Browsing Fakultet for naturvitenskap (uspesifisert) by Document Types "Doctoral thesis"
Now showing items 21-40 of 60
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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 ... -
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 ... -
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 ... -
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 ... -
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 ... -
Leadership and leadership communication in a matrix structured organization : some critical factors
(Doktoravhandlinger ved NTNU, 1503-8181; 2005:233, Doctoral thesis, 2005)This case study has shown how nearly every success and failure in the matrix structured Segment X was a result of leadership behaviour. If Project I was to be an unreserved success every leader on every level had to succeed ... -
Lepton flavour violation in minimal supersymmetric extensions to the Standard model
(Doktoravhandlinger ved NTNU, 1503-8181; 2004:22, Doctoral thesis, 2003) -
Life history strategies, mate choice, and parental investment among Norwegians over a 300-year period
(Doktoravhandlinger ved NTNU, 1503-8181; 2005:54, Doctoral thesis, 2005)In this thesis, seven papers concerning life history, mate choice and parental investment strategies are presented. Data was compiled from old church books from two parishes in Central Norway from 1700-1900, Soknedal and ... -
Mass Transport and Kinetic Phenomena in Catalytic Polymerization of Olefins
(Dr. ingeniøravhandling, 0809-103X; 2001:32, Doctoral thesis, 2001) -
Metabolism and function of β-1,3-glucan in marine diatoms
(Dr.ingeniøravhandling, 0809-103X; 2002:4, Doctoral thesis, 2002)β-1,3-Glucan (chrysolaminaran) is the principal storage polysaccharide in diatoms (Bacillariophyceae), the major primary producers in the sea. The glucan generally contributes a substantial fraction of the algal biomass, ... -
Minimum Energy Requirements in Complex Distillation Arrangements
(Dr. ingeniøravhandling, 0809-103X; 2001:43, Doctoral thesis, 2001)Distillation is the most widely used industrial separation technology and distillation units are responsible for a significant part of the total heat consumption in the world’s process industry. In this work we focus on ... -
Modeling the Economics and Market Adoption of Distributed Power Generation
(Doctoral Theses at NTNU, 1503-8181; 2006:93, Doctoral thesis, 2006)After decades of power generating units increasing in size, there is currently a growing focus on distributed generation, power generation close to energy loads. Investments in large-scale units have been driven by economy ... -
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 ... -
Motor control of the upper trapezius
(Doktoravhandlinger ved NTNU, 1503-8181; 2005:80, Doctoral thesis, 2005)Background The main objective of this thesis was to establish new insight into the motor control of low-threshold motor units in the trapezius muscle. Special attention was given to motor unit recruitment threshold related ... -
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 ... -
Multivariate Image Regression (MIR) for Quantitative Predictions. Prototype Software Implementation and Selected Industrial-Technological Pilot Studies
(Dr. ingeniøravhandling, 0809-103X; 2000:99, Doctoral thesis, 2001)In large and important sectors of modern production, there is an increased demand for on-line or at-line information. Both consumers and governmental regulations require that producers can document the quality of their ... -
Noise and dissipation in magnetoelectronic nanostructures
(Doctoral Theses at NTNU, 1503-8181; 2008:112, Doctoral thesis, 2008)This thesis adresses electric and magnetic noise and dissipation in magnetoelectronic nanostructures. Charge and spin current fluctuations are studied in various nanosized metallic structures consisting of both ferromagnetic ...