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思想战线 2001年第5期27卷 67-71页

作者：袁济喜中国人民大学中文系北京 100872

中国古代有悠久的审美教育传统 ,它从礼乐文化派生而来 ,体现出深厚的人文精神传统。中西方美育传统之一致在于对人的综合素质之培养。如果没有人文关怀 ,当代美学与传统美学之间的精神纽带就会断裂。当今中国美学出现的低迷状况 ,主要... 详细信息

中国古代有悠久的审美教育传统 ,它从礼乐文化派生而来 ,体现出深厚的人文精神传统。中西方美育传统之一致在于对人的综合素质之培养。如果没有人文关怀 ,当代美学与传统美学之间的精神纽带就会断裂。当今中国美学出现的低迷状况 ,主要由人文精神迷失所致 ,美学未能从工具论的价值观中走出来 ,当代美学建设应积极借鉴我国传统美育思想资源。

关键词：传统美育人文精神工具论当代美学建设

Study on Quenching and Tempering Process of Q960 High Strength Steel for Construction Machinery

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Journal of Iron and Steel Research International 2011年第S1期18卷 432-436页

作者： WANG Zhao-dong 1,KANG Jian 1,LU Feng 1,2.DENG Xiang-tao 1,WANG Chao 1,WANG Guo-dong 1 (1.State Key Lab of Rolling and Automation,Northeastern university,Shenyang 110004,Liaoning,china 2.Wide Heavy Plate Project {2. of Tangshan Iron and Steel Corporation,Tangshan 063000,Hebei,china) Northeastern Univ State Key Lab Rolling & Automat Shenyang 110004 Liaoning Peoples R China Tangshan Iron & Steel Corp Wide Heavy Plate Project Dept Tangshan 063000 Hebei Peoples R China

To develop the Q960 high-strength quenched and tempered steel plates for construction machinery,the effects of quenching and tempering treating regime on the microstructures and mechanical properties were *** results show that the perfect austenization and fine grain size can be achieved by the optimum quenching process that is quenching temperature 900℃ and holding time *** performance and production efficiency,the optimum tempering process parameters are found that tempering temperature 600℃ and holding time *** excellent overall properties of specimens with tempered sorbite microstructure can be ultimately *** yield strength is 1030MPa,tensile strength 1080MPa,percentage elongation 16.8% and the Charpy impact energy 144J at-40℃.All these indexes come up to the National Standard GB/T 162.0-2.09.

关键词： high strength steel quenching and tempering treatment microstructure mechanical properties

A primary study on the efficacy and safety of vascular endothelial growth factor’s gene therapy on the rat model of cerebral ischemic reperfusion via recombinant adenovirus

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A primary study on the efficacy and safety of vascular endot...

金沙江奔子栏-达日河段大型泥石流堆积扇的成因机制

中国神经科学学会第四次会员代表大会暨第七届全国学术会议

作者： Long XU~1,Shi-Fang LI~2.Gui-Lin LI~2.Ren-Zhi WANG~2.Ji-Zong ZHAO~1 1 department of Neurosurgery,beijing Tiantan Hospital,Capital Medical {2.,beijing 100050,china 2.department of Neurosurgery,Peking Union Medical College Hospital,Peking Union Medical College,beijing 100730,china

＜正＞Cerebral infarction is a common and frequently encountered disease,which is mostly onset in people after middle *** its severe complications and high ratios of disability and mortality,peoples’ health and life is seriously threatened in this aging *** the recent 2. years,the research on the basic neuroscience is greatly developed and the pathologic,pathophysiologic and biochemical mechanisms are rapidly developed all over the *** in the molecular biologic fields we have made a lot of ***（Vascular Endothelial Growth Factor） has been shown to have some potential therapeutic function in many ischemic lesions as a powerful protein of *** gene therapy for restenosis and angina using VEGF gene have already performed in USA and they can show beneficial effects of such ***,it is still so confused that whether VEGF plays a good therapeutic role in ischemic stroke, including the safety and working *** this study,we took some primary researches on the VEGF’s efficacy and safety in an animal model of cerebral ischemia by virus mediated gene *** experiment was divided into three parts.（1） We chose the recombinant adenoviruses as vectors carrying both the reporting gene GFP and therapeutic gene *** results showed that the GFP and VEGF proteins were highly expressed both in the 2.3 cells in vitro and brain tissues in vivo of rats.（2. We successfully made the cerebral-ischemia reperfusion animal model by cylinder embolism in *** of the models are evaluated with the neurological severity score（NSS）,the CBF measurements by the laser Doppler,infarction area observation by TTC staining and pathological studies by HE staining.（3） We injected the AdVEGF165 into the lateral cerebral ventricle 3 d before the model-making and detected hVEGF protein expression after the model-making and studied on the possible functions of VEGF used in the brain ischemic animal *** results sh

