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Iron scrap derived nano zero-valent iron/biochar activated persulfate for p-arsanilic acid decontamination with coexisting microplastics

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Journal of Environmental Sciences 2025年第5期151卷 733-746页

作者： zihan Shu Hailan Yang Shujing Ye Hong Li Zhiming Yang Chuang Li Xiaofei Tan Shaobo liu Hou Wang College of Environmental Science and Engineering Hunan University and Key Laboratory of Environmental Biology and Pollution Control(Hunan University)Ministry of EducationChangsha 410082China Shenzhen Research Institute of Hunan University Shenzhen 518055China School of Resources Environment and MaterialsGuangxi UniversityNanning 530004China College of Resources and Environment University of Chinese Academy of SciencesBeijing 101408China School of Architecture and Art Central South UniversityChangsha 410083China School of Metallurgy and Environment Central South UniversityChangsha 410083China

P-arsanilic acid(AA)has received widespread attention because of its conversion to more toxic inorganic arsenic compounds(arsenate and arsenite)in the natural *** removal process and mechanisms with co-existence of microplastics remain *** this study,biochar loaded with nano zero-valent iron(nZVI)particles(ISBC)was prepared by using iron scrap obtained from a steel works and wood chips collected from a wood processing *** advanced oxidation system of sodium persulfate(PDS)activated by ISBC was applied for AA degradation and inorganic arsenic control in aqueous *** than 99%of the AA was completely degraded by the ISBC/PDS system,and the As(III)on AA was almost completely oxidized to As(V)and finally removed by ***_(3)−inhibited the removal of AA by the ISBC/PDS system,while Cl^(−)had a dual effect that showing inhibition at low concentrations yet promotion at high *** effect of microplastics on the degradation of AA by the ISBC/PDS system was further investigated due to the potential for combined microplastic and organic arsenic contamination in rural/remote *** were found to have little effect on AA degradation in the ISBC/PDS system,while affect the transport of inorganic arsenic generated from AA ***,this study provides new insights and methods for efficient removal of p-arsanilic acid from water with coexisting microplastics.

关键词： P-arsanilic acid Biochar Arsenate and arsenite Microplastics

Discussion on the Planning of a Remaining Market in the New Urban Area under the Background of Urbanization: A case study of Xin’an Grand Market of Qingdao

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Journal of Landscape Research 2023年第6期15卷 27-30页

作者： liu zihan LI Daoyong YANG Peizhe North China University of Technology Beijing 100144China

Chinese markets play an important social role in the long history and are important places for currency circulation,human communication and cultural ***,with the acceleration of urbanization,market civilization has gradually *** this study,the current situation of a remaining market in Qingdao Development Zone was surveyed,and the problems of the market were ***,the reasons for the formation and survival of the market were analyzed,and some strategies to transform the market were put forward to find a way out for the development of the same type of markets in China.

关键词： Urbanization Market A new city Xin’an

Design Strategies for Rural Revitalization under the Background of Rural Revitalization:A Case Study of Baimaozhuang Village,Baodi District,Tianjin City

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Journal of Landscape Research 2024年第4期16卷 44-46,50页

作者： SUN Zilin LI Daoyong liu zihan School of Architecture and Art North China University of TechnologyBeijing 100144China

Through the practical design of Baimaozhuang Village in Baodi District of Tianjin City,this paper analyzes the historical,social,and cultural background of the village,sorts out the current construction situation,rural style,and public space usage,and elaborates on the revitalization strategy from the perspectives of planning and architectural *** the perspective of planning and design,it is mainly reflected in road network optimization,landscape improvement,and node *** the perspective of architectural design,it is mainly reflected in building renewal,space revitalization,and style enhancement,with the expectation of building a charming rural area with regional cultural characteristics.

关键词： Rural revitalization Planning and design Building renewal Baimaozhuang Village

基于改进奇异值分解滤波和谱峭度的滚动轴承故障诊断

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中国机械工程 2020年第20期31卷 2420-2428页

作者：孟宗刘子涵吕蒙燕山大学河北省测试计量技术及仪器重点实验室秦皇岛066004

针对含噪信号的有效奇异值个数难以确定的问题,提出了一种改进的奇异值分解降噪方法——奇异值累积法。该方法通过计算奇异值的实际下降值与奇异值平均下降速度累积量的差值,并取该差值最大值点的位置作为有效奇异值的分界点来确定有效... 详细信息

