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2022年山东省烟台市1起人间布鲁氏菌病聚集性疫情溯源分析

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中华地方病学杂志 2024年第5期43卷 345-349页

作者：于一帆李岩丁淑军寇增强史卫峰山东第一医科大学(山东省医学科学院)公共卫生与健康管理学院济南山东省疾病预防控制中心传染病防制所济南

目的探讨山东省烟台市1起人间布鲁氏菌病(简称布病)聚集性疫情的潜在传染源。方法收集2022年山东省烟台市1起人间布病聚集性疫情病例信息, 分离培养菌株并提取DNA, 采用BCSP31-PCR进行种属鉴定, AMOS-PCR进行种型鉴定。采用多位点可变... 详细信息

目的探讨山东省烟台市1起人间布鲁氏菌病(简称布病)聚集性疫情的潜在传染源。方法收集2022年山东省烟台市1起人间布病聚集性疫情病例信息, 分离培养菌株并提取DNA, 采用BCSP31-PCR进行种属鉴定, AMOS-PCR进行种型鉴定。采用多位点可变数目串联重复序列分析(MLVA)-16进行聚类分析, 并与公共数据库MLVAbank和2022年山东省布鲁氏菌监测数据进行比对分析。同时, 采用全基因组单核苷酸多态性(wgSNP)分型分析2022年山东省已完成全基因组测序的53株布鲁氏菌菌株, 构建wgSNP系统发育树。结果经BCSP31-PCR和AMOS-PCR鉴定, 2022年山东省烟台市布病聚集性疫情相关的3株菌株均为羊种布鲁氏菌生物型。MLVA-16分型结果显示, 3株分离菌株的MLVA-16分型完全一致, 16个串联重复序列位点为1-5-3-13-2-2-3-2-4-41-8-4-4-3-6-5, 属于东地中海分支。与MLVAbank进行比对检索, 有2株哈萨克斯坦分离菌株的MLVA-16分型与本次结果一致;与2022年山东省布鲁氏菌监测数据比对分析发现, 有11株分离菌株的MLVA-16分型与本次结果一致, 分别分离自枣庄、临沂、泰安、烟台、潍坊市。wgSNP分型结果显示, 11株布鲁氏菌菌株与本次分离菌株的距离小于7个单核苷酸多态性, 分别分离自泰安、淄博、临沂、滨州、济南、济宁、烟台和威海市。结论经2022年山东省烟台市1起人间布病聚集性疫情溯源, 临沂、泰安、烟台市分离羊种布鲁氏菌菌株的亲缘关系较近, 推测这些地区的羊只具有同源性。

关键词：布鲁氏菌病流行病学调查分子分型全基因组测序

山东省潍坊市农村居民耐碳青霉烯类阴沟肠杆菌耐药基因特征及核心基因组特征分析

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中华预防医学杂志 2024年第1期58卷 48-55页

作者：王安阁王爽刘璐孙高翔陈玉贞齐加新寇增强毕振旺山东第一医科大学(山东省医学科学院)附属省立医院医院感染管理办公室济南250021 山东省疾病预防控制中心传染病防制所济南250014

目的探究山东省潍坊市农村居民耐碳青霉烯类阴沟肠杆菌(CR-ECL)耐药基因特征及核心基因组特征。方法收集2017年山东省潍坊市农村社区居民粪便标本,使用耐碳青霉烯类肠杆菌显色培养基筛选耐药菌株,通过激光解吸/电离飞行时间质谱仪(MALDI... 详细信息

