Results 61 to 70 of about 3,889 (269)

Evolution characteristics and development height prediction method of water-conducting crack zone in thick weak cemented overlying strata

Meitan kexue jishu
The development height of water-conducting fracture zone in thick weakly cemented strata is of great significance to coal production safety and groundwater resource protection in Shaanxi-Inner Mongolia weakly cemented mining area.
Huaizhan LI, Jingchao SUN, Guangli GUO, Chao TANG, Hui ZHENG, Liangui ZHANG, Fanzhen MENG   +6 more
doaj   +1 more source

Experimental Characterization and Constitutive Modeling of the Effect of Prior Inelastic Strain on the Viscoplastic Behavior of AD730 at 700 °C

Advanced Engineering Materials, EarlyView.
This study shows that superalloys used in aircraft engine disks become much more prone to deformation at high temperatures if they have been strained during manufacturing. This effect increases with the level of prior strain but eventually reaches a limit.
Fabio Machado Alves da Fonseca, Patrick Villechaise, Malik Durand, Arnaud Longuet, Florent Coudon, Loïc Signor, Julien De Jaeger, Dominique Eyidi, Nathalie Bozzolo, Jonathan Cormier   +9 more
wiley   +1 more source

High-precision determination of heights of key strata and water-conducting fractured zone based on full-stratigraphy theory

Meitan kexue jishu
The accurate prediction of the height of the water-conducting fracture zone is a critical issue in coal mine water hazard prevention and safe production, with its precision directly impacting water resource protection and mining safety in mining areas ...
Lujun WANG, Weibing ZHU, Yong ZHANG, Suo ZHANG, Shan NING, Jinfeng JU, Zhu LI   +6 more
doaj   +1 more source

A Novel Modified Petroresin Particle (MPRP) With Enhanced Oil–Water Selectivity for Cold Production in Heavy Oil Reservoirs

Advanced Functional Materials, EarlyView.
A novel oil–water selective conformance control agent, MPRP, is prepared via hydrophilic grafting and mechanical granulation. MPRP uniformly disperses in water, cohesively expands upon aging, and readily dissolves in the oil phase. During conformance control, it selectively aggregates in water channeling pathways to form effective plugs without ...
Guang Zhao, Dongfang Lv, Chang Liu, Changxu Wu, Yifei Liu, Caili Dai, Huazhou Li   +6 more
wiley   +1 more source

Biodegradable and Biocompatible Functional Polymers for Biomedical Applications

Advanced Functional Materials, EarlyView.
Biodegradable and biocompatible functional polymers integrate electrical, mechanical, and stimuli‐responsive functionalities while enabling programmed degradation under physiological conditions. This review introduces recent advances in conductive, shape‐memory, self‐healing, photocurable, and adhesive polymer systems, emphasizing material design ...
Won Bae Han, Shuvra Mondal, Sungkeun Han, Chan‐Hwi Eom, Venkata Ramesh Naganaboina, Suk‐Won Hwang   +5 more
wiley   +1 more source

Prediction of coal mine roof water damage based on micro-seismic monitoring technology

Meikuang Anquan, 2023
Taking 307 working face of Tingnan Coal Mine as the engineering background, in order to verify the reliability of real-time monitoring of water flowing fractured zone height by micro-seismic monitoring data, the mechanical numerical simulation software ...
LIAN Huiqing, YANG Yi, YANG Songlin, TANG Zhongyi, XU Bin, PEI Wenxian, WANG Rui, LI Qixing
doaj   +1 more source

A Simple and Efficient Way to Detect the Mining Induced Water-conducting Fractured Zone in Overlying Strata [PDF]

, 2012
Coal mining operations in China are often threatened by the invasion of the groundwater into the mining panels. The most likely water disaster affecting the safe operation of coal mines is water from Cenozoic porous aquifers in the alluvial plain areas ...
Zhang, Shengtang, Liu, Yin
core   +1 more source

Tannic Acid‐Modified Cellulose Nanofiber Reinforced Polymerizable Eutectogels for High‐Performance Stretchable Strain Sensors

Advanced Functional Materials, EarlyView.
A polymerizable deep eutectic solvent is reinforced with tannic acid‐modified cellulose nanofibers to construct a hierarchical dynamic eutectogel network. Synergistic covalent and reversible interactions impart ultrahigh stretchability, high ionic conductivity, broad temperature tolerance, self‐healing, and strong adhesion, enabling robust wearable ...
Huang Wu, Yang Hu, Youmin Tuo, Weide Zhang, Nanzhu Bao, Haitao Wu, Zhuangzhuang Chu, Yunhua Chen, Tao Wang, Teng Yuan, Hongbo Zeng, Zhuohong Yang   +11 more
wiley   +1 more source

Research on the Development Height Prediction Model of Water-Conduction Fracture Zones under Conditions of Extremely Thin Coal Seam Mining [PDF]

Addressing the difficult problem of predicting the height of water-conducting fracture zones in shallow and thin coal seams, a prediction model of water-conduction fracture zones based on a backpropagation (BP) neural network was developed by integrating
Lei Li, Yuxin Yuan, Jiahao Tian, Hongsheng Wang, Dengfeng Chen, Bin Li   +5 more
core   +1 more source

Wearable Kirigami‐Apertured Capacitive Sensors for Continuous Cardiac Volumetric Monitoring

Advanced Functional Materials, EarlyView.
A wearable kirigami‐apertured carbon nanotube‐paper composite (K‐CPC) capacitive sensor enables cardiac volumetric monitoring. The kirigami process creates a central aperture with cantilevered fibers that confine the electric field, enhancing both sensitivity and lateral resolution.
Yu‐Jen Cheng, Shawn Kim, Jonathan Avery, Younghoon Kwon, Jae‐Hyun Chung   +4 more
wiley   +1 more source