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Relationship among Photosys-tem Ⅱ carbonic anhydrase,extrinsic polypeptides and manganese cluster

Chinese Science Bulletin 2001年第5期46卷 406-409页

作者： DAI Xinbin YU Yong ZHANG Rongxian YU Xinjian HE Peiming XU Chunhe Nanjing Agricultural University Agronomy DepartmentNanjing 210095China Shanghai Institute of Plant Physiology Chinese Academy of SciencesShanghai 200032China

Effects of Photosystem Ⅱ (PS Ⅱ) extrinsic polypeptides of oxygen-evolving complex and manganese cluster. on PS Ⅱ carbonic anhydrase (CA) were studied with spinach PS Ⅱ membranes. The result supported that membrane-bound CA is located in the donor side of PS Ⅱ. The extrinsic polypeptides played an important role of maintaining CA activity. After removing manganese cluster., oxygen evolution activity was inhibited, but PSⅡ-CA activity was unchanged. It was concluded that CA activity is independent of the presence of manganese cluster., and was not directly correlated with oxygen evolution activity.

关键词： carbonic anhydrase PS II oxygen evolution complex extrinsic polypeptide manganese cluster.

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NITROSYL COMPLEXES——SYNTHESIS, CHARACTERIZATION AND CRYSTAL STRUCTURES OF (η~5-C_5_H_5)M(CO)_2NO AND (η~5-C_5H_5)M(μ_3-NH)(μ_2-NO)(μ_2-CO)Fe_2(CO)_6(M=Mo OR W)

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Science China Chemistry 1991年第11期34卷 1304-1311页

作者：杨世琰孙文华殷元骐郁开北周忠远 Lanzhou Institute of Chemical Physics Academia Sinica Lanzhou 730000 China Chengdu Center of Analysis and Test Academia Sinica Chengdu 610015 China

Treatment of tricarbonyl cyclopentadienyl metal (molybdenum or tungsten) chloride with equal molar amounts of tricarbonyl nitrosyl iron sodium at room temperature yielded the following complexes: orange (η5-C5H5)M(CO)2NO, violet [(η5-C5H5)M(CO)3]2 and black (η5-C5H5)M(μ3-NH)(μ2-NO)(μ2-CO)Fe2(CO)6. These were separated and purified by column chromatography. The last black complexes have a new cluster.type structure with a face-bridging imido(μ3-NH) ligand which was obtained by reducing the nitrosyl (NO) group. In this paper, synthesis and characterization of the title complexes are reported along with their crystal structures which are of two types.

关键词： nitroayl complex carbonyl complex molybdenum-iron mixed metal cluster tungsten-iron mixed cluster.

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cluster.of Solutes With Spherical Distortion in Elastic Stress Field of Component Crack

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Chinese Science Bulletin 1994年第9期39卷 720-724页

作者：于志伟关德林许晓磊马永庆 Institute of Metal Materials Dalian Maritime University Dalian 116024 PRC

Because of being tempted by the crack stress field, hydrogen atoms entering theinterval gap of material can cluster.near the crack tip, forming hydrogen *** Qiwei and Hirth have proposed a physical model of hydrogen atomscluster.ng around the I-type crack tip on the basis of the elastic interaction of thelinear elastic stress field of the crack and hydrogen atoms. Huang Xianya and WuShiding measured the peak rich in hydrogen in front of the I-type crack by theion probe. Yet, the theory that the solutes cluster.around the component crack tiphas not been reported.

关键词： component crack solutes with spherical distortion cluster.

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cluster.observations of magnetic field disturbances caused by FACs in the mid-altitude cusps

Cluster observations of magnetic field disturbances caused b...

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第十一届全国日地空间物理学术讨论会

作者： Q.-H. Zhang,R.-Y Liu J.-Y Huang,Y-H. Liu, Z.-H. Xu (Polar Research Institute of China, Shanghai, China 200136) (School of Science, Xidian University, Xi''an 710071)

＜正＞Data from the four cluster.spacecraft during the mid-altitude cusp crossings on 10 September 2002 are presented. The encounters occur under conditions of weak and steady southward Interplanetary Magnetic Field （IMF）. The data show that there are the field-aligned currents （FACs） in the cusp causing large magnetic field disturbances. The boundary structures of the cusps are characterized by the FACs interfaces. A method for calculating the velocities of the interface based on multi-point measurements of spacecraft are introduced. Results show that the interfaces are roughly parallel to magnetic field lines, and their velocities are almost dawnward. The velocities have small values with respect to satellite’s velocity in the cusp crossings.

关键词： cusp IMF FACs boundary structure cluster.

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Wuhan metro traffic to extend to Hong'an

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Changjiang Weekly 2022年第2期 3-3页

作者： Nie Aolin 不详

The Hong'an County People's Government signed a framework protocol with Wuhan Metro Group on Jan.5 to extend Wuhan's metro traffic to Hong'an in Huanggang city,accelerating the integration of the county into Wuhan's 1-hour economic *** Wuhan-Hong'an intercity metro project preliminarily plans to connect with Wuhan Metro lines 7 and 14 as well as the Qianchuan *** phase I planning will be designed and implemented to synchronize with that of Line 14,with the two lines to dock at the Changjiang New District High-speed Railway Station.

关键词： Wuhan cluster. traffic

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