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Mechanism of high Li-ion conductivity in poly(vinylene carbonate)-poly(ethylene oxide)cross-linked network based electrolyte revealed by solid-state NMR

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Journal of Energy Chemistry 2024年第6期93卷 377-383,I0010页

作者： Fan Li Tiantian Dong yi ji Lixin Liang Kuizhi Chen Huanrui Zhang Guanglei Cui Guangjin Hou State Key Laboratory of Catalysis Dalian National Laboratory for Clean EnergyCollaborative Innovation Center of Chemistry for Energy MaterialsDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina University of Chinese Academy of Sciences Beijing 100049China Qingdao Industrial Energy Storage Research Institute Qingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesQingdao 266101ShandongChina

Solid polymer electrolytes(SPEs)have become increasingly important in advanced lithium-ion batteries(LIBs)due to their improved safety and mechanical properties compared to organic liquid ***-linked polymers have the potential to further improve the mechanical property without trading off Li-ion *** this study,focusing on a recently developed cross-linked SPE,i.e.,the one based on poly(vinylene carbonate)-poly(ethylene oxide)cross-linked network(PVCN),we used solid-state nuclear magnetic resonance(NMR)techniques to investigate the fundamental interaction between the chain segments and Li ions,as well as the lithium-ion *** utilizing homonuclear/heteronuclear correlation,CP(cross-polarization)kinetics,and spin-lattice relaxation experiments,etc.,we revealed the structural characteristics and their relations to lithium-ion *** is found that the network formation prevents poly(ethylene oxide)chains from crystallization,which could create sufficient space for segmental tumbling and Li-ion co nductio *** such,the mechanical property is greatly improved with even higher Li-ion mobilities compared to the poly(vinylene carbonate)or poly(ethylene oxide)based SPE analogues.

关键词： ssNMR Lithium-ion mobility Cross-link Solid polymer electrolyte

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A novel transcription factor FnMYB4 regulates pigments metabolism of yellow leaf mutants in Fragaria nilgerrensis

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Horticultural Plant Journal 2024年第5期10卷 1134-1150页

作者： Shu jiang yi ji jingyu Yue Mingqian Wang Yumeifeng jia Li Xue jiajun Lei College of Horticulture Shenyang Agricultural UniversityShenyangLiaoning 110866China

The strawberry species Fragaria nilgerrensis Schlechtendal ex ***,renowned for its distinctive white,fragrant peach-like fruits and strong disease resistance,is an exceptional research *** a previous study,an ethyl methane sulfonate(EMS)mutant library was established for this species,resulting in various yellow leaf *** yellowing materials are not only the ideal materials for basic studies on photosynthesis mechanism,chloroplast development,and molecular regulation of various pigments,but also have important utilization value in ornamental plants *** present study focused on four distinct yellow leaf mutants:mottled yellow leaf(MO),yellow green leaf(YG),light green leaf(LG),and buddha light leaf(BU).The results revealed that the flavonoid content and carotenoid-to-chlorophyll ratio exhibited a significant increase among these mutants,while experiencing a significant decrease in chlorophyll and carotenoid contents compared to the wild type(WT).To clarify the regulatory mechanisms and network relationships underlying these mutants,the RNA-seq and weighted gene coexpression network(WGCNA)analyses were *** results showed flavonoid metabolism pathway was enriched both in MO and YG mutants,while the chlorophyll biosynthesis pathway and carotenoid degradation pathway were only enriched in MO and YG mutants,***,key structural genes and transcription factors were identified on metabolic pathways of three pigments through correlation analyses and quantitative ***,a R2R3-MYB transcription factor,FnMYB4,was confirmed to be positively correlated with flavonoid synthesis through transient overexpression,virus-induced gene silencing(VIGS),and RNA interference(RNAi),accompanying by reoccurrence and attenuation of mutant ***,dual-luciferase(LUC)and yeast one-hybrid assays confirmed the binding of FnMYB4 to the FnFLS and FnF3H promoters,indicating that FnMYB4 positively regulates flavonoid sy

关键词： Fragaria nilgerrensis Mutant Leaf yellowing RNA-seq Flavonoid MYB

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High-performance sodium storage for cobalt phosphide composite array electrodes

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Rare Metals 2024年第8期43卷 3724-3734页

作者： Man Zhang Xiao-Xu Liu Tian-yi ji Yang Li Da-Wei Sheng Shao-Dong Li Pei-Pei Ren Ze-Xiang Shen School of Material Science and Engineering Shaanxi University of Science and TechnologyXi'an 710021China School of Physical and Mathematical Sciences Nanyang Technological UniversitySingapore 637371Singapore

