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Seismic response of a mid-story isolated structure considering SSI in mountainous areas under long-period earthquakes

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Earthquake Engineering and Engineering Vibration 2024年第1期23卷 151-161页

作者： Wan Feng Qin Shengwu Liu Dewen Zhao Tiange Zheng Yanping Shan Hang Li Zhiang Peng Fusong Xu Jingran lei min College of Construction Engineering Jilin UniversityChangchun 130015China College of Civil Engineering Southwest Forestry UniversityKunming 650024China College of civil engineering Southwest Jiaotong UniversityChengdu 610031China

At present,there is not much research on mid-story isolated structures in mountainous *** this study,a model of a mid-story isolated structure considering soil-structure interaction(SSI)in mountainous areas is established along with a model that does not consider *** long-period earthquake waves and two ordinary earthquake waves are selected as inputs for the dynamic time history analysis of the *** results show that the seismic response of a mid-story isolated structure considering SSI in mountainous areas can be amplified when compared with a structure that does not consider *** structure response under long-period earthquakes is larger than that of ordinary *** structure response under far-field harmonic-like earthquakes is larger than that of near-fault pulse-type *** structure response under near-fault pulse-type earthquakes is larger than that of far-field non-harmonic *** subjected to long-period earthquakes,the displacement of the isolated bearings exceeded the limit value,which led to instability and overturning of the *** structure with dampers in the isolated story could adequately control the nonlinear response of the structure,effectively reduce the displacement of the isolated bearings,and provide a convenient,efficient and economic method not only for new construction but also to retrofit existing structures.

关键词： SSI in mountainous areas long-period earthquakes mid-story isolated structure structural dynamic analysis

Efficient and selective H_(2)O_(2)production through uranyl-assisted photocatalytic oxygen reduction reaction process in a uranium-organic framework

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Science China Chemistry 2024年第7期67卷 2274-2281页

作者： Jianxin Song Chao Liang Baoyu Li Xuemin Wang min lei Lisha Jiang Zhenyu Li Yugang Zhang Jian Xie Zuju Ma Xing Dai Yanlong Wang Shuao Wang Wei Liu School of Environmental and Materials Engineering Yantai UniversityYantai 264005China 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 School of Life and Environmental Sciences Shaoxing UniversityShaoxing 312000China School of Nuclear Science and Technology Xi’an Jiaotong UniversityXi’an 710049China

Harnessing solar energy by photocatalytically converting oxygen and water into high-value-added H_(2)O_(2)is a promising way of alleviating both environmental and energy *** is worth noting that suppressing detrimental side reactions,such as the generation of·O_(2)^(-),is a critical approach to enhancing H_(2)O_(2)***,a 2-fold interpenetrating 3D uranium-organic framework(YTU-W-1)was developed and introduced for photocatalytic H_(2)O_(2)*** material demonstrates a different photocatalytic mechanism when employing uranyl as an initiator,as compared with the conventional semiconductor photocatalytic pathway involving photo-generated charge *** from the strong hydrogen abstraction effect of the U≡O·and the direct one-step oxygen reduction pathway,YTU-W-1 exhibits enhanced photocatalytic performance for H_(2)O_(2)production with yield efficiency of 221μmol h^(-1)g^(-1).Furthermore,YTU-W-1 displays a high H_(2)O_(2)selectivity of 68%,confirmed by rotating ring-disk electrode(RRDE)*** were used to elucidate the critical role of uranyl in the photocatalytic oxygen reduction reaction for H_(2)O_(2)*** research introduces an innovative approach to photo-driven H_(2)O_(2)production,underscoring the potential for heterogeneous catalysts to engage in photocatalytic reactions independently of photogenerated charge carriers.

关键词： uranyl metal-organic frameworks oxygen reduction reaction photocatalytic H_(2)O_(2)synthesis

Progressive Collapse Resistance of a New Staggered Story Isolated System

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Open Journal of Applied Sciences 2024年第3期14卷 643-659页

作者： Yutong Yang Yuancheng Mi Hong Li Zhongfa Guo Dewen Liu Weiwei Sun min lei College of Civil Engineering Southwest Forestry University Kunming China College of Civil Engineering Rattana Bundit University Bangkok Thailand College of Civil Engineering Southwest Jiaotong University Chengdu China

A new staggered isolated system developed from the mid-story isolated system is the new staggered story isolated system. There are not many studies on this structure currently. In this study, an 18-story new staggered story isolated system model is established using SAP2000. The dynamic nonlinear dynamic alternate method is used to analyze the structure against progressive collapse. Results show that the structure has good resistance to progressive collapse, and there is no progressive collapse under each working condition. The progressive collapse does not occur for the case of removing only one vertical structural member of the new staggered of isolated system. The side column has big influence on this isolated structures’ progressive collapse;the removal of vertical structural member of the isolation layer has less impact on the structure than the removal of the bottom vertical structural member. After the removing of the member, the internal force of the structure will be redistributed, and the axial force of the adjacent columns will change obviously, showing a trend of “near large and far small”.

