Now showing items 1-20 of 908

    • Elastic wave velocities and attenuation under methane hydrate growth in Bentheim sandstone - Measurements and modelling 

      Sæther, Mathias (The University of Bergen, 2018-12-18)
      Due to the potential for using methane hydrates as an energy source, localizing, monitoring and describing hydrate deposit areas are of interest. This has previously been attempted by using acoustic methods and thus ...
      Doctoral thesis
    • Simulations of acoustic transmission loss of Fin whale calls reaching the LoVe Ocean Observatory 

      Øygard, Sigrid Husebø (The University of Bergen, 2018-12-18)
      Equinor has plans to develop a whale monitoring station using acoustic animal destiny estimation at their cabled ocean observatory, the LoVe Observatory, in Lofoten-Vesterålen basin. The fauna of this area is of remarkable ...
      Master thesis
    • Impact of variable proton relative biological effectiveness on estimates of secondary cancer risk in paediatric cancer patients 

      Grandemo, Vilde (The University of Bergen, 2018-12-12)
      Background: Proton therapy has an increased dose-conformity compared to conventional radiotherapy with photons, and paediatric cancer patients receiving cranio-spinal irradiation (CSI) are routinely referred to this treatment ...
      Master thesis
    • Investigating the energy yield of rain cells 

      Sigurdsson, William Nævdal (The University of Bergen, 2018-12-08)
      Harvesting energy from rain has been done indirectly for hundreds of years by building dams or reservoirs. Recently, research has been made into gathering energy from individual raindrops. One of the discovered methods ...
      Master thesis
    • Modelling of Low Salinity Surfactant Polymer Coreflood Experiments 

      Nerbøvik, Sivert Mordal (The University of Bergen, 2018-12-07)
      In recent years, there has been a growing interest in the effect of varying brine composition during waterflooding. Several studies on low salinity water injection have been conducted, and the results indicate a potential ...
      Master thesis
    • Inclusive J/ψ cross section in proton-proton collisions at the center-of-mass energy 13TeV with ALICE 

      Lofnes, Ingrid Mckibben (The University of Bergen, 2018-12-07)
      This thesis describes the inclusive cross section measurement of the J/ψ meson in the di-electron channel measured at mid-rapidity in proton-proton collisions at the center-of-mass energy 13 TeV. The analyzed data sample ...
      Master thesis
    • Characterization of the ALPIDE chip with Helium-4 ions for Proton Computed Tomography 

      Huiberts, Simon Kristian (The University of Bergen, 2018-12-06)
      Particle therapy has become an appealing therapeutic option for patients with various tumor types. The physical properties of charged particles allow for an improved dose distribution conformality compared to conventional ...
      Master thesis
    • Effect of Free Water Elimination on Diffusion Indices in Healthy Volunteers and Patients with Multiple Sclerosis 

      Berg, Emile Schjeldsøe (The University of Bergen, 2018-11-08)
      Diffusion tensor imaging (DTI) is a technique in magnetic resonance imaging (MRI) that can be used to image the brain microstructure beyond the resolution that is achievable using conventional imaging. By utilizing DTI, it ...
      Master thesis
    • Design of an Embedded Readout System for the ALOFT Gamma-Ray Detector Instrument 

      Heigre, Mats Fredrik (The University of Bergen, 2018-10-24)
      Birkeland Center for Space Science has proposed a campaign known as the Airborne Lightning Observatory for FEGS & TGFs (ALOFT) to study Terrestrial Gamma-Ray Flashes (TGFs). TGFs are the most energetic natural phenomena ...
      Master thesis
    • Design and Simulation of Pixel Layout and Data Processing Algorithms for the DEEP Instrument 

      Andersen, Hogne (The University of Bergen, 2018-10-17)
      A team of researchers at Birkeland Centre for Space Science is developing an instrument that is able to measure particle precipitation into the atmosphere. The instrument consist of both electron and proton detectors, hence ...
      Master thesis
    • Identifikasjon av undervannsobjekter ved bruk av ultralyd 

      Spjeld, Cato (The University of Bergen, 2018-09-04)
      Hensikten med dette prosjektet er å undersøke om ultralyd kan benyttes som et detekteringssystem under vann. Det er blitt designet tre ulike reflektorer for å se på refleksjonsegenskapene til disse. Fjernstyrte undervannsfarkoster ...
      Master thesis
    • Particle size distribution of methane hydrates and particle growth using a CFD-PBM model 

      Mevik, Claus (The University of Bergen, 2018-08-30)
      Gas hydrates are solid crystalline compounds that contain water and gas molecules, and can be considered to be a natural occurring phenomena located in enormous amounts around the world. Particle growth and agglomeration ...
      Master thesis
    • Molecular dynamics study of water and carbon dioxide separation by means of nanotubes - A new method to capture CO2 

      Fimreite, Sjur Sato (The University of Bergen, 2018-08-30)
      Anthropogenic carbon dioxide (CO2) emissions are a huge concern these days. Arguably, but widely accepted, the apparent global climate changes are due to the increasing CO2 concentrations in the atmosphere. Carbon dioxide ...
      Master thesis
    • Thermally excited 630.0 nm emissions in the polar ionosphere 

      Kwagala, Norah Kaggwa (The University of Bergen, 2018-08-24)
      This thesis investigates the importance and significance of thermally excited 630.0 nm emissions in the cusp and polar ionosphere. Thermal excitation by heated ambient electrons in the cusp and polar ionosphere is a rarely ...
      Doctoral thesis
    • Search for a heavy Higgs boson decaying into a Z boson and another heavy Higgs boson in the ℓℓbb final state in pp collisions at √s=13 TeV with the ATLAS detector 

