Blar i Department of Mathematics and Natural Sciences på tittel
Viser treff 61-80 av 312
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Determination of protein composition in whey fractions by molecular spectroscopy, gel electrophoresis and mass spectrometry
(Masteroppgave/UIS-TN-IMN/2015;, Master thesis, 2015-06-15)Whey is becoming an important product for the dairy industry. In the last 15 years, the characterization of whey proteins (β-lactoglobulin (β-Lg), α-lactalbumin (α-La), Bovine serum albumin (BSA), Immunoglobulin (Ig), ... -
Determination of the Effect of Constructed Wetlands on the Bioavailability of Phosphorus
(Masteroppgave/UIS-TN-IMN/2016;, Master thesis, 2016-06): Phosphorus is the limiting nutrient in most freshwater aquatic environments. When a large amount of phosphorus enters a freshwater environment, such as a lake, this causes a rapid increases in primary production which ... -
Development of Plant Hemoglobin-Based Blood Substitute: Fed-Batch Fermentation Optimization and Stability Characterization
(Masteroppgave/UIS-TN-IMN/2017;, Master thesis, 2017-07)The need for alternative blood substitutes is undoubtedly very enormous. Therefore, it is important to evaluate and develop different sources of starting material for this product. Focus has been on use of hemoglobin (Hb) ... -
Dimensional reduction of the Standard Model coupled to a new singlet scalar field
(Journal article; Peer reviewed, 2017)We derive an effective dimensionally reduced theory for the Standard Model augmented by a real singlet scalar. We treat the singlet as a superheavy field and integrate it out, leaving an effective theory involving only the ... -
Discriminating the Weyl type in higher dimensions using scalar curvature invariants
(Journal article; Peer reviewed, 2011)We consider higher dimensional Lorentzian spacetimes which are currently of interest in theoretical physics. It is possible to algebraically classify any tensor in a Lorentzian spacetime of arbitrary dimensions using ... -
DNA base excision repair : mutation induction and novel functions
(University of Stavanger, Norway;, Doctoral thesis, 2015-06)DNA is susceptible to chemical modifications corrupting its cellular information processing function, necessitating correction of such modifications. Cells are formed mostly by water – giving rise to hydrolytic reactions ... -
DNA glycosylase activities for N4,5-dimethylcytosine
(Master thesis, 2017-06)Although the epigenetic DNA base 5-methylcytosine (m5C) has an important role in cellular functions, damaging chemical alterations to m5C have been little studied. For example, while much knowledge exists on erroneous ... -
Downregulation of N-terminal acetylation triggers ABA-mediated drought responses in Arabidopsis
(Journal article; Peer reviewed, 2015-07)N-terminal acetylation (NTA) catalysed by N-terminal acetyltransferases (Nats) is among the most common protein modifications in eukaryotes, but its significance is still enigmatic. Here we characterize the plant NatA ... -
DREAM (Dose-related Risk and Exposure Assessment Model) as a tool to predict biomarker responses in offshore produced water discharge situations
(Masteroppgave/UIS-TN-IMN/2009, Master thesis, 2009-11-25)Every year, approximately 200 million tones of produced water are discharged into the sea by the Norwegian oil industry. Although rapidly diluted, due to its large amount and possible long term (chronic) effects, the ... -
Drift og optimalisering av flash separatoren i en glykol reclamation enhet
(Masteroppgave/UIS-TN-IMN/2009;, Master thesis, 2011)Monoetylenglykol (MEG) benyttes ofte som inhibitor for å unngå hydrater i subsea gasstransportrør. MEG er en miljøvennlig inhibitor, som kan resirkuleres om regenerering benyttes. Regenerering av MEG involverer to trinn; ... -
Effect of bacteriostatic agents on lactic acid bacteria and specific fish spoilage bacteria in a model system
(Masteroppgave/UIS-TN-IMN/2012;, Master thesis, 2012)Lactic acid bacteria (LAB) are gram positive bacteria, which are the dominant microflora in lightly preserved fish products (LPFP) and many LAB species can spoil LPFP. To increase the shelf-life of LPFP, it is necessary ... -
Effect of low temperature on hydrocarbon biodegradation in marine environments
(PhD thesis UiS;199, Doctoral thesis, 2013-06-20)Understanding the fate of oil discharges in cold marine environments has become a key issue as oil and gas industry is expandig exploration activities into frontier regions such as the Arctic Ocean. The aim of this research ... -
Effect of pre-exposure of sulfur and iron sulfide on H2S corrosion at different temperatures
(Masteroppgave/UIS-TN-IMN/2011;, Master thesis, 2011)The study has been carried out to investigate the effect of elemental sulfur and iron sulfide on corrosion behavior of carbon steel in sour environment. It was found that both compounds could form a protective layer of ... -
Effect of precorrosion by galvanostatic anodic polarization and temperature on the formation rate of iron (ii) carbonate film
(Masteroppgave/UIS-TN-IMN/2011;, Master thesis, 2011)Corrosion on the inside walls of steel pipelines and process equipment is mostly caused by CO2 which can cause property damage on the production and the transport of oil and natural gas. In order to control corrosion of ... -
Effect of rhizospheric and endophytic bacteria on root development of Arabidopsis thaliana and auxin mutants.
(Masteroppgave/UIS-TN-IMN/2017;, Master thesis, 2017-06-14)Plant root growth is one of the most important factor in determining the plant health and increased crop production. Factors like root length, root hairs and number of secondary roots are crucial for the intake and ... -
Effect of salinity on biological treatment of wastewater from oil industry
(Masteroppgave/UIS-TN-IMN/2009, Master thesis, 2009)High salinity may affect biological wastewater negative by reducing the growth rate of microorganisms. Wastewater from oil industry often contains high salinity which could be problematic to treat. This thesis is to evaluate ... -
Effect of temperature, bicarbonate, and MEG concentration on pre-corroded carbon steels
(Masteroppgave/UIS-TN-IMN/2011;, Master thesis, 2011)CO2 corrosion in carbon steel has been a major problem in many of oil and gas fields for years. One method that has been known to be effective for corrosion control especially in pipeline is pH stabilization. This method ... -
Effect of uvrC gene in mutation induction by 5-formyldeoxyuridine in Escherichia coli
(Masteroppgave/UIS-TN-IMN/2015;, Master thesis, 2015-06-30)The oxidation of the methyl group of thymine by reactive oxygen species forms the mutagenic base residue 5-formyluracil (fU). fU can be removed from DNA in vitro by AlkA (3-methyl DNA glycosylase II) and the Fpg, Nth and ... -
Effect on solids separation from wastewater with varying aeration and mixing conditions
(Masteroppgave/UIS-TN-IKBM/2018;, Master thesis, 2018-06-15)The main objective of this review was to analyze the effect on the separation of solids from wastewater with different conditions of aeration and mixing in order to compare their efficiency when both processes act ... -
Effect studies of different oil and dispersant exposures on keystone pelagic zooplankton species in arctic environments
(Masteroppgave/UIS-TN-IMN/2013;, Master thesis, 2013)Expanding petroleum activities into northern marine areas have resulted in need for tools that specify Arctic specific characteristics when assessing environmental risks for these regions. In order to estimate the environmental ...