A5011960362- Rock Mechanics and Modeling
- Geophysical Methods and Applications
- Coal Properties and Utilization
- Landslides and related hazards
- Geoscience and Mining Technology
- Fiber-reinforced polymer composites
- Asymmetric Synthesis and Catalysis
- Seismic Waves and Analysis
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Advanced ceramic materials synthesis
- Seismic Imaging and Inversion Techniques
- Graphene research and applications
- Structural Response to Dynamic Loads
- Geotechnical and Geomechanical Engineering
- Synthetic Organic Chemistry Methods
- Geotechnical Engineering and Analysis
- Synthesis and properties of polymers
- Geomechanics and Mining Engineering
- Membrane-based Ion Separation Techniques
- Advancements in Battery Materials
- Mineral Processing and Grinding
- Geotechnical Engineering and Underground Structures
- Synthesis and Catalytic Reactions
- Tunneling and Rock Mechanics
Masteel (China)
2024-2025
Sinosteel (China)
2024-2025
Anhui University of Technology
2017-2025
Wuhan Institute of Technology
2024
China University of Mining and Technology
2014-2024
Shaanxi University of Technology
2022-2023
Southwest Jiaotong University
2018-2023
China University of Petroleum, East China
2021
Henan Polytechnic University
2020
Shandong University of Science and Technology
2019-2020
Brittleness has a significant influence on rock failure under compression; however, the mechanism is rarely comprehensively discussed. This study numerically investigates brittleness effect microcracking behavior of crystalline using grain-based model implemented into two-dimensional particle flow code, with focus discussion how affects mechanism. The simulated mode changes from tension to shear decreasing brittleness, which consistent previous laboratory test results. As gradually decreases...
Dynamic disasters in Chinese coal mines pose a significant threat to productivity. Thus, thorough understanding of the deformation and failure processes is necessary. In this study, energy dissipation rate proposed as novel indicator under static dynamic compressive loads. The relationship between stress-strain, uniaxial strength, displacement rate, loading fractal dimension, was investigated through experiments conducted using MTS C60 tests (static loads) split Hopkinson pressure bar system...
A comprehensive understanding of the failure behavior and mechanism coal is a prerequisite for dealing with dynamic problems in mining space. In this study, under uniaxial compressive loads were experimentally numerically investigated. The experiments conducted using split Hopkinson pressure bar (SHPB) system. results indicated that typical lateral axial at lower loading rates totally smashed higher rates. further fractography analysis fracture fragments load caused by tensile brittle...
Infants exhibit remarkable language acquisition abilities, supported by highly plastic neural substrates that dynamically interact with early speech experiences. However, the developmental mechanisms of these and their specific role in remain incompletely understood. Here, we present NeoAudi Tract (NAT), a robust automated toolbox for extracting full set auditory tracts infants from birth to 24 months using $3$T diffusion MRI data. By characterizing microstructural changes tracts,...
Numerous floor water inrush (FWI) disasters have occurred during the roof weighting period in China. Therefore, to clarify why FWI accidents tend cluster at a specific mining stage, novel method for evaluating failure depth of floors (FDMF) under dynamic loads induced by breakage is proposed this study. By employing Matlab programming, stress distribution and patterns intact were analyzed, revealing response characteristics. In addition, accuracy theoretical model was further verified...
We report a highly practical one-pot method for synthesizing multi-substituted indolizines from α-halide carbonyl compounds, pyridines and electron deficient alkenes in the presence of copper acetate monohydrate sodium DMF. A variety function groups are tolerable standard reaction conditions, including aldehyde. 36 examples were presented. The yield indolizine was moderate to high. Furthermore, can be prepared at gram scale by this method.
A novel “three‐step approach” of methanesulfonic acid/γ‐aminopropyl triethoxy silane/GlycidylEthyl polyhedral oligomeric silsesquioxane (MSA/KH550/POSS) was proposed to functionalize the surface high modulus poly ( p‐ phenylene‐2,6‐benzobisoxazole) (HMPBO) fibers. Results indicated that GlycidylEthyl POSS successfully grafted on HMPBO fibers and roughness increased obviously. The single fiber pull‐out strength POSS‐ g ‐HMPBO/epoxy resin microcomposite improved 1.19 MPa, better than native...
An efficient asymmetric allylic alkylation reaction with respect to 3-alkylidene oxindoles and racemic Morita-Baylis-Hillman carbonate has been achieved by using a chiral biscinchona alkaloid catalyst, which delivers the γ-substituted alkylideneoxindoles tertiary center in moderate good yields (up 92%) very enantioselectivities >99% ee).
Coal fractography is a powerful tool for interpreting coal fracture behaviors, which significant dealing with failure issues encountered in deep mining. However, the accuracy of highly depends on method quantitatively characterizing surfaces. In this study, under dynamic impact loading was investigated based multifractal method, spectrum parameters were proposed to describe The width [Formula: see text] characterizes uniformity surface asperity distribution, and parameter text]–[Formula:...
The energy dissipation of coal under dynamic loads is a major issue in geomechanics and arising extensive concerns recently. In this study, loading tests were conducted using split Hopkinson pressure bar (SHPB) system, the characteristics behavior analyzed, mechanism was discussed based on fracture processes loads. Experimental results indicate that has positive linear correlation with both incident compressive strength, coefficients between energy, strength rate are 0.74 0.98, respectively....
Microseismic (MS) technology has been widely adopted for monitoring coal and rock dynamic disasters. Insights into MS wave characteristics contribute to the accurate prediction of these In this study, were analysed from three aspects: signal spectra, wavelet packet energy fractal features. It is shown that prior burst, main frequency decreased following a power law, amplitude linearly increased, tended become concentrated on low bands, correlation dimension decreased. When burst occurred,...
An efficient asymmetric vinylogous Michael addition of 3-alkylidene oxindoles and enals has been achieved using a chiral TBS-protected diphenylprolinol catalyst. The γ-substituted alkylidene obtained bear tertiary center are afforded in moderate to good yields excellent enantioselectivities.