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Intensive management enhances mycorrhizal respiration but decreases free-living microbial respiration by affecting microbial abundance and community structure in Moso bamboo forest soils

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Pedosphere 2024年第2期34卷 508-519页

作者： Wenhao JIN Jiangfei GE Shuai SHAO Liyuan PENG jiajia XING Chenfei LIANG Junhui CheN Qiufang XU Hua QIN State Key Laboratory of Subtropical Silviculture Zhejiang A&F UniversityHangzhou 311300China School of Environmental and Resource Sciences Zhejiang A&F UniversityHangzhou 311300China

Intensive management is known to markedly alter soil carbon(C)storage and turnover in Moso bamboo forests compared with extensive ***,the effects of intensive management on soil respiration(RS)components remain *** study aimed to evaluate the changes in different RScomponents(root,mycorrhizal,and free-living microorganism respiration)in Moso bamboo forests under extensive and intensive management practices.A1-year in-situ microcosm experiment was conducted to quantify the RScomponents in Moso bamboo forests under the two management practices using mesh screens of varying *** results showed that the total RSand its components exhibited similar seasonal variability between the two management *** with extensive management,intensive management significantly increased cumulative respiration from mycorrhizal fungi by 36.73%,while decreased cumulative respiration from free-living soil microorganisms by 8.97%.Moreover,the abundance of arbuscular mycorrhizal fungi(AMF)increased by 43.38%,but bacterial and fungal abundances decreased by 21.65%and 33.30%,respectively,under intensive *** management practices significantly changed the bacterial community composition,which could be mainly explained by soil pH and available *** fungi and intensive management affected the interrelationships between bacterial *** equation modeling indicated that intensive management changed the cumulative RSby elevating AMF abundance and lowering bacterial *** concluded that intensive management reduced the microbial respiration-derived C loss,but increased mycorrhizal respiration-derived C loss.

关键词： arbuscular mycorrhizal fungi extensive management microbial co-occurrence network root respiration soil organic C soil respiration structural equation model

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Solvent-Resistant Wearable Triboelectric Nanogenerator for Energy-Harvesting and Self-Powered Sensors

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Energy & Environmental Materials 2024年第5期7卷 380-390页

作者： Yongtao Yu Yuelin Yu Hongyi Wu Tianshuo Gao Yi Zhang jiajia Wu Jiawei Yan Jian Shi Hideaki Morikawa Chunhong Zhu Graduate School of Medicine Science and Technology Shinshu University Institute for Fiber Engineering (IFES) Interdisciplinary Cluster for Cutting Edge Research (ICCER) Shinshu University Faculty of Textile Science and Technology Shinshu University

Wearable triboelectric nanogenerators （TENGs） have attracted attention owing to their ability to harvest energy from the surrounding environment without maintenance. herein, polyetherimide–Al2O3（PAl） and polyvinylidene fluoride-co-hexafluoropropylene （PVDF-HFP, PH） nanofiber membranes were used as tribo-positive and tribo-negative materials, respectively. Phytic aciddoped polyaniline （PANI）/cotton fabric （PPCF） and ethylenediamine （EDA）-crosslinked PAl （EPAl） nanofiber membranes were used as triboelectrode and triboencapsulation materials, respectively. The result showed that when the PAl–PH-based TENG was shaped as a circle with a radius of 1 cm, under the pressure of 50 N, and the frequency of 0.5 Hz, the open-circuit voltage (Voc)and short-circuit current (Isc) reached the highest value of 66.6 V and-93.4to 110.1 nA, respectively. Moreover, the PH-based TENG could be used as a fabric sensor to detect fabric composition and as a sensor-inductive switch for light bulbs or beeping warning devices. When the PAl–PH-based TENG was shaped as a 5×5 cm2rectangle, a 33μF capacitor could be charged to15 V in 28 s. Interestingly, compared to PAl nanofiber membranes, EPAl nanofiber membranes exhibited good dyeing properties and excellent solvent resistance. The PPCF exhibited <5%resistance change after washing,bending, and stretching.

关键词： energy-harvesting power supply sensors solvent-resistant wearable triboelectric nanogenerator

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江苏省体教专业网球专项教学内容调查与分析

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体育科技文献通报 2018年第2期26卷 99-99,110页

作者：何佳嘉无锡科技职业学院江苏无锡214028

主要针对江苏省体教专业网球专项教学内容进行调查分析,并针对调查结果提出若干发展建议,提出的发展建议为:科学选用网球教材;科学配置理论实践课程;灵活设置网球教学内容。

关键词：江苏省体教专业网球教学内容

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Mobile-ionic FETs with ultra-scaled amorphous dielectric achieving ferroelectric behaviors and sub-kT/q swing with temperature down to 77 K

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Science China(Information Sciences) 2024年第1期67卷 312-313页

作者： Huan LIU Qiyu YANG Chengji JIN jiajia CheN Lulu CHOU Xiao YU Yan LIU Genquan HAN Research Center for Intelligent Chips School of Microelectronics Xidian University

The steep subthreshold swing (SS) could be achieved in negative capacitance field-effect transistors (NCFET) to reduce power dissipation in modern electronics. Polycrystalline Hf O2-based ferroelectric materials have attracted great interest due to their better thickness scalability and CMOS process compatibility [1].

