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A: Journal of Intelligent Material Systems and Structures.

Burt, “An in vitro study of plasticized poly(lactic-co-glycolic acid) films as possible guided tissue regeneration membranes: material properties and drug release kinetics.,” Journal of biomedical materials research.
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Of 3rd Asia-Australian conference on composite materials (ACCM-3) 15-18 July, Auckland, New Zealand 479-485 (2002)

The so-called dynamic mechanical analysis(DMA) is a method to test the materials' dynamic mechanical properties in a certain temperature range and it is also an important method to study the viscoelastic property of material[4] during the 1950s~1960s, most laboratory developed their own instruments to research due to the lack of commercial instruments.
Dynamic Mechanics Analysis (DMA) technology is a method to evaluate polymer thermodynamic properties, compatibility and damping etc.[5,6], which appears an significant action in evaluating of material combination property, design, optimization, materials processing and quality guarantee, etc.
Nevertheless, the mechanical properties of materials research results show that preload and dynamic load size for the dynamic visco-elastic materials parameters have greater effects on it.
Experimental results own an important reference value for further studying dynamic mechanics properties of polymer materials and its physical aging.
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Fig. 3 shows the XRD patterns of the BCN materials deposited at substrate temperatures of 600, 700 and 800 °C, respectively.
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Journal of Materials Processing Technology, 2006, 180(1): 318-322
Materials Science and Engineering: A, 2011, 529: 447-451
Materials Science and Engineering: A, 2003, 363(1): 263-267
Materials characterization, 2007, 58(1): 65-71
Advanced Materials & Processes. 2002, 160(6): 49-51

Materials Science & Engineering A, 56840-48(2013)
Materials Science and Engineering: A, 464(1–2), 255-260(2007)
Materials Science and Engineering: A, Volume 595, 173-178(2014)
Transactions of materials and heat treatment, 35(1):175- 180(2014).
Transactions of materials and heat treatment, 35(S): 195-199(2014).

College of Life Science, Hebei University, Baoding, P.R.
Hebei Ocean& Fishery Sciences Research Institute, Qinhuangdao, P.R .China 8.
Institute of Laboratory Animal Science, Chinese Academy of Medical Science,Beijing, P.R.
Materials and Methods Gastropods (Cipangopaludina chinensis) were collected from Baiyangdian Lake in Hebei Province, then after the pre-experiment, they were divided into five experimental groups (I: Control；II: Ethanol control; III: Environmental concentration group; IV: 10 times of Environmental concentration group;V: 20 times of Environmental concentration group).
Journal of fish biology, 2012, 80(5): 2112-2121.

Therefore, just the fourth level’s natural frequency need to be achieved, where the material properties is, 20GPa for elastic modulus, 0.33 for Poisson's ratio ,and 1.65g/cm3 for density.
Journal of Fluid and Structures, 2004, 19: 389- 447
Progress in Aerospace Sciences, 2005, 41:301-322
[7]Guan Xiaorong, Xu Cheng, Numerical Investigation of Asymmetric Vortical Flow over a Slender Body at Large Angles of Attack[J], Journal of Ballistics, 2007, 19(1): 55-58.
(in Chinese) [10]Cao Fengchan, Xiang Haifan, Calculation of unsteady flow around circular cylinder and vortex-induced vibration[J], Journal of Hydrodynamics, 2001.16(1): 111-117.

Material of cross-rail is QT600,its relevant parameters are shown in table 1.
Acknowledgements This work was financially supported by the national Natural Science Funds(50905004) and National Science & Technology Major Projects (2012ZX04010-011).
Journal of Tsinghua University(Science and Technology), 2006，46(2)：191-193
Journal of Beijing University of Technology, To be published.
Journal of Beijing University of Technology. 2012，38(1)：12~16.