A5052621392- Ionosphere and magnetosphere dynamics
- Atmospheric Ozone and Climate
- Gyrotron and Vacuum Electronics Research
- Solar and Space Plasma Dynamics
- Atmospheric and Environmental Gas Dynamics
- Microwave Engineering and Waveguides
- Geological and Geochemical Analysis
- Climate variability and models
- Geophysics and Gravity Measurements
- earthquake and tectonic studies
- High-pressure geophysics and materials
- Atmospheric aerosols and clouds
- Geochemistry and Geologic Mapping
- Atmospheric chemistry and aerosols
- Earthquake Detection and Analysis
- Ocean Waves and Remote Sensing
- Pulsed Power Technology Applications
- Particle accelerators and beam dynamics
- Remote Sensing and Land Use
- Geochemistry and Elemental Analysis
- Coastal and Marine Dynamics
- Aeolian processes and effects
- Marine and coastal ecosystems
- Geology and Paleoclimatology Research
- Meteorological Phenomena and Simulations
Chinese Academy of Sciences
2016-2025
Hefei Institutes of Physical Science
2016-2025
National Space Science Center
2014-2024
Henan Normal University
2014-2024
Guilin University of Technology
2022-2024
Aerospace Information Research Institute
2020-2024
Guangzhou Institute of Geochemistry
2020-2024
Lanzhou Institute of Chemical Physics
2024
Ocean University of China
2014-2024
Changchun Institute of Applied Chemistry
2022-2024
Activated N-doped porous carbons (a-NCs) were synthesized by pyrolysis and alkali activation of graphene incorporated melamine formaldehyde resin (MF). The moderate N doping levels, mesopores rich texture, incorporation enable the applications a-NCs in surface conductivity dependent electrode materials for supercapacitor dye-sensitized solar cell (DSSC). Under optimal temperature 700 °C, afforded sample, labeled as a-NC700, possesses a specific area 1302 m2 g–1, fraction 4.5%, modest...
Abstract Background Oysters are morphologically plastic and hence difficult subjects for taxonomic evolutionary studies. It is long been suspected, based on the extraordinary species diversity observed, that Asia Pacific epicenter of oyster speciation. To understand its history, we collected five Crassostrea from sequenced their complete mitochondrial (mt) genomes in addition to two newly released Asian oysters ( C. iredalei Saccostrea mordax ) a comprehensive analysis. Results The six mt...
Abstract The first no‐gap OH airglow all‐sky imager network was established in northern China February 2012. is composed of six imagers that make observations gravity waves and cover an area about 2000 km east west 1400 south north. An unusual outbreak Concentric Gravity Wave (CGW) events were observed by the nearly every night during half August 2013. These coincidentally satellite sensors from Fengyun‐2 (FY‐2), Atmospheric Infrared Sounder (AIRS)/Aqua, Visible Imaging Radiometer Suite...
A pulse prototype of a W-band TE <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">01</sub> mode gyrotron traveling-wave tube (gyro-TWT) amplifier is designed, and it features high gain broadband capabilities. The input coupler constructed by mounting sapphire pill-box window onto Y-type converter. power output will employ triple-sapphire-disc configuration to achieve return loss lower than -30 dB over bandwidth 8 GHz. To suppress the spurious...
Molecular dynamics simulations of a liquid layer between solid surfaces under temperature gradient were performed to investigate the mechanism by which solid-liquid interfacial heat transfer is affected adsorption surfactant on with various concentrations surfactant. The and solvent chosen be single-atom molecules contact angle 0 180 degrees surface, respectively. Density distributions showed that formed surface. flux across interface two layers closest surface was decomposed into energy...
The Sanshandao is a typical altered-rock-style gold deposit (>260 t @ 3.96 g/t). located at the northernmost end of NE-trending fault in northwestern Jiaodong Peninsula. orebodies are mainly hosted by footwall (minor hanging-wall) fault, which cut Jurassic granites. According to mineral assemblage and crosscutting relationship, five hydrothermal/mineralization stages were identified: (I) veinlet-disseminated quartz + pyrite ± chalcopyrite, (II) chalcopyrite native Au veining, (III) galena...
We present the novel Efficient Line Segment Detector and Descriptor (ELSD) to simultaneously detect line segments extract their descriptors in an image. Unlike traditional pipelines that conduct detection description separately, ELSD utilizes a shared feature extractor for both description, provide essential features higher-level tasks like SLAM image matching real time. First, we design one-stage compact model, propose use mid-point, angle length as minimal representation of segment, which...
