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Journal of Materials Science & Technology 2024年第4期171卷 129-138页

作者： Yuting Jin Jiaqi Li mingxing zhang Borui Zheng Dake Xu Tingyue Gu Fuhui Wang Shenyang National Laboratory for Materials Science Northeastern UniversityShenyang 110819China Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education) Northeastern UniversityShenyang 110819China Department of Chemical and Biomolecular Engineering Institute for Corrosion and Multiphase TechnologyOhio UniversityAthens OH 45701USA

Microbes can cause or accelerate metal corrosion,leading to huge losses in corrosion damages each *** sulfurreducens is a representative electroactive bacterium in many soils,sediments,and wastew-ater *** has been confirmed to directly extract electrons from elemental ***,little is known about the effect of electron shuttles in *** corrosion on stainless *** this study,we report that exogenous flavins promote iron-to-microbe electron transfer,accelerating micro-bial *** caused 1.3 times deeper pits and increased electron uptake(with 2 times increase of i_(corr))from stainless steel when riboflavin was added to the culture ***-deficient mutant data suggest that *** utilizes riboflavin as a bound-cofactor in outer membrane c-type *** finding that,in the presence of microbes,riboflavin can substantially accelerate corrosion highlights the role of flavin redox cycling for enhanced iron-to-microbe electron transfer by *** and provides new insights in microbial corrosion.

关键词： Extracellular electron transfer Microbiological corrosion Geobacter sulfurreducens Outer membrane c-type cytochromes Exogenous flavins

Flexible interdigitated layered framework with multiple accessible active sites for high-performance CH_(3)I capture

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Science China Chemistry 2024年第5期67卷 1569-1577页

作者： Bo Tai Baoyu Li Linwei He Zhonglin Ma Shujing Lin mingxing zhang Junchang Chen Fuqi Wu Long Chen Xing Dai Fuyin Ma Zhifang Chai Shuao Wang State Key Laboratory of Radiation Medicine and Protection School for Radiological and interdisciplinary Sciences(RAD-X)and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education InstitutionsSoochow UniversitySuzhou 215123China

The development of adsorbent materials for effective capture of radioactive iodomethane(CH_(3)I) from the off-gas of used nuclear fuel reprocessing, remains a significant and challenging line of research because currently state-of-art adsorbents still suffer from low binding affinity with CH_(3)I. Here, we proposed a brand-new adsorption topological structure by developing a 2D interdigitated layered framework, named SCU-20, featuring slide-like channel with multiple active sites for CH_(3)I capture. The responsive rotating-adaptive aperture of SCU-20 enables the optimal utilization of all active sites within the pore for highly selective recognition and capture of CH_(3)I. A record-breaking CH_(3)I uptake capacity of 1.84 g/g was achieved under static sorption conditions with saturated CH_(3)I vapor. Both experimental and theoretical findings demonstrated that the exceptional uptake of SCU-20 towards CH_(3)I can be attributed to the confined physical electrostatic adsorption of F sites, coupled with the chemical nitrogen methylation reaction with uncoordinated N atoms of pyrazine. Moreover, dynamic CH_(3)I uptake capacity potentially allows for the capture of CH_(3)I in simulated real-world off gas reprocessing conditions. This study highlights the potential of SCU-20 as a promising candidate for efficient capture of iodine species and contributes to the development of effective solutions for radioactive iodine remediation.

