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Study on the Temperature Filed of Wet Dual Clutch Transmission during Starting Process Xi Liu, Xiusheng Chenga, Yan Li, Qiang Gu, Yinshu Wang College of Automotive Engineering, Jilin University, Changchun, China axiusheng_cheng@yahoo.com.cn Keywords: Dual clutch transmission, Wet clutch, Matlab, Temperature field, Numerical simulation Abstract.
Jerk is one of the key evaluating indicators of starting quality, which is quantized riding comfort.
Fig. 1 Clutch pressure increment graph in starting process The slipping work is another key evaluating indicator of starting quality.
l The physical parameters don’t change while coupling, for the material of the friction pairs are even.

A Study of Modeling Mobile ad-hoc networks Attacks Juan Chen 1,a ,Hong Shan2,b ,Tao ma2,a 1Xin Xing Technology Institute, Hefei, China 2Electronic Engineering Institute, Hefei, China a chenbbm@sina.com, bHshan222@sina.com Keywords: Mobile ad-hoc networks, attack modeling, attack trees Abstract.
In contrast a high costs attack would include “Brute-Force” cryptographic key attacks which fall into category 5 (duration: Hundreds of hours and more, costs = 1).
An example of a low probability attack would be the random discovery of cryptographic key material (category 1, probability p=0.1).

Application of RFPA 2D in Sublevel Caving Mining Extra-thick Coal Seams Hua NAN 1,a , Tao XU 2,b , Zhidong WEI 3,c 1 School of Energy Science and Technology, Henan Polytechnic University, Jiaozuo 454000 China 2 Research Center for Numerical Tests on Material Failure, Dalian University, Dalian 116622 China 3 School of Energy Science and Technology, Henan Polytechnic University, Jiaozuo 454000 China a nanhua@hpu.edu.cn, bxukyle@163.com, cweizhd@hpu.edu.cn, Key words: numerical simulation test; stress surrounding; parameters' selection; failure of top coal; extra-thick coal seams Abstract: On the basis of suitable arrangement for the special stress surrounding and parameters selection, Realistic Failure Process Analysis 2-D (RFPA 2D ) numerical simulation of extra-thick coal seams' displacement and failure is carried out.
Introduction Sublevel caving mining technology is a new promising mining technology presently, and the key problem of this technology is whether the top coal can be fully fractured or not[1-3].
[4] Mengtao ZHANG.: Journal of Rock Mechanics and Engineering Vol. 6(3) (1987) p.197

Study on Pt-SnO2/C electrode Prepared by different content of Nafion for new direct ethanol fuel cells Hongjun Ni1,a, Cancan Lv1,b, Xuhong Wang1,c,Yu Zhu1,d,Mingyu Huang1,e 1School of Mechanical Engineering, Nantong University, No.9 Seyuan Road, Nantong, Jiangsu 226019, P.R.
Introduction Membrane electrode assembly (MEA) is one of the key components of proton exchange membrane fuel cells (PEMFCs).
The chronoamperometric technique is an effective method to evaluate the electrocatalytic activity and stability of electrode material.
Acknowledgements The authors wish to thank the following project for financial support:(1) Natural Science major basic research projects of Jiangsu Higher Education Institutions (08KJA480001); (2)Applied Research Plan Projects of Nantong City (No.K2009007); Nantong City Key Laboratory of Fuel Cell (No.

Material Heavy oil and geological water used in the experiments are collected from the Chengbei (Bohai, China) oilfield. 1.2.
By lowering the activation energy of catalyst activation key reaction to accelerate reaction rate, the component of heavy oil is deep degradation.
The active ingredients of oil-soluble catalyst can attack small segment of asphaltene molecular skeleton, thereby breaking macromolecules to small molecules generated, upgrading the role of asphaltenes(fig 4). 2.4 Catalytic modification with hydrogen donor Water as a key nucleophilic component can provide an amount of hydrogen ions, and then attack α carbon, to split C-S bond, and open cyclic structure, releasing H2S and CO, through water gas reaction to convert CO2 and H2.
Chemical Reaction Engineering and Technology, 2005, 21: 463-467

