检索结果-南通市图书馆

同方期刊数据库

浅埋砂土地层盾构带压进舱施工作业开挖面稳定性研究

在线全文

学校读者我要写书评

暂无评论

城市轨道交通研究 2025年第1期28卷 92-96页

作者：葛俊杭州市地铁集团有限责任公司杭州310003

[目的]解决浅埋砂土地层盾构带压进舱施工作业过程中开挖面稳定性问题。[方法]综合采用数值模拟、理论解析和工程验证的方法对盾构带压进舱施工作业过程中的极限支护压力进行研究。首先,采用数值模拟方法对浅埋砂土地层主动破坏现象进... 详细信息

[目的]解决浅埋砂土地层盾构带压进舱施工作业过程中开挖面稳定性问题。[方法]综合采用数值模拟、理论解析和工程验证的方法对盾构带压进舱施工作业过程中的极限支护压力进行研究。首先,采用数值模拟方法对浅埋砂土地层主动破坏现象进行研究,得到了相应的极限支护压力和破坏区形状;然后,基于数值模拟结果,构建了适用于浅埋砂土地层的破坏模式,并求解了相应的极限支护压力;最后,将本模型应用于杭州地铁5号线工程的盾构带压进舱施工作业,并对地面沉降情况进行了监测。[结果及结论]极限支护压力随着埋深的增大近似线性增大,随着内摩擦角的增大近似指数形式减小;失稳模式浅埋砂土地层呈现下部楔形体和上部倒圆台的形状,其中上部破坏区进一步分为破坏核心区和扰动区;通过与数值模型、文献模型对比发现,所提出的楔形体+倒圆台组合破坏模式能较好地描述因浅埋砂土地层无法成拱而导致破坏区可达地面的现象;杭州地铁5号线工程盾构带压进舱施工作业过程中,引起地面最大沉降值为9.5 mm,影响范围为隧道轴线两侧10 m范围内。

关键词：地铁浅埋隧道砂土地层盾构带压进舱开挖面稳定性极限平衡法

Advancements in Passive Wireless Sensing Systems in Monitoring Harsh Environment and Healthcare Applications

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2025年第5期17卷 145-192页

作者： Wei Yue Yunjian Guo Jong‐Chul Lee Enkhzaya Ganbold Jia-Kang Wu Yang Li Cong Wang Hyun Soo Kim Young-Kee Shin jun-ge Liang Eun-Seong Kim Nam-Young Kim RFIC Bio Centre Kwangwoon UniversitySeoul 01897South Korea Department of Electronic Convergence Engineering Kwangwoon UniversitySeoul 01897South Korea Department of Electronic Engineering Jiangnan UniversityWuxi 214122People’s Republic of China School of Microelectronics Shandong UniversityJinan 250101People’s Republic of China School of Electronics and Information Engineering Harbin Institute of TechnologyHarbin 150001People’s Republic of China Department of Electronics Engineering Kwangwoon UniversitySeoul 01897South Korea Laboratory of Molecular Pathology and Cancer genomics Department of Molecular Medicine and Biopharmaceutical SciencesGraduate School of Convergence Science and TechnologySeoul National UniversitySeoul 08826South Korea

Recent advancements in passive wireless sensor technology have significantly extended the application scope of sensing,particularly in challenging environments for monitoring industry and healthcare *** systems are equipped with battery-free operation,wireless connectivity,and are designed to be both miniaturized and *** features enable the safe,real-time monitoring of industrial environments and support high-precision physiological measurements in confined internal body spaces and on wearable epidermal *** the exploration into diverse application environments,the development of a systematic and comprehensive research framework for system architecture remains elusive,which hampers further optimization of these *** review,therefore,begins with an examination of application scenarios,progresses to evaluate current system architectures,and discusses the function of each component—specifically,the passive sensor module,the wireless communication model,and the readout module—within the context of key implementations in target sensing ***,we present case studies that demonstrate the feasibility of proposed classified components for sensing scenarios,derived from this systematic *** outlining a research trajectory for the application of passive wireless systems in sensing technologies,this paper aims to establish a foundation for more advanced,user-friendly applications.

关键词： Wireless sensing Passive detection Harsh environment Biomedical monitoring Flexible sensors

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

湍流场高分辨重构的时程深度学习方法

船舶力学 2025年第1期29卷 1-11页

作者：战庆亮白春锦葛耀君大连海事大学交通运输工程学院辽宁大连116026 同济大学桥梁结构抗风技术交通行业重点实验室上海200092

湍流的研究离不开高分辨率的流场数据,但受测量方法、计算效率和数据存储等多方面限制,高分辨率湍流数据的直接获取仍比较困难。本文基于流场时程数据的低维表征模型,提出基于神经网络的特征编码预测模型与高分辨率的湍流重构方法。首先... 详细信息

