A5100425060- Stellar, planetary, and galactic studies
- Astrophysics and Star Formation Studies
- Astro and Planetary Science
- Astronomy and Astrophysical Research
- Distributed and Parallel Computing Systems
- Gamma-ray bursts and supernovae
- Galaxies: Formation, Evolution, Phenomena
- Laser-Plasma Interactions and Diagnostics
- Astrophysics and Cosmic Phenomena
- Molecular Spectroscopy and Structure
- Radio Astronomy Observations and Technology
- Scientific Computing and Data Management
- Rare-earth and actinide compounds
- Advanced Surface Polishing Techniques
- Radiation Detection and Scintillator Technologies
- Magnetic Properties of Alloys
- Particle Detector Development and Performance
- Cloud Computing and Resource Management
- Astronomical and nuclear sciences
- Historical Astronomy and Related Studies
- Advanced X-ray Imaging Techniques
- Enzyme Structure and Function
- Spectroscopy and Laser Applications
- X-ray Spectroscopy and Fluorescence Analysis
- Additive Manufacturing and 3D Printing Technologies
Purple Mountain Observatory
2015-2024
Université de technologie de belfort-montbéliard
2024
China Academy of Engineering Physics
2023-2024
Ministry of Industry and Information Technology
2024
Harbin Institute of Technology
2024
Henan Polytechnic University
2017-2024
Chinese Academy of Sciences
2010-2023
University of Science and Technology of China
2017-2023
Science et Ingénierie des Matériaux et Procédés
2023
Université Grenoble Alpes
2023
The contamination of micro- and nanoplastics in marine systems freshwater is a global issue. Determination the aqueous environment high priority to fully assess risk that plastic particles will pose. Although microplastics have been detected variety aquatic ecosystems, analysis remains an unsolved challenge. Herein, for first time, Triton X-45 (TX-45)-based cloud-point extraction (CPE) was proposed preconcentrate trace environmental waters. Under optimum conditions, enrichment factor 500...
In the process of manufacturing world's largest silicon carbide (SiC) aspheric mirror, primary difficulties are mirror blank preparation, asphere fabrication, and testing, as well cladding coating. Specifically, challenges include homogeneity complicated structure casting, accuracy efficiency fabrication process, print-through effect, fidelity precision test procedure, stress denseness dynamic range interferometric measurement, air turbulence error due to long optical path. To break through...
The astrometric satellite Gaia recently released part of its third data set, which provides a good opportunity to hunt for more open clusters in the Milky Way. In this work, we conduct blind search Galactic disk using sample-based clustering method with high spatial resolution, is especially suited finding hidden targets. addition confirming 1930 previously known and 82 globular clusters, 704 new stellar are proposed as potential at latitudes $|$b$|$ < 20 {deg}. For each these present...
Context. The astrometric satellite Gaia is expected to significantly increase our knowledge as the properties of Milky Way. Early Data Release 3 (Gaia EDR3) provides most precise parallaxes for many OB stars, which can be used delineate Galactic spiral structure. Aims. We investigate local structure with largest sample spectroscopically confirmed young stars available date, and we compare it what was traced by parallax measurements masers. Methods. A consisting three different groups massive...
The structure and evolution of the spiral arms our Milky Way are basic but long-standing questions in astronomy. In particular, lifetime is still a puzzle has not been well constrained from observations. this work, we aim to inspect these issues using large catalogue open clusters. We compiled 3794 clusters based on Gaia EDR3. A majority have accurately determined parallaxes, proper motions, radial velocities. age parameters for collected references or calculated work. order understand...
Abstract In spite of much work, the overall spiral structure morphology Milky Way remains somewhat uncertain. last two decades, accurate distance measurements have provided us with an opportunity to solve this issue. Using precise locations very young objects, for first time, we propose that our galaxy has a multiple-arm consists two-arm symmetry (the Perseus and Norma Arms) in inner parts extends outer parts, where there are several long, irregular arms Centaurus, Sagittarius, Carina,...
Structural coloration generates colors by the interaction between incident light and micro- or nano-scale structures. It has received tremendous interest for decades, due to advantages including robustness against bleaching environmentally friendly properties (compared with conventional pigments dyes). As a versatile strategy, tuning of structural based on nanoscale photonic structures been extensively explored can enable broad range applications displays, anti-counterfeiting, coating....
Abstract M giants, with their distinctive properties such as high luminosity, serve excellent indicators for mapping the structure of Milky Way. The distance to distant giants can be determined by using color–magnitude relation (CMR), which is derived from diagrams specific systems in previous studies. In this work, we aimed achieve more accurate determination focusing on open clusters (OCs) a large number member stars and thus improve CMR. For first time, compiled census OCs harboring Gaia...
