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Defence Technology（防务技术） 2024年第4期34卷 134-142页

作者： Peng Wang Wen Qian Ruolei Zhong fangfang He Xin Li Jie Chen Li Meng Yinshuang Sun Guansong He Institute of Chemical Materials China Academy of Engineering PhysicsMianyang 621900China State Key Laboratory of Environment-friendly Energy Materials School of Materials and ChemistrySouthwest University of Science and TechnologyMianyang 621010China

The poor thermal stability and high sensitivity severely hinder the practical application of hexanitrohexaazaisowurtzitane(CL-20).Herein,a kind of novel core@double-shell CL-20 based energetic composites were fabricated to address the above *** coordination complexes which consist of natural polyphenol tannic acid(TA) and Fe~Ⅲ were chosen to construct the inner shell,while the graphene sheets were used to build the outer *** resulting CL-20/TA-Fe~Ⅲ/graphene composites exhibited simultaneously improved thermal stability and safety performance with only 1 wt% double-shell content,which should be ascribed to the intense physical encapsulation effect from inner shell combined with the desensitization effect of carbon nano-materials from outer *** phase transition(ε to γ) temperature increased from 173.70 ℃ of pure CL-20 to 191.87℃ of CL-20/TA-Fe~Ⅲ/graphene ***,the characteristic drop height(H_(50)) dramatically increased from 14.7 cm of pure CL-20 to112.8 cm of CL-20/TA-Fe~Ⅲ/graphene composites,indicating much superior safety performance after the construction of the double-shell *** general,this work has provided an effective and versatile strategy to conquer the thermal stability and safety issues of CL-20 and contributes to the future application of high energy density energetic materials.

关键词： CL-20 Double-shell structure Thermal stability Safety performance Tannic acid Graphene sheets

Linkages among leaf nutrient concentration,resorption efficiency, litter decomposition and their stoichiometry to canopy nitrogen addition and understory removal in subtropical plantation

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Ecological Processes 2024年第2期13卷 90-102页

作者： Jawad Ali Shah Wenfei Liu Saif Ullah Honglang Duan fangfang Shen Yingchun Liao Guomin Huang Jianping Wu Ministry of Education Key Laboratory for Transboundary Ecosecurity of Southwest China Yunnan Key Laboratory of Plant Reproductive Adaptation and Evolutionary Ecology and Institute of Biodiversity School of Ecology and Environmental Science Yunnan University Laboratory of Soil Ecology and Health in Universities of Yunnan Province Yunnan University Jiangxi Key Laboratory for Restoration of Degraded Ecosystems & Watershed Ecohydrology Nanchang Institute of Technology Key Laboratory of Forest Cultivation in Plateau Mountain of Guizhou Province Institute for Forest Resources and Environment of Guizhou College of ForestryGuizhou University

Background The prevalence of understory removal and anthropogenic nitrogen(N) deposition has significantly altered the ecological processes of forest ecosystems at both regional and global scales. However, it remains a pressing challenge to understand how N deposition and understory removal affect leaf nutrient dynamics, nutrient resorption, litter decomposition, and their linkages for better managing forest ecosystems under nutrient imbalances induced by N enrichment. To address this research gap, a field manipulation experiment was carried out in a subtropical Cunninghamia lanceolata plantation with four treatments including: control(CK), canopy N addition(CN), understory removal(UR), and canopy N addition plus understory removal(CN × UR). Green and senesced leaf N and phosphorus(P) concentrations, N and P resorption efficiencies, litter decomposition, and their correlations were *** The results revealed that the average N concentrations of green early and late leaves in UR were increased by 6.61 and 18.89% compared to CK. UR had the highest whereas CN had the lowest P concentrations in green leaves across the two sampling seasons. Following this, UR, leaf type, season, and their interactions significantly affected leaf N, P, and N:P(P < 0.05). The highest leaf N resorption(32.68%) and P resorption efficiencies(63.96%) were recorded in UR. Litter decomposition was significantly retarded in UR(P < 0.01) relative to CN. The regression analysis demonstrated that leaf nutrient status was significantly interconnected with leaf nutrient resorption efficiencies. In addition, leaf nutrient dynamics were strongly correlated with litter nutrients, indicating that both were *** These findings can deepen our knowledge of biogeochemical cycling and reveal contrasting nutrientacquisition strategies on N and P limitation in response to UR and CN. Considering the P limitation, it is important to note that P was resorbed more efficiently, illustrating a

