菌数密度の点推定値としての最確数の算定法とその問題点 A Critical Review on the Methods to Calculate MPN as a Point Estimate of Bacterial Density

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抄録

The reliability of MPN as a point estimate of the MPN without exclusion to the ordinary two dilution schemes is of interest. Three different sources of the error have been, for years, discussed and treated for obtaining reliable MPN values: improbability of the output quanta, truncation of quantal level to three or so, and positive bias in the MPN value. Thus, first, the two intrinsically different ways of estimating improbability are critically reviewed, and another new way proposed by Kohno and Fukunaga is introduced. Second, the truncation of quantal level to three or so is discussed. Consequently, the use of a program available for computing MPN as well as estimating the improbability is claimed. Thirdly, two different ways of treating the bias in the MPN are introduced and criticized. In every case, the procedure is observed exactly and, if needed, examined through implementing C programs on a Unix machine.

収録刊行物

  • 水環境学会誌 = Journal of Japan Society on Water Environment  

    水環境学会誌 = Journal of Japan Society on Water Environment 22(5), 365-372, 1999-05 

    公益社団法人 日本水環境学会

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各種コード

  • NII論文ID(NAID)
    10004452313
  • NII書誌ID(NCID)
    AN10372439
  • 本文言語コード
    JPN
  • 資料種別
    REV
  • ISSN
    09168958
  • NDL 記事登録ID
    4728797
  • NDL 雑誌分類
    ZN5(科学技術--建設工学・建設業--都市工学・衛生工学)
  • NDL 請求記号
    Z16-1045
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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