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Study on Band Gap Structure of One Dimensional Phononic Crystals Wang Yan-Lin1, a, Chen Ming-Wen2, b *, Wang Zi-Dong1, c * 1School of Materials Science & Engineering, University of Science & Technology Beijing, Beijing 100083, China 2School of Applied Science, University of Science & Technology Beijing, Beijing 100083, China aWYL1921@yahoo.com.cn, bchenmw@ustb.edu.cn, cwangzd@mater.ustb.edu.cn Keywords: Equivalent masses method; phononic crystal; band gap structure Abstract.
By changing a certain material component parameter or structural parameter respectively we analyze the vibration band gap structure under ensuring the density of the material A is bigger than the material B.
The result is consistent with the numerical results, there has some difference among them, the main cause is that the result obtained by using numerical analysis based on the model is continuously connected among the different materials, and the experimental model is connected by using the screw connection method.
Acknowledgment Work was supported by the National Natural Science Foundation of China (No. 10972030) and the metallurgy research fund of University of Science and Technology Beijing(No. 00009503).
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Research on alternative fiber raw materials is well underway and new tree species annual plant and residual materials have been proposed for pulping and paper production [5, 6].
Fig. 1: Proximate and chemical components of selective materials.
Use of Weeds and Agro-Based Raw Materials and their Blends for Handmade Paper Making.
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Introduction With the increasing people's standard of material and cultural life, and the in-depth development and popularization of body-building project, people pay more and more attention to their health problems in spare time.
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Abstract: One of the valuable problems of modern science and technology is to create a low-power (less than 1 mW), long-life (10-100 years) miniature sources of electric power based on the conversion of radioactive isotopes of energy into electricity.
Physical processes in semiconductor materials especially in silicon under the influence of electrons are known and well understood, it is possible to form the specific technical requirements for the design betavoltaic batteries with maximum efficiency of conversion of radiation energy at their minimum size.
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Materials and Methods Alginate microspheres were prepared using emulsification/gelation method [17, 19].
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Experimental program Materials.
The selection of the materials took into account previous works [8-10].
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Corrosion characteristics of transit pipeline API 5L X60 Jana Cervová1, a, Mária Hagarová1, b* 1Department of Materials Science, Faculty of Metallurgy, Technical University of Košice, Letná 9, 040 02 KOŠICE, Slovakia ajana.cervova@tuke.sk, b*maria.hagarova@tuke.sk Keywords: corrosion rate, natural gas, pipeline, soil Abstract.
Experimental material and methodology of experiments The investigated material in these experiments was steel API 5L X60.
The science of pipe corrosion: A review of the literature on the corrosion of ferrous metals in soils, Corrosion Science. 56, 0 (2012) 5-16
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Review: Electrical study of pipe - soil - earth system, Life Sciences Journal. 8, 2 (2011) 695-723.

The two-dimension transition metal oxides or conductive polymers will have the oxidation reaction on the electrolyte-materials interface, indicating these materials can be used in Faradic pseudo-capacitors[3, 4].
The single graphene has higher specific capacitance than other carbon materials.
Acknowledgements This research was funded by Science and Technology Key Project of Fujian Province(2014H0038) and Industry-University-Research Cooperation program of Fujian Province(2015H61010066) and Materials Science and Engineering Key Subjects of Fujian Province.
Science, 2011, 332: 1537-1541
A review of electrode materials for electrochemical supercapacitors[J].