Results 91 to 100 of about 46,867 (308)

A Deep Learning-Driven Framework for Real-Time Recognition and Quantification of Subway Tunnel Surface Defects Using High-Resolution Imaging

Urban Rail Transit
Subway tunnels, with their complex underground environment, frequently develop surface defects like cracks and water leakage over time. Traditional manual inspection methods are inadequate for current accuracy and efficiency needs.
Zunchao Ren, Yanyi Liu, Dukun Zhao, Yueji He, Junjie Zhang   +4 more
doaj   +1 more source

A state-of-the-art review on loess tunnels

Journal of Traffic and Transportation Engineering (English ed. Online)
China's loess distribution area covers 640,000 km2, accounting for about 6.6% of its land area and about 4.9% of the world's total loess distribution area.
Jianxun Chen, Yanbin Luo, Yao Li, Shuai Yuan, Jiawei Xu, Jiading Wang, Shengjun Shao, Yasheng Luo, Ling Xu, Xuansheng Cheng, Xiong Qiao, Wenge Qiu, Mingnian Wang, Li Yu, Zhongsheng Tan, Zhanping Song, Qingguo Liang   +16 more
doaj   +1 more source

Design Construction and Performance Test of a Short Length Subsonic Wind Tunnel [PDF]

, 2012
This thesis is submitted to the Department of Mechanical Engineering, Khulna University of Engineering & Technology in partial fulfillment of the requirements for the degree of Master of Science in Mechanical Engineering, Septmber 2012.Cataloged from PDF
Arifuzzaman, Md.
core  

Stepwise On‐Surface Synthesis and Transformations of Two‐Dimensional Covalent Organic Frameworks by Controlled Thermal Stimuli

Advanced Materials, EarlyView.
The seminal transformation of a 2D‐COF (SURFCOF‐IMDEA1) into a 2D porous COF (SURFCOF‐IMDEA2) on Au(111) by a sequential C‐C coupling and ladderization triggered by thermal annealing steps at increasing temperatures is reported. Abstract The development of covalent organic frameworks (COFs) is currently a primary objective in materials science, taking ...
Ana Barragán, Elena Pérez‐Elvira, Diego J. Vicent, Marco Lozano, Diego Soler‐Polo, Koen Lauwaet, José M. Gallego, Rodolfo Miranda, José I. Urgel, Pavel Jelínek, Nazario Martín, David Écija   +11 more
wiley   +1 more source

Numerical Investigation of Heat-Insulating Layers in a Cold Region Tunnel, Taking into Account Airflow and Heat Transfer

Applied Sciences, 2017
In cold regions, heat-insulating layers play a crucial role in frost prevention in tunnels. This paper presents a numerical study on the anti-freezing behavior of a cold region tunnel (the Dege tunnel) with heat-insulating layers. A numerical model based
Qixiang Yan, Binjia Li, Yanyang Zhang, Jian Yan, Chuan Zhang   +4 more
doaj   +1 more source

Kelvin Probe Force Microscopy in Bionanotechnology: Current Advances and Future Perspectives

Advanced Materials, EarlyView.
Kelvin probe force microscopy (KPFM) enables the nanoscale mapping of electrostatic surface potentials. While widely applied in materials science, its use in biological systems remains emerging. This review presents recent advances in KPFM applied to biological samples and provides a critical perspective on current limitations and future directions for
Ehsan Rahimi, Mario Palacios‐Corella, Arjan Mol, Salvador Pané, Josep Puigmartí‐Luis   +4 more
wiley   +1 more source

Research status and new design concept of compressed air energy storage technology in abandoned mine

Meitan kexue jishu
Compressed air energy storage(CAES) can be widely used in power grid peak load shifting and large-scale new energy consumption. It has the advantages of large installed capacity, long service life, and clean environmental protection, and is regarded as ...
Hanpeng WANG, Yunhao WU, Bing ZHANG, Jianguo FAN, Mengtian LI, Jiancai SUI, Wei WANG, Dekang SUN   +7 more
doaj   +1 more source

Tuning Selectivity in CalA Lipase: Beyond Tunnel Engineering. [PDF]

Biochemistry, 2023
Alejaldre L, Lemay-St-Denis C, Pelletier JN, Quaglia D.   +3 more
europepmc   +1 more source

Spin and Charge Control of Topological End States in Chiral Graphene Nanoribbons on a 2D Ferromagnet

Advanced Materials, EarlyView.
Chiral graphene nanoribbons on a ferromagnetic gadolinium‐gold surface alloy display tunable spin and charge states at their termini. Atomic work function variations and exchange fields enabe transitions between singlet, doublet, and triplet configurations.
Leonard Edens, Francisco Romero‐Lara, Trisha Sai, Kalyan Biswas, Manuel Vilas‐Varela, Thomas Frederiksen, Diego Peña, Fabian Schulz, Jose Ignacio Pascual   +8 more
wiley   +1 more source

Study on the Influence Factors of Surrounding Tunnel Longitudinal Deformation Caused by Pit Excavation Based on Nonlinear Pasternak Modeling

Buildings
In practical engineering, it is often necessary to constructed deep pits next to tunnels. So it is crucial to evaluate surrounding tunnels deformation and stress to ensure their safe operation.
Honghua Zhao, Yutao Song
doaj   +1 more source