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基于ASNLSE方法的橡胶隔震结构损伤识别

The 2nd International Conference on Asian-European Environmental technology and Knowledge Transfer

作者： SONG Runpeng1,HE Qiong2,YUAN Huaqin3(1 school of Natural Resources and Environmental Engineering,Hefei university of technology,Hefei 230009,china 2.school of Mining and Safety Engineering,Hunan university of science and technology,Xiangtan,411201,china 3.Anhui university of Architecture,Hefei 230022,china)

In order to implement the concept of scientific development and change the mode of economic growth,the development of circular economy has been put on the agenda in Chaohu *** this thesis,the insufficiency and lagging of circular economy wais analyzed on the basis of the statement of social and economic developments of Chaohu city,according to its connotation,policies and regulations,market mechanism,technological innovation and consumer concept,etc.A series of the development countermeasures of circular economy were explored,aiming to build a sound circular society,forming the sustainable patterns of growth and consumption gradually and promoting the development of circular economy radically.

关键词： circular Economy the development countermeasures Chaohu

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振动．测试与诊断 2012年第5期32卷 730-735,859-860页

作者：尹强周丽南京理工大学机械工程学院南京210094 南京航空航天大学机械结构力学及控制国家重点实验室南京210016

对橡胶隔震结构的在线损伤识别进行了实验研究。建立橡胶隔震结构实验模型,对其进行振动台实验。采用一套刚度元件装置(SED)在线实现结构的层间刚度突变,模拟结构损伤。对结构施加不同地震波基础激励,测量结构各层的加速度响应和基础加... 详细信息

对橡胶隔震结构的在线损伤识别进行了实验研究。建立橡胶隔震结构实验模型,对其进行振动台实验。采用一套刚度元件装置(SED)在线实现结构的层间刚度突变,模拟结构损伤。对结构施加不同地震波基础激励,测量结构各层的加速度响应和基础加速度信号,提出自适应序贯非线性最小二乘(adaptive sequential nonlinear least square estimation,简称ASNLSE)方法,基于测得的加速度信号对橡胶隔震结构的参数及其变化和隔震结构各层位移进行在线识别,判断结构损伤的位置和程度。实验结果表明,ASNLSE方法能够准确识别橡胶隔震结构的参数,并追踪结构参数的变化,且识别的位移与实测位移曲线吻合良好,验证了该方法在基础隔震结构损伤识别中的有效性和准确性,具有实际应用价值。

关键词：自适应序贯非线性最小二乘橡胶隔震结构迟滞模型参数识别损伤诊断

An Application of Rough Set Theory to Modelling and Utilising Data Warehouses

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Journal of Systems science and Systems Engineering 2001年第4期13卷 489-496页

作者： DENG Ming-rong1, YANG Jian-bo2, PAN Yun-he3 1. school of Management, Zhejiang university, Hangzhou 310028, china 2. Manchester school of Management, 1nstitute of science and technology, university of Manchester, M60 1QD, UK 3. Zhejiang university, Hangzho school of Management Zhejiang University Hangzhou 310028 China Manchester school of Management Institute of Science and Technology University of Manchester M60 1QD UK Zhejiang university Hangzhou 310027 China

A data warehouse often accommodates enormous summary information in various granularities and is mainly used to support on-line analytical processing. Ideally all detailed data should be accessible by residing in some legacy systems or on-line transaction processing systems. In many cases, however, data sources in computers are also kinds of summary data due to technological problems or budget limits and also because different aggregation hierarchies may need to be used among various transaction systems. In such circumstances, it is necessary to investigate how to design dimensions, which play a major role in dimensiona1 mode1 for a data warehouse, and how to estimate summary information, which is not stored in the data warehouse. In this paper, the rough set theory is applied to support the dimension design and information estimation.

关键词： rough sets data warehouse dimension

ON THE OBSERVABILITY AND DETECTABILITY OF LINEAR STOCHASTIC SYSTEMS WITH MARKOV JUMPS AND MULTIPLICATIVE NOISE

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Journal of Systems science & Complexity 2010年第1期23卷 102-115页

作者： Yuanhua NI Weihai ZHANG Haitao FANG Key Laboratory of Systems and Control Institute of Systems Science Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing 100190 China. College of Information and Electrical Engineering Shandong University of Science and Technology Qingdao China.

This paper presents the notions of exact observability and exact detectability for Markov jump linear stochastic systems of Ito type with multiplieative noise （for short, MJLSS）. Stochastic Popov-Belevith-Hautus （PBH） Criterions for exact observability and exact detectability are respectively obtained. As an application, stochastic H2/H∞ control for such MJLSS is discussed under exact detectability.

