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Study on the Numerical Simulation of Explosion and Impact Processes Using PC Cluster System Guanglei Fei , Jianguo Ning and Tianbao Ma 1State Key Laboratory of Explosion Science and Technology Beijing Institute of Technology Beijing, China fgL630@163.com Keywords: PC cluster; domain decomposition; explosion and impact; MPI Abstract.
MMIC-3D (Multi-Material In Cell for 3D) is core calculation model of EXPLOSION-3D (Three Dimensional Simulation Software for Explosion and Impact) [1–3] which is developed by our teams independently.
Based on finite difference Euler method, MMIC-3D can handle mixed cells existing three or more materials, which solve the difficult of multi-material disposal in three dimensional by Euler method, and realize numerical simulation for typical problem of the explosion and impact, such as air explosion, explosion in concrete, shaped charge jet etc.
Acknowledgment This work was supported by the National Basic Research Program of China (Grant No. 2010CB832706), and the Foundational of State Key Laboratory of Explosion Science and Technology (Grant No.
The International Journal of Supercomputer Applications and High Performance Computing, 1994, 8(3/4): 165—414

Texture is typically produced when no epitaxial relationship is possible between substrate and thin film material for instance during thin film growth on polycrystalline or amorphous substrates, or with amorphous buffer layers; the detailed features of texture depends on several deposition parameters, first of all the deposition temperature but also on the film thickness and growth kinetic [5].
The thermal stress is due to the difference in the thermal expansion coefficients of the coating and the substrate materials.
Scardi, "XRD line broadening and texture of thin films", in science and technology of Thin Films, edited by F.C.
Weber: Handbook of optical material (California: University of California, CRC Press) (2003), p. 117 [18] I.
Okewoye: Research Journal of Applied Sciences, Vol. 11 (2007), p.1170

Introduction Since the beginning of the 21st century, large-scale ships and marine structural steel, large bridge steel, oil and natural gas transmission pipeline steel have put forward higher requirements on the performance of steel materials.
A large number of studies have shown that refining grains is an effective means to improve the strength and toughness of steel materials, and adding rare earth elements into molten steel is an effective method for refining grains.
Nonferrous Metals Science and Engineering, 2014, 5(6): 53-59
Journal of University of Science and Technology Beijing, 2012, 34(5): 535-539

Among them, Zaitian Ke of China Academy of Railway Sciences did a 1:4 model investigation for the macro-axis force pile underpinning of Shenzhen Metro.
The constitutive model for material was linear elastic and elastic constant Pa.
Dead weight of upper structure achieved by defining the density of material and the gravity acceleration (9.8).Floor live load was 3.5kN/m2.In view of calculating settlement deformation, the normal value of load must be converted into permanent value,which multiplied by the factor of 0.5.Partial safety factor was no longer considerred.
Paper for Railway Science Academy.2003 [8] Hai Sun.Theoretical research and application for pile foundation prestressed balance underpinning [D] (In Chinese).Paper for Tongji university.2001 [9] Xiaogang Xiong,Jianqiong Jiang.
Design procedures and application for underpinning structure composed of piles and beams [J](In Chinese).Journal of South China University Of Technology.2004,32(1):85-89 [11] Weixing Feng, Wenzhong Han,Weili Ding.

It is assumed that the surface layer of the shotcrete is homogeneous and the material is isotropic, linear and elastic.
Tab.1 Mechanical properties of soil Tab.2 Concrete beam structure and mechanical properties of cells[5,6] The features of the soil value The acceleration due to gravity 18KN/m3 The internal friction angle 19° The cohesion 27KPa Expansion angle 10° The bulk modulus 3.55MPa The modulus of shear deformation 1.18MPa it is also assumed that the structure unit of soil nailing cable is made of homogeneous, linear and elastic material, the feature of the cable structure unit is as shown in table 3.
Acknowledgements This work was financially supported by the National Natural Science Foundation of China (51068026),the National Natural Science Foundation of China (51178122) ,the National Natural Science Foundation of China (41162009) and the Natural Science Foundation of Tibet Autonomous Region.
[4] Changwen Chen, Yong-jian Liu and Weicheng Wang:The Application of Composite Soil Nailing Walls in a Deep Foundation Pit (Journal of Guangdong University of Technology, China 2009)（In Chinese）,p.11

