillary clusters) than IDC-NOS cells. In IMPC, high cytomembrane expression of sLe^(x), but not MUC1/EMA, indicated poor prognosis. In addition, among the 100 patients with IMPC, 10 patients had sLe^(x)+/EMA-expression patterns, and 8 patients had sLe^(x)-/EMA+ expression patterns. The primary IMPC cells were suspended, non-adherent tumor cell clusters, whereas the primary IDC cells were adherent tumor cells. Immunofluorescence analysis showed that MUC1/EMA and sLe^(x) were co-expressed on the cytomembranes in IMPC cell clusters and in the cytoplasm in IDC-NOS cells.Conclusions: sLe^(x) can be used as a prognostic indicator and can be combined with MUC1/EMA as a complementary diagnostic indicator to avoid missed IMPC diagnosis.Yawen Song Hui Sun Kailiang Wu Jianke Lyu Jingyue Zhang Feng Gu Yongjie Ma Beibei Shen Chijuan Wang Xiaojiao Chen Jing Xu Weidong Li Fangfang Liu Li Fu 2021Cancer Biology & Medicine2021,18,2:7
12Prognosis of R1-resection at the bronchial stump in patients with non-small cell lung cancer显示文摘Lyu Jima Hao Xuezhi Hui Zhouguang Liang Jun Zhou Zongmei Feng Qinfu Xiao Zefen Chen Dongfu Zhang Hongxing Wang Lyuhua 2014Chinese Medical Journal2014,,16:6
13A Local Cluster of Omicron Variant COVID-19 Likely Caused by Internationally Mailed Document——Beijing Municipality,China,January 2022显示文摘On January 15,2022,a 26 years old female(Case A)went to a sampling site for coronavirus disease 2019(COVID-19)testing due to excessive fatigue and fever for two days.This patient preliminarily tested positive for severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)using a quantitative real-time reverse transcription polymerase chain reaction(qRT-PCR)method.Daitao Zhang Shuangsheng Wu Zhenyong Ren Ying Sun Xiangfeng Dou Zhaomin Feng Fu Li Yi Tian Shujuan Cui Baiwei Liu Bing Lyu Xiaoli Wang Feng Liu Lina Jin Chu Jiang Lina Tian Zhenjiang Xin Zhichao Liang Lei Jia Quanyi Wang Yang Pan Peng Yang 2022China CDC weekly2022,4,14:6
14Prognostic performance of interleukin-10 in patients with chest pain and mild to moderate coronary artery lesions an 8-year follow-up study显示文摘BackgroundInterleukin (IL )-10, IL-6 和他们的比率(IL-6/IL-10 ) 在得冠的动脉疾病的风险起一个重要作用,并且可以与它的结果相关。很少临床的试用在与胸 pain.MethodsA 介绍的病人在长期的心血管的事件上调查了这些因素的预示的影响未来的学习在胸疼痛地招收并且识别的 566 个病人上被执行对中等冠的动脉损害温和。IL-10, IL-6 和 IL-6/IL-10 是完成的 511 个病人全部的 measured.ResultsA 后续。中部的后续时间是 74 个月。Kaplan-Meier 分析与 IL-10 的在中部下面的层次在病人在后续时期期间表明了主要不利心脏的事件的发生的清楚的增加(P = 0.006 ) 并且 IL-6/IL-10 的在中部上面的层次(P = 0.012 ) 。比例的危险分析显示了的穆尔蒂瓦里伊特·考克斯是在为内在的 confounders.ConclusionsElevated IL-10 层次的调整以后的强壮的独立预言者的 IL-10 层次胸疼痛地在病人与更有利的长期的预后被联系并且对中等冠的动脉损害温和。IL-10 能被用于对长期的预后的早风险评价。Dong-Feng ZHANG Xian-Tao SONG Yun-Dai CHEN Fei YUAN Feng XU Min ZHANG Ming-Duo ZHAN Wei WANG Jing DAI Shu-Zheng LYU 2016Journal of Geriatric Cardiology2016,13,3:6
15A novel experience of deferential vessel-sparing microsurgical vasoepididymostomy显示文摘Microsurgical 纵的摄取 vasoepididymostomy (实时) 广泛地被用来对待 epididymal 妨碍的精子缺乏自从 2004。尽管恭敬 vasculature 在供应血到睾丸和 epididymis 起一个重要作用,注意对潜力被给予了的很少在吻合期间 sparing 有益于恭敬容器在实时。这研究试图在人现场评估恭敬容器圆材的功效和安全。从 2013 年 12 月到 2015 年 12 月,有 epididymal 阻塞的 69 个 azoospermic 人在孙中山大学的首先隶属于的医院里现场由于生殖器的感染,损伤,或自发的因素经历了恭敬容器圆材,广州,中国。这些病人的结果回顾地被分析。吝啬的年龄为他们的搭挡是为人和 28.3 年的 31.1 年。59 (85.5% , 59/69 ) 人们被跟随在上面在为约 16 个月的外科以后。明显被精液分析注意并且证实(> 10 000 sperm/ml ) 在 83.1%(49/59 ) 人。自然怀孕率是 40.7%(24/59 ) 在学习底,(21/24 ) 与 87.5% ,这些,自然怀孕在外科以后在 12 以内完成了月。没有严重不利事件或复杂并发症被观察。在这研究,我们在场为 sparing 的一种新奇技术恭敬容器在期间生活。初步的结果显示这种技术与有利明显和怀孕率安全。Kun-Long Lyu Jin-Tao Zhuang Philip S Li Yong Gao Liang Zhao Ya-Dong Zhang Ming-Kuan Zhou Jing-Wei Yu Xin Feng Xiang-Zhou Sun Chun-Hua Deng Xiang-An Tu 2018Asian Journal of Andrology2018,20,6:6
