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Structure and Oxidation Behavior of a Plasma Sprayed Yttrium Silicates Coated SiC-C/C with a Glass Outer Sealant from 1573K to 1873K

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Journal of Wuhan university of Technology(Materials Science) 2008年第1期23卷 33-37页

作者：黄剑锋 LI Hejun ZENG Xierong CAO Liyun LI Kezhi XIONG Xinbo LI Long School of Materials Science and Engineering Shaanxi University of Science and Technology Xi an 710021 China C/C Composites Technology Research Center Northwestern Polytechnical University Xi an 710072 China department of Materials Science Shenzhen University Shenzhen 518060 China

Different compositions of yttrium silicates coatings were deposited on SiC-C/C by plasma spraying and an outer borosilicate glass was applied on the yttrium silicates coatings surfaces. The structure of the multi-layer coatings was characterized by XRD and SEM analyses. High temperature oxidation behavior of the multi-layer coatings coated C/C composites was investigated. Results show that SiC/2.iO2.Y2.3/1.5SiO2.Y2.3/ SiO2.Y2.3/glass multi-layer coating has better high temperature oxidation resistance, protecting carbon/ carbon composites from oxidation at 1 773 K in air for 164 h with the weight loss of 1.65%. The oxidation weight loss of the coated C/C with time accorded with parabolic rule in the temperature range 1 573 K-1 873 K; and the corresponding oxidation activation energy of the coated carbon/carbon composites is 132.2.kJ/mol.

关键词： carbon/carbon composites plasma spraying coating oxidation behavior

Potential land for plantation of Jatropha curcas as feedstocks for biodiesel in China

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Science China Earth Sciences 2010年第1期53卷 120-127页

作者： WU WeiGuang 1,2.3,HUANG JiKun 1,3 & DENG XiangZheng 1,3 1 Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijing 100101,China 2.department of Economics and Management,Zhejiang Forestry university,Linan 311300,China 3 Center for Chinese Agricultural Policy,Chinese Academy of Sciences,Beijing 100101,China 1. Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China2. Department of Economics and Management Zhejiang Forestry University Linan 311300 China3. Center for Chinese Agricultural Policy Chinese Academy of Sciences Beijing 100101 China

As a renewable energy,biofuel has attracted great attention in China and the rest of *** with the national food security,China recently has shifted its biofuel development priority from grain-based to non-grain-based biofuels,including forest-based biodiesel,since *** curcas is one of major biodiesel ***,there is rising debate on availability of land for expanding Jatropha curcas *** overall goal of this paper is to evaluate potential land for Jatropha curcas used as feedstock for biodiesel in *** on remote sensing data on land use,data on meteorological,soil and land slope,and suitable environment for Jatropha curcas plantation,this study uses Agro Ecological Zone method and considers social-economic constraints to evaluate potential suitable land for Jatropha curcas plantation in China's major Jatropha curcas production region,Southwest *** results show that while there are some potential lands to expand Jatropha curcas areas,amount of these lands will hardly meet the government's target for Jatropha curcas-based biodiesels development in the *** may need to reconsider its long-term targets on the development of Jatropha curcas-based biodiesels.

关键词： biodiesel Jatropha curcas potential land suitability evaluation Southwest China

激光散斑光强分布的阈化处理及其对功率谱的影响

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中国激光 1998年第6期25卷 539-542页

作者：周昕程新路吴国栋四川联合大学光电科学技术系四川联合大学高温高压物理与原子分子科学研究所四川联合大学应用物理研究所冲击波物理与爆轰物理实验室

给出了一种阈化处理激光散斑光强多灰度值分布（如２５６级灰度）的方法。采用此种处理方法，激光散斑的功率谱强度随空间频率的分布保持不变，而计算机存贮散斑图样所需的存贮空间可极大地减少。针对具体的圆形和环形散射屏引入的散斑... 详细信息

给出了一种阈化处理激光散斑光强多灰度值分布（如２５６级灰度）的方法。采用此种处理方法，激光散斑的功率谱强度随空间频率的分布保持不变，而计算机存贮散斑图样所需的存贮空间可极大地减少。针对具体的圆形和环形散射屏引入的散斑图样，采取使处理前后的功率谱偏差最小的方法，找出了最佳的阈值。

