Measurement of bacterial water pollution and the log‐normal distribution (note)
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چکیده
منابع مشابه
Lognormal distribution of precipitable water in Hawaii
[1] We use four-year time series of precipitable water (PW) and zenith neutral delay (ZND) derived from a GPS network in Hawaii to show that the statistical distributions of these quantities are closely approximated by the lognormal distribution. The long term average and median values of precipitable water decline exponentially with height, or very nearly so. The arithmetic standard deviation ...
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15 صفحه اولAnalysis of Hybrid Censored Data from the Lognormal Distribution
The mixture of Type I and Type II censoring schemes, called the hybrid censoring. This article presents the statistical inferences on lognormal parameters when the data are hybrid censored. We obtain the maximum likelihood estimators (MLEs) and the approximate maximum likelihood estimators (AMLEs) of the unknown parameters. Asymptotic distributions of the maximum likelihood estimators are used ...
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Background: The existence of fluoride ion in potable water has distinctive effects on human health. Fluoride is attracted by positively charged calcium in teeth and bones due to its strong electro-negativity which results in dental, skeletal, and non-skeletal forms of xuorosis and associated health complaints in children as well as adults. Methods: Water samples from groundwater used for dri...
متن کاملEvaluation and Mapping Spatial Distribution of Copper Pollution in Soil and Water of Vineyard Garden
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ژورنال
عنوان ژورنال: New Zealand Journal of Marine and Freshwater Research
سال: 1974
ISSN: 0028-8330,1175-8805
DOI: 10.1080/00288330.1974.9515525