目的探究山东省潍坊市农村居民耐碳青霉烯类阴沟肠杆菌(CR-ECL)耐药基因特征及核心基因组特征。方法收集2017年山东省潍坊市农村社区居民粪便标本,使用耐碳青霉烯类肠杆菌显色培养基筛选耐药菌株,通过激光解吸/电离飞行时间质谱仪(MALDI-TOFMS)分析获得CR-ECL阳性菌株,针对CR-ECL分离株,采用微量肉汤稀释法进行抗生素敏感性试验获得CR-ECL耐药表型,开展全基因组测序(WGS)和分析、bla_(NDM)基因周围环境及菌株间系统进化分析。结果共获得并检测628份粪便标本,6份为CR-ECL阳性(检出率0.96%),均表现为多重耐药(MDR)表型。6株CR-ECL共有4个MLST分型(ST),均携带多种耐药基因(bla_(NDM-1)、bla_(NDM-5)等)和毒力基因(acrA、acrB、entB、fepC等),且bla_(NDM)基因周围遗传环境中均存在移动遗传元件ISAba125、TN3-IS3000、TN3及IS5。系统发育树显示,核心基因组多位点序列分型(core genome multilocus sequence typing,cgMLST)与单核苷酸多态性(SNPs)结果具有一致性,cgMLST结果显示菌株2BC0101B与2BC0251B,2BG0561B与2BI0221B之间等位基因差异分别为2和1,SNPs结果显示上述2对菌同样各自聚成一簇,并发现美国国立生物技术信息中心数据库(National Center for Biotechnology Information,NCBI)中鸡粪样本的菌株居于进化树中心,且本地序列均可追溯到美国人源序列。结论山东省潍坊市农村社区居民中已检出多重耐药碳青霉烯类阴沟肠杆菌。

关键词：基因组,细菌碳青霉烯类耐药阴沟肠杆菌

2009-2024年山东省甲型H1N1流感病毒血凝素基因进化分析

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中华微生物学和免疫学杂志 2024年第7期44卷 580-587页

作者：赵志红何玉洁吴巨龙宋绍霞孙林李忠王显军寇增强温红玲刘倜山东大学齐鲁医学院公共卫生学院微生物检验学系山东省"十四五"高等学校新发突发传染病防控与生物安全重点实验室济南250012 山东省疾病预防控制中心山东省预防医学研究院济南250014

目的描述并分析山东省A(H1N1)pdm09亚型流感病毒血凝素(hemagglutinin,HA)基因的多样性,探讨其遗传变异规律,为流感监测、疫情防控和疫苗株匹配度提供科学参考。方法从GISAID流感数据平台下载2009—2024年流感疫苗推荐株和各分支代表株... 详细信息

目的描述并分析山东省A(H1N1)pdm09亚型流感病毒血凝素(hemagglutinin,HA)基因的多样性,探讨其遗传变异规律,为流感监测、疫情防控和疫苗株匹配度提供科学参考。方法从GISAID流感数据平台下载2009—2024年流感疫苗推荐株和各分支代表株的HA基因序列,与山东省分离的298株甲型H1N1流感病毒株HA基因序列进行系统发育分析和氨基酸位点变异分析。利用IQ-TREE在线工具的最大似然法(maximum likelihood,ML)构建系统进化树,利用MegAlign软件查看氨基酸位点变异,同时采用NetNGlyc 1.0在线软件预测HA基因潜在的糖基化位点。结果298株山东省甲型H1N1流感病毒的HA基因同源性为91.2%~100.0%,序列进化分支随时间推移亲缘关系渐远,但进化方向与其他省份大致相同。HA基因氨基酸变异在各年度均有发生,抗原决定簇是其主要变异区域。结论山东省2009—2024年流感病毒分离株的HA基因仍处于不断进化过程,持续监测流感病毒流行趋势和进化方向对预警流感病毒大流行至关重要。

关键词：流感病毒A型,H1N1亚型血凝素基因遗传进化氨基酸变异

Epidemiological Characteristics of Human Rabies——Shandong Province,China,2010-2020

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China CDC weekly 2022年第35期4卷 793-797页

作者： Xiaomei Zhang Xueying Tian Bo Pang Zhiqiang Wang Wenji Zhai Xiaolin Jiang zengqiang kou Shujun Ding Xianjun Wang Shandong Provincial Key Laboratory of Communicable Disease Control and Prevention Department of Communicable Disease Control and PreventionShandong Center for Disease Control and PreventionJinanShandongChina

Introduction:Rabies is a viral zoonotic disease that causes progressive and fatal inflammation in the *** has caused more than 5,000 human deaths in Shandong Province since *** study aimed to analyze the epidemiological characteristics of human rabies in Shandong Province from 2010 to 2020 and to provide a scientific basis for policy ***:The data of reported human rabies cases from 2010 to 2020 were obtained from China’s National Notifiable Disease Reporting System,and data related to exposure and post-exposure prophylaxis(PEP)of the cases were acquired through case ***:A total of 414 human rabies cases were reported in Shandong Province from 2010 to *** of the 414 total cases,87.20%were primarily farmers;83.10%were over 40 years old.70.29%(265/377)belonged to categoryⅢexposure;and 96.67%(377/390)were exposed to the virus through infected *** vaccine inoculation rate of these cases after exposure was only 8.85%;1.03%(4/390)had been vaccinated with rabies immunoglobulin,developing the disease 11 to 13 days after categoryⅢ***:Dogs were still the primary animal *** rabies patients died due to no or inadequate post-exposure *** inoculation rates for dogs should reach the target of 70%as soon as *** departments should improve the accessibility and quality of PEP;and improve the health literacy of the elderly in rural areas.

