检索结果-南通市图书馆

Novel high-voltage cathode for aqueous zinc ion batteries:Porous K_(0.5)VOPO_(4)·1.5H_(2)O with reversible solid-solution intercalation and conversion storage mechanism

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2024年第6期93卷 71-78,I0003页

作者： Liyu Wang mingliang Zhao Xiaoyu Zhang Menghua Wu yu Zong yu Chen Xinliang Huang Mingjie Xing Xin Ning Wen Wen Daming Zhu Xiaochuan Ren Industrial Research Institute of Nonwovens&Technical Textiles College of Textiles&ClothingShandong Engineering Research Center for Specialty Nonwoven MaterialsQingdao UniversityQingdao 266071ShandongChina Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201204China

Cathode materials that possess high output voltage,as well as those that can be mass-produced using facile techniques,are crucial for the advancement of aqueous zinc-ion battery(ZIBs)applications,Herein,we present for the first time a new porous K_(0.5)VOPO_(4)·1.5H_(2)O polyanionic cathode(P-KIVP)with high output voltage(above 1.2 V)that can be manufactured at room temperature using straightforward coprecipitation and etching techniques.The P-KVP cathode experiences anisotropic crystal plane expansion via a sequential solid-solution intercalation and phase co nversion pathway throughout the Zn^(2+)storage process,as confirmed by in-situ synchrotron X-ray diffraction and ex-situ X-ray photoelectron spectroscopy.Similar to other layered vanadium-based polyanionic materials,the P-KVP cathode experiences a progressive decline in voltage during the cycle,which is demonstrated to be caused by the irreversible conversion into amorphous VO_(x).By introducing a new electrolyte containing Zn(OTF)_(2) to a mixed triethyl phosphate and water solution,it is possible to impede this irreversible conversion and obtain a high output voltage and longer cycle life by forming a P-rich cathode electrolyte interface layer.As a proof-of-concept,the flexible fiber-shaped ZIBs based on modified electrolyte woven into a fabric watch band can power an electronic watch,highlighting the application potential of P-KVP cathode.

关键词： Aqueous zinc ion battery Cathode Porous material High voltage platform In-situ synchrotron X-ray diffraction

Copper fluoride as a low-cost sodium-ion battery cathode with high capacity

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2022年第3期33卷 1435-1438页

作者： Yiming Dai Qiujie Chen Chenchen Hu Yangyang Huang Wangyan Wu mingliang yu Dan Sun Wei Luo Institute of New Energy for Vehicles School of Materials Science and EngineeringTongji UniversityShanghai 201804China CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China Haixi Institute Xiamen Institute of Rare Earth MaterialsChinese Academy of SciencesXiamen 361021China

Sodium-ion batteries (SIBs) are promising alternatives to lithium-ion batteries (LIBs) for large-scale energy storage considering the abundance and low cost of Na-containing resources. However, the energy density of SIBs has been limited by the typically low specific capacities of traditional intercalation-based cathodes. Metal fluorides, in contrast, can deliver much higher capacities based on multi-electron conversion reactions. Among metal fluorides, CuF_(2) presents a theoretical specific capacity as high as 528 mAh/g while its Na-ion storage mechanism has been rarely reported. Here, we report CuF_(2) as a SIB cathode, which delivers a high capacity of 502 mAh/g but suffers from poor electrochemical reversibility. As a solution, we adjust the cell configuration by inserting a carbon-coated separator, which hinders the transportation of dissolved Cu ions and improves the reversibility of the CuF_(2) cathode. By using in-situ XRD measurements and theoretical calculation, we propose that a one-step conversion reaction occurs during the discharge process, and a reconversion reaction competes with the oxidization of Cu to dissolved Cu ion during the charge process.

关键词： Sodium-ion battery Copper fluoride Cathode Energy density Conversion reaction

Identification and expression analysis of chlorogenic acid biosynthesis key gene PpHCT in peach

在线全文

学校读者我要写书评

暂无评论

Horticultural Plant Journal 2023年第4期9卷 670-680页

作者： Ziwen Su Meng Sun Zhixiang Cai Shaolei Guo Jiyao Li Bintao Zhao Zhijun Shen Ruijuan Ma Juan Yan mingliang yu College of Horticulture Nanjing Agricultural UniversityNanjingJiangsu 210095China Institute of Pomology Jiangsu Academy of Agricultural Sciences/Jiangsu Key Laboratory for Horticultural Crop Genetic ImprovementNanjingJiangsu 210014China

