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Performance of Recycled Aggregate Concrete-Filled Steel Tubular Members under Various Loadings

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Performance of Recycled Aggregate Concrete-Filled Steel Tubu...

2nd International Conference on Waste Engineering and Management

作者： Youfu YANG(1) (1) state key laboratory of Coastal and Offshore Engineering Dalian University of Technology P.R.china

＜正＞The technology of re-using waste concrete resources and replacing natural aggregates with recycled aggregate concrete（RAC）,can effectively make use of the waste concrete resources as new building aggregates,save the natural coarse and fine aggregates,and protect the ***-filled steel tube（RACFST） can protect RAC with the confinement of the outer steel tube,and the interaction between the steel tube and core RAC *** is propitious for improving the mechanical performance of *** this paper,the results of experimental and theoretical studies of circular and square RAC-filled steel tubular（RACFST） members under various loadings are presented,and the members are subjected to short-term loadings,long-term sustained loads and cyclic flexural *** numerical methods, including fibre model method（FMM） and finite element method（FEM）,are established to investigate the performance of RACFST members under various *** results in this paper may be taken as reference in related research.

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Research progresses of lead-free BaTiO3-Based piezoelectric ceramics

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Research progresses of lead-free BaTiO3-Based piezoelectric ...

2011年全国压电和声波理论及器件应用研讨会

作者： Jia-liang ZHANG~* School of Physics,state key laboratory of Crystal Materials,Shandong University,Jinan,P.R.china

Barium titanate(BaTiO) is historically the first ceramic piezoelectric material and shows the high possibility to be revitalized as a popular lead-free piezoelectric *** decades,BaTiO ceramics had been known to exhibi... 详细信息

关键词： BaTiO3 ceramics Piezoelectric properties Grain-size effect Temperature stability

Dexmedetomidine reverses peripheral inflammation-induced acitivation of astrocytes in the spinal cord

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Dexmedetomidine reverses peripheral inflammation-induced aci...

中国神经科学学会第四次会员代表大会暨第八届全国学术会议

作者： Bo XU~(1,2),Hua XU~2,Wei-Shi ZHANG~2,Xiao-Ming DENG~2,Yu-Qiu ZHANG~(1,*) 1 Institute of Neurobiology,Institutes of Brain science and state key laboratory of Medical Neurobiology,Fudan University,Shanghai 200032,{4. 2 Department of Anesthesiology,Changhai Hospital,The Second Military Medical University,Shanghai 2004.3,{4.

＜正＞Objective Spinal glia is of the utmost importance in developing and maintaining allodynia and hyperalgesia following tissues inflammation or *** systemically and intrathecally administered dexmedetomidine exhibited significant analgesic effect in human with inflammatory disease and animals with ***,whether the spinal glial functional states are involved in the analgesic effect of dexmedetomidine is still *** present study investigated the effects of systemic repeated administration of dexmedetomidine on thermal hyperalgesia and spinal glial activation evoked by monoarthritis（MA）.Methods Monoarthritis was induced by an intra-articular injection of Complete Freund’s Adjuvant（CFA）.Paw withdrawal latency（PWL） by radiant heat was *** analyzed cell markers GFAP for astrocytes and Iba-1 for microglia in the spinal ***（1） Extensive activation of astrocytes and microglia were found in the spinal dorsal horn of MA rats.（2） Repeated intraperitoneal（i.p.） administration of dexmedetomidine（10μg/kg） significantly attenuated MA-induced thermal hyperalgesia and suppressed spinal astrocytic but not microglial activation.（3） Double immunofluorescence showed that a2ARs immunoreactivities were widely colocalized with GFAP,an astrocytic marker,but not with Iba-1,a microglial marker,in the spinal *** Blockade of spinal astrocytic activation was involved in anti-nociceptive mechanisms of dexmedetomidine.

关键词： dexmedetomidine astrocyte microglia monoarthritis thermal hyperalgesia rat

Extraction of Cadmium from Sewage Sludge Using Polyepoxysuccinic Acid

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Pedosphere 2009年第2期19卷 137-142页

作者： ZHU Zhi-Liang ZHANG Li-Hua ZHANG Hua QIU Yan-Ling ZHANG Rong-Hua ZHAO Jian-Fu state key laboratory of Pollution Control and Resource Reuse Tongji University Shanghai 200092 China Chemistry and Biology Engineering Department Sanming College Sanming 365004 China

Polyepoxysuccinic acid （PESA）, as an environmental benign biodegradable chelant, was used to remove heavy metals from the sewage sludge of Shanghai Taopu Wastewater Treatment Plant. The extraction of cadmium （Cd） from sewage sludge using aqueous solution of PESA was studied. It was found that PESA was capable of extracting Cd from the sludge, and the extraction efficiency was dependent on both pH and the concentration of the chelating reagent. The extraction efficiency decreased gradually with increasing of pH, whereas the dependency on pH decreased as the concentration of PESA increased. In the case of the high PESA to total metal ratio, e.g., 10：1, the extraction efficiency reached above 70% within the pH range from 1 to 7. The highest extraction efficiency obtained in tbe experiment was 78%. By comparing the contents of the heavy metals in sewage sludge before and after the extraction, it was found that the extracted Cd came mainly from the four fractions： acid-soluble, reducible, oxidizable, and water-soluble fractions.

