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Expression pattern and core region analysis of AtMPK3 promoter in response to environmental stresses

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Science china(Life Sciences) 2010年第11期53卷 1315-1321页

作者： GAO Fei1,2, SU Qi1, FAN YunLiu1& WANG Lei1 1Biotechnology Research Institute/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Science, beijing 100081, china 2college of Life and Environmental Sciences, Minzu University of china, beijing 100081, china 1. Biotechnology Research Institute/National Key Facility for Crop Gene Resources and Genetic Improvement Chinese Academy of Agricultural Science Beijing 100081 China2. College of Life and Environmental Sciences Minzu University of China Beijing 100081 China

The protein kinase AtMPK3,a component of the MAP kinase cascade,plays an important role in stress signal transduction in plant cells. To clarify how AtMPK3 is regulated at the transcriptional level in response to various environmental factors, the 1016-bp promoter sequence upstream of the transcription start site of the AtMPK3 gene was isolated. Analyses of the promoter sequence using plant promoter databases revealed that the AtMPK3 promoter contains many potential cis-acting elements involved in environmental stress responses. We constructed four deletion mutants of the AtMPK3 promoter, and introduced the intact and truncated promoter sequences fused to the β-glucuronidase (GUS) gene into Arabidopsis. GUS histochemical staining and quantitative fluorometric GUS assays were performed to visualize and compare the expression patterns in response to different environmental stimuli. The region between-188 and-62 upstream of the transcription start site was identified as the essential DNA sequence of the AtMPK3 promoter for responses to drought, high salinity, low temperature, and wounding. These results advance our understanding of the molecular mechanisms controlling AtMPK3 expression in response to different environmental stimuli.

关键词： Arabidopsis thaliana AtMPK3 promoter stress

ANALYSIS AND MEASUREMENT ONRESIDUAL STRESS OF ARAMIDALUMINIUMLAMINATE

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Chinese Journal of Aeronautics 1994年第4期7卷 283-288页

作者： Li Hongyun Hu Hongiun Zheng Rulqi(beijing institute of Aeronautical Materials, beijing, china, 100095)

Residual stresses of the ordinarily cured and pre-stressed unidirectionallaminate are analyzed quantitatively. In order to examine the analyzing formulations,strain gages were embedded in the uni-directional aramid aluminium laminates (ordi-narily cured and pre-stressed) to determine the residual stresses in the aluminiumlayers. The calculated residual stresses are in good agreement with the experimental val-ues in the longitudinal direction. Therefore, the work in this paper can be used to calcu-late, determine and design the longitudinal residual stresses according to the manufac-ture and application demands.

关键词： aramid fiber aluminium alloys laminates residual stress prestressing

Heating effect and biocompatibility of bacterial magnetosomes as potential materials used in magnetic fluid hyperthermia

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Progress in Natural Science:Materials International 2012年第1期22卷 31-39页

作者： Rui-ting Liu a,Jie Liu a,c,Jie-qiong Tong a,c,Tao Tang a,b,Wei-Chao Kong a,c,Xiao-wen Wang a,Ying Li b,Jin-tian Tang a a Key Laboratory of Particle & Radiation Imaging(Tsinghua University),Ministry of Education,Department of Engineering Physics,Tsinghua University,beijing 100084,china b State Key Laboratories for Agrobiotechnology and college of Biological Sciences,china Agricultural University,beijing 100083,china c Department of Pharmaceutics,beijing University of Chinese Medicine,beijing 100102,china [a] Key Laboratory of Particle & Radiation Imaging (Tsinghua University) Ministry of Education Department of Engineering Physics Tsinghua University Beijing 100084 China [b] State Key Laboratories for Agrobiotechnology and college of Biological Sciences China Agricultural University Beijing 100083 China [c] Department of Pharmaceutics Beijing University of Chinese Medicine Beijing 100102 China

