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Particuology 2024年第1期84卷 126-135页

作者： Yanyan Huang Huimin Zhong Cong Jiang jiahui yang Jingwen Zhang Fei Zhao Chaoqun Liu College of Light Industry and Food Engineering Nanjing Forestry UniversityNanjing210037China College of Pharmacy Institutes of Environment and MedicineHenan UniversityKaifeng475004China

With natural polyphenol compound tannic acid(TA)as the ingredient,copper tannate(CuTA)nanolayer material was formed by self-assembly under the conditions of heating and copper *** ion and tannic acid could coordinate to form Cu-O-C structure which was similar to the Fe-N-C structure of natural heme *** addition,the obtained CuTA nanomaterial possessed excellent peroxidase-like catalytic activity and *** on this excellent enzymatic activity,CuTA nanomaterials could be used for colorimetric detection of hydrogen peroxide with a smartphone and decomposition of organic *** on the structural characteristics and catalytic activity,the copper tannate nanozymes could also serve as potential antibacterial reagents to effectively inhibit the growth of gram-negative and positive bacteria in a low hydrogen peroxide *** work may promote the exploration of novel peroxidase mimetics and broaden the applications of nanozymes.

关键词： Nanozyme Colorimetric detection Smartphone Antibacteria

Using MsfNet to Predict the ISUP Grade of Renal Clear Cell Carcinoma in Digital Pathology Images

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Computers, Materials & Continua 2024年第1期78卷 393-410页

作者： Kun yang Shilong Chang Yucheng Wang Minghui Wang jiahui yang Shuang Liu Kun Liu Linyan Xue College of Quality and Technical Supervision Hebei UniversityBaoding071002China National and Local Joint Engineering Research Center of Metrology Instrument and System Hebei UniversityBaoding071002China Hebei Technology Innovation Center for Lightweight of New Energy Vehicle Power System Hebei UniversityBaoding071002China

Clear cell renal cell carcinoma(ccRCC)represents the most frequent form of renal cell carcinoma(RCC),and accurate International Society of Urological Pathology(ISUP)grading is crucial for prognosis and treatment *** study presents a new deep network called Multi-scale Fusion Network(MsfNet),which aims to enhance the automatic ISUP grade of ccRCC with digital histopathology pathology *** MsfNet overcomes the limitations of traditional ResNet50 by multi-scale information fusion and dynamic allocation of channel *** model was trained and tested using 90 Hematoxylin and Eosin(H&E)stained whole slide images(WSIs),which were all cropped into 320×320-pixel patches at 40×*** achieved a micro-averaged area under the curve(AUC)of 0.9807,a macro-averaged AUC of 0.9778 on the test *** Gradient-weighted Class Activation Mapping(Grad-CAM)visually demonstrated MsfNet’s ability to distinguish and highlight abnormal areas more effectively than *** t-Distributed Stochastic Neighbor Embedding(t-SNE)plot indicates our model can efficiently extract critical features from images,reducing the impact of noise and redundant *** results suggest that MsfNet offers an accurate ISUP grade of ccRCC in digital images,emphasizing the potential of AI-assisted histopathological systems in clinical practice.

关键词： Renal cell carcinoma computer-aided diagnosis pathology image deep learning machine learning

Role of binders in reactive composites: A case study with spherical B/Pb 3 O 4 particles

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PARTICUOLOGY 2024年第10期93卷 170-179页

作者： Wang, Fan Du, Shanghao yang, jiahui Xue, Zhihua Li, Jiafei An, Chongwei Wang, Jingyu Wu, Bidong North Univ China Sch Environm & Safety Engn Taiyuan 030051 Peoples R China

