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Prevalence and Genomic Characterization of Multidrug-Resistant Salmonella enterica Serovar Kentucky Sequence Type 198 Circulating — Beijing Municipality, China, 2016–2023

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China CDC weekly 2024年第33期6卷 825-833页

作者： mei qu Ying Huang Bing Lyu Xin Zhang Yi Tian Zhaomin Feng Zhiyong Gao Daitao Zhang Beijing Key Laboratory of Diagnostic and Traceability Technologies for Food Poisoning Beijing Center for Disease Prevention and ControlBeijingChina

Introduction Highly fluoroquinolone-resistant Salmonella enterica serovar Kentucky(***)of sequence type(ST)198 has emerged as a global multidrug-resistant(MDR)clone,posing a threat to public *** Whole genome sequencing and antibiotic susceptibility testing was used to characterize the population structure and evolutionary history of 54 *** isolates recovered from food and human clinical cases in Beijing from 2016 to *** All 54 *** ST198 isolates exhibited resistance to quinolones,carrying point mutations in the quinolone resistance-determining regions(gyrA_S83F and parC_S80I).Resistance to other antibiotics(folate pathway inhibitors,cephems,aminoglycosides,phenicols,rifamycin,fosfomycin,macrolides,and tetracyclines),mediated by the sul1,sul2,dfrA14,blaCTX-M,blaTEM-1B,aac(3)-Id,aadA2,aadA7,aph(3')-I,aph(3'')-Ib,rmtB,floR,arr-2,fosA,mph(A),and tet(A)genes,was also observed in different *** Beijing *** ST198 evolutionary tree was divided into clades 198.2-1 and 198.2-2,which were further differentiated into three subclades:198.2-2A,198.2-2B,and *** with the extended-spectrumβ-lactamase-encoding gene blaCTX-M-14b in 198.2-1,the co-existence of blaCTX-M-55 and blaTEM-1B,as well as chromosomally located qnrS1,was detected in most 198.2-2 isolates,which showed more complex MDR *** ST198 outbreak isolates derived from two predominant clonal sources:198.2-1 with cgST236434 and 198.2-2A with *** The *** population in Beijing is genetically diverse,consisting of multiple co-circulating lineages that have persisted since *** surveillance of food and humans will aid in implementing measures to prevent and control the spread of AMR.

关键词： Kentucky predominant Whole

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县域经济高质量发展视域下推动工业企业管理升级的路径选择——以莱州市为例

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烟台职业学院学报 2024年第02期19卷 7-11页

作者：曲美彩中共莱州市委党校

推动工业企业管理升级，是推动经济高质量发展的基础和前提。莱州市针对县域工业企业普遍存在的问题，紧紧抓住企业管理升级这一重要突破口，通过政府扶持引导、专家全程陪伴等系列措施，有效带动区域工业企业管理升级。总结这一有益经... 详细信息

推动工业企业管理升级，是推动经济高质量发展的基础和前提。莱州市针对县域工业企业普遍存在的问题，紧紧抓住企业管理升级这一重要突破口，通过政府扶持引导、专家全程陪伴等系列措施，有效带动区域工业企业管理升级。总结这一有益经验，要充分发挥政府主导作用，为县域工业企业管理升级创造良好的环境条件；实行梯次培育工程，发挥“样板企业”的示范带动效应；推动企业管理人才队伍建设，打造核心竞争优势；推进产学研深度融合，推动企业管理升级。

关键词：县域经济高质量发展工业企业管理升级

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加味甘麦大枣汤治疗失眠症验案举隅

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中国民间疗法 2024年第16期32卷 94-97页

作者：段培瞿梅上海市浦东新区芦潮港社区卫生服务中心上海201306 上海市浦东新区光明中医医院上海201399

该文介绍瞿梅副主任医师运用加味甘麦大枣汤治疗失眠症的相关临床验案,并分析失眠的病因病机,阐述甘麦大枣汤的方义、功用及应用。瞿梅副主任医师认为,加味甘麦大枣汤适用于治疗失眠症证属心阴不足、心肝失调者。

关键词：加味甘麦大枣汤失眠症不寐心阴不足心肝失调

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The Idea of an International University Reshaped by Students:An Ethnographic Study in a Chinese University

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Frontiers of Education in China 2018年第3期13卷 375-400页

作者： qu mei School of Social Sciences Tsinghua UniversityBeijing 100084China Center for China and Globalization Beijing 100004China

This paper presents how students reshaped the idea of an international university offered to *** findings derive from participant observation ethnographic fieldwork carried out at Fudan University in *** analysis proves that the idea of an“international university”offered to Fudan University students was double-edged in the sense that it both cultivated and screened international *** reshaped their university by manipulating or“twisting”the screening process when applying for short-term study abroad programs,on the one hand,and creating cultivating“devices”within the university,namely student-initiated associations on the other *** findings of this paper add a new aspect to the idea of the“international university”from students’perspective and turn the spotlight on students as active builders of their university.

