A5114929196- Antenna Design and Analysis
- Advanced Antenna and Metasurface Technologies
- Electric Vehicles and Infrastructure
- Lignin and Wood Chemistry
- Heat Transfer Mechanisms
- Thermochemical Biomass Conversion Processes
- Microwave Engineering and Waveguides
- Antenna Design and Optimization
- Advanced Decision-Making Techniques
- Aerodynamics and Acoustics in Jet Flows
- Vehicular Ad Hoc Networks (VANETs)
- Catalysis and Hydrodesulfurization Studies
- Coal and Its By-products
- Ultrasound and Hyperthermia Applications
- Opinion Dynamics and Social Influence
- Advanced Sensor and Control Systems
- Optical Systems and Laser Technology
- Advanced Materials and Mechanics
- Lattice Boltzmann Simulation Studies
- Opportunistic and Delay-Tolerant Networks
- Wireless Sensor Networks and IoT
- Advanced SAR Imaging Techniques
- Light effects on plants
- Advanced Battery Technologies Research
- Imbalanced Data Classification Techniques
Hebei Agricultural University
2025
Affiliated Hospital of Hebei University
2018-2024
Nanjing University of Science and Technology
2017-2024
Guangdong University of Technology
2024
Hebei University of Economics and Business
2024
Xinjiang University
2024
Zhejiang University of Technology
2022-2023
Shanghai Industrial Technology Institute
2022
Qingdao University of Science and Technology
2022
Northwest A&F University
2019-2020
Abstract This study evaluates the feasibility of two thermal pretreatments including hydrothermal carbonization (HTC) and low temperature pyrolysis (LTP) on production Eucommia ulmoides biochar. The waste wood Oliver was pretreated characterized for fuel applications. results confirm that both LTP HTC are promising processes improving properties. However, same char yield, required is lower than LTP, as yields H 200 L 300 were quite close (66.50% vs. 66.74%). surface morphology significantly...
Abstract Electric vehicle (EV) is considered eco-friendly with low carbon emission and maintenance costs. Given the current battery charging technology, driving experience of EVs relies heavily on availability reachability EV infrastructure. As number piles increases, carefully designed arrangement resources efficient utilization infrastructure essential to future development industry. The mobility distribution determine demand load power grid. Then, dynamic traffic pattern numerous...
PURPOSE: To compare image quality, iodine intake, and radiation dose in overweight obese patients undergoing abdominal computed tomography (CT) enhancement using different scanning modes contrast medium. METHODS: Ninety (25 kg/m 2 ≤body mass index (BMI)< 30 BMI≥30 ) who underwent CT-enhanced examinations were randomized into three groups (A, B, C) of each scanned gemstone spectral imaging (GSI) +320 mgI/ml, 100 kVp + 370 120 respectively. Reconstruct monochromatic energy images group A at...
Nuclear grade axial flow fans are widely used in nuclear power plants for ventilation and heat dissipation have the advantages of high efficiency rates. A fan with OGVs (outlet guide vanes) can recover kinetic energy dynamic impeller outlet winding to increase ventilator pressure, thus improving efficiency; therefore, play an essential role performance fan. Based on accurate numerical simulations, MRGP approximation model was developed analyse factors affecting duct optimise vane structure,...
Consolidated and ubiquitous travel information availability is key to intelligent transport system (ITS). However, it expensive for fixed infrastructure based wireless network provide total coverage offer communication capacity. RFID enabled Vehicular Ad hoc Network (VANET) emerges as an alternative which can leverage mobile nodes bridge the gap between isolated islands often existing in networks. The low duty cycle activity of links VANET may destroy connectivity network. This paper...
Abstract With the popularization of new energy electric vehicles (EVs), recommendation algorithm is widely used in relatively field charge piles. At same time, construction charging infrastructure facing increasing demand and more severe challenges. ubiquity Internet (IoVs), inter-vehicle communication can share information about experience traffic condition to help achieving better higher efficiency. The piles great value. However, existing methods related such consider inadequate reference...
Background/Aims: Unlike other organs, which only have one set of capillary network, the renal microvasculature consists two sets network series connected by efferent arterioles. Angiotensin II constricts glomerular artery. Hence, tumor blood flow (BF) distribution may be different from tumors in organs. This study aims to investigate effects angiotensin on hemodynamics intrarenal VX2 using perfusion computed tomography(CT). Methods: Twenty-four male New Zealand white rabbits were randomly...
Large axial fans are widely used in industrial refrigeration, building ventilation, and other scenarios because they have inlet guide vanes (IGVs) outlet (OGVs) to make their operation economical efficient. However, unreasonable vane structure is prone flow separation, forming a tail vortex interfering with blades, thereby resulting the deterioration of working conditions large noise. Taking fan both IGVs OGVs as research object, this paper analyzed structural variables by global sensitivity...
This study aims to address the limitations in gesture recognition caused by susceptibility of temporal and frequency domain feature extraction from surface electromyography signals, as well low rates conventional classifiers. A novel approach was proposed, which transformed signals into grayscale images employed convolutional neural networks The method began segmenting active portions using an energy threshold approach. Temporal voltage values were then processed through linear scaling power...
In this paper, a novel method is proposed to measure the initial velocity of rocket based on STFT (the short-time Fourier transform) and WT (wavelet transform). The radar echo signal processing procedure involves following steps: sampling process, overlapping windows, wavelet decomposition reconstruction, computing FFT (Fast Transform) spectrum analysis, power peak detection. Then, according detection spectrum, corresponding Doppler frequency obtained. Finally, basis relationship between...
To resolve the mutual coupling problem between array elements operating at different frequencies with a frequency ratio of 1.5, novel shared-aperture solution is presented in this paper, which realized by two substrates embedded within each other dielectric constants. The transceiver antenna work 20/30GHz, LHCP/RHCP modes, respectively. In array, 2x2 are grouped for sequential rotation to improve axial antenna. influence on performance analyzed, and it found that electromagnetic crosstalk...
Genetic algorithm (GA) is employed for thinned array synthesis in this paper, and the side lobe level used as optimization target to optimize position of elements. The simulation results show that −17dB achieved under condition 50% sparse rate, which verifies effectiveness algorithm. By adopting array, channel number phased arrays reduced, thus reducing antenna cost.
The limitations of conventional beam widening methods such as 0/$\pi$ phase matching method, defocus method and array elements reduction are compared analyzed in this paper. To balance larger multiple lower side lobe level, a chaotic particle swarm optimization (CPSO) is proposed only the antenna element used variable. By combining characteristic fast convergence PSO ergodic feature algorithm, disadvantage that easy to fall into local optimum when dealing with high-dimensional complex...
A novel frequency selective structure (FSS) based on folded square slot resonators with high selectivity and good angular stability is proposed in this paper. The miniaturized FSS unit cell achieved by coupling flexural resonators. Hence, the performance of especially can be improved. What’s more, introduction symmetrical every layer promotes to exhibit for RCP LCP polarizations. In addition, designing different parts top bottom layers, two transmission zeros are generated near upper...