Transition metal phosphides hold great potential as sodium-ion batteries anode materials owing to their high theoretical capacity and modest ***,volume changes and low intrinsic conductivity seriously largely hinder the further development of metal phosphide *** design of phosphide anode materials with reasonable structure is conducive to solving the problems of volume expansion and slow reaction kinetics during the *** this work,a composite material integrating zeolite imidazolate backbone(ZIF) and carbon materials was synthesized by the original growth ***,by the oxidation-phosphating process,CoP nanoarray composites riveted to carbon fiber(CoP@CF) were *** the CoP@CF,CoP nanoparticles are uniformly distributed on ZIF-derived carbon,reducing agglomeration and volume change during *** also provides a highly conductive network for the active material,improving the electrode ***,when evaluated as an anode for sodium-ion batteries,CoP@CF electrode displays enhanced reversible capacity(262 mAh·g^(-1) at 0.1 A·g^(-1)after 100 cycles),which is much better than that of pure CF electrode(57 mAh·g^(-1) at 0.1 A·g^(-1) after 100 cycles)prepared without the addition of *** rate performance of CoP@CF electrode is also superior to that of pure CF electrode at various current densities from 0.05 to1 A·g^(-1).The sodium storage behavior of CoP@CF was revealed by ex-situ X-ray photoelectron spectroscopy,X-ray diffraction,and synchrotron radiation absorption *** method provides a reference for the design and synthesis of anode materials in sodium-ion batteries.

关键词： Cobalt phosphide Array structure Freestanding anodes Sodium-ion batteries

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A novel transcription factor FnMYB4 regulates pigments metabolism of yellow leaf mutants in Fragaria nilgerrensis

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Horticultural Plant Journal 2024年第05期 1134-1150页

作者： Shu jiang yi ji jingyu Yue Mingqian Wang Yumeifeng jia Li Xue jiajun Lei College of Horticulture Shenyang Agricultural University

The strawberry species Fragaria nilgerrensis Schlechtendal ex J. Gay, renowned for its distinctive white, fragrant peach-like fruits and strong disease resistance, is an exceptional research material. In a previous study, an ethyl methane sulfonate(EMS) mutant library was established for this species, resulting in various yellow leaf mutants. Leaf yellowing materials are not only the ideal materials for basic studies on photosynthesis mechanism, chloroplast development, and molecular regulation of various pigments, but also have important utilization value in ornamental plants breeding. The present study focused on four distinct yellow leaf mutants: mottled yellow leaf(MO), yellow green leaf(YG),light green leaf(LG), and buddha light leaf(BU). The results revealed that the flavonoid content and carotenoid-to-chlorophyll ratio exhibited a significant increase among these mutants, while experiencing a significant decrease in chlorophyll and carotenoid contents compared to the wild type(WT). To clarify the regulatory mechanisms and network relationships underlying these mutants, the RNA-seq and weighted gene coexpression network(WGCNA) analyses were employed. The results showed flavonoid metabolism pathway was enriched both in MO and YG mutants, while the chlorophyll biosynthesis pathway and carotenoid degradation pathway were only enriched in MO and YG mutants,respectively. Subsequently, key structural genes and transcription factors were identified on metabolic pathways of three pigments through correlation analyses and quantitative experiments. Furthermore, a R2R3-MYB transcription factor, FnMYB4, was confirmed to be positively correlated with flavonoid synthesis through transient overexpression, virus-induced gene silencing(VIGS), and RNA interference(RNAi),accompanying by reoccurrence and attenuation of mutant phenotype. Finally, dual-luciferase(LUC) and yeast one-hybrid assays confirmed the binding of FnMYB4 to the FnFLS and FnF3H promoters, indicating that FnMYB

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Repetitive transcranial magnetic stimulation in Alzheimer’s disease:effects on neural and synaptic rehabilitation

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Neural Regeneration Research 2025年第2期20卷 326-342页

作者： yi ji Chaoyi Yang Xuerui Pang yibing Yan Yue Wu Zhi Geng Wenjie Hu Panpan Hu Xingqi Wu Kai Wang Department of Neurology The First Affiliated Hospital of Anhui Medical UniversityHefeiAnhui ProvinceChina Anhui Province Key Laboratory of Cognition and Neuropsychiatric Disorders HefeiAnhui ProvinceChina Collaborative Innovation Center of Neuropsychiatric Disorders and Mental Health HefeiAnhui ProvinceChina Institute of Artificial Intelligence Hefei Comprehensive National Science CenterHefeiAnhui ProvinceChina Department of Psychology and Sleep Medicine The Second Affiliated Hospital of Anhui Medical UniversityHefeiAnhui ProvinceChina

