Blar i Department of Physics and Technology på tittel

Viser treff 2137-2156 av 2283

    • The application of CW and FM sonar technology to detect a decrease in air in the swim bladder of Atlantic salmon, measurements and modeling 

      Rong, Maren Forstrønen (Master thesis, 2022-06-01)
      Salmon lice and poor surface conditions are challenging for salmon aquaculture. A new innovative preventative solution is to submerge the cages below the sea surface to avoid the surface-dwelling infestation of lice larvae. ...

    • The impact of medium energy electrons on mesospheric chemistry and dynamics 

      Zúñiga López, Héctor Daniel (Master thesis, 2021-10-28)

    • The Neutral Helium Microscope 

      Sørhaug, Kristian Andre Bunes (Master thesis, 2022-06-01)

    • The role of Resistivity on the efficiency of Magnetic Reconnection in MHD 

      Pérez-Coll Jiménez, Judit (Master thesis, 2021-06-01)
      Magnetic reconnection is a fundamental plasma process, which can explosively convert magnetic energy to particle energy. When reconnection operates, it releases almost all of the energy stored in the magnetic field and ...

    • Theoretical analysis of erosion in elbows due to flows with nano- and micro-size particles 

      Kosinska, Anna Dorota; Balakin, Boris; Kosinski, Pawel Jan (Journal article; Peer reviewed, 2020-02-05)
      The present paper focuses on the issue of erosion due to fluid flow laden with nano- and microparticles. We investigated the case of a pipe elbow using theoretical analysis and numerical simulations. For the case when the ...

    • Theoretical studies of CO2 hydrates formation and dissociation in cold aquifers using RetrasoCodeBright simulator 

      Jemai, Khaled; Kvamme, Bjørn; Vafaei, Mohammad Taghi (Peer reviewed; Journal article, 2014)
      Abstract: - Hydrates of CO2 and water can form during aquifer storage if the reservoir has regions where conditions of pressure and temperature are inside the hydrate forming conditions. A very common assumption is that ...

    • Theoretical studies of Methane Hydrate Dissociation in porous media using RetrasoCodeBright simulator 

      Chejara, Ashok; Kvamme, Bjørn; Vafaei, Mohammad Taghi; Jemai, Khaled (Peer reviewed; Journal article, 2012)
      Methane hydrates in reservoir are generally not in chemical equilibrium, there may be several competing hydrate phase transitions like for instance hydrate dissociation due to pressure or temperature changes, hydrate ...

    • Thermal Neutron Detection Efficiency of a Gadolinium-Based Silicon Pixel Sensor 

      Setterdahl, Lena Marie (Master thesis, 2020-12-18)
      This thesis is a "proof-of-principle" study which aims to assess the feasibility of ALPIDE as a neutron imaging sensor when coupled with a natural-Gd converter foil. The neutron detection efficiency of a Gd-based ALPIDE ...

    • Thermally excited 630.0 nm emissions in the polar ionosphere 

      Kwagala, Norah Kaggwa (Doctoral thesis, 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 ...

    • Thermodynamic and Kinetic Modeling of CH4/CO2 Hydrates Phase transitions 

      Kvamme, B.; Baig, K.; Qasim, M.; Bauman, J. (Peer reviewed; Journal article, 2013)
      Natural gas hydrates in reservoirs are thermodynamically unstable due to exposure to mineral surfaces and possibly undersaturated phases of water and hydrate formers. Changes in global temperatures also alter the stability ...

    • Thermomagnetic convection in a differentially heated flow loop 

      Stava, Mattias (Master thesis, 2020-07-03)

    • Three principal components describe the spatiotemporal development of mesoscale ionospheric equivalent currents around substorm onsets 

      Juusola, Liisa; Viljanen, Ari; Partamies, Noora; Vanhamäki, Heikki; Kellinsalmi, Mirjam; Walker, Simon (Journal article; Peer reviewed, 2023)
      Substorms are a commonly occurring but insufficiently understood form of dynamics in the coupled magnetosphere–ionosphere system, associated with space weather disturbances and auroras. We have used principal component ...

    • Three-Dimensional Magnetic Reconnection With a Spatially Confined X-Line Extent: Implications for Dipolarizing Flux Bundles and the Dawn-Dusk Asymmetry 

      Liu, Yi-Hsin; Li, TC; Hesse, Michael; Sun, WJ; Liu, J; Burch, J; Slavin, James Arthur; Huang, K. (Peer reviewed; Journal article, 2019)
      Using 3‐D particle‐in‐cell simulations, we study magnetic reconnection with the X‐line being spatially confined in the current direction. We include thick current layers to prevent reconnection at two ends of a thin current ...

    • Tilstandsovervåkning av undervanns motordrift med lange forsyningskabler 

      Stjernberg, Stian (Master thesis, 2010-06-01)
      Hensikten med denne mastergradsoppgaven er å sette opp et testanlegg bestående av forsyningskabel og induksjonsmotor for å teste om tilstandsovervåkning kan utføres ved strømanalyse av lange forsyningskabler. Det skal ...

