Visar resultat 1 - 5 av 226 avhandlingar innehållade ordet rodents.
1. On cholinergic mechanisms involved in ethanol reinforcement. A behavioral and neurochemical study in rodents
Sammanfattning : Alcohol (ethanol) and smoking (nicotine) are commonly co-abused in human beings. Drugs of abuse interact with the brain mesolimbic dopamine system, an important part of the brain reward system. These dopaminergic neurons originate in the ventral tegmental area and project to e.g. LÄS MER
Sammanfattning : The distribution of plant species and functional traits in alpine and arctic environments are determined by abiotic conditions, but also by biotic interactions. In this thesis, I investigate interactions among plants and herbivory effects on plant community composition and plant functional traits in three different regions: Swedish Lapland, Beringia (USA/Russia) and Finnmark (Norway). LÄS MER
Sammanfattning : This study deals with Sweden’s last outbreak of the plague with focus on Skåne, where the epidemic raged for three years - from late autumn 1710 to late autumn 1713. This was a time of war, crop failures as well as other simultaneously occurring epidemics. LÄS MER
Sammanfattning : xHypoxia and repopulation of tumour clonogens are two important determinants of treatment outcome in radiotherapy. In general clinical evidence indicates that loco-regional control may be reduced with long overall treatment times and for tumours with low pre-treatment levels of oxygen. LÄS MER
Sammanfattning : The geomorphological impact of small fossorial mammals (adapted to digging and living underground), such as rodents can be significant, and both their direct and indirect effects may contribute to landscape formation. This thesis is based on empirical field studies of two burrowing rodent species in sub-polar environments, namely invasive House mice (Mus musculus) on sub-Antarctic Marion Island and Norwegian lemmings (Lemmus lemmus) in sub-Arctic Abisko. LÄS MER