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| 1 | Elevated 8-oxo-7,8-dihydro-2'-deoxyguanosine in genome of T24 bladder cancer cells induced by halobenzoquinones显示文摘Halobenzoquinones(HBQs) are an emerging class of halogenated disinfection byproducts(DBPs) in drinking water, which raised public concerns due to potential carcinogenic effects to human bladder. Our previous work demonstrated that HBQs and hydrogen peroxide(H_2O_2)together generated oxidative DNA damage via a metal-independent and intercalationenhanced oxidation mechanism in vitro. This study further investigated the efficiency of various HBQs to induce oxidative DNA damage in T24 bladder cancer cells. Compared with T24 cells without treatment(3.1 lesions per 10~6 d G), the level of 8-oxo-7,8-dihydro-2′-deoxyguanosine(8-oxod G) significantly increased by 1.4, 3.2, 8.8, and 9.2 times after treatment with tetrabromo-1,4-benzoquinone(TBBQ), terachloro-1,4-benzoquinone(TCBQ),2,6-dichloro-1,4-benzoquinone(2,6-DCBQ) and 2,5-dichloro-1,4-benzoquinone(2,5-DCBQ) for24 hr, respectively. Interestingly, we found that the oxidative potency of HBQs in T24 cells(2,5-DCBQ ≈ 2,6-DCBQ > TCBQ > TBBQ) is inconsistent with that of in vitro ds DNA oxidation(TCBQ > TBBQ > 2,5-DCBQ > 2,6-DCBQ), suggesting HBQs induce oxidative lesions in cellular genomic DNA probably involved with a complex mechanism. | Tian Xu Junfa Yin Shaokun Chen Dapeng Zhang Hailin Wang | 2018 | Journal of Environmental Sciences2018，30，1： | 5 |
| 2 | Study on Thermal Simulation of Solidification in Heavy Section Ductile Iron显示文摘Using an artificial intelligent instrument and a computer feedback control method, a new thermal simulation systemis studied. Based on numerical simulation of casting solidification, a sample in the new system successfully simulatedthe solidification of heavy section ductile iron. The results show that the new thermal simulation system is accurateand reliable. Not only cooling curve but also graphite in the center of the thermal sample and the heavy sectionductile iron is identical. Realization of accurate thermal simulation of solidification in heavy section ductile iron willbe helpful for studying formation mechanism and controlling graphite degeneration in heavy section ductile iron. | Zhenhua LI Yanxiang LI Huiyuan GENG Jianjun CHEN Chunyan ZHOU Junfa CHEN | 2003 | Journal of Materials Science & Technology2003，19，z1： | 5 |
| 3 | Synergistic catalysis of cluster and atomic copper induced by copper-silica interface in transfer-hydrogenation显示文摘To data,using strong metal-support interaction(SMSI)effect to improve the catalytic performance of metal catalysts is an important strategy for heterogeneous catalysis,and this effect is basically achieved by using reducible metal oxides.However,the formation of SMSI between metal and inert-support has been so little coverage and remains challenge.In this work,the SMSI effect can be effectively extended to the inert support-metal catalysis system to fabricate a Cu^(0)/Cu-doped SiO_(2) catalyst with high dispersion and loading(38.5 wt.%)through the interfacial effect of inert silica.In the catalyst,subnanometric composite of Cu cluster and atomic copper(in the configuration of Cu-O-Si)can be consciously formed on the silica interface,and verified by extended X-ray absorption fine structure(EXAFS),in situ X-ray photoelectron spectroscopy(XPS),and high-angle annular dark field-scanning transmission electron microscopy(HAADF-STEM)characterization.The promoting activity in transfer-hydrogenation by the SMSI effect of Cu-silica interface and the synergistic active roles of cluster and atomic Cu have also been revealed from surface interface structure,catalytic activity,and density functional theory(DFT)theoretical calculation at an atomic level.The subnanometric composite of cluster and atomic copper species can be derived from a facile synthesis strategy of metal-inert support SMSI effect and the realistic active site of Cu-based catalyst can also been identified accurately,thus it will help to expand the application of subnanometric materials in industrial catalysis. | Ruoyu Fan Yange Zhang Zhi Hu Chun Chen Tongfei Shi Lirong Zheng Haimin Zhang Junfa Zhu Huijun Zhao Guozhong Wang | 2021 | Nano Research2021，14，12： | 3 |
