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Phosphotungstic acid immobilized on amino-functionalized TS-1 zeolite as a solid acid catalyst for the synthesis of tributyl citrate

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Chinese Journal of Chemical Engineering 2024年第6期70卷 199-210页

作者： Pei Li Bianfang Shi Junyao Shen ran cui Wenze Guo Ling Zhao Zhenhao Xi State Key Laboratory of Chemical Engineering East China University of Science and TechnologyShanghai 200237China Key Laboratory of Smart Manufacturing in Energy Chemical Process Ministry of EducationEast China University of Science and TechnologyShanghai 200237China

The amino-functionalization of TS-1 zeolite followed by immobilization of phosphotungstic acid(HPW)was presented to prepare a strong solid acid catalyst for the synthesis of bio-based tributyl citrate from the esterification of citric acid and n-butanol.γ-Aminopropyltriethoxysilane(APTES)was first grafted on the TS-1 zeolite via the condensation reactions with surface hydroxyl groups,and subsequently the HPW was immobilized via the reaction between the amino groups and the protons from HPW-forming strong ionic *** Keggin structure of HPW and MFI topology of TS-1 zeolite were well maintained after the *** amino-functionalization generated abundant uniformly distributed active sites on TS-1 for HPW immobilization,which promoted the dispersity,abundance,as well as the stability of the acid *** tetrahedrally coordinated framework titanium and non-framework titania behaved as weak Lewis acid sites,and the protons from the immobilized HPW acted as the moderate or strong Brønsted acid *** optimized TBC yield of 96.2%(mol)with a conversion of-COOH of 98.1%(mol)was achieved at 150℃for 6 h over the HPW immobilized on amino-functionalized *** catalyst exhibited good stability after four consecutive reaction runs,where the activity leveled off at still a relatively high level after somewhat deactivation possibly caused by the leaching of a small portion of weakly anchored APTES or HPW.

关键词： Amino-functionalization Phosphotungstic acid TS-1 zeolite Esterification Tributyl citrate

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Imaging-guided precision oncotherapy mediated by nanoprobes: From seeing to curing

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Chinese Chemical Letters 2024年第1期35卷 116-128页

作者： Jie Zheng Shi-Hui Chen Biao Huang Mingxi Zhang Quan Yuan ran cui College of Chemistry and Molecular Sciences Wuhan UniversityWuhan 430072China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Hubei Jiangxia Laboratory Wuhan 430200China

Malignant tumors are the main diseases threatening human life. Using precise theranostics to diagnose and cure tumors has emerged as a new method to improve patient survival. Based on the current development of precise tumor imaging, image-guided tumor therapy has received widespread attention because it is beneficial for developing precise treatment of tumors, has the potential to improve the efficacy of tumor therapy and reduce the incidence of adverse side effects. Nanoprobes, which are nanomaterial functionalized with specific biomolecules, have intrigued intense interest due to their great potential in monitoring biorecognition and biodetection evens. Benefiting from the unique advantages of nanomaterials, including the easy surface functionalization, the unique imaging performances, and the high drug loading capacity, nanoprobes have become a powerful tool to simultaneously realize tumor precise imaging, diagnosis, and therapy. This review introduces the non-invasive tumor precise imaging and highlights the recent advances of image-guided oncotherapy mediated by nanoprobes in anti-tumor drug delivery, tumor precise surgical navigation, chemodynamic therapy, and phototherapy. Finally, a perspective on the challenge and future direction of nanoprobes in imaging-guided tumor theranostics is also discussed.

