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新中国进出境动植物检疫职能发展历程及启示

海关与经贸研究 2024年第3期45卷 34-46页

作者：王传斌南京海关进出口食品安全处

新中国进出境动植物检疫职能发端于接收和改造国民政府进出口商品检验机构,历经对外贸易部门进出口商品检验机构承担主要职能,移交给农业部门牵头并组建专门动植物检疫机关以及商品检验机构保留部分职能,进出口商品检验、进出境动植物... 详细信息

新中国进出境动植物检疫职能发端于接收和改造国民政府进出口商品检验机构,历经对外贸易部门进出口商品检验机构承担主要职能,移交给农业部门牵头并组建专门动植物检疫机关以及商品检验机构保留部分职能,进出口商品检验、进出境动植物检疫、国境卫生检疫合并组建出入境检验检疫机构,直至当前划入海关等四个阶段,形成了具有中国特色进出境动植物检疫职能配置模式。进出境动植物检疫职能发展历程表明,集中统一管理、融入外经贸口岸监管大局是促进国门把关、提升服务发展效能的重要手段。站在新的起点,应在《生物安全法》框架下进一步发挥进出境动植物检疫国门安全防控职能;以《海关法》《进出境动植物检疫法》修订为契机,推动农业农村、林业草原、海关等部门进出境动植物检疫合作;以“智慧海关”建设为抓手,进一步优化关检业务深度融合机制,完善进出境动植物检疫“守国门、促发展”工作制度。

关键词：动植物检疫职能配置智慧海关国门生物安全贸易便利化

后扶贫时代高职院校“困难”学生群体画像的精准育人策略

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连云港师范高等专科学校学报 2024年第2期41卷 60-64页

作者：王传斌刘红江苏财会职业学院江苏连云港222006 连云港师范高等专科学校文学院江苏连云港222006

后扶贫时代,“困难”学生帮扶仍然是大学生思想政治教育工作的重要内容。在脱贫攻坚总体目标实现的背景下,高校要为“困难”学生提供个性化的成长指引。该研究通过学校大数据平台采集多维度数据,运用大数据挖掘技术的逻辑回归算法、决... 详细信息

后扶贫时代,“困难”学生帮扶仍然是大学生思想政治教育工作的重要内容。在脱贫攻坚总体目标实现的背景下,高校要为“困难”学生提供个性化的成长指引。该研究通过学校大数据平台采集多维度数据,运用大数据挖掘技术的逻辑回归算法、决策树算法等,对“困难”学生群体进行画像研究,分析后扶贫时代“困难”学生群体教育面临的问题,并从心理扶助、劳动教育、建优能力发展体系方面提出后扶贫时代精准育人的实践路径,以期为高职院校提升育人成效、促进学生全面发展提供参考。

关键词： “困难学生” 学生画像精准育人

Improvement of AlN Thermal Conductivity Based on Reductive Compound Additives

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Journal of Wuhan University of Technology(Materials Science) 2023年第5期38卷 1025-1033页

作者： LI Meijuan wang Chuanyi wang Gaoqiang wang chuanbin SHEN Qiang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China School of Chemistry Chemical Engineering and Life SciencesWuhan University of TechnologyWuhan 430070China Nanchong Three-circle Electronics Co.LTD. Nanchong 637100China

AlN ceramics were prepared by plasma activation sintering(PAS)with compound additives yttrium acetylacetonate(Y(acac)_(3))and melamine(C_(3)H_(6)N_(6)).The effects of compound additives on the microstructure,density,and thermal properties of Al N ceramic were studied.Y(acac)3and C_(3)H_(6)N_(6)can form Y_(2)O_(3),residual organic carbon and reducing gas during the heating process,which improves the Al N sintering performance at a temperature of 1700℃and the bulk thermal *** the content of Y(acac)_(3)is 10 wt%and C_(3)H_(6)N_(6)is 3 wt%,the thermal conductivity of Al N ceramics is 105.6 W/(m·K),which is much higher than that of Al N ceramics with Y_(2)O_(3)under the same sintering *** work provides theoretical reference for the preparation of high-performance Al N ceramic.

