A5003556629- Astrophysics and Star Formation Studies
- Stellar, planetary, and galactic studies
- Molecular Spectroscopy and Structure
- Astronomical Observations and Instrumentation
- Astronomy and Astrophysical Research
- Geophysics and Gravity Measurements
- Astrophysics and Cosmic Phenomena
- Organic Electronics and Photovoltaics
- Galaxies: Formation, Evolution, Phenomena
- Atmospheric Ozone and Climate
- Astrophysical Phenomena and Observations
- Conducting polymers and applications
- Perovskite Materials and Applications
- Radio Astronomy Observations and Technology
- GNSS positioning and interference
- Gamma-ray bursts and supernovae
- Statistical and numerical algorithms
- Thin-Film Transistor Technologies
- Ionosphere and magnetosphere dynamics
- Spectroscopy and Laser Applications
- Astro and Planetary Science
- Photopolymerization techniques and applications
- Fluid Dynamics and Thin Films
- Plasma Diagnostics and Applications
- Superconducting and THz Device Technology
National Time Service Center
2017-2025
Chinese Academy of Sciences
2015-2025
University of Chinese Academy of Sciences
2014-2025
Ningbo No. 2 Hospital
2025
Chinese PLA General Hospital
2024
Jiangsu University
2024
Xuzhou Cancer Hospital
2024
Qingdao Institute of Bioenergy and Bioprocess Technology
2021-2023
Jiangsu Cancer Hospital
2023
Nanjing Medical University
2023
Over 100 trigonometric parallaxes and proper motions for masers associated with young, high-mass stars have been measured the Bar Spiral Structure Legacy Survey, a Very Long Baseline Array key science project, European VLBI Network, Japanese Exploration of Radio Astrometry project. These measurements provide strong evidence existence spiral arms in Milky Way, accurately locating many arm segments yielding pitch angles ranging from about 7° to 20°. The widths increase distance Galactic...
We report measurements of parallaxes and proper motions ten high-mass star-forming regions in the Sagittarius spiral arm Milky Way as part BeSSeL Survey with VLBA. Combining these results eight others from literature, we investigated structure kinematics between Galactocentric azimuth around -2 65 deg. found that pitch angle is 7.3 +- 1.5 deg; arm's half-width, defined rms deviation fitted spiral, 0.2 kpc; nearest portion 1.4 kpc Sun. Unlike for adjacent arms, no evidence significant...
The good planarity and small steric hindrance of PBB1-Cl can enhance the intermolecular overlapping fasten packing in active layer to improve photovoltaic performance, mechanical thermal stability OSCs.
We present the first astrometry catalog from Japanese VLBI (very long baseline interferometer) project VERA (VLBI Exploration of Radio Astrometry). have compiled all results VERA, providing accurate trigonometric annual parallax and proper motion measurements. In total, 99 maser sources are listed in catalog. Among them, 21 newly reported while rest 78 referred to previously published or those preparation for forthcoming papers. The accuracy revisited compared with other projects such as...
Abstract Thanks to the development of acceptor–donor–acceptor (A–D–A) type electron acceptors, organic solar cells (OSCs) have achieved marvelous progress in recent years. However, a systematic investigation about structure–efficiency relationship is still highly desired better understand working mechanisms inside bulk heterojunction (BHJ). In this study, new acceptors with synergistic effect side chain and unilateral π‐bridge strategy are designed, accounting for lower energy loss, expanded...
Control of the preferred vertical phase distribution components in photoactive layer is vital importance to improve device performance and stability organic photovoltaics (OPVs). Herein, a universal sequential-deposition strategy demonstrated realize optimal by employing orthogonal solvents synergistically integrating ternary/quaternary compositions consisting insulating heat-resistant poly(aryl ether)s as third/fourth component layer. The selective segregation middle active enhances...
Abstract Predicting Earth Orientation Parameters (EOP) is crucial for precise positioning and navigation both on the Earth’s surface in space. In recent years, many approaches have been developed to forecast EOP, incorporating observed EOP as well information effective angular momentum (EAM) derived from numerical models of atmosphere, oceans, land-surface dynamics. The Second Prediction Comparison Campaign (2nd PCC) aimed comprehensively evaluate forecasts international participants...
We report measurements of trigonometric parallaxes for six high-mass star-forming regions in the Scutum spiral arm Milky Way as part BeSSeL Survey. Combining our with 10 previous from Survey yields a total sample 16 sources Galactic longitude range 5° to 32°. Assuming logarithmic model, we estimate pitch angle 198 ± 31 arm, which is larger than angles reported other arms. The high may be due arm's proximity bar. show an average peculiar motion 4 km s−1 slower rotation and 8 toward center....
We conducted VLA C-configuration observations to measure positions and luminosities of Galactic Class II 6.7 GHz methanol masers their associated ultra-compact H regions. The spectral resolution was 3.90625 kHz the continuum sensitivity reached 45 \uJypb. mapped 372 with peak flux densities more than 2 Jy selected from literature, 367 them were detected. Absolute have nominal uncertainties 0.3 arcsec. In this first paper on data analysis, we present three catalogs, gives information...
As part of the BeSSeL Survey, we report trigonometric parallaxes and proper motions molecular maser sources associated with 13 distant high mass star forming regions in Sagittarius spiral arm Milky Way. In particular, obtain improved parallax distance estimates for three well studied regions: 1.9 +0.1/-0.1 kpc M17, 5.3 +1.3/-0.9 W51, 7.9 +0.9/-0.7 GAL 045.5+00.0. Peculiar all but one source are less than 20 km/s. We fit a log-periodic to locations estimate an average pitch angle 7.2+-1.9...
