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- 저자 : Lirong Zeng (검색결과 3 건)
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Zeng, Lintao,Zeng, Hongyan,Jiang, Lirong,Wang, Shan,Hou, Ji-Ting,Yoon, Juyoung American Chemical Society 2019 ANALYTICAL CHEMISTRY - Vol.91 No.18
<P>A fluorescent chemosensor has been developed for discriminative detection of phosgene and a nerve agent mimic diethyl chlorophosphate (DCP), which was comprised of an anthracene-carboxyimide fluorophore and <I>o</I>-phenylenediamine (OPD) reaction site. Upon phosphorylation of OPD, the chemosensor displays an obvious fluorescence turn-on response toward DPC at 588 nm with instant response and a low detection limit (88 nM). By contrast, the chemosensor exhibits a colorimetric and fluorescence enhancement response at 500 nm toward phosgene with fast response (<2 min), high selectivity, and a low detection limit (72 nM). Furthermore, chemosensor-loaded test membrane was fabricated for real-time, portable and efficient discriminative detection of trace amounts of gaseous phosgene and DCP vapor with different optical responses.</P> [FIG OMISSION]</BR>
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Behavior of Al/Cu/Ti electrodes in surface acoustic wave filter at high power
Qi Li,Sulei Fu,Zengtian Lu,Lirong Qian,Rui Wang,Tongjin Chen,Cheng Song,Fei Zeng,Weibiao Wang,Feng Pan 한국물리학회 2019 Current Applied Physics Vol.19 No.4
Driven by the need for high data-rates and continuous reduction in device size, surface acoustic wave filters are required to work under increasingly high power. In this work, a series of 2.7 GHz surface acoustic wave filters with Al/Cu/Ti three-layered electrode were fabricated and loaded with high power. Those three-layered electrodes showed weaker texture but higher stability than Al-Cu alloy electrode at high power. Morphologies, microstructures and elements distribution in cross section of fingers were analyzed carefully before and after high power loading. Results show that the circular-arc-shaped outline of fingers were appeared in most samples after high power loading, and the number of gains in the finger cross section changed from some into several with much larger volume. The features of distribution of Cu atoms also coincided with these microstructures. By finite element method and phase diagram analysis, the higher stability of Al/Cu/Ti three-layered electrodes are attributed to precipitation of θ-CuAl2 in the bottom edge of electrode finger and Cu-doped α-Al in the center top.
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Role of Ubiquitination in Plant Innate Immunity and Pathogen Virulence
Gautam Shirsekar,Liangying Dai,Yajun Hu,Xuejun Wang,Lirong Zeng,Guo-Liang Wang 한국식물학회 2010 Journal of Plant Biology Vol.53 No.1
Plant diseases are a major constraint for stable crop production in the world. Plants are constantly threatened by different pathogens and have developed an array of mechanisms to defend themselves. A growing body of evidence indicates that ubiquitination, which is one of the most important cellular processes for protein modification in eukaryotic organisms, is involved in the regulation of host defense signaling. Pathogens also exploit ubiquitination to block or interfere with plant defenses. Recent studies in a few model plants have demonstrated that ubiquitination plays a critical role in plant–pathogen interactions that lead either to plant resistance or to successful pathogen invasion of the plant host. This review discusses recent findings about the functions of ubiquitination in host defense and pathogen invasion.
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