关键词： cerebral infarction gene therapy recombinant adenovirus vascular endothelial growth factor(VEGF) angiogenesis

来源： cnki会议评论

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山地学报 2011年第3期29卷 312-319页

作者：陈剑崔之久戴福初许冲中国地质大学(北京)工程技术学院北京大学城市与环境学系中国科学院地质与地球物理研究所青藏高原研究室

金沙江上游奔子栏-达日河段属横断山区的干热河谷地带,河谷沿岸大型古泥石流堆积扇广泛发育,其成因却一直没有得到很好的研究。对该区瓦卡大型古泥石流堆积物进行了沉积结构、粒度、地球化学和孢粉等分析,揭示了泥石流的沉积环境及其形... 详细信息

金沙江上游奔子栏-达日河段属横断山区的干热河谷地带,河谷沿岸大型古泥石流堆积扇广泛发育,其成因却一直没有得到很好的研究。对该区瓦卡大型古泥石流堆积物进行了沉积结构、粒度、地球化学和孢粉等分析,揭示了泥石流的沉积环境及其形成过程。通过粗颗粒石英的光释光单片再生法(SAR)测年研究,获得金沙江上游奔子栏-达日河段古泥石流大规模暴发的年代为12.600~4 500 a BP。丰富的风化碎屑物源、陡峻的地形及雨季降水集中是该区古泥石流形成的主要原因。全新世早期青藏高原东南缘受西南季风加强的影响,气候趋于暖湿,季节性暴雨增加。金沙江上游干热河谷区大型泥石流堆积扇的发育年代暗示其是全新世早期西南季风加强作用下的地貌响应。从地质灾害防治的角度,由于现代气候因素导致泥石流灾害的频度和规模较小,预防该区地质灾害的重点应是防止人工砍伐树木和不合理的人工切坡导致对地表环境的破坏加剧。

关键词：金沙江干热河谷泥石流堆积扇气候变化

Remote sensing and geographic information systems in the spatial temporal dynamics modeling of infectious diseases

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Science china(Life Sciences) 2006年第6期49卷 573-582页

作者： GONG Peng 1,XU Bing 2.& LIANG Song 1、3 1. State Key Laboratory of Remote Sensing Science,Jointly Sponsored by the Institute of Remote Sensing Applications,Chi-nese Academy of Sciences and beijing Normal university,Box 9718,beijing 100101,china 2. department of Geography,university of Utah,Salt Lake City,UT 84112.USA 3. School of Public Health,university of California,Berkeley,CA 9472.,USA 1. State Key Laboratory of Remote Sensing Science Jointly Sponsored by the Institute of Remote Sensing Applications Chinese Academy of Sciences and Beijing Normal University Box 9718 Beijing 100101 China 2. department of Geography University of Utah Salt Lake City UT 84112 USA 3. School of Public Health University of California Berkeley CA 94720 USA

Similar to species immigration or exotic species invasion,infectious disease transmis-sion is strengthened due to the globalization of human activities. Using schistosomiasis as an exam-ple,we propose a conceptual model simulating the spatio-temporal dynamics of infectious diseases. We base the model on the knowledge of the interrelationship among the source,media,and the hosts of the disease. With the endemics data of schistosomiasis in Xichang,china,we demonstrate that the conceptual model is feasible; we introduce how remote sensing and geographic information systems techniques can be used in support of spatio-temporal modeling; we compare the different effects caused to the entire population when selecting different groups of people for schistosomiasis control. Our work illustrates the importance of such a modeling tool in supporting spatial decisions. Our mod-eling method can be directly applied to such infectious diseases as the plague,lyme disease,and hemorrhagic fever with renal syndrome. The application of remote sensing and geographic informa-tion systems can shed light on the modeling of other infectious disease and invasive species studies.

关键词： spatio-temporal modeling, spatial connectivity, prevention and control of infectious diseases, biological invasion.

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基于线性时态逻辑的Petri网模型检测

系统仿真学报 2003年第Z1期15卷 6-10页

作者：蒋屹新林闯邢栩嘉清华大学计算机科学与技术系北京100084

Petri网是一种重要的数学工具,它能有效地对并发系统进行描述和建模。线性时态逻辑LTL则是描述和验证并发系统特性的一种重要的形式化工具,它能方便准确地描述并发系统的重要性质,如安全性和活性。文章深入描述了线性时态逻辑、Büchi... 详细信息

