• Title/Summary/Keyword: Won-Sam

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The comparison of blood-brain barrier permeability of taurine and choline in senescence-accelerated mouse (SAM) and normal mouse.

  • Hwang, In-Won;Kang, Young-Sook
    • Proceedings of the Korean Society of Applied Pharmacology
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    • 2001.11a
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    • pp.90-90
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    • 2001
  • CCAP법을 이용하였을 때 SAM에서 taurine의 뇌 분포용적은 정상생쥐보다 85 % 감소하였다. 그리고 10, 15, 30초 동안의 뇌 분포용적은 linear regression을 나타내었다. 또한 intravenous injection technique의 결과, SAMP8에서의 sucrose space가 정상생쥐에 비하여 감소하였음을 알 수 있었다. 반면에 choline의 경우는 정상생쥐보다 SAMP8의 뇌분포용적이 73% 증가하였다.

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A Study on Piezoelectric and Strain Properties Using PMN-PT-PZ Ceramics with Ba Substitution (Ba 치환된 PMN-PT-PZ계 세라믹스의 압전 및 변위특성)

  • Ji, Seung-Han;Lee, Neung-Heon;Park, Kwang-Hyun;Park, Chong-Gook;Lee, Deok-Chool
    • Proceedings of the KIEE Conference
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    • 1993.07b
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    • pp.1113-1115
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    • 1993
  • Piezoelectric Actuator samples were fabricated using PMN-PT-PZ ceramics with Barium substitution, and the strain properties of them were investigated. The tartest Piezoelectric coefficient and electromechanical coupling coefficient were observed at the sintering temperature $1250^{\circ}C$, Barium 5mol%. In the case of Multilayered specimens, they showed considerable strain and small hysteresis than single round type.

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A Study on the Dielectric properties of polyphenylene Sulfide Film (폴리페닐렌 설파이드 필름의 유전특성에 관한 연구)

  • Song, Ho-Geun;Kim, Myoung-Won;Um, Gi-Ho;Kim, Sung-Ho;Jin, Mu-Ung
    • Proceedings of the KIEE Conference
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    • 1992.07b
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    • pp.871-874
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    • 1992
  • The dielectric constant and dissipation factor of polyphenylene sulfide(PPS) film were measured in range of -40$\sim$+125$^{\circ}C$. The result shows that characteristics of PPS films are superier to PP and PET films. It's dielectric constant was stable to the temperature of +125$^{\circ}C$.

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