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IEEE International Nanoelectronics Conference (INEC)

作者： Feng Xu Shichun Mu Mu Pan State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan China

ISBN: (纸本)9781424435432;9781424435449

We prepared a novel hybrid membrane by doping recast Nafion @ membrane with SiO 2 -CNTs composites where carbon nanotubes (CNTs) were decorated with SiO 2 nano-particles. SiO 2 -CNTs were prepared via sol-gel method, and then mixed with nafion resin through sonication. Hydrophilic SiO 2 nano-particles were chosed to increase the water uptake of hybrid membrane, and the CNTs were chosed to improve the mechanical property of hybrid membrane. A series of tests show that water uptake and thermal performance¿two key performance of proton exchange membrane (PEM) are improved.

关键词： Biomembranes Fuel cells Protons Carbon nanotubes Resins Testing Temperature dependence Humidity Laboratories Composite materials

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Annealing effects on structure and mechanical properties of CoCrFeNiTiAlx high-entropy alloys

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IOP Conference Series: Materials Science and Engineering 2011年第1期20卷

作者： K B Zhang Z Y Fu J Y Zhang W M Wang S W Lee K Niihara State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China Department of Materials Engineering SunMoon University Asan ChungNam 336-708 South Korea Extreme Energy-Density Research Institute Nagaoka University of Technology 1603-1 Nagaoka Niigata 940-2188 Japan

Novel CoCrFeNiTiAlx(x:molar ratio, other elements are equimolar) high-entropy alloys were prepared by vacuum arc melting and these alloys were subsequently annealed at 1000 °C for 2 h. The annealing effects on structure and mechanical properties were investigated. Compared with the as-cast alloys, there are many complex intermetallic phases precipitated from the solid solution matrix in the as-annealed alloys with Al content lower than Al1.0. Only simple BCC solid solution structure appears in the as-annealed Al1.5 and Al2.0 alloys. This kind of alloys exhibit high resistance to anneal softening. Most as-annealed alloys possess even higher Visker hardness than the as-cast ones. The as-annealed Al0.5 alloys shows the highest compressive strength while the Al0 alloy exhibits the best ductility, which is about 2.6 GPa and 13%, respectively. The CoCrFeNiTiAlx high-entropy alloys possess integrated high temperature mechanical property as well.

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Photocatalytic decompositions of gaseous HCHO over Ag/TiO2 nanotube arrays

Photocatalytic decompositions of gaseous HCHO over Ag/TiO2 n...

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IEEE International Nanoelectronics Conference (INEC)

作者： Jingjing Du Wen Chen Chunxia Zhao Ying Dai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing and School of Materials Science and Engineering Wuhan University of Technology Wuhan China

ISBN: (纸本)9781424435432;9781424435449

Highly ordered TiO 2 nanotube arrays prepared by electrochemical anodization gets considerable interest as a practical air purifier, since the nanotube arrays can form a TiO 2 film with a porous surface and straight gas diffusion channel. Here, we investigate photocatalytic decompositions of HCHO over TiO 2 and Ag/TiO 2 nanotube arrays. Compared with the pure TiO 2 nanotube arrays with similar thickness and geometric area, the results showed that Ag loading TiO 2 nanotube arrays within a certain range could significantly improve the degradation rate of HCHO, the main product of HCHO degradation was detected to be CO 2 .

关键词： Degradation Titanium Oxidation Materials science and technology Hafnium Temperature Electrodes Annealing Nanoparticles Inductors

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Structural Analysis and Optimal Design for Water Tube Panel in an Alkali Recovery Boiler

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Engineering（科研） 2010年第5期2卷 353-359页

作者： Zaili Zhao Jinsheng Xiao Ying Wu Xiaojun Zhang Zhiming Wang School of Energy and Power Engineering Wuhan University of Technology School of Automobile Engineering Wuhan University of Technology State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology W

Alkali recovery aiming at recovering NaOH is the best available technology in China's pulp and paper industry;an alkali recovery boiler is a popular one among all alkali recovery units. For the purpose of designing the most reasonable tube-panel of an evaporator in a 1500 t/d alkali recovery boiler, a total of 8 kinds of cases are put forward for finite element analysis. The modeling, meshing and calculation are carried out for each case. The stress values and their distribution rules are revealed in this paper. The slotting size for the water tubes panel is analyzed by using the optimum design module of ANSYS. After all cases are compared with each other, the optimal one is developed and exemplified in conclusion.

关键词： Alkali Recovery Boiler Water Tubes Panel Finite Element Thermal Stress Optimum Design

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Study on Impact Factor of Sci-Tech Journal in China Using Genetic Programming

Study on Impact Factor of Sci-Tech Journal in China Using Ge...

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International Conference on Computational Intelligence and Software Engineering (CiSE)

作者： Yongxiang Zhao Meifang Li State Key Laboratory of Advanced Technology of Materials Synthesis and Processing Wuhan University of Technology Wuhan China School of Management Wuhan University of Technology Wuhan China

In this paper, we establish nonlinear GP model between impact factor of sci-tech journal and related indexes based on genetic programming approach. The proposed GP model utilizes average authors, number of district, number of affiliation, international paper ratio and foundation paper ratio as the inputs, and uses impact factor as the output. The journals data from Chinese S&T Journal Citation Reports in 2005 are used as experimental data. The experimental results show that impact factor is mainly related to average authors and foundation paper ratio, and nearly has nothing to do with number of district, number of affiliation and international paper ratio. Therefore, increasing the average authors and foundation paper ratio of sci-tech journal will help to promote the impact factor of journal and improve the quality of journal to some extent.

关键词： Genetic programming Indexes Training Servers Data models Analytical models

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An Indoor Positioning Algorithm Based on Path Tracking Assistance

An Indoor Positioning Algorithm Based on Path Tracking Assis...

