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Chinese Journal of Chemistry 2021年第12期39卷 3322-3328页

作者： Zhaowei Ou Zihao Liang Xin Dong fanglin tan Li Gong Pei Zhao Honglei Wang Wei Liu Zhikun Zheng Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education School of Chemistryand State Key Laboratory of Optoelectronic Materials and TechnologiesSun Yat-Sen UniversityGuangzhouGuangdong 510275China Instrumental Analysis and Research Center Sun Yat-Sen UniversityGuangzhouGuangdong 510275China Key Laboratory of Low-Carbon Chemistry&Energy Conservation of Guangdong Province Key Laboratory for Polymeric Composite and Functional Materials of Ministry of EducationSchool of Materials Science and EngineeringSun Yat-Sen UniversityGuangzhouGuangdong 510275China

Imine-linked covalent organic frameworks(COFs)have attracted extensive attention due to designable structures,tunable properties,and excellent thermal and chemical *** were typically obtained as insoluble and unprocessable powders,which seriously limits their full *** has been made in the synthesis of thin films of imine-linked COFs by interfacial ***,the synthesis of highly crystalline,self-supporting thin films of COFs remains ***,we employed a surfactants-mediated method to synthesize such films at an air-water interface,showed the films could be transferred onto arbitrary substrates on demand,and demonstrated the generality of the methodology with two different *** found that the length of hydrophobic segments of surfactants played a key role in determination of the crystallinity and single crystalline domain size of the *** work provides a feasible strategy to generate highly crystalline thin films of COFs.

关键词： Covalent organic frameworks Two-dimensional polymers Thin films Surfactants Interfaces

Synthesis of Thin Film of a Three-Dimensional Covalent Organic Framework as Anti-counterfeiting Label

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Chinese Journal of Chemistry 2022年第10期40卷 1171-1176页

作者： Xin Dong Jing Yang Honglei Wang Pei Zhao fanglin tan Zhipeng Zhou Zhaowei Ou Li Gong Wei Liu Xudong Chen Zhikun Zheng Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education School of Chemistryand State Key Laboratory of Optoelectronic Materials and TechnologiesSun Yat-sen UniversityGuangzhouGuangdong 510275China Key Laboratory of Low-Carbon Chemistry&Energy Conservation of Guangdong Province Key Laboratory for Polymeric Composite and Functional Materials of Ministry of EducationState Key Laboratory of Optoelectronic Materials and TechnologiesSchool of Materials Science and EngineeringSun Yat-sen UniversityGuangzhouGuangdong 510275China Instrumental Analysis and Research Center Sun Yat-sen UniversityGuangzhouGuangdong 510275China

Film plays a key role in the sustainable development of our *** thin films of two-dimensional covalent organic frameworks(coFs)have been produced by interface,spin coating,microwave-assisted synthesis,and screen printing methods and are applied in nanofitration,molecular separation,photochemical sensing,anion transport,heat conduction,and proton *** the other hand,the synthesis of their three-dimensional(3D)analogues and subsequent integration in devices remains ***,self-supporting thin films of a three-dimensionai COF with tunable thickness was created by a stearic acid mediated synthesis methodology on water surface at room temperature in *** film could be transferred onto arbitrary substrate,and when supported on indium tin oxide glass,it exhibited irreversible *** optical feature made it act as a one-time anti-counterfeiting label in an electrochemical *** work will inspire the synthesis of thin films of 3D COFs as well as other 3D materials,and boost their property and application exploration.

关键词： Thin films Interfaces Electrochromism Anti-counterfeiting Covalent organic frameworks

Aqueous Synthesis of Covalent Organic Frameworks as Photocatalysts for Hydrogen Peroxide Production

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CCS Chemistry 2022年第12期4卷 3751-3761页

作者： fanglin tan Yuanyuan Zheng Zhipeng Zhou Honglei Wang Xin Dong Jing Yang Zhaowei Ou Haoyuan Qi Wei Liu Zhikun Zheng Xudong Chen Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education School of ChemistryState Key Laboratory of Optoelectronic Materials and TechnologiesSun Yat-sen UniversityGuangzhou 510275 Key Laboratory of Low-Carbon Chemistry&Energy Conservation of Guangdong Province Key Laboratory for Polymeric Composite and Functional Materials of Ministry of EducationSchool of Materials Science and EngineeringSun Yat-sen UniversityGuangzhou 510275 Center for Advancing Electronics Dresden(cfaed)and Faculty of Chemistry and Food Chemistry Technical University of DresdenDresden 01069 Central Facility of Electron Microscopy Electron Microscopy Group of Materials ScienceUniversität UlmUlm 89081 Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education School of ChemistrySun Yat-sen UniversityGuangzhou 510275

