Browsing Department of Chemistry by Title
Now showing items 64-83 of 542
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Caesium-137 in sediments from two Norwegian fjords- Including dating sediment cores
(Master thesis, 2010-05-31)Summary The fission product Cs-137 is present in all parts of the Norwegian environment, brought here atmospherically or by ocean currents. The most important sources are fallout from atmospheric nuclear weapons tests, ... -
A calcium zirconate based combined material for calcium-copper chemical looping technology
(Journal article; Peer reviewed, 2020)Combined calcium-copper materials based on calcium zirconate (CaO/CuO/CaZrO3) for Calcium-Copper Chemical Looping (Ca-Cu Looping) have been synthesized using a scalable wet chemical method and characterized by powder X-ray ... -
Calibration of oxygen 1s ionization energies. Accurate energies for CO2, H2O, CO, and O2
(Journal article; Peer reviewed, 2021)Access to accurate reference data is a prerequisite in order to translate chemical shifts to an absolute scale for inner-shell ionization energies. Calibration standards for oxygen 1s (O 1s) ionization energies are less ... -
Cardiometabolic associations between physical activity, adiposity, and lipoprotein subclasses in prepubertal norwegian children
(Journal article; Peer reviewed, 2021)Lipoprotein subclasses possess crucial cardiometabolic information. Due to strong multicollinearity among variables, little is known about the strength of influence of physical activity (PA) and adiposity upon this ... -
Carotenoid content in algal epiphytes: A qualitative and quantitative DAD-HPLC analytical study
(Master thesis, 2023-06-01)A qualitative and quantitative study were performed on carotenoid content in algal epiphytes growing on the surface of Laminaria hyperborea. A stability study was also conducted to look at carotenoid degradation under ... -
Catalytic oxidation and reduction of polycyclic aromatic hydrocarbons (PAHs) present as mixtures in hydrothermal media
(Peer reviewed; Journal article, 2012)The reactivity of fluorene, anthracene and fluoranthene under oxidation and reduction conditions has been investigated in this study. This project looks at catalytic and green approaches of converting PAH to less toxic ... -
Cellulose‑g‑tetraethylenepentamine dual‑function imprinted polymers selectively and efectively adsorb and remove 4‑nitrophenol and Cr(VI)
(Journal article; Peer reviewed, 2022)A cellulosic material has been synthesized that could efficiently and selectively adsorb organic and inorganic contaminants from aqueous solutions without interference from competing adsorption sites. Cellulose-graft-tet ... -
Challenging Metathesis Catalysts with Nucleophiles and Brønsted Base: Examining the Stability of State-of-the-Art Ruthenium Carbene Catalysts to Attack by Amines
(Journal article; Peer reviewed, 2020)Critical to advancing the uptake of olefin metathesis in leadingcontexts, including pharmaceutical manufacturing, is identification of highlyactive catalysts that resist decomposition. Amines constitute an aggressivechallenge ... -
Changes in serum fatty acid and lipoprotein subclass concentrations from prepuberty to adulthood and during aging
(Peer reviewed; Journal article, 2016-03)Concentrations in serum were determined for 18 fatty acids (FAs) and 21 lipoprotein main and subclasses by chromatographic analyses and the average size was calculated for very low density (VLDL), low density (LDL) and ... -
Changes in Serum Fatty Acid Levels During the First Year After Bariatric Surgery
(Peer reviewed; Journal article, 2016-08)Background: We have assessed the effects of laparoscopic sleeve gastrectomy (LSG) and biliopancratic diversion with a duodenal switch (BPDDS) on fatty acid (FA) levels in serum. In particular, we examine the impact of ... -
Changes in the composition of aromatherapeutic citrus oils during evaporation
(Peer reviewed; Journal article, 2015)The composition of some commercial Citrus oils, lemon, sweet orange, and tangerine, designated for aromatherapy, was examined before and after partial evaporation in a stream of nitrogen. The intact oils contained the ... -
Characterization and optimization study of Poly(N-isopropylacrylamide) (P(NIPAM)) and β-cyclodextrin (βCD) system for Controlled Release Drug Delivery Systems with NMR and MRI techniques
(Master thesis, 2022-08-10)This project is a direct continuation from my bachelor project that was based off Wisniewska,M (2017), where she investigated the changes in Poly(N-isopropylacrylamide) P(NIPAM) at the Volume Phase Transition (VPT) . The ... -
Characterization of a Natural, Stable, Reversible and Colourful Anthocyanidin Network from Sphagnum Moss Based Mainly on the Yellow Trans‐Chalcone and Red Flavylium Cation Forms
(Journal article; Peer reviewed, 2021)Anthocyanins with various functions in nature are one of the most important sources of colours in plants. They are based on anthocyanidins or 3-deoxyanthocyanidins having in common a C15-skeleton and are unique in terms ... -
Characterization of bioactive natural products from edible, medicinal and toxic plants
(Doctoral thesis, 2017-12-15)Research performed during work on this thesis has focused on isolation, structure elucidation and biological activity of natural products. Seven plant species have been examined, namely Bromelia laciniosa Mart. ex Schult ... -
Characterization of complex solutions using relaxation- and diffusion weighted NMR Spectroscopy.
(Master thesis, 2017-08-02)The need for a sustainable replacement to the conventional fossil fuels is required. Biooils is a potential replacement. The biooil analyzed in this thesis is made from lignin, which is a by-product of paper production. ... -
Characterization of high value products in the side-stream of Laminaria hyperborea alginate production - Targeting the phenolic content
(Journal article; Peer reviewed, 2023)Sustainable production based on renewable biomass and efficient bioprocesses are important elements in the growing blue bioeconomy. The traditional Laminaria hyperborea alginate production disposes approximately 80 % of ... -
Characterization of Linked Polymer Solutions (LPS) – Influence of salinity and divalent ions
(Master thesis, 2011-05-31)Water flooding with addition of polymers cross-linked by polyvalent ions (LPS) has proven to increase the oil recovery both in field applications and laboratory studies, but with constraints on the brine salinity. With of ... -
Characterization of Polyphenolic Content in the Aquatic Plants Ruppia cirrhosa and Ruppia maritima —A Source of Nutritional Natural Products
(Peer reviewed; Journal article, 2018)Herein, the polyphenolic content in extracts of Ruppia cirrhosa (Petagna) Grande and Ruppia maritima L.was fully characterized for the first time. High amounts of the main compound chicoric acid (CA) (≤30.2 ± 4.3 mg/g) ... -
Characterizing mass transport in hydrogels using Nuclear Magnetic Resonance
(Doctoral thesis, 2019-11-08)During the past decades, drug delivery system has become an important research topic in the pharmaceutical field. Conventionally, the therapeutic concentration of a drug in the blood is achieved by repeated administration ... -
Characterizing Triacylglycerol in Cell Culture: Can LCMS replace HPTLC when assessing the effect of metformin in salmon in-vitro fatty liver model?
(Master thesis, 2017-10-25)Fatty liver, a health complication for aquacultured fish is developed by the deposition of triacylglycerol (TAG) within liver cells. Metformin has been proven to be an effective drug for ameliorating fatty liver in human ...