A5015007438- Astrophysics and Star Formation Studies
- Stellar, planetary, and galactic studies
- Atmospheric Ozone and Climate
- Molecular Spectroscopy and Structure
- Galaxies: Formation, Evolution, Phenomena
- Spectroscopy and Laser Applications
- Astronomical Observations and Instrumentation
- Astro and Planetary Science
- Astronomy and Astrophysical Research
- Astrophysics and Cosmic Phenomena
- Astrophysical Phenomena and Observations
- Hydraulic Fracturing and Reservoir Analysis
- Radio Astronomy Observations and Technology
- Phase Equilibria and Thermodynamics
- Cancer-related molecular mechanisms research
- Superconducting and THz Device Technology
- Drilling and Well Engineering
- Gamma-ray bursts and supernovae
- GNSS positioning and interference
- Hepatocellular Carcinoma Treatment and Prognosis
- Atmospheric chemistry and aerosols
- Pulsars and Gravitational Waves Research
- Pancreatic and Hepatic Oncology Research
- Atomic and Molecular Physics
- RNA modifications and cancer
Xinjiang Astronomical Observatory
2015-2025
Chinese Academy of Sciences
2015-2025
University of Chinese Academy of Sciences
2010-2025
Nanchang University
2025
Max Planck Institute for Radio Astronomy
2021-2024
Dalian University of Technology
2024
Jianghan University
2024
Wuhan Pulmonary Hospital
2023-2024
Meizhou City People's Hospital
2023
Nanjing Forestry University
2022
Massive star-forming regions with observed infall motions are good sites for studying the birth of massive stars. In this paper, 405 compact sources have been extracted from APEX Telescope Large Area Survey Galaxy (ATLASGAL) that also in Millimetre Astronomy Legacy Team 90 GHz (MALT90) survey during Years 1 and 2. These observations complemented Spitzer GLIMPSE/MIPSGAL mid-IR data to help classify elected clumps into three evolutionary stages: pre-stellar, proto-stellar UCHII regions. The...
To summarize the nursing experience of a three-stage liver resection combined with ALPPS (associating partition and portal vein ligation for staged hepatectomy) intraoperative isolated perfusion chemotherapy patient at tertiary hospital in Shenzhen, China, order to provide insights treatment such cases future. This operation was conducted first time globally, presenting significant challenges no prior reference. Through evidence-based thinking literature review, preoperative...
Abstract We conducted an ammonia survey targeting 217 sources from the BGPS v1.0 using Nanshan 26 m radio telescope, focusing on $\rm NH_3$(1,1) and (2,2) lines, selecting based criteria that their 1.1 mm fluxes are greater than 5 Jy they observable with telescope at Xinjiang Astronomical Observatory. successfully detected 188 (86.6%) of our sources. These span a galactic longitude range 1.2○ to 192.6○ reside in local, Perseus, Saggitarius-Carina, Scutum-Centaurus Norma spiral arms between...
Abstract Cuproptosis plays an important role in cancer, but its lung cancer remains unknown. Transcriptional profiles, clinical details and mutation data were acquired from the Cancer Genome Atlas database through a variety of methods. The analysis this publicly available was comprehensively performed using R software along with relevant packages, ensuring thorough examination information. In study, we conducted detailed cuproptosis‐related genes lncRNA co‐expression, identifying 129 lncRNAs...
In this work, we aim to characterize high-mass clumps with infall motions. We selected 327 from the Millimetre Astronomy Legacy Team 90-GHz survey, and identified 100 candidates. Combined results of He et al., obtained a sample 732 clumps, including 231 massive candidates 501 where is not detected. Objects in our were classified as pre-stellar, proto-stellar, H ii or photodissociation region (PDR). The detection rates PDR stages are 41.2 per cent, 36.6 30.6 cent 12.7 respectively. have...
Aims. To increase the observational samples of star formation around expanding Hii regions, we analyzed interstellar medium and N22. Methods. We used data extracted from seven large-scale surveys infrared to radio wavelengths. In addition JCMT observations J = 3-2 line 12CO emission released on CADC 2-1 =3-2 lines observed by KOSMA 3 m telescope. performed a multiwavelength study bubble Results. A molecular shell composed several clumps agrees very well with border N22, suggesting that its...
Aims. The process of gravitational fragmentation in the L1482 molecular filament California cloud is studied by combining several complementary observations and physical estimates. We investigate kinematic dynamical states this properties dozens dense clumps embedded therein. Methods. present compare line emission J=2--1 J=3--2 transitions 12CO complex, using KOSMA 3-meter telescope. These are complemented with archival data analyses 13CO J=1--0 obtained at Purple Mountain Observatory...
An unbiased search of molecular outflows within the region COHRS survey has identified 157 high-mass from a sample 770 ATLASGAL clumps with detection rate 20\%. The increases for higher M$_{clump}$, L$_{bol}$, L$_{bol}$/M$_{clump}$, N$_{H_{2}}$, and T$_{dust}$ compared to no outflow. rates outflow protostellar (8\%) YSO clump (17\%) MSF (29\%). 26\% quiescent is preliminary, because small. A statistical relation between masses our $\log(M_{out}/M_{\bigodot}) = (-1.1\pm0.21) +...
