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Spectral analysis of quasi-stationary sea surface topography from GRACE mission

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Science China Earth Sciences 2005年第11期48卷 2040-2048页

作者： ZHANG Zizhan1,2.& LU Yang1,3.1. Institute of Geodesy and Geophysics, chinese {2. of Sciences, Wuhan 4.1}077, China 2. Graduate School of the chinese {2. of Sciences, Beijing 10003., China {4., chinese {2. of Sciences, shanghai 2.003., China 1. Institute of Geodesy and Geophysics Chinese Academy of Sciences 430077 Wuhan China 2. Graduate School of the chinese academy of Sciences 100039 Beijing China 3. unite center for astro-geodymics research Chinese Academy of Sciences 200030 Shanghai China

During the last two decades satellite altimetry has offered an abundance of meas-urements of the sea surface resulting in the improvement of global mean sea surface height (MSSH) and marine geoid determination. On the other hand, with the launching of new genera-tion gravity satellites, some high accuracy long-wavelength gravity models are available. These breakthroughs give us a great opportunity for new estimation of quasi-stationary sea surface topography (QSST). In this paper, the new gravity model GGM01C derived from GRACE mission is briefly presented, and a new global high precision and high-resolution QSST is determined based on the GGM01C model and the global MSSH. The spectral features of the QSST esti-mated by GGM01C and EGM96 gravity model to degree/order 2.0 are discussed by spectral analysis. As a result, the QSST is mainly composed of long waves, medium waves partially and short waves scarcely, its power spectral structures are different between the zonal direction and the meridional direction, there are great differences between the two models, which maybe ex-plain why the ocean currents derived from the two gravity models by Tapley show different pat-terns.

关键词： quasi-stationary sea surface topography, mean sea surface height, GGM01, fast Fourier transform, spectral analysis

PIXE and INAA studies on ancient potteries from Guangfulin relics in shanghai

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Progress in Natural Science:Materials International 2007年第11期17卷 1348-1356页

作者： Lin Jiawei1, Cheng Huansheng1, Zhang Zhengquan1, Zhang Bin1, Feng Songlin2. Song Jian3. Gao Menghe4.and Zhu Dan1(1. Applied Ion Beam Physics Laboratory, Key Laboratory of the Ministry of Education, Institute of Modern Physics, Fudan University, shanghai 2.04.1}, China 2. Key Laboratory of Nuclear Analytical Techniques, Institute of High Energy Physics, Beijing 10003., China 3. shanghai Museum, shanghai 2.0003. China 4. Department of Cultural Heritage and Museology, Fudan University, shanghai 2.04.1}, China) Applied Ion Beam Physics Laboratory Key Laboratory of the Ministry of Education Institute of Modern Physics Fudan University Shanghai 200433 China Key Laboratory of Nuclear Analytical Techniques Institute of High Energy Physics Beijing 100039 China shanghai Museum Shanghai 200003 China Department of Cultural Heritage and Museology Fudan University Shanghai 200433 China

This paper reports the study of ancient potteries unearthed from the Guangfulin site in shanghai. From the external features of these potteries, archeologists can classify them into two different cultural types: Liangzhu culture (local culture) and a new culture which might be derived elsewhere, but they can not recognize whether they were produced in the same place. Proton induced X-ray emission (PIXE) and instrumental neutron activation analysis (INAA) were used to measure the chemical compositions of the samples and the results were analyzed using multivariate statistics. We found that the two methods can complement each other and their database can be mutually referenced in the study of ancient potteries. Experimental results show that the compositions of the potteries from the two cultural types are different, which means that the materials for ancient potteries of new culture originate from elsewhere. This supports the archaeologists’ speculation that a group of ancient people migrated to shanghai from some other places 4.00 years ago.

