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大型预应力雨棚拆除及邻跨结构加固技术

施工技术（中英文） 2022年第3期51卷 85-87,93页

作者：孟炜航佀同辉薛玉峰谢景华刘学洋中建铁路投资建设集团有限公司黑龙江哈尔滨150070

结合哈尔滨太平国际机场T2航站楼项目,对大型预应力雨棚拆除及邻跨结构加固技术进行研究,对雨棚结构卸载、原T1航站楼结构加固、雨棚楼板拆除、雨棚次梁拆除、雨棚主梁拆除等进行详细叙述。在预应力雨棚拆除过程中,为保证既有建筑结构安... 详细信息

结合哈尔滨太平国际机场T2航站楼项目,对大型预应力雨棚拆除及邻跨结构加固技术进行研究,对雨棚结构卸载、原T1航站楼结构加固、雨棚楼板拆除、雨棚次梁拆除、雨棚主梁拆除等进行详细叙述。在预应力雨棚拆除过程中,为保证既有建筑结构安全,优先对临跨结构进行粘钢加固,并使用液压绳锯、液压墙锯等设备进行拆除。相比使用风镐、电镐等设备进行拆除,本研究提出的加固技术可加快施工进度,提高施工安全性,降低现场粉尘、噪声污染,取得良好施工效果。

关键词：航站楼预应力混凝土粘钢法加固施工技术

多批次预制的内河沉管隧道干坞坞口封闭方案研究

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特种结构 2024年第4期41卷 101-108页

作者：黄雪阳刘力英杨春山汪传智广州市市政工程设计研究总院有限公司

为优化多批次预制的内河沉管隧道干坞坞口封闭方案,以广州某典型软土地基中的沉管隧道干坞工程为背景,提出一种半重力式坞门墩+钢坞门的坞口封闭方案,并将其与围堰方案进行了经济合理性比较。通过建立三维有限元模型,分析地连墙接头类... 详细信息

为优化多批次预制的内河沉管隧道干坞坞口封闭方案,以广州某典型软土地基中的沉管隧道干坞工程为背景,提出一种半重力式坞门墩+钢坞门的坞口封闭方案,并将其与围堰方案进行了经济合理性比较。通过建立三维有限元模型,分析地连墙接头类型、墙体厚度、坞门墩平面长度等敏感性因素,揭示了格构式地连墙坞门墩的受力机制。研究结果表明:对于多批次预制的内河沉管隧道,半重力式坞门墩+钢坞门坞口封闭方案的造价比围堰方案降低20%以上,且缩短了半年以上的工期;坞门墩格构式地连墙呈现以水平向受力为主的双向板受力特征;刚性接头坞门墩整体性好,柔性接头坞门墩在墙顶盖板的约束下也具有较好的整体性,但二者的位移、弯矩大小和形状均存在差异;随着墙体厚度的增加,墙体的位移减小,弯矩增大;随着坞门墩平面长度的增加,墙体的位移减小,弯矩减小。

关键词：沉管隧道干坞坞口封闭坞门墩受力机制

基于层次分析法和双目标规划的应急物资供应链优化

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物流技术 2023年第1期42卷 107-114页

作者：吴泽玉刘建桥杨丹刘雪阳蒋建军席钌姿洪欢康翔豪湖南工学院安全与管理工程学院湖南衡阳421002 湖南工学院人因与安全工程研究院湖南衡阳421002

以突发事件中应急物资供应链作为研究对象,从供应链供需风险的视角出发,采用层次分析法从供应端与需求端两个主体分析应急物资供应链存在的供需风险因素。在此基础上,以客户满意度最高和供应链总收益最大为目标建立双目标优化模型。基... 详细信息

以突发事件中应急物资供应链作为研究对象,从供应链供需风险的视角出发,采用层次分析法从供应端与需求端两个主体分析应急物资供应链存在的供需风险因素。在此基础上,以客户满意度最高和供应链总收益最大为目标建立双目标优化模型。基于层次分析法的结果,以客户需求量、运输时间最短及两者综合来制定三种配送方案,分析结果显示:当供应链客户整体满意度最高时其总收益达到最大化,据此可通过提高客户满意度实现供应链网络风险规避问题,达到整体优化效果。本研究的结论适用于突发事件下应急物资供应链的优化问题。

关键词：应急物资供应链供应链优化层次分析法双目标优化模型

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基于Apriori和MIE算法分析关节炎中药制剂用药规律及核心药对的潜在作用机制