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一种新型宽带圆极化UHF RFID读写器天线

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重庆邮电大学学报（自然科学版） 2015年第5期27卷 620-625页

作者：王斌何佳佳孔祥吉重庆邮电大学光电工程学院重庆400065

针对超高频射频识别(ultra high frequency radio frequency identification,UHF RFID)技术的发展需求,设计了一款覆盖UHF RFID全频段(840—960 MHz)的圆极化读写器天线。天线采用简单的平面缝隙贴片结构,利用π型线耦合馈电,获得了良... 详细信息

针对超高频射频识别(ultra high frequency radio frequency identification,UHF RFID)技术的发展需求,设计了一款覆盖UHF RFID全频段(840—960 MHz)的圆极化读写器天线。天线采用简单的平面缝隙贴片结构,利用π型线耦合馈电,获得了良好的宽带圆极化性能。重点分析了天线的宽带圆极化辐射机理和双向圆极化波的形成过程。天线的仿真和测试结果表明,S11≤-13 d B的阻抗带宽为200 MHz,3 d B轴比(axial-ratio,AR)带宽达到175MHz,频段内增益均大于3.4 d Bi,且顶点的右旋圆极化(right-handed circular polarization,RHCP)电平和左旋圆极化(left-handed circular polarization,LHCP)电平差值均大于17 d B,具有较好的宽带性和抗干扰能力。仿真结果和实验测试结果的一致性良好,满足了UHF RFID读写器天线宽频带、高增益的应用要求。

关键词：读写器天线宽带圆极化超高频射频识别技术(UHF RFID)

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High-performance wearable bimetallic nanowire-assisted composite foams for efficient electromagnetic interference shielding,infrared stealth,and piezoresistive sensing

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Nano Research 2024年第7期17卷 6757-6765页

作者： Tianyi Hang Lijie Zhou Chenhui Xu Yiming Chen Jiahui Shen jiajia Zheng Pingan Yang Xiping Li heng Luo Guoxiu Tong Key Laboratory of Urban Rail Transit Intelligent Operation and Maintenance Technology and Equipment of Zhejiang Province College of EngineeringZhejiang Normal UniversityJinhua 321004China School of Automation Chongqing University of Posts and TelecommunicationsChongqing 400065China State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410083China Key Laboratory of the Ministry of Education for Advanced Catalysis Materials College of Chemistry and Materials ScienceZhejiang Normal UniversityJinhua 321004China

With the accelerated development of modern detection and communication technology,the multifunctional wearable materials with excellent electromagnetic interference(EMI)shielding,infrared stealth,and human monitoring for improving military combat capability have received extensive *** this work,the lightweight melamine foam(MF)@silver nanowires(AgNWs)-iron nanowires(FeNWs)(AgFe-MF)was fabricated by a vacuum-assisted dip-coating *** to the porous structure and synergistic electrical and magnetic losses,this lightweight(0.115 g/cm^(3))composite foam with an ultra-low filler content(0.62 vol.%)exhibited an ideal EMI shielding efficiency of 38.4 *** the other hand,the AgFe-MF realized a powerful multifunctional *** surface saturation temperature of the AgFe-MF reached 94.2℃under a low applied voltage of 1.8 V and remained extremely fast heating and cooling response and terrific working stability,resulting in excellent infrared stealth and camouflage ***,taking virtues of the elastic porous conductive architecture,the AgFe-MF was utilized as a piezoresistive sensor exhibiting board compressive interval of 0–1.62 kPa(50%strain)with a good sensitivity of 0.57 kPa^(−1).This work will provide new ideas and insights for developing multifunctional wearable devices in the fields of EMI shielding,thermal management,and piezoresistive sensing.

关键词： metal nanowires porous foams electromagnetic interference shielding infrared stealth wearable sensors

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新零售企业供应链协同对绩效的作用机理研究

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商业经济研究 2020年第19期 116-119页

作者：李应丁露何佳佳合肥工业大学管理学院安徽合肥230009

本文根据新零售企业供应链的特性,构建了供应链协同能力对绩效影响的理论模型,并做出互惠互利、相互信任在供应链协同与绩效之间的中介作用的假设。以安徽省以及周边城市的新零售企业及其供应链上合作企业为调查对象,利用结构方程模型... 详细信息

本文根据新零售企业供应链的特性,构建了供应链协同能力对绩效影响的理论模型,并做出互惠互利、相互信任在供应链协同与绩效之间的中介作用的假设。以安徽省以及周边城市的新零售企业及其供应链上合作企业为调查对象,利用结构方程模型对其进行实证研究。研究结果表明:供应链协同正向影响运营绩效,但对关系绩效不能产生直接正向的影响;互惠互利、相互信任在其中发挥部分中介作用;因此企业可以通过加强供应链协同能力以达到提升运营绩效的目的;在合作过程中要充分重视与合作企业建立互惠互利、相互信任的关系来提高关系绩效。

