Double eigenvalues are not generic for matrices without any particular structure. A matrix depending linearly on a scalar parameter, Α + μΒ, will, however, generically have double eigenvalues for some values of the parameter ...

Passive air samplers (PAS) were deployed at 86 European background sites during summer 2006 in order (i) to gain further insight into spatial patterns of persistent organic pollutants (POPs) in European background air and, ...

Background: Reproductive behaviors (such as age of childbearing, parity, and breastfeeding prevalence) have changed over the same historical time period as PCB emissions and may produce intergenerational differences in ...