关键词： Precise theranostics Imaging-guided Tumor surgical navigation Chemodynamic therapy Phototherapy Nanoprobes

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资源配置视角下绿色金融对绿色技术创新的影响研究

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经济问题 2024年第4期 52-59页

作者：潘明清谢清华崔冉宿迁学院经济与管理学院江苏宿迁223800 湛江科技学院粤西数智会计发展研究中心广东湛江524086 广西财经学院金融与保险学院广西南宁530003

基于资源配置视角,探究绿色金融与绿色技术创新的影响效应和内在机制。研究发现:绿色金融有助于增强绿色技术创新能力,且该促进效应具有显著的区域异质性;从作用渠道看,绿色金融可以通过研发资本和研发人才两条传导机制增强绿色技术创... 详细信息

基于资源配置视角,探究绿色金融与绿色技术创新的影响效应和内在机制。研究发现:绿色金融有助于增强绿色技术创新能力,且该促进效应具有显著的区域异质性;从作用渠道看,绿色金融可以通过研发资本和研发人才两条传导机制增强绿色技术创新能力;从异质性效应看,劳动力与资本资源错配严重制约了绿色金融对绿色技术创新能力的促进作用,尤其是东部地区的抑制效应更强。进一步讨论发现,绿色金融、资源配置对绿色技术创新具有显著正向空间效应。研究结论丰富了绿色金融理论体系,为我国大力发展绿色金融,促进绿色技术创新提供理论和经验依据。

关键词：绿色金融资源错配绿色技术创新研发资本研发人才

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新工科背景下“信号与系统”课程思政建设改进思考

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电脑与信息技术 2024年第1期32卷 137-140页

作者：崔冉吴静然中国矿业大学徐海学院江苏徐州221008

立德树人是高校教学的基本要求,是教书育人的中心环节,教师要围绕这个目标来教,学生要围绕这个目标来学。与传统的高校工科教育相比,新工科所具有的代表性标志之一是以立德树人为导向,这就要求高校要实现课程知识教学与价值引导的有机统... 详细信息

立德树人是高校教学的基本要求,是教书育人的中心环节,教师要围绕这个目标来教,学生要围绕这个目标来学。与传统的高校工科教育相比,新工科所具有的代表性标志之一是以立德树人为导向,这就要求高校要实现课程知识教学与价值引导的有机统一,在专业课程中融合思政元素,发挥专业课程的德育功能,满足学生成长的发展需求。“信号与系统”课程是电子信息类专业基础课程,也是专业核心课程。课程具有“原理深刻、方法多样、应用广泛”的特点,课程内容包含了大量的数学公式及推导,具有较强的数学逻辑,蕴含的思政元素不易挖掘,造成课程内容与思政点结合较为生硬,存在课程内容与思政点机械叠加的现象。为解决上述问题,文章提出了针对“信号与系统”课程的课程思政建设改进思考,以期增强教师思想政治意识,深化挖掘思政元素,构造协同育人大格局,提升育人效果。

关键词：立德树人新工科信号与系统课程思政

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天山造山带壳幔速度结构及深部构造过程综述

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地球与行星物理论评（中英文） 2024年第4期55卷 381-398页

作者：崔冉崔清辉周元泽中国科学院大学地球与行星科学学院中国科学院计算地球动力学重点实验室北京100049 中国地震局地震预测研究所地震预测重点实验室北京100036

天山作为陆内造山带的典型地区,其深部构造一直是国内外地学界关注的热点问题.天山造山带下方速度异常结构的分布特征,是天山造山带深部构造过程响应的深刻体现,对深入理解其活化机制具有重要的指示作用.本文系统总结了天山不同区段的... 详细信息

天山作为陆内造山带的典型地区,其深部构造一直是国内外地学界关注的热点问题.天山造山带下方速度异常结构的分布特征,是天山造山带深部构造过程响应的深刻体现,对深入理解其活化机制具有重要的指示作用.本文系统总结了天山不同区段的壳幔速度异常结构研究结果,讨论了天山造山带下方不同速度异常结构的形成机制以及天山隆升变形的动力学演化过程.天山造山带不同区段的层析成像结果以及接收函数图像等多种地震学探测与GPS观测研究成果显示,区域速度异常结构分布特征与天山造山带及周边地区的地质构造特点、动力学演化过程具有相关性:天山造山带下方高速异常结构的倾斜方向、形态、位置,凸显了天山地区独特的陆内俯冲机制;不同区域的低速异常结构表明,存在软流圈热物质上涌形成的小地幔柱或小尺度地幔对流,以及岩浆底侵作用导致壳内物质发生部分熔融.相关研究结果对进一步理解天山陆内俯冲、地壳缩短变形、岩石圈拆沉和软流圈热物质上涌等动力学过程具有重要意义,并对深入研究天山地区地震活动性分布规律提供有利的参考依据.