Covalent organic frameworks(COFs)are crystalline porous polymers with designable structures and *** crystallization typically relies on trialand-error experimentation involving harsh conditions,including organic solvents,presenting significant obstacles for rational design and large-scale ***,we present a liquid crystal-directed synthesis methodology and its implementation for up to gram-scale production of highly crystalline COFs in water and *** is compatible with monomers of different structures,shape,size,length of side chains,and electron-donating,electron-accepting,and heterocyclic substitutions near reactive *** types of donor-acceptor two-dimensional COFs including four types of new ones and a three-dimensional COF with a yield of up to 94%were demonstrated,showing great generality of the *** as-synthesized donor-acceptor COFs are organic semiconductors and contain macropores besides intrinsic mesopores which make them attractive *** production of H_(2)O_(2)under visible light in water was studied and the structure-property relationships were *** production rate reached 4347μmol h^(−1)gcat^(−1),which is about 467%better than that of the benchmark photocatalyst g-C_(3)N_(4).This study will inspire the mild synthesis and scale-up of a wide spectrum of COFs and organic semiconductors as efficient catalysts,promote their structure-property investigation,and boost their applications.

关键词： covalent organic frameworks liquid crystal photocatalysis hydrogen peroxide production porous polymer

几个绿化树种对大气中若干元素作用规律的研究

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福建林业科技 1998年第4期25卷 21-24页

作者：谭芳林福建省林业科学研究院

通过对油松、雪松、云杉、水杉、毛白杨等５个树种穿透降雨的研究得出：不同树种对大气中各元素的吸附聚集能力不同。根据综合评价，各树种对ＮＯ３－－Ｎ、ＮＨ４＋－Ｎ、ＰＯ４３－、Ｋ、Ｎａ、Ｃａ、Ｍｇ、Ｚｎ、Ｍｎ、Ｃｕ、Ｐｂ、... 详细信息

通过对油松、雪松、云杉、水杉、毛白杨等５个树种穿透降雨的研究得出：不同树种对大气中各元素的吸附聚集能力不同。根据综合评价，各树种对ＮＯ３－－Ｎ、ＮＨ４＋－Ｎ、ＰＯ４３－、Ｋ、Ｎａ、Ｃａ、Ｍｇ、Ｚｎ、Ｍｎ、Ｃｕ、Ｐｂ、Ｃｄ的综合吸附能力为：雪松＞云杉＞油松＞毛白杨＞水杉。

关键词：绿化树种大气降雨穿透降雨吸附作用

GFRF R-CNN:Object Detection Algorithm for Transmission Lines

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Computers, Materials & Continua 2025年第1期82卷 1439-1458页

作者： Xunguang Yan Wenrui Wang fanglin Lu Hongyong Fan Bo Wu Jianfeng Yu Shanghai Advanced Research Institute Chinese Academy of SciencesShanghai201210China University of Chinese Academy of Sciences Beijing100049China Jingwei Textile Machinery Co. Ltd.Beijing100176China

To maintain the reliability of power systems,routine inspections using drones equipped with advanced object detection algorithms are essential for preempting power-related *** increasing resolution of drone-captured images has posed a challenge for traditional target detection methods,especially in identifying small objects in high-resolution *** study presents an enhanced object detection algorithm based on the Faster Regionbased Convolutional Neural Network(Faster R-CNN)framework,specifically tailored for detecting small-scale electrical components like insulators,shock hammers,and screws in transmission *** algorithm features an improved backbone network for Faster R-CNN,which significantly boosts the feature extraction network’s ability to detect fine *** Region Proposal Network is optimized using a method of guided feature refinement(GFR),which achieves a balance between accuracy and *** incorporation of Generalized Intersection over Union(GIOU)and Region of Interest(ROI)Align further refines themodel’s *** results demonstrate a notable improvement in mean Average Precision,reaching 89.3%,an 11.1%increase compared to the standard Faster *** highlights the effectiveness of the proposed algorithm in identifying electrical components in high-resolution aerial images.

