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Preparation and Structure-Property Regulation Mechanism of Reversible Thermochromic Polydiacetylene

Chinese Journal of Polymer Science 2024年第8期42卷 1111-1121页

作者： Zhi-Qing ge Shuo Yan Zu-Xiong Pan Shan Lei Xuan-Zhi Mao Chu Zhao Mo-Zhen Wang Xue-wu ge Key Laboratory of Precision and Intelligent Chemistry Department of Polymer Science and EngineeringUniversity of Science and Technology of ChinaHefei 230026China Marshall Laboratory of Biomedical Engineering International Cancer CenterLaboratory of Evolutionary Theranostics(LET)School of Biomedical EngineeringShenzhen University Medical SchoolShenzhen UniversityShenzhen 518055China Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China

The thermochromic mechanism and the structure-property regulation principle of reversible thermochromic polydiacetylene(PDA)materials have always been a challenging *** this work,a series of diacetylene monomers(m-PCDA)containing phenyl and amide or carboxyl groups were synthesized from 10,12-pentacosadiynoic acid(PCDA)through the esterification or amidation *** effects of the number and the distribution of the functional groups in m-PCDA molecules on their solid-state polymerization capability,and the thermochromic mechanism of their corresponding polymers(m-PDA)were investigated and discussed in *** results show that the m-PCDA monomers containing both benzene ring and groups that can form hydrogen bonding interactions have strong intermolecular interaction,and are easy to carry out the solid phase polymerization under 254-nm UV irradiation to obtain the corresponding new thermochromic m-PDA *** thermochromic behavior of m-PDA depends on its melting *** initial color-change temperature(blue to red)is determined by the onset melting tem perature,and the temperature range in which reversible color recovery can be achieved by repeat heating-cooling treatment is determined by its melting *** to the proposed thermochromic mechanism of PDA,various new PDA materials with precise thermochromic temperatu res and reversible thermochromic temperature ra nges can be designed and synthesized through the appropriate introduction of benzene ring and groups that can form hydrogen bonding interactions into the molecular structure of linear diacetylene *** work provides a perspective to the precise molecular structure design and the property regulation of the reversible thermochromic PDA materials.

关键词： Polydiacetylene Thermochromism Hydrogen bonding Chemical modification

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Pure-high-even-order dispersion bound solitons complexes in ultra-fast fiber lasers

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Light(Science & Applications) 2024年第5期13卷 957-972页

作者： Ying Han Bo Gao Honglin Wen Chunyang Ma Jiayu Huo Yingying Li Luyao Zhou Qi Li ge wu Lie Liu College of Communication Engineering Jilin UniversityChangchun 130012China. Research Center of Circuits and Systems Peng Cheng LaboratoryShenzhen 518055China. International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education Institute of Microscale OptoelectronicsShenzhen UniversityShenzhen 518060China. College of Electronic Science and Engineering Jilin UniversityChangchun 130012China

Temporal solitons have been the focus of much research due to their fascinating physical *** solitons can form bound states,which are fundamentally crucial modes in fiber laser and present striking analogies with their matter molecules counterparts,which means they have potential applications in large-capacity transmission and alloptical information *** traditionally,second-order dispersion has been the dominant dispersion for conventional solitons,recent experimental and theoretical research has shown that pure-high-even-order dispersion(PHEOD)solitons with energy-width scaling can arise from the interaction of arbitrary negative-even-order dispersion and Kerr *** these advancements,research on the bound states of PHEOD solitons is currently *** this study,we obtained PHEOD bound solitons in a fiber laser using an intra-cavity spectral pulse shaper for high-order dispersion ***,we experimentally demonstrate the existence of PHEOD solitons and PHEOD bound solitons with pure-quartic,-sextic,-octic,and-decic *** simulations corroborate these experimental ***,vibrating phase PHEOD bound soliton pairs,sliding phase PHEOD bound soliton pairs,and hybrid phase PHEOD bound tri-soliton are discovered and *** results broaden the fundamental understanding of solitons and show the universality of multi-soliton patterns.

关键词： dispersion solitons soliton

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纳米结构多主元合金的力学行为及强塑化机制

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金属学报 2024年第1期60卷 16-29页

作者：刘畅吴戈吕坚西安交通大学金属材料强度国家重点实验室材料创新设计中心西安710049 西安交通大学金属材料强度国家重点实验室微纳尺度材料行为研究中心西安710049 香港城市大学机械工程系中国香港999077 香港城市大学深圳研究院深圳518057

超强高塑性合金在基础设施、航空航天、国防军工等领域中有广泛的应用需求,然而,金属的塑性通常随着强度的增加而降低,即:强度-塑性相互掣肘。本文从纳米结构多主元合金的强塑化研究存在的挑战出发,综述了剧烈塑性变形、物理气相沉积、... 详细信息

超强高塑性合金在基础设施、航空航天、国防军工等领域中有广泛的应用需求,然而,金属的塑性通常随着强度的增加而降低,即:强度-塑性相互掣肘。本文从纳米结构多主元合金的强塑化研究存在的挑战出发,综述了剧烈塑性变形、物理气相沉积、机械合金化等纳米结构制备方法对多主元合金力学性能的影响。阐述了相关合金的跨尺度变形机制及塑性变形起源,并对未来纳米结构多主元合金的研发及机制分析进行了展望。

关键词：多主元合金纳米结构强度塑性剧烈塑性变形物理气相沉积

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Where Does the Real Estate Demand Go?

