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Dove and Jarrett presented the results of a systematic study of surface geometry that demonstrated that, to achieve interface efficiency of approximately 1.0 for the materials used herein, the asperity height should be about equal to the median grain diameter, and the asperity spacing should be between one and three times the median grain diameter [9].
Large-scale direct shear test Test materials.
Geotechnical Testing Journal, Vol. 31 (2008), p. 358 [8] J.T.
Geotechnical Testing Journal , GTJODJ, Vol. 4 (1981), p. 145 [14] H.
Geotechnical Testing Journal, GTJODL, Vol. 19 (1996), p. 446

We wished the results would provide theoretical foundation for establishment of high-efficient water-saving mode of flue-cured tobacco. 1 Materials and methods 1.1 The tested materials The tested flue-cured tobacco, Yunyan 87, was provided by Seed Propagation Research Division, Guizhou Tobacco Science Research Institute.
Chinese Journal of Eco-Agriculture.
Journal of Irrigation and Drainage.
Chinese Journal of Eco-Agriculture.
Journal of Irrigation and Drainage.

Journal of Rheology, 31:751, 1987
Journal of Colloid Science, 14:457-472, 1959
Journal of Colloid Science, 14:473-491, 1959
Chemical Engineering Science, 27:1421-1439, 1972
Composites Science and Technology, 65:1507-1519, 2005

Asphalt mixture is the common pavement materials in high-grade highway.
The research results have theoretical guidance meaning in controling the rutting deformation of pavement materials and prolonging the service life of asphalt pavement.
Introduction As a seamless continuity pavement materials, asphalt pavement is widely-used in the high-grade highway.
Experiments Materials.
Sengoz: Construction and Building Materials, Vol.19(2005), p.155

Particulate materials are added to the bronze matrix and are classified into several roles, such as abrasives, lubricants and fillers [7].
Bhanu Vetayanugul (National Metal and Materials Technology Center), Mr.
Yan, et al., Conversion of waste FGD gypsum into hydroxyapatite for removal of Pb2+ and Cd2+ from wastewater, Journal of Colloid and Interface Science, 429 (2014) 68–76
Ghazi, et al., Development and Characterization of Fe-Based Friction Material Made by Hot Powder Preform Forging for Low Duty Applications, Journal of Minerals & Materials Characterization & Engineering. 10[13] (2011) 1205-1212
Misra, Development of Iron Based Brake Friction Material by Hot Powder Preform Forging Technique used for Medium to Heavy Duty Applications, Journal of Minerals & Materials Characterization & Engineering. 10[3] (2011) 231-244

Using the feedstock with magnetic powder loadage 91.7%wt and at the optimum injection processing parameters, the high property bonded NdFeB magnet was obtained with (BH)max=47.37kJ/m3 and density equal 5.07g/cm3 Acknowledgements This work was financially supported by the Tianjin Natural Science Foundation (12JCZDJC27200).
Smith: Journal of Magnetism and Magnetic Materials, Vol. 239(2002), p.421
Li: Journal of Magnetic Materials and Devices, Vol. 34(2003) No.4, p.36
S.: Journal of Magnetism and Magnetic Materials, Vol. 257(2003) , p.32
Xie: Journal of Mould Industry, Vol. 292(2005) No.5, p.35

Methodology Material Selection.
Only 5% maximum increase in nodal displacement is observed against 10% increase in load in the elastic range of material.
References [1] Xi Wang, Jian Cao, prediction of side-wall wrinkling in sheet metal forming processes , International Journal of Mechanical Sciences 42 (2000) [2] J Hematian and P M Wild Initial imperfections and the initiation of wrinkling in finite element modelling of deep drawing, Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering( 2000) [3] Hakim S.
Sultan Aljibori, Finite Element Analysis of Sheet Metal Forming Process, European Journal of Scientific Research ISSN 1450-216X Vol.33 No.1 (2009) [4] Ronaldo I.
Cao et al, Wrinkling behavior of laminated steel sheets, Journal of material processing technology 151 92004) 133-140.

Fig.1 The 3D model of cardan Design a kind of a positive and negative extrusion forming technology, initial blank Ф 50 x 45mm, blank in cavities of first being upsetting deformation, after to fork department against extrusion materials filling and to stem extrusion filling.
Rigid Visco-plastic Fem Model [3].Blank materials brand AISI-5140 [20-1200 °C], using rigid (sticky) plastic flow stress model: Where: is an equivalent strain, is an equivalent strain rate, T is deformation temperature.
Materials Dynamic Recrystallization Evolution Model.
Precision-forming study and test [J].Journal of metal forming process, 21 (4) : 65-67
Journal of central south university (natural science edition), 2008,39 (5) : 1005-1010.

Reed leaves contain materials such as cellulose, lignin, hemicellulose and pectin.
Experimental Materials.
Su F L.Zhou L F.Journal of Northwest Forestry University,2011,26(4),in Chinese [2] Wang M.
Progress In Polymer Science, 2001: 1765-1837 [7] Peng H F.
Journal of Cellulose Science and Technology,2008:16-04

A Study on the Energy-Saving Reconstruction of the Roof of Existing Building Rubing Han1,2, a Zhimao Xu3,b Enshen Long2,c Yan Wang2,d 1 Southwest University of Science and Technology Mianyang China 621010 2 Sichuan University Chengdu China 610065 3 Sichuan Electric Power Design ＆ Consulting CO., ltd.
The external load, water-proofing material, base material of the plant, plant nutrition earth, botany category, and water supply should be taken into consideration.
The effect of the roof heat insulation and heat preservation for the existing building or new building depends on advanced heat insulation material and heat preservation theory and the development of the energy-saving construction material.
We should powerfully research and develop new wall material, adopt heat insulation and heat preservation material, and use natural and recyclables source to serve as the construction energy.
Chongqing University Journal (Natural Science) , 2001,(03):41-44 [2] Meng Qinglin, A Study on the Cooling of Outer Surface of Buildings by Passive Water Evaporation, Journal of South China University of Technology（natural science）1997(1):63-70 [3] Nahar N M，Sharma P，Purohit M.