A5100324001- Orbital Angular Momentum in Optics
- Advanced Fiber Laser Technologies
- Advanced Fiber Optic Sensors
- Photonic and Optical Devices
- Bamboo properties and applications
- Advanced Surface Polishing Techniques
- Natural Fiber Reinforced Composites
- Advanced Measurement and Metrology Techniques
- Quantum Information and Cryptography
- Laser-induced spectroscopy and plasma
- Microwave Engineering and Waveguides
- COVID-19 epidemiological studies
- Biosensors and Analytical Detection
- Laser-Matter Interactions and Applications
- Target Tracking and Data Fusion in Sensor Networks
- Adaptive optics and wavefront sensing
- Mechanical and Optical Resonators
- Adolescent Sexual and Reproductive Health
- Optical Systems and Laser Technology
- Thermochemical Biomass Conversion Processes
- Mathematical and Theoretical Epidemiology and Ecology Models
- Laser-Plasma Interactions and Diagnostics
- Magnetic Bearings and Levitation Dynamics
- Transportation Safety and Impact Analysis
- Industrial Gas Emission Control
Harbin Engineering University
2017-2025
Suqian University
2022-2025
China Academy of Space Technology
2024
East China Normal University
2023-2024
National University of Singapore
2020-2022
China Power Engineering Consulting Group (China)
2021
Tsinghua University
2004-2020
North China Electric Power University
2016-2020
Lanzhou University
2019
Hunan University
2019
Bamboo fibers demonstrate enormous potential as the reinforcement phase in composite materials. In this study, order to find suitable NaOH concentration for bamboo fiber treatment, were treated with 2 wt.%, 6 wt.% and 10 solutions 12 h, respectively. We determined that optimal fabrication of composites by single tensile test, pull-out Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM). The short length well dispersed epoxy matrix a new preparation method....
Because of the spread Omicron variant, many countries have experienced COVID-19 case numbers unseen since start pandemic. We aimed to compare epidemiological characteristics with previous variants and different strains influenza provide context for public health responses.We developed transmission models SARS-CoV-2 influenza, in which transmission, death, vaccination rates were taken be time-varying. fit our model based on publicly available data South Africa, United States, Canada. used...
Micro-pumps are widely used in biomedical equipment such as flow cytometry. In micro-flow systems, pumps usually the main tool and means to control rate of liquid. Controlling particle movement is always a difficult problem mixed fluid liquid particles. this paper, we propose new type photodynamic pump based on annular-core hollow-center fiber. The laser coupled into annular core by fused tapering optical fiber welding at cone point. A femtosecond processing system process microscopic holes...
In this study, bamboo fiber bundles were directly extracted from raw material to fabricate reconstituted using the traditional hot-pressing method. The tensile behaviors and failure mechanisms of both bundle its scrimber under various strain rates (quasi-static, 350/s, 950/s 1700/s) investigated by SHTB system (split-Hopkinson bar, high-speed camera digital image correlation method). results showed that exhibited an obvious positive rate effect. ultimate strength at a 1700/s was close 200...
We formulate a compartmental model considering behavioral changes of susceptible individuals due to fear assess the transmission dynamics HIV/AIDS in mainland China. Stability and uniform persistence are analyzed. Markov chain Monte Carlo simulations Latin hypercube sampling used estimate basic reproduction number its sensitivity parameter variations. The estimated mean is 1.2138 (95% CI 1.0834-1.3442). numbers aware high-risk [Formula: see text] text]-[Formula: text]) 1.0834-1.3442),...
A new type of Mach-Zehnder interferometer (MZI) is proposed to measure twist and temperature. The sensor contains a pretwisted taper ball. made by pretwisted, then, thermally tapering along single-mode fiber, induce permanent spiral distortion in the fiber. experimental results indicate that has higher sensitivity. Twisting for counterclockwise clockwise direction, sensitivities Dip 1584 nm are -0.378 0.083 nm/(rad/m), respectively, 1685 -0.117 0.089 respectively. Meanwhile, direction can be...
The coaxial ridged disk-loaded structure which is a new periodic system presented and analyzed in this paper. As an all-metal slow-wave circuit, it has properties that can be used high-power traveling wave tubes (TWT) relativistic TWTs. dispersion equation coupling impedance of the are investigated first part results numerical calculations relation with different dimensions indicate interaction higher than without ridges most frequency ranges. In second part, "hot" circuit annular electron...
As a type of environmentally-friendly and low-cost natural material, bamboo fibers exhibit excellent mechanical properties. In this study, fiber reinforced polybenzoxazine composite was fabricated by an improved hot-pressing process. The dynamic compressive behaviors neat benzoxazine its were comparatively studied SHPB (split Hopkinson pressure bar) apparatus. tests showed that the matrix exhibited significantly positive strain rate sensitivity at nominal rates in range 0.006–2500/s. During...
In this study, chopped natural bamboo fibers were successfully added in the benzoxazine matrix by hot-pressing method to fabricate environmentally friendly bio-composite. The mechanical behaviors and failure mechanisms of neat its fiber composite under different tensile strain rates (quasi-static, 35/s 110/s) comparatively investigated using SHTB device (split-Hopkinson bar), high-speed camera, DIC (digital image correlation), SEM observation (scanning electron microscopy). results showed...
Coal slime, coal slime/CaO, and slime/CaO/pine sawdust were formed to make briquettes respectively. The effects of pine on the SO2 retention by CaO during slime briquette combustion studied using a tube furnace. obtained results demonstrated that porous structures created in residue case addition, more sulfur product, CaSO4, was both outer inner residue. In increasing temperatures had negative impact reduction. experiments, efficiency achieved 48.3% when biomass added at 850°C. It indicated...
Mercury (Hg) emissions from coal-fired power plants are of increasing concern around the world. In this study, field tests were carried out to understand Hg emission characteristics and its migration behaviors in a commercial CFB boiler unit with electricity generation capacity 25 MW. This is equipped one electrostatic precipitator (ESP) two fabric filters (FFs) series for removing particulates flue gas. The EPA 30B method was used simultaneous gas sampling at inlet ESP outlet second FF....
The wavefront of the output high power laser beam generated by a MOPA system with slab gain medium was measured and analyzed an H-S sensor, consisted static aberration whole optic chain dynamic component caused driver. Analyzing results showed that temporal frequency mostly less than 10Hz, but spatial distribution more challengeable to phase compensation. Due narrow rectangle shape none uniformity pumping cooling, it had some local big slope cross section, lot difficulties measuring...
A new kind of hollow beams, double half-Gaussian was put forward. With the help Collins formula, analytical equation propagation and transformation laser beams in free space deduced. The simulation shows that intensity exhibits three-dimensional trap distribution near-field, while turn into solid when propagating a certain distance, which characteristics self-focus. were obtained by means dual-reflecting splitting optical system. vertical loop different distances tested, is agreement with result.
Abstract Entanglement is one of the most essential resources for quantum information. In addition to increasing scale entanglement, improving its flexibility also vital importance practical applications. this article, a continuous‐variable (CV) entanglement six orbital angular momentum (OAM) modes whose topological charges can be flexibly reconfigured experimentally generated. particular, sets CV hexapartite OAM are obtained with their reconfigurable. The scheme enables redistribution...