Blar i Fakultet for naturvitenskap (uspesifisert) på tittel
Viser treff 23-42 av 87
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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 ... -
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 ... -
The Effect of Reaction Conditions and Presence of Magnesium on the Crystallization of Nickel Sulfate
(Peer reviewed; Journal article, 2021)Recycling of valuable metals such as nickel is instrumental to meet the need from the dramatic increase in electric vehicle battery production and to improve its sustainability. Nickel required in the battery manufacture ... -
Electrocatalysis in water electrolysis with solid polymerelectrolyte
(Dr. ingeniøravhandling, 0809-103X; 2001:96, Doctoral thesis, 2001)Development and optimization of the electrodes in a water electrolysis system using a polymer membrane as electrolyte have been carried out in this work. A cell voltage of 1.59 V (energy consumption of about 3.8 kWh/Nm3 ... -
Electrocatalysts for the oxygen evolution electrode in water electrolysers using proton exchange membranes : synthesis and characterisation
(Doktoravhandlinger ved NTNU, 1503-8181; 2005:96, Doctoral thesis, 2005)Electrocatalysts based on IrO2 have been synthesised and characterised using a wide range of techniques. These oxide materials were primarily developed as oxygen evolution electrocatalysts for proton exchange membrane (PEM) ... -
Electrochemical behaviour of sulphur containing species in molten salts
(Doktoravhandlinger ved NTNU, 1503-8181; 2007:254, Doctoral thesis, 2007)The behaviour of sulphur containing species has been investigated during the last few decades in various molten chloride and fluoride electrolytes but their effect on the performance of the cells producing aluminium still ... -
Entanglement and its applications in systems with many degrees of freedom
(Doktoravhandlinger ved NTNU, 1503-8181; 2006:209, Doctoral thesis, 2006)Entanglement are the non-local correlations permitted by quantum theory, believed to play a fundamental role in a quantum computer. We have investigated these correlations in a number of theoretical models for condensed ... -
Equal channel angular pressing (ECAP) of AA6082 : mechanical properties, texture and microstructural development
(Doktoravhandlinger ved NTNU, 1503-8181; 2004:129, Doctoral thesis, 2004)This thesis deals with the concept of ECAP applied to a commercial Al Mg-Si alloy (AA6082.50). A detailed analysis of the strains introduced by ECAP in a single passage through the die has been made, based on direct ... -
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 ... -
Evolution of Alpha Phase Alumina in Agglomerates upon Addition to Cryolitic Melts
(Dr. ingeniøravhandling, 0809-103X; 2002:50, Doctoral thesis, 2002)Rapid dissolution of alumina upon addition to the cryolitic melt is crucial for the modern Hall-Heroult process for aluminium production. The formation of slow - dissolving alumina agglomerates may be detrimental, and ... -
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. ... -
Fiskebiologiske undersøkelser i Auravassdraget. Årsrapport 2005
(NINA rapport;115, Research report, 2006)Formålet med denne undersøkelsen er å overvåke utviklingen av bestandene av laks og sjøør-ret i Auravassdraget. Resultatene skal danne grunnlag for å evaluere de tiltakene som er gjen-nomført som kompensasjon for negative ... -
Flow and Heat Transfer in a Radially Spreading Liquid Metal Jet Related to Casting of Ferroalloys
(Dr. ingeniøravhandling, 0809-103X; 2000:83, Doctoral thesis, 2000)In the past more and more advanced and fine-tuned processes for steel production have resulted in increased demands for new and more costeffective ferroalloys used as constituents in the processes. Casting techniques and ... -
Genetic, molecular and functional studies of RAC GTPases and the WAVE-like regulatory protein complex in Arabidopsis thaliana.
(Doktoravhandlinger ved NTNU, 1503-8181; 2004:68, Doctoral thesis, 2006)Small GTP-binding proteins are molecular switches that serve as important regulators of numerous cellular processes. In animal and plant cells, the Rho family of small GTPases participate in e.g. organisation of the actin ... -
GXP: Analyze and Plot Plant Omics Data in Web Browsers
(Peer reviewed; Journal article, 2022)Next-generation sequencing and metabolomics have become very cost and work efficient and are integrated into an ever-growing number of life science research projects. Typically, established software pipelines analyze raw ... -
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 ... -
Hydrogen-chlorine fuel cell for production of hydrochloric acid and electric power : chlorine kinetics and cell design
(Doktoravhandlinger ved NTNU, 1503-8181; 2005:932005:70, Doctoral thesis, 2005)This thesis work is the continuation and final part of a joint project between the Department of Materials Technology, NTNU and Norsk Hydro Research Center in Porsgrunn, looking at the possibility of using fuel cells for ... -
Identifying the environmental drivers of corridors and predicting connectivity between seasonal ranges in multiple populations of Alpine ibex (Capra ibex) as tools for conserving migration
(Peer reviewed; Journal article, 2024)Aim Seasonal migrations, such as those of ungulates, are particularly threatened by habitat transformations and fragmentation, climate and other environmental changes caused by anthropogenic activities. Mountain ungulate ... -
Interactions between Chitosans and Bacteria: Flocculation and Adhesion
(Dr. ingeniøravhandling, 0809-103X; 2001:80, Doctoral thesis, 2001) -
Investigation of the Chemistry of Liquid H2S Scavengers
(Dr.ingeniøravhandling, 0809-103X; 2002:70, Doctoral thesis, 2002)1,3,5-Tris(2-hydroxyethyl)-1,3,5-triazinane (1), in the industry often referred to as "Triazine", is a widely used liquid H2S scavenger. The goal of the work presented in this dissertation was to examine the chemistry of ...