Magnetic fluid hyperthermia(MFH) promises to be a viable alternative in the treatment of localized cancerous *** treatment consists of introducing nanoparticles as energy absorbent agents in tumor tissue under an oscillating magnetic field,where nanoparticles dissipate energy in the form of heat,causing a localized rise in the temperature and tumor cell *** magnetic fluid under study is artificial magnetic *** work seeks to introduce the new natural biologic magnetic material bacterial magnetosomes(BMs) to be used in *** of magnetosomes and chemically synthesized magnetic nanoparticles(MNPs),such as morphology,magnetic properties and their heating effects under magnetic field were *** studies using human breast cancer cells MCF-7 indicated that cell viability could be significantly decreased by the heat derived from BMs and MNPs under alternative magnetic *** of BMs and MNPs was compared in terms of evaluating their acute toxicity in mice and their decomposition abilities in vitro,and it showed that magnetosomes exhibit a lower *** findings provide evidence for beneficial activities of magnetosomes in MFH and support the continued investigation of it to be applied in biomedicine.

关键词： Magnetosome Synthesized magnetic nanoparticles Magnetic fluid hyperthermia Properties Biocompatibility

Elastic-plastic contact force history and response characteristics of circular plate subjected to impact by a projectile

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Acta Mechanica Sinica 2007年第4期23卷 415-425页

作者： L.B.Chen F.Xi J.L.Yang Solid Mechanics Research Center,Beihang University,beijing 100083.china Shandong Institute of Architecture and Engineering,Jinan 250014,china Solid Mechanics Research Center Beihang University Beijing 100083 China Shandong Institute of Architecture and Engineering Jinan 250014 China

A new elastic-plastic impact-contact model is proposed in this paper. By adopting the principle of minimum acceleration for elastic-plastic continue at finite deformation, and with the aid of finite difference method, the proposed model is applied in the problem of dynamic response of a clamped thin circular plate subjected to a projectile impact centrally. The impact force history and response characteristics of the target plate is studied in detail. The theoretical predictions of the impact force and plate deflection are in good agreements with those of LDA experimental data. Linear expressions of the maximum impact force/transverse deflection versus impact velocity are given on the basis of the theoretical results.

关键词： Elastic-plastic contact model ImpactCircular plate contact force Minimum principleof acceleration

Lepton flavor violating Z-boson decays at GigaZ as a probe of supersymmetry

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Science china(Physics,Mechanics & Astronomy) 2010年第11期53卷 1949-1952页

作者： YANG JinMin 1,2 1 Department of Physics,Henan Normal University,Xinxiang 453007,china 2 Institute of Theoretical Physics,Chinese Academy of Sciences,beijing 100190,china 1. Department of Physics Henan Normal University Xinxiang 453007 China2. Institute of Theoretical Physics Chinese Academy of Sciences Beijing 100190 China

This paper briefly reviews the lepton flavor violating Z-decays at GigaZ as a probe of supersymmetry by focusing on Z → i j in two representative supersymmetric models: the minimal supersymmetric model without R-parity and the supersymmetric seesaw *** work concludes that under the current experimental constraints from LEP and i → j γ,these rare decays can still be enhanced to reach the sensitivity of the ***,supersymmetry can be probed via these decays at GigaZ.

关键词： Z-decay GigaZ supersymmetry

NUMERICAL STUDY ON SALINITY STRATIFICATION IN THE OUJIANG RIVER ESTUARY

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Journal of Hydrodynamics 2009年第6期21卷 835-842页

作者： JIANG Heng-zhi SHEN Yong-ming WANG Shou-dong State Key Laboratory of coastal and Offshore Engineering Dalian University of Technology Dalian 116024 China Transport Planning and Research Institute Beijing 100048 China

The variations of current, salt intrusion and vertical stratification under different conditions of river flow and wind in the Oujiang River Estuary （ORE） were investigated in this article using the Environmental Fluid Dynamics code （EFDC）. The model was verified against water level variation, velocity, and salinity variations in June 2005. The simulation results agreed well with measured data. Six sensitivity tests were conducted for different conditions of river flow and wind specified in the model. Model results show that salinity intrudes further upstream under scenarios with low flow and downriver local wind conditions. In contrast, the responses of salinity stratification to different environmental forcing functions were different in different portions of the estuary. Salinity stratification was enhanced under high flow condition. Model results also show that wind is not crucial to the salt intrusion and salinity stratification in the ORE.

