Browsing Institutt for kjemi by Title
Now showing items 985-1004 of 1397
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Selective functionalization of α-D-glucopyranosides in the synthesis towards sugar fatty acid esters
(Master thesis, 2019)Som en del av et større synteseprosjekt ble utvalgte reaksjoner, nyttige i den overordnede syntesestrategien, utforsket. Regioselektiv beskyttelse av allylerte α-D-glukopyranosider, esterifisering og videre avbeskyttelse ... -
Selective recovery of silver ions from copper-contaminated effluents using electrodialysis
(Journal article; Peer reviewed, 2024)With the growing demand for silver, the recycling of this precious metal from secondary sources has become imperative. However, the presence of copper impurities poses a significant challenge. This study aims to explore ... -
Selectivity and self-diffusion of CO2 and H2 in a mixture on a graphite surface
(Journal article; Peer reviewed, 2013)We performed classical molecular dynamics (MD) simulations to understand the mechanism of adsorption from a gas mixture of CO2 and H2 (mole fraction of CO2 = 0.30) and diffusion along a graphite surface, with the aim to ... -
Selen og folkesykdommer
(Bachelor thesis, 2021)Selen er et essensielt sporstoff som mennesket trenger hver dag for å overleve og ikke lide av ulike mangelsykdommer. Den ideelle mengden selen ligger mellom 40 og 400 µg per dag. Selen finnes naturlig i jordskorpen og i ... -
Selenomethionine-catalyzed nickel ion reduction at a mercury electrode: applications in the analysis of nutritional supplements
(Journal article; Peer reviewed, 2006)Selenomethionine (SeMet) is a catalyst for Ni(II) reduction at a mercury electrode in a borax buffer at pH around 9 and gives rise to a differential pulse voltammetric peak, A, at -0.74 V vs. the Ag|AgCl, (3 M KCl) reference ... -
Self-deicing Electrolyte Hydrogel Surfaces with Pa-level Ice Adhesion and Durable Anti-freezing/frost Performance
(Peer reviewed; Journal article, 2020)Despite the remarkable advances in mitigating ice formation and accretion, however, no engineered anti-icing surfaces today can durably prevent frost formation, droplet freezing and ice accretion in an economical and ... -
Semi-Wet Design of High Voltage Subsea Cables with XLPE-insulation
(Bachelor thesis, 2024)Et semi-våt design av undersjøiske høyspentkabler (HVSC) har blitt undersøkt som et mulig alternative til tørr-design gjennom analyse av vanntrær, akkumulering av romladninger og urenheter i tverrbundet polyetylen ... -
Semisyntese av paclitaxel - et historisk perspektiv
(Bachelor thesis, 2023)Det viktige kreftbehandlingsstoffet paclitaxel, som kommer fra barken på stillehavsbarlinden, er ikke bærekraftig å ekstrahere fra den saktevoksende planten. Blant andre alternativer for anskaffelse er semisyntese av ... -
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 ... -
Series of studies to investigate different methods for rinsing runoff water from roads
(Master thesis, 2018)Runoff from roads contains a wide range of pollutants such as inorganic compounds and organic compounds which can be dissolved or particle-bound. The dissolved contaminates are often more mobile and therefore also bioavailable ... -
Sewage sludge biochars as effective PFAS-sorbents
(Peer reviewed; Journal article, 2022)The use of sewage sludge to produce biochar-based sorbents for per- and polyfluoroalkyl substances (PFAS) removal from water and soil may be an economically and environmentally sustainable waste management option. This ... -
Shape of a frictional fluid finger
(Peer reviewed; Journal article, 2023)Frictional fluid dynamics describes the displacement patterns that arise when a confined mixture of liquid and grains are displaced by an immiscible fluid under pressures that are too small to cause drainage into single ... -
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 ... -
Silicon for the direct process to methylchlorosilanes
(Doktor ingeniøravhandling;1992:67, Doctoral thesis, 1992)The available literature in the field of the direct process to methylchlorosilanes has been reviewed and commented. An apparatus and operation procedure have been developed to study the effect of structure on the direct ... -
SILISIUM PRODUKSJONSPROSESS. ENERGI OG EKSERGI ANALYSE FOR HOLLA SILISIUM SMELTEVERK.
(Master thesis, 2012)Metallurgisk industri prøver å forene kvalitet av rå varer med relativt lav pris og den beste teknologien. Eksergi gjør det mulig å finne og kvantifisere evnen til forbedring av termiske og kjemiske prosesser. Selve eksergi ... -
Simple generalized reaction conditions for the conversion of primary aliphatic amines to surfactant-like guanidine salts with 1H-pyrazole carboxamidine hydrochloride
(Journal article, 2017)Improved reaction conditions for the electrophile reaction between a free aliphatic amine and 1H-pyrazole carboxamidine have been discovered. The surfactant-like guanidine salts, which are often hard to work with, were ... -
A simple hanging mercury drop electrode
(Peer reviewed; Journal article, 2000)A device producing reproducible hanging mercury drops at the end of a glass capillary is described. Mercury flow through th capillary is controlled by means of a closing needle actuated by an electromagnetic relay. The ... -
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 ... -
Simulating absorption spectra of flavonoids in aqueous solution: A polarizable QM/MM study
(Journal article; Peer reviewed, 2020)We present a detailed computational study of the UV/Vis spectra of four relevant flavonoids in aqueous solution, namely luteolin, kaempferol, quercetin, and myricetin. The absorption spectra are simulated by exploiting a ... -
Simulating electron-avalanche-driven positive streamers in dielectric liquids
(Doctoral theses at NTNU;2020:289, Doctoral thesis, 2020)Summary of thesis: The thesis presents a novel predictive model for simulating positive streamers in dielectric liquids. Such liquids are commonly used for electrical insulation of high-power equipment, for example power ...