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Oxygen Reduction Reaction Activity Improvement in Cu/PtPd Nanocatalyst Based on Core-Shell Structured through Electrochemical Synthesis on Porous Gas Diffusion Electrodes in Polymer Electrolyte Membrane Fuel Cells Maryam Yaldagard 1,2,a٭, Naser Seghatoleslami 1,b and Mohsen Jahanshahi2,c 1-Department of Chemical Engineering, Engineering Faculty, Ferdowsi University of Mashhad, POBox 91775-1111, Iran 2-Nanotechnology Research Institute, School of Chemical Engineering, Babol University of Technology, Iran am_yaldagard@yahoo.com, ma_ya371@stu-um.ac.ir, bslami@um,ac,ir, cmjahan@nit.ac.ir ٭.
The most interesting of these approaches is the synthesis of core-shell materials.
Experimental 2.1 Reagents and materials The used chemical reagents and materials with their respective suppliers are: H2PtCl6 (40 wt. % , sigma-Aldrich), PdCl2 (59 wt.
These four diffraction peaks appear slightly shifted toward higher 2θ values in the core-shell materials with respect to the corresponding peaks in a Pt/C/GDL electrode.
Goldbeck-Wood, Exploring Fuel Cell Cathode Materials: A High Throughput Calculation Approach, ECS Transactions, 25 (2009) 1335-1344

Hydroxy-terminated Poly(amidoamine) Dendrimers as Nanocarriers for the Delivery of Antioxidants Ji’an Bi1, a, Yanchao Li2, 3, b, Qianfen Zhuang2, c, Zhenhua Leng1, d, Hongying Jia2, e, Yang Liu2, f, Jianwei Zhou1, g and Libo Du2, h 1School of Chemistry and Materials Science, Guizhou Normal University, Guizhou, China 2State Key Laboratory for Structural Chemistry of Unstable Species, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China 3Laboratory of Molecular Iron Metabolism, College of Life Science, Hebei Normal University, Shijiazhuang, China a330121709@qq.com, blyc521vip@163.com, czhuangqf@iccas.ac.cn, d937812296@qq.com, ejiahy@iccas.ac.cn, fyliu@iccas.ac.cn, gjianweizhou_2000@yahoo.com, hdulibo@iccas.ac.cn [Submitted: April 3, 2013; revised: April 24, 2013; accepted: April 25, 2013] Keywords: nanoparticle, dendrimer, antioxidant, Vitamin E, oxidative stress, lipid peroxidation.
Experiment Materials.
Baker, Poly(amidoamine) dendrimer-based multifunctional engineered nanodevice for cancer therapy.

The set of the key module is used for the range of the checked water pollution source online monitor instrument.
The application of the system implementation The system has been applied in actual metrological verification after completion of testing with the standard material automatic sampling device of water pollution source online monitor instrument.
Author introduction: Sha Yuebing (1980- ), male, engineer, working department: Measurement Science Research Institute of Zhejiang province, address: Hangzhou City, Zhejiang province Tianmushan Road No. 222 Building No. 2 research direction: stoichiometric.

Analysis of Contact Pressure between Rolls under Non-symmetrical Roll Bending of UCM Cold Rolling Mill Xu Li 1, a , Dianhua Zhang 1, b , Pengfei Wang 1, c and Wenxue Zhang2, d 1 State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110004, China 2 Shanghai Baosight Software Co., Ltd, Shanghai 201203, China a fly2000lixu@163.com, b zdhua@mail.neu.edu.cn, c pengfei20021221@yahoo.cn, d shenandxue@163.com Keywords: Non-symmetrical roll bending, Roll wear, Pressure between rolls, Cold rolling Abstract.
Guo: Iron and Steel Engineer, Vol. 65(1988) No. 12, p. 45-54(in Chinese)
Tieu: Journal of Material Processing Technology, Vol. 140(2003) No. 1-3,p. 535-541

Introduction When calculating the stability of the retaining wall, there are two key issues to be solved: the total thrust and the point of the thrust.
Currently in engineering practice, the calculation of the dynamic active thrust acting on the rigid retaining wall is based on mainly the M-O seismic active earth pressure theory.
Derivation of equation Analytical model .The correlated assumptions in the derived process are followed: ① The seismic active earth pressure is generated by the triangular soil wedge which is a rigid body and has the same horizontal acceleration; ②There is no relative slipping among the various soil layers with the mode of the transition, so there’s no need for considering the shear stress among the soil layers, and this assumption is the same as literature’s[9]; ③ The retaining wall is rigid; ③ The material of the backfill is isotropic and homogeneous.
D: Journal of Geotechnical Engineering, 1982, 108(5):679-695
[14] Liqiang .Wang, Yuanzhan .Wang and Lihua .Chi: China Harbor Engineering,2007,5（151）：1-5.