关键词： 2D interdigitated layered framework iodomethane dual-sites electrostatic interaction physisorption and chemisorption

Flexible interdigitated layered framework with multiple accessible active sites for high-performance CHI capture

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Science China Chemistry 2024年

作者： Bo Tai Baoyu Li Linwei He Zhonglin Ma Shujing Lin mingxing zhang Junchang Chen Fuqi Wu Long Chen Xing Dai Fuyin Ma Zhifang Chai Shuao Wang State Key Laboratory of Radiation Medicine and Protection School for Radiological and interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions Soochow University

The development of adsorbent materials for effective capture of radioactive iodomethane(CH3I) from the off-gas of used nuclear fuel reprocessing, remains a significant and challenging line of research because currently state-of-art adsorbents still suffer from low binding affinity with CH3I. Here, we proposed a brand-new adsorption topological structure by developing a 2D interdigitated layered framework, named SCU-20, featuring slide-like channel with multiple active sites for CH3I capture. The responsive rotating-adaptive aperture of SCU-20 enables the optimal utilization of all active sites within the pore for highly selective recognition and capture of CH3I. A record-breaking CH3I uptake capacity of 1.84 g/g was achieved under static sorption conditions with saturated CH3I vapor. Both experimental and theoretical findings demonstrated that the exceptional uptake of SCU-20 towards CH3I can be attributed to the confined physical electrostatic adsorption of F sites, coupled with the chemical nitrogen methylation reaction with uncoordinated N atoms of pyrazine. Moreover, dynamic CH3I uptake capacity potentially allows for the capture of CH3I in simulated real-world off gas reprocessing conditions. This study highlights the potential of SCU-20 as a promising candidate for efficient capture of iodine species and contributes to the development of effective solutions for radioactive iodine remediation.

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基于深度强化学习的氢能综合能源系统优化调度方法

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电力系统自动化 2024年第16期48卷 132-141页

作者：张磊吴红斌何叶徐斌张明星丁明新能源利用与节能安徽省重点实验室(合肥工业大学) 安徽省合肥市230009 国网安徽省电力有限公司电力科学研究院安徽省合肥市230601 国网安徽省电力有限公司六安供电公司安徽省六安市237000

为实现碳减排目标,氢能与综合能源系统的结合成为最具潜力的发展方向之一。针对当前氢能综合能源系统调度策略灵活性不足、复杂系统多目标优化求解困难等问题,提出一种基于深度强化学习的氢能综合能源系统优化调度方法。首先,采用耦合... 详细信息

为实现碳减排目标,氢能与综合能源系统的结合成为最具潜力的发展方向之一。针对当前氢能综合能源系统调度策略灵活性不足、复杂系统多目标优化求解困难等问题,提出一种基于深度强化学习的氢能综合能源系统优化调度方法。首先,采用耦合设备的变工况模型,构建风-光-氢-冷-热-电综合能源系统,拓展设备联合供能空间。其次,考虑系统运行成本、碳排放量、系统自供给平衡度和新能源利用率,基于最优解距离构建多目标优化模型,激发智能体探索性。然后,通过时序片段表征优化深度强化学习算法,增强了智能体对系统状态变化的估计精度。最后,在源荷实测数据的基础上设计仿真算例。结果表明,所提方法可以有效提高氢能综合能源系统调度的灵活性,充分挖掘氢能的碳减排潜力,实现调度经济性和环保性的双重优化。

关键词：综合能源系统氢能优化调度深度强化学习多目标优化可再生能源

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面向轻量化的改进YOLOv7棉杂检测算法

计算机应用 2024年第7期44卷 2271-2278页

作者：张勇进徐健张明星西安工程大学电子信息学院西安710048

针对棉纺厂原棉吞吐量大、检测时间长而常见卷积神经网络无法实现高实时检测的问题,提出基于轻量化改进的YOLOv7模型对原棉杂质的检测算法,旨在快速高效地对棉杂质进行检测。首先通过删减YOLOv7模型冗余的卷积层从而提高检测速度;其次... 详细信息

