Browsing NTNU Open by Title
Now showing items 68546-68565 of 101157
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Oxidative degradation of triethylene glycol
(Journal article; Peer reviewed, 2024)Triethylene glycol (TEG) is unstable in the presence of oxygen and at high temperatures, though the degradation mechanisms occurring are not properly understood. In attempting to close some of the knowledge gaps, ... -
Oxidative degradation of triethylene glycol
(Peer reviewed; Journal article, 2024)Triethylene glycol (TEG) is unstable in the presence of oxygen and at high temperatures, though the degradation mechanisms occurring are not properly understood. In attempting to close some of the knowledge gaps, ... -
Oxidative Dehydrogenation of Ethane and Propane at Short Contact Time
(Dr. ingeniøravhandling, 0809-103X; 2003:4, Doctoral thesis, 2003)Olefins are important intermediates for many industrial processes and the demand for olefins is forecasted to grow for the next years. One of the promising alternative routes for the production of olefins is oxidative ... -
Oxidative dehydrogenation of ethane at short contact times
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:188, Doctoral thesis, 2008) -
Oxidative Ladle Refining of Metallurgical Grade Silicon: Refining of Ca and Al Impurities
(Doctoral theses at NTNU;2021:277, Doctoral thesis, 2021)English summary Metallurgical grade silicon (MG-Si) is used as an alloying agent, raw material, or as a precursor compound, in the production of aluminum alloys, silicones, photovoltaics, and electronics. Access to ... -
Oxidative Refining of Metallurgical Grade Silicon: Lab-Scale Measurements on the Overarching Refining Behavior of Ca and Al
(Peer reviewed; Journal article, 2022)Oxidative ladle refining (OLR) is the most widely used refining process for removal of dissolved Ca and Al in the industrial production of metallurgical grade silicon (MG-Si). Refining occurs by purging the silicon alloy ... -
Oxidative status and intestinal health of gilthead sea bream (Sparus aurata) juveniles fed diets with different ARA/EPA/DHA ratios
(Peer reviewed; Journal article, 2020)The present work assessed the effects of dietary ratios of essential fatty acids, arachidonic (ARA), eicosapentaenoic (EPA) and docosahexaenoic acid (DHA), on liver and intestine oxidative status, intestinal histomorphology ... -
Oxidative stress and the ischemic heart: A study in patients undergoing coronary revascularization
(Doktoravhandlinger ved NTNU, 1503-8181; 2005:198, Doctoral thesis, 2004)The isoprostane 8-iso-PGF2α proved to be a valuable marker of conditions associated with oxidative stress in all three clinical studies (I-III). Somewhat surprising, no significant correlation with myocardial reperfusion ... -
Oxidative stress responses in liver of A/J mice fed an environmentally relevant mixture of perfluoroalkyl substances (PFASs)
(Master thesis, 2021)Recently, the adverse effects of perfluoroalkyl substances (PFASs), have been in the spotlight of several studies. Besides the known tumour inducing and endocrine disrupting characteristics of these chemicals, there has ... -
Oxide Hydrogen Interaction and Porosity Development in Al-Si Foundry Alloys
(Master thesis, 2011)The oxide level of an A356 aluminium alloy will be controlled by (i) melting, casting and remelting A356 aluminium alloy for increasing the bi-films levels in the melt, and by (ii) additions of an extruded aluminium oxide ... -
Oxide Sensor Measurements and Simultaneous Optical Observations During Dissolution of Alumina in Cryolite Melt
(Journal article; Peer reviewed, 2022) -
Oxide – organic heterostructures: a case study of charge displacement absence at a SnO2 – copper phthalocyanine buried interface
(Journal article; Peer reviewed, 2018)Reduced tin dioxide/copper phthalocyanine (SnOx/CuPc) heterojunctions recently gained much attention in hybrid electronics due to their defect structure, allowing tuning of the electronic properties at the interface towards ... -
OXR1A, a Coactivator of PRMT5 Regulating Histone Arginine Methylation
(Peer reviewed; Journal article, 2020)Oxidation resistance gene 1 (OXR1) protects cells against oxidative stress. We find that male mice with brain-specific isoform A knockout (Oxr1A−/−) develop fatty liver. RNA sequencing of male Oxr1A−/− liver indicates ... -
Oxy-combustion coal based power plants with CO2 capture: Process integration approach to reduce capture penalty
(Doctoral thesis at NTNU;2015:34, Doctoral thesis, 2015)This thesis presents studies on coal based power plants with CO2 capture. As coal is the single largest fuel in use today to generate electricity, technologies to improve the efficiency and reduce emissions are critical ... -
Oxy-combustion coal based power plants: study of operating pressure, oxygen purity and downstream purification parameters
(Journal article; Peer reviewed, 2014)Oxy-combustion coal based power plants are considered one of the cost effective ways to produce CO2 emission free electricity. Recovery of compression heat and the latent heat from the flue gases can further improve the ... -
Oxycodone, Morphine, and Fentanyl in Patients with Chronic Pain: Proposal of Dose-Specific Concentration Ranges
(Peer reviewed; Journal article, 2023)Background: Interpreting opioid concentrations is challenging because of the lack of reference ranges. Therefore, the authors aimed to propose dose-specific concentration ranges in serum for oxycodone, morphine, and ... -
Oxygen absorption in hexagonal manganites
(Doctoral theses at NTNU;2023:192, Doctoral thesis, 2023)Oxygen is one of the worlds most used chemicals, with over 100 million tons of pure O2 being used for industrial and medical purposes each year. The demand for O2 is high, and expected to rise even further due to its ... -
Oxygen Absorption in Nanocrystalline h-RMnO<inf>3</inf> (R = Y, Ho, Dy) and the Effect of Ti Donor Doping
(Journal article; Peer reviewed, 2023) -
Oxygen and related defects in Czochralski silicon crowns
(Master thesis, 2014)For the purpose of this thesis work, four n-type CZ silicon ingots with different crown tapered angle and shouldering area were characterized in order to understand the oxygen behavior and related defects on ingot top cuts ... -
Oxygen and temperature effect on formation of degradation compounds from MEA
(Journal article; Peer reviewed, 2014)Liquid phase degradation of MEA and the formation of 8 degradation compounds were studied at 4 different oxygen concentrations and three different temperatures. Liquid phase total nitrogen was determined and compared with ...