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Carbon Dots-Modified Hollow Mesoporous Photonic Crystal Materials for Sensitivityand Selectivity-Enhanced Sensing of Chloroform Vapor

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Nano-Micro Letters 2025年第4期17卷 381-398页

作者： Junchen liu Ji liu Zhipeng li liupeng Zhao Tianshuang Wang Xu Yan Fangmeng liu xiaomin li Qin li Peng Sun Geyu Lu Dongyuan Zhao State Laboratory On Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchun 130012People’s Republic of China Department of Chemistry and Laboratory of Advanced Materials Shanghai Key Laboratory of Molecular Catalysis and Innovative MaterialsState Key Laboratory of Molecular Engineering of PolymersCollaborative Innovation Center of Chemistry for Energy Materials(2011-iChEM)College of Chemistry and MaterialsFudan UniversityShanghaiPeople’s Republic of China School of Engineering and Built Environment Griffith UniversityNathanQLD 4111Australia

Chloroform and other volatile organic pollutants have garnered widespread attention from the public and researchers,because of their potential harm to the respiratory system,nervous system,skin,and ***,research on chloroform vapor sensing is still in its early stages,primarily due to the lack of specific recognition *** we report a mesoporous photonic crystal sensor incorporating carbon dots-based nanoreceptor(HMSS@CDs-PCs)for enhanced chloroform *** colloidal PC packed with hollow mesoporous silica spheres provides an interconnected ordered macro-meso-hierarchical porous structure,ideal for rapid gas sensing utilizing the photonic bandgap shift as the readout *** as-synthesized CDs with pyridinic-N-oxide functional groups adsorbed in the hollow mesoporous silica spheres are found to not only serve as the chloroform adsorption sites,but also a molecular glue that prevents crack formation in the colloidal *** sensitivity of HMSS@CDs-PCs sensor is 0.79 nm ppm^(-1)and an impressively low limit of detection is 3.22 ppm,which are the best reported values in fast-response chloroform vapor sensor without multi-signal *** positive response time is 7.5 s and the negative response time 9 ***,relatively stable sensing can be maintained within a relative humidity of 20%-85%RH and temperature of 25-55℃.This study demonstrates that HMSS@CDs-PCs sensors have practical application potential in indoor and outdoor chloroform vapor detection.

关键词： Carbon dots Photonic crystal sensors Sensitivity-enhanced sensing Selectivity-enhanced sensing Chloroform vapor sensing

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结合学术网络与内容信息的文献语义表示方法研究

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情报学报 2025年第2期44卷 220-233页

作者：石斌王昊李晓敏周抒南京大学信息管理学院南京210023 江苏省数据工程与知识服务重点实验室南京210023

随着科研工作者人数的不断增加,科技论文的发表数量呈现快速增长的趋势。面对海量的科技论文,文献的归档、录入和分析工作变得越发繁重。当前,针对文献的分类模型主要关注论文的内容信息,而忽略了论文相关的关联信息。为此,本文提出一... 详细信息

随着科研工作者人数的不断增加,科技论文的发表数量呈现快速增长的趋势。面对海量的科技论文,文献的归档、录入和分析工作变得越发繁重。当前,针对文献的分类模型主要关注论文的内容信息,而忽略了论文相关的关联信息。为此,本文提出一种融合内容信息与学术网络的论文表征模型PAITKG (paper analysis by incorporating text and knowledge graph),引入知识图谱嵌入技术对文献的多重关联信息进行表征,采用Adapter微调的SciBERT提取内容特征,并将二者融合。在训练过程中,本文改进了动态对抗损失函数来引导模型更好地关注错误结果,并将该方法在数字人文和多模态学习两个领域的文献数据集上进行实验。在科技文献的学科多标签分类任务上,PAITKG比Baselines有显著改善,很好地提高了分类精度。除此以外,通过上游任务的学习,PAITKG的表征获得了更广泛的应用,在没有任何额外训练的情况下,本文模型提取的特征向量能够较好地应用于主题聚类、学者推荐等分析任务。研究结果表明,PAITKG通过构建并表征论文的学术网络,有效融合了文献的关联信息,提高了对文献数据的理解能力,而且其学习到的表征具有优秀的泛化潜力,能够应用于各种文献分析工作。

关键词：文献表征语义表示关联特征知识图谱嵌入 RelaGraph

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基于循证医学模式的预见性护理在腹腔镜卵巢囊肿剥除术患者中的应用效果

