Now showing items 465-484 of 1453

    • Identification of boosted Higgs bosons decaying into b-quark pairs with the ATLAS detector at 13 TeV 

      Aad, Georges; Abbott, Brad; Abbott, Dale C.; Abdinov, Ovsat Bahram oglu; Abed Abud, Adam; Abeling, Kira; Abhayasinghe, Deshan Kavishka; Abidi, Syed Haider; AbouZeid, Hass; Abraham, Nadine L.; Bjørke, Kristian; Bugge, Magnar Kopangen; Cameron, David Gordon; Catmore, James Richard; Feigl, Simon; Garonne, Vincent; Gramstad, Eirik; Hellesund, Simen; Morisbak, Vanja; Oppen, Henrik; Ould-Saada, Farid; Pedersen, Maiken; Read, Alexander Lincoln; Røhne, Ole Myren; Sandaker, Heidi; Vadla, Knut Oddvar Høie; Buanes, Trygve; Djuvsland, Julia Isabell; Eigen, Gerald; Fomin, Nikolai; Lee, Graham Richard; Lipniacka, Anna; Martin dit Latour, Bertrand; Mæland, Steffen; Stugu, Bjarne; Træet, Are Sivertsen; Abramowicz, Halina; Abreu, Henso; Abulaiti, Yiming; Acharya, Bobby S.; Achkar, Baida; Adachi, Shunsuke; Adam, Lennart; Adam-Bourdarios, Claire; Adamczyk, Leszek; Adamek, Lukas; Adelman, Jareed; Adersberger, Michael; Adigüzel, Aytül; Adorni, Sofia; ATLAS, Collaboration (Peer reviewed; Journal article, 2019)
      This paper describes a study of techniques for identifying Higgs bosons at high transverse momenta decaying into bottom-quark pairs, H→bb¯, for proton–proton collision data collected by the ATLAS detector at the Large ...
    • Identifikasjon av undervannsobjekter ved bruk av ultralyd 

      Spjeld, Cato (Master thesis, 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 ...
    • Image formation in the scanning helium microscope 

      Fahy, Adam; Eder, Sabrina Daniela; Barr, Matt; Martens, Joel; Myles, T.A.; Dastoor, Paul C. (Peer reviewed; Journal article, 2018)
      The scanning helium microscope (SHeM) is a new addition to the array of available microscopies, particularly for delicate materials that may suffer damage under techniques utilising light or charged particles. As with all ...
    • Image quality of list-mode proton imaging without front trackers 

      Sølie, Jarle Rambo; Volz, Lennart; Pettersen, Helge Egil Seime; Piersimoni, Pierluigi; Odland, Odd Harald; Røhrich, Dieter; Helstrup, Håvard; Peitzmann, Thomas; Ullaland, Kjetil; Varga-Kofarago, Monika; Mehendale, Shruti Vineet; Grøttvik, Ola Slettevoll; Eikeland, Viljar Nilsen; Meric, Ilker; Seco, Joao (Journal article; Peer reviewed, 2020)
      List mode proton imaging relies on accurate reconstruction of the proton most likely path (MLP) through the patient. This typically requires two sets of position sensitive detector systems, one upstream (front) and one ...
    • The impact of energetic electron precipitation on mesospheric hydroxyl during a year of solar minimum 

      Zawedde, Annet Eva; Tyssøy, Hilde Nesse; Hibbins, Robert Edward; Espy, Patrick Joseph; Degaard, L-K.; Sandanger, Marit Irene; Stadsnes, Johan (Peer reviewed; Journal article, 2016-06)
      In 2008 a sequence of geomagnetic storms occurred triggered by high-speed solar wind streams from coronal holes. Improved estimates of precipitating fluxes of energetic electrons are derived from measurements on board the ...
    • The Impact of Oxygen on the Reconnection Rate 

      Tenfjord, Paul; Hesse, Michael; Norgren, Astrid Elisabet Cecilia; Spinnangr, Susanne Flø; Kolstø, Håkon Midthun (Peer reviewed; Journal article, 2019-05-29)
      We investigate the role of a background oxygen population in magnetic reconnection, using particle‐in‐cell simulations. We run several simulations, with different initial oxygen temperatures and densities, to understand ...
    • Impact of solar irradiance and geomagnetic activity on polar NOx, ozone and temperature in WACCM simulations 

      Tartaglione, Nazario; Toniazzo, Thomas; Orsolini, Yvan J.; Otterå, Odd Helge (Journal article; Peer reviewed, 2020)
      The response of the atmosphere to solar irradiance and geomagnetic activity is analyzed in experiments with the Whole Atmosphere Community Climate Model (WACCM) under idealized forcings. Four experiments are carried out ...
    • The impact of sunlight on high-latitude equivalent currents 

      Laundal, Karl Magnus; Gjerløv, Jesper; Østgaard, Nikolai; Reistad, Jone Peter; Haaland, Stein; Snekvik, Kristian; Tenfjord, Paul; Ohtani, Shin-ichi; Milan, Steve (Peer reviewed; Journal article, 2016-03)
      Ground magnetic field measurements can be mathematically related to an overhead ionospheric equivalent current. In this study we look in detail at how the global equivalent current, calculated using more than 30 years of ...
    • Impact of variable proton relative biological effectiveness on estimates of secondary cancer risk in paediatric cancer patients 

