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THE PROGRESS OF POTENTIAL-pH DIAGRAMS FOR V-H2. SYSTEM

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THE PROGRESS OF POTENTIAL-pH DIAGRAMS FOR V-H2O SYSTEM

Surface-induced Size-dependent Young's Modulus in Nano Materials

第15届溶解度现象及相关相平衡过程国际会议

作者： Zhao 1 2.X.Y.and Zeng 1 2.Y.1 College of Materials and chemistry & Chemical {3. Chengdu {2. of Technology Chengdu 610059 P.R.China 2.Mineral Resources chemistry Key Laboratory of the Higher Education Institutions of sichuan Province Chengdu 610059 P.R.China

＜正＞The potential-pH diagram was first proposed by Belgium corrosion scientist professor Pourbaix M in 193.. [1] All kinds of potential-pH diagram are thermo-dynamical tools,providing informations about the equilibr...

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Surface-induced Size-dependent Young's Modulus in Nano Mater...

中国力学学会学术大会'2.09

作者： Zhang Tongyi,Luo Miao department of Mechanical engineering,The Hong Kong {2. of {3. and Technology,Hong Kong,China,

Nanowires and ultra-thin films have wide applications in the quickly developed nanotechnology and *** surface-to-bulk ratio in nanowires and ultra-thin films is much larger than that in conventional bulk *** higher su...

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硫酸锰铵结晶水的测定及热分析

武汉大学学报（理学版） 2003年第6期49卷 685-688页

作者：宋力胡付欣李苹张克立信阳师范学院化学化工学院河南信阳464000 武汉大学化学与分子科学学院湖北武汉430072

合成了复盐硫酸锰铵,利用热重分析法(TG)、差示扫描量热法(DSC)、微商热重法(DTG)研究了它在氮气气氛中的热分解过程,确定了其结晶水的数目为7个,并通过Kay West方法确定了化合物热分解反应的活化能(E)、反应级数(n)和频率因子(A)等动... 详细信息

合成了复盐硫酸锰铵,利用热重分析法(TG)、差示扫描量热法(DSC)、微商热重法(DTG)研究了它在氮气气氛中的热分解过程,确定了其结晶水的数目为7个,并通过Kay West方法确定了化合物热分解反应的活化能(E)、反应级数(n)和频率因子(A)等动力学参数,用线性拟合的方法得到其相关系数均大于0.99,具有良好的动力学一致性,并运用等转化率法对热分析动力学参数进行了验证.

关键词：硫酸锰铵结晶水热分析动力学参数测定热重分析法差示扫描量热法微商热重法

GTL or LNG:Which is the best way to monetize "stranded" natural gas?

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Petroleum science 2008年第4期5卷 388-394页

作者： Dong Lichun Wei Shun＇an Tan Shiyu Zhang Hongjing School of chemistry and Chemical engineering Chongqing University Chongqing 400044 China

A large portion of world＇s natural gas reserves are ＂stranded＂ resources, the drive to monetize these resources leads to the development of gas-to-liquids （GTL） and liquefied natural gas （LNG） technologies. LNG has the advantage of having been developed for the past 40 years and having an excellent safety record. GTL on the other hand is another option with substantial benefits, but its development stage and commercial viability are far behind LNG. This paper presents a techno-economic comparison of GTL with LNG, including technical development, plant efficiency, market potential for the products, and capital cost for the infrastructure. The aim is to give an overall view on both LNG and GTL and provide a perspective on the profitability of these two technologies.

关键词： GTL (gas to liquids) LNG (liquefied natural gas) "stranded" natural gas

Design of a ring type low voltage ultrasonic micro-motor

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Design of a ring type low voltage ultrasonic micro-motor

AN ENDPOINT ESTIMATE FOR THE COMMUTATORS OF SINGULAR INTEGRALS WITH NON DOUBLING MEASURES

2.11年全国压电和声波理论及器件应用研讨会

作者： Cun-yue LU~* Wen-yuan PI department of Instrument science & {2.,Shanghai Jiaotong {3.,Shanghai 2.02.0

＜正＞In the paper,a novel micro linear ultrasonic motor is designed using screw-driven *** pasted on a ring type stator are designed as vibration excitation components.A travelling wave can be excited along the circu... 详细信息

关键词： Ultrasonic motor Micro-motor Piezocrystal

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Analysis in Theory and Applications 2003年第1期19卷 29-36页

作者： Hu Guoen and Jiao Yulan (university of Information engineering, China) department of Applied Mathematics University of Information Engineering Zhengzhou P. R. China School of science University of Information Engineering Zhengzhou P. R. China

A weak type endpoint estimate is established for commutators of the Calderon-Zygmund singular integrals on Rd with non doubling measures.

