Blar i Fakultet for naturvitenskap (uspesifisert) på utgivelsesdato
Viser treff 61-80 av 85
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Multi-component interfacial transport as described by the square gradient model: evaporation and condensation.
(Doktoravhandlinger ved NTNU, 1503-8181; 2009:176, Doctoral thesis, 2009)The aim of this thesis is to build a theoretical approach which allows to describe the behavior of fluid during evaporation and condensation in multicomponent systems. We consider isotropic non-polarizable mixtures. We ... -
Anaerobic digestion process using membrane integrated micro aeration
(Doktoravhandlinger ved NTNU, 1503-8181; 2010:190, Doctoral thesis, 2010)Anaerobic digestion, AD, is regarded as a key environmental technology in industrial, agricultural, and domestic sectors for integrated solid and liquid waste treatment and renewable energy production. The main objectives ... -
Modelling of gas explosions
(Doktoravhandlinger ved NTNU, 1503-8181; 2010:221, Doctoral thesis, 2010)The content of this thesis is a study of gas explosions in complex geometries and presentation and validation of a method for simulating flame acceleration and deflagration to detonation transition. The thesis includes a ... -
Homoacetogenic H2 Consumption In Fermentative Hydrogen Production Processes
(Doktoravhandlinger ved NTNU, 1503-8181; 2010:182, Doctoral thesis, 2010)Hydrogen gas generation has been studied by environmental biotechnologists since the 1930’s as a key intermediate in biogas process, and since the 70’s also because of its potential as a future energy carrier. Exhaustive ... -
Non-Intrusive Mass Flow Measurement of Solids in Pneumatic Conveying Systems
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:76, Doctoral thesis, 2011)Measuring mass flow of solids in pneumatic conveying systems has been a key element in industry and a challenge for researchers for many years. Many methods have been developed in the past; however, there is no perfect ... -
Bottom RedOx Model (BROM v.1.1): a coupled benthic–pelagic model for simulation of water and sediment biogeochemistry
(Journal article; Peer reviewed, 2017)Interactions between seawater and benthic systems play an important role in global biogeochemical cycling. Benthic fluxes of some chemical elements (e.g., C, N, P, O, Si, Fe, Mn, S) alter the redox state and marine carbonate ... -
Life-stage associated remodeling of lipid metabolism regulation in Atlantic salmon
(Journal article; Peer reviewed, 2018)Atlantic salmon migrates from rivers to sea to feed, grow and develop gonads before returning to spawn in freshwater. The transition to marine habitats is associated with dramatic changes in the environment, including water ... -
Mechanical, thermal and swelling properties of cellulose nanocrystals/PVA nanocomposites membranes
(Journal article; Peer reviewed, 2018)Cellulose nanocrystals (CNC) have strong reinforcing properties when incorporated in a compatible polymer matrix. The study was conducted to investigate the effect of addition of different proportions of CNC on the mechanical, ... -
Biaxial strength and slow crack growth in porous alumina with silica sintering aid
(Journal article, 2018)Biaxial strength, fracture toughness and subcritical crack growth are reported for coarse grained porous alumina ceramics. The materials were prepared with a varying amount of a silica sintering aid, which resulted in the ... -
Little Ice Age summer temperatures in Western Norway from a 700-year tree-ring chronology
(Journal article; Peer reviewed, 2018)A ring-width Pinus sylvestris chronology from Sogndal in western Norway was created, covering the period AD 1240–2008 and allowing for reconstruction of monthly mean July temperatures. This reconstruction is the first of ... -
Numerical analysis of boundary conditions in a Lagrangian particle model for vertical mixing, transport and surfacing of buoyant particles in the water column
(Journal article; Peer reviewed, 2019)Lagrangian particle models are used for many applications in the ocean sciences, including transport modelling of oil spills, fish eggs and larvae, plastics, and sediment particles. In the context of oil spill modelling, ... -
Quantitative and qualitative consequences of reduced pollen loads in a mixed-mating plant
(Journal article; Peer reviewed, 2019)Greater pollination intensity can enhance maternal plant fitness by increasing seed set and seed quality as a result of more intense pollen competition or enhanced genetic sampling. We tested experimentally these effects ... -
Effect of Processing Parameters on the Relative Density of AlSi10Mg Processed by Laser Powder Bed Fusion
(Journal article, 2019)In order for a material processed by laser powder bed fusion (LPBF) to achieve the desired mechanical properties, the relative density of the material should be as high as possible. In this study, the effect of various ... -
Collection of aluminium packaging today
(Research report, 2019)This report investigates the collection of aluminium packaging, particularly in China, the United States and the European Union. A literature search among journal articles using Google Scholar, company and organization ... -
Quantitative and qualitative consequences of reduced pollen loads in a mixed-mating plant
(Journal article; Peer reviewed, 2019)Greater pollination intensity can enhance maternal plant fitness by increasing seed set and seed quality as a result of more intense pollen competition or enhanced genetic sampling. We tested experimentally these effects ... -
Evidence of avian influenza virus inseabirds breeding on a Norwegian high-Arctic archipelago
(Peer reviewed; Journal article, 2020)Wild aquatic birds serve as the natural reservoir for avian influenza virus (AIV), a disease with significant implications for avian and mammalian health. Climate change is predicted to impact the dynamics of AIV, particularly ... -
Understanding Selectivity in CO2 Hydrogenation to Methanol for MoP Nanoparticle Catalysts Using In Situ Techniques
(Peer reviewed; Journal article, 2021)Molybdenum phosphide (MoP) catalyzes the hydrogenation of CO, CO2 , and their mixtures to methanol, and it is investigated as a high-activity catalyst that overcomes deactivation issues (e.g., formate poisoning) faced by ... -
Experimental Characterization and Modelling of the PLC Effect in an AlMg-Alloy
(Peer reviewed; Journal article, 2021)In the present work, uniaxial tension tests have been conducted to study the mechanical response of a commercial Al4.5wt%Mg alloy (AA5182). The measurements range from the strain rate of 10-4 to 100 s-1 at room temperature. ... -
Effect of cobalt promotion on hydrotalcite-derived nickel catalyst for CO2 methanation
(Peer reviewed; Journal article, 2021)A series of cobalt-promoted Ni-Mg-Al hydrotalcite-derived catalysts were tested towards CO2 methanation reaction. The best among examined catalysts was the one with 1 wt% of cobalt in fresh hydrotalcite, obtaining 77% of ... -
On-shell recursion relations for nonrelativistic effective field theories
(Peer reviewed; Journal article, 2021)We derive on-shell recursion relations for nonrelativistic effective field theories (EFTs) with enhanced soft limits. The recursion relations are illustrated through analytic calculation of tree-level scattering amplitudes ...