关键词：新零售供应链协同结构方程模型运营绩效关系绩效

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采用改进的YOLOv5s检测花椒簇

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农业工程学报 2023年第16期39卷 283-290页

作者：徐杨熊举举李论彭佑菊何佳佳贵州大学大数据与信息工程学院贵阳550025 贵阳铝镁设计研究院有限公司贵阳550025

为实现花椒簇的快速准确检测,该研究提出了一种基于改进YOLOv5s的花椒簇检测模型。首先,使用MBConv(MobileNetV3 block convolution,MBConv)模块和基于ReLU的轻量级自注意力机制优化了EfficientViT网络,用其代替YOLOv5s的主干,减少模型... 详细信息

为实现花椒簇的快速准确检测,该研究提出了一种基于改进YOLOv5s的花椒簇检测模型。首先,使用MBConv(MobileNetV3 block convolution,MBConv)模块和基于ReLU的轻量级自注意力机制优化了EfficientViT网络,用其代替YOLOv5s的主干,减少模型的参数量、增强模型对重要特征的表达能力。其次,在模型的训练过程中采用了OTA(optimal transport assignment)标签分配策略,优化训练中的标签分配结果。最后,使用WIoU损失函数对原损失函数CIoU进行替换,提高锚框的质量。试验结果表明,改进YOLOv5s模型的平均准确度均值(mean average precision,mAP)为97.3%、参数量为5.9 M、检测速度为131.6帧/s。相较于YOLOv5s模型,mAP提升1.9个百分点、参数量降低15.7%、检测速度提高14.5%。结果表明,该研究提出的改进YOLOv5s模型准确度高、参数量低、检测速度快,可实现对花椒簇的有效检测。

关键词：图像处理深度学习目标检测 YOLOv5 自注意力机制花椒簇

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Constructing electron-blocking grain boundaries in garnet to suppress lithium dendrite growth

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Journal of Advanced Ceramics 2024年第2期13卷 166-175页

作者： Xing Xiang Zecheng Fang Congkun Du Zhenzhen Zhao jiajia Chen Yanhua Zhang Huihu Wang Chenhuinan Wei Fei Chen Qiang Shen Hubei Provincial Key Laboratory of Green Materials for Light Industry Hubei University of TechnologyWuhan 430068China Hubei Longzhong Laboratory Wuhan University of Technology Xiangyang Demonstration ZoneXiangyang 441000China Collaborative Innovation Center of Green Light-weight Materials and Processing Hubei University of TechnologyWuhan 430068China New Materials and Green Manufacturing Talent Introduction and Innovation Demonstration Base Hubei University of TechnologyWuhan 430068China State Key Lab of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

Li_(7)La_(3)Zr_(2)O_(12)(LLZO)is considered as a promising solid-state electrolyte due to its high ionic conductivity,wide electrochemical window,and excellent electrochemical ***,its application in solid-state lithium metal batteries(SSLMBs)is impeded by the growth of lithium dendrites in LLZO due to some reasons such as its high electronic *** this study,lithium fluoride(LiF)was introduced into Ta-doped LLZO(LLZTO)to modify its grain boundaries to enhance the performance of SSLMBs.A nanoscale LiF layer was uniformly coated on the LLZTO grains,creating a threedimensional continuous electron-blocking network at the grain *** from the electronic insulator LiF and the special structure of the modified LLZTO,the symmetric cells based on LLZO achieved a high critical current density(CCD)of 1.1 mA·cm^(-2)(in capacity-constant mode)and maintained stability over 2000 h at 0.3 mA·cm^(-2).Moreover,the full cells combined with a LiFePO_(4)(LFP)cathode,demonstrated excellent cycling performance,retaining 97.1% of capacity retention after 500 cycles at 0.5 ***,this work provides a facile and effective approach for preparing a modified electrolyte suitable for high-performance SSLMBs.

关键词： solid electrolyte garnet lithium dendrite microstructure solid-state batteries

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Application and prospects of proteomic technology in inflammation:a review

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Food Science and Human Wellness 2024年第5期13卷 2373-2385页

作者： Senye Wang Yanhai Chu jiajia Yuan Yiqi Li Zhenhua Liu Xiaoyu Chen Wenyi Kang National R&D Center for Edible Fungus Processing Technology Henan UniversityKaifeng 475004China Functional Food Engineering Technology Research Center Kaifeng 475004China Joint International Research Laboratory of Food&Medicine Resource Function Kaifeng 475004China College of Agriculture Henan UniversityKaifeng 475004China

Proteomics is a new technology that has been widely applied in the field of life and health *** effectively addresses issues related to the impact of dietary structure on organs,tissues,and cells,as well as the changes in proteins in various organs,tissues,and cells under disease *** differential proteins identified through proteomics can serve as disease biomarkers and target proteins affecting health and can be used for disease diagnosis and health *** this paper,the application of proteomics in the field of infl ammation in recent years was summarized,especially in the therapeutic target and mechanism of action,which opens up a new way for more effective prevention,diagnosis,and treatment of inflammation,and provides medical protection for human life and health.

关键词： Proteomics technology Inflammation Biomarkers Potential target Signaling pathway

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