关键词： Exact detectability exact observability Markov jump systems multiplicative noise PBH Criterion stochastic H2/H∞ control.

Bioimpatibility study of magnetosomes formed by Acidithiobacillus ferrooxidans

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Bioimpatibility study of magnetosomes formed by Acidithiobac...

A study of different fluid droplets impacting on a liquid film

第三届全国微生物资源学术暨国家微生物资源平台运行服务研讨会

作者： Lei Yan a,b,Shuang Zhang b,Peng Chen c,Xiaoxuan Yue a,Yang Li a,Zhiliang Xu a,Hongyu Li a,a MOE Key Laboratory of Arid and Grassland Ecology,school of Life sciences,lanzhou university,lanzhou,73.000,PR china b College of Life science and technology,Heilongjiang Bayi Agricultural university,Daqing,163319,PR china c GIBT,Gansu Institute of Business and technology,South of the City Beach 268,lanzhou,730010,PR china

Magnetotactic bacteria(MTB) are motile prokaryotes that have the ability to propel along geomagnetic field *** of MTB are intracellular magnetosomes,which are magnetic crystals of either iron oxide,magnetite(Fe3O4),or iron sulfide,greigite(Fe3S4) or iron pyrite(FeS2) enveloped by a phospholipid bilayer *** has been reported that Acidithiobacillus ferrooxidans(***) is able to produce *** comparison with fastidious magnetotactic bacteria,*** can grow without the drastic regimes of oxidative stress,and the mass cultivation of this bacteria has been easily *** there is extensive literature on the biocompatibility of chemosynthetic magnetite nanocrystal,much less information on the biocompatibility of biosynthetic magnetite nanocrystal is *** the present work,the orthogonal design of experiment was used to optimize the condition of *** growth and magnetosomes *** results indicated that the optimized conditions of *** growth and magnetosomes synthesizing were not *** optimized conditions for the growth of *** were found to be:FeSO4 120 mM,(NH4)2SO4 3.0 g/L,temperature 30 oC,initial pH 1.75,and 20% ***,the optimized conditions for magnetosomes synthesizing of *** were found to be:FeSO4 160 mM,(NH4)2SO4 2.4 g/L,temperature 20 oC,initial pH 1.75,and 50% *** purification of the magnetosomes can be accomplished by washing eight to ten times with HEPES buffer,along with lysozyme treatment,low-temperature ultrasonication,and magnet *** investigated the properties of magnetosomes produced by *** in detail,such as crystalline phase,vitro cytotoxicity,blood compatibility,genotoxicity and primary functional group on the magnetosomes membrane *** electron microscopy(TEM) revealed that the number of magnetosomes in single bacterial cell is about *** X-ray diffraction(XRD

关键词： Magnetotactic bacteria Acidithiobacillus ferrooxidans Magenetosomes Biocompatibility Hemolysis assay Micronucleus Test

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Petroleum science 2008年第1期5卷 62-66页

作者： Huang Qiyu Zhang Holden Petroleum Engineering Department The University of Tulsa Tulsa OK 74104 USA Beijing Key Laboratory of Urban Oil and Gas Distribution technology China University of Petroleum Beijing 102249China

Knowledge of droplet dynamics provides the basis of predicting pressure drops, holdups and corrosion inhibitor distribution in multiphase flow. Droplet size and its distribution also determine the separation efficiency between different phases. Experimental observations were conducted for droplet impingements with different fluids, droplet sizes and velocities, and film thicknesses. The observed transition boundaries were compared with the models developed by different authors. For impingement on a deep pool surface, the Marengo and Tropea correlation for splashing does not agree with the experimental results in this study. The Bai and Gosman critical Weber number for bouncing agrees with the water results but not the oil results. Three new correlations for transition boundaries between bouncing, coalescence, jetting and splashing were proposed and compared with the experimental observations.