16Effect of Weight Loss on Survival in Esophageal Cancer Patients undergoing Neoadjuvant Chemoradiotherapy and Surgery显示文摘Objective This study aimed to determine the impact of weight loss during neoadjuvant chemoradiotherapy on the survival of patients with esophageal carcinoma.Methods We retrospectively examined 102 consecutive patients with esophageal carcinoma who underwent neoadjuvant chemoradiotherapy followed by radical resection at Sichuan Cancer Hospital&Institute between 2003 and 2017.The patients were divided into three groups based on the amount of body weight lost during neoadjuvant chemoradiotherapy:severe weight loss(>10%),high weight loss(5%~10%),and low weight loss(<5%).The correlations of weight loss with toxicity,progressionfree survival,and overall survival were investigated.Results The median overall survival was 49.7 months in the low weight loss group compared with 35.4 and 25.1 months in the high and severe weight loss groups(P=0.041).The 1-year overall survival rates in the severe,high,and low weight loss groups were 62.5%,85.0%,and 90.7%,respectively;the corresponding 3-year overall survival rates were 21.9%,47.3%,and 68.8%,respectively,and the corresponding 5-year overall survival rates were 21.9%,31.0%,and 44.4%,respectively.The multivariate analysis indicated that a pathological complete response and severe weight loss were independent prognostic factors for overall survival.Any leukopenia(P=0.024),leukopenia of at least grade 3(P=0.021),and anemia(P=0.042)occurred more frequently in the severe weight loss group.Conclusions Weight loss during neoadjuvant CRT is an independent and adverse prognostic factor in esophageal carcinoma patients,whereas a stable weight confers a better prognosis.Jia Hua Lyu Tao Li Yong Tao Han Lei Wu Lin Peng Qi Feng Wang Long Liang 2020Journal of Nutritional Oncology2020,5,3:6
17Analysis of potential factors contributing to refusal of invasive strategy after ST-segment elevation myocardial infarction in China显示文摘Background:Reduced application of percutaneous coronary intervention(PCI)is associated with higher mortality rates after STsegment elevation myocardial infarction(STEMI).We aimed to evaluate potential factors contributing to the refusal of PCI in STEMI patients in China.Methods:We studied 957 patients diagnosed with STEMI in the emergency departments(EDs)of six public hospitals in China.The differences in baseline characteristics and 30-day outcome were investigated between patients who refused PCI and those who underwent PCI.Multivariable logistic regression was used to evaluate the potential factors associated with refusing PCI.Results:The potential factors contributing to refusing PCI were older than 65 years(odds ratio[OR]2.66,95%confidence interval[Cl]1.56-4.52,P<0.001),low body mass index(BMI)(OR 0.91,95%Cl 0.84-0.98,P=0.013),not being married(OR 0.29,95%Cl 0.17-0.49,P<0.001),history of myocardial infarction(MI)(OR 2.59,95%Cl 1.33-5.04,P=0.005),higher heart rate(HR)(OR 1.02,95%Cl 1.01-1.03,P=0.002),cardiac shock in the ED(OR 5.03,95%Cl 