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Controlled Synthesis of Metal-Nanoparticles Decorated Block Copolymer Hybrid Particles via Emulsion Confined Self-assembly and Their Catalytic Applications

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Chinese Journal of Chemistry 2024年第8期42卷 835-840页

作者： Xiaohua Chang qunli Yu Dan Ji Yutian Zhu College of Material Chemistry and Chemical EngineeringKey Laboratory of Organosilicon Chemistry and Material TechnologyMinistry of EducationHangzhou Normal UniversityHangzhouZhejiang311121 China

Comprehensive Summary Metal nanoparticles(NPs)decorated block copolymer(BCP)hybrid nanoparticles have attracted enormous attention for their actual value in catalysis,medical therapy,and *** confined assembly of BCPs within evaporative emulsion droplet is verified as an effective method to provide polymeric scaffolds to load metal ***,to date,it remains challenging to generate different types of metal NPs decorated BCP hybrid ***,we employed the emulsion confined self-assembly of poly(styrene-b-2-vinylpyridine)(PS-b-P2VP)and the followed seed-mediated growth of Au and palladium(Pd)NPs onto well-defined BCP particles to design a series of Au/Pd decorated BCP hybrid nanoparticles,which exhibited excellent catalytic activity for the reduction of 4-nitrophenol to 4-aminophenol with the reductant of *** work may inspire more researchers to investigate the selective decoration of different metal NPs onto the polymeric scaffolds,broadening the potential applications of the inorganic/organic hybrid nanoparticles.

关键词： Block copolymers Emulsion confined self-assembly Hybrid nanoparticles Catalytic activity Recyclability

Two-Layer Attention Feature Pyramid Network for Small Object Detection

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Computer Modeling in Engineering & Sciences 2024年第10期141卷 713-731页

作者： Sheng Xiang Junhao Ma qunli Shang Xianbao Wang Defu Chen College of Information Engineering Zhejiang University of TechnologyHangzhou310023China Binjiang Cyberspace Security Institute of ZJUT Hangzhou310056China

Effective small object detection is crucial in various applications including urban intelligent transportation and pedestrian ***,small objects are difficult to detect accurately because they contain less *** current methods,particularly those based on Feature Pyramid Network(FPN),address this challenge by leveraging multi-scale feature ***,existing FPN-based methods often suffer from inadequate feature fusion due to varying resolutions across different layers,leading to suboptimal small object *** address this problem,we propose the Two-layerAttention Feature Pyramid Network(TA-FPN),featuring two key modules:the Two-layer Attention Module(TAM)and the Small Object Detail Enhancement Module(SODEM).TAM uses the attention module to make the network more focused on the semantic information of the object and fuse it to the lower layer,so that each layer contains similar semantic information,to alleviate the problem of small object information being submerged due to semantic gaps between different *** the same time,SODEM is introduced to strengthen the local features of the object,suppress background noise,enhance the information details of the small object,and fuse the enhanced features to other feature layers to ensure that each layer is rich in small object information,to improve small object detection *** extensive experiments on challenging datasets such as Microsoft Common Objects inContext(MSCOCO)and Pattern Analysis Statistical Modelling and Computational Learning,Visual Object Classes(PASCAL VOC)demonstrate the validity of the *** results show a significant improvement in small object detection accuracy compared to state-of-theart detectors.

关键词： Small object detection two-layer attention module small object detail enhancement module feature pyramid network

Cross-linkedα-amylase aggregates on Fe3O4 magnetic nanoparticles modified with polydopamine/polyethyleneimine for efficient hydrolysis of starch

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Particuology 2024年第7期90卷 98-105页

作者： Jiandong Cui Xiuming Tang Qingqing Ma Yuyan Chang qunli Zhang Shiru Jia State Key Laboratory of Food Nutrition and Safety Laboratory of Industrial Fermentation MicrobiologyMinistry of EducationTianjin University of Science and TechnologyTianjin 300457China Key Laboratory of Biomass Chemical Engineering of Ministry of Education Zhejiang UniversityHangzhou 310027China

