Institutt for kjemi: Nye registreringer
Viser treff 181-200 av 1395
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How are popragylamines synthesised, how has the synthesis become greener and what are they used for?
(Bachelor thesis, 2023)Ulike syntese metoder for dannelse av propargylaminer har blitt analysert og metodene har blitt satt i tidsperspektiv. Det er to hoved typer måter propargylaminer kan bli dannet på. Først ved å substituere en funksjonell ... -
Selective Functionalization of Glucose
(Bachelor thesis, 2023)I denne teksten vil vi skrive og diskutere om emnet selektivt funksjonaliserende glukose. Inkludert ulike metoder for å oppnå selektiv funksjonalisering og effektene det kan ha på forbindelsen. Glukose er et molekyl som ... -
Comparison of the catalytic potential of ionic liquids and heterogeneous metallic catalysts to prepare cyclic carbonates from carbon dioxide and epoxides
(Bachelor thesis, 2023)Fiksering av CO2 for å produsere nyttige kjemikalier har blitt studert lenge. Spesielt syntesen av sykliske karbonater fra CO2 og epoksider har blitt utforsket. Denne raporten har foksuert på to forskjellige katalysatorer ... -
Phthalates in wastewater
(Bachelor thesis, 2023)Mens vann dekker meste parten av jordens overflate er kun en liten del av dette tilgjengelig for menneskelig aktiviteter. Denne andelen minsker med vår økende populasjon og den enorme mengden avfall produsert årlig. En av ... -
Hartree-Fock and Density Functional Theory methods used for Molecular Geometry Optimization
(Bachelor thesis, 2023)I denne oppgaven undersøkes Hartree-Fock og tetthetsfunksjonal teori (DFT) for bruk i geometrioptimalisering. Teorien bak Hartree-Fock og DFT er beskrevet grundig, og et uttrykk for molekylær gradient er utledet for ... -
Sammenligning av metoder for syntese av d-threo-metylfenidat hydroklorid
(Bachelor thesis, 2023)Etterspørselen etter ADHD-medisin er stadig økende, og det er derfor et behov for å effektivt produsere virkestoffet d-threo-metylfenidat hydroklorid. I denne oppgaven blir tre synteser av d-threo-metylfenidat hydroklorid ... -
Reducing Palladium leaching in the Suzuki-Miyaura cross-coupling reaction with two magnetic nanoparticle catalysts
(Bachelor thesis, 2023)Denne bacheloroppgaven er en litteraturgjennomgang av Pd-lekkasje i Suzuki-Miyaura reaksjonen (SMC) med to heterogene og magnetiske katalysatorer, katalysator 1 og 2, som var utviklet av Wang et al. Forfatterne målte ... -
Influence of grain size, organic carbon and organic matter residue content on the sorption of per- and polyfluoroalkyl substances in aqueous film forming foam contaminated soils - Implications for remediation using soil washing
(Peer reviewed; Journal article, 2023)A soil that was historically contaminated with Aqueous Film Forming Foam (AFFF) was dry sieved into size fractions representative of those produced during soil washing. Batch sorption tests were then conducted to investigate ... -
Identification of biomarkers for sulphur mustard exposure
(Master thesis, 2022)Sennepsgass er et kjemisk stridsmiddel som kan påføre skade på hud, øyer og respirasjonssystemet. Sennepsgass har blitt brukt i en rekke konflikter og stoffet ble sist brukt i Syria i 2015. Bruken av kjemiske våpen er ... -
A highly selective purine-based inhibitor of CSF1R potently inhibits osteoclast differentiation
(Peer reviewed; Journal article, 2023)The colony-stimulating factor 1 receptor (CSF1R) plays an important role in the regulation of many inflammatory processes, and overexpression of the kinase is implicated in several disease states. Identifying selective, ... -
Electrochemical Oxidation for Treatment of PFAS in Contaminated Water and Fractionated Foam─A Pilot-Scale Study
(Peer reviewed; Journal article, 2023)Per- and polyfluoroalkyl substances (PFAS) are persistent synthetic contaminants that are present globally in water and are exceptionally difficult to remove during conventional water treatment processes. Here, we demonstrate ... -
Synthesis and Analysis of Chlorinated Paraffins as Reference Standards
(Doctoral theses at NTNU;2023:154, Doctoral thesis, 2023)Persistent organic pollutants (POPs) are synthetic chemicals that persist in nature over time and lead to adverse effects towards humans and the environment. Due to their concerning properties, such as persistency, toxicity ... -
Arctic Ocean’s wintertime mercury concentrations limited by seasonal loss on the shelf
(Peer reviewed; Journal article, 2022)High biota mercury levels are persisting in the Arctic, threatening ecosystem and human health. The Arctic Ocean receives large pulsed mercury inputs from rivers and the atmosphere. Yet the fate of those inputs and possible ... -
Silica-modified bismutite nanoparticles for enhanced adsorption and faster solar photocatalytic degradation of methylene blue
(Peer reviewed; Journal article, 2023)Herein, we report the synthesis of silica-modified self-assembled structures of bismutite (BSC) through a facile hydrothermal route. The incorporation of silica into the hybrid led to improved adsorption of cationic methylene ... -
Assessing the Persistence and Mobility of Organic Substances to Protect Freshwater Resources
(Peer reviewed; Journal article, 2022)Persistent and mobile organic substances are those with the highest propensity to be widely distributed in groundwater and thereby, when emitted at low-levels, to contaminate drinking water extraction points and freshwater ... -
Studie av vannkjemi i akvakultur som basis for studier om skinnhelse hos laks
(Master thesis, 2023)Det er i dag en økende etterspørsel etter mat på jordkloden, og en viktig sektor i denne sammenhengen er akvakultur og oppdrett av sjømat. Akvakultur er, og vil være, en essensiell næring for å forsyne verdens befolking ... -
Surface Wrinkling with Memory for Programming Adhesion and Wettability
(Peer reviewed; Journal article, 2023)Modulating surface wrinkling is important for a variety of engineering applications. It has been known for more than two decades that the wavelength of surface wrinkles occurring in a metal film–soft polymer system scales ... -
Ultra-robust icephobic coatings with high toughness, strong substrate adhesion and self-healing capability
(Peer reviewed; Journal article, 2022)Enabling surfaces with passive anti-icing properties is an emerging, facile, economical, and energy-saving strategy to mitigate the harm caused by ice accretion. However, the combination of icephobicity and robustness still ... -
Fully Polarizable QM/Fluctuating Charge Approach to Two-Photon Absorption of Aqueous Solutions
(Peer reviewed; Journal article, 2019)We present the extension of the quantum/classical polarizable fluctuating charge model to the calculation of single residues of quadratic response functions, as required for the computational modeling of two-photon absorption ... -
Maternal bisphenol and phthalate urine concentrations and weight gain during pregnancy
(Journal article; Peer reviewed, 2020)