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This paper, based on the strong sustainable principles, is derived from Jinan City’s statistics yearbook and statistical bulletin materials.
All the data used in this paper came from Jinan City’s statistics yearbook and statistical bulletin materials.
Acknowledgements This work is supported by Independent Innovation Foundation of Shandong University, IIFSDU (NO. 2011GN033), China Postdoctoral Science Foundation funded project (2012M511471) and Science and Technology Project of Shandong Province (2009GG10002006; 2010GSF10618).
Journal of Environmental Management.

The material is 40CrNi2Si2MoVA.
Asokan, R.Saravanan: Journal of Materials processing technology, 174 (2006), p.239-249
Cus: Journal of Materials Processing Technology, 173 (2006), p.281-290
Stocki: Introduction to reliability-based design, Institute of fundamental technological research, Polish academy of sciences
Sahin: Materials and design, 26 (2005), p.321-326.

Materials properties.
Details of materials properties are shown as Table 1.
Table 1 Materials properties in the model material properties Heat pipe Coolant Wheel Density[kg/m3] 0.5542 998.2 7850 specific heat capacity [J/kg·K] 2014 4182 490 Thermal conductivity [w/m·K] 3.9e4 0.6 46 viscosity [kg/m·s] --- 1.0e-3 --- Boundary conditions.
NCET-07-0435), State Major Science and Technology Special Projects (No. 2009ZX04014-046) and NUAA Research Funding (NS20100236, NZ2010004).
References [1] Ren Jing-xin, Kang Ren-ke, Shi Xing-kuan: Grinding of Difficult-to-cut Materials (National Defence Industrial Publications, China 1999) [2] R.A.

Lee, “Comparative study of high temperature workability of ZM21 and AZ31 magnesium alloys”, 2007, Metallurgical Science and Technology, 23-30
Duszczyk, “FE analysis of metal flow and weld seam formation in a porthole die during the extrusion of a magnesium alloy into a square tube and the effect of ram speed on weld strength”, 2008, Journal of Materials Processing Technology
Beggs, “Magnesium Alloy Applications in Automotive Structures”, 2008, Journal of the Minerals, Metals and Materials Society
Zhong, “Numerical and experimental study on the extrusion through a porthole die to produce a hollow magnesium profile with longitudinal weld seams”, 2008, Materials and Design 29, 1190–1198
Simoncini “Constitutive models for AZ31 Magnesium alloys”, 2008, KEY ENGINEERING MATERIALS Vol. 367, pp. 87-94

Therefore, the development of membrane materials has become the research focus.
Till now, the membrane materials mainly includes: PVA, silicone rubber, polyacrylic acid , chitosan, polyimide(PI), polysiloxane, and so on.
Experiments Materials.
PVAMC is a new membrane materials of pervaportion for dehydration of organic compounds.
Li, Journal of Functional Materials, Vol.38 (2007) , p.1339-1341

Raw materials and test methods Raw materials.
Because k, t and P are the inherent nature of the material, r is a fixed value.
[3] Andre Carles-Gibergues, Martin Cyr Marc Moisson and Erick Ringot: A simple way to mitigate alkali-silica reaction, In: Materials and Structures Vol. 41, Page: 73-83 (2008) [4] Shangjiang Chen, Xiaoyan Zhang and Shuhui Dong: Research on inhibiting alkali-aggregate reaction of slate aggregate, In: Architecture Technology at Low Temperature, Page: 19-21 (2009) In Chinese
[7] Anlei Zhu, Guhua Li, Yuanfu Li, Jingwang Gui, Xiaochun He and Yi Liang: The Active Alkali-Aggregate Characteristics of Slate Aggregate, In: Building Science Vol. 27 No. 5, Page: 50-53 ( 2011) In Chinese
[9] Alkali Activity of Aggregate Research and Test Center for Building Materials Industry: Test report NRAA-2009-0333 (2009) In Chinese