Abstract As planetary nebulae evolve, they develop slow and strong dust-driven stellar winds, making the joint study of dust gas essential for understanding their nature. a pilot investigation, we selected nebula (PN) K 3-54 as our target, only known PN in Milky Way to exhibit infrared emission from both graphene (C 24 ) fullerene 60 ). The is traced via molecular line emissions 12 CO, 13 C 18 O ( J = 1 → 0), observed using 13.7 m telescope Purple Mountain Observatory. We investigate...
Ras homolog enriched in brain (Rheb), a small GTPase, positively regulates the mTORC1 pathway. The GDP-GTP exchange of Rheb has been suggested to be facilitated by translationally controlled tumor protein (TCTP). Here we demonstrate that human TCTP (hTCTP) interacts with (hRheb) and accelerates its GDP release vitro hTCTP activates pathway vivo. To investigate underlying mechanism, built structure models GDP- GTP-bound hRheb complexes performed molecular dynamics simulations models, which...
The Purple Mountain Observatory 13.7 m radio telescope has been used to search for 95 GHz (8$_0$--7$_1$A$^+$) class I methanol masers towards 1020 Bolocam Galactic Plane Survey (BGPS) sources, leading 213 detections. We have compared the line width of and HCO$^+$ thermal emission in all detections on that basis we find 205 are very likely be masers. This corresponds an overall detection rate our BGPS sample 20%. Of detected 144 (70%) new discoveries. Combining results with those previous...
Methods for the removal of silver nanoparticles (AgNPs) and their transformation products, silver-containing (AgCNPs), are important, because potential risks to general population environment. In this study, aged iron oxide magnetic particles (IOMPs) were synthesized by a simple solvothermal reaction used AgCNPs. The prepared IOMPs exhibit high adsorption capacity toward AgCNPs in aqueous medium. Kinetic studies indicated that is pseudo-second-order process. experimental data follow Langmuir...
It is beneficial to calibrate the period Wesenheit metallicity relation (PWZR) of Delta Cephei stars (DCEPs), i.e., classical Cepheids, using accurate parallaxes associated open clusters (OCs) from Gaia data release 3 (DR3). To this aim, we obtain a total 43 OC-DCEPs (including 33 fundamental mode, 9 first overtone and 1 multimode DCEPs.) PWZR as $W_G=(-3.356 \,\pm\, 0.033) \,(\log{P-1})+(-5.947 0.025)+(-0.285 0.064)[\textrm{Fe/H}]$. The concurrently obtained residual parallax offset in OC,...
Abstract The manipulation of light has become the focus various modern optical technologies. emergence bound states in continuum (BICs) offers an alternative platform for controlling light, including confinement and polarization, amplitude, phase. Currently, research on photonic BICs is maturing, with extensive exploration methods achieving their applications, lasing, sensing, enhanced light‐matter interaction. In this review, overview provided. Specifically, unique properties are first...
A pinhole small-angle x-ray scattering (SAXS) instrument was constructed at the SUNY X3A2 beamline, National Synchrotron Light Source, Brookhaven Laboratory. The three pinholes were mounted in a thick-walled stainless steel pipe and prealigned by using portable laser source charge-coupled device (CCD) area detector. After prealignment, incorporation of collimator to synchrotron required only maximization incident intensity passing through pinholes, which could be done easily scintillation...
Using the cross-matched data of Gaia EDR3 and 2MASS Point Source Catalog, a sample RC stars with parallax accuracies better than 20% is identified used to reveal nearby spiral pattern traced by old stars. As shown in overdensity distribution stars, there an arc-like feature extended from $l~\sim$ 90$^\circ$ $\sim$ 243$^\circ$, which passed close Sun. This probably arm segment indicating Galaxy potential vicinity By comparing arms depicted young objects, we found that are considerable offsets...
We present a survey of molecular outflows across the dark cloud complex in Cygnus region, based on 46.75 deg^2 field CO isotopologues data from Milky Way Imaging Scroll Painting (MWISP) survey. A supervised machine learning algorithm, Support Vector Machine (SVM), is introduced to accelerate our visual assessment outflow features cube 12CO and 13CO J = 1-0 emission. total 130 candidates are identified, which 77 show bipolar structures 118 new detections. Spatially, these located inside dense...
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 <?CDATA ${6.3}_{-0.5}^{+0.6}$?> <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>...
The first laser–plasma interaction experiment using lasers of eight beams grouped into one octad has been conducted on the Shenguang Octopus facility. Although each beam intensity is below its individual threshold for stimulated Brillouin backscattering (SBS), collective behaviors are excited to enhance SBS. In particular, when two-color/cone with wavelength separation 0.3 nm used, backward SBS reflectivities show novel behavior in which longer achieve higher gain. This property can be...