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中草药 2024年第9期55卷 3027-3040页

作者：翟桐杜佳璐任雪阳孙梦豫黎明霞刘薇和映玉李仙仙邓清月折改梅北京中医药大学中药学院北京100029

目的基于Apriori和MIE算法分析并总结《中国药典》2020年版中关节炎成方和单味制剂的用药规律。方法检索《中国药典》2020年版一部中治疗关节炎的成方制剂和单味制剂的信息。运用WPS Office Excel软件建立数据库,应用IBM SPSS Modeler 1... 详细信息

目的基于Apriori和MIE算法分析并总结《中国药典》2020年版中关节炎成方和单味制剂的用药规律。方法检索《中国药典》2020年版一部中治疗关节炎的成方制剂和单味制剂的信息。运用WPS Office Excel软件建立数据库,应用IBM SPSS Modeler 18.0软件中Apriori算法、MIE算法和Cytoscape 3.9.1进行关联规则分析、药对相关性分析等。选取MIE分析和关联规则分析中置信度和支持度相对较高的核心药物,进行基因本体(gene ontology,GO)功能富集和京都基因与基因组百科全书(Kyoto encyclopedia of genes and genomes,KEGG)通路富集分析,并进行成分-靶点-通路分析。结果共收集102个成方制剂和8个单味制剂,涉及中药271味,包含毒性中药42味,依频次高低排序前6的中药为当归、红花、乳香、没药、防风和独活。功效以祛风湿、补虚、活血化瘀为主,归经以肝经、脾经和肾经为主,四气以温为主,五味以辛为主。其中大毒中药6味,小毒中药19味,有毒中药17味,依频次高低排序前4的毒性中药为制川乌、制草乌、马钱子、樟脑。关联规则分析得到“没药-乳香”“乳香-没药-当归”等配伍最常见。MIE分析得到“党参-白芍”“狗脊-淫羊藿”等强相关潜在药对。其中,MIE分析和关联规则中支持度与置信度较高的药对为“当归-川芎”,药组为“当归-川芎-白芷”。网络药理学分析显示主要潜在活性成分为β-谷甾醇、豆甾醇、杨梅酮、阿魏酸等,核心靶点为PTGS2、HSP90AB1、CASP3、Bcl2、PTGS1、Bax等,主要涉及包含癌症相关通路、花生四烯酸代谢通路、亚油酸通路等。集群分析成方制剂以治疗风寒湿痹症为主。结论关节炎为正虚邪实证,治疗应以扶正驱邪、宣通脏腑、调达经络为主。毒性中药使用较多且用量较大,可增强疗效,但应该严格控制用量,防止中毒现象的发生。核心药对“当归-川芎”、核心药组“当归-川芎-白芷”的活性成分能够通过多种途径作用于多靶点防治关节炎。

关键词：关节炎数据挖掘用药规律毒性中药 MIE 网络药理学当归-川芎当归-川芎-白芷

All-metallic metasurfaces towards high-performance magneto-plasmonic sensing devices

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Photonics Research 2020年第11期8卷 1742-1748页

作者： Lixia Li xueyang Zong Yufang liu Henan Key Laboratory of Infrared Materials&Spectrum Measures and Applications School of PhysicsHenan Normal UniversityXinxiang 453007China

Magneto-plasmonic sensors based on surface plasmon resonance have been studied considerably in recent years,as they feature high sensitivity and ultrahigh ***,the majority of such investigations focus on prism-based sandwich architectures that not only impede the miniaturization of devices but also have a weak transverse magneto-optical Kerr effect(TMOKE)in ***,we theoretically demonstrate a magneto-plasmonic sensor composed of Au/Co bilayer nanodisk arrays on top of optically thick metallic films,which supports a narrow surface plasmon resonance(SPR)with a bandwidth of 7 nm and allows for refractive index sensitivities as high as 717 nm/*** to the high-quality SPR mode,a Fano-like TMOKE spectrum with a subnanometer bandwidth can be achieved in the proposed structure,thereby giving rise to ultrahigh sensing of merit values as large as 7000 in ***,we demonstrate a large TMOKE magnitude that exceeds *** value is 1 order of magnitude larger than that of magneto-plasmonic sensors *** also demonstrate that the behavior of TMOKE spectra can be controlled by tuning the geometrical parameters of the device including the diameter and thickness of nanodisk *** work provides a promising route for designing magneto-plasmonic sensors based on metasurfaces or metamaterials.