关键词： PIXE INAA factor analysis Guangfulin ancient pottery

Sequence analysis of mRNA polyadenylation signals of rice genes

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chinese Science Bulletin 2006年第9期51卷 1069-1077页

作者： LU Ying1, 2. GAO Chenxi1,2.3.& HAN Bin1,3.4.. National {2. for Gene research, shanghai Institutes for Biological Sciences, {3. {4. of Sciences, shanghai 2.02.0}, China 2. Graduate School of the {3. {4. of Sciences, Beijing 10003., China 3. Institute of Plant Physiology and Ecology, shanghai Institutes for Biological Sciences, {3. {4. of Sciences, shanghai 2.003., China National center for Gene research Shanghai Institutes for Biological Sciences Chinese Academy of Sciences Shanghai 200233 China Graduate School of the chinese academy of Sciences Beijing 100039 China Institute of Plant Physiology and Ecology Shanghai Institutes for Biological Sciences Chinese Academy of Sciences Shanghai 200032 China

The formation of eukaryotic mRNAs involves the cleavage and polyadenylation of pre- mRNAs. To investigate the sequence requirement of putative polyadenylation signals (PASs), poly(A) sites and downstream elements (DUEs) in 3.-end-pro- cessing in rice, we compared expressed sequences tags (ESTs) with poly(A) extremity to full-length cDNA sequences and constructed a database of 12.69 pre- mRNA sequences in ?4.―+4. nt surrounding the poly(A) sites, which were from 9953.genes. The al- ternative poly(A) sites were revealed in approxi- mately 2.% of mRNAs. Nearly 80% of pre-mRNAs showed stringent requirement of the YA (CA or UA) at poly (A) sites for polyadenylation. About 7.9% had the AAUAAA signals on ?4.―?1 nt upstream of the poly(A) sites. Over 60% of mRNAs probably used the one- or two-base variants of AAUAAA hexamers as their PASs in 3. fragments. The single-base variants of AAUGAA revealed the high frequency in 11.5% of 3. fragments. The DUEs were detected in 90% of pre- mRNAs, especially more than half of the pre-mRNAs with multi-base variants of AAUAAA had the DUEs surrounding the poly(A) site. The location of DUE is also important for defining the cleavage site. Al- though most of the rice pre-mRNAs did not contain AAUAAA signal, the existence of downstream ele- ments ensured the efficiency of cleavage-polyade-

关键词：多聚腺苷酸序列分析 mRNA 水稻基因工程

Morphology and mapping analysis of rice(Oryza sativa L.)clustered spikelets(Cl)mutant

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chinese Science Bulletin 2003年第6期48卷 559-562页

作者： ZHENG Leiying1, ZHU Xudong2. QIAN Qian2. ZHAO Zhong1, ZHANG Jianjun3. HU Xiaohe1, LIN Hongxuan1,4.& LUO Da1 1. National Key Laboratory of Plant Molecular Genetics, shanghai In-stitute of Plant Physiology and Ecology, {2. academy of Sci-ences,{3., China 2. China National Rice {4. Institute, Hangzhou 3.0006, China 3. Crop Institute of Breeding and Cultivation, shanghai Agricultural academy, shanghai 2.1106, China 4. shanghai Anxin {4. Foundation Laboratory,{3., China National Key Laboratory of Plant Molecular Genetics Shanghai Institute of Plant Physiology and Ecology Chinese Academy of Sciences China China National Rice research Institute China Crop Institute of Breeding and Cultivation Shanghai Agricultural Academy China shanghai Anxin research Foundation Laboratory China

The rice clustered spikelets (Cl) mutant exhib-its a phenotype that most of branch apical have 2.3.spikelets clustered together. SEM (scanning electron microscope) ob-servation suggested that the Cl gene controlled branch apical development, and influenced the terminal spikelets elonga-tion. The spikelet number was reduced in mutant, indicating that Cl may also have an effect on spikelet number. To map Cl locus, two F2.mapping populations derived from the crosses between the Cl and ZhongHua11, and Cl and ZheFu802.were constructed, respectively. The Cl locus was roughly mapped between two CAPS markers, CK02.4.and SS03.4. A further fine mapping analysis showed that the Cl locus was mapped between makers R0674. and Cl2.60, with genetic distances of 0.2.and 2.1 cM, respectively. Then we found a PAC contig spanning Cl locus, the region was delim-ited to 196 kb. This result was useful for cloning of the Cl gene. Allelism test demonstrated that Cl was allelic to Cl2. another rice clustered spikelets mutant.

