introduction: mild cognitive impairment can be considered as an intermediate clinical state between normal cognitive aging and mild dementia. elderly people with this impairment represent an at-risk group for the development of dementia. the aim of this study was to investigate the prevalence of cognitive impairment in community-dwelling older adults by mini-mental state examination (mmse) and ...

Jacob and Lopez (2009) presents modeling results to support the conclusion that the per capita water quality impacts of urban development decrease significantly with population density. If true, this conclusion would have important implications for land use planning throughout the world. However, as discussed below, the modeling is based on questionable assumptions that likely bias the conclusi...

Recognizing that older adults are among the biggest consumers of medication, and the demographic group most likely to suffer an adverse drug reaction (ADR), this paper details the findings from a recent study on how older adults come to understand medication and its related use. Using a qualitative content analysis method, semi-structured interviews were conducted with 21 individuals from Briti...

We studied the ecological effects of mining-derived metals on riffle-dwelling benthic fishes at 16 sites in the Viburnum Trend lead-zinc mining district of southeast Missouri. Fish community attributes were compared to watershed features and to physical and chemical variables including metal concentrations in sediment pore water and fish. Ozark sculpin (Cottus hypselurus), rainbow darter (Etheo...

CrayŽ sh show many behavioral and morphological adaptations that serve to exploit chemical information in an aquatic environment. The primary chemosensory structure, the outer branch of the antennule, varies morphologically among species. A reasonable approach to the study of these variations is to compare morphological structures from crayŽ sh living in different environments. The potential of...

Literature data for 19 populations from 16 different studies of six species of stream-dwelling salmonids were analysed to test the hypothesis that density-dependent growth is stronger at low rather than at high population density. Fifteen of 19 populations showed evidence of a significant decrease in growth rate with increasing density. In 11 of these 15 populations, the pattern of density-depe...

the historian-theoretician christian norberg-schulz, examining the development of his ideas across 30 years. while norberg-schulz started out with intentions in architecture (1963), a work that was clearly influenced by structuralist studies, he soon shifted to a phenomenological approach with existence, space and architecture (1971), and then with genius loci (1980) and the concept of dwelling...