Browsing Fakultet for naturvitenskap (NV) by Title
Now showing items 12161-12180 of 12449
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Vacancy and solute co-segregated η1 interface in over-aged Al-Zn-Mg alloys
(Journal article; Peer reviewed, 2021)We present a combined first-principles and scanning transmission electron microscopy (STEM) study of the η1/Al interfaces in an over-aged Al-Zn-Mg alloy. As one of the major η-MgZn2 precipitate types, η1 tends to form ... -
Vacuum and Gas Refining of Silicon for Solar Cell Applications
(Doctoral theses at NTNU;2021:244, Doctoral thesis, 2021)In this research, the vacuum and gas refining for P and B removal from Si to reach solar grade silicon (SoG – Si) are studied. The vacuum refining process is modeled by applying the Hertz – Knudsen – Langmuir evaporation ... -
Vacuum evaporation of pure metals
(Journal article; Peer reviewed, 2013)Theories on the evaporation of pure substances are reviewed and applied to study vacuum evaporation of pure metals. It is shown that there is good agreement between different theories for weak evaporation, whereas there ... -
Vacuum Polarization Instead of “Dark Matter” in a Galaxy
(Journal article; Peer reviewed, 2022)We considered a vacuum polarization inside a galaxy in the eikonal approximation and found that two possible types of polarization exist. The first type is described by the equation of state p=ρ/3, similar to radiation. ... -
Vacuum refining of silicon at ultra-high temperatures
(Peer reviewed; Journal article, 2020)In the production of solar grade silicon (SoG-Si), Phosphorus (P) removal from Si is a challenge as it cannot be eliminated effectively by the final key directional solidification step in the value chain of the silicon ... -
Vacuum ultraviolet optical properties of GaSb determined by synchrotron rotating analyzer ellipsometry: applications in nanopillars and plasmonics
(Peer reviewed; Journal article, 2023)The vacuum ultraviolet (VUV) optical properties in the range 4 eV to 15 eV of GaSb have been determined by rotating analyzer ellipsometry (RAE) using synchrotron light. The localized surface plasmon resonances (LSPRs) and ... -
Vaksineteknologi
(Bachelor thesis, 2021)En vaksine et preparat som brukes for å stimulere en immunrespons slik at den som vaksineres blir immun uten selv å behøve og gå gjennom sykdommen. Vaksiner deles inn i ulike kategorier, som forteller noe om hvilken teknologi ... -
Vakuumfrysetørking av mysekonsentrat
(Bachelor thesis, 2019)Hovedmålet for denne bacheloroppgaven var å sammenligne frysetørket og spraytørket WPC80 for å se om de ulike tørkemetodene ga produkter med ulike egenskaper. I tillegg ble det forsøkt å produsere WPC80 av myse i liten ... -
Valence excitation energies in multilevel coupled cluster
(Master thesis, 2017)This is a benchmark study, for valence excitation energies in the multilevel coupled cluster (MLCC) framework. The information resulting from lower level of theory is used to generate correlated natural transition orbitals ... -
Valence states in sub-monolayer samarium films on graphene supported on ruthenium and nickel
(Master thesis, 2023)Denne oppgaven undersøker overflateegenskapene til enkeltsubstrater av overgangsmetall Ru(001) og Ni(111) mettet med grafendopet Samarium(Sm) monolag av sjeldne jordarter. Fire komplementære overflatevitenskapsteknikker ... -
Validating reproducible methods for the analysis of microplastics in environmental samples
(Master thesis, 2022)Harmoniserte eller sammenlignbare metoder for kvantifisering av mikroplast er avgjørende for å kartlegge, karakterisere og øke nøyaktigheten av å beskrive omfanget og endringene over tid av mikroplastforurensning. Slike ... -
Validating the algorithms AAA and Acuros for calculation of dose from flattening filter free beams in heterogenous tissue - Application to stereotactic radiotherapy of lung tumors
(Master thesis, 2015)In radiation therapy of cancer, modeling the dose to the patient is very important. Several computational algorithms are available, where some model dose in heterogeneous tissue better than others. After implementation of ... -
Validating the laminar population analysis for decomposing cortical multielectrode data on a model of the mouse primary visual cortex
(Master thesis, 2019)Teknologisk innovasjon har ført til en stor økning i mengden nevrale data som kan innhentes på en gang, noe som har avlet et behov for nye metoder for å analysere disse store, multidimensjonale datasettene. Laminære ... -
Validation and comparison of irradiation models for bifacial solar systems in the Nordics
(Master thesis, 2022)Abstract will be available on 2024-06-08 -
Validation of an Agilent GC-MS System With a Polyarc-FID
(Bachelor thesis, 2021)Validering av en Agilent 8890 gasskromatograf (GC) med massespektrometer (MS), en polyarc-reaktor og flammeionisasjonsdetektor (FID) ble utført for oppdragsgiver, for å forsøke å oppnå en akkreditert metode for ... -
Validation of middle-atmospheric campaign-based water vapour measured by the ground-based microwave radiometer MIAWARA-C
(Journal article; Peer reviewed, 2013)Abstract. Middle atmospheric water vapour can be used as a tracer for dynamical processes. It is mainly measured by satellite instruments and ground-based microwave radiometers. Ground-based instruments capable of measuring ... -
Validation of SSUSI-derived auroral electron densities: comparisons to EISCAT data
(Peer reviewed; Journal article, 2021)The coupling of the atmosphere to the space environment has become recognized as an important driver of atmospheric chemistry and dynamics. In order to quantify the effects of particle precipitation on the atmosphere, ... -
Validering av analysemetode for amfetaminer, ecstasy-stoffer og ritalinsyre i humant serum med bruk av pipetteringsrobot og UHPLC-MS/MS
(Master thesis, 2018)Sentralstimulerende midler brukes både som illegale rusmidler og til medisinsk bruk. Konsentrasjonsbestemmelse i serum utføres for å avdekke misbruk eller som kontroll i for- bindelse med terapeutisk legemiddelmonitorering. ... -
Validering av APTT i Sysmex CS-5100
(Bachelor thesis, 2021)Denne oppgaven tar for seg problemstillingen: Validering av aktivert partiell tromboplastintid (APTT) analysert i to Sysmex CS-5100 instrumenter. Oppgaven ble gitt av Avdeling for medisinsk biokjemi ved St. Olavs hospital. ... -
Validering av en UPLC-MSMS metode for kvantifisering av klozapin, kvetiapin, mirtazapin og deres metabolitter i fullblod.
(Bachelor thesis, 2023)Validering av metode for kvantifisering av antipsykotika (klozapin og kvetiapin) og antidepressiva (mirtazapin) og deres metabolitter (DM-klozapin, DA-kvetiapin, DM-mirtazapin) i fullblod med bruk av serummatriks som ...