Browsing Department of Physics and Technology by Title

Now showing items 1431-1450 of 2126

    • Poisson’s spot with molecules 

      Reisinger, Thomas; Patel, Amil A.; Reingruber, Herbert; Fladischer, Katrin; Ernst, Wolfgang E.; Bracco, Gianangelo; Smith, Henry I.; Holst, Bodil (Peer reviewed; Journal article, 2009)
      In the Poisson-spot experiment, waves emanating from a source are blocked by a circular obstacle. Due to their positive on-axis interference an image of the source the Poisson spot is observed within the geometrical shadow ...

    • The Polar Wind Modulated by the Spatial Inhomogeneity of the Strength of the Earth's Magnetic Field 

      Li, Kun; Förster, Matthias; Rong, Zhaojin; Haaland, Stein; Kronberg, E.; Cui, Jun; Chai, Lihui; Wei, Yong (Journal article; Peer reviewed, 2020)
      When the geomagnetic field is weak, the small mirror force allows precipitating charged particles to deposit energy in the ionosphere. This leads to an increase in ionospheric outflow from the Earth's polar cap region, but ...

    • Polarization-independent CP-violation in SUSY theories 

      Vereshagin, Alexander (Doctoral thesis, 2013-02-01)
      Supersymmetry (SUSY) is a beautiful mathematical concept which binds internal symmetries of a quantum field theory with global symmetries of the space-time. Applications of this approach may stretch from unsolved puzzles ...

    • Polycrystalline Diamond Coating on Orthopedic Implants: Realization and Role of Surface Topology and Chemistry in Adsorption of Proteins and Cell Proliferation 

      Zalieckas, Justas; Rios Mondragon, Ivan; Pobedinskas, Paulius; Kristoffersen, Arne Skodvin; Mohamed-Ahmed, Samih; Gjerde, Cecilie; Høl, Paul Johan; Hallan, Geir; Furnes, Ove Nord; Cimpan, Mihaela-Roxana; Haenen, Ken; Holst, Bodil; Greve, Martin Møller (Journal article; Peer reviewed, 2022)
      Polycrystalline diamond has the potential to improve the osseointegration of orthopedic implants compared to conventional materials such as titanium. However, despite the excellent biocompatibility and superior mechanical ...

    • Polymer Enhanced Foam in Unconsolidated Sand 

      Lande, Silje (Master thesis, 2016-06-01)
      Foam is an EOR technique that significantly can improve the macroscopic sweep efficiency by lowering the gas mobility. Limited stability of conventional surfactants for foam generation is one of the reasons why foam is not ...

    • Population-balance modeling of CO2 foam for CCUS using nanoparticles 

      Eide, Øyvind; Fernø, Martin; Bryant, Steven; Kovscek, Anthony R.; Gauteplass, Jarand (Journal article; Peer reviewed, 2020)
      Foam implementation for carbon capture, utilization and storage (CCUS) can greatly improve CO2 mobility control, resulting in enhanced hydrocarbon production and carbon storage capacity. The use of nanoparticles (NP) to ...

    • Pore- and Core-Scale Insights of Nanoparticle-Stabilized Foam for CO2-Enhanced Oil Recovery 

      Alcorn, Zachary Paul; Føyen, Tore Lyngås; Gauteplass, Jarand; Benali, Benyamine; Soyke, Aleksandra; Fernø, Martin (Journal article; Peer reviewed, 2020)
      Nanoparticles have gained attention for increasing the stability of surfactant-based foams during CO2 foam-enhanced oil recovery (EOR) and CO2 storage. However, the behavior and displacement mechanisms of hybrid ...

    • Pore-level foam generation and flow for mobility control in fractured systems 

      Gauteplass, Jarand; Chaudhary, Kuldeep; Kovscek, Anthony R.; Fernø, Martin A. (Journal article, 2015-03-05)
      Pore-level foam generation, propagation, and sweep efficiency were visualized using silicon-wafer micromodels with an accurate representation of sandstone pore structure, grain shapes and sizes based on thin-section analysis. ...

    • Pore-Level Interpretation of Methane Hydrate Growth and Dissociation with Deionized and Saline Water 

      Iden, Eirik Johan (Master thesis, 2017-06-22)
      Natural gas hydrates are solid crystalline compounds composed of water and gas molecules, located in vast amounts around the world, in subsurface permafrost and oceanic environments. With an increasing demand of energy ...

    • Pore-level Ostwald ripening of CO2 foams at reservoir pressure 

      Benali, Benyamine; Sæle, Aleksandra Magdalena; Liu, Na; Fernø, Martin; Alcorn, Zachary Paul (Journal article; Peer reviewed, 2023)
      The success of foam to reduce CO2 mobility in CO2 enhanced oil recovery and CO2 storage operations depends on foam stability in the reservoir. Foams are thermodynamically unstable, and factors such as surfactant adsorption, ...

    • Pore-scale bubble population dynamics of CO2-foam at reservoir pressure 

      Benali, Benyamine; Føyen, Tore Lyngås; Alcorn, Zachary Paul; Haugen, Malin; Gauteplass, Jarand; Kovscek, Anthony R.; Fernø, Martin (Journal article; Peer reviewed, 2022)
      The flow of CO2 foam for mobility control in porous media is dictated by the foam texture, or bubble density, which is commonly expressed as the number of bubbles per unit of flowing gas. In most high-pressure laboratory ...

