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Journal of wuhan University of technology(materials {3.) 2006年第Z1期21卷 94-98页

作者：高英力 Key Laboratory for Silicate materials science and Engineering of (Ministry of Education) wuhan University of {3. Wuhan 430070 China

In functionally graded materials (FGM), the problem of interface stability caused by the volume deformation is commonly regarded as the key factor for its performance. Based on test results, in terms of finite element method (FEM) this paper analyzed problems in the shrinkage of functionally graded material interface of shield concrete segment, which was designed and produced by the principle of functionally graded materials. In the analysis model, the total shrinkage of concrete was converted into the thermal shrinkage by means of the method of 'Equivalent Temperature Difference'. consequently, the shrinkage stress of interface layer was calculated and compared with the bond strength of interface layer. The results indicated that the volume deformation of two-phase materials of functionally graded concrete (FGC) segment, which were the concrete cover and the concrete structure layer, showed better compatibility and the tension stress of interface layer, which was resulted from the shrinkage of concrete and calculated by ANSYS, was less than the bond strength of interface layer. Therefore, the interface stability of functionally graded concrete segment was good and the sliding deformation of interface layer would not generate.

关键词： shield segment functionally graded concrete shrinkage finite element analysis interface

Micro-plate magnetic chemiluminescence immunoassay and its applications in carcinoembryonic antigen analysis

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science china Chemistry 2010年第4期53卷 812-819页

作者： LI ZhiYong1, ZHANG QianYun2, ZHAO LiXia1, LI ZhenJia3. HU GuoMao3. LIN Jin-Ming2 & WANG Shan4 1State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental sciences, Chinese Academy of sciences, Beijing 100085, china 2Department of Chemistry, Tsinghua University, Beijing 100084, china 3.eijing Chemclin Biotech co., ltd., Beijing Academy of science and technology, Beijing 100094, china 4School of Chemistry and Chemical Engineering, Xianyang Normal college, Xianyang 712000, china 1. State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China2. Department of Chemistry Tsinghua University Beijing 100084 China3. Beijing Chemclin Biotech Co. Ltd. Beijing Academy of Science and Technology Beijing 100094 China4. School of Chemistry and Chemical Engineering of Xianyang Normal College Xianyang 712000 China

A micro-plate magnetic chemiluminescence immunoassay was developed for rapid and high throughput detection of carcinoembryonic antigens (CEA) in human sera. This method was based on a sandwich immunoreaction of fluorescein isothiocyanate (FITC)-labeled anti-CEA antibodies, CEA antigens, and horseradish peroxidase (HRP)-conjugated anti-CEA antibodies in mi- cro-plate. The immunomagnetic particles coated with anti-FITC antibodies were used as the solid phase for the immunoassay. The separation procedure was carried out by a magnetic plate adaptor and the luminol-hydrogen peroxide (H2O2)-HRP system was employed for the chemiluminescence detection. The proposed method combined the advantages of the micro-plate reactor and magnetic particle separation technology with the linear range of 5-250 ng mL·1. The detection limit of CEA was 0.61 ng mL·1. The coefficient of the variation was less than 7% and 13. for intra-assay and inter-assay precision, respectively. compared with the commercial micro-plate chemiluminescent kit, the proposed method showed a good correlation.

关键词： micro-plate magnetic chemiluminescence immunoassay carcinoembryonic antigen tumor marker

Synthesis and photoluminescence property of red phosphors LiEu_(1-x)Y_x(WO_4)_(0.5)(MoO_4)_(1.5) for white LED

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science china(Technological sciences) 2009年第7期52卷 1913-1918页

作者： XIE An, YUAN XiMing, WANG JuanJuan & WANG Feng Engineering Research Center of Nano-Mineral materials and Application, Ministry of Education, Faculty of materials science and Chemical Engineering,{3. University of Geosciences, wuhan 43.074,{3. 1. Engineering Research Center of Nano-Mineral materials and Application Ministry of Education Faculty of Materials Science and Chemical Engineering China University of Geosciences Wuhan 430074 China

