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By means of an electronic balance and SEM, the material transfer values of the PtIr contact materials and the characteristics of contact material surface profile are obtained and analyzed.
But the researches mainly focus on silver-based electrical contact materials.
Surface morphology of sample 3 contact materials after 10000 operations A.
[2] Zhang Kunhua, Guan Weimin, Sun Jialin et al, Preparation and DC arc erosion morphology of AgSnO2 contact materials, Rare Metal Materials and Engineering. 34 (2005) 924-927
[3] Ren Junjie, Wan Wenjiang, Rong Mingzhe , Arc erosion morphology of AgMeO contact materials, Electric Engineering. 5 (1997) 9-12 [4] Guo Fengyi, Wang Guoqiang, Dong Na et al, The arc erosive characteristics and crack formation mechanics analysis of silver-based contact materials, Proceeding of CSEE. 24 (2004) 209-217 [5] Jing Li, Zhi-ying Ma, Research on arc erosion of silver-based alloy contact materials under low voltage resistive load and small current at 400 Hz and 50 Hz, Academic Journal of Xi’an Jiaotong University. 3 (2009) 149-154

Puertas, and Villa, Material removal rate and electrode wear study on the EDM of silicon carbide, Journal of materials processing technology. 164 (2005) 889-896
[7] Zarepour, H., et al., Statistical analysis on electrode wear in EDM of tool steel DIN 1.2714 used in forging dies, Journal of Materials Processing Technology. 187 (2007) 711-714
[9] Marafona, J., Black layer characterisation and electrode wear ratio in electrical discharge machining (EDM), Journal of Materials Processing Technology. 184(1-3) (2007) 27-31
Materials Research Express. 6(8) (2019)
Journal of Environmental Science and Engineering B 6 (2017) 387-390

Introduction The major existing packaging materials, mostly foam category, class cushioning molded pulp packaging materials.
Plastic packaging materials are petroleum by-products, biodegradable.
JOURNAL OF APPLIED POLYMER SCIENCE, 2004, 93(6):2627-2633
Rheological characterization of thermoplastic starch materials[J].
JOURNAL OF FOOD SCIENCE, 2009, 74(5):C353-C361

Development of multi-scale computation framework to investigate the failure behavior of the materials *Z.
With the development of material science, especially as MEMS/NEMS are playing a more and more important role in modern engineering, some mechanical behaviors of materials, e.g., fracture, shear instability, need to be investigated from multidisciplinary perspective.
Though molecular dynamics (MD) simulations have been widely performed to explore the mechanical properties of nano-scale materials, it is impossible to handle not only the loading rate but also the specimen size used in the current MD simulation with existing experimental techniques.
Acknowledgements The support of the National Natural Science Foundation of China (NSFC) is gratefully acknowledged.
Fang: International Journal for Mutiscale Computational Engineering 3(2005), p. 451

Materials and methods 2.1 Materials Camellia anthracnose leaves and fruit selected from you city, liuyang Camellia demonstration bases in Hunan Province.
Study on Camellia anthrax. edited by journal of plant protection, vol2, p253-261,1963.
Ordinary camellia anthrax optimal strains resistant breeding , edited by journal of forestry science and technology development, vol4, p22-24, 1997.
Banana blights antagonized antibacterial screening test, edited by journal of guangdong agricultural science,vol11.p96-99, 2006.
China's fungal, edited by Beijing: science press, vol82,1963.

Introduction The Optimization Decision Method of science and technology industrialization projects is the important work of science and technology management content.
Through the optimization government departments can make more rational allocation of resources, manpower, material and financial resources, to achieve efficient decision-making and project management, to improve the success rate, faster and better promote scientific and technological achievements into practical productive forces.
Science and technology industrialization projects have a prominent feature of many risk factors, serious risk consequences.
References [1]Mingming Wang and Yanpeng Zhang, “national science and technology projects to achieve the goal of industrialization of a number of key issues”, Science and Technology Management ,Oct.2008,pp.17-19 [2]Yukun Bao and jinlong Zhang, “ used in bidding for the industrialization of scientific and technological project bidding Class Index System”, Science and Technology Progress and Policy,Jun. 2002,pp.101-104 [3]Ji-ye Liang,Cheng-yuan Chu and Jian-long Hu, “Research on fuzzy integrative evaluation for implemented situation of technological projects”,Journal of Systems Engineering, May.2008,pp.126-130 [4]Ru LiI,Li-fang Zhang and Cheng-yuan Chu, “The Research on the Fuzzy Comprehensive Evaluation of Scientific and Technical Projects”,Systems Engineering-Theory & Practice, Sep.2006,pp.68-78 [5]li Chen,Chong-wei Huang and Fang-hai Zhu, “Fuzzy Comprehensive Evaluation of Communications Science and Technology Project on the basis of Multi-hierarchy System”,Western China Communications
Science & Technology,Jun.2007,pp.20-23

Third, they should find additional materials to support the teaching materials and get students interested.
Therefore, the teachers’ skill in “enriching teaching materials” needs to be improved quickly.
For instance, the Core English of Shanghai Jiao Tong University and the English reading materials included in “Construction Plan of Network-based Remote Teaching System in the New Century” recommended by the State Council are excellent teaching materials.
The contents of all-English teaching materials vary according to different majors.
North University of China Journal 2005, (2)

It is therefore of great importance to enhance the motor performance by means of using more powerful functional materials and/or optimizing the geometric structures.
It is observed that different functional materials obviously alter the trajectories of the driving point.
The influence of different piezo materials on the reaction forces are not as obvious as on the output displacement.
Acknowledgement This work is supported by Agency for Science, Technology and Research (A*STAR) under Grant No. 092 156 0127.
[6] R Zhang, B Jiang and WW CAO, Complete set of material constants of 0.93Pb(Zn1/3Nb2/3)O3-0.07PbTiO3 domain engineered single crystal, Journal of Materials Science Letters, Vol. 21, pp. 1877-1879, 2002

AFM, EDP Sciences. 2007, pp. 463–469
In: International Journal of Machine Tools & Manufacture, Volume 49.
In: International Journal of Machine Tools & Manufacture, Volume 49.
Machining of Composite Materials.
Multi-layer Materials.

Progress on Mg2Si thermoelectric materials Xiaodong Luo*, Hao Liu, Wenlin Xu, Yongxiang Zhu College of Metallurgical and Materials Engineering, ChongqingUniversity of Science and Technology, Chongqing, 400041 (CHINA) E-mail: lxd336@163.com;liuhao_023@163.com; Lyl4877@126.com; zyx018@163.com Keywords: Mg2Si; properties; Preparation technique; research status; doping Abstract.
Journal of Alloys Compounds, 2008, 464 : 9-12
Journal of the Chinese Ceramic Society, 2008, 36(3): 337-340
Journal of Functional Materials. 2008, 12(39):2008-2010
Journal of Functional Materials. 2011, 3(42):395-397.