A5079672522- Cryospheric studies and observations
- Solid State Laser Technologies
- Laser Material Processing Techniques
- Climate change and permafrost
- Optical Systems and Laser Technology
- Remote Sensing and Land Use
- Laser Design and Applications
- Laser-Matter Interactions and Applications
- Atmospheric aerosols and clouds
- Advanced Fiber Laser Technologies
- Adsorption and biosorption for pollutant removal
- Atmospheric chemistry and aerosols
- Advanced Decision-Making Techniques
- Collagen: Extraction and Characterization
- Laser-Plasma Interactions and Diagnostics
- Remote Sensing in Agriculture
- Environmental and Agricultural Sciences
- Advanced Optical Sensing Technologies
- Meteorological Phenomena and Simulations
- Fire effects on ecosystems
- Solar Radiation and Photovoltaics
- Landslides and related hazards
- Forest Insect Ecology and Management
- Mesoporous Materials and Catalysis
- Advanced Measurement and Detection Methods
Guangzhou Institute of Geochemistry
2024-2025
Chinese Academy of Sciences
2009-2025
China University of Petroleum, East China
2025
State Grid Corporation of China (China)
2024
University of Chinese Academy of Sciences
2020-2024
Northwest Normal University
2009-2024
Shanghai Institute of Optics and Fine Mechanics
2009-2023
Innovation Academy for Microsatellites of Chinese Academy of Sciences
2023
Shanghai Micro Satellite Engineering Center
2023
PLA Army Engineering University
2022
Snow cover is a sensitive indicator of global climate change, and optical images are an important means for monitoring its spatiotemporal changes. Due to the high reflectivity, rapid intense spatial heterogeneity mountainous snow cover, Sentinel-2 (S2) Landsat 8 (L8) satellite imagery with both resolution spectral have become major data sources. However, sensors more susceptible cloud two significant differences, making it challenging obtain beneath clouds shadows (CCSs). Based on our...
ABSTRACT Isoprene is a key reactive organic gas involved in aerosol formation. While biogenic isoprene from terrestrial plants has been extensively studied and recognized as major contributor to secondary (SOA), high levels of observed SOA, especially winter, cannot be fully explained by alone. In this study, we developed comprehensive bottom-up emission inventory for isoprene, incorporating both combustion sources modeling their contributions SOA China 2000 2016. Combustion-related...
Abstract This study aims to compare the catalytic performance of ZSM-5 and SAPO-34 zeolite catalysts in conversion ethanol. Through experiments conducted at different temperatures (773 K 673 K), it was found that initially exhibits superior propylene selectivity compared ZSM-5. However, yield on gradually decreases, while ethylene increases with time stream. density functional theory calculations were employed for investigation reaction mechanism. The results indicate catalyst surface favors...
Catalytic conversion of bioethanol is a promising production method for preparing light olefin. However, the role acid sites in different pore channels HZSM-5 catalyst not clear. The roles on ethanol to ethylene and propylene was investigated by density functional theory (DFT). results show that mainly occurs at site sinusoidal channel (T11) HZSM-5, straight (T10) catalyst. adsorption diffusion behaviors were simulated molecular dynamics method. propylene, with SiO2/Al2O3 = 128 more...
The Shannon information entropy theory is used to explain the recently proposed isobaric yield ratio difference (IBD) probe which aims determine nuclear symmetry energy. Theoretically, between uncertainties carried by isobars in two different reactions (ΔIn21), found be equivalent chemical potentials of protons and neutrons [the IBD probe, IB-Δ(βμ)21, with β reverse temperature]. From viewpoints entropy, physical meaning above potential interpreted ΔIn21 as denoting energy or density more...
Hexavalent chromium (Cr(VI)) is a serious environmental pollutant and human toxicant. Mammalian cells are very sensitive to chromate as they lack efficient detoxifying strategy, e.g., chromate-reducing genes that widely present in prokaryotes. To test whether introduction of prokaryotic gene into mammalian could render higher resistance, an Escherichia coli yieF was transfected HepG2 cells. The expression measured stably HepG2-YieF by quantitative RT-PCR found up-regulated 3.89-fold upon...
Ice, Cloud and Land Elevation Satellite-2/Advanced Topographic Laser Altimeter System 06 (ICESat-2/ATL06) data can be widely used for various applications, such as monitoring changes in glacier thickness. In this article, we use field surveys based on continuously operating reference system (CORS) unmanned aerial vehicles (UAVs) to verify the elevation accuracy of ATL06 product. A total 208 footprints were selected an assessment by obtaining 348 CORS global positioning (GPS) measurements...