In this workα-amylase was immobilized on magnetic Fe3O4 nanoparticles with polyethylenimine(PEI)/polydopamine(PDA)coating or 3-aminopropyl triethoxysilane(APTES)for the first time via adsorption–precipitation–*** with the freeα-amylase,the resultant magnetic cross-linkedα-amylase aggregates(PEI/PDA-M-CLEAs and N-M-CLEAs)exhibited excellent thermal and storage stability as well as pH *** storage at 25°C for 60 days,freeα-amylase only retained 60%of its initial activity,while PEI/PDA-M-CLEAs and N-M-CLEAs retained 80%and 78%of their initial activities,***,N-M-CLEAs and PEI/PDA-M-CLEAs showed good *** 6 repeated uses,PEI/PDA-M-CLEAs and N-M-CLEAs still maintained 65%and 62%of their initial activities,***,PEI/PDA-M-CLEAs and N-M-CLEAs exhibited higher starch hydrolysis efficiency than freeα-*** maximum dextrose equivalent(DE)values of starch hydrolysis by PEI/PDA-M-CLEAs and N-M-CLEAs reached 29.24%and 28.79%within 90 min,***,the maximum DE values of starch hydrolysis by the freeα-amylase was only 27.89%even in 150 *** magnetic cross-linkedα-amylase aggregates could be introduced as effective biocatalyst for industrial applications in production of maltose syrups.

关键词： α-amylase Magnetic nanoparticles Functional modification Magnetic cross-linked enzyme aggregates Hydrolysis of starch

Advancing RAS inhibition: broad-spectrum targeting and tumor-selective activity of RMC-7977 in cancer therapy

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Science China Life Sciences 2024年

作者： qunli Xiong Yaguang Zhang Laboratory of Gastrointestinal Tumor Epigenetics and Genomics Frontiers Science Center for Disease-related Molecular Network West China Hospital Sichuan University Abdominal Oncology Ward Cancer Center West China Hospital Sichuan University

In cancer, the proto-oncogene RAS frequently mutates at codons 12, 13, and61, with these mutations propelling tumor progression by locking RAS proteins in their active, GTP-bound state(Pylayeva-Gupta et al., 2011; Yang et al.,2023). Despite the recent approval of small molecule inhibitors targeting KRAS(G12C) for non-small cell lung cancer(de Langen et al., 2023), a broadspectrum small molecule inhibitors for multiple RAS mutations have remained elusive.

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单元教学设计的程序探讨

中国电化教育 2024年第1期 91-103页

作者：盛群力浙江大学教育学院浙江杭州310058

依据当代教学设计与学习科学研究,可以将单元教学设计程序确定为6+1步骤,这就是明类型、划水平、定任务、写目标、编量规、优结构和配评估。“明类型”明确学生要学到什么,“划水平”规定学生要学到什么程度,“定任务”则指导教师如何... 详细信息

依据当代教学设计与学习科学研究,可以将单元教学设计程序确定为6+1步骤,这就是明类型、划水平、定任务、写目标、编量规、优结构和配评估。“明类型”明确学生要学到什么,“划水平”规定学生要学到什么程度,“定任务”则指导教师如何开展教学帮助学生学到要学的东西,达到预期的掌握水平。“写目标”要求教师按照内部心理模式和外部行为表现相统一的方式来编写教学目标,“编量规”是依据教学目标来细化具体的评估要求。“优结构”是指通过教师创设学习环境、优化教学结构和运用教学方法来帮助学生达成学习目标。“配评估”则要依据类型、水平、任务、目标、量规和结构的要求,具体确定评估的方式和特征,以评促教,以评促学。单元教学设计程序有利于教学取得减负增效赋能的效果。

关键词：单元教学教学设计教学设计程序课堂教学效能

可再生能源配额制下风光储联合参与现货市场的交易决策

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中国电力 2024年第4期57卷 77-88页

作者：武群丽朱新宇华北电力大学经济管理系河北保定071003

可再生能源配额制与现货市场建设的并行推进引起风电发电商、光伏发电商及储能电站(风光储)联合参与现货市场的交易决策发生变化。通过构建双层交易决策模型,对可再生能源配额制下风光储联合参与日前电能量及调频辅助服务市场的交易决... 详细信息

可再生能源配额制与现货市场建设的并行推进引起风电发电商、光伏发电商及储能电站(风光储)联合参与现货市场的交易决策发生变化。通过构建双层交易决策模型,对可再生能源配额制下风光储联合参与日前电能量及调频辅助服务市场的交易决策进行求解分析。模型上层以风光储总利润最大化为目标,同时考虑到风光储的内部调控,求解风光储最优交易策略;下层实现日前电能量和调频辅助服务市场的联合出清及绿色证书市场的清算。通过库恩-塔克(Karush-Kuhn-Tucker,KKT)条件、强对偶定理等方法将双层模型转换为混合整数线性规划问题进行求解。最后,通过算例验证了所提模型的有效性。结果表明:所提框架与模型能够优化风光储报量报价决策;可再生能源配额制的引入丰富了风光储的套利手段,风光储内部调控更加活跃;风光渗透率及配额制考核权重的变化对风光储的交易决策有重要影响。