| 4 | On the numerical stability of the precise integration time-do- main (PITD) method显示文摘 | JIANG Lele CHEN Zhizhang MAO Junfa | 2007 | IEEE Microwave and Wireless Components Letters2007，17，7： | 1 |
| 5 | Rapid and efficient chiral separation of nateglinide and its l-enantiomer on monolithic molecularly imprinted polymers显示文摘 | Yin Junfa Yang Gengliang Chen Yi | 2005 | Journal of Chromatography A2005，，1090： | 1 |
| 6 | Rapid and efficient chiral separation of nateglinide and its l-enantiomer on monolithic molecularly imprinted polymers显示文摘 | YIN Junfa YANG Gengliang CHEN Yi | 2005 | J Chromatogr A2005，1090，： | 1 |
| 7 | Rapid and efficient chiral separation of nateglinide and its Ⅰ-enantiomer on mo- nolithic molecularly imprinted polymers 显示文摘 | Yin Junfa Yang Gengliang Chen Yi | 2005 | J Chromatogy A2005，1090，2： | 1 |
| 8 | Purification and determination of stachyose in Chinese artichoke ( Stachys Sieboldii Miq.) by high-performance liquid chromatography with evaporative light scattering detection显示文摘 | Junfa Yin Gengliang Yang Sumin Wang Yi Chen | 2006 | Talanta2006，，1： | 1 |
| 9 | Boosting the Rate Performance of Li–S Batteries via Highly Dispersed Cobalt Nanoparticles Embedded into Nitrogen-Doped Hierarchical Porous Carbon显示文摘Lithium–sulfur(Li–S)batteries are one of the most promising alternatives to lithium–ion batteries because of the advantageous high energy density and low cost.However,the practical applications of Li–S batteries are hampered by a severe shuttle effect and sluggish polysulfide redox conversion.Herein,highly dispersed cobalt nanoparticles(∼0.8 wt%)embedded into nitrogen-doped hierarchical porous carbon(Co@N-HPC)are designed as an effective electrocatalyst for Li–S batteries,which exhibit a synergistic effect of anchoring and dual-directional catalytic conversion of polysulfides. | Cheng Yuan Pan Zeng Chen Cheng Tianran Yan Genlin Liu Wenmin Wang Jun Hu Xin Li Junfa Zhu Liang Zhang | 2022 | CCS Chemistry2022，4，8： | 1 |
| 10 | Generating oxygen adatoms on Au(997) by thermal decomposition of NO_2显示文摘We report our investigation of the interaction of NO2 with the Au(997)vicinal surface by high-resolution photoelectron spectroscopy using synchrotron radiation as the excitation source.At 170 K,both core-level and valence-band photoemission results illustrate the decomposition of NO2 on the Au(997)surface at low NO2 exposures,forming coadsorbed NO(a)and O(a)species.After annealing at 300 K,NO(a)desorbs from Au(997)whereas O(a)remains on the surface.Upon annealing at 750 K,we observe no signal for adsorbed oxygen on Au(997).These results clearly demonstrate that thermal decomposition of NO2 is an effective method to generate oxygen adatoms on Au(997)under ultrahigh-vacuum conditions. | ZHANG YuLin WU ZongFang CHEN BoHao XU LingShun PAN HaiBin MA YunSheng JIANG ZhiQuan ZHU JunFa HUANG WeiXin | 2010 | Chinese Science Bulletin2010，55，34： | 0 |
| 11 | TiN nanocrystal anchored on N-doped graphene as effective sulfur hosts for high-performance lithium-sulfur batteries显示文摘Lithium-sulfur(Li-S)batteries have become prospective candidates for next-generation energy storage owing to the high energy density and low cost.However,the sluggish kinetics of the electrochemical reaction and shuttle effect result in a rapid capacity decay.Herein,a titanium nitride nanocrystal/Ndoped graphene(TiN@NG)composite is developed to host elemental sulfur.The TiN nanoparticles decorated on graphene sheets attract Li polysulfides(LiPSx)and catalyze the electrochemical reduction and oxidation of LiPSx in the discharge and charge processes,respectively.These two effects effectively restrain the dissolution of the LiPSx and accelerate the electrochemical reactions,thereby,alleviating the shuttle effect.As a result,the cathode composed of TiN@NG/S delivers a remarkable reversible capacity(1390 mA h g^(-1) at 0.1 C)and excellent cycling performance(730 mA h g^(-1) after 300 cycles).We believe that this work can bring some inspiration for designing high-performance Li-S batteries. | Wenmiao Chen Hongchang Jin Shuai Xie Huanyu Xie Junfa Zhu Hengxing Ji Li-Jun Wan | 2021 | Journal of Energy Chemistry2021，30，3： | 0 |
