检索结果-南通市图书馆

Chinese Journal of Structural Chemistry 2005年第6期24卷 730-734页

作者： XUESi-Jia DUANLi-Ping KEShao-Yong lijing-zhi GUOYan-Ling DepartmentofChemistry ShanghaiNormalUniversityShanghai200234China CollegeofChemistryandPharmaceuticalSciences EastChinaUniversityofScienceandTechnologyShanghai200237China

The title compound 5,7-dimethoxy-(2,4-dichlorophenoxyacetylimino)-2H-1,2,4- thiadiazolo[2,3-a]pyrimidine has been synthesized. In order to investigate the relationship between the structure and herbicidal activity of the target compound, we report its crystal structure and herbi- cidal behavior in the present paper. Crystallographic data: C15H12N4O4Cl2S, Mr = 415.25, mono- clinic, space group P21/n, a = 10.7361(8), b = 11.9610(9), c = 13.0990(10) ?, β = 96.988(2)o, Z = 4, V = 1669.6(2) ?3, Dc = 1.652 g/cm3, F(000) = 848, R = 0.0394, wR = 0.0797 and μ(MoKα) = 0.545 mm-1.

关键词： crystal structure herbicidal activity 2H-1,2,4-thiadiazolo[2,3-a]pyrimidine 4,6-dimethoxyl-2-amino pyrimidine

在线全文

学校读者我要写书评

暂无评论

冠心病患者伴发负性情绪132例回顾性分析

广东医学 2019年第19期40卷 2748-2753页

作者：赖敏华李静芝陈凌申铁梅崔虹广东药科大学护理学院广东广州510310 广东省人民医院(广东省医学科学院)护理部广东广州510080

目的分析冠心病患者伴发负性情绪的现况及相关因素。方法由广东省人民医院的病案室通过电子病历系统检索符合诊断为"冠状动脉粥样硬化性心脏病"且"焦虑"、"冠状动脉粥样硬化性心脏病"且"抑郁"的患者信息,筛选的起止时间为2017年1-12月,... 详细信息

目的分析冠心病患者伴发负性情绪的现况及相关因素。方法由广东省人民医院的病案室通过电子病历系统检索符合诊断为"冠状动脉粥样硬化性心脏病"且"焦虑"、"冠状动脉粥样硬化性心脏病"且"抑郁"的患者信息,筛选的起止时间为2017年1-12月,最终从7 460例冠心病患者中筛选出132例符合入选和排除标准的冠心病伴发焦虑、抑郁的患者。结果冠心病患者负性情绪的临床检出率为1.77%。132例冠心病患者中,伴发焦虑和抑郁的男女比例基本持平,冠心病患者伴发负性情绪与患者的四肢功能、肌钙蛋白T、脑利钠肽相关(P<0.05)。结论冠心病患者的负性情绪的临床检出率较低。四肢功能、肌钙蛋白T和脑利钠肽是冠心病患者伴发不同负性情绪的相关因素,提示临床医护人员应关注冠心病患者的心身疾病的患病特点,有利于改善该群体伴发不同负性情绪的状况,并为临床治疗及护理提供参考依据。

关键词：冠心病焦虑抑郁

Effect of N-doping-derived solvent adsorption on electrochemical double layer structure and performance of porous carbon

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2023年第5期80卷 120-127,I0004页

作者： Zhe-Fan Wang Cheng Tang Qian Sun Ya-Lu Han zhi-Jian Wang lijing Xie Shou-Chun Zhang Fang-Yuan Su Cheng-Meng Chen CAS Key Laboratory of Carbon Materials Institute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001ShanxiChina University of Chinese Academy of Sciences Bejing 100049China Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBejing 100084Chind

N-doped porous carbon has been extensively investigated for broad electrochemical *** performance is significantly impacted by the electrochemical double layer(EDL),which is material dependent and hard to *** understanding of doping-derived EDL structure hinders insight into the structure-performance relations and the rational design of high-performance ***,we analyzed the mass and chemical composition variation of EDL within electrochemical operation by electrochemical quartz crystal microbalance,in-situ X-ray photoelectron spectroscopy,and time-offlight secondary ion mass *** found that N-doping triggers specifically adsorbed propylene carbonate solvent in the inner Helmholtz plane(IHP),which prevents ion rearrangement and enhances the migration of ***,this specific adsorption accelerated solvent decomposition,rendering rapid performance degradation in practical *** work reveals that the surface chemistry of electrodes can cause specific adsorption of solvents and change the EDL structure,which complements the classical EDL theory and provide guidance for practical applications.