关键词： metallic magneto thereby

Dynamics of ionisation wave propagation in an applied external electric field

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High Voltage 2016年第2期1卷 90-94页

作者： Yang Xia Dongping liu Hamidreza Ghomi Wenchun Wang Zhenhua Bi Longfei Ji xueyang Wang Zhihua Qi Bin Li Liaoning Key Laboratory of Optoelectronic Films and Materials School of Physics and Materials EngineeringDalian Nationalities UniversityDalian 116600People’s Republic of China School of Physics and Optoelectronic Technology Dalian University of TechnologyDalian 116024People’s Republic of China Laser and Plasma Research Institute Shahid Beheshti UniversityEvinTehran ***Iran Beijing Guangyao Energy Technology Co. LtdBeijing 100015People’s Republic of China

This study presents spatio-temporal development of the ionisation waves(IWs)along one dielectric tube with an extra alternating electric field.A pulsed direct current power supply is used for generating the IWs,and another alternating current power supply is used for altering the distribution of electric fields along the dielectric *** measurements show that the propagation velocity and density of IWs are strongly affected by the external electric *** direct relation between external electric field and the velocity of the IWs is *** analysis indicates that the external electric field can be utilised to control the propagation of the IWs,resulting in a change of their density and velocity.

关键词： field. propagation dielectric

Artificial intelligence-based comprehensive analysis of immune-stemness-tumor budding profile to predict survival of patients with pancreatic adenocarcinoma

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Cancer Biology & Medicine 2023年第3期20卷 196-217页

作者： Tianxing Zhou Quan Man xueyang Li Yongjie Xie Xupeng Hou Hailong Wang Jingrui Yan Xueqing Wei Weiwei Bai Ziyun liu Jing liu Jihui Hao Department of Pancreatic Cancer Tianjin Medical University Cancer Institute&HospitalNational Clinical Research Center for CancerKey Laboratory of Cancer Prevention and TherapyTianjinTianjin's Clinical Research Center for CancerTianjin 300060China Department of Hepatopancreatobiliary Surgery Tongliao City HospitalTongliao 028000China Department of Breast Oncoplastic Surgery Tianjin Medical University Cancer Institute&HospitalNational Clinical Research Center for CancerKey Laboratory of Cancer Prevention and TherapyTianjinTianjin's Clinical Research Center for CancerKey Laboratory of Breast Cancer Prevention and TherapyTianjin Medical UniversityMinistry of EducationTianjin 300060China Department of Cancer Cell Biology Tianjin Medical University Cancer Institute&HospitalNational Clinical Research Center for CancerKey Laboratory of Cancer Prevention and TherapyTianjinTianjin's Clinical Research Center for CancerKey Laboratory of Breast Cancer Prevention and TherapyTianjin Medical UniversityMinistry of EducationTianjin 300060China Department of Diagnostic and Therapeutic Ultrasonography Tianjin Medical University Cancer Institute&HospitalNational Clinical Research Center for CancerKey Laboratory of Cancer Prevention and TherapyTianjinTianjin's Clinical Research Center for CancerKey Laboratory of Breast Cancer Prevention and TherapyTianjin Medical UniversityMinistry of EducationTianjin 300060China

Objective:Pancreatic ductal adenocarcinoma(PDAC)is an aggressive ***8^(+)T cells,cancer stem cells(CSCs),and tumor budding(TB)have been significantly correlated with the outcome of patients with PDAC,but the correlations have been independently *** addition,no integrated immune-CSC-TB profile for predicting survival in patients with PDAC has been ***:Multiplexed immunofluorescence and artificial intelligence(AI)-based comprehensive analyses were used for quantification and spatial distribution analysis of CD8^(+)T cells,CD133^(+)CSCs,and *** vivo humanized patient-derived xenograft(PDX)models were *** analysis,calibration curve,time-dependent receiver operating characteristic curve,and decision curve analyses were performed using R ***:The established‘anti-/pro-tumor’models showed that the CD8^(+)T cell/TB,CD8^(+)T cell/CD133^(+)CSC,TB-adjacent CD8^(+)T cell,and CD133^(+)CSC-adjacent CD8^(+)T cell indices were positively associated with survival of patients with *** findings were validated using PDX-transplanted humanized mouse *** integrated nomogram-based immune-CSC-TB profile that included the CD8^(+)T cell/TB and CD8^(+)T cell/CD133^(+)CSC indices was established and shown to be superior to the tumor-nodemetastasis stage model in predicting survival of patients with ***:‘Anti-/pro-tumor’models and the spatial relationship among CD8^(+)T cells,CSCs,and TB within the tumor microenvironment were *** strategies to predict the prognosis of patients with PDAC were established using AI-based comprehensive analysis and machine learning *** nomogram-based immune-CSC-TB profile can provide accurate prognosis prediction for patients with PDAC.

