Sökning: "Oscar Properties"

Visar resultat 1 - 5 av 68 uppsatser innehållade orden Oscar Properties.

  1. 1. Fitting a photospheric prompt emission model to GRB data: The Kompaneets RMS approximation (KRA)

    Master-uppsats, KTH/Fysik

    Författare :Oscar Wistemar; [2023]
    Nyckelord :Gamma-Ray Bursts; Astrophysics; Engineering Physics; Gamma-Blixtar; Astrofysik; Teknisk Fysik;

    Sammanfattning : Gamma-ray bursts (GRBs) are some of the most energetic events in the universe. Shocks occurring below the photosphere are likely radiation mediated shocks (RMSs) and are suspected to shape the spectra. Due to computational costs of simulating RMSs, models had not been fitted to data and a faster model was needed. LÄS MER

  3. 2. Optical properties in chalcogenide glasses and their temperaturedependence. : Literary survey and experiments.

    Kandidat-uppsats, Uppsala universitet/Institutionen för materialvetenskap

    Författare :Matilda Karlsson; Saifallah Khaled Ali; Erik Lundqvist; Ask Löthman Ybo; Kalle Sigås; Oscar Törnquist; [2023]
    Nyckelord :Chalcogenide materials; Chalcogenide glass; Optical properties; Temperature dependence;

    Sammanfattning : This study aimed to investigate methods for determining the temperature dependence of the refractive index and absorption of IR-transparent materials through literary studies and experimental tests. Results from the experimental trials were hard to obtain due to the inherent difficulty of measuring optical properties and yielded only temperature trends of transmittance and reflectance. LÄS MER

  4. 3. Deacetylated Hyaluronan : Exploration of deacetylation techniques for hyaluronan (oligo and polysaccharides)

    Kandidat-uppsats, Uppsala universitet/Institutionen för materialvetenskap

    Författare :Sima Mardini; Hanna Björk; Marcus Möller; Carl Lagergren; Oscar Samuelsson; [2023]
    Nyckelord :hyaluronic acid; deacetylated hyaluronan; N-deacetylation; re-acetylation; hydrogels;

    Sammanfattning : Hyaluronic acid is an organic polysaccharide with a wide range of uses in medical and cosmetic industries due to its physiological properties. Crosslinked hyaluronic acid is a commonly used filler agent because of its water retention capabilities. N-deacetylation can be performed to enable new derivatives of hyaluronic acid. LÄS MER

  5. 4. The impact of ion drift in a Transcutaneous Electrical Stimulation model

    Master-uppsats, Lunds universitet/Avdelningen för Biomedicinsk teknik

    Författare :Oscar Tuvesson; Erik Blåe; [2022]
    Nyckelord :TES; neuron activation; ion drift; conductivity; COMSOL; FEM; Technology and Engineering;

    Sammanfattning : A major area of research in neuroscience is the effect of stimulating nerves into activation from extrinsic stimuli. This is commonly done with electric currents and external skin-contact electrodes. LÄS MER

  7. 5. Surface roughness and ion release properties of a bioactive restorative material Predicta Bioactive Bulk-fill

    Master-uppsats, Umeå universitet/Institutionen för odontologi

    Författare :Joel Berglund; Oscar Adell; [2022]
    Nyckelord :Predicta Bioactive Bulk-Fill; Surface roughness; ion release.;

    Sammanfattning : Background: Dental filling materials are used on a regular basis by dentists. Commonly used filling materials on the current market are resin composites and glass ionomers cements. However, new materials continue to be presented on the market with claimed improved physical and chemical properties, among them Predicta Bioactive Bulk. LÄS MER