关键词： Nutrient resorption Nitrogen deposition Litter decomposition Stoichiometry Understory removal Subtropical plantation

A novel silver-doped nickel oxide hole-selective contact for crystalline silicon heterojunction solar cells

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Frontiers of Chemical Science and Engineering 2024年第2期18卷 93-101页

作者： Junfeng Zhao Xudong Yang Zhongqing Zhang Shengpeng Xie fangfang Liu Anjun Han Zhengxin Liu Yun Sun Wei Liu Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin Engineering Research Center of Thin Film Photoelectronic TechnologyInstitute of Photoelectronic Thin Film Devices and Technology of Nankai University(Ministry of Education)Tianjin 300350China Shanghai Institute of Microsystem and Information Technology Chinese Academy of SciencesShanghai 201800China

Based on its band alignment,p-type nickel oxide(NiO_(x))is an excellent candidate material for hole transport layers in crystalline silicon heterojunction solar cells,as it has a smallΔEV and largeΔEC with crystalline ***,to overcome the poor hole selectivity of stoichiometric NiO_(x) due to its low carrier concentration and conductivity,silver-doped nickel oxide(NiO_(x):Ag)hole transport layers with high carrier concentrations were prepared by co-sputtering high-purity silver sheets and pure NiO_(x) *** improved electrical conductivity of NiO_(x) was attributed to the holes generated by the Ag^(+)substituents for Ni^(2+),and moreover,the introduction of Ag^(+)also increased the amount of Ni^(3+)present,both of which increased the carrier concentration in NiO_(x).Ag^(+)doping also reduced the c-Si/NiO_(x) contact resistivity and improved the hole-selective contact with NiO_(x).Furthermore,the problems of particle clusters and interfacial defects on the surfaces of NiO_(x):Ag films were solved by UV-ozone oxidation and high-temperature annealing,which facilitated separation and transport of carriers at the c-Si/NiO_(x) *** constructed c-Si/NiO_(x):Ag solar cell exhibited an increase in open-circuit voltage from 490 to 596 mV and achieved a conversion efficiency of 14.4%.

关键词： band alignment nickel oxide hole transport layer silver-doped nickel oxide UV-ozone

自我牺牲型领导对员工建言的影响:有调节的中介效应

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科研管理 2019年第9期40卷 221-230页

作者：姚楠张亚军周芳芳贵州财经大学工商管理学院

基于社会认同视角,本研究探讨了自我牺牲型领导对员工建言的影响及其内在机制。选择贵州省12家企业员工及其领导作为研究对象,采用层级回归等方法分析了295份配对样本。结果表明:自我牺牲型领导正向影响员工建言;领导认同在自我牺牲型... 详细信息

基于社会认同视角,本研究探讨了自我牺牲型领导对员工建言的影响及其内在机制。选择贵州省12家企业员工及其领导作为研究对象,采用层级回归等方法分析了295份配对样本。结果表明:自我牺牲型领导正向影响员工建言;领导认同在自我牺牲型领导与员工建言之间起着中介作用;领导虚伪感知负向调节自我牺牲型领导与领导认同之间的关系,亦负向调节自我牺牲型领导经由领导认同影响员工建言的间接效应。

关键词：自我牺牲型领导员工建言领导认同领导虚伪感知

Amide naphthotubes:Biomimetic macrocycles for selective molecular recognition

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Chinese Chemical Letters 2024年第4期35卷 124-131页

作者： Cheng-Da Zhao Huan Yao Shi-Yao Li fangfang Du Li-Li Wang Liu-Pan Yang School of Pharmaceutical Science Postdoctoral Research Station of Basic MedicineHengyang Medical SchoolUniversity of South ChinaHengyang 421001China

Selective molecular recognition in water is routine for bioreceptors,but remains challenging for synthetic *** is principally because noncovalent interactions are usually less efficient in aqueous *** mimicking the cavity feature of bioreceptors,*** Jiang proposed and clarified the concept of“endo-functionalized cavity”.Through situating polar binding sites into a deep hydrophobic cavity,we designed and synthesized several macrocyclic hosts,among which amide naphthotubes are the most *** hosts can selectively recognize various polar molecules including organic micropollutants,drug molecules,and chiral molecules in water by employing the hydrophobic effect and shielded hydrogen *** addition,these biomimetic hosts have been applied in spectroscopic analysis,adsorptive separation and *** this review,we provide an overview of recent advances on amide naphthotubes with special emphasis on the efforts of Jiang's *** are convinced that these biomimetic macrocycles will make further contributions to supramolecular chemistry and beyond.

