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Its basic thought is to introduce a hypothesis variable material with density value ranges from 0 to 1.
Meanwhile, non-interference and assembling parts have necessary material infusion.
The material of suspended bracket is investment casting steal ZGD410-700 and Table 2 shows material parameter.
For stress constraint, it is not allowed that maxim stress is bigger than material offset limit.
Finite element analysis and topology optimization design of mounting bracket structure [J].Journal of Shenyang University of Technology, Vol. 3 (2008), p.313-317 (In Chinese)

For the production phase of building envelope, the environmental impact generated by production of raw materials, energy production, energy combustion and during transport are considered.
(6) where, αk: The waste ratio of the kth kind of envelope materials.
International Dairy Journal, 2002, 12(11)
Science Bulletin, 2008, 53(15).
Journal of Chongqing Architecture University, 2003, 25(5).

The size of aggregate model III is 16×4mm, which the long axis and the direction of the pressure model are Vertical.The stress of the material is in Table 1,and the stress cloud is shown in Figure 1.
Tabel 1 The three model materials Stress （MPa） model X stress range（MPa） Y stress range（MPa） Shear stress（MPa） I aggregate -0.555~0.728 -2.683~-0.965 -0.450~0.471 mortar -0.479~-0.192 -1.235~-0.144 -0.417~0.390 II aggregate -0.507~0.206 -2.137~-0.736 -0.324~0.342 mortar -0.465~-0.196 -1.133~-0.160 -0.263~0.240 III aggregate -0.445~-0.097 -1.759~-0.734 -0.208~0.217 mortar -0.460~-0.198 -1.133~-0.183 -0.188~0.187 We can know form the tabel 1,the maximum stress of three mode are almost in the aggregate unit, because the aggregate has a high modulus mixes to withstand external loads.
In order to ensure stress response differences by graduation changes, we use the same material parameters, the same method to establish nine different random structure models, and apply 0.7MPa uniformly distributed load.
References [1] H.N.Wang，P.W.Hao：Journal of Chang’an University(Natural Science Edition) ,Vol.28 No.3 May 2008,p.11-14 [2] Christoffersion, H., Mehrabadi, M.
M.and Nemat-Nasser, S.: Journal of Applied Mechanics, vol. 48(1981)No.2, p. 339

Citation & Copyright (to be inserted by the publisher ) New Understanding of Abnormal Grain Growth Approached by Solid-State Wetting along Grain Boundary or Triple Junction Nong-Moon Hwang Center for Microstructure Science of Materials, School of Mater.
The migration of a grain boundary is kinetically coupled with that of other grain boundaries through triple junctions in polycrystalline materials.
Role of Constraint Imposed by Triple Junction in Grain Growth In polycrystalline materials, grain growth is driven by the grain boundary curvature.
Journal Title and Volume Number (to be inserted by the publisher) 5 On the other hand, MC simulation shows that island grains are easily formed by solid-state wetting [7].
Grain Growth in Polycrystalline Materials III, (1998), p. 327.

By modifying the printer material handling and fluid system basic processability of the inorganic sand binder system (SBS) could be achieved.
In order to reach the desired mould material properties thermal processing during the printing process is necessary.
Specimen strength is characterised by the fracture stress σB3B in [N/mm²] which can be calculated from the measured fracture load FF and the specimen thickness t by the following equation [18]: (2) σB3B=f∙FFt2 Based on a numerical simulation with ceramic materials the fit factor f amounts to values between 1 and 3 depending on the material’s Poisson ratio [18].
Ganter, A review of process development steps for new material systems in three dimensional printing (3DP), Journal of Manufacturing Processes 10 (2008) 96-104
Gercek, Poisson's ratio values for rocks, International Journal of Rock Mechanics & Mining Sciences 44 (2007) 1-13.

Materials and Methods Experimental field preparation and rice cultivation During April to July in 2011, the rice growing seasons, the experiment was carried out in Wufeng agronomy field of Fujian Academy of Agricultral Sciences(26.1°N,119.3°E ),southeast China,.
Emerson,J.P.Megonigal: Geomicrobiology Journal Vol.24(2007),p.65 [8] J.
Takahashi:Soil Science and Plant Nutrition Vol.35(1989),p.347 [9] A.
Patrick: Communications in Soil Science and Plant Analysis Vol.27(1996),p.2221 [10] C.
Orphan: Science Vol.325(2009),p.184 [13] U .Jäckel, S.

