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Fink2,b 1 Radiation and Polymer Chemistry Laboratory, Institute of Nuclear Science and Technology, Bangladesh Atomic Energy Commission, P.
Introduction Over the last couple of years, ecological awareness and other environmental issues have led to the development of composite materials based on renewable resources such as natural fibers as environmentally friendly and low-cost alternatives for synthetic fibers and the use of plastics based on renewable resources for the development of true biocomposites.
It is also necessary to study of flame sensitivity of these composite materials, which is desirable not only for the useful insights it can produce but also for its fire-safety importance.
Experimental 2.1 Materials Polypropylene (PP), the block copolymer of ethylene (grade: Stamylan P 412MN40 of DSM) as matrix and PP maleic acid anhydride grafted co-polymer (MAPP, Fusabond P MD-353D, Du Pont) as coupling agent were used.
Comp. 4, (1985), p.186 [9] Abdullah-Al-Kafi, M.Z.Abedin, M.D.H.Beg, K.L.Pickering and M.A.Khan, Journal of Reinforced Plastics and Composites, Vol. 25, No. 6, (2006) p. 575

Low-k materials often employ porous structure to reduce the value of k(dielectric constant).
However, along with the porosity becoming larger, Low-k material turns more fragile.
The major process of the planarization of copper interconnection layer, CMP, will destroy delicate Low-k material.
Acknowledgements This work was supported by National Natural Science Foundation of China (No. 90923025).
[4] Guo Dongming, Kang Renke, Su Jiangxiu, Jin Zhuji: Chinese Journal of Mechanical Engineering.

Fig. 1 Three-dimensional model of the Chassis made in Pro-E wildfire Choosing materials and attribute.
Suitable material is fundamental to good design of this work, which relates with the demand meeting of tractor’s function, so the materials should be chosen appropriately while the frame structure of Chassis is well designed[5].
Load the Three-dimensional model of the Chassis into Ansys12.0, when materials and attribute chosen, grid division, and Chassis constraint are finished (refer to above paragraphs), load and proceed to finite element mechanics analysis.
(2) Where, : The shear yield stress of material, : The yield point of material.
Acknowledgements This research is funded by the Tianjin municipal Science Planning (07ZCKFGX011400).

Study on Mechanical Properties of Polyurethane Elastomers for Drum Scraper Jincui Zhang1,a, Xijun Liu1,2,b, Tiening Ma1,c 1College of Materials Science and Engineering,Qiqihar University, Qiqihar 161006, China 2Key Laboratory of Polymer Modification and Macromolecules Separation, College of Heilongjiang Province, Qiqihar 161006, China azhangjc0452@163.com, bliuxijun2002@163.com,ctieningma@163.com Keywords: polyurethane elastomer; drum scraper; mechanical properties; chain extender Abstract: Polyurethane elastomers (PUE) were prepared by casting method using the prepolymer and the chain extender.
In this work, the PUE for drum scraper were prepared by casting method choosing poly(tetramethylene glycol ether) (PTMG) and toluene diisocyanate (TDI) as raw materials, and 3,5-dimetylthio toluene diamine (DMTDA, product code E-300) as chain extender.
Experimental Section Materials.
Liu: Chemical Propellants & Polymeric Materials.Vol. 3(5)(2005), p.232
Xu: Journal of Materials Processing Technology.

Concrete had been a well known base material for construction worldwide.
Supplementary material such as silica fume or fly ash is very well-know to effectively reduce the total volume of pore.
Lime stone powder can also be used as a filling material to fill pores in concrete [4].
Experimental Procedure Materials used in this research consisted of Ordinary Portland cement (Elephant brand, complying with ASTM Type I, manufactured by Siam Cement Co., Ltd.), river sand, coarse aggregate (MSA 25mm) had specific gravities of 2.70 and water absorptions of 0.38%., water, Superplasticizer (Sika® ViscoCrete® -10, polycarboxylic acid-based) and quarry dust collected from the quarry industry located in The East of Thailand.
ARPN Journal of Engineering and Applied Sciences 4(4): 83-89 [4] Menadi B., Kenai S., Khatib, J., Aı¨t-Mokhtar A. (2009),"Strength and durability of concrete incorporating crushed limestone sand" Construction and Building Materials 23 (2009)

