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Verification of UDEC Modeling 1-D Wave Propagation in Rocks Weidong LEI 1, a, Xuefeng HE2,b, Rui CHEN1, c 1School of Civil and Environmental Engineering, HIT Shenzhen Graduate School, Shenzhen, PRC 2Shenzhen Municipal Design and Research Institute Co.
Introduction The key to modeling discontinuity problems imposed by the presence of joints in the rock mass is to properly present the joints and their behavior in the numerical model.
Conceptual UDEC model and basic properties of the rock material A conceptual UDEC model is established as shown in Fig. 1 for the cases of 1-D wave propagation in an intact rock, across single rock joint and multiple parallel rock joints, where the length in the x-direction is 400 m, and the height in the y-direction is 2 m.
Table 1 Mechanical properties and wave propagation velocity in the rock Properties Value Density (ρ) (kg/m3) 2650 Bulk Modulus (K) (GPa) 44 Shear Modulus (G) (GPa) 39 Velocity of shear wave (m/s) 3830 Fig. 1 The conceptual UDEC model for cases of 1-D wave propagation in an intact rock, through single rock joint and multiple parallel rock joints 1-D wave propagation in an elastic medium According to the elastic wave theory, a 1-D planer elastic wave propagates in an ideally elastic medium without wave attenuation (no material and geometrical damping).

Growth and magneto-optical properties of Bi-substituted lutetium iron garnet films Huang Min1, a, Zhou wei-zhen2, b 1School of Information & Electrical Engineering, Zhejiang University City College, 51 Hu-zhou St., Hangzhou 310015, China 2Hangzhou 13 middle school, Hangzhou 310012, China aemail: huangm@zucc.edu.cn, bemail:zhouweizhen@126.com Keywords: iron garnet; LPE technology; magneto-optical effect.
Acknowledgement The research was supported by the construct program of the key discipline in Hangzhou.
Ubizskii, Magnetization reversal modeling for (111)-oriented epitaxial films of iron garnets with mixed anisotropy [J], Journal Magnetism and Magnetic Materials, 2000 (219) 127-141

Optimization of Culture Conditions, Separation and Purification of A Lipopeptide Biosurfactant from Pseudomonas palleronii S6X Lili Zhai1,a,Gongliang Zhang2,b ,Liming Sun2,c,Hongman Hou2,d,※ 1Dairy Engineering College, Baotou Light Industry Vocational Technical College,Baotou,Neimenggu,014035,China 2School of Food Science and Technology,Dalian Polytechnic University,Dalian,Liaoning,116034,China azhailili1981@163.com,bzhanggl1987@hotmail.com,c157313289@qq.com, dhouhongman@dlpu.edu.cn (conresponding author) Keywords: biosurfactant , culture conditions, separation, purification.
Materials and Methods Microorganism and Medium.The strain used in this study is Pseudomonas palleronii S6X, isolated from the Phylum Poriferain in South China Sea.
Effect of type of nitrogen source.The nitrogen source can be an important key to the regulation of biosurfactant synthesis.

Hereby the key step is the calculation of relative motion with known movement of the base (the floating body).
Engineering for the Maritime Environment 221 (2006) 81-96
Smart Materials and Structures 19 (2010) 1-7

Materials and Methods Research methods AQUATOX is a comprehensive ecosystem model that predicts the environmental fate and ecological risk of chemicals in aquatic ecosystems[8, 9].
It provides probabilistic modeling approaches by allowing the user to specify types of distribution and key statistics for any or all input variables.
[14] Hei Pengfei, Cheng Gang, Xia Jianxin: Basic Science and Engineering. 19: 69-76 (2011)

aamirk@uthm.edu.my, bmieonkyo@gmail.com Key Words: Booster, Diesel Engine, Biodiesel, Emissions, Palm Oil, Alternative Fuel Abstract.
Manshoor, Izzuddin Zaman, “Impacts of biodiesel storage duration on fuel properties and emissions”, Procedia Engineering, volume 68, 2013, Pages 225 – 230, Elsevier, 2013, DOI: 10.1016/j.proeng.2013.12.172
Manshoor, Izzuddin Zaman, Azwan Sapit, Mutalib Leman, “Effects of storage duration on biodiesel properties derived from waste cooking oil”, Applied Mechanics and Materials, Volume 554, 2014, Pages 494-499, DOI: 10.4028/www.scientific.net/AMM.554.494

The key of phase space reconstruction is embedded dimension of time sequences.
Advanced Materials Research, Vol. 734-737(2013),p.791-795
In Chinese: Chinese Journal of Rock Mechanics and Engineering.

Buildings in the mining area are locally designed and constructed, thus the undiversified architectural form, structure and material.
(Fig. 3) is one key project of Jilin the fifth five-year plan proposed by Jilin Coal Designing Institute in 1976 and constructed by Jiutai Shafting Building Engineering Department.
After becoming a subsidiary of Dongmei Company in 1983 Yingcheng Coal Machinery Factory began production equipment renovation with great changes in production pattern and products supplied to coal and building material industry all over China as well as exported to Canada and the United States.

Therefore, it is the key to improve efficiency of communication system of decrease communication congestion.
The minus change may be caused by inaccuracy of computation itself from establishment of statistical materials, so it can be seen as determined effect.
Y.: Closed Loop Control Based on Probability Drop Scheme of Multilevel Network, Computer Engineering, vol. 34, 2008, pp. 125-127

Study on the polarization reversal characteristics of a ferroelectric thin film with surface transition layers Lian Cui1,a*, Zhongyang Qiua, Zhiyou Hana, Ruiying Lia, JiXin Che 2,b, 1 Department of Physics, Daqing Normal University, Daqing 163712,China 2 Ordnance Engineering Department, Air Force Aviation University, Changchun,130022,China a* email: cl_19830422@126.com, bemail:chejixin@126.com Keywords: Ferroelectric thin film; Polarization reversal; Surface transition layer Abstract.
To meet the need of the miniaturization of ferroelectric materials particularly in microelectronic devices, the understanding of the size and surface effects on the polarization reversal in a ferroelectric thin film is greatly urgent [4].
The switching time is a key quantity, which is defined in several ways in the literatures.