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Effects of Yttrium on Microstructure and Mechanical Properties of in situ (Al2O3+Al3Zr)p/A356 Composites Bo Wang1, a, Yutao Zhao*1,b, Songli Zhang1,c, Gang Chen1,d , Xiaonong Cheng1,e 1School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, PR China awbbyr@126.com , bzhaoyt@ujs.edu.cn , czsl@ujs.edu.cn , dgchen@ujs.edu.cn , exncheng@ujs.edu.cn Key words: Yttrium, Aluminum Matrix Composites, In Situ Particulates, Mechanical Properties Abstract.
Introduction Recently, particle-reinforced aluminum matrix composites (PRAMMCs) become the focus for materials scientist due to their high strength, high specific stiffness, low density, high thermal conductivity and good thermal stability.
Acknowledgements This work was supported by the National 863 High-Tech Research and Development Program of China (No.2007AA03Z548), National Natural Science Foundation of China (No. 50971066), Jiangsu Province “333” Project Training Program (No.2008-46), Jiangsu University Research Funding for Advanced Scholar (No.1283000349) and Jiangsu Key Laboratory of Tribology Project of Jiangsu University (No. kjsmcx0903).
A Vol. 364 (1–2) (2004), p. 339 [7] Yutao Zhao, Guoxiong Sun: Materials Reserch (In Chinese) Vol. 15 (2001), p. 420 [8] Zhao Zhang, Yutao Zhao, Xiaonong Cheng: Special Casting and Nonferrous Alloys (In Chinese) Vol. 26 (2006), p. 512 [9] Bin Yang, Ping Gao, Baorong Zhao: Mechanical Engineering Materials (In Chinese) Vol. 30 ( 2006),p. 68 [10] C.Y.Kong, R.C.Soar: Mater.
Vol. 183 (2–3) (2007), p. 301 [13] Zhiqiang Zheng, Rongxi Yi, Keyan Chen: Journal of Nanchang University (In Chinese) Vol. 27 (2005),p. 10 [14] Haili Duan, Henghua Zhang, Guangjie Shao: Journal of Rare Earths (In Chinese) Vol. 23 (2005), p. 94 [15] Ting Du.

A novel process has been developed at the University of Waikato in fabricating Ti(Al,O)/Al2O3 composite powder and bulk materials [4].
To overcome this limitation, attempts have been made to use these composites as feedstock materials to produce composite coatings [5,6].
Zhang, Metal-matrix interpenetrating phase composite and its in-situ fracture observation, Materials Letters. 40 (1999) 156-160
Raynova, Characterisation of Ti(Al,O)/Al2O3 composite powders and thermally sprayed coatings, Advanced Materials Research. 29-30 (2007) 135-138
ASM International, Material Park, OH, USA, 1992

During the process of heat forming of cross wedge rolling, with the deepening of deformation and change in temperature, material’s microstructure will have dynamic, sub-dynamic, and static recrystallization, and other series of changes, in which dynamic crystallization is the principal means of material dynamic softening and grain refinement.
Hu: Journal of Plasticity Engineering, Vol.17 (2010) No.2, pp.79-84.
Peng: Study on the Forming Mechanism and key Technologies of Cross wedge rolling Asymmetric Shaft Parts (Ph.D., School of Mechanical Engineering University of Science and Technology, China 2011).
Lovell: Journal of Tribology of Transaction of the ASME, Vol.13 (2001) No.2, pp. 424-429
Guo: Computational Materials Science, Vol.17 (2002) No.2, pp. 209-218.

Raikar International Conference and Banthia- Basheer International Symposium on Advances in Science and Technology of Concrete.
Journal of Bridge Engineering, 11(2), 217–228
Journal of Applied Mechanics, 12, 159–164
Advances in Materials Science and Engineering, vol. 2016, 1–26
Proceedings of the fib Symposium 2019: Concrete - Innovations in Materials, Design and Structures, 1968–1976, International Federation for Structural Concrete.

The carbon nanotube materials were prepared to form the field emitters.
Many prototype of flat display device were realized by the CNT as cathode materials, which was called CNT-FED.
The CNT-paste was composed of carbon nanotube materials, inorganic binder and other organic vehicles.
Lee et al: Diamond and Related Materials Vol. 9 (2000), p. 1184 [7] F.
Zhu: Chinese Journal of Liquid Crystals and Displays Vol. 21 (2006), p. 232

It reveals that the content of Si3N4 at different parts of Si3N4 bonded SiC materials is distinct.
Raw Materials Preparation.
Sun, Kinetics of Chemically Activated Combustion Synthesis α-Si3N4 under Controlled Temperature, Journal of Inorganic Materials. 6 (2004) 1345-1352
Yen (Eds.), Materials Research Society, Pittsburgh, 1993, pp. 3-14
Yin, Self-Propagating High-Temperature Synthesis Technology and Materials, Metallurgical Industry Press, Beijing, 1995