Shikimic acid/quinic acid hydroxy cinnamyl transferase(HCT)is one of the key enzymes in the phenylpropanoid pathway.However,the role of the HCT gene in chlorogenic acid(CGA)biosynthesis in peach fruit remains unclear.For this,we identified the accumulation pattern of CGA in four peach cultivars,cloned and characterized 11 PpHCT gene members,and further analyzed the expression patterns of these PpHCT genes during fruit development.The contents of CGAs in the four peach cultivars all exhibited a trend of increasing and then decreasing during the fruit growth and development.Moreover,the contents of CGAs in the peel and flesh were tissue-specific.Gene structure analysis indicated that the PpHCT genes were highly conserved,containing two exons and one intron.The protein structure analysis demonstrated that the PpHCT proteins contained two conserved motifs(HXXXD,DFGWG)and a transferase domain(PF02458),which belonged to the BAHD acyltransferase family.The cis-acting element analysis suggested that the promoters of PpHCT genes contained many light-related,hormone-related,stress-related,tissue-specific,and circadian-related elements,and they could participate in a variety of biological processes.Phylogenetic analysis showed that the HCT proteins of peach were closely related to the HCT proteins of plum and had a close evolutionary relationship.The qRT-PCR analysis indicated that the expression levels of PpHCT1 and PpHCT2 showed an opposite trend to the accumulation of CGA,whereas the expression levels of PpHCT4,PpHCT5,PpHCT7,PpHCT8,and PpHCT11 demonstrated the same trend as CGA accumulation.It was worth noting that only PpHCT4 and PpHCT5 were highly expressed in the two high-CGA cultivars but showed low levels of expression in the two low-CGA cultivars.Therefore,it was hypothesized that these two genes might be key genes to the synthesis of CGA in peach fruit.Those findings provide a theoretical basis for further study on the biological functions of the HCT gene and help to reveal the molecular mechanism of CGA.

关键词： Prunus persica(L.) Chlorogenic acid PpHCT Bioinformatics analysis Gene expression

在线全文

学校读者我要写书评

暂无评论

绿色设计视域下茶渣再生产品设计与应用实践

包装工程 2024年第2期45卷 331-338,364页

作者：赵晨马云余明亮西安工程大学西安710048

目的探究基于绿色设计理念影响下废弃茶渣在再生和循环利用中的相关产品设计及其具象应用实践的体现。方法以绿色环保型产品设计构思作为出发点,运用绿色设计更新的5R原则作为理论支撑依据并总结归纳出20项用户设计评价指标。通过使用... 详细信息

目的探究基于绿色设计理念影响下废弃茶渣在再生和循环利用中的相关产品设计及其具象应用实践的体现。方法以绿色环保型产品设计构思作为出发点,运用绿色设计更新的5R原则作为理论支撑依据并总结归纳出20项用户设计评价指标。通过使用SPSS将绿色感知价值所对应的废弃茶渣、所用材料的特性,以及用户使用产品的期望型需求等相关的20项因子进行主成分分析,分别得到3项设计要点(绿色价值设计要点、情感价值设计要点、形象价值设计要点)以指导设计及应用实践。结论立足用户日常需求的绿色产品设计,通过3项设计要点的有效数据和具体分析,茶渣再生设计的系列产品主要围绕废弃茶渣和辅助环保型材料进行设计和实践应用。最终通过模糊综合评价方法对用户进行系列产品的反馈验证,从而使产品的较高实现性和可用性能可较好地达到用户满意度。

关键词：绿色设计理念茶渣再生设计 5R原则绿色感知价值因子分析产品应用实践

Boosting redox activity on MXene-induced multifunctional collaborative interface in high Li2S loading cathode for high-energy Li-S and metallic Li-free rechargeable batteries

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2019年第10期28卷 183-191页

作者： Zhiyu Wang Nan Zhang mingliang yu Junshan Liu Song Wang Jieshan Qiu State Key Lab of Fine Chemicals Liaoning Key Lab for Energy Materials and Chemical EngineeringPSU-DUT Joint Center for Energy ResearchDalian University of TechnologyDalian 116024LiaoningChina Key Laboratory for Micro/Nano Technology and System of Liaoning Province Dalian University of TechnologyDalian 116023LiaoningChina College of Chemical Engineering Beijing University of Chemical TechnologyBeijing 100029China