The strategic selection of appropriate preparation methods and binder strategies is crucial for enhancing the particle and combustion performance of pyrotechnic delay compositions (PDCs). This study, utilizing droplet microfluidics technology (DMT) and micron-scale raw materials, prepared spherical B/Pb 3 O 4 composite particles with varying concentrations of fluorine rubber (F 2604 ). The morphology, specific surface area, bulk density, flowability, friction sensitivity, thermal decomposition, and combustion performance of these microspheres were characterized. The results indicate that as the binder content increases, the particle size of the microspheres first decreases and then increases, the specific surface area decreases, and the bulk density increases, correlating with tighter binding of the reactant powders by the binder. Furthermore, tighter powder-to-powder binding results in a progressive decrease in the thermal decomposition peak temperature of the samples (from 404.2 degrees C to 346.4 degrees C). Additionally, increased binder content reduces the friction sensitivity and combustion rate of the samples, which is attributed to the energy absorption properties of the binder. Compared to the control group, the microsphere samples exhibit significantly enhanced bulk density, flowability, friction safety, and combustion delay precision, potentially improving the reliability of PDCs in ignition sequences. (c) 2024 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V. All rights are reserved, including those for text and data mining, AI training, and similar technologies.

关键词： Pyrotechnic delay composition Droplet microfluidic technology Particle Binder Combustion performance BURNING RATE DELAY

Ribosome-inspired electrocatalysts inducing preferential nucleation and growth of three-dimensional lithium sulfide for high-performance lithium-sulfur batteries

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Journal of Energy Chemistry 2024年第7期94卷 517-526页

作者： Zhen Wu Wenfeng He jiahui yang Yunuo Gu Ruiqi yang Yiran Sun Jiajia Yuan Xin Wang Junwu Zhu Yongsheng Fu Key Laboratory for Soft Chemistry and Functional Materials of Ministry of Education Nanjing University of Science and TechnologyNanjing 210094JiangsuChina School of Energy and Power Engineering Jiangsu UniversityZhenjiang 212013JiangsuChina FEB Res Inst Far East BatteryWuxi 214200JiangsuChina

Nucleation of lithium sulfide(Li_(2)S)induced by electrocatalysts plays a crucial role in mitigating the shut-tle ***,short-chain polysulfides on electrocatalysts surfaces tend to re-dissolve into elec-trolytes,delaying Li_(2)S supersaturation and its *** this study,we draw inspiration from the ribosome-driven protein synthesis process in cells to prepare ultrasmall nitrogen-doped MoS_(2) nanocrys-tals anchored on porous nitrogen-doped carbon networks(N-MoS_(2)-NC)***,the ex-situ SEM demonstrates that ribosome-inspired N-MoS_(2)-NC electrocatalysts induce early nucleation and rapid growth of three-dimensional Li_(2)s during *** calculations reveal that the Li-s bond length in N-MoS_(2)-Li_(2)S(100)is shorter,and the corresponding interfacial formation energy is lower than in MoS_(2)-Li_(2)S(100).This accelerated conversion of lithium polysulfides to Li_(2)S can enhance the utilization of active substances and inhibit the shuttle *** study highlights the potential of ribosome-inspired N-MoS_(2)-NC in improving the electrochemical stability of Li-S batteries,providing valuable insights for future electrocatalyst design.

关键词： Lithium-sulfur batteries Electrocatalysts Nanocrystals Ribosome-inspired Nucleation and growth

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基于无人机机载AI模块的电力巡检技术

沈阳工业大学学报 2024年第1期46卷 49-53页

作者：王昊丁国斌杨家慧南方电网数字电网研究院有限公司广东广州510700 广州致讯信息科技有限责任公司研发部广东广州510700

针对输电线路无人机巡检实时性和准确性的要求,深入研究了YOLOv3目标检测算法在无人机巡检机载AI模块中的应用。利用将目标检测候选区选取和对象识别合二为一的YOLOv3算法,结合多尺度特征融合方式实现了目标检测的高准确性和实时优化,... 详细信息