关键词：激光散斑光强阈化处理功率谱激光物理

Selected issues at the interface between nuclear physics and astrophysics as well as the standard model

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中国科学：物理学、力学、天文学英文版 2011年第S1期54卷 119-123页

作者： MENG Jie1,2.3, NIU ZhongMing1, LIANG HaoZhao1 & SUN BaoHua2.4 1State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking university, Beijing 100871, China 2.chool of Physics and Nuclear Energy Engineering, Beihang university, Beijing 100191, China 3{2. of Physics, university of Stellenbosch, Stellenbosch, South Africa 4Justus-Liebig-Universita¨t Giessen, Heinrich-Buff-Ring 14, Giessen 35392. Germany 1. State Key Laboratory of Nuclear Physics and Technology School of Physics Peking University Beijing 100871 China 2. School of Physics and Nuclear Energy Engineering Beihang University Beijing 100191 China 3. department of Physics University of Stellenbosch Stellenbosch South Africa 4. Justus-Liebig-Universit?t Giessen Heinrich-Buff-Ring 14 Giessen 35392 Germany

The density functional theory (DFT) with a minimal number of parameters allows a very successful phenomenological description of ground state properties of nuclei all over the periodic table. The recent developments on the application of the covariant density functional theory as well as its extensions by the group in Beijing for a series of interests and hot topics in nuclear astrophysics and nuclear structure are reviewed, including the rapid neutron-capture process, Th/U chronometer, and isospin corrections for superallowed β transitions.

关键词： rapid neutron-capture process nuclear chronometer isospin symmetry-breaking corrections

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幼猪室间隔缺损动物模型研究

四川动物 2004年第1期23卷 21-23页

作者：魏新川刘瀚旻隋东虎周同甫四川大学华西医院麻醉科心脏外科四川大学华西第二医院儿科成都610041

目的　探讨幼猪室间隔缺损的实验动物模型的建立方法。方法　 16只幼猪在全麻下经右心耳行室间隔穿刺造口置环 ,建立室间隔缺损。术后 3天行超声心动图、术后 1月行心导管检查。结果　 11只猪手术成功。经超声心动图、心导管检查确认有... 详细信息

目的　探讨幼猪室间隔缺损的实验动物模型的建立方法。方法　 16只幼猪在全麻下经右心耳行室间隔穿刺造口置环 ,建立室间隔缺损。术后 3天行超声心动图、术后 1月行心导管检查。结果　 11只猪手术成功。经超声心动图、心导管检查确认有 10只建模成功。超声心动图示最大分流流速Vmax为 1 7～ 4 4m/sec (2. 6 3± 0 92.)。血流动力学指标测定结果示肺动脉压无显著升高 ,Qp/Qs 1 6 8～ 2. 12.(1 84± 0 2.4 )。结论　采用改良的Synhorst方法在国内首次成功建立了幼龄室间隔缺损动物模型 ,对深入了解左向右分流先心病病理生理改变具有重要意义。

关键词：室间隔缺损动物模型猪超声心动图

意向性关联结构在胡塞尔和早年海德格尔思想中的作用

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四川大学学报（哲学社会科学版） 2001年第6期 40-46页

作者：欧东明四川大学南亚研究所助理研究员四川成都610064

胡塞尔最初所追问的是“一般认识何以可能”的问题 ,早年海德格尔关于存在的(本原 )意义的问题则超出并包容了胡塞尔的问题。为建立一门无前提的“本源科学” ,面对自己的问题目标 ,两人都采用相近的意向性思路来予以解决。只不过胡塞... 详细信息

胡塞尔最初所追问的是“一般认识何以可能”的问题 ,早年海德格尔关于存在的(本原 )意义的问题则超出并包容了胡塞尔的问题。为建立一门无前提的“本源科学” ,面对自己的问题目标 ,两人都采用相近的意向性思路来予以解决。只不过胡塞尔的“意向性”处在 (纯 )意识的内在性领域 ,而海德格尔的“生活经验”的意向性已不局限于任何现成的领域 ,只具有一种意向性的纯形式的“关联”意义。运用意向性关联的思路 ,胡塞尔和早年海德格尔才得以互有区别地显示出各自的意义世界 ,并揭示出其意义世界的 (无前提的 )自构成机能。其中 ,早年海德格尔关于“生活经验的意义关联域”

