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Polymer hydrogel confined palladium nanoparticles as recyclable catalysts for Suzuki and Heck cross-coupling reactions

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Chinese Chemical Letters 2020年第6期31卷 1630-1634页

作者： kan zhan.Ping Lu Jian Dong Xu Hou School of Chemistry and Chemical Engineering Shaoxing UniversityShaoxing 312000China School of Chemistry and Chemical Engineering Xiamen UniversityXiamen 361005China

Reusable palladium nanoparticles highly dispersed in porous and hydrophilic interpenetrating polymer networks(IPN),i.e.,Pd@IPN hybrid gels,are employed for catalysis of Suzuki and Heck coupling *** yields are obtained with high turnover frequencies when the reactions are run with very low *** use of IPN gives better recyclability than that of crosslinked polyvinyl alcohol *** polymer networks allow the reactants to have easy access to the Pd *** catalysts combine high activity with the reusability offered by the heterogeneous system,without the need for strong coordination or chelating ligands.

关键词： Nanoparticle Catalysis Hydrogels Palladium Water

中山大学科技期刊出版史略(1866—2024)

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中山大学学报（自然科学版）（中英文） 2025年第1期64卷 1-27页

作者：张冰詹拔群中山大学学报编辑部广东广州510275 中山大学期刊管理中心广东广州510275

本文力图较为完整地展现中山大学100多年的科技期刊出版历史全貌,在明晰中山大学办学源流的基础上将其前身各校的科技期刊出版情况纳入梳理,整理统计出中山大学及其前身各校在正式建校前(1866—1923年)出版科技期刊25种、建校后的民国时... 详细信息

本文力图较为完整地展现中山大学100多年的科技期刊出版历史全貌,在明晰中山大学办学源流的基础上将其前身各校的科技期刊出版情况纳入梳理,整理统计出中山大学及其前身各校在正式建校前(1866—1923年)出版科技期刊25种、建校后的民国时期(1924—1948年)出版科技期刊87种,共和国时期(1949—2024年)出版科技期刊60种,共计172种,并对代表性刊物进行简要介绍。中山大学的科技期刊出版以医学类期刊的贡献最为突出,其影响一直延续至今。这些科技期刊从科研学术角度记录了中山大学的学科发展历史,同时为中国近代科学技术的传播和发展作出了重要的贡献。

关键词：中山大学科技期刊出版史校史

守正创新勇担时代使命——中山大学学报自然科学版创刊70周年(1955—2024)

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中山大学学报（自然科学版）（中英文） 2025年第1期64卷 28-39页

作者：詹拔群张冰中山大学期刊管理中心广东广州510275 中山大学学报编辑部广东广州510275

本文介绍《中山大学学报(自然科学版中英文)》的创刊与源流,分为创刊初期(1955—1966)、首批复刊(1973—1978)、改革开放后(1979—2012)和迈进新时代(2013—2023)四个时间段回顾该刊70年的办刊历程,着重介绍了在各个时期为该刊的发展壮... 详细信息

本文介绍《中山大学学报(自然科学版中英文)》的创刊与源流,分为创刊初期(1955—1966)、首批复刊(1973—1978)、改革开放后(1979—2012)和迈进新时代(2013—2023)四个时间段回顾该刊70年的办刊历程,着重介绍了在各个时期为该刊的发展壮大作出了重要贡献的中山大学学者及其发表的成果,展现中山大学与该刊在推动国家科学技术发展进步方面所作出的贡献。新时代以来,自然科学版致力于内涵式高质量发展取得了成效。该刊以建设世界一流科技期刊为目标,采取了策划组织大型专题专辑、变更期刊文种为中英文、实施稿件质量提升计划、不断完善数字化出版等重要办刊举措,大力推进国际化高水平科技期刊建设。

关键词：科技期刊中山大学学报自然科学版重要作者数字化出版

Pt/CNT Micro-Nanorobots Driven by Glucose Catalytic Decomposition

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Cyborg and Bionic Systems 2021年第1期2021卷 246-253页

作者： Hao Wang Jiacheng kan Xin zhan. Chenyi Gu zhan.Yang Robotics and Microsystems Center College of Mechanical and Electric EngineeringSoochow UniversityChina