We present the results of a survey radio continuum sources near Galactic plane using Very Long Baseline Array (VLBA). Our observations are designed to identify compact extragalactic milliarcsecond size that can be used for parallax measurements in Bar and Spiral Structure Legacy Survey. selected point from NVSS CORNISH catalogs with flux densities above 30 mJy within $1.5\degr$ known maser targets. Of 1529 observed, 199 were detected. For detected on 3 or more baselines, we determined...
Abstract The detection of clumps (cores) in molecular clouds is an important issue sub-millimetre astronomy. However, the completeness identification and accuracy returned parameters automated clump algorithms are still not clear. In this work, we test performance bias GaussClumps, ClumpFind, FellWalker, Reinhold, Dendrograms identifying simulated clumps. By designing with various sizes, peak brightness, crowdedness, investigate characteristics their performance. aspect completeness,...
Abstract Growing interest in Earth Orientation Parameters (EOP) resulted various approaches to the EOP prediction algorithms, as well exploitation of distinct input data, including observed values from operational data centers and modeled effective angular momentum functions. Considering these developments recently emerged new methodologies, Second Prediction Comparison Campaign (2nd PCC) was pursued 2021–2022. The campaign led by Centrum Badań Kosmicznych Polskiej Akademii Nauk cooperation...
Given that effective angular momentum (EAM) data demonstrate a strong correlation with length of day (LOD) and are extensively utilized in the prediction universal time (UT1), this research integrated EAM into design Kalman filter. At solution combination level, UT1, LOD, were merged to derive UT1/LOD sequence featuring higher accuracy enhanced continuity. To begin with, comprehensive evaluation three datasets was conducted identify systematic biases periodic components LOD. Subsequently,...
The morphology and kinematics of the spiral structure Milky Way are long-standing problems in astrophysics. In this review we firstly summarize various methods with different tracers used to solve puzzle. astrometry Galactic sources is gradually alleviating difficult situation caused mainly by large distance uncertainties, as can currently obtain accurate parallaxes (a few μas) proper motions (≈1 km s−1) using Very Long Baseline Interferometry (VLBI). On other hand, Gaia mission providing...
Abstract In 2019 September, a sudden flare of the 6.7 GHz methanol maser was observed toward high-mass young stellar object (HMYSO) G24.33+0.14. This may represent fourth detection transient mass accretion event in an HMYSO after S255IR NIRS3, NGC 6334I-MM1, and G358.93−0.03-MM1. G24.33+0.14 is unique among these sources as it clearly shows repeating with 8 yr interval. Using Atacama Large Millimeter/submillimeter Array (ALMA), we millimeter continuum molecular lines pre-flare phase 2016...
Sulfatase 2 (SULF2) affects the occurrence and development of cancer by regulating HSPG-binding factors. However, mechanism SULF2 in bladder (BCa) is unknown. To determine this, we analyzed RNA sequencing 90 patients with BCa. The results showed that expression was closely related to prognosis Moreover, vivo vitro experiments revealed promotes tumor proliferation invasion. Furthermore, using a mouse orthotopic BCa model flow cytometric analysis, identified polarization macrophages. Mechanism...
Single point observations are presented in NH3 (1,1) and (2,2) inversion transitions using the Effelsberg 100 m telescope for a sample of 6.7 GHz methanol masers mapping 12CO 13CO (1-0) PMO Delingha 13.7 82 sources with detected ammonia. A further 62 were selected either or line outflow identification, producing 45 candidates, 29 16 data. Twenty-two candidates newly identified, 23 had trigonometric parallax distances. Physical properties derived from ammonia lines CO parameters calculated....
To investigate whether distinctions exist between low- and high-luminosity Class ii 6.7 GHz methanol masers, we have undertaken multi-line mapping observations of various molecular lines, including the NH3 (1,1), (2,2), (3,3), (4,4), 12CO (1–0) transitions, toward a sample nine low-luminosity masers eight for which already had spectral line data. Emission in (3,3) transitions was detected out maser sources, 14 cores were identified. We derive densities, column temperatures, core sizes,...
Abstract Using the Very Long Baseline Array, we measured trigonometric parallax and proper motions toward a 6.7 GHz methanol maser in distant high-mass star-forming region G027.22+0.14. The distance of this source is determined to be <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:msubsup> <mml:mrow> <mml:mn>6.3</mml:mn> </mml:mrow> <mml:mo>−</mml:mo> <mml:mn>0.5</mml:mn> <mml:mo>+</mml:mo> <mml:mn>0.6</mml:mn> </mml:msubsup> </mml:math> kpc. Combining its...
Abstract We have measured trigonometric parallaxes for four H 2 O masers associated with distant massive young stars in the inner regions of Galaxy using Very Long Baseline Array as part BeSSeL Survey. G026.50 + 0.28 is located at near end Galactic bar, perhaps origin Norma spiral arm. G020.77−0.05 Center region and likely a far-side extension Scutum G019.60−0.23 G020.08−0.13 are lie well past Center. These sources appear to be Sagittarius arm, but an association Perseus arm cannot ruled out.
Side-chain engineering has been acknowledged as an ingenious method to regulate material crystallinity, miscibility and microstructure achieve favorable photovoltaic performance.