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中国民康医学 2025年第2期37卷 186-189页

作者：李晓敏信阳职业技术学院附属医院手术室河南信阳464000

目的:观察基于循证医学模式的预见性护理在腹腔镜下卵巢囊肿剥除术患者中的应用效果。方法:回顾性分析2022年1月至2023年8月该院收治的106例行腹腔镜下卵巢囊肿剥除术患者的临床资料,按照护理方法的不同将其分为对照组与观察组各53例。... 详细信息

目的:观察基于循证医学模式的预见性护理在腹腔镜下卵巢囊肿剥除术患者中的应用效果。方法:回顾性分析2022年1月至2023年8月该院收治的106例行腹腔镜下卵巢囊肿剥除术患者的临床资料,按照护理方法的不同将其分为对照组与观察组各53例。对照组给予常规护理,观察组在对照组基础上给予基于循证医学模式的预见性护理,比较两组围术期指标(胃肠功能恢复、首次下床活动时间、住院时间)水平、并发症发生率,护理前后负性情绪[汉密尔顿抑郁量表(HAMD)、汉密尔顿焦虑量表(HAMA)]、自我管理能力[成年人健康自我管理能力测评量表(AHSMSRS)]、生命质量[世界卫生组织生存质量测定量表简表(WHOQOL-BREF)]评分。结果:观察组胃肠功能恢复时间、首次下床活动时间、住院时间均短于对照组,差异有统计学意义(P<0.05);观察组并发症发生率为1.89%(1/53),低于对照组的15.09%(8/53),差异有统计学意义(P<0.05);护理后,两组HAMD、HAMA评分均低于护理前,且观察组低于对照组,差异有统计学意义(P<0.05);护理后,两组AHSMSRS、WHOQOL-BREF评分均高于护理前,且观察组高于对照组,差异有统计学意义(P<0.05)。结论:在常规护理基础上采用基于循证医学模式的预见性护理可提高腹腔镜卵巢囊肿剥除术患者自我管理能力和生命质量评分,改善围术期指标水平,降低并发症发生率和负性情绪评分,效果优于单纯常规护理效果。

关键词：预见性护理腹腔镜下卵巢囊肿剥除术自我管理能力负性情绪生命质量

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基于云平台的智能家庭控制系统设计

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现代电子技术 2025年第3期48卷 161-166页

作者：李小敏杨延宁赵艳丽宁夏理工学院电气信息工程学院宁夏石嘴山753000 延安大学物理与电子信息学院陕西延安716000

为了实现家居生活的舒适与安全,设计了一种基于云平台的智能家庭控制系统。建立了RFID智能门禁、室内气体监测与处理,室内土壤监测与自动浇花、系统室内光照监测与自动窗帘、手势识别与自动照明、Web界面显示数据、无线WiFi数据传输等... 详细信息

为了实现家居生活的舒适与安全,设计了一种基于云平台的智能家庭控制系统。建立了RFID智能门禁、室内气体监测与处理,室内土壤监测与自动浇花、系统室内光照监测与自动窗帘、手势识别与自动照明、Web界面显示数据、无线WiFi数据传输等功能于一体的智能家庭控制系统。以MEGA2560为微控制器,将空气质量传感器、光照传感器、土壤湿度传感器、手势识别传感器、环境传感器、射频识别等采集的各项指标数据传输至MCU,并利用编译好的程序进行相应的处理,用于完成由窗帘电机、换气风扇、水泵、电子锁、LED等模块的控制,通过MQTT协议与阿里云平台进行通信,实现Web端数据显示和钉钉机器人的预警。最后通过硬软件的联合调试,结果表明,该系统能够实现多传感器采集、智能控制、云平台监控等功能,具有实用性强、响应快、应用前景较好的特点。

关键词：智能家居阿里云 RFID 多传感器自动控制钉钉机器人预警

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CoFe_2O_4-Graphene Nanocomposites Synthesized through An Ultrasonic Method with Enhanced Performances as Anode Materials for li-ion Batteries

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Nano-Micro Letters 2014年第4期6卷 307-315页

作者： Yinglin Xiao xiaomin li Jiantao Zai Kaixue Wang Yong Gong Bo li Qianyan Han Xuefeng Qian School of Chemistry and Chemical Engineering and State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong University

Co Fe2O4-graphene nanosheets(Co Fe2O4-GNSs) were synthesized through an ultrasonic method, and their electrochemical performances as li-ion battery electrode were improved by annealing processes. The nanocomposites obtained at 350 °C maintained a high specific capacity of 1,257 m Ah g-1even after 200 cycles at 0.1 A g-1. Furthermore,the obtained materials also have better rate capability, and it can be maintained to 696, 495, 308, and 254 m Ah g-1at 1, 2,5, and 10 A g-1, respectively. The enhancements realized in the reversible capacity and cyclic stability can be attributed to the good improvement in the electrical conductivity achieved by annealing at appropriate temperature, and the electrochemical nature of Co Fe2O4 and GNSs during discharge–charge processes.

