Karlsson. A. 1996. Site vrevaration of abandoned fields and earlv establishment of naturallv and direct-seeded birch in Sweden. Studia Forestalia Suecica 199, 25 pp. ISSN 0039-3150, ~ S B N 91-576-5152-3. Field experiments were carried out at four sites in Sweden to investigate the possibility of establishing downy birch (Betula pubescens Ehrh.) and silver birch (Betula pendula Roth) on abandon...

A cross-sectional survey of agricultural areas, combined with routinely monitored mosquito larval information, was conducted in urban Dar es Salaam, Tanzania, to investigate how agricultural and geographical features may influence the presence of Anopheles larvae. Data were integrated into a geographical information systems framework, and predictors of the presence of Anopheles larvae in farmin...

Received for Publication July 27, 1984 INTRODUCTION The time and amount of nitrogen (N) uptake affects both root and extractable sucrose yield of sugarbeets (Beta Vulgaris L.). Either excessive or late N fertilizer applications and subsequent plant N uptake from applied•or residual N sources cause an increasing proportion of the photosynthate to be used for top growth at the expense of both roo...

For an old-growth forest edge in the Sierra Nevada, we quantified the extent of edge effects from a group selection harvest. Across transects from the interior of the old-growth forest through the group selection opening, we quantified changes in resource availability (light, soil moisture, and seedbed) and vegetation composition (cover, richness). We found a steep change in light availability ...

Caring theories are the description and conceptualization of the care that is given in caring practise by nurses and other professional caregivers with the aim of verbalizing and communicating caring phenomena. Intermittently, a theory -practice gap is given expression- that theory does not go along with clinical practice in caring.The aim of this study was an investigation into the possible di...

In May 1892, Belgium adopted a law on the exercise of hypnotism. The signing of the law constituted a temporary endpoint to six years of debate on the dangers and promises of hypnotism, a process of negotiation between medical doctors, members of parliament, legal professionals and lay practitioners. The terms of the debate were not very different from what happened elsewhere in Europe, where, ...

In the fall of 1935, Albert M. Grass and Ellen H. Robinson both came to the Department of Physiology at Harvard Medical School (HMS). This entirely fortuitous confluence of their lives led to their marriage, to a commercial endeavor—the Grass Instrument Company—that would provide equipment of high quality to neuroscientists and other physiologists for over half a century, and finally to the for...