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Sechool of Materials Science and Engineering ,Shanghai Institute of Technology,Shanghai 201418,China； 2.Shanghai Second Polytechnic University, Shanghai 201209, China 3.
Using W L Roberts calculation, roll force is expressed by： (6) Where = yield stress; = average tension;= radius of deformed roll;= draught;= thickness at entry;= sheet width Therefore: (7) The partial derivative () is determined from rolling oil experimental value, it is: (8) It is concluded from field testing that after vibration the wave profile of vertical vibration is similar to simple harmonic wave, it can be regarded as cosine wave: (9) Where A = vibration amplitude;ω = vibration angular frequency;t = time Assume the fluctuate of thickness at exit is expressed by: (10) Where, h = thickness at exit;= mean thickness at exit Based on the continuity of material flow in the roll gap, the entry speed is: (11) Where,= the exit speed (rolling speed);= the mean entry speed
Iron and Steel Research Journal. 2001, 13(1):10-31 [2] J X Zhou, L J Xu.
University of Beijing Science and Technology Journal, 2000, 22(3):370-373

Materials and methods Site overview Mainly used for producing and operating sodium dichromate and chromic anhydride, the targeted contaminated site in this research is located at an industrial city in North China Plain.
Sampling and analysis On the basis of the investigation and analysis on the previous production history, raw materials, products, production process and pollution prevention and renovation measures regarding this site, a professional judgment method is adopted to set sampling points of maximum likelihood and representativeness for collecting topsoil samples and deep soil samples.
On the basis of the investigation and analysis of previous production history, raw materials, products, production process and pollution control measures regarding this site, the heavy metal environment quality of site soils is correspondingly analyzed through sampling monitoring.
(in chinese) [2] Sousa C D: Journal of Environment Management, Vol. 62(2001): p.131-154 [3] Manuel A E, Eugenio L P, Elena M C: Agriculture，Ecosystems and Environment, Vol. 123 (2008): p.247-260 [4] Xiaoxiao Sun, Ning Liu, Xin Qian, et al: Journal of Agro-Environment Science, Vol. 42 (2014): p.4012-4014.
[10] Yizhong Wu, Xiaoliang Tang, Ying Ge, et al: Journal of Agro-Environment Science, Vol. 30 (2011): p.2458-2466.

Duflou also thank the Belgian Science Policy (BELSPO) for financial support through the IAP contract P5/08.
Levebre, Advanced Materials Research Vols. 6-8 (2005), p487 [5] M.
Park, Journal of Materials Processing Technology 113 (2001), p654 [6] E.
Jeswiet, IMECHE part B, Journal of Engineering Manufacture Vol. 219 part B (2005), p204 [12] G.
Habraken, Advanced Materials Research Vols. 6-8 (2005), p525 [14] J.

Evaluation Study of Grounding Grids Based on Gray Clustering Jiangxia Cui 1, a, Jingyi Du 2,b 1 School of Electrical and Control Engineering, Xi’an University of Science and Technology, Xi’an 710054, Shanxi Province, China 2 School of Electrical and Control Engineering, Xi’an University of Science and Technology, Xi’an 710054, Shanxi Province, China aemail：cjiangxia@163.com, bemail：dujingyi@yom.com Keywords: Grounding grid, Corrosion, Gray clustering, MATLAB Abstract.
Journal of Sichuan Ordnance，2009，30（3）：46～49
Journal of Northwestern University.1999,29(6):551～554
Journal of Southern Institute of Metallurgy，1995，16（4）：63～68
Deng Basic Method of Gray System[M].Wuhan：Huazhong University of Science and Technology Press，2005

Srinivas2, b 1,2CO2 Research and Green Technologies Centre, Energy Division, School of Mechanical and Building Sciences, VIT University, Vellore -14, Tamil Nadu, India.
The proposed integrated power and cooling cycle consists of less material components compared to separate cycle as shown in Fig.1.
International journal of refrigeration. 24(2001), 856-859
Kalogirou, Solar thermal collectors and applications, Progress in Energy and Combustion Science. 30 (2004) 231–295
Y.Kaita,Thermodynamic properties of lithium bromide –water solutions at high temperatures, International Journal of Refrigeration.24(2001)374-390

Acknowledgements This work is financially supported by China Postdoctoral Science Foundation (20110490397).
Journal of China University of Mining & Technology, 2005, 34(4): 528-532.
A neuron-fuzzy technique for fault diagnosis in rotating machinery [C]. 2011 International Conference on Industry, Information System and Material Engineering, IISME2011.
Journal of East China University of Science and Technology (Natural Science Edition), 2006, 32(1): 90-93.
The Journal of Grey System, 1999, 11(3): 222

Material and methods Preparation of the SPI/CH composite films The SPI/CH composite films were fabricated according to the preceding research with a few modifications[2].
Journal of Food Engineering, 2005, 70(2) 205-210
Journal of Food Science, 2010, 75(6) C493-C497
Modern Food Science and Technology, 2008, 24(10) 24 (10) 969-972
Journal of Food Engineering, 2005, 70(2) 205-210

Acknowledgement It is a project supported by the Science Items of Henan Province China (082102240009), the Science Plans of Henan Ministry of Education China (2008A560004) and Young Teacher Plans of Henan Polytechnic University (649111).
Journal of Engineering Mechanics,2000,169-171
Journal of Harbin University of technology,2006,38(2):307-309.
Journal of Xi’an University of science and technology, 2008, 28(2):236-239(in Chinese)
Advanced Material Research,2011,Vol.168-170, pp1976-1980.

The Researching on Evaluation Analysis Model about Student's Study Quality Based on Web Yuanqiang Wang 1, a, Shangfu Hao 1,b , Zhihui Wang 1,c and Baili Sun 1,c 1 School of Information Science and Engineering Hebei North University, Hebei, Zhangjiakou 075000, P.R.China.
Acknowledgements This work was financially supported by the Higher Education Research Association of HeBei Province(gjxhz2011-25), Science and Technology Department of Hebei Province (112135119).
Education Journal. 2005,1(4):41-45
Education Journal. 2010,6(4):49-54
Journal of Changchun University of Science and Technology. 2006,29(3):37-41

Adoption of local construction materials has advantage of low cost, convenient drawing materials and full utilization of natural resource.
Hence, thatched cottages of Manchu residence mostly use reed and barnyard grass etc. as roof materials, and it is very convenient to draw materials.
A great number of construction materials used in Manchu residence are natural materials, which can be divided into two aspects, mineral property and plant according to physical property.
The frequently-used materials are timer, soil and stone etc[4].
Moreover, Manchu residence uses local materials and selects local materials that are easily acquired and used during construction, but in modern times, easy acquisition is to make them cheap through overproduction of building materials and to make it easily acquired through transportation support.