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	Molecular phylogeny and morphological diversity of inland Cladophora (Cladophorales, Ulvophyceae) from China 期刊论文 OAI收割 PHYCOLOGIA, 2018, 卷号: 57, 期号: 2, 页码: 191-208 作者: Zhu, Huan; Zhao, Zhi-Juan; Liu, Xu-dong; Song, Hui-Yin; Liu, Guo-Xiang \| 收藏 \| 浏览/下载：31/0 \| 提交时间：2019/07/03 Freshwater Cladophora ITS2 secondary structure Morphological diversity Phenotypic plasticity Phylogenetic analysis Species delineating
	Study on ultra-light secondary baffle for coaxial two-mirror telescope (EI CONFERENCE) 会议论文 OAI收割 2012 9th IEEE International Conference on Mechatronics and Automation, ICMA 2012, August 5, 2012 - August 8, 2012, Chengdu, China 作者: Zhang L.; Zhang L. 收藏 \| 浏览/下载：62/0 \| 提交时间：2013/03/25 The coaxial two-mirror telescope consists of two mirrors facing each other. Classical two-mirror arrangements are Gregorian and Cassegrain. These systems are usually applied to space telescopes and often have optical baffles to prevent stray light from entering the focal plane. The optical baffles consist of concentric rings suspended between the secondary and the primary mirror. The secondary baffle for a large two-mirror optical system is designed and analyzed in this paper. According to mission of a telescope the structure should have high stiffness and high reliability and light weight. Compared with invar aluminum alloy and titanium alloy carbon fiber composite is currently the best material in terms of weight-to-strength ratio. It also has advantages of high temperature tolerance and low thermal expansion. So carbon fiber composite is chosen as material to meet requirements of the coaxial telescope. In this paper optimization method based on finite element analysis (FEA) is used for design the secondary baffle. Minimum weight of the baffle is chosen as an objective function. Thicknesses of former tube and vanes are chosen as variables. Analysis results show that the designed secondary baffle has maximum diameter of 180mm total length of 120mm and weighs 142g. And its fundamental frequency reaches 651Hz. Therefore the baffle has many advantages such as ultra-light weight high stiffness and dimensional stability etc. The optimization method and the baffle design can be helpful to other coaxial telescopes such as Cassegrain Gregorian and their subdivisions. 2012 IEEE.
	Phylogenetic analyses of Fringillidae (Aves : Passeriformes) using mitochondrial tRNA gene sequences and secondary structure 期刊论文 OAI收割 JOURNAL OF BIOLOGICAL SYSTEMS, 2006, 卷号: 14, 期号: 3, 页码: 413-424 作者: Cui B; Ma F[*]; Wang X; Sun Y; Yu L 收藏 \| 浏览/下载：20/0 \| 提交时间：2010/08/24 Fringillidae mitochondria tRNA cluster secondary structure phylogenetic analysis
	Characterization and phylogenetic analysis of the chitinase gene from the Helicoverpa armigera single nucleocapsid nucleopolyhedrovirus 期刊论文 OAI收割 VIRUS RESEARCH, 2004, 卷号: 100, 期号: 2, 页码: 179-189 作者: Wang, HL; Wu, D; Deng, F; Peng, HY; Chen, XW 收藏 \| 浏览/下载：32/0 \| 提交时间：2010/10/13 HaSNPV chitinase characterization phylogenetic analysis secondary structure analysis
	FOURIER-TRANSFORM INFRARED-SPECTRA STUDIES OF PROTEIN IN REVERSE MICELLES - EFFECT OF AOT/ISOOCTANE ON THE SECONDARY STRUCTURE OF ALPHA-CHYMOTRYPSIN 期刊论文 OAI收割 Biochimica Et Biophysica Acta-Protein Structure and Molecular Enzymology, 1994, 期号: 2, 页码: 247-252 Chang, Q. L.; Liu, H. H.; Chen, J. Y. 收藏 \| 浏览/下载：10/0 \| 提交时间：2014/03/14 ftir reverse micelle alpha-chymotrypsin secondary structure vibrational analysis water conformation spectroscopy polypeptides peptides solvents enzymes systems