Sökning: "tubular structures"

Visar resultat 1 - 5 av 8 uppsatser innehållade orden tubular structures.

  1. 1. Polymerized Tubular Silicates in Lower Cambrian Carbonates – Biology or Chemistry?

    Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Scott Green; [2022]
    Nyckelord :biosignature; tubular structures; Lower Cambrian; silica precipitation; bifurcating; biosignatur; rörstrukturer; Kambrium Serie 3; kiseldioxid utfällning; förgrening;

    Sammanfattning : Shallow marine environments from the Lower Cambrian period were very different to shallow marine environments of today. Tubes of what was thought to be silica recovered from a partly dolomitized carbonate sample collected form a site near Indian Springs, Nevada could help further understand the chemistry and characteristics of such environments. LÄS MER

  3. 2. Deformable image registration using anatomical landmarks in tubular structures

    Master-uppsats, KTH/Medicinteknik och hälsosystem

    Författare :Jenny Wingqvist; [2021]
    Nyckelord :Medical image analysis; radiation therapy; deformable image registration; anatomical landmarks; bronchial tree; vascular tree;

    Sammanfattning : Cancer is one of the leading causes of death in the world, but advances in research and development of treatment methods is constantly ongoing to reduce the number of deaths and the amount of suffering. One of many approaches is radiation therapy, which uses high doses of radiation to kill tumors. LÄS MER

  4. 3. 3D printing of alginates into tubular structures resembling human airways

    Master-uppsats, Lunds universitet/Avdelningen för Biomedicinsk teknik

    Författare :Tomasz Syski; [2021]
    Nyckelord :Tissue Engineering; Bioprinting; FRESH; Bioengineering; Alginate; Bioink; Biomaterial ink; Biomaterial; Airway; Regeneration; Hydrogel; 3D printing.; Technology and Engineering;

    Sammanfattning : Tissue shortage for lung transplantation remains a problem worldwide as lung transplantation is often the only available option with numerous possible complications. Generating lung tissue ex-vivo has been proposed as one way to potentially overcome this shortage. LÄS MER

  5. 4. Cystatin C och cylindrar i urin från hundar på intensivvårdsavdelning

    Uppsats för yrkesexamina på avancerad nivå, SLU/Dept. of Clinical Sciences

    Författare :Matilda Axelsson; [2021]
    Nyckelord :Cystatin C; cylindrar; AKI; hund; IVA; tubuliskada; urinmarkör;

    Sammanfattning : Akuta njurskador (AKI) är ett samlingsbegrepp för olika tillstånd som innebär skada på njurarna med akut uppkomst. Många olika etiologier kan ligga bakom AKI hos hund, exempelvis förgiftning, infektion, blödning och sepsis. Njurarnas anatomiska strukturer påverkas olika beroende på vilken eller vilka etiologier som är inblandade. LÄS MER

  7. 5. Fabrication of a light-weight SOFC using ceramic fibre paper as substrate

    Master-uppsats, Lunds universitet/Centrum för analys och syntes

    Författare :Philip Löfkvist; [2015]
    Nyckelord :inorganic chemistry; solid oxide fuel cell; unmanned aerial vehicle; high temperature heat treatment; yttria stabilized zirconia; ceramic fibre paper; catator; nickel oxide; impregnation; paste manufacturing; ultra-sonication; ball-milling; optical microscopy; materials chemistry; scanning electron microscopy; materialkemi; Technology and Engineering;

    Sammanfattning : A novel method for the fabrication of a light-weight solid oxide fuel cell (SOFC) has been evaluated at Catator. This was conducted in order to lower the weight and thus cost of an unmanned aerial vehicle. The main aim for this thesis was to achieve a thin, dense and crack-free electrolyte using a ceramic fibre paper as substrate. LÄS MER