关键词： Cobalt ferrite Graphene Anode materials lithium ion battery

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挡墙渗漏对富水砂层基坑变形性状的影响

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水文地质工程地质 2025年第1期52卷 85-96页

作者：邱明明李晓敏杨果林段君义延安大学建筑工程学院陕西延安716000 中南大学土木工程学院湖南长沙410075 南昌大学工程建设学院江西南昌330031

针对深基坑漏水漏砂引发的灾害问题,探究基坑渗漏灾害发展规律及其控制方法对地下工程施工安全具有重要意义。结合某富水砂层排桩深基坑渗漏灾害实例,阐释了基坑漏水漏砂灾害发展特征及诱发原因,并采用现场监测和数值模拟方法对局部渗... 详细信息

针对深基坑漏水漏砂引发的灾害问题,探究基坑渗漏灾害发展规律及其控制方法对地下工程施工安全具有重要意义。结合某富水砂层排桩深基坑渗漏灾害实例,阐释了基坑漏水漏砂灾害发展特征及诱发原因,并采用现场监测和数值模拟方法对局部渗漏水下基坑变形性状及其控制措施进行了研究。研究结果表明:(1)基坑渗漏灾害发展是一个复杂的多场耦合作用过程,具有一定的隐蔽性和突发性;(2)挡墙水平位移曲线分布发展过程为“斜线”形—“锅底”形—浅“倒V”形—深“倒V”形,渗漏后挡墙最大水平位移为渗漏前的1.29~1.44倍;(3)墙后地表沉降曲线分布发展过程为“平勺底”形—“浅勺底”形—“深勺底”形,沉降槽敏感区范围为1.00h_e~1.20h_e(h_e为开挖深度),局部渗漏引起地表沉降槽加深变宽,渗漏后最大地表沉降为渗漏前的1.16~1.65倍;(4)地下水位“跳跃式”波动变化特征可作为评判基坑渗漏灾害的前兆信号;(5)支撑轴力变化随基坑开挖与支护过程动态调整从而协调变形发展,在基坑发生渗漏过程中支撑轴力出现小幅波动。采取“注浆+高压旋喷桩”联合处治措施可有效应对富水砂层基坑渗漏灾害控制难题,研究成果可为基坑工程渗漏灾害理论研究与控制提供参考。

关键词：基坑工程富水砂层漏水漏砂变形性状现场实测控制措施

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Experimental study on size-dependency of effective permittivity of particle-gas mixture with agglomeration

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仪器仪表学报 2007年第11期28卷 1932-1936页

作者： li xiaomin Xu lijun li Songyun School of Scienee University of Greenwich at Medway Chatham Maritime Chatham Kent ME4 4TB UK School of Instrument Science and Opto-Electronie Engineering Beihang University Beijing 100083 China

The effective medium approximation (EMA) theory is the basis of a capacitance sensor used for concen-tration measurementof a particulate solid flow, its measurementresultis independenton particle size. In existence ofparticle agglomeration or aggradation, however, it is found that the effective permittivity of a gas/solid mixture is de-pendent on particle size. In this paper, a parallel plate, differential capacitance sensor is utilized to investigate theinfluence of particle size on the effective permittivity of the mixture in such a case. Static experiments using threematerials including glass, limestone and quartz particles were carried out in an off-line manner. The volume fractionof particles being tested ranged from20×10-6to 600×10-6, while the particle size was between 3 and 100μ*** results showthat the effective permittivity of a particle-gas mixture with particle agglomeration is largerthan that predicted by EMA and the smaller the particle size, the larger the effective permittivity. The experimentprocess and analysis results are discussed in detail in the paper.

