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病原感染条件下中国对虾二倍体和三倍体血液学变化

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水产学报 2004年第5期28卷 535-540页

作者：张成松李富花于奎杰吴长功郭振宇相建海中国科学院海洋研究所中国科学院海洋研究所山东青岛　2.6071中国科学院研究生院北京　100039 山东青岛　2.6071

以热休克诱导获得中国对虾三倍体,通过口服或注射的方式对二倍体和三倍体中国对虾进行了白斑综合征病毒(WSSV)和鳗弧菌感染实验,研究了病原感染前后二倍体和三倍体中国对虾血液学的变化并首次报道了三倍体中国对虾血细胞的组成。实验结... 详细信息

以热休克诱导获得中国对虾三倍体,通过口服或注射的方式对二倍体和三倍体中国对虾进行了白斑综合征病毒(WSSV)和鳗弧菌感染实验,研究了病原感染前后二倍体和三倍体中国对虾血液学的变化并首次报道了三倍体中国对虾血细胞的组成。实验结果表明:三倍体和二倍体中国对虾均对WSSV敏感,三倍体未显示出明显的抗性。WSSV感染4d后,对虾外周循环系统的血细胞数量明显减少,三倍体和二倍体对虾血细胞数量均降为对照组的10%左右。对虾血细胞组成发生变化,大颗粒细胞明显减少,小颗粒细胞相应增加,而透明细胞所占比例基本不变;大颗粒细胞和小颗粒细胞内颗粒物质均有所减少,出现空泡或细胞外突起等异常结构。注射鳗弧菌感染后两种对虾的血细胞数量均有所减少,血细胞数量的减少与弧菌的注射量呈正相关关系。三倍体中国对虾血细胞组成与二倍体相似,但其密度仅为二倍体的40%左右。本研究结果为三倍体对虾抗逆特性的研究提供了一定依据和参考。

关键词：中国对虾三倍体白斑综合征病毒鳗弧菌人工感染血液学

Synthesis and Electrochemical properties of Phospho-olivine Type LiFe_xM_((1-x)) PO4 (1≥x≥0) Compounds

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合成化学 2004年第Z1期12卷 146-146页

作者： SUN Yu-heng?1, , LIU Xing-quan1, 2.2.1. Research and Development Center for Functional Materials, Chengdu Institute of Organic Chemistry, chinese academy of {2., Chengdu 610041, china 2. graduate school of the chinese academy of sciences, beijing 100039, china Research and Development Center for Functional Materials Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 China graduate school of the {2. academy of sciences Beijing 100039 China

Olivine-type LiFePO4 appears to be the best candidate for large size Lithium ion batteries compared with conventional cathode materials such as LiCoO2. LiNiO2.and LiMnO4 based on cost,environmental benign and safety. In addition, LiFePO4 has a large theoretical capacity of 170 mAhg-1, good cycle stability, and a flat discharge potential of 3.4V versus Li/Li+. However, its low ionic/electronic conductivity limits the electrochemical prosperities of this material, especially its rate capability. Many efforts have been devoted to increase and optimize the conductivity of LiFePO4 besides minimizing the particle size and making an intimate carbon coating around the particles, though it is not the way to change intrinsically the electrical conductivity of *** this research, LiFePO4 was synthesized by solid-state reaction. A discharge capacity of around 110mAhg-1 was achieved under a low current density of 17mAg-1 at room temperature. In order to compounds were prepared, respectively. As an example, LiFe0.9Ti0.1PO4 had the same XRD pattern as LiFePO4 but more developed crystalline intensity. The charge-discharge capacities of LiFe0.9Ti 0.1PO4 at the first cycle were 134mAhg-1 and 12. mAhg-1, respectively. The efficiency of charge-discharge was larger than 96%. A reversible capacity of 110 mAhg-1 was obtained after 2.cycles and the capacity retention was over 85%. Moreover, the discharge voltage flat was maintained at 3.4V verse Li/Li+ after the first cycle. At even higher rates, it also exhibited good electrochemical performances.

