Blar i Institutt for fysikk på tittel

Viser treff 1867-1886 av 2661

    • Quantification of Blood Flow in Cerebral Arteries at 7T MR 

      Liang, Oda (Master thesis, 2022)
      Avbildning med 2D fasekontrast gjør det mulig å kvantifisere blodgjennomstrømning (mL/min) i cerebrale blodårer, og kan være et nyttig verktøy for å planlegge behandling og undersøke langtidseffekter hos pasienter med ...

    • Quantifying the hydroxyapatite orientation near the ossification front in a piglet femoral condyle using X-ray diffraction tensor tomography 

      Mürer, Fredrik Kristoffer; Chattopadhyay, Basab; Madathiparambil, Aldritt Scaria; Tekseth, Kim Robert Bjørk; Di Michel, Marco; Liebi, Marianne; Lilledahl, Magnus Borstad; Olstad, Kristin; Breiby, Dag Werner (Peer reviewed; Journal article, 2021)
      While a detailed knowledge of the hierarchical structure and morphology of the extracellular matrix is considered crucial for understanding the physiological and mechanical properties of bone and cartilage, the orientation ...

    • Quantifying the influence of the stratosphere on the mesosphere and lower thermasphere 

      de Wit, Rosmarie J. (Doctoral thesis at NTNU;2015:22, Doctoral thesis, 2015)
      In this thesis, the influence of the major modes of stratospheric variability - the seasonal cycle and sudden stratospheric warmings (SSWs) in the extratropics, and the quasi-biennial oscillation (QBO) in the equatorial ...

    • Quantitative (S)TEM analysis of intermediate band solar cell materials 

      Nord, Magnus Kristofer (Master thesis, 2011)
      In this thesis the strain properties of two InAs/GaAs quantum dot intermediate band solar cell materials have been explored. Both samples were thin films grown on a (100) GaAs substrate. The quantum dot material was InAs, ...

    • Quantitative 3-D colocalization analysis as a tool to study the intracellular trafficking and dissociation of pDNA-chitosan polyplexes 

      Reitan, Nina Kristine; Sporsheim, Bjørnar; Bjørkøy, Astrid; Strand, Sabina P.; Davies, Catharina De Lange (Journal article; Peer reviewed, 2012)
      Multichannel microscopy is frequently used to study intermolecular interactions and spatial relationships between biomolecules and organelles or vesicles in cells. Based on multichannel images, quantitative colocalization ...

    • Quantitative 3D Imaging and Metrology Using Coherent X-ray Scattering 

      Skjønsfjell, Eirik Torbjørn Bakken (Doctoral theses at NTNU;2017:300, Doctoral thesis, 2017)
      This thesis has focused on exploring methods of using coherent X-ray scattering at synchrotron sources. New imaging techniques using coherent X-ray scattering have been investigated, and it has been discussed how limitations ...

    • Quantitative 3D X-ray Imaging of Densification, Delamination and Fracture in a Micro-Composite under Compression 

      Fløystad, Jostein Bø; Skjønsfjell, Eirik Torbjørn Bakken; Guizar-Sicairos, Manuel; Høydalsvik, Kristin; He, Jianying; Andreasen, Jens Wenzel; Zhang, Zhiliang; Breiby, Dag Werner (Journal article; Peer reviewed, 2015)
      Phase-contrast three-dimensional tomograms showing in unprecedented detail the mechanical response of a micro-composite subjected to a mechanical compression test are reported. The X-ray ptychography images reveal the ...

    • Quantitative analysis of tumor heterogeneity based on magnetic resonance images 

      Trajkovska, Elena (Master thesis, 2019)
      Background: Solid tumors are commonly heterogeneous because they consist of cancer cells with different aggressiveness. In quantitative cancer imaging, such as magnetic resonance imaging (MRI), the heterogeneity will not ...

    • Quantitative Analysis of Vascular Function in Malignant Tumours 

      Vidar Hemmingsen (Master thesis, 2018)
      Sammendrag: Formålet med denne avhandlingen var å undersøke den vaskulære funksjonen i ondartede svulster ved hjelp av histologiske og immunohistokjemiske (IHC) snitt og se etter assosiasjoner med magnetresonanstomografi ...

    • Quantitative analysis of {100} Al plate/lath- and Al rod-shaped precipitates in an aged Al-Cu-Mg-Si alloy using TEM 

      Marat, Gazizov; Holmestad, Randi; Marioara, Calin Daniel; Kaibyshev, Rustam (Peer reviewed; Journal article, 2021)
      Precipitate parameters, such as length, diameter and thickness of rationally oriented {100}Al plate/lath-shaped and Al rod-shaped precipitates in an age-hardenable Al-Cu-MgSi alloy have been examined quantitatively. An ...