1.48-17.08,P=0.010),pre-hospital delay(>12 h)(OR 3.31,95%Cl 1.83-6.02,P<0.001)and not being hospitalized in a tertiary hospital(OR 0.45,95%Cl 0.27-0.75,P=0.002).Compared to men,women were older,were less often married,had a lower BMI and were less often hospitalized in tertiary hospitals.Conclusions:Patients who were older,had lower economic or social status,and had poorer health status were more likely to refuse PCI after STEMI.There was a sex difference in the potential predictors of refusing PCI.Targeted efforts should be made to improve the acceptance of PCI among patients with STEMI in China.He Zhang Wen Zheng Shuo Wu Jing-Jing Ma Guang-Mei Wang Yong Li Jia-Qi Zheng Yuan Lyu Meng-Yang Xue Feng Xu Jia-Li Wang Yu-Guo Ghen 2021Chinese Medical Journal2021,,5:6
186G service-oriented space-air-ground integrated network: A survey显示文摘As an indispensable component of the emerging 6G networks,Space-Air-Ground Inte-grated Networks(SAGINs)are envisioned to provide ubiquitous network connectivity and services by integrating satellite networks,aerial networks,and terrestrial networks.In 6G SAGINs,a wide variety of network services with the features of diverse requirements,complex mobility,and multi-dimensional resources will pose great challenges to service provisioning,which urges the develop-ment of service-oriented SAGINs.In this paper,we conduct a comprehensive review of 6G SAGINs from a new perspective of service-oriented network.First,we present the requirements of service-oriented networks,and then propose a service-oriented SAGINs management architec-ture.Two categories of critical technologies are presented and discussed,i.e.,heterogeneous resource orchestration technologies and the cloud-edge synergy technologies,which facilitate the interoperability of different network segments and cooperatively orchestrate heterogeneous resources across different domains,according to the service features and requirements.In addition,the potential future research directions are also presented and discussed.Nan CHENG Jingchao HE Zhisheng YIN Conghao ZHOU Huaqing WU Feng LYU Haibo ZHOU Xuemin SHEN 2022Chinese Journal of Aeronautics2022,35,9:6
19The Content of Statistical Requirements for Authors in Biomedical Research Journals显示文摘Tian-Yi Liu Si-Yu Cai Xiao-Lu Hie Ya-Qi Lyu Xiao-Xia Peng Guo-Shuang Feng 2016Chinese Medical Journal2016,,20:5
20Rapid Assessment on Potential Risks of Schistosomiasis Transmission—7 PLADs,China,2019 and 2021显示文摘Summary What is already known about this topic?Oncomelania hupensis(O.hupensis)and livestock are main infection sources of schistosomiasis.The schistosome infected O.hupensis and livestock’s feces are important risk factors in the transmission of schistosomiasis.What is added by this report?The potential risks of schistosomiasis transmission remain prevalent,giving an early warning to local government with information on existing transmission risks.It is expected that the effectiveness and efficiency of schistosomiasis surveillance could be improved by conducting rapid risk assessment at the beginning of transmission season.Junyi He Hongqing Zhu Ziping Bao Lijuan Zhang Yinlong Li Ting Feng Suying Guo Wangping Deng Can Wang Hui Dang Tiewu Jia Chao Lyu Zhiqiang Qin Chunli Cao Jing Xu Shizhu Li Xiaonong Zhou 2021China CDC weekly2021,3,51:5
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