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Cloning and expression pattern of a dehydrin-like BDNI gene from drought-tolerant Boea crassifolia Hemsl.

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chinese Science Bulletin 2000年第22期45卷 2072-2077页

作者： ZHAO Huiwu, LIU Han, YU Haiyuan, HU Yuanlei, GAO Yin, LI Zhenyu & LIN ZhongpingNational Laboratory of Protein Engineering and Plant Genetic Engineering , Peking university, beijing 100871,{2. Botanical Institute, {3. academy of Sciences, beijing 100093.{2. Correspondence should be addressed to Lin Zhongping

A 500-bp cDNA fragment was amplified via RT-PCR from drought-induced total RNA of the drought-tolerant B. crassifolia Hemsl. using primers based on the sequence of published dehydrin conserved region. By using 5’ RACE, full-length coding region (1 148 bp) of BDN1 gene was produced. It is a new member of the dehydrin gene family. Southern analysis indicated that BDN1 is present in the 6. crassifolia genome as a single-copy gene. Northern analysis revealed that its expression is inducible by drought and cold stresses as well as ABA application.

关键词： drought-tolerant plant Boea crassifolia Hemsl. dehydrin 5’ RACE BDN1 gene.

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公安院校警务实训教学研究与实践

实验技术与管理 2010年第3期 219-221页

作者：尹军祖高航乐新宇中国人民公安大学安全防范工程系中国人民公安大学教务处北京市交通学校

通过警务实战训练馆对学生进行警务实战训练是加强学生实践教学的重要教学方式。总结了警务实训教学中的经验,提出了提高学生实训教学质量、改善实训教学方法的思路与做法。

关键词：警务实训实训模式实践教学体系

Application of Signal Processing and Neural Network for Transient Waveform Recognition in Power System

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Application of Signal Processing and Neural Network for Tran...

2.10 chinese Control and Decision Conference

作者： Shanlin Kang~1,Huanzhen Zhang~1,Yuzhe Kang~2.1.Hebei university of Engineering,Handan 05603.,china 2.{2. university of Chemical Technology,{2. 10002.,china

＜正＞The electric utilities and end users of power system network have become more concerned about power quality issues due to technical and financial consequences that have resulted from electric power quality *** power quality monitoring technology has an effective on analyzing power quality related *** paper presents a novel study combining wavelet transform with pattern recognition technique to investigate voltage stability using for power quality *** wavelet transformation possesses capabilities of time and frequency domain localizations,achieving a great impetus in signal singularity *** statistics-based denoising method is designed to filter the random noise and impulse noise in power quality disturbance signals,incorporating the advantages of wavelet transform to extract signal feature meanwhile restraining various *** wavelet decomposition coefficients as feature vector of neural network are presented for extracting disturbance *** neural network provides a means of determining a degree of belief for each identified disturbance *** performance of the proposed approach is studied and a proper combination of wavelet transformation and neural network is identified.

关键词： Power system power quality monitoring wavelet transform signal denoising voltage stability feature vector

STUDY ON THE STABILITY OF GOLDEN SECTION ADAPTIVE CONTROL SYSTEMS BASED ON CHARACTERISTIC MODELLING

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STUDY ON THE STABILITY OF GOLDEN SECTION ADAPTIVE CONTROL SY...

第11届国际模糊系统协会世界大会

作者： Duoqing SUN Hongxin WUbeijing Institute of Control Engineering chinese {2. of Space Technology beijing 100080 china Department of Mathematics & Physics Hebei Normal university of Science & Technology Qinhuangdao 066004 china

＜正＞ The method of characteristic modelling provides a theoretical foundation for the designs of intelligent controllers and the control of higher-order plants by using lower controllers. However, for any linear time-invariant higher order plant with unknown parameters and order, the stability analysis of the adaptive control systems based on characteristic modelling is still an open question in general case. Based on Lyapunov’s direct method for time-variant discrete systems, this paper gives the conditions for the uniformly asymptotic stability of the golden section adaptive control systems based on characteristic modelling. The given conditions are only related to the variable rates of the closed-loop system parameters. The result in this paper can be used to analyze quantitatively the stability of time-variant discrete systems.

关键词： golden section adaptive control characteristic modelling asymptotic stability.

Control of Underactuated Manipulators with Uncertain Static Friction

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Control of Underactuated Manipulators with Uncertain Static ...

2.10 chinese Control and Decision Conference

作者： Mingjun Li~1,Baoli Ma~2.1.The Seventh Research Division,Beihang university,beijing 100191,{2. 2.The Seventh Research Division,Beihang university,beijing 100191,{2.

＜正＞In this paper the control of 2. underactuated planar manipulator with uncertain static friction is considered. The control process is divided into two *** the first phase,terminal sliding mode control is used to stabilize the passive joint to the desired position in finite time;during this phase the motion of the active joint is regarded as mechanical *** the second phase,the dynamic equation of the active joint becomes a linear equation with a limited control input and a parameter containing the uncertain static friction of the passive joint.A two-dimension fuzzy controller,the domain of which is dynamically adjusted,is applied to stabilize the active joint to the desired position, while the passive joint remains at its desired position all the *** simulation results indicate that the control scheme proposed in this paper is valid.

