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The Role of Nuclear power for china towards Sustainable Future

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The Role of Nuclear Power for China towards Sustainable Futu...

第13.太平洋地区核能大会

作者： Jianchao Zheng china Guangdong Nuclear power Holding Co. Ltd. Science building 1001 shangbu Zhong Road Shenzhen 51803. china

＜正＞The challenges facing china’s energy industry include primary energy shortage,high energy intensity, and serious environmental impacts in connection with energy *** national electrification has been recognized as the top ranked solution toalleviate the situation. The role of nuclear power for meeting the demand in asustainable way is addressed in this paper, with special reference to its indispensablerole in mitigating electricity shortage for the coastal areas. The institutional andtechnical barriers to its large- scale applications and the required policy re-orientationare also analyzed.

关键词： Nuclear power energy policy energy strategy Sustainable development

EXACT SOLUTIONS OF PLANE GRAVITATIONAL WAVES UNDER THE HARMONIC CONDITION

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Science in china,Ser.A 1985年第6期 628-637页

作者：刘宏亚周培源 Institute of High energy Physics Academia Sinica beijing

Under the harmonic condition exact solutions of plane gravitational waves which are free from singularities and contain Einstein’s solutions for weak fields as approximations are obtained. The physical interpretations of the solutions and the relationship with other two typical kinds of solutions are studied in detail. A more general kind of solution containing two polarizations and satisfying the harmonic condition is obtained for the first time.

关键词： EXACT SOLUTIONS OF PLANE GRAVITATIONAL WAVES UNDER THE HARMONIC CONDITION

炭纤维增强C/SiC双基体复合材料的制备及性能(英文)

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新型炭材料 2010年第3期25卷 225-231页

作者：李专肖鹏熊翔黄伯云中南大学粉末冶金国家重点实验长沙410083

以针刺炭纤维整体毡为预制体,联用化学气相沉积法与熔融渗硅法制得炭纤维增强C/SiC双基体(C/C-SiC)复合材料;研究了C/C-Si材料的显微结构、力学性能和不同制动速度下的摩擦磨损性能及机理。结果表明:C/C-SiC材料具有适中的纤维/基体界... 详细信息

以针刺炭纤维整体毡为预制体,联用化学气相沉积法与熔融渗硅法制得炭纤维增强C/SiC双基体(C/C-SiC)复合材料;研究了C/C-Si材料的显微结构、力学性能和不同制动速度下的摩擦磨损性能及机理。结果表明:C/C-SiC材料具有适中的纤维/基体界面结合强度,弯曲强度和压缩强度分别达240MPa和210MPa,具有摩擦系数高(0.41～0.54),磨损小(0.02cm3.MJ),摩擦性能稳定等特点.随着制动速度提高,C/C-Si材料的摩擦磨损机制也随之变化:在低速制动条件下主要表现为磨粒磨损;中速时以黏着磨损为主;高速时以疲劳磨损和氧化磨损为主。

关键词： C/SiC复合材料摩擦磨损性能制动材料化学气相沉积法熔融渗硅

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中小水电并购实践经验浅析

水电能源科学 2011年第8期29卷 162-163,161页

作者：吴静国电云南电力有限公司云南昆明650021

针对国电集团公司调整结构、转型企业、挖掘潜力、打造一流综合性能源集团的要求,国电云南电力有限公司结合自身水、火电结构调整,以中小水电并购为切入点,基于资金、技术、管理、市场等优势对云南省境内的中小水电资源进行并购、整合,... 详细信息

针对国电集团公司调整结构、转型企业、挖掘潜力、打造一流综合性能源集团的要求,国电云南电力有限公司结合自身水、火电结构调整,以中小水电并购为切入点,基于资金、技术、管理、市场等优势对云南省境内的中小水电资源进行并购、整合,提高了水电开发的规模和质量,增加了可再生能源的比重,迈出了企业转型的关键步伐。

