Publikasjoner
NIBIOs ansatte publiserer flere hundre vitenskapelige artikler og forskningsrapporter hvert år. Her finner du referanser og lenker til publikasjoner og andre forsknings- og formidlingsaktiviteter. Samlingen oppdateres løpende med både nytt og historisk materiale. For mer informasjon om NIBIOs publikasjoner, besøk NIBIOs bibliotek.
2022
Sammendrag
Three strains of chlorophyte microalgae indigenous in Norway were studied regarding their potential for nutrient removal and resource recovery from wastewater. The nutrient uptake, growth, and cell composition (total proteins and carbohydrates) were monitored under a controlled batch environment for 14 days. Additionally, the fatty acids were analyzed at the end of the study. The fastest nutrient removal was achieved by Lobochlamys segnis F12 that used up NH4+ (28 mg L-1) and PO43- (15 mg L-1) after 4 days. Similar PO43- uptake was achieved by Tetradesmus wisconsinensis H1 while its NH4+ uptake took 2 days longer. Both strains showed a higher specific growth rate (1.1 day-1) than Klebsormidium flaccidum NIVA-CHL80 (0.55 day-1). The highest biomass (1.276 ± 21 mg L-1) and carbohydrates content (40%) were achieved by T. wisconsinensis. K. flaccidum was characterized by superior protein content (53 ± 4%). In terms of total fatty acids production both K. flaccidum and L. segnis were favored (184 ± 6 and 193 ± 12 mg g-1 dry cells), especially with their high polyunsaturated fatty acid content (82 and 67%, respectively). The fatty acids of K. flaccidum consisted mainly C18:2 n-6 (73% of the total). L. segnis had a preferable n3 to n6 ratio (1.3) in their fatty acid profile. The proteins and carbohydrates content changed in all strains depending on the growth stage. Therefore, resource recovery scenarios could be further optimized for a specific cell component production combined with an appropriate strategy for nutrient removal from wastewater.
Forfattere
Ana-Maria Pantazica Mihaela-Olivia Dobrica Catalin Lazar Cristina Scurtu Catalin Tucureanu Iuliana Caras Irina Ionescu Adriana Costache Adrian Onu Jihong Liu Clarke Crina Stavaru Norica Branza-NichitaSammendrag
Despite the availability of improved antiviral therapies, infection with Hepatitis B virus (HBV) remains a3 significant health issue, as a curable treatment is yet to be discovered. Current HBV vaccines relaying on the efficient expression of the small (S) envelope protein in yeast and the implementation of mass vaccination programs have clearly contributed to containment of the disease. However, the lack of an efficient immune response in up to 10% of vaccinated adults, the controversies regarding the seroprotection persistence in vaccine responders and the emergence of vaccine escape virus mutations urge for the development of better HBV immunogens. Due to the critical role played by the preS1 domain of the large (L) envelope protein in HBV infection and its ability to trigger virus neutralizing antibodies, including this protein in novel vaccine formulations has been considered a promising strategy to overcome the limitations of S only-based vaccines. In this work we aimed to combine relevant L and S epitopes in chimeric antigens, by inserting preS1 sequences within the external antigenic loop of S, followed by production in mammalian cells and detailed analysis of their antigenic and immunogenic properties. Of the newly designed antigens, the S/preS116–42 protein assembled in subviral particles (SVP) showed the highest expression and secretion levels, therefore, it was selected for further studies in vivo. Analysis of the immune response induced in mice vaccinated with S/preS116–42- and S-SVPs, respectively, demonstrated enhanced immunogenicity of the former and its ability to activate both humoral and cellular immune responses. This combined activation resulted in production of neutralizing antibodies against both wild-type and vaccine-escape HBV variants. Our results validate the design of chimeric HBV antigens and promote the novel S/preS1 protein as a potential vaccine candidate for administration in poor-responders to current HBV vaccines.
Sammendrag
Prosjektet «Egnet jord til kistegraver» har som mål å finne sammenhenger mellom god nedbrytning av kiste med innhold og ulike jordegenskaper. I denne rapporten sammenstilles resultater fra kistegravskartlegging og feltarbeid, som omfatter to datasett. Resultatene fra feltobservasjoner, jordprøveanalyser og statistiske undersøkelser danner grunnlaget for oppdaterte anbefalinger og konklusjoner. Jordtekstur, drenering og beplantning fremheves som svært viktige både ved anleggelse av nye felter og gravplasser, og ved iverksettelse av tiltak på eksisterende felter.
Forfattere
Åsmund Mikalsen KvifteSammendrag
Det er ikke registrert sammendrag
Sammendrag
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Sammendrag
Det er ikke registrert sammendrag
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Forfattere
Kamilla SkaalsveenSammendrag
Det er ikke registrert sammendrag
Foredrag – Eksisterende vitenskapelig kunnskap om risiko ved import av planter og frø
Hanne Skomedal
Forfattere
Hanne SkomedalSammendrag
Det er ikke registrert sammendrag
Forfattere
Ivar Pettersen Siri Voll DombuSammendrag
Rapporten presenterer et forslag til utmåling av erstatning som følge av forbud mot pelsdyroppdrett basert på ekspropriasjonsrettslig praksis.