关键词： Shandong category policy

一株GⅡ.12[P16]型诺如病毒毒株的全基因组序列分析

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中华实验和临床病毒学杂志 2024年第2期38卷 144-149页

作者：李美佳王国强郭明鑫刘晓林刘倜孙文魁傅忠燕寇增强山东第一医科大学(山东省医学科学院)公共卫生与健康管理学院济南250117 德州市疾病预防控制中心检验科德州253058 山东省疾病预防控制中心传染病防制所济南250014

目的对一株诺如病毒分离株SD20200267进行鉴定和全基因组序列分析,了解其结构特征。方法取患者标本进行病毒核酸的提取,对样本核酸进行扩增,将扩增产物进行测序,根据核苷酸序列进行基因分型。采用宏基因组测序技术进行全基因组测序,对... 详细信息

目的对一株诺如病毒分离株SD20200267进行鉴定和全基因组序列分析,了解其结构特征。方法取患者标本进行病毒核酸的提取,对样本核酸进行扩增,将扩增产物进行测序,根据核苷酸序列进行基因分型。采用宏基因组测序技术进行全基因组测序,对测序所得的核苷酸序列进行分析。结果获得SD20200267株病毒基因组全长,总长度为7465个核苷酸。SD20200267株在VP1区及RdRp区分别属于GⅡ.12和GⅡ.P16基因型。SD20200267株与其他GⅡ.12[P16]型毒株核苷酸一致性在96.0%~97.3%之间,有15个氨基酸位点变异。该毒株存在重组现象,重组位点位于ORF1与ORF2重叠区域。结论SD20200267株为GⅡ.12[P16]型毒株,ORF1与ORF2重叠区域存在重组现象。

关键词：诺如病毒基因组重组

Friction Characteristics Between Marine Clay and Construction Materials

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Journal of Ocean University of China 2024年第2期23卷 427-437页

作者： kou Hailei HUANG Jiaming CHENG Yang College of Engineering Ocean University of ChinaQingdao 266100China Fourth Division Organization Department of the CPC Qingdao Municipal CommitteeQingdao 266100China

Structure-soil interface friction characteristics is of importance to investigate the interaction between engineering structures and soils,especially for offshore *** interface friction behavior between marine clay and structural materials with different roughness was studied in this paper by using 3D optical scanning tests,a modified direct shear device and numerical *** between the surface roughness of structures,water content and interface friction angle were presented by model *** increase of water contents decreased the interface friction *** interfaces with different roughness,the interface friction angles will be smaller than that of the soil when the water content exceeds a certain *** roughness of the interface and the water content of the soil are mutually coupled to influence the coefficient of friction(COF).This paper proposed a Finite Element Method(FEM)to simulate the interface direct shear tests of structures with different *** surface models with different roughness are established based on the structure data obtained by 3D *** Coupled Eulerian-Lagrangian(CEL)approach was employed to analyse soils sheared by irregular *** interface behavior for interfaces with different roughness under cyclic shear stresses was analyzed by FEM.

关键词： marine clay construction material interface friction behavior surface roughness Finite Element Method

A modified smoothed particle hydrodynamics method considering residual stress for simulating failure and its application in layered rock mass

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Journal of Mountain Science 2024年第6期21卷 2091-2112页

作者： XIA Chengzhi SHI Zhenming kou Huanjia Department of Geotechnical Engineering College of Civil EngineeringTongji UniversityShanghai 200092China Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education Tongji UniversityShanghai 200092China

