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Materials and Methods Materials.
Raw materials are from Cayenne pineapple leaves planted in a growing base located in Xuwen County, Zhanjiang City and extracted by an independently developed semi-automatic sisal decorticator.
GB/T9995-1997 “Determination of Textile Materials’ Moisture Content and Moisture Regain Rate - Oven Drying Method” is adopted but some of its test steps are improved.
Major Science and Technology Projects of Hainan Province (ZDZX2013023-3) and Hainan Natural Science Foundation (NO. 513147).
Journal of Chinese Agricultural Engineering. 2000, 16 (6): 99-103

There are exists positive thermal expansion property for almost all materials.
Using the optimum combination of the fiber reinforcement and the polymer matrix, we may obtain some materials with high performance of thermal expansion property.
Therefore, The objective of this work is to develop the materials with negative or low thermal expansion property by using the high performance fibers.
The fibers are arranged in one direction, and the fabricated materials are unidirectional composites.
As for the other two materials of CFRP and AFRP, a low value of the CTE is observed. .

Preparation and properties of environmental friendly wood adhesives based on wild acorn starch Lulu Zhou 1, a, Chunrui Han1,b*, Shifeng Zhang1,c, Qiang Gao1,d, Hongyan Li1,e and Jianzhang Li1,f* 1 College of Wood Sciences and Technology; Beijing Key Laboratory of Wood Science and Engineering; Key Laboratory of Wooden Material Science and Application, Beijing Forestry University, Beijing 100083, P.
Experimental Materials.
The polyvinyl acetate emulsion has high mechanical stability.It can be well mixed with fillers, plasticizers, and other materials[11].
Wood Science.
Journal of Fujian college of forestry.

Journal of Polymer Science Part A: Polymer Chemistry 2010, 48 (2), 425-433
Journal of Polymer Science Part A: Polymer Chemistry 2010, 48 (3), 692-698
Journal of the American Chemical Society 1958, 80, 1339
Journal of Materials Science 1987, 22 (12), 4190-4198
Progress in Polymer Science 2007, 32 (3), 283-351

Materials and Design, 18: pp. 269-273
Materials Science and Engineering B, 148: pp. 82-87
Materials and Design, 31: pp. 3033-3037
Journal of Materials Science, 40: pp.3669-3676
Materials and Design,30: pp. 609-616

The pores are located between powder particles and induced stress concentrations into materials.
Understanding deformation mechanism is of importance to use this kind of materials for high loaded parts.
[3] N.Chawla, X.Deng: Materials Science and Engineering.
Yuan: Computational Materials Science Vol. 57 (2012), p. 48-58
Pharr: Journal of Materials Research Vol. 7 (1992), p. 1564-1583.

Shang d School of materials science and engineering, University of science and technology Beijing, Beijing 100083 China a wxm@mater.ustb.edu.cn, b hexl@mater.ustb.edu.cn, cyangsw@mater.ustb.edu.cn, d cjshang@mater.ustb.edu.cn Keywords: Ultra-fine bainitic steels, Relaxation-precipitation-controlling phase transformation (RPC), Refinement Abstract.
Naval Engineers Journal, Vol. (1990), P.63 [4] H.
Chinese Journal of Materials Research.
Journal of University of Science and Technology Beijing, Vol.11(2004), p.221 [7] Shang Chengjia, Wang Xuemin, Yang Shanwu, He Xinlai, Wu Huibin, Acta Metallurgica, Sinica.Vol. 39(2003), p.1019 [8] X.
He, Materials Science Forum, Vol. 426-432 (2003), p.1307 [11] S.Yang and X.

Wang: Materials Science and Engineering, Vols.
Schajer: Transactions of ASME, Journal of Engineering Materials and Technology, Vol. 110, (1988) p. 338 [8] G.S.
Schajer: Transactions of ASME, Journal of Engineering Materials and Technology, Vol. 110, (1998) p. 344 [9] D.
Smith: Journal of Strain Analysis, Vol. 37 No. 2 (2002), p. 125 [10] A.A.
Fischer:International Journal of Mechanical Sciences, Vol. 43 (2001), p. 2281 Trans Tech Publications Ltd Brandrain 6 Fax: +41 - 1 922 10 33 CH-8707 Uetikon-Zuerich e-mail: ttp@ttp.net Switzerland Web: http://www.ttp.net

Automated Extraction of Plant Viral RNA Using the Nucleic Acid Instrument Based on Magnetic Nanobeads Yongjie Dou1-2,a , Xiaoli Zhao3 , Jiansheng Xu1, Congliang Deng3 , Leng Nie1, Yang Yu1, Ming Wang1,b and Tao Song1 1 Beijing Key Laboratory of Bioelectromagnetism, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China 2 University of Chinese Academy of Sciences, Beijing 100190, China 3 Plant Laboratory of Beijing Inspection and Quarantine Center, Beijing 101300, China addouyongjie@163.com, bwangming@mail.iee.ac.cn Keywords: Magnetic Nanobeads; Nucleic acid extraction; Magnetic bead separation; Plant viral RNA Abstract.
Plant viral RNA extraction experiments and results The experimental materials.
References [1] Sonja Berensmeier 2006 Magnetic particles for the separation and purification of nucleic acids Appl Microbiol Biotechnol. 73 495–504 [2] Hawkins TL, McKernan KJ, Jacotot LB, et al 1997 A magnetic attraction to high-throughput genomics Science. 276(5320) 1887 ~ 1889 [3] Stefano R, Vago L 1999 Use of magnetic beads for tissue DNA extraction and IS6110 Mycobacterium tuberculosis PCR Mol Pathol. 52 (3) 158-160 [4] Flagstad O, Roed K, Stacy JE, et al 1999 Reliable noninvasive genoty—ping based on excremental PCR of nuclear DNA purified with a magnetic bead protocol Mol Ecol. 8(5) 879-883 [5] Jürgen Oster, Jeffrey Parker, Lotharà Brassard 2001 Polyvinyl-alcohol-based magnetic beads for rapid and efficient separation of specific or unspecific nucleic acid sequences Journal of Magnetism and Magnetic Materials. 225 145-150 [6] Melanie Störmer, Knut Kleesiek, Jens Dreier 2007 High-Volume Extraction of Nucleic Acids by Magnetic Bead Technology for Ultrasensitive Detection of
Roewer 2005 Optimization and validation of a fully automated silica-coated magnetic beads purification technology in forensics Forensic Science International. 152 13-22 [12] Hayato Miyachi, Atsuko Masukawa, Toshio Ohshima, Toru Hirose, Chaka Impraim and Yasuhiko Ando 2000 Automated Specific Capture of Hepatitis C Virus RNA with Probes and Paramagnetic Particle Separation J.
Journal of Molecular Endocrinology. 25, 169-193

Experimental Materials and chemicals.
The powdered material was extracted with distilled water (material to liquor ratio of 1:15) in thermostatted shaker bath at 60°C for 10h.The extract solution was filtered to give a dioscorea cirrhosa extract.
Journal of Donghua University (natural science) 2008; 34(4):396-400, in Chinese
Journal of Xi’an Polytechnic University 2009; 23(2):298-302
Journal of Guangxi University for Nationalities (Natural Science Edition) 2009; 15(7):38-42, in Chinese.