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Research on material properties and soil heavy metal pollution in cities with spread evolution model Yuan Fan 1, a, Minxing Xu 2,b and Weixin Lin 3,c 1 Wuhan University of Technology,2 Wuhan University of Technology,3 Wuhan University of Technology a490149870@qq.com, b2557013877@qq.com, c1012466821@qq.com Keyword: Heavy metal pollution Kringing interpolation Propagation model Partial differential equation Abstract: In this paper, mainly research the surface soil heavy metal pollution in cities.
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Acknowledgments Fund Project: "high-end CNC machine tools and basic manufacturing equipment" science and technology major project (2012ZX04005031).
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Using Maple to Study the Partial Differential Problems Chii-Huei Yu Department of Management and Information, Nan Jeon University of Science and Technology, Tainan City, Taiwan Email: chiihuei@mail.njtc.edu.tw Keywords: partial derivatives, differentiation term by term theorem, infinite series forms, Maple.
Therefore, whether in physics, engineering or other sciences, the study of partial differential problem has its importance.
These results will be used as teaching materials for Maple on education and research to enhance the connotations of calculus and engineering mathematics.
Yu: Partial Derivatives of Some Types of Two-Variables Functions, Pure and Applied Mathematics Journal , Vol. 2, No. 2 (2013), pp. 56-61
Yu: The Partial Differential Problem of Two Types of Multivariable Functions, Journal of National Taitung College, Vol. 2 (2013), pp.19-42

Acknowledgments This work was supported by National Natural Science Foundation of China (NSFC) under Grant No. 50904055, and the key technologies research and development program of Henan province under Grant No. 102102210379.
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Acknowledgement This work was supported by the National Natural Science Foundation of China under the Grant (No. 51105103), China Postdoctoral Science Foundation under the Grant (No.2012M510945, No. 2013T60362).
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Manganese catalyzed ozonation has received increasing attention recently for the degradation of organic materials [8].
Material and Methods Oxygen Tank Ozone Generator Gas Flow Meter Sample Reservior Feed Pump KI Trap Water Bath Contact Column Water Jacket Back Flow Catch Sample Outlet Exhaust Gas Gas Flow Liquid Flow Water Bath flow Fig. 1 Schematic diagram of ozone oxidation system Materials.
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