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China Forex 2024年第2期 39-42页

作者： wu ge YU Tao CAO Haiwei GAO Tong Changjiang Securities

In the currentlandscape of the real estate market,we can see significant adjustments in pricing and sales *** the first quarter of this year,commercial property transactions decreased by 27.6%compared to the corresponding period last year,with total sales plummeting by 44%from the historic peak recorded in the first quarter of 2021.

关键词： landscape quarter sales

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Theoretical Analysis and Practical Reflection on the Role Conflict of Double-Qualified Teachers in University-Affiliated Hospitals

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Journal of Contemporary Educational Research 2024年第5期8卷 27-36页

作者： Yuanyuan Jia Yu Cai Siqi Wang Ying Yang ge wu Faculty Development and Teaching Evaluation Office The First Affiliated Hospital of Xi’an Medical UniversityXi’an 710000Shaanxi ProvinceChina Xi’an Medical University Xi’an 710000Shaanxi ProvinceChina

Taking role conflict as the starting point,this article examines and reflects on the development of clinical *** the process of the occurrence,development,and resolution of role conflicts among clinical teachers,there are many hidden issues related to the development of clinical *** development of clinical teacher teaching and role conflict management contain similar educational philosophies and practical *** study draws on classic theories and research achievements in the development of university teachers and conducts theoretical analysis and practical reflection on the development of clinical teachers in medical colleges from the perspective of role conflict in social *** recommendations are proposed,including strengthening the construction of teaching systems at the hospital organizational environment level,enhancing the role identity and teacher beliefs of clinical teachers,promoting their teaching development and academic learning,and ensuring their normal teaching investment;promoting leadership support at the level of interpersonal interaction and leveraging the role of colleague support in alleviating role conflicts;enhancing individual teacher beliefs,teacher role learning,and role skills.

关键词： University-affiliated hospitals Double-qualified teachers Role conflict

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Exploration of Teaching Development Strategies for Double-Qualified Teachers in University- Affiliated Hospitals Based on Role Conflict Theory

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Journal of Contemporary Educational Research 2024年第6期8卷 121-127页

This study draws on the classic theories and research achievements of university teacher development,and from the perspective of role conflict in social psychology,proposes policy recommendations for the development of clinical teachers in medical colleges,including following different stages of teacher development and designing teaching development strategies at different levels;designing the content and form of teaching development activities to meet the temporal and spatial needs of clinical teachers;and building an academic community for clinical teachers to promote the creation of teaching development behaviors.

关键词： University-affiliated hospitals Double-qualified teachers Role conflict theory Teaching development strategies

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Homogenization Construction of Three-Level Teaching Bases for general Practice Medicine Under the Internet+Model

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Journal of Contemporary Educational Research 2024年第5期8卷 46-52页

作者： Yu Cai ge wu Yuanyuan Jia Siqi Wang Chang Tian Yu Feng Faculty Development and Teaching Evaluation Office The First Affiliated Hospital of Xi’an Medical UniversityXi’an 710000Shaanxi ProvinceChina Xi’an Medical University Xi’an 710000Shaanxi ProvinceChina

With the continuous expansion of medical student enrollment,the number of clinical teaching bases is gradually ***,there are significant differences in clinical teaching management models and teaching levels among different *** clinical teaching bases have incomplete teaching management systems,inadequate teaching management institutions,insufficient teaching personnel,and inadequate implementation of teaching rules and *** article combines the construction practice of three-level clinical teaching base of the general Medicine College and the First Affiliated Hospital of Xi’an Medical *** establish a standardized management system for the three-level clinical teaching base;implement a teaching supervision system and strengthen the monitoring of teaching quality;adopt multiple evaluations to test the effectiveness of clinical teaching implementation;explore the path of homogenization construction of teaching bases in terms of unified teacher training,promoting the development of teacher teaching abilities with equal quality and excellence,and providing a reference for improving the quality of medical talent training.

