Browsing Fysisk institutt by Title
Now showing items 1293-1312 of 3682
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(Master thesis / Masteroppgave, 2020)Naturfaglig kompetanse er viktig for både enkeltindivider og for det norske samfunnet, og engasjement og motivasjon er viktig for å styrke elevers naturfagskompetanse. I et stadig mer digitalisert samfunn er det derfor ...
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(Doctoral thesis / Doktoravhandling, 2021)Metal oxide semiconductors are widely recognized as prime materials for future energy technology along the low-carbon development path. Zinc oxide and gallium oxide, studied in the present thesis, promise highly efficient ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)Context. The ESA Rosetta probe has not seen direct evidence of a fully formed bow shock at comet 67P/Churyumov–Gerasimenko (67P). Ion spectrometer measurements of cometary pickup ions measured in the vicinity of the nucleus ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)With rapidly advancing multi-electrode recording technology, the local field potential (LFP) has again become a popular measure of neuronal activity in both research and clinical applications. Proper understanding of the ...
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(Master thesis / Masteroppgave, 2016)
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)HYDJET++ model combines the description of soft processes with the treatment of hard partons propagating medium. The model is employed for the analysis of PbPb collisions at LHC energies, particularly, the azimuthal ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)A supersaturated fluid flowing over a reactive, rough surface leads to complex precipitation patterns. We study the growth and interaction between discrete precipitates along a reactive wall in a nonlaminar channel flow. ...
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(Doctoral thesis / Doktoravhandling, 2008)The dynamics of various fundamental defects in electron-irradiated high-purity silicon detectors (diodes) were investigated by deep-level transient spectroscopy (DLTS). Samples with various oxygen concentrations were used ...
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Hydrogen storage in a mixed system of lithium and sodium amide : A DFT modeling studyRestricted Access (Master thesis / Masteroppgave, 2009)Summary In the development of non-emissive hydrogen cars, an efficient and safe hydrogen storage method is needed. One possibility is reversible storage of hydrogen in solid materials. Throughout the last decade, intense ...
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(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)Elasto-plastic fracture toughness tests of a commercially pure iron were performed in air and in hydrogen gas at two different pressures. Some unique characteristics of hydrogen-enhanced cracking were exhibited at both the ...
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(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2018)Hydrogen effect on fatigue performance of commercially pure BCC iron has been studied with a combination of various electron microscopy techniques. The fatigue crack growth (FCG) in gaseous hydrogen was found to consist ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)The role of hydrogen on intergranular (IG) fracture in hydrogen-assisted fatigue crack growth (HAFCG) of a pure iron at low stress intensity was discussed in terms of the microscopic deformation structures near crack ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)Hydrogen effect on fatigue performance at relatively high values of stress intensity factor range, ΔK, of pure BCC iron has been studied with a combination of various electron microscopy techniques. Hydrogen-assisted fatigue ...
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(Master thesis / Masteroppgave, 2010)Hydrogen is an important impurity in ZnO, and it is believed to act as a shallow donor and to passivate acceptors in the material. H is readily associated with other defects in ZnO, forming complexes with characteristic ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)Hydrogen (H) is thought to be strongly involved in the light and elevated temperature-induced degradation observed predominantly in p-type silicon wafers, but the nature of the defect or defects involved in this process ...
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(Master thesis / Masteroppgave, 2015)Dette arbeidet har undersøkt to materialer, zeolitten SSZ-13 og det zeotype materialet SAPO-34, begge med CHA-topologi. Materialene ble syntetisert ut i fra tidligere utarbeidete prosedyrer før de ble hydrotermisk behandlet. ...
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(Master thesis / Masteroppgave, 2008)In this thesis we have annealed hydrothermally (HT) grown ZnO samples at temperatures ranging from 600C to 1600C, and examined the effects on the lithium content, the resistivity and the surface topography. Starting with ...
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(Master thesis / Hovedoppgave, 2003)Irradiating T-47D cells with doses below 1 Gy revealed that cells of this line express hyper-radiosensitivity (HRS). In the present study HRS has been investigated when a challenge dose was given 6 or 24 hours after a ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)By means of a particle model that includes interactions only via the local particle concentration, we show that hyperballistic diffusion may result. This is done by finding the exact solution of the corresponding non-linear ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)