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2011 Chinese Control and Decision Conference（CCDC）

作者： Song Pu,Hong Jiang,HaiYan Zhao Information Institute of Southwest university of science and technology MianYang CN 621010 Information Engineering college, Southwest university of science and technology

In wireless ad hoc networks,multiple descriptions (MD) coding of video can effectively improve the quality of transmission,but there is a problem that how to choose the optimal *** order to solve the problem,particle swarm optimization algorithm with adaptive mutation (AMPSO) is presented in this paper,which is used to choose transport path of MD *** method can find the optimal solution quickly and effectively by following excellent particles to search the solution space,and introduce adaptive mutation operator to overcome premature *** results show that AMPSO can effectively guarantee the quality of wireless MD video *** average distortion derived from AMPSO reduces at least 0.04,0.13,0.06,and the speed of convergence is increased by 4 times compared with using GA,SAGA and SPTH algorithm to select routing.

关键词： PSO with adaptive mutation Multipath routing Multiple description video Ad hoc

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Structural studies of dicycloplatin,an antitumor supramolecule

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science china Chemistry 2010年第6期53卷 1346-1351页

作者： YANG XuQing1,2,JIN XiangLin2,SONG QinHua1,TANG KaLuo2,YANG ZhenYun1,ZHANG XiaoFeng1 & TANG YouQi2 1Beijing Suo Pu Xing Da Pharmaceutical Co.Ltd.,Beijing 100081,china 2college of Chemistry and Molecular Engineering,Peking university,Beijing 100871,china 1. Beijing Suo Pu Xing Da Pharmaceutical Co. Ltd. Beijing 100081 China2. College of Chemistry and Molecular Engineering Peking University Beijing 100871 China

The solubility and stability of platinum-based anticancer agents have a direct bearing on their activity and *** research has been conducted over the past decades in order to prepare drugs such as cisplatin and carboplatin with improved efficacy and reduced *** on the premise that supramolecular platinum agents may have superior physicochemical properties,we successfully designed a novel anticancer agent,dicycloplatin,which has proven to be active against a number of human *** crystal structure of dicycloplatin has been *** aqueous solution of dicycloplatin was also studied using electrospray ionization mass spectrometry (ESI-MS).Based on the experimental observations,a model of the structure in aqueous solution is proposed which explains both the higher solubility and higher stability of dicycloplatin compared with carboplatin.

关键词： dicycloplatin crystal structure supramolecule anticancer

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维普期刊数据库

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Design and Realization of Automatic Control System for Boiler based on Model Free Adaptive Control

Design and Realization of Automatic Control System for Boile...

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2011 Chinese Control and Decision Conference（CCDC）

作者： Jing Wang*,Chao Ji Liulin Cao,Qibing Jin Institute of Automation,college of Information science and technology Beijing university of Chemical technology,Beijing,china

To achieve good performance of the utility boiler,dynamic variables such as drum pressure,steam temperature and water level of drum,*** be *** to the operating rules and the characteristics analysis of industrial boiler,a complete control scheme for boiler is ***,due to the typical nonlinear and coupled characteristics of outlet pressure of boiler,a model free adaptive control (MFAC) method is used to maintain it at the respected *** automatic control system is realized by the DCS of SIMATIC PCS 7 *** between MFAC and traditional PID control in detailed prove the practicability and robustness of the MFAC control scheme proposed here.

关键词： boiler system MFAC PCS 7 BOX

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Ab Initio Study on the Isomerization and Dehydrogenation of Methylnitrene

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Chemical Research in Chinese Universities 1989年第4期5卷 325-330页

作者： Chen Bin, Zhao Chengda, Fu Qiang and Huang Jingan (Deparment of Chemistry, Northeast Normal university, changchun)

The ab initio calculations were performed at the RHF/4-31G level with the reaction pathways of the iso-merization and dehydrogenation of methylnitrene by the intrinsic reaction coordinate method. The results show that the transformation from methylnitrene to methylenimine would be very easy. This accountes for the experimental fact that one couldn' t find the methylnitrene, but only obtained the methylenimine in the pyrolysis of methyl azide. The mode-selective study reveals the reaction coordinates (IRC) of isomerization and dehydrogenation of methylnitrene are associated with the molecular deformation mode of 1191 cm-1 and the methyl group unsymmetrical stretch mode, respectively. The coupling between normal coordinates is favourable to select the reaction channel of isomerization.