Topographic correction has become very important in areas with rugged terrain. Many studies have suggested that a digital elevation model (DEM) an inadequate spatial resolution undesirably removes topographic effects. In this letter, scientific experiment was performed to explore the sensitivity of DEM scale based on remote sensing images simulated 5-m DEM. corrections different resolutions ranged from 5 500 m were for 30-500 estimate surface spectral reflectance. Five representative feature...
Abstract We compared canopy arthropod assemblages among overstory conifer and understory angiosperm species at Teakettle Experimental Forest in the Sierra Nevada California during 1998–2000. Arthropods were sampled from upper, middle, lower crown levels of one tree each four dominant (Jeffrey pine, sugar white fir, incense cedar), three plants major (California black oak, manzanita, white-thorn ceanothus) five replicate plots June Aug. 3 years to represent seasonal annual variation...
In rugged terrain, the accuracy of surface reflectance estimations is compromised by atmospheric and topographic effects. We propose a new method to simultaneously eliminate terrain effects in Landsat Thematic Mapper (TM) images based on 30 m digital elevation model (DEM) Moderate Resolution Imaging Spectroradiometer (MODIS) products. Moreover, we define normalized factor Bidirectional Reflectance Distribution Function (BRDF) convert sloping pixel into flat using Ross Thick-Li Sparse BRDF...
Downward surface shortwave radiation (DSSR) is the main energy source for most glacial melting, and Moderate Resolution Imaging Spectroradiometer (MODIS) Landsat Thematic Mapper (TM) data have been used extensively in inversion of input parameters estimating DSSR. However, valley glaciers under complex climatic conditions, values MODIS atmospheric products, especially aerosol are often invalid, TM images always saturated with snow. Furthermore, an estimation model based on optical satellite...
Abstract Frequency modulation (FM)-to-amplitude (AM) conversion is an important factor that affects the time–power curve of inertial confinement fusion (ICF) high-power laser facilities. This can impact uniform compression and increase risk damage to optics. However, dispersive grating used in smoothing by spectral dispersion technology will introduce a temporal delay spatially smooth target. The combined effect focusing lens equivalent Gaussian low-pass filter, which 8 GHz bandwidth reduce...
The downward surface shortwave radiation (DSSR) received by an inclined can be estimated accurately based on the mountain transfer model using digital elevation (DEM) and high-resolution optical remote sensing images. However, it is still challenging to obtain daily average DSSR affected atmosphere local topography in areas. In this study, spatial downscaling temporal extrapolation methods were explored separately estimate under clear-sky conditions Himawari-8, Sentinel-2 satellite products...
The self-focusing phenomenon of partially coherent beams (PCBs) was simulated using the complex screen method combined with split-step Fourier to solve nonlinear Schrödinger equation. Considering propagation Gaussian Schell-model in a medium as an example, suppression effects intensity, distance, and spatial coherence on small-scale were demonstrated. Simulations overall this compared existing literature demonstrate validity method. This can numerically analyze degree PCBs advance study...
A new high power laser facility with 8 beams and maximum output energy of one beam 5kJ/3.4ns/3ω has been performed operated since 2015. Combined together the existing facilities have constructed a multifunction experimental platform including multi-pulse width ns, ps fs active probing beam, which is an effective tool for Inertial Confinement Fusion (ICF) High Energy Density (HED) researches. In addition another peculiar prototype pushes 1ω to 16kJ in 5ns 17.5kJ 20ns flat-in-time...
We present a design of diffractive optical element to produce 3D chain along axis near the focus high numerical aperture (NA) lens by spatially modulating phase incoming vector beam. This can trap multiple individual particles in three dimensions at different planes focus. For flexibly controlling this special trapping system, we systematically analize factors affecting characteristics chain, such as polarization light, NA lens, and structure DOE.
A topographic correction method has been developed for TM images of rugged terrain, using ASTER stereo image pairs as a key input. The difference in solar radiance result topography always major barrier to the research on quantitative remote sensing areas. mountain radiative transfer model with strict physical meaning must be selected eliminate terrain effects. However, its development are restricted owing stringent requirements high precision and resolution digital elevation DEM; it is...