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山西冶金 2024年第2期47卷 139-140页

作者：王玉洪董强杜强连云港兴鑫钢铁有限公司江苏连云港222500

以连云港兴鑫钢铁有限公司轧钢厂实施备品备件长寿化管理为契机,分析了精轧机出口导卫的失效形式,对精轧机大规格出口导卫采用堆焊修复,小规格出口导卫采用导尖替代的修复方式,有效延长了备件的使用寿命,具有一定的实用价值和推广价值。

关键词：备品备件长寿化精轧机出口导卫堆焊导尖

Real-time intersection vehicle turning movement counts from live UAV video stream using multiple object tracking

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Journal of Intelligent and Connected Vehicles

Journal of Intelligent and Connected Vehicles 2023年第3期6卷 149-160页

作者： Yuhao wang Ivan wang-Hei Ho yuhong wang Department of Electrical and Electronic Engineering The Hong Kong Polytechnic UniversityHong Kong SARChina Otto Poon Charitable Foundation Smart Cities Research Institute The Hong Kong Polytechnic UniversityHong Kong SARChina Department of Civil and Environmental Engineering The Hong Kong Polytechnic UniversityHong Kong SARChina

The intelligent transportation system(ITS)is committed to ensuring safe and effective next-generation traffic throughout a ***,such efficient operation on urban traffic networks needs the support of big traffic data,especially Turning Movement Counts(TMC)at ***,TMC data are more challenging to collect due to labor cost and accuracy *** this paper,we leverage the capabilities of Unmanned Aerial Vehicles(UAV)to collect real-time TMC data in a cost-efficient *** proposed a real-time TMC data collection framework based on a live video *** vehicle tracking capability is boosted by multiple object tracking based on tracking by *** addition,a challenging case study was conducted,and our results demonstrate the feasibility and robustness of the proposed TMC data collection ***,with a GTX 1650 graphics card,about 10 FPS can be achieved in real-time for the TMC data *** overall accuracy is 91.93%,and the best case is over 98%*** the context of miscounting,the major reason is due to ID switching caused by background *** proposed framework is expected to provide real-time data for traffic capacity analysis and advanced traffic simulation such as digital twins.

关键词： turning movement counts unmanned aerial vehicles multi objects tracking real-time

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跳仓法技术在超长混凝土结构工程中的应用

建设监理 2024年第4期 111-115页

作者：王玉红陈士凯浙江江南工程管理股份有限公司深圳分公司广东深圳518026

跳仓法是一项“抗放兼施”的新型超长、大体积混凝土施工技术,对取代后浇带法和解决混凝土裂缝问题具有重要的应用价值。结合盐城南洋国际机场T2航站楼地下车库筏板工程所采用跳仓法实践案例,简述了跳仓法发展现状,分析了混凝土裂缝的... 详细信息

跳仓法是一项“抗放兼施”的新型超长、大体积混凝土施工技术,对取代后浇带法和解决混凝土裂缝问题具有重要的应用价值。结合盐城南洋国际机场T2航站楼地下车库筏板工程所采用跳仓法实践案例,简述了跳仓法发展现状,分析了混凝土裂缝的主要成因,阐述了跳仓法技术基本原理,研究了跳仓法技术控制要点,总结了工程效益方面的工作成效。结果表明,跳仓法施工技术对超长混凝土结构工程的质量提升、工期缩短、成本节约具有重要的现实意义。

关键词：跳仓法超长混凝土仓位裂缝施工技术

不同种植密度与氮肥互作对红花产量及品质的影响

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草业科学 2024年第2期41卷 404-415页

作者：毋玲玲魏玉杰宿翠翠张兆萍陈芳王玉红甘肃省农业工程技术研究院甘肃武威733006 甘肃省特种药源植物种质创新与安全利用重点实验室甘肃武威733006

为明确引黄灌区红花(Carthamus tinctorius)最佳种植密度和适宜氮肥施用量,本试验选用红花‘甘红1号’为试验材料,采用裂区设计,主区为施氮量,副区为种植密度,设3个施N水平(45、90、135 kg·hm^(-2))和4个种植密度(株行距分别为30 cm×6... 详细信息

