Institutt for kjemi: Nye registreringer
Viser treff 101-120 av 1383
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A simplified pore-scale model for slow drainage including film-flow effects
(Peer reviewed; Journal article, 2023)Liquid-filled corners and capillary bridges can establish networks connecting seemingly isolated clusters during drainage in porous media. Coupled with drainage through the bulk of pores and throats, the flow through these ... -
Nanoparticle Dynamics in Composite Hydrogels Exposed to Low-Frequency Focused Ultrasound
(Peer reviewed; Journal article, 2023)Pulsed focused ultrasound (FUS) in combination with microbubbles has been shown to improve delivery and penetration of nanoparticles in tumors. To understand the mechanisms behind this treatment, it is important to evaluate ... -
Seasonal biogeochemical cycling of mercury on the Arctic Ocean shelf
(Doctoral theses at NTNU;2023:286, Doctoral thesis, 2023)The toxic pollutant mercury accumulates in marine food webs on a global scale, with consumption of seafood as the primary exposure pathway for humans. Since 2017, the Minamata Convention on Mercury has aimed to reduce human ... -
Synthesis, identification, chiral separation and crystal structure of (3R,4R,7S,8S)-3,4,7,8-tetrachlorodecane and its stereoisomers
(Peer reviewed; Journal article, 2023)Chlorinated paraffins (CPs) are a notoriously known class of compounds that stand amongst the most wide-spread persistent organic pollutants. Therefore, their reliable, repeatable, and reproducible quantitative analysis ... -
Strong Coupling in Chiral Cavities: Nonperturbative Framework for Enantiomer Discrimination
(Peer reviewed; Journal article, 2023)The development of efficient techniques to distinguish mirror images of chiral molecules (enantiomers) is very important in both chemistry and physics. Enantiomers share most molecular properties except, for instance, the ... -
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 ... -
Examining Oxidized Mn and Fe as Adsorbents of Hg and Pb in Seawater: An Incubation Experiment
(Master thesis, 2023)Kunnskap om hvordan Hg og Pb sirkulerer i det marine miljøet er viktig fordi de er toksiske for marint liv. Forskning tyder på at redokssensitive elementer som Mn og Fe tar en viktig del i disse syklusene. Mn og Fe danner ... -
Chemoenzymatic Protocol for the Synthesis of Enantiopure β-Blocker (S)-Bisoprolol
(Peer reviewed; Journal article, 2023)The β-blocker (S)-bisoprolol hemifumarate has been synthesised in 96% enantiomeric excess with 19% total yield in a six-step synthesis. A transesterification reaction of the racemic chlorohydrin 1-chloro-3-(4-((2-isoprop ... -
Local pollution sources in Ny-Ålesund. Follow-up study of booster impact area in Brøggerdalen, and new study of leaching pollutants from Kolhaugen
(Master thesis, 2023)Langtransportert forurenset luft til Arktis er et velldokumentert fenomen siden oppmerksomhet rundt persistente organiske miljøgifter økte på midten av 1900-tallet. Effekten av lokale, menneskeskapte forurensning i Arktisk ... -
Evaluation of Biochar Produced from the Thermal Treatment of Organic Waste to Decrease the Mobility and Bioavailability of PFAS
(Master thesis, 2023)Per- and polyfluoroalkyl substances (PFAS), commonly referred to as "Forever chemicals," are characterized by their enduring persistence and wide distribution due to their chemical properties and extensive usage. Elevated ... -
Microplastic Pollution in the Volta River Delta’s Blue Carbon Mangrove Ecosystem in Ghana
(Master thesis, 2023)Denne oppgaven har tatt del i BC5 og Sailing 4 Science. BC5 eller "Building Capacity to Crosslink Coastal Pollution with Climate Change" er et prosjekt finansert av Norad under programmet "Climate change and Natural ... -
Computational modeling of the molecular basis for the calcium-dependence of the mannuronan C-5 epimerase AvAlgE6 from Azotobacter vinelandii
(Peer reviewed; Journal article, 2023)The mannuronan C-5 epimerases catalyze epimerization of β-d-mannuronic acid to α-l-guluronic acid in alginate polymers. The seven extracellular Azotobacter vinelandii epimerases (AvAlgE1–7) are calcium-dependent, and calcium ... -
Optimalization of a self-healing graphene-polyurethane system
(Master thesis, 2023)En diolfunksjonalisert maleimid 1-(2,3-dihydroksypropyl)-1H-pyrrol-2,5-dion 3 ble fremstilt gjennom en tre-trinns syntese fra maleinsyreanhydrid via en Diels-Alder-beskyttelse, en kondensasjonsreaksjon og en avbeskyttelse ... -
Separation and Characterization of Byproducts from Iodixanol Synthesis by HPLC-UV, LC-MS and UPLC-MS
(Master thesis, 2023)Dimeren iodixanol er et virkestoff i kontrastmiddel og et av hovedproduktene til GE HealthCare Lindesnes. Noen biprodukter fra iodixanolproduksjon er ikke identifisert, selv om de blir kvantifisert for hver batch. Disse ... -
Per- and Polyfluoroalkyl Substances in Liver and Muscle Tissue of Frogs from Greek Wetlands
(Master thesis, 2023)Per- og polyfluorerte stoffer (PFAS) er eksempler på menneskeskapte, persistente organiske miljøgifter (POP). PFAS er alifatiske forbindelser hvor hydrogenene har blitt helt eller delvis byttet ut med fluor. Den sterke ... -
Method Development and Analysis of Sulfonated Fatty Acids Chain Distribution and Isomers
(Master thesis, 2023)Sulfonerte fettsyrer, SFA, er en type overflateaktive stoffer som ble undersøkt på 1950-, 60- og 70-tallet. Selv om forskningen lenge sto stille, har etterspørselen etter mer miljøvennlige produkter gjort SFA til en del ... -
Non-target Screening of Emerging Organic Pollutants in Siberian Sediments
(Master thesis, 2023)Til tross for sin avsidesliggende beliggenhet, er Arktis i økende grad truet av forurensning, særlig fra kjemisk avrenning. I lys av dette undersøker denne studien både målrettede og ikke-målrettede analytiske metoder, og ... -
Kartlegging og studie av metallavrenning til Gaula, Holtålen kommune. Påvirkning fra Killingdal gruve med sulfidholdig bergmateriale.
(Master thesis, 2023)Gaula er en elv som starter i Holtålen kommune, og strekker seg 150 km frem til Trondheimsfjorden. Langs elven foregår laksefiske, samt jordbruksproduksjon hvor vannet fra Gaula brukes. Ved Gaula i Holtålen kommune befinner ... -
Occurrence of bisphenols and benzophenones in mussels and fish in Algoa Bay, South Africa
(Master thesis, 2023)Endokrine forstyrrende kjemikaler (EDCs) er framvoksende miljøgifter, og deres skjebne i miljøet og potensielle skadevirkninger på menneskers helse og dyreliv er ikke godt undersøkt. Bisfenoler (Bps) og benzofenoner (BzPs) ... -
Assessing the occurence of bisphenols and benzophenones in recirculating aquaculture systems in Norway
(Master thesis, 2023)De siste årene har landbaserte resirkulerende akvakultursystemer (RAS) blitt utviklet i håp om å møte utfordringer med sjøbaserte akvakulturanlegg. Vannet som brukes i RAS renses og resirkuleres. Dette kan by på nye ...