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Visar resultat 1 - 5 av 116 avhandlingar som matchar ovanstående sökkriterier.

  1. 1. Nucleation and growth of martensite in steel

    Författare :Annika Borgenstam; KTH; []
    Nyckelord :martensite; Fe-alloys; α-martensite; athermal martensite; isothermal martensite; plate martensite; lath martensite; nucleation; growth; thermodynamics; plateau temperature; driving force; activation energy; bainite; Widmanstätten α; diffusive mechanism; displacive mechanism; ε-martensite; TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : .... LÄS MER

  3. 2. Effects of growth hormone on bone tissue in transgenic mice

    Författare :Jonas Sandstedt; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Growth hormone; bone; ovariectomy; orchidectomy; growth; Interleukin-6; titanium; transgenic mice;

    Sammanfattning : Growth hormone (GH) affect bone-tissue in both humans and rodents. Also sex steroids are important for growth and the maintenance of normal bone physiology. The specific aims of this study were to investigate how high levels of GH affects bone tissue in mice and to determine whether these effects are dependent on an intact gonadal function. LÄS MER

  4. 3. Modelling loading and growth of long bones Modelling loading and growth of long bones

    Författare :Priti Yadav; Elena Gutierrez-Farewik; Anders Eriksson; Eva Pontén; Hanna Isaksson; KTH; []
    Nyckelord :Growth Plate; Finite element analysis; Engineering Mechanics; Teknisk mekanik;

    Sammanfattning : The long bones grow by the process of endochondral ossification, which occurs at the growth plate. This process is regulated by biological factors and mechanical factors. The biological factors which contribute to endochondral ossification process are genes, hormones, nutrients etc. The mechanical factor is the load acting on the bone. LÄS MER

  5. 4. The role of estrogen receptor alpha in the regulation of bone and growth plate cartilage

    Författare :Anna E Börjesson; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; estrogen receptor α; bone; growth plate; estrogen;

    Sammanfattning : Estrogens are important endocrine regulators of skeletal growth and maintenance in both females and males. Studies have demonstrated that the estrogen receptor (ER)-α is the main mediator of these estrogenic effects in bone. Therefore, estrogen signaling via ERα is a target both for affecting longitudinal bone growth and for bone remodeling. LÄS MER

  7. 5. The role of apoptosis in growth plate cartilage during normal and abnormal growth

    Författare :Dionisios Chrysis; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Apoptosis; growth plate; dexamethasone; cytokines;

    Sammanfattning : Longitudinal bone growth occurs at the growth plate where resting chondrocytes proliferate, differentiate into a hypertrophic form, and finally become terminal hypertrophic chondrocytes before giving rise to bone. Because growth occurs when proliferation exceeds cell death, alterations in cell death by apoptosis, which is essential for the maintenance of tissue homeostasis, could affect growth. LÄS MER