关键词： reductive compound additives AlN ceramic thermal conductivity:plasma activated sintering

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海口地区屋顶分布式光伏跟踪式支架应用研究

建筑电气 2024年第6期43卷 53-59页

作者：周密陈新东王川斌海南省设计研究院有限公司海口市570100 中国市政工程中南设计研究总院有限公司武汉市430000

对比几种光伏支架的特点,结合实际工程案例,仿真分析采用不同光伏支架时的发电效果,并通过计算投资回收期比较固定式支架与跟踪式支架的经济性,对提升光伏发电系统年单位发电量有积极作用。

关键词：分布式光伏固定式支架跟踪式支架平单轴跟踪系统斜单轴跟踪系统系统发电量单位发电量经济分析

The Structure and Properties of Multi-cations Doped KNN-based Piezoelectric Ceramics

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Journal of Wuhan University of Technology(Materials Science) 2023年第2期38卷 261-266页

作者： GAO Xiaoyi SUN Huajun HAO Hua wang chuanbin SHEN Qiang ZHANG Lianmeng State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan430070China State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan430070China

The piezoelectric strain of K_(0.5)Na_(0.5)NbO_(3)-based lead-free ceramic at different temperatures was *** Rayleigh analysis shows that the intrinsic and extrinsic contributions are increased at temperature from 173 to 298 *** addition,a monoclinic phase structure was observed at 83 *** results of phase field simulation show that the temperature dependent microstructure evolution is a function of the local structure *** work contributes to understanding the structure and properties relationship of the multi-cations doped KNN-based piezoelectric ceramics as a function of temperature.

关键词： microstructure evolution phase structure monoclinic phase strain behavior

Effect of ball milling time on the microstructure and compressive properties of the Fe–Mn–Al porous steel

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International Journal of Minerals,Metallurgy and Materials 2023年第5期30卷 917-929页

作者： Lingzhi Xie Zhigang Xu Yunzhe Qi Jinrong Liang Peng He Qiang Shen chuanbin wang Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan University of TechnologyWuhan 430070China School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China State Key Lab of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Wuhan Second Ship Design and Research Institute Wuhan 430205China

In the present work,Fe–Mn–Al–C powder mixtures were manufactured by elemental powders with different ball milling time,and the porous high-Mn and high-Al steel was fabricated by powder *** results indicated that the powder size significantly decreased,and the morphology of the Fe powder tended to be increasingly flat as the milling time ***,the prolonged milling duration had limited impact on the phase transition of the powder *** main phases of all the samples sintered at 640℃ were α-Fe,α-Mn and Al,and a small amount of Fe2Al5 and *** the sintering temperature increased to 1200℃,the phase composition was mainly comprised of γ-Fe and α-*** weight loss fraction of the sintered sample decreased with milling time,i.e.,8.3wt% after 20 h milling compared to15.3wt% for 10 *** Mn depletion region(MDR) for the 10,15,and 20 h milled samples was about 780,600,and 370 μm,*** total porosity of samples sintered at 640℃ decreased from ~46.6vol% for the 10 h milled powder to ~44.2vol% for 20 h milled *** sintering at 1200℃,the total porosity of sintered samples prepared by 10 and 20 h milled powder was ~58.3vol% and ~51.3vol%,*** compressive strength and ductility of the 1200℃ sintered porous steel increased as the milling time increased.

关键词： powder metallurgy porous steel ball milling time microstructure evolution compressive properties

New insight into the synergy of nitrogen-related sites on biochar surface for sulfamethoxazole adsorption from water

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中国化学快报:英文版 2023年第9期34卷 254-257页

作者： chuanbin wang Lingchao Kong Yanshan wang Xiaoqiang Cui Ning Li Beibei Yan Guanyi Chen School of Environmental Science and Engineering/Tianjin Engineering Research Center of Bio Gas/Oil Technology Tianjin UniversityTianjin 300072China School of Environmental Science&Engineering Southern University of Science and TechnologyShenzhen 518055China Georgia Tech Shenzhen Institute Tianjin UniversityShenzhen 518071China School of Mechanical Engineering Tianjin University of CommerceTianjin 300134China School of Science Tibet UniversityLhasa 850012China

In-depth exploration of the relationship among different adsorption sites is conducive to design of efficient adsorbents for target pollutants removal from *** this study,the experiments,multivariate non-linear regression and density functional theory calculations are applied to explore the possible synergistic effects of three nitrogen(N)-containing sites on cow dung biochar surface for sulfamethoxazole(SMX)***,a strong synergistic effect between pyridinic N and pyrrolic N sites was found for sulfamethoxazole *** adsorption energies of SMX on four pyrrolic N-coupled pyridinic N structures were-1.02,-0.41,-0.49 and-0.72 e V,much higher than the sum of adsorption energies(-0.31 e V)on pyrrolic N and pyridinic ***,the alteration of Mulliken charge revealed that the simultaneous presence of pyridinic N and pyrrolic N improved the electron transfer remarkably from-0.459 e and 0.094 e to-0.649 e and 0.186 e,benefiting for SMX *** work firstly explored the possible synergies of adsorption sites on biochar surface for organic contaminants removal from water,which shed new lights on the adsorption mechanism and provided valuable information to design efficient adsorbents in the field of water treatment.