为明确引黄灌区红花(Carthamus tinctorius)最佳种植密度和适宜氮肥施用量,本试验选用红花‘甘红1号’为试验材料,采用裂区设计,主区为施氮量,副区为种植密度,设3个施N水平(45、90、135 kg·hm^(-2))和4个种植密度(株行距分别为30 cm×60 cm、25 cm×60 cm、25 cm×50 cm、27 cm×40 cm),研究不同施氮量和种植密度对红花产量品质及氮素吸收利用的影响。结果表明,施氮量和种植密度显著影响红花产量品质及氮素利用,农艺性状、产量性状及氮素积累量随着两者的增加呈先增大后降低的趋势。籽粒产量、羟基红花黄色素A (HSYA)、氮素积累量、氮肥表观利用率和氮肥农学利用率受交互作用影响显著,干花产量对种植密度反应敏感。其中,施氮量90 kg·hm^(-2)、株行距25 cm×50 cm条件下,HSYA含量最高,其余指标在施氮量90 kg·hm^(-2)、株行距25 cm×60 cm条件下趋于最大。综合考虑产量、品质、氮素利用协同提高,在引黄灌区红花种植最佳施氮量为90 kg·hm^(-2),种植密度以株行距25 cm×50 cm或25 cm×60 cm为宜。

关键词：引黄灌区农艺形状氮素积累氮肥利用率株行距羟基红花黄色素A 种子含油率

Effects of Long-Term Fertilization on Soil Organic Carbon and Nitrogen in a Highland Agroecosystem

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Pedosphere 2017年第4期27卷 725-736页

作者： HAO Yajun wang yuhong CHANG Qingrui WEI Xiaorong College of Natural Resources and Environment Northwest A&F UniversityYangling 712100China State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau Northwest A&F UniversityYangling 712100China Institute of Soil and Water Conservation Chinese Academy of Sciences and Ministry of Water ResourcesYangling 712100China

The effects of fertilization on the distributions of organic carbon(OC) and nitrogen(N) in soil aggregates and whether these effects vary with cropping system have not been well *** information is important for understanding the sequestration of OC and N in agricultural *** this study,the distributions of OC and N associated with soil aggregates were analyzed in different fertilization treatments in a continuous winter wheat cropping system and a legume-grain rotation system in a 27-year field experiment,to understand the effects of long-term fertilization on the distributions of OC and N in aggregates and to examine the recovery of soil OC and N in a highland *** fertilizer significantly decreased soil bulk density but increased the amount of coarse fractions and their associated OC and N stocks in the soils of both *** N+phosphorus(P) and manure had similar effects on total soil OC and N stocks in both systems,but had larger effects on the OC and N stocks in>2 mm aggregates in the legume-grain rotation system than in the continuous winter wheat *** application of P increased the OC and N stocks in>2 mm aggregates and decreased the loss of N from chemical fertilizers in the legume-grain rotation *** results from this study suggested that P fertilizer should be applied for legume-included cropping systems and that manure with or without chemical fertilizers should be applied for semiarid cropping systems in order to enhance OC and N accumulation in soils.

关键词： chemical fertilizer, continuous winter wheat cropping, legume-grain rotation, manure, semiarid cropping system, soilaggregates

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卫生法学专业眼科教学视频案例库的应用

医学教育管理 2024年第2期10卷 204-208页

作者：高敏肖扬王育红王增旭首都医科大学附属北京朝阳医院眼科北京100043 首都医科大学附属北京朝阳医院社会工作办公室北京100043

目的探索卫生法学专业眼科教学视频案例库应用于卫生法学眼科教学的有效性和可接受性。方法将在北京朝阳医院临床见习的2020级20名卫生法学专业本科生纳入试验组(视频案例组),该组学生在课堂授课前需观看录制的卫生法学视频案例和阅读... 详细信息

