A5033742520- Railway Engineering and Dynamics
- Geotechnical Engineering and Underground Structures
- Infrastructure Maintenance and Monitoring
- Mechanical stress and fatigue analysis
- Geophysical Methods and Applications
- Civil and Geotechnical Engineering Research
- Adhesion, Friction, and Surface Interactions
- Structural Behavior of Reinforced Concrete
- Structural Engineering and Vibration Analysis
- Structural Load-Bearing Analysis
- Railway Systems and Energy Efficiency
- Tunneling and Rock Mechanics
- Soil Mechanics and Vehicle Dynamics
- RNA Research and Splicing
- Maritime and Coastal Archaeology
- Aerodynamics and Fluid Dynamics Research
- Prostate Cancer Treatment and Research
- BIM and Construction Integration
- Fire effects on concrete materials
- 3D Surveying and Cultural Heritage
- Underwater Acoustics Research
- Engineering Applied Research
- interferon and immune responses
- GNSS positioning and interference
- Thermography and Photoacoustic Techniques
Henan University
2025
Delft University of Technology
2018-2024
University of Birmingham
2024
Heilongjiang Institute of Technology
2021-2023
Harbin Institute of Technology
2021-2023
Vancouver Coastal Health
2012-2015
University of British Columbia
2015
Vancouver Coastal Health Research Institute
2012
McGill University
2000-2005
Railway track health monitoring and maintenance are crucial stages in railway asset management, aiming to enhance the train operation quality service life. For this aim, various inspection means (using diverse non-destructive testing techniques) have been applied, however, these mostly not able monitor whole network or underlying layers (e.g., ballast subgrade). The use of remote sensing techniques, such as Interferometric Synthetic Aperture Radar (InSAR), can expedite defect diagnosis...
Railway ballast performance is dictated by a complex mix of mechanical properties. These effect its at the particle level for example in terms degradation, but also track system settlement and stability. Therefore this paper seeks to develop new understandings behaviour identify opportunities future research directions. First, size distribution curves are discussed, considering improve breakage, drainage characteristics. Next, geometry with focus on form, angularity surface texture. This...
Crumb rubber (CR) has been proposed to apply in the ballast or sub-ballast layer for degradation mitigation and vibration (noise) reduction. The CR can change stiffness, which affect train-track-subgrade dynamic performance cause travel comfort safety issues. Towards this, this study aims at confirming 1) how much application of train layer; 2) what extent CR-ballast distribute loadings reduce subgrade surface stress. To achieve aim, a whole system model was built by coupling multibody...
Ground penetrating radar (GPR) has been applied for ballast layer inspection two decades, mainly the analysis of fouling levels. However, some issues that affect quality remain unsolved, such as involving GPR equipment (antenna) and correlation between indicator index. With aim solving these issues, in this paper, we investigated difference results different antennas, data processing technique, indicators level (by signal processing) index (obtained by sieving). The show antenna determines...
Vehicle-mounted ground-penetrating radar (GPR) has been used to non-destructively inspect and evaluate railway subgrade conditions. However, existing GPR data processing interpretation methods mostly rely on time-consuming manual interpretation, limited studies have applied machine learning methods. are complex, high-dimensional, redundant, in particular with non-negligible noises, for which traditional not effective when interpretation. To solve this problem, deep is more suitable process...
Urokinase plasminogen activator (uPA) plays an important role in the progression of several malignancies including breast cancer. We have identified a noncompetitive antagonist uPA-uPAR interaction derived from nonreceptor binding region uPA (amino acids 136-143). This 8-mer capped peptide (A6) inhibited cancer cell invasion and endothelial migration dose-dependent manner vitro without altering doubling time. Intraperitoneal administration A6 resulted significant inhibition tumor growth...
Abstract To simulate ballast performance accurately and efficiently, the input in discrete element models should be carefully selected, including contact model applied particle shape. study effects of shape on (shear strength deformation), direct shear test (DST) large-scale process simulation (LPST) were developed basis two types models, namely rolling resistance linear (RRL) (LC) model. Particle shapes are differentiated by clumps. A clump is a sphere assembly for one particle. The results...
The dynamic response of a railway bridge can be affected by the properties its foundations, particularly if founded on soft soils. Thus, this work aims to establish coupled model investigate vibration train-track-bridge systems considering piled foundations embedded in soil. Firstly, construct simulation framework, finite element and multi-body methods are used behavior interaction (TTBI) system pier-cap-pile-soil system. equilibrium two sub-systems is maintained through bridge's bearing...
Approximately half of prostate cancers (PCa) carry TMPRSS2-ERG translocations; however, the clinical impact this genomic alteration remains enigmatic. Expression v-ets erythroblastosis virus E26 oncogene like (avian) gene (ERG) promotes prostatic epithelial dysplasia in transgenic mice and acquisition epithelial-to-mesenchymal transition (EMT) characteristics human cells (PrECs). To explore whether ERG-induced EMT PrECs was associated with therapeutically targetable transformation...
This paper presents a multi-layer railway ballast track and substructure model, where coupled discrete continuous method is used for macro-meso dynamic behaviour analysis under moving wheel loads. In this the element (DEM) utilised to build superstructure of (i.e. rail, fastener, sleeper layer), which considers complex shape particle size distribution from mesoscopic level. The finite difference (FDM) simulate subgrade foundation) with consideration computing cost. And then, model achieved...
Differential railway track settlement can result in ballast voids, leading to sleepers that hang from the rail and are no longer supported by ballast. These hanging damage for component. As a solution, this paper proposes investigates new concept sleeper with wedge-shaped geometry, intended stimulate migration of into any thus reducing occurrence sleepers. A series scaled laboratory tests 2D 3D discrete element simulations used investigate different geometries. The investigations include...
Ballast layer defects are the primary cause for rapid track geometry degradation. Detecting these in real-time during inspections is urgently needed to ensure safe train operations. To achieve this, an indicator, degradation rate (TDR) was proposed. This calculated using inspection data locate and predict railway-line sections with ballast defects. The TDR determined by monthly standard deviation of rail longitudinal level, which one aspect geometry. Layer Health Classification (BLHC)...