Results 261 to 270 of about 19,929,112 (296)

The “most probable number” estimate and its confidence limits

Water Research, 1993
Abstract The dilution method is used to obtain an indirect count of microorganisms, e.g. fecal bacteria commonly used as human contamination indicators, in a suspension. The Most Probable Number estimate provides a quantification of dilution method results. This estimate is commonly obtained by using Poisson distribution. Although the use of binomial
Benoit Beliaeff, Jean-Yves Mary
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Note on the Most Probable Number of Partons in Parton Models

Physical Review D, 1971
From analysis of the inelastic $e\ensuremath{-}p$ scattering data it is found that an important feature of the parton probability function $P(N)$ is that it should be peaked around some small number of partons. The most probable number of partons is prognosticated to be around 4.5.
C. W. Gardiner, D. P. Majumdar
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An interactive microcomputer program for the computation of most probable number

Journal of Microbiological Methods, 1984
Abstract An interactive computer program for the rapid computation of Most Probable Numbers (MPN) with 95% confidence intervals and goodness-of-fit, is presented. The program, written in ‘MICROSOFT BASIC’ employs an iterative algorithm based on a modification of the Newton-Raphson method and accomodates any number of replicates up to ten dilutions ...
M.T. MacDonell, E. Russek, R.R. Colwell
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A new technique for most-probable-number counts of Rhizobia

Plant and Soil, 1972
MPN (most-probable-number) counts of rhizobia by using legumes grown in plastic pouches were essentially equal to pour-plate counts. By using plastic pouches, 60 growth units could be placed in 684 cm2 of bench space, and only 20 minutes were required to prepare and seed 60 plastic pouches for inoculations.
R. W. Weaver, L. R. Frederick
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Calculating Most Probable Numbers in Coli‐Aerogenes Analyses

Journal AWWA, 1940
increasing use of the coli-aerogenes test to estimate the pollution of waters has been paralleled by the development of the mathematical theory for calculating "most probable numbers" from fermentation tube results. This development has been traced by J. K. Hoskins (1, 2, 3) and need not be reviewed here.
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Most-probable-number technique for the enumeration of aromatic degraders in natural environments

Microbial Ecology, 1977
A most-probable-number (MPN) method is described for the enumeration of heterotrophic populations capable of utilizing chlorinated and nonchlorinated benzoates and phenols as sole carbon sources. A correlation coefficient of 0.91 was obtained between the numbers determined by the MPN technique and the standard plate count. The MPN method gave realistic
M J, Digeronimo, M, Nikaido, M, Alexander   +2 more
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Titer — und Most Probable Number Technik

1984
Die Bestimmung niedriger Keimgehalte durch Koloniezahlung ist, wie bereits beschrieben, nur bei filtrierbaren Flussigkeiten mittels Membranfiltrations-Verfahren moglich. Fur einen grosen Teil der Lebensmittel ist diese Zahlmethode jedoch nicht anwendbar.
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The Most Probable Numbers of B. Coli in Water Analysis

Journal AWWA, 1933
The expression of the number of B. coli in samples of water from the results of analyses by the dilution method has been the subject of much discussion. Phelps (1) suggested the procedure of expressing the number as the reciprocal of the smallest portion in a geometrical series of dilutions which gives a positive test for B.
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Estimation of most probable number of Salmonella in retail samples of minced pork

International Journal of Food Microbiology, 1990
The number of salmonellae in 174 samples of minced pork was determined by the Most Probable Number (MPN) method in two separate laboratories. The material examined was taken from a collection of samples which were Salmonella positive in an earlier study.
H J, Sinell, O, Pietzsch, H, Klingbeil, M, Benner   +3 more
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Uncertainty in most probable number calculations for microbiological assays.

Journal of AOAC International, 2004
Microbiological assays commonly use incubations of multiple tubes in a dilution series, and microorganism concentration is read as a most probable number (MPN) in standard tables for the observed pattern of positive tubes. Published MPN tables differ, sometimes substantially, because of use of approximate MPN calculation procedures, different rounding ...
Graham B, McBride, Judith L, McWhirter, Matthew H, Dalgety   +2 more
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