Materials and Methods Strains tested 6 cultivated strains were gained from some research institutes（No.1-6），and 14 wild Auricularia auricula strains were collected from DaXing'anling region（No.7-20） Table.1 The tested strains and their locations Code Origin Strains East Longitude North Latitude Code Origin Strains East Longitude North Latitude 1 2 3 4 5 6 7 8 9 10 IAMHLJ IAMHLJ JiLin DongNing JiLin NEAU Cuifeng Huma Galahe Jiagedaqi H29 8808 YM1 DA2 916 DH1 CF HM GL 64 124°60′ 126°60′ 124°07′ 124°36′ 52°03′ 51°72′ 50°42′ 50°60′ 11 12 13 14 15 16 17 18 19 20 Jiagedaqi Guyuan Jiagedaqi Lingnan Hanjiayuan Tahe Shibazhan Songling Huma Huzhong LY XK8 JGDQ LN85 HJY TH 18Z SL HMSK HZ 124°02′ 124°41′ 124°83′ 124°75′ 126°41′ 123°70′ 125°33′ 124°42′ 126°62′ 123°36′ 50°42′ 51°95′ 50°53′ 51°72′ 51°69′ 52°32′ 52°41′ 51°93′ 51°22′ 52°02′ Purification of the tested strains and culture Tissue
Discussion Experimental materials in this study were collected from DaXing’anling where there were no cultivativation of Auricularia auricula around, which excluded the possibility of condamination by drift genes by cultivated resources.
Acknowledgements The authors thank financial support from Sci-tech Project of the 11th 5-year-plan of China (No.2008BADA1B01，No.2008BAD95B06-03)，Youth Foundation of College of Resources and Environmental Sciences，Northeast Agricultural University，Project of innovative & developmental team of Northeast Agricultural University（CXT003-2-1）.
References [1] XU X Y, YU M Y , LUO X ,JIANG N,ZENG J,ZHENG L Y.Molecular diversity of Auricularia polytricha revea led by AFLP and SRAP[J], Southwest China Journal of Agricultural Sciences, Vol 21(1).121-124(2008)
American Journal of Human Genetics, Vol 32. 314-331(1980)

Physical Parameters that Influence the Effectiveness of Ionizing Radiation at Low Doses Abubaker Ali Yousif1,a and Ismail Bin Bahari 2,b 1 Nuclear Science Programme, School of Applied Physics, FST, UKM, 43600 Bangi, Selangor, Malaysia E-mail: alghoul75@yahoo.com, Tel: +60172759427 2 Nuclear Science Programme, School of Applied Physics, FST, UKM, 43600 Bangi, Selangor, Malaysia Muhamad Samudi Yasir Nuclear of Science Programme, School of Applied Physics, FST, UKM, 43600 Bangi, Selangor, Malaysia Key words: Relative biological effectiveness; physical quality parameters; cell inactivation Abstract: Relative biological effectiveness (RBE) for the inactivation of V79 cells were determined using the initial slopes of survival curves (published in literature), the physical quality parameters are interpolated utilizing the standard values relevant to charged particles such as protons and heliums.
MATERIALS AND METHOD This study is based on secondary data from published materials [4, 5, 6, 7].
Kadri, “Physical quantification of the biological effectiveness of ionizing radiations”, International Journal of Quantum Chemistry, Vol. 3053, 501-520, 1990
Kadiri, Physical quantification of the biological effectiveness of ionizing radiations, International journal of quantum chemistry, 353, pp. 501-520, (1990)

Acknowledgement The authors would like to thank the financial support from subproject of new energy vehicle special project of Shanghai science & technology pillar program, research on structural design and manufacturing technology based on light-weighting of crash safety components of new energy vehicle under grant No.08DZ1150305.
[2] P.Akerstrom, G.Bergman, and M.Oldenburg: Modelling and Simulation in Materials Science and Engineering Vol. 15(2) (2007), p.105-119
[9] A.Turetta, S.Bruschi and A.Ghiotti: Journal of Materials Processing Technology Vol. 177(1), p. 396-400
[10] H.Wang, L.Gao and M.Q.Zhao: Journal of Shandong University(Engineering Science) Vol. 36(2), p.95-98.

Testing materials, equipment and programs test design In this work, the soil material was got at Qinghai Xiangpi Mountain section which belongs to 109th National Highway.
As a result, we cannot take full account of the material constitutive function of temperature change.
Beijing: Science press
Canadian Gedechnical Engineering Journal, 10(1): 25-40
Journal of Changan University(Natural Science Edi t ion) [J]Vol. 29 No. 5.Sep.2009.