Thedenotes wave number, wave frequency, satifying, wave height , and , .Theis the porosity coefficient, and, whereis the coefficient of dynamic viscosity andis a material constant having length dimension.
(f1 means wave force;f2 means uplifts force) (M1 means wave moment;M2 means overturn moment) Fig.2 Comparison of uplifts force and wave force & comparison of overturn moment and wave moment () Fig.3 Variation of uplifts force and overturn moment with different () Fig.4 Variation of uplifts force and overturn moment with different () Fig.5 Variation of uplifts force and overturn moment with different () Acknowledgements This work was financially supported by the Specific Science Research Foundation of National Ocean Public welfare of China (201005002).
Journal of North University of China (Natural Science edition).

Gas explosion effect on structure damage and control measures Fengge Li , Long Chen Architecture And Civil Engineering School, Inner Mongolia University Of Science And Technology, Baotou,014010,China Email: longchen0113@126.com Keywords: gas explosion, progressive collapse, control measures Abstract: Gas explosion is a kind of harm partial load by accident, it is the main cause continuity of the collapsed buildings.
However, in addition to the three aspects of prevention, (accident control design, design directly, design indirectly), we should also pay attention to the following aspects: 4.1 When design structure, we should consider material, decorate construction way, we should choose simple, rules, stiffness distribution uniform plane and choose with good properties structure of oppose explode., we less as far as possible should be used cast-in-place reinforced concrete frame and precast slab with mixed structure.
Journal of disaster science, 1999, 14 (3) : 79-82 [3] Guo Wenjun.

Acknowledgements The authors would like to acknowledge the financial support provided for this research work by Fund: the national science and technology support project of China (Research on product quality safety verification and risk warning technology, No. 2013BAK04B03), Fundamental scientific research projects of Chinese Academy of Inspection and Quarantine (CAIQ)(2014JK025), Science and technology projects of General Administration of Quality Supervision, Inspection and Quarantine of the People’s Republic of China (Research on consistency test and evaluation of power battery pack, No. 2013IK091), and Fundamental scientific research projects of Chinese Academy of Inspection and Quarantine (CAIQ) (Research on consistency and security of Lithium ion power battery, No. 2013JK015).
Research on cathode material of Li-ion battery by yttrium doping, JOURNAL OF RARE EARTHS, Vol. 26, No. 2, Apr. 2008, p. 279 [2] Hu Xin-guo.

Experimental Study on Extraction of Scandium from Complex Silicate Ore Qingrong Yang1, a, Guifang Zhang2, b and Peng Yan3, c 123Kunming University of science and technology, Kunming, 650093, China 1Kunming metallurgy college, Kunming, 650033, China aemail:qryang@163.com, bemail:zgf@kmust.edu.cn,cemail:yan.peng1018@163.com Keywords: Complex silicate ore, P501 extraction agent, Extraction of scandium, Scandium concentration Abstract.
Table 1 Chemical composition of the Scandium concentrate (%) compositon Fe P As S TiO2 MgO Content 7.03 0.17 0.012 0.022 1.03 13.40 compositon CaO SiO2 Al2O3 Pt Sc2O3 (g.t-1) Total rare earth Content 19.25 48.65 2.47 0.027 122 0.039 Table 2 Analysis of Scandium phases Item Sc2O3 diopside biotite limonite hornblende zircon Quartz, anorthose etc. content/g.t-1 122 158.1 6.2 8 85.8 320 43.8 occupancy/% 100 58.5 0.4 3 3.6 4 30.5 The results in table 1 and table 2 showed that the content of magnesium oxide, calcium oxide, silicon dioxide was high and the sample belonged to the material with high content of calcium, magnesium and silicon, these impurity elements would effect the leaching rate.
Rare earths dressing and extraction technology [M].Beijing: Science Publishing House,1996.
Chinese Journal Of Rare Metals, 2007,7(6):136.