Letter: Fall-out from bomb tests.

Bomb fall-out 236U as a global oceanic tracer using an annually resolved coral core

Anthropogenic 236U (t½=23.4 My) is an emerging isotopic ocean tracer with interesting oceanographic properties, but only with recent advances in accelerator mass spectrometry techniques is it now possible to detect the levels from global fall-out of nuclear weapons testing across the water column. To make full use of this tracer, an assessment of its input into the ocean over the past decades i...

Getting nuclear-bomb fuel out of radiopharmaceuticals.

www.thelancet.com Vol 371 March 8, 2008 795 Aggressive marketing practices for breastmilk substitutes have been blamed for the decline of breastfeeding in the Philippines, where only 16·1% of Filipino infants aged 4–5 months are exclusively breastfed, half stop exclusive breastfeeding by the third week of life, and 13% are never breastfed (the lowest ever-breastfed rates in 56 countries). The D...

Bootstrap Out of Sample Predictive Evaluation Tests∗

We consider the comparison of multiple (possibly all misspecified) models in terms of their out of sample predictive ability. Typically, candidate models compared contain parameters estimated using recursive (or related rolling) estimation schemes. In some cases, predictive evaluation tests have a limiting distribution which is a functional over a Gaussian process, with a covariance kernel that...

Letter from . . .

Japanese Dietary Habits and the Fall-out Problem. Ii.

As data coming out from Japan on the level of contamination of food by radio-active fall-out from the nuclear weapon tests often differs remark ably from that obtained in other countries, an investigation was made to find the radio-ecological reason for it. We found less contribution of milk to total diet than European and American countries in Japan where various kinds of food of plant origin ...