针对棉纺厂原棉吞吐量大、检测时间长而常见卷积神经网络无法实现高实时检测的问题,提出基于轻量化改进的YOLOv7模型对原棉杂质的检测算法,旨在快速高效地对棉杂质进行检测。首先通过删减YOLOv7模型冗余的卷积层从而提高检测速度;其次在主干网络内添加FasterNet卷积降低模型的计算负担,减少特征图的冗余性,实现高实时检测;最后在颈部网络内运用CSP-RepFPN(Cross Stage Partial networks with Replicated Feature Pyramid Network)重构特征金字塔,增加特征信息流通,减少特征损失,提高检测精度。实验结果表明:在自建棉杂数据集上改进的YOLOv7模型在棉杂检测精度上达到了96.0%,检测时间比YOLOv7减少了37.5%;在公开DWC(Drinking Waste Classification)数据集上整体精度达到82.5%,检测时间仅为29.8 ms。改进的YOLOv7模型能够为原棉杂质的实时检测和识别分类提供一种轻量化的检测方法,大幅节约了时间成本。

关键词：棉杂检测 YOLOv7 CSP-RepFPN 轻量化

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工业物联网中基于任务紧急程度的资源分配算法

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电信科学 2024年第3期40卷 29-38页

作者：邹虹卓赛张鸿张明兴吴大鹏重庆邮电大学通信与信息工程学院重庆400065 先进网络与智能互联技术重庆市高校重点实验室重庆400065 泛在感知与互联重庆市重点实验室重庆400065

工业物联网中任务的生成通常具有连续性和周期性,并且任务对时延要求很高,这给系统成本带来了挑战。为应对这一挑战,提出了一种基于任务紧急程度的成本最小化资源分配算法。通过遗传算法优化任务的卸载策略和系统的资源分配策略,对于卸... 详细信息

工业物联网中任务的生成通常具有连续性和周期性,并且任务对时延要求很高,这给系统成本带来了挑战。为应对这一挑战,提出了一种基于任务紧急程度的成本最小化资源分配算法。通过遗传算法优化任务的卸载策略和系统的资源分配策略,对于卸载的任务,根据任务的紧急程度进行调度,并在满足时延要求的前提下计算任务的最优发射功率。仿真结果表明,所提算法有效改善了系统总能耗成本。

关键词：工业物联网资源分配遗传算法

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基于中西医临床病证特点的休克动物模型分析

中药药理与临床 2024年第2期40卷 109-114页

作者：张明星刘静白明苗明三河南中医药大学郑州450046 道地药材深加工河南省工程实验室郑州450046

目的:基于休克的中西医临床病证特点,分析评价现有常用休克动物模型复制方法及其与临床诊断标准的吻合度,总结休克动物模型与临床病证特点的契合程度和优缺点,为完善休克动物模型提供思路和参考。方法:建立中西医临床诊断标准,对现有各... 详细信息

目的:基于休克的中西医临床病证特点,分析评价现有常用休克动物模型复制方法及其与临床诊断标准的吻合度,总结休克动物模型与临床病证特点的契合程度和优缺点,为完善休克动物模型提供思路和参考。方法:建立中西医临床诊断标准,对现有各种模型复制方法的表现症状和相关指标进行赋值分析,统计其与临床吻合度大小。结果:大部分模型制备的症状特征更加契合西医诊断标准,建立合适的病证结合动物模型能更好地反应临床,在休克动物模型的发展与完善中应更多体现中医证候特点。结论:实验动物的选择、因素的可控性、单因素强弱、多因素的互相结合和无关干扰较小的施加方式等对休克动物模型建立起到至关重要的作用。模型复制方法应该更经济,效率更高,可重复性更好,更符合中西医临床表现。

关键词：休克厥脱证模型建立病证结合

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生物反馈助力电刺激对慢性非特异性腰痛患者下肢步行功能的改善

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中国组织工程研究 2025年第3期29卷 547-553页

作者：郑翔张明兴黄雅单莎瑞广东药科大学附属第一医院广东省广州市510080

背景:国内外关于慢性非特异性腰痛生物反馈疗法和三维步态功能分析的相关研究已开展很多,但是对二者结合的研究少有报道。目的:利用三维步态分析采集步态参数数据,研究生物反馈助力电刺激对慢性非特异性腰痛患者步行能力的改变效果。方... 详细信息

