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Redox-responsive ferrocene-containing poly(ionic liquid)s for antibacterial applications

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Science China Chemistry 2019年第1期62卷 95-104页

作者： Tikai Zhang Jiangna guo Yingying Ding Hailei mao Feng Yan Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application Department of Polymer Science and EngineeringCollege of Chemistry Chemical Engineering and Materials Science Soochow University Department of Anesthesiology and Critical Care Medicine Zhongshan Hospital Fudan University

Ferrocene(Fc)-containing imidazolium type ionic liquids(ILs) and corresponding poly(ionic liquid)(PIL) membranes with tunable antibacterial activity based on electrochemical redox reaction and host-guest chemistry were developed. The effect of Fc moiety on the antimicrobial activities against both Staphylococcus aureus(S. aureus) and Escherichia coli(E. coli) was studied by minimum inhibitory concentration(MIC). The presence of Fc groups highly enhanced the antibacterial efficiency of Fccontaining ILs because of the generation of reactive oxygen species(ROS). The electrochemical oxidation of Fc to Fc+and the formation of inclusion complexes between Fc and β-CD via host-guest interactions decreased the antibacterial activities of ILs and PIL membranes. The antibacterial activities may be recovered in some extent upon the electrochemical reduction of Fc+to Fc or the exclusion of the Fc out of the cavity of β-CD. Furthermore, all the Fc-containing PIL membranes showed relatively low hemolysis activities and none cytotoxicity toward human cells, indicating clinical feasibility in topical applications.

关键词： antibacterial activities imidazolium cations ferrocene poly(ionic liquid) cytotoxicity

Synthesis of ordered mesoporous manganese titanium composite oxide catalyst for catalytic ozonation

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Chinese Journal of Chemical Engineering 2018年第9期26卷 1862-1872页

作者： Chaofei Fei Dan Li Xian mao Yu guo Wenheng Jing State Key Laboratory of Materials-Oriented Chemical Engineering Nanjing Tech University

In this account,highly ordered mesoporous MnO_x/TiO_2composite catalysts with efficient catalytic ozonation of phenol degradation were synthesized by the sol–gel *** surface morphology and properties of the catalysts were characterized by several analytical methods,including SEM,TEM,BET,XRD,FTIR,and ***,Mn doping was found to improve the degree of order,and the ordered mesoporous structure was optimized at 3%***,MnO_xwas highly dispersed in the ordered mesoporous materials to yield good catalytic ozonation *** could completely be degraded in 20 min and mineralized at 79%in 60 ***,the catalyst greatly improved the efficiency of degradation and mineralization of phenol when compared to single O_3or O_3+TiO_***,the reaction mechanism of the catalyst was discussed and found to conform to pseudo-first-order reaction dynamics.

关键词： Ordered mesoporous MnOx Catalytic ozonation Pseudo-first-order reaction

Dynamic Alignment of D2 Enhanced by Two Few-cycle Pulses

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Chinese Journal of Chemical Physics 2008年第5期21卷 421-426页

作者： Zeng-qiang Yang Zhi-rong guo Bao-xiang Yin mao-zhu Sun Key Laboratory of Ecophysics and Department of Physics Normal College Shihezi University Shihezi832003 China

Dynamic alignment of D2 induced by two few-cycle pulses was investigated by solving the time-dependent Schr6dinger equation numerically based on a rigid rotor model. The results show that alignment of D2 can be enhanced by two few-cycle pulses compared with the level achievable by a single few-cycle pulse as long as the time delay between two pulses is chosen properly, and the pulse duration of two lasers plays an important role in the aligning process of D2 molecules.

关键词： Dynamic alignment Few-cycle pulses Pulse duration

Comments on Chinese guidelines for diagnosis and treatment of melanoma 2018(English version)

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Chinese Journal of Cancer Research 2019年第5期31卷 740-741页

作者： Xue Bai Lili mao Jun guo Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing) Department of Renal Cancer and Melanoma Peking University Cancer Hospital & Institute

Melanoma is a rare malignant tumor in China;however,its mortality rate is high and the incidence rate is also increasing year by *** order to improve the efficacy of melanoma treatment,the National Health Commission of the People’s Republic of China revised Chinese guidelines for diagnosis and treatment of melanoma in 2018,and meanwhile its modified English version Chinese guidelines for diagnosis and treatment of melanoma 2018(English version)(1)is also *** on the most updated research findings for the Chinese ethnicity with emphasis on acral and mucosal melanomas,two most commonly seen subtypes in Asia,as well as treatment for melanoma liver metastases.

关键词： diagnosis melanoma treatment

Broadband topological valley-projected edge-states transport in composite structure phononic crystal

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Chinese Physics B 2021年第8期30卷 418-423页

作者： Hong-Yong mao Fu-Jia Chen Kai guo Zhong-Yi guo School of Computer and Information Hefei University of TechnologyHefei 230009China

The topological valley transport,realized in phononic crystals,has aroused tremendous interest in these *** previous researches have further promoted the development of this transport ***,the bandwidth of the valley-projected edge mode has been an essential research *** is well known,the broadband will improve the adaptability of the acoustic edge-states,which will be more conducive to the transmission of ***,in this paper,we present a composite structure,composed of the atoms with different shapes forming a hexagonal lattice,which can achieve larger bandwidth than a single ***,the results demonstrate that the topological protected edge states are also observed in our ***,the backscattering suppressions from associated valley-protected edge states under certain perturbations have also been investigated and *** work can provide a new idea for designing acoustic devices based on valley degree of freedom.

