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Design,Synthesis and Recognition Properties of a New Acetate Ion Receptor Based on Shiff-base Derivative

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Chemical Research in Chinese Universities 2011年第4期27卷 574-577页

作者： QIAO yan.hong LIN Hai LIN Hua-kuan Department of Chemistry Tianjin Normal University Tianjin 300387 P. R. China Department of Chemistry Nankai University Tianjin 300071 P. R. China Key Laboratory of Functional Polymer Materials Ministry of Education Nankai University Tianjin 300070 P. R. China

A simple colorimetric acetate ion receptor based on 3-methoxysalicylaldehyde-4＇-nitrophenyl-hydrazone was synthesized in an ethanol solution through one step,and characterized by 1H NMR and elemental *** anion-binding ability was examined by UV-Vis absorption spectroscopy in DMSO（dimethyl sulfoxide）.The result shows that the compound has a high affinity for and a high selectivity toward acetate ions,and also an advantage of ＇naked-eye＇ recognition of color changing from yellow to purple.

关键词： Anion recognition Colorimetric 'Naked-eye' recognition Schiff base

Microstructures and mechanical properties of Cu/Al compound materials during thermal cycle

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Rare Metals 2022年第11期41卷 3911-3918页

作者： Bing Wang Ping Liu Xin-kuan.Liu Zi-yan.Wang yan.yan.Wang Xiao-Hong Chen Xiao-Zhi Liu School of Materials Science and Engineering University of Shanghai for Science and TechnologyShanghai200093China Automobiles Science and Technology(Shanghai)Co. LtdShanghai200433China

Cu/Al compound materials,named as copperclad aluminum bus bars,are widely used in heat dissipation of modern *** thermal cycle tests were conducted at 200,250 and 300℃for different cycle times,*** of thermal cycle temperatures and thermal cycle times on micro structures and mechanical properties of the interface were *** results show that the width of bonding layer and bond strength are significantly affected by thermal cycle temperatures and ***,the variety or the quantity of intermediate compounds is scarcely ***_(2)Cu,Cu_(9) Al_(4)and CuAl were identified on the *** the increase in cycle times,grains of the material grew ***,grains of the interface grew up more apparently than those of Cu and *** knowledge may be applied in the establishment of service condition and quality evaluation of material.

关键词： Copper-clad aluminum bus bars Thermal cycle Interface Bonding Microstructure Intermetallic

Response of nearshore circulation outside yan.tze Estuary to El Nino events

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Water Science and Engineering 2016年第2期9卷 145-154页

作者： Wen-yan.Zhang Zheng Gong Chang-kuan.Zhang Wei Tan State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering Hohai University Nanjing 210098 China CCCC Third Harbor Consultants Co. Ltd. Shanghai 210030 China Jiangsu Key Laboratory of Coast Ocean Resources Development and Environment Security Hohai University Nanjing 210098 China

With consideration of the comprehensive effects of runoff from the yan.tze River, East China Sea background circulation, and tidal currents,a regional circulation model, including the yan.tze Estuary, Hangzhou Bay, and adjacent sea areas was established. The 2002/2003 El Ni^no event was chosen for study of the anomalies of circulation outside the yan.tze Estuary. The coastal and ocean current systems of the East China Sea and the current structure outside the yan.tze Estuary were accurately described. The results of vertical circulation analysis basically coincide with those of horizontal circulation analysis, showing that the circulation outside the yan.tze Estuary is mainly affected by the Taiwan warm current, runoff from the yan.tze Estuary, and the tide-induced residual current. The El Ni^no event weakens yan.tze Estuary circulation to a certain degree, and the impacts are more significant in summer than in winter. During the 2002/2003 El Ni^no event, the flux of the Taiwan warm current decreases, and the northward component of the Taiwan warm current decreases by half in February 2003 compared to the previous year. However, its path is relatively stable.

关键词： El Nino Princeton ocean model yan.tze Estuary Circulation Taiwan warm current

New Inorganic-organic Hybrid Compound Containing One Dimensional Keggin Polyoxometalate [SiW_(11)O_(39)Co]^(6-) Chains: Preparation, Characterization and Application in Chemically Bulk-modified Electrode

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Chemical Research in Chinese Universities 2008年第2期24卷 129-134页

作者： WANG Xiu-li LIN Hong-yan.LIUGuo-cheng CHEN Bao-kuan.BI yan.feng Faculty of Chemistry and Chemical Engineering Bohai University Liaoning Key Laboratry of Applied Chemistry Jinzhou 121000 P. R. China