Swimming micro-nanorobots have attracted researchers’interest in potential medical applications on target therapy,biosensor,drug carrier,and *** present,the experimental setting of the swimming micro-nanorobots was mainly studied in pure water or H_(2)O_(2) *** paper presents a micro-nanorobot that applied glucose in human body fluid as driving *** on the catalytic properties of the anode and cathode materials of the glucose fuel cell,platinum(Pt)and carbon nanotube(CNT)were selected as the anode and cathode materials,respectively,for the *** innovative design adopted the method of template electrochemical and chemical vapor deposition to manufacture the Pt/CNT micro-nanorobot *** the scanning electron microscope(SEM)and transmission electron microscope(TEM)were employed to observe the morphology of the sample,and its elements were analyzed by energy-dispersive X-ray spectroscopy(EDX).Through a large number of experiments in a glucose solution and according to Stoker’s law of viscous force and Newton’s second law,we calculated the driving force of the fabricated *** was concluded that the structure of the Pt/CNT micronanorobot satisfied the required characteristics of both biocompatibility and motion.

关键词： Pt/C driving robot

An NIR-Ⅱ-emissive Ru(Ⅱ) metallacycle for efficient and safe immunotherapy

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Science China Chemistry 2025年第1期 5-7页

作者： Chonglu Li Jianbo zhan.Biao Dong Institute of Health Inspection and Testing Hubei Provincial Center for Disease Control and Prevention State Key Laboratory on Integrated Optoelectronics College of Electronic Science and Engineering Jilin University

Immunotherapy, as a groundbreaking cancer treatment, has gained considerable attention for its utilization of the body’s immune system to combat tumors [1]. This therapy induces tumor cell apoptosis, triggering a sustained anti-tumor immune response and effectively preventing tumor recurrence and metastasis [2]. The fundamental principle lies in inducing tumor cell death through specific treatment modalities, leading to the release of a cascade of signaling molecules and antigens, thereby mobilizing the immune system to actively identify and attack tumor cells [3].

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Based on non-targeted metabolomics for differential components screening of Rosae Chinensis Flos and Rosae Rugosae Flos and their quality evaluation

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Traditional Medicine Research 2025年第2期10卷 1-15页

作者： Xu Liang Ni-Hui zhan. Zhi-Lai zhan.Guang-Lu Chang Yan Gao Xia Li Wen-Yuan Gao School of Pharmaceutical Science and Technology Faculty of MedicineTianjin UniversityTianjin 300193China State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs China Academy of Chinese Medical SciencesBeijing 100700China Key Laboratory of Modern Chinese Medicine Resources Research Enterprises Tianjin 300402China

Background:Rosa chinensis *** Rosa rugosa *** not only of ornamental value,but also edible flowers and the flower buds have been listed in the Chinese Pharmacopoeia as traditional *** two plants have some differences in efficacy,but the flower buds are easily confused for similar *** addition,large-scale cultivation of ornamental rose flowers may lead to a decrease in the effective components of medicinal ***,it is necessary to study the chemical composition and make quality evaluation of Rosae Chinensis Flos(Yueji)and Rosae Rugosae Flos(Meigui).Methods:In this study,40 batches of samples including Meigui and Yueji from different regions in China were collected to establish high-performance liquid chromatography ***,the fingerprints data was analyzed using principal component analysis,hierarchical cluster analysis,and partial least squares discriminant analysis analysis chemometrics to obtain information on intergroup differences,and non-targeted metabolomic techniques were applied to identify and compare chemical compositions of samples which were chosen from groups with large *** compounds were screened by orthogonal partial least-squares discriminant analysis and S-plot,and finally multi-component quantification was performed to comprehensively evaluate the quality of Yueji and ***:The similarity between the fingerprints of 40 batches roses and the reference print R was 0.73 to 0.93,indicating that there were similarities and differences between the *** principal component analysis and hierarchical cluster analysis of fingerprints data,the samples from different origins and varieties were intuitively divided into four *** least-squares discriminant analysis analysis showed that Meigui and Yueji cluster into two categories and the model was reliable.A total of 89 compounds were identified by high resolution mass spectrometry,mainly were flavonoids and flavon

关键词： Rosa chinensis Jacq. Rosa rugosa Thunb. metabolomics chemometrics multiple component quantification quality evaluation