Experimental Study on Bending Behavior of Cold-rolled Deformed Steel Bars Reinforced Concrete Slabs Chen Qingjun 1,2,a, He An 1,b, Pan Guangbin 1,c, Cai Jian 1,2,d, Li Jun 3,e and Yang Chun 1,2,f 1School of Civil Engineering and Transportation, South China University of Technology, China 2State Key Laboratory of Subtropical Building Science, Guangzhou, China 3The Architectural Design & Research Institute of Guangdong Province, Guangzhou, China aqjchen@scut.edu.cn (corresponding author), bheann@sina.com, cpangb5655@126.com, dcvjcai@scut.edu.cn,e653102294@qq.com,fchyang@scut.edu.cn Keywords: cold-rolled deformed bar, flexural member, minimum reinforcement ratio, experiment Abstract.
The details of the specimens and the material properties are listed from Table 1~3.
Acknowledgement The Project was supported by Guangdong Provincial Natural Science Foundation of China (Grant No. 9451064101002910) and the Fundamental Research Funds for the Central Universities (Grant No. 2011ZM0112, 2009ZM0230) and was supported by State Key Lab of Subtropical Building Science (No. 2011ZC25, 2011ZC28).

Materials Science and Engineering: A 658 (2016): 472-483
Journal of materials processing technology 228 (2016): 11-24
Journal of Materials Processing Technology 228 (2016): 125-136
Journal of materials engineering and performance 21.11 (2012): 2244-2254
Journal of Manufacturing and Materials Processing 6.1 (2022): 11

Synthesis, structure and properties of a novel metal-organic coordination polymer, [Zn(NH3)2(BDC)]n Ning-ning Wu 1,a, Can-xiong Guo 1,b,*,Gui-an Wu 1,c, Zhao Cai 1,d, and Wan-hong He 1,e 1State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China * Correspondening author: guocx@mail.buct.edu.cn; guo_cax@163.com Keywords: metal-organic coordination polymer, ammonia, terephthalic acid, volatilization, reversion Abstract.
Introduction Metal-organic coordination polymers (MOCPs) are a new type crystalline materials which are constructed by combining metal ions and organic ligands with different topologies.
The synthesis of these materials typically depends on the coordination between metal ion and the organic linkers, and other factors such as solvent and synthesis methods.
Experimental methods Materials and physical measurements.
Hupp, Metal-organic framework materials as catalysts, Chem.

A Reference Research on the Local Traditional Garden Art for the Regional Landscape Ling Li Jia1, a, Dong Ping Zhao2,b 1 School of Architecture, Southwest Jiaotong University, Chengdu Sichuan 610031, China 2 China Railway Eryuan Engineering Group Co.
Region landscape should accept new material and new technologies, at the same time.
Modern landscape design neglects the regional and cultural difference, only pursues the graceful composition of geometry, and uses large numbers of expensive materials, it looks like be pomposity, because of its lack of the building emotional situation, and these landscapes can not cause the resonance of experiencer.
Soil, stone and other material can be used if they can be got conveniently, and the technology also is unconstrained.
Acknowledgements The author would like to thanks for the financial support by the humanities and social science key research base of Sichuan education department.

Effect of La and La+Sr on Structure and Properties of ZL101A MI Guofa a , WANG Ying b and WEN Tao c School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo, 454001 China a peter@hpu.edu.cn, b lxcwy@hpu.edu.cn, cwentaoyouxiang@163.com Keywords: ZL101A alloy; modification; structure; property Abstract.
Experimental Materials.
Rare Earth Information (2003), p. 18(In Chinese) [7] Thompson S, Cockcroft S L and Wells M A.Materials Science and Technology (2004), p. 194 [8] S.
Shahri.Journal of Materials Science (2004), p. 2023 [9] E.
Materials science forum(2000), p. 349 [12]Yang Jun-jun, et al.