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Because greenery metallic material is more directly for protection, not only isolation, protective role; also beautify the highways, to increase the degree of coverage of the plants, regulating Microclimate.
Engineering safeguard measures In order to protect semiarid area highways more effective , it is necessary to take the appropriate engineering safeguard measures; That is , we can use mortared of strip stone or concrete structures to protect, including cement protection, the mortar rubble protection, cement grid protection and hollow brick protection. in addition, there are comprehensive protections, including concrete grid hollow grass, geosynthetic material grass, plants, masonry partition protection, etc.; building stairs, grid cage, diamond-shaped grid, geonet, three-dimensional network, and the other water catchment facilities, setting sand barrier.
Acknowledgment Project supported by the Young Scholars Science Foundation of Lanzhou Jiaotong University[2012051] References [1] Guo Wencheng .Pay attention to the problem on the urban green space system planning Journal, 22 (3) (2002),p.58-60

L Devore: Probability and Statistics for Engineers and the Sciences, 7th ed., Thomson Books/Cole, ch.13 (2008), p. 25-30 [10] N.
Senjuntichai: Development of Efficient Washing System for Reduction of Oil Contamination on Machining Parts, International Journal of Advanced Materials Research, Vols. 156-157 (2011), p. 1545-1554 [11] A.

Generally use lithium element-containing material is used as the electrode of the battery.
Rated voltage of the lithium-ion battery is typically 3.7V because changes in the material in recent years, lithium iron phosphate (hereafter ferrophosphorus) positive compared to 3.2V.
Harbin Normal University Natural Science Journal,2002, (6) : 54-58

Many efforts have been made to avoid the leakage and evaporation of organic solvents by replacing the liquid electrolytes with quasi-solid-state or solid-state medium, such as p-type inorganic semiconductors [2-5], organic hole transporting materials [6,7], and polymer electrolytes [8,9].
Acknowledgements This work was financially supported by the National Nature Science Foundation of China (61006047) References [1] B.O’Regan, M.
Wang: Journal of Power Sources Vol. 243 (2013), p. 919

Journal of the Geotechnical Engineering Division, 104(8), 1131-1135
IOP Conference Series: Materials and Science and Engineering, Volume 527 012018

Li: Gear multi-faults diagnosis of a rotating machinery based on independent component analysis and fuzzy k-nearest neighbor, Advanced Materials Research, Vol. 108-111(2010), p. 1033-38
Peng: Fault detection and diagnosis of the gearbox in marine propulsion system based on bispectrum analysis and artificial neural networks, Journal of Marine Science and Application, Vol. 10 (2011), p. 17-24

Journal of Hazardous Materials. 1996,51, 151-164
Rhodes Trussell.Environmental Engineer Science.2003,20 (5)

Journal of Mechanics and Physics of Solids, 1963, 11(2), 127-140.
Acknowledgements This study has been supported by funding from the Natural Sciences and Engineering Council of Canada and Materials & Manufacturing, Ontario.

Acknowledgement The authors gratefully acknowledge the research supports from the National Natural Science Foundation of China (No. 50075078; No. 50405036), the Education Office Scientific Research Project of Zhejiang Province (No. 20030262) and Hi-tech Research and Development Program of China (No. 2002AA421110).
Chen: Journal of Materials Processing Technology, Vol. 129 (2002), p. 634 [3] T.

The materials of mild steel damper adopts plate type steel Q235, steel plate thickness is 5mm, sharp corners are instead with circular arc in manufacture process.
Beijing: Science Press,2008.3:233 [3] Kelly J M．Skinner R I，Heine A J．Mechanisms of energy absorption in special devices for use in earthquake resistant structures [J].Bulletin of New Zealand National Society for Earthquake Engineering,1972,5(3):63-88
Journal of Vibration and Shock,2006,25(3):66-67 [5] Soong T T.Dargush G F Passive Energy Dissipation Systems in Structural Engineering 1997 [6] Li Aiqun,Gao Zhenshi.