We studied the hub filament system G323.46-0.08 based on archival molecular line data from SEDIGISM 13CO survey and infrared GLIMPSE, MIPS, Hi-GAL surveys. consists of three filaments, F-north, F-west, F-south, that converge toward central high_mass clump AGAL 323.459-0.079. F-west Part 1 F-south show clear large-scale velocity gradients 0.28 0.44 km s-1 pc-1, respectively. They seem to be channeling materials into The minimum accretion rate was estimated 1216 M Myr-1. A characteristic...
Recent observations suggest a scenario in which filamentary structures the ISM represent first step towards clumps/cores and eventually star formation. The densest filaments would then fragment into prestellar cores owing to gravitational instability. We seek understand roles play high-mass mapped integral-shaped filament (ISF) NH3 (1, 1) (2, 2). whole structure is uniformly fully sampled. find that morphology revealed by map of velocity-integrated intensity line closely associated with dust...
Aims. We seek to understand how the 4.8 GHz formaldehyde absorption line is distributed in MON R2, S156, DR17/L906, and M17/M18 regions. More specifically, we look for relationship among H2CO, 12CO, 13CO spectral lines. Methods. The four regions of R2 (60'x90'), S156 (5'0x70'), DR17/L906 (40'x60'), M17 /M18 (70'x80')were observed H2CO (beam 10'), H110a recombination 6 cm continuum 12CO 1'), 1'). compared H2CO,12CO,13CO, distributions, also spectra parameters H2CO,12CO, 13CO. Column densities...
We performed a 22 GHz H2O maser survey towards 221 Bolocam Galactic Plane Survey (BGPS) sources. detected 107 masers, of which 12 are new. The detection rate is 48.4 per cent for our sample. obtained the positions five new masers via On Fly (OTF) observations. correlated with continuum emission fluxes BGPS sources at far-infrared, sub-millimetre and millimetre wavelengths. employed classification Dunham et al. to classify evolutionary stage into Group 0, 1, 2, 3. velocity range increases as...
CR Climate Research Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 61:241-257 (2014) - DOI: https://doi.org/10.3354/cr01236 Decadal variation of East Asian radiative forcing due anthropogenic aerosols during 1850–2100, and role atmospheric moisture Jiandong Li1,2, Wei-Chyung Wang2,*, Zhian Sun3, Guoxiong Wu1, Hong Liao4, Yimin Liu1 1LASG, Institute Atmospheric Physics, Chinese Academy Sciences,...
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.
Abstract This paper presents 30-years’ detailed case history and technique evolution of an ultra-deep, HPHT tight carbonate reservoir in eastern China. Productivity after the previous acidizing, pad acid fracturing multistage is far from satisfactory because short fracture length short-term conductivity created high closure stress temperature conditions. The target formation consists heterogeneous limestone deposits with poor petrophysics, i.e., deeply burial depth (>4800 m), pressure...
Single-pointing observations of NH$_3$ (1,1) and (2,2) were conducted towards 672 Planck Early Release Cold Cores (ECCs) using the Nanshan 26-m radio telescope. Out these sources, a detection rate 37% (249 cores) was achieved, with NH$_3$(1,1) hyperfine structure detected in 187 NH$_3$(2,2) emission lines 76 cores. The NH3 is positively correlated continuum fluxes at frequency 857 GHz. Among observed cores, ~22% have associated stellar IR objects within beam size (~2$\arcmin$). This suggests...
The feedback effect of massive stars can either accelerate or inhibit star formation activity within molecular clouds. Studying the morphology clouds near W5 offers an excellent opportunity to examine this effect. We conducted a comprehensive survey complex using Purple Mountain Observatory 13.7 m millimeter telescope. This includes 12 CO, 13 and C 18 O ( J = 1 − 0), with sky coverage 6.6 deg 2 (136.0° < l 138.75°, 0° b 2.4°). Furthermore, we performed simultaneous observations NH 3 (1,1)...
Abstract We investigate the evolutionary dynamics with archival continuum and line data of 27 giant molecular clouds (GMCs) in Milky Way, focusing on their influence star formation. Examining dense gas mass fraction (DGMF) among GMCs, we categorize them into low-DGMF (DGMF < 20%), medium-DGMF (20% DGMF 60%), high-DGMF (60% DGMF) groups. The analysis uncovers systematic trends free-fall time, virial parameter, surface density, formation rate (SFR), SFR per unit area (Σ ), efficiency for as...
A total of 188 high-mass outflows have been identified from a sample 694 clumps the Millimetre Astronomy Legacy Team 90 GHz survey, representing detection rate approximately 27%. The increases protostellar stage to H II stage, but decreases again at photodissociation (PDR) suggesting that are being switched off during PDR stage. An intimate relationship is found between outflow action and presence masers, water masers appear together with 6.7 methanol masers. Comparing infall without...
The bubble G15.684-0.29 has a radius of 15.7 pc. Its large size indicates that it may have enough time to trigger star formation. We identify 39 dense cold clumps around the from Hi-GAL survey. All them satisfy criteria for forming massive stars, and most lie in shell. 19 molecular 12CO(3–2) survey, all which are gravitationally bound. found 9 Class I YSOs, 28 II 12 transition disks (TDs) bubble. For those young stellar objects (YSOs) located within boundary, 6 7 YSOs shell, 15 22 inside...