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Science China(Technological Sciences) 2023年第7期66卷 2069-2079页

作者： SHANG ChunLei WANG ChuanJun WU HongHui LIU WenYue CHEN YiMian PAN GuangFei WANG ShuiZe WU GuiLin GAO JunHeng ZHAO HaiTao zhang chaolei MAO XinPing Beijing Advanced Innovation Center for Materials Genome Engineering Innovation Research Institute for Carbon NeutralityUniversity of Science and Technology BeijingBeijing 100083China State Key Laboratory of Metal Materials for Marine Equipment and Application Anshan 114009China Ansteel Beijing Research Institute Co.Ltd. Beijing 102200China

Pipeline transportation is one of the most economical ways to transport crude oil and natural gas over long distances.High toughness is one of the important qualities of pipeline steel to ensure safe transportation,wherein a key factor characterizing toughness is Charpy impact toughness(CIT).In this work,according to the production line data provided by a steel mill and the experimental data collected in literature,two machine learning model construction strategies were proposed.One was based solely on the production line dataset,and the other was based on the production line dataset together with the literature dataset.In these two strategies,the random forest model displayed the best prediction results,the accuracy of strategy I was 0.58,and the accuracy of strategy II was 0.90,wherein literature data effectively improved the CIT prediction accuracy.Finally,an optimized CIT model based on machine learning algorithms was established.The proposed strategy of literature data-assisted production line data provides a new perspective for optimizing and predicting the performance of traditional structural materials.

关键词： data-driven design pipeline steel Charpy impact toughness machine learning

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基于蒙特卡罗模型的高浓度浆液细度在线测量

仪器仪表学报 2024年第1期45卷 170-179页

作者：张世玮刘鸿彬陈朝雷田昌苏明旭上海理工大学能源与动力工程学院上海200093 上海市动力工程多相流动与传热重点实验室上海200093

近年来颗粒粒径测量问题受到了国内外的广泛研究。针对燃煤电厂高浓度脱硫石灰石浆液细度在线测量,将基于蒙特卡罗方法的声衰减模型拓展至高浓度范围,高浓度蒙特卡罗模型(HC-MCM)预测衰减系数与实验测量值相吻合。构建HC-MCM矩阵用于颗... 详细信息

近年来颗粒粒径测量问题受到了国内外的广泛研究。针对燃煤电厂高浓度脱硫石灰石浆液细度在线测量,将基于蒙特卡罗方法的声衰减模型拓展至高浓度范围,高浓度蒙特卡罗模型(HC-MCM)预测衰减系数与实验测量值相吻合。构建HC-MCM矩阵用于颗粒粒径分布的反演可减小计算时间,且差分进化算法的计算结果与设定粒径和分布宽度的相对误差小于1%。搭建基于透射和反射法的双模式超声检测装置并开发软件测量系统,加工适用于高浓度浆液细度测量的透射传感器和超声探针,依托燃煤电厂完成长达168 h的浆液细度在线测量实验。结果表明,两种模式超声衰减谱的变化趋势和数值大小基本吻合。粒径分布参数D_(V50)与激光粒度仪测量结果的相对误差小于8%,其粒径分布满足燃煤电厂成品石灰石浆液的细度要求。

关键词：高浓度石灰石浆液蒙特卡罗模型超声测量粒径分布

Nationwide distribution of polycyclic aromatic hydrocarbons in soil of China and the association with bacterial community

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Journal of Environmental Sciences 2023年第6期128卷 1-11页

作者： Qiuyue zhang Meng Gao Xinhui Sun Yu Wang chaolei Yuan Hongwen Sun MOE Key Laboratory of Pollution Processes and Environmental Criteria College of Environmental Science and EngineeringNankai UniversityTianjin 300350China School of Agriculture Sun Yat-sen UniversityShenzhen 518107China

Soil contamination by polycyclic aromatic hydrocarbons(PAHs)has raised great environmental concerns.However,the information on national wide distribution of PAHs in soil as well as their effect on soil bacterial community are limited.In this study,16 PAHs weremeasured in 94 soil samples collected across China.The total concentration of 16 PAHs(PAHs)in soil ranged from 74.0 to 17,657 ng/g(dry weight basis),with a median value of 200 ng/g.Pyrene was themajor soil PAH,with amedian concentration of 71.3 ng/g.Soil samples from Northeast China had a higher median concentration ofPAHs(1,961 ng/g)than those from other regions.Petroleum emission and wood/grass/coal combustion were potential sources for soil PAHs based on diagnostic ratios and positive matrix factors analysis.A nonnegligible ecological risk(hazard quotients>1)was found in over 20%of soil samples analyzed and the highestmedian total HQs value(8.53)was found in soils from Northeast China.The effect of PAHs on bacterial abundance,α-diversity,andβ-diversity was limited in the soils surveyed.Nevertheless,the relative abundance of some members in genera Gaiella,Nocardioides,and Clostridium was significantly correlated with the concentrations of some PAHs.Especially,the bacterium Gaiella Occulta showed potential in indicating soil contamination by PAH,which is worth further exploration.

