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Studies of Self-assembled Monolayers Formed by Imidazofine on Iron Surface by SEM and SECM

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Chinese Chemical Letters 2006年第12期17卷 1615-1618页

作者： Xiu Yu LIU Shen Hao CHEN Shuai MIAO Su Xiang WU Li Xia SHEN Yuan Xing CAI Hong Yan ZHAI deoartment of chemistry Shandong University Jinan 250100 State Key Laboratory for Corrosion and Protection Shenyang 110015 Shandong Academy of Sciences Jinan 250014

The self-assembled monolayers （SAMs） of imidazoline （IM） on the iron surface were characterized by scanning electron microscope （SEM） and scanning electrochemical microscopy （SECM）. The results showed that SAM... 详细信息

关键词： Imidazoline self-assembled monolayers (SAMs) SEM SECM.

Fullerene solar cells with cholesteric liquid crystal doping

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Chinese Physics B 2016年第9期25卷 153-156页

作者：姜璐璐蒋玉荣张丛丛陈泽章秦瑞平马恒 deoartment of Physics Henan Normal University Xinxiang 453007 China Henan Key Laboratory of Photovoltaic Materials Xinxiang 453007 China

This paper reports the doping effect of cholesteric liquid crystal 3β-Hydroxy-5-cholestene 3-oleate on polymer solar cells composed of the poly 3-hexyl thiophene and the fullerene *** a doping ratio of 0.3 wt%,the device achieves an ideal improvement on the shunt resistor and the fill *** with the reference cell,the power conversion efficiency of the doped cell is improved 24%.The photoelectric measurement and the active layer characterization indicate that the self-assembly liquid crystal can improve the film crystallization and reduce the membrane defect.

关键词： liquid crystal cholesteryl oleatea polymer solar cells active layer optimization

Adsorption and Diffusion of O Atoms on Ag(210) Stepped Surface

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Chemical Research in Chinese Universities 2007年第4期23卷 456-459页

作者： DIAO Zhao-yu ZHANG Xue-na WANG Ze-xin ZHANG Jing deoartment of chemistry Shandonx Normal University Jinan 250014 P. R. China School of Chemical and Biological Engineer Taiyuan Science and Technology Untverstty Taiyuan 030012 P. R. China

The O-Ag（210） surface adsorption system was studied via the five-parameter Morse potential theory. Mean- while, the 20-Ag （ 210） system was investigated v/a the extended London-Eyring-Polanyi-Sato （LEPS） potential theo- ry to learn the interaction between the adsorption states. Calculated results demonstrate that there are two stable on- surface adsorption sites（B and H） for 0 atoms on Ag（210） stepped surface. And the perpendicular vibrations are 30. 3 and 42.9 meV, which are close to that observed in high resolution electron energy loss spectroscopy （HREELS）. Also, there exists an octabedral subsurface adsorption state with a high vibrational frequency, and the interaction between the on-surface and subsurface 0 species is slight. The mode at 54.6 meV, which is close to that observed in HREELS（54-56 meV）, is because of the vibration of the 0 atom on B site under the influence of that on H site.

关键词： 5-MP LEPS Surface adsorption Vibration O-Ag(210) system

Scalable classification by clustering： Hybrid can be better than Pure

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High Technology Letters 2007年第2期13卷 131-135页

作者：邓胜春 He Zengyou Xu Xiaofei deoartment of Comouter Science and Engineering Harbin Institute of Technology Harbin 150001 P.R. China

The problem of scalable classification by clustering in large databases was discussed. Clustering based classification method first generates clusters using clustering algorithms. To classify new coming da-ta points, it finds the κ nearest clusters of the data point as neighbors, and assign each data point to the dominant class of these neighbors. Existing algorithms incorporated class information in making clustering decisions and produced pure clusters （each cluster associated with only one class）. We presented hybrid cluster based algorithms, which produce clusters by unsupervised clustering and allow each cluster associ- ated with multiple classes. Experimental results show that hybrid cluster based algorithms outperform pure ones in both classification accuracy and training soeed.

