Sökning: "Fibril"

Visar resultat 1 - 5 av 154 avhandlingar innehållade ordet Fibril.

  1. 1. Structural Elements in Native Celluloses

    Författare :Kristina Wickholm; KTH; []
    Nyckelord :cellulose I; accessible fibril surfaces; inaccessible fibril surfaces; para-crystalline cellulose; fibril aggregates; CP MAS 13C-NMR spectroscopy; spectral fitting; PCA; PLS;

    Sammanfattning : In this thesis, a schematic model for the structure ofaggregated cellulose I fibrils is proposed. The model consistsof a crystalline fibril core surrounded by less orderedcellulose forms. These cellulose forms are fibril surfacesaccessible to water, fibril surfaces inaccessible to water andpara-crystalline cellulose. LÄS MER

  3. 2. Apolipoprotein A-IV and Transthyretin in Swedish Forms of Systemic Amyloidosis

    Författare :Joakim Bergström; Per Westermark; Giampaolo Merlini; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pathology; Amyloid; Fibril; Aggregation; Apolipoprotein A-IV; Transthyretin; Seeding; Senile systemic amyloidosis; Familial amyloidotic polyneuropathy; Patologi; Pathology; Patologi;

    Sammanfattning : Over 20 different plasma proteins have been shown to have the capacity to undergo conformational changes and self-assemble into highly stable and insoluble amyloid fibrils. One, transthyretin (TTR), consists of 127 amino acid residues arranged in eight β-strands (named A to H) and is involved in two different clinical forms of amyloidosis. LÄS MER

  4. 3. Domain swapping as a molecular mechanism in amyloidosis

    Författare :Maria Wahlbom; Avdelningen för klinisk kemi och farmakologi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Clinical chemistry; Klinisk kemi; Medicin människa och djur ; Medicine human and vertebrates ; oligomer; dimer; domain swapping; fibril; cystatin C; amyloidosis;

    Sammanfattning : Amyloidosis is a group of diseases characterized by a change in protein conformation resulting in aggregation and tissue deposition of amyloid fibrils. One variant of cystatin C, L68Q cystatin C, is highly amyloidogenic and persons carrying the corresponding gene suffer from massive cerebral amyloidosis leading to brain hemorrhage and death. LÄS MER

  5. 4. Orientation of elongated, macro and nano-sized particles in macroscopic flows

    Författare :Karl Håkansson; Danel Söderberg; Fredrik Lundell; Lisa Prahl Wittberg; Jean-Yves Cavaillé; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Orientation; fibre; fibril; turbulent channel flow; particle streaks; flow focusing; cellulose nanofibrils; extensional flow; Smoluchowski; rotary diffusion;

    Sammanfattning : Non-spherical particles are present all around us, in biological, industrial and environmental processes. Making predictions of their impact on us and systems in our vicinity can make life better for everyone here on earth. LÄS MER

  7. 5. Ultrastructural arrangement of the polymers in wood fibres

    Författare :Jesper Fahlén; KTH; []
    Nyckelord :Atomic force microscopy; Picea abies; Lamellar structure; Scanning electron microscopy; Fracture; Fibril; Kraft pulping; Ultrastructure; Image processing; Secondary wall;

    Sammanfattning : .... LÄS MER