Blar i Fakultet for naturvitenskap (NV) på tittel
Viser treff 6205-6224 av 12759
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Investigation of interfacial tension of surfactant in low salinity water for enhanced oil recovery application
(Master thesis, 2013)Surfactant flooding is known as a very good method to improve oil recovery. Many experimental studies in laboratories have shown the effectiveness of this method to increase the percentage of oil coming up from the core ? ... -
Investigation of loss of surfactants during enhanced oil recovery applications - adsorption of surfactants onto clay materials
(Master thesis, 2013)Chemical flooding, or surfactant flooding, is a well known EOR technique which has been used worldwide for decades. For this method to be economically feasible, it is crucial to minimize the loss of surfactant to the ... -
Investigation of Low Temperature Toughness and Crack Initiation In Welded Structural Steels
(Master thesis, 2014)A 420 MPa HSLA steel has been investigated. Instrumented Charpy impact tests and quasi-static CTOD tests have been performed on specimens of weld simulated Coarse Grained Heat Affected Zone (CGHAZ) and Intercritically ... -
Investigation of Macrosegregation Formation in Aluminium DC Casting for Different Alloy Systems
(Journal article, 2018)Direct chill (DC) casting of aluminum involves alloys employing different solute elements. In this article, a qualitative analysis and comparison of macrosegregation formation is presented for three different alloy systems: ... -
Investigation of metal dusting corrosion process over UNS N08800 alloy
(Journal article; Peer reviewed, 2017)Metal dusting corrosion is a catastrophic degradation phenomenon that initiates on metallic surfaces of chemical process equipment at elevated temperature and under carburizing atmospheres. It proceeds by a gradual breakdown ... -
Investigation of metallic bipolar plates for PEM fuel cells
(Master thesis, 2011)High cost and a short lifetime are the two main reasons why the PEM fuel cell is yet to be commercialized. The bipolar plate in a PEM fuel cell is alone responsible for about 45% of the cost and 85% of the total weight of ... -
Investigation of Methods for 2D Strain Imaging of Brain Tumors
(Master thesis, 2014)Intraoperative ultrasound strain imaging displays brain tissue stiffness rather than difference in mass density as regular B-mode imaging. A glioma (the most common type of brain tumor) has a tendency of infiltrating ... -
Investigation of Neural Network Auto Encoders as Means of Initialisation
(Master thesis, 2021)Initialisering av vekter i kunstige nevrale nettverk har fått mye oppmerksomhet i litteratur. Det kan ha en signifikant effekt på konvergensrate, varians, generalisering og ytelse. Til tross for dets viktighet, er ... -
Investigation of new polymeric membranes with controlled architecture for CO2 capture
(Master thesis, 2011)This paper discusses various characteristics of new polymeric membranes for the purpose of CO2 capture. Different types of single and copolymers were examined; especially by the sorption measurement at different pressures ... -
Investigation of New Polymeric Membranes with Controlled Architecture for CO2 Capture
(Master thesis, 2012)The capture of CO2 is of high interest in a society concerned by climate change and consequently by greenhouse gas emissions. If the amine absorption or hot potassium scrubbing are widely used, several membrane processes ... -
Investigation of Novel Dopant Materials for Enhancing Hole Transport Layer Efficiency in Organic Photovoltaics
(Master thesis, 2024)Denne avhandlingen går dypt inn i studiet av hulltransportlag (HTLs) innen organiske fotovoltaikk (OPVs), med mål om å forbedre både effektiviteten og stabiliteten til disse bærekraftige energisystemene. Forskningsmetodikken ... -
Investigation of Pilin Function in the Cyanobacterium Synechocystis sp. PCC 6803
(Master thesis, 2014)The aim of this project was to investigate the involvement of a specific operon from Synechocystis sp. PCC 6803 (hereafter Synechocystis 6803) in iron acquisition. The operon selected consists of the four genes, slr1928, ... -
Investigation of pinholes in Czochralski silicon ingots in relation to structure loss
(Journal article; Peer reviewed, 2019)In the production of monocrystalline silicon by the Czochralski process, structure loss frequently reduces yield and increases production time. Structure loss means the transition from monocrystalline to multicrystalline ... -
Investigation of polycyclic aromatic hydrocarbons (PAH) absorption from seawater to model microplastic particles
(Master thesis, 2018)Se vedlegg -
Investigation of protection group exchange in late stage intermediates in the synthesis of 3-O-acylsulfoquinovosyl glycerols
(Master thesis, 2021)Arbeidet presentert i denne masteroppgaven ble utført som en del av et forskningsprosjekt hvor målet er å totalsyntetisere 3-O-acylsulfokinovosyl glyseroler, basert på et naturlig stoff ekstrahert fra Schlerochloa dura. ... -
Investigation of Protein Biomarkers in Nasal Lavage Fluid in Patients with Chronic Fatigue and Healthy Controls
(Bachelor thesis, 2024)Kronisk utmattelsessyndrom (CFS) er preget av utmattelse som varer i mer enn seks måneder uten å være knyttet til andre underliggende lidelser, og diagnostiseres ved utelukkelse. Diagnostiseringsprosessen er tidkrevende ... -
Investigation of Pyrrolo- and Furopyrimidines as Epidermal Growth Factor Receptor Tyrosine Kinase Inhibitors: Synthesis and Activity-ADME Profile
(Doctoral theses at NTNU;2016:351, Doctoral thesis, 2016)Summary of thesis: Due to their essential roles in signal transduction and regulation of cellular processes, kinases have been established as promising drug targets for the treatment of various human diseases. Since ... -
Investigation of Raman scattering phenomena in the development of mid-IR ultra-short laser pulses
(Master thesis, 2015)In this thesis both a raman spectrometer and a dispersion measurement setup for fibers was designed, built and automatized. Furthermore several nonlinear phenomena were researched and with two different approaches simulated. ... -
Investigation of Routes for Improving the Rate Capability of Electrodes in Li-ion Batteries
(Master thesis, 2014)Lithium-ion battery, first introduced to market in 1991 by Sony, is today one of the most popular battery technologies in the world. The development of Li-ion battery applications from portable electronic devices to electric ... -
Investigation of selected natural and anthropogenic radionuclides in reindeer (Rangifer tarandus tarandus) and lynx (Lynx lynx)
(Doktoravhandlinger ved NTNU, 1503-8181; 2005:151, Doctoral thesis, 2005)The present thesis investigates a range of dietary, physiological and environmental factors influencing transfer and long-term behaviour of radionuclides in reindeer and lynx. Feeding experiments were designed to provide ...