关键词：中小水电并购调整结构企业转型技术可开发量切入点

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基于小波包变换与RBF网络的大地目标辨识

信息与电子工程 2003年第1期1卷 12-19页

作者：李合生赵明生毛剑琴吴佑寿清华大学电子工程系中国工程物理研究院电子工程研究所四川绵阳621900 北京航空航天大学第七研究室

利用正交小波包变换的高信号时频分辨特性引入小波包能量特征提取法,用于五类典型大地目标的特征提取和距离可分性测度计算。结果显示,小波包能量特征提取法提取的五类典型大地目标特征具有更好的可分性。将小波包能量特征提取法与径向... 详细信息

利用正交小波包变换的高信号时频分辨特性引入小波包能量特征提取法,用于五类典型大地目标的特征提取和距离可分性测度计算。结果显示,小波包能量特征提取法提取的五类典型大地目标特征具有更好的可分性。将小波包能量特征提取法与径向基函数网络相结合,提出了一种大地目标辨识算法。仿真实验表明,对于分解层次5m=,信噪比B0dSNR,五类典型大地目标能完全辨识。表明该大地目标辨识方法在一定条件下是可行的,具有强的抗噪声干扰能力。

关键词：小波包变换 RBF网络径向基函数网络大地目标模式识别特征提取

甲状腺激素对胆固醇代谢的调节作用 Ⅰ.甲状腺激素和胆固醇代谢反馈机制的关系

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Acta Biochimica et Biophysica Sinica 1964年第3期 351-360页

作者：夏宗勤王世真中国医学科学院放射医学研究所中国医学科学院放射医学研究所北京

本文报告对甲状腺素和胆固醇代谢反馈机制的关系所作初步观察的结果。给小鼠每天皮下注射DL-甲状腺素200微克,连续注射五天后,乙酸钠-1-14C参入肝及腎上腺胆固醇的速度明显增加,而参入肠、腎、睾丸、及脑胆固醇的速度刖无明显变化。甲... 详细信息

本文报告对甲状腺素和胆固醇代谢反馈机制的关系所作初步观察的结果。给小鼠每天皮下注射DL-甲状腺素200微克,连续注射五天后,乙酸钠-1-14C参入肝及腎上腺胆固醇的速度明显增加,而参入肠、腎、睾丸、及脑胆固醇的速度刖无明显变化。甲状腺素对胆固醇合成的这种组织选择性和它对能代谢的组织选择性不一致,说明其促进胆固醇合成可能并不是对能代谢的作用的后果。甲状腺素促进肝胆固醇合成时,肝游离胆固醇含量也升高,合成越快,含量也越多;胆固醇的酯化速度刖无明显改变。如果以过多的外源性胆固醇抑制甲状腺素促进合成的作用,则其提高含量的作用也消失。所以,甲状腺素促进肝胆固醇合成即不是由于降低含量,也不是由于加速酯化,从而使即性反馈减弱的缘故。以较小量外源性胆固醇使肝游离胆固醇含量轻度升高,能明显抑制内源性胆固醇的合成。甲状腺素却在进一步提高含量之同时,使合成之抑制减弱。但当以较大量外源性胆固醇使含量增加过多,甲状腺素之上述作用即消失。故初步认为,甲状腺素的作用可能在于提高胆固醇代谢反馈机制的水平,使含量在一定范围时,负性反馈作用减弱,从而导致合成加快,含量升高。外源性胆固醇对肝外脏器胆固醇合成的影响,在组织选择性上,和甲状腺素的作用是一致的。这一现象究竟说明什么问题,目前尚难断定;但是在深入探讨甲状腺素对胆固醇代谢的调节机制时,这是值得注意的一个方面。

关键词：胆固醇合成肾上腺内分泌腺胆甾醇胆固醇四碘甲状腺原氨酸甲状腺素激素类药物甲状腺激素胆固醇代谢

Design,Synthesis,Structure and Reactivity of Metal-Organic Polyhedra

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Design,Synthesis,Structure and Reactivity of Metal-Organic P...