关键词： Synergy Pyrrolic N Pyridinic N Biochar Adsorption

禽白血病病毒p27抗原ELISA检测试剂盒的比较与评估

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中国家禽 2024年第5期46卷 118-124页

作者：刘颖昳胡迪刘倩倩迟盛仁刘琳王传彬顾小雪中国动物疫病预防控制中心北京102618

为了更好地进行禽白血病监测与净化,研究使用由蛋清、细胞培养物、胎粪等多种样品组成的样品盘对7种禽白血病病毒(Avian leukosis virus,ALV)p27抗原ELISA检测试剂盒(国产试剂盒DA、DB、DC,进口试剂盒IA、IB、IC、IDEXX)进行比较。结果... 详细信息

为了更好地进行禽白血病监测与净化,研究使用由蛋清、细胞培养物、胎粪等多种样品组成的样品盘对7种禽白血病病毒(Avian leukosis virus,ALV)p27抗原ELISA检测试剂盒(国产试剂盒DA、DB、DC,进口试剂盒IA、IB、IC、IDEXX)进行比较。结果显示:从分析特性上看,试剂盒分析特异性均较好,未观察到与其他常见禽源病毒的交叉反应;与IDEXX相比,DA、IA的分析敏感性较高,DB、IC其次,DC、IB较低,对于ALV不同亚群,各种试剂盒分析敏感性差异可达2~3个稀释度;从诊断特性上看,与IDEXX相比,DB、DC和IC的诊断敏感性和诊断特异性均高于90%;DA、IA和IB与IDEXX的诊断敏感性和诊断特异性均高于80%;各试剂盒对于不同类型样品(DF-1细胞培养物、蛋清、胎粪)的诊断敏感性和诊断特异性存在差异;从重复性上看,DA和IA的批内变异系数均在15%以内。综上所述,与IDEXX相比,当前国产p27抗原ELISA检测试剂盒DA和DB、进口p27抗原ELISA检测试剂盒IA和IC的各项性能可满足禽白血病净化各阶段对不同类型样品的检测需求。

关键词：禽白血病病毒净化 ELISA p27抗原

Synthesis of a novel Al foam with a periodic architecture by introducing hollow Al tubes and Al/Mg powders

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Journal of Materials Science & Technology 2023年第17期148卷 105-115页

作者： Zhigang Xu Dayong Shen Kai wang Peng He Jian Zhang Hao Zhang Peng Cao Shangyu Huang Jian Peng Qiang Shen chuanbin wang Lianmeng Zhang Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan University of TechnologyWuhan 430070China State Key Lab of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China Wuhan Second Ship Design and Research Institute Wuhan 430205China Department of Chemical and Materials Engineering University of AucklandPrivate Bag 92019Auckland 1142New Zealand

In this work,we synthesized a brand-new Al foam with a periodic structure via a simple powder metallurgical *** periodic architecture consists of both hierarchical porous and bi-directional composition-graded *** results show that the hierarchical porous material includes large pores on millimeter scale inheriting from the hollow structure of the Al tubes,and small pores on mi-crometer scale produced by the sintering of Al/Mg *** bi-directional Mg concentration-graded structure is formed in the tube walls due to the condensation of Mg vapor in the inner tube *** addition of Mg powders achieves excellent metallurgical bonding between the Al powders and the hollow tubes at 550℃.The plateau stress and energy absorption capacity of the Al foam in y-axis compression are significantly higher than that in the x-axis due to their anisotropic *** general,the Al foam with Mg addition presents the most superior compression performance,and we believe that our find-ings could open up a unique strategy for developing high-performance metallic foams with the periodic architecture involving both hierarchical porous and bi-directional graded structure.

关键词： Al foam Hollow Al tube Mg evaporation Bi-directional composition-graded structure Compression properties Energy absorbing performance