Use of metallic Li anode raises serious concerns on the safety and operational performance of Li-S batteries due to uncontrolled hazard of Li dendrite formation, which is difficultly eliminated as long as the metallic Li exists in the cells. Pairing lithium sulfide (Li2S) cathode with currently available metallic Lifree high-capacity anodes offers an alternative solution to this challenge. However, the performance of Li2S cathode is primarily restricted by high activation barrier upon initial charge, low active mass utilization and sluggish redox kinetics. Herein, a MXene-induced multifunctional collaborative interface is proposed to afford superb activity towards redox solid-liquid/liquid-liquid phase transformation, strong chemisorption, high conductivity and fast ionic/charge transport in high Li2S loading cathode. Applying collaborative interface effectively reduces initial voltage barrier of Li2S activation and regulates the kinetic behavior of redox polysulfide conversion. Therefore, stable operation of additive-free Li2S cathode with high areal capacities at high Li2S loading up to 9 mg cm^-2 can be achieved with less sacrifice of high capacity and rate capability in Li-S batteries. Rechargeable metallic Li-free batteries are successfully constructed by pairing this high-performance Li2S cathode with high-capacity metal oxide anodes, which delivers superior energy density to current Li-ion batteries.

关键词： Lithium sulfide High-capacity cathode Interface MXene Li-S batteries

在线全文

学校读者我要写书评

暂无评论

数字经济发展影响乡村振兴质量的实证研究

科技进步与对策 2024年第12期41卷 47-57页

作者：刘钒于子淳邓明亮武汉大学马克思主义学院武汉大学经济与管理学院湖北武汉430072

乡村振兴是实现中国式现代化的必然要求,提升数字经济发展水平可为高质量乡村振兴提供良好条件。从机制层面讨论数字经济影响乡村振兴质量的机理,采用2011—2020年中国内地30个省级行政区面板数据,运用熵权TOPSIS法分别测度乡村振兴质... 详细信息

乡村振兴是实现中国式现代化的必然要求,提升数字经济发展水平可为高质量乡村振兴提供良好条件。从机制层面讨论数字经济影响乡村振兴质量的机理,采用2011—2020年中国内地30个省级行政区面板数据,运用熵权TOPSIS法分别测度乡村振兴质量与数字经济发展指数,并对二者关系进行实证检验。结果显示:数字经济发展对乡村振兴质量具有明显提升作用;科技创新是数字经济提升乡村振兴质量的重要中介变量;异质性分析结果表明,中部和东北地区数字经济提升乡村振兴质量的效果最显著,其次是西部地区和东部地区。因此,必须坚定不移地将数字经济作为新时代提升乡村振兴质量的重要抓手,加快乡村数字基础设施建设,加大数字科技成果向乡村转移转化,加速数字科技与乡村产业、乡村治理的融合,加强数字科技在乡村的多场景多领域应用,不断提升乡村振兴质量。

关键词：数字经济乡村振兴质量科技创新

A centromere map based on super pan-genome highlights the structure and function of rice centromeres

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Plant Biology 2024年第2期66卷 196-207页

作者： Yang Lv Congcong Liu Xiaoxia Li yueying Wang Huiying He Wenchuang He Wu Chen Longbo Yang Xiaofan Dai Xinglan Cao Xiaoman yu Jiajia Liu Bin Zhang Hua Wei Hong Zhang Hongge Qian Chuanlin Shi yue Leng Xiangpei Liu mingliang Guo Xianmeng Wang Zhipeng Zhang Tianyi Wang Bintao Zhang Qiang Xu Yan Cui Qianqian Zhang Qiaoling yuan Noushin Jahan Jie Ma Xiaoming Zheng Yongfeng Zhou Qian Qian Longbiao Guo Lianguang Shang State Key Laboratory of Rice Biology China National Rice Research InstituteHangzhou 310006China Shenzhen Branch Guangdong Laboratory of Lingnan Modern AgricultureGenome Analysis Laboratory of the Ministry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518120China Yazhouwan National Laboratory No.8 Huanjin RoadYazhou DistrictSanya City 572024China National Key Facility for Crop Gene Resources and Genetic Improvement Institute of Crop ScienceChinese Academy of Agricultural SciencesBeijing 100081China

Rice(Oryza sativa)is a significant crop worldwide with a genome shaped by various evolutionary factors.Rice centromeres are crucial for chromosome segregation,and contain some unreported genes.Due to the diverse and complex centromere region,a comprehensive understanding of rice centromere structure and function at the population level is needed.We constructed a high-quality centromere map based on the rice super pangenome consisting of a 251-accession panel comprising both cultivated and wild species of Asian and African rice.We showed that rice centromeres have diverse satellite repeat CentO,which vary across chromosomes and subpopulations,reflecting their distinct evolutionary patterns.We also revealed that long terminal repeats(LTRs),especially young Gypsy-type LTRs,are abundant in the peripheral CentO-enriched regions and drive rice centromere expansion and evolution.Furthermore,high-quality genome assembly and complete telomere-to-telomere(T2T)reference genome enable us to obtain more centromeric genome information despite mapping and cloning of centromere genes being challenging.We investigated the association between structural variations and gene expression in the rice centromere.A centromere gene,OsMAB,which positively regulates rice tiller number,was further confirmed by expression quantitative trait loci,haplotype analysis and clustered regularly interspaced palindromic repeats(CRISPR)/CRISPR-associated protein9 methods.By revealing the new insights into the evolutionary patterns and biological roles of rice centromeres,our finding will facilitate future research on centromere biology and crop improvement.

