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Not only does it put forward a lot of new subjects on enriching and developing project management, risk management and safety management, but supplies a lot of new materials.
Meanwhile, in the situation of sudden accidents, the existing state of emergency materials, emergency information is relatively stable, and evolves as the time goes.
Management Science, 2006,2:4 ~ 5 [5] Qishan Hong, Guo-Lin, Liu Yan; in Raymond.
China Soft Science, 2002,248 ~ 51 [7] Huang Dian Jian, Li Chuangui.
Science Press, 1988:2 ~ 17

In the determination of plane strain fracture toughness test [9], CT specimen is recommended by ASTM E1547, especially used for assessment and research of the nuclear pressure vessel materials.
Fig.2 The relationship between C*and A Fig.3 Solution on * by RSM Projects of solution to creep fracture mechanics parameter C* based on RSM Four ideal elastic-power creep rate materials with different creep coefficient and creep exponent shown as Table 1 are used to research RSM for solving the creep fracture mechanics parameters C*.The data of material 1 and material 2 in Table 1 are derived from 1Cr0.5Mo and 1.25Cr0.5Mo respectively when they are at 538 degrees, and the other two materials are hypothetical.
Tab.1 Mechanical property utilized in C* calculation MATERIAL Material1 175 9.03 0.3 Material 2 175 9.36 0.3 Material 3 175 9.03 0.3 Material 4 175 9.03 0.3 Using finite element analysis software - ABAQUS, the element type selects eight node quadratic reduced integration element (CPE8R), and width is 24mm, and meshing is shown in Fig. 4.
References [1] S Tu, J Gong, X Ling: Journal of Nanjing University of Chemical Technology.
Science Press, Beijing (2003) [4] R.A.

D.rousiere and J.aranzaba," Development of Mixed (ferrite- ausferrite) Structures Spheroidal graphite irons ", Metallurgical Science and Technology, vol.18, no.1, June 2000. 3.
Rundman ," METAL CASTING (Reference Book for MY4130)", Dept. of Materials Science and Engineering Michigan Tech.
Chan Tung Chen and Tien Shou Lei," The Processing Window for austempering Ductile Iron ", Materials Transactions, JIM, Vol.40 No.1 (1999) pp.82-85. 7.
Journal of Cast Metals.Res.1997, vol.9, 249-257. 9.
Stokes and P.A.S.Reed," Fatigue Analysis of Austempered Ductile Iron Suitable for Automotive Camshaft Application", Materials Research Group, University of Southampton, Highfield, Southampton.SO171 BJ.

Seismic damage simulation of arch dam Considering the heterogeneity intrinsic to concrete materials, the authors have proposed a procedure to take into account the influence of this heterogeneity in the seismic damage simulation of concrete dams[4][5].In the presented paper, this procedure was employed to model damage process of an arch dam through Monte-Carlo analysis.
The uncertainty in ground motion input (peak ground motion), materials properties of concrete and heterogeneity of concrete are considered. 3.
In the current research, the numerical approached was used, the uncertainty in ground motion input and material properties of concrete was considered.
Acknowledgements This work was financially supported by the National Science Foundation of China (51009019).
Tekie: Journal of Infrastructure Systems Vol. 7(2) (2001), p. 41-48

MATERIALS AND METHODS Materials: All reagents were of Guaranteed grade.
[J].Journal of tea business, 2010.32（1）：21-24
M., Eds.; Soil Science Society of America: Madison, WI., 1991; pp 477-521
Effect of organic materials on partitioning，extractability and Plant uptake of metals in an alum shale soil.
Journal of Environmental Sciences 1999,19(1),81-86 [11]Zhao Zhong-qiu,Zhu Yong guan, Cai Yun long.