A New Approach for the Detection of Kiwifruit Maturity by Electrical Impedance Technology Liao Qiang1,a,Su Lili1,b, Chen Lili1 1College of Mechanical Engineering Chongqing University, Chongqing P.R China 400044 ae-mail:lq922@163.com,be-mail: SLL9596@126.com Keywords:Electric Impedance,Kiwifruit maturity,Back propagation neural network Abstract:In this paper,an identification method of kiwifruit maturity was established by using electrochemical impedance technique ,which used the electrochemical workstation and home-made needle-shape three-electrode system.We did it by taking samples from eight kiwifruit of different maturity,and by optimizing the measuring position,perturbation amplitude,excitation frequency,and utilizing BP neural networks.In the experiment,the measurement position was in the South of equator,perturbation amplitude 10mv,characteristic frequency 158Hz, 501Hz, 926Hz respectively.It selected 80 samples as a test set to establish the BP neural network recognition model
Equipment and methods 2.1 The main experiment equipment Electrochemical workstation which is consisted of 1287 Electrochemical Interface and 1260 Impedance/Gain-Phase Analyzer of Solartron Metrology,computer,analysis software(ZPlot). 2.2 Material selection Postharvest kiwifruits were bought from Wal-Mart Supermarket on September 25th in 2012.The kiwifruits were harvested from Wei-Nan in Shan Xi at the same time.Choosing those that are size uniform,no damaged ones as samples.Samples were stored in room temperature().NACL(Concentration is 0.9%) 2.3 Electrode preparation The needle-shape electrode was actually a home-made three-electrode structure consisting of a stainless steel needle() working electrode,a stainless steel needle() counter electrode and a stainless steel needle() reference electrode.Then,the three electrodes is encapsulated to a lid whose diameter is 30mm;the distance from the pinpoint to the surface of the lid is 20mm;the distance between working electrode and counter
frequency band is from 100Hz to 1000Hz.In these measuring conditions,it is feasible to use electric impedance method for evaluating kiwifruit maturity. 3.6 Kiwifruit Maturity Recognition Model Basing on Artificial Neural Network[10] In this study,BP Neural Network Model is established to identify eight kiwifruit maturity,with the numbers 1 to 8 shows a different maturity respectively. ①　 Choosing training data set and testing data set.This study has 8 kinds of maturity,and each maturity has 3 characteristic parameters.We choose 10 samples for each maturity as training data,5 samples for each maturity as testing data,so training data set has 80 samples and testing data set has 40 samples ②　 In order to use the training function of Matlab Neural Network Toolbox effectively,it must preprocess the training data set and testing data set using premnmx function so as to quantify the parameters to [ -1,1 ],then as the input unit. ③　 In BP Neural Network,the number of hidden layers is the key
JOURNAL OF FOOD ENGINEERING,2012,112(3):218-226 [2] Lu Zhang,Michael J.McCarthy.Measurement and evaluation of tomato maturity using magnetic resonance imaging.
Biosystems Engineering,2004,87(1):119-123 [4] Nelson S O,Trabelsi S,Kays S J.Dielectric spectroscopy of honeydew melons from 10MHz to 118GHz for quality sensing.

Study on Real-time Image Capture Method for Apple Sorting System Jing Li1, Bo Wang1, Dongxing Zhang1, Bao Liu2 1 College of Engineering, China Agricultural University, Beijing 100083, China 2 School of Mechanics and Power Engineering, Henan Polytechnic University, Jiaozuo 454003, China Email of corresponding author: zhangdx@cau.edu.cn Keywords: Apple, Orientation, Image capture, Sorting Abstract.
Material and Method Tray Design for Apple Orientation.
Apple orientation is the key technology to guarantee stable movement posture for apple.
Destain: Journal of Food Engineering, Vol. 61(2004) No.1, pp. 83-89.

