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天文学进展 2003年第4期21卷 289-300页

作者：宋文彬汪景琇中国科学院国家天文台北京100012

太阳活动,除了涵盖太阳表面磁场驱动的活动现象外,还包括光度、自转和对称性等物理因素的长期演化。研究它们变化的周期对深入理解其产生机制有着重要的指导意义。从1984年Rieger等人首次发现耀斑的产生率存在约154 d周期始,人们在很多... 详细信息

太阳活动,除了涵盖太阳表面磁场驱动的活动现象外,还包括光度、自转和对称性等物理因素的长期演化。研究它们变化的周期对深入理解其产生机制有着重要的指导意义。从1984年Rieger等人首次发现耀斑的产生率存在约154 d周期始,人们在很多现象中都找到了它的踪影,150余d的周期成了继11 yr太阳活动周和27 d太阳自转周后最引人注目的新周期。重点综述了在耀斑、黑子等活动领域内对150 d周期现象研究的现状,介绍了有关它成因的研究进展,指出了尚待解决的问题及进一步努力的方向。

关键词：天体物理学周期性综述太阳活动与变化太阳磁场

Ethylene oligomerization by novel iron(Ⅱ) diimine complexes/MAO

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chinese Science Bulletin 2002年第19期47卷 1616-1618页

作者： WANG Hang, YAN Weidong, JIANG Tao, LIU Binbin, XU Wenqing, MA Jianjiang & HU YouliangState key laboratory of Engineering Plastics, Center for Molecular Science, Institute of Chemistry, chinese academy of sciences, beijing 100080, china Graduate Student of State key Lab. of Eng. Plastics Institute of Chemistry Chinese Academy of Sciences Beijing 100080 China Grad. Student chinese Acad. of Sci. Beijing 100039 China Inst. of Polymer Science/Engineering School of Chemical Engineering Hebei University of Technology Tianjin 300130 China Dept. of Petrochemical Engineering Daqing Petroleum Institute Anda 151400 China Res. Inst. Dushanzi Petrochem. Co. PetroChina Xinjiang 833600 China

Two novel Fe(Ⅱ) diimine complexes have been synthesized. In combination with MAO, they generate active catalytic systems that oligomerize ethylene with both high catalytic activity and high selectivity for a-olefins. The effects of substituents on the aryl ring, reaction temperatures and molar ratios of Al/Fe on catalytic activity and product distribution are studied.

关键词： late-transition-metal catalysts ethylene oligomerization α-olefin.

Increase in electron transfer activity in photosystemⅡof spinach thylakoids caused by conversion of phosphatidyl-glycerol to phosphatidic acid molecules

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chinese Science Bulletin 2003年第15期48卷 1581-1585页

作者： WU Feng, YANG Zhenle, LI Liangbi & KUANG Tingyun key laboratory of Photosynthesis and Environmental Molecular Physiology & Photosynthesis Research Center, Institute of Botany, chinese academy of sciences, beijing 100093, china Correspondence should be addressed to Yang Zhenle (e-mail: yangzhl @***) key laboratory of Photosynthesis and Environmental Molecular Physiology & Photosynthesis Research Center Institute of Botany Chinese Academy of Sciences Beijing 100093 China

The techniques of oxygen electrode polarography, sodium dodecyl sulfate-polyacryamide gel electrophoresis (SDS-PAGE) and thin layer chromatography (TLC) were employed to investigate the effect of phospholipase D treatment on physiological function of spinach thylakoids. It was shown that the phospholipase D treatment on thylakoid resulted in the degradation of phosphatidylglycerol (PG) and occurrence of phosphatidic acid (PA). The changes of PG to PA molecules caused an increase in oxygen evolution in photosystem Ⅱ (PSⅡ), which was accompanied by an uncoupling effect on thylakoid membrane. It was revealed that the head-groups of PG molecules play an important role in the maintenance of the appropriate physiological activity of thylakoid membrane.