ATRP-Template Dispersion Polymerization of Methacrylic Acid/PVP

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Chinese Journal of Polymer Science 2014年第4期32卷 476-487页

作者： Cheng-cheng Yang Dan Meng kan zhan.Yu-lu Chen Hui zhan. Min Wu 倪恨美 School of Chemistry and Chemical Engineering Southeast University

ATRP-template dispersion polymerization of methacrylic acid （MAA） on the template of polyvinyl pyrrolidone （PVP K-30） was carried out in the aqueous solution by using methyl 2-bromopropionate （MBP）/CuC1/2,2＇-bipyridine （bpy） as the initiation system. The scanning electron microscopy （SEM）, dynamic light scattering （DLS） and gel permeation chromatography （GPC） were employed for evaluating the results of polymerization. As a result, the minimonomer droplets formed due to the H-bond interaction of PVP-MAA. The stability of droplets was dependent on pH and the concentrations of both PVP and MAA. When pH 〈 2, the coagulum of PVP-MAA formed, whereas when pH 〉 4.5, the droplets were not observable by DLS. In order to prepare the stable latex, the concentration of PVP should be lower than 9 wt%, whilst the concentration of MAA should be lower than 5.5 wt%. The optimum condition was pH 2.4, PVP 4.76 wt% and MAA 5 wt%, by which the stable latex of ca. 50 nm nanoparticles of PMAA/PVP was prepared by ATRP polymerization and simultaneously the molar mass of PVP was duplicated by PMAA according to GPC diagrams. In contrast, by using AIBN, KPS and KPS-Na2SO3 redox initiation system, the coagulum accompanying with the larger molar mass of PMAA was obtained, irrespective of pH and concentrations of PVP and MAA.

关键词： Nanoparticle ATRP Dispersion polymerization Template polymerization Hydrogel.

Investigation of Edge Localized Fluctuation in KT-5C Tokamak

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Chinese Physics Letters 1996年第9期13卷 685-688页

作者： ZHAI kan WEN Yi-zhi YU Chang-xuan LIU Wan-dong WANG Chao ZHUANG Ge XU Zhi-zhan Department of Modern Physics University of Science and Technology of ChinaHefei 230027 Shanghai Institute of Optics and Fine Mechanics Chinese Academy of SciencesShanghai 201800

It is found on KT-5C tokamak that an edge fluctuation mode can be excited by using a pair of floating Langmuir *** mode is propagating along the magnetic field with its amplitude decreasing drastically when it is off the magnetic field *** feedback experiments show that the broadband edge turbulence can be reduced or enhanced depending upon the phase shift of the feedback network.

关键词： tokamak mode turbulence

Cyclin A-Cdk2 Phosphorylates BH3 only Protein Bad in vitro and in vivo

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Chemical Research in Chinese Universities 2007年第5期23卷 567-570页

作者： HE kan CHEN Yue LI Jing-hua zhan.Zhuo WU Yong-ge KONG Wei JIN Ying-hua Vaccine Research Center College of Life Science Key Laboratory for Supramolecular Structure ＆ Materials of Ministry of Education School of Public Health Jilin University Changchun 130012 P. R. China

Increasing evidence suggests that Cyclin A-Cdk2 activity is required in the apoptosis process induced by various *** determine a specific substrate of Cyclin A-Cdk2 for apoptosis,in this study,we carried out an in vitro kinase assay using immunoprecipitated complex Cyclin A-Cdk2 as an enzyme source,and recombinant protein GST-Bad as a *** study showed that Bad was clearly phosphorylated by Cyclin A-Cdk2 in *** examine whether protein Bad can also be phosphorylated by Cyclin A-Cdk2 kinase in vivo,we transiently overexpressed protein Bad with Cyclin A or Cdk2-dn,a dominant negative version of Cdk2,in Hela cells and determined the phosphorylation status of protein *** test showed that protein Bad was clearly phosphorylated in Cyclin A overexpressed cells,but not in Cdk2-dn or mock ***,etoposide also caused the phosphorylation of endogenetic *** conclusion,here we provide first time evidence that protein Bad can be a substrate of Cyclin A-Cdk2 apoptosis for in vitro and in vivo.

关键词： Apoptosis Bad Cyclin A-Cdk2 Phosphorylation Substrate