Sökning: "age- and size at maturity"

Visar resultat 1 - 5 av 11 avhandlingar innehållade orden age- and size at maturity.

  1. 1. Turn-taking and early phonology : Contingency in parent-child interaction and assessment of early speech production

    Författare :Ulrika Marklund; Francisco Lacerda; Iris-Corinna Schwarz; Barbro Bruce; Stockholms universitet; []
    Nyckelord :HUMANITIES; HUMANIORA; HUMANIORA; HUMANITIES; parent-child interaction; turn-taking; parental responsiveness; phonological development; phonological complexity; assessment of speech production; Phonetics; fonetik;

    Sammanfattning : This thesis focuses on contingency in parent-child interaction, investigating it in the light of the linguistic capacity of the child and the status of the caregiver. Further, the thesis covers the development of two tools to assess the developmental maturity level of expressive phonology. LÄS MER

  2. 2. Variation in age and size at maturation in two benthic crustaceans in the Gulf of Bothnia

    Författare :Kjell Leonardsson; J. Ekman; Umeå universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Age at maturation; alternative prey; Bergmanris rule; cannibalism; growth; life-history theory; mortality; Mvoxocephalus quadricornis; poikilotherm; Pontoporeia affinis; population dynamics; risk- taking behaviour; Saduria entomon; size at maturation; temperature;

    Sammanfattning : The thesis deals with variation in age and size at maturation in Saduria entomon and Pontoporeia affinis along a depth gradient in the Gulf of Bothnia, Sweden. I have analysed at what sizes and ages animals should mature in relation to growth and mortality conditions. LÄS MER

  3. 3. Body Size Evolution in Butterflies

    Författare :David Berger; Karl Gotthard; Wolf Blanckenhorn; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; Body size evolution; age- and size at maturity; life history theory; fecundity; predation risk; juvenile growth rate; Lepidoptera; Biology; Biologi; zoologisk ekologi; Animal Ecology;

    Sammanfattning : Life history research deals with the scheme of resource partitioning to a wide spectra of processes and the trade-offs shaping these events. One of the most fundamental life history trade-offs is the one of at which age- and size an organism should start to reproduce; reaching a large size at maturity is often advantageous in terms of high adult survival and reproductive potential, while to attain a larger size the organisms must prolong juvenile development which is assumed costly in terms of mortality. LÄS MER

  4. 4. Validity and reliability of a submaximal cycle ergometer test for estimation of maximal oxygen uptake

    Författare :Frida Maria Eleonora Björkman; Örjan Ekblom; Tony Bohman; Åsa Tornberg; Gymnastik- och idrottshögskolan; []

    Sammanfattning : Maximal oxygen uptake (VO2max) is the highest obtained rate of oxygen consumption during a physically intense dynamic whole-body activity. VO2max is an important factor for many types of physical performance, as well as a strong independent predictor of health and longevity. LÄS MER

  5. 5. Bone mass in young adults - determinants and fracture prediction

    Författare :Henrik Düppe; Ortopedi - klinisk och molekylär osteoporosforskning; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Skelett; rheumatology locomotion; muscle system; Skeleton; Fracture prediction.; Bone mass; Osteoporosis; Bone densitometry; muskelsystem; reumatologi;

    Sammanfattning : Bone mass in adolescents and young adults was studied with regard to its age-related change and its determinants. Methodological aspects of bone mass measurements and their ability to predict future fractures were investigated. LÄS MER