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Evaluation of ozone and peracetic acid use during a Yersinia ruckeri challenge in Atlantic salmon (Salmo salar) freshwater recirculating aquaculture systems
(Master thesis; Mastergradsoppgave, 2023-05-16)Yersinia ruckeri (Y. ruckeri) the causative agent of Enteric red-mouth disease (ERM), a serious septicemic bacterial disease of salmonid fish, poses a significant challenge in salmon production. With the emergence of recirculating aquaculture system (RAS) in Norway, new biological challenges in relation to infectious disease outbreaks have arisen. There is a gap in knowledge on how potential ... -
Beaivváš nieida mánáidgirjji dulkon: Govviduvvon kulturdovddaheamit ja árvvut Marry Áilonieida Somby girjjis Beaivváš nieida
(Master thesis; Mastergradsoppgave, 2022-05-15)The thesis examines the children's book Beaivváš nieida by Marry Áilonieida Somby. It is based on an old myth about how the Sun's daughter taught the Sámi people to tame reindeer. An overview of the cultural background is given: myths, stories and yoiks in Sámi society, and Sámi child rearing. The book is analysed using narratological theories - in particular Genette's chronology, Barthes' intertext ... -
From Trash to Treasure: The use of Lumpfish (Cyclopterus lumpus) as feed for Red King Crab (Paralithodes camtschaticus)
(Master thesis; Mastergradsoppgave, 2023-05-15)This thesis explores the potential of using farmed lumpfish (Cyclopterus lumpus), discarded from Atlantic salmon (Salmo salar L.) aquaculture industry, as a sustainable feed for juvenile red king crabs (Paralithodes camtschaticus). The red king crab has successfully established a self-sustaining population in the Barents Sea. With the red king crab being a large generalist predator, its impact on ... -
Systemic and mucosal stress responses of Atlantic salmon (Salmo salar) to peracetic acid
(Master thesis; Mastergradsoppgave, 2019-05-15)Infectious diseases are still a major problem in salmon aquaculture despite several attempts on developing prophylactic measures. Amoebic gill disease (AGD) is considered a growing threat in Norwegian salmon aquaculture. It has increased in prevalence and geographic distribution in the last years, resulting in considerable economic losses. Current treatments (i.e., freshwater and hydrogen peroxide ... -
DC-DC Converter For Fuel Cell (Control Strategy, Voltage Curve, Optimization, Converter Type). Current-fed Full-bridge Isolated DC-DC Converter With An Active Clamp Circuit For Fuel Cell Application
(Master thesis; Mastergradsoppgave, 2022-05-15)This thesis investigates one of the most favorable converters for integrating fuel cells into a DC microgrid. A current-fed full-bridge isolated DC-DC converter has advantages such as high voltage conversion ratio, low switches’ losses, and low input current ripple which make it one of the best choices for Fuel cells (FC). This converter transfer power to the load through the leakage inductance which ... -
Molecules and Morphotypes – Exploring benthic foraminiferal biodiversity in seep-influenced habitats
(Master thesis; Mastergradsoppgave, 2023-05-15)Beneath the seafloor, methane, a potent greenhouse gas, is trapped in ice-like structures, prone to destabilization and gas release in a warming climate. Gas releases through the seabed concentrated in seeps, creating unique ecosystems, hostile to some lifeforms but able to sustain others. Foraminifera have proved useful in biodiversity and ecosystem quality assessment due to their ubiquity in ... -
The effect of β-lactamase evolution on biofilm formation in Vibrio cholerae
(Master thesis; Mastergradsoppgave, 2023-05-15)Antimicrobial resistance (AMR) has emerged as one of the greatest threats to public health in the 21st century. Especially, the production of -lactamase enzymes has become the leading cause of -lactam resistance in Gram-negative pathogens. In addition, many of the pathogens associated with extensive antimicrobial resistance form biofilms, which further increases their persistence. Studies from ... -
Nonclassical MHC class I L-lineage genes in Atlantic Salmon (Salmo salar L.): An investigation into transcriptional induction and cell type-specific expression patterns of different L-lineage subgroups
(Master thesis; Mastergradsoppgave, 2023-05-15)The world's population is growing, and so is the world's food demand, underpinning the need for sustainable food production. Over the last few decades, Norwegian aquaculture production of Atlantic Salmon (Salmo Salar L.) and rainbow trout (Oncorhynchus mykiss) expanded rapidly. Unfortunately, today’s fish health situation is challenging due to virus infections, among other reasons. Today's virus ... -
Ingestion of Tyre Crumb Rubber and Uptake of Associated Contaminants in Marine Invertebrates (Pandalus borealis) and Fish (Cyclopterus lumpus) – An Experimental Exposure Study
(Master thesis; Mastergradsoppgave, 2022-05-15)Crumb rubber (CR) produced from end of life vehicle tires is widely used on artificial sports fields and to create urban artificial surfaces. It is also used as a surrogate for tyre wear particles in experimental studies simulating the behaviour and effects of car tyre particles in the environment. It is known to contain a wide range of organic chemicals and metals, some of which are only just being ... -
Kvalitet av legemiddelbruk og legemiddelinformasjon hos hoftebruddspasienter ved Sykehuset i Vestfold HF – en tverrsnittstudie
(Master thesis; Mastergradsoppgave, 2019-05-15)Det er i hovedsak eldre personer som gjennomgår hoftebrudd, som er et fryktet osteoporotisk brudd. Eldre har flere sykdommer som fører til at de blir behandlet med flere legemidler sammenlignet med yngre. Dette vil igjen øke risikoen for uhensiktsmessig legemiddelbruk. I tillegg overføres eldre hyppig inn og ut og mellom helseinstitusjoner, som skaper et behov for velfungerende informasjonsoverføring. ... -
