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Photocatalytic performance of SnO2 prepared by different precipitants Sheng tian Huang * a, Jun bo Zhong b, Jian zhang Li c and Wei Hu d Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan, Sichuan University of Science and Engineering, Zigong, 643000, PR China a sth499@163.com, b junbozhong@163.com, c lyl63@sina.com, d huwei2113061@163.com Keywords: semiconductors; SnO2; powder technology; photocatalytic performance Abstract.
Yang, R.

Research on the Design of Intelligent Obstacle Avoidance Car Model Based on Ultrasonic Wave Yu ZHU1, a, Zhe-xin HAN1, Peng-kun SUN1, Tian-hao WANG2, Yin-han GAO2,b 1College of Instrumentation and Electrical Engineering,Jilin University,Changchun ,130061,China 2State Key Laboratory of Automobile Simulation and Control, Jilin University, Changchun, 130021,China azhuyu522@vip.qq.com; bgaoyinhan@sohu.com Keywords:Ultrasonic detection;Obstacle avoidance;Intelligent vehicle;Servo control Abstract—Based on the characteristic of an ultrasonic sensor that can sense the external environment, we design an intelligent vehicle with obstacle avoidance function.
[5] Wang Jian, Zhang Xiaowei, Yang Jin, Zan Xin, Liu Xiaoyong.

[12] He Li, Tian Li, Caiyan Li: ENVIRONMENTAL SCIENCE.Vol.29 (2008), P.48, In Chinese
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References [1] Ren Yi,Liu Mingshi,Tian Lianhui,et al.Biodiversity,Conservation and Management of Taibaishan Nature Reserve.Beijing:China Forestry Publishing House. 2006, pp.116-235 [2] Department of the national forestry bureau for wild animals and vegetation protection, guidelines for based on community natural resources co-management in nature reserves.
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Tian, S.
Yang, Y.
Tian, Nature Protocols, Vol. 8, (2013) p. 52-65 [16] J.

(In Chinese) [10] Qichuan Tian, Quan Pan, Yan Liang, Yongmei Cheng, Hongcai Zhang: Journal of System Simulation (S1004-731X), Vol. 18, No. 7 (2006), p. 1777-1780.
Yang.
(In Chinese) [14] Tian Qichuan, Li Ziliang, Liu Xirong, Li Linsheng: Journal of System Simulation, Vol. 21, No.

(In Chinese) [3] Zheng-wei Yang, Wei Zhang, Gan Tian.
(In Chinese) [6] Yun-chuan ZHOU, Yong-qiang HE, Ji-tian LI.

The drag reduction technology with nano ShUNP2-10 have been applied to six injection wells with high pressure but shortage of injection rate and five wells have effect of drag reduction.Two tests have been done in Tian 83-9 well in JS oilfield, and fig.6 shows the variations of injection pressure and daily injection rate before and after the nano ShUNP2-10 suspension had been injected the target formations While the daily injection rate maintain the same as before, the injection pressure reduced from 31.5MPa to 19MPa～29MPa in the first test and the validity period are over 10 months ,and the injection pressure reduced from 29.5MPa to 17.5MPa～27MPa in the second test and the expiry date is over 12 months.
Fig. 6 Production curve before and after the treatment with nano suspension in well Tian 83-9 Conclusions The ShUNP2-10 are a kinds of uniform high hydrophobic nanoparticles, and own good adsorbent activity and can firmly adsorbed on the core surface to form nanoparticles layers with micro- and nano-structure.
Acknowledgements This work was financially supported by NSFC (51274136 and 50874071),the China Postdoctoral Science Foundation(20090450687) and Innovation Foundation of Shanghai University（10040111004） References [1] Wang Keliang, Liang Shoucheng, Wang Cuicui: Advanced Materials Research, Vol.92(2010),p. 207 [2] JU Binshan, Dai Shugao, Luan Zhian et al: SPE 77938(2002),p. 915 [3] Gu Chunyuan，Di Qinfeng，Fang Haiping: Journal of Hydrodynamics Ser.B,Vol.19(2007),p. 365 [4] DI Qinfeng, GU Chunyuan, SHI Liyi, FANG Haiping: Drilling & Production Technology,Vol.30(2007),p. 91 [5] Lu Guang-zhong, ZHANG Jiang-qiao:.Journal of Functional Materials, Vol.37(2006）,p.1110 [6] CHEN Yi-ming, XIE Kai, ZHAO Da-fang, XIAO Jia-yu: Journal of Functional Materials,Vol.36(2005）,p. 903 [7] Wang li, Wang duo, Zhu gui-ru, Gao Cong-jie: Journal of Functional Materials,Vol.41(2010),p. 822 [8] Yang Jing, Chen Jie-rong: Journal of Materials Engineering,Vol.10(2008).p. 177 [9] Li Xiao-bing, Liu Ying: Journal

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