关键词： international university international talent student studying abroad student association

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Invasion genetics of alien insect pests in China: Research progress and future prospects

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Journal of Integrative Agriculture 2019年第4期18卷 748-757页

作者： CHU Dong qu Wan-mei GUO Lei Key Lab of Integrated Crop Pest Management of Shandong Province/College of Plant Health and Medicine Qingdao Agricultural University

An unwelcome side effect of the globalization of the world's economy and dramatic increase in human mobility and trade has been a marked increase in species invasions that have posed severe threats to the ecological, economic, and/or social stability of the introduced regions. In this review, we analyzed the application of molecular markers in invasion genetics of invasive alien insect pests(IAIPs) in China based on a bibliometric survey. Our report discusses the considerable progress that has been made during the past two decades in understanding the invasion genetics of IAIPs in China. We reviewed the major findings in the main topics including the effects of origin and routes of invasion on genetic structure, spatial and temporal genetic changes, factors contributing to the genetic changes of IAIPs, and genetic mechanisms involved in IAIPs' invasions. On the other hand, some of these research areas remain relatively unexplored in China, especially those pertaining to spatial and temporal genetic changes of IAIPs and genetic mechanisms of IAIPs' invasions. Finally, the future research prospects of IAIPs in China are discussed. We hope this review will stimulate an interest in and provide an increased understanding of the field of invasion genetics of IAIPs in China, and provide a basis for future research in this area.

关键词： biological invasion invasive alien insect pests(IAIPs) China invasion genetics genetic variation

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Tunable Nonlinear Optical Property and Photocatalytic Activity on Luminescent Chiral Lanthanide Chains

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中国化学:英文版 2014年第12期32卷 1259-1266页

作者： mei qu Minmin Liu Jiang Liu Xianming Zhang School of Chemistry&Material Science Shanxi Normal UniversityLinfenShanxi 041004China

Five chiral(P2_(1))isostructural lanthanide coordination complexes Ln(pic)_(3)[pic=picolinic acid,Ln=La(1),Gd(2),Nd(3),Sm(4)and Eu(5)]have been hydrothermally generated,featuring one dimensional right-handed 2_(1)helical chains constructed from LnN_(3)O_(6)of square antiprism geometry and N,O-chelated pic−groups,in which 3,4 and 5 have been reported,but we explore undiscovered properties of their own *** special,1 undergoes an abnormal transformation of symmetry as the temperature cooling to 100 ***-DSC studies demonstrated that all isologues have good thermal stability with the decomposition temperature up to 400℃.Then,UV-Vis-NIR transmission spectroscopy measurements indicated that they possess a short-wavelength absorption edge onset at 377 nm,corresponding to the optical band gap of 3.29 ***,powder second harmonic generation(SHG)measurements revealed that the SHG intensity of 1,2,4 and 5 may be about 1.2,2.0,0.9 and 0.75 times that of KH_(2)PO_(4),***,1 and 3 exhibit efficient photocatalytic degradation for MB(Methylene Blue)upon UV-light ***,both 1 and 2 show strong blue luminescence.

关键词： lanthanides nonlinear optics degradation luminescence

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聚乙酸乙烯酯包覆对碳纳米材料分散性能的影响

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塑料科技 2024年第3期52卷 27-32页

作者：赵巍蒋益豪曲美洁宾月珍郭艳秋中石化(大连)石油化工研究院有限公司辽宁大连116045 大连理工大学化工学院高分子材料系辽宁大连116024

为提高碳纳米材料在极性/非极性溶液和聚合物基体中的分散性和相容性,以乙酸乙烯酯为单体,采用自由基聚合的方法,对碳纳米管和石墨烯两种碳材料进行包覆改性。采用红外光谱、热重分析、扫描电子显微镜和拉曼光谱表征了包覆碳材料的效果... 详细信息

为提高碳纳米材料在极性/非极性溶液和聚合物基体中的分散性和相容性,以乙酸乙烯酯为单体,采用自由基聚合的方法,对碳纳米管和石墨烯两种碳材料进行包覆改性。采用红外光谱、热重分析、扫描电子显微镜和拉曼光谱表征了包覆碳材料的效果。经红外光谱表征,包覆后的碳纳米材料出现了乙酸乙烯酯的特征吸收峰,热重曲线中170~240℃出现明显的失重,从拉曼光谱中可以看出,改性后的碳纳米管和石墨烯的ID/IG分别从1.730和1.040降低至1.090和0.985,表明石墨化程度增加,说明了乙酸乙烯酯改性碳纳米材料成功。通过紫外光谱测试表征了包覆后碳材料的分散性和稳定性,发现包覆后的碳纳米材料具有优异的分散性和稳定性。因此,原位聚合得到的聚乙酸乙烯酯成功包覆到了碳材料表面,包覆过程没有对碳纳米材料本身结构规整性造成破坏,保证了碳纳米材料原有的性能不受影响。当乙酸乙烯酯与碳材料的质量比为1∶1和2∶1时,聚乙酸乙烯酯包覆碳纳米材料的效果较好,且改性后的碳纳米材料具有优异的分散性和稳定性。