Petri网是一种重要的数学工具,它能有效地对并发系统进行描述和建模。线性时态逻辑LTL则是描述和验证并发系统特性的一种重要的形式化工具,它能方便准确地描述并发系统的重要性质,如安全性和活性。文章深入描述了线性时态逻辑、Büchi自动机、Petri网和同步积之间的内在联系,并探讨了基于线性时态逻辑的Petri网模型检测策略。与其它方法比较,这种模型检测的策略结合了线性时态逻辑和Petri网模型的不同优点,增强了Petri网的模型分析和验证能力。最后,通过对一个并发系统形式化的模型检测分析,验证了相应的结论。

关键词：线性时序逻辑 Petri网 B u chi自动机同步积模型检测

普通高校体育特长生与体育院校运动系学生训练意愿比较

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体育学刊 2002年第6期9卷 121-124页

作者：夏文王斌王松云南大学体育教研部云南昆明650091 北京体育大学研究生部北京100084 武汉体育学院运动解剖教研室湖北武汉430070

通过问卷对影响普通高校运动系学生训练意愿的因素做了调查与比较 ,用多因素分析法找出 4个主成分 (学校、个人、社会和家庭 )因子 ;并在此基础上对高校体育特长生和运动系学生训练意愿的得分进行了t检验 ,结果表明运动系学生进校后运... 详细信息

通过问卷对影响普通高校运动系学生训练意愿的因素做了调查与比较 ,用多因素分析法找出 4个主成分 (学校、个人、社会和家庭 )因子 ;并在此基础上对高校体育特长生和运动系学生训练意愿的得分进行了t检验 ,结果表明运动系学生进校后运动成绩提高优于高校体育特长生 ,在影响训练意愿的 4个主因中 ,个人主因对运动系学生的影响高于体育特长生 ;而在社会主因方面 ,体育特长生则明显高于运动系学生。

关键词：体育特长生运动系学生训练意愿因素分析

The induction of Sinorhizobium meliloti C4-dicarboxylate transport system （Dct） is regulated by oxygen concentration

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Science Bulletin 2005年第17期 77-81页

作者： WEN Jin1, NAN Beiyan1, Fergal O’Gara2.& WANG Yiping1 1. National Laboratory of Protein Engineering and Plant Genetic Engi-neering, College of Life Sciences, Peking university, beijing 100871,{2. 2. Microbiology department, university College Cork, National Univer-sity Ireland, Cork, Ireland

The Sinorhizobium meliloti C4-dicarboxylate transport (Dct) system is essential for symbiotic nitrogen fixation. The dctA gene, encoding the C4-dicarboxylate per-mease, is expressed in both free living and symbiotic cells. But in free living cells expression of dctD and dctB is abso-lutely required for the expression of dctA. In this study, in order to investigate the effect of oxygen concentration on the induction of Dct system, E. coli DH5α strain which carries the plasmid-encoded dctABD operon was used in tube assays. It was found that the specific induction of Dct system oc-curred only at a certain depth under the surface of M63- 0.6% agar media, suggesting that Dct system could respond to oxygen concentration during succinate-induced expression. Furthermore, when measured at different oxygen concentra-tions, the highest expression level was observed at oxygen concentration of 2.. Thus, we predict that in addition to dicarboxylates, the induction of Dct system may also regu-lated by oxygen concentration.

关键词： Sinorhizobium meliloti Dct system oxygen concentration.

块体金属玻璃Zr_(46.75)Ti_(8.2.)Cu_(7.5)Ni_(10)Be_(2.75)的超导与负电阻温度系数

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物理学报 2004年第3期53卷 844-849页

作者：李勇闻平刘振兴景秀年王万录白海洋重庆大学应用物理系重庆400044 中国科学院物理研究所北京100080

测量了块体金属玻璃Zr4 6 75Ti8 2.5Cu7 5Ni1 0 Be2.7 5在退火前后其电阻值随温度的变化 ,测量的温度范围为 1 5—30 0K .样品在退火前后都发现有超导现象 .零磁场下其超导转变温度Tc 分别为 1 84和 3 76K .在 5— 30 0K温度范围内 ,... 详细信息

测量了块体金属玻璃Zr4 6 75Ti8 2.5Cu7 5Ni1 0 Be2.7 5在退火前后其电阻值随温度的变化 ,测量的温度范围为 1 5—30 0K .样品在退火前后都发现有超导现象 .零磁场下其超导转变温度Tc 分别为 1 84和 3 76K .在 5— 30 0K温度范围内 ,原始样品具有负的电阻温度系数 .如果取Zr,Ti,Cu ,Ni及Be分别贡献出 1 5 ,1 5 ,0 5 ,0 5及两个传导电子 ,则可以用扩展的Faber Ziman理论去解释原始样品的负电阻温度系数 .还对块体金属玻璃Zr4 6 75Ti8 2.5Cu7 5Ni1 0 Be2.7 5在温度范围 5— 30 0K之间的R(T)

关键词：块体金属玻璃负电阻温度系数退火处理超导转变温度 Faber-Ziman理论