Browsing Fysisk institutt by Title
Now showing items 800-819 of 3667
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)Effects of booms of a sounding rocket on rocket charging and on the local plasma conditions are studied with numerical and analytical models accounting for flowing, ionospheric plasmas. Simulations are carried out with a ...
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(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2018)Hydration of a nominally dry rock can cause expansion of the solid volume, resulting in reaction‐induced fracturing and an associated increase in the porosity and permeability of the rock. We study the effect of confinement ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2024)We investigate the effects of different guard geometries on the currents to needle-type Langmuir probes. The results are based on particle-in-cell numerical simulations. We show that if the guard length is less than 6–8 ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)Radiotherapy to the head and neck region negatively influences the osseointegration and survival of dental implants. The effects of cobalt 60 (60Co) ionizing radiation and the impact of backscatter rays were investigated ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)Boron (B) and phosphorus (P) are the most problematic impurities to be removed in the production of solar-grade silicon by the metallurgical process. In this work, the distribution of B and P between CaO-(La2O3)-SiO2 slags ...
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(Journal article / Tidsskriftartikkel / SubmittedVersion, 2017)We investigate the effects of magnetic impurities on the upper critical field (μ 0 H c2) in La-doped CaFe2As2 (LaCa122) single crystals. The magnetic field dependency of the superconducting transition temperature (T c) for ...
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(Doctoral thesis / Doktoravhandling, 2023)Perineuronal nets are protein structures that encapsulate certain neurons in the brain. They have been linked to memory retention and proposed to have a barrier function, as well as affecting properties of the neuronal ...
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(Journal article / Tidsskriftartikkel / SubmittedVersion, 2018)A systematic investigation is performed to determine the effects of the concentration of silver on metal assisted chemical etching (MaCE) for nanostructure formation mechanisms on silicon as well as their resultant optical ...
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(Master thesis / Masteroppgave, 2021)
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(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)The structural and optical properties of magnetron sputtered thin films of (ZnO)1−x(GaN)x deposited on zinc oxide, sapphire, and silicon oxide are studied as a function of strain accumulation and post‐deposition anneals ...
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(Master thesis / Masteroppgave, 2016)
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)n this work, we have investigated the effects of ytterbium (Yb) doping concentration on the structure and near band-edge (NBE) photoluminescence (PL) of ZnO thin films on Si after high temperature annealing. The films were ...
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(Master thesis / Masteroppgave, 2015)Brenselceller er en viktig del av en fremtidig energimodell. Protonledende keramer kan være effektive ved temperaturer mellom 400 og 700 oC. Et elektrolytisk materiale det forskes mye på er yttriumdopet bariumzirkonat, ...
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(Master thesis / Masteroppgave, 2011)Den etablerte oksygeneffekten dokumenterer at hypoksiske celler, med mindre enn normal tilgjengelighet av oksygen, er mindre strålefølsomme enn veloksygenerte celler. Det er imidlertid oppdaget en revers oksygeneffekt på ...
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(Master thesis / Masteroppgave, 2011)Humane cellers respons på stråling er avhengig av doseraten som strålingen leveres med. I denne oppgaven har en human cellelinje, T98G, blitt bestrålt med lave doserater for å finne effekten av strålingen ved bestrålingstider ...
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(Master thesis / Masteroppgave, 2008)Det har de siste årene blitt påvist stor strålefølsomhet i celler bestrålt med doser under 0.5 Gy i en rekke ulike celletyper. Dette fenomenet kalles hypersensitivitet (HRS). Effektbestrålinger utført i denne oppgaven med ...
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(Master thesis / Masteroppgave, 2016)Forskning fram til nå, viser at prebehandling av celler med TGF-β3 kan fjerne hypersensitivitet (HRS). Det er også noen indikasjoner på at dette cytokinet kan øke overlevelsesfraksjonen for celler bestrålt med testdoser ...
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(Master thesis / Masteroppgave, 2014)Denne oppgaven har gått ut på å lage katodemateriale for litiumionebatterier. Katodematerialene er basert på pulvermateriale laget ved Pechinimetoden. Materialene som er syntetisert er Li(Mn,Ni)2O4 og LiFe1-xMxPO4, X= 0,01 ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)Accelerating particles to high energies in plasma wakefields is considered to be a promising technique with good energy efficiency and high gradient. While important progress has been made in plasma-based electron acceleration, ...
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(Master thesis / Masteroppgave, 2019)An unmanned ground vehicle (UGV) that should operate autonomously on the road as well as in the terrain, is equipped with sensors that perceive the environment. The information from the sensors can be combined to create a ...