Bruk av Lean som forbedringsverktøy i norsk fiskeindustri: En studie av Lerøy Seafood, avd. Melbu
(Master thesis; Mastergradsoppgave, 2021-05-15)Norsk fiskeindustri har tatt i bruk både ny teknologi og nye styringsverktøy for å øke effektiviteten, forbedre utnyttelsen av råstoffet og styrke fortjenesten. Ett av styringsverktøyene som har blitt introdusert i de seinere årene er Lean. Dette er et styringsverktøy som har sitt utspring i Toyota Motor Corporation og japansk kultur. Denne studien ser nærmere på hvordan Lean er satt sammen og ... -
Insights into glacial processes from micromorphology of silt-sized sediment
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-05-07)Silt-rich meltwater plume deposits (MPDs) analyzed from marine sediment cores have elucidated relationships that are clearly connected, yet difficult to constrain, between subglacial hydrology, ice-marginal landforms, and grounding-zone retreat patterns for several glacial catchments. Few attempts have been made to infer details of subglacial hydrology, such as flow regime, geometry of drainage ... -
Acoustic evidence of hydrocarbon release associated with the Spitsbergen Transform Fault, north of the Molloy Ridge, Fram Strait
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-04-16)Hydrocarbon gases formed from biotic and abiotic processes are released through the seafloor at different locations around the world. They have been widely observed directly in video and photo data, and indirectly on echosounder data. Even though biotic gas generation is a very common process, abiotic gas generation is limited to regions where serpentinization of ultramafic rocks occur. Indications ... -
Sedimentological and geochemical investigations of hydrothermally impacted sediments at the Aurora vent field, Fram Strait
(Mastergradsoppgave; Master thesis, 2023-05-15)Hydrothermal vents are the result of the interaction between seawater and magma and occur at regular intervals along mid ocean ridges. The first visual confirmation of plumes was done in 1977. The detection of hydrothermal plumes has both provided indirect evidence for their existence and a resolution of the occurrences . In deep ocean with low sedimentation rates, hydrothermal plumites have the ... -
Vold og trusler i institusjonsarbeid Hvordan påvirkes miljøpersonal av å bli utsatt for vold og trusler i forbindelse med miljøterapeutisk arbeid blant institusjonsbeboere, og hvordan håndteres dette av arbeidsgiver?
(Master thesis; Mastergradsoppgave, 2023-05-15)Besvarelsen tar for seg miljøpersonal sine erfaringer og opplevelser av å bli utsatt for vold og trusler fra institusjonsbeboere, og hvordan man oppfatter at kollegaer og arbeidsgiver håndterer slike situasjoner. Besvarelsen inneholder faglige anbefalinger til hvordan man kan forebygge voldelig og truende atferd fra institusjonsbeboere, og hvordan man som miljøpersonal, kollega og leder kan håndtere ... -
Impact of temperature-dependent developmental plasticity on immune response and cardiac health to Yersinia ruckeri infection, in Atlantic salmon parr
(Master thesis; Mastergradsoppgave, 2023-05-15)Heart injuries and diseases are one of the largest challenges in Atlantic salmon aquaculture. Presently, salmon experience intensive farming conditions and feeding regimes, and different viral and bacterial pathogens flourish and create cardiac health risks. Many have suggested how early life history plays a greater role in performance than previously assumed. The RCN-NFR funded project COOLFISH ... -
Drift Away or Struggle Against the Current - An Attitudinal Investigation of EFL Teachers’ and Prospective Teachers’ Attitudes to SE and NSE
(Mastergradsoppgave; Master thesis, 2022-05-15)This study presents a mixed-methods study of prospective and experienced teachers’ attitudes to Standard Englishes (SE) (Received Pronunciation & General American) and Non-standard Englishes (NSE) (Norwegian English & Neutral English). Three prospective teachers and two experienced teachers were interviewed using semi-structured interviews complemented with a Likert scale questionnaire with 20 ... -
Hvordan arbeide med å utvikle sikkerhetskultur i norsk havbruksnæring
(Master thesis; Mastergradsoppgave, 2023-05-15)Den norske oppdrettsnæringen er en teknologisk og kompleks industri, som fører til at de ansatte møter risiko for å skade seg eller omkomme på arbeid. De siste årene har det vært en økning i antall alvorlige arbeidsulykker i næringen. For å ivareta sikkerhetshensynet til mennesker, fisk, materiell og økonomi er det nødvendig at selskap og forvaltningsorgan setter ekstra fokus på helse-, miljø- og ... -
The Association between the Energy-adjusted Dietary Inflammatory Index and the Risk of Colorectal Cancer in The Norwegian Women and Cancer Study (NOWAC)
(Mastergradsoppgave; Master thesis, 2023-05-15)Background: Colorectal cancer (CRC) is one of the most common cancer types and a leading cause of cancer death worldwide. Norwegian women had the highest incidence rate in 2020 compared to women in other countries. Existing evidence suggests that the dietary inflammatory potential is associated with the risk of CRC and that the risk may vary by anatomical subsite. However, the findings are inconsistent ... -
Immunstatus hos fertil og steril laks under sjøfasen - en komparativ oversikt
(Master thesis; Mastergradsoppgave, 2022-05-15)Rømning av oppdrettslaks medfører til uønsket genetisk innblanding i den ville laksebestanden, noe som resulterer i dårligere ytelse og overlevelse hos den ville laksen. I tillegg er kjønnsmodning av oppdrettslaksen et velferdsproblem, da dette medfører en rekke negative effekter for fisken, blant disse redusert vekst, immunrespons og hypo- osmoregulatoriske evner. En mulig løsning på disse problemene ...
