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This review paper describes the research and development for vehicle seats based on literature review of journals, technical reports and thesis.
It is further influenced by the property of the cushion material, type and nature of loading.
International journal of Industrial Ergonomics 40 (2010) 345–355; [2] Darliana mohamad, Baba md deros, Dzuraidah abdul wahab, Dian darina indah daruis and Ahmad rasdan ismail.
American journal of applied sciences 7 (7): 937-942, 2010; [3] T.c fai1, F.
Journal of engineering science and technology vol. 6, no. 3 (2011) 339 – 356; [6] Kamijo, k, Tujimura, H., Obara, H. and Katsumata, M. 1982, “Evaluation of Seating Comfort“.

The nanocomposites may be useful for supercapacitor materials according to the CV curves.
Acknowledgement This work was supported by the team of inorganic functional materials.
Heer: Science.
Mahayuddin: Journal of Materials Processing Technology.
Shan: Journalof materials chemistry. (2002), p1919.

There are essentially three methods for disposing of this by-product: discharging it into water; dumping it or utilizing it as raw material for chemical manufacture, for agricultural purposes or in constructional materials [5].
Cleaner phosphogypsum, coal combustion ashes and waste incineration ashes for application in building materials: a revies.
The using of waste phosphogypsum and natural gypsum in adobe stabilization.Construction and Building Materials. 2008, 22, 1220-1224 [6] Zhang Qian;Liu Shaowen;Wu Yuanxin.
Microstructure analyses of phosphogypsum generated by Brazilian fertilizer industries, Materials Characterization. 2008, 59,365-373 [11] Mohammad M;Smadi Rami; Haddad H.
;Rusch;Tingzong Guo;Roger K.Seals.Stabilization of phosphogypsum using class C fly ash and lime: assessment of the potential for marine applications.Journal of Hazardous Materials. 2002, B93, 167-186 [17] Samir I.

Experiments Materials.
Gypsum arose from raw materials.
Calcite came from raw materials and carbonation during storage.
Shi: Journal of Huaiyin Teachers College (Natural Science Edition) Vol. 4 (2005), p. 314-317 in Chinese [5] H.F.W.
LIU: JOURNAL of BUILDING MATERIALS Vol. 8 (2005), p. 646-652.

New materials such as plastics, fiber-reinforced composites and aluminium alloys have found their application into the design and manufacture of lighter, stronger and more reliable wheelchairs [9].
a) Stiffness K: The materials for the pinions and gears of the transmission are alloy steel and the values for the Poisson ratio and the Young’s modulus are: and .
The materials for the engaged gears are alloy steel and the meshing pairs are lubricated.
[14] Salmin Humaira, Design and Implementation of an Electric Wheel-Chair to Economize it with Respect to Bangladesh, International Journal Of Multidisciplinary Sciences And Engineering, 2014
[18] Tianxiang Mo, New Mechanism Used in Standing Wheelchair, Science Thesis in Mechanical Engineering, Karlskrona, Sweden, 2014

Materials Transactions Vol. 49 (10) (2008), p. 2170
Wennerberg: Cells and Materials Vol. 9 (1) (1999), p. 1
Gentle, (Ed.): An introduction to interfacial science.
Powers: Craig's Restorative Dental Materials.
Collings, Eds.: ASM - Materials Properties Handbook: Titanium Alloys, ASM International, Materials Park, OH, 1994.

Introduction Photonic crystals are composed of artificial lattices with periodic arrangements in dielectric materials, and they can exhibit forbidden bands in the transmission spectra of electromagnetic waves [1-4].
Terahertz waves are known to resonate with various types of saccharide or protein molecules; the wave is expected to impact the syntheses of biological materials through frequency excitations [11-16].
Ho, Journal of Applied Physics, 87 [1] (2000) 603-605
Clery, Science, 297 (2002) 761- 763
Pepper, Journal of Biological Physics, 29 [2-3] (2003) 257-259

We usually use the active control method to restrain its vibration .Piezoelectric materials with the advantages of wide working frequency, fast response, stable performance and strong electro-mechanical coupling effect, are widely used in flexible structure vibration control [1].
Closed-loop control equation of Piezoelectric laminated structures To achieve the active vibration control of flexible structure, we usually paste piezoelectric materials on the surface of the body structure as sensor and actuator.
Acknowledgements Supported by the National Natural Science Foundation of China (51109034).
(In Chinese) [3] Feng Qian: Journal of Vibration and Shock.2013,22（11）:161-166.
Dhuri, P.Seshu: Journal of Sound and Vibration. 2009, 323(3-5):495-514.

Microstructure and Properties of AZ31B Magnesium-LY12 Aluminum Alloys Diffusion-bonded Joint Shuang-ming DU and Qian QIN College of material science and engineering, Xi’an University of Science and Technology, Xi’an 710054, China College of material science and engineering, Xi’an University of Science and Technology, Xi’an 710054, China shuangmingdu@163.com, qianqincl@163.com Qian QIN Keywords: AZ31B/LY12, Diffusion bonding, Microstructure, Mechanical properties.
So the vacuum diffusion welding have received more attention in the welding of dissimilar materials, but it forms a series of MgxAly brittle intermetallic compound at the joint due to the very small mutual solubility of the two materials while welding Mg/Al by diffusion welding directly, which deteriorates the microstructure and mechanical properties of welding joint [5].
Research shows that, the middle layer of suitable material has a positive effect on inhibiting formation of brittle intermetallic compound between dissimilar metals, and is an important way to improve the welding properties of diffusion welding about dissimilar materials [6,7].
Aerospace Materials and Technology In Chinese, 2010, 4:1 - 4 [3] Ying Chen, Gaofeng Quan, Changbin Shen, et al.
Journal of Materials In Chinese, 2008, 12 (22): 346 - 348 [4] Hongzhou Fang, Jicai Feng.

We have carried out product parts and raw materials review, only C55 wire insulation material cross-linked ethylene - tetrafluoroethylene containing fluorine.
Chinese Journal of Engineering Design, 2017
Innovations in Corrosion & Materials Science, 2017
Materials Science Forum, 2017, 898:1478-1484
Materials Letters, 2016, 163:85-89.