关键词： PAHs Soil Source analysis Bacterial community

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材质对谐波减速器刚轮的耐磨性能影响

机械传动 2024年第4期48卷 126-130页

作者：穆晓彪葛艺高明艳杨国强张朝磊北京中技克美谐波传动股份有限公司北京101318 北京科技大学碳中和研究院北京100083

采用3种谐波减速器用刚轮材料——2Cr13不锈钢、40Cr中碳合金钢、45钢,通过对其显微组织、硬度、三维及二维形貌的显微磨损、摩擦因数的分析,探究不同材料耐磨性能的差异。结果表明,2Cr13、40Cr的显微组织为回火索氏体,45钢的显微组织... 详细信息

采用3种谐波减速器用刚轮材料——2Cr13不锈钢、40Cr中碳合金钢、45钢,通过对其显微组织、硬度、三维及二维形貌的显微磨损、摩擦因数的分析,探究不同材料耐磨性能的差异。结果表明,2Cr13、40Cr的显微组织为回火索氏体,45钢的显微组织为铁素体与珠光体。2Cr13、40Cr硬度相近且远大于45钢。2Cr13磨损形貌为黏着与剥落,磨损机制为黏着磨损;40Cr、45钢磨损形貌为犁沟与剥落、犁沟与黏着,磨损机制为磨粒磨损。3种材料的摩擦因数相差可忽略不计。2Cr13、40Cr、45钢截面的磨损面积分别为5008、1645、6535μm2。硬度相近下,40Cr表现出比2Cr13更优异的耐磨性能。45钢与摩擦副材料的硬度值相差最大,耐磨性能最差。

关键词：谐波减速器刚轮材质磨损机制耐磨性能

维普期刊数据库博看期刊

Metal-Oxo Cluster Catalysts for Photocatalytic Water Splitting and Carbon Dioxide Reduction

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Transactions of Tianjin University 2022年第3期28卷 214-225页

作者： Qing Lan Sujuan Jin Bohan Yang Qiang Zhao chaolei Si Haiquan Xie Zhiming zhang Engineering Technology Research Center of Henan Province for Solar Catalysis College of Chemistry and Pharmaceutical EngineeringNanyang Normal UniversityNanyang 473061China Institute of New Energy Materials and Low Carbon Technology Tianjin University of TechnologyTianjin 300384China

Photocatalytic water splitting and carbon dioxide photoreduction are considered eff ective strategies for alleviating the energy crisis and environmental pollution.Polynuclear metal-oxo clusters possess excellent electron storage/release ability and unique catalytic properties via intermetallic synergy,which enables them with great potential in environmentally friendly photosynthesis.Importantly,metal-oxo clusters with precise structure can not only act as high-effi ciency catalysts but also provide well-defi ned structural models for exploring structure-activity relationships.In this review,we systematically sum-marize recent progress in the catalytic application of polynuclear metal-oxo clusters,including polyoxometalate clusters,low-cost transition metal clusters,and metal-oxo-cluster-based metal-organic frameworks for water splitting and CO_(2)reduction.Furthermore,we discuss the challenges and solutions to the problems of polynuclear metal-oxo clusters in photocatalysis.

关键词： Water splitting Carbon dioxide photoreduction Photocatalysis Polynuclear metal-oxo clusters Polyoxomatalate

基于InVEST模型和PLUS模型的云贵高原产水量时空变化特征分析

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现代地质 2024年第3期38卷 624-635页

作者：郭佳晖刘晓煌张文博杨朝磊王然雒新萍邢莉圆王超赵宏慧新疆大学地理与遥感科学学院新疆乌鲁木齐830017 自然资源要素耦合过程与效应重点实验室北京100055 金沙江高山峡谷区水土资源演化与固碳增汇效应云南省野外科学观测研究站云南楚雄651400 中国地质调查局自然资源综合调查指挥中心北京100055 中国地质调查局昆明自然资源综合调查中心云南昆明650111

对云贵高原产水量进行定量评估与研究,有利于探究该地区水资源的动态变化、维护该地区的生态安全以及构建该地区的生态平衡,对维持城市水源涵养具有重要的现实意义。本研究利用PLUS模型预测该地区2025与2030年土地利用类型,利用InVEST... 详细信息

