Browsing Institutt for kjemi by Title
Now showing items 808-827 of 1405
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Occurrence of legacy and novel Per- and Polyfluoroalkyl Substances (PFAS) in plastics, e-waste plastics and mobile phone waste
(Master thesis, 2021)Abstract will be available on 2024-07-01 -
Occurrence of novel and legacy Per- and polyfluoroalkyl substances (PFAS) in selected aqueous and environmental matrices.
(Master thesis, 2021)Abstract will be available on 2024-07-01 -
Occurrence of organophosphate flame retardants (OPFRs) in baby foodstuffs
(Master thesis, 2021) -
Occurrence of Phthalate metabolites in shellfish from China
(Master thesis, 2022)Abstract will be available on 2025-06-30 -
Oil spill forensics - Identification of possible sources for oil spills found along the coastline of mid-Norway - An experimental study combining GC-MS analysis and multivariate statistics.
(Master thesis, 2016)This thesis aims to characterize 112 weathered oil samples collected on shore, at 18 islands, along the coastline of Mid-Norway during a time period of 2011-2015. Emphasis have been made on characterizing samples by three ... -
Oil spill forensics - Identification of Sources for Illegal Oil Spills. A New Approach Combining Multivariate Statistics and Gas Chromatography and Mass-Spectrometry (GC-MS)
(Master thesis, 2016)The CEN/TR 15522-2:2012 standard is most widely used in Europe for oil spill fingerprinting purposes, which is based on comparison of specific source biomarkers by GC MS. This thesis was mainly aimed at establishing and ... -
Oil Spill Forensics, investigating oil spill samples with GC-MS data with multivariate statistics and assessing the practical aspects of the free open source software R.
(Master thesis, 2022)Dette arbeidet er utført på tidligere innsamlede data, med innføring av nye prøver hentet fra SINTEF's råoljelager. Dette antas å gi et bredt spekter av vitrede og uvitrede oljeprøver for å gi et variert utvalg av prøver ... -
Oil spill forensics: Identification of sources for oil spills by using data generated by GC-MS and ICP-MS combined with multivariate statistics and the COSIWeb database
(Master thesis, 2014)This work has been a preliminary study, aimed at investigating whether or not trace metal Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) analysis could be a viable tool in the oil spill investigation toolbox, after ... -
OLIA: An open-source digital lock-in amplifier
(Peer reviewed; Journal article, 2023)The Open Lock-In Amplifier (OLIA) is a microcontroller-based digital lock-in amplifier built from a small number of inexpensive and easily sourced electronic components. Despite its small credit card-sized form-factor and ... -
On exergy analysis and entropy production minimisation in industrial ecology
(Doktoravhandlinger ved NTNU, 1503-8181; 2006:151, Doctoral thesis, 2006)The objective of this thesis is to improve the basis for applying industrial ecology to the evaluation of material and energy resource use and transformation in industrial systems. The underlying hypothesis was that when ... -
On the characteristic features of ionization in QED environments
(Peer reviewed; Journal article, 2022)The ionization of molecular systems is important in many chemical processes, such as electron transfer and hot electron injection. Strong coupling between molecules and quantized fields (e.g., inside optical cavities) ... -
On the electrokinetic characterization of charged polymeric membranes by transversal streaming potential
(Peer reviewed; Journal article, 2021)The effect of a transmembrane pressure on the electrokinetic properties of different polymeric charged membranes is analysed. Electrokinetic characterization can involve the application of increasing or decreasing pressure ... -
On the relation between the Langmuir and thermodynamic flux equations
(Journal article; Peer reviewed, 2014-01-22)Despite its approximative nature, the Langmuir theory has shown to be a very successful approach to describe experimental adsorption isotherms. Langmuir kinetics is based on systems of non-interacting particles that can ... -
On the value of popular crystallographic databases for machine learning prediction of space groups
(Peer reviewed; Journal article, 2022)Predicting crystal structure information is a challenging problem in materials science that clearly benefits from artificial intelligence approaches. The leading strategies in machine learning are notoriously data-hungry ... -
One-dimensional mathematical modeling of two-phase ejectors: Extension to mixtures and mapping of the local exergy destruction
(Peer reviewed; Journal article, 2022)The ejector is a process equipment frequently used in refrigeration processes. There is currently a knowledge gap on the efficiency of ejectors operating with mixtures. To address this knowledge gap, we present a one-dimensional ... -
One-pot Conversion of Biomass to Ethylene Glycol, Propylene Glycol and other Polyols over Carbon Supported Tungsten Catalysts
(Master thesis, 2013)Tungsten carbide and nickel promoted tungsten oxide catalysts supported on CNTs and AC were prepared for the catalytic conversion of cellulose towards polyols, particularly EG. Incipient wetness impregnation was used for ... -
Onsager-symmetry obeyed in athermal mesoscopic systems: Two-phase flow in porous media
(Peer reviewed; Journal article, 2020)We compute the fluid flow time correlation functions of incompressible, immiscible two-phase flow in porous media using a 2D network model. Given a properly chosen representative elementary volume, the flow rate distributions ... -
An Open Access Data Set Highlighting Aggregation of Dyes on Metal Oxides
(Peer reviewed; Journal article, 2020)The adsorption of a dye to a metal oxide surface such as TiO2, NiO and ZnO leads to deprotonation and often undesirable aggregation of dye molecules, which in turn impacts the photophysical properties of the dye. While ... -
OPFRs in e-waste plastic: problems and solutions in the circular economy
(Bachelor thesis, 2023)Etter ulike forbud og restriksjoner på flere bromerte flammehemmere (BFR) på grunn av deres giftige og persistente egenskaper, har bruken av de alternative fosfororganiske flammehemmerne (OPFR) økt betraktelig. OPFRer ble ... -
Optical rotation from coupled cluster and density functional theories
(Doctoral theses at NTNU; 2018:31, Doctoral thesis, 2018)Chiral compounds are of fundamental importance in medical chemistry, biochemistry, and industry. Optical rotation, which is one of the most well-known optical responses of chiral molecules to an electromagnetic field, is ...