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Chinese Journal of Structural Chemistry 2006年第9期25卷 1071-1077页

作者： WEI chun-Xia CHEN Jian-Xin ZHANG Zhi-chun LANTing-Yan HUANG Yuan-Biao LI Zhong-shui ZHANG Wen-Jie College of Chemistry and Materials Science Fujian Normal University Fuzhou 350007 China

A new molybdenum phosphate [Zn（Mo^v6P4O31H10）2（C4H144N3）2].2C4H13N3.8H2O 1 （C4H13N3 = diethylenetriamine） has been synthesized under hydrothermal condition. Single-crystal X-ray diffraction reveals that compound 1 crystallizes in the monoclinic, space group P21/n, a = 13.1679（3）, b = 22.1240（6）, c = 13.6146（3） A, β= 103.4847（7）°, V = 3856.95（16） A^3, C16H90N12O70P8ZnMo12, Mr = 3035.41, Z = 2, Dc = 2.614 g/cm^3, μ = 2.483 mm^-1, F（000） = 2968, S = 1.014, the final R = 0.0196 and wR = 0.0506 for 7486 observed reflections （1 〉 2σ（I））. Compound 1 consists of two identical rings of six edge-sharing MoOt, octahedra interconnected by one ZnO6 octahedron, whereas the PO4 tetrahedra which share their apices with the MoO6, octahedra are only located on one side of each Mo6, ring. The 2-charge of polyanion [Zn（Mo^v6P4O31H10）2]^2- unit is compensated in the crystal by two mono-protonated diethylenetriamines （C4H14N3）^＋. By hydrogen bonding interactions the polyanion of compound 1 is interconnected to form pseudo threedimensional molybdophosphate. Other characterizations by elemental analyses, IR spectrum and fluorescent spectrum are also described.

关键词： molybdenum(V) phosphate hydrothermal synthesis crystal structure fluorescent property

Ultrahigh performance concrete–properties, applications and perspectives

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Science China(Technological Sciences) 2015年第4期58卷 587-599页

作者： GU chun Ping YE Guang sun Wei School of Materials Science & Engineering Southeast University Microlab Faculty of Civil Engineering and Geosciences Delft University of Technology Jiangsu Key Laboratory of Construction Materials Collaborative Innovation Center for Advanced Civil Engineering Materials

Over the last twenty years,remarkable advances have taken place in the research and application of ultra-high performance concrete(UHPC),which exhibits outstanding mechanical properties and excellent *** has shown great potential for the next generation infrastructure construction from the sustainability point of *** paper will give an overview on UHPC,with particular focus on the properties,applications and *** several decades of development,several types of commercial UHPC materials are available in the market,and the properties of UHPC have been characterized by numerous experimental and field *** speaking,the performance(*** properties and durability)of UHPC is much better than normal concrete(NC)and high performance concrete(HPC).Therefore,the uses of UHPC are growing all over the world,in both fields of new construction and ***,it is still a special material and technology,which is not worldwide *** some application prospects of UHPC are briefly introduced in the paper,and the efforts,which have to be made to turn UHPC into a widespread‘regular’technology,are *** paper aims to help designers,engineers,architects and infrastructure owners to know the capacities of UHPC and thus to increase the applications of this material.

关键词： UHPC characteristics durability applications perspectives

Theoretical Study of Decomposition Pathways for Rare-gas-containing Compounds HRgX (Rg = He, Ne, Ar, Kr; X = Cl, Br)

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Chinese Journal of Structural Chemistry 2005年第12期24卷 1445-1451页

作者： AI chun-Zhi sun Ren-An YAN Jie College of Chemistry and Chemical Engineering Liaoning normal university Dalian 116029 China

Eight species, HRgX （Rg = He, Ne, Ar, Kr; X = Cl, Br）, are predicted to have bending transition states at B3PW91/AUG-cc-PVTZ level, leading to 2-body decomposition pathway like H-Rg-X→Rg＋HX. The reaction path has been obtained with Intricate Reaction Coordinates （IRC） method on identical theoretical level. Additionally, the linear transition states of HArCl, HArBr, HKrCl and HKrBr were obtained at MP2/6-311 ＋＋G （2d, 2p） level, resulting in 3-body dissociation channel as H-Rg-X→H ＋ Rg＋ X.

