Sökning: "dietary shift"

Visar resultat 21 - 25 av 30 avhandlingar innehållade orden dietary shift.

  1. 21. On Death in the Mesolithic : Or the Mortuary Practices of the Last Hunter-Gatherers of the South-Western Iberian Peninsula, 7th–6th Millennium BCE

    Författare :Rita Peyroteo Stjerna; Kjel Knutsson; Mariana Diniz; Liv Nilsson Stutz; Clive Bonsall; Uppsala universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; death; Late Mesolithic; hunter-gatherers; social memory; place; burial practices; mortuary ritual; historical process; south-western Iberian Peninsula; archaeothanatology; radiocarbon dating and Bayesian analysis; stable isotopes carbon and nitrogen ; shell middens; museum collections; Archaeology; Arkeologi;

    Sammanfattning : The history of death is entangled with the history of changing social values, meaning that a shift in attitudes to death will be consistent with changes in a society’s world view.Late Mesolithic shell middens in the Tagus and Sado valleys, Portugal, constitute some of the largest and earliest burial grounds known, arranged and maintained by people with a hunting, fishing, and foraging lifestyle, c 6000–5000 cal BCE. LÄS MER

  3. 22. Evolutionary ecology of arctic char (Salvelinus alpinus (L.)) : Intra- and interspecific interactions in circumpolar populations

    Författare :Johan Hammar; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ecology; Arctic char; Salvelinus alpinus; biogeography; niche; life history; population ecology; intra- and interspecific interactions; cannibalism; competition; landlocked; marginal populations; species border; Ekologi; Terrestrial; freshwater and marine ecology; Terrestisk; limnisk och marin ekologi; Animal Ecology; zooekologi;

    Sammanfattning : This thesis examines a suite of ecological and genetic mechanisms influencing the fundamental and realized niche borders of European and North American populations of the Arctic char (Salvelinus alpinus (L.)) species complex in allopatry as well as in sympatry with brown trout (Salmo trutta) or brook trout (Salvelinus fontinalis). LÄS MER

  4. 23. Incidence trends and environmental determinants of type 1 diabetes in Lithuania and Sweden

    Författare :Auste Pundziute-Lyckå; Gisela Dahlquist; Brone Urbonaite; Hans Kristian Åkerblom; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pediatrics; type 1 diabetes mellitus; epidemiology; childhood; incidence; secular trend; case-control study; risk factors; infections; energy; weight; Pediatrik; Paediatric medicine; Pediatrisk medicin; pediatrik; Pediatrics;

    Sammanfattning : Variation of diabetes incidence over time in countries with different incidence levels and socio-economic conditions, and in an age span beyond the childhood years, may give clues for diabetes causes.Materials: Data from prospective type 1 diabetes registers in Sweden and Lithuania in children (0-14 years) and young adults (15-34 and 15-39 years, respectively). LÄS MER

  5. 24. Nickel allergy in a Swedish adolescent population and its relation to orthodontic treatment and lifestyle factors

    Författare :Ronny Fors; Berndt Stenberg; Maurits Persson; Arne Hensten; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; adolescent; dental plaque; lifestyle; nickel; oral; orthodontic treatment; patch test; questionnaire; sensitisation; tolerance; Orthodontics; Ortodonti;

    Sammanfattning : Nickel stands out as the main cause of contact allergy in both children and adults, which has given rise to concern and the introduction of regulations by official bodies. Today´s youths are frequently exposed to body piercing and orthodontic treatment. LÄS MER

  7. 25. Mechanisms of immune escape : implications for immunotherapy against cancer

    Författare :Karl-Johan Malmberg; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Tumor Immunology; Immune escape; NK receptors; T lymphocytes; Oxidative stress; Vitamin E;

    Sammanfattning : Tumor cells can be recognized and killed by cytotoxic T cells specific for certain tumor antigens. Immune mediated selection pressure along with genetic instability of tumor cells result in a growth advantage of tumor cells that acquire a less immunogenic phenotype. LÄS MER