中国化学会第六届全国结构化学学术会议

作者： Jian-Rong Li~(1,2,*),Ya-Bo Xie,~1 Hai-Yang Zheng~1 and Hong-Cai Zhou~2 1 College of Environmental and energy Engineering,beijing University of Technology, beijing 100124,{3. 2 Department of Chemistry,Texas A&M University,College Station,Texas 77843.USA

＜正＞Metal-organic supramolecular architectures,such as polygons and polyhedra are attracting intense research interest because of their fascinating structures and special properties/*** of these molecular species are constructed by using single metal ions and pre-designed organic bridging ligands. Using metal clusters as connecting nodes has not been widely studied,***,their

关键词：

Microstructure evolution and non-equilibrium solidification of undercooled Ni-29.8at% Si eutectic alloy melts

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Science china(Technological sciences) 2010年第4期53卷 1043-1048页

作者： LU YiPing1,LI TingJu1,TENG HaiTao1,FU YaBo1,LUO DaWei1 &YANG GenCang2 1 School of Materials Science and Engineering,Dalian University of Technology,Dalian 116024,china 2 State Key laboratory of Solidification Processing,Northwestern Polytechnical University,Xi’an710072,china 1. School of Materials Science and Engineering Dalian University of Technology Dalian 116024 China2. State Key Laboratory of Solidification Processing Northwestern Polytechnical University Xi’an 710072 China

Microstructure formation and transition of undercooled bulk Ni70.2Si29.8 eutectic alloy melt were investigated by melt fluxing,cyclical overheating and cooling under high-frequency vacuum *** maximum undercooling of the alloy melt amounted to 428 *** electron microscope(SEM),energy-dispersive X-ray spectroscopy(EDS) and optical microscopy techniques(OM) were adopted to investigate the microstructure and identify the phase *** cooling curves of eutectic alloys upon solidification which were subjected to different undercoolings were described and *** complex microstructure evolution was observed in the as-solidified samples with the increase of ***,an extremely fine microstructure was achieved at the max undercooling of 428 K,and the lamellar distance of about 50-100 nm was *** on the solution entropy of eutectic phases,the microstructure transition with the undercooling was *** results showed that the microstructure transition process was ascribed to solution entropy of transition,i.e.,the complex microstructure evolution was attributed to a transition from faceted-faceted(FF)→faceted-nonfaceted(FN)→nonfaceted-nonfaceted(NN) eutectic systems concurring with increased undercooling.

关键词： interface structure solidification entropy metals and alloys

High-temperature Mechanical Properties of AI2O3.Ti3.iC2 Multilayer Ceramics

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High-temperature Mechanical Properties of AI2O3/Ti3SiC2 Mult...

The 3.〔rd〕International Conference on High-Performance Ceramics(CICC-3.（2）

作者： Q.F. Zan C. Wang L.M. Dong C.A. Wang and Y. HuangState Key laboratory of New Ceramics and Fine Processing Institute of Nuclear and New energyTechnology Tsinghua University beijing 100084 People’s Republic of {3.State Key laboratory of New Ceramics and Fine Processing Department of Materials Science andEngineering Tsinghua University beijing 100084 People’s Republic of {3.

＜正＞ The high-temperature mechanical properties were very important to structural materials, especially structural ceramics. Hence, the strength, elastic modulus, stress relaxation and creep behavior of the multilayer materials at elevated temperature were studied in this paper. According to the curves of mechanical properties varieties with temperature risen from room-temperature to 13.0℃, the multilayer materials could remain relatively high mechanical properties until 1150℃. Otherwise, the creep function of the multilayer composites was also determined, in which the stress exponent was 1.4 and activation energy was 204kJ/mol. By contrasting to the monolithic ceramics of Al2O3.and Ti3.iC2, the main creep mechanisms include: interface diffusion creep （in Al2O3.layers）, dislocation movement creep, grain delamination and sliding （in Ti3.iC2 layers）.

关键词： AI2O3 Ti3.iC2 High-temperature Mechanical properties Multilayer