A5030184407- Gamma-ray bursts and supernovae
- Pulsars and Gravitational Waves Research
- Astrophysical Phenomena and Observations
- Astrophysics and Cosmic Phenomena
- Stellar, planetary, and galactic studies
- Ocean Waves and Remote Sensing
- Coastal and Marine Dynamics
- Ferroelectric and Piezoelectric Materials
- Multiferroics and related materials
- Astro and Planetary Science
- Oceanographic and Atmospheric Processes
- Magnetic and transport properties of perovskites and related materials
- High-pressure geophysics and materials
- Spectroscopy and Laser Applications
- Plant Water Relations and Carbon Dynamics
- Nonlinear Waves and Solitons
- Mechanics and Biomechanics Studies
- Neutrino Physics Research
- Astronomy and Astrophysical Research
- Semiconductor Quantum Structures and Devices
- Hydraulic Fracturing and Reservoir Analysis
- Particle Detector Development and Performance
- Advanced Mathematical Physics Problems
- Spinal Cord Injury Research
- Cosmology and Gravitation Theories
University of Chinese Academy of Sciences
2024
Hebei General Hospital
2024
Institute of High Energy Physics
2017-2023
Chinese Academy of Sciences
2013-2023
Wuhan University
2009-2023
Xi'an Shiyou University
2022-2023
Beijing Technology and Business University
2023
National Institute for Astrophysics
2020-2022
Soochow University
2017-2022
First Affiliated Hospital of Soochow University
2017-2022
The MYB transcription factor superfamily is a large gene family that plays central roles in developmental processes and defence responses plants. Unlike Arabidopsis, only few members of the R2R3-MYB have been functionally well characterized maize, especially abiotic stress-response pathways. Subgroup-specific conserved motifs outside domain may reflect functional conservation. A comparative genomics study using Arabidopsis stress-responsive protein sequences identified 46 ZmMYB genes be...
The origin(s) and mechanism(s) of fast radio bursts (FRBs), which are short pulses from cosmological distances, have remained a major puzzle since their discovery. We report strong Quasi-Periodic Oscillation(QPO) 40 Hz in the X-ray burst magnetar SGR J1935+2154 associated with FRB 200428, significantly detected Hard Modulation Telescope (Insight-HXMT) also hinted by Konus-Wind data. QPOs only been rarely detected; our 3.4 sigma (p-value is 2.9e-4) detection QPO reported here reveals...
Using state-of-the-art aberration-corrected annular-bright-field and high-angle annular-dark-field scanning transmission electron microscopy, we investigated domain wall structures in multiferroic hexagonal TmMnO${}_{3}$ LuMnO${}_{3}$ ceramics at the atomic scale. Two types of 180\ifmmode^\circ\else\textdegree\fi{} walls (DWs), i.e., transverse longitudinal DWs with uniform displacements $a$/3 2$a$/3, respectively, were identified along $b$ direction, which is agreement interlock between...
By directly measuring electrical hysteresis loops using the Positive-Up Negative-Down (PUND) method, we accurately determined remanent ferroelectric polarization Pr of orthorhombic RMnO3 (R = Ho, Tm, Yb, and Lu) compounds below their E-type spin ordering temperatures. We found that LuMnO3 has largest 0.17 uC/cm^2 at 6 K in series, indicating its single-crystal form can produce a least 0.6 \muuC/cm^2 0 K. Furthermore, fixed temperature, decreases systematically with increasing rare earth ion...
We analyze the light scattered by a single InAs quantum dot interacting with resonant continuous-wave laser. High-resolution spectra reveal clear distinctions between coherent and incoherent scattering, laser intensity spanning more than four orders of magnitude. find that fraction coherently photons can approach unity under sufficiently weak or detuned excitation, ruling out pure dephasing as relevant decoherence mechanism. show how spectral diffusion shapes spectra, correlation functions,...
In this paper we show that the most luminous supernova discovered very recently, ASASSN-15lh, could have been powered by a newborn ultra-strongly-magnetized pulsar, which initially rotates near Kepler limit. We find if pulsar is neutron star, its rotational energy be quickly lost as result of gravitational-radiation-driven r-mode instability; it strange quark however, instability highly suppressed due to large bulk viscosity associated with nonleptonic weak interaction among quarks and thus...
Aroma is an important attribute of infant formula (IF). In this study, 218 volatiles and 62 odor-active compounds were detected from IF by dynamic headspace sampling combined with comprehensive 2-dimensional gas chromatography-olfactometry-mass spectrometry. Aldehydes ketones determined as the most abundant compounds. Among them, contents pentanal hexanal abundant, while 1-octen-3-one had highest flavor dilution factor odor activity value in IF. Sensory evaluation electronic nose analysis...
To explore the population structures and dynamics of Rhododendron shrub communities at different stages succession in northwest Guizhou, China, this study examined populations annae irroratum with two stages. A space-for-time substitution was employed to establish diameter class/height structures, static life tables, survival/mortality rate/disappearance rate curves both orders succession. Their structural quantitative were analyzed, their development trends predicted. The results showed...
Abstract Some quasi-thermal (QT)-dominated gamma-ray bursts (GRBs) could be well described by a multicolor blackbody (mBB) function or combined model of BB plus nonthermal (NT) component. In this analysis, two QT radiation-dominated with known emission properties (GRB 210610B, likely from hybrid jet, and GRB 210121A, spectrum consistent nondissipative photospheric pure hot fireball) are used to make comparison between these models. To diagnose the magnetization central engine, “top-down”...