关键词： The New Staggered Story Isolated System Alternative Load Path Method Collapse Resistance

Shenqi Fuzheng injection alleviates chemotherapy-induced cachexia by restoring glucocorticoid signaling in hypothalamus

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Journal of Pharmaceutical Analysis 2024年第3期14卷 431-434页

作者： Entezar Berik Zijia Zhang Wei Li Yawen Liu Sihan Chen Wenyong Wu Zhaojun Wang Xinqin Kong Wenqiang Pei Huiqing Dong Huali Long min lei Jennifer Yiyang Wang Liangfeng Liu Jinjun Hou Jing Feng Zhaoxia Li Wanying Wu De-an Guo Beijing Key Lab of TCM Collateral Disease Theory Research School of Traditional Chinese MedicineCapital Medical UniversityBeijing100069China National Engineering Research Center of TCM Standardization Technology Shanghai Institute of Materia MedicaChinese Academy of SciencesShanghai201203China University of Chinese Academy of Sciences Beijing100049China School of Chinese Materia Medica Nanjing University of Chinese MedicineNanjing210029China Limin Pharmaceutical Factory Livzon Group LimitedShaoguanGuangdong512028China Guangdong Corporate Key Laboratory of High-End Liquid Medicine R&D IndustrilizationShaoguanGuangdong512028China Center for Neurological and Psychiatric Research and Drug Discovery Shanghai Institute of Materia MedicaChinese Academy of ScienceShanghai201203China

Chemotherapy-induced cachexia(CIC)is a debilitating condition characterized by weight loss,muscle atrophy,and anorexia[1].While peripheral mechanisms of cachexia have been extensively studied,the involvement of the central nervous system(CNS)in CIC is often *** drugs cause stress responses and inflammation,which may impact the hypothalamus and disrupt systemic energy and neuroendocrine *** hypothalamic roles in regulating these processes can provide insights into CIC's mechanisms and aid in developing novel therapies.

关键词： injection drugs glucocorticoid chemotherapy

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跨摄像头多目标跟踪方法综述

计算机学报 2024年第2期47卷 287-309页

作者：张鹏雷为民赵新蕾董力嘉林兆楠景庆阳东北大学计算机科学与工程学院沈阳110167 沈阳二一三电子科技有限公司沈阳110027

单摄像头目标跟踪将目标跟踪范围限定在单一摄像头视野中,难以满足复杂应用场景需求,跨摄像头多目标跟踪融合多个摄像头的信息实现多个摄像头之间的特征传递和轨迹关联,可以将跨摄像头之间的多个目标在多个监控区域下联合跟踪,对现实复... 详细信息

单摄像头目标跟踪将目标跟踪范围限定在单一摄像头视野中,难以满足复杂应用场景需求,跨摄像头多目标跟踪融合多个摄像头的信息实现多个摄像头之间的特征传递和轨迹关联,可以将跨摄像头之间的多个目标在多个监控区域下联合跟踪,对现实复杂场景实时监控具有重要意义,成为目标跟踪领域研究热点.本文介绍了跨摄像头多目标跟踪的基本概念,结合实际应用需求将跟踪模型分为3类:包括重叠视角、非重叠视角以及混合视角的跨摄像头多目标跟踪.详细对比分析了重叠视角跨摄像头多目标跟踪相关的网络流优化方法、单应性约束方法、强化学习方法、超图方法和Transformer方法;以及基于双阶段轨迹关联、单阶段轨迹关联的非重叠视角的跨摄像头多目标跟踪方法;并总结了混合视角的跨摄像头多目标跟踪方法,混合视角方法可以在重叠视角数据集和非重叠视角数据集都能使用并且算法性能和精度都能达到良好的平衡.对比了各类方法的优缺点及其适用场景;分析了目前跨摄像头多目标跟踪常用的数据集和评估标准;总结了跨摄像头多目标跟踪存在的问题,并对相关技术的发展趋势进行了展望.

关键词：跨摄像头多目标跟踪摄像头关联模型重叠视角非重叠视角混合视角

银耳多糖对麦醇溶蛋白纳米体系的影响及复合物的特性研究

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食品与发酵工业 2024年第10期50卷 62-68页

作者：李娜黄霁雯雷敏张朝燕上海海洋大学食品学院上海201306 国家淡水水产品加工技术研发分中心上海201306

该研究是以提高麦醇溶蛋白(gliadin,Gli)纳米颗粒(gliadin nanoparticles,GNPs)稳定性为目标,利用银耳多糖(Tremella fuciformis polysaccharides,TFPs)的乳化性能,探究TFPs添加量对GNPs稳定性的影响。采用反溶剂法制备银耳多糖和麦醇溶蛋白复合载体颗粒(gliadin-Tremella fuciformis polysaccharides composite nanoparticles,G/T NPs),并利用纳米粒度仪、傅里叶变换红外光谱仪、热场发射扫描电镜对G/T NPs的粒径和电位、相互作用、微观结构进行分析。结果表明,TFPs和Gli之间通过静电作用力和氢键作用力相结合,形成GNPs在内、TFPs外层附着的复合颗粒;TFPs的添加能够有效提高GNPs体系的稳定性,减少颗粒之间的聚集,制得的G/T_(4∶1)NPs的平均粒径、多分散指数(polydispersion index,PDI)、ζ-电位分别为(198.5±2.6)nm、0.269±0.005、(36.7±0.6)mV,且具有pH响应性。该研究为后续构建疏水营养成分的包埋和运载体系奠定了基础。

