Search for dissertations about: "eyes"

Showing result 6 - 10 of 309 swedish dissertations containing the word eyes.

2. 6. Comparative optics of prosobranch eyes

   Author : Jan-Olof Seyer; Biologiska institutionen; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Ampularia; Littorina; Strombus; evolution; visual ecology; summation; convergence; optic nerve; resolution; sensitivity; optics; eye; gastropod; prosobranch; Animal anatomy; animal morphology; Djurs anatomi och morfologi;

   Abstract : Functional aspects of the large diversity of eye design in prosobranch molluscs was investigated using morphological and optical methods. Three species from different habitats were investigated. Littorina littorea from Scandinavian intertidal rock habitats, Strombus raninus and S. gigas from tropical sand-flats and Ampularia sp. READ MORE

4. 7. Exposure, health effects, immunological markers and biomarkers of susceptibility among Swedish rubber workers

   Author : Lena S Jönsson; Avdelningen för arbets- och miljömedicin; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Yrkesmedicin; arbetsmiljömedicin; industrial medicine; Public health; epidemiology; Folkhälsa; epidemiologi; Occupational health; Andningsorganen; rubber industry; polymorphisms; vulcanisation fumes; Respiratory system; nausea; headache; exposure-response relationships; biomarkers; symptoms; airways; eyes; TTCA; PAH; 1-hydroxypyrene;

   Abstract : Workers in the rubber industry have an increased risk of several diseases, such as airway disease, cancer and probably cardiovascular disease. The exposure is very complex; carbon disulfide (CS2) and polycyclic aromatic hydrocarbons (PAHs) being two of the contaminants. READ MORE

5. 8. The visual ecology of bees - Tales of diverse eyes and behaviours

   Author : Pierre Tichit; Funktionell zoologi; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Animal behaviour; Arthropods; Bumblebees; Compound Eyes; Crystalline cones; Flight control; Image analysis; Landing; Sensory ecology; Stingless bees; Vision; X-ray microtomography;

   Abstract : The buzzing flight of bees is a popular summer hit. Yet, outside of a few familiar species of honeybees and bumblebees, these fantastic little creatures are still mostly unknown. With about twenty-five thousand species, bees are a very diverse group. They can be found in drastically different habitats. READ MORE

6. 9. Visual ecology of insect superposition eyes

   Author : Pär A Brännström; Biologiska institutionen; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Animal physiology; tiger beetle; hawkmoth; mayfly; insect; visual ecology; eye design; vision; compound eye; Djurfysiologi;

   Abstract : In the superposition compound eye each rhabdom (light sensitive unit) receives light through many ommatidial facets, while in the apposition compound eye every rhabdom receives light from a single facet. The superposition design increases photon capture, which is an advantage in dark environments. READ MORE

7. 10. The Social World Through Infants’ Eyes : How Infants Look at Different Social Figures

   Author : Clara A. Schmitow; Gunilla Stenberg; Gustaf Gredebäck; Annika M.D. Melinder; Uppsala universitet; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; infant social looking; emotional facial expressions; experience; identity; behavior regulation; head-mounted cameras; eye-tracking; Psychology; Psykologi;

   Abstract : This thesis aims to study how infants actively look at different social figures: parents and strangers. To study infants’ looking behavior in “live” situations, new methods to record looking behavior were tested. Study 1 developed a method to record looking behavior in “live” situations: a head-mounted camera. READ MORE