Abstract. Gravity waves (GWs) strongly affect atmospheric dynamics and photochemistry the coupling between troposphere, stratosphere, mesosphere, thermosphere. In addition, GWs generated by strong disturbances in troposphere (e.g. thunderstorms typhoons) can atmosphere of Earth from to However, fundamental process GW propagation thermosphere is poorly understood because it challenging constrain this using observations. Moreover, tend dissipate rapidly molecular diffusion increases...
Abstract With the rapid growth of fungal infections and emergence multi‐drug resistant (MDR) strains, new antifungals with novel mechanisms are a pressing need to tackle this emerging health problem. Herein it is reported for first time that hyperbranched polylysine (HPL) shows antifungal activities against Candida , especially drug‐sensitive MDR C. albicans broad‐spectrum antibacterial both Gram‐negative Gram‐positive bacteria. The high antimicrobial ascribed charge density compact size...
The central element of a phased array antenna that performs beam electrical scanning, as well signal transmission and reception, is the transceiver (T/R) module. Higher standards have been set for integration, volume, power consumption, stability, environmental adaptability T/R modules due to increased operating frequency antennas, variability application platforms, diversified development system functions. Device-based multichannel are key realizing low-profile Ka-band microsystem...
The Chinese HuanjingJianzai-2 (HJ-2) A/B satellites are equipped with advanced sensors, including a Multispectral Camera (MSC) and Polarized Scanning Atmospheric Corrector (PSAC). To address the challenges of atmospheric correction (AC) for MSC’s wide-swath, wide-field images, this study proposes pixel-by-pixel method incorporating Bidirectional Reflectance Distribution Function (BRDF) effects. approach uses synchronous parameters from PSAC, an lookup table, semi-empirical BRDF model to...
Abstract. Three groups of intense CGWs lasting over 10 hours were observed by an airglow imager at the Southern Space Observatory (SSO) in São Martinho da Serra (29.44° S, 53.82° W) southern Brazil on 17–18 September 2023. These CGW events simultaneously captured spaceborne instruments, including Atmospheric Infrared Sounder (AIRS) aboard Aqua, Visible Imaging Radiometer Suite (VIIRS) onboard Suomi NPP, and Sounding Atmosphere using Broadband Emission Radiometry (SABER) instrument operating...
The relativistic electron cyclotron maser (ECM) has been successfully applied to generating high-power THz wave. In order realize the additional advantages of broadband tuning and high efficiency interaction, this paper is devoted exploring pre-bunched ECM. Other than a conventional open-cavity tunable gyrotron consecutively switching between axial modes frequency tuning, ECM system operates on backward traveling-wave resonance achieve smooth tuning. Especially, an interaction circuit...
Abstract A two‐dimensional nonlinear numerical model was used to simulate large winds (≥ 100 m s −1 ) and wind shears 40 km in the mesosphere lower thermosphere (MLT) that are caused by interaction between gravity waves (GWs) migrating tidal background. By varying wavelengths of GWs phases diurnal semidiurnal tides, 64 experiments were performed. Our indicate both tides strongly modulate occurrence GW breaking, resulted shears. The simulated good agreement with those from rocket‐sounding...
Abstract This paper reports some interesting equatorial plasma bubbles (EPBs) on 4 and 5 October 2013 29 30 September observed by two all‐sky imagers located in the magnetically region of Hainan (19.5°N; 9.5° geomagnetic latitude) Guiping (23.8°N; 13.9° latitude), China. The case shows following: (1) EPBs had planar wave‐like structures their wavefronts were parallel to each other before midnight. (2) angle between those meridian ~30°. (3) Near midnight, higher‐latitude part one EPB suddenly...
Fluorescent nitrogen containing carbon quantum dots (NCQDs) and porous microspheres (PCMs) were simultaneously synthesized by a facile hydrothermal method using beer as precursor.
Abstract The altitude‐ and latitude‐dependent responses of neutral temperature in the lower thermosphere to 2013 St. Patrick's Day geomagnetic storm have been studied using measurements from Sounding Atmosphere Broadband Emission Radiometry (SABER) instrument onboard TIMED satellite Solar Occultation For Ice Experiment (SOFIE) AIM satellite. Both SABER SOFIE observations revealed that both increase (having peaks ~15–25 K) decrease peak ~15 K), which were associated with storm, occurred two...
Multidrug-resistant (MDR) Gram-negative bacteria infections have gradually become a more serious health problem recently, and antibacterial drugs are urgently needed to tackle MDR bacteria. Herein, we synthesized series of quaternary ammonium salt derivatives hyperbranched polylysine (HPL-Cm-n) with different alkyl chain lengths (m = 4, 8, 12, 16) grafting ratios (n 5.8–21.0) salts (Cm). HPL-Cm-ns exhibited excellent activities against drug-sensitive E. coli P. aeruginosa, specifically,...