Browsing Institutt for kjemi by Title
Now showing items 653-672 of 1397
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Levels of major and trace metals in the leaves and infusions of Croton macrostachyus
(Journal article; Peer reviewed, 2015)The levels of essential metals (Ca, Mg, Fe, Mn, Zn, Cu, Co, Cr, Ni) and toxic metals (Cd, Pb) were determined in the leaves of Croton macrostachyus (traditional medicinal plant) collected from four different regions of ... -
Levels of Per- and polyfluoroalkyl substances (PFAS), trace elements, and steroid hormones in Arctic char (Salvelinus alpinus) from Lake Diesetvatnet, Svalbard
(Master thesis, 2022)Arktis betegnes ofte som et uberørt område, men tilstedeværelsen av forurensninger som Per- og polyfluoralkylstoffer (PFAS) og kvikksølv har blitt påvist i miljøet og dyrelivet på grunn av at disse forbindelse har potensialet ... -
Lifetime of Li-ion Secondary Batteries and Measurement of Key Parameters for Internal Temperature Profile Assessment
(Doctoral theses at NTNU;2019:46, Doctoral thesis, 2019)The thesis’ purpose was to contribute to the understanding of thermal gradients within Li-ion secondary batteries. A first step was the determination of thermal conductivities of various electrode materials and separators. ... -
Light-driven isomerization of 11-cis retinal and the mediation of color vision
(Bachelor thesis, 2022)Omgjøring av elektromagnetisk energi fra fotoner til kjemisk energi og elektriske signaler som fører til syn er en kompleks prosess som skjer i øynene. Denne prosessen skjer ved hjelp av flere kjemiske og biologiske ... -
Likevekt i læring, læring i likevekt?: En studie av kjemisk likevekt i forhold til undervisning.
(Master thesis, 2008)Kjemisk likevekt i forhold til undervisning er overordnet tema for denne masteroppgaven, og dette har vi sett på fra flere sider. Den første er fra et historisk perspektiv, inkludert temaets plass i eldre norske lærebøker. ... -
Likheter og forskjeller i virkning og bivirkning hos virkestoffene alemtuzumab og interferon ß-1a i behandling av attakkvis multippel sklerose
(Bachelor thesis, 2020)Multippel sklerose er en alvorlig, inflammatorisk sykdom hvor pasienten får nedsatt nevrologisk funksjonalitet og levetiden blir ofte drastisk forkortet. Det eksisterer ingen medisinsk behandling som kurerer multippel ... -
Limited mobility of dioxins near San Jacinto super fund site (waste pit) in the Houston Ship Channel, Texas due to strong sediment sorption
(Journal article; Peer reviewed, 2018)Sediments from a waste pit in Houston Ship Channel (HSC) were characterized using a number of molecular markers of natural organic matter fractions (e.g., pyrogenic carbon residues, PAHs, lignins), in addition to dioxins, ... -
Limiting current density as a selectivity factor in electrodialysis of multi-ionic mixtures
(Peer reviewed; Journal article, 2023)Electrodialysis is a promising technology to remove low concentrations of target ions from multi-ionic mixtures. While the synthesis of selective membranes is a prominent topic in research, few studies have been presented ... -
Lipase Catalysed Kinetic Resolution of Stiripentol
(Journal article; Peer reviewed, 2012)Kinetic resolution of rac-Stiripentol, catalysed by lipase A from Candida antarctica by esterification with vinyl butanoate was performed with an E-value of 24. This allowed isolation of (3S)-Stiripentol with an ee of 86 ... -
Lipase Catalyzed Synthesis of Enantiopure Precursors and Derivatives for β-Blockers Practolol, Pindolol and Carteolol
(Peer reviewed; Journal article, 2021)Sustainable methods for producing enantiopure drugs have been developed. Chlorohydrins as building blocks for several β-blockers have been synthesized in high enantiomeric purity by chemo-enzymatic methods. The yield of ... -
Lithium Extraction from Seawater Brine; Investigating a Frugal Method that could be easily Implemented in Developing Countries
(Master thesis, 2022)Behovet for litium (Li) øker i takt med det økende behovet for energilagring og blir nærmer seg p bli en forsyningsrisiko. I tillegg er effekten av utløpet av saltlaken fra ferskvannsindustrien et økende problem som kan ... -
Lithium ion-water clusters in strong electric fields: A quantum chemical study
(Journal article, 2015)We use density functional theory to investigate the impact that strong electric fields have on the structure and energetics of small lithium ion–water clusters, Li+·nH2O, with n = 4 or 6. We find that electric field strengths ... -
Lithium Recovery from Lithium-Ion EV Battery Waste: A Review of Current Methods and Challenges
(Bachelor thesis, 2023)Den voksende elbilsindustrien og den tilknyttede økningen i etterspørselen etter litium-ion-batterier (LIB) har resultert i en betydelig økning i batteriavfall. Nåværende resirkuleringskapasitet strever med å holde tritt ... -
LLZO as a Solid Electrolyte for Next Generation Batteries and their Potential Application in Electrical Vehicles
(Bachelor thesis, 2022)Faststoff-batterier anses å være oppfølgeren til konvensjonelle flytende elektrolyttbatterier, til og med forventet å overgå dem når det gjelder kapasitet, sikkerhet og levetid. Dessverre står denne teknologien overfor ... -
LNMO as a cathode material in Li-ion batteries: Reasons for capacity fade and measures taken to prevent it
(Bachelor thesis, 2023)Lithium nikkel manganoksid (LNMO) er en lovende kandidat som katodemateriale i Li-ion batterier (LIBs) på grunn av sin høye energitetthet. Batterier med LNMO som katodemateriale kan oppleve kapsitetstap over tid grunnet ... -
Local electric field factors by a combined charge-transfer and point-dipole interaction model
(Peer reviewed; Journal article, 2015)A force-field model for the local electric field as a linear response to a frequency-dependent external electric field is presented based on a combined charge-transfer and point–dipole interaction (CT-PDI) force-field model ... -
Local equilibrium in liquid phase shock waves
(Peer reviewed; Journal article, 2023) -
Local Field Factors and Dielectric Properties of Liquid Benzene
(Journal article; Peer reviewed, 2015)Local electric field factors are calculated for liquid benzene by combining molecular dynamic simulations with a subsequent force-field model based on a combined charge-transfer and point-dipole interaction model for the ... -
Local initiation conditions for water autoionization
(Journal article; Peer reviewed, 2018)The pH of liquid water is determined by the infrequent process in which water molecules split into short-lived hydroxide and hydronium ions. This reaction is difficult to probe experimentally and challenging to simulate. ... -
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 ...