湍流的研究离不开高分辨率的流场数据,但受测量方法、计算效率和数据存储等多方面限制,高分辨率湍流数据的直接获取仍比较困难。本文基于流场时程数据的低维表征模型,提出基于神经网络的特征编码预测模型与高分辨率的湍流重构方法。首先,基于一维卷积方法建立湍流时程的低维表征模型;然后,基于人工神经网络模型建立测点坐标与特征编码之间的映射关系,实现未知测点的特征编码预测;最后,利用所预测的特征编码结合表征模型的解码器生成求解域内任意位置处的湍流时程。对Re=2.2×10^(4)的方柱湍流场进行低维表征,进而实现高分辨率流场时程数据的重构,并验证方法的准确性。本文所提方法是一种在时间维度上具有高精度的湍流重构方法,且是一种无监督训练方法,可广泛应用于基于一点的传感器数据处理,是一种适用于湍流流场时程数据重构的新方法。

关键词：湍流重构湍流流场时程深度学习特征提取无监督模型

基于材料应变的新型装配式剪力墙变形指标限值

在线全文

学校读者我要写书评

暂无评论

哈尔滨工业大学学报 2025年第2期57卷 104-112页

作者：樊禹江陈玉喜李寰芳许锦宝葛俊长安大学建筑学院西安710061 长安大学建筑工程学院西安710061

为研究新型装配式剪力墙的抗震性能及其变形指标限值,基于课题组所做新型装配式剪力墙抗震性能试验,采用析因法,共设计216个不同剪跨比、轴压比、边缘构件纵筋配筋率等新型装配式剪力墙模型,完成相应的单推性能研究;基于有限元破坏形态... 详细信息

为研究新型装配式剪力墙的抗震性能及其变形指标限值,基于课题组所做新型装配式剪力墙抗震性能试验,采用析因法,共设计216个不同剪跨比、轴压比、边缘构件纵筋配筋率等新型装配式剪力墙模型,完成相应的单推性能研究;基于有限元破坏形态识别,将构件破坏形态划分为弯曲破坏、弯剪破坏和剪切破坏3类,提出墙体破坏形态划分准则。参考GB 50011—2010《建筑抗震设计规范》,对弯曲破坏和弯剪破坏划分6个性能状态,对剪切破坏划分两个性能状态,基于构件极限状态下混凝土、钢筋应变和承载力,确定墙体性能状态判定准则。通过线性回归分别得到弯曲破坏、弯剪破坏和剪切破坏形态下构件各塑性位移角限值的回归方程,并提出各破坏形态下具有90%保证率的构件变形指标限值标准,为基于性能的新型装配式剪力墙抗震设计提供参考。

关键词：钢筋混凝土装配式剪力墙有限元模拟破坏形态变形指标限值

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

基于BSC的高校绩效评价指标体系构建探究

江苏科技信息 2025年第2期42卷 59-64页

作者：吴楠葛军金陵科技学院江苏南京211199

随着高等教育的不断发展以及国家资金投入的持续增加,高校在提升办学条件和教育质量方面获得了更多资源。然而,当前高校资源分配不均、发展水平参差不齐等问题,成为阻碍教育高质量发展的重要因素。将高校资源的分配与其战略发展相结合,... 详细信息

随着高等教育的不断发展以及国家资金投入的持续增加,高校在提升办学条件和教育质量方面获得了更多资源。然而,当前高校资源分配不均、发展水平参差不齐等问题,成为阻碍教育高质量发展的重要因素。将高校资源的分配与其战略发展相结合,能够确保资源投向最需要的领域,从而优化整体资源配置。文章基于平衡计分卡框架,构建与高校战略匹配的科学绩效评价指标体系,从内部控制、财务绩效、服务对象、学习与成长4个维度入手,运用层次分析法确定权重,结合综合评分和等级考核的方法,以期为高校绩效评价和管理决策提供依据。

关键词：平衡计分卡绩效评价层次分析法高等院校

Diagnosis and surgical challenges of extremely severe head and lumbar disc herniation in young patients:A case report

在线全文

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2025年第16期13卷 67-75页

作者： jun-ge Zhou Department of Neurosurgery General Hospital of The Yangtze River ShippingWuhan Brain HospitalWuhan 430010Hubei ProvinceChina

BACKGROUND Lumbar disc extrusion,a common spinal disorder,is particularly uncommon in its severely displaced form,especially in young *** condition can pose diagnostic challenges due to its nonspecific *** SUMMARY A 36-year-old male patient presented with persistent low back pain and radiating leg pain lasting half a month,which had worsened over the previous four *** magnetic resonance imaging scans showed an abnormal signal within the vertebral canal at the L3 level,suggesting either a disc cyst or an epidural *** on these findings,the patient was provisionally diagnosed with either *** exploration was conducted,revealing an extruded lumbar disc,which was subsequently *** surgery,the patient's symptoms completely *** High-grade lumbar disc extrusion in young patients is rare but should be considered in sedentary,physically inactive individuals presenting with lumbocrural pain and abnormal magnetic resonance imaging *** and accurate diagnosis is crucial to avoid misdiagnosis,and prompt open surgery may be necessary in severe cases to alleviate *** case highlights the impotance of a thorough diagnostic workup and timely surgical intervention in managing such rare but potentially severe spinal disorders.

