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Introduction Strontium bismuthates are high-potential photoactive materials.
However, it is known that photoactive semiconductor materials can be activated by radiation with photons which energy is less than band gap.
This study has made an attempt to evaluate temperature dependence of Urbach energy for two promising photoactive materials such as strontium bismuthates Sr2Bi2O5 and Sr6Bi2O11.
Journal of Alloys and Compounds. 658 (2016) 139-146
Photochemical & Photobiological Sciences. 15 (2016) 1289-1298.

Effect of Fe2O3 on the Sintering Property of MgO-CaO Refractory Wendong Xuea, Xiaoxiao Huangb, Jiaming Guoc University of Science and Technology Beijing, Department Of Inorganic Materials, China axuewendong@ustb.edu.cn,bhuangxiaoxiao6868@163.com,cthepanguo@163.com Keywords: MgO; CaO;Ferric oxide; Sintering.
The increasing of the calcium oxide content has great impact on sintering property and hydration resistance of the materials.
Experimental Raw materials Fused magnesite, dolomite, and ferric oxide were used as main raw materials.
The chemical composition of the raw materials is shown in Table.1.
Journal of the European Ceramic Society, Vol.29(2009),p.581

Plastic bags are one of the most widely used packaging materials in industries.
Journal of materials science, 48, 6746-6752
In Key Engineering Materials (Vol. 882, pp. 132-139).
ASM International, Materials Park, OH 44073-0002, USA, 1994. 305
Bulletin of Materials Science, 32(6), 589-595.

Introduction Growing difficulties in the provision of raw materials and high costs of expanding metallurgical production sharply set a number of urgent tasks for materials science and determined the following strategic directions in the development and creation of materials: - obtaining materials with the integrated use of raw materials with considering its availability; - development of progressive, environmentally friendly technologies for the production of constructional, tool, welding and surfacing materials from mineral raw materials without its deep technological processing and the approximation of such technologies to the places of extraction.
Journal of Advanced Materials (USA), (1) p. 75-78
Synergetics and fractals in materials science.
Basic aspects of transport mineralogical materials science.
Perspective materials, 1, p. 67-72.

Introduction Manufacturing is the process of converting raw materials, components, or parts into finished products through various techniques, tools and machinery.
The selection of materials for manufacturing is a critical aspect that directly impacts the performance, quality and cost of the final product.
The choice of materials depends on several factors, including the product's intended use, desired properties, manufacturing process and economic considerations.
[4] Vytautas Ostasevicius, Rimvydas Gaidys, Rolanas Dauksevicius* and Sandra Mikuckyte, Study of vibration milling for improving surface finish of difficult-to-cut materials, Strojniški vestnik - Journal of Mechanical Engineering 59(2013)6, 351-357
Gérard, New approach in diagnostics method for milling process using envelope analysis, World Academy of Science, Engineering and Technology International Journal of Mechanical and Mechatronics Engineering, Vol:5, No:11, 2011

More than 100 journal articles and dissertations have been searched recently.
How to consider effects of both geometric imperfections and physical imperfections (including material damage, crack defect etc.) on the structural stability will be a problem worthy of further study.
References: [1] Mamoru Kawaguchi, Masaru Abe, Ikuo Tatemichi: Journal of the IASS.
Vol. 24 (2003), P. 74-79 (in Chinese) [38] Cui Xiaoqiang, Guo Yanlin, Ye Keming: Journal of Tongji University (Natural Science).
P. 276-281 (in Chinese) [54] Wang Yongquan, Guo Zhengxing, Luo Bin, et al: Proceedings of the 1st Joint International Pre-Olympic Conference of Sports Science and Sports Engineering (Nanjing 2008).

China, 116024 2 Materials Center of Guizhou University of Technology, Guiyang, P.R.
Materials and Experimental method 2.1 Materials The substrate is Ti-6Al-4V alloy widely used for medical devices.
Acknowledgements LIU Qi-bin thanks Natural Science Foundation supported by Scientific and Technological Bureau of GuiZhou Province and is also grateful to State Key Lab for Materials Modification by Laser beam, Ion beam and electronic beam of Dalian University of Technology.
Xuebin Zheng, Chuanxian Ding (2000) J.Inorganic Materials, 15(5): 897-902 4.
Jiacheng Gao, Yapin Zhang, Jing Wen (1998) CHINESE JOURNAL OF MATERIALS RESEARCH, 12(2): 95-98 0.6% Y2O3 0.4% Y2O3 0.8% Y2O3 Fig.7 X-ray diffraction results of bioceramic coating with different rare earth contents 0% Y2O3 0.2% Y2O3 7.

Materials and Methods Vitamin A Palmitate (1.7 Million IU/g) was a gift of BASF Ltd (Ludwigshafen, Germany).
Leser: International Journal of Pharmaceutics 366(2009)170–184
Leser: Current Opinion in Colloid & Interface Science 15(2010)61–72
Boury: Journal of Controlled Release 146 (2010) 276–290
[19] Dong-Gon Kim, Young-Il Jeong: International Journal of Pharmaceutics 319 (2006) 130–138

Analysis of Water Consumption Intensity for Steel Production in China Anlong Lia*, Zhihong Wangb, Boxue Sunc and Siwen Gaod College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China a*381947902@qq.com, bwangzhihong@bjut.edu.cn, csunboxuexx@163.com, d769910301@qq.com Keywords: Steel industry, Water consumption, Water-balance model, Life cycle Abstract.
Journal of Cleaner Production 65(2014):108-119
Science-Technology Enterprise, 2015(8):89-89
Journal of Cleaner Production 139(2016):540-547
Research and application of exergy-based characterization model for water resource depletion in materials life cycle assessment [D], Beijing University of Technology, 2016

Zhai: Vehicle-Track Coupling Dynamics (Science Press, China 2007)(In Chinese) [2] H.
Beijing: China Academy of Railway Sciences, 2002(In Chinese) [4] A.Z.
China Civil Engineering Journal, 1999, 32(1): 26-30(In Chinese) [5] G.X.
Chinese Journal of Geotechnical Engineering, 2010, 32(5): 731-735(In Chinese) [7] Z.B.
Journal of Disaster Prevention and Mitigation Engineering, 2010, 30(1):53-57(In Chinese)