Stability of Gas Drainage Borehole Analysis on Rock Mechanics Parameters with Roadway of Complex Stress Tianjun Zhang1,a, Lei Zhang1,b , Hongyu Pan2,c, and Chao Zhang2,d 1 Xi'an University of Science and Technology, Faculty of Science, Shanxi, Xi'an, China 2 School of Energy Engineering, Xi’an University of Science and Technology, Xi’an, China atianjun_zhang@126.com, blei_zhang_xust@163.com, cpan05016@126.com, d83399527@qq.com Keywords: gas drainage; drainage borehole; FLAC; numerical simulation Abstract.
When, the material would occur shear failure, when, it would be the tensile fracture.
Key Technique of Safe Mining in Low Permeability and Methane-Rich Seam Group.
Chinese Journal of Rock Mechanics and Engineering. 2008; 27(7):1370-1379
Journal of Civil Architectural & Environmental Engineering. 2014; 36(3):37-42

An investigation of Strength and Deformation Behavior on Shale Ceramsite Concrete Shear Walls Weichao Chen1, 2, a, Weijun Yang 1, b,Tong Wang2,c 1Changsha University of Science and Technology, Hunan Changsha 410076，China 2Hunan Construction Engineering Group Corporation，Hunan Changsha 410004，China awlrwc@163.com,bmgbyrh@163.com,c16498055@qq.com Keywords: ceramsite concrete, shear wall, strength, deformation behavior, ductility.
The design parameters of specimens Specimen Length lw/mm Width bw/mm Height hw/mm Height to length hw/lw axial compression ratio Horizontal reinforcement  Vertical reinforcement Bar spacing Reinforcemet ratio% Bar spacing Reinforcement ratio% Lsw1 1000 120 1000 1.00 0.1 φ6.5@180 0.306 φ6.5@180 0.306 Lsw2 1000 120 1650 1.65 0.1 φ8.0@180 0.468 φ6.5@180 0.306 Lsw3 1000 120 1650 1.65 0.1 φ6.5@180 0.306 φ8.0@180 0.468 Lsw4 700 120 1650 2.36 0.1 φ6.5@180 0.306 φ8.0@180 0.468 Lsw5 700 120 1650 2.36 0.1 φ8.0@180 0.468 φ6.5@180 0.306 Material properties .Form the three 150×150×150mm concrete cubes of each specimen were tested in compression at 28 days.
Tables 4 indicate that the key factor of influence resisting moment is height-width ratio in the same condition, the greater height-width ratio, the less resisting moment.
Clarke, Blackie Academic & Professional, 1993 [5] Yizhou Zhuang: Journal of Zhejiang University (Engineering Science).Vol.34 (2000), P.325 (in Chinese) [6] Xuemin Tan, Minghua Guo, Fuming Wang: Journal of South China University of Technology (Natural Science).Vol.27 (1999), P. 67 (in Chinese) [7] Hejin Tao, Qingrong Yu, Xinya Shi: Journal of Building Structures.Vol.15 (1994), P.20 (in Chinese) [8] Cuilan Liu, Xueren Qi: Journal of Building Structures.
Papia: Engineering Structures .Vol.25 (2003), P.115 [10] Zhenghai Guo,Xudong Shao:Reinforced concrete theory and analysis.

Study on Karst Features and Its Influence on the Project of Wudongde Hydropower Station of Jinsha River Wang tuanle1 Ye shengsheng1 Hao wenzhong1, Liu chongping1 Changjiang Iinstitute of Survey,Planning,Design and Research, felix1971@163.com Key words: Wudongde hydropower station; Karst features; dry-hot canyon; influence on the project Abstract: Wudongde canyon where the hydropower station will be built is deeply cut by the river with the height of more than 800m.
The width is smaller than 0.5cm in general, the calcite, argillaceous and calciferous material filled in it in general.
Considering the above mentioned geological conditions, the whole project layout is that the power generating system have been planned near the river and diversion tunnels far away from the river. 4.2 Dam anti-seepage curtain According to the karst rock and no-karst rock distribution, the curtain line have been suggested by the geologist, at the same time the reliable seepage curtain ends have been found. 4.3 Rock mass properties The karst developing along the bedding planes, faults and joints etc, form karst fissures, karst holes, karst cave and pipes and so on, which have significantly affected the engineering properties of the rockmass.
(3) The karst developing along the bedding planes, faults and joints etc, form karst fissures, karst holes, karst caves and pipes and so on, which have significantly affected the engineering properties of the rockmass.
Water Resources and Hydropower karst engineering geology, China Water Power Press, 1994.10