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CREATIVE DESIGN BASED ON KNOWLEDGE MANAGEMENT IN ENGINEERING DESIGN

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Chinese Journal of Mechanical Engineering 2007年第5期20卷 101-105页

作者： liang Jun JIANG Zuhua ZHEN lu SU hai WANG Kuoming School of Mechanical Engineering Shanghai Jiaotong University Shanghai 200240 China nstitute of Technology Management Tsing Hua University Hsinchu 30013 Taiwan China

To support and serve engineering design, creative design based on knowledge management is proposed. The key knowledge factors of creative design are analyzed and discussed, and knowledge extraction tools are utilized to distill the important knowledge to serve for knowledge resource of creative design. The implementation of creative design mode is described and executed, which can promote the intelligent asset of the enterprise and shorten the period of creative design. With this study, design afflatus and conceptual design can be achieved expediently and effectively.

关键词： Creative design Engineering design Knowledge management Knowledge sharing

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X波段二维综合孔径微波辐射计试验系统研究

空间电子技术 2017年第4期14卷 33-38页

作者：王佳坤陈文新李一楠卢海梁中国空间技术研究院西安分院西安710000

对中国空间技术研究院西安分院研制的X波段二维综合孔径微波辐射计的试验系统进行了研究。首先介绍了国内外综合孔径微波辐射计样机的发展概况,并阐述了综合孔径微波辐射系统的基本原理,接着从天线、接收机、数字相关器和图像反演四方... 详细信息

对中国空间技术研究院西安分院研制的X波段二维综合孔径微波辐射计的试验系统进行了研究。首先介绍了国内外综合孔径微波辐射计样机的发展概况,并阐述了综合孔径微波辐射系统的基本原理,接着从天线、接收机、数字相关器和图像反演四方面介绍了此套X波段二维综合孔径微波辐射计试验系统的构成与机理,之后利用该套设备进行外场试验并对噪声点源、建筑物大楼与近场人物分别进行观测成像,最后对成像结果与系统性能进行了分析。分析表明该系统具有良好的性能,可以完成初步成像要求。

关键词： X波段二维综合孔径微波辐射计成像系统性能

Preparation and Properties of Organically Modified Sepiolite/High-performance Epoxy Nanocomposites

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Chinese Journal of Aeronautics 2006年第B12期19卷 41-46页

作者： lu hai-jun Aerospace Institute of Special Materials and Technology Beifing 100074 China

Fibrous organic sepiolites （OSEP） and novel epoxy/OSEP nanocomposites were prepared, and different methods were investigated to produce an intercalated/exfoliated structure of OSEP. Experimental results show that the modifier molecules can be easily adsorbed by the sepiolite, but the layer space （d001 of the sepiolite, linked by means of covalent bond, remains unchanged. A proper method to solve this problem appears to exert large shearing force on the original sepiolite followed by its organic modification （OSEP2）. The morphology observation shows that there are formed an even dispersion of nano-sized OSEP2 fibers in epoxy resin and a structure intercalated by epoxy molecules, which lead to significantly improved mechanical properties. Impact strength of the epoxy/OSEP2 nanocomposite increases from 32.1 kJ/m^2 to 44.4 kJ/m^2, 38.3% higher than that of pristine matrix with 3 wt% OSEP2 content. It is also noted that the flexural strength of the OSEP/epoxy composites has risen by about 3% higher than that of the pure epoxy resin.

