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Research 2019年第1期2019卷 612-623页

作者： Dong-Li Meng Chun-Hui Chen jun-Dong Yi Qiao Wu jun Liang Yuan-Biao Huang Rong Cao State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China University of the Chinese Academy of Sciences Beijing 100049China

It is highly desired but challenging to achieve highly active single-atom Fe sites from iron-based metal-organic frameworks(MOFs)for efcient oxygen reduction reaction(ORR)due to the easy aggregation of iron species and formation of the inactive Fe-based particles during ***,a facile migration-prevention strategy is developed involving the incorporation of polyaniline(PANI)into the pores of iron porphyrinic-based MOF PCN-224(Fe)and followed by pyrolysis to obtain the single-atom Fe implanted N-doped porous carbons material PANI@PCN-224(Fe)-*** introduced PANI inside the pores of PCN-224(Fe)not only served as protective fences to prevent the aggregation of the iron species during thermal annealing,but also acted as nitrogen sources to increase the nitrogen content and form Fe-Nx-C active *** with the pristine PCN-224(Fe)derived carbonization sample containing Fe-based particles,the carbonaceous material PANI@PCN-224(Fe)-900 without inactive Fe-based particles exhibited superb ORR electrocatalytic activity with a more positive half-wave potential,signifcantly improved stability in both alkaline media,and more challenging acidic *** migration-prevention strategy provides a new way to fabricate atomically dispersed metal active sites via pyrolysis approach for promoting catalysis.

关键词： prevention pyrolysis Oxygen

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中美公共危机管理体制的异同及其启示

重庆三峡学院学报 2011年第6期27卷 128-131页

作者：蔡峻林福州经济技术开发区发展和改革局福建福州350015

中国是一个发展中国家,正处于社会转型和经济转轨期。近些年来,"非典"事件、汶川大地震、2008年大雪灾、"瓮安"事件等重大公共危机事件造成很大的经济损失和一定程度上社会秩序的混乱。现实迫使我国进入了一个危机管理的时代。美国开展... 详细信息

中国是一个发展中国家,正处于社会转型和经济转轨期。近些年来,"非典"事件、汶川大地震、2008年大雪灾、"瓮安"事件等重大公共危机事件造成很大的经济损失和一定程度上社会秩序的混乱。现实迫使我国进入了一个危机管理的时代。美国开展公共危机管理的理论研究比较早,在较为丰富和先进的理论指导下,美国在危机管理实践中也走在世界各国的前列,国家危机管理制度较为健全,对我国有着很好的借鉴意义。

关键词：美国公共危机管理差异启示

Soil Quality Degradation in a Magnesite Mining Area

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Pedosphere 2011年第1期21卷 98-106页

作者： FU Sha-Sha LI Pei-jun FENG Qian LI Xiao-jun LI Peng SUN Yue-Bing CHEN Yang Institute of Applied Ecology Chinese Academy of Sciences Shenyang 110016 (China) Graduate University of the Chinese Academy of Sciences Beijing 100049 (China) Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 (China) Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 (China)

Fourteen soil properties in 17 sampling sites were analyzed to study the soil degradation in a magnesite mining area in Halcheng City, Northeast China. Such areas have hitherto received little attention. The current practices of magnesite mining in this area resulted in degradation of soil quality and specifically led to an increase in soil pH, the ratio of magnesium to calcium, bulk density, clay dispersibility, total magnesium and equivalent calcium carbonate and a decrease in surface soil porosity and available phosphorous. The soil quality in the areas affected by intensive mining activity was obviously worse than that of areas far away from the mine. Four factors were identified and ＂magnesium factor＂, ＂pH factor＂ and ＂fertility factor＂, involving 13 soil properties, explained 82~0 of the total variance in the entire data set. Discriminant analysis showed that the total magnesium, water-soluble calcium and available phosphorous were the most sensitive indicators for soil quality.

关键词： discriminant analysis factor analysis magnesite processing soil degradation

Improvement of the Selectivity for Hydrogen Peroxide Production via the Synergy of TiO2 and Graphene

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Chinese Journal of Structural Chemistry 2022年第3期41卷 85-91,I0009页

作者： SUN Yun-Long HUANG jun-Heng CAS Key Laboratory of Design and Assembly of Functional Nano-structures Fujian Provincial Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China fuzhou University Fuzhou 350108China

To replace the four-electron transferred pathway of oxygen reduction reaction(ORR)by two-electron transferred pathway of ORR(2e-ORR)is desirable for the production of hydrogen peroxide with *** development of electrocatalysts with high selectivity toward 2e-ORR is of great interest but it is still a ***,we synthesized the graphene-supported titanium dioxide nanocomposite as the 2e-ORR catalysts by a combinative process of hydrothermal methods and *** to the synergistic effect between the graphene with high conductivity and the titanium dioxide with defect sites,the composite TiO_(2)/graphene exhibits the improved selectivity(up to 90%)for oxygen converting into hydrogen peroxide.

