A5086768659- Astrophysical Phenomena and Observations
- Astrophysics and Cosmic Phenomena
- Gamma-ray bursts and supernovae
- Astronomical Observations and Instrumentation
- Organic Light-Emitting Diodes Research
- Organic Electronics and Photovoltaics
- Stellar, planetary, and galactic studies
- Luminescence and Fluorescent Materials
- Conducting polymers and applications
- Astronomy and Astrophysical Research
- Pulsars and Gravitational Waves Research
- Galaxies: Formation, Evolution, Phenomena
- Astrophysics and Star Formation Studies
- Advanced Thermodynamics and Statistical Mechanics
- Radiation Detection and Scintillator Technologies
- Advanced Thermoelectric Materials and Devices
- Luminescence Properties of Advanced Materials
- Radio Astronomy Observations and Technology
- Particle Accelerators and Free-Electron Lasers
- Geophysics and Gravity Measurements
- Particle Detector Development and Performance
- Lanthanide and Transition Metal Complexes
- Advanced Thermodynamic Systems and Engines
- Perovskite Materials and Applications
- Building energy efficiency and sustainability
Changzhou University
2025
George Washington University
2020-2024
Compact Imaging (United States)
2023
Southwestern Institute of Physics
2022
City University of Hong Kong
2014-2022
Huaiyin Normal University
2022
University of Chinese Academy of Sciences
2018-2022
Institute of Coal Chemistry
2022
Minzu University of China
2015-2022
Qingdao University
2010-2021
Six homoleptic Ir(III) complexes bearing imidazo[4,5-b]pyrazin-2-ylidene chelates were successfully designed and synthesized. Narrowband blue emission (λmax = 466-485 nm) broadened green 518-532 in degassed toluene solution with high photoluminescent quantum yields the range of 75-81 45-48% observed for f-timpz, t2impz, t2empz as well m-timpz, t2empz, respectively. In addition, tert-butylphenyl cyclometalate is more electron donating than N-phenyl and, hence, all tert-butylphenyl-substituted...
The rapid increase in serendipitous X-ray source detections requires the development of novel approaches to efficiently explore nature sources. If even a fraction these sources could be reliably classified, it would enable population studies for various astrophysical types on much larger scale than currently possible. Classification large numbers from multiple classes characterized by properties (features) must done automatically and supervised machine learning (ML) seems provide only...
view Abstract Citations (82) References (55) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Violent Interstellar Medium of NGC 604 Yang, Hui ; Chu, You-Hua Skillman, Evan D. Terlevich, Roberto is the most luminous H II region in M33. As second nearest giant region, it can be observed great detail over its entire extent. We have obtained high-resolution interference filter CCD images at six wavelengths to study distributions ionized gas and massive stars,...
Mechanochromic luminescence, thermally activated delayed fluorescence, aggregation-induced emission, and electroluminescence properties are combined in a single organic molecule, 2-(carbazol-9-yl)-anthraquinone (Cz-AQ).
Digital inclusion can bridge the digital divide and reduce social exclusion of older adults, yet it is understudied in China. This research examined factors influencing adults China relationship between quality life. Data collected from 312 people ( M = 69.6 years old) Nanjing were included a multinomial logit model to tackle these questions. Their attitudes toward technology most significant factor predicting their inclusion. Other party affiliation, living situation, personal average...
We report on the identification of a new {\gamma}-ray-emitting narrow-line Seyfert 1 (NLS1) galaxy, SDSS J211852.96-073227.5 (hereinafter J2118-0732). The at redshift 0.26, is associated with radio source flat/inverted spectrum high frequencies. analysis its optical obtained in Sloan Digital Sky Survey (SDSS) revealed small linewidth broad component H{\beta} line (full width half-maximum = 1585 km s^{-1}), making it radio-loud NLS1 galaxy -- an intriguing class active galactic nuclei...
Intelligent decision-making in dynamic recommender systems is crucial for capturing temporal user preferences and optimizing long-term satisfaction. Traditional often rely on static modeling, neglecting the dynamics of user-item interactions. To address this limitation, we propose a novel framework, Temporal Interpretability Graph Neural Network with Reinforcement Learning (TIGNN-RL), which integrates graph neural networks (DGNNs) Proximal Policy Optimization (PPO) to optimize personalized...
We present synthesis radio continuum observations of the nearby irregular galaxy IC 10. These observations, at λ6, λ20, and λ49 cm, allow us to measure flux spectral index a number resolved sources in While most these are easily identified as thermal emission from H II regions few nonthermal background sources, one extended, source appears be superbubble Its large size ( >= 250 pc) implies that it is likely product several supernovae. Comparisons with Hα, I, optical imaging reveal associated...