对云贵高原产水量进行定量评估与研究,有利于探究该地区水资源的动态变化、维护该地区的生态安全以及构建该地区的生态平衡,对维持城市水源涵养具有重要的现实意义。本研究利用PLUS模型预测该地区2025与2030年土地利用类型,利用InVEST模型定量估算2000—2030年(以5年为一期)产水量,并对其进行时空分析;剖析了不同土地利用类型及不同坡度等级下的产水量变化情况;利用地理探测器对产水量进行驱动力分析。结果表明:(1)2000—2030年该地区产水总量呈现“下降-升高-下降-升高”的趋势,其产水总量分别是:7.818×10^(7)m^(3)、5.750×10^(7)m^(3)、4.700×10^(7)m^(3)、9.162×10^(7)m^(3)、7.498×10^(7)m^(3)、7.820×10^(7)m^(3)、8.999×10^(7)m^(3);产水量空间分布呈现东南和北部高、中部低特征;(2)未利用地是该地区产水量最高的地类;(3)气象因子的变化是引起云贵高原年产水量变化的主要因素。地理探测器的分析表明降水量、蒸散发量对产水量的解释力较强,降水量和土地利用的交互作用对产水量变化的解释力最强。产水量集中在坡度为0°~5°的区域,占总产水量的43.80%。研究结果可为云贵高原水资源的动态评估、有效管理和可持续发展提供科学参考。

关键词：产水量 InVEST模型 PLUS模型云贵高原地理探测器时空特征

Chemical oxidation of arsenic in the environment and its application in remediation: A mini review

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Pedosphere 2023年第1期33卷 185-193页

作者： chaolei YUAN Qi LI Zhaoyang SUN Wenjun zhang Jiangrong CHEN Zheng CHEN Shuo NA Hongwen SUN Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria Tianjin Key Laboratory of Environmental Remediation and Pollution ControlCollege of Environmental Science and EngineeringNankai UniversityTianjin 300350China The Institute of Seawater Desalination and Multipurpose Utilization Ministry of Natural ResourcesTianjin 300192China Department of Health and Environmental Sciences Xi’an Jiaotong-Liverpool UniversitySuzhou 215123China

Arsenic(As)contamination in soil and water poses a serious threat to the ecosystem health and human beings,and is of widespread concern.The main As species found in soil and water are arsenite As(Ⅲ)and arsenate As(V).Because As(Ⅲ)is more toxic and often more mobile than As(Ⅴ),many remediation strategies aim to oxidize As(Ⅲ)to As(Ⅴ).In the environment,the reduction of As(Ⅴ)under anaerobic conditions is mainly mediated by microorganisms,but the oxidation of As(Ⅲ)under aerobic conditions can be mediated primarily by chemical processes.This article first reviews the existing knowledge on chemical oxidation of As(Ⅲ)in the environment,with an emphasis on the roles of iron(Fe)and manganese(Mn)oxides.The application of Fe and Mn oxides for the remediation of As-contaminated soil and water is then summarized.The oxidation of As(Ⅲ)by oxygen is very slow in the absence of catalysts.Many Mn oxides,on the other hand,can efficiently oxidize As(Ⅲ).Although the oxidation of As(Ⅲ)by Fe(Ⅲ)is also slow,this process can be accelerated by light or Fe(Ⅱ).Iron and Mn oxides are widely used for the remediation of As-contaminated soil and water,with Fe oxides generally acting as absorbents while Mn oxides as oxidants.To better understand and regulate As transformation and transport in the environment,further study is needed on the mechanisms and influencing factors of As(Ⅲ)oxidation by Fe and Mn oxides,and the development of innovative methods and materials based on Fe and Mn oxides are desired.

关键词： As contamination iron oxide manganese oxide soil water

Pulsed electrolysis of carbon dioxide by large-scale solid oxide electrolytic cells for intermittent renewable energy storage

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Carbon Energy 2023年第4期5卷 2-12页

作者： Anqi Wu chaolei Li Beibei Han Wu Liu Yang zhang Svenja Hanson Wanbing Guan Subhash C.Singhal Key Laboratory of Advanced Fuel Cells and Electrolyzers Technology of Zhejiang Province Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingboZhejiangChina Faculty of Science and Engineering University of Nottingham Ningbo ChinaNingboZhejiangChina