关键词： Droplet liquid film transition boundary high-speed video

Melatonin attenuatesβ-amyloid-induced inhibition of neurofilament expression

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Acta Pharmacologica Sinica 2004年第4期25卷 49-53页

作者： Ying-chun ZHANG, Ze-fen WANG, Qun WANG, Yi-pengWANG, Jian-zhi WANG2 Department of Pathophysiology, Tongji Medical College, Huazhong university ofscience and technology, Wuhan 430030, china Department of Pathophysiology Tongji Medical College Huazhong University of Science and Technology

AIM: To explore the effect of β-amyloid (Aβ) on metabolism of cytoskeletal protein neurofilament, and search for effective cure to the lesion. METHODS: Wild type murine neuroblastoma N2a (N2awt) and N2a stably transfected with wild type amyloid precursor protein (N2aAPP) were cultured. Sandwich ELISA, immunocytochemistry, and Western blot were used respectively to measure the level of Aβ, the expression and phosphorylation of neurofilament proteins. RESULTS: The immunoreactivity of neurofilament protein was almost abolished in N2aAPP, which beard a significantly higher level of Aβ. Melatonin effectively decreased the level of Aβ, and restored partially the level of phosphorylated and non-phosphorylated neurofilament in N2aAPP. CONCLUSION: Overproduction of Aβ inhibits neurofilament expression, and melatonin attenuates the Aβ-induced lesion in cytoskeletal protein.

关键词： Alzheimer disease amyloid beta-protein neurofilament proteins melatonin

Prediction of daytime variations of HO_2 radical concentrations in the marine boundary layer using BP network

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science china Chemistry 2010年第12期53卷 2616-2621页

作者： WANG ZhuQing,CHEN YaShao,QI Bin & YANG Bing Key laboratory of Applied Surface and Colloid Chemistry,Ministry of Education school of Chemistry and Material science,Shaanxi Normal university,Xi’an 710062,china 1. Key laboratory of Applied Surface and Colloid Chemistry Ministry of Education school of Chemistry and Material science Shaanxi Normal University Xi’an 710062 China

A Back-Propagation Neural Network (BPNN) was established to predict the daytime variations of HO 2 radical concentration observed in the field campaign RISFEX 2003 (RIShiri Fall Experiment 2003) conducted in September 2003 at Rishiri Island (45.07 N,141.12 E,and 35m asl) in the Sea of *** initial weight matrices and bias vectors for the network were optimized by a bee evolutionary genetic algorithm (BEGA).It was found that the input variables sensitive to HO 2 variation were photolysis frequency of O 3 to O(1 D) (J(O 1 D)),a composite parameter defined as the ratio of HC to NO x reactivity towards OH radicals (Φ),and the total aerosol surface area (A).The predicted results are closely correlated with the experimental data with the coefficient of determination (R2) close to *** addition,the means and ranges of the predicted HO 2 concentration agree with the observed data with the correlation coefficient (R),the index of agreement (IA) and the fractional bias (FB) in the range of 0.84-0.93,0.88-0.95 and 14%-7%,*** study demonstrates that BPNN is a potential tool to predict the daytime variations of HO 2 radical concentrations in the marine boundary layer (MBL).

关键词： Back-Propagation Neural Network HO 2 radical marine boundary layer

NEW ACHIEVEMENTS ON THE THEORY AND technology OF EXPLOSIVE WELDING

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Acta Metallurgica Sinica(English Letters) 2003年第6期16卷 531-537页

作者： C.G. Shi, Y.H. Wang, L.G. Cai and C.H. ZhouEngineering Institute of Engineering Corps, PLA university of science and technology, Nanjing 210007, china Engineering Institute of Engineering Corps PLA University of Science and Technology

There are four new achievements of this work on the theory and technology of explosive welding.(1) It has been found and defined three kinds of bonding interfaces: big wavy, small wavy and micro wavy, and the micro wavy interface is the best. In a cladding plate, it is for the first time to find that the form of interface presents regular distribution.(2) Although the interface has the features of melt, diffusion and pressure welding in the mean time, the seam and 'hole' brought by the melt weaken the bonding strength of interface greatly, and the effect of melt on interface must be eliminated in explosive welding, so explosive welding is not a melt weld. The diffusion welding is a kind of form of pressure welding, and the diffusion is not the reason of the bonding of interface but the result of interface high pressure. So the diffusion welding cannot also explain the bonding mechanism of it. The experiment and theory make clear that explosive welding is a special pressure one.(3) To get good interface of no melt, explosive charge must be selected on the low limit of welding windows. In explosive welding, the drive plate should be treated as the viscous and plastoelastic body, not incompressible fluid. The bending moment under the explosive welding loading must be greater than that under dynamic limit of drive plate. According to the condition, the lower limit of explosive welding is obtained. It is about 20% less than that obtained by tradition calculation, and suitable for engineering application.(4) It is for the first time to test and study on soil anvil characteristics and change regularity under explosive welding impact loading. Through soil anvil parameter optimization analysis, it is the best for explosive welding with sandy soil of water content 17.00% and density 1.74q/cm3.

关键词： explosive welding bonding interface pressure welding low limit