关键词： Carbon materials Electrochemical double layer Electrochemical quartz crystal microbalance In-situ X-ray photoelectron spectroscopy N-doping

Molecular Cloning and Prokaryotic Expression of Non-Structural Protein NS1 Gene of Porcine Parvovirus

在线全文

学校读者我要写书评

暂无评论

Agricultural Sciences in China 2003年第10期2卷 1175-1178页

作者： WUDan TONGGuang-zhi QIUHua-ji XUEQiang ZHOUYan-jun lijing-peng NationalKeyLaboratoryofVeterinaryBiotechnology HarbinVeterinaryResearchInstituteHarbin150001P.R.China DepartmentofBiotechnology NortheastAgriculturalUniversityHarbin150030P.R.China

Porcine parvovirus (PPV) is one of the major agents causing swine reproductive failure. NS1 protein is a non-structural protein of PPV and can be used as a reagent for differentiation of vaccinated animals and infected ones. In present study, a recombinant plasmid pET28a/NS1 was constructed by cloning the coding sequence for NS1 of PPV into pET28a, a bacterial expression vector. The NS1 protein was expressed in E. coli BL21(DE3) after induced by IPTG and the recombinant fusion protein was purified with affinity chromatography. Expression amount of NS1 protein was improved by optimizing the inducing parameters. The recombinant NS1 protein is reactive to PPV positive sera in Western blot and ELISA test and therefore can be applicable in differential diagnosis of PPV infections.

关键词： Porcine parvovirus NS1 Diagnosis

Precise mode control of laser-written waveguides for broadband,low-dispersion 3D integrated optics

在线全文

学校读者我要写书评

暂无评论

Light(Science & Applications) 2024年第6期13卷 1186-1195页

作者： Yuying Wang lijing Zhong Kuen Yao Lau Xuhu Han Yi Yang Jiacheng Hu Sergei Firstov zhi Chen zhijun Ma Limin Tong Kin Seng Chiang Dezhi Tan Jianrong Qiu College of Optical Science and Engineering Zhejiang University310027HangzhouChina Institute of Light+X Science and Technology College of Information Science and EngineeringNingbo University315211NingboChina School of Optoelectronic Science and Engineering&Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University215006SuzhouChina Prokhorov General Physics Institute of the Russian Academy of Sciences Dianov Fiber Optics Research Center38 Vavilov str.Moscow119333Russia Zhejiang Lab 311121HangzhouChina College of Materials Science and Engineering Key Laboratory of Advanced Materials of Yunnan ProvinceKunming University of Science and Technology650093KunmingYunnanChina Department of Electrical Engineering City University of Hong Kong83 Tat Chee AvenueKowloonHong Kong SARChina School of Materials Science and Engineering Zhejiang University310027HangzhouChina

Three-dimensional(3D)glass chips are promising waveguide platforms for building hybrid 3D photonic circuits due to their 3D topological capabilities,large transparent windows,and low coupling *** present,the key challenge in scaling down a benchtop optical system to a glass chip is the lack of precise methods for controlling the mode field and optical coupling of 3D waveguide ***,we propose an overlap-controlled multi-scan(OCMS)method based on laser-direct lithography that allows customizing the refractive index profile of 3D waveguides with high spatial precision in a variety of *** the basis of this method,we achieve variable mode-field distribution,robust and broadband coupling,and thereby demonstrate dispersionless LP21-mode conversion of supercontinuum pulses with the largest deviation of<0.1 dB in coupling ratios on 210 nm *** approach provides a route to achieve ultra-broadband and low-dispersion coupling in 3D photonic circuits,with overwhelming advantages over conventional planar waveguide-optic platforms for on-chip transmission and manipulation of ultrashort laser pulses and broadband supercontinuum.