关键词： decomposition pathway transition state IRC energy barrier

Navigating the safe operation of high-voltage cathodes:Challenges and strategies

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Nano Research 2024年第10期17卷 8694-8705页

作者： Yue sun Changjian Zuo Yi-chun Lu Electrochemical Energy and Interfaces Laboratory Department of Mechanical and Automation EngineeringThe Chinese University of Hong KongHong Kong 999077China

Lithium-ion batteries play a crucial role in storing energy for renewable sources and electric vehicles,yet face challenges related to insufficient energy *** the working-voltage of cathodes is promising to boost the energy density of batteries by increasing both the output voltage and capacity of cathode,which however could compromise life cycle and *** review provides a comprehensive summary of essential factors governing pathways of cathode-induced thermal runaway,including electrolyte decomposition,phase transitions,and crosstalk-induced *** and electrolyte modifications aimed at mitigating parasitic reactions and preventing crosstalk were also *** review concludes with insights into the future application of these strategies,providing a comprehensive perspective on the realization of high-energy and safe batteries.

关键词： battery safety high-voltage cathode lithium-ion battery thermal runaway

Disaccharide phosphorylases: Structure, catalytic mechanisms and directed evolution

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Synthetic and Systems Biotechnology 2021年第1期6卷 23-31页

作者： Shangshang sun chun You Tianjin Institute of Industrial Biotechnology Chinese Academy of Sciences32 West 7th AvenueTianjin Airport Economic AreaTianjin300308People’s Republic of China University of Chinese Academy of Sciences 19A Yuquan RoadShijingshan DistrictBeijing100049People’s Republic of China National Technology Innovation Center of Synthetic Biology Tianjin300308People’s Republic of China

Disaccharide phosphorylases(DSPs)are carbohydrate-active enzymes with outstanding potential for the biocatalytic conversion of common table sugar into products with attractive *** are modular enzymes that form active *** a mechanistic as well as a structural point of view,they are similar to glycoside hydrolases or *** the majority of DSPs show strict stereo-and regiospecificities,these enzymes were used to synthesize specific ***,protein engineering of DSPs is pursued in different laboratories to broaden the donor and acceptor substrate specificities or improve the industrial particularity of naturally existing enzymes,to eventually generate a toolbox of new catalysts for glycoside *** we review the characteristics and classifications of reported DSPs and the glycoside products that they have been used to synthesize.

关键词： Disaccharide phosphorylase Classification Structure and domains Substrate specificity Enzyme engineering

Semiconductor quantum dot-doped glass as spectral converter for photovoltaic application

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Chinese Science Bulletin 2014年第1期59卷 16-22页

作者： Lu sun chun Jiang State Key Laboratory of Advanced Optical Communication System and Networks Shanghai Jiao Tong University

In this article,we focus on using the multiexciton generation(MEG)effect of quantum dot(QD)to realize quantum cutting of high-energy photons which will give rise to a remarkable increase of total photon *** avoid the complicated solving of Schro¨dinger equation,we take approximations and develop a method for fast evaluating the quantum efficiency of MEG *** this basis,we calculate the detailed balance limit of efficiency of Si single-junction solar cell with Si QD-doped glass placed on top of it as a spectral converter *** shows that the efficiency will reach 36%which is 6%higher than that without the converter *** have also explored the influence of QD radius,QD-doping density,QD,and host material,device working temperature on the efficiency.

关键词：半导体量子点掺杂玻璃转换器光谱应用光伏太阳能电池量子剪裁

Changes of Leaf Morphological, Anatomical Structure and Carbon Isotope Ratio with the Height of the Wangtian Tree (Parashorea chinensis) in Xishuangbanna, China

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Journal of Integrative Plant Biology 2008年第2期50卷 168-173页

作者： chun-Xia He Ji-Yue Li Ping Zhou Ming Guo Quan-shui Zheng Key Laboratory for Silviculture and Conservation Ministry of Education Beijing Forestry University Beijing 100083 China Viikki Tropical Resources Institute University of Helsinki FIN-00014 Helsinki Finland Department of Engineering Mechanics of Tsinghua University Beijing 100084 China

Leaf morphological and anatomical structure and carbon isotope ratio （δ^13C） change with increasing tree height. To determine how tree height affects leaf characteristics, we measured the leaf area, specific leaf mass （ratio of leaf mass to leaf area [LMA]）, thickness of the total leaf, cuticle, epidermis, palisade and sponge mesophyll, stomata traits and δ^13C at different heights of Parashorea chinensis with methods of light and scanning electron microscopy （SEM） and isotope-ratio mass spectrometry. The correlation and stepwise regression between tree height and leaf structure traits were carried out with SPSS software. The results showed that leaf structures and δ^13C differed significantly along the tree height gradient. The leaf area, thickness of sponge mesophyll and size of stomata decreased with increasing height, whereas the thickness of lamina, palisade mesophyll, epidermis, and cuticle, ratios of palisade to spongy thickness, density of stomata and vascular bundles, LMA and δ^13C increased with tree height. Tree height showed a significant relationship with all leaf indices and the most significant relationship was with epidermis thickness, leaf area, cuticle thickness, δ^13C. The δ^13C value showed a significantly positive relationship with LMA （R = 0.934）. Our results supported the hypothesis that the leaf structures exhibited more xeromorphic characteristics with the increasing gradient of tree height.