关键词： Faster R-CNN transmission line object detection GIOU GFR

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基于自动分类法的红树植物叶片信息测定

林业科学 2014年第5期50卷 34-40页

作者：乐通潮张会儒谭芳林中国林业科学研究院资源信息研究所北京100091 福建省林业科学研究院福州350012

利用GIS的空间分析功能和影像自动分类原理,在软件ArcGIS10中构建"叶片信息测定器",并利用此工具测定50个不同类型参照面的面积、周长、长度和宽度,来验证自动分类法的可行性和精度。结果表明:面积、周长、长度和宽度的相对误差小于1.3... 详细信息

利用GIS的空间分析功能和影像自动分类原理,在软件ArcGIS10中构建"叶片信息测定器",并利用此工具测定50个不同类型参照面的面积、周长、长度和宽度,来验证自动分类法的可行性和精度。结果表明:面积、周长、长度和宽度的相对误差小于1.3%。分别采用自动分类法、网格法和Photoshop法测定福建漳江口红树林国家级自然保护区的6种不同红树植物叶片(桐花树、白骨壤、老鼠簕、秋茄、黄槿和木榄叶片样本各150个,共900个样本)的面积、周长、叶长和叶宽等叶片信息。结果表明:木榄叶片最大,白骨壤叶片最小,桐花树和白骨壤的叶片大小较为均一,木榄和老鼠簕的叶形较为狭长,黄槿的叶形最接近圆形;自动分类法最为快速,平均测定每张叶片信息只需10 s,网格法最慢,每张叶片需要用时600 s,Photoshop法每片用时约20 s;自动分类法、网格法和Photoshop法的变异系数没有显著差异,3种方法所测结果的相关性极显著;与网格法和Photoshop法相比,自动分类法具有更快捷、高效、信息更丰富的特点。

关键词：叶片信息自动分类法模型构建器红树林

红树植物秋茄查尔酮合酶基因克隆及其在盐胁迫下的表达分析

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福建农林大学学报（自然科学版） 2017年第2期46卷 180-186页

作者：潘德灼林伟彬谭芳林陈伟福建农林大学生命科学学院福建福州350002 福建林业科学研究院福建福州350012 福建农林大学分子细胞与系统生物学中心福建福州350002

以秋茄(Kandelia candel)叶片为试验材料,采用RT-PCR的方法获得秋茄查尔酮合酶(chalcone synthase,CHS)基因的cDNA序列,命名为KcCHS,GenBank登录号为KX673194.1.序列分析结果表明,KcCHS基因的cDNA序列长度为1170bp,编码389个氨基酸,属于CHS超家族.序列比对结果显示,秋茄与其他物种的CHS基因核苷酸序列具有较高的相似性,平均达到80%以上.系统进化分析显示,KcCHS基因与余甘子CHS基因亲缘关系最近.实时荧光定量PCR分析表明,秋茄叶片KcCHS基因的转录水平随着NaCl浓度的升高而上升.此外,随着NaCl浓度的升高,黄酮类化合物的含量显著增加,羟自由基清除率也明显提高.

关键词：秋茄查尔酮合酶基因克隆盐胁迫

基于多时相无人机影像的高郁闭度森林采伐生物量估算

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农业机械学报 2023年第6期54卷 168-177页

作者：周小成王佩谭芳林陈崇成黄洪宇林宇福州大学空间数据挖掘与信息共享教育部重点实验室福州350108 福建省林业科学研究院福州350012 福建省闽侯白沙国有林场福州350102

为准确估算森林采伐生物量实现森林碳汇的精准计量,针对采用单一时相可见光无人机影像估算高郁闭度森林采伐生物量较困难的问题,基于伐区采伐前后多时相可见光无人机影像,研究森林采伐生物量高精度的估算方法。以福建省闽侯白沙国有林... 详细信息

为准确估算森林采伐生物量实现森林碳汇的精准计量,针对采用单一时相可见光无人机影像估算高郁闭度森林采伐生物量较困难的问题,基于伐区采伐前后多时相可见光无人机影像,研究森林采伐生物量高精度的估算方法。以福建省闽侯白沙国有林场一个针叶林采伐小班为试验区,采集分辨率优于10 cm的采伐前后多时相可见光无人机影像,采用动态窗口局部最大值法得到高精度的采伐株数与单木树高信息,再基于采伐后无人机影像,运用YOLO v5方法检测并提取伐桩直径信息,根据胸径-伐桩直径模型来估算采伐木胸径信息,再利用树高和胸径二元生物量公式估算采伐生物量,以实测数据进行验证。根据动态窗口局部最大值法获取株数与平均树高精度分别为96.35%、99.01%,运用YOLO v5方法对伐桩目标检测的总体精度为77.05%,根据伐桩直径估算的平均胸径精度为90.14%,最后得到森林采伐生物量精度为83.08%,结果表明这一新方法具备较大的应用潜力。采用采伐前后多时相无人机可见光遥感,可实现森林采伐生物量的有效估算,有助于降低人工调查成本,为政府及有关部门进行碳汇精准计量提供有效的技术支持。

