Sökning: "Melanin"

Visar resultat 1 - 5 av 50 avhandlingar innehållade ordet Melanin.

  1. 1. Mechanisms of accumulation of foreign substances in melanin : binding to preformed melanin and incorporation into growing melanin

    Författare :Bengt Larsson; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; PHARMACY; FARMACI;

    Sammanfattning : .... LÄS MER

  3. 2. Photochemistry of Eumelanin Precursors Role of Excited State Proton Transfer for UV Photoprotection

    Författare :Alice Corani; Kemisk fysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Time-resolved; Fluorescence spectroscopy; Excited State Proton Transfer ESPT ; Photochemistry; Eumelanin; Melanin;

    Sammanfattning : Melanin is an epidermal pigment commonly known to give darker skin coloration under sun exposure. It is also present in the hair, eyes, inner ear and brain. LÄS MER

  4. 3. Interaction between chemicals and melanin : Role in the aetiology, diagnosis and treatment of melanoma

    Författare :Amilcar Eliseu Rato da Silva Roberto; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pharmaceutical biosciences; Farmaceutisk biovetenskap; Biopharmacy; Biofarmaci; Toxicology; toxikologi;

    Sammanfattning : The incidence of malignant melanoma has continually increased over the past decades and the prognosisis poor after dissemination of metastases. A conspicuous feature of melanocytes and melanoma cells is the production of melanin. LÄS MER

  5. 4. Molecular, micro- and ultrastructural investigations of labile tissues in deep time

    Författare :Johan Gren; Berggrundsgeologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; eumelanin; fossils; histology; integument; IR microspectroscopy; melanin; melanosomes; molecular palaeontology; ToF-SIMS; XAS;

    Sammanfattning : This thesis comprises investigations of microstructures and molecular remains, preserved in a variety of fossil specimens. The results are presented in six papers, collectively aiming to thoroughly examine fossil traces of such remains by employing a combination of both established and relatively new analytical methods. LÄS MER

  7. 5. Exceptional fossil preservation: implications for palaeobiology and taphonomy

    Författare :Miriam Heingård; Berggrundsgeologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; exceptional preservation; molecular palaeontology; palaeobiology; taphonomy; braincase; cuticle; fish larvae; Fur Formation; Stolleklint Clay; melanin; systematics;

    Sammanfattning : Although fossils are relatively common in some sedimentary deposits, the majority consists of fragmented or distorted skeletal hard parts (such as shell and bones). However, in rare cases, special burial and diagenetic conditions have allowed a greater portion of the original anatomy to be incorporated into the fossil record. LÄS MER