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Boškovićc Materials Science Laboratory, Vinča Institute of Nuclear Sciences, Belgrade, P.O.
Conclusions In conclusion, using β−Si3N4 seeds with a combination of yttria + alumina and ceria, respectively, has the potential to be a good aid for pressureless sintering of Si3N4 material.
Acknowledgement This work was supported with the Ministry of Science and Environmental Protection of the Republic Serbia, Project No. 1947.
Bošković, Journal of Materials Science 25 (1990), p. 1513
Kostić, Science of Sintering 24 (2) (1992), p. 125

However, it is possible to speed up the resorption by creating porosity inside the materials.
Water was added to both materials at a liquid-to-powder ratio of 0.32 mL/g to obtain a paste.
The apatitic phase (2θ=26º, 30.5º-33º) developed during the first two weeks for both materials.
Figure 4 shows the weight loss for the two materials during the 42 days in SBF.
Thereafter the strength decreased in both materials.

Introduction The main requirement for the geometric shape of the surfaces of fuel products is to ensure the tightness of the joints of parts consisting of various materials, one of which is high-hardness steels.
The Choice of Material and Coating of Cutting Inserts The most efficient cutting insert materials for intermittent milling of hardened steels are coated cemented carbides.
Abellan-Nebot, Study of face milling of hardened AISI D3 steel with a special design of carbide tools, The International Journal of Advanced Manufacturing Technology. 40(1) (2009) 12-25
Perry, The architecture and performance of compositionally gradient and multi-layer PVD coating, Material Science Forum. 163-165 (1994) 527–532
Makarov, Selection and appointment of optimal conditions for broaching workpieces from difficult-to-machine materials, Publishing house of Perm. state tech.

Microstructural Development in Bearing Steel during Rolling Contact Fatigue N.Mitamura 1,a , H.Hidaka 1,b and S.Takaki2,c 1 Basic Technology Research & Development Center, Corporate Research & Development Center, NSK Ltd, 1-5-50 Kugenuma Shinmei, Fujisawa 251-8501, Japan 2 Department of Material Science and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan a mitamura-n@nsk.com, b hidaka-hi@nsk.com, ctakaki@zaiko.kyushu-u.ac.jp Keywords: bearing steel, rolling contact fatigue, shear band, recrystallization, activation energy Abstract.
The quenched material with a martensitic structure was tempered at 443K for 7.2ks, and then subjected to rolling contact fatigue testing.
While, in materials without such defects, it is also known that marked microstructural changes occur after a long duration.
Experimental Procedure The material used in this study was a high chromium, high carbon martensitic steel, SUJ2 (SAE52100).
References [1]K.Furumura et al.: ASTM SPT 1327(1998)p.249 [2]Y.Murakami: NSK Technical Journal,No.15(2003)p.10 [3]K.Sugino et al.: Trans ISIJ, No.10(1970)p.98 [4]H.Swahn et al.: Metallurgical Trans.

Image Matching Using a Bat Algorithm with Mutation Jiawei Zhang1,a and Gaige Wang2,3,b,* 1School of Mathematics, Jilin University, Changchun 130012, China; 2 Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China; 3Graduate School of Chinese Academy of Sciences, Beijing 100039, China azhangjw90@yahoo.com.cn, bggw0122@163.com Keywords: image matching; differential evolution (DE); bat algorithm (BA) Abstract.
Price, Differential evolution - a simple and efficient adaptive scheme for global optimization over continuous space, Technical Report, International Computer Science Institute, Berkley, 1995
Price, Differential evolution-a simple and efficient heuristic for global optimization over continuous spaces, Journal of Global Optimization 11 (4) (1997) 341–359
Istanda, Bat algorithm inspired algorithm for solving numerical optimization problems, Applied Mechanics and Materials, 148-149(2012) 134-137
Vecchi, Optimization by simulated annealing, Science, 220(1983) 671–680

Shen: Advances in Non-destructive Testing for Lumber, Journal of Beijing Forestry University Vol. 31 (2009), p. 202-205
Dunlop: Testing of Poles by Acoustic Resonance, Wood Science and Technology Vol. 17, No. 1 (1983), p. 31-38
Olivito: Ultrasonic Measurements in Wood, Materials Evaluation Vol. 54, No. 4 (1996), p. 514-517
Lam: Nondestructive Evaluation of Veneer Quality Using Acoustic Wave Measurements, Wood Science and Technology Vol. 34 (2001), p. 505-516
Li: Wood Science (Northeast Forestry University Press, China. 1992).