关键词： underactuated manipulators uncertain static friction terminal sliding mode fuzzy control

A Method for Evaluation of Warship Schemes Based on Grid-fuzzy Borda Number and Identical Degree of Set Pair

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A Method for Evaluation of Warship Schemes Based on Grid-fuz...

2.10 chinese Control and Decision Conference

作者： Jufeng Zhang~(1,2.,Yu Wang~(1,2.,Zhigang Fang~2.Xinghua Gao~2.1.School of Economics and Management,Harbin Engineering university,Harbin 150001,china 2.Naval {2. of Armament,beijing 100161,china

In order to overcome the limitations of AHP and linear weighted sum method for evaluation of warship demonstration schemes,a method combing grid-fuzzy borda number and identical degree of set pair is proposed. Grid-fuzzy borda number is used to calculate the weighs of the evaluation criteria and identical degree of set pair is employed to rank the feasible *** the provided method,weights reflect and centralize various opinions of experts in different *** addition,independence of indexes is not required.A case study shows that the approach is comprehensible and reasonable,and convenient to practical application.

关键词： Grid-fuzzy borda number Identical degree of set pair Scheme evaluation Decision-making

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从千层塔中微波协助提取石杉碱甲和石杉碱乙

中国生物工程杂志 2004年第11期24卷 87-89页

作者：查圣华李秀男孙海虹陈婷林海苏志国北京科技大学土木与环境工程学院北京100083 中国科学院过程工程研究所生化工程国家重点实验室

首先从 8种溶剂中筛选出硫酸作为微波协助提取的浸提溶剂 ,然后用正交试验确立了千层塔生物碱的最佳提取条件。以石杉碱甲和石杉碱乙回收率为指标 ,考察了溶剂倍数、溶剂浓度、微波处理时间等因素。结果表明 ,在室温下微波协助提取的最... 详细信息

首先从 8种溶剂中筛选出硫酸作为微波协助提取的浸提溶剂 ,然后用正交试验确立了千层塔生物碱的最佳提取条件。以石杉碱甲和石杉碱乙回收率为指标 ,考察了溶剂倍数、溶剂浓度、微波处理时间等因素。结果表明 ,在室温下微波协助提取的最优条件为 :酸浓度 0 8% (v v) ,液固比例 2.5∶1 ,微波处理时间 90s。 3.重复实验所得石杉碱甲和石杉碱乙回收率分别是 93.7%和 93.9% ,相对标准偏差分别为 1 79%和 1 5 6% (n =3.。与传统的回流提取工艺相比 ,过程时间从 2.缩短为 90s,回收率提高了 1 0 %以上。

关键词：石杉碱甲微波处理千层塔取石最佳提取条件回流提取生物碱溶剂硫酸工艺

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The Stability of C-phycocyanin Doped Silica Biomaterials in UV Irradiation

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Journal of Wuhan university of Technology(Materials Science) 2009年第6期24卷 852-856页

作者：李晔 Department of Chemistry School of Applied ScienceUniversity of Science and TechnologyBeijing China

The synthesized C-phycocyanins （C-PCs） doped silica biomaterials were characterized by the SEM and BET surface area analysis measurement. The morphology of C-PCs doped silica biomaterials indicates that the surface of the silica cluster is formed by a great number of silica particles with an average size of between 3. and 40 nm. Silica itself is a porous structure with the average pore diameter of 2.95 nm. Pores with their diameter less than 5 nm account for 84.07%. In addition, the C-PCs can be utilized as a fluorescent protein probe to monitor influence of the protein encapsulation and to study matrix and protein interaction and stability of protein in silica matrix. Application of protein encapsulation silica materials requires biomolecules to keep bioactivity and stability on potentially unfavorable industrial conditions. The C-PCs in solution or in silicate matrix irradiated by ultraviolet ray can result in photobleaching, whereas the protein in the silica is less affected. The measured photodamage rate constant of C-PCs in buffer solution is 2. times faster than that of C-PCs in silica matrix. However, the lifetime of C-PCs in silica matrix or phosphate buffer is unaffected. These studies suggest that entrapment of C-PCs into silica matrixes not only can maintain their biological activity but also noticeably improve their photostability.

关键词： C-phycocyanins silica biomaterials characterization stability

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Effects of TADs on the F region of the mid-latitude ionosphere during geomagnetic storms:A case study

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Effects of TADs on the F region of the mid-latitude ionosphe...

第十二届全国日地空间物理学术讨论会

作者： Zhigang Yuan~1 Baiqi Ning~2.Xiaohua Deng~1 1 School of Electronic Information,Wuhan university,Wuhan,43.072.R R.{3. 2.Institute of Geology,and Geophysics,{2. academy of Sciences,beijing 10002..R R.{3.

＜正＞Based on observations of two ionosondes at Wuhan and Kokubunji,this paper presents effects of an intense geomagnetic storm on the daytime mid-latitude ionosphere on March 3.,*** a positive ionospheric storm,the start of the enhancement of the foF2.（F2.peak plasma frequency） at Wuhan lags that at Kokubunji by 15 min,which corresponds to the time interval of traveling atmospheric disturbances

关键词：