      Aaboud, Morad; Aad, Georges; Abbott, Brad; Abdinov, Ovsat Bahram oglu; Abeloos, Baptiste; Abidi, Syed Haider; AbouZeid, Hass; Abraham, Nadine L.; Abramowicz, Halina; Abreu, Henso; Buanes, Trygve; Dale, Ørjan; Eigen, Gerald; Fomin, Nikolai; Lipniacka, Anna; Martin dit Latour, Bertrand; Mæland, Steffen; Stugu, Bjarne; Yang, Zongchang; Zalieckas, Justas; Bugge, Magnar Kopangen; Cameron, David Gordon; Catmore, James Richard; Feigl, Simon; Franconi, Laura; Garonne, Vincent; Gramstad, Eirik; Hellesund, Simen; Morisbak, Vanja; Oppen, Henrik; Ould-Saada, Farid; Read, Alexander Lincoln; Røhne, Ole Myren; Sandaker, Heidi; Serfon, Cédric; Stapnes, Steinar; Vadla, Knut Oddvar Høie; Abulaiti, Yiming; Acharya, Bobby S.; Adachi, Shunsuke; Adamczyk, Leszek; Adelman, Jareed; Adersberger, Michael; Adye, Tim; Affolder, Anthony Allen; Afik, Yoav; Agheorghiesei, Catalin; Aguilar Saavedra, Juan Antonio; Ahmadov, Faig; Aielli, Giulio; ATLAS, Collaboration (Elsevier, 2018-08-10)
      A search for a heavy neutral Higgs boson, A, decaying into a Z boson and another heavy Higgs boson, H, is performed using a data sample corresponding to an integrated luminosity of 36.1 fb−1 from proton– proton collisions ...
      Journal article
    • Seasonal and Solar Cycle Variations of Thermally Excited 630.0 nm Emissions in the Polar Ionosphere 

      Kwagala, Norah Kaggwa; Oksavik, Kjellmar; Lorentzen, Dag Arne; Johnsen, Magnar Gullikstad; Laundal, Karl Magnus (American Geophysical Union, 2018-08)
      Solar cycle and seasonal variations have been found in the occurrence of strong thermally excited 630.0 nm emissions in the polar ionosphere. Measurements from the European Incoherent Scatter Svalbard Radar have been used ...
      Journal article
    • Pressure Development in Dust Explosions - An experimental study in the 20-liter Siwek sphere and a 0.5 m³ non-standardized vessel 

      Skavland, Camilla Engström (The University of Bergen, 2018-07-27)
      This thesis describes an experimental investigation of pressure development in dust explosions, using two different volumes. The 20-liter Siwek sphere is a standard explosion test apparatus used for determining maximum ...
      Master thesis
    • Challenges and Strategic Research Plans for Earth and Heliosphere: Research Infrastructures, Projects and Initiatives 

      Mann, Ingrid; Kauristie, Kirsti; Bamford, Ruth; McCrea, Ian; Moen, Jøran Idar; Oksavik, Kjellmar; Yamauchi, Masanori; Johnsen, Magnar Gullikstad; Turunen, Esa (Cambridge University Press, 2018-07-24)
      We describe existing research infrastructures relevant for space weather and open issues of space weather research including the need for sustainable observation networks and for high-quality data products as basis for ...
      Journal article
    • Search for heavy particles decaying into top-quark pairs using lepton-plus-jets events in proton–proton collisions at √s = 13 TeV with the ATLAS detector 

      Aaboud, Morad; Aad, Georges; Abbott, Brad; Abdinov, Ovsat Bahram oglu; Abeloos, Baptiste; Abidi, Syed Haider; AbouZeid, Hass; Abraham, Nadine L.; Abramowicz, Halina; Abreu, Henso; Buanes, Trygve; Dale, Ørjan; Eigen, Gerald; Fomin, Nikolai; Lipniacka, Anna; Martin dit Latour, Bertrand; Mæland, Steffen; Stugu, Bjarne; Yang, Zongchang; Zalieckas, Justas; Bugge, Magnar Kopangen; Cameron, David Gordon; Catmore, James Richard; Feigl, Simon; Franconi, Laura; Garonne, Vincent; Gramstad, Eirik; Hellesund, Simen; Morisbak, Vanja; Oppen, Henrik; Ould-Saada, Farid; Pedersen, Maiken; Read, Alexander Lincoln; Røhne, Ole Myren; Sandaker, Heidi; Serfon, Cédric; Stapnes, Steinar; Vadla, Knut Oddvar Høie; Abulaiti, Yiming; Acharya, Bobby S.; Adachi, Shunsuke; Adamczyk, Leszek; Adelman, Jareed; Adersberger, Michael; Adigüzel, Aytül; Adye, Tim; Affolder, Anthony Allen; Afik, Yoav; Agheorghiesei, Catalin; Aguilar Saavedra, Juan Antonio; ATLAS, Collaboration (Springer, 2018-07-09)
      Abstract A search for new heavy particles that decay into top-quark pairs is performed using data collected from proton–proton collisions at a centre-of-mass energy of 13 TeV by the ATLAS detector at the Large Hadron ...
      Journal article
    • Noise and Cluster Size Studies of ALPIDE-CMOS Pixel Sensor for pCT 

      Afroz, Susmita (The University of Bergen, 2018-07-04)
      The use of proton beam has been introduced in medical physics for therapeutic purposes in cancer treatment and it has been proven much more efficient than conventional X-ray. Treatment planning in proton therapy is usually ...
      Master thesis