CO_(2) electrolysis with solid oxide electrolytic cells(SOECs)using intermittently available renewable energy has potential applications for carbon neutrality and energy storage.In this study,a pulsed current strategy is used to replicate intermittent energy availability,and the stability and conversion rate of the cyclic operation by a large-scale flat-tube SOEC are studied.One hundred cycles under pulsed current ranging from -100 to -300 mA/cm^(2) with a total operating time of about 800 h were carried out.The results show that after 100 cycles,the cell voltage attenuates by 0.041%/cycle in the high current stage of−300 mA/cm^(2),indicating that the lifetime of the cell can reach up to about 500 cycles.The total CO_(2) conversion rate reached 52%,which is close to the theoretical value of 54.3% at -300 mA/cm^(2),and the calculated efficiency approached 98.2%,assuming heat recycling.This study illustrates the significant advantages of SOEC in efficient electrochemical energy conversion,carbon emission mitigation,and seasonal energy storage.

关键词： carbon dioxide cyclic electrolysis pulse current solid oxide electrolytic cells

基于CiteSpace中医药领域治疗帕金森病研究热点和趋势的可视化分析

维普期刊数据库评论

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维普期刊数据库

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齐齐哈尔医学院学报 2024年第7期45卷 661-667页

作者：苏小果谭文澜张永全农朝雷广西中医药大学研究生院广西南宁530001 广西中医药大学附属瑞康医院神经内科广西南宁530001 广西中医药大学附属瑞康医院急诊科广西南宁530001

目的基于CiteSpace软件分析中医药领域下治疗帕金森病的研究热点和趋势。方法检索中国知网1990年1月—2022年12月的相关文献,通过CiteSpace 6.1.R6软件绘制相关可视化知识图谱,分别对发文趋势、作者合作情况、关键词共现、聚类、突现... 详细信息

目的基于CiteSpace软件分析中医药领域下治疗帕金森病的研究热点和趋势。方法检索中国知网1990年1月—2022年12月的相关文献,通过CiteSpace 6.1.R6软件绘制相关可视化知识图谱,分别对发文趋势、作者合作情况、关键词共现、聚类、突现情况进行分析,探讨该领域的研究热点及趋势。结果最终纳入1210篇文献,年发文量总体呈曲线上升的趋势,作者发文量最高的是何建成,机构发文量最高的是广西中医药大学,但多以个人、团队内部研究为主,缺乏领域之间的合作。研究热点和趋势为中西医结合治疗、微生物肠脑轴、非运动症状、针灸治疗、生活质量、数据挖掘等。结论中医药领域帕金森病研究发展前景良好,建议加强作者、机构间的合作,以期提高中医药对帕金森病的临床疗效。

关键词：帕金森病中医药 CiteSpace 文献计量学可视化分析

广东省35~75岁居民健康生活方式现状分析

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岭南心血管病杂志 2024年第2期30卷 201-207页

作者：王佳彬陈超磊冯颖青张玲玲南方医科大学附属广东省人民医院(广东省医学科学院)国际健康研究中心广州510080 南方医科大学附属广东省人民医院(广东省医学科学院)广东省心血管病研究所高血压病研究室广州510080 南方医科大学附属广东省人民医院(广东省医学科学院)广东省心血管病研究所办公室广州510080

目的分析广东省35~75岁居民遵循健康生活方式的现状,为制定针对性的慢性病防控措施和健康促进策略提供参考。方法本研究使用2016-2019年度广东省“心血管病高危人群早期筛查和综合干预项目”研究人群数据,调查广东省35~75岁居民健康生... 详细信息

目的分析广东省35~75岁居民遵循健康生活方式的现状,为制定针对性的慢性病防控措施和健康促进策略提供参考。方法本研究使用2016-2019年度广东省“心血管病高危人群早期筛查和综合干预项目”研究人群数据,调查广东省35~75岁居民健康生活方式(包括不吸烟、不饮酒或适量饮酒、充足身体活动及健康饮食)的分布特征,并分析健康生活方式与人口学、社会经济特征的相关性。结果研究共纳入26135名研究对象。根据年龄和性别进行标准化后,遵循不饮酒或适量饮酒、不吸烟、充足身体活动和健康饮食4种健康生活方式的比例分别为98.4%、78.1%、31.3%和8.8%,仅有2.6%的研究对象同时遵循了上述4种健康生活方式。相比而言,女性、老年人、受教育程度高、家庭收入高、未婚、自报患有原发性高血压(高血压)或糖尿病的研究对象更有可能遵循健康生活方式(P<0.05)。结论广东省35~75岁居民同时具备所有健康生活方式的比例较低,且遵循健康生活方式存在人群差异。应采取综合和针对性的干预措施,以促进慢性病防控工作。

关键词：健康生活方式人群分布健康促进策略慢病