Sökning: "rodents"

Visar resultat 1 - 5 av 210 avhandlingar innehållade ordet rodents.

  1. 1. On cholinergic mechanisms involved in ethanol reinforcement. A behavioral and neurochemical study in rodents

    Författare :Anna Larsson; Göteborgs universitet.; Gothenburg University.; [2004]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Acetylcholine; Dopamine; Ethanol; Locomotor activity; Microdialysis; Nicotine; Nicotinic acetylcholine receptors; Rodents; Reward;

    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

  2. 2. Effects of herbivory on arctic and alpine vegetation

    Detta är en avhandling från Stockholm : Botaniska institutionen

    Författare :Åsa Lindgren; Ove Eriksson; Jon Moen; Anders Angerbjörn; Ingibjörg S Jónsdóttir; [2007]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; herbivory; reindeer; rodents; functional traits; plant species composition; arctic; alpine; tundra; seed limitation; Carex bigelowii; NATURAL SCIENCES Biology; NATURVETENSKAP Biologi; Plant Ecology; växtekologi;

    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

  3. 3. Pestens gåta : farsoter i det tidiga 1700-talets Skåne

    Detta är en avhandling från Historiska Media

    Författare :Bodil Persson; [2001]
    Nyckelord :HUMANIORA; HUMANITIES; pestilential fevers; diagnosis; symptoms; pattern of distribution; demography; causes of death; burial records; epizootics; rats; rodents; lice; fleas; regional and local analysis; scurvy; epidemic typhus fever; measles; Plague; smallpox; plague vectors; Modern history up to circa 1800 ; Tidig modern historia till ca. 1800 ; Public health; epidemiology; Folkhälsa; epidemiologi;

    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

  4. 4. ARCON in experimental and clinical radiotherapy

    Detta är en avhandling från Historiska Media

    Författare :Ana Maria Rojas Callejas; Björn Zackrisson; René-Olivier Mirimanoff; [2004]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Oncology; ARCON; tumours; normal tissues; radiosensitization; carbogen; nicotinamide; repair inhibition; therapeutic gain; rodents; humans; Onkologi; MEDICINE Surgery Oncology; MEDICIN Kirurgi Onkologi; onkologi; Oncology;

    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

  5. 5. The zoo-geomorphological impact of fossorial rodents in sub-polar alpine environments

    Detta är en avhandling från Uppsala : Kulturgeografiska institutionen, Uppsala Universitet

    Författare :Bert Eriksson; Jan Boelhowers; John Östh; Hanna Ridefelt; [2011]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; zoo-geomorphology; fossorial rodents; sub-polar; alpine; geomorphic work; ecosystem engineers; NATURAL SCIENCES Earth sciences Exogenous earth sciences Physical geography; NATURVETENSKAP Geovetenskap Exogen geovetenskap Naturgeografi; Geography; Geografi;

    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