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- Author or Editor: E. Krätzel x
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Abstract
In this article we consider three problems: 1. The asymptotic behaviour of the quadratic moment of the exponential divisor function. 2. The distribution of powerful integers of type 4. 3. The average number of direct factors of a finite Abelian group. We prove new estimates for the error terms in the asymptotic representations. For this purpose new estimates in the general four-dimensional divisor problem are needed.
Abstract
Inductively coupled plasma mass spectrometry (ICP-MS) has been applied to the assessment of urinary uranium excretion in non-exposed subjects. The sensitivity of the method is high enough to determine238U concentration in unprocessed urine in any subject. Data obtained so far show a significant increase of238U excretion with age and no differences between males and females.
