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The development status of bridge without expansion joint Fan Xiuying1,a, Zhou Yitang1,b, Li Luoke 1,c, Zhang Ting 1,d 1Department of Civil Engineering, Kunming University of Science and Technology, Kunming, Yunnan, 650500, China a316642430@qq.com, bytzhou@yahoo.cn,cllk217@126.com,dzhangting52683328@126.com Keywords: jointless bridges; technical difficulties; factors; development status Abstract: This paper introduces the concept of jointless bridge, classification, characteristics and use of the existing problems, and seamless bridge between home and abroad in the course of development and the current situation, Summary analysis of its technical difficulties and influencing factors.
At the same time, whether the destruction of soil, or impact to the road, is also concerned with the stiffness of pavement construction. 4) Determined deformation of the beam and temperature change, the earth pressure of beam-end concern with concrete shrinkage and creep, but materials’ thermal expansion coefficient, effective temperature difference, temperature stress, The water cement ratio of concrete, slump constant, the proportion of fine aggregate concrete, relative humidity, The loading age of the concrete, loaded time and the strength of concrete are difficult to accurately calculate and determine.
Development of jointless bridge [J], Journal of Fuzhou University, 2001,(2):71-75.
(In Chinese) [3] Xiaoqin Jin, Xudong Shao, The integral study and application of non expansion joint of bridge [J], Journal of Chongqing Jiao tong University. 2002,21(3): 7-10

Research on Electronic Coin Recognition System Based on STC89C52 Wang Ting1, Wang Hao2 1School of Computer Science, Baicheng Normal University, Baicheng (13700), Jilin 2 School of Economics and Management, Baicheng Normal University，Baicheng (13700), Jilin loveting1982@163.com Keywords: Recognition of Coins; STC89C52; Photoelectric Switch; Strain Sensor Abstract: STC89C52 single-chip microcomputer is used as control core of the system, and characteristics of photoelectric switch is used to design a scheme for detection of face value of coins based on different sizes of coins.
Some characteristics such as big difference in materials, multiple types, many versions and big difference in minting parameters for various versions of coins have higher requirements on recognition system for face value of coins.[2] Meanwhile, there are a large amount of counterfeit coins and game coins, so identification of genuine and counterfeit coins becomes an urgent problem to be solved.
Journal of Henan Polytechnic University, 2010, 29 (2): 229-232
Chinese Journal of Sensors and Actuators, 2004 (4): 693- 695

Materials and Methods Bacterial strain and cultural conditions.
Acknowledgements This works was supported by the National Natural Science Foundation of China (No. 21207021).
Journal of Bioscience and Bioengineering, Vol.101(2006), p. 157 [7]Nkashima, T., Y.
Journal of Photochemistry and Photobiology B: Biology.Vol. 106(2012), p. 18

China Saf ety Science Journal 2005,15( 2) :8-101 [2] WANG Hong- de, MENG Xiang-mei, in :Study on GIS-based visual management system of urban hazardous materials transportation , Journal of Safety and Environment. 2012.12(3):200-203 [3] THOMSON B J.

Application of Equipartition of Entropy Production Principle in Plate Heat Exchanges with Different Corrugation Angles Chunsheng Guoa, Wenjing Dub, Lin Chengc Institute of Thermal Science and Technology, Shan Dong University, Jingshi road No 17923, 250061 Jinan city, Shandong province, China acsguo83@gmail.com, bwjdu@sdu.edu.cn, ccheng@sdu.edu.cn Keywords: plate heat exchangers; numerical simulation; heat transfer; resistance; entropy.
The boundary conditions and material properties of the geometry were specified.
The material present is defined as a fluid.
N., and Karsli, S., 2001, “Performance evaluation criteria for heat exchangers based on second law analysis,” Exergy, an International Journal, 1, pp. 78-294
G., 2002, “Theoretical analysis and experimental confirmation of the uniformity principle of temperature difference field in heat exchanger,” International Journal of Heat and Mass Transfer, 45, pp. 2119-2127.

The material of coils is copper and its electrical resistivity is 1.7×10-8Ω·m with radium size of 0.05mm.
Acknowledgment The material is based upon work supported by the Doctor Foundation of Zhejiang Normal University under Grant No.ZC304009095 & Scientific Research Foundation of Zhejiang ministry of education under Grant No. 
Vol. 81(2000), p. 336 [4] Cao Dong, Liu Guixiong, Qiu Dongyong, et a1: Journal of South China University of Technology(Natural Science Edition).
(in Chinese) [5] Cui Hairong, Li Decai, Sun Mingli: Journal of beijing jiaotong university，Vol. 32(4) (2008), p. 33.

Journal of Fujian University of Technology,2008(12):1~3
Journal of Yantai University(Natural Science and Engineering Edition),2001,(14):142~147
Conf. on Applied Mechanics, Materials and Manufacturing, Changchun, China, 1288-1293 November(2012)

Foundation: Tianjin Municipal Science and technology support program (13ZCZDGX01500) Reference [1] Tang Zhiguo.
Journal of Marine technology, 2012,01:27 -30
Journal of Marine technology, 2012, 2012:1-4
Luminescence and luminescent materials.

Acknowledgements The authors gratefully acknowledge the support provided for this research by the National Natural Science Foundation of China under Grant No. 50575092 and the National High-Tech Research and Development Plan of China under Grant No. 2006AA04Z214.
JSME International Journal Series C, Vol. 58(1992) No.1, pp.289-294
Journal of Materials Processing Technology, Vol.159 (2005):pp.69-82

Introduction Laser cutting technology is widely used in all kinds of materials processing.
Acknowledgments This work was supported by Research Project of State Key Laboratory of Mechanical System and Vibration (MSV201204) and Shanghai Science and Technology Development Fund for the Program of Shanghai Subject Chief Scientist (10xd1421000).
Journal of Nanjing University of Aeronautics&Astronautics, 1995, 27(6) :773～777 [4] Wu Zhongke, Jiao Haixing, Dai Guozhong.
Journal of Computer 2 Aided Design &Computer Graphics, 1998, 10(4) :328～332 [5] Wang Yongjun, ZhangJinran, Xie Youjinet al..