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The phase relationship of sample series of doped and undoped materials were also examined by DSC, X-Ray Powder Diffraction, A.C.
A., Materials Today (2003)
R., Long, E., Materials Letters, 57 (2003) 2540
S., et al., Journal of Materials Science, 33 (1998) 1399
K., Journal of Materials Science, 18 (1999) 355

Drilling is one of the common machining processes used on composite materials for making holes for screws, rivets, and bolts.
Since composite materials are neither homogeneous nor isotropic, the drilling of these materials can lead to damages in the regions around the drilled holes.
Ramachandra : Journal of Materials Processing Technology, Vol. 186 (2007), p. 265 – 271
Wang : Machining Science and Technology, Vol. 5(3) (2001), p. 293- 305
Abrate in: Machining of Composite Materials, edtied by Mallick, P.K.

Journal of Adhesion Science and Technology 31, 1938–1962. https://doi.org/10.1080/01694243. 2017.1290572 [2] Berges, M., 2018.
Afrique SCIENCE, 131 82–92
Materials and Design 65, 1053–1063. https://doi.org/10.1016/j.matdes. 2014.10.031 [7] Guessasma, S., Benseddiq, N., Lourdin, D., 2010.
Effect of interface properties on the effective properties of biopolymer composite materials.
Macromolecular Materials and Engineering 295, 1116–1124. https://doi.org/10.1002/mame.201000254 [15] Tabone, M.D., Cregg, J.J., Beckman, E.J., Landis, A.E., 2010.

Hudzari Hj Razali, Hasbullah Hj Muhammad, Noordin Asimi Mohd and Wan Ishak Wan Ismail (2011), J.Crop Science, 2(1):21-26, ISSN: 0976-8920 [8] Morteza Z., MahmoudO.and Asadollah A (2010), Australian Journal of Crop Sciences, (5):372-377
International Journal Of Mechanical And Materials Engineering (IJMME), Vol. 2, No. 1, 29-39
[14] Ramli MRH, Hudzari RM, Wahab FIA, Ghani MNA (2011), International Journal of Agriculture Sciences, Vol. 3(2), pp. 103-109
Hudzari Razali (2011), African Journal of Agriculture Research. 6(25). pp. 5656-5663
Hudzari Haji Razali, (2011), International Research Journal of Applied and Basic Sciences”, 2(11). pp.408-417.

Choosing the phase change materials, which the phase transition temperature is 29℃ and the latent heat is 188 kJ/kg.
Phase change materials stores the cheap electricalheatenergy, and releases during daytime, So as to realize energy conservation and economy .
When phase change materials storing hot, rate of Storing hot is.
When phase change materials heating, rate of heating is.
Journal of Tsinghua University(Science and Technology) [5] Lu Yao Qing.

Introduction In recent year, sever high strength ceramics materials (e.q., alumina and zirconia-based ceramics) were widely used because of its excellent mechanical properties of high hardness, brittleness and heat resistance.
Materials and Methods The proposed method divided into three steps: (1) making maskless-curing slurry, (2) building up sacrificed layers and ceramic parts by layer additive process, and (3) post-process to get the final ceramic parts.
The colloidal science was also applied in this process to produce fully dispersed slurry.
Chartier, T., Chaput, C., Doreau, F. and Loiseau, M, “Stereolithography of structural complex ceramic parts”, Journal of Material Science, Vol. 37, pp. 3141- 3147,2002 [4].
“Building ultra-thin layers by ceramic laser sintering”, Material Transaction Journal of Japan Institute of Metal, Vol. 47, pp. 889-897,2006 [6].

All raw materials needed were weight according to the stoichiometric ratio.
All the raw materials were weighted.And then thoroughly grinded in agate mortar, placed in a corundum crucible, react in microwaveat mid-high fire for 30 min under reducing atmosphere.Redlight conversion agentswere obtained after cooling to room temperature.
The concentration of rare earth ions doped influences on luminescence property of materials remarkably (as shown in Fig.5).Fig.5 (1) showsthat the emission intensityof Ca0.6Sr0.4F2:Eu2+gradually increasedwith the increase ofEu2+when the doping concentration of Eu2+ is lower.
Androulidaki,et al: Materials Science and Engineering: B Vol.150(2008),p.130-134 [7] J.E.
Poelman.: SpectrochimicaActa Part B: Atomic Spectroscopy Vol.59(2004),p.1759-1764 [8] Liwen Ding, et al: Journal of Hunan Normal University Natural Science Vol.27-1(2004),p.48-50 [9] ShixunLian et al: Journal of Luminescence Vol.18-2(1997),p.166-173 [10] Zhike Xia et al: Journal of Hunan Normal University Natural Science Vol.30-1(2007),p.64-67 [11] ShixunLian, Liwen Ding, Dulin Yin et al: Journal of Hunan Normal University Natural Science Vol.19-3(2004),p.56-59 [12] Renqing Wang: Journal Optoelectronics•Laser Vol.22-4 (2011),p.562-565 [13] R Nathalie，P T Mai，F Claude et al: J.

Fig.1 Pile layout and finite modeling of sparse pile to control settlement Five materials are included in the analysis, the embankment fill, the cushion, the soft clay, substratum soil, pile and geosynthetic.
We use Duncan-Chang hyperbolic model to describe the choice of embankment fill, cushion, soft clay and substratum soil .The pile and geosynthetic are linear elastic materials.
Each material parameters is as Table 1.
In existed design methods[8], regulations BS8006 of England about reinforced soil engineering synthetic materials, arching effect analysis method which was put forward by Hewlett&Randolph and Guido both didn’t consider the change of pile and geosynthetic modulus, which can effect the development of differential settlement and then effect the degree of soil arching effect.
References [1] W.G Rao, H.H Jiang, Q.H Hou: Journal of Hydraulic Engineering, Vol.4( 2002), p.23 [2] Y.M Chen, N.Jia, R.P Chen: China Journal of Highway and Transport, Vol.17(2004), p.1 [3] Hibbitt, Karlsson&Sorensen: ABAQUS Analysis User′s Manual, Ver6.2, HKS, USA, Vol.13 (2001) [4] Jiangsu Province Shanghai-Nanjing Expressway Extension Project Headquarters.

Synthesis and Characterization of Hexagonal Boron Nitride Nanosheets Guo Chao1, Dong Limin1, 2, Gong Shijun1, Miao Chunyu1, Zhang Xianyou1, a 1College of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150040, China 2Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education, Harbin University of Science and Technology, Harbin China acorresponding author: zhangxianyou163@163.com Keywords: Hexagonal boron nitride; Nanosheets; Solid-phase sintering Abstract.
And the SEM images show the sheetlike materials with a diameter of about 500-900 nm, and the thickness is about 100 nm.
No diffraction peaks for other phases or materials are observed in XRD patterns, indicating a high purity and crystallinity of the final products.
Journal of Liao-dong University (Natural Sciences).
Journal of Crystal Growth, 311 (2009), 3682-3686

Dong, Materials Science and Engineering A 527(2010) 7279-7285
Journal of Materials Processing Technology, 1995,53(1-2):293-310
Comparative constitutive constants for hot working of Al-4.4Mg-0.7Mn(AA5083)[J].Journal of Materials Processing Technology, 1995,53(1-2):293-310
Effect of strain-rate upon the plastic flow of steel[J].Journal of Applied Physics,1944,15(1):22-32 [15] SHI H ,MALAREN A J ,SELLARS C M ,et al.Constitutive equations for high temperature flow stress of aluminum alloy[J].Materials Science and engineering,1997,13(3):210-216 [16] Y.
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