背景:国内外关于慢性非特异性腰痛生物反馈疗法和三维步态功能分析的相关研究已开展很多,但是对二者结合的研究少有报道。目的:利用三维步态分析采集步态参数数据,研究生物反馈助力电刺激对慢性非特异性腰痛患者步行能力的改变效果。方法:选择2021年6月至2022年9月在广东药科大学附属第一医院收治的60例慢性非特异性腰痛患者,男34例,女26例,年龄32-58岁。采用随机数字表法将60例患者分为对照组(n=30)与试验组(n=30),两组患者均接受腰部动态干扰电的常规治疗(20 min/次,1次/d,每周5次,持续治疗20次),对照组患者在常规治疗的基础上进行仰卧搭桥和俯卧搭桥的悬吊核心肌群训练(每周5次,持续治疗20次),试验组在对照组治疗的基础上进行生物反馈助力电刺激治疗(20 min/次,1次/d,每周5次,持续治疗20次)。比较分析两组患者治疗前后的腰痛评分、肌电信号平均值和步态参数。结果与结论:①两组患者治疗结束后的数字类比表评分、日本骨科协会(JOA)评分、Oswestry功能障碍指数均较治疗前明显改善(P<0.05),试验组治疗结束后的数字类比表评分、JOA评分、Oswestry功能障碍指数均优于对照组(P<0.05);②两组患者治疗结束后的腹直肌、臀大肌、竖脊肌表面肌电平均值均高于治疗前(P<0.05),试验组治疗结束后的腹直肌、臀大肌、竖脊肌表面肌电平均值均高于对照组(P<0.05);③两组患者治疗结束后的步宽、步速、步频、健患侧步长比值、健患侧支撑相比值、患健侧摆动相比值、健患侧髋关节及膝关节矢状面活动度和健患侧足偏角均优于治疗前(P<0.05),试验组治疗结束后的上述指标均优于对照组(P<0.05);④结果表明,生物反馈助力电刺激能明显缓解慢性非特异性腰痛,改善了患者下肢步行功能。

关键词：三维步态生物反馈助力电刺激慢性非特异性腰痛步行功能核心稳定训练

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Recent progress in additive manufacturing of bulk MAX phase components:A review

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Journal of Materials Science & Technology 2022年第36期131卷 30-47页

作者： Qiyang Tan Wyman Zhuang Marco Attia Richard Djugum mingxing zhang School of Mechanical and Mining Engineering The University of QueenslandSt.LuciaQLD 4072Australia Aerospace Division Defence Science and Technology GroupMelbourneVIC 3207Australia

The MAX phases are a group of layered ternary,quaternary,or quinary compounds with characteristics of both metals and *** recent decades,the synthesis of bulk MAX phase parts for wider engineering applications has gained increasing attention in aerospace,nuclear,and defence *** recent adoption of additive manufacturing(AM)technologies in MAX phase fabrication is a step forward in this *** work overviews the recent progress in additive manufacturing(AM)of bulk MAX phases along with the achieved geometric features,microstructures,and properties after briefing the conventional powder sintering methods of fabricating MAX phase *** challenges associated with these innovative AM-based methods,including,poor AM processability,low MAX phase purity,and insufficient geometric accuracy of the final parts,are also ***,outlooks for the immediate future in this area are discussed based on the optimization of present fabrication routes and the potential of other AM technologies.

关键词： MAX phase Binder jetting Direct-ink-writing Sheet lamination Sintering

硬度试验在盾构管片螺栓质量检测中的应用研究

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品牌与标准化 2024年第3期 103-105页

作者：李晓钰张明星江苏省建筑工程质量检测中心有限公司江苏南京210000

本文通过阐述硬度试验的作用,结合硬度试验与抗拉强度试验的对比分析,介绍了硬度试验在地铁建设领域中盾构隧道管片螺栓质量检测方面的应用研究。在建设工程实际应用中,硬度试验可以很好地保障盾构管片螺栓质量检测的真实性和有效性。

关键词：盾构管片质量检测硬度试验