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Minghao Yu,Libin Ma,Kai Liu 한국물리학회 2019 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.75 No.2
Numerical simulations of argon inductively coupled plasmas (ICPs) were carried out by using the magneto-hydrodynamic equations and considering the different thermodynamic models inside the 10-kW ICP torch. The distribution characteristics of the flow velocity and the temperature were obtained and analyzed under thermodynamic equilibrium and nonequilibrium conditions, respectively. The effects of different typical discharge frequencies on the flow-field properties of the nonequilibrium argon ICP flow were also studied. The results indicate that the temperature distribution simulated by using the nonequilibrium model is more consistent with the experimental data than the one modeled by using the equilibrium model. The higher the discharge frequency is, the lower the maximum velocity and temperature of the nonequilibrium ICP flow are found to be.
Haisong Zhang,Tianci Ren,Meng Yu,Hailei Zhang,Libin Bai,Yonggang Wu,Sujuan Wang,Xinwu Ba 한국고분자학회 2016 Macromolecular Research Vol.24 No.8
Curcumin is the physiologically and pharmacologically active component of turmeric (Curcuma longa L.) with attractive fluorescent property. However, the applications in live cell imaging field are restricted mainly due to the water-insolubility and cytotoxicity. To overcome this problem, curcumin-incorporated glycopolymers are synthesized by free radical copolymerization in this study. The glycopolymers are well-characterized by infrared spectroscopy (IR), nuclear magnetic resonance (NMR), gel permeation chromatography (GPC), UV-Vis absorption spectroscopy and photoluminescence spectroscopy. Furthermore, obtained glycopolymers are assayed by MTT assay and cell imaging for supporting the potential bio application. The MTT result indicates that the introduction of carbohydrate units can reduce the cytotoxicity of curcumin unit. The live cell imaging investigations reveal that the curcuminincorporated glycopolymers are good candidates for cell imaging and may find broad applications in biological areas such as biological diagnosis, imaging, and detection.
Wenbin Zhang,Jie Min,Yun Wang,Yasong Pu,Jie Jiang,Dewei Guo,Libin Yu 대한기계학회 2022 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.36 No.6
In order to solve the problem that the measured axis trace is polluted by noise and can not reflect the real fault type of the turbine generator rotor, the adaptive local iterative filtering is applied to the purification of the axis trace of the generator rotor. As an adaptive mode decomposition method, adaptive local iterative filtering can adaptively decompose a complex original signal into a series of single components reflecting the wave nature of the signal, then, by calculating the correlation coefficient between the autocorrelation function of each decomposition component and the autocorrelation function of the original signal, the real intrinsic mode function is extracted, finally, the extracted intrinsic mode function is used to synthesize the signal to purify the axis trace. The simulation analysis and the purification results of the measured axis trace show that the adaptive local iterative filter can effectively avoid the false components in the decomposition process and is more favorable for extracting the signal features by introducing the Fokker-Planck equation to design the filter, compared with ensemble empirical mode decomposition, this method has better purification performance.
Li, Bin,Fang, Yuan,Zhang, Guoqing,Yu, Rongrong,Lou, Miaomiao,Xie, Guanlin,Wang, Yanli,Sun, Guochang The Korean Society of Plant Pathology 2010 Plant Pathology Journal Vol.26 No.3
The Burkholderia cepacia complex isolates causing bacterial fruit rot of apricot were characterized by speciesspecific PCR tests, recA-HaeIII restriction fragment length polymorphism (RFLP) assays, rep-PCR genomic fingerprinting, recA gene sequencing, and multilocus sequence typing (MLST) analysis. Results indicated that the isolates Bca 0901 and Bca 0902 gave positive amplifications with primers specific for B. vietnamiensis while the two bacterial isolates showed different recA-RFLP and rep-PCR profiles from those of B. vietnamiensis strains. In addition, the two bacterial isolates had a higher proteolytic activity compared with that of the non-pathogenic B. vietnamiensis strains while no cblA and esmR marker genes were detected for the two bacterial isolates and B. vietnamiensis strains. The two bacterial isolates were identified as Burkholderia seminalis based on recA gene sequence analysis and MLST analysis. Overall, this is the first characterization of B. seminalis that cause bacterial fruit rot of apricot.
Reclassification of Xanthomonas Isolates Causing Bacterial Leaf Spot of Euphorbia pulcherrima
Li, Bin,Yu, Rongrong,Shi, Yu,Su, Ting,Wang, Fang,Ibrahim, Muhammad,Xie, Guanlin,Wang, Yanli,Sun, Guochang The Korean Society of Plant Pathology 2011 Plant Pathology Journal Vol.27 No.4
Bacterial leaf spot of Euphorbia pulcherrima has been reported in many countries. Characterization by polyphasic approaches indicated that the isolates from India, USA and New Zealand could be distinguished based on rep-PCR profiles and gyrB phylogenies, while the Chinese isolates should be ascribed to Xanthomonas axonopodis pv. poinsettiicola.
First Report on Bacterial Heart Rot of Garlic Caused by Pseudomonas fluorescens in China
Li, Bin,Yu, Rong Rong,Yu, Shan Hong,Qiu, Wen,Fang, Yuan,Xie, Guan Lin The Korean Society of Plant Pathology 2009 Plant Pathology Journal Vol.25 No.1
An unreported disease of garlic was observed in commercial fields in Jiangsu province, China. The symptoms started as water soaked lesions at the base of the leaves. Later, water-soaked areas developed on stems and spread to the internal tissues, followed by yellowing and necrosis along leaf edges and soft rot of the stems. The causal organism isolated from symptomatic plants was identified as Pseudomonas fluorescens based on its biochemical and physiological characteristics and confirmed by the cellular fatty acid composition and Biolog data as well as 168 rRNA gene sequence analysis. The bacterial isolates caused similar symptoms when inoculated onto garlic plants. In addition, leek and shallot were susceptible to the P. fluorescens pathogen. However, the P. fluorescens pathogen failed to cause any symptoms when it was inoculated onto 15 other plants. This is the first report of a bacterial disease of garlic caused by P. fluorescens in China.