Alzheimer’s disease is a neurodegenerative disease resulting from deficits in synaptic transmission and *** Alzheimer’s disease brain tends to be hyperexcitable and hypersynchronized,thereby causing neurodegeneration and ultimately disrupting the operational abilities in daily life,leaving patients *** transcranial magnetic stimulation is a cost-effective,neuro-modulatory technique used for multiple neurological *** the past two decades,it has been widely used to predict cognitive decline;identify pathophysiological markers;promote neuroplasticity;and assess brain excitability,plasticity,and *** has also been applied to patients with dementia,because it can yield facilitatory effects on cognition and promote brain recovery after a neurological ***,its therapeutic effectiveness at the molecular and synaptic levels has not been elucidated because of a limited number of *** study aimed to characterize the neurobiological changes following repetitive transcranial magnetic stimulation treatment,evaluate its effects on synaptic plasticity,and identify the associated *** review essentially focuses on changes in the pathology,amyloidogenesis,and clearance pathways,given that amyloid deposition is a major hypothesis in the pathogenesis of Alzheimer’s *** mechanisms associated with repetitive transcranial magnetic stimulation procedures and different pathways mediating gene transcription,which are closely related to the neural regeneration process,are also ***,we discuss the outcomes of animal studies in which neuroplasticity is modulated and assessed at the structural and functional levels by using repetitive transcranial magnetic stimulation,with the aim to highlight future directions for better clinical translations.

关键词： Alzheimer’s disease amyloid deposition apoptotic mechanisms biomarker neural regeneration neurodegeneration repetitive transcranial magnetic stimulation synaptic plasticity

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战略目标视角下饲料企业人力资源管理的实施路径

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中国饲料 2024年第4期 109-112页

作者：季艺郑州商学院河南郑州451200

饲料企业的各项经济业务活动都需要人的参与和控制,只有保证一定数量和质量的劳动力资源,才能推动饲料企业的正常运营和发展,才能提高饲料企业的经济效益,因此,人力资源成为饲料企业的第一资源。而在战略目标的导向下,人力资源管理需要... 详细信息

饲料企业的各项经济业务活动都需要人的参与和控制,只有保证一定数量和质量的劳动力资源,才能推动饲料企业的正常运营和发展,才能提高饲料企业的经济效益,因此,人力资源成为饲料企业的第一资源。而在战略目标的导向下,人力资源管理需要立足经济业务活动的期望值,为战略目标的顺利达成提供有力的人才支撑。但部分饲料企业的人力资源管理工作存在一定问题,这些问题制约了企业的内部管理成效,需要加以分析,进一步优化人力资源管理的实施路径。

关键词：战略目标饲料企业人力资源管理实施路径

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基于单-多视图优化的足球球员三维姿态和体型估计

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计算机工程 2024年第3期50卷 200-207页

作者：谢欢刘纯平季怡苏州大学计算机科学与技术学院江苏苏州215006

足球比赛场景的三维重建有助于观众自由切换视角,增加了互动性和沉浸感。针对足球比赛场景中的足球球员,提出一种三维姿态和体型估计方法。对球员的多视图图像使用训练好的部分注意力回归的三维人体估计(PARE)模型生成初始的三维姿态和... 详细信息

足球比赛场景的三维重建有助于观众自由切换视角,增加了互动性和沉浸感。针对足球比赛场景中的足球球员,提出一种三维姿态和体型估计方法。对球员的多视图图像使用训练好的部分注意力回归的三维人体估计(PARE)模型生成初始的三维姿态和体型估计,并使用人工标注的二维关节点作为优化目标。单-多视图优化操作利用蒙皮多人线性模型(SMPL)和正交投影的可微性,将球员的三维姿态和体型参数映射到二维关节点,计算其与人工标注之间的差异,再使用神经网络的反向传播算法更新三维姿态和体型参数,持续这些过程直到差异最小化。在自建的足球球员多视图数据集上的实验结果表明,该方法能够有效估计足球球员的三维姿态和体型,与人体网格恢复、在循环中优化SMPL、PARE等方法相比,二维关节点精度在单视图上提高了9.2%~37.5%,在多视图交叉验证中提高了34.9%~54.1%。

关键词：三维姿态和体型估计参数化人体模型单-多视图优化反向传播蒙皮多人线性模型

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学习体验视角下中外高质量在线开放课程比较研究

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现代教育技术 2024年第2期34卷 81-89页

作者：肖婉季一木南京邮电大学教育科学与技术学院江苏南京210023 南京邮电大学计算机学院江苏南京210023

在教育数字化转型背景下,高质量在线开放课程建设对于促进在线教育优质发展、推动高等教育强国建设具有重要意义。然而,当前在线开放课程质量参差不齐,导致实践应用中存在课程完成率低、学生参与度低、学习体验差等问题,亟须重视在线开... 详细信息