A new inorganic-organic hybrid compound based on polyoxometalate and organic ligand formulated as （H2bpp）3[SiWlIO39Co]-2H20（1）[bpp=l,3-bis（4-pyridyl）propane] was hydrothermally synthesized and structurally characterized by elemental analysis, single-crystal X-ray diffraction, IR, TG, and cyclic voltammetry. Single-crystal X-ray diffraction analysis reveals that compound 1 consists of interesting cobalt-monosubstituted POMs one dimensional chain together with protonated bpp ligands. Additionally, the polyoxoanions combined with the discrete organic substrates by hydrogen bond interactions to afford a supramolecular 3D network structure. The hybrid compound 1 was used as a bulk modifier to fabricate a three-dimensional chemically modified carbon paste electrode（1-CPE） by direct mixing. The electrochemical behavior and electrocatalysis of 1-CPE were studied in detail. The results indicate that 1-CPE has good electrocatalytic activities toward the reduction of nitrite or bromate in 1 mol/L 1-12SO4 aqueous solution. 1-CPE shows remarkable stability that can be ascribed to the insolubility of compound 1 and the supramolecular interactions existed between 1D POM anion chains and organic ligand bpp, which is very important for practical applications in electrode modification.

关键词： Inorganic-organic hybrid Polyoxometalate Electrochemistry Carbon paste electrode Electrocatalysis

An Overview of Structural Design,Analysis and Common Monitoring Technologies for Floating Platform and Flexible Cable and Riser

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China Ocean Engineering 2022年第4期36卷 511-531页

作者： WU Wen-hua ZHAO yan.GOU Ying LYU Bai-cheng LU Qing-zhen LU Zhao-kuan.yan.Jun Faculty of Vehicle Engineering and Mechanics State Key Laboratory of Structural Analysis of Industrial Equip-mentDalian University of TechnologyDalian 116024China Ningbo Institute of Dalian University of Technology Ningbo 315000China State Key Laboratory of Coastal and Offshore Engineering Dalian University of TechnologyDalian 116024China China National Offshore Oil Corporation(CNOOC)Research Institute Beijing 100027China

Offshore oil and gas development plays an important part in the global energy *** platforms and flexible pipes are the key equipments in the whole offshore oil and gas development *** of the randomness and uncertainty of wave and current loads in the ocean environment,the structural design and mechanical analysis of the marine equipment can be highly ***,this paper reviews the recent works of the theoretical model,numerical simulation,and experimental test in three research areas:hydrodynamic analysis of offshore platforms,structural mechanics analysis of flexible pipe and cable,and monitoring technology of offshore floating structures under marine *** analyzing their main research methods and key technical difficulties,this paper provides theoretical basis and technical support for the reliability engineering application of offshore platforms and flexible ***,China is relatively backward in the design of marine floating platform,the design,analysis and testing of flexible pipeline and cable,as well as the marine equipment prototype monitoring technology *** for breakthroughs at the earliest possible stage in the above fields,prime research should be focused on and strategic planning should be made to deal with“key areas and stranglehold problems”.It is of great significance for the development of China's deep-sea energy and resource development of independent technology and on time to achieve the“carbon peak”national strategic objectives.

关键词： review marine floating platform flexible pipeline and cable prototype monitoring

Deciphering the critical effect of cathode-electrolyte interphase by revealing its dynamic evolution

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Journal of Energy Chemistry 2023年第6期81卷 192-199,I0006页

作者： Zhengfeng Zhang Changdong Qin kuan.Wang Xiao Han Jinhui Li Manling Sui Pengfei yan Beijing Key Laboratory of Microstructure and Property of Solids Faculty of Materials and ManufacturingBeijing University of TechnologyBeijing 100124China

Cathode electrolyte interphase(CEI)layer plays a crucial role in determining the electrochemical performance of lithium-ion *** by the sensitive nature of CEI and the lack of characterization techniques,its dynamic evolution during cycling,its formation mechanism,and its specific impact on battery performance are not yet fully ***,we systematically investigate the dynamic evolution of CEI layer and its critical effect on the cycling performance of LiCoO_(2)cathode by diverse characterization *** find that cycling voltage plays a key role in affecting CEI formation and evolution,and a critical potential(4.05 V ***)is identified,which acts as the switching potential between CEI deposition and *** show that CEI starts deposition in the discharge process when the potential is below 4.05 V,and CEI decomposition occurs when the potential is higher than 4.05 *** the battery is cycled below such a critical potential,a stable CEI layer is developed,which leads to superior cycling *** the battery is cycled above such a critical potential,a CEI-free cathode interface is observed,which also demonstrates good cycle ***,when the critical potential falls in the cycling voltage range,CEI deposition and decomposition are repeatedly switched on during cycling,leading to the dynamically unstable CEI *** unstable CEI layer causes continuous interfacial reaction and degradation,resulting in battery performance *** work deepens the understanding of the CEI formation and evolution mechanisms,and clarifies the critical effect of CEI layer on cycling performance,which provides new insights into stabilizing the electrode-electrolyte interface for high-performance rechargeable batteries.