[10] A.K Hussein, S.H Hussain; Mixed convection through a Lid-driven air-filled square cavity with a hot wavy wall, International Journal of Mechanical and Materials Engineering, 5 2 (2010) 222-235
Bal; Heat transfer from a conducting hollow cylinder, Defense Science Journal, 39 (1989) 295-304
Jayaraj, M.A Ahmad; Conjugate forced convection-conduction heat transfer analysis of a heat generating vertical cylinder, International Journal of Heat and Mass Transfer, 45 (2002) 331-341
Deka; Chemical reaction effect on transient free convective flow past an infinite moving vertical cylinder, International Journal of Chemical Engineering, (2013) 9p
Boerner; Local Non similarity Boundary-Layer solutions, AIAA Journal, 8 (1970) 1936-1942.

According to methodology for system science, water resources security pre-warning operation mechanism should be included logical issues, a matter of time and knowledge (science).
The main analysis steps are: data collection- system analysis – system design – system implementation, 4 steps in total. ① Data collection Through systematic surveys and monitoring, concerning water resources security pre-warning object history, current situation and development trends materials and data has to be collected hardly, at the same time, the collected data has to verify in order to ensure the scientific and authenticity of collected data. ② System design According to the nature of water resources security problem and the requirements of system objective, a number of water resources security pre-warning approaches have proposed, each approach has listed its function indicators and explained conditions required and the main advantages and disadvantages. ③ System analysis Through the establishment of system function and objective for analysis model, corresponding with water resources security pre-warning objective and evaluation standard and comparing with all pre-warning
Water resources security pre-warning is mainly used the theory of natural science, the scientific theory, hydrology and water resources science theory, 3S and computer science and technology.
On time, it reflects analysis steps for solving engineering problems which probably has been through for each work phase; on knowledge, water resources security pre-warning mainly use system natural science theory, natural science theory, hydrology and water resources science theory, 3S and computer science technology.
Chinese Journal of Applied Ecology.Vol.4(1993),p.436-439 [11] Jiao Meiyan，Zhou Zijiang．Monitoring and warning of dust storms in China[J].Engineering Sciences.Vol.5(2003),p.1-6 [12] Guan Wenbin，Xie Chunhua.Framework of desertification pre-warning indicators[J].Journal of Beijing Forestry University.Vol.25(2003),p.79-83 [13] Wang Huimin．Theory and method of sustainable development system of River Basin[M]．Nan Jing: Hohai University Press.(2005) [14] Guo Anjun,Tu Meiceng.Study on water resources security pre-warning mechanisms[J].

Materials and Methods Design and synthesis of shRNA The full-length mRNA sequence of the SST precursor was obtained from GenBank and served as the target for the siRNA sequence. shRNAs were designed online (http://www.ambion.com/techlib /misc/siRNAfinder.htm1), and a basic local alignment search tool (BLAST) search was performed using the National Center for Biotechnology Information (NCBI) expressed sequence tags (EST) database to ensure that the siRNA construct would specifically target porcine SST.
Liao, "Nonpeptide somatostatin analogs: recent advances in its application and research," Journal of Medical Colleges of PLA, vol. 23, pp. 364-376, 2008
[6] .X.Y.zhu, et al., "Inhibitory effect of various siRNAs on expression of somatostatin gene in gastric cancer cell line BGC-823," Chinese journal of anatomy vol. 29, pp. 426-429, 2006
[7] [7] Q.Wu, et al., "Construction siRNA expression vector targeting somatostatin and its inhibition on somatostatin expression in vitro," Chinese Journal of Veterinary Science, vol. 28, pp. 276-280, 2008
Brummelkamp, et al., "A system for stable expression of short interfering RNAs in mammalian cells," Science, vol. 296, pp. 550-3, Apr 19 2002

Yin: Journal of Water Resources＆Water Engineering.
Xu: Advanced Materials Research.
Ning: Journal of Environmental Management.
Li: Shanghai Environmental Sciences.
Shi: Journal of Guilin University of Technology.