关键词：银耳多糖麦醇溶蛋白反溶剂法复合颗粒热场发射扫描电镜傅里叶变换红外光谱

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黄河流域城市群生态效率评价及归因分析

西北大学学报（自然科学版） 2024年第3期54卷 513-526页

作者：刘虹雷敏杨晨江星月郑清西北大学城市与环境学院陕西西安710127

黄河流域城市群是黄河流域生态保护和高质量发展的重要载体,提高黄河流域城市群生态效率有利于提升其绿色经济发展水平。基于城市群视角,利用超效率SBM模型测度黄河流域七大城市群60个城市2006—2020年的生态效率值,借助Dagum基尼指数... 详细信息

黄河流域城市群是黄河流域生态保护和高质量发展的重要载体,提高黄河流域城市群生态效率有利于提升其绿色经济发展水平。基于城市群视角,利用超效率SBM模型测度黄河流域七大城市群60个城市2006—2020年的生态效率值,借助Dagum基尼指数进行区域差异性分析,进一步通过面板分位数模型识别影响城市群生态效率的主要因素。结果表明:(1)黄河流域地区及各城市群生态效率明显改善,呼包鄂榆城市群和宁夏沿黄城市群生态效率水平最高,而中原城市群和兰西城市群生态效率水平最低;(2)黄河流域生态效率空间分布格局由“低值区抱团分布、高值区离散分布”转变为高值区和低值区“小集聚、大分散”的交叉分布格局;(3)七大城市群总体差异缩小,组间差异和超变密度是总体差异的主要来源;(4)产业结构、人口密度、对外开放水平制约了城市群生态效率的发展,而经济发展水平、技术进步与生态效率呈正相关关系。

关键词：生态效率超效率SBM模型 Dagum基尼指数面板分位数回归黄河流域

党的二十大以来关于人民精神生活共同富裕研究综述

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重庆三峡学院学报 2024年第4期40卷 20-29页

作者：曹均学雷敏西华师范大学马克思主义学院四川南充637002

精神生活共同富裕是共同富裕不可或缺的精神维度。学术界的研究主要集中在实质内涵、逻辑理路、价值意蕴以及实践进路等方面。但研究中仍存在理论阐释不深、问题意识不强、实践路径不聚焦、物质生活与精神生活共同富裕关系研究不深入、... 详细信息

精神生活共同富裕是共同富裕不可或缺的精神维度。学术界的研究主要集中在实质内涵、逻辑理路、价值意蕴以及实践进路等方面。但研究中仍存在理论阐释不深、问题意识不强、实践路径不聚焦、物质生活与精神生活共同富裕关系研究不深入、研究方法受限、多元文化的观察视角不够全面等局限。可通过深入挖掘其科学内涵、强化问题意识、加强实践路径探索、扎实推动物质生活共同富裕和精神生活共同富裕、拓展研究方法等,促进精神生活共同富裕研究接续推进。

关键词：党的二十大精神生活共同富裕研究综述

光伏发电企业运营效率及影响因素研究——基于DEA-Malmquist-Tobit模型的分析

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科技和产业 2024年第4期24卷 192-198页

作者：潘成蓉雷敏四川外国语大学国际工商管理学院重庆400031 四川外国语大学国际金融与贸易学院重庆400031

在“双碳”目标的引领下,科学评价光伏发电企业的运营效率及其影响因素,对促进光伏企业及产业的高质量发展有着重要意义。基于2014—2022年光伏发电上市公司的面板数据,运用DEA-Malmquist-Tobit模型测度了光伏企业的运营效率及其综合效... 详细信息

在“双碳”目标的引领下,科学评价光伏发电企业的运营效率及其影响因素,对促进光伏企业及产业的高质量发展有着重要意义。基于2014—2022年光伏发电上市公司的面板数据,运用DEA-Malmquist-Tobit模型测度了光伏企业的运营效率及其综合效率的动态变化,实证分析了运营效率的主要影响因素。结果表明,9年间光伏发电企业的全要素生产率呈1.8%增长率的小幅增长趋势,股权结构、每股收益等5个变量对光伏发电企业的运营效率有显著性影响。

关键词：光伏发电企业运营效率 DEA模型 Malmquist指数 Tobit模型