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Structural and Antileukemic Studies ofIndirubin Derivatives

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Chemical Research in Chinese Universities 1995年第1期11卷 75-78页

作者： TIAN Fa-an LI Chun-min and LI Dai-yu( Deparrment of Chmistry, Deparsment of Medicine ,Luzhou Medical College, Luzhou, 646000)GUO Yun-hong ZHOU Zong-hua and MAO Zhi-hua(Deparrment of Chemistry , Sichuan uniuersity, Chengdu, 610064 ) LUZHOU MED COLL DEPT CHEMLUZHOU 646000PEOPLES R CHINA SICHUAN UNIV DEPT CHEMCHENGDU 610064PEOPLES R CHINA LUZHOU MED COLL DEPT MEDLUZHOU 646000PEOPLES R CHINA

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关键词： Indirubin derivatives Leukemia/activity Structure

Hierarchy of Protein Loop-Lock Structures: A New Server for the Decomposition of a Protein Structure into a Set of Closed Loops

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Computational Molecular Bioscience 2013年第1期3卷 1-8页

作者： Simon Kogan Zakharia Frenkel Oleg Kupervasser Zeev Volkovich Department of software Engineering ORT Braude College Karmiel Israel Genome Diversity Center Institute of Evolution University of Haifa Haifa Israel Transist Video Limited Liability Company Skolkovo Russia

HoPLLS (Hierarchy of protein loop-lock structures) (http://***/~skogan/Apache/mydata1/***) is a web server that identifies closed loops-a structural basis for protein domain hierarchy. The server is based on the loop-and-lock theory for structural organisation of natural proteins. We describe this web server, the algorithms for the decomposition of a 3D protein into loops and the results of scientific investigations into a structural “alphabet” of loops and locks.

关键词： Structural Alphabet Loop-Lock Structure Web Server Protein Amino Acids

A diffusion method based on polar coordinate for ultrasound images denoising

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维普期刊数据库

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Journal of Harbin Institute of Technology(New Series) 2008年第4期15卷 568-572页

作者：芦蓉沈毅 dept. of Control Science and Engineering

The paper presents a novel anisotropic diffusion approach to the problem of ultrasound images denoising based on the polar-coordinate *** gradients based on the polar coordinate are introduced and they are more suitable for ultrasound images than horizontal gradients and vertical gradients commonly used in anisotropic diffusion ***,an adaptive adjustment scheme for the threshold parameter in conduction functions is presented according to the incident angle of the ultrasonic beam with respect to the organ ***,based on the structure matrix,an edge-adaptive diffusion model is introduced,which can selectively preserve the edge from the blurring or smooth *** results of real ultrasound images show the validity of the presented approach,which takes the physical imaging mechanism of ultrasonic devices into account.

关键词： image denoising anisotropic diffusion polar coordinate ultrasound image

Removal of nickel from spent electroless nickel-plating bath with nickel foam cathode

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Journal of Harbin Institute of Technology(New Series) 2002年第4期9卷 332-335页

作者：于秀娟郑彤魏杰周定 dept.of Environmental Engineering and Science

The electrochemical method was used to remove nickel ion from spent electroless nickel plating bath (pH=5 3). An electrolytic cell was composed of a porous nickel foam cathode and an inert RuO 2/Ti anode. Nickel ions were reduced and deposited on the surface of the nickel foam cathode. The effect of current density (i), linear velocity of wastewater(v), gap between cathode and anode(d C/A) and reaction time(t) on nickel removal rate and current efficiency were studied. As reaction time prolonged, nickel removal rate increased while current efficiency decreased. And larger v and smaller d C/A can enhance nickel removal rate and increase current efficiency by promoting mass transfer and dropping concentration polarization. The effect of current density on nickel removal by electrochemistry was related to other parameters. After three hours’ electrolysis with i=1 0 A/dm2, v=18 5 cm/min and d C/A=0 5 cm, nickel removal rate and current efficiency reached 85 6% and 29 1%, respectively.