关键词：介质近似值介电常数混合物

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Behavior of NiCrAlY coating on the TC6 titanium alloy

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Journal of University of Science and Technology Beijing 2008年第2期15卷 167-172页

作者： Changqing Xia xiaomin Peng Jia li School of Materials Science and Engineering Central South University Changsha 410083 China

A NiCrAlY coating was deposited on the TC6 titanium substrate by arc ion plating （ALP）. The structure and morphologies of the NiCrAlY coating were characterized by X-ray diffraction （XRD） and scanning electron microscopy （SEM）, and the influence of vacuum heat treatment on the element diffusion behavior was studied. The results showed that the y＇-Ni3Al phase was precipitated on the NiCrAlY coating after heat treatment. The Ni3（AI,Ti）, TiNi, and Ti2Ni intermetallic layers appeared at the interface from the outside to the inside at 700℃, and the thickness of the intermetallic layers increased with the increase in temperature. At 700℃ Ti and Ni were the major diffusion elements, and the diffusion of Cr was observed when the heat treatment temperature increased up to 870℃. The violent inward diffusion of Ni at 950℃ resulted in the degradation of the NiCrAlY coating.

关键词： NiCrAlY coating TC6 titanium alloy vacuum heat treatment microstructure interdiffusion

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Transcriptomics and physiological analyses reveal that sulfur alleviates mercury toxicity in rice(Oryza sativa L.)

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Journal of Environmental Sciences 2024年第1期135卷 10-25页

作者： Yingmei Huang Jicai Yi xiaomin li Fangbai li National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China Guangdong Key Laboratory of Integrated Agro-Environmental Pollution Control and ManagementInstitute of Eco-Environmental and Soil SciencesGuangdong Academy of SciencesGuangzhou 510650China Guangzhou Institute of Geochemistry Chinese Academy of SciencesGuangzhou 510640China University of Chinese Academy of Sciences Beijing 100049China College of life Sciences South China Agricultural UniversityGuangzhou 510642China SCNU Environmental Research Institute Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety&MOE Key Laboratory of Theoretical Chemistry of EnvironmentSouth China Normal UniversityGuangzhou 510006China

Mercury(Hg)is one of the most dangerous contaminants and has sparked global concern since it poses a health risk to humans when consumed through ***(S)is a crucial component for plant growth,and S may reduce Hg accumulation in rice ***,the detailed effects of S and the mechanisms underlying S-mediated responses in Hg-stressed rice plants remain ***,to investigate the effects of S addition on rice growth,Hg accumulation,physiological indexes,and gene expression profiles,rice seedlings were hydroponically treated with Hg(20μmol/L Hg Cl_(2))and Hg plus elemental sulfur(100 mg/L).S application significantly reduced Hg accumulation in Hg-stressed rice roots and alleviated the inhibitory effects of Hg on rice growth.S addition significantly reduced Hg-induced reactive oxygen species generation,membrane lipid peroxidation levels,and activities of antioxidant enzymes while increasing glutathione content in *** analysis of roots identified 3,411,2,730,and 581 differentially expressed genes in the control(CK)***,CK ***+S,and Hg ***+S datasets,*** pathway of S-mediated biological metabolism fell into six groups:biosynthesis and metabolism,expression regulation,transport,stimulus response,oxidation reduction,and cell wall *** majority of biological process-related genes were upregulated under Hg stress compared with CK treatment,but downregulated in the Hg+S *** results provide transcriptomic and physiological evidence that S may be critical for plant Hg stress resistance and will help to develop strategies for reduction or phytoremediation of Hg contamination.

关键词： Sulfur Mercury Transcriptomics Detoxification

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Solid Electrolyte Interface in Zn-Based Battery Systems

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Nano-Micro Letters 2022年第12期14卷 286-309页

作者： Xinyu Wang xiaomin li Huiqing Fan Longtao Ma Frontiers Science Center for Flexible Electronics Institute of Flexible ElectronicsNorthwestern Polytechnical UniversityXi’an 710072People’s Republic of China State Key Laboratory of Solidification Processing School of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072People’s Republic of China

Due to its high theoretical capacity(820 mAh g^(−1)),low standard electrode potential(−0.76 V ***),excellent stability in aqueous solutions,low cost,environmental friendliness and intrinsically high safety,zinc(Zn)-based batteries have attracted much attention in developing new energy storage *** Zn battery system,the battery performance is significantly affected by the solid electrolyte interface(SEI),which is controlled by electrode and electrolyte,and attracts dendrite growth,electrochemical stability window range,metallic Zn anode corrosion and passivation,and electrolyte ***,the design of SEI is decisive for the overall performance of Zn battery *** paper summarizes the formation mechanism,the types and characteristics,and the characterization techniques associated with ***,we analyze the influence of SEI on battery performance,and put forward the design strategies of ***,the future research of SEI in Zn battery system is prospected to seize the nature of SEI,improve the battery performance and promote the large-scale application.

关键词： Solid electrolyte interface Zn-based battery Solvated structure Artificial SEI In situ SEI

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