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International Conference on Computational Intelligence and Software Engineering (CiSE)

In real life, people always move according to a certain paths, for example, walking from one side of corridor to the other side of it, but not passing through the wall, and so on. Therefore, all kinds of possible paths could be predefined, then the indoor positioning systems can make full use of these paths to further improve the positioning accuracy. In this paper, an indoor positioning algorithm based on path tracking assistance is presented which makes the most of path information in indoor environment to optimize the searched subspaces of positioning algorithm. Experimental results demonstrated that the proposed path tracking assistance algorithm can improve the 73% accuracy in 3 meters of traditional kNN algorithm to 92% in a typical office building testbed when the subspaces are defined rationally.

关键词： Accuracy Buildings Radar tracking Wireless LAN Legged locomotion Tracking Indoor environments

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Nanowire-Based Electrodes with Improved Electric Conductivity

Nanowire-Based Electrodes with Improved Electric Conductivit...

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ICAM新能源材料中的物理国际研讨会

作者： Lin Xu Liqiang Mai Bin Hu Xu Xu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 China Department of Chemistry and Chemical Biology Harvard University Cambridge Massachusetts 02138 USA

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Inside Cover: Biofuel cells Based on the Immobilization of Photosynthetically Active Bioentities (ChemCatChem 3/2011)

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ChemCatChem 2011年第3期3卷 422-422页

作者： Dr. Christophe F. Meunier Dr. Xiao-Yu Yang Dr. Joanna C. Rooke Prof. Bao-Lian Su Laboratory of Inorganic Materials Chemistry (CMI) The University of Namur (FUNDP) 61 rue de Bruxelles B-5000 Namur (Belgium) Fax: (+32) 81-72-54-14 F.N.R.S. “ Chargé de Recherches ” Position Fonds National de la Recherche Scientifique 5 rue d'Egmont B-1050 Bruxelles (Belgium) State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology 122 Luoshi Road Wuhan 430070 (China)

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Nanoparticles: Well Shaped Mn3O4Nano-octahedra with Anomalous Magnetic Behavior and Enhanced Photodecomposition Properties (Small 4/2011)

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Small 2011年第4期7卷

作者： Yu Li Haiyan Tan Xiao-Yu Yang Bart Goris Jo Verbeeck Sara Bals Pierre Colson Rudi Cloots Gustaaf Van Tendeloo Bao-Lian Su State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology 122 Luoshi Road 430070 Wuhan Hubei China Laboratory of Inorganic Materials Chemistry (CMI) The University of Namur (FUNDP) 61 rue de Bruxelles B-5000 Namur Belgium EMAT University of Antwerp Groenenborgerlaan 171 B-2020 Antwerpen Belgium Group of Research in Energy and Environment from Materials (GreenMat) Chemistry Department B6 University of Liege B-4000 Liege (Sart-Tilman) Belgium

Very uniform and well shaped Mn 3 O 4 nano-octahedra are synthesized using a simple hydrothermal method under the help of polyethylene glycol (PEG200) as a reductant and shape-directing agent. The nano-octahedra formation mechanism is monitored. The shape and crystal orientation of the nanoparticles is reconstructed by scanning electron microscopy and electron tomography, which reveals that the nano-octahedra only selectively expose {101} facets at the external surfaces. The magnetic testing demonstrates that the Mn 3 O 4 nano-octahedra exhibit anomalous magnetic properties: the Mn 3 O 4 nano-octahedra around 150 nm show a similar Curie temperature and blocking temperature to Mn 3 O 4 nanoparticles with 10 nm size because of the vertical axis of [001] plane and the exposed {101} facets. With these Mn 3 O 4 nano-octahedra as a catalyst, the photodecomposition of rhodamine B is evaluated and it is found that the photodecomposition activity of Mn 3 O 4 nano-octahedra is much superior to that of commercial Mn 3 O 4 powders. The anomalous magnetic properties and high superior photodecomposition activity of well shaped Mn 3 O 4 nano-octahedra should be related to the special shape of the nanoparticles and the abundantly exposed {101} facets at the external surfaces. Therefore, the shape preference can largely broaden the application of the Mn 3 O 4 nano-octahedra.

关键词： magnetic properties Mn3O4 nano-octahedra photodecomposition rhodamine B tomography

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Quick preparation and thermal transport properties of nanostructured β-FeSi_2 bulk material

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Chinese Physics B 2009年第1期18卷 287-292页

作者：李涵唐新峰曹卫强张清杰 State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology

This paper reports that the nanostructured β-FeSi2 bulk materials are prepared by a new synthesis process by combining melt spinning （MS） and subsequent spark plasma sintering （SPS）. It investigates the influence of linear speed of the rolling copper wheel, injection pressure and SPS regime on microstructure and phase composition of the rapidly solidified ribbons after MS and bulk production respectively, and discusses the effects of the microstructure on thermal transport properties. There are two crystalline phases （α-Fe2Si5 and ε-FeSi） in the rapidly solidified ribbons; the crystal grains become smaller when the cooling rate increases （the 20 nm minimum crystal of ε-FeSi is obtained）. Having been sintered for 1 min above 1123K and annealed for 5min at 923K, the single-phase nanostructured β- FeSi2 bulk materials with 200-500 nm grain size and 98% relative density are obtained. The microstructure of β-FeSi2 has great effect on thermal transport properties. With decreasing sintering temperature, the grain size decreases, the thermal conductivity of β-FeSi2 is reduced remarkably. The thermal conductivity of β-FeSi2 decreases notably （reduced 72% at room temperature） in comparison with the β-FeSi2 prepared by traditional casting method.

关键词： thermoelectric materials nanostructure thermal conductivity

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