A5053929271- Luminescence Properties of Advanced Materials
- Spectroscopy and Chemometric Analyses
- stochastic dynamics and bifurcation
- Advanced Chemical Sensor Technologies
- Nonlinear Dynamics and Pattern Formation
- Gamma-ray bursts and supernovae
- Gas Sensing Nanomaterials and Sensors
- Spectroscopy Techniques in Biomedical and Chemical Research
- Nonlinear Waves and Solitons
- Heat Transfer and Boiling Studies
- Random lasers and scattering media
- Quantum optics and atomic interactions
- Petroleum Processing and Analysis
- Electronic and Structural Properties of Oxides
- Blind Source Separation Techniques
- Nonlinear Photonic Systems
- Industrial Technology and Control Systems
- Astro and Planetary Science
- Geomechanics and Mining Engineering
- bioluminescence and chemiluminescence research
- Process Optimization and Integration
- Traditional Chinese Medicine Analysis
- Mechanical Failure Analysis and Simulation
- Perovskite Materials and Applications
- Fault Detection and Control Systems
Changchun Institute of Optics, Fine Mechanics and Physics
2022-2024
Chinese Academy of Sciences
2022-2024
University of Chinese Academy of Sciences
2022-2024
Changchun University of Science and Technology
2023-2024
Guangdong University of Education
2008-2022
Guangdong University Of Finances and Economics
2014-2022
Zhejiang A & F University
2020
China University of Petroleum, Beijing
2016-2018
University of Education, Winneba
2013-2014
China Jiliang University
2008-2010
Broadband near-infrared (NIR) phosphor-converted light-emitting diodes (pc-LEDs) are essential to integrate spectrometers into mobile devices for the rapid and noninvasive detection of biological components. However, efficient broadband NIR phosphors with a peak emission wavelength longer than 800 nm deficient. In this study, CaMgGe2O6:Cr3+ phosphor was prepared by high-temperature solid-state reaction. The doped 0.02Cr3+ showed an band at 845 broad bandwidth 160 high quantum yield 84% under...
Abstract Mn 4+ ‐activated CaAl 12 O 19 (CAO: ) is recognized as a promising candidate for red phosphor used in wide color gamut displays. However, the spontaneous self‐reduction of to 2+ occurs charge compensation through ‐Mn substitution Al 3+ ‐Al , lowering quantum efficiency . To suppress self‐reduction, some divalent metal ions, including Ba Sr Cd Zn and Mg are added instead but only small luminescence enhancement observed. In this paper, remarkable CAO: via co‐doping Be reported. The...
Employing two samples containing of 56 and 59 well-separated FRED (fast rise exponential decay) gamma-ray burst (GRB) pulses whose spectra are fitted by the Band spectrum Compton model, respectively, we have investigated evolutionary slope $E_{p}$ (where is peak energy in $\nu F\nu$ spectrum) with time during pulse decay phase. The bursts were observed Burst Transient Source Experiment (BATSE) on Gamma-Ray Observatory. We first test phase predicted Lu et al. (2007) based model highly...
In this paper we have analyzed the temporal and spectral behavior of 52 Fast Rise Exponential Decay (FRED) pulses in 48 long-duration gamma-ray bursts (GRBs) observed by CGRO/BATSE, using a pulse model with two shape parameters Band three parameters, respectively. It is found that these FRED are distinguished both temporally spectrally from those long-lag pulses. Different only one parameter pair indicates an evident correlation among five which suggests at least $\sim$4 needed to burst...
Predicting future stand yield as a function of current conditions is important to forest managers. Two machine-learning techniques, gradient boosting (GB) and random forests (RF), were used predict mean height dominant codominant trees (HT), per hectare (Tree·ha −1 ), basal area (BA·ha ) based on data sets collected from extensively intensively managed loblolly pine (Pinus taeda L.) plantations in the West Gulf Coastal Plain region. Models evaluated using coefficient determination (R 2 bias...
Two bistable systems can become multistable through nonlinear coupling. The coupled system is more valuable than the single in theoretical research and practical application. response characteristics of subjecting to noise periodic signal have been analytically analyzed show effect coefficient parameters on stochastic resonance. results that resonance produced by zonal double-well potential. schematic diagram feedback control principle has also constructed. method gives a reliable basis for...
According to the characteristic structure of double wells in bistable systems, this paper analyses stochastic fluctuations single potential well and probability transitions between two proposes a method controlling resonance by using periodic signal. Results theoretical analysis numerical simulation show that phenomenon happens when time scales signal noise-induced achieve synchronization. By adding system with controllable signal, can be effectively controlled, thus affecting wells. In way,...
A feedback method is proposed to control the stochastic resonance by feeding back output of bistable system input re-act on system. In a typical system， signal-to-noise ratio and spectral power amplification are considered as observable variables evaluate effect. The phenomenon caused linear or nonlinear functions studied respectively. theoretical analysis numerical simulation show that controllable， this especially suitable which parameters fixed difficult vary.
单源多汇、多源单汇或多源多 汇), 抑或功能(编制调度计划或优化调度计划), 他们 的模型和算法中均未考虑温度的影响, 只将混油段
Summary The settling process of water droplets is significant in the processing technology crude water-in-oil (W/O) emulsion. complex because it affected by various microforces on droplets, which leads to difficulty studying this issue comprehensively. A large amount related work has been conducted, but with sparse emphasis being placed influence Brownian motion and heterogeneous system This paper presents a method study effect static W/O model for calculating water-droplet displacement...
Two single bistable systems were constituted into a coupling system by means of nonlinear coupling. One the was considered as controlled with fixed parameters, and other control adjustable parameters. Adjusting coefficients parameters can produce stochastic resonance. With single-frequency signal added to system, changing frequency Due effect coupling, resonance will affect dual-resonance phenomenon happens in coupled which realizes usage one influence another make more intense. This also...
Stochastic fluctuations in the single potential well and probability transitions between two wells exist bistable system under action of noise. These kinds movements different hierarchies have time scales, low hierarchy effects on high wells. When scale first input periodical signal noise-induced achieves stochastic synchronization, phenomenon resonance happens. second driven periodic signal, scales which matches that intrawell fluctuations, is introduced into system, frequency absorption...
Abstract This paper aims to determine the lowest pigging frequency and reduce costs of in CBM field gas pipeline system, by simulating movement water condensation dendritic gathering transportation pipelines considering hydraulic thermal character. The content as a function time distribution liquid accumulated along flow line have been simulated. As result, optimized operation schemes proposed. Numerical model was established influence temperature, pressure terrain on saturated content....
The disconnect between the optimization systems of upstream production and downstream demand poses a legitimate problem for China’s refined oil industry in terms overproduction waste. Established methods only partially model refinery system are unable to integrate detailed plans or meet market demands. Therefore, research on scheduling combined with pipeline network has very real applications that not reduce consumption human/material resources, but also increase economic efficiency. This...