| 12 | An in-situ spectroscopy investigation of alkali metal interaction mechanism with the imide functional group显示文摘Organic anode materials have attracted considerable interest owing to their high tunability by adopting various active functional groups.However,the interaction mechanisms between the alkali metals and the active functional groups in host materials have been rarely studied systematically.Here,a widely used organic semiconductor of perylene-3,4,9,10-tetracarboxylic diimide(PTCDI)was selected as a model system to investigate how alkali metals interact with imide functional groups and induce changes in chemical and electronic structures of PTCDI.The interaction at the alkali/PTCDI interface was probed by in-situ X-ray photoelectron spectroscopy(XPS),ultraviolet photoelectron spectroscopy(UPS),synchrotron-based near edge X-ray absorption fine structure(NEXAFS),and corroborated by density functional theory(DFT)calculations.Our results indicate that the alkali metal replaces the hydrogen atoms in the imide group and interact with the imide nitrogen of PTCDI.Electron transfer induced gap states and downward band-bending like effects are identified on the alkali-deposited PTCDI surface.It was found that Na shows a stronger electron transfer effect than Li.Such a model study of alkali insertion/intercalation in PTCDI gives insights for the exploration of the potential host materials for alkali storage applications. | Xu Lian Zhirui Ma Zhonghan Zhang Jinlin Yang Shuo Sun Chengding Gu Yuan Liu Honghe Ding Jun Hu Xu Cao Junfa Zhu Shuzhou Li Wei Chen | 2020 | Nano Research2020，13，12： | 0 |
| 13 | A Rapid and Simple Method for Quantitative Aziridination from Aminobrominated Derivatives of Olefins under Solvent-free and Mild Conditions显示文摘从石蜡的 aminohalogenation 导出的 1,2-vicinal haloamines 的催化脲的 aziridination 被开发了。这个快速、简单的方法被简单地在空中在房间温度磨底层, K2CO3 和脲的催化数量的稳固的混合执行。反应在包括的石蜡的 aminohalogenated 衍生物的一个大范围为 aziridines 的量的准备提供一个协议,不饱和的酉同类,,不饱和的酉旨和简单石蜡。包含支持 deprotonation 的 H 契约的可能的机制为这反应被建议了。 | Wei,Junfa Chen,Zhanguo Gao,Yanni Zhang,Peng Wang,Chuanning Zhao,Pengfei Wang,Yun Shi,Xianying | 2012 | Chinese Journal of Chemistry2012，30，2： | 0 |
| 14 | Electric Vehicle Charging Capacity of Distribution Network Considering Conventional Load Composition显示文摘At present,the large-scale access to electric vehicles(EVs)is exerting considerable pressure on the distribution network.Hence,it is particularly important to analyze the capacity of the distribution network to accommodate EVs.To this end,we propose a method for analyzing the EV capacity of the distribution network by considering the composition of the conventional load.First,the analysis and pretreatment methods for the distribution network architecture and conventional load are proposed.Second,the charging behavior of an EVis simulated by combining the Monte Carlo method and the trip chain theory.After obtaining the temporal and spatial distribution of the EV charging load,themethod of distribution according to the proportion of the same type of conventional load among the nodes is adopted to integrate the EV charging load with the conventional load of the distribution network.By adjusting the EV ownership,the EV capacity in the distribution network is analyzed and solved on the basis of the following indices:node voltage,branch current,and transformer capacity.Finally,by considering the 10-kV distribution network in some areas of an actual city as an example,we show that the proposed analysis method can obtain a more reasonable number of EVs to be accommodated in the distribution network. | Pengwei Yang Yuqi Cao Jie Tan Junfa Chen Chao Zhang Yan Wang Haifeng Liang | 2023 | Energy Engineering2023，120，3： | 0 |
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