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Experiences of Physical Activity Among People 80 Years of Age and Older; Physical Activity as a Means of Counteracting Disability, Balanced in Relation to Frailty.

The aim of this study was to describe experiences of physical activity, perceived meaning and importance of, and motives and barriers for participation in physical activity, among people 80 years of age and older. A qualitative design with focus-group methodology was used. The sample consisted of 20 community-living people aged 80-91 years. Data analyses revealed four themes: physical activity as

Hydrologiska forskningsbehov under 90-talet

Environmental problems and technical systems in the society are fundamentally related to hydrology. Hydrology is a very comprehensive concept. In fact, there are at least ten independent disciplines within hydrology. Classical hydrology is a descriptive science with the water balance equation as almost the only means of quantifying computations. Hydrodynamics have now to some extent been introduce

Analysis of triazines and associated metabolites with electrospray ionization field-asymmetric ion mobility spectrometry/mass spectrometry.

Triazines comprise an important pollutant class owing to continued use in certain countries, and owing to strong environmental persistence that leads to problems even in countries like Sweden where the use of triazines has been prohibited for some years. We investigated mass-selective detection for analysis of triazines. More specifically, we studied the background reduction and sensitivity enhanc

No seasonal sex ratio shift despite sex-specific fitness returns of hatching date in a lizard with genotypic sex determination

Sex allocation theory predicts that mothers should adjust their sex-specific reproductive investment in relation to the predicted fitness returns from sons versus daughters. Sex allocation theory has proved to be successful in some invertebrate taxa but data on vertebrates often fail to show the predicted shift in sex ratio or sex-specific resource investment. This is likely to be partly explained