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Materials and methods.Take carbon sample of 10 ml into a 100 ml-cone bottle, clean surface several times with 0.85% of saline solution to wash away organic matter adsorbed in biofilm surface and impurities loose attachment in order to prevent the measuring error.
This shows VAS value not only include active microbes but also include the inert materials such as polymer of active cells extracellular excretory and some organisms adsorbed by biological membrane.
To ensure the biological activity we must rewash reactor regularly which is useful to remove the attached inert material and aging biofilm, and to promote biofilm adsorbing nutrition and nutrient; at the same time can clean activated carbon surface and internal microporous approach, and recovery the activated carbon adsorption capacity so as to improve the biological activity. 3.
Acknowledgements The financial support of the Natural Science Foundation of Hebei Province (E2010001036) and Education Department of Hebei Province Science and Technology Project (Z2008416) are gratefully acknowledged. 
Abell: British Journal of Nutrition Vol. 100 (2008), p. 138 [4] David Stensel, Gang Xin: Water environment research Vol.80( 2008), p. 2228 [5] Timothy Ford,Jenny Jay: Environmental Health Perspectives Vol. 113 (2005), p. 187 [6] B.A.Knapp, J.Seeber: Bulletin of Entomlogical Research Vol.98(2008), p. 271 [7] Makoto Ikenaga · Rafael Guevara · Amanda L.Dean · Cristina Pisani · Joseph N.

Subsequently, the bill of materials (BOM) is generated for cost estimation purposes.
Some assumptions were made to choose the material and allowable weight to set the boundaries for analysis purposes.
Meanwhile, the strength of the new material should not be neglected.
Rosmuller and B.J.M., Ale, “Classification of fatal firefighter accidents in the Netherlands: Time pressure and aim of the suppression activity,” Journal of Safety Science, 2008, 46, page 282 –290
Las Vegas,” Available from: http://www.popularmechanics.com/science/roboticsl.

Effects of MgO Addition Level on Microstructure and Wear Resistance of Ni-WC Vacuum Fusion Sintering Coating Yanan Wanga , Liying Hanb and Xiaoda Wangc School of Material and Metallurgy, University of Science and Technology LiaoNing, Anshan, Liaoning, China, 114044 awynaskd@163.com, bkdhanliying@163.com, cwxd1982wxd@yahoo.com.cn Key words: MgO, Coating, Vacuum Fusion Sintering (VFS), Microstructure, Wear resistance Abstract.
Improving the tribological properties of materials and reducing the abrasion by adopting coating technology is very effective[5].
The authors also would like to thank the help from University of Science and Technology LiaoNing.
Materials Protection (2006), Vol. 39, No. 5, pp.46 ~ 48
Journal of Tribology (2002), Vol. 22, No. 1, pp.10 ~ 13.

Among thermal spraying processes, high velocity oxy-fuel (HVOF) thermal spraying coating has been widely adopted in many industries as a protective coating for various materials due to lower cost and ease of operation [1-3].
Experiments 2.1 Materials and Preparations The HVOF system was employed to spray WC/Co powder on the workpieces.
Miguel Journal of Thermal Spray Technology 2005; 14; 405-413
Journal of Alloys and Compounds 2009;467; 163–167
Applied Surface Science 2005; 245; 290-303

Acknowledgments This work was supported by the National Natural Science Foundation of China (No. 50875171), and the National 863 High-Tech Development Project (No. 2009AA04Z150).
Wang, "Fast Bezier interpolator with real-time lookahead function for high-accuracy machining," International Journal of Machine Tools & Manufacture 47, 2007, p. 1518-1529
Wang, "Real-Time NURBS Interpolator with an Optimal Feed for High-Speed Machining," Advanced Materials Research, vol. 69-70, 2009, p. 461-465
Li, "An Optimal Feed Interpolation Algorithm for High-speed Five-axis Machining," Materials Science Forum, 532-533:873-876
Cheng, "A real-time NURBS surface interpolator for precision three-axis CNC machining," International Journal of Machine Tools & Manufacture 43, 2003, p.1217-1227

After the assessment of material reorganization after annealing, the crystallographic structure of the closed pores surface is investigated.
Careful examination suggests that the superficial layer on the inner pore wall may not follow the same ordered crystalline structure as expected from the bulk material.
Surface science reports, 48(1-4), 1-51
ECS Journal of Solid State Science and Technology, 5(10), P556
Journal of The Electrochemical Society, 164(12), E337

Sample, Material, Procedure and data analysis The sample consisted of 176 students of two faculties in Eastern Slovakia, selected by convenience sampling.
In: Journal on law, economy and management, vol. 3, no. 1, 2013
Journal of Technology Research, 07, vol. 4 (2013), pp. 1-13, ProQuest Central
Journal of Service Science and Management, 10, vol. 7, no. 5 (2014), pp. 368-376, ProQuest Central
International Journal of Business and Social Science, 05, vol. 4, no. 5 (2013), ProQuest Central

These techniques are usually similar in that they add and bond materials to form the objects in a layer-by-layer fashion.
These technologies were initially created for plastic materials before being expanded to metals as well.
Materials Today: Proceedings, 49, 1980-1988
Applied surface science, 253(19), 8064-8069
Advances in Materials Processing and Manufacturing Applications: Proceedings of iCADMA 2020, 251-259.

Zhao: Gansu Agricultural Science and Technology, (2004) No.11, pp.22-23
Cao: Journal of Suzhou Vocational University, (2000) No.4, pp.16-18
Zhang: Journal of Jinan University, Vol. 8 (1998) No.2, pp.82-87
Zhao: Methods for Experimental Design (Science Press, China 2006)
Ren: Design and Optimization of Experiment (Science Press, China 2009).

[4] K.R Tsang, Moisture distribution in sludges, Water Science and Technology. 22 (1990) 135-142
J., Moisture distribution in sludge: Effects of polymer conditioning, Journal of Environmental Engineering. 125 (1999) 340-345
A., Effect of sludge cell disruption on compactibility of biological sludges, Water Science and Technology. 42 (2000) 119-126
Vaxelaire, Moisture sorption characteristics of waste activated sludge, Journal of Chemical Technology and Biotechnology. 76 (2001) 377-382
Werther, Ogada T., Sewage sludge combustion, Progress in Energy and Combustion Science. 25 (1999) 55-116.