关键词： singular integral commutator,doubling measure

THREE-DIMENSIONAL SIMULATION OF MEANDERING RIVER BASED ON 3.D RNG k-ε TURBULENCE MODEL

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Journal of Hydrodynamics 2008年第4期20卷 448-455页

作者： ZHANG Ming-liang SHEN Yong-ming State Key Laboratory of Coastal and Offshore engineering Dalian University of Technology Dalian 116024China department of Civil and Structural engineering The Hong Kong Polytechnic University Hong Kong China

A 3.D numerical model for calculating flow in non-curvilinear coordinates was established in this article. The flow was simulated by solving the full Reynolds-averaged Navier-Stokes equations with the RNG κ-ε turbulence model. In the horizontal x-y-plane, a boundary-fitted curvilinear co-ordinate system was adopted, while in the vertical direction, a σ co-ordinate transformation was used to represent the free surface and bed topography. The water level was determined by solving the 2.D Poisson equation derived from 2.D depth averaged momentum equations. The finite-volume method was used to discretize the equations and the SIMPLEC algorithm was applied to acquire the coupling of velocity and pressure. This model was applied to simulate the meandering channels and natural rivers, and the water levels and the velocities for all sections were given. By contrasting and analyzing, the agreement with measurements is generally good. The feasibility studies of simulating flow of the natural fiver have been conducted to demonstrate its applicability to hydraulic engineering research.

关键词： non-orthogonal curvilinear coordinates RNG κ-ε turbulence model 2.D Poisson equation SIMPLEC algorithm depth averaged equation

季节性冰冻地区路基内温度场、湿度场耦合计算

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同济大学学报（自然科学版） 2002年第3期30卷 296-301页

作者：侯芸田波邴文山同济大学道路与交通工程系上海200092 交通部公路科学研究所北京100088 哈尔滨工业大学道路与交通工程系黑龙江哈尔滨150090

根据傅里叶定律和水分传导定律导出了路面结构体系温度场和湿度场耦合作用的二维计算模型 ,采用有限差分法进行求解 .通过计算结果和试验结果的对比 ,证明计算模型是可行的。

关键词：路基土基冻胀温度场湿度场有限差分计算季节性冰冻地区耦合作用

Phase Diagram of RbI-SmI2.Binary System and Structural Investigation of RbSm2.5 and RbSmI3

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Chemical Research in Chinese Universities 1988年第3期 62-69页

作者： Zhao Xinhua,Wang Shihua Jiang Shengbang(department of chemistry, Beijing Normal {2., Beijing)

The RbI-SmI2., binary system was studied with DTA and X-ray powder diffraction. Its phase diagram shows that it has a congruently melting compound,RbSm2.5 , with a melting point 52.℃; an incongru-ently melting compound, Rb2.mI4 , with an inconsruently point 467℃ and two compounds, RbSmI3. and Rb3.mI5, being decomposed at 43.℃ and 460℃, respectively. The measured structure of RbSm2.5 shows that it is isomorphous with NH4 Pb2.Cl5 space group P2./c, a=10 . 063.3.A, b=9.003.3.A. c =14 . 2.2.5)A°,β=90.2.(3.°;z = 4, MVx= 1 94 . 3.m3.mol;D=5.2.5g/cm3.and Do =5. 3.4g/cm3.(2.. 0℃).The structural, investigation ofRbSmI3.shows that it belongs to the orthorhombic system with a = 15.914(6)A, b=8.898(3.A c =12.193.5)A; Z=8, MVx =13..0cm3.mol, Dx =4 . 743./cm3.Do = 4.597g/cm3.2..0℃).

关键词： Binary system X-ray powder diffraction