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Reactive powder concrete (RPC), which is a new cement-based composite material with ultra-high strength, low-brittleness, excellent durability, is adopted to make well covers.
RPC is a new type of cementitous materials with ultra-high strength, low-brittleness and excellent durability.
Experimental Procedures Materials Cement: P.Ⅱ52.5 portland cement, produced by Taiheiyo cement corporation, Japan.
[5] SONG Wan-ming, DONG Bing: Steel Fiber Reinforced Concrete and Its Application, Journal of Kunming Unversity of Science and Technology, 1998, 23(1), pp. 20-24(in Chinese)
[8] HU Xiao-bo, ZHA N G Yan-chun , YANG Yuan-xia and SUN Xiao-bao: Study of Fatigue Test and Appl ication Grade of Steel Fiber Reinforced Concrete Manhole Top, Journal of Building Materials, 2003,6(2), pp. 200-203(in Chinese).

Materials and methods 1.1 Information for study area Studied area is in 39′05.597′N. latitude and 109′34.872′E. longitude at 1305m altitude.
Soil and Environmental Sciences, 2002, 11 (2):140-143
Chinese Journal of Soil Science, 2006, 37 (1): 171-177
Chinese Journal of Soil Science,2008, 39(6):1376-1379
Journal of Microbiological Methods, 2004, 58:169-188

The sewage sludge imposed environment pollutions for containing toxic and deleterious materials such as pathogen, parasite, heavy metals, etc, and emitting offensive odor.
The gas and oil separated from the liquid fraction could be used as fuels or chemical feedback, the solid fraction could be used as construction materials , road surfacing, or cheap adsorbents of suitable pollutants.
Acknowledgements This work was financially supported by National 973 project of China (2011CB201501), Supported by Projects of International Cooperation and Exchanges NSFC (51161140330), Knowledge Innovation Program of the Chinese Academy of Sciences (NKSCX2-EW-G-1-5), and The Program of Guangdong Province - Chinese Academy of sciences strategic cooperation (2010A090100035).
Yin Chan: Journal of Environmental Management, Vol. 92 (2011), P. 223 [13] Uchimiya M, Wartelle L H, Klasson K T, Fortier C A, Lima I M: Journal of Agricultural and Food Chemistry Vol. 59 (2011), P. 2501 [14] Peng X, Ye L L, Wang C H, Zhou H, Sun B: Soil & Tillage Research Vol. 112 (2011), P. 159 [15] Shinogi, Y.
Communications in Soil Science and Plant Analysis. 1997, 28, 1845-1857 [18] Ischia M , Perazzolli C, Maschio R D: Journal of Thermal Analysis and Calorimetry Vol. 87 (2007), P. 567 [19] Xiaoge Chen, Jeyaseelan S: Journal of Environmental Engineering Vol. 127 (2001), P. 585 [20] Shen L., Zhang D.K: Fuel Vol. 82 (2003), P. 465 [21] Dominguez A., Menendez J.A., Inguanzo M: Bioresource Technology Vol. 97(2006), P. 1185

OEMA 2011 had drawn the attention of researchers from various disciplines: Photonics Materials and Devices, Optical Materials and Devices, NEMS/MEMS Materials and Devices, Electronic Materials and Instruments, etc.
From which 160 papers have been accepted for presentation at the conference and will be published by TTP, in Advanced Materials Research (AMR) Journal (ISSN: 1022-6680), which is online available in full text via the platform www.scientific.net.
Xiao, South China University of Technology, china, on field of "Electronic Materials and Applications".
International Conference on Optical, Electronic Materials and Applications 2011(OEMA2011) is organized by Hunan Institute of Engineering, Hunan University of Science and Technology, Shanghai JiaoTong University, Chongqing Normal University, Wuhan University of Technology, Nanyang Technological University, Hebei Polytechnic University, and it sponsored by the fund from National Natural Science Foundation of China (NSFC).
Finally, we would like to thanks all the authors, speakers and participants of this conference for taking part in and contributing to the International Conference on Optical, Electronic Materials and Applications 2011.

Materials and Methods Materials.
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Evaluating the environmental risks of these manufactured materials is essential to assist relevant risk assessment and ensure safety of such bio-synthesised nanomaterials. 
Materials and Methods Chemicals.
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[11] Phull, AR, Abbas, Q, Ali, A, Raza, H, Zia, M & Haq, IU 2016, ‘Antioxidant, cytotoxic and antimicrobial activities of green synthesized silver nanoparticles from crude extract of Bergenia ciliata’, Future Journal of Pharmaceutical Sciences, vol. 2, no. 1, pp. 1-36
[12] Abdel-Raouf, N, Al-Enazi, NM, Ibraheem, IBM, Alharbi, RM & Alkhulaifi, MM 2019, ‘Biosynthesis of silver nanoparticles by using of the marine brown alga Padina pavonica and their characterization’, Saudi Journal of Biological Sciences, vol. 26, no. 6, pp. 1207-1215

Laws,1,3 Mark Gibson,2,3 Michael Ferry1,2 1Australian Research Council Centre of Excellence for Design in Light Metals and School of Materials Science and Engineering, University of New South Wales, Australia 2CSIRO, Process Science and Engineering, Bayview Av, Clayton, Victoria, Australia 3Advanced Manufacturing Cooperative Research Centre (AMCRC) aCorresponding author email: olga.biletska@gmail.com Keywords: Magnesium, Metallic glass composites, Microstructure Abstract.
In contrast with Mg-based crystalline materials, Mg-based bulk metallic glasses (BMGs) are known for their low density and high strength, which translates into a high specific-strength material.
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Zhang, Journal of Alloys and Compounds 478 (2009) 419-422

Finite element analysis model and constitutive parameters of materials.
According to the materials experiment mechanics performance we determine concrete and the steel bar construction curve parameters, and establishe the finite element analysis model with the different design variable target, as shown in Fig.2.
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The former includes costs accounting, procurement plan of raw materials and auxiliary materials and quality control.
The ERP module optimizes the resources dispatching including human, finance and materials and the operations management.
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Gao: Journal of Modern Machinery.
Heytler: Journal of Intelligent Manufacturing, Vol. 13 (2002) No, 2, pp.135-146

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