A5061052469- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Heavy metals in environment
- Power Transformer Diagnostics and Insulation
- High voltage insulation and dielectric phenomena
- High-Voltage Power Transmission Systems
- Ferroelectric and Piezoelectric Materials
- Acoustic Wave Resonator Technologies
- Selenium in Biological Systems
- Rocket and propulsion systems research
- Aerosol Filtration and Electrostatic Precipitation
- Vibration and Dynamic Analysis
- Heavy Metals in Plants
- Advanced Fiber Laser Technologies
- Combustion and Detonation Processes
- Solid State Laser Technologies
- Microwave Dielectric Ceramics Synthesis
- Magnetic Properties and Applications
- Chromium effects and bioremediation
- Ga2O3 and related materials
- Chemical Looping and Thermochemical Processes
- Arsenic contamination and mitigation
- Acoustic Wave Phenomena Research
- Petroleum Processing and Analysis
- Photorefractive and Nonlinear Optics
Tianjin University
2024
Jilin Agricultural University
2024
Lingnan University
2024
North China Electric Power University
2015-2024
Huazhong Agricultural University
2023-2024
Anhui University of Technology
2021-2023
Ningxia University
2023
Northwest University
2023
State Key Laboratory of Crystal Materials
2016-2019
Shandong University
2016-2019
Selenium (Se) is a trace element that essential for human health. Daily dietary Se intake governed by the food chain through soil-plant systems. However, cadmium (Cd) content tends to be excessive in seleniferous soil, which and Cd have complex interactions. Therefore, it great challenge grow crops containing appreciable amounts of but low Cd. We compared effects five Se-transforming bacteria on uptake Brassica rapa L. native Cd-polluted soil. The results showed three Se-oxidizing (LX-1,...
Ca3NbGa3Si2O14 (CNGS) and Nd:Ca3NbGa3Si2O14 (Nd:CNGS) single crystals were grown using the Czochralski technique, dielectric, elastic piezoelectric properties of Nd:CNGS evaluated at room temperature by impedance method. It is proved that have larger dielectric constants, constants compliance as compared with CNGS crystals. The electronic structure chemical composition analyzed X-ray photoelectron spectroscopy (XPS). Constituent element representative core levels auger lines in this complex...
There are many types of acoustic sources in the ultrahigh voltage (UHV) substation. The signals UHV shunt reactors obtained by direct measurement include other phase reactor that very similar to subjected frequency domain characteristics, as well cooling fans and random noise. An signal separation method based on beamforming undetermined blind source was proposed. In this method, existing is improved masking beamforming, which can separate those components differing from spatial...
Antimony (Sb) is toxic to ecosystems and potentially public health via its accumulation in the food chain. Bioavailability toxicity of Sb have been reduced using various methods for remediation Sb-contaminated soil most studies. However, by microbial agents has rarely evaluated. In this study, we evaluated potential use Comamonas testosteroni JL40 bioremediation Sb-contamination. Strain immobilized more than 30 % Sb(III) solution oxidized over 18 Sb(V) detoxification. Meanwhile, strain...
Abstract To address the subjective issue of selecting measurement points based on mainstream line methods for hotspot temperature inversion in oil‐immersed power equipment, this paper demonstrates an reactor field method random forest (RF) point optimisation. Firstly, a calculation 22‐kV is proposed. In combination with Latin hypercube sampling, 50 sets data are calculated. Based these samples, selection RF feature importance and training genetic algorithm‐optimised back propagation (GA‐BP)...
A new three‐dimensional (3D) analysis method is proposed as the existing two‐dimensional (2D) has low accuracy in analysing vibration characteristics of oil‐immersed shunt reactors, such ultrahigh‐voltage (UHV) reactors. First all, a set 3D laminated coordinate systems was defined based on silicon steel lamination rules, which anisotropy magnetic properties for rolling direction (RD), transverse (TD), and (LD) were considered. Then, mapping between space rectangular system established to...
Water droplets on the surface of insulators can distort electric field and cause generation partial discharge or flashover. In this study, inception development discharges a 110 kV composite insulator were evaluated by using solar-blind ultraviolet imager. Several experiments conducted water differing in volume, conductivity, position an housing. The results showed that corona voltage decreases with increasing volume droplets. relative permittivity droplet increase conductivity then reduces...
A new core vibration calculation method of UHV shunt reactors is proposed to deal with the problem that parameters an ultra-high voltage (UHV) reactor cannot be measured on site. series tests have validated can calculate a different ratios. The adopted study influence nodal fluctuations AC tie line characteristics under normal and abnormal operating conditions. conclusion drawn as follows: in three states assessed herein, no matter whether power grid state or not, will not reach magnetic...
Under the background of economic globalization and rapid development science technology, higher education (HE) has undergone profound changes. Nowadays, in order to increase international competitiveness, training talents become primary task universities HE institutions. Therefore, taking Shenzhen as an example, research takes quantitative method study how educational resources society affect school from a macro perspective, micro perspective students, teachers schools, studying impact on...
The oil-immersed reactor is one of the important equipment in high-voltage and long-distance power transmission transformation system. ultra-high voltage (UHV) abnormal operation would produce gas, which a concerning problem at current project site. system consisting iron core, cellulose blocks yokes reactors may have mechanical resonance phenomena during operation. And vibration friction leads to metal losses, accelerate decomposition insulating oil paper. In order explore influence...
The potential for secondary-combustion with low-temperature solid propellant in gas generation is a risk to ejection application. This study performed three-dimensional dynamic numerical simulation Re-Normalization Group turbulence model and finite-rate/eddy-dissipation of two-step reaction mechanism better understand the interaction between ring-cavity structures, combustion effect on loads interior ballistic stabilization during ejection. zone rail cover was modelled as rigid body, its...
This paper is intended to propose a way of utilizing low-temperature waste heat what base on forced oil circulation cooling transformer.Cooling large power transformers affect the normal operation system.Existing techniques simply cool transformer, but there not take full advantage generated during cooling.This approach resulted in lot energy waste.In this we present an based most commonly used transformer mode heat.In paper, feasibility are discussed mainly from temperature, plant...