关键词： waveguide mode dispersion

Disciplinary development of global health academic degree programs in China

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Global Health Journal 2021年第2期5卷 102-111页

作者： Lixin Sun Duan Zhao Shangzhi Xiong Angela Renne zhi-Jie Zheng Hao Xiang Xiaokui Guo Kun Tang Yuantao Hao lijing L.Yan Global Health Research Center Duke Kunshan UniversityNo.8 Duke AvenueKunshanJiangsu 215316China School of Health and Related Research Regent CourtThe University of Sheffield30 Regent StreetSheffield SI 4DAUnited Kingdom School of Public Health Peking University38 Xueyuan RoadHaidian DistrictBeijing 100191China School of Health Sciences Wuhan UniversityNo.115 Donghn RoadWuchang DistrictWuhanHubei 430070China School of Global Health Chinese Center for Tropical Diseases ResearchShanghai Jiao Tong UniversityNo.227Chongqing South RoadShanghai 200025China Vanke School of Public Health Tsinghua UniversityZhangguancun North StreetHaidian DistrictBeijing 100084China School of Public Health Sun Yat-sen UniversityNo.74 Zhnngshan Second RoadGuangzhouGuangdong 510080China

This study aims to provide a brief overview of the history and development of global health education(GHE)as academic degree programs worldwide,and to identify GHE’s development opportunities and obstacles in *** is a state-of-the-art review of published and unpublished information that described and evaluated disciplinary development of global health degree programs worldwide,written in English,and published or shared between 1990 and *** were derived from official websites of leading global health institutions,like“Google Scholar”,“PubMed”,and unpublished information such as presentation files and unpublished manuscripts collected from knowledgeable leaders in the *** retrieved and reviewed a total of 35 articles and a large amount of unpublished information or sources on the *** Health emerged as a new discipline around the end of the last millennium and proliferated in the last two decades in developed nations,especially the United States and the United *** development of China’s GHE programs was built on China’s increasing engagement in global health affairs and *** 2012,Wuhan University established the first official global health department in *** universities such as Peking University and Duke Kunshan University subsequently set up departments or programs to offer undergraduate and postgraduate majors and *** first school-level global health unit was established in Shanghai in *** Consortium of Chinese Universities for Global Health(CCUGH)grew from 10 founding members in 2013 to 25 in *** desirable attributes“unique”to students majoring in global health include global-mindedness,health interests,compassion,intercultural sensitivity,and adventurous *** from GHE programs have a diverse set of career choices spanning research,government,not-for-profit,and private sector *** identified a number of strengths,weaknesses,opportunities,and threats to the future develo

关键词： Global health Education Academic degree Discipline China

Photonic lattice-like waveguides in glass directly written by femtosecond laser for on-chip mode conversion

在线全文

学校读者我要写书评

暂无评论

Chinese Optics Letters 2022年第3期20卷 57-61页

作者： Yuying Wang lijing Zhong zhi Chen Dezhi Tan Zaijin Fang Yi Yang Shengzhi Sun Luyun Yang jianrong Qiu Ningbo Femto&Nano Laser Technology Co. Ltd.Ningbo 315000China Zhejiang Lab Hangzhou 311100China Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications Institute of Photonics TechnologyJinan UniversityGuangzhou 511443China State Key Laboratory of Modern Optical Instrumentation College of Optical Science and EngineeringZhejiang UniversityHangzhou 310027China Laboratory of Infrared Materials and Devices The Research Institute of Advanced TechnologiesNingbo UniversityNingbo 315211China Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China

We report on a conceptually new type of waveguide in glass by femtosecond laser direct writing,namely,photonic latticelike waveguide(PLLW).The PLLWfs core consists of well-distributed and densified tracks with a sub-micron size of 0.62μm in ***,a PLLW inscribed as hexagonal-shape input with a ring-shape output side was implemented to converse Gaussian mode to doughnut-like mode,and high conversion efficiency was obtained with a low insertion loss of 1.65 dB at 976 *** work provides a new freedom for design and fabrication of the refractive index profile of waveguides with sub-micron resolution and broadens the functionalities and application scenarios of femtosecond laser direct-writing waveguides in future 3D integrated photonic systems.