在教育数字化转型背景下,高质量在线开放课程建设对于促进在线教育优质发展、推动高等教育强国建设具有重要意义。然而,当前在线开放课程质量参差不齐,导致实践应用中存在课程完成率低、学生参与度低、学习体验差等问题,亟须重视在线开放课程质量研究,以提升学习效果和学习体验。为了解国内和国际高质量在线开放课程的特点,文章基于学习体验视角,首先对20门高质量在线开放课程评论进行文本挖掘,揭示其学习体验的八大构成要素;然后文章从感官体验、内容体验、情感体验和价值体验四个维度对其进行整体比较,并从素质类课程、基础类课程、专业类课程三个方面对其内容体验与体感体验进行了特色分析。文章通过多维度及多层次比较研究,从学习体验视角揭示了中外高质量在线开放课程的共性和差异,以期为我国在线课程的质量提升和国际化传播提供实证参考。

关键词：学习体验高质量在线开放课程 MOOC

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考虑应力梯度的缺口疲劳分散性研究

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塑性工程学报 2024年第1期31卷 223-230页

作者：郑战光谢羿吉孙腾谢昌吉黄增广西大学机械工程学院广西高校现代设计与先进制造重点实验室广西南宁530004 北部湾大学机械与船舶海洋工程学院广西钦州535011 广西机电职业技术学院机械工程学院广西南宁530007

针对缺口部位的微观结构及尺寸导致的疲劳分散差异较大的问题,为准确预测缺口件的疲劳分散性,以矩形截面缺口件为例,采用宏观Chaboche循环塑性本构模型与细观晶体循环塑性本构模型相结合的有限元子模型方法,并考虑缺口效应,提出了以应... 详细信息

针对缺口部位的微观结构及尺寸导致的疲劳分散差异较大的问题,为准确预测缺口件的疲劳分散性,以矩形截面缺口件为例,采用宏观Chaboche循环塑性本构模型与细观晶体循环塑性本构模型相结合的有限元子模型方法,并考虑缺口效应,提出了以应力梯度影响因子、等效应力与纵向应变为变量的统计标准差作为疲劳指示因子FIP_(notch)。在不同位移载荷、位移载荷比和缺口直径大小情况下将疲劳指示因子FIP_(notch)与经典的Fatemi-Socie疲劳指示因子FIP FS进行疲劳分散性的比较与分析。结果表明:疲劳指示因子FIP_(notch)均能很好地预测不同位移载荷、位移载荷比和缺口直径下的缺口疲劳分散性,且比经典的FIP FS方法有更高的精度与适用性。

关键词：疲劳分散性晶体塑性裂纹萌生驱动力疲劳指示因子

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基于倾向性匹配的胆汁反流对胃黏膜影响及CDX2表达分析

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世界华人消化杂志 2024年第4期32卷 261-266页

作者：季怡帆楼晓军浙江中医药大学嘉兴学院联合培养基地浙江省嘉兴市314000 浙江中医药大学附属嘉兴市中医医院消化内科浙江省嘉兴市314000

背景胆汁反流的发病率逐年上升,其对胃粘膜癌前病变的作用存在争议.拟采用倾向性评分匹配方法减少混杂因素的干扰,以探讨胆汁反流对胃黏膜的影响及作用机制.目的通过回顾性研究探讨胆汁反流对胃粘膜损伤的作用,评估其对组织病理学的影... 详细信息

背景胆汁反流的发病率逐年上升,其对胃粘膜癌前病变的作用存在争议.拟采用倾向性评分匹配方法减少混杂因素的干扰,以探讨胆汁反流对胃黏膜的影响及作用机制.目的通过回顾性研究探讨胆汁反流对胃粘膜损伤的作用,评估其对组织病理学的影响以及分子表达.方法收集2023-07/2023-12嘉兴市中医院155例慢性胃炎伴胆汁反流患者,随机选取同期227例慢性胃炎患者为对照组.通过倾向性评分匹配(propensity score matching,PSM)调整混杂因素后,依据新悉尼系统行组织学分级,并以免疫组化方法检测胃粘膜尾型同源框基因2(caudal type homeobox 2,CDX2)表达,分析两组胃粘膜组织病理学改变以及与CDX2表达相关性.结果PSM 1:1匹配后两组基线资料无统计学差异,匹配后慢性胃炎伴胆汁反流组胃黏膜慢性炎症反应、炎症活动性、萎缩、肠上皮化生(intestinal metaplasia,IM)严重程度均高于慢性胃炎组,差异有统计学意义(P<0.05).Spearman相关性检验结果显示CDX2阳性表达与IM显著正相关(r=0.629,P<0.01),与萎缩、胆汁反流呈正相关(r=0.269,r=0.282,P<0.01).结论胆汁反流可加重胃黏膜损伤,是胃粘膜炎症反应、萎缩、IM的危险因素.同时胆汁反流可能通过影响CDX2表达参与IM过程.

关键词：胆汁反流胃粘膜肠上皮化生 CDX2 倾向性评分匹配

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