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Synthesis and Characterization of Iso E Super® Yuelin ZHU1, a, Jine WANG2, b, Changjian XIONG3, c 1 School of Material Science and Engineering, Beihang University, Beijing, China 2 School of Material Science and Engineering, Beihang University, Beijing, China 3 School of Material Science and Engineering, Beihang University, Beijing, China aylzhu@buaa.edu.cn, bsdwangjine@yahoo.cn, cxchj@buaa.edu.cn Keywords: Aldol condensation; diene synthesis; cyclization; Iso E Super®; organic synthesis ; ambergris Abstract.
The method used has the advantages of readily availability of starting materials, mild reaction conditions, convenient manipulation and moderately high yields, so it has a promising prospect in industrial production Introduction 1-(1,2,3,4,5,6,7,8-Octahydro-2,3,8,8-tetramethyl-2-naphthalenyl)ethanone, commonly referred to as Iso E Super®[1], is a an important synthetic perfume for its stability and unique properties[2].
Fig1.Synthetic route of Iso E Super® 2 Experimental 2.1 Materials and instruments Main materials: aldehyde, butanone (C.P.), myrcene; catalytic agent：KOH, AlCl3, H3PO4, oxalic acid; Solvent: Toluene (C.P.).
Column chromatography was performed using silica gel 60 (0.063–0.200 nm). 2.2 Materials preparation Myrcene was supplied by a corporation in the Guangxi Zhuang Autonomous Region of China.
Journal of Molecular Catalysis A: Chemical 1999, 148, 87-95

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Introduction Sawing with segmented diamond sawblades is the most widely used process for natural stone and other construction materials.
Many previous studies on the grinding of brittle materials with diamond mentioned the dependence of tool wear on the temperatures generated in the wheel-workpiece contact zone [1].
For grinding and sawing of granite materials, however, what is of most concern is the wear of the diamond tools rather than the thermal damage to the workpiece.
Luo: Journal of Materials Science Vol. 1245(51) (1993), p. 28 [3] W.
Xu: Key Engineering Materials Vol. 375-376 (2008), p. 549 [8] W.B.

Methods and Materials In the present study, cylindrical specimens of Hadfield steel were used.
Srivastava, K.Das, “Microstructural Characterization of Hadfield Austenitic Manganese Steel”, Materials Sciences, 2008, Vol. 43, pp.5654-5658
Song, “Eutectic Decomposition in Ca-Si Modified Austenitic Medium Mn Steel after Solidification”, Materials Sciences, 2005, Vol. 40, pp. 2081-2084
[12] P.W.Mason and P.S.Prevey, “Iterative Taguchi Analysis: optimizing the austenite content and hardness in 52100 steel”, Journal of Materials Engineering and performance, Vol. 10(1), February 2001,14-21
Tagore, “Experimental investigation on flow-forming of AA6061 alloy-A Taguchi approach”, journal of materials processing technology , 2008(200): 283–287 [14] Adem Cicek, Turgay Kivak, Gurcan Samtas, “Application of Taguchi Method for Surface Roughness and Roundness Error in Drilling of AISI 316 Stainless Steel”,Journal of Mechanical Engineering, 58(2012)3, 165-174.

It is best suited for machining hard, brittle materials [1-3].
Since the tool is usually made of metal materials, the mechanism of tool wear is different from the removal mechanism of the workpiece.
References [1] H.Hocheng, K.L.Kuo: Journal of Materials Processing Technology, Vol.123(2002), p.80-84
[4] LIU Yao,JI Xiao-me: Journal of electric power, Vol.24(2009), p. 402-404
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Study on microstructure and formability of laser tailor-welded joints of aluminum alloy thin sheet Yuntao Li1,2,a , Juan Ye1, b, Jinkui Wang3, c, Jishun Song1,2,d and Jian Zhang1,2,e 1School of Materials Science & Engineering, Tianjin University of Technology, Tianjin, 300384,China 2Tianjin Key Laboratory for Photoelectric Display Materials and Devices, Tianjin 300384,China 3TIANJIN MOTOR DIES CO., LTD.
Experimental Material and Method Experimental Materials.
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Introduction One major problem associated with the applications of polymers is their instability to weathering (light, temperature….) which results in a degradation of the properties of the exposed materials.
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Germanovich[3,4] and Wong [5,6] conducted uniaxial compression test by using specimens with several 3-D shape flaws which made of organic glass and other brittle materials and analyzed the impact of flaws on the mechanical properties.
Natural rock is a typical non-homogeneous material and it often contains different kind of flaws such as joints.
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At present, more researches have been done on the change of materials than the surface structure to improve the brake disc performance.
Set the materials of the brake disc and friction plates, as brake disc is HT200, friction plates are resin with reinforced composite materials.
Zhu, Research and discussion on mechanism of brake heat fading caused by friction materials, J.
Journal of Xihua University · Natural Science. 31 (2012) 31-34
Journal of Jilin University (Earth Science Edition). 42 (2012) 220-225

In general, compared with the carbonation and chloride attacking, the mechanism of sulfuric acid corroding concrete materials is more complex.
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