关键词：电子转移活性类囊体光合作用菠菜磷脂酰甘油

Preliminary results of FeO mapping using Imaging Interferometer data from Chang'E-1

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Science Bulletin 2011年第Z1期 376-379页

作者： LING ZongCheng1,2,ZHANG Jiang1,2,LIU JianZhong1,ZHANG WenXi3,BIAN Wei1, REN Xin1,MU LingLi1,LIU JianJun1 & LI ChunLai1 1 national astronomical observatories,chinese academy of sciences,beijing 100012,china 2 School of Space Science and Physics & Shandong Provincial key laboratory of Optical Astronomy and solar-Terrestrial Environment, Shandong University at Weihai,Weihai 264209,china 3 academy of Opto-Electronics,chinese academy of sciences,beijing 100080,china

Information about the variability,and spatial distribution of iron abundance is important to understand lunar geological history and for future resource utilization. In this paper we present a preliminary model to produce an iron abundance map using images taken by an Imaging Interferometer on board the satellite Chang'E-1. Compared with the Clementine UVVIS images,the images from the Chang'E-1 satellite also allowed for the extraction of FeO abundance distributions on the Moon. However,the prelimi-nary model results suggest an underestimation of ～2 wt.% for the FeO content of the mare region and an overestimation of ～3 wt.% for the highland region.

关键词： Chang’E-1 Imaging Interferometer FeO mapping Clementine UVVIS

Bacterial Communities in a Buried Ancient Paddy Soil from the Neolithic Age

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Pedosphere 2010年第3期20卷 389-398页

作者： SHEN Wei-Shou YIN Rui LIN Xian-Gui CAO Zhi-Hong State key laboratory of Soil and Sustainable Agriculture Institute of Soil Science Chinese Academy of SciencesNanjing 210008 (China) College of Chemistry and Environmental Science Nanjing Normal University Nanjing 210097 (China) Joint Open laboratory of Soil and Environment Institute of Soil Science Chinese Academy of Sciences and Hong KongBaptist University Nanjing 210008 (China)

An ancient irrigated paddy soil from the Neolithic age was excavated at Chuodunshan Site in the Yangtze River Delta, close to Suzhou, china. The soil organic matter (SOM) content in the prehistoric rice soil is comparable to the average SOM content of present rice soils in this region, but it is about 5 times higher than that in the parent materials. As possible biomarkers to indicate the presence of the prehistoric paddy soil, the bacterial communities were investigated using the techniques of aerobic and anaerobic oligotrophic bacteria enumeration, Biolog analysis, and polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE). The results showed that in the buried soil layers, the prehistoric paddy soil had the largest number of aerobic and anaerobic oligotrophic bacteria, up to 6.12 and 5.86 log cfu g-1 dry soil, respectively. The prehistoric paddy soil displayed better carbon utilization potential and higher functional diversity compared to the parent materials and a prehistoric loess layer. The Shannon index and richness based on DGGE profiles of bacterial 16S rRNA genes were higher in prehistoric paddy soil than those in the prehistoric loess soil. It might be concluded that the prehistoric irrigated rice cultivation accumulated the SOM in plowed soil layer, and thus increased soil bacterial populations, metabolic activity, functional diversity and genetic diversity. Bacterial communities might be considered as the sensitive indicators of the presence of the prehistoric paddy soil in china's Yangtze River Delta.

关键词： biomarker denaturing gradient gel electrophoresis oligotrophic bacteria paleosols prehistoric paddy soil

Disposable Electrochemical Biosensor for Amperometric Measurement of β-hydroxybutyrate and Total Cholesterol

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稀有金属材料与工程 2006年第S3期 305-308页

作者： Huaqing Li~(1,2) Li Wang~1 Nenggao Rao~1 Dafu Cui~1 Xinxia Cai~(1,2) (1.State key laboratory of Transducer Technology,Institute of Electronics,chinese academy of sciences,beijing 100080,china) (2.Graduate School of chinese academy of Science,beijing 100080,china)

A new type of disposable thin-film amperometric biosensor has been developed for measurement ofβ-hydroxybutyrate and total cholesterol in *** biosensor consists of two plain gold electrodes mounted on a Polyethylene terephthalate （PET） *** reagent solution contains bienzymes （cholesterol oxidase and cholesterol esterase for total cholesterol,β-hydroxybutyrate dehydrogenase and diaphorase forβ-hydroxybutyrate respectively） with mediator （ferricyanide） were absorption at the surface of electrodes coated by electrodepositing platinum *** presence of the mediator lowers the applied potential and eliminates the interference from other oxidizable species enhancing the sensitivity and selectivity of the biosensor without modifying the dynamic parameters of the *** enzymes stably retains in the matrices of platinum black film improving the performance of the mediated *** linearity is observed in the concentration range from 1.0×10-4to 1.0×10-2mM and 1.0×10-4mM to 4.99×10-3mM with sensitivity of 1.958μA/mM and 2.447μA/mM *** optimized biosensor exhibits excellent reproducibility and stability retaining more than 90% of its original activity over a period of one *** simple operation of the biosensor mass-produced at low cost is expected to find clinical application and homecare.