关键词： Phospho-olivine type compounds, Electrochemical properties, Lithium ion batteries,Cathode material

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浅层混源天然气判识的碳同位素地球化学分析

天然气地球科学 2003年第6期14卷 469-473页

作者：王万春刘文汇刘全有中国科学院兰州地质研究所

由于生物化学作用、热降解作用和构造活动等的共同影响,不同成因天然气易在含油气盆地浅层聚集在同一气藏内形成浅层混源天然气藏。论述了浅层原生天然气(生物成因气和低温热成因气)及浅层次生天然气(次生运移天然气和微生物改造天然气... 详细信息

由于生物化学作用、热降解作用和构造活动等的共同影响,不同成因天然气易在含油气盆地浅层聚集在同一气藏内形成浅层混源天然气藏。论述了浅层原生天然气(生物成因气和低温热成因气)及浅层次生天然气(次生运移天然气和微生物改造天然气)的组分组成及碳同位素组成的分布特征,讨论了影响浅层混源天然气碳同位素组成的主要因素,分析了浅层混源天然气判识的地球化学指标。

关键词：混源天然气碳同位素地球化学

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含锆ZSM-5分子筛上丙烯齐聚反应的研究

燃料化学学报 2004年第4期32卷 498-503页

作者：李晓波胡津仙王锋任杰李永旺孙予罕中国科学院山西煤炭化学研究所煤转化国家重点实验室

以正丁胺(NBA)为模板剂,通过水热法直接合成了Zr/ZSM 5分子筛。XRD分析表明Zr/ZSM 5分子筛结晶度良好,但衍射峰的强度稍有差别。SEM显示样品分子筛表面规整,为3μm～5μm的棒状晶体。采用NH3 TPD法对分子筛进行了酸性测试,结果表明,在... 详细信息

以正丁胺(NBA)为模板剂,通过水热法直接合成了Zr/ZSM 5分子筛。XRD分析表明Zr/ZSM 5分子筛结晶度良好,但衍射峰的强度稍有差别。SEM显示样品分子筛表面规整,为3μm～5μm的棒状晶体。采用NH3 TPD法对分子筛进行了酸性测试,结果表明,在锆质量分数0.2.～1.2.,分子筛的中强酸和强酸量随锆质量分数的增加而增大,并向高温方向偏移。丙烯齐聚催化反应的活性评价结果显示,中强酸和强酸的量对Zr/HZSM 5催化性能有显著影响,在反应过程中对链的增长起促进作用。

关键词：水热法锆ZSM-5分子筛齐聚

Effects of cosmological constant on motion of UHECR particles

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Science china(Physics,Mechanics & Astronomy) 2005年第1期48卷 44-56页

作者： CHEN Shaoxia & CHANG Zhe Institute of High Energy Physics, chinese academy of {2., beijing 100039, china graduate school of chinese academy of {2., beijing 100039, china Institute of High Energy Physics Chinese Academy of Sciences Beijing 100039 China graduate school Chinese Academy of Sciences Beijing 100039 China

Recent astronomical observations manifest that about two-thirds of the whole energy in the Universe is contributed by a small positive cosmological constant A (> 0). Then, an asymptotically de Sitter spacetime is premised naturally. However, physics in the de Sitter spacetime is very different from that in the Minkowski spacetime. As the first step, a covariant formalism of the kinematics in the de Sitter spacetime is presented here. By solving exactly the equations of motion for a field, we obtain the dispersion relation of a free particle. It is noticed that the dispersion relation is dependent on the degree of freedom of angular momentum of the particle. We show the threshold anomaly of the ultra high energy cosmic ray disappears naturally in the framework of the de Sitter kinematics.

关键词： ultrahigh energy cosmic ray, cosmological constant, curved spacetime.

The deep thermal characteristic of continental margin of the northern South china Sea

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chinese Science Bulletin 2000年第18期45卷 1717-1722页

作者： ZHANG Jian & WANG Jiyang1. graduate school, University of Science and Technology of{2., chinese academy of sciences, beijing 100039,{2. 2. Institute of Geology, chinese academy of sciences, beijing 10002.,{2. graduate school University of Science and Technology of China Chinese Academy of Sciences Beijing China Institute of Geology Chinese Academy of Sciences Beijing China

Heat flow plays an important role in the study ot thermal structure and thermal evolutionof continental margin of the northern South china Sea. The analysis of heat flow value shows that margin heat flow in the northern South china Sea is relatively high setting, but the percentage of crustal heat flow is lower than 35% in terrestrial heat flow. The terrestrial heat flow exhibited a current of rise from the Northern Continental Margin to the Southern Central Basin. However, the proportion of crustal heat flow in terrestrial heat flow slowly dropped down in the same direction. It is suggested that the main factor causing high heat flow setting is the moving up of hot material from asthenosphere.

