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Extraction of Surface Roughness from the Central δ-peak of Light Scattering Using a Multi-wavelength Ar~+ Laser

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Chinese Journal of Lasers 2000年第3期9卷 22-27页

作者： LIU Deli QI Dongping CHENG Chuanfu (department of physics, shandong Normal university, jinan 250014, china) 山东师范大学山东济南

In this paper, a new light scattering method for measuring t he roughness of random surfaces is proposed. The method is based on the relation between the specularly reflected intensity I s, i.e., the central δ-peak intensity and wave vector component k z. The linear fit of the logarithm graph of the normalized central δ-peak intensity I sr versus k-2 z, whose variation is induced by changing illuminating wavelength, gives the square of the surface roughness w. The roughnesses of 6 silicon backside samples were measured.

关键词： random surface roughness light scattering multi-wavelength

Mechanical model of vulnerable atherosclerotic plaque rupture

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Science china(physics,Mechanics & Astronomy) 2004年第4期47卷 452-462页

作者： SU Haijun1, ZHANG Mei2 & ZHANG Yun2 1. School of Mathematics and System Science, shandong university, jinan 250100, china 2. Qilu Hospital, shandong university, jinan 250012, china School of Mathematics and System Science Shandong University Jinan China Qilu Hospital Shandong University Jinan China

Rupture of atherosclerotic plaque is the main trigger of acute cardiovascular events, but the mechanism of plaque rupture is still unknown. We have constructed a model describing the motion of the fibrous cap of the plaque using the theory of elastic mechanics and studied the stability of the plaque theoretically. It has shown that plaque rupture is the result of a dynamic interplay between factors intrinsic to the plaque itself and extrinsic factors. We have proposed a new mechanism of plaque rupture, given a new explanation about the nonlinear dynamic progress of atherosclerosis and suggested a method to identify the vulnerable plaques to manage atherosclerosis.

关键词： fibrous cap, parametric resonance, stability, mechanism, identification.

Ground state and polaron and bipolaron excited states in polydiacetylene

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Science china(physics,Mechanics & Astronomy) 2006年第4期49卷 430-439页

作者： LI Yuan1, HU Guichao1, XIA Caijuan1, LIU Desheng1,2 & XIE Shijie1,2 1. School of physics and Microelectronics, shandong university, jinan 250100, china 2. National Key Laboratory of Crystal Materials, shandong university, jinan 250100, china School of physics and Microelectronics Shandong University Jinan China National Key Laboratory of Crystal Materials Shandong University Jinan China

The electronic properties of ground state and charged excited states of nondegenerate polydiacetylene were investigated by means of a tight-binding model. The parameters of the model were obtained by comparison of the experimental and other theoretical results. It was found that there is a stable dimerized structure of polydiacetylene in ground state and the doping induces the nonlinear excitations, such as polarons and bipolarons. In order to compare the stability of polaron and bipolaron, the creation energy and binding energy were separately defined. By neglecting the electron-electron Coulomb interaction, a bipolaron is more stable than two independent polarons.

关键词： dimerization, polaron, bipolaron, binding energy.

Moment bounds for IID sequences under sublinear expectations

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Science china Mathematics 2011年第10期54卷 2155-2160页

作者： HU Feng1,2 1department of Mathematics,Qufu Normal university,Qufu 273165,china 2School of Mathematics,shandong university,jinan 250100,china department of Mathematics Qufu Normal University Qufu China School of Mathematics Shandong University Jinan China

With the notion of independent identically distributed(IID) random variables under sublinear expectations introduced by Peng,we investigate moment bounds for IID sequences under sublinear expectations. We obtain a moment inequality for a sequence of IID random variables under sublinear expectations. As an application of this inequality,we get the following result:For any continuous functionsatisfying the growth condition |(x) | C(1 + |x|p) for some C > 0,p 1 depending on ,the central limit theorem under sublinear expectations obtained by Peng still holds.

关键词： moment bound sublinear expectation IID random variables G-normal distribution central limit theorem

Routing Protocols for Transmitting Large Databases or Multi databases Systems

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Wuhan university Journal of Natural Sciences 2001年第Z1期6卷 448-450页

作者： He Hong, Ma Shao han Computer Science department of shandong university, jinan 250100, china Computer Science department of shandong university Jinan China

Most knowledgeable people agree that networking and routing technologies have been around about 25 years. Routing is simultaneously the most complicated function of a network and the most important. It is of the same kind that more than 70% of computer application fields are MIS applications. So the challenge in building and using a MIS in the network is developing the means to find, access, and communicate large databases or multi databases systems. Because general databases are not time continuous, in fact, they can not be streaming, so we can't obtain reliable and secure quality of service by deleting some unimportant datagrams in the databases transmission. In this article, we will discuss which kind of routing protocol is the best type for large databases or multi databases systems transmission in the networks.

