Blar i Department of Chemistry på tittel
Viser treff 132-151 av 432
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Effects of Strain and Kinetics on the H2O2‑Assisted Reconstruction of Ag−Au−Ag Nanorods
(Journal article; Peer reviewed, 2020)Morphology of Ag nanocrystals (NCs) is essential to the NC application in catalysis, optics, and as antibacterial agents. Therefore, it is important to develop synthetic methods and understand the evaluation of NC morphology ... -
Effekten av ulike ekstraksjonsmetoder for syreforbindelser i råolje med hensyn på syresammensetning og fysikalske egenskaper
(Master thesis, 2008-06-02)Råolje er en kompleks blanding som består av et mangfold av komponenter og forbindelser. Det er vanskelig å identifisere enkeltforbindelser i en råolje, og for å bedre kunne studere de ulike forbindelsestypene blir oljen ... -
The efficiency of maltodextrin and porous silicon nanoparticles for the in vitro and in vivo stabilization of tyrosine hydroxylase
(Master thesis, 2016-06-01)Parkinson's disease is a severe neurodegenerative disease, which causes deterioration of the dopaminergic neurons of the substantia nigra. Lack of dopamine causes motor function problems and cognitive decline. Due to ... -
Electronic properties of chlorine, methyl, and chloromethyl as substituents to the ethylene group-viewed from the core of carbon
(Peer reviewed; Journal article, 2015-08-17)“Substituent effects” is an important and useful concept in organic chemistry. Although there are many approaches to parametrizing the electronic and steric effects of substituents, the physical basis for the parameters ... -
Emulsion and Surface-Active Properties of Fish Solubles Based on Direct Extraction and after Hydrolysis of Atlantic Cod and Atlantic Salmon Backbones
(Journal article; Peer reviewed, 2021)The focus on natural foods and “clean” labeled products is increasing and encourages development of new biobased ingredients. Fish solubles derived from downstream processing of side stream materials in the fish filleting ... -
Enabling Molecular-Level Computational Description of Redox and Proton-Coupled Electron Transfer Reactions of Samarium Diiodide
(Journal article; Peer reviewed, 2023)Samarium diiodide (SmI2, Kagan’s reagent) is a one-electron reductant with applications ranging from organic synthesis to nitrogen fixation. Highly inaccurate relative energies of redox and proton-coupled electron transfer ... -
Energetic and Exergetic Performances of a Retrofitted, Large-Scale, Biomass-Fired CHP Coupled to a Steam-Explosion Biomass Upgrading Plant, a Biorefinery Process and a High-Temperature Heat Network
(Journal article; Peer reviewed, 2021)This paper aims at assessing the impact of retrofitting an existing, 730 MWe, coal-fired power plant into a biomass-fired combined heat and power (CHP) plant on its energetic and exergetic performances. A comprehensive ... -
Energy Lost in a Hydrogel Osmotic Engine Due to a Pressure Drop
(Journal article; Peer reviewed, 2021)Utilizing hydrogels to harvest salinity gradient energy from solutions of different salinities has recently attracted interest. Polyelectrolyte hydrogels exhibit cyclic swelling/deswelling when alternately exposed to ... -
Enhanced Oil Recovery by Combined Low Salinity Water and Polymer Flooding
(Doctoral thesis, 2014-06-19)World energy demand is continuously increasing as the developed and developing countries consume more energy to keep their growing industries running. Significant portion of the energy demand is supplied by fossil energies, ... -
Environmental Remediation: Removal of polycyclic aromatic hydrocarbons Dissertation
(Doctoral thesis, 2012-08-17)Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous persistent semi-volatile organic compounds. They are contaminants that are resistant to degradation and can remain in the environment for long periods due to their ... -
An environmentally benign and high-rate Appel type reaction
(Journal article; Peer reviewed, 2022)A high rate, selective, and productive Appel type reaction was developed. The method allows for ipso-substitution of the alcoholic hydroxy group with halogens ∈ [Cl, Br, I]. The method demands mild reaction conditions that ... -
Environmentally Friendly Synthesis of Biobased Plastic from Lignin Derived Building Blocks to Replace Poly(ethylene Terephthalate) (PET)
(Master thesis, 2017-12-20)The resources of petroleum are decreasing, and new ways have to be found of producing all the energy and chemicals that today are based on petroleum. An alternative to petroleum is renewable biomass, where lignocellulosic ... -
Enzymes for Enhanced Oil Recovery (EOR)
(Doctoral thesis, 2011-06-30)Primary oil recovery by reservoir pressure depletion and secondary oil recovery by waterflooding usually result in poor displacement efficiency. As a consequence there is always some trapped oil remaining in oil reservoirs. ... -
«Er det nokon som har tolka dette annleis?» - Ein kvalitativ studie av samtalar mellom lærar og elevar under felles tilarbeiding av fagstoff
(Master thesis, 2021-06-15)Formålet med denne masteroppgåva har vore å få eit innsyn i kva som kjenneteikner samtalar mellom lærarar og elevar i klasserommet. Datamaterialet som utgjer grunnlaget for analysen er samla inn frå tre undervisningstimar ... -
Ethylene-Triggered Formation of Ruthenium Alkylidene from Decomposed Catalyst
(Journal article; Peer reviewed, 2020)Ethylene is known to readily decompose ruthenium-based olefin metathesis catalysts, such as Grubbs second-generation catalyst (GII), by forming the unsubstituted ruthenacyclobutane (Ru-2) that may undergo a 1,2-H shift and ... -
Experimental Studies of N2 - and CO2-Foam Properties in Relation to Enhanced Oil Recovery Applications
(Doctoral thesis, 2015-06-01)Foams can do more than soften a beard or extinguish a fire. Foam also offers the oil industry better mobility control. The presence of a foaming agent in porous rocks can reduce the mobility of gas and water, stabilize the ... -
An experimental study of mixed CO2-CH4 hydrate phase equilibria and the CO2-CH4 exchange reaction
(Master thesis, 2015-06-01)Large amounts of CH4 are trapped in naturally occurring gas hydrate deposits. Extensive research on these species has generated a considerable interest in developing technologically and economically viable recovery methods ... -
Exploration of non-spinning ^1H NMR Spectroscopy as a Tool for Determination and Monitoring of Gas Hydrate Formation and Dissociation Processes
(Master thesis, 2015-11-02)Natural gas hydrates provide both a flow- assurance hazard and a potential fossil fuel source. In order to face the challenges presented by these scenarios, a greater understanding of the properties of hydrates in a range ... -
Exploratory multivariate analysis of the effect of fatty fish consumption and medicinal use on heart rate and heart rate variability data
(Peer reviewed; Journal article, 2015-02-17)The overall aim of the present study was to explore the relationship between medicinal use and fatty fish consumption on heart rate variability (HRV) and heart rate (HR) in a group of forensic inpatients on a variety of ... -
Exploring chemistry teachers' perspectives on questioning and providing a new way of analyzing teacher questions in science classrooms
(Doctoral thesis, 2018-02-12)The goals of this dissertation were, to examine how chemistry teachers conceptualize the nature of questions used in teaching, as well as how their understanding influences their questioning practice, and to explore a new ...