关键词： Lumbar disc extrusion Cephalad Open surgery Clinical implications Diagnostic assessment Case report

Diffusion process in enzyme-metal hybrid catalysts

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Chemical Science and Engineering 2022年第6期16卷 921-929页

作者： Shitong Cui jun ge Key Lab for Industrial Biocatalysis Ministry of EducationDepartment of Chemical EngineeringTsinghua UniversityBeijing 100084China Institute of Biopharmaceutical and Health Engineering Tsinghua Shenzhen International Graduate SchoolShenzhen 518055China

Enzyme-metal hybrid catalysts bridge the gap between enzymatic and heterogeneous catalysis,which is significant for expanding biocatalysis to a broader *** studies have demonstrated that the enzyme-metal hybrid catalysts exhibited considerably higher catalytic efficiency in cascade reactions,compared with that of the combination of separated enzyme and metal ***,the precise mechanism of this phenomenon remains ***,we investigated the diffusion process in enzyme-metal hybrid catalysts using Pd/lipase-Pluronic conjugates and the combination of immobilized lipase(Novozyme 435)and Pd/C as *** reference to experimental data in previous studies,the Weisz-Prater parameter and efficiency factor of internal diffusion were calculated to evaluate the internal diffusion limitations in these ***,a kinetic model was developed and fitted to describe the proximity effect in hybrid *** indicated that the enhanced catalytic efficiency of hybrid catalysts may arise from the decreased internal diffusion limitation,size effect of Pd clusters and proximity of the enzyme and metal active sites,which provides a theoretical foundation for the rational design of enzyme-metal hybrid catalysts.

关键词： enzyme-metal hybrid catalyst internal diffusion proximity effect kinetic model

同方期刊数据库

Enzyme-metal nanocomposites for antibacterial applications

在线全文

学校读者我要写书评

暂无评论

Particuology 2022年第5期20卷 134-139页

作者： Jiarong Xiong Xinyi cai jun ge Key Lab for Industrial Biocatalysis Ministry of EducationDepartment of Chemical EngineeringTsinghua UniversityBeijing 100084China Institute of Biopharmaceutical and Health Engineering Tsinghua Shenzhen International Graduate SchoolShenzhen 518055China

Metal nanoparticles have been used as antibacterial agents widely,and the combined use of enzymes and metal nanoparticles promotes antibacterial activity,achieving a synergistic ***,enzymes decrease the amounts of metals and increase biocompatibility,thereby reducing toxicity of ***,the efficiency of enzymes is hindered when coupled with metals,which causes deactivation in the function of *** can a balance be struck between metals and enzymes?Although the antibacterial mechanism of metal nanoparticles is relatively clear,how enzyme-metal nanocomposites work against bacteria is not ***,we describe several examples on the synthesis of enzyme-metal nanocomposites via co-immobilization or in situ reduction and summarize how enzyme-metal nanocomposites combat microorganisms.

关键词： Enzyme-metal nanocomposites Applications Preparations Antibacterial mechanisms

马克思世界历史理论与人类命运共同体——基于《德意志意识形态》的文本分析

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

天水行政学院学报(哲学社会科学版) 2025年第1期26卷 75-80页

作者：彭舸珺张晶兰州大学马克思主义学院甘肃兰州730000

《德意志意识形态》蕴含着马克思对于唯物主义历史观的宏伟构建,阐释了人类社会发展的一般规律,将世界历史理论放置于唯物史观这一“新世界观”的视域之中,建构了基于资本主义工业文明、科技与生产力的普遍发展以及交往理论在内的马克... 详细信息

《德意志意识形态》蕴含着马克思对于唯物主义历史观的宏伟构建,阐释了人类社会发展的一般规律,将世界历史理论放置于唯物史观这一“新世界观”的视域之中,建构了基于资本主义工业文明、科技与生产力的普遍发展以及交往理论在内的马克思世界历史理论的丰富内涵。当今世界正经历百年未有之大变局,人类命运共同体理念与马克思的世界历史理论放置于当今时代具有共同的时代价值目标,为解决全球问题提供了中国智慧,传承着马克思主义世界历史理论的哲学思维逻辑。《德意志意识形态》内蕴的世界历史理论与人类命运共同体理念有着实践共通,从“现实的人”到“人民逻辑”的发展、共产主义远大理想目标的历史对望、全世界无产者的联合与新型合作伙伴的构建,彰显着马克思主义世界历史理论与人类命运共同体理念的古今传承。

关键词：《德意志意识形态》世界历史理论人类命运共同体