关键词： classification clustering data mining

GENERALIZED BAKER-HAUSDORFF FORMULA AND ITS APPLICATION

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Chinese Science Bulletin 1989年第15期34卷 1248-1253页

作者：井思聪阮图南 Department of Modern Physics Unioersity of Science and Technology of China Hefei deoartment of Modern Physics University of Science and Technology of China Hefei

Ⅰ. INTRODUCTION In quantum theories, we have to often make calculations of matrices. Baker-Hausdorff (B. H., for short,) formula is very useful in these calculations. Let A and B be two n-dimensional matrices, according to the B. H. formula, we may construct a new n-dimensional matrix C so that e^Ae^B=e^C. (1.1) In practice, we often expand the matrix C into a power series of A and B, whose first terms

关键词： Baker-Hausdorff formula B. H. generators

A DESCENDING PATHWAY OF ANALGESIA FROM NUCLEUS ACCUMBENS TO HABENULA

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Chinese Science Bulletin 1988年第4期33卷 337-341页

作者：于龙川石玉顺韩济生 deoartment of Physiology Belling Medica University

Previous studies in our laboratory have shown that there may be a mesolimbic loop of analgesia between periaqueductal grey (PAG) and the nucleus accumbens in the rabbit. This loop consists of an ascending analgesic pa... 详细信息

关键词： analgesia analgesic naloxone nucleus rabbit transmit utilizing morphine neuronal ascending

Alkaloids from Stems of Ervatamia yunnanensis （Ⅱ）

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Chinese Chemical Letters 2006年第6期17卷 783-786页

作者： Shuang LIANG Xin Gen LUO Hai Sheng CHEN Xiao Dong ZHANG Mao HUANG Wen Yong LIU College of Pharmacy Second Military Medical University Shanghai 200433 deoartment of Pharmacy Guangzhou Military General Hospital Guangzhou 510010 Center of New Drug Evaluation Institute of Basic Medical Sciences Second Military Medical University Shanghai 200433

Six indole alkaloids were isolated from the stems of Ervatamia yunnanensis. Among them, 10-hydroxy-19, 20-dihydroisositsirikine （I） is new. The other five are known alkaloids, namely： matrine （Ⅱ）, 19, 20-dihydroisositsirikine （Ⅲ）, 19-s-voacangarine （Ⅳ）, 1 l＇-methoxyl-19s- heyneanine （Ⅴ）, conodurine （Ⅵ）. The structural elucidation of the alkaloids was based on spectral means.

关键词： Ervatamia yunnanensis indole alkaloids.

GLOBAL SOLUTIONS TO THE CAUCHY PROBLEM OF QUASILINEAR HYPERBOLIC PARABOLIC COUPLED SYSTEMS

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Science in China,Ser.A 1987年第11期 1133-1149页

作者：郑宋穆沈玮熙 Institute of Mathematics Fudan University Shanghai deoartment of Mathematics Fudan Univeristy

In this paper we consider the Cauchy problem of a class of quasilinear hyperbolic parabolic coupled systems. First, we derive the Lp decay estimates of solutions for the corresponding linearized problem, and then on the basis of these Lp decay estimates, delicately deriving the uniform a priori estimates of solutions to nonlinear coupled systems, we establish the global existence, uniqueness of smooth solutions and the decay rates as t→+∞. We also apply these results to the Cauchy problem for the systems of thermoelastic ty and radiation hydrodynamics.

关键词： GLOBAL SOLUTIONS TO THE CAUCHY PROBLEM OF QUASILINEAR HYPERBOLIC PARABOLIC COUPLED SYSTEMS

A Formula for Calculating Deviation of Computed Tomography-Guided Puncture Point

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Chinese Medical Journal 2018年第17期131卷 2119-2121页

作者： Na Su Xing-Can Chen Yong-Qiang Zhang Miao Liu Dong He deoartment of Radioloav The 117 Hosoital of the Chinese People's Liberation Army Hangzhou Zhejiang 310013 China Major in Imaging and Nuclear Medicine School of the 1^st Clinical Medical Sciences School of Information and Engineering Wenzhou Medical University Wenzhou Zhejiang 325035 China

To the Editor： Computed tomography （CT） is a common guiding method in clinical practice for percutaneous biopsy and treatment. The key of CT guidance is how to calculate the bed coordinates corresponded to the diagram layer coordinates. The author found that the position of the puncture point is completely correct when gantry angle is 0°.

关键词： NEEDLE-BIOPSY