Residual strength is an indispensable factor in evaluating rock fracture,yet the current Smoothed Particle Hydrodynamics(SPH)framework rarely considers its influence when simulating *** improved cracking strategy considering residual stress in the base bond SPH method was proposed to simulate failures in layered rocks and slopes and verified by experimental results and other simulation methods(i.e.,the discrete element method).Modified Mohr–Coulomb failure criterion was applied to distinguish the mixed failure of tensile and *** fracture markψwas introduced to improve the kernel function after tensile damage,and the calculation of residual stress after the damage was derived after shear *** simulations were carried out to evaluate its performance under different stress and scale conditions and to verify its effectiveness in realistically reproducing crack initiation and propagation and coalescence,even fracture and *** results indicate that the improved cracking strategy precisely captures the fracture and failure pattern in layered rocks and rock *** residual stress of brittle tock is correctly captured by the improved SPH *** improved SPH method that considers residual strength shows an approximately 13%improvement in accuracy for the safety factor of anti-dip layered slopes compared to the method that does not consider residual strength,as validated against analytical *** infer that the improved SPH method is effective and shows promise for applications to continuous and discontinuous rock masses.

关键词： Smoothed particle hydrodynamics Cracking strategy Residual stress Layered rock Crack propagation

Spatial Heterogeneity of Embedded Water Consumption from the Perspective of Virtual Water Surplus and Deficit in the Yellow River Basin,China

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Chinese Geographical Science 2024年第2期34卷 311-326页

作者： MA Weijing LI Xiangjie kou Jingwen LI Chengyi College of Earth and Environmental Sciences Lanzhou UniversityLanzhou 730000China State Key Laboratory of Hydraulics and Mountain River Engineering College of Water Resource and HydropowerSichuan UniversityChengdu 610065China School of Economics and Management Ningxia UniversityYinchuan 750021China

Virtual water trade(VWT)provides a new perspective for alleviating water crisis and has thus attracted widespread ***,the heterogeneity of virtual water trade inside and outside the river basin and its influencing factors remains further *** this study,for better investigating the pattern and heterogeneity of virtual water trade inside and outside provincial regions along the Yellow River Basin in 2015 using the input-output model(MRIO),we proposed two new concepts,i.e.,virtual water surplus and virtual water deficit,and then used the Logarithmic Mean Divisia Index(LMDI)model to identify the inherent mechanism of the imbalance of virtual water trade between provincial regions along the Yellow River Basin and the other four regions in *** results show that:1)in provincial regions along the Yellow River Basin,the less developed the economy was,the larger the contribution of the agricultural sector in virtual water trade,while the smaller the contribution of the industrial sector.2)Due to the large output of agricultural products,the upstream and midstream provincial regions of the Yellow River Basin had a virtual water surplus,with a net outflow of virtual water of 2.7×10^(8) m^(3) and 0.9×10^(8) m^(3),respectively.3)provincial regions along the Yellow River Basin were in a virtual water deficit with the rest of China,and the decisive factor was the active degree of trade with the *** study would be beneficial to illuminate the trade-related water use issues in provincial regions along the Yellow River Basin,which has farreaching practical signific-ance for alleviating water scarcity.

关键词： virtual water trade(VWT) input-output model(MRIO) virtual water surplus virtual water deficit Yellow River Basin,China

Heterogeneous data-driven aerodynamic modeling based on physical feature embedding

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Chinese Journal of Aeronautics 2024年第3期37卷 1-6页

作者： Weiwei ZHANG Xuhao PENG Jiaqing kou Xu WANG School of Aeronautics Northwestern Polytechnical UniversityXi’an 710072China Institute of Aerodynamics RWTH Aachen UniversityAachen 52062Germany

Aerodynamic surrogate modeling mostly relies only on integrated loads data obtained from simulation or experiment,while neglecting and wasting the valuable distributed physical information on the *** make full use of both integrated and distributed loads,a modeling paradigm,called the heterogeneous data-driven aerodynamic modeling,is *** essential concept is to incorporate the physical information of distributed loads as additional constraints within the end-to-end aerodynamic *** heterogenous data,a novel and easily applicable physical feature embedding modeling framework is *** framework extracts lowdimensional physical features from pressure distribution and then effectively enhances the modeling of the integrated loads via feature *** proposed framework can be coupled with multiple feature extraction methods,and the well-performed generalization capabilities over different airfoils are verified through a transonic *** with traditional direct modeling,the proposed framework can reduce testing errors by almost 50%.Given the same prediction accuracy,it can save more than half of the training ***,the visualization analysis has revealed a significant correlation between the discovered low-dimensional physical features and the heterogeneous aerodynamic loads,which shows the interpretability and credibility of the superior performance offered by the proposed deep learning framework.

关键词： Transonic flow Data-driven modeling Feature embedding Heterogenous data Feature visualization