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RISS 인기검색어
- 검색키워드
- 저자 : Qiong-xian Yan (검색결과 3 건)
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Yan Li,Tan Lv,Fang-Xian Zhao,Xiao-xue Lian,Yun-ling Zou,Qiong Wang 대한금속·재료학회 2016 ELECTRONIC MATERIALS LETTERS Vol.12 No.3
Loading noble metal and exploring suitable morphology to achieveexcellent gas-sensing performance is very crucial for the fabrication ofgas sensors. We have successfully synthesized Au-loaded ZnO (Au/ZnO) nanospindles (NSs) through a really facile procedure involving aprecipitation and subsequent microwave irradiation. The as-preparedproducts have been characterized by X-ray diffraction (XRD), scanningelectron microscope (SEM). The formation and gas-sensing mechanismof Au/ZnO NSs were discussed. The SEM micrographs revealed aninteresting morphological evolution of the Au/ZnO NSs with Auloadingcontent ranging from 0 at. % to 7 at. %. The nanostructures wereemployed for gas-sensing measurement toward various gases. Itindicated that the Au/ZnO NSs based sensor showed a highly enhancedresponse (226.81) to 400 ppm acetone gas at a relatively low workingtemperature (270°C), and exhibited a fast response (1 s) and recoveryspeed (10 s). The highly enhanced acetone gas sensitivity of Au/ZnONSs based sensor could be attributed to its enhanced polarity owing tothe peculiar morphology, Schottcky barriers, as well as catalytic effect ofAu NPs.
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Hui-Ming Xiang,Zhen Chen,Xian-Wei Li,Yan-Qiong Guo,Xian-Chun li,Rui-Yan Ma 한국응용곤충학회 2019 Journal of Asia-Pacific Entomology Vol.22 No.4
Grapholita molesta (Busck) (Lepidoptera: Tortricidae) is a notorious pest of many Rosaceae crops worldwide. Enhancement of trap efficiency of its sex pheromone was devised by addition of E-β-ocimene and E-β-farnesene. The addition of E-β-ocimene or E-β-farnesene to sex pheromone increased electroantennogram response of male G. molesta compared to sex pheromone alone. Blend of pheromone and E-β-ocimene or E-β-farnesene in 1:0.1 increased the upwind flight and landing behaviors. Furthermore, field experiments showed that sex lures with Eβ-ocimene, or /and E-β-farnesene, enhanced trapping efficiency compared to sex pheromone alone. These results may provide the basis for the development of efficient pest management systems against G. molesta using plant volatiles and insect sex pheromones.
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Ling Chen,Wen-jun Xiao,Qiong-xian Yan,Zhi-hua Gong,Sheng Zhang,Li Zeng,Ming Yang,Yan-he Zhou 대한약학회 2020 Archives of Pharmacal Research Vol.43 No.8
The aim of this study is to evaluate the antiinflammatory and protective eff ects of L -theanine in infl ammatorybowel disease (IBD) and to identify the underlyingmolecular mechanisms. Rats were pre-treated with L -theanineat 0, 50, 200, or 800 mg/kg/day. IBD was induced inrats using dextran sulfate sodium (DSS). Histopathologicalanalysis suggests that L -theanine can suppress DSS-inducedIBD with signifi cant inhibition of infl ammation in large andsmall intestinal tissues. Moreover, the 200 mg/kg/day L -theanine-treated DSS group had higher body and small intestineweights, a lower disease activity index and expression ofinfl ammatory factors than the DSS group without pre-treatment. In RNA sequencing and tandem mass tag labelinganalyses, large number of mRNAs and proteins expressionlevel diff ered when compared with the DSS-induced ratswith and without 200 mg/kg/day L -theanine pre-treatment. Moreover, Kyoto Encyclopedia of Genes and Genomes pathwayanalysis indicates the anti-infl ammatory activities ofL -theanine in DSS-induced IBD, with a high representationof genes in “Cholesterol metabolism” and “Retinol metabolism”pathways. Analysis of protein–protein interaction networksfurther indicates the involvement of these two pathways. These studies suggest that medium-dose L -theaninepre-treatment could ameliorate DSS-induced IBD throughmolecular mechanisms involving cholesterol and retinolmetabolism.
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