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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.

Huang et al. [11] optimized the microstructures of cellular materials and composites for a given macrostructure using the BESO method.
Wiegmann, Structural boundary design via level set and immersed interface methods, Journal of Computational Physics, Vol. 163 2 (2000) 489-528
Sigmund, Tailoring materials with prescribed elastic properties, Mechanics of Materials, 20 (1995) 351-368
Xie, Topological design of microstructures of cellular materials for maximum bulk or shear modulus, Computational Materials Science, 50 (2011) 1861-1870
Li, Topology optimization of microstructures of cellular materials and composites for structures, Computational Materials Science, 67 (2013) 397-407

Materials.
Fukushima and T Kurauchi: Journal of Materials research Vol. 8 (1993) p. 1179 [7] A.
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Castro: Materials Science and Engineering A216 (1996), 185-192. 37.
Kim: Journal of Materials Science 40 (2005), 4153-4155. 39.
Hamamoto: Journal of Materials Science, 25 (1990), 523-536. 57.
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Dykes: Journal of Materials Science, 26 (1991), 3730-3738. 70.

This means it has less elongation than other stent materials and it may cause strut break under large deformation.
The authors acknowledge the financial support of the Natural Science Foundation of Heilongjiang Province of China (No. 159100120019) and LTCS National Laboratory of China.
Journal of Biomechanics 35 (2002) 803–811 [3] W.
Filipiak., Experimental and numerical biomechanical analysis of vascular stent, Journal of Materials Processing Technology, Vol 164-165(2005), pp 1263-1268
Journal of Biomechanical Engineering Transactions of the ASME 127, 337–344 (2005).

The excavation includes assembling the materials from their source through mining.
Gypsum used in this study was locally available materials, that is ß - hemihydrate.
AL-Rawas, Physical Properties and Compressive Strength of the Technical Plaster and Local Juss,Iraqi Journal of Earth Sciences. 9 (2009) 49-58
Fernandez, Study of Fresh and Hardening Process Properties of Gypsum with Three Different PCM Inclusion Methods, Journal of Materials.8 (2015) 6589-6596
Strokova, Recrystallization of Gypsum Particles, International Journal of Envoromental & Science Education.11 (2016) 12361-12366

(1) Where: qr is the intensity of the heat flux of laser beam at the material surface，qm is the intensity of peak heat flux of laser beam，η is heat absorption efficiency(η=20%)，P is laser beam power(P=1000w)，R is laser beam diameter (R=0.4mm) and r is distance from the center of the laser beam.
Material Properties.
The material properties parameters of Ta, Mo are respectively shown in Fig. 3(a)-(b).
Material plastic behavior is represented using the Von Mises yield criterion and the bilinear isotropic strain hardening law.
References [1] PingJie Chen, Bihua Zhan: submitted to Journal of Vacuum Electronics (1988), In Chinese [2] Changgui Wu, Xianxiu Wang: submitted to Journal of Laser Technology (1989), In Chinese [3] Kim K wanwoo, Lee Jungkil and Cho Haeyong: submitted to Journal of Mechanical Science and Technology (2010) [4] Trivedi A, Bag S and De A: submitted to Journal of Science Technology Weld Join(2007) [5] De A, DeRoy T: submitted to Journal of Science Technology Weld Join(2006) [6] Sabbaghzadeh J, Azizi M and Torkamany MJ: submitted to Journal of Optical Laser Technology(2008) [7] Fanrong Kong and Radovan Kovacevic: submitted to Journal of Materials Processing Technology (2010)

Experimental Section Materials and Instruments.
After cultivation for 3 days, we removed the DEME medium and washed the materials with PBS for three times.
We calculated the specific number of cells on the surface of different materials with Image J (Table 1).
Preparation and characterization of bacterial cellulose sponge with hierarchical pore structure as tissue engineering scaffold, Journal of Porous Materials. 18 (2011) 139-145
Bacterial Cellulose: Long-Term Biocompatibility Studies, Journal of Biomaterials Science Polymer Edition. 23 (2012) 1339-1354

Barker et al.[31] pointed out that low molecular weight materials were present in significant concentrations.
Journal of Membrane Science, 342(1), 88-96
Journal of Membrane Science, 463, 94-101
Journal of Membrane Science, 451, 169-176
Advanced Materials Research, 864, 1482-1485.

Materials Science and Engineering A, 2009, 520: 1-10
Materials Science and Engineering A, 2001, 298: 84-89
Rare Metal Materials and Engineering, 2015, 44(5): 1173-1176
Metallurgical and Materials Transactions A, 2005, 36: 3001-3017
Journal of materials engineering, 2007, 7: 74-77