Recent additions

  • Simulating and characterizing carbon based solar thermal absorbers 

    Jain, Amitap (Master thesis; Mastergradsoppgave, 2014-05-16)
    The main objective of this project is to determine and characterize the optical and structural properties of carbon nanotube (CNT) coated aluminum substrates to facilitate better understanding regarding their suitability ...
  • Quantifying influence of local air pollution on measurements in Ny-Ålesund and at the Zeppelin station 

    Dekhtyareva, Alena (Master thesis; Mastergradsoppgave, 2014-06-02)
    In order to keep the scientific significance of the Ny-Ålesund station on Svalbard as the key place for the monitoring of background air it is needed to assess the influence from local human activities on the air quality. ...
  • On the relation between type-II ion outflow and naturally enhanced ion acoustic lines in the polar ionosphere 

    Di Loreto, Massimo (Master thesis; Mastergradsoppgave, 2013-11-15)
    In this work we investigated the relation between type-II ion outflows and NEIALs. Currently, several ion outflows acceleration mechanisms and NEIALs generation theories have been proposed. In the first part of this thesis ...
  • Type-I ion outflow from the high latitude ionosphere 

    Argese, Chiara (Master thesis; Mastergradsoppgave, 2013-11-15)
    The aim of this thesis is to study type-I ion outflows in the high latitude ionosphere. Type-I ion outflows are characterized by strong perpendicular electric fields, enhanced and anisotropic ion temperatures and low ...
  • Statistical analysis of fluctuations in the Alcator C-Mod scrape-off layer 

    Fritzner, Sindre Markus (Master thesis; Mastergradsoppgave, 2013-06-30)
    Experimental data from Alcator C-Mod have been used to analyze large density events occurring at the edge of fusion reactors. The data acquisition methods used are gas puff imaging and Langmuir probes. The data consist of ...
  • Reduced models for geophysical fluid dynamics 

    Sortland, Daniel Selnes (Master thesis; Mastergradsoppgave, 2013-07-16)
    This thesis present a self-consistent derivation of reduced fluid models for geophysical dynamics confined to the midlatitude region. The reduced model will be derived by use of a regular perturbation method, that gives ...
  • Temperature sensitivity of waveguide Mach-Zehnder interferometer 

    Sokolov, Viktor (Master thesis; Mastergradsoppgave, 2013-05-31)
    This thesis is part of a project that aims to develop a sensor for the detection of methane in the air and in water based on a waveguide Mach-Zehnder interferometer. The main application of this sensor is monitoring the ...
  • Long-range memory in Earth surface temperatures: spatial scale dependence and land-sea differences 

    Fredriksen, Hege-Beate (Master thesis; Mastergradsoppgave, 2013-05-15)
    The use of long-range memory models as a description of the noise in Earth surface temperatures has increased the recent years, and as a measure of the persistence for such time series we have the Hurst exponent. It is ...
  • Suppression of fingering instabilities in superconductors by magnetic braking 

    Lator, Elijah (Master thesis; Mastergradsoppgave, 2012-11)
    Superconductors are materials that can transport electric current without resistance and loss of energy at low temperature. This thesis is a theoretical investigation problem about the thermomagnetic instability in ...
  • Drift wave turbulence and zonal flows 

    Meyer, Ole Hauke Heinz (Master thesis; Mastergradsoppgave, 2012-11-15)
    Anomalously large radial transport levels in fusion devices is commonly believed to be the cause of small-scale edge localized electrostatic drift wave turbulence. We review the basic drift wave instability mechanism and ...
  • Spectral analysis of radar coherent echoes and its relation to turbulence 

    Pokhrel, Marshal (Master thesis; Mastergradsoppgave, 2012-11)
    The measurements of polar mesosphere summer echoes has been performed since a long time by the ground based techniques with EISCAT VHF and UHF radar system and recently with MORRO. Based on these observation, my thesis is ...
  • Studies of plasma potential with emissive probes in the low temperature plasma experiment NJORD 

    Schregel, Christian-Georg (Master thesis; Mastergradsoppgave, 2012-11-02)
    In this thesis, the concept of an emissive probe has been used to obtain the plasma potential in the low temperature plasma experiment NJORD. An emissive probe is a probe concept in which a wire is heated strong enough to ...
  • Multi-sensor data fusion and feature extraction for forest applications 

    Yitayew, Temesgen Gebrie (Mastergradsoppgave; Master thesis, 2012-05-15)
    The purpose of this study was to extract, evaluate and select different multi-frequency polarimetric SAR and multi-spectral optical features to demonstrate the benefit of multi-sensor data fusion for forest applications. ...
  • Fotoelektriske observasjonar av stjerneokkultasjonar ved måneranda 

    Høydalsvik, Stein (Master thesis; Mastergradsoppgave, 1980-01)
    Analyser av okkultasjonskurvene frå fotoelektriske observasjonar viser at ein stor del av dei observerte stjernene er dobbelstjerner. Okkultasjonsteknikken kan lett åtskilje stjerner som har ein vinkelavstand større enn ...
  • Trapping of Nanoparticles with Optical Waveguides 

    Dullo, Firehun Tsige (Master thesis; Mastergradsoppgave, 2011-05-18)
    Over the last few years, the notion that links optical trapping with strong intensity of light (high energy photon) not only forced the modification of optical tweezer, but it also open up the door for evanescent wave field ...
  • Frequency-dependent magnetizability 

    Anelli, Marco (Master thesis; Mastergradsoppgave, 2010-11-15)
    This work discusses the theory of the magnetizability. The magnetizability is a molecular property defined as the second-order perturbation of the energy in the presence of an external magnetic field. When the magnetic ...
  • Simulations of plasma filament dynamics in toroidal geometry 

    Rønningen, Petter (Master thesis; Mastergradsoppgave, 2010-05-18)
    Interchange driven propagation of so-called "blobs" arises in basic laboratory plasmas, in the scrape-off layer of fusion plasmas and as Equatorial Spread-F (ESF) phenomena. The propagation of such blobs has been demonstrated ...
  • Numerical studies of radial filament motion in toroidally confined plasmas 

    Kube, Ralph (Master thesis; Mastergradsoppgave, 2010-05)
    Numerical studies of radial filament motions in the SOL of toroidally confined plasmas are studies. We use a two dimensional two-field model to characterize blob-like structures in the radial-poloidal domain. These structures ...
  • A multiwavelet approach to the direct solution of the Poisson equation: implementation and optimization 

    Jensen, Stig Rune (Master thesis; Mastergradsoppgave, 2009-11-15)
    This work is presenting a fully numerical approach for the direct solution of the Poisson equation for the electrostatic potential given by an arbitrary charge density. Efficient solution of this equation is important in ...
  • A numerical study of planar elliptical antennas applied to ultrawideband (UWB) imaging of breast tissue 

    Brelum, Sindre Holsbøe (Master thesis; Mastergradsoppgave, 2008-08)
    The thesis discusses the possibility of using ultrawideband (UWB) radar to detect breast cancer. At the present time, X-ray mammography and ultrasound are the golden standard imaging techniques for detection and evaluation ...

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