Study on the Recognition of the Registration Marks for Low-Energy Microcolumn Lithography Seungjoon Ahn1,a*, Ho Seob Kim 1,b , Dae-Wook Kim 1,c and Seong Joon Ahn2,d 1 Department of Physics & Advanced Material Science/CNST, Sun Moon University, Korea 2 Division of I&C Engineering/CNST, Sun Moon University, Korea a sjan@sunmoon.ac.kr, bhskim3@sunmoon.ac.kr, cphykdw@sunmoon.ac.kr, d sjahn0@sunmoon.ac.kr Keywords: Low-energy lithography, microcolumn, recognition of the registration mark, PMMA resist, SiO2/ITO.
Besides, the low-energy electrons make little mechanical damage to the materials being processed and have very small proximity effect caused by electron scattering that results in degradation of image quality.
Therefore the BSE intensities are different each other according to the materials where the back-scattering take place, and it would be desirable to select the materials of the substrate and registration mark whose attractive forces on electron are different very much.
Materials Line ① Line ② Line ③ Line ④ Average SiO2 42500 52500 55000 57500 51875 Si 15000 20000 15000 20000 17500 ITO 42500 50000 45000 30000 41875 Glass 25000 30000 32500 22500 27500 Summary While the low-energy microcolumn lithography has great advantages as a future semiconductor processing technology, there are several problems remained.
Ahn: Journal of the Korean Physical Society Vol. 49 (2006), p.

In order to provide convenient, quick, safe and efficient traffic in winter, thawing-out materials with salt are often scattered to such as roads, bridges and city overpasses to thaw out ice or snow so as to prevent slipping.
There are usually two possible ways for chloride ion intrusion in concrete: one is impregnation with chloride ion in raw material or in other admixtures.
All the sources of chloride ion in concrete include in sea environment, industrial environment, raw materials and thawing-out materials.
Acknowledgements This work was financially supported by 2011Science and Technology Research Project of Beijing Municipal Education Commission (KM201110016012) and by Beijing Higher Institution Engineering Research Center of Structural Engineering and New Materials, BUCEA.
ACI Materials Journal, 2003, 100(2): 114- 119

Influence of Processing Parameters on Interfacial Heat Transfer Coefficient at the Metal-Die Interface of Die Cast AM50 Alloy Zhipeng Guo 1, a, Shoumei Xiong 1,b, Sang-Hyun Cho2,c and Jeong-Kil Choi2,d 1 Key Laboratory for Advanced Manufacturing by Materials Processing Technology, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China 2 Advanced Material R&D Center, Korea Institute of Industrial Technology, 994-32, Dongchun-Dong, Yonsu-Ku, Inchon, Republic of Korea a gzp04@mails.tsinghua.edu.cn, bsmxiong@tsinghua.edu.cn cchosh@kitech.re.kr, dcjk@kitech.re.kr Keywords: Interfacial heat transfer coefficient; High pressure die casting process; AM50 alloy Abstract.
The casting material is AM50 and the die material is H13.
Charles-André Gandin and Michel Bellet, TMS (The Minerals, Metals & Materials Society), 2006, p. 1205
Pehlke: Metallurgical and Materials Transactions Vol. 16B (1985), p. 585
Nef: Journal of Materials Processing Technology Vol. 169 (2005), p. 223

This positive link will enrich the understanding of the reader to the reading materials.
The teacher will make appropriate adjustments based on students' feedback, their understanding of the course and their needs to learn. 2.2 Classroom interaction Different from preview, classroom teaching is to complete the reading task, to deepen students' understanding of the materials to be learned.
JiTT approach encourages students to learn to focus clearly on the challenging problem of the reading materials.
Journal of Harbin University, 2002(2): 13-16.
Science and Technology Development and Strategy, 2002(12): 155-156.

Materials and Experimental Procedure Materials.
Ghosh, Inelastic effects on springback in metals, International Journal of Plasticity 18, 2002, pp. 769-785 [5] H.
Lee, Nonlinear elastic behaviors of low and high strength steels in unloading and reloading, Materials Science & Engineering A 562, 2013, pp. 161- 171 [6] Z.
Yakou, Forward and Reverse Rearrangements of Dislocations in Tangles Walls, Materials Science and Engineering 81, 1986, pp. 189-199 [10] L.
Hodgson, On the Bauschinger effect in dual phase steel at high levels of strain, Materials Science & Engineering A 643, 2015, pp. 127-136