A5101872504- Rock Mechanics and Modeling
- Landslides and related hazards
- Geotechnical and Geomechanical Engineering
- Geomechanics and Mining Engineering
- Geotechnical Engineering and Underground Structures
- Geotechnical Engineering and Analysis
- Geophysical Methods and Applications
- Tunneling and Rock Mechanics
- Geoscience and Mining Technology
- High Entropy Alloys Studies
- High voltage insulation and dielectric phenomena
- High-Temperature Coating Behaviors
- Power Transformer Diagnostics and Insulation
- Dam Engineering and Safety
- High-Velocity Impact and Material Behavior
- Crystallization and Solubility Studies
- Advanced materials and composites
- Drilling and Well Engineering
- Evaluation and Optimization Models
- Smart Materials for Construction
- Hydrological Forecasting Using AI
- Magnetic Properties of Alloys
- Electrodeposition and Electroless Coatings
- Seismic Imaging and Inversion Techniques
- X-ray Diffraction in Crystallography
Northeastern University
2014-2024
State Grid Corporation of China (China)
2024
Bureau of Geology and Mineral Exploration and Development of Guizhou Province
2024
Inner Mongolia University of Technology
2023
Xinyu University
2023
ORCID
2022
Sichuan College of Architectural Technology
2022
Sichuan Institute of Building Research
2022
State Key Laboratory for Geomechanics and Deep Underground Engineering
2020-2021
Wuhan University of Technology
2014-2021
Polyimide nano-composite film (Kapton 100CR) is a special type of engineering plastic film, which widely used in turn insulation form-wound inverter-fed motor. Partial discharge (PD) caused by high-frequency surge impulse one the key factors leading to premature failure motors. Aging experiments on samples under repetitive bipolar square voltage were carried out this study. Experimental results show that, presence PD, damage structure polyimide concentrated surface layer sample. Moreover,...
In order to investigate the effects of inorganic nanofillers on electrical properties polyimide (PI), PI/Al <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> O xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> nanocomposites films were prepared via in-situ polymerization. The hybrids characterized by scanning electron microscope (SEM) and Fourier transform infrared spectroscopy (FTIR). dielectric behaviors pure PI PI/Al2O3 samples studied...
As the depth of mines continues to increase, problems high temperature and potential heat damage become more prominent. In this study, characteristics natural industrial sources in were reviewed, then mainstream hazard governance technologies corresponding utilization methods discussed compared. The first category comprises optimization ventilation systems, insulation roc heat, artificial refrigeration. These cooling approaches are limited because resources cannot be recovered. second is...
Surface subsidence is common geologic hazard in coal mines when longwall mining method applied. In this research, a Bonded Block Model (BBM) selected to numerically simulate and analyze the surface of mines. Parametric study conducted key factors controlling are characterized. BBM models with no bedding planes realistically maximum subsidence, but overestimate levels above panel edges. The introduced potentially provide more realistic profile. separation downward bending layered strata, as...
Abstract In order to understand the mechanical properties and fracture surface roughness characteristics of thermally damaged granite under dynamic splitting, Brazilian splitting tests were conducted on samples after thermal treatment at 25, 200, 400, 600°C. Results show that peak strength increases with increasing strain rate, showing obvious strain‐rate sensitivity. With temperature, induced cracks in transform from intergranular intragranular cracks, a transgranular crack network....
Neuropsin (kallikrein 8, KLK8) is a secreted-type serine protease preferentially expressed in the central nervous system and involved learning memory. Its splicing pattern different human mouse, with longer form (type II) only human. Sequence analysis suggested recent origin of type II during primate evolution. Here we demonstrate that absent nonhuman primates, thus human-specific splice form. With use an vitro assay, show T to A mutation (c.71-127T>A) triggers change pattern, leading novel...
The automatic P-wave onset time (P-onset) picking of microseismic (MS) waveforms generated during rock failure is the basis and key to locating source exploring mechanism in underground engineering. However, it hard ensure accuracy P-onset MS with a low signal-to-noise ratio (SNR) mixed noises. Moreover, traditional methods mainly depend on manual intervention, which imposes onerous requirements SNR waveforms. Hence, new method proposed based deep learning model: principal components are...
Polyimide (PI) film is an important type of insulating material used in inverter-fed motors. Partial discharge (PD) under a sequence high-frequency square impulses one the key factors that lead to premature failures insulation systems In order explore damage mechanism PI caused by discharge, aging system surface bipolar continuous impulse voltage (BCSIV) designed based on ASTM 2275 01 standard and electrical tests samples are performed above partial inception (PDIV). The chemical bonds...
To investigate the dynamic compressive properties and law of energy dissipation freeze–thaw-damaged sandstone, static experiments were conducted. The influences number freeze–thaw cycles strain rate on strength characteristics, fractal dimension characteristics sandstone evaluated. Based peak rate, a damage variable was established. results show that increases exponentially with there exists threshold. When is below this threshold, increasing DIF slows down increase in cycles; when higher...