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Friction force can be described as following: (1) Where α is associated with the material, typically 1, so the equation above is simplified as: (2) Where F is friction force, x is displacement, Fc is half of maximum friction.
Journal of Jiangsu University (Natural Science Edition). 2012（Vol.33No.3）

(2) Where, andare two parameters which are related to the material of concrete.
Acknowledgments This project is sponsored by National Natural Science Foundation of China (Grant No. 90815005, 50978218), Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20106120110003) and the Office Educational of Shan’xi Province in China (Grant No. 2010JK633).
[2] Jie Li and Jian-ying Wu: China Civil Engineering Journal, Vol. 38 (2005), p.14-27.

Virtual Prototype Modeling and Dynamic Simulation The all component’s material properties in addition to belts are set to steel.
Yancheng Institute of Technology (Natural Science),2010,03:44 -46 +53
Chinese Journal of Construction Machinery,2007,04:437 -439 +446.

Cultural Archives refers to people engaged in social and cultural activities in the form of the material, is after a certain collation, classification, cataloguing and filing work according to a certain rule of combining files, it is a true record of the mass cultural activities.
Applied science and technology. 2002，29( 2) : 25-27
Journal of Software, 2004,15(5) :697-705

In our continuing work, new type materials will be produced using the wood ionic liquid solution.
Experimental Materials.
The materials were dried at 80℃under vacuum by stirring for 24 h.
However, the structure changes significantly for some new materials [8].
Journal of Chemical Industry and Engineering (China). 59. 5. 1299-1303. (2008)

Material parameters are given in Table 1.
Lacaze - Materials Characterization 61 (2010) p.525 [2] A.A Guimaraes and J.J Jonas - Metallurgical Transactions A 12 (1981) p.1655 [3] D.
Baker - Materials Science and Engineering 196A (1995) p.89 [5] J.M.
Liu - Materials Science and Engineering A 408 (2005) p.281 [8] J.
Thomas et al. - Journal of Mat.

Furthermore, through the Mulliken population analysis, we can see that charges transfer from the Au clusters to S atom, while charges donate to the Au clusters from the CO in CO/AunS sytem. 1 Introduction Clusters are of particular interest in the research of materials science and technology, because the properties of the materials can be designed and manipulated by properly controlling the size, shape and composition of the constituent clusters.
Davis, Science, 301 (2003) 926-927
Flytzani-Stephanopoulos, Science, 301 (2003) 935-938
Goodman, Science, 281 (1998) 1647-1650
Zhao, Journal of Physical Chemistry C, 114(2010) 996-1003

Materials and Methods Tab.1 Records on Sampling No.
Vitamin, the micro element and natural organic material, is essential for people and animals to maintain their normal physiological functions, and plays a role of regulating and controlling metabolism.
Acknowledgements This research was supported by National Scientific Foundation of China (31160154, 30872016) and Faculty Research Grant, Kunming University of Science & Technology (14118002).
Yunnan Science and Technology Press. 1995 [2] Hui Chaomao, Yang Yuming.
Journal of Fujian College of Forestry. 2011.31(1):79-83

Journal Citation (to be inserted by the publisher) Copyright by Trans Tech Publications Radiological Impact of the PARR-1 Operation on the Environment S.
This paper presents a study related to the assessment of the radiological impact on the environment due to the operation of the Pakistan Research Reactor-1 (PARR-1) at the Pakistan Institute of Nuclear Sciences and Technology (PINSTECH), Islamabad.
Contribution to this dose comes from the back ground which is due to the natural sources i.e. cosmic rays, earth metals, building materials, [7] and also the leakage through the reactor containment building, active laboratories, waste disposal area etc..

The shell was assumed to be made of an isotropic material with Young's modulus and Poisson's ratio.
Yamaki: Elastic Stability of Circular Cylindrical Shells, North Holland, Elsevier Applied Science Publishers, Amsterdam (1984)
Leger: Singular perturbation analysis of the buckling of circular cylindrical shells, European Journal of Mechanics A/Solids, 27 (2008), pp706-729