Browsing NTNU Open by Title
Now showing items 89554-89573 of 105673
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Study of Pattern Search Optimization and Implementation of Hooke-Jeeves Direct Search for Production Optimization using Perforations
(Master thesis, 2016)This thesis concerns the topic of petroleum production optimization using perforations. A plug-in by PhD student Einar Baumann was extended to include a second pattern search method: Hooke-Jeeves direct search. Originally ... -
Study of Piezoelectric and Mechanical Properties of Porous Barium Titanate Ceramics for Biomedical Applications
(Master thesis, 2017)Throughout the last decades, the development of bioactive materials to be used as bone implants has been a very active research area. The number of surgeries related to bone implants are steadily increasing, such that ... -
Study of Pilot-scale Filtration at Minneapolis Water Works
(Master thesis, 2014)Minneapolis Water Works (MWW) in Minnesota, United States, have experienced occasional taste and odor episodes with their river water source. This thesis investigates the potential benefits of installing granular activated ... -
The study of plasticized sodium ion conducting polymer blend electrolyte membranes based on chitosan/dextran biopolymers: Ion transport, structural, morphological and potential stability
(Peer reviewed; Journal article, 2021)The polymer electrolyte system of chitosan/dextran-NaTf with various glycerol concentrations is prepared in this study. The electrical impedance spectroscopy (EIS) study shows that the addition of glycerol increases the ... -
STUDY OF POTENTIAL GALLOPING MOTIONS OF PIGGYBACK PIPELINE GEOMETRIES IN STRONG CURRENTS
(Master thesis, 2011)This thesis entails an experimental work that tries to investigate the effects of different diameter ratios and the angle of attack of steady flow on the piggyback cylinders arranged normal to the flow. Three different ... -
Study of pressure pulsations in a Francis turbine designed for frequent start-stop
(Journal article, 2021)The energy market aims for high flexibility that allows guaranteed power to the consumers with minimum carbon footprint. Over the last three decades, hydropower has been a reliable and an efficient option to meet the ... -
A study of proximity-induced and magnon-mediated superconductivity on the surface of topological insulators
(Doctoral theses at NTNU;2021:40, Doctoral thesis, 2020)Summary: This thesis presents a study of superconducting phases in different effectively two-dimensional (2D) systems with spin-orbit coupling, with particular emphasis on systems consisting topological insulators (TIs) ... -
Study of rail potential and earth current for the BTRC and AT systems
(Master thesis, 2023)Denne oppgaven studerte AC forsyningssystemer i Norge og sammenlignet BTRC- og AT-systemene. Spesifikt ble skinnepotensialet og strømmen i jordsmonnet i returkretsen studert siden disse kan være farlige for mennesker eller ... -
Study of Rat Olfactory Ensheathing Cells in Alginate based Matrices
(Master thesis, 2012)Alginate hydrogel made from alginate and crosslinking divalent ions is a natural biomaterial that is biocompatible, has low toxicity, is relatively cheap and has mild gelation chemistry. It is a porous material that allows ... -
Study of Satellite and GroundUV Index: Climatology andEffects of GeophysicalParameters
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:177, Doctoral thesis, 2012)This thesis presents UV index (UVI) comparison between the AURA-OMI satellite and ground measurements using Norwegian and Nepalese UV Network data for the coincident measurements (Paper I and III). Influencing parameters ... -
Study of Second Generation Biofuels in Internal Combustion Engines
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:45, Doctoral thesis, 2012)The search for alternative fuels to replace the existing petroleum-based products has intensified. Fossil fuels are non-renewable and the uncertainty in oil prices puts a strain on several national economies. In addition, ... -
Study of sediment erosion in guide vanes of Francis turbine
(Master thesis, 2016)The Himalayas and the Andes mountains are regions with some of the worlds biggest hydropower potential. One of the biggest problems facing the development of these resources are high concentrations of hard minerals in the ... -
Study of Sediment Erosion in Guide Vanes of Francis Turbine - Studier av sedimenter erosjon i ledeskovler av Francis turbin
(Master thesis, 2015)Sediment erosion wear of Francis turbines is a big problem for power plants near the Himalayas and the Andes Mountains. The turbine components must be maintained often, resulting in reduction of power production and high ... -
Study of snow pressure and creep on new support structures located on the Sukkertoppen slope, in Svalbard, Norway
(Master thesis, 2022)Avalanches er en økende bekymring i Longyearbyen, noe som har ført til utvidelse av felt for prognoser og sanering. Snøstøttestrukturer må tåle belastningene som er skapt av den skrå snøsekken. Den høye arktiske byen er ... -
Study of snow, supraglacial debris and particulate matter released from the glacier systems of Austre Brøggerbreen and Vestre Brøggerbreen at Ny-Ålesund, Svalbard
(Master thesis, 2023)Som et resultat av klimaendringer har Arktis opplev økte temperaturer. En av de mest drastiske trendene har blitt observert på Austre Brøggerbreen i Ny-Ålesundsområdet. Ulike partikulære materiale som kryokonitt, supraglasiale ... -
A study of socio‑economic inequalities in self‑reported oral and general health in South‑East Norway
(Peer reviewed; Journal article, 2022)This study assesses the association between socioeconomic determinants and self-reported health using data from a regional Norwegian health survey. We included 9,068 participants ≥ 25 years. Survey data were linked to ... -
Study of Software reuse at Skattedirektoratet
(Master thesis, 2008)This master thesis is a case study on software reuse within a subset of systems at the Norwegian Directorate of Taxes, Skattedirektoratet (SKD). The systems chosen for our research are the GLD systems; legacy systems which ... -
Study of Solvent Extraction for Metal Recovery during Lithium-Ion Batteries (LIBs) Recycling Process
(Master thesis, 2021)Nowadays, the demand for electric vehicles (EVs) is rising, leading to an increase in the production of lithium-ion batteries (LIBs) since these batteries are used in EVs. A large number of Ni, Mn, Co, and Li resources are ...