Abstract In the latest data release from Fermi Gamma-ray Space Telescope (the 4th LAT 14 yr Catalog, or 4FGL), more than 50% of Galactic sources are yet to be identified. We observed 13 unidentified with Chandra X-Ray Observatory explore their nature. report results classification X-ray in fields these γ -ray and discuss implications for use multiwavelength (MW) a machine-learning classification, accompanied by detailed spectral/variability analysis brighter sources. Eight 4FGL have pulsars...
A series of ternary dinuclear europium(iii) complexes [Eu2(2,7-BTFDBC)3-n(DBM)2n(Phen)2] (n = 0, 1, or 2) were synthesized by using 2,7-bis(4'4'4'-trifluoro-1,3-dioxobutyl)-(9-ethyl-9H-carbazole) (2,7-BTFDBC), dibenzoylmethane (DBM), 1,10-phenanthroline (Phen) and ions. All these display a broad excitation band in the blue region high intensity emission with colour purity. The significantly increases increase DBM 2). theoretical predictions molecular geometry electronic absorption spectrum...
Abstract A large fraction of Fermi-Large Area Telescope (LAT) sources in the fourth Fermi-LAT 14 yr catalog (4FGL) still remain unidentified (unIDed). We continued to improve our machine-learning pipeline and used it classify 1206 X-ray with signal-to-noise ratios >3 located within extent 73 unIDed 4FGL Chandra Observatory observations included Source Catalog 2.0. Recent improvements include astrometric corrections, probabilistic cross-matching lower-frequency counterparts, a more...
Abstract The γ -ray narrow-line Seyfert 1 (NLS1) galaxies can be considered to the third class of active galactic nuclei possessing relativistic jets. In this paper, we present multi-band high-resolution Very Long Baseline Array (VLBA) images NLS1, SDSS J211852.96-073227.5 (J2118-0732, z = 0.26). We find a core-jet radio morphology and significant flux density variations in core. high brightness temperature estimated from VLBA core variability demonstrate that it exhibits substantial beaming...
Abstract Open clusters are thought to be the birthplace of most stars in galaxy. Thus, they excellent laboratories for investigating stellar evolution, and X-ray properties various types (including binary stars, evolved compact objects). In this work, we investigate population sources nearby 300 Myr old open cluster NGC 3532 using Chandra Observatory multiwavelength data from several surveys. We apply a random-forest machine-learning pipeline (MUWCLASS) classify all confidently detected...
Abstract We present a simple but informative online tool to visualize the multiwavelength (MW) properties of ≈2700 X-ray sources from Chandra Source Catalog version 2.0 with literature verified classifications. Here we describe catalogs that used collect classifications and extract MW these sources, themselves. also design functionality tool.
In recent years, green libraries are springing up in many Chinese universities.The library is an energy-efficient type of that provides excellent reading environment.The library's energy efficiency relies on the careful design natural and artificial lighting, illumination uniformity as well heating efficiency.Therefore, this paper attempts to laid down make Hebei Agricultural University Library a library.Specifically, comprehensive consumption space was evaluated through dynamic static...
Compact objects and supernova remnants provide nearby laboratories to probe the fate of stars after they die, way impact, are impacted by, their surrounding medium. The past five decades have significantly advanced our understanding these objects, showed that most relevant some mysterious energetic events in distant Universe, including Fast Radio Bursts Gravitational Wave sources. However, many questions remain be answered. These include: What powers diversity explosive phenomena across...
We present a collection of $\sim10,000$ X-ray sources from the 4th XMM-Newton Serendipitous Source Catalog (4XMM-DR13) with literature-verified classifications and multi-wavelength (MW) counterparts. describe process by which MW properties are obtained an interactive online visualization tool we developed.
Abstract We present a collection of ∼10,000 X-ray sources from the 4th XMM-Newton Serendipitous Source Catalog (4XMM-DR13) with literature-verified classifications and multi-wavelength (MW) counterparts. describe process by which MW properties are obtained an interactive online visualization tool we developed.
Determining the surface structure and morphology under working conditions is essential to obtain facet-dependent catalytic performance.
Abstract We obtained a 108 ks Chandra X-ray Observatory (CXO) observation of PSR J1849-0001 and its pulsar wind nebula (PWN) coincident with the TeV source HESS J1849-000. By analyzing new old (archival) CXO data, we resolved from PWN, explored PWN morphology on arcsecond arcminute scales, measured spectra different regions PWN. Both compact inner are hard power-law photon indices 1.20 ± 0.07 1.49 0.20, respectively. The jet-dominated has relatively low luminosity, lack γ -ray pulsations,...