Browsing Department of Physics and Technology by Title
Now showing items 2059-2078 of 2104
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Variation in relative biological effectiveness for cognitive structures in proton therapy of pediatric brain tumors
(Journal article; Peer reviewed, 2021)Background Clinically, a constant value of 1.1 is used for the relative biological effectiveness (RBE) of protons, whereas in vitro the RBE has been shown to vary depending on physical dose, tissue type, and linear energy ... -
Variation of bending rigidity with material density: bilayer silica with nanoscale holes
(Journal article; Peer reviewed, 2022)Two dimensional (2D) materials are a young class of materials that is foreseen to play an important role as building blocks in a range of applications, e.g. flexible electronics. For such applications, mechanical properties ... -
Veksling mellom ulike fokus i et utvalg av læreres veiledning av elever under praktisk natufagsarbeid
(Master thesis, 2015-06-08)Dialogue and discourse in science classrooms have been well studied, and multiple articles have been written about both challenges and opportunities related to classroom dialogue between teacher and students. In my master's ... -
Velocity distributions in microskimmer supersonic expansion helium beams: High precision measurements and modeling
(Peer reviewed; Journal article, 2018)Supersonic molecular beams are used in many applications ranging from spectroscopy and matter wave optics to surface science. The experimental setup typically includes a conically shaped, collimating aperture, the skimmer. ... -
Vented gas and dust explosions - External explosions
(Master thesis, 2016-06-01)The use of explosion venting is a widely applied safety measure, mitigating the effects of an internal gas and dust explosion. Implementation of this safety measure does however not eliminate all risks and hazards associated ... -
Vented hydrogen deflagrations in weak enclosures: Experimental results and implications for industrial practice
(Peer reviewed; Journal article, 2019)It is common practice in industry to install equipment for hydrogen energy applications in containers and smaller enclosures. Fires and explosions represent a significant hazard for such installations (Skjold et al., 2018), ... -
Versatile compressive microscope for hyperspectral transmission and fluorescence lifetime imaging
(Journal article; Peer reviewed, 2022)Increasing demand for multimodal characterization and imaging of new materials entails the combination of various methods in a single microscopic setup. Hyperspectral imaging of transmission spectra or photoluminescence ... -
Videreutvikling av instrumentering - for studier av mikroalgers vertikalmigrasjon under ulike lysforhold
(Master thesis, 2017)Mikroalger er viktige som primærprodusent i økosystem, både som næring til andre organismer men også som oksygenprodusent. Endringer av miljøforhold som lysintensitet, bølgelengde og tilgang på næringsstoffer, vil påvirke ... -
Viking and early middle ages Northern Scandinavian textiles proven to be made with hemp
(Peer reviewed; Journal article, 2013-10-18)Nowadays most plant textiles used for clothing and household are made of cotton and viscose. Before the 19th century however, plant textiles were mainly made from locally available raw materials, in Scandinavia these were: ... -
Viscous potential flow analysis of peripheral heavy ion collisions
(Peer reviewed; Journal article, 2013-02-19)The conditions for the development of a Kelvin-Helmholtz instability (KHI) for the quark-gluon plasma (QGP) flow in a peripheral heavy ion collision is investigated. The projectile and target side particles are separated ... -
Visualization and interpretation of methane hydrate growth and dissociation in synthetic porous media
(Master thesis, 2015-12-22)Sedimentary natural gas hydrates might play an important role in the future energy mix and the impact of methane release from natural gas hydrates can be significant also with respect to climate change. Vast amounts of ... -
Visualization of Unsteady Flow in a Multistage Helico-Axial Pump
(Journal article, 2023)Helico-axial pumps are designed to pump mixtures of gas and liquid. Secondary flows and rotor-stator interactions are known to add complexity to the flow field in unshrouded axial-flow turbomachinery. Here we use a high-speed ... -
Vorticity in peripheral collisions at the Facility for Antiproton and Ion Research and at the JINR Nuclotron-based Ion Collider fAcility
(Peer reviewed; Journal article, 2014-08-29)The flow vorticity development is studied in the reaction plane of peripheral relativistic heavy-ion reactions at energies just above the threshold of the transition to a quark-gluon plasma (QGP). Earlier calculations at ... -
W and Z boson production in p–Pb collisions at \(\sqrt{s_{\rm NN}}=5.02\) TeV
(Peer reviewed; Journal article, 2017-02)The W and Z boson production was measured via the muonic decay channel in proton-lead collisions at \(\sqrt{s_{\rm NN}}=5.02\) TeV at the Large Hadron Collider with the ALICE detector. The measurement covers backward ... -
A water droplet-powered sensor based on charge transfer to a flow-through front surface electrode
(Journal article; Peer reviewed, 2020)A water droplet sensor based on a flow-through front surface electrode is demonstrated. It is shown that a triboelectric nanogenerator based on a metal-dielectric junction can be utilized to construct simple, self-powered ... -
Water shutoff and conformance improvement: an introduction
(Journal article; Peer reviewed, 2021)This paper provides an introduction to the topic of water shutoff and conformance improvement. After indicating the volumes of water produced during oilfield operations, a strategy is provided for attacking excess water ... -
Waterflood Efficiency and Single-Phase Flow Properties of Carbonate Porous Media
(Doctoral thesis, 2009-12-17) -
Weinberg’s 3HDM potential with spontaneous CP violation
(Journal article; Peer reviewed, 2023)We study the potential of Weinberg’s Z2×Z2-symmetric three-Higgs-doublet model. The potential is designed to accommodate CP violation in the scalar sector within a gauge theory, while at the same time allowing for natural ... -
Wettability effects on oil recovery mechanisms in fractured chalk
(Doctoral thesis, 2007-02-02)This thesis is a part of the ongoing project, “Oil recovery from fractured chalk reservoirs”, which is a collaboration between the Reservoir Physics Group at the University of Bergen and ConocoPhillips Research Center in ... -
Wetting of porous thin films exhibiting large contact angles
(Journal article; Peer reviewed, 2023)Porous solid films that promote large apparent contact angles are interesting systems since their wetting properties are dependent on both the surface structure and water penetration into the film. In this study, a ...