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Density-Based Formulation of Multi-Level Hartree-Fock Theory
(Master thesis, 2016)A scheme for multi-level (embedded) Hartree-Fock theory is developed. The goal is to reduce computational costs by treating different parts of an electronic system with different degrees of accuracy. In this thesis, a ... -
Deposition Patterns of PAHs, PCBs, and Selected Elements in Snow on Glaciers - Covering a Latitudinal Gradient from Southern Norway (60.54°N) to Svalbard (78.87°N)
(Master thesis, 2022)Svalbard is a remote Arctic Archipelago, often considered to have a pristine environment. However, volatile and persistent compounds have been suggested to be transported from lower latitudes to the Arctic via long-range ... -
Describing ground and excited state potential energy surfaces for molecular photoswitches using coupled cluster models
(Peer reviewed; Journal article, 2021)n this article, we use two extensively studied systems, a retinal model system and azobenzene, to explore the use of coupled cluster models for describing ground and singlet excited state potential energy surfaces of ... -
Design of an interface to Thermodynamic Equations
(Master thesis, 2012)The basis for this task is the RGrad framework developed as part of the Doctoral Thesis of Bjørn Tore Løvfall and the continued development by his supervisor Tore Haug-Warberg. This work focuses on the Application Programming ... -
Design of multi-luminescent silica-based nanoparticles for the detection of liquid organic compounds
(Journal article; Peer reviewed, 2024)Tracer testing in reservoir formations is utilised to determine residual oil saturation as part of optimum hydrocarbon production. Here, we present a novel detection method of liquid organic compounds by monodisperse SiO2 ... -
Designing High-Refractive Index Polymers Using Materials Informatics
(Journal article; Peer reviewed, 2018)A machine learning strategy is presented for the rapid discovery of new polymeric materials satisfying multiple desirable properties. Of particular interest is the design of high refractive index polymers. Our in silico ... -
Detection of environmental nanoplastics via surface-enhanced Raman spectroscopy using high-density, ring-shaped nanogap arrays
(Peer reviewed; Journal article, 2023)Micro- and nano-plastics (MNPs) are global contaminants of growing concern to the ecosystem and human health. In-the-field detection and identification of environmental micro- and nano-plastics (e-MNPs) is critical for ... -
Determination of C0‐C9 alkyl phenols in produced water‐exposed fish eggs using gas chromatography tandem mass spectrometry
(Peer reviewed; Journal article, 2020)Rationale Produced water (PW) discharge from the oil and gas industry represents the largest intentional marine waste volume. Alkyl phenols (APs) are one of the main toxic component groups found in PW, with concentration ... -
Determination of Fe(II) and Fe(III) in Synechococcus sp. PCC 7002 culture
(Master thesis, 2018)Results presented in this thesis show Fe(II) detection in culture with goethite in addition to an increase of dFe concentration in goethite culture which have implications for a biogenic reduction mechanism in Synechococcus ... -
Determination of nitrated and oxygenated polycyclic aromatic hydrocarbons in arctic air by GC/NICI-MS
(Master thesis, 2017)Nitrated and oxygenated polycyclic aromatic hydrocarbons (nitro- and oxy-PAHs) are pollutants that enter the atmosphere from incomplete combustions and from degradation of regular PAHs. Nowadays, there are growing interests ... -
Determination of Occurrence of Phthalate Metabolites in Harbour Porpoises from the Norwegian Coast
(Master thesis, 2019)Ftalater har mottatt betydelig oppmerksomhet grunnet høyt potensial for miljøforurensning og skadelige helseeffekter hos levende organismer. Forekomst av ftalatmetabolitter er godt etablert hos mennesker, men er i liten ... -
Determination of Poly Chlorinated biphenyls in sediment of Trondheim fjord (Norway) and Lake Tana (Ethiopia) using pressurized liquid extraction (PLE) and Gas Chromatography - Mass Spectrometry (GC-MS)
(Master thesis, 2017)The presence of polychlorinated biphenyls (PCBs) in the environment is of great concern, as they are compounds that are hazardous to the environment and human health. Environmental investigations of PCBs can be challenging ... -
The Determination of Polycyclic Aromatic Hydrocarbons (PAHs) with HPLC-DAD-FLD and GC-MS Techniques in the Dissolved and Particulate Phase of Road-Tunnel Wash Water: A Case Study for Cross-Array Comparisons and Applications
(Peer reviewed; Journal article, 2022)Accelerated solvent extraction (ASE) and solid phase extraction (SPE) protocols tailored to either gas chromatography mass spectrometry (GC-MS) or high-performance liquid chromatography coupled to diode-array and fluorescence ... -
Determination of profiles of occurrence of parabens, triclocarban and elements in select snack foodstuffs from Norway and other countries
(Master thesis, 2019)Processed food stuffs are added chemicals to keep stable quality for long periods. While the additives give positive effect to ordinary life, some of these also possibly cause estrogenic problem for our health. Therefore, ... -
Determination of profiles of trace elements and emerging contaminants (PFCs) in feathers and blood samples from birds - a multi-species approach
(Master thesis, 2019)Fjær- og blodprøver fra en rekke fuglearter ble samlet i Norge og Hellas (2015-2018) for å vurdere forekomst og se på profiler til utvalgte spormetaller og organiske forurensninger. De utvalgte essensielle sporstoffene ... -
Determination of steroid hormones in grey seal (Halichoerus grypus) blood plasma using convergence chromatography tandem mass spectrometry
(Peer reviewed; Journal article, 2023)A hybrid solid phase extraction (HybridSPE) protocol tailored to ultra-performance convergence chromatography tandem mass spectrometry (UPC2-MS/MS) was developed for the determination of 19 steroid hormones in grey seal ... -
Determination of the Oxidative Stress Biomarkers of 8-Hydroxydeoxyguanosine and Dityrosine in the Gills, Skin, Dorsal Fin, and Liver Tissue of Atlantic Salmon (Salmo salar) Parr
(Peer reviewed; Journal article, 2022)Oxidative stress is a condition caused by an imbalance in the occurrence of reactive oxygen species in the cells and tissues of organisms. An ultra-performance liquid chromatography–electrospray ionization tandem mass ... -
Developing synthesis route for CuSAPO-18
(Master thesis, 2019)I dette arbeidet ble synthese av SAPO-18 med kobber isomorfisk substituert forsøkt via en hydrotermisk metode. Metoder basert på di-isopropyletylamin (DIPEA) ble funnet til å redusere deler av eller alt kobberet til ... -
Development and electrochemical characterization of ultra-microsensors using nanotechnology
(Master thesis, 2009) -
Development and implementation of extended CC2 models
(Master thesis, 2013)This thesis is part of an ongoing research project into the development and implementation of multi-level coupled cluster (MLCC) theory. In MLCC, the orbital space is divided into two or more subspaces. Based on which ...