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Chinese Chemical Letters 1998年第3期9卷 265-268页

作者： Ai You HAO Lin Hui TONG Tian lin YANG and Ji Mao LIN(College of Chemistry Shandong university, Jinan250100)(Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou73.000)(Department of Chemistry ningxia university, yinchuan 750021) Coll. of Chem. Shandong university Jinan 250100 China

The aryl moiety which was bonded as a functional group on the primary alcohol side ofβ-CD or the secondary alcohol side of β-CD or the secondary alcohol side of β-CD with anethylenediamino chain could show remarkable different molecular recognition abilities in thecomplexation with small molecular guests such as alkanes, cycloketones etc.

关键词： aryl moiety β-Cyclodextrin host-guest complexation molecular recognition ability

Physicochemical and microbiological effects of biosurfactant on the remediation of HOC-contaminated soil

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Progress in Natural Science:Materials International 2005年第7期15卷 577-585页

作者： ZENG Guangming , ZHONG Hua, HUANG Guohe and FU Haiyan ( Department of Environmental Science and engineering, Hunan university, Changsha 410082, china {3. of engineering, university of Regina, Regina, Saskatoon S4S0A2, Canada) Department of Environmental Science and engineering Hunan University Changsha 410082 China. faculty of engineering University of Regina Regina Saskatoon S4S0A2 Canada

Remediation of soil contaminated by hydrophobia organic compounds using biosurfactants as additives involves interactions between soil matrix, hydrophobic organic compound contaminants, biosurfactants and microorganisms. In this paper, the mechanism for biosurfactants to enhance the contaminant degradation is basically revealed. Biosurfactants can enhance solubilization of the contaminants in the soil matrix, change their mass transfer properties into the aqueous phase, as well as affect their sorption properties. Furthermore, biosurfactants can act on microorganisms and change their surface properties, accordingly cause new growth and uptake behavior of the bacteria in the soil matrix. Both the physicochemical and the microbiological effects can basically increase the bioavailability of the contaminants and enhance their degradation.

关键词： bioavailability physicochemical effects microbiological effect hydropbobic organic compounds biosurfactants.

An aperiodic phenomenon of the unscented Kalman filter in filtering noisy chaotic signals

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Progress in Natural Science:Materials International 2007年第10期17卷 1235-1240页

作者： Fan Hongjuan1, Feng Jiuchao1,2, Xie Shengli2 and Wang Shiyuan1(1. faculty of Electronic and Information engineering ,Southwest university, Chongqing 400715,{3. 2. School of Electronic and Information engineering, South{3. university of Technology, Guangzhou 510641,{3.) faculty of Electronic and Information engineering Southwest University Chongqing 400715 China School of Electronic and Information engineering South China University of Technology Guangzhou 510641 China

A non-periodic oscillatory behavior of the unscented Kalman filter (UKF) when used to filter noisy contaminated chaotic signals is reported. We show both theoretically and experimentally that the gain of the UKF may not converge or diverge but oscillate aperiodically. More precisely, when a nonlinear system is periodic, the Kalman gain and error covariance of the UKF converge to zero. However, when the system being considered is chaotic, the Kalman gain either converges to a fixed point with a magnitude larger than zero or oscillates aperiodically.

关键词： chaos unscented Kalman filter Lyapunov exponents aperiodicity.

An effective and practical method for solving an unnegligible problem inherent in the current calculation model for multi-support seismic analysis of structures

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Science china(Technological Sciences) 2010年第7期53卷 1774-1784页

作者： LIU GuoHuan2, GUO Wei1 & LI HongNan2 1 National engineering Laboratory for High Speed Railway Construction, School of Civil engineering and Architecture, Central South university, Changsha 410075,{3. 2 faculty of Infrastructure engineering, Dalian university of Technology, Dalian 116024,{3. National engineering Laboratory for High Speed Railway Construction School of Civil Engineering and Architecture Central South University faculty of Infrastructure engineering Dalian University of Technology

In the seismic analysis of extended structures subject to spatially varying motions, the displacement input model instead of acceleration model is usually adopted for accurate results. In this paper, a more detailed and comprehensive analysis of the displacement input model is carried out and the research shows that there exists an unnegligible problem in the current displacement model, which leads to the irrationality and unconvergence of some calculated results such as base shear etc. Based on the situation, an effective method named massless rigid element (MRE) method is presented to solve the problem. Moreover, the rationality and accuracy of the method are further assessed and the method is applied to a transmission tower-line system project using the commercially available structural analysis software SAP2000. The theoretical and numerical analyses indicate that the MRE approach is not only feasible with sufficient computational accuracy but also practical and can be easily implemented using the commercially available finite element software such as SAP2000.

关键词： extended structures seismic responses spatially varying motions displacement input model massless rigid element (MRE) transmission tower-line system

DETECTION OF TRANSIENT SIGNAL USING THE DISCRETE WAVELET TRANSFORM

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国防科技大学学报 1995年第3期17卷 114-118,125页

作者： Liu Zheng(Department of Information Electronics,faculty of engineering,Nagoya university, Nagoya, 464,Japan)

ＤＥＴＥＣＴＩＯＮＯＦＴＲＡＮＳＩＥＮＴＳＩＧＮＡＬＵＳＩＮＧＴＨＥＤＩＳＣＲＥＴＥＷＡＶＥＬＥＴＴＲＡＮＳＦＯＲＭＬｉｕＺｈｅｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＩｎｆｏｒｍａｔｉｏｎＥｌｅｃｔｒｏｎｉｃｓ，Ｆａｃｕｌｔ... 详细信息

ＤＥＴＥＣＴＩＯＮＯＦＴＲＡＮＳＩＥＮＴＳＩＧＮＡＬＵＳＩＮＧＴＨＥＤＩＳＣＲＥＴＥＷＡＶＥＬＥＴＴＲＡＮＳＦＯＲＭＬｉｕＺｈｅｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＩｎｆｏｒｍａｔｉｏｎＥｌｅｃｔｒｏｎｉｃｓ，ＦａｃｕｌｔｙｏｆＥｎｇｉｎｅｅｒｉｎｇ，Ｎａ...