针对输电线路无人机巡检实时性和准确性的要求,深入研究了YOLOv3目标检测算法在无人机巡检机载AI模块中的应用。利用将目标检测候选区选取和对象识别合二为一的YOLOv3算法,结合多尺度特征融合方式实现了目标检测的高准确性和实时优化,并采用残差块解决了模型退化问题。输电线路绝缘子检测结果表明:YOLOv3算法平均精度可达90%,相同条件下YOLOv3算法平均处理速度约为Faster RCNN算法的3.2倍,约为SSD算法的1.6倍。

关键词：无人机巡检目标检测图像识别多尺度特征融合残差块输电线路实时性

宽负荷下切圆燃煤锅炉H_(2)S分布特性的数值模拟

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煤炭学报 2024年第6期49卷 2887-2895页

作者：邓磊袁茂博杨家辉韩磊姜家豪车得福西安交通大学动力工程多相流国家重点实验室陕西西安710049

锅炉采用空气分级燃烧降低NO_(x)排放的同时也提高了主燃区H_(2)S体积分数。炉墙壁面过高的H_(2)S体积分数是加剧水冷壁高温腐蚀的重要因素。为保障新能源并网发电,大型燃煤机组灵活调峰的需求增加,不同负荷下的水冷壁近壁面H_(2)S分布... 详细信息

锅炉采用空气分级燃烧降低NO_(x)排放的同时也提高了主燃区H_(2)S体积分数。炉墙壁面过高的H_(2)S体积分数是加剧水冷壁高温腐蚀的重要因素。为保障新能源并网发电,大型燃煤机组灵活调峰的需求增加,不同负荷下的水冷壁近壁面H_(2)S分布特性值得关注。通过正交试验分析了切圆燃煤锅炉运行参数对水冷壁近壁面H_(2)S体积分数分布的影响。选取一台超临界600 MW切圆燃煤锅炉建立数值模型,设计L_(16)(4^(5))正交工况,覆盖100%BMCR、75%THA,50%THA以及35%BMCR四种负荷。建立了自定义SO_(x)生成模型以确定燃料硫的析出和转化路径,模型包含多表面反应子模型以描述焦炭与O_(2)/CO_(2)/H_(2)O等3种气体的异相反应,并确定焦炭气化反应消耗量占总消耗量的比例,进而对炉膛H_(2)S空间分布进行了模拟计算。研究表明,近壁面高体积分数H_(2)S区域主要位于投运燃烧器层中最下层燃烧器以下以及最上层燃烧器以上至SOFA层之间,烟气切圆沿炉膛高度增加逐渐增大是造成后一区域H_(2)S体积分数较高的重要原因。35%BMCR负荷下水冷壁重点区域的H_(2)S平均体积分数为364μL/L,明显低于其他负荷。锅炉运行参数对重点区域H_(2)S体积分数影响程度的排序为:锅炉负荷>一次风率>主燃区空气过量系数>假想切圆直径>燃烧器竖直摆角。

关键词：切圆燃煤锅炉宽负荷 H2S分布正交分析数值模拟

扶贫改革试验区对地方基本公共服务供给水平的影响研究——来自浙江省丽水市的经验证据

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经济学报 2024年第3期11卷 326-362页

作者：徐雷杨家辉李军艳湖南工商大学经贸学院首都经济贸易大学统计学院上海财经大学公共经济与管理学院

本文利用2013年浙江省丽水市实施的扶贫改革试验区这一外生冲击构造准自然实验,借助浙江省2007—2020年58个县域的面板数据,主要采用双重差分固定效应识别方法,评估、阐释试验区对地方基本公共服务供给水平的影响效果以及作用渠道。结... 详细信息