    • Pore-scale dynamics for underground porous media hydrogen storage 

      Lysyy, Maksim; Ersland, Geir; Fernø, Martin (Journal article; Peer reviewed, 2022)
      Underground hydrogen storage (UHS) has been launched as a catalyst to the low-carbon energy transitions. The limited understanding of the subsurface processes is a major obstacle for rapid and widespread UHS implementation. ...

    • Pore-scale investigation of methane hydrate phase transitions and growth rates in synthetic porous media 

      Lysyy, Maksim (Master thesis, 2018-06-20)
      A growing demand for energy and natural gas in particular, makes methane gas hydrates a potential target to supplement natural gas production from conventional resources. Several pilot projects have proven the feasibility ...

    • Pore-scale kinetics of calcium dissolution and secondary precipitation during geological carbon storage 

      Liu, Na; Haugen, Malin; Benali, Benyamine; Landa-Marbán, David; Fernø, Martin (Journal article; Peer reviewed, 2023)
      Geological carbon storage (GCS) in deep underground formations presents a significant opportunity to mitigate anthropogenic emissions of carbon dioxide in the context of climate change. The injected carbon dioxide may ...

    • Pore-scale spatiotemporal dynamics of microbial-induced calcium carbonate growth and distribution in porous media 

      Liu, Na; Haugen, Malin; Benali, Benyamine; Landa-Marbán, David; Fernø, Martin (Journal article; Peer reviewed, 2023)
      The naturally occurring bio-geochemical microbial-induced calcium carbonate precipitation (MICP) process is an eco-friendly technology for rehabilitating construction materials, reinforcement of soils and sand, heavy metals ...

    • Pore-scale study of microbial hydrogen consumption and wettability alteration during underground hydrogen storage 

      Liu, Na; Kovscek, Anthony R.; Fernø, Martin Anders; Dopffel, Nicole (Journal article; Peer reviewed, 2023)
      Hydrogen can be a renewable energy carrier and is suggested to store renewable energy and mitigate carbon dioxide emissions. Subsurface storage of hydrogen in salt caverns, deep saline formations, and depleted oil/gas ...

    • Pore-to-Core Laboratory Upscaling and Visualization of Enhanced Oil Recovery and CO2 Storage 

      Gauteplass, Jarand (Doctoral thesis, 2015-01-09)
      The global energy demand increases, and the need for hydrocarbon reserve growth is evident. The maturation of hydrocarbon formations worldwide combined with declining rate of major oil and gas discoveries, have caused a ...

    • Positron bunching and electrostatic transport system for the production and emission of dense positronium clouds into vacuum 

      Aghion, Stefano; Amsler, C; Ariga, A; Ariga, T; Belov, AS; Bonomi, G; Bräunig, P; Bremer, J; Brusa, RS; Cabaret, L; Caccia, M; Caravita, R; Castelli, F; Cerchiari, G; Chlouba, K; Cialdi, S; Comparat, D; Consolati, G; Demetrio, A; Di Noto, L; Doser, M; Dudarev, A; Ereditato, A; Evans, C; Fesel, J; Fontana, A; Forslund, OK; Gerber, S; Giammarchi, M; Gligorova, Angela; Gninenko, S; Guatieri, F; Haider, S; Holmestad, Helga Margrete; Huse, Torkjell; Jernelv, IL; Jordan, E; Kaltenbacher, T; Kellerbauer, A; Kimura, M; Koetting, T; Krasnicky, D; Lagomarsino, V; Lebrun, P; Lansonneur, P; Lehner, S; Liberadzka, J; Malbrunot, C; Mariazzi, S; Marx, L; Matveev, V; Mazzotta, Z; Nebbia, G; Nedelec, P; Oberthaler, M; Pacifico, Nicola; Pagano, D; Penasa, L; Petracek, V; Pistillo, C; Prelz, F; Prevedelli, M; Ravelli, L; Rienäcker, B; Røhne, Ole Myren; Rosenberger, S; Rotondi, A; Sacerdoti, M; Sandaker, Heidi; Santoro, R; Scampoli, P; Sorrentino, F; Spacek, M; Storey, J; Strojek, IM; Testera, G; Tietje, I; Vamosi, S; Widmann, E; Yzombard, P; Zavatarelli, S; Zmeskal, J (Peer reviewed; Journal article, 2015-11)
      We describe a system designed to re-bunch positron pulses delivered by an accumulator supplied by a positron source and a Surko-trap. Positron pulses from the accumulator are magnetically guided in a 0.085 T field and are ...

    • Possibilities, limitations, and the way ahead for dust explosion modelling 

      Skjold, Trygve; Larsen, Ø.; Hansen, Olav R. (Journal article; Peer reviewed, 2006)
      The purpose of the present paper is threefold. First, a brief review of modelling, main results, and preliminary conclusions from the DESC project are presented; current capabilities and limitations of the DESC code are ...

    • Possibility of Measuring the CP of a Higgs Boson at the LHC 

      Myklevoll, Kari Ertresvåg (Master thesis, 2002)