关键词： Molecular recognition Supramolecular chemistry Amide naphthotube Endo-functionalized cavity Biomimetic macrocycle

lncRNA Gm20257 alleviates pathological cardiac hypertrophy by modulating the PGC-1α–mitochondrial complexⅣaxis

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Frontiers of Medicine 2024年第4期18卷 664-677页

作者： Tong Yu Qiang Gao Guofang Zhang Tianyu Li Xiaoshan Liu Chao Li Lan Zheng Xiang Sun Jianbo Wu Huiying Cao fangfang Bi Ruifeng Wang Haihai Liang Xuelian Li Yuhong zhou Lifang Lv Hongli Shan Department of Physiology School of Basic MedicineHarbin Medical UniversityHarbin150081China State Key Laboratory of Frigid Zone Cardiovascular Disease Department of Pharmacology(State-Province Key Laboratories of Biomedicine-Pharmaceutics of China Key Laboratory of Cardiovascular Research Ministry of Education)College of PharmacyHarbin Medical UniversityHarbin150081China The Center of Functional Experiment Teaching School of Basic MedicineHarbin Medical UniversityHarbin150081China

Pathological cardiac hypertrophy,a major contributor to heart failure,is closely linked to mitochondrial *** roles of long noncoding RNAs(lncRNAs),which regulate mitochondrial function,remain largely unexplored in this ***,a previously unknown lncRNA,Gm20257,was *** markedly increased under hypertrophic stress in vivo and in *** suppression of Gm20257 by using small interfering RNAs significantly induced cardiomyocyte ***,the overexpression of Gm20257 through plasmid transfection or adeno-associated viral vector-9 mitigated angiotensinⅡ-induced hypertrophic phenotypes in neonatal mouse ventricular cells or alleviated cardiac hypertrophy in a mouse TAC model respectively,thus restoring cardiac ***,Gm20257 restored mitochondrial complexⅣlevel and enhanced mitochondrial *** prediction showed that Gm20257 had a high binding score with peroxisome proliferator–activated receptor coactivator-1(PGC-1α),which could increase mitochondrial complex ***,Western blot analysis results revealed that Gm20257 substantially affected the expression of PGC-1α.Further analyses through RNA immunoprecipitation and immunoblotting following RNA pull-down indicated that PGC-1αwas a direct downstream target of *** interaction was demonstrated to rescue the reduction of mitochondrial complex IV induced by hypertrophic stress and promote the generation of mitochondrial *** findings suggest that Gm20257 improves mitochondrial function through the PGC-1α-mitochondrial complexⅣaxis,offering a novel approach for attenuating pathological cardiac hypertrophy.

关键词： lncRNA Gm20257 cardiac hypertrophy PGC-1α mitochondrial complexⅣ ATP

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调节性坏死在急性肾损伤中的相关研究进展

中华危重病急救医学 2021年第7期33卷 885-888页

作者：陆怡周芳芳罗群宁波大学医学院浙江宁波315000 中国科学院大学宁波华美医院肾内科浙江宁波315000

调节性坏死是新发现的新型细胞死亡途径,包括程序性坏死、细胞焦亡、铁死亡等。有研究报道,调节性坏死在缺血/再灌注、顺铂等药物、横纹肌溶解所诱发的急性肾损伤(AKI)中起到关键作用。研究调节性坏死相关通路在AKI中的作用,有望为明确... 详细信息

调节性坏死是新发现的新型细胞死亡途径,包括程序性坏死、细胞焦亡、铁死亡等。有研究报道,调节性坏死在缺血/再灌注、顺铂等药物、横纹肌溶解所诱发的急性肾损伤(AKI)中起到关键作用。研究调节性坏死相关通路在AKI中的作用,有望为明确AKI的发病机制及治疗提供新方向,具有潜在治疗和应用前景。本文对程序性坏死、细胞焦亡、铁死亡的相关信号通路及其在AKI中的相关研究进展进行综述,以期为AKI的防治提供潜在靶点。

