Half-life,

• Real the story which you cannot sleep, a liberal translation
  http://plaza.rakuten.co.jp/szkhanio/diary/201103210000/
  Tap water standard of radioactive iodine, in infant the strict conversion… Yomiuri Shimbun Company

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  Estándar del agua de golpecito del yodo radiactivo, en niño la conversión terminante… Compañía de Yomiuri Shimbun
  
  
• Rain of radioactivity
  http://hatofx888.cocolog-nifty.com/blog/2011/03/post-911d.html
  But as for the radioactivity safe level, the one which does not get wet is better to the rain, is

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  Pero en cuanto al nivel seguro de la radiactividad, el que no consigue mojado es mejor a la lluvia, es
  
  
• Radioactivity memo, a liberal translation
  http://mlexp.way-nifty.com/life/2011/03/post-ecdd.html
  If you refer to level of the radioactivity, iodine 131 is larger markedly

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  Sujets de fournir rapidement les dernieres japonais.