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Synthesis of Nano-crystalline Magnesium Chromate Spinel by Citrate Sol-Gel Method Suping Li 1, a, Xiaolin Jia 1, b, and Yafang Qi 1 1School of Material Science and Engineering, Zhengzhou University, Zhengzhou 450052, China alisuping@zzu.edu.cn, bjiaxlin@zzu.edu.cn Keywords: Powder technology; Nanomaterials; MgCr2O4 spinel; Sol-Gel method Abstract.
Experiments Analytical reagent grade magnesium nitrate (Mg(NO3)2·6H2O) and chromium nitrate (Cr(NO3)3·9H2O) were used as starting materials, citric acid (C6H8O7·H2O) as chelating agent, and ammonia solution (NH4OH, 30%) were used to adjust pH of the solution.
Cheng: Journal of the Chinese Ceramic Society (1959), p.150-157 [3] Sh.Zh.
Yano: Journal of Nanoparticle Research (2006), p.911–917 [5] Y.Y.
Lu: Foreign Refractories, Vol. 31(2006), p.19-20 [7] Shinobu Hashimoto, Akira Yamaguchi: Journal of Crystal Growth (1995), p. 329-333

Journal of Materials Science Vol. 37(17) (2002), p. 3675-3683 [2] J.J.
Mechanics of Composite Materials Vol. 43 (2007), p. 9-28 [4] J.H.
International Journal of Fracture Fracture Vol. 23 (1983), p. 111-115 [10] J.F.
International Journal of Fatigue Vol. 35 (2012), p. 2-9

Study of wear properties in β-SiC(w+p)/Cu composite by hot-press sintering Tang Lilia, Hu Mingb, Shan Linc, Zhang Yunlongd* (College of Materials Science & Engineering, Jiamusi University, P.
Science Direct 2008;18:1076-1082
Materials and Design. 2008;30:376-386
Journal of Alloys and Compounds. 2011;509:6036-6042
Material Science Technology. 2005, 21(7):841-846.

All the other 9 raw materials were used to prepare the activated carbons by the same way.
Measurement of Lignin Content of Raw Materials.
(b) the lignin content of raw materials Fig. 2a shows the influence of raw materials (herbs) and activation methods on the methylene blue adsorption value of activated carbon.
Preparation and Application of Activated Carbon Materials. 1st Ed.
Effect of Activation Temperature on the Textural and Chemical Properties of Potassium Hydroxide Activated Carbon Prepared from Pistachio nut Shell [J].Journal of Colloid Interface Science, 2004,274:584-601 [8] Liu X, Xu L J.

Distribution Status of Trace Oxygen in Fe3Si-Si3N4 Mei Gaoa, Yong Lib, Haixia Qin, Bin Li, Jialin Sun, Junhong Chen, Wendong Xue School of Material Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China a545372581@qq.com, blirefractory@vip.sina.com Keywords: silicon nitride, gaseous silicon monoxide, Silicon oxynitride, flash combustion synthesis Abstract.
Introduction The ferro-silicon nitride (Fe3Si-Si3N4) was a new type of synthetic material in recent years, which was prepared by using flash combustion process from FeSi75 as raw materials.
Fig.2 (a) was the microstructure of the ferro silicon nitride material synthesized by the flashing combustion process.
Song, Synthesis and properties of ferro-silicon nitride and its application in carbon containning composites, University of Science and Technology Beijing, Beijing, 2011
Moulson, Reaction-bonded silicon nitride: its formation and properties, Journal of Materials Science. 14 (1979) 1017-1051.

The TOCBBTF members, HBEs and VBEs were all of Q345 steel in Chinese codes and coupon tests were conducted on materials taken from the members which may yield during the tests to determine its monotonic uniaxial material behavior (see Table 1).
Owing to the HBEs, VBEs and PT strands were designed to remain elastic, the tests were not conducted on these materials.
The member material properties were taken as the averages from all the coupon tests for each member.
Mao, New concept of structural seismic design: earthquake resilient structures, Journal of Tongji University (Natural science), 39(7): 941-948, 2011
Ricles, Behavior and design of posttensioned steel frame systems, Journal of Structural Engineering, 133(3): 389-399, 2007

Journal of Software.
Journal of Software.
Journal of Software.
Journal of Software.
Vol.19, No.5, May 2008. pp.1125-1133 Acknowledgement This paper is supported by National Natural Science Foundation of China (No.60072014), Natural Science Foundation of Shandong Province of China (No.ZR2009GM009), the Key Science-Technology Development Project of Shandong Province of China(No. 2009GG10001014) and Promotional Foundation (2005BS01016) for Middle-aged or Young Scientists of Shandong Province, SRI of SPED(J07WH05), DRF and UF(3XJ200903, XJ0609)of QFNU.

Theories of Formation Mechanism of High-angle Reverse Faults and Their Cause of Formation in Sanan Oil Field High-angle reverse faults form by many causes: the vertical differential flowing of orogenic belt materials under lateral compression, magma wedging into upper parts of the crust, the differential lifting and subsiding movements of the Earth’s crust [2].
(In Chinese) [3] Zhaonian Chen, Fajing Chen, Earth Science Frontiers. 2 (1995) 96-102.
Davis, Journal of Structural Geology. 26 (2003) 271-285
[7] Yadong Zheng, Jinjiang Zhang, Tao Wang, Journal of Geomechanics. 15 (2009) 209-217.
[10] Yongsheng Zhou, Changrong Xu, Chinese Journal of Geophysics. 52 (2009) 474-484.

Due to its properties such as thermal and acoustic insulation, buoyancy, low density, high impact absorbance, long durability and stress-cracking resistance, the cellular polymers are widely used because their potential applications in the automotive industry, building materials, medical, aeronautic and sports [2].
Materials Low density polyethylene (LDPE) from Pemex, México, with a density of 0.920 g/cm3, and melt flow index of 5 g/10 min; and ethylene vinyl acetate (EVA) Elvax® 460, with a density of 0.941 g/cm3 and melt flow index of 2.5 g/10 min, from DuPont & Industrial Polymers (USA) were used.
Xing, G.Wu, Journal of Supercritical Fluids, 47, (2008), p. 281-289
He, Polymer Engineering and Science, 48 (7), (2008): p. 1312-1321
Feng, Journal of Rheology, 48, (2003), p. 439-462

Experimental i) Chemical and materials Areca nut was obtained from Balik Pulau, one of the areas in Penang, Malaysia.
The material was crushed using mortar followed by sieved it through sieve no. (125 µm).
Lora, “Clays and oxide minerals as catalysts and nanocatalysts in Fenton-like reactions – A review,” Applied Clay Science, vol. 47, pp. 182–192, Nov. 2009
Zeng, “Adsorption removal of cadmium and copper from aqueous solution by areca: a food waste,” Journal of Hazardous Material, vol. 157, pp. 490-495, Sept. 2008
Sun, “Decolorization of KN-R catalyzed by Fe-containing Y and ZSM-5 zeolites,”Journal of Hazardous Materials, vol. 156, pp. 568–575, Aug. 2008