Showing 161 - 180 results of 524 for search '"The Shield"', query time: 0.07s Refine Results
  1. 161

    Automatic GPR detection of grouting defects behind the tunnel shield segments based on wavelet coherence analysis combined with modified Res-RCNN by Dengyi Wang, Ming Peng, Liu Liu, Xiongyao Xie, Zhenming Shi, Yaoying Liang, Jian Shen, Qiyu Wu

    Published 2025-07-01
    “…Ground penetrating radar (GPR), a widely used non-destructive testing technique for detecting grouting defects behind tunnel shield segments, faces challenges like steel rebar interference, low working efficiency, and expert interpretation reliance. …”
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    Article
  2. 162

    Investigation of Gamma Radiation Shielding in NiMnGa-Doped Multifunctional Smart Polymer Composites Using Geant4 and WinXCOM by Mediha Kök, Mustafa Ersin Pekdemir, Seçil Niksarlıoğlu, Serpil Yalçın Kuzu, Mustafa Kaya

    Published 2024-12-01
    “…This study assesses the gamma radiation shielding efficiency of polymer composites doped with varying amounts of alloy, using software to demonstrate the potential application of innovative materials in radiation protection. …”
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    Article
  3. 163

    Optimization progress of large-scale radiation shielding Monte Carlo simulation software based on AIS variance reduction technique system: MCShield by Wu Jiajun, Wu Zhen, Hu Ankang, Hao Yisheng, Pu Yanheng, Zhang Hui, Qiu Rui, Li Junli

    Published 2025-01-01
    “…The development of novel nuclear facilities has brought safer and more efficient energy options but also poses significant challenges for radiation shielding calculations. MCShield, developed by the Radiation Protection and Environmental Protection Laboratory at Tsinghua University, is a Monte Carlo program designed for coupled neutron/photon/electron transport in radiation shielding calculations. …”
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    Article
  4. 164
  5. 165

    Adaptability of the Cutter-Head of the Earth Pressure Balance (EPB) Shield Machine in Water-Rich Sandy and Cobble Strata: A Case Study by Chaodong Wan, Zhiyi Jin

    Published 2020-01-01
    “…Earth Pressure Balance (EPB) shield machines are considered to be the most efficient tunneling method for Metro tunnels due to their adaptability to a great variety of ground conditions, higher construction efficiency, and providing a safer working environment. …”
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    Article
  6. 166

    Risk Assessment System Based on Fuzzy Composite Evaluation and a Backpropagation Neural Network for a Shield Tunnel Crossing under a River by Xiao Liang, Taiyue Qi, Zhiyi Jin, Shaojie Qin, Pengtao Chen

    Published 2020-01-01
    “…This paper studies a risk assessment system for a shield tunnel crossing under a river. Risk identification is performed for the shield tunnel, and the risk factors and indicators are determined. …”
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    Article
  7. 167
  8. 168

    Effect of Shielding Gas on Microstructures and Mechanical Properties of TC4 Titanium Alloy Ultranarrow Gap Welded Joint by Laser Welding with Filler Wire by Naiwen Fang, Erjun Guo, Kai Xu, Ruisheng Huang, Yiming Ma, Caiyou Zeng, Yicheng Yang, Jilin Xie, Hao Cao

    Published 2021-01-01
    “…A 20 mm thick TC4 titanium alloy plate was welded by ultranarrow gap laser welding with filler wire with Ar and He as shielding gas, respectively. A characterization analysis of the microstructures and mechanical properties of the welded joint was conducted with OM, SEM, XRD, and EBSD and through the microhardness test and tensile test. …”
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    Article
  9. 169
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  12. 172

    Experimental Study of the Influence of Excavation Surface Stability and Sand Flowability Caused by Dense Slurry–Earth Pressure Balance Shield Tunneling in Silty Sand Stratum by Yongjin Qian, Fanlu Min, Zhenze Mo, Xihui Fan

    Published 2020-01-01
    “…These results are of great significance to the application and promotion of DS-EPB shields in sandy cobble strata.…”
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    Article
  13. 173

    Phenomenon and Critical Conditions of Chamber Soil Sliming during EPB Shield Tunneling in Water-Rich Weathered Diorite: Case Study of Jinan Metro, China by Lu Wang, Wei Zhu, Yongjin Qian, Chao Xu, Jiannan Hu, Huitang Xing

    Published 2020-01-01
    “…The sliming problem of chamber soil is caused by excessive groundwater seeping into the pressure chamber when an Earth pressure balance shield tunnels through a water-rich weathered rock stratum under semiopen under-pressure mode. …”
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    Article
  14. 174

    Association of Self-Reported Weight Change and Quality of Life, and Exercise and Weight Management Behaviors Among Adults with Type 2 Diabetes Mellitus: The SHIELD Study by Susan Grandy, Kathleen M. Fox, Debbra D. Bazata

    Published 2012-01-01
    “…This study examined the association between self-reported weight change and quality of life, and exercise and weight management behaviors among individuals with type 2 diabetes mellitus (T2DM). Methods. In the US SHIELD study, respondents reported whether they had lost or gained weight compared with 1 year earlier and completed the SHIELD-WQ-9 quality of life questionnaire as well as provided information on their exercise and weight management behaviors in the past 12 months. …”
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  15. 175
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    Shield Equipment Optimization and Construction Control Technology in Water-Rich and Sandy Cobble Stratum: A Case Study of the First Yellow River Metro Tunnel Undercrossing by Fei Ye, Nan Qin, Xiang Gao, Xue-yong Quan, Xian-zhuo Qin, Bing Dai

    Published 2019-01-01
    “…The Lanzhou Yellow River Tunnel is the first metro shield tunnel that undercrosses the Yellow River in China. …”
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    Article
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