Sökning: "fluid age"

Visar resultat 6 - 10 av 203 avhandlingar innehållade orden fluid age.

1. 6. The aging brain and changes in cognitive performance : Findings from morphometry and quantitative susceptibility mapping of iron

   Författare :Ninni Persson; Håkan Fischser; Kristine B. Walhovd; Stockholms universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; brain aging; volumes; ndividual differences; QSM; cognitive aging; iron; episodic memory; fluid-; crystalized abilities; sex differences; gender differences; Psychology; psykologi;

   Sammanfattning : Brain aging is a heterogeneous phenomenon, and this thesis illustrates how the course of aging can vary within individuals over time and between individuals as a function of age, sex, and genetic variability. We used two contrasts from magnetic resonance imaging (MRI), namely spin-lattice T1-weighted imaging, and quantitative susceptibility mapping (QSM) from gradient-echo images, to picture the aging brain, by means of morphometric measures and brain-iron concentrations. LÄS MER

3. 7. On Minor Salivary Gland Secretion

   Författare :Lars Eliasson; Göteborgs universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; age; dental plaque pH; dentures; gender; health; IgA; medication; minor salivary glands; oral dryness; saliva; salivary secretion rate;

   Sammanfattning : The overall aim of this series of studies has been to examine palatal, buccal and labial minor salivary gland secretions in relation to age and gender and other factors and conditions that could have effects on the saliva. Further aims were to analyze minor salivary gland secretions in relation to feelings of oral dryness and dental plaque pH. LÄS MER

4. 8. Stone Age Companions: Humans and animals in hunter-gatherer burials in north-eastern Europe

   Författare :Aija Macane; Göteborgs universitet; []
   Nyckelord :HUMANIORA; HUMANITIES; human–animal relationships; relational ontologies; companionship perspective; burial archaeology; mortuary practices; zooarchaeology; hunter-gatherers; Stone Age; Mesolithic; Neolithic; north-eastern Europe; southern Sweden; Latvia; central European Russia;

   Sammanfattning : This thesis examines the relationships between humans and animals in their mutual environment and how these relationships were expressed in the burial practices of northern foragers. The empirical research material consists of animal remains, particularly animal tooth pendants, deposited in graves at Zvejnieki (Latvia), Skateholm I and II (Sweden) and Sakhtysh II and IIa (Russia) cemeteries. LÄS MER

5. 9. Biomarkers in mid-trimester amniotic fluid in relation to gestational duration and spontaneous preterm delivery

   Författare :Maria Hallingström; Göteborgs universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; amniotic fluid; biomarkers; cytokine; damage-associated molecular pattern; gestation; gestational duration; inflammation; labor; mid-trimester; multiplex; pregnancy clock; proteins; spontaneous preterm delivery; term delivery;

   Sammanfattning : Background: The biological mechanisms and physiological pathways of pregnancy maintenance and timing of delivery are complex and multifactorial. Pregnancy clocks, partly controlled by timing mechanisms linked to fetal development, which regulate the onset of labor has previously been described. LÄS MER

7. 10. Development and regulation of alveolar fluid clearance in the guinea pig

   Författare :Andreas Norlin; Biologiska institutionen; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; oxytocin-induced preterm labor; IRDS; fetal lung fluid; preterm lung development; amiloride-sensitive sodium channels; beta-adrenergic stimulation; alveolar epithelium; Animal physiology; Djurfysiologi;

   Sammanfattning : Alveolar fluid clearance is driven by active absorption of Na+ across the alveolar epithelium. Development and hormonal regulation of alveolar fluid clearance over 1 hour was studied by instillation of a protein-containing, isosmolar fluid into lungs of fetal, newborn, and adult guinea pigs. LÄS MER