关键词： femtosecond laser glass material laser direct-writing waveguide light mode conversion

改性粘土絮凝法对大西洋鲑(Salmo salar)存活及生理生化的影响初探

在线全文

学校读者我要写书评

暂无评论

海洋与湖沼 2019年第3期50卷 684-691页

作者：张培培宋秀贤李靖俞志明中国科学院海洋生态与环境科学重点实验室(中国科学院海洋研究所) 青岛266071 青岛海洋科学与技术试点国家实验室海洋生态与环境科学功能实验室青岛266071 中国科学院大学北京100049 中国科学院海洋大科学研究中心青岛266071

本文以平均体重为(388.00±41.11)g的大西洋鲑(Salmo salar)为实验对象,探究了改性粘土絮凝过程对养殖水体水质以及大西洋鲑存活、组织形态和氧化应激反应的影响。在本实验条件下,添加改性粘土的实验组水质得到一定程度的改善,其中磷酸... 详细信息

本文以平均体重为(388.00±41.11)g的大西洋鲑(Salmo salar)为实验对象,探究了改性粘土絮凝过程对养殖水体水质以及大西洋鲑存活、组织形态和氧化应激反应的影响。在本实验条件下,添加改性粘土的实验组水质得到一定程度的改善,其中磷酸盐、铵盐、亚硝酸盐浓度相较于对照组有明显降低的趋势(P0.05)。本研究结果说明,在远高于现场有效用量条件下,改性粘土未对大西洋鲑产生不良影响,该研究结果将为改性粘土治理有害藻华技术在国内外养殖海域的应用提供科学依据。

关键词：改性粘土大西洋鲑水质组织学观察生理生化

纤维增强复合材料约束钢管混凝土轴心受压柱抗爆性能分析

在线全文

学校读者我要写书评

暂无评论

工业建筑 2021年第1期51卷 179-186,193页

作者：刘兰王丽静郭宏程志中北大学土木工程系太原030051

为研究纤维增强复合材料(FRP)约束钢管混凝土轴心受压柱的抗爆性能,运用有限元软件ANSYS/LS-DYNA对16根轴心受压柱试件在爆炸荷载作用下的动力响应进行数值模拟分析,并采用参数化分析的方法研究轴压比、长细比、FRP粘贴方式及FRP种类对... 详细信息

为研究纤维增强复合材料(FRP)约束钢管混凝土轴心受压柱的抗爆性能,运用有限元软件ANSYS/LS-DYNA对16根轴心受压柱试件在爆炸荷载作用下的动力响应进行数值模拟分析,并采用参数化分析的方法研究轴压比、长细比、FRP粘贴方式及FRP种类对试件抗爆性能的影响。结果表明:轴压比不超过0.5时,轴压力的存在能提高试件的抗爆性能,而轴压比超过0.5以后,轴压力的存在会极大地削弱试件的抗爆性能;长细比越大,试件的跨中位移越大,抗爆性能越差;粘贴FRP能提高试件的抗爆性能,且采取合理的局部粘贴方式可达到与全柱粘贴相接近的约束效果;在其他参数不变的情况下,粘贴碳纤维增强复材比粘贴玻璃纤维增强复材更能有效提高试件的抗爆性能。

关键词：纤维增强复合材料钢管混凝土轴心受压柱爆炸荷载抗爆性能

在线全文

学校读者我要写书评

暂无评论

日照方言知庄章和精见端的读音类型

方言 2005年第3期27卷 219-226页

作者：岳立静北京语言大学语言研究所山东大学文学院济南250100

本文根据实地调查材料来讨论山东日照城乡24个方言点知庄章组和精见端组声母分布特点和读音类型,还讨论了知庄章组、见组、精组、端组等声母之间复杂的分合关系。

关键词：日照方言知庄章声母精见端声母读音类型地域差异分合关系知庄章读音方言日照