Now showing items 21-33 of 33

    • CO2 i sjø og på land. En lokal studie med fokus på fabrikkrøyk og miljø. 

      Øyen, Frode Jacobsen (Master thesis; Mastergradsoppgave, 2019-11-15)
      Netto utslipp av karbon til atmosfæren har økt siden starten på den industrielle revolusjon. Rundt halvparten av karbon som slippes ut blir tatt opp av havet fysisk via karbon fluks eller bundet opp i økosystemer i havet eller på land. Denne oppgaven tolker og diskuterer potensielle lokale virkninger av industriell CO2 utslipp ved å benytte fysiske og biologiske, oseanografi og CO2 data samlet ...
    • The Role of Silicate in the Parasitism of Pleurosigma sp. Diatoms by the Thraustochytrid Phycophthorum isakeiti 

      Powers, Daniel Jerome Finley (Master thesis; Mastergradsoppgave, 2020-05-15)
      The recently described thraustochytrid diatom parasite Phycophthorum isakeiti has been isolated from the marine system of northern Norway (Hassett, 2020). Protist P. isakeiti’s ecological role, biodiscovery potential, and interactions with a possible diatom host, Pleurosigma sp. remain largely unexplored. Here I present culturing experiments to test whether P. isakeiti is an obligate parasite. To ...
    • Manipulating the Epigenetic Machinery of Marine Fungi Through the Application of Epigenetic Modifiers to Induce the Biosynthesis of Novel Secondary Metabolites 

      Marø, Cathrine Eiken (Master thesis; Mastergradsoppgave, 2020-05-15)
      Fungi are among the most prolific producers of secondary metabolites, many of which have huge utility for society as various anti-infective and anticancer drugs. The genes encoding these secondary metabolites are arranged in continuous biosynthetic gene clusters (BGCs). Each fungus can have tens of different BGCs in its genome, possessing the ability to produce a multitude of secondary metabolites ...
    • Biodiscovery of Novel RNA Ligases with Biotechnological Potential - New Insights into the RNA Ligase 3 Family 

      Gábor, Hannah Ildikó Johnstad (Master thesis; Mastergradsoppgave, 2020-08-04)
      Polynucleotide ligases constitute a class of enzymes which catalyse the formation of phosphodiester bonds between proximal 5’-PO4 and 3’-OH groups in DNA, RNA and DNA/RNA-hybrid substrates. The reaction proceeds through three steps, where steps 1 and 2 prepare the substrate for ligation in step 3. The focus of this thesis is on ssRNA ligases of the RNA ligase (Rnl) 3 family. RNA ligases can repair ...
    • Enzymatic protein hydrolysis of residual raw material from Atlantic cod: Selectivity of proteases, outcome and bioactivities 

      Sorokina, Liudmila (Master thesis; Mastergradsoppgave, 2020-08-14)
      Global trends show that interest in fish products and fish consumption are increasing, while marine fishery resources are decreasing. Fish processing industry produces a high amount of residual raw materials that have nutritious proteins and other valuable compounds. An optimization of residual raw materials’ utilization can help meet the growing demand for fish products and help reduce environmental ...
    • A Comparison of Biochemical Composition and Bioactivity of Abalone (Haliotis spp) Subjected to Different Diets and Treatments 

      Opara, Uchenna Ben (Master thesis; Mastergradsoppgave, 2021-03-01)
      The fast growth of the aquaculture sector has led to an unsustainable harvest of wild fish species used in the production of aquaculture feed. Integrated Multi-trophic Aquaculture (IMTA) promises ecological and socio-economic advantages that include the provision of sustainable aquaculture feed. However, the promotion of IMTA requires that the stakeholders have sufficient quantitative information ...
    • Securidine analogues from the marine bryozoan Securiflustra securifrons. 

      Salamonsen, Daniel (Master thesis; Mastergradsoppgave, 2021-05-12)
      Har isolert analoger av Securidine A, samt andre forbindelser fra arten Securiflustra securifrons, utført strukturoppklaring og testet for bioaktivitet.
    • Bioactivity evaluation of underutilized marine raw materials for the management of metabolic syndrome 

      Rauø, Njål (Master thesis; Mastergradsoppgave, 2021-05-15)
      Metabolic syndrome (MetS) is the medical term for a cluster of risk factors including obesity, high blood pressure, and high blood sugar, which increases the risk of developing stroke, heart disease, and type 2 diabetes. Marine raw materials have been described to exert various bioactive properties beneficial to human health, including anti-inflammatory, antioxidant, and antidiabetic abilities. In ...
    • Assessing the effect of salmon aquaculture on fungal diversity in seawater and sediments through eDNA metabarcoding 

      Husanovic, Elmedina (Master thesis; Mastergradsoppgave, 2021-05-16)
      Fungi have been found to play important roles in marine ecosystems, e.g., symbionts of plants and animals, and as decomposers of organic materials. The fungal communities, however, are often considered less studied and their functional and taxonomic diversity in aquatic environments remains poorly understood. Since the 1970s the Norwegian salmon industry developed from a small-scale industry to ...
    • Antibiotic resistance profiles and polystyrene biofilm formation capabilities of bacteria isolated from wastewater in Tromsø 

      Imani, Sharifa Buchana (Master thesis; Mastergradsoppgave, 2021-05-18)
      Pollution of plastic in itself has become a growing focus in the last 15 years. In addition, the impact of plastic as a reservoir for pathogenic bacteria and transfer of antibiotic resistance genes has become a global concern, for individuals, organizations, policymakers and health organizations. It is important to document the relationship of microbiota associated to different types of plastic ...
    • Genomic characterization and insights of local adaptation in Norwegian juvenile lumpfish populations 

      Granviken, Emilie Østby (Master thesis; Mastergradsoppgave, 2021-05-18)
      The lumpfish (Cyclopterus lumpus Linnaeus, 1758) has for many years been an attractive target for the roe fisheries in Norway and has more recently become an important cleanerfish in the salmonid farming industry for the control of salmon lice (Copepoda: Caligidae). Despite this, there is a lack of knowledge about several life aspects of the species and studies on its genetic structure have been ...
    • Chemical and Enzyme-Assisted Extraction of Fucoidan from two Species of Brown Macroalgae (Ascophyllum nodosum and Saccharina latissima) 

      Maribu, Ingrid (Master thesis; Mastergradsoppgave, 2021-05-18)
      Marine environments contain half of the global biodiversity and are a major source of bioactive compounds. Macroalgae are vital species in marine ecosystems and are known to produce several bioactive compounds and polysaccharides that possesses several bioactivities. These molecules are traditionally extracted using methods that heavily rely on hazardous solvents and heat, that more importantly ...
    • Modeling the "microbial chassis effect" on the performance of a genetic switch 

      Verusevski, Vanja (Master thesis; Mastergradsoppgave, 2022-03-21)
      Escherichia coli is one of the most established bacterial hosts for genetic devices, partially due to the available knowledge and tools for ease of manipulation. However, there is an incentive to increase the current number of available recipients. For instance, marine bacteria are being recognized for their potential as microbial "chassis" due to their rich genetic and metabolic diversity. With ...