Blar i Department of Physics and Technology på tittel

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    • Low Salinity Waterflood in Combination with Surfactant/Polymer: Effect of Brine Composition 

      Mjøs, Jon Endre Seljeset (Master thesis, 2014-06-02)
      The effect of low salinity water (LSW) on enhanced oil recovery has been known for decades. Although much research is done on the topic, a general agreement of the prevailing mechanism for the low salinity effect has still ...

    • Low Salinity Waterflood in Combination with Surfactant/Polymer; Effect of Surfactant Slug Size 

      Al-Ajmi, Adnan Ibrahim Ahmed (Master thesis, 2014-06-02)
      In last years, there has been a growing interest in the effect of reducing salinity of injected water in oil recovery. Many studies have showed that low salinity waterflooding is a promising method that can lead to a ...

    • Low Salinity Waterflood in Combination with Surfactant/Polymer; Effects of Kinetics and Brine Composition 

      Eikrem, Olav Solberg (Master thesis, 2014-06-01)
      Improving the oil recovery beyond what is possible by conventional methods is a topic of great interest, and the potential oil recovery for a field can be improved if unconventional methods are implemented. Reducing the ...

    • Low Salinity Waterflooding in Combination with Surfactant/Polymer. A Field Scale Simulation Study of Hybrid EOR 

      Pedersen, Vilde Loug (Master thesis, 2018-06-27)
      It is projected that 77% of energy consumption will originate from fossil fuels in 2040, indicating a continuous demand for crude oil [1]. Nevertheless, more than half of the hydrocarbons produced at present originate from ...

    • Low-energy electron ionization mass spectrometer for efficient detection of low mass species 

      Bergin, Matthew; Ward, David J.; Lambrick, Sam; von Jeinsen, N. A.; Holst, Bodil; Ellis, John; Jardine, Andrew P.; Allison, William (Journal article; Peer reviewed, 2021)
      The design of a high-efficiency mass spectrometer is described, aimed at residual gas detection of low mass species using low-energy electron impact, with particular applications in helium atom microscopy and atomic or ...

    • Low-energy probes of no-scale SU(5) super-GUTs 

      Ellis, John; Evans, Jason L.; Nagata, Natsumi; Olive, Keith A.; Velasco-Sevilla, Liliana (Journal article; Peer reviewed, 2021)
      We explore the possible values of the \(\mu \rightarrow e \gamma \) branching ratio, \(\text {BR}(\mu \rightarrow e\gamma )\), and the electron dipole moment (eEDM), \(d_e\), in no-scale SU(5) super-GUT models with the ...

    • Low-energy surface vibration measurements on the alpha-quartz (0001) surface 

      Luneng, Jenny Louise (Master thesis, 2011)
      Despite the enormous range of usages, only little is known about the dynamic and structural properties of quartz (SiO2) surfaces on the atomic scale. The main reason for this is probably that quartz is an insulator, with ...

    • Low-temperature microwave plasma chemical vapour deposition of nanocrystalline diamonds for erosion protection on wind turbine blades 

      Lothe, John Benjamin (Master thesis, 2021-06-01)

    • Lower-Hybrid Drift Waves Driving Electron Nongyrotropic Heating and Vortical Flows in a Magnetic Reconnection Layer 

      Chen, Li-Jen; Wang, Shan; Le Contel, Olivier; Rager, A.; Hesse, Michael; Drake, J. F.; Dorelli, J.; Ng, J.; Bessho, Naoki; Graham, D. B.; Wilson, Lynn B.; Moore, T. E.; Giles, B. L.; Paterson, W.; Lavraud, B.; Genestreti, K.; Nakamura, Rumi; Khotyaintsev, Yuri V.; Ergun, R.E.; Torbert, Roy B.; Burch, J. L.; Pollock, C.; Russell, Christopher T.; Lindqvist, Per-Arne; Avanov, Levon (Journal article; Peer reviewed, 2020)
      We report measurements of lower-hybrid drift waves driving electron heating and vortical flows in an electron-scale reconnection layer under a guide field. Electrons accelerated by the electrostatic potential of the waves ...

    • Lower-thermosphere–ionosphere (LTI) quantities: current status of measuring techniques and models 

      Palmroth, Minna; Grandin, Maxime; Sarris, Theodoros E.; Doornbos, Eelco; Tourgaidis, Stylianos; Aikio, Anita; Buchert, Stephan C.; Clilverd, Mark A.; Dandouras, I; Heelis, Roderick A.; Hoffmann, A; Ivchenko, N.; Kervalishvili, G.; Knudsen, D.; Kotova, A; Liu, H.-L.; Malaspina, D; March, G.; Marchaudon, A; Marghitu, Octav; Matsuo, T; Miloch, Wojciech Jacek; Moretto, Therese; Mpaloukidis, D; Olsen, NIls; Pfaff, R.; Papadakis, K; Pirnaris, Panagiotis; Siemes, C.; Stolle, Claudia; Suni, J.; van den IJssel, J.; Verronen, Pekka T.; Visser, P.; Yamauchi, Masatoshi (Journal article; Peer reviewed, 2021)
      The lower-thermosphere–ionosphere (LTI) system consists of the upper atmosphere and the lower part of the ionosphere and as such comprises a complex system coupled to both the atmosphere below and space above. The atmospheric ...