关键词： salinity stratification wind river discharge Oujiang River Estuary(ORE)

TEXTURAL　TRANSFORMATION　OF　KAOLINITEBAUXITIC　MINERALS　UNDER　A　HIGH　RESOLUTION　TRANSMISSION　ELECTRON　MICROScoPE（HRTEM）

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Scientia Geologica Sinica 1996年第1期 55-60页

作者： Dameng Liu (coal Geology Research Division,china University of Geosciences, beijing 100083)Kuili Jin and Yunquan Wang (beijing Graduate School, china University of Mining and technology, beijing 100083)

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ＴＥＸＴＵＲＡＬＴＲＡＮＳＦＯＲＭＡＴＩＯＮＯＦＫＡＯＬＩＮＩＴＥＢＡＵＸＩＴＩＣＭＩＮＥＲＡＬＳＵＮＤＥＲＡＨＩＧＨＲＥＳＯＬＵＴＩＯＮＴＲＡＮＳＭＩＳＳＩＯＮＥＬＥＣＴＲＯＮＭＩＣＲＯＳＣＯＰＥ（ＨＲＴＥＭ）ＺｈｕＲｕｋａｉ（Ｂｅｉｊｉｎｇｒｅｓ...

关键词： HRTEM MICROScoPE HIGH ELECTRON

Investigation of heavy metal partitioning influenced by flue gas moisture and chlorine content during waste incineration

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Journal of Environmental Sciences 2010年第5期22卷 760-768页

作者： Qinghai Li,Aihong Meng,Jinyan Jia,Yanguo Zhang Department of Thermal Engineering,Key Laboratory for Thermal Science and Power Engineering of the Ministry of Education of china,Tsinghua University,beijing 100084,china. [a] Department of Thermal Engineering Key Laboratory for Thermal Science Power Engineering of the Ministry of Education of china Tsinghua University Beijing 100084 China

The impact of moisture on the partitioning of the heavy metals including Pb,Zn,Cu and Cd in municipal solid waste （MSW） was studied in a laboratory tubular furnace.A thermodynamic investigation using CHEMKIN software was performed to compare the experimental *** waste,representative of typical MSW with and without chlorine compounds,was burned at the background temperature of 700 and 950°C,*** the absence of chlorine,the moisture content has no evident effect on the volatility of Pb,Zn and Cu at either 700 or 950°C,however,as flue gas moisture increasing the Cd distribution in the bottom ash increased at 700°C and reduced at 950°C,*** the presence of chlorine,the flue gas moisture reduced the volatility of Pb,Zn and Cu due to the transformation of the more volatile metal chlorides into less volatile metal oxides,and the reduction became significant as chlorine content *** Cd,the chlorine promotes its volatility through the formation of more volatile CdCl *** a result,the increased moisture content increases the Pb,Zn,Cu and Cd concentrations in the bottom ash,which limits the utilization of the bottom ash as a construction ***,in order to accumulate heavy metals into the fly ash,MSW should be dried before incineration.

关键词： heavy metals partitioning moisture chlorine municipal solid waste incineration

DESIGN coNSIDERATION OF ERBIUM DOPED FIBER FOR EFFICIENT L-BAND EDFAs

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光子学报 2000年第12期29卷 1138-1140页

作者： Luo Jie,Ye Peida School of Telecommunication Engineering,beijing University of Posts and Telecommunications, beijing 100876,P.R.china Wu Shujian,Chen Shuling Wuhan Research Institute of Posts and Telecommunications,Wuhan 430074,P.R.china School of Telecommunication Engineering Beijing University of Posts and Telecommunications Beijing 100876 China Wuhan Research Institute of Posts and Telecommunications Wuhan 430074 China

In this paper,the relation between gain coefficient of long wavelength band(L band)EDFA and the Er 3+ ion concentration of erbium doped fiber (EDF) is *** high concentration EDF co doped with aluminium has been developed to shorten the fiber length necessary for L band amplification.L band amplification has been realized with a dual stage pumping *** the total EDF length of 18m,the small signal gain is 42.26dB and the output power is 17.5dBm at *** low concentration quenching effect is believed to be due to the high aluminium concentration in author ***-3dBm total input signal power,the gain tilt of 7 WDM channels from 1570 to 1600nm is only 0.68dB.

关键词： Erbium doped fiber L band EDFA concentration quenching Gain flatness