关键词： valley transport composite structures broadband edge-states

Comparison of Grain Size in Plain Carbon Hot-Rolled Sheets Manufactured by CSP and Conventional Rolling Processing

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Journal of Iron and Steel Research International 2012年第1期19卷 17-22页

作者： ZHU Xue-song ZHU guo-hui mao Wei-min School of Materials Science and Engineering University of Science and Technology Beijing Beijing 100083 China School of Materials Science and Engineering Anhui University of Technology Ma＇anshan 243002 Anhui China

Average grain size and grain size distribution in as hot-rolled SPHC, SPHD, and SPHE sheets manufac- tured by compact strip production （CSP） processing and traditional continuous casting and rolling （CCR） processing respectively were investigated by quantitative metallographic method. The results show that the average grain size and distribution width of grain size in sheets manufactured by CSP processing was obviously larger than that by CCR processing. It was analyzed that multi-phase transformation and high reduction ratio in CCR processing resulted in refining grain size, which would be dominant reason for controlling grain size. In plain carbon steels such as SPHC, SPHD and SPHE, the effect of fine precipitation in CSP on behavior of deformation and recrystallization of austenite during roiling, and consequent refinement of grain size seem not to be as important as the effect of reheating and roughing in CCR processing. Homogenizing in reheating and refining grain size in roughing in CCR processing would refine final grain size and also make grain size homogenized, Very coarse grain size would result in mixed grain size, large distribution width of grain size due to interaction of static and dynamic recrystallization in CSP processing

关键词： CSP CCR hot-rolled plate grain size

One-step synthesis of α,β-unsaturated arylsulfones by a novel multicomponent reaction of aromatic aldehydes,chloroacetonitrile,benzenesulfinic acid sodium salt

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Chinese Chemical Letters 2012年第12期23卷 1352-1354页

作者： Lei Zhang mao Hua Ding Hong Yun guo College of Chemical Engineering and Materials Zhejiang University of Technology

A new and green method for the synthesis of α,β-unsaturated arylsulfones had been achieved through the condensation of aromatic aldehydes, chloroacetonitrile, benzenesulfinic acid sodium salt in the presence of 1-butyl-3-methyl imidazolium hydroxide （[bmim]OH） in EtOH under reflux. The ionic liquid was recovered and recycled for subsequent reactions. The advantages of this protocol were non-toxic, easy work-up and good yields.

关键词： Ionic liquids Benzenesulfinic acid sodium salt α,β-Unsaturated arylsulfones

A novel machine learning approach(svm Somatic) to distinguish somatic and germline mutations using next-generation sequencing data

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Zoological Research 2021年第2期42卷 246-249页

作者： Yu-Fang mao Xi-guo Yuan Yu-Peng Cun School of Computer Science and Technology Xidian UniversityXi'anShaanxi 710071China iFlora Bioinformatics Center Germplasm Bank of Wild SpeciesKunming Institute of BotanyChinese Academy of SciencesKunmingYunnan 650201China

DEAR EDITOR,Somatic mutations are a large category of genetic variations,which play an essential role in tumorigenesis. Detection of somatic single nucleotide variants(SNVs) could facilitate downstream analysis of tumorigenesis. Many computational methods have been developed to detect SNVs, but most require normal matched samples to differentiate somatic SNVs from the normal state, which can be difficult to obtain.

关键词： data A novel machine learning approach svm Somatic

Local Government Debt Governance in China in the Past 70 Years:Review and Prospect

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China Finance and Economic Review 2019年第4期8卷 49-65页

作者： Yuqing guo Jie mao Department of Finance School of EconomicsNankai UniversityChina Department of Finance and Taxation University of International Business and EconomicsChina

This paper gives an overview of local government debt governance in China in the past 70 years and looks ahead to its strategic prospect in the new era based on a theoretical analysis of debt characteristics in the transition *** this purpose,we divide the past 70 years into fi ve stages:planned regulation,exploration,wide fl uctuations,pilot expansion,and comprehensive transformation,which is a prudent trade-off process between“incentive”and“control”objectives to deal with the strategic fi nancing game of local governments and striving to make debt governance regulated,transparent,and *** the historic changes in social and economic development concepts in the new era,the debt governance mode needs to shift from the conventional GDP-based quantitative governance to performance governance which is oriented towards long-term benefi ts,with a focus on improving the quality and efficiency of debt *** by the new development concepts,debt governance in the new era can continue to unleash reform dividends and promote strategic adjustments at the institutional,structural,mode,and technical levels in an orderly manner,so as to lay a solid foundation for ensuring the security of fi scal operations and the sustainability of local government debt fi nancing.

关键词： local government debt governance mode debt fi nancing