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| 1 | A novel quality evaluation method for magnolia bark using electronic nose and colorimeter data with multiple statistical algorithms显示文摘Background:Magnolia bark(Magnolia Officinalis REHD.&WILS.and Magnolia officinalis REHD.&WILS.VAR.biloba REHD.&WILS,Hou Po in Chinese),is widely applied in clinical prescriptions and Chinese patent medicines.Origin place is a crucial factor affecting the quality of Hou Po,and chemical composition is an important index for evaluating its quality,which is closely related to its clinical efficacy.This study aims to develop a novel method for rapidly,accurately and comprehensively identifying the origin places of Hou Po and predicting the contents of its important chemical components.Methods:High performance liquid chromatography was used to analyze the contents of magnolol and honokiol and ultra-performance liquid chromatography the contents of magnocurarine and magnoflorine.The cold soak method was used to determine the contents of water-soluble extracts.The E-nose and colorimeter were used to determine the odor and color characteristics,respectively,of the collected Hou Po samples.Results:Using several statistical algorithms,different discriminant models based on the E-nose and colorimeter data were established to distinguish the origin place of Hou-Po and predict the chemical components of honokiol,magnolol,magnocurarine,magnoflorine and water-soluble extracts.The results showed that the Random Forest classifier combined with the ten-fold cross-validation method provided the highest classification accuracy for origin place,accounting for 99.53%among these models.The correlation coefficients between predicted and experimental values of the five chemical components were all higher than 0.96.Conclusion:This study has indicated that the electronic nose and colorimeter are promising methods for evaluating the quality of Chinese herbal medicines both qualitatively and quantitatively. | Jiahui Li Yuanyang Shao Yuebao Yao Yuetong Yu Guangzhao Cao Huiqin Zou Yonghong Yan | 2020 | Journal of Traditional Chinese Medical Sciences2020，7，2： | 4 |
| 2 | Adenovirus-mediated gene transfer to biral IL-10 gene prolongs murine cardiac allograft survival显示文摘 | Chavin KD Yao Zhongding | 1996 | J Immunol1996，156，6： | 1 |
| 3 | Study on electrocatalytic oxidation of L-cysteine at glassy carbon electrode by ( FcM ) TMA and its electrochemical kinetics 显示文摘 | GAO Zuoning YAO Huiqin LIU Wanyi | 2005 | Electroanal2005，17，： | 1 |
| 4 | Electrochemical oxidation of isoniazid catalyzed by (FcM) TMA at platinum electrode and its practical analytical application显示文摘 | GAO Zuoning HAN Xiaoxiao YAO Huiqin | 2006 | Anal and Bioanal Chem2006，385，： | 1 |
| 5 | Study on elec trocatalytic oxidation of L-cysteine at glassy carbon electrode by (FcM) TMA and its electrochemical kinetics显示文摘 | Gao Zuoning Yao Huiqin Liu Wanyi | 2005 | Electroanalysis2005，17，7： | 1 |
| 6 | Correlation between 18F-FDG uptake and the expression of glucose transporter-1 and hypoxia-inducible factor-1α in transplanted VX2 tumors显示文摘 | Huiqin Xu Biao Li Wenjing Yu Hui Wang Xuefeng Zhao Yuanchun Yao Dake Huang | 2013 | Nuclear Medicine Communications2013，，10： | 1 |
| 7 | Oxygen-deficient MoO_(x)/Ni_(3)S_(2) heterostructure grown on nickel foam as efficient and durable self-supported electrocatalysts for hydrogen evolution reaction显示文摘High-performance and ultra-durable electrocatalysts are vital for hydrogen evolution reaction(HER)during water splitting.Herein,by one-pot solvothermal method,MoO_(x)/Ni_(3)S_(2) spheres comprising Ni_(3)S_(2) nanoparticles inside and oxygen-deficient amorphous MoO_(x) outside in situ grow on Ni foam(NF),to assembly the heterostructure composites of MoO_(x)/Ni_(3)S_(2)/NF.By adjusting volume ratio of the solvents of ethanol to water,the optimized MoO_(x)/Ni_(3)S_(2)/NF-11 exhibits the best HER performance,requiring an extremely low overpotential of 76 mV to achieve the current density of 10 mA∙cm‒2(η_(10)=76 mV)and an ultra-small Tafel slope of 46 mV∙dec^(-1) in 0.5 mol∙L^(-1) H_(2)SO_(4).More importantly,the catalyst shows prominent high catalytic stability for HER(>100 h).The acid-resistant MoO_(x) wraps the inside Ni_(3)S_(2)/NF to ensure the high stability of the catalyst under acidic conditions.Density functional theory calculations confirm that the existing oxygen vacancy and MoO_(x)/Ni_(3)S_(2) heterostructure are both beneficial to the reduced Gibbs free energy of hydrogen adsorption(|∆G_(H*)|)over Mo sites,which act as main active sites.The heterostructure effectively decreases the formation energy of O vacancy,leading to surface reconstruction of the catalyst,further improving HER performance.The MoO_(x)/Ni_(3)S_(2)/NF is promising to serve as a highly effective and durable electrocatalyst toward HER. | Zihuan Yu Haiqing Yan Chaonan Wang Zheng Wang Huiqin Yao Rong Liu Cheng Li Shulan Ma | 2023 | Frontiers of Chemical Science and Engineering2023，17，4： | 0 |
| 8 | Synergistic effect of V and Fe in Ni/Fe/V ternary layered double hydroxides for efficient and durable oxygen evolution reaction显示文摘High-performance and stable electrocatalysts are vital for the oxygen evolution reaction(OER).Herein,via a one-pot hydrothermal method,Ni/Fe/V ternary layered double hydroxides(NiFeV-LDH)derived from Ni foam are fabricated to work as highly active and durable electrocatalysts for OER.By changing the feeding ratio of Fe and V salts,the prepared ternary hydroxides were optimized.At an Fe:V ratio of 0.5:0.5,NiFeV-LDH exhibits outstanding OER activity superior to that of the binary hydroxides,requiring overpotentials of 269 and 274 mV at 50 mA·cm^(−2)in the linear sweep voltammetry and sampled current voltammetry measurements,respectively.Importantly,NiFeV-LDH shows extraordinary long-term stability(≥75 h)at an extremely high current density of 200 mA·cm^(−2).In contrast,the binary hydroxides present quick decay at 200 mA·cm^(−2)or even reduced current densities(150 and 100 mA·cm^(−2)).The outstanding OER performance of NiFeV-LDH benefits from the synergistic effect of V and Fe while doping the third metal into bimetallic hydroxide layers:(a)Fe plays a crucial role as the active site;(b)electron-withdrawing V stabilizes the high valence state of Fe,thus accelerating the OER process;(c)V further offers great stabilization for the formed intermediate of FeOOH,thus achieving superior durability. | Lihong Chen Ruxin Deng Shaoshi Guo Zihuan Yu Huiqin Yao Zhenglong Wu Keren Shi Huifeng Li Shulan Ma | 2023 | Frontiers of Chemical Science and Engineering2023，17，1： | 0 |
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