Browsing Department of Chemistry by Title
Now showing items 217-236 of 337
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Online monitoring of an organic synthesis reaction using Raman and NIR spectroscopy
(Master thesis, 2011)The synthesis of 10-Bromo-1-Decandiol was monitored using Raman and near infrared spectroscopy. Optical fiber Raman and near infrared probes were immersed in the reaction mixture. Raman spectra were recorded every 50 second ... -
Oppgaver i kjemilærebøker i perioden 1900-2015
(Master thesis, 2015-06-01)I masteroppgaven Oppgaver i kjemilærebøker og deres betydning i undervisningen (Bodal, 2013) ble oppgaver i tre av de mest benyttede kjemilærebøkene for videregående skole i Norge i dag analysert. Analysen viste at ... -
Optical Properties of Metal Nanoparticle Arrays Created using Electron Beam Lithography for Solar Cell Application
(Master thesis, 2014-06-02)Metal nanoparticles (MNPs) are of key interest in many research fields due to their unique optical properties, which are largely dominated by the localized surface plasmon resonance (LSPR) effect. The LSPR effect gives ... -
Optical properties of metal nanoparticles investigated using polarised light.
(Master thesis, 2017-06-10)The number of applications of metal nanoparticles (MNPs) are growing, and one of their most interesting properties is the interactions between MNPs and light. Especially in the visible regime, MNPs are very good at absorbing ... -
Optimization of Analytical Method for Selenium Speciation in Fish Feed and Feed Ingredients Using a Chemometric Approach
(Master thesis, 2021-03-15)Selenium (Se) is an essential element for humans, as well as for fish, including Atlantic salmon (Salmo salar). One of the main sources of Se and other elements for farmed salmon is the diet. Due to the replacement of ... -
Optimization of Separation Efficiency in Temperature Programmed Gas Chromatography : Application of Response Surface Methodology
(Master thesis, 2014-03-14)Chromatographic efficiency can be defined as the maximal number of chromatographic peaks that can be separated within a section of a chromatogram. In isothermal gas chromatography (GC) it is usually measured by number of ... -
Origin and character of gaseous hydrocarbons in the hydrate and non-hydrate charged sediments on the Norway - Svalbard margins
(Doctoral thesis, 2011-05-26)Gas incubated in clathrate water-structures, stabilizes the hydrogen bonded substance termed gas hydrate. In the marine environment vast amount of carbon is stored as gas hydrates within the temperature and pressure zone ... -
Osmotic engine converting energy from salinity difference to a hydraulic accumulator by utilizing polyelectrolyte hydrogels
(Journal article; Peer reviewed, 2021)Efficient harvesting of the mixing energy from the salinity gradient between sea and river water remains a challenge. Recently, utilization of the swelling/shrinking properties of hydrogels has been explored as a new means ... -
Partial molar properties of aqueous monosaccharide solutions at elevated pressure
(Master thesis, 2001) -
Partielle molare eigenskapar og løysingsevne til kalsiumfosfat ved høgtrykk studert ved hjelp av volum og kompresjon av natriumfosfat og kalsiumkolrid
(Master thesis, 2003)Det har vorte utført tettleiksmålingar og lydfartsmålingar på vassløysningar av natriumdihydrogenfosfat, dinatriumhydrogenfosfat, trinatriumfosfat og kalsiumklorid. Målingane har vorte gjort for ulike konsentrasjonar i ... -
Peptidomimetic inhibitors targeting the membrane-binding site of the neutrophil proteinase 3
(Peer reviewed; Journal article, 2019)Proteinase 3 (PR3), together with other serine proteases, such as neutrophil elastase (NE) and cathepsin G (CG), regulates inflammatory and immune responses. However, in comparison with NE and CG, there is increasing ... -
Phenylethylene glycol-derived LpxC inhibitors with diverse Zn2+-binding groups
(Peer reviewed; Journal article, 2019)The Zn2+-dependent bacterial deacetylase LpxC is a promising target for the development of novel antibiotics. Most of the known LpxC inhibitors carry a hydroxamate moiety as Zn2+-binding group. However, hydroxamic acids ... -
Phosphine- and Indenylidene-Based Z-Selective Ruthenium Olefin Metathesis Catalysts and Catalyst Stability: Decomposition, Olefin Isomerization and Regeneration
(Doctoral thesis, 2019-11-22)This thesis describes the development and synthesis of phosphine-bearing first-generation Z-selective olefin metathesis catalysts that give 70–95% of the Z-isomer product in homocoupling of terminal alkenes such as ... -
Phosphine-Based Z‑Selective Ruthenium Olefin Metathesis Catalysts
(Peer reviewed; Journal article, 2016-05-18)Whereas a number of highly Z-selective ruthenium-based olefin metathesis catalysts bearing N-heterocyclic carbene ligands have been reported in recent years, Zselectivity has so far been difficult to achieve for phosphinebased ... -
Photocapacitor systems for generation and storage of electrical energy
(Master thesis, 2015-06-01)In this project, the combining of photovoltaic cells and supercapacitors into a single, photocapacitor system, was studied. A complete photocapacitor system of commercial components was put together, and characterized. The ... -
Photocatalytic TiO2/rGO/CuO Composite for Wastewater Treatment of Cr(VI) Under Visible Light
(Journal article; Peer reviewed, 2020)The harm of chromium pollution to the environment has caused a widespread concern; hexavalent chromium is a toxic, cancerogenic, and genetically mutagenic contaminant to the human body; by contrast, trivalent chromium is ... -
Photodegradable antimicrobial agents - synthesis, photodegradation, and biological evaluation
(Journal article; Peer reviewed, 2021)Multi-drug resistant (MDR) bacteria are already a significant health-care problem and are making the combat of infections quite challenging. Here we report the synthesis of several new compounds containing an ethanolamine ... -
Photodegradable Antimicrobial Agents: Synthesis and Mechanism of Degradation
(Journal article; Peer reviewed, 2022)As a strategy to inactivate antimicrobial agents after use, we designed a range of ethanolamine derivatives where four of them possessed interesting activity. The ethanolamine moiety facilitates photodecomposition, which ... -
Physical Chemistry of Mechanisms for Low Salinity Waterflood
(Master thesis, 2013-10-23)Low salinity injection as an alternative EOR method to enhance the production of reserves has for decades been investigated. Increasing evidence that reduction in brine salinity can cause a significant impact on the oil ... -
Physico-Chemistry Characterization of Sulfonated Polyacrylamide Polymers for Use in Polymer Flooding
(Doctoral thesis, 2010-06-01)Hydrolyzed polyacrylamide polymer (HPAM) as a feasible and effective viscosifier has been fully studied and used for polymer flooding processes in several oil field, e.g. Daqing oil field. It has been shown that Hydrolyzed ...