关键词：调节性坏死程序性坏死细胞焦亡铁死亡急性肾损伤

Construction of millimeter-scale vascularized engineered myocardial tissue using a mixed gel

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Regenerative Biomaterials 2024年第3期3卷 56-67页

作者： Ming Ke Wenhui Xu Yansha Hao Feiyang Zheng Guanyuan Yang Yonghong Fan fangfang Wang Zhiqiang Nie Chuhong Zhu Department of Anatomy Third Military Medical UniversityChongqing 400038China State Key Laboratory of Trauma Burn and Combined InjuryChongqing 400038China Department of Plastic and Aesthetic Surgery Southwest HospitalThird Military Medical UniversityChongqing 400038China Engineering Research Center of Tissue and Organ Regeneration and Manufacturing Ministry of EducationChongqing 400038China

Engineering myocardium has shown great clinal potential for repairing permanent myocardial ***,the lack of perfusing blood vessels and difficulties in preparing a thick-engineered myocardium result in its limited clinical *** prepared a mixed gel containing fibrin(5 mg/ml)and collagen I(0.2 mg/ml)and verified that human umbilical vein endothelial cells(HUVECs)and human-induced pluripotent stem cell-derived cardiomyocytes(hiPSC-CMs)could fom microvascular lumens and myocardial cell clusters by harnessing the low-hardness and hyperelastic characteristics of ***-CMs and HUVECs in the mixed gel formed self-organized cell clusters,which were then cultured in different media using a three-phase *** successfully constructed vascularized engineered myocardial tissue had a spherical structure and final diameter of *** tissue exhibited autonomous beats that occured at a frequency similar to a normal human heart *** internal microvascular lumen could be maintained for 6 weeks and showed good results during preliminary surface re-vascularization in vitro and vascular remodeling in *** summary,we propose a simple method for constructing vascularized engineered myocardial tissue,through phased cultivation that does not rely on high-end manufacturing equipment and cutting-edge preparation *** constructed tissue has potential value for clinical use after preliminary evaluation.

关键词： engineered myocardium vascularized hiPSC-CM HUVEC fibrin

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时间事件序列数据可视化综述

计算机辅助设计与图形学学报 2019年第10期31卷 1698-1710页

作者：彭燕妮樊晓平赵颖周芳芳中南大学计算机学院长沙410083 湖南财政经济学院财经大数据研究院长沙410205 中南大学自动化学院长沙410083

时间事件序列数据,是由一个或多个记录构成的集合,每个记录由一组带有时间戳的事件类别组成.数据可视化被广泛用于时间事件序列数据的频繁模式发现、相似模式匹配与查询以及潜在阶段模式检测.文中介绍了时间事件序列数据的特征,并重点... 详细信息

时间事件序列数据,是由一个或多个记录构成的集合,每个记录由一组带有时间戳的事件类别组成.数据可视化被广泛用于时间事件序列数据的频繁模式发现、相似模式匹配与查询以及潜在阶段模式检测.文中介绍了时间事件序列数据的特征,并重点从时间事件序列数据的可视化呈现方法和可视分析2个方面对已有的工作进行了系统的整理.在可视化呈现方式上,将现有的可视化方法分为4个类别,即基于GanttChart、基于Flow、基于StoryLines及基于矩阵的可视化方法,并分别介绍了相关类别的可视化方法的发展;将可视分析任务总结为4类主要任务,即模式发现与探索、可视化查询、对比分析及结果事件分析,并且从这些可视分析任务的角度总结了现有的可视分析工具.最后,对时间事件序列数据可视化面临的挑战以及未来趋势进行了总结和展望,以期为时间事件序列数据分析提供新的思路.

关键词：时间事件序列数据信息可视化可视分析

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人体生物节律优生辅助系统的研究与实现

计算机工程与应用 2005年第19期41卷 196-198页

作者：赵颖叶榛周芳芳清华大学计算机科学与技术系北京100084

该文简要介绍了人体生物节律理论和人体生物节律优生法则,重点对计算机优生辅助系统的设计与实现进行了详细阐述,最后讨论了利用该系统展开的验证性调查研究,该系统为孕产期的智能化管理提供了有效的分析和决策工具。

关键词：生物节律优生优育计算机优生辅助系统