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A review on adhesion behavior of chip seal pavement and aggregate

Journal of Traffic and Transportation Engineering(English Edition) 2024年第3期11卷 441-466页

作者： yuming zhou Zhuyi Peng Jinyu Wang Jianguo Wei Hao Liu Di Wang Jinming Li Key Laboratory of Road Structure and Material of Ministry of Transport(Changsha) Changsha University of Science and TechnologyChangsha 410114China School of Traffic and Transportation Engineering Changsha University of Science and TechnologyChangsha 410114China Wuhan Huike Testing Co. Ltd.Wuhan 430000China Department of Civil Engineering University of OttawaON KIN 6N5Canada CCCC Infrastructure Maintenance Group Co. Ltd.Beijing 100102China

Chip seal is widely used for preventive maintenance to mitigate pavement deterioration,but it is prone to aggregate loss during pavement *** further promote the development and application of chip seals in road engineering in China,the research progress of the adhesion behavior of aggregate and binder in chip seals was reviewed in this paper,focusing on the adhesion mechanism of emulsified asphalt and alkaline *** Influencing factors and evaluation methodology of chip seals'aggregate adhesion behavior were also *** results demonstrate that the adhesion process between emulsified asphalt and alkaline aggregate is divided into three processes including infiltration,demulsification,and cluster,which is more complicated when compared to hot *** designing a chip seal,not only the characteristics of single material should be paid attention to,but also the combination of binder and aggregate matters a *** form good adhesion between aggregate and asphalt binder,various influencing factors such as material selection,design method,and construction technical index should be considered comprehensively in the whole design,construction,and operation *** methods for evaluating adhesion behavior are summarized,including macroscopic adhesion performance tests,image analysis technology,and model *** is not objective to evaluate the aggregate adhesion behavior of chip seal only by a single evaluation method.A comprehensive evaluation based on the micro-macro multi-scale method should be considered in the future.

关键词： Chip seal Adhesion behavior Asphalt binder Aggregate

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Review and prospect of floating car data research in transportation

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Journal of Traffic and Transportation Engineering(English Edition) 2024年

作者： Chi Zhang yuming zhou Min Zhang Bo Wang Yuhan Nie School of Highway， Chang'an University College of Transportation Engineering， Chang'an University

With the advancement of Intelligent Transportation Systems， floating car data， as a crucial source of transportation information， has garnered increasing attention for its applications and development directions within the context of massive traffic data. This study conducts an in-depth literature review analysis of floating car data in the transportation field based on the Web of Science (WOS) database from 2000 to 2023， employing bibliometric methods and knowledge graph technologies. The current research status was visually analyzed through the literature distribution by year， research regions and institutions， research hotspots， and literature clustering using the bibliometric tool CiteSpace. Three major research topics were identified based on the literature clustering analysis. A systematic review of key literature was conducted to address research challenges related to floating car sampling proportions and frequencies， and future research challenges and opportunities were proposed. The result shows an overall parabolic increase in publication volume， with research hotspots mainly focusing on mountainous cities， cluster analysis， machine learning， and deep learning. The three major research clusters include traffic flow state， traffic safety， and route planning. The optimal investment proportion for floating cars is determined to be 3-8%， and the sampling frequency significantly affects the accuracy of vehicle speed and heading angle information， while having a weaker impact on positional parameters. With the trend of large-scale Internet-connected vehicle deployment in the future， a massive amount of floating car data will be generated， prompting in-depth research on the fusion of heterogeneous data sources， including floating car data. Future research could focus on leveraging Transformer and Graph Neural Networks to explore spatiotemporal features of data， developing lightweight real-time floating car data processing algorithms， and constructing multimodal r

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Explore the lane change trajectory pattern driven by full-time domain trajectory data

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Journal of Traffic and Transportation Engineering(English Edition) 2024年

作者： Min Zhang Yuhan Nie Bo Wang Chi Zhang yuming zhou Yijing Zhao School of Transportation Engineering， Chang'an University Engineering Research Center of Highway Infrastructure Digitalization， Ministry of Education School of Highway Chang'an University School of Civil and Environmental Engineering， Nanyang Technological University

Due to the increasing density and complexity of the highway network， a deep understanding of the characteristics of lane changing (LC) behavior is crucial for road refinement design. The emergence of full time domain trajectory big data provides unprecedented opportunities for in-depth research on highway safety geometry design. This article proposes a method framework for extracting LC trajectory patterns to explore the combination trajectory patterns during the LC process. This article achieves subdivision in driving mode detection by using the Adaptive Pruned Exact Linear Time (APELT) algorithm to detect change points， taking into account the short sequence features of LC. In order to achieve the classification of segmented fragments， we report a clustering technique based on similarity matching (SM)， which can effectively avoid the problem of excessive distortion in similarity measurement. The results indicate that APELT technology has certain advantages in F1 score and accuracy of LC pattern recognition， which is more in line with reality. The kappa score based on similarity matching is greater than 0.8， indicating high accuracy of pattern recognition. This study provides a novel data mining method for a comprehensive understanding of lane changing behavior under full time domain big data， which will provide reference for road design in complex scenes.

