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自我概念清晰性和生命意义感在大学生短视频过度使用行为与抑郁间的链式中介作用

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中华行为医学与脑科学杂志 2024年第4期33卷 342-346页

作者：张东宁吴静李婧杨一夫西安医学院公共卫生学院西安710021

目的:探讨短视频过度使用行为对大学生抑郁的影响以及自我概念清晰性和生命意义感的中介作用。方法:2023年3月至4月,采用短视频过度使用行为量表、自我概念清晰性量表、生命意义感问卷和流调中心用抑郁量表对1111名大学生进行了测试。采... 详细信息

目的:探讨短视频过度使用行为对大学生抑郁的影响以及自我概念清晰性和生命意义感的中介作用。方法:2023年3月至4月,采用短视频过度使用行为量表、自我概念清晰性量表、生命意义感问卷和流调中心用抑郁量表对1111名大学生进行了测试。采用SPSS 25.0进行描述性统计和相关分析及共同方法偏差检验,采用Amos 26.0进行结构方程建模,Bootstrap法进行中介效应检验。结果:(1)短视频过度使用行为[(19.63±5.92)分]与抑郁[(13.11±9.60)分]呈正相关(r=0.23,P<0.01),自我概念清晰性[(37.02±6.73)分]、拥有意义感[(23.57±5.46)分]分别与抑郁显著负相关(r=-0.42,-0.43,P<0.01)。(2)短视频过度使用行为可以直接正向预测抑郁(效应值为0.07,95%CI=0.01~0.14),自我概念清晰性和拥有意义感分别在短视频过度使用行为与抑郁之间发挥中介作用(效应值为0.11,95%CI=0.08~0.14)(效应值为0.02,95%CI=0.01~0.04),自我概念清晰性和拥有意义感在短视频过度使用行为与抑郁之间发挥链式中介作用(效应值为0.04,95%CI=0.03~0.06)。结论:短视频过度使用行为可以增加大学生抑郁发生的风险,自我概念清晰性与拥有意义感在短视频过度使用行为的作用下也会对抑郁产生影响。

关键词：短视频过度使用行为抑郁自我概念清晰性生命意义感大学生

Dendrite-free all-solid-state lithium batteries with lithium phosphorous oxynitride-modified lithium metal anode and composite solid electrolytes

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Nano Research 2019年第1期12卷 217-223页

作者： Chunhua Wang Guoliang Bai yifu yang Xingjiang Liu Huixia Shao Hubei Key Lab.of Electrochemical Power Sources College of Chemistry and Molecular SciencesWuhan UniversityWuhan 430072China Anhui Province Key Laboratory of Optoelectron ic and Magnetism Functional Materials Key Laboratory of Functional Coordination Compounds of Anhui Higher Education InstitutesAnqing Normal UniversityAnqing 246011China National Key Lab.of Power Sources Tianjin Institute of Power SourcesTianjin 300381China

Dendrite formation on lithium (Li) metal anode is a key issue which hinders the development of rechargeable Li battery seriously. A novel method for suppress!ng Li dendrites via using Li phosphorous oxynitride (UPON) modified Li anode and Li1.5Al0.5Ge1.5(PO4)3-poly(ethylene oxide)(Li bistrifluoromethane-sulfonimide)(LAGP-PEO(LiTFSI)) composite solid electrolyte in all-solid-state Li battery is proposed, and the effect of the thickness of UPON on Li anode performarice is also studied. LiPON film with a thickness of 500 nm exhibits satisfactory interface property between Li metal anode and the LAGP-PEO(LiTFSI) solid electrolyte. The LiPON film provides a uniform Li^+ flux across the interface and effectively inhibits the formation of Li dendrites in all-solid-state Li batteries. The assembled all-solid-state Li cell Li(LiPON)/LAGP-PEO(LiTFSI)/LiFePO4 delivers an initial discharge capacity of 152.4 mAh·g^-1 and exhibits good cycling stability and rate performanee at 50 ℃.