关键词： centromere super pan-genome CentoO satellite repeat rice

Uncovering key salt-tolerant regulators through a combined eQTL and GWAS analysis using the super pan-genome in rice

在线全文

学校读者我要写书评

暂无评论

National Science Review 2024年第4期11卷 55-69页

作者： Hua Wei Xianmeng Wang Zhipeng Zhang Longbo Yang Qianqian Zhang Yilin Li Huiying He Dandan Chen Bin Zhang Chongke Zheng yue Leng Xinglan Cao Yan Cui Chuanlin Shi Yifan Liu Yang Lv Jie Ma Wenchuang He Xiangpei Liu Qiang Xu Qiaoling yuan Xiaoman yu Tianyi Wang Hongge Qian Xiaoxia Li Bintao Zhang Hong Zhang Wu Chen mingliang Guo Xiaofan Dai yuexing Wang Xiaoming Zheng Longbiao Guo Xianzhi Xie Qian Qian Lianguang Shang Shenzhen Branch Guangdong Laboratory of Lingnan Modern AgricultureGenome Analysis Laboratory of the Ministry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural Sciences Institute of Wetland Agriculture and Ecology Shandong Academy of Agricultural Sciences State Key Laboratory of Rice Biology China National Rice Research Institute National Key Facility for Crop Gene Resources and Genetic Improvement Institute of Crop Science Chinese Academy of Agricultural Sciences Yazhouwan National Laboratory

For sessile plants, gene expression plays a pivotal role in responding to salinity stress by activating or suppressing specific genes. However, our knowledge of genetic variations governing gene expression in response to salt stress remains limited in natural germplasm. Through transcriptome analysis of the Global Mini-Core Rice Collection consisting of a panel of 202 accessions, we identified 22 345 and 27 610expression quantitative trait loci associated with the expression of 7787 and 9361 e Genes under normal and salt-stress conditions, respectively, leveraging the super pan-genome map. Notably, combined with genome-wide association studies, we swiftly pinpointed the potential candidate gene STG5—a major salt-tolerant locus known as q STS5. Intriguingly, STG5 is required for maintaining Na+/K+homeostasis by directly regulating the transcription of multiple members of the Os HKT gene family. Our study sheds light on how genetic variants influence the dynamic changes in gene expression responding to salinity stress and provides a valuable resource for the mining of salt-tolerant genes in the future.

关键词： super pan-genome expression quantitative trait loci GWAS salt tolerance rice

S-RPS-SPS并联机构稳定平台的运动学分析

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

机械传动 2024年第3期48卷 81-85,117页

作者：李明亮佘世刚俞竹青常州大学机械与轨道交通学院江苏常州213100

舰船在海上会受到海浪、海风以及气流等环境影响,从而导致原本需要在稳定环境下工作的器材受到严重干扰,如起吊平台、雷达信号捕捉等。针对以上问题,提出了S-RPS-SPS并联机构稳定平台,该平台可以实现绕X轴横滚角的旋转以及绕Y轴俯仰角... 详细信息

舰船在海上会受到海浪、海风以及气流等环境影响,从而导致原本需要在稳定环境下工作的器材受到严重干扰,如起吊平台、雷达信号捕捉等。针对以上问题,提出了S-RPS-SPS并联机构稳定平台,该平台可以实现绕X轴横滚角的旋转以及绕Y轴俯仰角的旋转,从而间接消除船体在这两轴上的转动。在SolidWorks软件中建立该并联机构的模型并验证了自由度;选择位姿逆解的方法计算出两条驱动杆长度与动平台位姿角度之间的关系式,在该机构的动平台旋转角度和驱动杆伸缩长度范围内输入不同的角度,得到两组数据,对比了其误差;把计算公式、旋转角度范围以及坐标在Matlab软件中通过算法进行仿真,验证了动平台位姿的准确性。仿真结果表明,该机构在运动学方面的精度和可靠性都得到了很好的保证。

关键词：并联机构稳定平台位姿逆解 Matlab仿真