目的探索卫生法学专业眼科教学视频案例库应用于卫生法学眼科教学的有效性和可接受性。方法将在北京朝阳医院临床见习的2020级20名卫生法学专业本科生纳入试验组(视频案例组),该组学生在课堂授课前需观看录制的卫生法学视频案例和阅读相关学习材料,其后展开课堂讨论,在讨论过程中教学相长、获取知识。与在北京朝阳医院临床见习的2018级20名卫生法学专业本科生(传统教学模式、对照组)进行对比研究,该组学生根据教学大纲参加教学讲座,并按教师规定完成作业、获取知识。教学结束时首先收集反馈问卷,比较学生对他们所经历的教学方法的看法,评估学生的自我感知能力和对眼科学习的兴趣。其后进行眼科学专业考试,包括眼科理论知识考试和临床见习知识考核,并对两组的成绩进行统计学分析比较。结果更多的法学系学生认为卫生法学专业眼科教学视频案例库引入教学有助于激发他们的学习动机,提高他们对卫生法学在眼科临床应用的理解,提高他们的沟通能力和应用法学思维去深入理解医学问题能力,两组间比较差异具有统计学意义(P<0.05)。与对照组相比,试验组的眼科理论考试成绩和临床见习知识掌握情况均显著提高,差异具有统计学意义(P<0.05)。结论卫生法学专业眼科教学视频案例库应用于临床教学具有广阔的发展前景,在广泛接受和实施之前,需要进一步补充、应用和完善。

关键词：教育卫生法学视频案例库眼科学教学

Optimization approach of background value and initial item for improving prediction precision of GM(1,1) model

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Journal of Systems Engineering and Electronics 2014年第1期25卷 77-82页

作者： yuhong wang Qin Liu Jianrong Tang Wenbin Cao Xiaozhong Li School of Business Jiangnan University

A combination method of optimization of the back-ground value and optimization of the initial item is proposed. The sequences of the unbiased exponential distribution are simulated and predicted through the optimization of the background value in grey differential equations. The principle of the new information priority in the grey system theory and the rationality of the initial item in the original GM（1,1） model are ful y expressed through the improvement of the initial item in the proposed time response function. A numerical example is employed to il ustrate that the proposed method is able to simulate and predict sequences of raw data with the unbiased exponential distribution and has better simulation performance and prediction precision than the original GM（1,1） model relatively.

关键词： background value initial item grey system theory,grey prediction.

Sub-2 nm ultra-thin Bi_(2)O_(2)CO_(3)nanosheets with abundant Bi-O structures toward formic acid electrosynthesis over a wide potential window

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Nano Research 2022年第4期15卷 2919-2927页

作者： yuhong wang Bin wang Wenjun Jiang Zailun Liu Jiangwei Zhang Lizhen Gao Wei Yao Qian Xuesen Laboratory of Space Technology China Academy of Space Technology104 Youyi RoadBeijing 100094China College of Environmental Science and Engineering Taiyuan University of TechnologyTaiyuan 030024China Dalian National Laboratory for Clean Energy&State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of Sciences(CAS)Dalian 116023China State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of Sciences(CAS)Fuzhou 350002China

The electrocatalytic reduction of CO_(2)to HCOOH(ERC-HCOOH)is one of the most feasible ways to alleviate energy crisis and solve environmental ***,it remains a challenge for ERC-HCOOH to maintain excellent activity and selectivity in a wide potential ***,ultra-thin flower-like Bi_(2)O_(2)CO_(3)nanosheets(NSs)with abundant Bi-O structures were in situ synthesized on carbon paper via topological transformation and *** efficiency of HCOOH(FEHCOOH)reached 90%in a wide potential window(-1.5 to-1.8 V ***/AgCl).Significantly,excellent FEHCOOH(90%)and current density(47 mA·cm^(-2))were achieved at-1.8 V ***/*** X-ray absorption fine structure(XAFS)combined with density functional theory(DFT)calculation demonstrated that the excellent performance of Bi_(2)O_(2)CO_(3)NS was attributed to the abundant Bi-O structures,which was conducive to enhancing the adsorption of CO_(2)^(*)and OCHO^(*)intermediates and can effectively inhibit hydrogen *** excellent performance of Bi_(2)O_(2)CO_(3)NS over a wide potential window could provide new insights for the efficient electrocatalytic conversion of CO_(2).

