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STUDY ON FLUX-CORED WIRE FOR ELECTRIC ARC SPRAYING AND PROPERTIES OF COATING

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chinese Journal of Mechanical Engineering 2001年第4期14卷 366-369页

作者： Li Zhuoxin, Huangfu Ping (Institute of Material Science and Engineering,beijing Polytechnic university) Chen Banggu (Tianjin university) 北京工业大学北京天津大学天津

According to the characteristics of electric arc spraying technology and abrasion of boiler piping,a flux cored wire SMD 45 for electric arc spraying is developed The experimental results show that the surface hardness of the coating reaches 60～65 HR and the adhesive strength between the coating and base is 2.～2. MPa The wearability of the coating sprayed by the wire is 5 times than that of ordinary steel pipe Applying the wire to the heated surface,the life of the economizer pipe is doubly increased No local desquamation,rust and abrasion can be examined during more than one year's service.

关键词： Abrasion resistance Electric spraying Flux cored wire

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个人主义与集体主义结构的验证性研究

心理科学 2003年第6期26卷 996-999页

作者：王永丽时勘黄旭中国科学院心理研究所 100101 格罗廷根大学

本文用实证方法通过对中国大陆 30 3名被试的调查 ,对个人主义、集体主义的维度及其测量问卷的构想效度进行初步验证 ,结果支持Triandis提出的个人主义、集体主义可以分成水平、垂直两个维度 ,在个人水平上 ,个人主义与集体主义有四种... 详细信息

本文用实证方法通过对中国大陆 30 3名被试的调查 ,对个人主义、集体主义的维度及其测量问卷的构想效度进行初步验证 ,结果支持Triandis提出的个人主义、集体主义可以分成水平、垂直两个维度 ,在个人水平上 ,个人主义与集体主义有四种类型的构想。验证性因素分析表明 ,Singelis的问卷有较好的构想效度 ,但在中国被试的测试结果上表现出一些题目的不适合。

关键词：个人主义集体主义构想效度 Singelis 态度量表文化差异 Thriandis

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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次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

青岛文昌鱼硫氧还蛋白基因的克隆及同源性分析

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山东大学学报（理学版） 2003年第1期38卷 103-105,109页

作者：黄向炜陈忠科童维王雪飞王新淮张红卫山东大学生命科学学院发育研究所济南250100 中国科学院北京华大基因研究中心北京1001300

通过对文昌鱼神经胚cDNA文库进行测序 ,获得含文昌鱼硫氧还蛋白基因全部读框的cDNA序列 ,并演绎出对应的氨基酸序列 ,对其可编码蛋白进行了分析预测 ,还与多种脊椎动物和无脊椎动物中同种蛋白的同源性进行比较分析 .发现该蛋白具有典型... 详细信息

通过对文昌鱼神经胚cDNA文库进行测序 ,获得含文昌鱼硫氧还蛋白基因全部读框的cDNA序列 ,并演绎出对应的氨基酸序列 ,对其可编码蛋白进行了分析预测 ,还与多种脊椎动物和无脊椎动物中同种蛋白的同源性进行比较分析 .发现该蛋白具有典型的硫氧还蛋白活性部位 ,与脊椎动物硫氧还蛋白的同源性大于无脊椎动物 ,说明作为脊椎动物和无脊椎动物之间典型的过渡类型 ,文昌鱼在进化上更接近于脊椎动物 .

关键词：文昌鱼硫氧还蛋白基因进化

Microsatellite Analysis in 2.Populations of Kunming Mice

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Microsatellite Analysis in 2 Populations of Kunming Mice

实验动物与药理学、毒理学研究学术交流会

作者： Haitao Shang~1,Hong Wei~1,Bingfei Yue~2.Ping Xu~3,Honggang Huang~4 1Department of Laboratory Animal Science,College of Basic Medicine,Third Military Medical university, Chongqing 400038,People's Republic of China 2.National Institute for the Control of Pharmaceutical and Biological Products,beijing 100050,People's Republic of China 3Shanghai Laboratory Animal Science Center,{2. academy of sciences,Shanghai 2.1615,People's Republic of China 4Institute of Animal Science,{2. academy of Agricultural sciences,beijing 100094,People's Republic of China

Objective To evaluate the molecular genetic profiles of Kunming mice and the extent of genetic differentiation among *** 15 microsatellite markers were screened by a fluorescence-based semi-automated genotyping method for the 2.main populations of Kunming mice from beijing(BJ) and Shanghai(SH) in *** observed number of alleles,effective number of alleles,observed heterozygosity,unbiased expected heterozygosity and Shannon information index were used to estimate the genetic variation within *** A total of 89 alleles were detected in the 2.populations,with 2.12.at each locus,and the mean unbiased expected heterozygosity was 0.572.,which implies that there is abundant genetic variation in the populations of Kunming *** differentiation was shown by shared alleles,F-statistics,Nei genetic distance and Nei genetic *** population BJ and population SH,respectively,only 35 of 61 and 35 of 63 alleles were shared by *** Fst per locus varied from 0.0131(D2.it30) to 0.5697(D7Mit2.1) and the average Fst of all loci was 0.1433,which indicates moderate genetic differentiation between the 2.Kunming mice *** differences were also observed by Nei's(1972. genetic distance(0.3987)and Nei's(1978) unbiased measures of genetic distance(0.3881) estimates of *** There is abundant genetic variation in the populations of Kunming mice,and moderate genetic differentiation between the 2.Kunming mice populations.

