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Influence Analysis of Roadway Friction on Shock Wave Attenuation He Ning1,a , Qin Bin2,b 1 Safety engineering college, North China Univ. of Science and Technology, Yanjiao 101601, Beijing, China 2 Beijing Institute of Technology, National Key Laboratory of Explosion Science and Technology, Beijing, 100081, China a ning_95@yahoo.com.cn, b Qinbin@bit.edu.cn Keywords: Friction effect; Friction coefficient; Shock wave Abstract.
Current standards generally use roughness as the only measurement criterion of friction coefficient and only steady air viscosity is considered, without considering wall material and roughness element density.
Journal of Chemical Industry and Engineering, 2008, (01) pp. 32–35
Journal of China University of Mining & Technology; 2006, (01) pp. 19–23 [5] Qu Zhiming, Sun Qiang, Li Jinxian.

Design and Implementation of JSP-Based Teaching Management System Zhongmei Zhang Yangtze Normal College of Education and Science, Chongqing, 408000, China zhangzm0412@vip.qq.com Keywords: JSP technology, teaching management system, design and implementation.
Introduction With the development of science and technology as well as advancement of the era, it has become an inevitable trend for colleges and universities to use computer for teaching management and improving teaching management level and efficiency.
Table 1 Database table composition Data sheet Functions Student Student information Teacher Teacher information Admin Administrator information Course Course information Liuyan Message board information Classes Class information Enrol Acceptance of applicant class Liebiao Learning material information 3.
Journal of Information And Computer, 2011 (6): 161-163
Journal of Yanbian University, 2011 (12): 22-27

Beijing Building Materials Academy of Sciences Research, Beijing, 100041, China) aEmail: srxlike@yahoo.com.cn; bEmail: zhangjixiu06@gmail.com Keywords: α-High-Strength gypsum plaster, expansion rate, retarder Abstract.
Test materials and test methods Materials and mix proportion In this study, α high-strength gypsum powder is the product of the Beijing Building Materials Academy, citric acid, tartaric acid and sodium pyrophosphate is as the AR.
Acknowledgements This work was financially supported by the National Science and Technology Support Program（2011BAE14B05） References [1] DAIYANLIANG，ZHENGJIANHE，LISUQING，WANGHONGLIANG Study on performance parameters affecting expansion of plaster mold—Problem of gypsum expansion (一) National Building Technology Journal—《Ceramics》，2004，167（1）：22 [2] LEIMEN G.
Southeast University (Science), 2004, 34(3): 356–360.PENG Jiahui, QU Jindong, WU Li, etal.
New Building Materials,2000(8): 13–15.LI Gengying.

If on one hand, its increase can contribute to the acceleration of the hydration in the case of Portland cement-based materials as in ACIII-E mortar, on the other hand, this cycling can generate differential tensions in the interface between the ceramic piece and the adhesive mortar, reducing its adherence.
Therefore, this work aims to investigate the effect of the thermal cycling in the adhesion of systems constituted of ceramic-adhesive-substrate coating, contributing to the understanding of use conditions of pieces in actual structures subject to cyclic thermal variations, besides contributing to the development of maintainable technologies through the use of alkali activated materials in substitution the traditional adhesive mortars.
Materials and methods In this work, a polished porcelanate was used.
Temperature had an adverse effect in the bonded ceramic systems, depending on the type of used adhesive material.
J. van Deventer: Journal Material Science, 42 (2007), p. 2917

Studies in Laizhou bay told function of salt lake mainly focus on materials supply[15].
Studies in Laizhou bay also told function of.fishing ponds was food supply and materials supply[15-16].
Chinese Science B ulletin, 45(10):870-876(2000).
Marine Environment Science, 12(2):36-42(2009).
Journal of Natural Resource, 18(2) :189-196(2003).

Preparation of Tools and Materials Tools that used in this research are cauldron for burning, beaker glass, measuring glass, pipet, digital scales, mortar, filter paper, sieve 200 mesh, furnace, ball milling, hydraulic press.
The materials in this research are rice straw (Oryza Sativa), aquades, KOH 10%, H3PO4 10%, alcohol 96%, and carbon conductivity paste. 2.
The velocity of milling will affect the size of that material.
The time of milling also affect the size of material [10].
Journal of the European Ceramic Society 13 (2): 113–19.

By B/GH ratio the brittleness of the material is determined.
Zuo, Advanced aluminum alloys containing rare-earth erbium, Materials Forum, 28 (2004) 197-201
Jin, Ab- initio calculation of mechanical and thermodynamic properties for the B2 based AlRE, Computational Materials Science,40 (2007) 226-233
Khanna, A modern integration of mechanics and materials in structural design.
Mechanics of Materials ISBN 0-12-383852-5, 62-72.

Therefore, oxygen is not only an important material for the growth, breath and capacity of aerobic microbes, but also one of essential raw materials for steroid oxidation (hydroxylation).
Beijing: Science Press, 1998(in Chinese)
Journal of Chemical Industry and Engineering(China),1999,50(3):417-420
Chinese Journal of Chemistry,1999,6:23-27(in Chinese)
Journal of Tianjin Universit, 2004,37(11):941-944(in Chinese)

Conclusion MWFs are among the most commonly used process materials in the metal working industry.
Journal of Occupational and Environmental Hygiene. 2006.
Journal of Materials Processing Technology. vol. 109. pp 181-189
Journal of Cleaner Production. vol. 7. pp 341-330
In: MITECH ´09: international scientific conference "Material science and manufacturing technology": proceedings / ed.

Shuman Chandra Saha, “An experimental investigation of pool boiling at atmospheric pressure” Journal of Science and Technology vol 6, pp. 80-85, 2011.
Pioro, “Experimental evaluation of constants for the Rohsenow pool boiling correlation” International Journal of Heat and Mass Transfer 42, pp. 2003-2013
Prakash, “Experimental evaluation of constants for the Rohsenow pool boiling correlation for khoa” Journal of Physical Sciences, Engineering and Technology vol. 2, pp. 21-26, 2011
Jaiswal, “Design based improvement in a three pan Jaggerymaking plant for rural India” International Journal of Engineering Research vol. 2, pp. 264-268, 2013
Nukiyama, “Maximun and minimum values of heat q transmitted from metal to boiling water under atmospheric pressure” Journal Society Mechanical Engineering 37, pp. 53-54, 367-374, 1934