Search for dissertations about: "shark"

Showing result 1 - 5 of 12 swedish dissertations containing the word shark.

  2. 1. Organohalogen contaminants in Greenland shark (Somniosus microcephalus)

    Author : Anna Strid; Åke Bergman; Maria Athanasiadou; Shinsuke Tanabe; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; persistent organic pollutants; sub-Arctic; Iceland; shark; Environmental chemistry; Miljökemi; miljökemi; Environmental Chemistry;

    Abstract : The remote sub-Arctic/Arctic environment has due to human activities become a sink for organohalogen contaminants (OHCs). These OHC include traditional contaminants such as polychlorinated biphenyls (PCBs), DDTs and technical mixtures of polybrominated diphenyl ethers (PBDEs), all included in the Stockholm Convention list of persistent organic pollutants (POPs). READ MORE

  4. 2. 100 million years of shark macroevolution : A morphometric dive into tooth shape diversity

    Author : Mohamad Bazzi; Per Ahlberg; Matt Friedman; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Sharks; Macroevolution; Extinction recovery dynamics; Geometric Morphometrics; Morphospace-Disparity Framework; Teeth; Biology with specialization in Evolutionary Organismal Biology; Biologi med inriktning mot evolutionär organismbiologi;

    Abstract : Few vertebrate clades exhibit the evolutionary longevity and versatility of sharks, which constitute nearly half of all current chondrichthyan biodiversity and represent an ecological diversity of mid-to-apex trophic-level predators in both marine and freshwater environments. The rich fossil record of shark teeth from Mesozoic and Cenozoic rocks also makes the group amenable to large-scale quantitative analyses. READ MORE

  5. 3. Friction drag studies on microfabricated surface structures : a new equipment, sample manufacturing and the first results

    Author : Håkan Rapp; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; riblets; microfabrication; plane channel; Friction drag; chevrons; shark skin; biomimetric; sand grain roughness;

    Abstract : .... READ MORE

  6. 4. Molecular Evolution of Neuropeptide Y Receptors in Vertebrates

    Author : Erik Salaneck; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Neurosciences; Neuropeptide Y; Receptor; Evolution; Neurovetenskap; Neurology; Neurologi; Neurology; neurologi;

    Abstract : The three evolutionarily related peptides neuropeptide Y (NPY), peptide YY (PYY) and pancreatic polypeptide (PP) are ligands to at least five G-protein coupled receptors in mammals, which are denoted by numbers. NPY has many physiological effects including stimulation of appetite and regulation of circadian rhythm and blood pressure. READ MORE

  7. 5. Playing Activists and Dancing Anarchists : Men and Masculinities in Cultural Performances in Contemporary Sweden

    Author : Dirk Gindt; Tiina Rosenberg; David Savran; Stockholms universitet; []
    Keywords : HUMANIORA; HUMANITIES; Cultural performances; theatrical event; theatricality; gender; men; masculinities; hegemonic masculinity; political demonstrations; prime minister Göran Persson; Sweden; Theatre; Teatervetenskap; teatervetenskap; Theatre Studies;

    Abstract : Playing Activists and Dancing Anarchists is a Ph.D. dissertation that aims to analyse men and masculinities in political demonstrations and similar manifestations by conceptualising and analytically approaching such cultural performances as theatrical events. READ MORE