Browsing Institutt for kjemi by Title
Now showing items 51-70 of 1353
-
An In-situ FTIR Study of the Methanol to Hydrocarbons Reaction Over Zeolite Catalysts
(Master thesis, 2011)This thesis investigates several different types of zeolites during the conversion of methanol to hydrocarbons, and examines the effects of the differences between them. All samples were characterized by SEM, XRD, ICP-MS ... -
An Orbital Invariant Similarity Constrained Coupled Cluster Model
(Journal article; Peer reviewed, 2019)We present a similarity constrained coupled cluster method able to describe conical intersections between two excited electronic states of the same symmetry. For a given pair of states, this singles and doubles method ... -
Analyse av Røynevannet som mulig reservedrikkevannskilde for Grimstad kommune
(Master thesis, 2018)I denne masteroppgaven er Røynevannet undersøkt, med hensyn på den kjemiske kvaliteten. Hensikten er å undersøke om vannet kan benyttes om reservedrikkevannskilde for Grimstad kommune. Røynevannet er prøvetatt på ulike ... -
Analyse glycol ether and pesticide metabolites in Norwegian children and their potential determinants
(Master thesis, 2022)Ikke-persistente stoffer er mye brukt i forbruksvarer og i miljøet. De finnes i hverdagsprodukter som plastikk, smøremidler, løsningsmidler, og insektsmidler, og eksponering av disse stoffene i lave konsentrasjoner kan ... -
Analysis of Ammonium and Nitrate with Ion Selective Electrodes (ISE) in Recirculating Aquaculture Systems (RAS) and a Test of Ag - TiO2 Nanotube Composite Material as Antifouling Sensor Protection.
(Master thesis, 2018)Keeping salmon farming in closed recirculating systems, the challenge related to salmon lice, escape and leakage of nutrients will be dramatically reduced. A high content of nitrogen species deriving from nutrients and ... -
Analysis of Microarray Data Using Inductive Logic Programming and Ontological Background Information
(Doktoravhandlinger ved NTNU, 1503-8181; 2010:46, Doctoral thesis, 2010)The use of formal logic in chemometric analysis has been sparse. However, there are some problems which are well suited for analysis with inductive logic programming (ILP), a class of machine learning methods based on ... -
Analysis of petroleum oil droplet behavior during a subsea release
(Master thesis, 2022)Under et undervannsutslipp flyter millioner av oljedråper gjennom vannkolonnen og opp mot havoverflaten. Hvordan dråpene oppfører seg når de når overflaten vil avgjøre både oljefilmtykkelsen, emulgeringen og livsløpet til ... -
Analysis of Pretreatment Methods for Bio-based Plastic Production Based on Enzymatic Hydrolysis and Microbial Fermentation
(Bachelor thesis, 2021)Lignocellulose er et biomateriale som eksisterer i større mengder på planeten vår, og vil kunne bli benyttet som et alternativ til fossilt brennsel til produksjon av for eksempel bioplast. Desverre, så er det krevende og ... -
Analysis of Steroidal Compounds in Environmental Samples by Comprehensive Two-dimensional Gas Chromatography Time-of-flight Mass Spectrometry
(Master thesis, 2015)Steroidal compounds, especially human estrogens, have been shown to have an impact on aquatic ecosystems. Investigations at the Viikinmäki wastewater treatment plant in Helsinki revealed presence of these compounds in ... -
Analysis, occurrence and removal efficiencies of organophosphate flame retardants (OPFRs) in sludge undergoing anaerobic digestion followed by diverse thermal treatments
(Peer reviewed; Journal article, 2023)Organophosphate flame retardants (OPFRs) are a complex group of contaminants to deal with in sewage sludge, as currently there is a lack of robust analytical methods to measure them and management strategies to remove them. ... -
Analyzing Complex Reaction Mechanisms Using Path Sampling
(Journal article; Peer reviewed, 2016)We introduce an approach to analyze collective variables regarding their predictive power for a reaction. The method is based on already available path sampling data produced by for instance transition interface sampling ... -
Anilines in acid catalyzed amination with 4-chloro-7H-pyrrolo[2,3-d]pyrimidine
(Master thesis, 2023)Pyrrolopyrimidiner har en omfattende farmakologisk profil og er av stor betydning i mange biologisk aktive forbindelser. Syre-katalysert aminering av slike heterosykliske forbindelser er en velkjent strategi innen syntese ... -
Anleggsvirksomhet og påvirkning på bekkesystemer: En undersøkelse av metallavrenning og speciering i områder rundt nye E6 Oslo-Trondheim
(Master thesis, 2013)Seks vassdrag har blitt studert med tanke på å finne ut hvordan og hvor mye vegarbeid påvirker nærliggende bekkesystemer. Det gjelder Orbekken, Brøhaug og Labbelva med anleggsarbeid og Augla, Lauvåa og Skurdalsåa uten ... -
Anomalous diffusion in systems with concentration-dependent diffusivity: exact solutions and particle simulations
(Journal article; Peer reviewed, 2020)We explore the anomalous diffusion that may arise as a result of a concentration dependent diffusivity. The diffusivity is taken to be a power law in the concentration, and from exact analytical solutions we show that the ... -
Anomalous magnetic transport in ferromagnetic graphene junctions
(Journal article; Peer reviewed, 2011)We investigate magnetotransport in a ferromagnetic-normal-ferromagnetic graphene junction where a gate electrode is attached to the normal segment. It is shown that the charge conductance can be maximal at an antiparallel ... -
Anthropogenic and geogenic mass input of trace elements to moss and natural surface soil in Norway
(Journal article; Peer reviewed, 2018)Data sets for concentrations of up to 22 elements including Pb, Cd, Ag, As, and Hg and several rare earth elements (REEs) in moss and surface soil from all over mainland Norway are analyzed by positive matrix factorization ... -
Anti-inflammatory and antioxidant activities of Sclerochloa dura (Poaceae)
(Journal article; Peer reviewed, 2014)The plant Sclerochloa dura is traditionally used in South-East Serbia to treat menstrual disorders characterized by pain and excessive bleeding. According to subjects’ statements, a reduction in bleeding and pain is ... -
Antitumor effects of selected intermediates in synthesis of unsaturated acyl glucoside. In vitro experiments on cancer cell lines.
(Master thesis, 2019)I forbindelse med et pågående totalsynteseprosjekt ved NTNU ble biologisk evaluering av mellomprodukter og potensielle fettsyresubstituenter som kreftmiddel utført ved MTT-analyse. I tillegg ble syntesen av to nye ... -
Anvendelse av metall-organiske rammeverk for adsorpsjon av kvikksølv fra vann
(Bachelor thesis, 2021)Når kvikksølv slippes ut i miljøet er det persistent, bioakkumulerende og giftig for både mennesker og dyr. Følgelig er utslippet av kvikksølv en pågående utfordring, som har gitt opphav til et mangfold av teknikker og ...