关键词： sepiolite intercalation/exfoliation epoxy nanocomposites

海南省文昌鸡主要养殖地区鸡毒支原体和鸡滑液囊支原体的血清学调查与分析

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动物医学进展 2025年第1期46卷 62-67页

作者：薛琛璐张艳刘海隆晁哲魏立民刘光亮新疆农业大学动物医学学院新疆乌鲁木齐830052 海南省农业科学院三亚研究院(海南省实验动物研究中心) 海南三亚572025 海南省农业科学院畜牧兽医研究所/海南省热带动物繁育与疫病研究重点实验室海南海口571100

为探明海南省文昌鸡主要养殖地区鸡毒支原体(MG)和鸡滑液囊支原体(MS)的感染情况,采集来自海口、文昌、琼海、儋州4个文昌鸡主要养殖地区的13个不同规模鸡场未经MG、MS疫苗免疫的文昌鸡血样1726份,采用酶联免疫吸附试验进行MG、MS血清... 详细信息

为探明海南省文昌鸡主要养殖地区鸡毒支原体(MG)和鸡滑液囊支原体(MS)的感染情况,采集来自海口、文昌、琼海、儋州4个文昌鸡主要养殖地区的13个不同规模鸡场未经MG、MS疫苗免疫的文昌鸡血样1726份,采用酶联免疫吸附试验进行MG、MS血清抗体检测。结果显示,MG和MS的抗体总阳性率分别为42.00%和31.75%;4个地区以琼海市的MG抗体阳性率最高,达到68.00%;儋州市的MS抗体阳性率最高,达到36.67%;冬季MG的感染率较高,抗体阳性率达47.48%,夏、秋两季MS的感染率较高,抗体阳性率分别为37.85%和35.87%;成年文昌鸡MG和MS的抗体阳性率高于雏鸡和育成鸡(P<0.05),分别为74.45%和59%;小规模场的MG、MS抗体阳性率最高,分别为54.10%和46.45%;不同养殖类型的文昌鸡以商品代蛋鸡MG的抗体阳性率最高,达到83.33%,商品代肉鸡MS的抗体阳性率最高,达到37.04%。结果表明,海南省文昌鸡主要养殖地区普遍存在MG、MS感染。提示各养殖地区应针对性地加强对文昌鸡MG和MS的防控,以减少疫病发生。

关键词：鸡毒支原体鸡滑液囊支原体血清学文昌鸡海南省

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基于密封气压检测的引下线腐蚀状态监测研究

电工电气 2020年第10期 43-47页

作者：周金邢鲁海亮印希宇胡向红文习山国网浙江诸暨市供电有限公司浙江诸暨311800 武汉安海迅科技有限公司湖北武汉430072 国网四川省电力公司成都供电公司四川成都610000 绍兴建元电力集团有限公司浙江绍兴312000 武汉大学电气与自动化学院湖北武汉430072

目前国内杆塔或其他电力设施的接地引下线均未做防腐措施处理,对电力系统的安全运行造成极大隐患。提出了可用于变电站及输电线路接地引下线的腐蚀状态监测方法,并设计了基于密封气压检测的引下线腐蚀状态监测装置,将中空充气密封状态... 详细信息

目前国内杆塔或其他电力设施的接地引下线均未做防腐措施处理,对电力系统的安全运行造成极大隐患。提出了可用于变电站及输电线路接地引下线的腐蚀状态监测方法,并设计了基于密封气压检测的引下线腐蚀状态监测装置,将中空充气密封状态的腐蚀单元与接地引下线一同埋入土壤中,且与接地引下线保持电气连接,保证监测装置与接地引下线在同样的土壤环境中发生腐蚀,且具有同样大小的通流。通过制作实验室模型及可行性试验,验证了该装置可实现免开挖接地引下线腐蚀状态的监测功能。

关键词：接地引下线防腐措施腐蚀监测免开挖

TWO new rotenoids from the root of Derris elliptica

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Chinese Chemical Letters 2008年第10期19卷 1218-1220页

作者： hai Ying lu Jing Yu liang Ping Yu Wei Qu Ling Zhao Department of Natural Medicinal Chemistry China Pharmaceutical University Nanjing 210009 PR China

Two new rotenoids 4＇,5＇-dihydroxy-6a,12a-dehydrodeguelin （1）,11.4t,5＇-tdhydroxy-6a,12a-dehydrodeguelin （2）, along with two known rotenoids rotenone and deguelin were isolated from the root of Derris elliptica c... 详细信息