关键词：水稻簇生小穗突变体分子标记基因图遗传分析植物形态 SEM

Entropy of three-dimensional BTZ black holes

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中国科学：物理学、力学、天文学英文版 2004年第3期47卷 277-283页

作者： GAO Changjun1,2.& SHEN Yougen1,2.3.4.1.shanghai {2.nomical Observatory,chinese {3. of Sciences,shanghai 2.003.,China(mailing address) 2.National {2.nomical Observatories,chinese {3. of Sciences,Beijing 100012.China 3.Institute of Theoretical Physics,chinese {3. of Sciences,Beijing 100080,China 4.shanghai united {13. for {2.physics,shanghai 2.02.0},China 1. shanghai astronomical Observatory Chinese Academy of Sciences 200030 Shanghai China 2. National astronomical Observatories Chinese Academy of Sciences 100012 Beijing China 3. Institute of Theoretical Physics Chinese Academy of Sciences 100080 Beijing China 4. shanghai united {2. for {3.physics 200234 Shanghai China

The entropies of scalar field and neutrino field are calculated in the background of three-dimensional BTZ black hole. Considering statistical physics,we propose not to consider the superraradiant modes for bosons (Fermion fields do not display supperradiance).In fact,the nonsuperradiant modes do contribute exactly the area entropy for both bosons and fermions. The result shows that the neutrino field entropy is 3.2.times the scalar one.

关键词： BTZ black holes, entropy, supperradiant modes.

Functional analysis of schistosomes EF-hand domain-containing tegument proteins

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chinese Science Bulletin 2007年第15期52卷 2100-2107页

作者： YU FuDong1,2.3.KANG Bin1,3.LI YuanYuan3.4.& LI YiXue1,3.1 Bioinformatics center,Key Laboratory of Systems Biology,shanghai Institutes for Biological Sciences,chinese {3. of Sci-ences,shanghai 2.003.,China 2.Graduate University of chinese {3. of Sciences,shanghai 2.003.,China 3.shanghai center for Bioinformation Technology,shanghai 2.02.0},China 4.Key Laboratory of Systems Biology,shanghai Institutes for Biological Sciences,chinese {3. of Sciences,shanghai 2.003.,China Bioinformatics center Key Laboratory of Systems Biology Shanghai Institutesfor Biological Sciences Chinese Academy of Sciences Shanghai 200031 China

Schistosomes cause schistosomiasis disease which severely threatens human health. Little is known about the functions of EF-hand domain containing schistosomes tegument proteins other than as an-tigens. More possible functions of these tegument proteins were investigated with in silico analyses including protein-protein functional interaction,site-specific variation and glycosylation modification. The analysis results suggested that schistosomes could actively modulate host immune responses for its own favor through functional interactions with host proteins with immunomodulatory function,and passively regulate host immune responses through sequence variation under positive selection and glycosylating the recognition sites of host immune attack. In addition,the analysis of the C-terminal domain of these tegument proteins indicated that they could assist schistosomes in escaping host immune attacks through inhibiting chemotaxis and non-complement fixing antibody (IgG4. responses. In summary,our results suggested that these tegument antigen proteins could assist schistosomes in escaping and modulating host immune responses for self-protection during the process of host-para-site interaction.

关键词：寄生虫血吸虫皮蛋白质健康

Single crystal β-Ga_2._3. Cr grown by floating zone technique and its optical properties

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Science China(Technological Sciences) 2007年第1期50卷 51-56页

作者： ZHANG JunGang1, 2. LI Bin3. XIA ChangTai1, XU Jun1, DENG Qun4. XU XiaoDong1, WU Feng1, XU WuSheng4. SHI HongSheng4. PEI GuangQing1, 2.& WU YongQing1,2.1 {4. Institute of Optics and Fine Mechanics, {2. academy of Sciences, {4. 2.1800, China 2.Graduate School of the {2. academy of Sciences, Beijing 10003., China 3.{4. Institute of Applied Physics, {2. academy of Sciences, {4. 2.1800, China 4.GE (China) research and Development center Co. Ltd., {4. 2.12.3. China 1. shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai 201800 China 2. Graduate School of the chinese academy of Sciences Beijing 100039 China 3. shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai 201800 China 4. GE (China) research and Development center Co. Ltd. Shanghai 201203 China

