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Introduction With the rapid development of modern science and technology, the pressure leak detection technology has been widely used in various fields, including aerospace, aviation, refrigeration, automotive industry, etc[1, 2].
American Society for Testing and Materials had researched the standard pressure leak [7].
J.Vac.Sci.Technol, 1996,A14(3):1247-1251 [7] American Society for Testing and Materials.
Chinese journal of vacuum science and technology. 2004,24(6).439-441 [10] Chen Xu, Zhang Qiliang, Liu Qingmin，the development of pressure leak calibration device. the 10th mass spectrum analysis and leak detection in China,2003:28-33

Study on the Isolation and Purification of Proanthocyanidins from Rhodiola rose by Macroporous Adsorbent Resin Wen Zhao1,a , Yucai Meng1,2,b, Zhiping Yin1,c, Weihua Liu1 and Cuijiao Niu1 1Department of Food Science and Technology, Agricultural University of Hebei, Baoding, Hebei, 071000, China 2 Disease Control Center of Renxian, Xintai, Hebei 055150, China azwgyf@yahoo.com.cn ，b mengyucaiaaa@126.com, cliulang2886367@163.com Keywords: Rhodiola rose; Proanthocyanidins; Macroporous resin Abstract: Five different macroreticular resins (S-8, HPD750, AB-8, HPD100 and D101) were evaluated for the adsorption properties of the proanthocyanidins extracted from Rhodiola rose.
Experimental Materials and chemicals.
Food Science, Vol. 23(2002), p108-110
Journal of Hazardous Materials, Vol. 137(2006), p157-164.

Fig. 1 Dimension of the grooved edger roll Fig. 2 Longitudinal crack size The rigid material model is used for rolls whose elastic deformations are neglected.
The bilinear isotropic hardening material model is adopted for the slab.
The main material parameters and rolling conditions are shown in Table 1. 5 50 Slab side surface Slab top surface 340 240 160 R50 R20 0.5 2.2 FE models Table1 Material parameters and rolling conditions Parameter Value Young's modulus, GPa 210 Poisson's ratio 0.3 Rolls Density, kg.m -3 7 850 Young's modulus, GPa 117 Poisson's ratio 0.3 Slab Density, kg.m -3 7 850 Draft in vertical rolling, mm 50 Draft in horizontal rolling, mm 10 Friction coefficient 0.35 Rolling conditions Rolling speed, m.s -1 4 Owing to the symmetry distribution of the rolls and the slab, a quarter of rolling parts is employed in simulation.
Acknowledgement This work was supported by the National Natural Science Foundation of China(No.50534020).
Li: Journal of Northeastern University (Nature science), Vol.26 (2005), p. 982

China 2Chendu Institute of Organic Chemistry, Chinese Academy of Science, P.R.
Metal-organic frameworks (MOFs) are a new class of crystalline microporous materials.
Acknowledgements This work was financially supported by the Key Projects in the National Science & Technology Pillar Program during the Twelfth Five-Year Plan Period (20116BAZ03281) and the Key Research Program of Qujing Normal University (2011ZD004), China.
Polymeric Materials Encyclopedia (ed.
Qiu: Chemical Journal of Chinese Universities Vol. 25 (2004), p.1016

The Research of Rockburst Hazards of Linglong Gold Mine Base on The Relationship of Impact Energy and Confining Pressure Zijian Zhang1,a, Hongguang Ji1 , Weibin Wu1,b, Yuezheng Zhang1, Shanbo Jiang2.c 1 School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China; 2Shandong Gold Group CO.
Strength criterion contains vertical stress ratio （ the ratio of vertical stress on the plane to the uniaxial compression strength of the material）[5]maximum principal stress（the ratio of maximum principal stress on the plane to the uniaxial compression strength of the material） maximum shear stress (the ratio of maximum shear stress on the plane to the uniaxial compression strength of the material).
The rock burst happens in changing stress state field, so the rock burst should not be a static material parameter, it should be related with stress state.
Chinese Journal of Geotechnical Engineering.
Engineering Science.J.Vol.2002 (7): pp.51-55.

The uncertainty of the supply process is mainly related to the supply of raw materials, transportation process, production process, such as suppliers of raw materials at the out of stock or of substandard quality, the opportunistic behavior of suppliers for their own interests, breach of contract, during transportation delays, machinery and equipment failure led to the interruption of the production process, these uncertainties will cause unable to meet customer demand, market share fell even lose market due to product obsolescence, thus causing huge losses to the supply chain enterprises.
evolution of complex systems and complexity science,2008 (3 ): 34-37
Journal of Chongqing Normal University, 2005,22 (4 ): 1-5
Management Science, 2000, 46 ( 3 ): 436 - 443.

In the analyses presented in this paper, it has been assumed that the yield strength of steel bars recovers when the material cools down [6], because the effect of steel degradation was not the main parameter investigated.
Acknowledgment The author would like to thank for the financial support received from National Science Foundation of China(grant No. 50908026)and Post-Doctoral Science Foundation of China (grant No. 20080441117; 200902541).
References [1] Jianzhuang Xiao, K Gert: Fire Safety Journal Vol.39 (2004), p.89
[2] Z.J.Xu: Experimental research on material characteristic and life preestimate and repairing of reinforced concrete structure.
[4] ASTM: Standard Methods of the Fire Tests of Building Construction and Materials.

Introduction Micro-electrolysis contact oxidation based on cell reaction of galvano-chemistry was developed as a new method to dispose wastewater in 1970s[1].In the system，metal particles as the anode contact with the negative electrode materials.
The anode and negative electrode materials are submerged in an electrolyte solution, forming a lot of micro-cells.
The mechanism of the treatment of wastewater using zero-valent iron and its application[J].Research of Environmental Sciences,2000,13(5):34~37
Thermodynamic characterization of a regenerated activated carbon surface[J].Applied Surface Science, 2002,191(1):166~170
Study on enhanced treatment nitrilon chemical industry wastewater by internal electrolysis process[J].Journal of Tongji University, 2001,29(11):1294~1298

Materials and Methods On the previous research[8], the white cast iron was smelted with pig iron, scrap steel, ferrochromium and ferromanganese.
SARE:JOURNAL OF MATERIALS SCIENCE.35(2000),p.2069 [5] Bing Liu:Hot Working Technology.
(Science and Technology).Vol.38(2007),p.1067.In Chinese

Kamil Abd Rahman1,d 1School of Physics and Material Studies, Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Selangor,Malaysia.
PVA was used as the host material for mixed-phase TiO2 powder in the form of nanofibers.
By producing TiO2 nanofibers via electrospinning technique while incorporating other suitable materials which would suppress electron-hole recombination would obviously enhance the rate of decomposition of organic pollutant.
The authors would like to acknowledge the Faculty of Applied Sciences and Research Management Institute of Universiti Teknologi MARA for the facilities and supports.
Journal. 6(6)(2011) 147-154