关键词： Clinical teaching base Homogenization construction general practice medicine

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中华体育精神的空间传承与创新——从列斐伏尔的空间生产理论看北京2022年冬奥会

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中国体育科技 2024年第1期60卷 69-74页

作者：吴戈李玄张欣天津体育学院天津301617 河北北方学院河北张家口075000

中华体育精神是中华民族在长期体育实践中形成和积淀的优秀精神文化,为实现体育强国和中华民族伟大复兴提供价值引领。运用文献资料调研和逻辑分析研究方法,以列斐伏尔的空间生产理论为理论框架,以北京2022年冬奥会为研究对象,从空间实... 详细信息

中华体育精神是中华民族在长期体育实践中形成和积淀的优秀精神文化,为实现体育强国和中华民族伟大复兴提供价值引领。运用文献资料调研和逻辑分析研究方法,以列斐伏尔的空间生产理论为理论框架,以北京2022年冬奥会为研究对象,从空间实践、空间表征和表征的空间3个维度,分析北京2022年冬奥会空间生产与中华体育精神传承创新的关系。北京2022年冬奥会空间生产既是北京2022年冬奥会空间的物质化、概念化和感性化的过程,又是北京2022年冬奥会空间的生产者和消费者互动、协商的过程。北京2022年冬奥会空间生产与中华体育精神有着密切关系,既是中华体育精神的具体体现、有效传播和创新发展,又助力实现体育强国和中华民族伟大复兴。

关键词：中华体育精神空间传承与创新空间生产理论北京2022年冬奥会

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颠覆性创新:普及化时代民办高校的价值守正与路径突破

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江苏高教 2024年第1期 108-116页

作者：吴舸王昕邓磊广州应用科技学院办公室广东肇庆526000 西南大学国际学院重庆400715 西南大学教师教育学院重庆400715

作为我国高等教育系统的重要部分,民办高等教育实现其高质量发展具有必要性和现实性。近年来,高等教育普及化与人口转型联袂而至,对高等教育体系中处于弱势序列的民办高等教育提出了新的挑战。为适应新的社会发展现实,民办高校亟须突破... 详细信息

作为我国高等教育系统的重要部分,民办高等教育实现其高质量发展具有必要性和现实性。近年来,高等教育普及化与人口转型联袂而至,对高等教育体系中处于弱势序列的民办高等教育提出了新的挑战。为适应新的社会发展现实,民办高校亟须突破传统办学的窠臼,从守正与颠覆两个角度寻求创新和突破。一方面,民办高校应遵循历时性发展路向,守护高等教育的公共价值与社会属性;另一方面,民办高校必须面对现实条件,以颠覆式创新理论为指导发挥自组织的主体特性。着眼于办学路向、人才培养、学科设置等维度,沿着“守正-创新”双向逻辑主线寻求突破,以推动创新型民办高校高质量高水平发展。

关键词：民办高校价值守正颠覆式创新高质量发展

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我国工业减污降碳的绿色偏向技术进步:要素贡献、偏向识别与影响因素

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统计研究 2024年第5期41卷 3-14页

作者：吴戈张月池苗壮西南财经大学公共管理学院、数字经济与交叉科学创新研究院西南财经大学经济学院西南财经大学经济学院、习近平经济思想研究院

精准推进绿色偏向技术进步,是聚焦节能降碳减污目标、实现我国工业部门全面绿色低碳转型与高质量发展的重要驱动力。本文将能源与CO_(2)、VOC_(S)、NO_(X)要素纳入全要素生产率的框架,结合非角度、非径向的BAM-DEA模型和Luenberger生产... 详细信息

精准推进绿色偏向技术进步,是聚焦节能降碳减污目标、实现我国工业部门全面绿色低碳转型与高质量发展的重要驱动力。本文将能源与CO_(2)、VOC_(S)、NO_(X)要素纳入全要素生产率的框架,结合非角度、非径向的BAM-DEA模型和Luenberger生产率指标分解模型,科学测度2000—2020年我国省际工业绿色偏向技术进步的要素贡献,识别绿色技术进步的要素偏向,并进一步探究环境要素绿色偏向技术进步的影响因素。研究表明,绿色技术进步是我国工业绿色全要素生产率提升的主要驱动力,但促进作用力正渐趋弱化,其中劳动、能源与环境要素对工业绿色偏向技术进步的贡献显著。从偏向类型上看,投入要素和环境要素在技术进步中分别属于资本与劳动节约型、NO_(X)与CO_(2)减排型偏向技术进步。此外,绿色技术创新能力提升、资本深化与能源结构优化对我国工业环境绿色偏向技术进步的促增效应显著。本文为精准测度不同能源与环境要素的绿色偏向技术进步水平提供新的研究范式和方法,为寻求我国工业减污降碳协同治理和绿色低碳转型的技术创新路径提供科学依据。

关键词：绿色偏向技术进步 Luenberger生产率指标要素识别减污降碳

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