关键词： oxygen reduction reaction hydrogen peroxide titanium dioxide graphene electrochemistry

Rhodium（lll）/Amine Synergistically Catalyzed Enantioselective Alkylation of Aldehydes with α,β-Unsaturated 2-Acyl Imidazoles

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Chinese Journal of Chemistry 2016年第12期34卷 1225-1235页

作者： jun Gong Kuan Li Saira Qurban Qiang Kang Key Laboratory of Coal to Ethylene Glycol and Its Related Technology Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 China Department of Chemistry Fuzhou University Fuzhou Fujian 350108 China

A synergistic catalysis combination of chiral-at-metal rhodium complex and amine catalyst was developed for enantioselective alkylation of aldehydes with α,β-unsaturated 2-acyl imidazoles. The corresponding adducts ... 详细信息

关键词： alkylation of aldehyde chiral-at-metal complex synergistic catalysis

Structural Fundamentals of Enhanced Catalytic Performance of Nanomaterials

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Structural Fundamentals of Enhanced Catalytic Performance of...

Energy-information trade-off induces continuous and discontinuous phase transitions in lateral predictive coding

中国化学会第六届全国结构化学学术会议

作者： Guang-She Li.Hai-Feng Lin,jun Zhang,and Xin-Shong Huang Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,fuzhou 350002

Here,we will briefly summarize the latest progress of our group in studying the nanostructures pertinent to the enhancement of catalytic *** primary new results can be summarized as follows: (1) Inert material,brookite-TiO was prepared to show several specific faces exposed,which has led to a surprisingly high photocatalytic activity.

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Science China(Physics,Mechanics & Astronomy) 2024年第6期67卷 79-85页

作者： Zhen-Ye Huang Ruyi Zhou Miao Huang Hai-jun Zhou Key Laboratory for Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China School of Optics and Photonics Beijing Institute of TechnologyBeijing 100081China Minjiang Collaborative Center for Theoretical Physics Minjiang UniversityFuzhou 350108China

Lateral predictive coding is a recurrent neural network that creates energy-efficient internal representations by exploiting statistical regularity in sensory ***,we analytically investigate the trade-off between information robustness and energy in a linear model of lateral predictive coding and numerically minimize a free energy *** observed several phase transitions in the synaptic weight matrix,particularly a continuous transition that breaks reciprocity and permutation symmetry and builds cyclic dominance and a discontinuous transition with the associated sudden emergence of tight balance between excitatory and inhibitory *** optimal network follows an ideal gas law over an extended temperature range and saturates the efficiency upper bound of energy *** results provide theoretical insights into the emergence and evolution of complex internal models in predictive processing systems.

关键词： predictive coding recurrent neural network phase transition internal model free energy

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化学聚合法制备电容器用聚吡咯

四川大学学报（自然科学版） 2005年第S1期42卷 271-274页

作者：程贤甦林音林俊鸿潘德源福州大学材料科学与工程学院福建国光新型电子元件与材料技术研究院福州350015

采用化学聚合法制备电容器用聚吡咯,研究了不同的氧化剂和掺杂剂对PPY电导率的影响,并利用TGA,DSC,FT-IR等分析手段,对聚吡咯的热老化性质进行研究,结果表明聚吡咯在有氧条件下热老化比无氧时快很多.

关键词：吡咯化学聚合聚吡咯导电性

Synthesis of metal-organic coordination polymers based on the bipyridinium ligand

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Synthesis of metal-organic coordination polymers based on th...

The 1×4 Optical Splitters Based on Silicon Photonic Crystal Self-Collimation Ring Resonators

中国化学会第六届全国结构化学学术会议

作者： Xue-jun Zhou,Jie Zhang~* State Key Laboratory of Structural Chemistry,Fujian Institute of Research on the Structure of Matter,CAS,fuzhou,Fujian 350002,P.R.China.

＜正＞Helices,the foundation of the genetic code,are of intense interest because living organisms utilize them to store and transmit genetic information as protein bundles and *** the other hand,the helical compounds have broad applications in chiral recognition,asymmetric synthesis,optical devices,and so on. These remarkable features of helices have prompted chemist to explore the rational design and construction

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Chinese Physics Letters 2012年第12期29卷 74-77页

作者： ZHUANG Dong-Xia CHEN Xi-Yao LI jun-jun QIANG Ze-Xuan JIANG jun-Zhen CHEN Zhi-Yong QIU Yi-Shen LI Hui School of Physics and Optoelectronics Technology Fujian Normal UniversityFuzhou 350007 Department of Physics and Electronic Information Engineering Minjiang UniversityFuzhou 350108

We report 1×4 optical splitters(OSs)with different splitting ratios based on either rod-type or hole-type silicon photonic crystal self-collimation ring resonators(SCRRs).The four beam splitters of the OSs are formed by changing the radii of silicon rods or air *** light beam propagating along the SCRR can be controlled by the self-collimation *** transmission spectra at the through and drop ports are investigated by using the finite-difference time-domain(FDTD)*** simulated results agree well with the theoretical *** 1550-nm dropping wavelength,the free spectral ranges for rod-type and hole-type configurations are 28.8 nm and 32.5 nm,respectively,which almost cover the whole optical communication C-band *** dimensions of these structures are only about 10μm×10μm.

关键词： optical effect. Crystal