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低压Si MOSFETs对SiC/Si级联器件短路特性的影响

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电子科技大学学报 2024年第2期53卷 174-179页

作者：周郁明楚金坤周伽慧安徽工业大学安徽省高校电力电子与运动控制重点实验室马鞍山243002

由低压硅金属-氧化物-半导体场效应晶体管(Silicon Metal-Oxide-Semiconductor Field-Effect Transistor, Si MOSFET)和碳化硅结型场效应晶体管(Silicon Carbon Junction Field-Effect Transistor, SiC JFET)构成的SiC/Si级联(Cascode)器件,兼具了低压Si MOSFET易于驱动、SiC JFET高耐压低损耗等优点。该文采用实验和数值模拟的方式研究了低压Si MOSFET对SiC/Si级联器件短路特性的影响,结果表明,在短路过程中SiC/Si级联器件中的SiC JFET最高温度比单独的SiC JFET短路时的最高温度低,SiC/Si级联器件的短路失效时间得到了延长,并且随着Si MOSFET额定电压的增加,SiC/Si级联器件短路失效延长的时间也在增加。

关键词：泄漏电流 SiC/Si级联器件 SiC JFET 短路失效

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Geometric regulation of collective cell tangential ordering migration

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Journal of Innovative Optical Health Sciences 2024年第2期17卷 94-103页

作者： Hao Dong yuming zhou Xuehe Ma Junfang Liu Fulin Xing Jianyu Yang Qiushuo Sun Qingsong Hu Fen Hu Leiting Pan Jingjun Xu The Key Laboratory of Weak-Light Nonlinear Photonics of Education Ministry School of Physics and TEDA Institute of Applied Physics Nankai University Tianjin 300071 P.R.China State Key Laboratory of Medicinal Chemical Biology Frontiers Science Center for Cell Responses College of Life Sciences Nankai University Tianjin 300071 P.R.China Shenzhen Research Institute of Nankai Uniwersity Shenzhen Guangdong 518083P.R.China Collaborative Innovation Center of Extreme Optics Shanxi University.Taiyuan Shanxi 030006P.R.China

Collective cell migration is a coordinated movement of multi-cell systems essential for various processes throughout *** collective motions often occur under spatial restrictions,hallmarked by the collective rotation of epithelial cells confined in circular ***,we aim to explore how geometric shapes of confinement regulate this collective cell *** develop quantitative methods for cell velocity orientation analysis,and find that boundary cells exhibit stronger tangential ordering migration than inner cells in circular ***,decreased tangential ordering movement capability of collective cells in triangular and square patterns are observed,due to the disturbance of cell motion at unsmooth corners of these *** the other hand,the collective cell rotation is slightly affected by a convex defect of the circular pattern,while almost hindered with a concave defect,also resulting from different smoothness features of their *** simulations employing cell Potts model well reproduce and extend experimental ***,our results highlight the importance of boundary smoothness in the regulation of collective cell tangential ordering migration.

关键词： Collective cell migration spatial restrictions tangential ordering geometric regula-tion cell Potts model

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传输技术在信息通信工程中的有效应用分析

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智能城市应用 2024年第7期7卷 44-46页

作者：周宇铭中邮通建设咨询有限公司江苏南京210000

传输技术在信息通信领域中起到越来越重要的作用,为建立可靠、高效的通信网络提供了技术支持。文章介绍了传输技术在现代网络中的应用,包括ASON传输系统、MSTP系统、WDM系统以及SDH系统等,具体分析了传输技术在信息通信工程中的各个方... 详细信息

传输技术在信息通信领域中起到越来越重要的作用,为建立可靠、高效的通信网络提供了技术支持。文章介绍了传输技术在现代网络中的应用,包括ASON传输系统、MSTP系统、WDM系统以及SDH系统等,具体分析了传输技术在信息通信工程中的各个方面的应用,如本地骨干线网、长途干线网、自动变换网光、一体机中的应用以及短途传输过程中的应用等,通过对这些应用场景的分析,可以更好地理解传输技术在信息通信工程中的作用和意义,为相关领域的技术人员提供借鉴。

关键词：传输技术信息通信工程应用分析

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槐米提取物/PBTCA复配物阻硫酸钙垢性能研究

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应用化工 2024年第9期53卷 2114-2117页

作者：南秋利张绮琳周钰明东南大学成贤学院化工与制药工程学院江苏南京210088 东南大学化学与化工学院江苏南京210088

采用静态阻垢法研究了槐米提取物和其与市售2-膦酸基丁烷-1,2,4-三羧酸(PBTCA)二元复配物对循环冷却水阻硫酸钙垢性能。结果表明,单一的槐米提取物阻硫酸钙垢效果随槐米提取物浓度的增加呈先增加后递减的趋势,最佳的浓度为21 mg/L,阻垢... 详细信息