关键词：天山壳幔速度异常陆内俯冲部分熔融深部构造过程

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罗非鱼鱼茶协作生产模式试验

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科学养鱼 2024年第1期 33-34页

作者：崔冉王赛赛张欣北京市农林科学研究院水产研究所北京100071

2017年笔者协助白洋淀当地企业建成设计罗非鱼的高标准流水养殖槽,通过荷花池净化养殖水,形成出产优质罗非鱼和荷叶茶的循环养殖绿色产业,取得较好的效益,现总结如下。一、材料与方法1.循环流水养殖系统的工作流程及原理利用1.7%的水面... 详细信息

2017年笔者协助白洋淀当地企业建成设计罗非鱼的高标准流水养殖槽,通过荷花池净化养殖水,形成出产优质罗非鱼和荷叶茶的循环养殖绿色产业,取得较好的效益,现总结如下。一、材料与方法1.循环流水养殖系统的工作流程及原理利用1.7%的水面建设具有气提推水充气和集排污设备的水槽作为罗非鱼高密度养殖区,并对剩余98.3%的水面进行改造,作为净化区。

关键词：高密度养殖流水养殖模式试验绿色产业荷花池罗非鱼净化区荷叶茶

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基于OBE理念的“嵌入式系统与应用”课程改革与实践

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科教导刊 2024年第7期 93-95页

作者：吴静然崔冉中国矿业大学徐海学院江苏徐州221008

“嵌入式系统与应用”作为信息工程专业的专业必修课程,是高素质复合型新工科人才培养的重要课程。文章以“嵌入式系统与应用”课程存在的问题为出发点,以OBE理念为指导思想,考虑学生的学习特点,从明确教学目标、优化教学体系、调整教... 详细信息

“嵌入式系统与应用”作为信息工程专业的专业必修课程,是高素质复合型新工科人才培养的重要课程。文章以“嵌入式系统与应用”课程存在的问题为出发点,以OBE理念为指导思想,考虑学生的学习特点,从明确教学目标、优化教学体系、调整教学内容、开展线上线下混合教学、实践教学和量化教学评价等方面探讨了该课程的改革举措,有效地激发了学生的学习兴趣,为培养高素质、复合型新工科人才奠定良好的基础。

关键词：嵌入式系统与应用信息工程新工科人才 OBE理念

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Ultra-bright near-infrared-IIb emitting Zn-doped Ag_(2)Te quantum dots for noninvasive monitoring of traumatic brain injury

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Nano Research 2023年第2期16卷 2719-2727页

作者： Yifei Zhou Biao Huang Shi-Hui Chen Shu-Lin Liu Mingxi Zhang ran cui College of Chemistry and Molecular Sciences Wuhan UniversityWuhan 430072China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China State Key Laboratory of Medicinal Chemical Biology Tianjin Key Laboratory of Biosensing and Molecular RecognitionResearch Centre for Analytical SciencesCollege of ChemistryNankai UniversityTianjin 300071China

The long-wavelength region of the near-infrared-IIb(NIR-IIb,1,500–1,700 nm)imaging window has become an ideal window for in vivo imaging due to the suppressed photon scattering and near-zero autofluorescence of biological ***,it is necessary to develop fluorescent probes with excellent fluorescence performance and stability for NIR-IIb fluorescence *** this work,zinc-doped silver telluride quantum dots(Zn:Ag_(2)Te QDs)with bright fluorescence in the NIR-IIb window were *** introduction of Zn dopants inhibited crystal defects and reduced non-radiative ***,the quantum yield and fluorescence lifetime of Zn:Ag_(2)Te QDs were significantly *** addition,Zn-doping increased the number of ligands on the surface of QDs,thus enhancing the colloidal stability of Zn:Ag_(2)Te ***,the PEGylated Zn:Ag_(2)Te QDs with high absolute quantum yield realized noninvasive imaging of cerebral vascular of mouse with high resolution able to distinguish blood capillary,which could be utilized to monitor the brain condition of mice after traumatic brain injury.