关键词： cadmium extraction PESA sewage sludge

Asynchronous Switching Network Protocol Design for Networked Linear Switched Systems

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Asynchronous Switching Network Protocol Design for Networked...

第三十届中国控制会议

作者： MA Dan state key laboratory of Integrated Automation for Process Industries(Northeastern University),Shenyang 110004.P.R.china

＜正＞In this paper,we investigate the network protocol design for a class of networked switched linear control *** periodic switching signal can be viewed of a network protocol to guarantee the perfect transmission for networked switched control *** and network-induced delay cause the asynchronous motions between switched subsystems and the corresponding switching *** rewrite the original networked switched linear systems by sampled asynchronous switched linear systems with time-varying *** the descriptor system representation method,we give a new asynchronous switching network protocol to guarantee the system is exponentially stable,which depends on the periodic switching interval,the rate of network-induced asynchronous switching,and the upper bound of time-varying delay.

关键词： Asynchronous Switching Network Protocol Network-Induced Delay Switched Linear Systems

Ribozyme probe based on molecular beacon for real time monitoring of enzymatic cleavage process

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chinese science Bulletin 2003年第23期48卷 2581-2584页

作者： MENG Xiangxian, WANG Kemin, TAN Weihong, LI Jun, TANG Zhiwen, GUO Qiuping, HUANG Shasheng & LI Du state key laboratory of Chemo/Biosensing and Chemometrics, Institute of Biological Technology, College of Chemistry and Chemical Engi-neering, Hunan University, Changsha 4.0082,{4. Correspondence should be addressed to Wang Kemin (e-mail: kmwang @***) state key laboratory of Chemo/Biosensing and Chemometrics Institute of Biological Technology College of Chemistry and Chemical Engineering Human University

Ribozyme probe based on molecular beacon (MBR) for monitoring enzymatic cleavage process in real time is designed and studied. The approach relies on ri-bozyme substrates modified at the two arms, with a fluores-cent moiety attached to the end of one arm and a non-fluorescent quenching moiety attached to the end of the other arm. MBR is employed to directly convert the cleavage information into fluorescence signal in real time. Compared with traditional approach, this method provides a no-radiolabeling, sensitive and effective way to research on the ribozyme activity, enzymatic dynamic process and ri-bozyme function during gene therapy. The activity of the ribozyme against hepatitis C virus RNA (HCV-RNA) is stud-ied based on this assay.

关键词：酶探测器分裂过程动力学酶活性基因治疗肝炎

Singularity of Software Reliability Models LVLM and LVQM

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Wuhan University Journal of Natural sciences 2000年第2期5卷 150-154页

作者： XU Ren zuo ZHOU Rui YANG Xiao qing Wuhan University The State Key Laboratory of Software Engineering Wuhan China (GRID:grid.49470.3e) (ISNI:***)

According to the principle, “The failure data is the basis of software reliabilityanalysis”, we built a software reliability expert system (SRES) by adopting the artificialtechnology. By reasoning out the conclusion from the fitting results of failure data of asoftware project, the SRES can recommend users “the most suitable model” as a softwarereliability measurement model. We believe that the SRES can overcome the inconsistency inapplications of software reliability models well. We report investigation results of singularity and parameter estimation methods of models, LVLM and LVQM.

关键词： software reliability measurement models software reliability expert system singularity parameter estimation method LVLM LVQM

Role of Italian Ryegrass in feeding rabbit and meat goose

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Role of Italian Ryegrass in feeding rabbit and meat goose

ⅩⅪ International Grassland Congress and the Ⅷ International Rangeland Congress

作者： Wang Yu-tao Xin Guo-rong~* Xia Fang-fang Hu Zhi-jian state key laboratory of Biocontrol School of Life science Sun Yat-sen University Guangzhou 510275 {4.

＜正＞Introduction Italian ryegrass-Rice Rotation（IRR） system has been accepted as an excellent example of ecological agriculture system for its benefits in both economy and ecology（Yang *** al.1997）.In the presen... 详细信息

关键词： IRR system Italian ryegrass rabbit meat goose rice-forage-animal multi-farming system

Preliminary Study of the Mechanism of Butadiene Peroxide Explosion

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Preliminary Study of the Mechanism of Butadiene Peroxide Exp...

2002年安全与科学技术国际会议

作者： LIU Qiang & QIAN Xinming (state key Lab of Explosion and Safety science Beijing Institute of Technology Beijing 100081 china)

＜正＞ There were a lot of explosion accidents related to butadiene peroxide in petro-chemical industry. Since the explosion mechanism of butadiene peroxide is so complicated, and the peroxide is so unstable and dangerous a material, the experimental design to test its explosion characteristics is hard to deal with under current laboratory conditions. The present paper discusses the mechanism of butadiene peroxide explosion and draw a conclusion that the self-polymerizing reaction of butadiene produces a lot of heat, and the heat accumulation is the reason for the explosion.

关键词： butadiene peroxide polymer, explosion