• Title/Summary/Keyword: SOON-100

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Antimutagenic Effect of Bacillus natto Isolated from Natto

  • Yun, Soon-Il
    • Journal of Applied Biological Chemistry
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    • v.48 no.3
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    • pp.133-137
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    • 2005

  • In vitro antimutagenicity of Bacillus natto islolated from Natto, Japanese traditional fermented food, was investigated using umu-test. Mutagenicity of S9-activated metabolites of Trp-P-2 and IQ for Salmonella typhimurium TA 1535/pSK1002 was remarkably inhibited by addition of bacterial cells and their cytoplasmic fraction. Desmutagenicity by cytoplasmic fraction increased with increasing concentration of the fraction. Bioantimutagenic effect of cytoplasm on Salmonella typhimurium SD-100 did not show bioantimutagenic activity against mutated bacterial cells induced by Trp-P-2. Cytoplasmic fraction exhibited 17% bioantimutagenicity due to desmutation caused by IQ.

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Dependence of CCFL Characteristics on Ambient Temperatures

  • Kim, Jeong-Eui;Lee, Soon-Seok;Lim, Sung-Kyoo
    • 한국정보디스플레이학회:학술대회논문집
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    • 2003.07a
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    • pp.646-648
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    • 2003

  • The electrical and optical characteristics of the cold cathode fluorescent lamps (CCFL) were measured and investigated under the wide ambient temperatures ranging from $-30^{\circ}C$ up to $+100^{\circ}C$. The highest luminous efficiency of the CCFL of 55 lm/W was obtained at the ambient temperature of $50^{\circ}C$.

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CHARATERISTIC IMPROVEMENT OF 5 PHASE STEP MOTOR BY USING MICRO-STEP DRIVER IN X-Y AXIS SOLDERING MACHINE

  • Park, Chul-Soon;Kim, Sung-Hoon;Ahn, Ho-Kyun;Park, Seung-Kyu
    • Proceedings of the KIPE Conference
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    • 1998.10a
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    • pp.97-100
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    • 1998

  • In this paper, micro step driving method is used for the high performance motion control and low vibration and low noise in an X-Y axis soldering machine for factory automation. The improvement of the electrical and mechanical driving characteristic of a stepping motor is achieved by applying microstep driver.

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Enhancement of Dissolution from Pharmaceutical Preparation of Hydrophobic Drugs ( II ) -Dissolution Rates of Sulpiride-Polyethylene Glycol Coprecipitates- (Sulpiride-Polyethylene Glycol Coprecipitates의 용출속도(溶出速度)에 관한 연구(硏究))

  • Ku, Young-Soon
    • Journal of Pharmaceutical Investigation
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    • v.13 no.3
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    • pp.100-103
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    • 1983

  • Coprecipitates of sulpiride and polyethylene glycol (PEG) decrease the dissolution rate of sulpiride and the degree of decrease is reversely proportional to molecular size of PEG and proportional to increase of PEG ratios in coprecipitates. The physical mixtures of sulpiride and PEG increase the dissolution rate of sulpiride.

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