Results 1 to 10 of about 20,017 (219)

Rock dynamic strength prediction in cold regions using optimized hybrid algorithmic models

Geomechanics and Geophysics for Geo-Energy and Geo-Resources
Predicting the dynamic mechanical characteristics of rocks during freeze–thaw cycles (FTC) is crucial for comprehending the damage process of FTC and averting disasters in rock engineering in cold climates.
You Lv, Yanjun Shen, Anlin Zhang, Li Ren, Jing Xie, Zetian Zhang, Zhilong Zhang, Lu An, Junlong Sun, Zhiwei Yan, Ou Mi   +10 more
doaj   +1 more source

Effects of high-volume fly ash on the rheological and mechanical properties and crack propagation behavior of aeolian sand cemented backfill

Materials & Design
Using coal fly ash (FA) in aeolian sand cemented backfill diverts industrial waste and reduces Portland cement demand, but high contents may impair fresh-state behavior and early-age structural integrity.
Fei Ke, Yanlong Chen, Guoyu Yang, Yafei Zhang, Jialong Zhang   +4 more
doaj   +1 more source

Redox-mediated decoupled seawater direct splitting for H2 production

Nature Communications
Seawater direct electrolysis (SDE) using renewable energy provides a sustainable pathway to harness abundant oceanic hydrogen resources. However, the side-reaction of the chlorine electro-oxidation reaction (ClOR) severely decreased direct electrolysis ...
Tao Liu, Cheng Lan, Min Tang, Mengxin Li, Yitao Xu, Hangrui Yang, Qingyue Deng, Wenchuan Jiang, Zhiyu Zhao, Yifan Wu, Heping Xie   +10 more
doaj   +1 more source

The Retinex enhancement algorithm for low‐light intensity image based on improved illumination map

IET Image Processing
Taken in low‐light intensity conditions, image with low brightness affects processing precision. In this article, the Gamma Function based on the brightness average and weighted fusion method according to gray entropy is proposed, which is combined with ...
Ruidi Weng, Ya Zhang, Hanyang Wu, Weiyong Wang, Dongyun Wang   +4 more
doaj   +1 more source

Quantitative risk assessment of gas transmission pipelines in mining areas based on risk matrix and cloud model

Journal of Engineering and Applied Science
Risk evolution of gas transmission pipelines in mining areas is characterized by both randomness and fuzziness. Conventional methods fail to realize unified two-dimensional quantification of failure probability and failure consequences, and show poor ...
Linjun Wu, Lei Song, Zhanguo Ma, Yameng He, Jihao Feng, Jianliang Zhang   +5 more
doaj   +1 more source

Research on Rail Damage Detection Based on Improved DETR Algorithm

Applied Sciences
In rail damage detection, the scale variation of small targets leads to inaccurate extraction of damage morphology and size features, thereby affecting the reliable identification of damage types.
Sanxiu Wu, Mengquan Wu, Fengtao Lin, Yang Yang, Rongkai Tan   +4 more
doaj   +1 more source

Load sharing patterns and their key influencing factors for the composite structure of a lined hard rock cavern for compressed air energy storage

Meitian dizhi yu kantan
ObjectiveCompressed air energy storage (CAES) in a lined hard rock cavern holds great prospects. However, the load sharing mechanisms of the cavern’s composite structure, comprising a sealing layer, lining, and surrounding rocks, remain poorly understood.
Lihua HU, Qiming ZHOU, Kai ZHANG, Liyuan YU, Xin LIANG, Qiang SUN, Yun WU, Chengguo HU, Wei LI   +8 more
doaj   +1 more source

Early-Age Hydration Heat in Railway 60-Meter Precast Box Girders: Experimental Study and Experimental Simulation

Buildings
Large precast concrete box girders are susceptible to cracking due to excessive temperature differentials induced by early-age hydration heat, compromising structural reliability and durability. Investigating the early-age hydration heat in large precast
Xu Feng, Yuliang Cai, Fei Wang, Zhongda Lv, Wei Yang, Lei Wang   +5 more
doaj   +1 more source

Tough and tear resistant hydrogel with a sandwich mineralized structure induced by bidirectional ion migration

Nature Communications
Despite the advantages of hydrogels, such as softness and biological affinity, their applications are often severely limited by the inadequate mechanical properties that result from their loose and homogeneous structure.
Dongsheng Yang, Zhiyu Zhao, Liangyu Zhu, Wenbin Tang, Zirou Qiu, Yifan Wu, Wenchuan Jiang, Cheng Lan, Yifu Zhang, Tao Liu, Heping Xie   +10 more
doaj   +1 more source

Intelligent Operation and Maintenance of Wind Turbines Gearboxes via Digital Twin and Multi-Source Data Fusion. [PDF]

Sensors (Basel)
Xu T, Zhang X, Sun W, Wang B.
europepmc   +1 more source