Browsing Fakultet for naturvitenskap (NV) by Title
Now showing items 4325-4344 of 12479
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Extraction and characterization of bioactive natural products from brown seaweed Alaria esculenta
(Master thesis, 2022)Natural products are chemical compounds found in natural sources including terrestrial and marine organisms. In addition to their nutritional values, natural products can also exhibit health benefits such as antipathogenic, ... -
Extraction and Characterization of Collagen From Heads of Cod (Gadus morhua) and Pollock (Pollachius virens)
(Master thesis, 2022)En stor mengde restråstoff oppstår fra fiskeri og akvakultur globalt hvert år. I 2019 ble det produsert en mengde på totalt 964 000 tonn restråstoff fra hvitfisk, pelagisk fisk, akvakultur og skalldyr i Norge. Det ble ... -
Extraction and characterization of protein from Alaria esculenta, Palmaria palmata and Saccharina latissima
(Master thesis, 2016)Global population growth stimulates the search for new, sustainable ingredients in food and feed. The largest potential for production growth is found in the ocean, including cultivation and harvesting of macroalgae. Today, ... -
Extraction, Characterization, and Biological Activities of Laminarin and Fucoidan from Laminaria hyperborea
(Master thesis, 2019)Fucoidan og laminaran finnes som biprodukter i sidestrømmer som stammer fra alginatproduksjon. Utnyttelse av restråstoff fra tare kan generere produkter av kommersiell verdi, og dermed føre til økonomisk vekst for ... -
Extraction, Isolation and Structure Elucidation of Saponins from Herniaria incana
(Master thesis, 2013)Species of the Herniaria genus have been reported to have several medicinal uses. Two of the species from this genus, Herniaria glabra and Herniaria hirsuta, have both been documented to contain saponins. This can explain ... -
Extraction, partial purification and characterization of alkaline protease from rainbow trout (Onchorhynchus Mykiss) viscera
(Journal article; Peer reviewed, 2019)In this study, crude alkaline proteases were recovered from rainbow trout (Oncorhynchus mykiss) viscera and partially purified by use of different saturation of ammonium sulfate. The enzyme exhibited highest yield, purity ... -
Extraction, quantification and study of interfacially active petroleum components”
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:375, Doctoral thesis, 2012)The recovery, transport and production of crude oil include challenges related to pipeline flow, separation and pressure drops occurring in the process, due to a vast array of indigenous molecules present in petroleum ... -
Extractives in process water from compressive pre-treatment of chips in mechanical pulping
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:47, Doctoral thesis, 2011)The main abjectives of this work were to evaluate the extent to which extractives in wood chips for mechanical pulping are released into process water during compressive pre-treatment before refining and to develop a method ... -
Extragalactic Cosmic Rays
(Peer reviewed; Journal article, 2022)I review the status of ultrahigh-energy cosmic ray (UHECR) physics. After introducing the main experimental results and summarizing possible intepretations, I discuss observational and theoretical constraints on the sources ... -
Extra‐pair paternity and antiparasitic defence
(Peer reviewed; Journal article, 2020)Background Extra-pair paternity (EPP) in birds provides benefits in terms of more offspring, and characteristics for maintenance of this behaviour have been the subject of investigation. Microorganisms are known to be ... -
Extreme enhancement of superconductivity in epitaxial aluminum near the monolayer limit
(Peer reviewed; Journal article, 2023)BCS theory has been widely successful at describing elemental bulk superconductors. Yet, as the length scales of such superconductors approach the atomic limit, dimensionality as well as the environment of the superconductor ... -
Extreme events, trophic chain reactions, and shifts in phenotypic selection
(Peer reviewed; Journal article, 2023)Demographic consequences of rapid environmental change and extreme climatic events (ECEs) can cascade across trophic levels with evolutionary implications that have rarely been explored. Here, we show how an ECE in high ... -
Extreme Frost Tolerance in Boreal Conifers
(Doktoravhandlinger ved NTNU, 1503-8181; 2009:132, Doctoral thesis, 2009) -
Extreme Levels of Ocean Acidification Restructure the Plankton Community and Biogeochemistry of a Temperate Coastal Ecosystem: A Mesocosm Study
(Peer reviewed; Journal article, 2021)The oceans’ uptake of anthropogenic carbon dioxide (CO2) decreases seawater pH and alters the inorganic carbon speciation – summarized in the term ocean acidification (OA). Already today, coastal regions experience episodic ... -
Extreme low temperature tolerance in woody plants
(Journal article; Peer reviewed, 2015)Woody plants in boreal to arctic environments and high mountains survive prolonged exposure to temperatures below -40°C and minimum temperatures below -60°C, and laboratory tests show that many of these species can also ... -
Extreme original data yield extreme decline effects
(Peer reviewed; Journal article, 2023)Our meta-analysis showing a dramatic decline effect in ocean acidification (OA) studies on fish behavior [1] was criticized and reanalyzed by Dr. Munday [2]. After applying changes to the dataset in a seemingly biased ... -
Extremely low thermal conductivity and high thermoelectric performance in liquid-like Cu2Se1-xSx polymorphic materials
(Journal article, 2017)Recently, copper chalcogenides Cu2−xδ (δ = S, Se, Te) have attracted great attention due to their exceptional thermal and electrical transport properties. Besides these binary Cu2−xδ compounds, the ternary Cu2−xδ solid ... -
Eyes beneath the surface - using a miniROV to reveal the habitat and dietary choices of the European shag
(Master thesis, 2018)The population of sea birds in Norway is drastically declining, and numbers of breeding European shag (Phalacrocorax aristotelis) in the nesting colony in Runde, Norway, has declined with ~96% in the last 40 years. Mapping ... -
Eyes on the future: buffering increased costs of incubation by abandoning offspring
(Peer reviewed; Journal article, 2023)Life history theory states that the resources invested in current reproduction must be traded off against resources needed for survival and future reproduction. Long-lived organisms have a higher residual reproductive value ... -
Fabrication and Characterisation of Porous Coatings Enriched with Copper on CP Titanium Grade 2 under Plasma Electrolytic Oxidation
(Journal article; Peer reviewed, 2019)In the present paper, coatings obtained on CP Titanium Grade 2 samples by Plasma Electrolytic Oxidation (PEO) in electrolyte containing concentrated phosphoric acid H3PO4 with copper nitrate Cu(NO3)2∙3H2O, are studied with ...