A5045079312- Aluminum Alloy Microstructure Properties
- Aluminum Alloys Composites Properties
- Solidification and crystal growth phenomena
- Metallurgy and Material Forming
- Microstructure and mechanical properties
- Advanced Welding Techniques Analysis
- Magnesium Alloys: Properties and Applications
- Metallurgical Processes and Thermodynamics
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Induction Heating and Inverter Technology
- Cardiac pacing and defibrillation studies
- Cardiac Arrhythmias and Treatments
- Metallurgy and Material Science
- Metal-Organic Frameworks: Synthesis and Applications
- Metal Forming Simulation Techniques
- Power Systems and Renewable Energy
- Metal Alloys Wear and Properties
- Electromagnetic Effects on Materials
- Microgrid Control and Optimization
- Industrial Automation and Control Systems
- High-Voltage Power Transmission Systems
- Metallic Glasses and Amorphous Alloys
- Microstructure and Mechanical Properties of Steels
- Cardiac electrophysiology and arrhythmias
Beijing Hua Xin Hospital
2020-2025
Tsinghua University
2002-2025
Beijing Polytechnic
2022-2024
Xi'an Shiyou University
2024
First Affiliated Hospital of Xinjiang Medical University
2024
Xinjiang Medical University
2024
Northeastern University
1997-2023
Institute of Botany
2023
Tsinghua Sichuan Energy Internet Research Institute
2022
Hefei University of Technology
2021
In this work, epitaxial Pb(Zr0.4Ti0.6)O3 (PZT) thin films with different thicknesses were deposited on Nb-doped SrTiO3 (NSTO) single-crystal substrates by chemical solution deposition (CSD), and their ferroelectric resistive switching behaviors investigated. The results showed that the maximum ON/OFF ratio up to 850 could be obtained in PZT/NSTO heterostructure 150 nm thick PZT film. On basis of Schottky-Simmons model modified semiconductor theory, we also evaluated interfacial built-in...
In order to solve the problem of data center energy supply, this paper proposes a topology integrated supply system based on medium voltage DC, and establishes comprehensive evaluation model scheme. Based high requirements for reliability, designs "hand-in-hand" key parameters such as level topology. evaluate topological performance designed system, efficiency, availability, net present value, carbon emission reduction ratio other indicators. The simulation is established in PSCAD / EMTDC,...
Purpose Rubber-plastic double-layer bush water-lubricated bearings have demonstrated superior performance, while research on their vibration characteristics remains limited. This paper aims to investigate the lubrication and properties of these by experiments examine effect rubber-to-plastic thickness ratio bearing performance. Design/methodology/approach A journal test rig is constructed, three with different ratios are fabricated. Bush deformation under various loads measured, friction...
<title>Abstract</title> In this study, we propose a Least Squares Support Vector Machine (LSSVM) combining the hyperparametric optimization of Northern Goshawk algorithm (NGO) with an improved Multi-Objective Particle Swarm Optimization (MOPSO) Algorithm for linear motors. Meanwhile, in order to improve performance MOPSO terms population diversity, convergence speed and local search ability, incorporate chaotic mapping dynamic weighting mechanism. With approach, motors can be predicted more...
While this syndrome is associated with bicuspid aortic valve, here we report a case presenting Shone's complicated by unicuspid valve.
Ferroelectric thin films have been extremely studied for many applications such as nonvolatile memories, super capacitors, and solar cells. For these devices, improving the polarization properties of ferroelectric is great significance to their performance. Here, Au-lead zirconate titanate (PZT) nanocomposite were prepared by a simple one-step chemical solution deposition (CSD) method on silicon substrates, effects Au concentration investigated. The experimental results show that remanent...
To investigate the clinical features of preexcitation-induced dilated cardiomyopathy in infants and evaluate safety efficacy radiofrequency ablation (RFCA) these patients.This study included 10 (4 males 6 females) with mean age 6.78±3.14 months, weight 8.11±1.71 kg, left ventricular ejection fraction (LVEF) was 32.6±10.34%. Tachycardiomyopathy has been excluded all patients were refractory to drugs. All underwent RFCA.All accessory pathways located on right free wall acute success rate 100%....
In this present study, AA 7072/7075/7072 composite sheets with different finish rolling temperatures (210 ∼ 350 °C) were prepared by the muti-pass hot process. Effects of final temperature on microstructure and properties investigated after aging (AA 7075-T6 composite) via optical microscopy (OM), scanning electron (SEM), backscatter diffraction (EBSD) transmission microscope (TEM). It was found that bendability alloy is highly dependent temperature. The results show when increasing...
The effect of pulse electric current with different density on solidification structures hypoeutectic Al-7%Si, Al-10%Si and hypereutectic Al-22%Si alloys was studied. shape distribution α-Al Si were analysed.The experimental results showed that α- Al Al-7% alloy is shortened when applied a during the solidification, microstructure turns from obvious columnar crystal into rosette. After treatment current, primary refined obviously. When discharge voltage 3kV, tended to gather at edge sample...
The effects of high intensity ultrasonic melt treatment on the microstructure magnesium alloys were investigated in this paper. Magnesium melts treated with power wave and then cooled to a predetermined temperature. With increase power, structure exhibited refined spheroidzed crystal grains. After further increasing grains tended somewhat coarsened. And processing time led grain refinement alloy.
Improving the tunability of depletion layer width (DLW) in ferroelectric/semiconductor heterostructures is important for performance some devices. In this work, 200-nm-thick Pb(Zr0.4Ti0.6)O-3 (PZT) films were deposited on different Nb-doped SrTiO3 (NSTO) substrates, and DLW at PZT/NSTO interfaces studied. Our results showed that maximum was achieved NSTO substrate with 0.5 wt% Nb. On basis modified capacitance model ferroelectric semiconductor theory, we suggest can be attributed to a...
Load dumping overvoltage has a significant effect on insulation coordination of direct current (DC) transmission system. Based the PSCAD/EMTDC electromagnetic transient simulation programs, this paper built calculation model ultra high-voltage (UHVDC) Respectively, we have done comparative research during load under three rated-load operations, which are bipolar operation with ground return, unipolar metal concluding that alternating (AC) inverter side these operations can result in no less...