      Grandemo, Vilde (Master thesis, 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 ...
    • Impacts of CO2 and H2S on the risk of hydrate formation during pipeline transport of natural gas 

      Aromada, Solomon Aforkoghene; Kvamme, Bjørn (Journal article; Peer reviewed, 2019)
      Evaluation of maximum content of water in natural gas before water condenses out at a given temperature and pressure is the initial step in hydrate risk analysis during pipeline transport of natural gas. The impacts of CO2 ...
    • Impacts on oil recovery from capillary pressure and capillary heterogeneities 

      Bognø, Thomas (Doctoral thesis, 2008-06-02)
      This thesis summarises the findings made in NFR-funded project “Capillary Pressure and Capillary Heterogeneities”. The focus has been to determine the impact on oil recovery from wettability and fractures in carbonate ...
    • Implementasjon av interrupt-styrd DMA-overføring på HLT-RORC 

      Torheim, Olav (Master thesis, 2005)
      På CERN i Geneve vert det bygd ein ny partikkelakselerator kalla LHC. Ein av dei fire hovuddetektorane i LHC vert kalla for ALICE. I ALICE-detektoren møtest akselererte blyion i høgenergetiske kollisjonar. Med desse ...
    • Implementation of Improved EDC Combustion Model in the Open LES Code FDS 

      Johansen, David René Ursin (Master thesis, 2012-08-09)
      In this thesis, Magnussen’s and Hjertager’s Eddy Dissipation Concept (EDC) Combustion Model has been implemented in the CFD code Fire Dynamics Simulator (FDS). FDS is an open source non-commercial Large Eddy Simulation ...
    • Improved bounds on W−W′ mixing with ATLAS resonant WZ production data at the LHC at √s=13  TeV 

      Serenkova, IA; Osland, Per; Pankov, Alexander A (Peer reviewed; Journal article, 2019)
      New charged vector bosons W ′ decaying into gauge boson pairs W Z are predicted in many scenarios of new physics, including models with an extended gauge sector (EGM). Due to the large variety of models (other unification ...
    • Improved constraints on the mixing and mass of Z ′ bosons from resonant diboson searches at the LHC at √ s = 13 TeV and predictions for Run II 

      Bobovnikov, ID; Osland, Per; Pankov, AA (Peer reviewed; Journal article, 2018)
      New neutral vector bosons Z ′ decaying to charged gauge boson pairs W + W − are predicted in many scenarios of new physics, including models with an extended gauge sector such as E 6 , left-right symmetric Z ′ LRS and the ...
    • In situ calibration of large-radius jet energy and mass in 13 TeV proton–proton collisions with the ATLAS detector 

      Aaboud, Morad; Aad, Georges; Abbott, Brad; Abdinov, Ovsat Bahram oglu; Abeloos, Baptiste; Abhayasinghe, Deshan Kavishka; Abidi, Syed Haider; AbouZeid, Hass; Abraham, Nadine L.; Abramowicz, Halina; Buanes, Trygve; Djuvsland, Julia Isabell; 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; Abreu, Henso; Abulaiti, Yiming; Acharya, Bobby S.; Adachi, Shunsuke; Adam, Lennart; Adamczyk, Leszek; Adelman, Jareed; Adersberger, Michael; Adigüzel, Aytül; Adye, Tim; Affolder, Anthony Allen; Afik, Yoav; ATLAS, Collaboration (Peer reviewed; Journal article, 2019-02-13)
      The response of the ATLAS detector to largeradius jets is measured in situ using 36.2 fb−1 of √s = 13 TeV proton–proton collisions provided by the LHC and recorded by the ATLAS experiment during 2015 and 2016. The jet ...
    • In situ fluid dynamics and CO2 injection in porous rocks 

      Brautaset, Amund (Doctoral thesis, 2009-12-18)
      Understanding multiphase fluid flow in porous rocks implies knowledge of fundamental properties such as wettability, relative permeability and capillary pressure. These parameters, as well as the extent of fractures and ...
    • In-flight calibration of NOAA POES proton detectors - Derivation of the MEPED correction factors 

      Sandanger, Marit Irene; Ødegaard, Linn-Kristine Glesnes; Tyssøy, Hilde Nesse; Stadsnes, Johan; Søraas, Finn; Oksavik, Kjellmar; Aarsnes, Kjell (Peer reviewed; Journal article, 2015-11-25)
      The MEPED instruments on board the NOAA POES and MetOp satellites have been continuously measuring energetic particles in the magnetosphere since 1978. However, degradation of the proton detectors over time leads to an ...
    • In-situ measurements of rare earth elements in deep sea sediments using nuclear methods 

      Obhođaš, Jasmina; Sudac, Davorin; Meric, Ilker; Pettersen, Helge Egil Seime; Uroić, Milivoj; Nađ, Karlo; Valković, Vlado (Peer reviewed; Journal article, 2018-03-21)
      The prospecting activities for finding new rare earth elements (REE) sources have increased greatly in recent years. One of the main discoveries was announced in 2011 by Japanese researchers who found large quantities of ...