Sökning: "vital rates"

Visar resultat 16 - 20 av 100 avhandlingar innehållade orden vital rates.

  1. 16. Tomorrow is yesterday: early-life conditions shape ectotherm life histories

    Författare :Alexander Hansson; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; life history; ectotherm; temperature; development; sex; telomere; senescence;

    Sammanfattning : Life history theory seeks to explain the overwhelming diversity of resource allocation strategies in nature by exploring how evolutionary forces optimise survival and reproduction within an organism’s environment. Central to this theory is that resources are finite, and thus increased investment into one trait may reduce resources available for another trait. LÄS MER

  3. 17. Cell renewal : terms and conditions may apply

    Författare :Pedro Réu; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : The longevity and turnover of the different constituent cells of an organism define its development, size, health, and biological age. The present thesis discusses the renewal rates and functions of cells in several organs and tissues: peripheral blood, bone marrow, intestine and central nervous system. LÄS MER

  4. 18. Stress-induced BVOC emissions from forests in Sweden

    Författare :Erica Jaakkola; BECC: Biodiversity and Ecosystem services in a Changing Climate; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Volatile organic compounds; Plant stress; Forests; Volatile emissions; spruce bark beetle infestations; ozone stress; wildfire recovery; Picea abies Norway spruce ; Betula pubescens ssp. czerepanovii; Pinus sylvestris Scots pine ; sweden;

    Sammanfattning : A changing climate is expected to lead to more extreme weather events, such as an increased frequency of droughts and forest fires. Changing forest conditions can offer benefits to species such as insects, including bark borers that thrive in warm conditions. LÄS MER

  5. 19. Physiological effects of apnoeic oxygenation using high-flow nasal oxygen

    Författare :Ida-Maria Forsberg; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : In anaesthetic practice, the inability to oxygenate and ventilate patients is a much-feared complication with risk for severe hypoxia-induced adverse outcomes. By administrating oxygen in the absence of spontaneous ventilation, apnoeic oxygenation may overcome these challenges by a prolonged time with sufficient oxygenation. LÄS MER

  7. 20. Coding, Modulation and Multiuser Decoding for DS-CDMA Systems

    Författare :Tony Ottosson Gadd; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : The general trend both in wireless and fixed network communication systems is flexibility in services, data rates, desired delay and performance. Future systems should not be designed for specific services but be more general and allow for a multitude of services, both now existing and those not yet invented. LÄS MER