关键词：森林采伐生物量多时相无人机影像可见光遥感

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基于生境质量构建森林生物多样性保育价值模型

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北京林业大学学报 2020年第1期42卷 1-9页

作者：洪宇刘金福涂伟豪林志玮谭芳林福建农林大学计算机与信息学院福建福州350002 福建省高校生态与资源统计重点实验室福建农林大学海峡自然保护区研究中心福建福州350002 福建农林大学林学院福建农林大学林学博士后流动站福建福州350002 福建省林业科学研究院福建福州350002

【目的】传统的森林生物多样性保育价值缺乏统一的评估标准,不便于结果比较。目前,物种保育价值模型主要通过林分丰富度核算森林当前保育价值,但未考虑土地利用类型对树种生长的潜在影响,不能体现森林的长期保育价值。近年来,逐步完善... 详细信息

【目的】传统的森林生物多样性保育价值缺乏统一的评估标准,不便于结果比较。目前,物种保育价值模型主要通过林分丰富度核算森林当前保育价值,但未考虑土地利用类型对树种生长的潜在影响,不能体现森林的长期保育价值。近年来,逐步完善的生物多样性价值评价新理论中,尚未出现适用于森林生物多样性保育价值评估的方法。【方法】通过分析福建土地利用情况计算生境质量并划分等级,首次提出生境质量调整系数。利用生境质量和森林分布之间的地理对应关系,构建出基于生境质量的森林生物多样性保育价值模型(HQ-BPV模型),由此将土地利用的影响融入福建省森林生物多样性保育价值评估中。【结果】(1)福建省生境质量分布整体呈现内北高南低、内陆高沿海低和自然保护区高非自然保护区低的态势。(2)福建主要植被类型的平均生境质量按大小排序为针阔混交林>竹林>阔叶混交林>阔叶林>灌丛>针叶林>经济林。(3)调整后栎类和栲类的物种单位面积保育价值最高,为3.58万元/hm^2,调整后各优势树种(组)的物种保育总值中阔叶混交林价值最高,为658.42亿元,构建模型核算的福建省森林生物多样性保育价值为2056.39亿元。【结论】基于能够量化土地利用影响的生境质量指数,构建出HQ-BPV模型用于评价福建省森林生物多样性保育价值,为森林生物多样性的保育价值核算提供新思路,有利于森林资源监测和结构优化。

关键词：森林生物多样性保育价值评估生境质量

海岸带风口沙地木麻黄无性系造林与根系生长特性

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林业科学 2005年第1期41卷 85-90页

作者：张水松谭芳林林武星陈胜李永林福建省林业科学研究院福州350012 东山县赤山林场东山364300

从 2 0 0 0年 5月起在福建省东山县赤山林场临海风口干旱沙地进行 3年试验研究 ,从 7个参试无性系中选择惠 1#、粤 70 1#、东 980 1#等 3个造林保存率达 6 1 9%～ 6 9 5 %的无性系 ,在此类特殊困难立地防护林植物材料选择方面取得突破... 详细信息

从 2 0 0 0年 5月起在福建省东山县赤山林场临海风口干旱沙地进行 3年试验研究 ,从 7个参试无性系中选择惠 1#、粤 70 1#、东 980 1#等 3个造林保存率达 6 1 9%～ 6 9 5 %的无性系 ,在此类特殊困难立地防护林植物材料选择方面取得突破。通过对风口沙地前沿高地和后沿低洼地 2种微地形条件木麻黄无性系造林效果的比较分析 ,后者造林保存率提高约 5 % ,且林木生长较快。 2种微地形条件林木根系生长状况 ,风口前沿高地林木根系分布深、数量多、结构密集、吸收根系网络发达 ,有助于逃避大气干旱和土壤干旱。并揭示根系分布深度、数量、密集程度、网络结构与土壤含水率大体呈负相关的趋势。研究揭示 ,风口干旱沙地造林成活的机制 ,是由于林木形成发达、庞大的根系网络的生理和形态特性 ,以适应干旱生境和保证造林成活。不同造林方式的试验结果表明 ,丛状、团状等植生组造林方式可提高保存率约 10 % ,在生产实践上有推广应用价值。

关键词：无性系根系生长沙地木麻黄林木根系分布造林保存率发达高地前沿