Sökning: "biomineralisation"

Hittade 5 avhandlingar innehållade ordet biomineralisation.

  1. 1. Osteocytes as indicators of bone quality - multiscale structure-composition characterisation of the bone-implant interface

    Författare :Furqan A. Shah; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; 3D printing; apatite; biomaterials; biomineralisation; bone; bone quality; canaliculi; CoCr; collagen; electron beam melting; electron microscopy; implant; interface; in vivo; lacuna; micropetrosis; osseointegration; osteocyte; Raman spectroscopy; surface modification; Ti6Al4V; titanium; ultrastructure; whitlockite;

    Sammanfattning : By virtue of certain design features, bone anchored metal implants can be made to elicit a strong initial osteogenic response, i.e., the amount of bone formed. LÄS MER

  3. 2. Bio-Nano Interactions : Synthesis, Functionalization and Characterization of Biomaterial Interfaces

    Författare :Yixiao Cai; Xia Wei; Mikael Karlsson; Martin Andersson; Uppsala universitet; []
    Nyckelord :Bioactive surfaces; nanocrystalline diamond; hydroxyapatite; protein secondary structure; protein absorption; auditory neurons; single crystalline rutile; nano morphology; surface functionalisation; in vitro biomineralisation; translucent nano-ceramics; bio-window material; material characterisation.; Teknisk fysik med inriktning mot materialvetenskap; Engineering Science with specialization in Materials Science;

    Sammanfattning : Current strategies for designing biomaterials involve creating materials and interfaces that interact with biomolecules, cells and tissues.  This thesis aims to investigate several bioactive surfaces, such as nanocrystalline diamond (NCD), hydroxyapatite (HA) and single crystalline titanium dioxide, in terms of material synthesis, surface functionalization and characterization. LÄS MER

  4. 3. The emergence of pelagic calcification and its influence on seawater chemistry in the Upper Triassic

    Författare :Isaline Demangel; Berggrundsgeologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Calcareous nannofossils; Triassic; Neo-Tethys Ocean; Pelagic calcification;

    Sammanfattning : After the early biomineralisation event in the early Paleozoic (Cambrian –Ordovician; 541 – 443.8 Ma), the Late Triassic (237 – 201.3 Ma) represents another key period of biomineralisation with the onset of the Mesozoic plankton radiation. LÄS MER

  5. 4. DISCO - Drivers and Impacts of Coastal Ocean Acidification

    Författare :Laurie Charrieau; Kvartärgeologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Coastal ocean acidification; Foraminifera; Environmental changes; pH; Salinity;

    Sammanfattning : Ocean acidification, mainly attributed to the increasing anthropogenic CO2 in the atmosphere, is characterised by a lowering pH together with a shift in the sea water carbonate chemistry toward lower concentration of carbonate ions. On the coasts, where the environmental variability is high due to natural and human impacts, ocean acidification mainly affects the frequency, magnitude, and duration of lower pH and lower calcium carbonate saturation events. LÄS MER

  7. 5. Experimental, petrological and geochemical investigations of ikaite (CaCO3·6H2O) formation in marine environments

    Författare :Elin Tollefsen; Alasdair Skelton; Carl-Magnus Mörth; Erik Sturkell; Andrew Putnis; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; ikaite; petrology; experiment; geochemistry; marine environments; pseudomorphs; calcium carbonate; Ikka Fjord; glendonite; nepheline; siderite; paleotemperature; carbonatite; Geology; geologi;

    Sammanfattning : Carbonates are a group of minerals that play an essential role in several processes on planet Earth, for example in the global carbon cycle and as a product of biomineralisation. Calcite (CaCO3) is by far the most common mineral in the carbonate group, and the stable form of carbonate at Earth surface conditions. LÄS MER