• Title/Summary/Keyword: Makoto

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In vivo micronucleus assay - historical review and current improvement

  • Hayashi, Makoto
    • Proceedings of the Korean Society of Toxicology Conference
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    • 2003.10b
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    • pp.24-25
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    • 2003
  • Genotoxicity plays an important role for the safety evaluation of chemicals. When the carcinogenicity is evident on a chemical, the threshold can be estimated only when genotoxic mechanism does not operate for carcinogenesis otherwise threshold cannot be set. Without genotoxic mechanism- non-genotoxic carcinogen-threshold can be estimated but with genotoxic mechanism-genotoxic- carcinogen-it cannot be estimated.(omitted)

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GENERATION OF MAGNETIC FIELDS BY TEMPERATURE GRADIENTS

  • OKABE NOBUHIRO;HATTORI MAKOTO
    • Journal of The Korean Astronomical Society
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    • v.37 no.5
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    • pp.547-551
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    • 2004
  • We showed that magnetic fields are generated in the plasma which have the temperature inhomogeneities. The mechanism is the same as the Weibel instability because the velocity distribution functions are at non-equilibrium and anisotropic under the temperature gradients. The growth timescale is much shorter than the dynamical time of structure formation. The coherence length of magnetic fields at the saturated time is much shorter than kpc scale and then, at nonlinear phase, become longer by inverse-cascade process. We report the application of our results to clusters of galaxies, not including hydrodynamic effects.

EAST ASIA VLBI CONSORTIUM AND ITS COMMITTEE

  • INOUE MAKOTO
    • Journal of The Korean Astronomical Society
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    • v.38 no.2
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    • pp.77-79
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    • 2005
  • We had the first committee meeting of the East Asia VLBI Consortium during the EAMA6 meeting held in Seoul. A VLBI network composed of telescopes in the East Asia region could provide extreme properties, and the coordination of them has been expected. The Committee of the East Asia VLBI Consortium is a standing committee to promote activities of the consortium, in which participating countries at present are China, Japan, and Korea over eight institutes/observatories. Here we introduce the Consortium and Committee.