Browsing Fakultet for naturvitenskap (uspesifisert) by Author "Norges teknisk-naturvitenskapelige universitet, Fakultet for naturvitenskap og teknologi"
Now showing items 1-20 of 62
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Anaerobic digestion process using membrane integrated micro aeration
Rathnasiri, Puhulwella Gamacharige (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 ... -
Application of high-resolution NMR spectroscopy in metabolic studies of the eye
Risa, Øystein (Doktoravhandlinger ved NTNU, 1503-8181; 2004:164, Doctoral thesis, 2004)High-resolution NMR spectroscopy has, during the last two decades, had an increasing impact in biological and biochemical research. Rapid advances have led to improvements in sensitivity and dispersion of the spectra and ... -
Behaviour of nickel, iron and copper by application of inert anodes in aluminium production
Lorentsen, Odd-Arne (Dr. ingeniøravhandling, 0809-103X; 2000:104, Doctoral thesis, 2000)A thorough investigation was performed on the behaviour of Ni, Fe and Cu oxides dissolved in cryolite melts, and the solubility of these species was measured as a function of alumina content, NaF/AlF3 molar ratio (CR) and ... -
Characterisation and optimisation of the polymer electrolyte fuel cell
Vie, Preben J.S. (Dr. ingeniøravhandling, 0809-103X; 2002:37, Doctoral thesis, 2002)This thesis presents work performed on five subjects of the polymer fuel cell: • A polymer fuel cell test-facility was optimised. A fuel cell housing was designed and built, enabling measurements of ocal fuel cell ... -
Chemical and Electrochemical Characterisation of Oxide/Hydroxide Impurities in the Electrolyte for Magnesium Production
Skar, Rolf Alexander (Dr. ingeniøravhandling, 0809-103X; 2001:58, Doctoral thesis, 2001)This work is part of a research program where the aim is to develop an electroanalytical technique to determine the amount of dissolved oxide and hydroxide in industrial Mg electrolytes. The systems studied were mixtures ... -
Coevolutionary adaptations in avian brood parasites and their hosts
Stokke, Bård Gunnar (Doctoral thesis, 2001)Dette prosjektet har satt søkelyset på to problemstillinger knyttet til samevolusjonen mellom parasitt og vert; 1) utvikling av vertstilpasninger som mottrekk mot tilpasninger hos parasitten, med spesiell fokus på ... -
Colloidal Wood Resin: Analyses and Interactions
Mosbye, John Erlend (Dr. ingeniøravhandling, 0809-103X; 2003:63, Doctoral thesis, 2003)This thesis presents studies of the interactions between suspended particles and dissolved and colloidal substances (DCS) in process water. The main focus has been to determine if colloidal wood resin is adsorbed by suspended ... -
Computational Chemistry Study of Solvents for Carbon Dioxide Absorption
da Silva, Eirik Falck (Doktoravhandlinger ved NTNU, 1503-8181; 2005:148, Doctoral thesis, 2005)Absorption with aqueous amine solvents is at present the most viable technology for CO2 capture. While this is a proven technology, efforts are ongoing to improve it in order to make it a more attractive technology for ... -
Concentrations and speciation of Cu, Zn, Cd, and Al in mine-polluted Norwegian rivers : influence of main water parameters and consequences to fish
Gundersen, Pål (Doctoral thesis, 2002)This thesis presents concentration and speciation data for Cu, Zn, Cd, and Al in eight highland rivers and streams in the Røros area, central Norway. About 16 sampling campaigns were performed before, during and after ... -
Control of Fuel Cells
Zenith, Federico (Doktoravhandlinger ved NTNU, 1503-8181; 2007:65, Doctoral thesis, 2007)This thesis deals with control of fuel cells, focusing on high-temperature proton-exchange-membrane fuel cells. Fuel cells are devices that convert the chemical energy of hydrogen, methanol or other chemical compounds ... -
Controllability analysis for process and control system design
Faanes, Audun (Dr. ingeniøravhandling, 0809-103X; 2003:76, Doctoral thesis, 2003)Controllability is the ability of a process to achieve acceptable performance, and in this thesis we use controllability analysis in the design of buffer tanks, feedforward controllers, and multivariable controllers such ... -
Coulombgass i To Dimensjoner
Taraldsen, Gunnar (Master thesis, 1987) -
Criticality and novel quantum liquid phases in Ginzburg--Landau theories with compact and non-compact gauge fields
Smiseth, Jo (Doktoravhandlinger ved NTNU, 1503-8181; 2005:144, Doctoral thesis, 2005)We have studied the critical properties of three-dimensional U(1)-symmetric lattice gauge theories. The models apply to various physical systems such as insulating phases of strongly correlated electron systems as well as ... -
Degradation of polymeric and particulate organic carbon in biofilms
Kommedal, Roald (Dr. ingeniøravhandling, 0809-103X; 2003:101, Doctoral thesis, 2003)Polymeric and particulate organic carbon (POM) are fundamental compounds in the global cycling of carbon, and constitute significant amounts of BOD in municipal wastewater. The main objective of this work is to study ... -
Degradation- and Passage Kinetics of Concentrate Particles and Solubles in the Rumen
Olaisen, Vidar (Dr.ingeniøravhandling, 0809-103X; 2001:107, Doctoral thesis, 2001)This thesis deals with three actual issues of ruminant degradation and escape of dietary components: One of the main emphasis has been on how particle size distribution of concentrated feed affects the degradation and ... -
Development and modification of glass membranes for aggreessive gas separations
Lindbråthen, Arne (Doktoravhandlinger ved NTNU, 1503-8181; 2005:24, Doctoral thesis, 2005)Chlorine as a chemical is widespread in industry and found in a great variety of processes ranging from water purification to plastic production. In this thesis, a magnesium production factory was chosen as an example ... -
Development in Applied Chemometrics: AMT, acoustic chemometrics and N-way image analysis
Huang, Jun (Dr. ingeniøravhandling, 0809-103X; 2001:25, Doctoral thesis, 2001) -
Electrocatalysis in water electrolysis with solid polymerelectrolyte
Rasten, Egil (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
Marshall, Aaron (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
Hajasova, Jana (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 ...