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中南模糊数学和系统分会第三届年会

作者： ye qiusun liu shunxing (Computing Center of Jian Yang Commercial School,Jian Yang FuJian 354200)

This paper bases itself upon the analysing and researching of numbers’ canying,and gives out a new and broad concept of numbers,namely the VCN of *** it points out that,at the moment,in international Maths and Computer Science,the basic reasons of puzzled realm in which numbers have been deeply studied and developed at a standstill are all researches on numbers only confined to a same varying rule of the *** the meantime,it also points out that,the application of VCN for n-bits is wider than that of FCN for n-bits,and it gives out some applied examples.

关键词： VCN-variable-carrying numbers FCN-fixed-canTing numbers

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Nitrogen-doped carbon@TiO_(2) double-shelled hollow spheres as an electrochemical sensor for simultaneous determination of dopamine and paracetamol in human serum and saliva

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Journal of Pharmaceutical Analysis 2022年第3期12卷 436-445页

作者： Hui Yang Gongxun Cao Yongjun Huang ye Lin Fengying Zheng Luxiu Lin Fengjiao liu shunxing Li College of Chemistry Chemical Engineering and EnvironmentMinnan Normal UniversityZhangzhouFujian363000China Fujian Provincial Key Laboratory of Pollution Monitoring and Control Minnan Normal UniversityZhangzhouFujian363000China Fujian Key Laboratory of Separation and Analysis Science and Technology ZhangzhouFujian363000China

As the most commonly used antipyretic and analgesic drug,paracetamol(PA)coexists with neurotransmitter dopamine(DA)in real biological *** simultaneous determination is extremely important for human health,but they also interfere with each *** order to improve the conductivity,adsorption affinity,sensitivity,and selectivity of TiO_(2)-based electrochemical sensor,N-doped carbon@-TiO_(2) double-shelled hollow sphere(HeC/N@TiO_(2))is designed and synthesized by simple alcoholic and hydrothermal method,using polystyrene sphere(PS)as a ***,TiO_(2) hollow spheres(H eTiO_(2))or N-doped carbon hollow spheres(HeC/N)are also prepared by the same ***/N@TiO_(2) has good conductivity,charge separation,and the highly enhanced and stable current responses for the detection of PA and *** detection limit and linear range are 50.0 nmol/L and 0.3-50 mmol/L for PA,40.0 nmol/L and 0.3e50 mmol/L for DA,respectively,which are better than those of carbon-based ***,this electrochemical sensor,with high selectivity,strong anti-interference,high reliability,and long time durability,can be used for the simultaneous detection of PA and DA in human blood serum and *** high electrochemical performance of HeC/N@TiO_(2) is attributed to the multifunctional combination of different layers,because of good conductivity,absorption and electrons transfer ability from in-situ N-doped carbon and electrocatalytic activity from TiO_(2).

关键词： Electrochemical sensor Simultaneous determination Paracetamol Dopamine

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