Browsing Department of Chemistry by Title
Now showing items 76-95 of 557
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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 ... -
Charge Transfer Quenching and Maximum of a Liquid-Air Contact Line Moving over a Hydrophobic Surface
(Journal article; Peer reviewed, 2024)Charge transfer when a hydrophobic fluoropolymer surface comes in contact with salt solutions of water, methanol, and glycerol is investigated. It is found that the charge transfer decreases faster with an increasing ... -
Chemical Insights from Carbon 1s Photoelectron Spectroscopy and Theoretical Modeling
(Doctoral thesis, 2007-08-31)Inner-shell ionization energies provide local probes of the charge distribution in molecules and of the ability of a molecule to accept charge at specific sites. As such, core-ionization energies are related to and may ... -
Chemical Properties of Alkenes and Alkynes from Carbon 1s Photoelectron Spectroscopy and Theory
(Doctoral thesis, 2013-02-27)The field of electron spectroscopy has evolved extensively the last couple of decades. On one hand, the technology at the synchrotron radiation facilities and of electron analyzers has improved, providing experimental data ... -
Chemical reactivity of methylbenzenes from core-photoelectron spectroscopy and theory
(Master thesis, 2000) -
Chemical studies of cytotoxic natural products from toxic and edible plant sources
(Doctoral thesis, 2024-04-19)Denne doktorgradsavhandlingen fokuserer på isolering og identifikasjon av naturstoffer fra fire utvalgte planter, hvor den cytotoksiske aktiviteten til nyoppdagede og interessante naturstoffer ble testet på blodkreftceller ... -
Chemometric Approaches for the Validation and Optimization of a LC-MS/MS Method for the Analysis of Phenanthrene Metabolites in Atlantic Haddock Embryo
(Master thesis, 2023-04-27)The release of oil and petroleum products into the environment has long been a cause for concern due to its toxic effects on marine species. In particular, the Atlantic haddock has shown enhanced sensitivity towards the ... -
Chlorine as a substituent – from quantum chemistry and photoelectron spectroscopy
(Doctoral thesis, 2015-02-17)The role of chlorine as a substituent upon ionization, protonation and electrophilic addition of HCl has been studied by means of computational chemistry and photoelectron spectroscopy. Gas-phase carbon 1s photoelectron ... -
Chromatographic Fingerprinting and Quality Control of Herbal Medicines: Comparison of two officinal Chinese pharmacopoeia species of Dendrobii based on High-Performance Liquid Chromatography and Chemometric analysis
(Master thesis, 2013-08-29)The fingerprinting quantitative analysis combining similarity evaluation, Principal Component Analysis (PCA) and Partial Least Squares Discriminant Analysis (PLS-DA) is a valid method for classification of herbal medicine ... -
Chromatographic Fingerprinting of Chinese Grape Berries
(Master thesis, 2014-04-14)Chromatographic fingerprints from three varieties of grapes produced in China (Giant Rose, Red Globe and Summer Black), were obtained by gas chromatography coupled with mass spectrometry. These grapes were subjected to ...