针对含噪信号的有效奇异值个数难以确定的问题,提出了一种改进的奇异值分解降噪方法——奇异值累积法。该方法通过计算奇异值的实际下降值与奇异值平均下降速度累积量的差值,并取该差值最大值点的位置作为有效奇异值的分界点来确定有效奇异值的个数。在此基础上,提出了一种基于奇异值累积法与快速谱峭度的滚动轴承故障诊断方法。采用奇异值累积法对原信号进行降噪处理,然后利用快速谱峭度确定滤波器中心频率及带宽,通过分析频段包络谱中明显的频率成分来诊断故障。该方法可以有效去除信号中的噪声,使得到的峭度值所反映的故障冲击更接近实际情况。对含内圈、外圈故障的滚动轴承实验数据进行分析,实验结果表明,相比快速谱峭度的故障诊断方法,该方法具有更好的故障识别效果。

关键词：滚动轴承故障诊断奇异值分解有效奇异值快速谱峭度

基于深度强化学习的SCR脱硝系统协同控制策略研究

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动力工程学报 2024年第5期44卷 802-809页

作者：赵征刘子涵华北电力大学控制与计算机工程学院河北保定071003

针对选择性催化还原(SCR)脱硝系统大惯性、多扰动等特点,提出了一种基于多维状态信息和分段奖励函数优化的深度确定性策略梯度(DDPG)协同比例积分微分(PID)控制器的控制策略。针对SCR脱硝系统中存在部分可观测马尔可夫决策过程(POMDP),... 详细信息

针对选择性催化还原(SCR)脱硝系统大惯性、多扰动等特点,提出了一种基于多维状态信息和分段奖励函数优化的深度确定性策略梯度(DDPG)协同比例积分微分(PID)控制器的控制策略。针对SCR脱硝系统中存在部分可观测马尔可夫决策过程(POMDP),导致DDPG算法策略学习效率较低的问题,首先设计SCR脱硝系统的多维状态信息;其次,设计SCR脱硝系统的分段奖励函数;最后,设计DDPG-PID协同控制策略,以实现SCR脱硝系统的控制。结果表明:所设计的DDPG-PID协同控制策略提高了DDPG算法的策略学习效率,改善了PID的控制效果,同时具有较强的设定值跟踪能力、抗干扰能力和鲁棒性。

关键词： DDPG 强化学习 SCR脱硝系统协同控制多维状态分段奖励函数

基于多约束条件的果园喷雾机器人路径规划方法

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农业机械学报 2023年第7期54卷 56-67页

作者：沈跃刘子涵刘慧杜伟江苏大学电气信息工程学院镇江212013

果园喷雾机器人路径轨迹规划影响机器人行驶路线的平滑线和行驶过程的可靠性和平稳性。针对目前果园喷雾机器人路径规划中存在的转弯处参考轨迹不够平滑、曲率较大、行驶不平稳等问题,提出了一种基于果园喷雾机器人运动学多约束条件的... 详细信息

果园喷雾机器人路径轨迹规划影响机器人行驶路线的平滑线和行驶过程的可靠性和平稳性。针对目前果园喷雾机器人路径规划中存在的转弯处参考轨迹不够平滑、曲率较大、行驶不平稳等问题,提出了一种基于果园喷雾机器人运动学多约束条件的三次非均匀B样条曲线果园喷雾机器人轨迹优化方法。通过先验地图获取树行位置信息对行间路径点进行拟合处理,保证果园喷雾机器人行驶在树行中心线上符合喷雾作业要求,综合考虑最小转弯半径、首末端点约束、转向机构延迟约束、曲率连续等多约束条件构建路径曲率最小化目标函数,并通过最优化算法求解待优化的曲线参数,生成符合果园喷雾机器人行驶要求的全局路径,最后采用纯跟踪算法进行跟踪试验来验证机器人行驶精度。仿真与试验结果表明,规划生成轨迹的最大曲率为0.31 m^(-1),平均曲率为0.15 m^(-1),符合果园喷雾机器人的行驶要求;针对该轨迹跟踪行驶的平均横向误差为0.225 m,标准差为0.031 m,满足果园喷雾机器人在果园内喷雾作业时对行驶精度的要求。

关键词：果园机器人路径规划三次B样条曲线轨迹优化

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《梼杌闲评》中的运河书写

明清小说研究 2023年第3期 131-139页

作者：刘姿含广西民族大学文学院

《梼杌闲评》是一部成书于明末清初的白话长篇历史小说,以明代宦官魏忠贤的人生轨迹作为故事主线,虚实结合是该小说叙事结构的一大特色。书中有大量关于京杭大运河的描写,其人物活动范围主要在运河沿岸城市,这与作者的生活经历有着密不... 详细信息