关键词： Artificial intelligence CD8 CSCs tumor budding PDAC nomogram

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叶面喷施锌肥对小豆产量及籽粒锌含量的影响

黑龙江农业科学 2024年第7期 18-23页

作者：李琬王雪扬卢环刘淼王晨高嫱孟宪欣尹振功黑龙江省农业科学院耕作栽培研究所黑龙江哈尔滨150023 黑龙江省农业科学院黑龙江哈尔滨150086

为促进黑龙江省小豆产业提质增效,以龙红豆4号和冀红352为试验材料,分别于2022和2023年进行硫酸锌施用浓度和施用次数效果试验。2022年,设置5个ZnSO4浓度(质量百分数为0%,0.1%,0.2%,0.3%和0.4%),在结荚期进行叶面喷施处理,研究其对小豆... 详细信息

为促进黑龙江省小豆产业提质增效,以龙红豆4号和冀红352为试验材料,分别于2022和2023年进行硫酸锌施用浓度和施用次数效果试验。2022年,设置5个ZnSO4浓度(质量百分数为0%,0.1%,0.2%,0.3%和0.4%),在结荚期进行叶面喷施处理,研究其对小豆产量因子及籽粒锌含量的影响,并筛选出最佳施用浓度(0.3%)。2023年,在结荚初期、结荚中期、结荚初期+结荚中期,进行叶面喷施0.3%的ZnSO4筛选出最佳喷施次数。2年研究结果表明,喷施外源ZnSO4可提高小豆单株有效荚数、单株粒重和百粒重。喷施0.3%的硫酸锌最为适宜,能有效提高小豆百粒重和籽粒锌含量,分别较CK提高6.68%~9.97%和16.17%~25.33%;在结荚初期+结荚中期叶面喷施2次浓度为0.3%的外源ZnSO4可显著提高小豆籽粒锌含量,龙红豆4号和冀红352较对照分别提高33.33%和48.16%,喷施2次与喷施1次相比,显著提高了冀红352的单株产量。

关键词：小豆外源锌产量籽粒锌含量

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A significant carbon sink in temperate forests in Beijing: based on 20-year field measurements in three stands

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Science China(Life Sciences) 2015年第11期58卷 1135-1141页

作者： ZHU JianXiao HU xueyang YAO Hui liu GuoHua JI ChenJun FANG JingYun Department of Ecology College of Urban and Environmental Science and Key Laboratory for Earth Surface Processes of the Ministry of Education Peking University Research Center for Eco-Environmental Sciences Chinese Academy of Sciences

Numerous efforts have been made to characterize forest carbon （C） cycles and stocks in various ecosystems. However, long-term observation on each component of the forest C cycle is still lacking. We measured C stocks and fluxes in three per- manent temperate forest plots （birch, oak and pine forest） during 2011-2014, and calculated the changes of the components of the C cycle related to the measurements during 1992-1994 at Mr. Dongling, Beijing, China. Forest net primary production in birch, oak, and pine plots was 5.32, 4.53, and 6.73 Mg C ha-1 a-1, respectively. Corresponding net ecosystem production was 0.12, 0.43, and 3.53 Mg C ha-1 a-1. The C stocks and fluxes in 2011-2014 were significantly larger than those in 1992-1994 in which the biomass C densities in birch, oak, and pine plots increased from 50.0, 37.7, and 54.0 Mg C ha-1 in 1994 to 101.5, 77.3, and 110.9 Mg C ha a in 2014; soil organic C densities increased from 207.0, 239.1, and 231.7 Mg C ha-1 to 214.8, 241.7, and 238.4 Mg C ha-l; and soil heterotrophic respiration increased from 2.78, 3.49, and 1.81 Mg C ha-1 a-1 to 5.20, 4.10, and 3.20 Mg C ha-1 a-l. These results suggest that the mountainous temperate forest ecosystems in Beijing have served as a carbon sink in the last two decades. These observations of C stocks and fluxes provided field-based data for a long-term study of C cycling in temperate forest ecosystems.

关键词： carbon density carbon flux carbon cycle carbon budget permanent plot temperate forest

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