Browsing Fakultet for naturvitenskap (NV) by Title
Now showing items 8290-8309 of 12512
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Origin of potassium promotion effects on CuCl2/gamma-Al2O3 catalyzed ethylene oxychlorination
(Peer reviewed; Journal article, 2020)Potassium promoters are widely used in industrial catalysts of ethylene oxychlorination to achieve optimum performance. However, the origin of the promoter effect is not fully understood. Herein, we investigated the potassium ... -
Ornamentation and Characteristics of the Tail in the Male Guppy
(Master thesis, 2014)Male guppies (Poecilia reticulata) show great variation in both shape and coloration of the caudal fin. In some males, an elongation of the caudal fin is present, referred to as a sword. This thesis will mainly focus on ... -
Orthorhombic-tetragonal phase transition induced by Ta isovalent doping and its effect on fatigue characteristics of KNL-NSTx ceramics
(Journal article; Peer reviewed, 2018)The effect of Ta addition on the bipolar fatigue characteristics of lead-free KNL-NSTx ceramics (x = 0, 0.04, 0.07 and 0.11 mol%) is studied. Bipolar cycling up to 1 × 106 cycles leads to strong degradation of the polarization ... -
Oscillatory, ultradian movements in Arabidopsis: Biophysical studies of rhythms in plants onboard the International Space Station and on Earth
(Doktoravhandlinger ved NTNU, 1503-8181; 2009:8, Doctoral thesis, 2009) -
Osmotic membrane pressure actuator
(Master thesis, 2011)This master thesis has focused on the membrane for the osmotic membrane pressure actuator (OMPA). The OMPA is an autonomous inflow control device for intended use in oil and gas wells. Its function is to prevent water from ... -
Osteocyte-Like Cells Differentiated From Primary Osteoblasts in an Artificial Human Bone Tissue Model
(Peer reviewed; Journal article, 2023)In vitro models of primary human osteocytes embedded in natural mineralized matrix without artificial scaffolds are lacking. We have established cell culture conditions that favored the natural 3D orientation of the bone ... -
Osteogenic differentiation of human mesenchymal stem cells in mineralized alginate matrices
(Journal article; Peer reviewed, 2015)Mineralized biomaterials are promising for use in bone tissue engineering. Culturing osteogenic cells in such materials will potentially generate biological bone grafts that may even further augment bone healing. Here, ... -
Outcomes of brood parasite-host interactions mediated by egg matching: Common cuckoos Cuculus canorus versus Fringilla finches
(Journal article; Peer reviewed, 2011)Background: Antagonistic species often interact via matching of phenotypes, and interactions between brood parasitic common cuckoos (Cuculus canorus) and their hosts constitute classic examples. The outcome of a parasitic ... -
Outside-in control - does plant cell wall integrity regulate cell cycle progression?
(Journal article; Peer reviewed, 2018)During recent years it has become accepted that plant cell walls are not inert objects surrounding all plant cells but are instead highly dynamic, plastic structures. They are involved in a large number of cell biological ... -
Ova lipid profiling and egg quality in wild and captive lumpfish, Cyclopterus lumpus (Linnaeus, 1758)
(Peer reviewed; Journal article, 2022)Lumpfish (Cyclopterus lumpus) serves an important role as cleaner fish for removing salmon lice in salmon aquaculture. For this use, cultivated lumpfish are preferred over wild-caught fish to avoid overexploitation of ... -
An Overall Furnace Model for the Silicomanganese Process
(Journal article; Peer reviewed, 2021)An overall model for a pilot-scale silicomanganese furnace that simultaneously considers electrical and thermal conditions, process chemistry, and flow of solid and liquid substances. -
Overall Process Analysis and Optimisaton for CO2 Capture from Coal Fired Power Plants basen on Phase Change Solvents Forming Two Liquid Phases
(Journal article; Peer reviewed, 2013)In this work the potential of a novel post-combustion CO2 capture process is analysed with respect to the integrated overall process. As solvent a blend of two amines (DEEA/MAPA) which forms two liquid phases under CO2 ... -
Overexpression of two new acyl-CoA:diacylglycerol acyltransferase 2-like acyl-CoA:sterol acyltransferases enhanced squalene accumulation in Aurantiochytrium limacinum
(Peer reviewed; Journal article, 2022)Thraustochytrids are heterotrophic marine eukaryotes known to accumulate large amounts of triacylglycerols, and they also synthesize terpenoids like carotenoids and squalene, which all have an increasing market demand. ... -
Overflatebehandling av aluminiumslegering og kompatibilitet med hydrogenperoksid for romapplikasjoner
(Bachelor thesis, 2022)Nammo har fått en kontrakt som innebærer utvikling av styresystemet Roll and Attitude Control System (RACS) for bæreraketten VEGA-E til European Space Agency (ESA). Styresystemets drivstoffbeholder er av aluminium med ... -
Overflatebehandling av aluminiumslegering og kompatibilitet med hydrogenperoksid for romapplikasjoner
(Bachelor thesis, 2022)Nammo har fått en kontrakt som innebærer utvikling av styresystemet Roll and Attitude Control System (RACS) for bæreraketten VEGA-E til European Space Agency (ESA). Styresystemets drivstoffbeholder er av aluminium med ... -
Overlevelse av Salmonella enterica serovar Agbeni og Salmonella enterica serovar Typhimurium på tørket frukt og nøtter.
(Master thesis, 2020)Tørket frukt og nøtter har lav vannaktivitet (aw), og de fleste bakterier kan ikke vokse i slike omstendigheter. Noen matbårne patogene, slik som Salmonella, kan imidlertid overleve i flere måneder i mat med lav aw ved ... -
Overlevelse av Salmonella Typhimurium og Salmonella Agbeni på tørkede kokosprodukter
(Master thesis, 2023)Tørkede produkter med lav vannaktivitet blir generelt regnet som spiseklare produkter som er trygge for konsum. Derimot er det en mulighet for noen patogene bakterier å overleve i slike miljøer som kan forårsake sykdommer ... -
Overlevelse og eventuell vekst av Salmonella i tørket frukt - en mulig risiko for norske forbrukere
(Master thesis, 2020)Våren 2019 ble det påvist et sykdomsutbrudd med Salmonella i tørket frukt i Norge. Totalt fikk 58 personer påvist salmonellose og det var begge kjønn i alle aldre spredt rundt i hele landet som ble syke. Produktet som ble ... -
Overpumping av makrell (II) Effekt pa fangstkvalitet
(Research report, 2014)Prosjektets hovedmål er å klarlegge hvorvidt det kan registreres forskjeller i makrellens kvalitet når den er pumpet direkte om bord i fangstfartøyet og når den er pumpet til et annet fartøy (overpumping). Kvaliteten på ... -
Overpumping av makrell (Ill) Effekt pa fangstkvalitet, resultater fra tokt 2014
(Research report, 2014)Prosjektets hovedmål er å klarlegge hvorvidt det kan registreres forskjeller i makrellens kvalitet når den er pumpet direkte om bord i fangstfartøyet og når den er pumpet til et annet fartøy (overpumping). Dette er 3. ...