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Synthesis of lsochroman-4-one and Its Derivatives (Ⅰ)

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Chemical Journal of Chinese Universities 1985年第1期 68-76页

作者： Tan Zhiming,Yin Bingzhu,Jiang Guiji and Li Hesong (department of Chemistry,Yanbian Universiy,Yanji)Tan Zhiming,Yin Bingzhu both are postgraduate Students,graduated form Yanbian university in 1982

The medium was modified in the synthesis of the ***-one of isochroman-4-one derivatives were *** those there were five o-acyl oximes,six mannich bases,four 3-methylene substituted compounds and six pyrimidino and pyra... 详细信息

关键词： Th Synthesis of lsochroman-4-one and Its Derivatives

我国优秀女子竞走运动员身体重心运动轨迹的生物力学研究

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天津体育学院学报 2003年第4期18卷 78-80页

作者：张德荣魏统朋陈亮天津体育学院教育科学系天津300381 天津体育学院研究生部天津300381 天津体育学院实验中心天津300381

以计算机输出的大量运动学参数与图表为依据从运动生物力学角度分别对第8届、第9届全运会10名女子竞走运动员一个单步的身体重心运动轨迹进行定量和定性分析,并进一步分析了身体重心起伏程度与腾空时间、支撑腿踝角的关系。分析结果为,1... 详细信息

以计算机输出的大量运动学参数与图表为依据从运动生物力学角度分别对第8届、第9届全运会10名女子竞走运动员一个单步的身体重心运动轨迹进行定量和定性分析,并进一步分析了身体重心起伏程度与腾空时间、支撑腿踝角的关系。分析结果为,10名运动员均采用“足踵触地,踝关节背屈”滚动式的着地技术,以及后蹬腿“脚尖离地”技术,身体重心在支撑腿离地瞬时达到最大高度在垂直支撑瞬时最低身体重心腾空阶段的运动轨迹呈现平抛曲线而非斜上抛曲线;腾空阶段的身体重心高度差而非身体重心总的高度差是决定腾空时间的主要因素。

关键词：竞走女子优秀运动员重心运动轨迹

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国家蹦床集训队训练方法的分析

西安体育学院学报 1998年第4期15卷 34-38页

作者：刘海元西安体育学院研究生部

通过现场和录像的统计与观察，对国家蹦床集训队在天津集训期间的训练指导思想和训练方法做了分析和总结，初步得出了蹦床项目的性质特征和训练要求，并对蹦床训练周课次的安排、课的结构模式作了总结。

关键词：分析总结训练方法蹦床

Characteristics of Regional Differentiation of Urbanization Development in Anhui Province

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Asian Agricultural Research 2011年第4期3卷 107-111,116页

作者： SHI Fei1,2.CHU Jin-long1,GU Kang-kang1 1.school of Architecture and Urban Planning,Anhui Construction Industry Institute,Hefei 2.002.,China 2.department of Architectural Engineering,Suqian College,Suqian 2.3800,China school of Architecture and Urban Planning Anhui Construction Industry Institute department of Architectural Engineering Suqian College

On the basis of connotation of urbanization,by using SPSS factor analysis and cluster analysis,we establish index system of urbanization development level and conduct quantitative analysis on development level of urbanization in 17 prefecture-level city of Anhui Province,in order to find out the differentiation pattern of regional space of urbanization development in Anhui Province based on *** results show that Anhui's difference of urbanization gradient is *** of three clusters shows that the pattern of status quo of urbanization development in Anhui Province is "dual-nucleus" and "two-stretches";classification of five clusters show that the pattern of status quo of urbanization development in Anhui Province is "one-core","one-strip" and "three-region".From five aspects,namely natural geography,transportation location,resources distribution,economic development and administrative system,we analyze the reason and influencing factors of differentiation of urbanization development in the *** results of three clusters and five clusters show that there is great possibility that "dual-nucleus" changes into "individual-nucleus";"one-core" and "one-strip" may evolve into "one-group".We should foster the urban agglomeration in central Anhui;perfect structure system in the perspective of integration and fostering;strengthen infrastructure construction and regional coordination system;elevate comprehensive competitiveness and guide holistic development of regional economy;promote industrialization process and promote development level of urbanization.

关键词： Urbanization level Regional differentiation Spatia

Decoupling Control of Flatness and Gauge Based on Cerebellar Model Control System in Hot-rolling

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Decoupling Control of Flatness and Gauge Based on Cerebellar...

2.11 Chinese Control and Decision Conference（CCDC）

作者： Boqun Li is with the University of Science and Technology Liaoning,school of Electronic and Information Engineering,Anshan,114044 China.Guolin Zhang is with the Yichun University,department of Mathematics and Computer Science,Yi Chun,336000 China.Chanqing Zhu is with the University of Science and Technology Liaoning,school of Materials Science and Metallurgy Engineering,A postgraduate student.

Strip rolling is a very complicated nonlinear process,and characterized by couple between automatic shape control （ASC） and automatic gauge control （AGC）,the coupling relationship between ASC and AGC heavily affects the improvement of combined controlling *** paper presents a kind of multivariable combination control system based on *** perfect simulation results indicate that the ASC-AGC control system has good performances in adaptively tracking target and excellent anti-interference *** the same time,the cross coupling between ASC and AGC is reduced.