Effect of aggregate volume fraction on the charge passed of mortar and concrete Quan-Lin Niu 1,a Chong-Zhi Li 2,b 1 School of materials science and technology, Shandong University of Technology, Zibo Shandong 255049 2 Beijing university of civil engineering and architecture a mail: niuquanlin@tsinghua.org.cn b mail: lichongzhi@bucea.edu.cn Keywords: Charge passed; aggregate; differential expression of Ohm law；volume fraction Abstract: Charge passed of mortars with different aggregate volume fractions was tested according to ASTM C1202, and the differential expression of the Ohm law was introduced to explain the relationship between charge passed data and aggregate fractions.Cl- penetration depth of the corresponding mortars and concretes was measured to illustrate the influence of the aggregate volume fraction on their chloride permeability.
Experimental Materials.
[3] Geiker,m., Thaulow,n., and Anderson,p.j., assessment of rapid chloride permeability of concrete with and without mineral admixtures, proceedings, in: the fifth international conference on durability of building materials and components, 1990, pp45-55
Caldwell, Effect of supplementary cementing materials on the specific conductivity of pore solution and its implication on the rapid chloride permeability test results, ACI material journal,V.95,N.4,1998,389-394
[8] Otsuki, N; Nagataki, S; and Nakashita, K., Evaluation of AgNO3 nitration solution spray method for measurement of chloride penetration into the hardened cementitious matrix materials, ACI Materials Journal, V. 89 (1992).

This improves the physical properties of these hexaferrites; therefore, they can be used in telecommunication applications, to increase the operational frequency of electronic devices, and as microwave absorbing materials.
Increasing the dopant concentration in W-type hexaferrites delivers better results in saturation magnetization, coercive field, and remnant magnetization; therefore, these materials can be used in high density and perpendicular magnetic recording medium applications [4].
The value of Mr/Ms obtained is 0.04, which suggests that the new hexaferrite has multiple magnetic domains; this is a behavior exhibited by ferrimagnetics materials (Mr/Ms < 0.5).
The coercivity of magnetic materials is directly correlated with magnetocrystalline anisotropy (Ha) according to the equation Ha = 2k1/Ms, (1) where k1 is the first anisotropy constant.
Pullar, Hexagonal ferrites: A review of the synthesis, properties and applications of hexaferrite ceramics, Progress in Materials Science 57 (2012) 1191–1334

To evaluate the ionization integrals IN and IP for the different materials described above the ionization coefficients need to be determined as a function of the electric field E.
List of impact ionization coeffecients for various poly-types of SiC Material AN(cm -1) AP(cm -1 ) BN(cm -1 ) BP(cm -1 ) 4H<0001> 4.08e5 1.63e7 1.67e7 1.67e7 4H<11-20> 2.1e7 2.96e7 1.7e7 1.6e7 6H<0001> 4.57e8 5.13e6 5.24e7 1.57e7 One dimensional zero carrier simulations were performed for both NPN and PNP BJTs for the three materials presented in Table 1.
Lindefelt , " Study of Avalanche Breakdown and Impact Ionization in 4H Silicon Carbide", Journal of Electronic Materials, vol 27, n 4, pp.335-341, 1998
Shenai, "Performance evaluation of high power wide bandgap semiconductor rectifiers," Journal of Applied Physics, vol 85, n 9, pp. 6889-6897, 1999
Arai, International Conference on Silicon Carbide and Related Materials, Part 2, pp. 673-676, 2003

Material and Experimental Procedures Material.
The HDH produced Ti-6Al-4V powder was supplied by Phelly Materials.
Patrick Martin and Lee Semiatin (AFRL/MLMD) References [1] Jim Williams, J. of Materials Processing Technology, 117 (2001), p. 370-373
Lapovok, Journal of Materials Science, 40:2, (2005), pp. 341-346
Anderson, Journal of Non-crystalline Solids 317 (203), 144-151

So the preparation of TiAl-based alloy materials processing technology is the development and application of TiAl-based alloy key issue.
ACKNOWLEDGE This paper is supported by China Three Gorges University Research Fund (0620100021) project, special thanks to China Three Gorges University, School of Mechanical and Materials help.
Materials Science and Engneering A. 1995,192/193:774~779 [2] S.
Journal of Materials Processing Technology. 2005,167(1):14~24 [4] M.
Materials for Advanced Power Engineering. 1998,933~941