关键词： network routing protocol databases transmission

Cloning,Sequencing and Expression Analysis of the First Cellulase Gene Encoding Cellobiohydrolase 1 from a Cold-adaptive Penicillium chrysogenum FS010

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Acta Biochimica et Biophysica Sinica 2007年第2期39卷 101-107页

作者： Yunhua HOU~(1,2) Tianhong WANG~1 Hao LONG~1 and Huiynan ZHU~(1,2) ~1State Key Laboratory of Microbial Technology,shandong university,jinan 250100,china ~2department of Food and Biologic Engineering,shandong Institute of Light Industry,jinan 250323,china State Key Laboratory of Microbial Technology Shandong University Jinan 250100 China department of Food and Biologic Engineering Shandong Institute of Light Industry Jinan 250323 China

A cellobiohydrolase 1 gene (cbhl) was cloned from Penicillium chrysogenum FS010 by amodified thermal asymmetric interlaced polymerase chain reaction (TAIL-PCR).DNA sequencing showsthat cbhl has an open reading frame of 1590 bp, encoding a putative protein of 529 amino acid *** amino acid sequence revealed that CBHI has a modular structure with a predicted molecular massof 56 kDa and consists of a fungal type carbohydrate binding module separated from a catalytic domain bya threonine rich linker *** putative gene product is homologous to fungal cellobiohydrolases inFamily 7 of the glycosyl hydrolases.A novel cbhl promoter (1.3 kb) was also cloned and sequenced,whichcontains seven putative binding sites (5'-SYGGRG-3') for the carbon catabolite repressor *** ofvarious carbon sources to the cbhl transcription of *** was examined by Northern analysis,suggesting that the expression of cbhl is regulated at transcriptional *** cbhl gene in cold-adaptivefungus *** was expressed as an active enzyme in Saccharomyces cerevisiae *** recombinantCBHI accumulated intracellularly and could not be secreted into the medium.

关键词： Penicillum chrysogenum cellobiohydrolase TAIL-PCR promoter of cbh1

Xenon Flash Lamp Pumped Miniature Nd:S-VAP Pulsed Laser

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Chinese Journal of Lasers 1995年第1期B4卷 13-17页

作者： ZHAO Shengzhi WANG Qingpu ZHANG Xingyu(Optics department,shandong university,jinan 250100,china)SUN Lianke ZHANG Shaojun (Institute of Crystal Materials,shandong university,jinan 250100,china) shandong Univ Jinan China

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ＸｅｎｏｎＦｌａｓｈＬａｍｐＰｕｍｐｅｄＭｉｎｉａｔｕｒｅＮｄ：Ｓ－ＶＡＰＰｕｌｓｅｄＬａｓｅｒＸｅｎｏｎＦｌａｓｈＬａｍｐＰｕｍｐｅｄＭｉｎｉａｔｕｒｅＮｄ：Ｓ－ＶＡＰＰｕｌｓｅｄＬａｓｅｒ￥ＺＨＡＯＳｈｅｎｇｚｈｉ；ＷＡＮＧＱｉｎｇｐｕ；ＺＨＡＮ...

关键词： minature pulsed laser Nd:S-VAP crystal

Prediction for RNA planar pseudoknots

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Progress in Natural Science:Materials International 2007年第6期17卷 717-724页

作者： Li Hengwu1,2, Zhu Daming1, Liu Zhendong1 and Li Hong2(1. School of Computer Science and Technology, shandong university, jinan 250100, china 2. department of Computer, shandong Economic university, jinan 250014, china) School of Computer Science and Technology Shandong University Jinan 250100 China department of Computer Shandong Economic University Jinan 250014 China

Based on m-stems and semi-extensible structure, a model is presented to represent RNA planar pseudoknots, and corresponding dynamic programming algorithm is designed and implemented to predict arbitrary planar pseudoknots and simple non-planar pseudoknots with O(n4) time and O(n3) space. The algorithm folds total 245 sequences in the Pseudobase database, and the test results indicate that the algorithm has good accuracy, sensitivity and specificity.

关键词： algorithm RNA secondary structure pseudoknot dynamic programming.

Indirect Spectrophotometric Determination of Sulphide with the Complex of Cd(Ⅱ)-5-Br-PADAP-CPB

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Chinese Chemical Letters 1997年第11期8卷 983-984页

作者： Zhen Yu Zhang Wei An Liang(department of Chemistry, shandong university, jinan 250100) department of Chemistry Shandong University Jinan 250100 China

By the use of CPB, Cd(Ⅲ) forms a highly sensitive complex with 5-Br-PADAP in aqueous solution, molar absorptivity εis 1. 21 ×105 1. mol-1. *** amount of sulphide can be determined from its effect on the complex of Cd (Ⅲ)-5-Br-PADAP-CPB, sulphide in the range 0~3. 2 ×10-6mol dm-3 causes a decrease in absorption, that is a linear function of the concentration, For 13ng cm-3 sulphide, common metal ions such as Na+, K+, Ca2+, Mg2+, Al3+ and anions such as CO (24μg cm-3). S2O (22μg cm-3). PO (20μg cm-3) etc. do not interfere. A method for the indirect determination of sulphide in beer and in dustrial waste water with good selectivity and accuracy is described.

关键词： CPB Br-PADAP-CPB Indirect Spectrophotometric Determination of Sulphide with the Complex of Cd