《梼杌闲评》是一部成书于明末清初的白话长篇历史小说,以明代宦官魏忠贤的人生轨迹作为故事主线,虚实结合是该小说叙事结构的一大特色。书中有大量关于京杭大运河的描写,其人物活动范围主要在运河沿岸城市,这与作者的生活经历有着密不可分的联系。作者出生在运河沿岸,对运河生活非常熟悉,将自己的人生经历写进了小说。同时,苏北里下河地区的方言特征及扬州兴化一带的乡土民俗风情,在《梼杌闲评》中均有详细生动的描绘,这对于研究运河文化具有重要的文献史料价值。

关键词：《梼杌闲评》运河文化方言特征民俗乡情

Salsolinol as an RNA m~6A methylation inducer mediates dopaminergic neuronal death by regulating YAP1 and autophagy

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Neural Regeneration Research 2025年第3期20卷 887-899页

作者： Jianan Wang Yuanyuan Ran zihan Li Tianyuan Zhao Fangfang Zhang Juan Wang Zongjian liu Xuechai Chen Beijing International Science and Technology Cooperation Base for Antiviral Drugs College of Chemistry and LifeBeijing University of TechnologyBeijingChina Department of Rehabilitation Beijing Rehabilitation HospitalCapital Medical UniversityBeijingChina

Salsolinol(1-methyl-6,7-dihydroxy-1,2,3,4-tetrahydroisoquinoline,Sal)is a catechol isoquinoline that causes neurotoxicity and shares structural similarity with 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine,an environmental toxin that causes Parkinson's ***,the mechanism by which Sal mediates dopaminergic neuronal death remains *** this study,we found that Sal significantly enhanced the global level of N~6-methyladenosine(m~6A)RNA methylation in PC12 cells,mainly by inducing the downregulation of the expression of m~6A demethylases fat mass and obesity-associated protein(FTO)and alk B homolog 5(ALKBH5).RNA sequencing analysis showed that Sal downregulated the Hippo signaling *** m~6A reader YTH domain-containing family protein 2(YTHDF2)promoted the degradation of m~6A-containing Yes-associated protein 1(YAP1)mRNA,which is a downstream key effector in the Hippo signaling ***,downregulation of YAP1 promoted autophagy,indicating that the mutual regulation between YAP1 and autophagy can lead to *** findings reveal the role of Sal on m~6A RNA methylation and suggest that Sal may act as an RNA methylation inducer mediating dopaminergic neuronal death through YAP1 and *** results provide greater insights into the neurotoxic effects of catechol isoquinolines compared with other studies and may be a reference for assessing the involvement of RNA methylation in the pathogenesis of Parkinson's disease.

关键词： ALKBH5 autophagy FTO Hippo pathway m~6A Parkinson's disease RNA methylation salsolinol YAP1 YTHDF2

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体育赛事转播合同中的风险逻辑与因应之策

天津体育学院学报 2024年第2期39卷 204-210页

作者：刘子涵南开大学法学院天津300350

体育赛事转播合同通常履行期限较长且标的额较大。若因外来事件影响合同履行,赛事组织者与转播方出于不同的利益考量,对合同关系应走向何处也存在不同理解,由此引发的纠纷在国内外司法实践中均不鲜见。在性质上,体育赛事转播合同属于合... 详细信息

体育赛事转播合同通常履行期限较长且标的额较大。若因外来事件影响合同履行,赛事组织者与转播方出于不同的利益考量,对合同关系应走向何处也存在不同理解,由此引发的纠纷在国内外司法实践中均不鲜见。在性质上,体育赛事转播合同属于合同内容并不确定的继续性合同,遭遇无法预见的风险系属常态,风险现实化后所造成的合同履行障碍在程度上一般不会达到完全和永久意义上的履行不能。优质体育赛事的稀缺性更导致我国体育赛事转播权销售市场中签订与续约的话语权多掌握在赛事组织者手中,转播方通常会承担更多无法预见的风险。为解决并预防由此产生的纠纷,一方面,当纠纷发生在我国时,需要在事后救济层面妥善适用情事变更规则,矫正合同履行过程中出现的实质不公平;另一方面,由于《民法典》第533条为情事变更规则设置了严格的构成要件,因此我国体育赛事组织者与转播方需要在事先条款安排层面对风险分配条款的制定予以更多关注。在平衡赛事组织者与转播方谈判地位的基础上,赛事组织者、转播方可以通过制定“重大不利变化条款”(MAC条款),寻找合适的风险阀值,合理分配双方当事人无法预见的风险,尽可能实现合同当事人的双赢,推动体育产业发展。

关键词：体育赛事转播合同风险情事变更 MAC条款