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Nanocarbon-based electrode materials applied for supercapacitors

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Rare Metals 2022年第12期41卷 3957-3975页

作者： yu-xiang yang Kang-Kang Ge Sajid ur Rehman Hong Bi School of Chemistry and Chemical Engineering School of Materials Science and EngineeringAnhui UniversityHefei 230601China CIRIMAT UMR CNRS 5085UniversitéPaul Sabatier ToulouseⅢToulouse 31062France CAS Key Laboratory of High Magnetic Field and Ion Beam Physical Biology Hefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China

As one of the promising energy storage and conversion systems,supercapacitors(SCs)are highly favored owing to their high power density and good service *** all the key components of supercapacitor devices,the design and investigation of electrode materials play an essential role in determining the whole electrochemical charge storage ***,nanocarbon-based materials(e.g.,graphene,carbon dots,graphene quantum dots,etc.)have been widely used as SC electrode materials because of their good physical structure and chemical properties,providing a new route to further improve the energy density and life span of ***,we review the latest progress of nanocarbon-based materials(including nanocarbon and nanocarbon-based composite materials)as electrode materials in SCs *** recent progress of carbon dots,graphene,carbon nanotubes,and other nanocarbon materials electrodes is summarized,while the capacitance and energy density of the above nanocarbon electrodes still need to be ***,the preparation and performance of nanocarbonbased composite electrodes comprising transition metal oxides,conductive polymer,and metal-organic framework derived porous carbon are ***,we outline major challenges and propose some ideas on building better nanocarbon-based SC electrodes.

关键词： Supercapacitor(SC) Nanocarbon Electrode materials Carbon dots Nanocarbon-based composite

Application of Current Hapten in the Production of Broad Specificity Antibodies Against Organophosphorus Pesticides

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Agricultural Sciences in China 2008年第11期7卷 1341-1347页

作者： LIU Xian-jin YAN Chun-rong LIU yuan yu xiang-yang ZHANG Cun-zheng Food Safety Research and Inspection Center Jiangsu Academy of Agricultural Sciences Nanjing 210014 P.R. China

Diethylphosphono acetic acid （DPA） was used as a current hapten to generate broad specificity polycolonal antibodies against a group of organophosphorus pesticides. Six New Zealand white rabbits were immunized with immunogens synthesized by the active ester method （AEM） or 1-ethyl-3-（3-dimethylaminopropyl）-carbodimide method （EDC）. The titers of antisera reached 25 600 by AEM and 6 400 by EDC, respectively. Polyclonal antibodies raised against DPA were screened and selected for the competitive indirect enzyme-linked immunosorbent assay （CI-ELISA）. A CI-ELISA for DPA was developed with a detection limit of 3.536 ng mL^-1and an I50 value of 0.182 μg mL^-1. The assay specificity was evaluated by obtaining competitive curves for several structurally related compounds as competitors. The antiserum showed high affinities to chlorpyrifos, diazinon, omethoate, parathion-ethyl and profenofos with I50 of 0.12, 0.15, 0.21, 0.88, 0.97 and 2.5 μg mL^-1, respectively. The results indicate that the assay could be a screening tool for quantitation and semiquantitation determination of the above former five organophosphorus pesticides.

关键词： organophosphorus pesticides broad specificity antibody enzyme-linked immunosorbent assay (ELISA)

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双视场多通道成像仪的光机结构

光学精密工程 2015年第10期23卷 2870-2876页

作者：于向阳中国科学院长春光学精密机械与物理研究所吉林长春130033

针对环境适应性和探测精度的要求,设计了双视场、多通道成像仪的光机结构,以获取高空间、时间覆盖和高垂直分辨率的大气图像和数据信息。根据光学探测和光学定位精度的要求,设计的光学系统结构以及对应的机械结构采用了天底和临边多方... 详细信息

针对环境适应性和探测精度的要求,设计了双视场、多通道成像仪的光机结构,以获取高空间、时间覆盖和高垂直分辨率的大气图像和数据信息。根据光学探测和光学定位精度的要求,设计的光学系统结构以及对应的机械结构采用了天底和临边多方位观测模式。该结构通过柔性系统保证了成像仪在45°C的温差范围内能够正常工作。由于温差较大,系统中构建了CCD探测器裸片的精密定位与散热系统。为验证光机结构设计的正确性,对集成后的成像仪进行了光学系统性能检测。检测实验显示,边界温度状况下3个光学通道的分辨率均优于4km,达到对地球临边和天底大气进行探测的需求。成像仪的质量为8.3kg,其一阶基频大于100 Hz,最大应力为52.5 MPa。该光机结构设计合理、紧凑,满足刚度、强度以及目标探测要求,适合空间遥感的应用。

关键词：大气遥感双视场多通道成像仪光机结构临边与天底观测

Cross-Cultural Pragmatic Failure in Business English Interpretation

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大众商务（下半月） 2009年第12期 198-199页

作者： yu Xu - xiang yang Ke （School of Foreign Languages for Finance and Economics Southwestern University of Finance and Economics Chengdu611130 China）

Fluorescence-Detected Ultrafast Free-Induction Decay in Powdered Rare Earth Solids

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Chinese Physics Letters 2000年第2期17卷 101-103页

作者： LUO Qi DAI De-Chang yu xiang-yang QIU Zhi-Ren ZHOU Jian-Ying YAN Chun-Hua CHEN Zhi-Da State Key Laboratory of Ultrafast Laser Spectroscopy Zhongshan UniversityGuangzhou 510275 State Key Laboratory of Rare Earth Materials Chermistry and Applications Peking UniversityBeijing 100871

Fluorescence interferometry is developed and applied to study ultrafast amplitude and phase dynamics for fleeinduction decay in powdered rare earth solids. The time-resolved phase dynamics of free-induction decay throughout the decaying process is accurately determined by using a novel dual-channel correlation technique and subpicosecond dephasing time is measured for Nd3+ solids at room temperature. The phase dynamics is well simulated with linear coherent polarization theory.