In this paper we collect 19 hydrogen-deficient superluminous supernovae (SLSNe) and fit their light curves, temperature evolution, velocity evolution based on the magnetar-powered model. To obtain best-fitting parameters, incorporate Markov Chain Monte Carlo approach. We get rather good fits for 7 events ($\chi^2$/d.o.f = $0.24-0.96$) other $1.37-3.13$). find that initial periods ($P_{0}$) magnetic strength ($B_{p}$) of magnetars supposed to power these SLSNe are in range $\sim 1.2-8.3$ ms...
Abstract We present optical and ultraviolet observations of nearby Type Ic supernova (SN Ic) SN 2017ein, as well a detailed analysis its progenitor properties from both the early-time prediscovery Hubble Space Telescope ( HST ) images. The light curves started within 1 day to ∼275 days after explosion, spectra range ∼2 ∼90 explosion. Compared other normal SNe like 2007gr 2013ge, 2017ein seems have more prominent C ii absorption higher expansion velocities in early phases, suggestive...
ABSTRACT We report on the Insight-HXMT observations of new black hole X-ray binary MAXI J1820+070 during its 2018 outburst. Detailed spectral analysis via continuum fitting method shows an evolution inferred spin high soft sate. Moreover, hardness ratio, non-thermal luminosity and reflection fraction also undergo evolution, exactly coincident to period when transition takes place. The unphysical is attributed inner disc, which caused by collapse a hot corona due condensation mechanism or may...
Diurnal variations in photosynthesis, chlorophyll fluorescence, xanthophyll cycle, antioxidant enzymes and metabolism leaves response to low sink demand caused by fruit removal (–fruit) were studied 'Zaojiubao' peach (Prunus persica (L.) Batch) trees during the final stage of rapid growth. Compared with retained treatment (+fruit), –fruit resulted a significantly lower photosynthetic rate, stomatal conductance transpiration but generally higher internal CO2 concentration, leaf-to-air vapor...
Almost all superluminous supernovae (SLSNe) whose peak magnitudes are $\lesssim -21$ mag can be explained by the $^{56}$Ni-powered model, magnetar-powered (highly magnetized pulsar) model or ejecta-circumstellar medium (CSM) interaction model. Recently, iPTF13ehe challenges these energy-source models, because spectral analysis shows that $\sim 2.5M_\odot$ of $^{56}$Ni have been synthesized but inadequate to power bolometric emission iPTF13ehe, while rebrightening late-time light-curve (LC)...
ABSTRACT Millisecond magnetars can be formed via several channels: core collapse of massive stars, accretion-induced white dwarfs (WDs), double WD mergers, neutron star (NS) and WD-NS mergers. Because the mass ejecta from these channels could quite different, their light curves are also expected to diverse. We evaluate dynamic evolution optical transients powered by millisecond magnetars. find that magnetar with a short spin-down timescale converts its rotational energy mostly into kinetic...
HERMES (High Energy Rapid Modular Ensemble of Satellites) Technological and Scientific pathfinder is a space borne mission based on LEO constellation nano-satellites. The 3U CubeSat buses host new miniaturized detectors to probe the temporal emission bright high-energy transients such as Gamma-Ray Bursts (GRBs). Fast transient localization, in field view several steradians with arcmin-level accuracy, gained by comparing time delays among same event detection epochs occurred at least 3 With...
Small water bodies ranging in size from 1 to 50,000 m2, are numerous, widely distributed, and have various functions storage, agriculture, fisheries. used for agriculture fisheries economically significant China, hence it is important properly identify analyze them. In remote sensing technology, body identification based on band analysis, image classification, indices often designed large, homogenous bodies. Traditional less accurate small bodies, which contain submerged or floating plants...
ABSTRACT Spinal cord injury (SCI) is global health concern. The effective strategies for SCI are relevant to the improvement on nerve regeneration microenvironment. Vascular endothelial growth factor (VEGF) an important cytokine inducing angiogenesis and accelerating system function recovery from injury. We proposed that VEGF could improve in SCI. However, uncontrolled delivery target site not only decreases therapeutic efficacy but also increases risk of tumor information. implanted...
In this paper, we investigate two hydrogen-poor superluminous supernovae (SLSNe) iPTF15esb and iPTF13dcc whose light curves (LCs) show significant deviation from the smooth rise fall. The LC of exhibits peaks a post-peak plateau, furthermore late-time spectrum shows strong, broad H$\alpha$ emission line. early-time long duration bump followed by second peak. Here propose an ejecta-circumstellar medium (CSM) interaction model involving multiple shells/winds use it to explain LCs iPTF13dcc. We...
It is well-known that ordinary supernovae (SNe) are powered by 56Ni cascade decay. Broad-lined type Ic SNe (SNe Ic-BL) a subclass of not all exclusively was suggested some Ic-BL magnetar spin-down. iPTF16asu peculiar broad-lined supernova discovered the intermediate Palomar Transient Factory. With rest-frame rise time only 4 days, challenges existing popular models, for example, radioactive heating (56Ni-only) and magnetar+56Ni models. Here we show this rapid could be attributed to...