关键词：信号检测瞬态信号 DWT

Recent research and applications of GPS based technology for bridge health monitoring

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Science china(Technological Sciences) 2010年第10期53卷 2597-2610页

作者： YI TingHua1,2, LI HongNan1 & GU Ming2 1 faculty of Infrastructure engineering, Dalian university of Technology, Dalian 116023.{3. 2 State Key Laboratory for Disaster Reduction in Civil engineering, Tongji university, Shanghai 200092,{3. faculty of Infrastructure engineering Dalian University of Technology State Key Laboratory for Disaster Reduction in Civil engineering Tongji University

Today,long-span bridges are being designed to be more flexible and to resist extensive impacts from changes in temperature,severe wind gusts and earthquake tremors. Structural responses (especially displacement) of bridge structures are becoming increasingly important for the finite element (FE) modal updating,structural response prediction and safety evaluation. Methods of global displacement sensing were developed for these needs. This paper presents an overview of current research and development activities in the field of bridge health monitoring using the global positioning system (GPS). The GPS monitoring technology and its accuracy assessment method are also briefly described. Finally,existing problems and promising research efforts in the GPS based bridge health monitoring are discussed.

关键词： global positioning system (GPS) structural health monitoring (SHM) bridge measurement

Entropy-Based Approach to Remove Redundant Monitoring Wells from Regional-Scale Groundwater Network

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Journal of china university of Geosciences 2002年第3期13卷 266-273页

作者： Chen Zhihua engineering faculty, china {3. of Geosciences, Wuhan 43.074 Jing Juanli Graduate School, china {3. of Geosciences, Wuhan 43.074 Chen Gang engineering faculty, china {3. of Geosciences, Wuhan 43.074 engineering faculty China University of Geosciences Wuhan 430074 Graduate School China University of Geosciences Wuhan 430074

An entropy-based approach is applied to identify redundant wells in thenetwork. In the process of this research, groundwater-monitoring network is considered as acommunication system with a capability to transfer information, and monitoring wells are taken asinformation receivers. The concepts of entropy and mutual information are then applied to measurethe information content of individual monitoring well and information relationship betweenmonitoring well pairs. The efficiency of information transfer among monitoring wells is the basis tojudge the redundancy in the network. And the capacity of the monitoring wells to provideinformation on groundwater is the point of evaluation to identify redundant monitoring wells. Thisapproach is demonstrated using the data from a regional-scale ground-water network in Hebei plain,china The result shows that the entropy-based method is recommendable in optimizing groundwaternetworks, especially for those within media of higher heterogeneities and ani-sotropies.

关键词： entropy groundwater monitoring network optimize redundant

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试论回族的婚姻伦理观及其近代变革

回族研究 2012年第1期 125-128页

作者：张腾宁夏大学研究生院宁夏银川750021

以《古兰经》和"圣训"为基本精神的伊斯兰教的婚姻伦理观,是指导穆斯林婚姻的行为准则和规范,在伊斯兰教的日常生活和实践中占有重要地位。回族的婚姻伦理观受伊斯兰教的直接影响和中国儒教的间接融合,呈现丰富多彩的内容和价值。尤其... 详细信息

以《古兰经》和"圣训"为基本精神的伊斯兰教的婚姻伦理观,是指导穆斯林婚姻的行为准则和规范,在伊斯兰教的日常生活和实践中占有重要地位。回族的婚姻伦理观受伊斯兰教的直接影响和中国儒教的间接融合,呈现丰富多彩的内容和价值。尤其是近代以来,随着社会的变革,回族的婚姻伦理观也在发生着变迁,逐渐趋于成熟和理性。

关键词：回族婚姻伦理观近代变革

Conformal isoparametric hypersurfaces with two distinct conformal principal curvatures in conformal space

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Science china Mathematics 2010年第4期53卷 953-965页

作者： NIE ChangXiong 1,2,LI TongZhu 3.HE YiJun 4 & WU ChuanXi 5 1 faculty of Mathematics and Computer Sciences,Hubei university,Wuhan 43.062,china 2 School of Mathematical Sciences,Peking university,Beijing 100871,china 3.faculty of Sciences,Beijing Institute of Technology,Beijing 100081,china 4 School of Mathematical Sciences,Shanxi university,Taiyuan 03.006,china 5 Institute of Mathematics,Hubei university,Wuhan 43.062,china faculty of Mathematics and Computer Sciences Hubei University School of Mathematical Sciences Peking University faculty of Sciences Beijing Institute of Technology School of Mathematical Sciences Shanxi University

The conformal geometry of regular hypersurfaces in the conformal space is *** classify all the conformal isoparametric hypersurfaces with two distinct conformal principal curvatures in the conformal space up to confor... 详细信息

关键词： Lorentz conformal geometry conformal invariants conformal isoparametric hypersurfaces