A series of novel red phosphors LiEu1-xYx(WO4)0.5(MoO4)1.5 (x=0, 0.1, 0.2, 0.3. 0.4, 0.5, 0.6, 0.8) were synthesized by conventional solid state reaction method with the starting materials: WO3. MoO3. Eu2O3. Li2co3.and Y2O3. The spectrum and the crystal structure of the phosphors were characterized by F-4500 and XRD respectively. Meanwhile the effects of flux and Y3. concentration on the crystal structure and luminescent properties of the phosphors were investigated. The results showed that the optimal content of flux (WAlF3.WH3.O3.1/1) was 1 wt% and the optimal doping concentration of Y3. was 0.5 mol. The emission spectrum showed the most intense peak was located at 615 nm, which corresponds to the 5D0→7F2 transition of Eu3. and that Eu3. occupied the lattice site of noncentrosymmetric environment in the scheelite phases. The excitation spectrum displayed that these phosphors could be effectively excited by ultraviolet (UV) (3.6 nm) and blue (466 nm) light, nicely in correspondence with the widely ap- plied output wavelengths of ultraviolet or blue LED chips. The influence of flux on the luminescent properties of LiEu0.5Y0.5(WO4)0.5(MoO4)1.5 phosphor was analyzed. The XRD spectra indicated that the flux could help to crystallize the phosphor, and no other phases were formed except the tetragonal. When adding flux, the relative intensity of LiEu0.5Y0.5(WO4)0.5(MoO4)1.5 became much stronger and the average particle size of the phosphor decreased.

关键词： red emitting phosphor LiEu1-xYx(WO4)0.5(MoO4)1.5 flux white LED

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基岩内抗拔桩极限承载力的计算方法

岩土力学 2015年第S2期36卷 633-638页

作者：唐孟雄陈达广州市建筑科学研究院有限公司广东广州510440 广州市建筑科学研究院新技术开发中心有限公司广东广州510440

采用极限平衡法,利用幂函数形式的滑移面假设,考虑桩岩界面作用力影响,推导出等截面抗拔桩在单层地基中极限承载力的计算公式。以软岩抗拔桩侧摩阻力试验结果为依据,提出软岩抗拔桩幂函数滑移面参数N=0时破裂面接近实际形状,并将计算结... 详细信息

采用极限平衡法,利用幂函数形式的滑移面假设,考虑桩岩界面作用力影响,推导出等截面抗拔桩在单层地基中极限承载力的计算公式。以软岩抗拔桩侧摩阻力试验结果为依据,提出软岩抗拔桩幂函数滑移面参数N=0时破裂面接近实际形状,并将计算结果与试验结果对比,验证了理论计算模型与假设的准确性。以理论模型为基础,提出对于软岩抗拔桩,桩岩界面作用力参数1c、岩石界面摩擦角δ可分别取岩石黏聚力c和内摩擦角?参数的0.7~0.8倍折减,分析了软岩抗拔桩极限承载力与软岩?、c的关系,发现抗拔桩极限承载力随着软岩摩擦角?、软岩黏聚力c增加而增加,软岩黏聚力对抗拔桩极限承载力影响更大。

关键词：基岩抗拔桩幂函数破裂面假设桩岩界面作用力

The Microstructure Mechanical Property Characteristic of 1Cr17/9Cr18MoV Multilayered Plates

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Journal of Iron and Steel Research International 2011年第S1期18卷 933-935页

作者： XIE Guo-liang 1,WANG Yan-lin 2,LIU Jing 1,HAN Jing-tao 1,GAO Gang 1 (1.School of materials science and Engineering,University of science and {3. Beijing,Beijing 100083.china 2.Fangda Special Steel {3. co.,ltd,Nanchang 3.0012,china) Univ Sci & Technol Beijing Sch Mat Sci & Engn Beijing 100083 Peoples R China Fangda Special Steel Technol co ltd Nanchang 330012 Peoples R China

A multilayered plate,containing two different steel,1Cr17 and 9Cr18MoV are *** microstructures of both materials and the transition zone of interfaces are investigated by SEM and *** point bending tests are employed to determine its mechanical *** multilayered composite shows a different mechanical property:a much lager bending defection than that of 9Cr18MoV material and a much higher strength than that of 1Cr17 material.