关键词： amperometric β-Hydroxybutyrate total cholesterol ferricyanide platinum black

Conjugated Polymers as Multifunctional Biomedical Platforms:Anticancer activity and Apoptosis Imaging

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Conjugated Polymers as Multifunctional Biomedical Platforms:...

苯丙氨酰-tRNA合成酶的进化与结构域丢失(英文)

第一届全国生物物理化学会议暨生物物理化学发展战略研讨会

作者： Libing Liu,Shu Wang~* beijing national laboratory for Molecular sciences,and key laboratory of Organic Solids,Institute of Chemistry,chinese academy of sciences,beijing 100190,china

＜正＞Conjugated polymers（CPs） have established themselves as useful components in optoelectronic devices as diverse as light-emitting diodes,field effect transistors, photovoltaic cells and organic semiconductor **... 详细信息

关键词： Conjugated polymers anticancer activity apoptosis imaging

来源： cnki会议评论

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生物化学与生物物理学报 2003年第12期35卷 1061-1065页

作者：林军黄京飞中国科学院昆明动物研究所细胞与分子进化重点实验室中国科学院昆明动物研究所细胞与分子进化重点实验室昆明650223 中国科学院研究生院北京100039 云南省畜禽分子生物学重点实验室

基因的复制、融合以及基因的水平转移是许多蛋白质包括氨酰 tRNA合成酶 (aminoacyl tRNAsynthetase ,AARS)进化过程中的常见事件。然而作者研究的结果显示 ,苯丙氨酰 tRNA合成酶 (phenylalanyl tRNAsynthetase,PheRS)的进化主要表现为... 详细信息

基因的复制、融合以及基因的水平转移是许多蛋白质包括氨酰 tRNA合成酶 (aminoacyl tRNAsynthetase ,AARS)进化过程中的常见事件。然而作者研究的结果显示 ,苯丙氨酰 tRNA合成酶 (phenylalanyl tRNAsynthetase,PheRS)的进化主要表现为一些结构域的丢失 ;并且这种结构域的丢失不影响PheRS的功能或活性。通常在生物从细菌到真核生物的进化过程中 ,其基因组的大小和基因的数目都有所增加 ,然而有趣的是 ,真核生物中PheRS的结构域类型和数目都明显少于细菌的PheRS。PheRS通过结构域的丢失而进化的现象 ,似乎与某些AARS功能由多重专一性向单一专一性的演化有着“异曲同工”之妙。

关键词：苯丙氨酰-tRNA合成酶结构域丢失分子进化

OsWRKY03, a rice transcriptional activator that functions in defense signaling pathway upstream of OsNPR1

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Cell Research 2005年第8期15卷 593-603页

作者： Xiao Qiang LIU1,2, Xian Quan BAI1,2, Qian QIAN3, Xiu Jie WANG1, Ming Sheng CHEN1, Cheng Cai CHU1,* 1national key laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, chinese academy of sciences, beijing 100101, china 2Graduate School of the chinese academy of sciences, Yuquan Road, beijing 100039, china 3china national Rice Research Institute, chinese academy of Agricultural sciences, Hangzhou 310006, china nationalkeylaboratoryofPlantGenomics InstituteofGeneticsandDevelopmentalBiologyChineseAcademyofSciencesBei

WRKY family proteins are a class of plant specific transcription factors that involve in many stress response pathways. It has been shown that one Arabidopsis WRKY protein, AtWRKY29/22, is activated by MAP kinase signaling cascade and confers resistance to both bacterial and fungal pathogens. However, little is known about the biological roles of WRKY proteins in rice. In this study, we investigated the expression patterns of rice AtWRKY29/22 homolog, OsWRKY03, under different conditions, and also its possible role involved in plant defense. Our results showed that OsWRKY03 was up-regulated by several defense signaling molecules or different treatments. Further analysis revealed that the expres- sion of OsWRKY03 was light dependent. Transcriptional activation activity of OsWRKY03 was also demonstrated by yeast functional assay. Transient expression of OsWRKY03-GFP fusion protein in onion epidermis cells showed that OsWRKY03 was a nuclear localized protein. OsNPR1 as well as several other pathogenesis-related genes, such as OsPR1b, phenylalanine ammonia-lyase (ZB8) and peroxidase (POX22.3), were induced in OsWRKY03-overexpressing transgenic plants. These results indicated that OsWRKY03 is located upstream of OsNPR1 as a transcriptional activator in salicylic acid (SA)-dependent or jasmonic acid (JA)-dependent defense signaling cascades.

关键词： defense response OsWRKY03 transcription factor rice.