关键词： ab initio IRC analysis mode-select

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维普期刊数据库

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DNA methylation is involved in regulation of miR-210 expression in embryonic neural progenitor cells

DNA methylation is involved in regulation of miR-210 express...

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中国生理学会第23届全国会员代表大会暨生理学学术大会

作者： Lei XIONG~(1,2),Zhao-Hui LIU~1,Tong ZHAO~1,Xin HUANG~1,Li-Ying WU~1,Hong-Bing SHU~2,Ling-Ling ZHU~(1,*), Ming FAN~(1,*) 1 Department of Brain protection and Plasticity,Institute of Basic Medical sciences,Beijing 100850,china 2 college of life science, Wuhan university,Wuhan 430072,china

Introduction:MicroRNA(miRNA) plays critical roles in a large number of cellular processes,including neural development,cell survival and cell *** previous work showed a link between miRNA expression and hypoxia,a neural stem/progenitor cells(NPCs) microenvironment ***-based expression profiles revealed that a specific spectrum of miRNAs in NPCs were up-regulated under hypoxic conditions,including miR-210,which via a hypoxia inducible factor-1(HIF-1)-dependent ***,we demonstrate that besides the HIF-1 pathway,the expression of miR-210 in NPCs is also regulated by DNA methylation under ***:First,we detectd the expression level of miR-210 in NPCs treated with the DNA-demethylation agent 5-aza-2’-deoxycytidine(AZA) by ***,we detected the methylation rate of miR-210 in NPCs exposed to different oxygen concentration by bisulfite *** then determined the cell survival and apoptosis after miR-210 over-expression in NPCs by Cell Counting kit-8 and TUNEL ***:MiR-210 is embedded in a CpG island,and its expression level is increased in NPCs treated with DNA methylation inhibitor(AZA) even under *** sequencing of multiple independent miR-210 clones show a decrease from 24% methylation in NPCs under 20%O to 18%under 3%O,or 12%under 0.3%*** find a CpG dinucleotide especially changed from hemimethylation under 20%O to approach little-methylation under 3%or 0.3%O. Hypoxia results in demethylation of miR-210,and hypomethylation can lead to epigenetic activation of the *** addition,overexpression of miR-210 increases the survival rate of NPCs exposed to extreme ***: These results demonstrate that hypoxia can up-regulate the expression of miR-210 by decreasing the methylation level of the genome DNA,which is an important element of NPCs response to extreme hypoxia by affecting cell survival.

关键词： miR-210 hypoxia methylation neural stem or progenitor cells cell survival

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A Study of the Formation Mechanism of Flame Retardant Functional Layer on the Surface of Jute

A Study of the Formation Mechanism of Flame Retardant Functi...

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2011中国材料研讨会

作者： Cancan Wang 1,2,Bingshe Xu 1,2,Liqiao Wei 1,2 (1 college of Materials science and Engineering,Taiyuan university of technology,Taiyuan 030024 2 Key Laboratory of Interface science and Engineering in Advanced Materials,Ministry of Education,Taiyuan university of technology,Taiyuan 030024)

This paper synthesizes a kind of phosphorus flame retardant -allyl dimethyl *** retardant functional layer comes into being on the surface of jute by integrating ultraviolet ray （UV） radiation with *** functional layer was analyzed by Fourier transform infrared spectroscopy （FTIR）,scanning electron microscopy （SEM）,thermogravimetry （TG）,differential thermal analyzer （DTA）,and X-ray diffractometer （XRD）.The results indicate that UV radiation promotes the formation of free radicals on the jute’s surface,which are liable to produce grafting reaction with phosphate *** leads to the formation of flame retardant functional layer in the form of valence bond so that the processed jute possesses lasting flame retardant *** combustion testing,the combustion performance reaches to B 2 level of GB 8624-1997 Classification on Burning Behaviour for Building *** addition,the formation mechanism and flame-retardant mechanism of functional layer on the surface of jute has laid theoretical research foundation for the material design and controlled craft of jute fiber’s *** evaluation on the feeling of jute and the elements that affect the hand feeling are analyzed.

关键词： jute fiber surface flame retardent functional layer formation mechanism

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Phylogenetic analysis of Bellamya(Gastropoda:Viviparidae) based on mitochondrial COI and 16SrRNA genes

Phylogenetic analysis of Bellamya(Gastropoda:Viviparidae) ba...