关键词： Intelligent decoupling control Shape control Gauge control CMAC

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对SAR卫星天线旁瓣信号侦察研究

装备指挥技术学院学报 2004年第2期15卷 103-107页

作者：曲卫吴彦鸿贾鑫装备指挥技术学院研究生部北京101416 装备指挥技术学院测量控制系北京101416

对合成孔径雷达(synthetic aperture radar,SAR)卫星旁瓣侦察和跟踪的目的是:为地面对SAR的干扰系统提供SAR卫星过顶的预警,引导地面干扰天线对准SAR卫星,提高干扰系统的效能.针对SAR卫星天线的工作特点,重点研究了SAR卫星天线旁瓣增益... 详细信息

对合成孔径雷达(synthetic aperture radar,SAR)卫星旁瓣侦察和跟踪的目的是:为地面对SAR的干扰系统提供SAR卫星过顶的预警,引导地面干扰天线对准SAR卫星,提高干扰系统的效能.针对SAR卫星天线的工作特点,重点研究了SAR卫星天线旁瓣增益变化的范围及趋势,推导了对SAR卫星旁瓣进行侦察的侦察方程;建立了SAR卫星过顶的场景模型,仿真分析中利用了真实SAR卫星的天线参数及轨道参数,计算了天线跟踪角速度、SAR卫星在侦察天线处的功率密度等参数随时间变化的关系;分析了对SAR卫星旁瓣信号进行侦察跟踪的若干问题,为地面侦察跟踪系统各指标的研制提供参考.

关键词：合成孔径雷达旁瓣侦察跟踪 SAR 卫星天线信号侦察

Risk Analysis of Butterfly Arch Continuous Girder Bridge’s V-shaped Pier During the Construction Process on the Basis of AHP-Gca method

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Risk Analysis of Butterfly Arch Continuous Girder Bridge’s ...

第二十九届中国控制会议

作者： WANG Lifeng 1,SUN Yong 2.1.Associate professor,Bridges department of Civil Engineering College,Northeast Forestry University,Harbin 150040,P.R.China2.postgraduate student of Civil Engineering College,Northeast Forestry University,Harbin 150040,P.R.China

Based on the butterflyarch continuous girder bridge in HeiHe,China,this paper mainly deals with a quantitative risk analysis for V-shaped pier during the construction process,by using Analytic Hierarchy Process-Grey Correlation Analysis ***,hierarchical model of risk analysis is established,and structural property is identified as the highest risk factors during V-shaped pier construction using the AHP ***,the optimal construction scheme with the least risk is chosen from candidates by using Gca method,according data obtained in AHP *** concluded that,the AHP-Gca method shows good accuracy,and has an advantage over qualitative *** is reasonable and applicable,providing a theoretical basis for risk decision-making during the construction of V-shaped pier.

关键词： Analytic HierarchyProcess Grey Correlation Analysis Method Risk Analysis V-shaped Pier Butterfly Arch Continuous Girder Bridge

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环路系数偏差对前馈放大系统影响分析

装备指挥技术学院学报 2004年第6期15卷 79-82页

作者：左丽芬李晓波刘风亮装备指挥技术学院研究生部北京101416 装备指挥技术学院测量控制系北京101416

基于前馈放大器的基本原理,对由前馈放大器环路系数的相对偏差产生的"交调消除"影响进行了理论分析;通过System View软件仿真,给出了仿真结果;指出了在设计前馈放大器时,需要注意的几个问题.

关键词：放大器前馈交调放大系统软件仿真环路仿真结果设计基本原理系数

Effect of bisphenol A and co-administration of bisphenol Aand vitamin C on epididymis of adult rats:A histological and biochemical study

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Asian Journal of Andrology 2003年第3期5卷 203-208页

作者： K.C.Chitra K.Ramachandra Rao P.P.Mathur school of Life Sciences Pondicherry University Pondicherry 605 014 IndiaDepartment of Anatomy Jawaharlal Institute of Postgraduate Medical Education and Research Pondicherry 605 006 IndiaSchool of Life Sciences Pondicherry University Pondicherry 605014 India

Aim: To study the effect of bisphenol A on the epididymis and epididymal sperm of rats and the possible amelioration action of co-administration with vitamin C. Methods: Male Wistar rats were orally administered bisphenol A (0.2.μg·kg-1·day-1, 2.μg·kg-1·day-1 and 2. μg·kg-1·day-1) and 0.2.μg, 2.g and 2. μg bisphenol A + 40 mg vitamin C·kg-1·day-1 for 60 days. On day 61, rats were killed with anesthetic ether and sperm collected from epididymis were used for assessment of sperm count, motility and viability and biochemical studies. A 1 % homogenate of epididymis was prepared and used for biochemical estimations. caput, corpus and cauda epididymis were fixed in Bouin's fixative for histological studies. Results: Administration of bisphenol A caused a reduction in the epididymal sperm motility and count and the sperm viability remained unchanged. The activities of superoxide dismutase and glu-tathione peroxidase decreased, while the levels of lipid peroxidation increased in epididymal sperm and epididymis at all doses. Co-administration with vitamin C reversed the effect of bisphenol A-induced oxidative stress in epididymal sperm and epididymis. A complete degeneration of epididymal epithelium in caput, corpus and cauda regions with reduction in the number of sperms were observed at all doses of bisphenol A-treated rats. Conclusion: Bisphenol A induced oxidative stress in epididymis and caused degeneration of the epididymal epithelium of rats. Co-administration with vitamin C had a protective effect against the bisphenol A-induced toxicity in epididymal sperm and epididymis.

关键词： bisphenol A epididymis spermatozoa ascorbic acid antioxidant enzymes lipid peroxidation reactive oxygen species oxidative stress