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7 papers found.
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Fast sparsity adaptive matching pursuit algorithm for large-scale image reconstruction

The accurate reconstruction of a signal within a reasonable period is the key process that enables the application of compressive sensing in large-scale image transmission. The sparsity adaptive matching pursuit (SAMP) algorithm does not need prior knowledge on signal sparsity and has high reconstruction accuracy but has low reconstruction efficiency. To overcome the low...

A time series of urban extent in China using DSMP/OLS nighttime light data

. Formal analysis: Dongsheng Chen. Funding acquisition: Qingfeng Guan. Methodology: Dongsheng Chen. Supervision: Qingfeng Guan. Validation: Dongsheng Chen. Visualization: Dongsheng Chen. Writing

Escherichia coli outer membrane protein F (OmpF): an immunogenic protein induces cross-reactive antibodies against Escherichia coli and Shigella

Diarrhea caused by pathogenic Escherichia coli (E. coli) is one of the most serious infectious diseases in humans and animals. Due to antibiotics resistance and the lack of efficient vaccine, more attention should be paid to find potential versatile vaccine candidates to prevent diseases. In this study, the sequence homology analysis indicated that OmpF from E. coli CVCC 1515...

Microstructure Modifications and Associated Corrosion Improvements in GH4169 Superalloy Treated by High Current Pulsed Electron Beam

The surface of the nickel-based superalloy GH4169 was subjected to high-current pulsed electron beam (HCPEB) treatment. The microstructural morphologies of the material were analysed by means of optical microscope (OP), scanning electron microscope (SEM), and transmission electron microscope (TEM). The results reveal that the irradiated surface was remelted and many craters were...

Effect of thermocycling on the microstructure of Ti-6Al-4V alloy in simulated low Earth orbit space environment

Shuheng Dong 0 Qingfeng Guan 0 0 School of Materials Science & Engineering, Jiangsu University , Zhenjiang 212013 , China The study of material damage and its physical mechanisms, the deep understanding of ... Science and Engineering, at Jiangsu University, as a research associate. His research focuses on microstructure of material, failure analysis and surface modification. Qingfeng Guan received his MSc degree

Surface Nanocrystallization of 3Cr13 Stainless Steel Induced by High-Current Pulsed Electron Beam Irradiation

The nanocrystalline surface was produced on 3Cr13 martensite stainless steel surface using high-current pulsed electron beam (HCPEB) technique. The structures of the nanocrystallized surface were characterized by X-ray diffraction and electron microscopy. Two nanostructures consisting of fine austenite grains (50–150 nm) and very fine carbides precipitates are formed in melted...

Deformation mechanism and microstructures on polycrystalline aluminum induced by high-current pulsed electron beam

In this paper, we present an experimental investigation of deformation twinning in polycrystalline aluminum exposed to high-current pulsed electron beam (HCPEB) irradiation. The residual tensile stress with about 102 MPa was introduced in the irradiated surface layer. The feature characteristic irradiated with various numbers of pulses was investigated. The formation of a large...