Blar i Fakultet for naturvitenskap (uspesifisert) på tittel
Viser treff 1-20 av 84
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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 ... -
Application of high-resolution NMR spectroscopy in metabolic studies of the eye
(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
(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 ... -
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 ... -
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 ... -
Can Temperature-Programmed Techniques Provide the Gold Standard for Carbon Surface Characterization?
(Peer reviewed; Journal article, 2022)Due to their chemical and thermal stability, electrical conductivity, and high specific surface areas, nanocarbons and porous carbon materials have found use in numerous key applications within the current transition of ... -
Characterisation and optimisation of the polymer electrolyte fuel cell
(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
(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
(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 ... -
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 ... -
Colloidal Wood Resin: Analyses and Interactions
(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
(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
(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
(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
(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
(Master thesis, 1987) -
Criticality and novel quantum liquid phases in Ginzburg--Landau theories with compact and non-compact gauge fields
(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
(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
(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
(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 ...