采用静态阻垢法研究了槐米提取物和其与市售2-膦酸基丁烷-1,2,4-三羧酸(PBTCA)二元复配物对循环冷却水阻硫酸钙垢性能。结果表明,单一的槐米提取物阻硫酸钙垢效果随槐米提取物浓度的增加呈先增加后递减的趋势,最佳的浓度为21 mg/L,阻垢率可达20.45%;槐米提取物与PBTCA的二元复配物呈现较好的阻硫酸钙垢性能,在质量配比PBTCA∶槐米提取物=1∶2,投加量为21 mg/L,保温时间4 h, CaCl_(2)浓度5.55 mg/mL,保温温度70℃时,阻硫酸钙垢率达到93.75%,硫酸钙垢未见明显的规整结构而呈团块状;热重分析表明,槐米提取物在250℃时可发生分解,表现良好的热降解性能。

关键词：循环冷却水硫酸钙垢阻垢槐米提取物 PBTCA

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食品中营养成分的快速检测与分析方法研究

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食品安全导刊 2024年第9期 190-192页

作者：吴骅周宇明广东省轻工业技师学院广东广州510000

本文介绍了食品营养成分的定义、分类及其生理功能,指出食品加工生产过程中各因素对营养成分的影响,同时针对快速检测技术的原理,如光谱分析技术、电化学传感技术、生物传感器技术以及纳米技术等在食品营养成分检测中的应用进行了论述,... 详细信息

本文介绍了食品营养成分的定义、分类及其生理功能,指出食品加工生产过程中各因素对营养成分的影响,同时针对快速检测技术的原理,如光谱分析技术、电化学传感技术、生物传感器技术以及纳米技术等在食品营养成分检测中的应用进行了论述,并提出了一系列优化策略,如优化样品前处理技术、检测条件优化、数据处理与分析算法以及多成分同时检测技术等,以提高检测效率,提高检测结果的准确性和可靠性。通过本文的研究,希望能为食品营养成分的快速检测与分析提供有力支持,从而保障食品安全和促进食品工业发展。

关键词：食品营养成分快速检测光谱分析优化策略应用研究

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食品加工对食品营养与安全的影响

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食品安全导刊 2024年第10期 118-120页

作者：周宇明吴骅广东省轻工业技师学院广东广州510000

本文深入探讨了食品加工对食品营养与安全的影响,分析了食品加工过程中蛋白质、脂质、碳水化合物、维生素和矿物质等营养成分的变化机制,以及这些变化对人体健康的影响。同时介绍了高压处理、红外及微波技术、真空低温烹饪、生物保鲜技... 详细信息

本文深入探讨了食品加工对食品营养与安全的影响,分析了食品加工过程中蛋白质、脂质、碳水化合物、维生素和矿物质等营养成分的变化机制,以及这些变化对人体健康的影响。同时介绍了高压处理、红外及微波技术、真空低温烹饪、生物保鲜技术以及纳米技术在食品加工中的应用,评估了这些创新技术对食品营养与安全的影响,并提出食品加工过程中的风险控制措施,为确保食品加工的安全性和营养价值提供了有效策略。

关键词：食品加工营养成分食品安全创新技术风险控制

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Three-dimensional thermo-rheological structure of the lithosphere in the North China Craton determined by integrating multiple observations: Implications for the formation of rifts

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Science China Earth Sciences 2020年第7期63卷 969-984页

作者： Kai WANG Xiong XIONG yuming zhou Yashan FENG State Key Laboratory of Geodesy and Earth’s Dynamics Institute of Geodesy and GeophysicsChinese Academy of SciencesWuhan 430074China Institute of Geophysics and Geomatics China University of GeosciencesWuhan 430074China Department of Earth and Atmospheric Sciences Saint Louis UniversityMO 63108USA

The lithosphere of the North China Craton(NCC)has experienced significant destruction and deformation since the Mesozoic,a notable feature of which is the widespread extensional structure and lithospheric thinning in the eastern *** the thermo-rheological structure of the lithosphere is one of the main factors controlling these dynamic processes,a threedimensional thermo-rheological model of the present lithosphere in the NCC was developed based on a geophysical-petrological method using a variety of data,and its relationship with the extensional structures and the formation of rifts was further *** results show that the western NCC is characterized by thick lithosphere,low Moho temperature(TMoho1).The deformation of the western narrow rift is consistent with the localized deformation dominated by the strength of lithospheric *** the other hand,the lithosphere in the eastern NCC is characterized by extensive thinning(with lithospheric thickness of about 80–110 km).However,the decrease of lithospheric strength is not uniform,with high strength(10×1012 Pa m)observed in some areas(such as the Bohai Bay Basin and Hehuai Basin).Most of the eastern lithosphere is characterized by high TMoho(600–750°C)and low Sm/Sc(<1),which is inconsistent with the widespread extensional structure in the eastern *** results from palaeo-geothermal and petrological studies,we developed a thermo-rheological structure model of the lithosphere at different evolutionary stages of the NCC,and suggested that the eastern NCC had a significantly thinned and weakened lithosphere in the early stages of the formation of the rift,leading to a regional distributed extension deformation dominated by crustal strength,which eventually evolved into a series of wide ***,the cooling and accretion of the lithosphere in the subsequent stages significantly increased the strength of the

关键词： North China Craton Thermal structure Rheological structure Lithospheric deformation Rift

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