关键词：自由基聚合聚乙酸乙烯酯碳纳米管石墨烯分散性

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Simple model for predicting hourly air temperatures inside Chinese solar greenhouses

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International Journal of Agricultural and Biological Engineering 2023年第5期16卷 56-60页

作者： Qiaoxue Dong Jiechang Liu mei qu Key Laboratory of Agricultural Information Acquisition Technology(Beijing) Ministry of AgricultureChina Agricultural UniversityBeijing 100083China College of Horticulture China Agricultural University/Beijing Key Laboratory of Growth and Development Regulation for Protected Vegetable CropsBeijing 100193China

For an efficient energy greenhouse,temperature is the most important climate parameter,which not only affects crop growth and health but also determines the management of energy *** reliable monitoring of temperature is of great significance,and often hourly values are ***,due to the low level of automation for Chinese solar greenhouse,the loss or poor quality of climate data often *** order to accurately supplement the missing data,as well as for the generation of future temperature,a 24-hour indoor temperature prediction model was *** uses a piecewise Bezier curve equation that takes the characteristic temperature as the control point which was determined by the outside weather *** 130 d of observed hourly temperature data were used to build and validate the model,and the results showed that the temperature model proposed was accurate and sufficient for the simulation of the trend curve of hourly temperature change inside a solar greenhouse.(EF=0.98,R2=0.89).After validation,this temperature model proposed can be useful for the quantitative analysis of crop growth and optimal management.

关键词： solar greenhouse hourly temperature prediction model Bezier curve equation

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Expressions of cellular retinoic acid binding proteins I and retinoic acid receptor-β in the guinea pig eyes with experimental myopia

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International Journal of Ophthalmology(English edition) 2011年第2期4卷 131-136页

作者： Jia Huang Xiao-mei qu and Ren-Yuan Chu Department of Ophthalmology Eye and ENT Hospital Affiliated to Fudan University Shanghai 200031 China

·AIM:All-trans retinoic acid (RA) is the only extrinsic biochemical candidate known to date that could act as a growth controller,the aim of this study was to investigate the expression cellular retinoic acid binding proteins I (CRABP-I) and retinoic acid receptor-β (RAR-β) in retina of the guinea pig eyes with experimental myopia.·METHODS:Ninety guinea pigs aged 14 days were equally and randomly divided into three groups:form deprivation (FD),-5D lens,and *** diffusers for FD were white translucent hemispheres,and-5D lenses were used to introduce hyperopic *** was measured with streak retinoscopy after cycloplegia,and axial length was calculated with Cinescan A/B *** harvested at different time points were used to measure RA level with HPLC and expressions of cellular retinoic acid binding proteins I (CRABP-I) and RA receptor-β (RAR-β) were assayed with Western blot and Real-time ***13.0 software was used for statistical analysis.·RESULTS:Up-regulations of CRABP-I and RAR-β in ocular tissues correlated with changes in the refractive status and growth rate of the guinea pig eye (P <0.05).14 days of monocular form-deprivation led to-5.14D myopia and a 0.281mm axial elongation;14 days of monocular defocus produced-3.64D myopia and a 0.163 mm axial *** level of retinal RA started to elevate in 7 days (P <0.05) after visual manipulation in both FD and-5D lens groups and became more prominent by 14 days (P <0.01).The expressions of CRABP-I and RAR-β increased by 14 days after visual manipulation (P <0.05),the mRNA level of RAR-β,however,increased by 7 days after visual manipulation (P <0.05),which suggested that changes of expressions of CRABP-I and RAR-β might lag behind the change of RA.·CONCLUSION:The levels of CRABP-I and RAR-β were elevated in retina of the guinea pig eye with experimental *** the progression of experimental myopia,the retinal RA level increased rapidly,and there might be a positive

关键词： retinoic acid CRABP-I RAR-β experimental myopia guinea pig

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Extended Group of the Subgroup Gr in Linear Group Over the Principal Ideal Ring

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Chinese quarterly Journal of Mathematics 2008年第4期23卷 600-605页

作者： WEI Zong-li qu He-mei Department of Mathematics Luoyang Teacher＇s College Luoyang 471022 China Department of Mathematics Huanghuai College Zhumadian 463000 China

Suppose R is a principal ideal ring, R^＊ is a multiplicative group which is composed of all reversible elements in R, and Mn（R）, GL（n,R）, SL（n,R） are denoted by,Mn（R）={A=（aij）n×n｜aij∈R,i,j=1,2…,n},GL（n,R）={g｜g∈Mn（R）,det g∈R^＊},SL（n,R）={g∈GL（n,R）｜det g=1},SL（n,R）≤G≤GL（n,R）（n≥3）,respectively,then basing on these facts, this paper mainly focus on discussing all extended groups of Gr={（O D^A B）∈G｜A∈GL（r,R）,（1≤r〈n）}in G when R is a principal ideal ring.

关键词： principal ideal ring extended group linear group

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