Context. Nest-site selection can influence nesting success, and thus population dynamics, of many species of groundnesting birds. Despite the economic importance as a game species, populations of northern bobwhites have been declining throughout the southernUnited States. This paper reports the nesting ecology of northern bobwhites (Colinus virginianus) on Babcock-Webb Wildlife Management Area,...

This paper studies the interplay between two groups of countries, large and small, which compete sequentially on corporate taxes environmental regulations to attract imperfectly mobile firms. We show that in general, small countries undercut terms taxes. The choose be both tax pollution havens when they are less concerned about environment than capital integration is low. never act as havens. F...

the aim of this research was to investigate the location and accessibility of urmia sport centers concerning national and international standards. the research was applicable, analytical and descriptive. statistical population consisted of all sport centers of urmia physical education department. statistical sample equaled the statistical population (29 sport centers). data were collected by a ...

Age-related macular degeneration (AMD), a progressive condition that is untreatable in up to 90% of patients, is a leading cause of blindness in the elderly worldwide. The two forms of AMD, wet and dry, are classified based on the presence or absence of blood vessels that have disruptively invaded the retina, respectively. A detailed understanding of the molecular mechanisms underlying wet AMD ...