    • Luminosity determination in pp collisions at s=7 TeV using the ATLAS detector at the LHC 

      ATLAS, Collaboration; Aad, Georges; Abbott, Brad; Abdallah, Jalal; Abdelalim, A. A.; Buanes, Trygve (Peer reviewed; Journal article, 2011-04-27)
      Measurements of luminosity obtained using the ATLAS detector during early running of the Large Hadron Collider (LHC) at s=7 TeV are presented. The luminosity is independently determined using several detectors and multiple ...

    • Læring av matematikk gjennom prosjekter i teknologi og design 

      Kolstø, Stein Dankert (Journal article, 2006)

    • Læring av naturfag og matematikk gjennom prosjekter i teknologi og design 

      Kolstø, Stein Dankert (Journal article, 2006)
      Jeg nærer en uro. Fagområdet teknologi og design skal inkluderes i matematikkfaget, samt i naturfag og kunst og håndverk. Men vil elevene kunne lære naturfag og matematikk eller få økt innsikt i hvordan anvende naturfag ...

    • Magnetic coordinate systems 

      Laundal, Karl Magnus; Richmond, Arthur D. (Peer reviewed; Journal article, 2017-03)
      Geospace phenomena such as the aurora, plasma motion, ionospheric currents and associated magnetic field disturbances are highly organized by Earth’s main magnetic field. This is due to the fact that the charged particles ...

    • Magnetic docking stations for remotely powered light emitting diodes 

      Helseth, Lars Egil; Wen, Hanzhen (Journal article; Peer reviewed, 2022)
      Light emitting diodes (LEDs) are efficient light sources which due to low power consumption often are considered for demonstrations of wireless energy transmission. It is often not only necessary to power these light sources ...

    • Magnetic Effects of Plasma Pressure Gradients in the Upper F Region 

      Laundal, Karl Magnus; Hatch, Spencer Mark; Moretto, Therese (Peer reviewed; Journal article, 2019)
      The Swarm satellites fly at altitudes that at polar latitudes are generally assumed to only contain currents that are aligned with the local magnetic field. Therefore, disturbances along the main field direction are mainly ...

    • Magnetic Reconnection and Heavy Ions 

      Kolstø, Håkon Midthun (Doctoral thesis, 2022-09-28)
      Majoriteten av materien i det observerbare universet eksisterer i form av en plasma. Plasmaet er karakteriseres av en samling ladede partikler som oppfyller visse elektrodynamiske egenskaper hvor den typiske potensielle ...

    • Magnetic Reconnection in a Quasi-Parallel Shock: Two-Dimensional Local Particle-in-Cell Simulation 

      Bessho, Naoki; Chen, Lijen; Wang, Shan; Hesse, Michael; Wilson, Lynn B. (Peer reviewed; Journal article, 2019)
      Magnetic reconnection in a quasi‐parallel bow shock is investigated with two‐dimensional local particle‐in‐cell simulations. In the shock transition and downstream regions, large amplitude magnetic fluctuations exist, and ...

    • Magnetic Reconnection in Three Dimensions: Modeling and Analysis of Electromagnetic Drift Waves in the Adjacent Current Sheet 

      Ergun, Robert E; Hoilijoki, Sanni; Ahmadi, N.; Schwartz, S.J.; Wilder, F.D.; Drake, James F.; Hesse, Michael; Shay, Michael A.; Ji, H.; Yamada, M; Graham, Daniel B.; Cassak, P.A.; Swisdak, M; Burch, J. L.; Torbert, R.B.; Holmes, JC; Stawarz, JE; Goodrich, Katherine A; Eriksson, S.; Strangeway, Robert J.; LeContel, O (Journal article; Peer reviewed, 2019)
      We present a model of electromagnetic drift waves in the current sheet adjacent to magnetic reconnection at the subsolar magnetopause. These drift waves are potentially important in governing 3‐D structure of subsolar ...

    • Magnetic Resonance Imaging of Hydrate Phase Transitions in Sediments 

      Veland, Veronica Flæsland (Master thesis, 2017-12-21)
      Natural gas hydrates, simplified described as gas compressed in ice, are a substance existing in large quantities around the world. Their existence requires elevated pressures and low temperature. They are therefore found ...