A spatial optimization model was formulated and used to maximize black-tailed prairie dog populations in the Badlands National Park and the Buffalo Gap National Grassland in South Dakota. The choice variables involved the strategic placement of limited additional protected habitat. Population dynamics were captured in formulations that reflected exponential population growth combined with the r...

Kuznetsov and Tsybakov [11] considered the problem of storing information in a memory where some of the cells are ‘stuck’ at certain values. More precisely, For 0 < r, p < 1 we want to store a string z ∈ {0, 1} in an n-bit memory x = (x1, . . . , xn) in which a subset S ⊆ [n] of size pn are stuck at certain values u1, . . . , upn and cannot be modified. The encoding procedure receives S, u1, . ...

A rapid and sensitive method has been developed for the determination of benzaldehyde, a toxic oxidation product of the widely used preservative and co-solvent benzyl alcohol in injectable formulations of non-steroidal anti-inflammatory drugs, diclofenac, vitamin B-complex and Voltaren injection solutions by using dispersive liquid-liquid microextraction followed by gas chromatography. This met...

Rhytidoponera violacea (Forel) (Hymenoptera: Formicidae) is a keystone seed disperser in Kwongan heathl and habitats of southwestern Australia. Like many myrmecochorous ants, little is known about the basic biology of this species. In this study various aspects of the biology of R. violacea were examined and the researchers evaluated how these characteristics may influence seed dispersal. R. vi...

Aim Fruit selection by animal dispersers with different mobility directly impacts plant geographical range size, which, in turn, may impact diversification. Here, we examine the interaction between fruit colour, size and diversification rate palms testing two hypotheses: (1) species colours attractive to birds have larger sizes due high dispersal ability (2) disperser affects whether small or l...