• Title/Summary/Keyword: nanosensor

Search Result 126, Processing Time 0.025 seconds

Size Dependence of the Photo- and Cathodo-luminescence of Y2O2S:Eu Phosphors

  • Sung, Hye-Jin;Ko, Ki-Young;Kim, Hyun Soo;Kweon, Seok-Soon;Park, Jong-Yun;Do, Young-Rak;Huh, Young-Duk
    • Bulletin of the Korean Chemical Society
    • /
    • v.27 no.6
    • /
    • pp.841-846
    • /
    • 2006

  • $Y_2O_2S$:Eu phosphors were synthesized via solid-state reactions. $Y_2O_2S$:Eu phosphor particles of various sizes were obtained by varying the firing temperature and firing time. The photoluminescence properties of these $Y_2O_2S$:Eu phosphors were examined. In addition, the cathodoluminescence properties of the $Y_2O_2S$:Eu phosphors were examined for applied voltages of 3-8 kV. The relationship between the luminescence intensity and particle size of the$Y_2O_2S$:Eu phosphors was investigated. The photoluminescence and cathodoluminescence of the $Y_2O_2S$:Eu phosphors are affected differently by variations in particle size.

  • https://doi.org/10.5012/bkcs.2006.27.6.841 인용 PDF KSCI

Biochemical characterization of the lipid-binding properties of a broccoli cuticular wax-associated protein, WAX9D, and its application

  • Ahn, Sun-Young;Kim, Jong-Min;Pyee, Jae-Ho;Park, Heon-Yong
    • BMB Reports
    • /
    • v.42 no.6
    • /
    • pp.367-372
    • /
    • 2009

  • In this study, we showed that WAX9D, a nonspecific lipid-transfer protein found in broccoli, binds palmitate (C16) and stearate (C18) with dissociation constants of 0.56 ${\mu}M$ and 0.52 ${\mu}M$, respectively. WAX9D was fused to thioredoxin protein by genetic manipulation to enhance its solubility. The data revealed strong interaction of Trx-WAX9D with palmitate and stearate. The dissociation constants of Trx-WAX9D for palmitate and stearate were 1.1 ${\mu}M$ and 6.4 ${\mu}M$, respectively. The calculated number of binding sites for palmitate and stearate was 2.5 to 2.7, indicating that Trx-WAX9D can bind three molecules of fatty acids. Additionally, Trx-WAX9D was shown to inhibit the apoptotic effect of palmitate in endothelial cells. Our data using Trx-WAX9D provide insight into the broad spectrum of its biological applications with specific palmitate binding.

  • https://doi.org/10.5483/BMBRep.2009.42.6.367 인용 PDF