关键词： lithium metal anode lithium dendrites Li phosphorous oxynitride (LiPON) composite solid electrolyte all-solid-state lithium battery

Identification of key pathways and gene expression in the activation of mast cells via calcium flux using bioinformatics analysis

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BIOCELL 2021年第2期45卷 395-415页

作者： XIAOYU WANG TAKESHI YAMAMOTO MAKOTO KADOWAKI yifu yang Laboratory of Immunology and Virology Experiment Center for Science and TechnologyShanghai University of Traditional Chinese MedicineShanghai201203China Division of Gastrointestinal Pathophysiology Institute of Natural MedicineUniversity of ToyamaToyama9300194Japan

Mast cells are the main effector cells in IgE-associated allergic disorders,and we have reported that mucosal mast cells(MMCs)play a more important role in the development of food allergy(FA).IgE with antigen or calcium ionophore stimulation can lead to the activation of MMCs via a calcium-dependent *** purpose of the present study was to identify gene signatures with IgE/antigen(dinitrophenyl-bovine serum albumin,DNP-BSA)or calcium ionophore(A23187)on the activation of *** expressed genes between the two types of samples were identified with microarray *** ontology functional and pathway enrichment analyses of differentially expressed genes were performed using the database for annotation,visualization,and integrated discovery *** results showed that IgE/antigen and A23187 could induce degranulation,increase vacuoles,and elevate the cytosolic calcium concentration in ***,GeneChip analysis showed that the same 134 mRNAs were altered with IgE/DNP-BSA and A23187,suggesting that DNP-BSA/IgE and A23187 affect the same signal pathway partly in *** analysis showed that the data were enriched in NF-κB,TNF,MAPK,transcription factor activity,DNA binding,and nucleic acid binding,suggesting that activation of MMCs is a complex *** results provide new insights on MMCs activation.

关键词： Mucosal mast cell Antigen Calcium ion Bioinformatics analysis

不同官能团修饰碳纳米管填充PP复合材料分子模拟

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工程塑料应用 2024年第3期52卷 13-20页

作者：李亚莎赵光辉曾跃凯熊英莹田泽杨一夫三峡大学电气与新能源学院湖北宜昌443002 山西大学电力与建筑学院太原030006

随着光伏发电和海上发电等新型清洁能源的迅速发展,对薄膜电容器的工作温度提出了更高的要求。然而,当前使用最泛的双向拉伸聚丙烯(BOPP)电容器薄膜在高温以上时无法胜任应用需求。基于实验与仿真的方法,对聚丙烯(PP)、碳纳米管及羟基... 详细信息

随着光伏发电和海上发电等新型清洁能源的迅速发展,对薄膜电容器的工作温度提出了更高的要求。然而,当前使用最泛的双向拉伸聚丙烯(BOPP)电容器薄膜在高温以上时无法胜任应用需求。基于实验与仿真的方法,对聚丙烯(PP)、碳纳米管及羟基、氨基、羧基功能化碳纳米管(CNTs-COOH)填充PP复合体系进行热重试验、玻璃化转变温度、热导率、自由体积分数和均方位移等性能的研究。结果表明,经羧基修饰的碳纳米管与PP复合后的热学性能增加效果最为显著,氨基、羟基修饰的碳纳米管体系次之。CNTs-COOH复合材料具有更优异的性能,其起始热分解温度和玻璃化转变温度分别提高了76.15℃和40.33℃,热导率较纯PP体系提高了18.27%,自由体积分数降低至17.96%。羧基的加入能够有效占据PP/CNTs复合体系中的空穴,减缓复合体系分子链段的移动和降低复合体系的均方位移,使得PP复合体系保持良好的热稳定性。研究结果可为适用于高温条件的PP电容器薄膜材料提供参考。

关键词：聚丙烯碳纳米管热学性能热重试验分子动力学

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可持续生态学视角下生态产品价值实现的思路

中国人口·资源与环境 2024年第6期34卷 151-160页

作者：张盛李宏伟吕永龙张二进张杰王溢晟周云桥杨逸夫郝吉明清华大学环境学院北京100084 中共中央党校(国家行政学院)社会和生态文明教研部北京100091 厦门大学环境与生态学院福建厦门361102 中国科学院青藏高原研究所青藏高原地球系统与资源环境全国重点实验室北京100101 上海大学经济学院上海200444