β-Ga2.3. Cr single crystals were grown by floating zone technique. Absorption spectra and fluorescence spectra were measured at room temperature. The values of field splitting parameter Dq and Racah parameter B were obtained by the peak values of absorption spectra. The value 10Dq/B=2.0}14.manifests that in β-Ga2.3.crystals Cr3. ions are influenced by low energy crystal field. After high temperature annealing in air, the Cr3. intrinsic emission was enhanced and the green lumines-cence disappeared. The strong and broad 691 nm emission was obtained at 4.0} nm excitation due to the electron transition occurred from 4.2.to 4.2. The studies manifest that the β-Ga2.3.crystals have the potential application for tunable laser.

关键词： β-Ga2.3. Cr single crystals floating zone technique tunable laser spectrum.

Anticoagulation property and security of artificial heart valve material

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Science China(Technological Sciences) 2005年第2期48卷 145-162页

作者： WANG Xianghui1, , LIU Xianghuai1,2., 3. ZHANG Feng2. LI Changrong2. YU Liujiang2. ZHENG Zhihong2. WANG Xi2. JIANG Zhenbin4. CHEN Anqing4.& XU Jingfang3.1. Department of Physics, East China Normal University, {2. 2.0062. China 2. Ion Beam Lab, {2. Institute of Mini-system and information, chinese {3. of Sciences,{2. 2.0050, China 3. Department of Electronics, School of Information Science and Technology, East China Normal Univer- sity, {2. 2.0062. China 4. {2. Cardiovascular Institute, Zhongshan Hospital, shanghai 2.003., China 1. Department of Physics East China Normal University 200062 Shanghai China 2. Ion Beam Lab Shanghai Institute of Mini-system and information Chinese Academy of Sciences 200050 Shanghai China 3. Department of Electronics School of Information Science and Technology East China Normal University 200062 Shanghai China 4. shanghai Cardiovascular Institute Zhongshan Hospital 200032 Shanghai China

Heart valve diseases threaten human health. One reliable way to save lives of such patients is to replace the pathologically changed heart valves by artificial ones. Over 2.million patients have received LTI-carbon heart valve’s implantation. However, the thrombosis after the implantation is one of the difficulties that need to be solved. In order to improve the blood compatibility and security of mechanical heart valves, ion beam technology was used to modify the surface properties of the materials. The investigation results have been summarized in this paper.

关键词： artificial heart valve, ion implantation, plasma immersed ion implantation, ion beam enhanced deposition.

chinese Guidelines for the Diagnosis and Management of Atrial Fibrillation

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Journal of Geriatric Cardiology 2024年第3期21卷 251-314页

作者： Chang-Sheng MA Shu-Lin WU Shao-Wen LIU Ya-Ling HAN chinese Society of Cardiology chinese Medical Association Heart Rhythm Committee of chinese Society of Biomedical Engineering Beijing Anzhen Hospital Capital Medical University Guandong Provincial People’s Hospital shanghai First People’s Hospital General Hospital of Northern Theater Command 不详

Atrial fibrillation(AF)is the most common sustained cardiac arrhythmia,significantly impacting patients’quality of life and increasing the risk of death,stroke,heart failure,and *** the past two decades,there have been significant breakthroughs in AF risk prediction and screening,stroke prevention,rhythm control,catheter ablation,and integrated *** this period,the scale,quality,and experience of AF management in China have greatly improved,providing a solid foundation for the development of guidelines for the diagnosis and management of *** further promote standardized AF management,and apply new technologies and concepts to clinical practice in a timely and comprehensive manner,the chinese Society of Cardiology of the chinese Medical Association and the Heart Rhythm Committee of the chinese Society of Biomedical Engineering have jointly developed the chinese Guidelines for the Diagnosis and Management of Atrial *** guidelines have comprehensively elaborated on various aspects of AF management and proposed the CHA{4.S{4.VASc-60 stroke risk score based on the characteristics of AF in the Asian *** guidelines have also reevaluated the clinical application of AF screening,emphasized the significance of early rhythm control,and highlighted the central role of catheter ablation in rhythm control.

关键词： prevention sustained diagnosis