A5031545913- Coal Properties and Utilization
- Hydrocarbon exploration and reservoir analysis
- Rock Mechanics and Modeling
- Methane Hydrates and Related Phenomena
- Coal and Its By-products
- Thermochemical Biomass Conversion Processes
- Atmospheric and Environmental Gas Dynamics
- NMR spectroscopy and applications
- Hydraulic Fracturing and Reservoir Analysis
- Petroleum Processing and Analysis
- Landslides and related hazards
- Geoscience and Mining Technology
- Geomechanics and Mining Engineering
- Coal and Coke Industries Research
- Carbon Dioxide Capture Technologies
- Breast Cancer Treatment Studies
- Granular flow and fluidized beds
- Geophysical Methods and Applications
- CO2 Sequestration and Geologic Interactions
- Geochemistry and Elemental Analysis
- Fiber-reinforced polymer composites
- Fire Detection and Safety Systems
- Torture, Ethics, and Law
- Food Safety and Hygiene
- High Entropy Alloys Studies
Northeast Forestry University
2025
China University of Mining and Technology
2013-2024
Peking Union Medical College Hospital
2006-2024
Chinese Academy of Medical Sciences & Peking Union Medical College
2006-2024
Shanghai Tunnel Engineering (China)
2024
Chengdu University of Technology
2024
Huangshan University
2024
Xi'an University of Science and Technology
2015-2022
Heilongjiang University of Science and Technology
2021
University of Technology Malaysia
2021
Coupled with isothermal adsorption and the Steele potential function, characteristics of nanopores their impact on methane diffusion in low- to medium-rank tectonically deformed coals (TDCs) were revealed by high-pressure mercury intrusion low-pressure N2/CO2 gas adsorption. The specific surface area (SSA) low medium TDCs is mainly provided micropores (<2 nm, 96.64–99.56%), pore volume macropores (>50 99.68–99.91%). fractal can be divided into four groups, i.e., D1 (>100 nm), D2 (<100 D3 (>8...
The competitive adsorptions of CH4/CO2/H2O on coal vitrinite (DV-8, C214H180O24N2) were computed based density function theory (DFT) and grand canonical Monte Carlo (GCMC). adsorption process reaches the saturation state after adsorbing 17 CH4s, 22 CO2s, 35 H2Os per C214H180O24N2 respectively. optimal configurations CH4-vitrinite, CO2-vitrinite, H2O-vitrinite respectively manifest as aromatic1/T2/rT3 (1 location, 2 sites T here represents above carbon atom heteroatom, 3 orientation rT means...
The self-, Maxwell-Stefan-, and transport diffusions of CO2, CH4, N2 in coal vitrinite macromolecules were simulated through molecular dynamics. Results indicated that these diffusion coefficients increase slowly when T < 340 K while rapidly at > independent the adsorbate numbers types. self- ([CO2] [N2] [CH4] order) ([N2] [CO2] decrease with increasing number. activation energy (ΔE) vitrinite-n CO2 (5.07, 5.73, 15.96 kcal/mol for vitrinite-5 vitrinite-10 vitrinite-22 respectively) is lower...
The object of the study is lignite. Analytical testing techniques, such as elemental analysis, 13C nuclear magnetic resonance (13C NMR) spectroscopy, Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron (XPS), and high-resolution transmission electron microscopy (HRTEM), were used to acquire information on structural parameters aromaticity Xianfeng lignite 43.57%, aromatic carbon structure mainly naphthalene anthracene/phenanthrene. aliphatic dominated by cycloalkanes, alkyl...
Although many studies based on naturally deformed samples have been carried out to investigate the pore-crack characteristics of shales, high temperature (T) and pressure (P) deformation experiments, which can exclude sample heterogeneity factors, simulate deep T-P conditions, generate a continuous sequence, are still rare. In this study, shales with different levels generated by triaxial compression methods including scanning electron microscopy, mercury injection, gas sorption utilized...
Tectonic deformation damages the macromolecular structures of coal. No evidence can be found tectonically deformed coal (TDC) structures, in which traces lattice defects exist. In this study, mechanisms ductile and evolution molecular structure have been investigated using samples collected from one thrust fault Qinan Coal Mine China. Various characterization methods, such as Raman spectroscopy (Raman), Fourier transform infrared (FTIR), X-ray diffraction (XRD), nuclear magnetic resonance...
Abstract Background Ultrasound is more widely used than mammography for early diagnosis of breast cancer in China as most Chinese women have small and dense mammary glands. This study compared the diagnostic performance ultrasound among with suspected lesions. Methods From November 2019 to 2021, we results lesion 2737 consecutive participants lesions; all patients underwent biopsies. We measured sensitivity, specificity, accuracy separately. Results Among participants, 2844 lesions were...
The abundant nanopores in shale make it an unconventional reservoir for oil and gas. Matrix compressibility heterogeneity are crucial fluid accumulation migration, yet these two properties remain unclear reservoirs. Herein, we investigated the matrix compressibility, multifractal properties, their geological governing factors nanoporous Yanchang from Ordos Basin, China, utilizing petrophysical experiments, mercury injection capillary pressure (MICP), low-pressure gas adsorption. Furthermore,...