关键词：风光储可再生能源配额制电能量市场调频辅助服务市场双层交易决策模型

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论新课型教学设计

远程教育杂志 2024年第3期42卷 23-31页

作者：盛群力滕梅芳浙江大学教育学院浙江杭州310058 浙江理想教育研究院浙江杭州311215

核心素养落地呼唤“新课型”,其理论阐述和实施模型本身就是学习科学与教学设计研究的有益探索,代表着利用教育科学技术改进课堂教学实践、提高效能的合理尝试。将新课型区分为“5+1”课型模式,探讨各种课型的含义以及彼此之间的关系,... 详细信息

核心素养落地呼唤“新课型”,其理论阐述和实施模型本身就是学习科学与教学设计研究的有益探索,代表着利用教育科学技术改进课堂教学实践、提高效能的合理尝试。将新课型区分为“5+1”课型模式,探讨各种课型的含义以及彼此之间的关系,发现新手、熟手和高手在解决问题中的差异,将事实、概念、规则、原理、策略和动力六种知识与了解、理解和应用三种水平组成一个矩阵,作为新课型教育目标分类框架。鉴于提高教学质量同教师上好概念课、规则课和策略课直接相关,进一步重点探讨概念教学策略,包括采用扶放有度原则、抓住重要概念、做好三种表征和实现三个阶段,落实“讲解”和“示例”基本方法等,以阐明新课型中概念教学的有效路径。

关键词：新课型概念规则策略概念教学

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整体性教学设计:多元模式解析与建构

中国电化教育 2024年第7期 35-45页

作者：钟丽佳盛群力杭州师范大学外国语学院浙江杭州311121 浙江大学教育学院浙江杭州310058

“整体性教学设计”是教学设计世纪转型中出现的一种思潮,也就是在整体论框架下考察“教学设计”。其特点是以整体任务为依托,指向现实生活和职业领域中的综合能力培养的有序教学设计,达到帮助学习者运用综合能去解决实际生活或工作中... 详细信息

“整体性教学设计”是教学设计世纪转型中出现的一种思潮,也就是在整体论框架下考察“教学设计”。其特点是以整体任务为依托,指向现实生活和职业领域中的综合能力培养的有序教学设计,达到帮助学习者运用综合能去解决实际生活或工作中遇到的问题。该文从问题设计、解决方法和设计过程等方面来解读当代国际四种整体性教学设计——综合学习设计模式、首要教学原理、认知学徒模式、基于目标场景模式的共通基础。我们希望从代表性的模式和理论中汲取基础的处方性要素,提出自己的整体性教学设计模式框架。

关键词：整体性教学设计现代教学设计模式整体性教学设计框架

花生壳黄酮-海藻酸钠/低酰基结冷胶复合膜在冷鲜猪肉保鲜中的应用

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食品与发酵工业 2024年第17期50卷 261-267页

作者：王聪余群力韩玲甘肃农业大学食品科学与工程学院甘肃兰州730070

为提高冷鲜猪肉的货架期,制备了不同质量分数(0.15%、0.30%、0.45%)的花生壳黄酮(peanut shell flavonoids,PSFs)-海藻酸钠/低酰基结冷胶(sodium alginate/low-acyl gellan gum,SA/LGG)复合膜,并将其用于改善冷鲜猪肉的贮藏品质。结果表明,PSFs增加了PSFs-SA/LGG复合膜分子间的相互作用;在显著提高复合膜的厚度、拉伸强度和阻隔性能(P<0.05)的同时,也降低了其透光率和断裂伸长率(P<0.05)。与对照组相比,PSFs-SA/LGG复合膜能有效抑制冷鲜猪肉贮藏期间菌落总数、pH值、总挥发性盐基氮值的上升,延缓脂质的氧化,将冷鲜猪肉的货架期延长至9 d。因此,PSFs-SA/LGG复合膜有望作为生物活性材料应用于食品保鲜领域。

关键词：冷鲜猪肉海藻酸钠低酰基结冷胶复合膜花生壳黄酮