Identification of volatile compounds in cooked meat of farmed obscure puffer (Takifugu obscurus) using SDE and HS-SPME combined with GC-MS Wei Wu a, Rong Wub , Ning-ping Taoc College of Food Science and Technology, Shanghai Ocean University Shanghai, China awuweihello@126.com, bwurong.2010@163.com, cnptao@shou.edu.cn Keywords: obscure puffer (Takifugu obscurus); volatile compounds; gas chromatography-mass spectrometry (GC-MS); odor activity value (OAV); relative odor activity values (ROAV) Abstract.The volatile compounds of cooked meat in farmed obscure puffer (Takifugu obscurus) were isolated by simultaneous distillation and extraction (SDE)and headspace solid phase micro extraction (HS-SPME), and analyzed with gas chromatography-mass spectrometry (GC-MS).
Materials and methods Samples and reagents The samples of farmed obscure puffer were obtained from Zhongyang Co., Ltd (Jiangsu, China).
Zhao Qingliang, Yin Ning: Journal of nanjing normal university (Natural Science Edition), Vol.22(1999), p.89-92 [3] P.
Li: Agricultural Sciences in China, Vol.9(2010), p.1689-1695 [5] H.
Mao:Proceedings of information technology and environmental system sciences(Publishing house of electronics industry,Beijing),Vol.2(2008),p.1217-1221

Materials and Methods Medium Enrichment medium.
Journal of Bioscience and Bioengineering, 2007, 103 (5): 486~490
Experimental Method of Soil Microorganism [M]．Beijing：China Social Sciences Publishing House,1983
Identification Manual of Common Bacterium[M].Beijing: China Social Sciences Publishing House, 2001: 62 ~ 65.
Beijing: China Social Sciences Publishing House,1997.

Development and Implementation of A Novel Digital Shot Sensor System Weitian Wang1,2,b, Quanjun Song2,a, Yuman Nie2, Buyun Wang2, Hongyu Ren3 and Yunjian Ge2 1Department of Automation, University of Science & Technology of China, Hefei, 230027, China 2Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, 230031, China 3College of Information and Electrical Engineering of CUMT, Xuzhou, 221008, China aqjsong@iim.ac.cn, bwwtwang@mail.ustc.edu.cn Keywords: Sensor system; Digital shot; Attitude information; Inertial measurement unit Abstract.
To measure and obtain the force applied by shot put athletes, the Robot Sensor Lab of Institute of Intelligent Machines, Chinese Academy of Sciences used analytical and experimental approaches to develop a three-axis force sensor and design a digital shot for coaching of shot put athletes [4].
The digital shot is made up of steel materials, and its size and weight in line with the specification standard of female shot put formulated by International Association of Athletics Federation, so as to provide shot put athletes and researchers a practical environment to conduct experiments, and the information acquired will be more accurately.
MS thesis, Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, China, 2001 [2] Maeda M, Shamoto E, Moriwaki T, et al.
Journal of applied biomechanics, 15(4): 429-442 [3] Ohgi Y.

Study on Properties of Pectinate Hydrophobically Associating Polyacrylamide Solutions Leiting Shi1, a, Xiaonan Li2,b, Wei Zhou3,c, Songxia Wang1,d, Qiong Yang1,e, Zhongbin Ye1,f and Jian Zhang3,g 1State Key Laboratory of Oil and Gas Reservior Geology and Exploitation, Southwest Petroleum University (SWPU), Chengdu, Sichuan, 610500, China 2Geology and Science Research Institute of Jiangsu Oilfield, Yangzhou, Jiangsu, 225009, China 3Research Center of China National Offshore Oil Corporation (CNOOC), Beijing, 100027, China aflygoslt@126.com, blixnan@joeco.com.cn, czhouwei4@cnooc.com.cn, dwangsongxia0527@126.com, eyangqionglily_7@163.com, fyezhongbin@163.com, gzhangjian@cnooc.com.cn Keywords: Hydrophobically Associating Polymer, Critical Hydrophobe Content, Viscosity, Rheological Property, Mobility Control Ability.
Experimental Section Materials and instruments.
Acknowledgement This paper was supported by the National science and technology Major project (2011ZX05024-004) and National High Technology Research and Development Program of China (863 Program: 2007AA090701-3) References [1] X.
[2] Shi Leiting, Ye Zhongbin, Zhang Zhuo et al.: Petroleum Science Vol. 7 (2010), p. 251-256
[5] Zhongbin Ye, Erqin He, Siyu Xie et al.: Journal of Petroleum Science and Engineering Vol. 72 (2010), p. 64-66.