生态产品价值实现是工业文明向生态文明过渡的产物,是“绿水青山就是金山银山”理念的重要实践。中国在生态产品价值实现的实践探索和理论研究中注重生态产品价值转化,但在一定程度上忽视了生态产品价值可持续实现的问题,导致生态产品... 详细信息

生态产品价值实现是工业文明向生态文明过渡的产物,是“绿水青山就是金山银山”理念的重要实践。中国在生态产品价值实现的实践探索和理论研究中注重生态产品价值转化,但在一定程度上忽视了生态产品价值可持续实现的问题,导致生态产品价值实现在理念认知、保护修复、产业发展、部门协同、价值共享等方面出现了不可持续的趋势。可持续生态学在生态产品价值实现过程中扮演着核心角色,它不仅关注人类社会经济活动与自然生态系统之间的矛盾,而且致力于探索两者协调发展的可行路径。该研究基于可持续生态学的发展度-协调度-持续度的三维评价体系,采用文本分析与案例研究相结合的方法,以可持续发展理论为指导,结合社会-经济-自然复合生态系统的内在逻辑,综合考虑质量、动力和公平三个关键要素,构建了生态产品价值可持续实现的理论分析框架。该理论分析框架着重关注生态产品价值实现的全过程,特别遵循三个基本原则:在前端,与2030年联合国可持续发展目标(SDGs)紧密对接,确保生态产品价值实现与全球可持续发展议程同步;在中端,尊重地域差异性,将地方实践与生态产品价值的转化相结合;在末端,实现生态产品价值的均等共享,与社会持续公平系统相衔接,确保代际公平。基于生态产品价值可持续实现的理论分析框架,提出中国生态产品价值可持续实现的推进思路,即深挖动力要素以支撑健康发展、注重质量元素以调动多方协调、考虑公平元素以确保代际均衡,为促进生态产品价值可持续实现,促进生态文明建设,实现人与自然和谐共生的现代化提供科学依据。

关键词：可持续生态学复合生态系统生态产品价值实现可持续发展目标(SDGs)

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Enhanced Strength-Ductility Synergy in Submerged Friction Stir Processing ER2319 Alloy Manufactured by Wire-Arc Additive Manufacturing via Creating Ultrafine Microstructure

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Acta Metallurgica Sinica(English Letters) 2024年第5期37卷 793-807页

作者： Jinpeng Hu Tao Sun Fujun Cao yifu Shen Zhiyuan yang Chan Guo College of Materials Science and Technology Nanjing University of Aeronautics and Astronautics(NUAA)Nanjing 210016China

Submerged friction stir processing(SFSP)with flowing water was employed to alleviate the porosities and coarse-grained structure introduced by wire-arc *** a result,uniform and ultrafine grained(UFG)structure with average grain size of 0.83μm was achieved with the help of sharply reduced heat input and holding time at elevated *** optimized UFG structure enabled a superior combination of strength and ductility with high ultimate tensile strength and elongation of 273.17 MPa and 15.39%.Specifically,grain refinement strengthening and decentralized θ(Al_(2)Cu)phase in the sample subjected to SFSP made great contributions to the enhanced *** addition,the decrease in residual stresses and removal of pores substantially enhance the *** rates of cooling and low temperature cycling,which are facilitated by the water-cooling environment throughout the machining process,are vital in obtaining superior *** work provides a new method for developing a uniform and UFG structure with excellent mechanical properties.

关键词： Submerged friction stir processing Wire-arc additive manufacturing Al-Cu alloy Residual stress Strengthening and toughening mechanism Ultrafine grained microstructure

Robust polarimetric dehazing algorithm based on low-rank approximation and multiple virtual-exposure fusion

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Photonics Research 2024年第8期12卷 1640-1653页

作者： yifu ZHOU HANYUE WEI JIAN LIANG FEIYA MA RUI yang LIYONG REN XUELONG LI School of Physics and Information Technology Shaanxi Normal UniversityXi’an 710119China Xi’an Key Laboratory of Optical Information Manipulation and Augmentation(OMA) Xi’an 710119China Robust(Xixian New Area)Opto-Electro Technologies Co. Ltd.Xi’an 712000China Institute of Artificial Intelligence(TeleAI) China Telecom Corp Ltd.Beijing 100033China