    • Quantitative atomic force microscopy and light microscopy of hydrogels and cells 

      Sherstova, Tatyana (Doctoral theses at NTNU;2016:343, Doctoral thesis, 2016)
      Quantitative biology is an interdisciplinary subject that combines biology, mathematics and physics. Intimate collaboration on a global scale between these disciplines results in a wide variety of tools and innovation in ...

    • Quantitative characterization of articular cartilage using Mueller matrix imaging and multiphoton microscopy 

      Ellingsen, Pål Gunnar; Lilledahl, Magnus Borstad; Aas, Lars Martin Sandvik; Davies, Catharina De Lange; Kildemo, Morten (Journal article; Peer reviewed, 2011)
      The collagen meshwork in articular cartilage of chicken knee is characterized using Mueller matrix imaging and multiphoton microscopy. Direction and degree of dispersion of the collagen fibers in the superficial layer are ...

    • Quantitative comparison of PET performance-Siemens Biograph mCT and mMR 

      Karlberg, Anna Maria; Sæther, Oddbjørn; Eikenes, Live; Goa, Pål Erik (Peer reviewed; Journal article, 2016)
      Background: Integrated clinical whole-body PET/MR systems were introduced in2010. In order to bring this technology into clinical usage, it is of great importance to compare the performance with the well-established PET/CT. ...

    • Quantitative Comparison of PET/MR and PET/CT for Imaging of Lymphoma Patients 

      Olsen, Silje Kjærnes (Master thesis, 2015)
      Positron emission tomography/computed tomography (PET/CT), a multimodality imaging tool, is today the golden standard in diagnosis, staging and response monitoring of lymphoma patients, while it is investigated if positron ...

    • Quantitative Convergent Beam Electron Diffraction and Charge Density Studies 

      Friis, Jesper (Dr. ingeniøravhandling, 0809-103X; 2003:97, Doctoral thesis, 2003)
      Very accurate low-order structure factors have been measured in copper, magnesium and strontium titanate using quantitative convergent beam electron diffraction (QCBED). The charge density distribution in these materials ...

    • Quantitative imaging for radiotherapy purposes 

      Gurney-Champion, Oliver J.; Mahmood, Faisal; van Schie, Marcel; Julian, Robert; George, Ben; Philippens, Marielle E.P.; van der Heide, Uulke A.; Thorwarth, Daniela; Redalen, Kathrine (Peer reviewed; Journal article, 2020)
      Quantitative imaging biomarkers show great potential for use in radiotherapy. Quantitative images based on microscopic tissue properties and tissue function can be used to improve contouring of the radiotherapy targets. ...

    • Quantitative Polychromatic X-Ray Computed Tomography - Experiments and Simulations 

      Tekseth, Kim Robert Bjørk (Master thesis, 2018)
      X-ray Computed Tomography (CT) is an extensively used technique conventionally utilizing either absorption-contrast or phase-contrast to non-destructively image the internal structures of objects. While CT instruments using ...

    • Quantitative scanning transmission electron microscopy studies on heterostructured GaAs nanowires 

      Kauko, Hanne (Doktoravhandlinger ved NTNU, 1503-8181; 2013:369, Doctoral thesis, 2013)
      This thesis presents a quantitative high-angle annular dark eld scanning transmission electron microscopy (HAADF STEM) study on heterostructured GaAs-based nanowires (NWs). Quantitative HAADF STEM was employed to investigate ...

    • Quantitative strain analysis of InAs/GaAs quantum dot materials 

      Vullum, Per Erik; Nord, Magnus Kristofer; Vatanparast, Maryam; Thomassen, Sedsel Fretheim; Boothroyd, Chris; Holmestad, Randi; Fimland, Bjørn-Ove; Reenaas, Turid Worren (Journal article; Peer reviewed, 2017)
      Geometric phase analysis has been applied to high resolution aberration corrected (scanning) transmission electron microscopy images of InAs/GaAs quantum dot (QD) materials. We show quantitatively how the lattice mismatch ...

    • Quantitative studies of clustering and precipitation in Al-Mg-Si(-Cu) alloys 

      Torsæter, Malin (Doktoravhandlinger ved NTNU, 1503-8181; 2011:212, Doctoral thesis, 2011)
      In the present work, the clustering and precipitation reactions in age hardenable Al-Mg- Si(-Cu) (6xxx) alloys have been studied by atom probe tomography (APT), transmission electron microscopy (TEM) related methods and ...