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Relationships between D1 protein, xanthophyll cycle and photodamage-resistant capacity in rice (Orysa sativa L.)

Chinese Science Bulletin 2000年第17期45卷 1569-1575页

作者： Jl Benhua & jiao demao1. Institute of Agrobiological Genetics and Physiology, Jiangsu Academy of Agricultural Sciences, Nanjing 2.0014, {2. 2. department of biology , nantong Teachers College, nantong 226007, china correspondence should be addressed to jiao demao Institute of Agrobiological Genetics and Physiology Jiangsu Academy of Agricultural Sciences Nanjing China department of biology Nantong Teachers College Nantong China

Relationships between D1 protein, xanthophyll cycle and subspecific difference of photodamage-resistant capacity have been studied in O. japonica rice varieties 02.2. and 02. (photoinhibition-tolerance) and O. indica rice varieties 3037 and Palghar (photoinhibition-sensitivity) and their reciprocal cross F, hybrids after photoinhibitory treatment. It was shown that PS II photochemical efficiency (Fv /Fm) decreased, and xanthophyll cycle from violaxanthin (V), via anaxanthin (A), to zeaxanthin (Z) was enhanced and non-photochemical quenching (g/v) increased accordingly in SM-pretreated leaves of rice when the synthesis of D1 protein was inhibited, and that there was a decrease in qN and, as a result, more loss of D1 protein and a big decrease in Fv/Fm in DTT-pretreated leaves when xanthophyll cycle was inhibited. O. japonica subspecies had a higher maintaining capacity of D1 protein and a decrease of Fv /Fm in a more narrow range, and exhibited more resistance against photodamage, as compared with O.

关键词： D1 protein non-photochemical quenching photoinhibition of photosynthesis rice xanthophyll cycle.

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Approaches to improving critical current density of YBCO superconducting thick films deposited by electrophoresis

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Science china(Physics,Mechanics & Astronomy) 2004年第2期47卷 165-172页

作者： ZHU Yabin1,2. ZHOU Yueliang2. LIU Zhen2. WANG Shufang2. CHEN Zhenghao2. L?Huibin2. YANG Guozhen2. XIAO Ling3, REN Hongtao3, jiao Yulei3 & ZHENG Minghui3 1. department of Physics, College of Science, Beijing jiaotong University, Beijing 100044, china 2. Laboratory of Optical Physics, Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, china 3. General Research Institute for Nonferrous Metals, Beijing 100088, china correspondence should be addressed to Zhu Yabin (email: ybzhu@***) 1. department of Physics College of Science Beijing Jiaotong University 100044 Beijing China 2. Laboratory of Optical Physics Institute of Physics and Center for Condensed Matter Physics Chinese Academy of Sciences 100080 Beijing China 3. General Research Institute for Nonferrous Metals 100088 Beijing China

Fabrication of YBCO superconducting thick films by electrophoresis has been widely reported. However, the value of critical current density (J c) is far from what the practical application requires. The superconducting thick films are obtained using top-seeded melt growth method with different proportional Y2.aCuO5 (Y2.1) addition. High-pressure oxygen has been used in the annealing process to improve the uniformity of the oxygen content in the superconducting thick films. When 40mol% Y2.1 powder is added to the YBa2.u3O7–5 (Y12.) powder,J c for the superconducting thick film by approaches described above reaches 7.008×103 A/cm2.(77 K, 0 T), which is greater than the value ever reported.

关键词： YBCO thick films, electrophoretic deposition, melt-textured.

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Investigation of solvatochromism and aggregation behavior of C_(60)(C_4H_(10)N^+)I^- in binary solvent mixtures

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Chinese Science Bulletin 2003年第18期48卷 1938-1942页

作者： WANG Guanwu1, HAO Erhong1, jiao Lijuan1 & YAN Lifeng2.1. department of Chemistry, University of Science and Technology of{2., Hefei 2.002., {2. 2. department of Chemical Physics, University of Science and Technol-ogy of {2., Hefei 2.002., {2. correspondence should be addressed to Wang Guanwu (e-mail: gwang @***) department of Chemistry University of Science and Technology of China Helei 230026 China

Water-soluble N,N-dimethyl[60]fulleropyrro-lidinium iodide (C60(C4H10N+)I-), when dissolved in binarymixtures of tetrahydrofuran and water, was found to exhibit remarkable solvatochromism. Correspondingly, the UV-vis spectra showed obvious changes by variation of the solventcomposition of tetrahydrofuran and water. It was found that both concentration and temperature had strong influence on the stability of monomer-state C60(C4H10N+)I-, while theyhad little effect on the stability of aggregated C60(C4H10N+) I-The formation of cluster was confirmed by TEM and AFMmeasurements.

关键词： N N-dimethylfulleropyrrolidinium iodide solvato-chromism aggregation.

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