Polarimetric dehazing is an effective way to enhance the quality of images captured in foggy ***,images of essential polarization parameters are vulnerable to noise,and the brightness of dehazed images is usually unstable due to different environmental *** two weaknesses reveal that current polarimetric dehazing algorithms are not robust enough to deal with different *** paper proposes a novel,to our knowledge,and robust polarimetric dehazing algorithm to enhance the quality of hazy images,where a low-rank approximation method is used to obtain low-noise polarization parameter ***,in order to improve the brightness stability of the dehazed image and thus keep the image have more details within the standard dynamic range,this study proposes a multiple virtual-exposure fusion(MVEF)scheme to process the dehazed image(usually having a high dynamic range)obtained through polarimetric *** experiments show that the proposed dehazing algorithm is robust and effective,which can significantly improve overall quality of hazy images captured under different environments.

关键词： algorithm approximation image

Additive manufactured osseointegrated screws with hierarchical design

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Bio-Design and Manufacturing 2024年第2期7卷 206-235页

作者： Wenbo yang Hao Chen Haotian Bai yifu Sun Aobo Zhang yang Liu Yuchao Song Qing Han Jincheng Wang Department of Orthopedics Second Hospital of Jilin UniversityChangchun 130022China College of Biological and Agricultural Engineering Jilin UniversityChangchun 130022China School of Materials Science and Engineering Jilin UniversityChangchun 130022China

Bone screws are devices used to fix implants or bones to ***,conventional screws are mechanically fixed with thread and often face long-term failure due to poor *** improve osseointegration,screws are evolving from solid and smooth to porous and *** manufacturing(AM)offers a high degree of manufacturing freedom,enabling the preparation of predesigned screws that are porous and *** paper provides an overview of the problems currently faced by bone screws:long-term loosening and screw ***,advances in osseointegrated screws are summarized hierarchically(sub-micro,micro,and macro).At the sub-microscale level,we describe surface-modification techniques for enhancing *** the micro level,we summarize the micro-design parameters that affect the mechanical and biological properties of porous osseointegrated screws,including porosity,pore size,and pore *** addition,we highlight three promising pore shapes:triply periodic minimal surface,auxetic structure with negative Poisson ratio,and the Voronoi *** the macro level,we outline the strategies of graded design,gradient design,and topology optimization design to improve the mechanical strength of porous osseointegrated ***,this paper outlines advances in AM technology for enhancing the mechanical properties of porous osseointegrated *** osseointegrated screws with hierarchical design are expected to provide excellent long-term fixation and the required mechanical strength.

关键词： Bone screws Additive manufacturing Architecture design Surface modification

Design strategies for rechargeable aqueous metal-ion batteries

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Science China Chemistry 2024年第1期67卷 165-190页

作者： yang Li Xin Zhao yifu Gao Yichen Ding Zhichun Si Liubing Dong Dong Zhou Feiyu Kang Tsinghua Shenzhen International Graduate School Tsinghua UniversityShenzhen 518055China College of Chemistry and Materials Science Jinan UniversityGuangzhou 511443China

Rechargeable aqueous metal-ion batteries(AMBs)have attracted extensive scientific and commercial interest due to their potential for cost-effective,highly safe,and scalable stationary energy ***,their limited output voltage,inadequate energy density,and poor reversibility of ambiguous electrode reactions in aqueous electrolytes strongly limit their practical *** review aims to elucidate the challenges of existing AMBs from the material design to whole device *** summarize the emerging electrochemistry,fundamental properties,and key issues in interfacial behaviors of various classes of prevailing AMBs,including aqueous alkali metal-ion batteries and multivalent-ion batteries,and present an appraisal of recent advances for addressing the performance ***,the progress of zinc-ion batteries is highlighted to provide a ubiquitous guideline for their commercialization in the grid-scale energy ***,we figure out the dominating general challenges for achieving high-performance AMBs,laying out a perspective for future breakthroughs.

关键词： aqueous metal-ion batteries aqueous alkali metal-ion batteries zinc-ion batteries interfacial behavior stationary energy storage