Sökning: "Growth substances"

Visar resultat 16 - 20 av 156 avhandlingar innehållade orden Growth substances.

  1. 16. Diffusion in Bone Tissue

    Författare :Gustav Lindberg; Hållfasthetslära; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; bone growth; diffusion; stress enhanced; finite element method; steady-state; periosteal membrane; diffusion in bovine bone; diffusion experiment; Conductivity measurement; Fick’s law; Fourier series; Kalman filter; transient solution;

    Sammanfattning : In order to prevent or modify the processes of bone degeneration the modeling and remodeling of bone tissue must be better understood. In this thesis it is assumed that the primary condition leading to bone growth is a change of the chemical environment caused by transport of matter resulting from stress driven diffusion. LÄS MER

  3. 17. The Influence of Intrauterine Environment on Cardiovascular Development During Fetal Life

    Författare :Helena Gardiner; Lund Obstetrik och gynekologi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; reproduktion; sexualitet; andrology; reproduction; sexuality; Obstetrik; gynekologi; Obstetrics; gynaecology; arterial distensibility; twin-twin transfusion; Growth-restriction; Fetal; Cardiovascular Development; andrologi;

    Sammanfattning : Fetal growth restriction has been linked to later cardiovascular disease, possibly through reduced arterial distensibility in response to a suboptimal intrauterine environment. This thesis sought firstly to examine the relationship between fetal growth and haemodynamics and their effect on later cardiovascular function and secondly to examine the effects of differential volume loading on arterial distensibility in genetically identical monochorionic twins with twin-twin transfusion syndrome (TTTS) and to explore the effect that early treatment has on vascular development. LÄS MER

  4. 18. Phytoplankton drivers in a marine system influenced by allochthonous organic matter – the Baltic Sea

    Författare :Joanna Paczkowska; Agneta Andersson; Owen Rowe; Harri Kuosa; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; phytoplankton; nutrients; allochthonous organic matter; humic substances; structuring factors;

    Sammanfattning : Climate change scenarios predict that seawater temperature and precipitation will increase in the Baltic Sea region during the next century. In the northern part of the Baltic Sea, increasing inflows of the terrestrial allochthonous dissolved organic matter (ADOM) are expected to be a major consequence of elevated rainfall, which can alter light and nutrient availability for phytoplankton. LÄS MER

  5. 19. Satellite cells in human skeletal muscle : molecular identification quantification and function

    Författare :Mona Lindström; Lars-Eric Thornell; Hannu Kalimo; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; satellite cell markers; NCAM; Pax7; MyoD; myogenin; DLK1 FA1; c-Met; human skeletal muscle; immunohistochemistry; muscle growth; muscle hypertrophy; Morphology; cell biology; pathology; Morfologi; cellbiologi; patologi; anatomi; Human Anatomy;

    Sammanfattning : Skeletal muscle satellite cells located between the plasma membrane and the basal lamina of muscle fibres, could for many years, only be studied in situ by electron microscopy. The introduction of immunohistochemistry and the discovery of molecular markers of satellite cells then made them accessible for light microscopic studies and a wealth of information is today available. LÄS MER

  7. 20. Volatile metabolites from microorganisms in indoor environments : sampling, analysis and identification

    Författare :Anna-Lena Sunesson; Alvin Fox; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Adsorbents; Analysis; Cultivation; Determination; Gas chromatography; Identification; Indicator substances; Indoor air; Mass spectrometry; Metabolites; Microbial volatile organic compounds; Optimization; Sampling; Sick buildings; Thermal desorption; Aspergillus versicolor; Cladosporium cladosporioides; Paecilomyces variotii; Pénicillium commune; Phialophora fastigiata; Streptomyces albidoflavus;

    Sammanfattning : Microorganisms are able to produce a wide variety of volatile organic compounds. This thesis deals with sampling, analysis and identification of such compounds, produced by microorganisms commonly found in buildings. LÄS MER