Browsing NTNU Open by Document Types "Doctoral thesis"
Now showing items 1-20 of 6798
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1-D phenomenological modelling of gas-solid fluidized bed reactors for chemical looping reforming
(Doctoral theses at NTNU;2018:9, Doctoral thesis, 2018)This PhD thesis is a part of the EU FP7 Project called NanoSim. The main objective of this work is to develop a 1-D phenomenological model for fluidized bed reactors to simulate the performance of second-generation CO2 ... -
A 12-month follow-up of patients with fragility hip fracture: Mortality, readmission, and cost related to conventional and standardised hospital care Charlson Comorbidity Index Score and ASA as predictors of mortality
(Doctoral theses at NTNU;2021:222, Doctoral thesis, 2021) -
13C NMRS of animal models of schizophrenia
(Doktoravhandlinger ved NTNU, 1503-8181; 2009:217, Doctoral thesis, 2009)Altered brain metabolism is implicated in several brain disorders such as schizophrenia. Insights into underlying mechanisms and how they are altered could help find new treatment strategies. Animal models serve as tools ... -
2D and 3D echocardiography during inotropic alterations and after recent myocardial infarction
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:378, Doctoral thesis, 2012)Vurdering av venstre ventrikkels størrelse og funksjon er helt sentral ved enhver ekkokardiografisk undersøkelse og den vanligste kliniske indikasjon for å utføre ultralyd av hjertet. I dette prosjektet ble hjertefunksjonen ... -
3-D Doppler imaging in cardiac applications using high frame-rate sequences
(Doctoral theses at NTNU;2020:60, Doctoral thesis, 2020)Several decades after the establishment of Doppler ultrasound, quantification and imaging of blood flow using Doppler-based techniques continue to face multiple challenges. Out-of-plane flow, transit-time broadening and ... -
3D carbon/polyaniline nanostructures for energy storage
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:215, Doctoral thesis, 2011)Among various types of electrical energy storage devices, supercapacitors (high power but low energy) and batteries (high energy but low power) are extensively studied. Present work aims to develop an electrode material ... -
3D Cohesive Modelling of Hydrogen Embrittlement in the Heat Affected Zone of X70 Steel
(Doktoravhandlinger ved NTNU, 1503-8181; 2014:53, Doctoral thesis, 2014) -
3D Numerical Modelling of Non-Linear and Breaking Wave Forces On Offshore Wind Turbine Substructures
(Doctoral theses at NTNU;2019:66, Doctoral thesis, 2019)Offshore wind energy technology has experienced a remarkable growth in the last few decades due to an increasing focus towards renewable energy research. The objective of the research towards offshore wind energy is to ... -
3D ultrasound and navigation – Applications in laparoscopic surgery
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:52, Doctoral thesis, 2011)The use of intraoperative navigation during surgery is becoming a valuable tool in several clinical applications. Often only preoperative images are used during navigation and changes that occur during surgery are hence ... -
3D ultrasound based neuronavigation in neurosurgery: A Clinical Evaluation
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:295, Doctoral thesis, 2008) Background and objectives: Intraoperative ultrasound has been used for decades in neurosurgery for localization and characterization of pathology, particularly tumors. Furthermore, with Doppler imaging ... -
3D Ultrasound for Quantitative Echocardiography
(Doctoral Theses at NTNU, 1503-8181; 2009:135, Doctoral thesis, 2009)Medical ultrasound imaging is widely used to diagnose cardiacdiseases. The recent availability of real time 3D ultrasound posesseveral interesting challenges and opportunities, and the work of thisthesis is devoted to both ... -
4D ultrasound vector flow imaging for intraventricular flow assessment
(Doctoral theses at NTNU;2019:38, Doctoral thesis, 2019)4D ultralyd vector flow avbildning for evaluering av blodstrøm i hjertet Ultralyd er den mest utbredte modaliteten for evaluering av hjertefunksjon grunnet tilgjengelighet, lav kostnad og sanntidsvisning. Ekkokardiografi ... -
4d/5d Transition Metals in Perovskite Cathode Materials
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:131, Doctoral thesis, 2013)Solid oxide fuel cells (SOFCs) have the potential to convert chemical energy to electrical energy in an efficient and environmentally friendly manner. The high operational temperatures of the first generation of SOFCs ... -
A 7-field Lagrangian slug capturing and slug tracking model with higher order methods
(Doctoral theses at NTNU;2017:246, Doctoral thesis, 2017)In this thesis, a 7-field Lagrangian slug capturing and slug tracking model with higher order methods and an adaptive grid is investigated for predicting the behaviour of two-phase gasliquid flow in multiphase flow pipelines. ... -
A Bayesian Inversion Approach to Filtering and Decision Making with Applications to Reservoir Characterization
(Doctoral Theses at NTNU, 1503-8181; 2013:275, Doctoral thesis, 2013)The main objectives of this thesis are the estimation/filtering and decision making problems with a Bayesian inversion point of view, and in geophysical systems. In addition, determining the information content in the ... -
A biophysical study of oscillatory water regulation in plants : measurements and models
(Doctoral thesis, 2001)In this thesis, several aspects of the water regulation of plants will be studied and discussed. The focus is on biophysical properties of the system, especially on the dynamics and qualitative mechanistics. Following this ... -
A bottom-fixed lattice tower for offshore wind turbines
(Doktoravhandlinger ved NTNU, 1503-8181; 2014:160, Doctoral thesis, 2014)Wind turbines have been sited away from coasts in the last decade to exploit the tremendous potential of wind energy on the vast oceans, especially in Northern Europe where there is relatively limited space on land and ... -
A Boundary Element Method Applied to Strongly Nonlinear Wave-Body Interaction Problems
(Doktoravhandlinger ved NTNU, 1503-8181; 2007:141, Doctoral thesis, 2007)A two-dimensional Boundary Element Method (BEM) based on potential flow theory is developed to study wave-body interaction problems with strongly nonlinear effects. In particular, the following problems are studied. One ... -
A case study of multiple media use and multicommunicating in a Fortune 500 company: Practices, paradoxes and research challenges
(Doctoral thesis at NTNU;2015:11, Doctoral thesis, 2015)This thesis aimed to explore multiple media use and multicommunication, including the patterns and consequences of such use, and the implications related to the study of such use methodologically. Three main shortcomings ... -
A classification method for scaling river biotopes for assessing hydropower regulation impacts
(Doktoravhandlinger ved NTNU, 1503-8181; 2005:140, Doctoral thesis, 2005)This thesis describes the development of a habitat assessment methodology based on theories of hydroecology for use in river basin management. The methodology includes a robust habitat classification system and provides ...