关键词： CO_(2)reduction Bi_(2)O_(2)CO_(3)nanosheets Bi-O structures X-ray absorption fine structure wide potential window

Sunlight-activated AlFeO_3/TiO_2 photocatalyst

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Science China Chemistry 2006年第1期49卷 67-74页

作者： YUAN Zhihao wang yuhong SUN Yongchang wang Jing BIE Lijian DUAN Yueqing Nanomaterials & Nanotechnology Research Center School of Materials Science & Engineering Tianjin University of Technology Tianjin 300191 China Nanomaterials & Nanotechnology Research Center School of Materials Science & Engineering Tianjin University of Technology Tianjin 300191 China Nanomaterials & Nanotechnology Research Center School of Materials Science & Engineering Tianjin University of Technology Tianjin 300191 China Nanomaterials & Nanotechnology Research Center School of Materials Science & Engineering Tianjin University of Technology Tianjin 300191 China Nanomaterials & Nanotechnology Research Center School of Materials Science & Engineering Tianjin University of Technology Tianjin 300191 China Nanomaterials & Nanotechnology Research Center School of Materials Science & Engineering Tianjin University of Technology Tianjin 300191 China

A nanocomposite photocatalyst composed of AlFeO3 and TiO2 is prepared, and charac-terized through X-ray diffraction. Application of the nanocomposite for the photodegradations of eosin dye and methyl orange gives an improved photoactivity compared with TiO2-only nanomaterials. The optimal concentration of AlFeO3 in the composite is about 1.0 wt% under UV excitation, and 9.0 wt% under sunlight excitation for the improved photoactivity. Furthermore, this nanocomposite is more active for eosin photodegradation if natural sunlight rather than UV is used. This may be due to the reason that adding AlFeO3 nanoparticles into TiO2 matrix can promote the separation of photogener-ated charge carriers, and extend the photoresponse of TiO2 toward visible region, which results in an increase in the solar energy utilization efficiency.

关键词： nanocomposite, photocatalysis, titania, aluminum ferrite.

Reductant-assisted polydopamine-modified membranes for efficient water purification

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Frontiers of Chemical Science and Engineering 2021年第1期15卷 109-117页

作者： Feng Sun Jinren Lu yuhong wang Jie Xiong Congjie Gao Jia Xu Key Laboratory of Marine Chemistry Theory and Technology(Ministry of Education) School of Materials Science and EngineeringCollege of Chemistry and Chemical EngineeringOcean University of ChinaQingdao 266100China National Center of Ocean Standards and Metrology Tianjin 300112China

Surface engineering with polydopamine coatings has been considered a promising surface functionalisation ***,it is difficult to control the self-polymerisation for polydopamine formation,which usually causes severe interparticle *** this study,polydopamine self-polymerisation was controlled by adjusting its reducing environment using a reductant(NaBH4)to fabricate mixed cellulose ester(MCE)/polydopamine *** oxidising environment using NaIO4 was additionally tested as the *** results showed that a thin polydopamine coating with small polydopamine particles was formed on the skeleton frameworks of the MCE membrane with NaBH4,and the self-polymerisation rate was *** polydopamine coating formed in the reducing environment facilitated excellent water transport performance with a water permeance of approximately 400 L·m^(−2)·h^(−1)·bar^(−1) as well as efficient organic foulant removal with a bovine serum albumin rejection of approximately 90%.In addition,the polydopamine coating with NaBH4 exhibited both excellent chemical stability and anti-microbial activity,demonstrating the contribution of the reducing environment to the performance of the MCE/polydopamine *** shows significant potential for use in water purification.

关键词： membrane water purification polydopamine reducing environment self-polymerization control