Browsing Department of Mathematics and Natural Sciences by Title
Now showing items 259-278 of 312
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Study Of The 1D Three Phase Liquid, Gas And Cutting Model For Vertical Well Flow
(Masteroppgave/UIS-TN-IMN/2015;, Master thesis, 2015-06)This is a Master's thesis in Physics, elaborated at the University of Stavanger in the 2014 Fall and 2015 Spring semesters, as partial accomplishment of the duties due in the Master Course in Mathematics and Physics. The ... -
A study of the interaction between a kinetic hydrate inhibitor and selected corrosion inhibitors
(Masteroppgave/UIS-TN-IMN/2011;, Master thesis, 2011)In field operations where natural gas hydrates can occur and CO2 corrosion is a problem, chemicals called inhibitors can be employed. Kinetic hydrate inhibitors (KHIs) and corrosion inhibitors (CIs) are added in small ... -
Study of the Process, Design and Operating Parameters Effect on the Efficiency of the Process Mill
(Master thesis, 2014-10-08)The study is dedicated to a computational model for the process mill using finite element software precisely COMSOL Multiphysics 4.4. A finite element model of the process mill was constructed using dimensions similar to ... -
Study of treated and untreated oil based drilling waste using a biomarker approach: gill and liver histopathology in Atlantic salmon (Salmo salar).
(Masteroppgave/UIS-TN-IMN/2014;, Master thesis, 2014-07-14)In order to safely dispose and use treated drill cuttings waste oil based mud, it is important to obtain knowledge about the contamination levels for possible adverse effects in freshwater organisms. Selected biomarkers ... -
Study of treated and untreated oil-based drilling waste exposure in Atlantic salmon (Salmo salar) using a biomarker approach: EROD and oxidative stress parameters
(Masteroppgave/UIS-TN-IMN/2014;, Master thesis, 2014-07-11)This thesis presents an in vitro study evaluating if detoxification and oxidative stress enzymes ethoxyresorufin-O-dethylase (EROD), glutathione S-transferase (GST) and catalase (CAT) can reflect the effect thermally treated ... -
Study of treated and untreated oil-based drilling waste exposure in Atlantic salmon (Salmo salar) using a biomarker approach: EROD and oxidative stress parameters
(Masteroppgave/UIS-TN-IMN/2014;, Master thesis, 2014-07-11)This thesis presents an in vitro study evaluating if detoxification and oxidative stress enzymes ethoxyresorufin-O-dethylase (EROD), glutathione S-transferase (GST) and catalase (CAT) can reflect the effect thermally treated ... -
Submaximal conformal symmetry superalgebras for Lorentzian manifolds of low dimension
(Journal article; Peer reviewed, 2016-02)We consider a class of smooth oriented Lorentzian manifolds in dimensions three and four which admit a nowhere vanishing conformal Killing vector and a closed two-form that is invariant under the Lie algebra of conformal ... -
Superheated steam distillation for treatment of drill cuttings contaminated with oil based drilling fluids
(Masteroppgave/UIS-TN-IMN/2014;, Master thesis, 2014-06-27)Offshore drilling activities for the oil and gas industry produce massive quantities of waste material including drill cuttings contaminated with oil based drilling fluids/muds. In offshore Norway and other Oslo Paris ... -
Synthesis of biodiesel from triglyceride oil
(Masteroppgave/UIS-TN-IMN/2011;, Master thesis, 2011)This research work has dealt with kinetics of biodiesel production (Fatty Acid Methyl Ester “FAME”) from triglyceride oils through transesterification. This project is divided into two parts: literature study and a small ... -
Synthesis of new kinetic gas hydrate inhibitors : lactams as nucleophiles
(Masteroppgave/UIS-TN-IMN/2012;, Master thesis, 2012)Lactam-based surfactants have been synthesized using amines with different chain lengths. Most reactions were also carried out with lactams of different ring sizes: 5, 6 and 7-member ring (pyrrolidone, piperidone and ... -
Synthesis of PAH-metabolites to be used in Environmental Research
(PhD thesis UiS;191, Doctoral thesis, 2013-04-19)As environmental pollutants, polycyclic aromatic hydrocarbons (PAHs) are well known to form metabolites which can react with DNA and proteins to cause mutagenesis and create cancer. For chrysene the metabolite ... -
Synthesis of tubastrine analogues as potential antifouling agents
(Masteroppgave/UIS-TN-IMN/2017;, Master thesis, 2017-07-12)In recent years, several isolated natural products containing a guanidine group have proven to have antibacterial effects. Preparation of such molecules synthetically is therefore highly relevant for mitigation and control ... -
Synthesizing and Testing for New Biodegradable Scale Inhibitors
(Masteroppgave/UIS-TN-IMN/2017;, Master thesis, 2017-06)A common production problem for oilfield operation is the formation of inorganic scale in the wellbore, surface facilities and near wellbore formation. Scale formation causes loss in production in most of the production ... -
Targeted mutagenesis of peroxisomal protein phosphatases using CRISPR-Cas9 approach
(Masteroppgave/UIS-TN-IMN/2017;, Master thesis, 2017-06)The newest development in the techniques of gene editing is the clustered regularly interspaced short palindromic repeat - associated protein9 (CRISPR-Cas9). This is a complex consisting of single-guide RNA (sgRNA) and a ... -
Temperature dependence of naphthalene biodegradation in seawater (0.5-15ºC)
(Masteroppgave/UIS-TN-IMN/2009, Master thesis, 2009)The polar areas are very vulnerable to exposure to contaminants. An oil spill in polar areas could be a disaster to large areas. The recovery from contamination takes longer time in arctic areas than in more temperate areas ... -
Texture and sensory properties of modified fish products for dysphagia patients
(Masteroppgave/UIS-TN-IMN/2018;, Master thesis, 2018-12)The Statistics Norway (SSB) population projection indicates that the people aged 70 years and above will double in three decades, from nearly 600,000 today to around 1.2 million. During ageing, many elderly people undergo ... -
Texture measurements of protein enriched foods for elderly.
(Masteroppgave/UIS-TN-IMN/2017;, Master thesis, 2017-06-15)Elderly people require nutritious food with a high protein content in their diet, and at the same time the food should be attractive and easy to swallow. A good diet not only helps in protecting the health but it also ... -
The challenge of preparing plasma free tyrosine and 3-nitrotyrosine for GC/MS analysis
(Masteroppgave/UIS-TN-IMN/2015;, Master thesis, 2015-06-12)3-Nitrotyrosine and the 3-nitrotyrosine/tyrosine ratio has been acknowledged as a biomarker of nitro-oxidative stress and its elevated level in biological fluids is associated with a wide range of clinical conditions. ... -
The chemo-mechanical effects of carbonated water at realistic reservoir conditions
(Masteroppgave/UIS-TN-IMN/2014;, Master thesis, 2014-03-19)The possibility of CO2 capture coupled with sequestration in deep geological formation has emerged in attempt to reduce the significant increase of CO2 (g) in the atmosphere. The impact of CO2 on the reservoir integrity ... -
The development of a method for solubilisation of dark etioplast and the regulation of Chlorophyll binding to the Cytochrome b6f complex during deetiolation.
(Masteroppgave/UIS-TN-IMN/2017;, Master thesis, 2017-06)During photosynthesis light energy in used to make ATP, during this process cytochrome b6f acts as a link between photosystem I and II. Cytochrome b6f received electrons from photosystem II and passes them to photosystem ...