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中国动物学会·中国海洋湖沼学会贝类学分会第九次会员代表大会暨第十五次学术讨论会

作者： Mingchao Jiao~(1,2) Minwen Chen~1 Daxian Zhao~1 Shan Ouyang~1 Guangchun Lei~3 Xiaoping Wu~(1,2) 1.college of life sciences and Food Engineering,Nanchang university,Nanchang 330031,china 2.Institute of life science,Nanchang university,Nanchang 330031,china

Bellamya(Gastropoda:Viviparidae) is widely distributed in china expect for some special regional distributed *** most widely distributed species are Bellamya quadrata,Bellamya purificata and Bellamya *** performed this study to testify the mitochondrial COI gene and 16SrRNA as DNA barcodes to identify species at the Bellamya *** on the genetic distance and phylogenetic tree of COI gene and 16SrRNA gene of Bellamya species,we concluded that COI gene was a valid marker for DNA barcoding of Bellamya taxa,and 16S rRNA gene could also be a substitute gene as DNA barcodes;The results showed that Bellamya aeruginosa and Bellamya purificata formed sister groups,and all individuals of each species formed a clade in the phylogenetic ***,the data do not support that Bellamya dispiralis exists as an effective species,and we infer that Bellamya dispiralis may be incorporated into the species of Bellamya *** study on the taxonmic status of such groups of species could has important significance in understanding the evolutionary relationships and phylogenetic of Bellamya snail.

关键词： DNA barcoding Phylogenetic Bellamya COI gene 16SrRNA gene

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Analysis and Simulation of Stimulated Brillouin Scattering in All-Fiber Single-Frequency Fiber Amplifiers with Delivery Fibers

Analysis and Simulation of Stimulated Brillouin Scattering i...

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2010亚洲光电子会议高功率激光器及其应用分会场

作者： Jinyong Leng Chunbo Yang Shengping Chen college of Optoelectronic science and Engineering National university of Defense technology Changsha Hunan 410073 china

The influence of the delivery fibers,drawn by pump combiner or added initiatively,on stimulated Brillouin scattering（SBS） is discussed,based on the rate-equations combining with *** impacts of pump schemes are simulated and the results indicate that the amplifier performance is considerable undermine by the delivery fiber in co-and counter-pumped *** a suitable pump scheme for high power all-fiber amplifiers,we focus on the situation in the co-pumped amplifiers,in which the lengths,Brillouin gain coefficient and core diameter of the delivery fiber make great impacts on the performance of *** impacts of the temperature gradients along the fiber,which can broaden the SBS gain profile and thereby suppress SBS,on the amplifier performances are *** suppression scheme is proposed to overcome the influences of delivery fiber on the amplifier performance.

关键词： all-fiber amplifiers delivery fibers stimulated Brillouin scattering SBS suppression

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高温相变蓄热容器的优化设计及参数分析

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太阳能学报 2003年第4期24卷 513-517页

作者：崔海亭袁修干邢玉明北京航空航天大学飞行器设计与应用力学系

高温相变蓄热容器是空间太阳能热动力发电系统关键部件吸热器的基本部件,它的传热性能直接影响到整个动力系统的性能。建立了相变容器的目标函数和约束方程,利用优化方法求出了设计变量的最佳参数,分析了容器的壁厚、外径和长度等参数... 详细信息

高温相变蓄热容器是空间太阳能热动力发电系统关键部件吸热器的基本部件,它的传热性能直接影响到整个动力系统的性能。建立了相变容器的目标函数和约束方程,利用优化方法求出了设计变量的最佳参数,分析了容器的壁厚、外径和长度等参数对容器性能的影响,结果表明蓄热容器参数对吸热器的性能和质量有重要的影响,计算结果可以用于吸热器的设计。

关键词：蓄热容器优化设计

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维普期刊数据库

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Simple Grid Based on Cognitive Mechanism and Application Research on Description for Structure of Chinese Character

Simple Grid Based on Cognitive Mechanism and Application Res...

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第二十六届中国控制会议

作者： Liang Tiancai,Qiu Zhiwen,Pi Youguo college of Automatic science & Engineering,South china university of technology,Guangzhou 510641,P.R.china

Structure of Chinese character is so complex that it is difficult to be describe by computer,which block process of imformationization of Chinese character *** simple grid which is easy to be implemented by computer is proposed by the paper,and the application of description to structure of Chinese character is also *** basic configuration and its extensioned configuration are introduced *** experiment on Secondary Chinese character Basic Set within GB2312 is performed,and method of experimentation is given by the *** of experimentation prove that method of description to structure of Chinese character based on simple grid is feasible.

关键词： Cognitive System Image analysis Simple Grid Description of Chinese Character Structure

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