A5087202994- Machine Learning in Materials Science
- Ga2O3 and related materials
- Enhanced Oil Recovery Techniques
- Hydraulic Fracturing and Reservoir Analysis
- Civil and Geotechnical Engineering Research
- Electronic and Structural Properties of Oxides
- Oil and Gas Production Techniques
- Climate change and permafrost
- Corrosion Behavior and Inhibition
- Gear and Bearing Dynamics Analysis
- Injection Molding Process and Properties
- Transport Systems and Technology
- Surface Modification and Superhydrophobicity
- High voltage insulation and dielectric phenomena
- NMR spectroscopy and applications
- Vehicle Dynamics and Control Systems
- Radiative Heat Transfer Studies
- Force Microscopy Techniques and Applications
- Concrete and Cement Materials Research
- Fluid Dynamics Simulations and Interactions
- Cryospheric studies and observations
- Innovative concrete reinforcement materials
- Engineering Structural Analysis Methods
- Structural Engineering and Vibration Analysis
- Flow Measurement and Analysis
University of Helsinki
2024
Helsinki Institute of Physics
2024
East China University of Technology
2021-2022
Northeast Petroleum University
2006-2021
Donghua University
2019
Yanbian University
2015
Chang'an University
2013
Changsha University of Science and Technology
2011-2012
Beijing Jiaotong University
2012
β-gallium oxide (β-Ga2O3) shows great promise for electronics applications, particularly, in future space operating devices exposed to harsh radiation environments extended times. This study focuses on crucial, yet not fully explored, aspects of damage this material, such as threshold displacement energies and formation various radiation-induced Frenkel pairs. Analyzing over 5,000 molecular dynamics simulations based our machine-learning potentials, we conclude that the two Ga sites,...
The vibration induced by blasting excavation of the subway tunnel in complex urban environments may cause harmful effects on adjacent buildings. Investigating dynamic response buildings is a key issue to predict and control hazards. In this paper, right below building was selected as case study, blast vibrations field were monitored. Hilbert–Huang Transform (HHT) model used extract analyze time-frequency characteristic parameters signals. By substituting intrinsic mode functions (IMF)...
In this study, based on the background of massive freezing engineering in coastal strata, thermal physical parameters and some laws soil were obtained through tests frozen frost heaving tests. When temperatures −5°C, −10°C, −15°C, −20°C, rates 0.53%, 0.95%, 1.28%, 1.41%, forces 0.37 MPa, 0.46 0.59 0.74 respectively. range test conditions, rate force increased with decrease temperature, relationship was roughly linear temperature. The entire cooling process could be divided into three stages:...
The design of water-resistance and breathable materials applied to the protection a historical silk textile has raised considerable interest for their highly practical potential. Thus, simple functional composite coatings have been investigated on Bombyx mori fabrics by spraying fibroin water soluble siloxane emulsion enriched with silica nanoparticles (12 nm). layer surface fabric resulted in mesoscopic molecular network reconstruction hydrogen bonds crosslinking ethylene glycol diglycidyl...
$\beta$ phase gallium oxide ($\beta$-$\rm Ga_2O_3$) demonstrates tremendous potential for electronics applications and offers promising prospects integration into future space systems with the necessity of high radiation resistance. Therefore, a comprehensive understanding threshold displacement energy (TDE) radiation-induced formation Frenkel pairs (FPs) in this material is vital but has not yet been thoroughly studied. In work, we performed over 5,000 molecular dynamics simulations using...
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With the finite elements analysis and topological optimization algorithm, head structure of four-wheel independent drive pure electric vehicle is regarded as objective. The vehicle’s optimized by LS-DYNA LS-TASC on condition that whether considering compatibility constraint. mass fraction curve, distribution convergence curve results are used to analyze influence when crash compatibility, verify good means homogeneous geometric impact force in contact surface.
In order to study the influence of horizontal well with chemical flooding on remaining oil side interlayer after polymer flooding, experiments about high concentration activator alternating and variable are completed, determining optimum position way injection production water flooding. Results show that three methods all can improve recovery efficiency effectively; compared improved difference is small because same total amount; not only enlarge sweep volume, but also wash oil, enhance...
Aimed at BH heat-resistant polymer, 4500mg/L solution is compounded by oilfield sewage, and then diluted into 1500mg/L sewage again under room temperature, aging in the constant temperature box of 95°C finally. Test slides are made different time heat-resistance polymer solution, whose thermal stability manifested atomic force microscope. Results show aggregation degree after for 30d, 60d, 90d 95°C. They gather largely before aging, a loose branch distribution. After their declines, length...
This paper research the hydrolysis law of BH heat-resistant polymer in distilled water, oil field clear water and waste inspect its long-term thermal stability water. The results showed that there is few difference about degree between ZIIordinary will hydrolyze faster than different concentrations solution under same temperature increases with increase aging time, higher concentration, viscosity solution, smaller degree. high increase, caused from 95°C to 120°C. AMPS group not 95°C.
Retracted.
Abstract In order to improve the recovery of gas slug compound flooding in low permeability and ultra-low reservoirs, two methods carbon dioxide-nitrogen rich gas-nitrogen are studied. The results show that use a single injection reasonable pre-slug(carbon dioxide or gas) + subsequent nitrogen can reduce size pre-slug, give full play advantages both pre-slug nitrogen, obtain better efficiency. Under same conditions, cores used this experiment is 7.6% higher than on average. However, since...