关键词： LiCoO_(2) CEI Lithium-ion battery Electron microscopy XPS

Optimal preparation of high-entropy boride-silicon carbide ceramics

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Journal of Advanced Ceramics 2021年第1期10卷 173-180页

作者： yan.ZHANG Shi-kuan.SUN Wei-Ming GUO Liang XU Wei ZHANG Hua-Tay LIN School of Electron-mechanical Engineering Guangdong University of TechnologyGuangzhou 510006China Department of Materials Science and Engineering University of SheffieldSheffield SI 3JDUK

High-entropy boride-silicon carbide(HEB-SiC)ceramics were fabricated using boridebased powders prepared from borothermal and boro/carbothermal reduction *** effects of processing routes(borothermal reduction and boro/carbothermal reduction)on the HEB powders were ***-SiC ceramics with>98%theoretical density were prepared by spark plasma sintering at 2000℃.It was demonstrated that the addition of SiC led to slight coarsening of the *** HEB-SiC ceramics prepared from boro/carbothermal reduction powders showed a fine-grained microstructure and higher Vickers9 hardness but lower fracture toughness value as compared with the same composition prepared from borothermal reduction *** results indicated that the selection of the powder processing method and the addition of SiC phase could contribute to the optimal preparation of high-entropy boride-based ceramics.

关键词： high-entropy boride-silicon ceramics borothermal reduction boro/carbothermal reduction microstructure mechanical properties

Contribution of gut microbiota to drug-induced liver injury

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Hepatobiliary & Pancreatic Diseases International 2023年第5期22卷 458-465页

作者： Hui-kuan.Chu yan.Ai Zi-Lu Cheng Ling yan. Xiao-Hua Hou Division of Gastroenterology Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022China

Drug-induced liver injury(DILI)is caused by various drugs with complex pathogenesis,and diverse clinical and pathological *** damage the liver directly through drug hepatotoxicity,or indirectly through drug-mediated oxidative stress,immune injury and inflammatory insult,which eventually lead to hepatocyte *** studies have found that the composition,relative content and distribution of gut microbiota in patients and animal models of DILI have changed *** has been confirmed that gut microbial dysbiosis brings about intestinal barrier destruction and microorganisms translocation,and the alteration of microbial metabolites may cause or aggravate *** addition,antibiotics,probiotics,and fecal microbiota transplantation are all emerging as prospective therapeutic methods for DILI by regulating the gut *** this review,we discussed how the altered gut microbiota participates in DILI.

关键词： Gut microbiota Lipopolysaccharide Probiotics Fecal microbiota transplantation Drug-induced Liver injury

Removal of formaldehyde over Mn_xCe_(1- x)O_2 catalysts: Thermal catalytic oxidation versus ozone catalytic oxidation

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Journal of Environmental Sciences 2014年第12期26卷 2546-2553页

作者： Jia Wei Li kuan.Lun Pan Sheng Jen Yu Shaw Yi yan.Moo Been Chang Graduate Institute of Environmental Engineering National Central University Industrial Technology Research Institute

MnxCe1- xO2（x： 0.3–0.9） prepared by Pechini method was used as a catalyst for the thermal catalytic oxidation of formaldehyde（HCHO）. At x = 0.3 and 0.5, most of the manganese was incorporated in the fluorite structure of Ce O2 to form a solid solution. The catalytic activity was best at x = 0.5, at which the temperature of 100% removal rate is the lowest（270°C）. The temperature for 100% removal of HCHO oxidation is reduced by approximately 40°C by loading 5 wt.% Cu Oxinto Mn0.5Ce0.5O2. With ozone catalytic oxidation, HCHO（61 ppm） in gas stream was completely oxidized by adding 506 ppm O3 over Mn0.5Ce0.5O2 catalyst with a GHSV（gas hourly space velocity） of 10,000 hr-1at 25°C. The effect of the molar ratio of O3 to HCHO was also investigated. As O3/HCHO ratio was increased from 3 to 8, the removal efficiency of HCHO was increased from 83.3% to 100%. With O3/HCHO ratio of 8, the mineralization efficiency of HCHO to CO2 was 86.1%. At 25°C, the p-type oxide semiconductor（Mn0.5Ce0.5O2） exhibited an excellent ozone decomposition efficiency of 99.2%,which significantly exceeded that of n-type oxide semiconductors such as Ti O2, which had a low ozone decomposition efficiency（9.81%）. At a GHSV of 10,000 hr-1, [O3]/[HCHO] = 3 and temperature of 25°C, a high HCHO removal efficiency（≥ 81.2%） was maintained throughout the durability test of 80 hr, indicating the long-term stability of the catalyst for HCHO removal.

关键词： Formaldehyde Volatile organic compounds Indoor air pollutant Thermal catalytic oxidation Ozone catalytic oxidation