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The essence of this technology is that a fine-dispersed powder or a mixture of powder materials are subjected to laser heat treatment, as the result materials with complex structure are synthesized.
This technology enables to produce either a part prototype or a part with set functional properties from nearly all materials and of different geometrical complexity.
Increasing of the efficiency of layer laser sintering of powder materials // Beam Technologies and Laser Application: Proceedings of the seven international scientific and technical conference. – SPb.: Publishing house SPbSPU, 2012. – 150 с
Avakumov, А.А.Gusev; Russian Academy of Sciences, Siberian subdivision, Institute of chemistry of solids and mechanical chemistry. – Novosibirsk: Academic publisher «Geo», 2009. – 155 p
Influence of mechanical activation on thermal capacity of tungsten metal powder // Letters to the Journal of physics of solids. 2012. – V. 38. – №11. – P. 26-30.

On the other hand, good mechanical properties can render machining of these materials difficult.
With the manufacture level and scale improvement of the C/C composite material, it will become the most important kind of materials used in high-tech industries, especially in aerospace field.
Rusinek: Cutting process of composite materials: An experimental study.
Materials & Design, 1997. 18(1): p. 11-15
NEW CARBON MATERIALS, 2000. 15(3): p. 38-42

This is important especially for materials used for casting the pistons (elevated work temperature).
AlSi9Cu3 AlSi12Cu1Fe Fig. 3 The microstructure of experimental materials in as-cast state, etchant HF.
Mrówka-Nowotnik, Intermetallic phase particles in cast AlSi5Cu1Mg and AlCu4Ni2Mg2 aluminium alloys, Archives of Materials Science and Engineering 38, 2 (2009) 69-77
Dahle, Development of new Al-Cu-Si alloys for high temperature performance, Advanced materials letters 8, 6 (2017) 695-701
Lee, The effect of solution treatment on incipient melting of Al2Cu intermetallic phase in lightweight materials, Materials Science forum 587 (2015) 256-260

However, it has become evident that understanding of grain growth is of increasing importance to development of advanced materials, not only ordinary polycrystalline materials, but also in nanostructured materials and thin film semiconductor and superconducting materials.
Steel, he was appointed Research Professor, Department of Materials Science and Engineering at the university of Pittsburgh, where he worked until his death.
He was one of the founders and editors of the International Journal of Texture of Crystalline Solids.
Lucke Chairman of the International Scientific Committee of ICGG Materials Science Forum Vols. 204-206 (1996) pp. xiii-xiv © I 996 Transtec Publications.
Switzerland Posthumous Manuscript An Historical Overview of Grain Growth in Metallic Materials Hsun Hu Department of Materials Science and Engineering University of Pittsburg, Pittsburg, PA 15261, U.S.A.

Environmental inspection culture is about concept of value, system and standards, behavior patterns and corresponding material representation that formed in long-term working of environmental inspection.
Lu: Environmental Inspection (China Environmental Science Press, Beijing, P.
Proceedings of Zhejiang Zhongxinbu Science Forum (2006), p. 417-421 (In Chinese)
He: Discussion on Environmental Law Enforcement in China, Chinese Journal of Population Resources and Environment Vol.20 (2010), p. 146-150 (In Chinese)
Lei: The Definition, Value, and Realization of Green Administration, Journal of Jianghan University(Social Sciences) Vol.22 (2005), p. 10-13 (In Chinese).

JOURNAL OF SICHUAN UNIVERSITY (ENGINEERING SCIENCE EDITION), 2008, 40(5):107-111(in Chinese)
Fire Science and Technology, 2005, 24(3):283-287(in Chinese)
China Safety Science Journa,2003,13(12):63-67(in Chinese)
China Safety Science Journa, 2006, 16(2):39-42(in Chinese)
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY, 2007,29(6):69-72(in Chinese).

[5] Nielsen S: Water and Environment Journal, 2007,19(4):296-305
[6] Jean L De Maeseneer:Water Science and Technology, 1997,35(5): 279-285
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Main material properties of the frame structure include Young’s modulus of 2.0×108kN/m, Mass density of 7.85×103 kg/m3 and Poisson ratio of 0.3.
The model errors for Scenarios 2 and 4 are simulated as random errors uniformly distributed within ±5% of the modulus of elasticity of material.
Acknowledgements This work was financially supported by the National Natural Science Foundation of China (51108130 and 50525823), Ministry of Science and Technology (2007AA042435), China Postdoctoral Science Foundation (20110491083) and Heilongjiang Postdoctoral Science Foundation (LBH-Z10180).
Li: Journal of Sound and Vibration Vol.291(1-2) (2006), p.215
Dehghana: International Journal of Computer Mathematics 82(9) (2005), p.1149

Introduction Transportation infrastructure beam is comprised of five major transportation modes depending on the material engineering facilities such as railways, highways, waterways, aviation and pipeline.
Construction of the QingXin railway will shorten the time between Qinghai and Xinjiang, promote dual material, passenger and information flow and is beneficial to both the comprehensive utilization of tourism resources and coordinated development.
Acknowledge This paper is co-sponsored by Western Light Project of Chinese Academy of Sciences and Innovation Program of Qinghai Normal University.
Journal of Qinghai Normal University (natural science) Vol. 4 (2005), p.102-104 [4] R.C.
Journal of Qinghai Normal University (natural science) Vol.4 (2007), p. 93-96 [7] The national tourism administration of the People's Republic of China: China Tourism Statistic Annual.

The weaving section length optimization based on the optimal velocity car-following model and symmetric lane-changing rule Liu Ximin1,2,3,a, Lu Shoufeng2,b 1Shanghai institute of applied mathematics and mechanics, Shanghai University, China 2Traffic and Transportation Engineering College, Changsha University of Science and Technology, China 3Key Lab of Road Structure and Material of Communication Ministry, Changsha aroadtrafficliu@126.com, bitslusf@gmail.com Keywords: traffic flow, weaving section length, optimal velocity car-following model, symmetric lane-changing rule.
Acknowledgements This work was financially supported by the project supported by the National Natural Science Foundation of China (71071024, 70701006), Key Project of Changsha Bureau of Science and Technology (K1106004-11), Hunan Provincial Natural Science Foundation of China(12JJ2025), Scientific Research Fund of Hunan Provincial Education Department(09A003, 11C0038), and Scientific Research Fund of Education Ministry (145),Open Fund of Key Laboratory of Road Structure and Material of Ministry of Transport (Changsha) (kfj100206).
Weaving section length analysis: A planning design approach, ITE Journal, (1990) [4] Hesham Rakha, Yihua Zhang.
Analytical procedures for estimating capacity of freeway weaving merge and diverge sections, Journal of transportation engineering(2006) [5] Lei li, Dong Liyun, Song tao, Dai Shiqiang, The study on the traffic flow weaving section in elevated road system with cellular automaton model, Acta physica sinca, Vol.55, No.4, (2006) ,p.1711-1717 [6] M.Bando, K.Hasebe, A.Nakayama, A.Shibata, Y.Sugiyama, Dynamical model of traffic congestion and numerical simulation, Physical Review E, Vol.51, No.2 (1995) , p.1035-1042