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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

Materials and Methods The test material is 300M (40CrNi2Si2MoVA) ultrahigh strength steel bar, the hardness after vacuum heat treatment is 52~54HRC. 
Journal of Harbin University of Science and Technology, 2011, 06:73-76
Materials Science and Engineering: A, 2011, 528(13/14):4774-4782
Computational Materials Science, 2008, 42(3):470-477
Materials and Design, 2010, 31(2): 981-984.

Water balance is a very important part of material balance in desulfurization system.
China Environment Statistical Yearbook[M].BeiJing: China Environmental Science Press, 2011
Journal of Chinese Society of Power Engineering, 2010,30(9):695-698
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Journal of Power Engineering, 2003,23(2):2333-2337

Acknowledgements This work was financially supported by the project of National Natural Science Foundation of China (No. 51075314), Science and Research Planning Project of Educational Commission of Shaanxi Province (No. 2010JK621), and Research Foundation for Talented Scholars of Xi'an University of Architecture and Technology (No.
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Dobrzański1, b, L.Čížek2, c 1 Silesian University of Technology, Institute of Engineering Materials and Biomaterials, Konarskiego St. 18a, 44-100 Gliwice, Poland 2 VSB - Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering 17 listopadu 15, 708 33 Ostrava.
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Acknowledgements This work was financially supported by the National Natural Science Foundation of China (No. 50905056).
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The material strength of the bit body is worse than the tooth, when cyclic stress waves load on the bit, the tooth-hole is easily in fatigue failure.
Acknowledgments The authors thank the China National Science Foundation of China funding this research under contract 50874096.
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