Jingshui Huang1, a, Yue Wen2,*, Asheng Cao, Haisong Li and Qi Zhou 1 Room 209, Shengtai Building, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China. 2 Room 301, Mingjing Building, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China.
Materials and methods 2.1 Aerobic sequencing batch reactors (SBRs) The laboratory experimental system consists of three parallel SBRs (total and effective volume: 4.0L/each, respectively), operated at 25°С & 35°С & 55°С.
Ganczarczyk: Water Quality Research Journal of Canada Vol. 33 (1998), p. 565 [11] X.
Yu: Environmental Science & Technology Vol. 41 (2007), p. 4620 [12] W.
Luo: Environmental Science & Technology Vol. 44 (2010), p. 4355 [14] X.

This project collects a schematic diagram of the main attractions in Qishan National Forest Park (2010), as well as the promotional materials（2010）from Nanyu state-owned forestry centre.
Journal of Fujian College of Forestry,2013
Jiangsu science and Technology Press,2008
Science Press,1998 [14] GB／T 18OO5— 1999, China forest park landscape resources grade evaluation
International Society for Environmental Information Sciences 2010 Annual Conference, 2010: 465–475.

Coupling Coordinative Degree of Tourism-Economy-Environment system——Take Resource-based Cities in Shanxi Province as a Case Peng Guo1, 2, a, Suocheng Dong1, b* 1Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China; 2University of Chinese Academy of Sciences, Beijing 100049, China aguop.12b@igsnrr.ac.cn, bdongsc@igsnrr.ac.cn Keywords: resource-based cities; tourism; regional economy; ecological environment; coupling coordinative degree Abstract.
Materials and methods Study area.
Acknowledgements This study was financially supported by the basic national science & technology specific projects (2007FY110300), Natural Science Foundation of China (41271556).
Yang, Research on development conditions and modes of industrial tourism in resource-based cities, Journal of Arid Land Resources and Environment, 10 (2009) 188-193

., Dolgoprudny 141700, Russian Federation 2Lomonosov Moscow State University, 1-51 Leninskie Gory, Moscow 119991, Russian Federation 3Institute of Problems of Chemical Physics, Russian Academy of Sciences, 1 Semenov av., Chernogolovka 142432, Moscow region, Russian Federation 4European Synchrotron Radiation Facility (ESRF), 6 rue Jules Horowitz, Grenoble 38043, France 5Institut Makromolekulare Chemie, Leibniz-Institut für Polymerforschung, 6 Hohe st., Dresden 601069, Germany 6Institut de Sciences des Matériaux de Mulhouse-IS2M, CNRS UMR 7361, 15 Jean Starcky, Mulhouse F68057, France amelnikov.al.pe@gmail.com, bmartin.rosenthal@esrf.fr, cerdmann@ipfdd.de, dkiriy@ipfdd.de, eivanov.da@mipt.ru Keywords: organic semicoductor, X-ray scattering, ultrafast chip calorimetry, structural reorganization.
Materials and Methods P3EHT was synthesized from 3-iodo-5-bromo derivative of the 3-(2′-ethyl)hexylthiophene using isopropyl magnesium chloride catalyst.
Acknowledgments The authors greatly thank the Ministry of education and science of the Russian Federation (contract № 05.605.21.0188 from 3 December 2019 (RFMEFI60519X0188)) for financial support.
Mitrofanova, Recrystallization and secondary crystallization in polymers, Polymer Science USSR. 28 (1986) 1011-1017
Wang, Nature of the double melting peaks of regioregular poly(3-dodecylthiophene), European Polymer Journal. 99 (2018) 284-288

Materials and Methods Overall codon usage patterns in UL55 gene Fig 1 Amino Acid Codon.
Schachtel: Journal of virology vol. 64(1990), pp. 4264 [18] M.
Cai: Progress in Natural Science vol. 18(2008), pp. 1069-1076 [20] R.
Gibson: Trends in Biochemical Sciences vol. 23(1998), pp. 403-405 [29] P.
Sueoka: Proceedings of the National Academy of Sciences vol. 85(1988), pp. 2653 [38] N.