本文利用2013年浙江省丽水市实施的扶贫改革试验区这一外生冲击构造准自然实验,借助浙江省2007—2020年58个县域的面板数据,主要采用双重差分固定效应识别方法,评估、阐释试验区对地方基本公共服务供给水平的影响效果以及作用渠道。结果表明,试验区促使地方人均基本公共服务支出提升750元左右,所得结论在经过一系列不同形式的稳健性检验之后仍然成立。从动态效应来看,试验区对提升地方基本公共服务供给水平具有长时段的显著影响。作用渠道分析显示,试验区的设立促使地方政府承担较大的财政收支压力,并借助税收努力,同时通过财政预算结构调整,能够达到提高基本公共服务供给水平的目的。此外,试验区内部地区间具有的差异性特征对不同类别的基本公共服务供给也表现出一定的异质性影响。丽水市作为扶贫改革试验区的一个缩影,本文的研究有助于给政策制定者提供一个反馈的视角,同时也有助于为我国探寻构建适度普惠型社会福利的新路径提供经验借鉴。

关键词：扶贫改革试验区基本公共服务丽水市双重差分法

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热喷涂工装设计及其实践应用

现代制造技术与装备 2024年第6期60卷 143-145页

作者：杨佳晖上海贺东电子材料有限公司上海201505

热喷涂工艺在现代工业中占据重要地位,是表面处理三大核心工艺之一,而工装设计则是该工艺的关键环节之一。系统阐述热喷涂工装设计的核心原理、影响因素、实施方法、改进优化,并结合具体实际案例详细剖析其在实际生产过程中的应用,旨在... 详细信息

热喷涂工艺在现代工业中占据重要地位,是表面处理三大核心工艺之一,而工装设计则是该工艺的关键环节之一。系统阐述热喷涂工装设计的核心原理、影响因素、实施方法、改进优化,并结合具体实际案例详细剖析其在实际生产过程中的应用,旨在提升热喷涂工艺的生产效率、涂层质量及过程安全性,期望为热喷涂工装设计的优化与创新提供理论支持和实践指导,进而为行业发展注入新活力。

关键词：热喷涂工装设计:涂层质量设计优化

商贸物流类企业开展供应链金融业务的必要性研究

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全国流通经济 2024年第12期 32-35页

作者：杨佳慧新疆商贸物流(集团)有限公司新疆乌鲁木齐830000

本文旨在研究商贸物流类企业开展供应链金融业务的必要性。通过对供应链金融业务的概念和特点进行阐述,分析了商贸物流类企业开展供应链金融业务的意义和作用,探讨了该业务对集团、供应链企业和金融机构的价值。同时,论文还分析了商贸... 详细信息

本文旨在研究商贸物流类企业开展供应链金融业务的必要性。通过对供应链金融业务的概念和特点进行阐述,分析了商贸物流类企业开展供应链金融业务的意义和作用,探讨了该业务对集团、供应链企业和金融机构的价值。同时,论文还分析了商贸物流类企业开展供应链金融业务可能面临的风险和挑战,并提出了相应的应对策略。通过本文的研究,为商贸物流类企业开展供应链金融业务提供了理论依据和实践参考。

关键词：商贸物流类企业供应链金融必要性风险与挑战

乡村振兴背景下农产品品牌建设路径分析——以潍县萝卜为例

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农产品质量与安全 2024年第2期 101-105页

作者：杨佳慧河海大学公共管理学院南京211100

农产品品牌建设对促进区域农业转型和实现农业现代化具有重要意义。本文以山东省知名农产品潍县萝卜为例,通过调查和分析发现其存在品牌建设主体缺失,品牌意识薄弱;品牌知名度低,推广途径单一;缺乏精深加工,品牌优势不明显等问题。基于... 详细信息

农产品品牌建设对促进区域农业转型和实现农业现代化具有重要意义。本文以山东省知名农产品潍县萝卜为例,通过调查和分析发现其存在品牌建设主体缺失,品牌意识薄弱;品牌知名度低,推广途径单一;缺乏精深加工,品牌优势不明显等问题。基于此,本文提出增强品牌意识,发展品牌经济;加强技术支持,重视人才引进;挖掘品牌内涵,创新品牌营销;优化产业加工链,增强品牌竞争力等路径,以推动潍县萝卜的品牌建设。

关键词：潍县萝卜品牌建设乡村振兴路径分析