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Optimization in CT: Evaluation of dose saving potential in a thorax-abdomen/pelvis protocol using iterative reconstruction techniques
(Master thesis, 2013)The use of computed tomography (CT) has increased dramatically during the last two decades and contributes today to 80% of the estimated population dose caused by radiological examinations. Recent publications have shown ... -
Optimization of diffusion weighted-MRI: a study of T2 and ADC in healthy fibroglandular breast tissue
(Master thesis, 2019)Diffusjonsvektet magnetisk resonansavbildning er blitt stadig mer populært i deteksjon, gradering og evaluering av respons på behandling i brystkreft. Den tilsynelatende diffusjonskonstanten (ADC) reduseres i stor grad i ... -
Optimization of volumetric modulated arc therapy of cervical cancer - Retrospective treatment planning for simultaneous integrated boost, with and without flattening filter
(Master thesis, 2018)The traditional treatment of cervical cancer is external beam radiotherapy (EBRT) combined with brachytherapy (BT) and concomitant chemotherapy. BT is used to boost the primary tumor in the pelvic area towards the end of ... -
Optimization on Matrix Manifolds with Applications to Blind Source Separation
(Master thesis, 2013)Studere hvordan konsepter fra optimeringsteori generaliseres til mangfoldigheter, mer spesifikt matrisemangfoldigheter, og vurdere hvordan dette kan anvendes på "blind source separation"-problemer -
Optimization, Cellular Uptake and Cytotoxicity of Lipid Nanoparticles
(Master thesis, 2016)Chemotherapy can potentially be greatly improved by using nanoparticles as drug carriers to deliver chemotherapeutic drugs specifically to cancer cells. Lipid nanoparticles can encapsulate hydrophobic drugs that have low ... -
Optimized Miniature Two-Photon Microscopy for Imaging Neuronal Activity in Freely Moving Mice
(Master thesis, 2021)Oppfinnelsen av nye avbildningsteknikker har alltid banet vei for påfølgende gjennombrudd i biovitenskapen og det såkalte to-foton mikroskopet er intet unntak. Teknikken muliggjør rask, kalsiumbasert avbildning av ... -
Optimizing an Infrared Camera for Observing Atmospheric Gravity Waves from a CubeSat Platform
(Master thesis, 2012)The NTNU Test Satellite (NUTS) is a double CubeSat deigned by master students at NTNU. The goal of the project is to image atmospheric gravity waves in the OH airglow layer. This thesis explores the theory behind gravity ... -
Optimizing hydroxyl airglow retrievals from long-slit astronomical spectroscopic observations
(Journal article; Peer reviewed, 2017)Astronomical spectroscopic observations from ground-based telescopes contain background emission lines from the terrestrial atmosphere's airglow. In the near infrared, this background is composed mainly of emission from ... -
Optimum operation of wave power converter
(Others, 1976) -
Ordering and Preferred Orientation in Films of Polymeric Semiconductors
(Dr. ingeniøravhandling, 0809-103X; 2002:145, Doctoral thesis, 2003)Various aspects related to molecular ordering and preferred orientation in films of polymeric semiconductors is presented. The polymers poly(alkylthiophene)s (PATs) and poly(3,4- ethylenedioxythiophene)s (PEDOTs), being ... -
Organic Contaminations in Sub-Marine AC and DC High-Voltage Cables
(Master thesis, 2012)In dielectric insulating materials subjected to alternating electric fields there are energy losses associated with polarization mechanisms and resistivity. A typical dielectric material used for insulation of high voltage ... -
Orientation dependent pinning of (sub)grains by dispersoids during recovery and recrystallization in an Al–Mn alloy
(Peer reviewed; Journal article, 2023)The recrystallized grain size and texture in alloys can be controlled via the microchemistry state during thermomechanical processing. The influence of concurrent precipitation on recovery and recrystallization is here ... -
Orientation effects on energy dispersive spectroscopy in TEM
(Master thesis, 2020)Energispredningsspektroskopi (EDX) er den mest brukte metoden for ̊a bestemme et ma-terials komposisjon p ̊a nanometer-skala ved transmisjonselektronmikroskoper(TEM). Re-sultatene p ̊avirkes av hvordan den innkommende ... -
Orientation relationship between b-Si3N4 and Si in multicrystalline silicon ingots for PV applications
(Journal article; Peer reviewed, 2018)β-Si3N4 particles are thought to be nucleation sites for silicon in multicrystalline silicon (mc-Si) ingots for PV applications. The orientation relationship (OR) between Si and β-Si3N4 has been investigated by transmission ... -
Orientation relationships of phase transformation in α-Al12Mn3Si pseudomorphs after plate-like Al6Mn precipitate in an AA3004 Al-Mn based alloy
(Journal article; Peer reviewed, 2017)The phase transformation in the plate-like precipitates of Al6Mn in an AA3004 Al-Mn based alloy, which was prepared by a chemical extraction technique, was investigated using transmission electron microscopy. The boiling-phenol ... -
Orientational mapping of minerals in Pierre shale using X-ray diffraction tensor tomography
(Peer reviewed; Journal article, 2021)Shales have a complex mineralogy with structural features spanning several length scales, making them notoriously difficult to fully understand. Conventional attenuation-based X-ray computed tomography (CT) measures density ... -
Oscillatory, ultradian movements in Arabidopsis: Biophysical studies of rhythms in plants onboard the International Space Station and on Earth
(Doktoravhandlinger ved NTNU, 1503-8181; 2009:8, Doctoral thesis, 2009) -
Osteocyte-Like Cells Differentiated From Primary Osteoblasts in an Artificial Human Bone Tissue Model
(Peer reviewed; Journal article, 2023)In vitro models of primary human osteocytes embedded in natural mineralized matrix without artificial scaffolds are lacking. We have established cell culture conditions that favored the natural 3D orientation of the bone ... -
Osteogenic differentiation of human mesenchymal stem cells in mineralized alginate matrices
(Journal article; Peer reviewed, 2015)Mineralized biomaterials are promising for use in bone tissue engineering. Culturing osteogenic cells in such materials will potentially generate biological bone grafts that may even further augment bone healing. Here, ... -
Oxygen-Controlled Phase Segregation in Poly(N-isopropylacrylamide)/Laponite Nanocomposite Hydrogels
(Journal article; Peer reviewed, 2013)