关键词： margin of northern South china Sea terrestrial heat flow thermal structures.

Recent advances in the data analysis method of functional magnetic resonance imaging and its applications in neuroimaging

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Progress in Natural Science:Materials International 2006年第8期16卷 785-795页

作者： TIAN Jie, YANG Lei and HU Jin (Institute of Automation, chinese academy of {2., beijing 100080, china graduate school of chinese academy of {2., beijing 100039, china) Institute of Automation Chinese Academy of Sciences Beijing 100080 China graduate school of {2. academy of sciences Beijing 100039 China

Functional magnetic resonance imaging (fMRI) has opened a new area to explore the human brain. The fMRI can reveal the deep insights of spatial and temporal changes underlying a broad range of brain function, such as motor, vision, memory and emotion, all of which are helpful in the clinical investigation. In this paper, we introduce some recent-developed algorithms for fMRI signal detection such as model-driven method (general linear model, deconvolution model, non-linear model, etc. ) and data-driven method (principle component analysis, independent component analysis, self-organization mapping, clustered constrained non-negative matrix factorization, etc. ). We also propose several important applications of neuroimaging and point out their shortcomings and future perspectives.

关键词： fMR1 data analysis neuroimaging.

A novel operation mode for spaceborne polarimetric SAR

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Science china(Information sciences) 2011年第4期54卷 884-897页

作者： QI WeiKong 1,2.& YU WeiDong 1 1 Institute of Electronics,chinese academy of {2.,beijing 100190,china 2.graduate school of chinese academy of {2.,beijing 100039,china Institute of Electronics Chinese Academy of Sciences Beijing China graduate school of {2. academy of sciences Beijing China

A novel operation mode for spaceborne polarimetric SAR,named polarization space-division adding polarization code-division (PSD-PCD) operation mode,is proposed in this paper through combining polarimetric SAR with elevation digital beam-forming (DBF) on *** a pulse repetition interval the up-chirp LFM sub-pulse is transmitted with horizontal polarization antenna,and with some delay the down-chip LFM subpulse is transmitted with vertical polarization antenna to realize code *** every sub-aperture receives returns from ground,SAR system uses range DBF to separate echoes relative to different sub-pulses in order to realize space *** system PRF is equal to that of single-polarization SAR,and elevation DBF help reduce range ambiguity ***,the main system parameters,including PRF,delay between two sub-pulses,radar equation and ambiguity are analyzed and compared with those of single-polarization *** results demonstrate the feasibility and validity of PSD-PCD operation mode.

关键词： spaceborne synthetic aperture radar (SAR) polarimetry digital beamforming (DBF) operation mode ambiguity ratio polarization space-division polarization code-division

Reconstruction of temperature series in china for the last 5000 years

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Progress in Natural Science:Materials International 2006年第8期16卷 838-845页

作者： GE Quansheng, WANG Shunbing and ZHENG Jingyun (Institute of Geographical sciences and Natural Resources Research, chinese {2. of sciences, beijing 100101, china graduate school of the chinese {2. of sciences, beijing 100039, china) Institute of Geographical sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China graduate school of the {2. academy of sciences Beijing 100039 China

A temperature series with a 100 year resolution for the last 5000 years in china has been reconstructed by using 31 longterm temperature proxy series selected from recent publications in the last 2. years. The proxy records include pollens, stalagmites, lake-sediments, peat, ice cores and historical documents. The result reveals that in the millennial scale temperature variation it was warm in 3050-2.0 BC and it was cold in 2.0 BC-1950 AD. In the above two periods there were many stages of sub-scale temperature fluctuations. The result also shows an obvious temperature discrepancy on the century to multi-century scale between the Eastern Monsoon Region, the Qinghai-Tibet Region and the Northwestern Region in 2.50 BC, 2.50 BC, 1350 BC, 950-350 BC, 50-2.0 AD, and 550 AD. A comparison between the reconstructed series of this paper and some North Hemisphere temperature series indicates that in the longterm scale change, the temperature change in china is in phrase with that of the Northern Hemisphere during the last 5000 years, while on the century to multi-century scale there are differences at the beginning and end times, which may imply that temperature change does not occur simultaneously in different regions.

关键词： temperature series the last 5000 years china.