Browsing Fakultet for naturvitenskap (NV) by Title
Now showing items 61-80 of 12453
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A comparison of atomized purified condensed smoke and traditionally wooden smoke in processing of cold smoked salmon (Salmo salar), in relation to quality, yield and food safety
(Master thesis, 2020)Forbrukerkrav presser matindustrien til å produsere sunnere og mindre konserverte produkter, noe som også er tilfelle for kaldrøkt laks (CSS). For CSS innebærer dette redusering av saltinnhold, men endring i røyketeknologi ... -
A Comparison of Biological Dose Estimates in Proton and Carbon Ion Therapy Based on Averaged and Full Linear Energy Transfer Spectra
(Master thesis, 2015)Radiotherapy with ions, also known as particle therapy, is increasing rapidly. Shifting from photons to protons and carbons is not only a great technological transition, but also a shift in physics and in radiobiology. ... -
A comparison of Gravity Wave Parameters derived from the Analysis of a Three-Field Photometer with Imagers
(Master thesis, 2015)A method for preprocessing and analysing a few select fields in airglow intensity images from an all-sky imager was developed and utilized. Waves detected with a three-field analysis were compared with those waves ... -
A comparison of life history and biological characters between Atlantic salmon first-time and repeat spawners in two Norwegian rivers
(Master thesis, 2023)Iteroparitet er en avveiningsstrategi mellom nåværende og fremtidig reproduksjon. Risikoen for svikt i reproduksjonen er spredt over tid dersom fisken kan overleve sin første gyting og gyte igjen på et senere tidspunkt. ... -
A comparison of machine learning algorithms to investigate methylation profiles and predict type 1 diabetes
(Master thesis, 2021)Forekomsten og utbredelsen av type 1 diabetes i verden har økt de siste fire tiårene. Rakyan et al. hadde en hypotese om at noen av de ikke-genetiske faktorene skyldtes epigenetisk variasjon. Målet med denne masteroppgaven ... -
A comparison of two parallel solution schemes for the advection-diffusion equation - Velocity guided random walk of paticles vs finite volume discretization on Cartesian grid
(Master thesis, 2017)In this thesis two methods for solving the diffusion-advection equation was implemented using MPI. The two methods was a velocity guided random walk of particles and solving the advection-diffusion equation on a grid. Both ... -
A Complex Interaction between Rickettsia conorii and Dickkopf-1 - Potential Role in Immune Evasion Mechanisms in Endothelial Cells
(Journal article; Peer reviewed, 2012)The pathophysiological hallmark of spotted fever group rickettsioses comprises vascular inflammation. Based on the emerging importance of the wingless (Wnt) pathways in inflammation and vascular biology, we hypothesized ... -
A composite network of conserved and tissue specific gene interactions reveals possible genetic interactions in glioma
(Journal article; Peer reviewed, 2017)Differential co-expression network analyses have recently become an important step in the investigation of cellular differentiation and dysfunctional gene-regulation in cell and tissue disease-states. The resulting networks ... -
A comprehensive evaluation of predictive performance of 33 species distribution models at species and community levels
(Journal article; Peer reviewed, 2019)A large array of species distribution model (SDM) approaches has been developed for explaining and predicting the occurrences of individual species or species assemblages. Given the wealth of existing models, it is unclear ... -
A comprehensive experimental study of five fundamental phenothiazine geometries increasing the diversity of the phenothiazine dye class for dye-sensitized solar cells
(Journal article; Peer reviewed, 2019)Phenothiazine is a versatile scaffold frequently used in both pharmaceutical and photovoltaic applications. Still, the structural diversity within the class of phenothiazine sensitizers for dye-sensitized solar cells is ... -
A comprehensive kinetics study on non-isothermal pyrolysis of kerogen from Green River oil shale
(Journal article; Peer reviewed, 2018)Fundamentally understanding the pyrolysis kinetics of kerogen is of prime scientific and industrial importance. Herein, bitumen- and carbonates-free kerogen sample is prepared through Soxhlet extraction followed by ... -
A comprehensive mitogenome phylogeny of the avian tribe Arini (Arinae: Psittacidae) with emphasis in Pyrrhura species
(Master thesis, 2021)The tribe Arini is the most diverse group of Neotropical parrots, and it includes approximately 158 species distributed in at least 32 genera. These parrots have been largely affected by habitat loss, fragmentation, and ... -
A comprehensive study on improved power materials for high-temperature thermoelectric generators
(Journal article; Peer reviewed, 2019)Dense Ca3Co4O9-NaxCoO2-Bi2Ca2Co2O9 (CCO-NCO-BCCO) nanocomposites were produced from sol-gel derived Ca2.25Na0.3Bi0.35Tb0.1Co4O9 powder by four methods: Hot-pressing (HP), spark plasma sintering (SPS) and pressureless ... -
A computational study of a ionic liquid and its ability to dissolve cellulose
(Master thesis, 2022)Oppløsningsmekanismen til en cellulosebunt solvatisert i blandinger av vann, Na+ og OH ble analysert gjennom molekylær dynamikksimulering og sammenlignet med den første i sitt slag simulerte ionisk væske som løsningsmiddel. ... -
A computational study of recrystallisation and grain growth using a 3D Potts Monte Carlo model
(Doktoravhandlinger ved NTNU, 1503-8181; 2009:34, Doctoral thesis, 2009)The ever increasing capability of computer systems and the advances in theoretical understanding of the underlying physics and chemistry of materials have, over the last couple of decades, provided the basis for mathematical ... -
A concept for electrowinning of aluminium using depolarized gas anodes
(Journal article; Peer reviewed, 2014)Aluminium is today commercially produced by the Hall-Héroult process using consumable carbon anodes. Consumable anodes have some concerns such as CO2 emission, continuous anodecathode distance adjustments and replacements ... -
A consistent reduction of the two-layer shallow-water equations to an accurate one-layer spreading model
(Journal article; Peer reviewed, 2019)The gravity-driven spreading of one fluid in contact with another fluid is of key importance to a range of topics. These phenomena are commonly described by the two-layer shallow-water equations (SWE). When one layer is ... -
A Control- and Estimation-Oriented Gravity Separator Model for Oil and Gas Applications Based upon First-Principles
(Journal article; Peer reviewed, 2018)We introduce a simple model for a gravity separator based on first principles. It can be used for controller design to control the levels of oil, water, and the gas pressure as well as observer design to estimate unmeasurable ... -
A correlative spatiotemporal microscale study of calcium phosphate formation and transformation within an alginate hydrogel matrix.
(Journal article; Peer reviewed, 2016)The modification of soft hydrogels with hard inorganic components is a method used to form composite materials with application in non-load-bearing bone tissue engineering. The inclusion of an inorganic component may provide ... -
A CRISPR/Cas13-based method for downregulation of ALB3 genes in Phaeodactylum tricornutum
(Master thesis, 2021)Diatoms, a group of unicellular photosynthetic microalgae, are of high ecological importance. They are responsible for about 20% of the world’s oxygen production. They have also been exploited in research due to their high ...