关键词： Kunming mice Microsatellite Outbred colony Genetic differentiation

PRELIMINARY STUDY OF GEOLOGY AND GEOMORPHOLOGY OF LUONAN BASIN

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地学前缘 2000年第S1期7卷 332-332页

作者： Zhou Houyun 1, Han Mukang 2. Hou Jianjun 3[WT5,5”BX](1 Guangzhou Institute of Geochemistry, the chinese academy of Science, Guangzhou 510640, China 2.Department of Urban and Environmental {2., Peking university, beijing 100871, China 3 Dep

Luonan Basin, formed during Neo\|tectonic movements, is one of the small block basins in East Qinling Mountain. Three faults, Tieluzi Fault, Dajing\|Guojiayuan Fault and Beisi Fault bound it. The west part of the basin is higher than the east part. The elevation, usually more than 1100meters in the west, decreases gradually to less than 800meters in the east. The Cenozoic deposit in Luonan Basin is thin in the west part and becomes increasingly thick towards the east part. The total thickness of both the Eogene and the Neogene is only more than 100meters at Dajing. At Duishan, a place close to Luonan county town, it is about 400meters, and at Gucheng, it becomes nearly 1750meters. The strata crop out in the west part of the basin, usually the Eogene and the Neogene, are older than those in the east part which are usually the Quaternary deposits. The pattern of the Cenozoic deposits in Luonan Basin is similar to that in Shangzhou Basin (Li Kaoshe, personal communication), a basin locating just to the south of Luonan Basin.

关键词： East Qinling Mountain Luonan basin topography Cenozoic deposits structural landforms Tieluzi fault eastwards movement

The Spatial Database of Digital Geological Map of China at 1:1M

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The Spatial Database of Digital Geological Map of China at 1...

第五届全国地质制图与GIS学术讨论会

作者： DING Xiaozhong~1 HAN Kunying~(1,2. KE Xue~1 JU Yuanjing~1 PANG Jianfeng~1 1,Institute of Geology,chinese academy Geology Science,{2. 100037,China. 2.Faculty of Geosciences and Resources,China university of Geosciences,{2. 100083, China.

＜正＞The Spatial Database of the Digital Geological Map of China at 1:1 M（V1.0）is made up of 64（whole and partial）map sheets,Each map sheet is represented by the rectangle of 6°longitude and 4°latitude,according to the international map standard at 1:1M,It mainly includes geological map database,geographical map database,metadata database et al,The geological map database is constructed on the basis of the 1:500 000 geological map database（1999）,and it absorbs the latest information and outcomes of 1:2.0 000,1:50000 geological mapping and special subject study,It contains strata,igneous rock,fault,special geological unit（eclogite, blueschist,ophiolite et al.）,isotope age determination and drill hole et al,According to the feature and requirement of the geological map database,the geographical map database was constructed on the basis of 1:1 M topographical map database（ArcInfo） which provided by National Geomatics Center of China,It contains boundaries,river system,inhabitant areas,transportation et al,The Spatial Database of Digital Geological Map of China at 1:1M was built with MapGIS,ArcGIS and Access,The quantity of data is as large as 2.0GB,The spatial database management system possesses functions of map retrieval andquery,automatic map making and automatic legend drawing,The database system will serve on the network in the future,which should be updated and maintained regularly.

关键词：

Modulation of theta and gamma oscillations in central olfactory pathway by behavioral state

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Modulation of theta and gamma oscillations in central olfact...

中国神经科学学会第九届全国学术会议暨第五次会员代表大会

作者： Qing LIU~(1,3),Rui-Qi WU~(1,3),An-An LI~1,Fu-Qiang XU~(1,2.*) 1 Wuhan MRC,State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics,Wuhan Institute of Physics and Mathematics,the chinese academy of Science,Wuhan 430071,China 2.Wuhan National Laboratory for Optoelectronics,Wuhan 430074,China 3 {2. university of chinese academy of Science,beijing 100049,China

＜正＞Objective In mammalian olfactory pathway,the oscillatory activities of the olfactory bulb（OB）,piriform cortex（PCX）and hippocampus（HPC）have been extensively studied to elucidate odor information processing. However,less is known about the oscillations of spontaneous activity and the modulation by behavioral state, especially for the theta（4-12.Hz）and gamma（35-100 Hz）*** In the present study,local field potentials （LFP）of spontaneous activity were recorded from the OB,PCX and HPC simultaneously in awake and anesthetized *** Compared with the anesthetized state,awake mice showed increased theta and gamma oscillations in all the three regions,but decreased coherences among ***,the spontaneous activities in exploratory walking and motionless mice were *** exploratory state,the power of theta oscillations in the PCX and HPC was decreased,whereas the power of theta in the OB and gamma in all regions were increased significantly. However,the coherences among the three brain regions for both theta and gamma oscillations were significantly *** was also found that the coherence between the PCX and the HPC was always the highest regardless of brain *** These results suggest that the theta and gamma oscillations in central olfactory pathway could be modulated by behavioral state,and that the higher coherences of both theta and gamma oscillations between PCX and HPC indicate tighter functional coupling between them.

关键词： oscillation olfactory bulb piriform cortex hippocampus functional coupling

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黎曼流形上混合边值问题的第一特征值估计

数学学报（中文版） 2003年第5期46卷 843-850页

作者：杨洪苍中国科学院数学与系统科学研究院数学研究所

设M为一带边界M的紧致Riemann流形,本文考虑M上的下述混合边值条件的特征值问题 (△u+v_1u=0, u/n+αu|M=0,)其中n为M的外法向单位向量,α为一正常数。

关键词：特征值黎曼流形混合边值条件