关键词： δ^13C anatomy morphology Parashorea chinensis ratio of leaf mass to leaf area.

Engineering unique vesicle structured tin phosphides@P/N co-doped carbon anode for high-performance sodium/lithium-ion batteries

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Rare Metals 2022年第5期41卷 1496-1503页

作者： shui-Xin Xia Yu-Hua Yan Hao sun Jun-He Yang Shi-You Zheng School of Materials and Chemistry University of Shanghai for Science and TechnologyShanghai 200093China

Vesicle structured Sn_(4)P_(3)@P/N co-doped carbon nanocomposites(Sn_(4)P_(3)@PNC)were facilely prepared via in situ low temperature synthesis and investigated as anodes for sodium/lithium-ion ***_(4)P_(3)@PNC exhibit... 详细信息

关键词： stability. lithium performance

Biān stone hot compress combined with acupuncture at cervical Jiājǐ acupoint for axial pain after cervical LIF operation: A randomized controlled trial

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World Journal of Acupuncture-Moxibustion 2019年第4期29卷 264-268页

作者： De-sheng Zhang Pei-rong Zhou shui-chun Liu Shao-qiu sun The Second Affiliated Hospital Hunan University of Traditional Chinese MedicineChangsha 410005China Hunan University of Traditional Chinese Medicine Changsha 410208China

Objective:To compare the clinical effect differences of biān(砭)stone hot compress combined with acupuncture at cervical Jiājǐ(夹脊EX-B2)acupoint and simple acupuncture at cervical EX-B2 for axial pain after cervical laminectomy with implant fixation(LIF)***:A total of 80 patients with axial pain after cervical LIF operation were randomly assigned into the biān(砭)stone hot compress combined with acupuncture at cervical EX-B2 group(Group A)and the acupuncture at cervical EX-B2 group(Group B),and 40 patients in each *** group A was treated by biān(砭)stone hot compress and acupuncture at cervical EX-B2,while the group B was treated by acupuncture at cervical *** of groups were treated once a day,one course of treatment consisted of 7 days,6-day treatment plus 1-day rest,and there were 3 courses of treatment in *** pain score(Visual analogue scale,VAS),neck dysfunction indices(NDI),and serum creatine phosphokinase(CPK)levels of patients were compared before and after the treatment,and their clinical effects were ***:The VAS score,NDI,and CPK in patients of the two groups after treatment were all lower than those before treatment(all P<0.05),and the indicators in the group A after treatment were all lower than those in the group B after treatment(all P<0.05).The effective rate in the group A was 92.5%,higher than that(77.5%)in the group B,and there was statistically significant difference(P<0.05).Conclusions:The biān(砭)stone hot compress combined with acupuncture at cervical EX-B2 acupoint was better than acupuncture at cervical EX-B2 alone in treatment of axial pain after cervical LIF *** the group A,therapeutic effects were improved by relieving pain,improving neck function,and repairing muscle injury.

关键词： Axial pain Biān(砭)stone Hot compress Acupuncture Cervical Jiājǐacupoint

Nanosheet-structured K–Co–MoS_2 catalyst for the higher alcohol synthesis from syngas: Synthesis and activation

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Journal of Energy Chemistry 2019年第3期28卷 57-62页

作者： Huan Li Wei Zhang Yinyin Wang Meiling shui Song sun Jun Bao Chen Gao National Synchrotron Radiation Laboratory Collaborative Innovation Center of Chemistry for Energy Materials University of Science and Technology of China CAS Key Laboratory of Materials for Energy Conversion Department of Materials Science and Engineering University of Science and Technology of China

The nanosheets structured K–Co–MoS_2 catalyst was prepared through a one-step hydrothermal synthesis combined with the wetness impregnation. The fresh catalyst has a high dispersion of Co–Mo–S active phase and no Co_9S_8 is found. The pure H_2 activated catalyst shows a higher intrinsic activity, especially the C_(2+) OH selectivity for the higher alcohol synthesis compared to the one activated by 5% H_2/N_2 atmosphere. The reason is attributed to that the pure H_2 activation more effectively suppresses the formation of Co_9S_8 and stabilizes the Co–Mo–S active phase during the reaction due to the formation of SH species.

关键词： Syngas Higher alcohol synthesis Mo-based catalyst Co–Mo–S phase