关键词：胡塞尔海德格尔意识意向性生活经验自构成机能意向性关联结构意义世界意义关联域

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蒙文通先生与宋史研究——读《蒙文通文集》

四川大学学报（哲学社会科学版） 2004年第6期 89-97页

作者：胡昭曦四川大学历史文化学院四川成都610064

蒙文通先生是我国现代杰出的历史学家和经学家 ,《蒙文通文集》所收著述 ,表现了他在宋史研究方面成果硕大。他把治经成果和方法引入历史研究 ,精研理学 ,哲史相通 ,明确提出唐宋之际社会的全面变革 ,深入辨析熙丰变法和宋代的商品经济 ... 详细信息

蒙文通先生是我国现代杰出的历史学家和经学家 ,《蒙文通文集》所收著述 ,表现了他在宋史研究方面成果硕大。他把治经成果和方法引入历史研究 ,精研理学 ,哲史相通 ,明确提出唐宋之际社会的全面变革 ,深入辨析熙丰变法和宋代的商品经济 ,着力构建宋代史学史的新体系等 ,可谓自成体系 ,创见卓立 ,教书育人 ,荦荦大家 ,是我国现代宋史学的奠基人之一。

关键词：蒙文通《蒙文通文集》宋史研究

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金刚石膜同步辐射X-射线掩模的研究进展

四川师范大学学报（自然科学版） 2001年第6期24卷 618-621页

作者：万静 立冉均国四川大学无机非金属材料系

超大规模集成电路 (VLSI)线宽不断缩小促进了光刻技术的发展和分辩率的提高 ,缩短光波长和改进掩模是提高分辨率的重要途径 .探索采用X 射线光刻技术时 ,用金刚石薄膜作为掩模基膜的研究现状与发展方向 .金刚石薄膜因其具有优异的机械... 详细信息

超大规模集成电路 (VLSI)线宽不断缩小促进了光刻技术的发展和分辩率的提高 ,缩短光波长和改进掩模是提高分辨率的重要途径 .探索采用X 射线光刻技术时 ,用金刚石薄膜作为掩模基膜的研究现状与发展方向 .金刚石薄膜因其具有优异的机械、光学和热学性能 ,已成为新一代掩模基膜材料的理想候选材料 .介绍了金刚石薄膜用作掩模基膜材料上取得的实验成果。

关键词：金刚石薄膜 X-射线光刻掩模 CVD沉积工艺薄膜应力薄膜粗糙度

Spatial and Temporal Variability of N, P and K Balances for Agroecosystems in China

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Pedosphere 2005年第3期15卷 347-355页

作者： SHENRun-Ping SUNBo ZHAOQi-Guo InstituteofSoilScience ChineseAcademyofSciencesNanjing210008（China）／／DepartmentofSpatialInformationScienceNanjingUniversityofInformationScienceandTechnologyNanjing210044（China） InstituteofSoilScience ChineseAcademyofSciencesNanjing210008（China）

Nitrogen, phosphorus, and potassium balances for agroecosystems in China from 1993 to 2.01 were calculated at national and provincial levels using statistical data and related parameters, and their spatial and temporal variabilities were analyzed with GIS to estimate the potential impacts of nutrient N, P and K surpluses or deficits to soil, water and air. At the national scale, the N and P balances from 1993 to 2.01 showed a surplus, with the nitrogen surplus remaining relatively stable from 1997—2.01. Although during this period the P surplus pattern was similar to N, it had smaller values and kept increasing as the use of phosphate fertilizer increased year by year. However, K was deficient from 1993 to 2.01 even though from 1999 to 2.01 the K deficit decreased. The spatial analysis revealed higher N surpluses in the more developed southeastern provinces and lowest in the western and northern provinces where there was less chemical fertilizer input. The serious K deficit mainly occurred in Shanghai and Beijing municipalities, Jiangsu, Zhejiang and Hubei provinces, and Xinjiang autonomous regions. For the years 1992. 1996 and 2.01, N surpluses and K deficits had significant positive spatial correlations with per capita gross domestic product (GDP), per capita gross industrial output value, and per capita net income of rural households. This showed that the level of economic development played an important role on nutrient balances in the agroecosystems.

关键词： China economic factors NPK balance spatial and temporal variability