Habitat loss is a leading driver of biodiversity loss (Millennium Ecosystem Assessment 2005). Over the past century, environmental noise from human activities has increased rapidly in intensity and scale, representing a drastic yet often overlooked form of habitat loss (Andrew et al. 2002, McDonald et al. 2006, Slabbekoorn & Ripmeester 2008, Hildebrand 2009, Barber et al. 2010). This noise is p...

Typically, one expects that there are around x ∏ p6∈P, p≤x(1− 1/p) integers up to x, all of whose prime factors come from the set P . Of course for some choices of P one may get rather more integers, and for some choices of P one may get rather less. Hall [4] showed that one never gets more than e + o(1) times the expected amount (where γ is the Euler-Mascheroni constant), which was improved sl...

formation of the molecular complexes between meso-tetraphenylporphyrin (tpp) and the p-acceptors 2,3-dichloro-5,6-dicyanobenzoquinone (ddq) and tetracyanothylene (tcne) in chloroform solution was investigated spectrophotometrically. the formation constants of the resulting 1:1 molecular complexes were determined using the benesi-hildebrand and nash methods. the tpp-ddq proved to be more stable ...