关键词： multilayered plate 1Cr17/9Cr18MoV microstructures mechanical property

controlled Preparation of Monodisperse coFe_2O_4 Nanoparticles by a Facile Method

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Journal of wuhan University of technology(materials {3.) 2011年第2期26卷 258-262页

作者：王海 Key Laboratory of Fiber Optic Sensing technology and Information Processing of Ministry of Education Wuhan University of Technology

coFe2O4 nanoparticles （NPs） were synthesized by coprecipitation method using FeCl3.6H2O and coCl2·6H2O as *** synthesized conditions were optimized,such as added means of precipitator,quantity of precipitator,the mol ratio of Fe 3. to co2＋,reaction temperature and pH *** synthesized material was characterized by XRD,TEM,FTIR,EDS,Raman and its magnetic properties were studied by *** experimental results confirm that the sample is cubic spinel structure coFe2O4 with a narrow size distribution and a good dispersion ***2O4 NPs with well-controlled shape and size was obtained at 70℃.The magnetic properties indicate superparamagnetic behavior and good saturated magnetization.

关键词： coFe2O4 nanoparticles coprecipitation method monodispersity superparamagnetism

Study on Environmental Multi-parameter Sensor Based on MEMS

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稀有金属材料与工程 2006年第S3期 377-380页

作者： Hongquan Zhang~(1,3. Tong Zhang~2 Likai Sun~3.Yunbo Shi~3.Jianying Guo~1 (1.Harbin University of science and technology,Harbin 150080,china) (2.Automobile Electronic Engineering technology Research and development Center,Harbin 150001,china) (3.Northeast Transducer technology Research Institute,Harbin 150001,china)

A new membrane type Al2O3.icromachining material is *** develop an environmental multi-parameter detection micro-system,which implements the detection to temperature,humidity,wind speed,and *** test results illustrate that the heat-release unit in micro-system intercross greatly affects other sensing units on the *** study the method of etching process,which formed cavity to reduce the heat exchange efficiency and decrease temperature intercross effect.

关键词： Al2O3.membrane sensing unit environmental multi-parameter microsystem

Mechanism of Calcined Phosphogypsum for the Volume Change of Blended Cement

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Journal of wuhan University of technology(materials {3.) 2006年第Z1期21卷 147-151页

作者：杨志明 Guangxi Building materials Scientific Research and Design Institute Nanning 53.022 China

The paper describes an investigation into the volume change of cement mortar specimen at the three kinds of different curing schedules including 20℃and 5% Na2SO4 solution curing, tap water standard curing, 50% RH curing for 90 days. The testing results of hydration heat, chemical shrinking and XRD prove that calcined phosphogypsum has evident excitation effect on the activity of high calcium ash and steel slag. Simultaneously, calcined phosphogypsum has the function of decreasing volume shrinkage to blended cement possessing steel slag and high calcium ash. In sulfate curing, calcined phosphogypsum can avoid the phenomenon of protrude apex of the blended cement.

关键词： calcined phosphogypsum steel slag high calcium fly ash volume change

Lost Foam Casting in china

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china Foundry 2006年第2期3卷 134-136页

作者： YE Sheng-ping,WU Zhi-chao (School of material science and Engineering, Huazhong University of science and {3., wuhan 43.074, P. R. china) School of material science and Engineering Huazhong University of Science and Technology Wuhan 430074 P. R. China

1. Lost Foam Casting committee of Foundry Institution of Chinese Mechanical Engineering Society (FICMES)From the beginning of the 1990s, china entered a research and expansion climax in lost foam casting technology re... 详细信息

关键词： Lost Foam Casting in china line than co

FT-IR Spectroscopic Investigation of co-adsorption of Acetonitrile and co on Fresh Mo_2C/Al_2O_3.Catalyst

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china Petroleum Processing & Petrochemical technology 2009年第4期11卷 59-61页

作者： Zhang Jing~1 Wu Weicheng~2 Jin Ziming~1 (1.School of Chemistry and materials science,Liaoning University of Petroleum & Chemical technology,Fushun 113.01 2.Liaoning Academy of Nanomaterials development co.ltd.) School of Chemistry and materials science Liaoning University of Petroleum and Chemical Technology Fushun 113001 China Liaoning Academy of Nanomaterials development co. ltd. China

The adsorption of acetonitrile and its co-adsorption with co on fresh Mo_2C/Al_2O_3.catalyst have been studied by insitu FT-IR *** adsorbed CH_3.N and CH_3.H_2NH_2 were formed after CH_3.N adsorption on the Mo_2C/ Al_2O_3.*** appearance of a strong band at 1578 cm^(-1) indicates that CH_3.N was reactive with hydrogen on the Mo_2C/Al_2O_3.catalyst.

关键词： Mo_2C/Al_2O_3.catalyst FT-IR spectroscopy co acctonitrile