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Atmospheric ozone above Troll station, Antarctica observed by a ground based microwave radiometer
(Journal article; Peer reviewed, 2014)This paper describes the stratospheric and mesospheric ozone profiles retrieved from spectral measurements of the 249.96 GHz O3 line, using the British Antarctic Survey's ground-based Microwave Radiometer at Troll (BAS-MRT), ... -
The Effect of Zn on precipitation in Al-Mg-Si alloys
(Journal article, 2014)Effects of addition of Zn (up to 1 wt%) on microstructure, precipitate structure and intergranular corrosion (IGC) in an Al–Mg–Si alloys were investigated. During ageing at 185 °C, the alloys showed modest increases in ... -
Rigid Body Attitude Control
(Master thesis, 2014)Geometric numerical integration schemes have been studied for rigid body attitudecontrol problems. We consider symplectic integrators and present a Lie group varia-tional integrator and a discrete gradient method. The two ... -
A GPU Accelerated Simulator for CO2 Storage
(Master thesis, 2014)The goal of this thesis has been to develop a fast simulator for large-scale migration of CO2 in saline aquifers. We have also focused on being able to let the CO2 storage atlas from the Norwegian Petroleum Directorate ... -
Local dynamics of a randomly pinned crack front: a numerical study
(Journal article; Peer reviewed, 2014)We investigate numerically the dynamics of crack propagation along a weak plane using a model consisting of fibers connecting a soft and a hard clamp. This bottom-up model has previously been shown to contain the competition ... -
Exploring the Randall-Sundrum Universe
(Master thesis, 2014)In this thesis, we will explore the physics of warped extra dimensions. More specifically, we will concentrate on the model set forward by Lisa Randall and Raman Sundrum in their paper, "A Large Mass Hierarchy from a Small ... -
Equipment and Production of Columnar Sea Ice Replica in NTNU Cold Lab
(Master thesis, 2014)This Master's thesis considers an ice tank used for production of ice in a cold lab at NTNU. The goal was to improve the temperature control of the water in the tank. Original sensors were replaced with seven new sensors ... -
Mid-IR ultrashort pulsed fiber-based lasers
(Journal article; Peer reviewed, 2014)We review the latest breakthroughs in ultrafast fiber laser technology in the mid-IR wavelength range ≥2 μm. In particular, we concentrate on two novel laser systems built around passively mode-locked Tm:fiber lasers and ... -
Large-scale Monte Carlo simulations of non-Abelian gauge theories and multicomponent Superconductors
(Doktoravhandlinger ved NTNU, 1503-8181; 2014:252, Doctoral thesis, 2014)This thesis presents six research papers on topics in condensed-matter theory and one paper on a computational method. In two of the papers the focus is on the search for Deconfined Quantum Criticality in models describing ... -
Transmission electron microscopy characterization of quantum dot based intermediate band solar cells
(Master thesis, 2014)In this thesis, two samples of quantum dot based intermediate band solar cells were studied and compared by transmission electron microscopy. These samples were grown on a (100) GaAs substrate, with a general structure ... -
All-fiber optical supercontinuum sources in 1.7-3.2 μm range
(Journal article; Peer reviewed, 2014)We report supercontinuum generation in the 1.7-2.9 μm range with up to 3.08 W of output power and in the range of 1.93-3.18 μm with up to 3.8 W of output power from all-fiber MOPA pulsed systems with Tm-doped fiber mode-locked ... -
Octoxy capped Si nanoparticles synthesized by homogeneous reduction of SiCl4 with crown ether alkalide
(Journal article; Peer reviewed, 2014)Blue-green luminescent octoxy capped Si nanoparticles were synthesized via homogeneous reduction of SiCl4 with the crown ether alkalide K+(15-crown-5)2K− in tetrahydrofuran. The Si nanoparticles were characterized with ... -
Effect of low Cu addition and thermo-mechanical history on precipitation in Al-Mg-Si alloys
(Journal article, 2014)The effect of cooling rate after solution heat treatment and its combination with 1% pre-deformation on precipitation hardening in two Al-Mg-Si alloys is investigated by transmission electron microscopy (TEM), and related ... -
Bacterial Microarrays by Microcontact Printing: Development of a Method for Immobilizing Live Bacteria on Microarrays
(Master thesis, 2014)Traditional microbiological experimental methods generally reveal population-wide statistics and are not capable of revealing variations between individual cells. In an effort to address this, a cheap, quick and easy means ... -
Elastic Full Waveform Inversion of Synthetic Data: Marmousi2 Model Test Study
(Master thesis, 2014)Full waveform inversion (FWI) is a computationally extensive technique used to obtain estimates of subsurface rock parameters from seismic data. Initial models are iteratively improved by fitting forward modeled data to ... -
Full Waveform Inversion of Gas Hydrates: Application to estimate of hydrate saturation
(Master thesis, 2014)Through seismic acquisitions there have been discovered layers beneath the seabedthat consist of pores filled with gas hydrates (GH). These reservoirs are potentialenergy reserves and it is therefore desirable to get an ... -
A high precision method for quantitative measurements of reactive oxygen species in frozen biopsies
(Journal article; Peer reviewed, 2014)Objective: An electron paramagnetic resonance (EPR) technique using the spin probe cyclic hydroxylamine 1-hydroxy-3-methoxycarbonyl-2,2,5,5-tetramethylpyrrolidine (CMH) was introduced as a versatile method for high ... -
Biochemical and Structural Characterization of Neocartilage Formed by Mesenchymal Stem Cells in Alginate Hydrogels
(Journal article; Peer reviewed, 2014)A popular approach to make neocartilage in vitro is to immobilize cells with chondrogenic potential in hydrogels. However, functional cartilage cannot be obtained by control of cells only, as function of cartilage is largely ... -
Retrieval of three-dimensional spatial information from fast in situ two-dimensional synchrotron radiography of solidification microstructure evolution
(Journal article; Peer reviewed, 2014)In situ synchrotron X-ray radiography of columnar dendritic growth in Al–15 wt.% Cu–9 wt.% Si–0.015 wt.% Sr alloy has been carried out with the temporal and spatial resolutions of 100 ms and 0.65 μm, respectively. ... -
Application of Novel Accelerator Research for Particle Therapy
(Master thesis, 2014)This thesis seeks to review the latest trends in hadron therapy devices, and evaluate the potential of novel, researched accelerator concepts for future application. Although the clinical benefits of hadron therapy over ...