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Mechanisms of Brain Damage Following Focal Cerebral Ischemia: Changes in Ion Homeostasis and the Importance of Free Radical Formation

Popular Abstract in Swedish Svensk sammanfattning Slaganfall (stroke), hjärtstillestånd eller överdosering av insulin är tillstånd som leder till en minskning av syre- och/eller glukos till hjärnvävnaden. Då tillförseln av glukos och syrgas minskar, kan cellerna inte längre upprätthålla en normal energiproduktion. Eftersom en stor del av energin går åt till bevara den spänning som finns över cellIn this thesis mechanisms of neuronal damage were investigated in an experimental stroke model i.e focal ischemia. The influence of SD-induced calcium transients on neuronal damage were studied in animals with reduced energy supply. The influence of bioenergetic failure on K+e concentration and Ca2+e homeostasis were also investigated in transient focal ischemia. Moreover, the free radical formati

Statistical Physics of Protein Folding and Aggregation

The mechanisms of protein folding and aggregation are investigated by computer simulations of all-atom and reduced models with sequence-based potentials. A quasi local Monte Carlo update is developed in order to efficiently sample proteins in the folded phase. A small helical protein, the B-domain of staphylococcal protein A, is studied using a reduced model. In the thermodynamically favoured topo

On the Value of Pictures in Verbal Cognition

Popular Abstract in Swedish Syftet med avhandlingen var att analysera värdet av bilder i ett antal kognitiva uppgifter som framförallt är av verbal natur. Avhandlingen omfattar tre studier, med vardera tre experiment. I den första studien visades automatiskt inflytande från bilder (ansiktsuttryck) på en affektiv bedömning av ord som positiva eller negativa. I den integrerade presentationen av ord The aim of this thesis was to analyze the value of pictures in a number of cognitive tasks that are predominantly verbal in nature. Three studies, with three experiments each, are included in the thesis. The first study found automatic interference effects from pictures (facial expressions) on the affective evaluation of words. In the Stroop-like presentation of integrated picture-and-word stimuli

Trace Element Similarity Groups in North Florida Spanish Moss

The elemental composition of 10 samples of Spanish moss Tillandsia usneoides L. collected mainly in forested areas near Tallahassee, Florida, has been compared to the composition of the ambient aerosol particle background in the forest measured as a function of particle size. For forest samples, moss composition is similar to the composition of aerosol particles greater than about 0.5-μm diameter

The Continuum of words, voice and music.

This text offers some principal and methodogical issues on studies of timbre in words, music and vocal performance. Timbral relationships between word and music can be conceptualized as a continuum following an fictive axis running from meaning and timbre of words, through melody and music to performance. Sometimes the order might be different, but the ingredients will always be there. To get a gr