关键词： Derris elliptica Rotenoid

Microstructure and properties of honeycomb composite films containing Eu and Sn

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Rare Metals 2023年第6期42卷 2068-2074页

作者： hai-Yan Chen lu Li Zhi-Feng Wang Jun-liang Liu Cheng-Yin Wang Ming Zhang School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou225009China School of Chemistry and Chemical Engineering Yangzhou Polytechnic CollegeYangzhou225127China Testing Center Yangzhou UniversityYangzhou225009China

Honeycomb composite films were prepared by breath figure method via a straightforward,one-step process by doping complex containing Eu or Sn into polystyrene-b-poly(acrylic acid) *** key influencing factors,such as the concentration of the block polymer solution,the relative humidity of the environment and the amount of complexes,were investigated to control micropore size and tune film surface *** characteristics of the composite films were studied by scanning electron microscopy(SEM),atomic force microscopy(AFM),X-ray diffraction(XRD),ultraviolet and emission *** indicate that composite films containing Eu have excellent optical performance,and micro-patterned bowl-like SnO_(2) microparticles could be fabricated from composite films containing Sn after being calcined at 600℃ for 5 *** general approach for the fabrication of honeycomb composite films opens a convenient and effective route to the functional modification of honeycomb films and offers new prospects for the application in miniaturized sensors,micro-reactor and catalysis.

关键词： Honeycomb composite film Complex containing Eu Tin dioxide Breath figure method Microstructure

Ir/Phase-Transfer-Catalysis Cooperatively Catalyzed Asymmetric Cascade Allylation/2-aza-Cope Rearrangement: An Efficient Route to Homoallylic Amines from Aldimine Esters

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Chinese Journal of Chemistry 2020年第1期38卷 82-86页

作者： liang Wei lu Xiao Zuo-Fei Wang hai-Yan Tao Chun-Jiang Wang College of Chemistry and Molecular Sciences Wuhan UniversityWuhanHubei 430072China State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryShanghai 230021China

Summaryof main observation and conclusion Herein,we developed an Ir/phase-transfer-catalysiscooperatively catalyzed asymmetric cascade allyla-tion/2-aza-Cope rearrangement of aldimine esters to prepare synthetically important homoallylic amines in good yields with excellent *** with the bimetallic catalytic system to realize this transformation,the current cooperative Ir/tetrabutyl ammonium bromide catalytic system provides an alternative but more practical approach,which not only simplify the manipulation process but also increase the cost efficiency.

关键词： system simplify catalysis

Quantum transport in topological semimetals under magnetic fields (Ⅱ)

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Frontiers of physics 2019年第3期14卷 1-24页

作者： hai-Peng Sun hai-Zhou lu Department of Physics Harbin Institute of Technology Harbin 150001 China Shenzhen Institute for Quantum Science and Engineering and Department of Physics Southern University of Science and Technology Shenzhen 518055 China Shenzhen Key Laboratory of Quantum Science and Engineering Shenzhen 518055 China

We review our recent works on the quantum transport, mainly in topological semimetals and also in topological insulators, organized according to the strength of the magnetic field. At weak magnetic fields, we explain the negative magnetoresistance in topological semimetals and topological insulators by using the semiclassical equations of motion with the nontrivial Berry curvature. We show that the negative magnetoresistance can exist without the chiral anomaly. At strong magnetic fields, we establish theories for the quantum oscillations in topological Weyl, Dirac, and nodal-line semimetals. We propose a new mechanism of 3D quantum Hall effect, via the "wormhole" tunneling through the Weyl orbit formed by the Fermi arcs and Weyl nodes in topological semimetals. In the quantum limit at extremely strong magnetic fields, we find that an unexpected Hall resistance reversal can be understood in terms of the Weyl fermion annihilation. Additionally, in parallel magnetic fields, longitudinal resistance dips in the quantum limit can serve as signatures for topological insulators.

关键词： topological semimetai topological insulator quantum oscillation negative magne to resistance quantum Hall effect