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Analysis on the characteristics of transient signal transmission based on GaAs materials Wei Liu1, a and Tian Lan2 1Department of Physics, Capital Normal University, Beijing 100048, China 2School of Opto-Electronic Engineering, Beijing Institute of Technology, Beijing 100081, China alwei263@263.net Keywords: GaAs semiconductor, Photoconductive switch, Ultra fast, Transmission model, Time resolution Abstract.
It is made up of the materials with high density of imperfection and extremely short carrier lifetime, including low temperature GaAs (LT-GaAs) and semi-insulating GaAs (SI-GaAs) etc, which make the photoconductive switch works in the range from nanoseconds to picoseconds.
Acknowledgment This work was financially supported by the following funds: (1) the Natural Science Foundation of China (No. 60772064); (2) the Beijing educational committee science and technology project (No.KM200810028007).
[5] Wei Shi and Li-qiang Tian: Chinese Journal of Semiconductor.
[9] Guo-you Ma, Tian Lan and Yin-chao Zhang: CHINESE JOURNAL OF LASERS.

Journal of Thermoplastic Composite Materials. https://doi.org/10.1177/08927057231222805
Journal of Composites Science. https://doi.org/10.3390/jcs8040115
Journal of Applied Sciences and Nanotechnology. https://doi.org/10.53293/jasn.2022.4745.1141
Advances in Science and Technology Research Journal. https://doi.org/10.12913/22998624/169468
Journal of Composites Science, 6(7), 209. https://doi.org/10.3390/jcs6070209.

Optical spectrum analysis of CuInSe2 Materials applied in Solar Cell Xuewen Wang 1, a, Zhouhu Deng 1,b, Yuan Zhang1,c 1 School of information science and technology, Northwest University, Xi’an City, 710127, China a wangxuew@nwu.edu.cn, bdengzh@nwu.edu.cn, czhangyuan@nwu.edu.cn Keywords: Solar Cell, CuInSe2, microstructure, absorptivity Abstract: Since CuInSe2 (commonly called as CIS) materials has become one of most important photovoltaic materials, they are investigated with optical spectroscopies in this paper.
Mathew, Quantitative assessment of optical losses in thin-film CdS/CdTe solar cells[J], Solar Energy Materials and Solar Cells, Vol. 96, 2012, Pages 231-237 [4] M.P.
Journal of Crystal Growth, 1997, 179: 503
Solar Energy Materials and Solar Cells, 1994, 32(1): 1-6
Journal of Physics and Chemistry of Solids, 2005, 66(11): 1855-1857

After more than half a century of development, there are dozens of already forming method of composite materials.
So the improvement of the process becomes the key to development process of advanced composite materials, the next step.
Raw materials also realizes diversification, the properties of the products can be designed.
Science ＆ Technology Information，2009 (22): 68 －71
Journal of materials research, 2001 (21): 44-47 [4] Yang Huaying..

Therefore materials having high reflectivity and thermal conductivity such as aluminium and its alloys are difficult-to-laser-cut materials.
Desplats: Comparison of the performance obtained with a YAG laser cutting according to the source operation mode, Journal of Material Processing Technology Vol. 42 (1994), pp. 341-348
Yadva: Laser beam machining – A review, International Journal of Machine Tools and Manufacture Vol. 48 (2008), pp. 609-628
Chryssolouris: An investigation of quality in CO2 laser cutting of Aluminum, CIRP Journal of Manufacturing Science and Technology Vol. 2 (2009), pp. 61-69
Ho: Grey relation for solving multi-quality characteristics problems of Taguchi methods, Journal of Technology Vol. 15(1) (2000), pp. 25-33

Thixoforming technology normally uses aluminum-silicon alloys such A356 and A357 as raw materials.
Young, Rheocasting, Materials Science and Engineering, Vol. 25. (1976). pp. 103-117
Nomura, Effect of semi-solid processing on solidification microstructure and mechanical properties of gray cast iron, Materials Science and Engineering A, V. 417A, (2006), pp. 166-173
Nofal, Microstructure, fluidity, and mechanical properties of semi-solid processed ductile iron, Journal of Materials Science, V.
Zoqui, Thixoformability of hypoeutectic gray cast iron, Journal of Materials Processing Technology, V. 212, (2012). pp. 1225-1235

Application of IR spectroscopy in WPC Matrix materials.
Filling materials.
The waste materials and branches of wood and bamboo, annuals and crops are the filling materials of WPC.
The shape of the filling materials can be fiber and chip.
Supplementary materials.

Comparison of long-term ageing of binary Ag-Cu alloys Krzysztof Labisz* Division of Materials Processing Technology, Management and Computer Techniques in Materials Science, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, Konarskiego Str 18A, 44-100 Gliwice, Poland krzysztof.labisz@polsl.pl Keywords: Long-term ageing, Silver alloys, Copper addition, Microstructure, Plastic Forming, Mint, Coin material.
Odqvist, Study of decomposition of ferrite in a duplex stainless steel cold worked and aged at 450–500 ◦C, Materials Science and Engineering A 499 (2009) 489–492
Borek, Microstructure evolution of C-Mn-Si-Al-Nb high-manganese steel during the thermomechanical processing, Materials Science Forum 638 (2010) 3224-3229
Borek, Hot-rolling of advanced high-manganese C-Mn-Si-Al steels, Materials Science Forum 706/709 (2012) 2053-2058
Dobrzański, Application of genetic methods in materials' design, Journal of Materials Processing Technology 164 (2005) 1607-1611.

Study on the Environmental Materials with the Emergency Rescue Procedures for Water Pollution Accidents Caused by Benzene Series Fire Yuanyuan Wang Kunming Fire-fighting Command School of public security fire forces, China wyuanking@tom.com Keywords: benzene series fire; environmental materials; water pollution accidents; emergency procedures Abstract.
Benzene series are important petrochemical materials, which are mainly used in the industry of pesticides production, dyes and explosives manufacturing.
In the process of extinguishment, 5000 tons of water and 28 tons of foam were consumed, because no effective measures are taken timely after the explosion, part of the leaked materials, the circulating water and the mixture of fire water at present and residual materials are discharged into the Songhua River.
Journal of science and technology information of China, 2005 (16) : 69 [3] Dongxi Xu.
Journal of water resources protection, 2006, 22 (2) : 76 ~ 79

Composite structure design is a progress of combining the mechanical performance with the materials design.
Discrete material optimization of vibrating laminated composite plates for minimum sound radiation, International Journal of Solids and Structures, vol 47(2010), pp2097-2114
Journal of Sound and Vibration, vol 316(2008), pp32-49
Discrete material optimization of general composite shell structures, International Journal of Numerical methods in engineering, vol 62(2005), pp2009-2027
Multiobjective stacking sequence optimization for laminated composite structures, Composites Science and Technology, vol69 (2009), pp983-990.