The vanadium and tin contents of total diet samples collected in five Italian towns are given, and discussed in relation to literature data, their status as essential elements and their levels in human blood. Tin in blood was found to be below 2 ng ml−1 in a group of 14 subjects, and barely detectable even after oral consumption of 60 mg of tin.
G. Shaw and A. Williams, of Exeter University's Geography Department, examine the organization of the tourism industry in the county of Cornwall, UK, taking the town of Looe in south-east Cornwall as a specific example. Factors considered include the way in which tourism businesses are set up, how they obtain their start-up capital Nike Free Run 3 Toronto
and the types of person involved.
We display the big contribution of the Deck-coulombian effect for the πp interactions at high energy and very small four-momentum transfers. This effect is Nike Free Run 3 Womens calculated with a Williams-Weizsacker spectrum for the proton coulombian field and the Born approximation for the π±γ → π±p process.
This paper presents a selective survey of numerical representations of preference structures from the perspective of the representational theory of measurement. It reviews historical contributions to ordinal, additive, and expected utility theories, then describes recent contributions in these areas.