    • Time domain simulations of preliminary breakdown pulses in natural lightning 

      Carlson, Brant Edward; Liang, Can; Bitzer, Phillip M.; Christian, Hugh J. (Peer reviewed; Journal article, 2015-06)
      Lightning discharge is a complicated process with relevant physical scales spanning many orders of magnitude. In an effort to understand the electrodynamics of lightning and connect physical properties of the channel to ...

    • Time evolution of storms producing terrestrial gamma-ray flashes using era5 reanalysis data, gps, lightning and geo-stationary satellite observations 

      Tiberia, Alessandra; Mascitelli, Alessandra; D’adderio, Leo Pio; Federico, Stefano; Marisaldi, Martino; Porcù, Federico; Realini, Eugenio; Gatti, Andrea; Ursi, Alessandro; Fuschino, Fabio; Tavani, Marco; Dietrich, Stefano (Journal article; Peer reviewed, 2021)
      In this article, we report the first investigation over time of the atmospheric conditions around terrestrial gamma-ray flash (TGF) occurrences, using GPS sensors in combination with geostationary satellite observations ...

    • Time sequence of TGFs and optical pulses detected by ASIM and a comparison of TGFs observed by different spacecrafts 

      Bjørge-Engeland, Ingrid (Master thesis, 2020-06-30)
      Terrestrial gamma-ray flashes (TGFs) are short energetic bursts of photons associated with lightning activity. TGFs are believed to be produced in relation to positive intracloud (IC+) lightning, during the upward propagation ...

    • Time-dependent angular analysis of the decay B0s→J/ψϕ and extraction of ΔΓ s and the CP-violating weak phase ϕ s by ATLAS 

      ATLAS, Collaboration; Aad, Georges; Abajyan, T.; Abbott, Brad; Abdallah, Jalal; Abdel Khalek, Samah; Abdelalim, A. A.; Buanes, Trygve; Burgess, Thomas; Eigen, Gerald; Kastanas, Alex; Liebig, Wolfgang; Lipniacka, Anna; Rosendahl, Peter Lundgaard; Sandaker, Heidi; Sjursen, Therese B.; Stugu, Bjarne; Tonoyan, Arshak; Ugland, Maren (Peer reviewed; Journal article, 2012-12)
      A measurement of B0s→J/ψϕ decay parameters, including the CP -violating weak phase ϕ s and the decay width difference ΔΓ s is reported, using 4.9 fb−1 of integrated luminosity collected in 2011 by the ATLAS detector from ...

    • To Measure the Efficiency of Energy Transfer Systems Under External 

      Joshi, Pramanand (Master thesis, 2014-06-03)
      Transfer of power wirelessly through magnetic resonance is a hot topic these days not only for low power consumer electronics like laptops, cell phones etc. but also for high power applications like electric cars, trains ...

    • Top-quark physics at the CLIC electron-positron linear collider 

      Abramowicz, Halina; Alipour Tehrani, N; Arominski, D; Benhammou, Y; Benoit, M; Blaising, JJ; Boronat, M; Borysov, O; Bosley, RR; Božović Jelisavčić, I; Boyko, I; Brass, S; Brondolin, E; Bruckman de Renstrom, P; Buckland, M; Burrows, PN; Chefdeville, M; Chekanov, S; Coates, T; Dannheim, D; Demarteau, M; Denizli, H; Durieux, G; Eigen, Gerald; Elsener, K; Fullana, E; Fuster, J; Gabriel, M; Gaede, F; Garcia, I; Goldstein, J; Gomis Lopez, P; Graf, C; Green, S; Grefe, C; Grojean, C; Hoang, A; Hynds, D; Joffe, A; Kalinowski, J; Kacarevic, G; Kilian, W; van der Kolk, N; Krawczyk, M; Kucharczyk, M; Leogrande, E; Lesiak, T; Levy, A; Levy, I; Linssen, L; Maier, AA; Makarenko, V; Marshall, JS; Martin, V; Mateu, V; Matsedonskyi, O; Metcalfe, J; Milutinović Dumbelović, G; Munker, RM; Nefedov, Yu; Nowak, K; Nürnberg, A; Pandurović, M; Perelló, M; Perez Codina, E; Petric, M; Pitters, F; Price, T; Quast, T; Redford, S; Repond, J; Robson, A; Roloff, P; Ros, E; Rozwadowska, K; Ruiz-Jimeno, A; Sailer, A; Salvatore, F; Schnoor, U; Schulte, D; Senol, A; Shelkov, G; Sicking, E; Simon, F; Simoniello, R; Sopicki, P; Spannagel, S; Stapnes, Steinar; Ström, R; Szalay, M; Thomson, MA; Turbiarz, B; Viazlo, O; Vicente, M; Vila, I; Vos, M; Vossebeld, J; Watson, MF; Watson, NK; Weber, MA; Weerts, H; Wells, JD; Widl, A; Williams, M; Winter, AG; Wojtoń, T; Wulzer, A; Xu, B; Xia, L; You, T; Żarnecki, AF; Zawiejski, L; Zhang, C; Zhang, J; Zhang, Y; Zhang, Z; Zhemchugov, A (Journal article; Peer reviewed, 2019)
      The Compact Linear Collider (CLIC) is a proposed future high-luminosity linear electron-positron collider operating at three energy stages, with nominal centre-of-mass energies s√ = 380 GeV, 1.5 TeV, and 3 TeV. Its aim is ...