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Copreaux, Materials Science and Engineering A 250 (1998) 8-13
Suryanarayana, Progress in Materials Science 46 (2001) 1-184
Tidu, Journal of Material Science 43 (2008) 1241-1248
Materials Science and Engineering A 508 (2009) 148-155
Tsuchiya, Materials Science Forum 426-432 (2003) 859-864

Materials and methods Test materials The fragrant pear Sample: the samples tested from the tree of 12-years old in the fragrant pear orchard located on the campus of Tarim University.
Journal of Hebei Normal University of Science & Technology. 27(2), (2013), 33-36 [6] Q.
Journal of Fruit Science. 23(6), 2006, 798-800

College of Agricultural Engineering, Henan University of Science and Technology, Luoyang China, 471003 ) Keywords：Corncob; Elastic Modulus; Poisson's ratio;Strain Gauge Abstract:The Elastic Modulus and Poisson's ratio of corncob were Measured by electrical method.The sensor was electric-resistance strain gauge.When the corncob was applied by force,the strain of corncob transformed into resistance changing of the sensor.Then,measure the resistance by SINOCERA YE253 programmable static strain gauge and transmit the resistance into the strain.It was found that the Elastic Modulus of corncob under the moisture content of 10.5% is 1.208×109 Pa and the Poisson's ratio is 0.33.
Introduction The corncob is easy to be broken during the process of threshing.The broken corncob is not good for the separation and cleaning of kernels.So,it is a meaningful thing to study the force nature of corncob for threshing corn ear.The material of corncob is similar to the material of wood.Both of them are heterogeneous material.As for the regular pattern of corncob and wood,the test pieces could be regarded as elastomer when the test pieces were forced by small stress.Elastic Modulus and Poisson's ratio are important elastic constants of the test pieces.There are many methods to measure the elastic constants.For example,stretch meter method,laser speckle interferometry,ultrasonic method, electrical method and so on.Slikker started to measure the elastic constants of wood by electrical method in the 1960s[1].In China,Li Weizhe[2],Gong Meng[3],Shao Zhouping and Zhu Shan[4] had measured the elastic constants of northeast China ash wood, masson pine,fir.I have not seen a paper about
REFERENCES [1] Shao Zhuoping.Fracture Mechanics of Plant Material.Beijing.Science Press,2012
[4] Shao Zhuoping,Zhu Shan.Study on Determining the Elastic Constants of Wood of Cunninghamia lanceolata by Means of Electric Resistance- Strain Gauges.Journal of Anhui Agricultural University,2001,28（1）：32-35
[5] Yamaguchi I.A laster-speckle strain gage[J].Journal of Physics of E: Scientific Instruments,1981,14:1270-1273

Ion exchange resins are one class of materials that can effectively catalyze aldolization[1].
Experimental Materials.
Chemical Engineering Science , Vol. 59 (2004), p. 2881
Journal of Taiyuan University of Science and Technology ,Vol. 3 (2007),p. 251
Canadian Journal of Technology ,Vol. 29 (1994), p.243

The Impact of Cold Wave Strike on Thin-walled Concrete Structure Zhenhong Wang1, a , Zhaogang Wang 3, b, Guoxin Zhang 1, 2, c and Yi Liu1, 2, d 1 Department of Structures and Materials, China Institute of Water resources and Hydropower Research, Beijing 100038, China 2 State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, China 3Office of Beijing Flood Control and Drought Relief Headquarters, Beijing 100038, China a faithzhen@126.com, b wzg980805@163.com, c gx-zhang@iwhr.com, dl iuyi@iwhr.com Keywords: thin-walled concrete structure; cold wave; simulation computation; temperature control and crack prevention; thermal stress.
Conclusions (1) during the cold wave hits. concrete structure will have a greater tensile stress .In order to prevent cracks, attention should be paid during the cold wave on the surface of the insulation measures, and before the arrival of the cold, appropriate materials for surface insulation should be selected according to cold wave type and magnitude
Acknowledgements The author acknowledges the support provided by the National Natural Science Foundation of China (Grant Nos.50909105), Key Projects in the National Science & Technology Pillar Program(Grant Nos.2008BAB29B05) and Governmental public industry research special funds for projects(Grant Nos.200801007) References [1] G.
Journal of Hohai University, 2002, 30(5): 12-16
Journal of Hohai University, 2002, 30(5):48-52

Acknowledgement It is a project supported by basic research programs of Suzhou science and Technology Department - industrial application part (SYG201327) and 2012 Innovation Project of JiangSu Province.
A micromouse kit for teaching autonomous mobile robots[J], International Journal of Electrical Engineering Education, 2011,Vol.48(2):188-201 [2] Mishra Swati, Bande Pankaj.
Journal of Information and Optimization Sciences,2009,Vol.30(6):1197-1207 [5] Zhang Haoming, PEH lian Soon,Wang Yinghai.
Two axes micromouse PWM generator based on FPGA[J].Applied Mechanics and Materials Vols. 496-500:1674-1680
Design of a Edubot--Micromouse based on MCU+FPGA[J].Applied Mechanics and Materials Vols. 496-500:1664-1669

Natural gray granite was used as workpiece materials.
Song: Journal of Applied Mechanics, Vol. 63 (1996), pp. 121-127
Miyachi: International Journal of Machine Tools and Manufacture, Vol. 34 (1994), No.7, pp. 893-905
Glatzel: Key Engineering Materials, Vol. 250 (2003), pp. 21-32
Yu: Journal of Materials Processing Technology, Vol. 250 (2003), pp. 281-285

Materials and methods Study Area.
Since metal or metal alloy materials that contain Pb, Cu, Cr, etc. were used as raw material to produce mechanical and electrical products for machining industry in Chongqing, so some heavy metals might move from the material to the nearby soil.
The reason of the difference mentioned above might be due to the materials used by different factory were different.
Advanced Materials Research. (2011) [3].
Journal of Southwest Agricultural University (Natural Science). 28 (2006) 227-230

PAN nanofiber which are reinforced with nanomaterials had received much attention in electronic devices due to their potential applications as interconnection lines or gates materials in nanoelectronics, electrode materials for electrochemical capacitor cells, reinforcing fillers in nanocomposite material in polymer, metal and ceramics matrices, heterogenous electrocatalysis, rechargeable battery, hydrogen storage and many more [1, 2].
Journal of Power Sources, 181:155-160 [6] H.
Liu, Carbon Nanotube/Polymer Composites and Novel Micro- And Nano- Structured Electrospun Polymer Materials, PhD online Theses, Georgia Institute of Technology Atlanta, Georgia, 2009, 13-15 [10] B.G.
Pilehrood, P.Heikkilä, A.Harlin, Preparation of carbon nanotube embedded in polyacrylonitrile (PAN) nanofiber composites by electrospinning process, AUTEX Research Journal, 12 (2012) 1-12 [12] R.
Andrews, and M.C Weisenberger, Carbon nanotube polymer composites, Journal of Solid State and Materials Science, 8 (2003) 31–37 [13] R.P.

Material model is elasto-plastic body.
Yeh, Journal of Strain Analysis for Engineering Design, 42, 5 (2007), 315-324
Yang, Journal of Materials Processing Technology, 177, 1-3 (2006), 171-174
Kwan, Key Engineering Materials, 364-366 (2008), 949-954
Hassan, Journal of Materials Processing Technology, 213, 9 (2013), 1465-1474.