A5101722552- Lightning and Electromagnetic Phenomena
- Astrophysics and Cosmic Phenomena
- Radio Astronomy Observations and Technology
- Physics of Superconductivity and Magnetism
- Gamma-ray bursts and supernovae
- Ionosphere and magnetosphere dynamics
- Earthquake Detection and Analysis
- Galaxies: Formation, Evolution, Phenomena
- Superconducting Materials and Applications
- Stellar, planetary, and galactic studies
- Astrophysics and Star Formation Studies
- Combustion and Detonation Processes
- Electrical Fault Detection and Protection
- Fire effects on ecosystems
- HVDC Systems and Fault Protection
- High voltage insulation and dielectric phenomena
- Magnetic Properties and Applications
- Combustion and flame dynamics
- Pulsars and Gravitational Waves Research
- Topic Modeling
- Fire dynamics and safety research
- Seismic Waves and Analysis
- GaN-based semiconductor devices and materials
- Astronomical Observations and Instrumentation
- Astrophysical Phenomena and Observations
Northwest University
2023-2024
Dalian Institute of Chemical Physics
2022-2024
Chinese Academy of Sciences
2011-2024
University of Science and Technology of China
2021-2024
Guilin University of Electronic Technology
2022-2024
Wuhan University
2024
Beihang University
2023
Samsung (China)
2023
University of Science and Technology Chittagong
2022
Tianjin University of Science and Technology
2022
We study the spectral and polarization properties of supernova remnants (SNRs) based on our 6cm survey data. The observations were taken from Sino-German Galactic plane. By using integrated flux densities at together with measurements other wavelengths literature we derive global spectra 50 SNRs. In addition, use to present images 24 derived for 51 small SNRs angular sizes less than 1 degree. Global radio indices obtained in all cases except Cas A. For G15.1-1.6, G16.2-2.7, G16.4-0.5,...
Repetitive Transcranial Magnetic Stimulation (rTMS)/ Deep-brain (DMS) is an effective therapy for various neuropsychiatric disorders including major depression disorder. The molecular and cellular mechanisms underlying the impacts of rTMS/DMS on brain are not yet fully understood. Here we studied effects deep-brain magnetic stimulation to level. We examined adult hippocampal neurogenesis synaptic plasticity rodent under stress conditions with treatment. found that DMS promotes significantly...
Abstract Investigating lightning is of key significance in understanding the mechanism and mitigating hazards. We reported an experiment investigating through three‐dimensional (3D) thunder locating using a Distributed Acoustic Sensing (DAS) array Hefei, China. In this experiment, we recast 7.7 km long urban telecom optical fiber cable as 3,850 sensors DAS technique. From dense recording, manually identified 101 events during six positive cloud‐to‐ground (CG) flashes within 20 min. The...
<i>Context. <i/>Linearly polarized Galactic synchrotron emission provides valuable information about the properties of magnetic field and interstellar magneto-ionic medium, when Faraday rotation along line sight is properly taken into account.<i>Aims. <i/>We aim to survey plane at <i>λ<i/>6 cm including linear polarization. At such a short wavelength effects are in general small can be probed larger distances than long wavelengths.<i>Methods. <i/>The Urumqi 25-m telescope used for sensitive...
Abstract We identify and investigate the intermittent propagation of upward positive negative leaders in rocket‐triggered lightning based on comprehensive observations fine time‐resolved optical, current, electromagnetic fields. There is an abrupt luminous crown blooming due to achievement a leader step, after which channel weakens head degrades. During pausing, residual structure recognized at area previous blooming, form floating segment. Our observation point possible mechanism that it...
We aim to study the polarization and magnetic field properties of supernova remnant HB 9 using new 21-cm continuum cube data from Five-hundred-meter Aperture Spherical Radio Telescope (FAST). computed Faraday depth at 21 cm re-analyzed rotation measures (RMs) additional Effelsberg 2695-MHz Urumqi 4800-MHz data. FAST total-intensity images two subbands were decomposed into components multiple angular scales check spectral-index variation via temperature versus plots (TT-plots). The...
Linear polarization of diffuse Galactic emission is a signature magnetic fields in the interstellar medium our Galaxy. Observations at high frequencies are less affected by Faraday depolarization than those lower and able to detect polarized from more distant regions. We attempt perform sensitive survey disk 6 cm wavelength. made observations plane using Urumqi 25-m telescope covering area 60deg< l <129deg |b|<5deg. Missing large-scale structures were restored extrapolation WMAP data....
A NiOx buffer layer is introduced in GaN-based light-emitting diodes to form low resistance ohmic contacts between p-type GaN and graphene conductive electrodes, leading improved performance with lower operating voltage higher light output power.
Context. S147 is a large faint shell-type supernova remnant (SNR) known for its remarkable spectral break at cm-wavelength, which an important physical property to characterize SNR evolution. However, the based on radio observations with limited precision.
Abstract With the measurements in SHandong Triggering Lightning Experiment and Guangdong Comprehensive Observation on Discharge China, we examine electromagnetic signals associated with upward positive leaders during initial stage of negative triggered lightning. The magnetic field ( B field) measured at close range (<100 m) for both sites can be divided into two categories (i.e., impulsive ripple pulses) according to discernibility separation between individual pulses. pulses are well...
Current wireless capsule endoscopy (WCE) is limited in the long examination time and low flexibility since passively moved by natural peristalsis. Efforts have been made to facilitate active locomotion of WCE using magnetic actuation localization technologies. This work focuses on motion control robotic under a complex gastrointestinal (GI) tract environment order improve efficiency accuracy its dynamic, environments. Specifically, system based four-electromagnetic coil module designed,...
Context.G156.2+5.7 is a large supernova remnant (SNR) first discovered in the ROSAT X-ray survey due to its exceptional high brightness. Subsequently detailed X-ray, optical and Hα studies of this SNR were made, but radio observations are rare because low surface brightness size.
Persistent current (PC) operation is important for superconductive magnets used in magnetic resonance imaging (MRI) systems, which demands at least two high critical joints to form a circuit. Moreover, the joint resistance and of always play significant roles design development large scale applications because working heat load system depend greatly on them. In this work, joining method using Mg B powder mixture as flux proposed. The voltage–current (V–I) curves sample made by such were...
Many physical properties of this SNR such as spectrum and polarization can only be investigated by radio observations. The $\lambda$11 cm $\lambda$6\ continuum observations G65.2+5.7 were made with the Effelsberg 100-m Urumqi 25-m telescopes, respectively, to investigate integrated spectrum, spectral index distribution, magnetic field properties. $\lambda$21 archival data from telescope have been also used. flux densities at $\lambda 11$ 6$ are $21.9\pm3.1$ Jy 16.8$\pm$1.8 Jy, respectively....
Abstract In summer of 2019, the bandwidth magnetic field sensor with relatively high sensitivity was extended to 1.2 MHz during triggered lightning experiment Field Experiment Base on Lightning Sciences, China Meteorological Administration (CMA‐FEBLS) in Conghua, Guangdong Province. The measurements new fields reveal presence microsecond‐scale pulses entire duration upward positive leader (UPL), including quiet stage when only few signals can be discerned previous observations, which...