关键词： near-infrared-IIb(NIR-IIb)window silver telluride quantum dots fluorescence in vivo imaging

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Emodin attenuates inflammation and demyelination in experimental autoimmune encephalomyelitis

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Neural Regeneration Research 2023年第7期18卷 1535-1541页

作者： Yue-ran cui Zhong-Qi Bu Hai-Yang Yu Li-Li Yan Juan Feng Department of Neurology Shengjing Hospital of China Medical UniversityShenyangLiaoning ProvinceChina

Emodin,a substance extracted from herbs such as rhubarb,has a protective effect on the central nervous ***,the potential therapeutic effect of emodin in the context of multiple sclerosis remains *** this study,a rat model of experimental autoimmune encephalomyelitis was established by immune induction to simulate multiple sclerosis,and the rats were intraperitoneally injected with emodin(20 mg/kg/d)from the day of immune induction until they were *** this model,the nucleotide-binding domain-like receptor family pyrin domain containing 3(NLRP3)inflammasome and the microglia exacerbated neuroinflammation,playing an important role in the development of multiple *** addition,silent information regulator of transcription 1(SIRT1)/peroxisome proliferator-activated receptor-alpha coactivator(PGC-1α)was found to inhibit activation of the NLRP3 inflammasome,and SIRT1 activation reduced disease severity in experimental autoimmune ***,treatment with emodin decreased body weight loss and neurobehavioral deficits,alleviated inflammatory cell infiltration and demyelination,reduced the expression of inflammatory cytokines,inhibited microglial aggregation and activation,decreased the levels of NLRP3 signaling pathway molecules,and increased the expression of SIRT1 and PGC-1α.These findings suggest that emodin improves the symptoms of experimental autoimmune encephalomyelitis,possibly through regulating the SIRT1/PGC-1α/NLRP3 signaling pathway and inhibiting microglial *** findings provide experimental evidence for treatment of multiple sclerosis with emodin,enlarging the scope of clinical application for emodin.

关键词： demyelination emodin experimental autoimmune encephalomyelitis microglia multiple sclerosis neuroinflammation NLRP3 inflammasome PGC-1α pyroptosis SIRT1

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Reduction of dinitrogen to ammonia on doped three-atom clusters Nb2M（M=Sc to Cu & Y to Ag）

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Rare Metals 2024年第8期43卷 3810-3818页

作者： ran Cheng Chao-Nan cui Zhi-Xun Luo Beijing National Laboratory for Molecular Science (BNLMS) State Key Laboratory for Structural Chemistry of Unstable and Stable SpeciesInstitute of ChemistryChinese Academy of Sciences School of Chemical Science University of Chinese Academy of Sciences

Catalytic reduction of dinitrogen to ammonia under mild conditions remains an attractive topic for the purpose of lowering energy ***-atom metal clusters have been proved an ideal model to explore highly efficient catalysts taking advantage of unique geometric/electronic structures and cooperative active *** a study of N2 activation and reduction on seventeen bimetallic Nb2M（M=Sc to Cu,and Y to Ag） clusters was *** key processes for ammonia fixation（namely nitrogen activation,hydrogenation,and ammonia desorption） are fully studied,and three preferred systems（Nb2Ni,Nb2Rh and Nb2Pd） are highlighted with outstanding catalytic *** d-σ and d-π*orbital hybridizations between these metal clusters and N2were demonstrated and the internal association with the N≡N bond activation was *** examining the ammonia synthesis on four chosen Nb2M clusters（M=Fe,Ni,Rh and Pd）,it can be elucidated that the distal pathway is more favorable than the alternative pathway in these *** work not only clarifies the N2reduction on the bimetallic Nb2M clusters,but also guides efficient bimetallic catalyst design.

关键词： Three-atom cluster catalysis Three-criteria strategy Nitrogen fixation Ammonia synthesis Theoretical calculations

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