A5100760561- High voltage insulation and dielectric phenomena
- Power Transformer Diagnostics and Insulation
- Tribology and Lubrication Engineering
- GABA and Rice Research
- Polymer-Based Agricultural Enhancements
- Aerodynamics and Fluid Dynamics Research
- Composting and Vermicomposting Techniques
- Vibration and Dynamic Analysis
- Energy Harvesting in Wireless Networks
- Mycotoxins in Agriculture and Food
- Lipid Membrane Structure and Behavior
- Aerosol Filtration and Electrostatic Precipitation
- Thermal Analysis in Power Transmission
- Spectroscopy and Quantum Chemical Studies
- Microbial Metabolism and Applications
- Soil Carbon and Nitrogen Dynamics
- Multilevel Inverters and Converters
- Sensorless Control of Electric Motors
- Surfactants and Colloidal Systems
- Electrostatic Discharge in Electronics
- Advanced Fiber Laser Technologies
- Biochemical and Structural Characterization
- Pesticide Residue Analysis and Safety
- Antimicrobial Peptides and Activities
- Advanced DC-DC Converters
Sichuan University
2011-2024
Fujian Normal University
2024
Peking University
2008
Introduction The objective of this study is to examine the impact various oyster shell soil conditioners, which are primarily composed shells, on growth tomatoes in acidic soil. Moreover, aim investigation analyze variety and structure bacterial populations close proximity tomato roots while also contributing understanding physical, chemical, biological mechanisms conditioners. Methods Tomato plants were grown red three groups: a control group treatment that used two types OS (oyster powder)...
A novel microwave (MW) rectifier based on a diode array is presented in this paper. The composed with sixteen HSMS-282 Schottky diodes applied to enhance the MW input power. proposed configuration improves power capacitance from 20 dBm level of single-diode up 30 level. design use replace single without significant modification original rectifying circuit. When between 23 and 33 load at hundred Ohm level, direct current (MW-DC) conversion efficiency above 60% realized. DC output voltage...
Abstract Variation in air pressure severely affects the insulation of electric vehicle (EV) motors, hence weakening reliability EVs for safe operation. Nomex‐polyimide‐Nomex, a typical material EV was used to investigate motor performance under different pressures. The results show that partial discharge inception voltage is significantly reduced motors operated at lower pressures, and probability (PD) occurrence increased. macroscopic reveal active area PD expands low pressure, while...
Abstract End turn grading with resistive–capacitive coupling experiences severe electrothermal stress when subjected to pulse width modulation (PWM) voltage. In this paper, several experiments and simulations were carried conducted for four types of end grading. First all, the temperature rise in increased a decrease time. When time was less than 500 ns, at terminal higher owing capacitive current coupled from main wall insulation. Further, linear region exhibited minimal variation different...
Abstract Stress grading systems using non‐linear resistive coatings are a key component to suppress surface corona in the end‐windings of rotating machine. Compared sinusoidal‐fed motor, high slew rate voltage at flanks repetitive square voltages from inverter cause large capacitive currents flow main wall insulation. These currents, if not properly considered design phase, lead severe electrothermal stress system. Experiments and simulations were conducted on system whose structure arises...
To investigate the structure, diversity, and function of different paddy soil fungal communities factors affecting them in typical cropping areas China, five Chinese soils were selected this study, composition diversity comparatively analyzed using high-throughput sequencing technology functionally predicted FUNGuild microecological tool. The results showed that： ① community samples from Heilongjiang （HLJ） was significantly lower than that other four regions （
Fluorescence probes play crucial roles in unraveling the structure and dynamics of cell membranes including membrane fluidity, polarity, lipid molecule ordering. The fluorescence lifetime describes average duration time that a fluorescent remains an excited state before returning to ground state, which is sensitive environmental changes. However, molecular mechanism inherent properties determine lifetimes remain unexplored inadequately studied. Furthermore, effects probe on are also unclear....
Strong partial discharge (PD) activities are generally present in large horizontal generators ( <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\ge 25$ </tex-math></inline-formula> MW and 6$ kV) that run continuously for long periods. The maintenance safe functioning of the motors depend on location offline PD problem. mechanical equipment can be utilized to find insulation flaws is designed this study....
Calcium is one prospective element for the modern optical frequency standard. The 423-nm transition line of calcium atoms has been widely used in laser slowing and cooling, precise spectrum measurement, magnetic trapping (MOT). However, there no any available commercial diode working at this wavelength. We built a based on extra bow-tie cavity by using Brewster-cut uncoated BIBO (BiB3O6) crystal, which worked room temperature, with conversion efficiency 3.75%, potential up to 20%.