关键词： spent electroless nickel plating bath electrochemical treatment nickel foam cathode

Text extraction method for historical Tibetan document images based on block projections

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Optoelectronics Letters 2017年第6期13卷 457-461页

作者：段立娟张西群马龙龙吴健 Faculty of Information Technology. Beijing University of Technology Beijing 100124 China Beijing Key Laboratory on Integration and Analysis of Large-scale Stream Data Beijing University of Technology Beijing 100124 China Beijing Key Laboratory of Trusted Computing Beijing University of Technology Beijing 100124 China Chinese Information Processing Laboratory Institute of Software Chinese Academy of Sciences Beijing 100190 China

Text extraction is an important initial step in digitizing the historical documents. In this paper, we present a text extraction method for historical Tibetan document images based on block projections. The task of text extraction is considered as text area detection and location problem. The images are divided equally into blocks and the blocks are filtered by the information of the categories of connected components and corner point density. By analyzing the filtered blocks' projections, the approximate text areas can be located, and the text regions are extracted. Experiments on the dataset of historical Tibetan documents demonstrate the effectiveness of the proposed method.

关键词： historical Tibetan document filtered blocks bounding corner approximate projection coordinate

On Memory Capacity of the Probabilistic Logic Neuron Network

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Journal of Computer Science & Technology 1993年第3期8卷 252-256页

作者：张钹张铃 dept.of Computer Science and Technology Tsinghua UniversityBeijing 100084 dept.of Mathematics Anqing Teachers' CollegeAnqingAnhui 246011

In this paper,the memory capacity of Probabilistic Logic Neuron(PLN)network is discussed. We obtain two main results:(1)the method for constructing a PLN network with a given memory capacity;(2)the relationship between the memory capacity and the size of a PLN *** show that the memory capacity of a PLN network depends on not only the number of input ports of its element but also the number of elements *** results provide a new method for designing a PLN network.

关键词： PLN network memory capacity

DIAGONAL BOUNDARY K-MATRICES FOR TWOINTEGRABLE NINETEEN-VERTEX MODELS

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Acta Mathematica Scientia 1999年第3期19卷 356-360页

作者：管习文杨善德王美山 Jilin Univ Dept Phys Changchun 130023 Peoples R China Zibo Inst Dept Phys Zibo 255092 Peoples R China

Using Sklyanin's formalism, the authors study two integrable nineteen-vertex models with open boundary conditions(BC). By solving reflection equation(RE), three different diagonal boundary K matrices for each model are obtained and the corresponding explicit forms of the Hamiltonians with three different kinds of nontrival boundary terms are given.

关键词： Sklyanin's-formalism integrable model boundary K matrix

Performance of Multicast Communication on Hypercubes

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Journal of Computer Science & Technology 1993年第4期8卷 374-378页

作者：徐海水李显济 Richard W.Nau dept.of Automation Guangdong Institute of MachineryGuangzhou 510643 dept.of Computer Engineering Guangdong Institute of TechnologyGuangzhou 510090 dept.of Math/CS Carleton CollegeNorthfieldMN 55057U.S.A.

Based upon hypercube multiprocessor systems,this paper analyses in detail the communication performance under the background of the greedy multicast algorithm *** mean delay time of a mes- sage both at a node and in the system under multicasting is *** the sake of contrast,the delay of multicast message is compared with that of multiple one-to-one messages.

关键词： Hypercubes message passing multicasting

Sertularamide from the Alga Caulerpa Sertularioides

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Chinese Chemical Letters 1997年第5期8卷 419-420页

作者： Shi Hai XU Ying Zhou CEN(Depchent of Chendstry, JinanUniversity, GUangzhou 510632)Long Mei ZENG(Department of Chdristry, Zhongshan Unjversity, Gimgzhou 510275) JINAN UNIV DEPT CHEMGUANGZHOU 510632PEOPLES R CHINA ZHONGSHAN UNIV DEPT CHEMGUANGZHOU 510275PEOPLES R CHINA

f A new ceramjde sertulhade was isolated ftom the alga Caulerpa sertularioidescollected from the South China Sea and itS strUctUre was established by SPeCtroscopic methods.

关键词： ppm Sertularamide from the Alga Caulerpa Sertularioides