The present note is devoted to establish some extremal results for the zeroth-order general Randi'{c} index of cacti, characterize the extremal polyomino chains with respect to the aforementioned index, and hence to generalize two already reported results.

A Banach lattice algebra is a Banach lattice, an associative algebra with a sub-multiplicative norm and the product of positive elements should be positive. In this note we study the Arens regularity and cohomological properties of Banach lattice algebras.

OBJECTIVE To compare prescribing patterns between a group of fundholding practices and a group of non-fundholding practices in north east Scotland using a method which provides more accurate statements about volumes prescribed than standard NHS statistics. DESIGN The pharmacy practice division of the National Health Service in Scotland provided data for selected British National Formulary sec...

background: increasing of chronic patients who need permanent support andstaff who are daily exposed to psychological stress need to hospitals that note to health promotion programs. healthpromoting hospitals (hph)was expressed by the world health organization in the 1990s. so a large numberof hospitals in the world have implemented health promotion programs. but hospitalsin iran not implement ...

The mechanisms driving the spatial patterns of species richness and composition are essential to the understanding of biodiversity. Numerous studies separately identify the contributions of the environment (niche process) and space (neutral process) to the species richness or composition at different scales, but few studies have investigated the contributions of both types of processes in the t...

We investigate the structure of positions obtained by turning the Skewb. These ‘legal’ positions are singled out among the positions obtained by disassembling and arbitrarily reassembling the Skewb. The set of legal positions is modelled as a group, the ‘Skewb group’, that is characterised as the kernel of a group homomorphism. Also, the Skewb group is shown to be isomorphic to a group of known...