关键词： temperature theory Fluorescence

二能级体系Maxwell-Bloch方程的数值求解及其应用

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中山大学学报（自然科学版） 2007年第S2期46卷 176-179页

作者：蒋月余向阳中山大学光电材料与技术国家重点实验室广东广州510275

用有限差分法求解了二能级体系的Maxwell-Bloch(MB)耦合方程。在忽略驰豫时间和共振的条件下,MB方程可化为标准的sine-Gordon(SG)方程,MB方程数值的解的结果与SG方程孤子解的结果有很好的一致性。所建立的数值解法,具有良好的收敛性和... 详细信息

用有限差分法求解了二能级体系的Maxwell-Bloch(MB)耦合方程。在忽略驰豫时间和共振的条件下,MB方程可化为标准的sine-Gordon(SG)方程,MB方程数值的解的结果与SG方程孤子解的结果有很好的一致性。所建立的数值解法,具有良好的收敛性和可靠性,并可保持算法的误差阶数,因而算法是可靠实用的。求解结果用于分析二能级体系与超短激光脉冲相互作用的光传输特性。同时,验证了面积定理,研究了初始面积、失谐量和弛豫时间对光场面积演化的影响。该方法对求解MB方程以及修正的这类微分方程组具有普适性。

关键词： Maxwell-Bloch方程二能级体系偏微分方程数值解法面积定理

Development and evaluation of immunoassay for zeranol in bovine urine

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2007年第12期8卷 900-905页

作者： LIU yuan ZHANG Cun-zhen yu xiang-yang ZHANG Zhi-yong ZHANG Xiao LIU Rong-rong LIU Xian-jin GONG Zhen-ming Institute of Food Safety Jiangsu Academy of Agricultural Sciences Nanjing 210014 China School of Agriculture and Biology Shanghai Jiao Tong University Shanghai 200030 China

A high affinity polyclonal antibody-based enzyme linked immunosorbent assay （ELISA） was developed for the quantification of zeranol in bovine urine. On the basis of urine matrix studies, the optimized dilution factors producing insignificant matrix interference were selected as 1：5 in pretreatment. In the improved ELISA, the linear response range was between 0.02 and 1 μg/ml, and the detection limit was 0.02 μg/ml for the assay. The overall recoveries and the coefficients of variation （CVs） were in the range of 82%-127% and 3.5%-8.8%, respectively. Thirty-six bovine urine samples spiked with zeranol （ranging from 0.2 to 10 μg/ml） were detected by the ELISA and liquid chromatography （LC） method, and good correlations were obtained between the two methods （R^2=0.9643）. We conclude that this improved ELISA is suitable tool for a mass zeranol screening and can be an altemative for the conventional LC method for zeranol in bovine urine.

关键词： Zeranol Enzyme linked immunosorbent assay (ELISA) Bovine urine

Optimal Sliding Mode Recruitment Schemes of Enterprise Knowledge Workers System

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Optimal Sliding Mode Recruitment Schemes of Enterprise Knowl...

第40届中国控制会议

作者： yang-Shun Ma Bao-Lin Zhang yu-xiang yang College of Economics and Management China Jiliang University College of Science China Jiliang University

This paper deals with the recruitment schemes of enterprise knowledge workers system based on the optimal sliding mode control ***,by considering job-transfer,natural resignation,voluntary resignation,promotion,recruitment and dismissal,the enterprise knowledge workers system can be modeled as a dynamic nonlinear uncertain ***,by using the optimal sliding mode control method,the design method of the optimal sliding mode control law for the system is *** condition for the asymptotic stability of the sliding mode manifold is proposed,and it is proved that under such a control law,the state of the enterprise knowledge workers system can reach the sliding surface in a finite *** results show that the optimal sliding mode control law（recruitment schemes） proposed in this paper can make enterprise knowledge workers system asymptotically ***,under the presented control law,the system is robust to parameter perturbation.

关键词： Knowledge workers Sliding mode control Optimal control Recruitment Stability

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紫外CCD焦平面组件的设计与分析

机械设计 2015年第12期32卷 97-100页

作者：于向阳中国科学院长春光学精密机械与物理研究所吉林长春130033

针对紫外电荷耦合器件(Charge-Coupled Device,CCD)探测器裸片不能够用于空间探测的难题,首先提出CCD探测器裸片的定位与导热方案,设计出对应的CCD探测器组件和在此基础上的CCD焦平面组件,然后进行了结构、热的有限元仿真和试验验证分... 详细信息

针对紫外电荷耦合器件(Charge-Coupled Device,CCD)探测器裸片不能够用于空间探测的难题,首先提出CCD探测器裸片的定位与导热方案,设计出对应的CCD探测器组件和在此基础上的CCD焦平面组件,然后进行了结构、热的有限元仿真和试验验证分析。结果表明,CCD探测器裸片的定位、导热方案合理,设计出的CCD焦平面组件能够满足空间紫外遥感的应用。

关键词： CCD探测器焦平面组件有限元设计与分析