Browsing Institutt for kjemi by Title
Now showing items 306-325 of 1399
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Early Warning Signs and Dynamics of H2S Production In Recirculating Aquaculture System
(Master thesis, 2021)The introduction of seawater, especially in post-smolt recirculating aquaculture system (RAS), has led to the formation of hydrogen sulfide (H2S) which is one of the major challenges in RAS that has caused sudden mass fish ... -
Eco-toxicological and climate change effects of sludge thermal treatments: Pathways towards zero pollution and negative emissions
(Peer reviewed; Journal article, 2024)The high moisture content and the potential presence of hazardous organic compounds (HOCs) and metals (HMs) in sewage sludge (SS) pose technical and regulatory challenges for its circular economy valorisation. Thermal ... -
Economical Synthesis of 13C-Labeled Opiates, Cocaine Derivatives and Selected Urinary Metabolites by Derivatization of the Natural Products
(Journal article; Peer reviewed, 2015)The illegal use of opiates and cocaine is a challenge world-wide, but some derivatives are also valuable pharmaceuticals. Reference samples of the active ingredients and their metabolites are needed both for controlling ... -
Effect of Auxiliary Donors on 3,8-Phenothiazine Dyes for Dye-Sensitized Solar Cells
(Journal article; Peer reviewed, 2019)Phenothiazines are one of the more common dye scaffolds for dye-sensitized solar cells. However, these sensitizers are exclusively based on a 3,7-substitution pattern. Herein, we have synthesized and characterized novel ... -
Effect of CO2 on elemental concentrations in recirculating aquaculture system tanks
(Journal article; Peer reviewed, 2019)High levels of carbon dioxide (CO2) and subsequent changes in water quality parameters in recirculating aquaculture systems (RAS) are known to impair fish health, welfare and growth performance. A three-month trial was ... -
Effect of furan π-spacer and triethylene oxide methyl ether substituents on performance of phenothiazine sensitizers in dye-sensitized solar cells
(Journal article; Peer reviewed, 2019)Conjugated π-spacers are used to improve the light harvesting properties of sensitizers for dye-sensitized solar cells. In several recent works, furan has outperformed other popular π-spacers such as thiophene and phenyl. ... -
Effect of hydroxamate and catecholate siderophores on iron availability in the diatom Skeletonema costatum: Implications of siderophore degradation by associated bacteria
(Journal article; Peer reviewed, 2019)The bioavailability of iron (Fe) across marine ecosystems, mainly determined by Fe speciation and species-specific requirements of phytoplankton, remains largely unresolved. Siderophores are relevant within the pool of ... -
Effect of iron source on growth and iron uptake in Cyanobacteria Synechococcus sp. PCC 7002 wild type and mutants
(Master thesis, 2020)Iron is an important trace element that is involved in biological processes and often acts as a limiting nutrient in the ocean. Because of low iron bioavailability in seawater, many organisms have shown ability to adapt ... -
The Effect of mechanical mixing and Porosity on the Activity of Ag and Cu Ion exchanged Zeotypes in the HC-SCR of NOx with Propene
(Master thesis, 2017)Abstract The effect of mechanical mixing and porosity of Ag and Cu ion exchanged zeotypes in the hydrocarbon selective catalytic reduction (HC-SCR) of NOx with propene has been investigated. To this effect, mordenite, ... -
Effect of Porosity and Copper Content on Copper Containing SAPO-34 for Removal of NOx
(Master thesis, 2018)In this thesis, hierarchical SAPO-34 with copper isomorphously substituted(H/CuSAPO-34) was attempted synthesised, by a hydrothermal method. As a step in the process, hierarchical SAPO-34 without copper(H/SAPO-34) was ... -
Effect of Porosity on the Hydrothermal Stability of CuSAPO-34 for the deNOx Process
(Master thesis, 2016)Hierarchical SAPO-34 with incorporated copper was tried synthesised both through a dry gel conversion and a hydrothermal method. Crystalline copper incorporated hierarchical SAPO-34 was not obtained through these directions. ... -
Effect of Pyrene-Alkyne Donors and the Preparation of a Phenothiazine Literature Record Dye - Synthesis and Evaluation in DSSCs
(Master thesis, 2018)The desire to reduce CO2 emissions, combined with an increasing energy demand from the world's increasing population, calls for new environmentally clean energy resources. Solar energy stands out as one of the most viable ... -
Effect of seven different terthiophene π-spacers on dye performance in dye-sensitized solar cells
(Journal article; Peer reviewed, 2022)To ensure high photocurrents from dye-sensitized solar cells (DSSC), it is important that the dye absorbs as much of the energy from the sunlight as possible. To achieve a wide absorption and cover larger parts of the solar ... -
Effect of Siderophore on Iron Availability in a Diatom and a Dinoflagellate Species: Contrasting Response in Associated Bacteria
(Journal article; Peer reviewed, 2018)Organic ligands play a key role controlling trace metal bioavailability in the world's oceans, yet the species-specific requirements determining whether certain iron forms can be metabolized largely remain unclear. ... -
Effect of surfactant structure on properties of oil/water interfaces: A coarse-grained molecular simulation study.
(Doktoravhandlinger ved NTNU, 1503-8181; 2004:142, Doctoral thesis, 2004)The elastic properties of oil/water/surfactant interfaces play an important role in the phase behaviour of microemulsions and for the stability of macroemulsions. The aim of this thesis is to obtain an understanding of ... -
Effect of the Ion, Solvent, and Thermal Interaction Coefficients on Battery Voltage
(Peer reviewed; Journal article, 2024)In order to increase the adoption of batteries for sustainable transport and energy storage, improved charging and discharging capabilities of lithium-ion batteries are necessary. To achieve this, accurate data that describe ... -
Effect of thiophene-based π-spacers on N-arylphenothiazine dyes for dye-sensitized solar cells
(Peer reviewed; Journal article, 2021)To study the effect of π-spacers on dye performance in DSSC, five novel phenothiazine dyes have been prepared where the number of successive thiophenes in the π-spacer was increased from zero to four. Additionally, a dye ... -
Effect of π-linkers on phenothiazine sensitizers for dye-sensitized solar cells
(Journal article; Peer reviewed, 2018)Eleven new dyes have been synthesized in order to investigate the effect of five different π-spacers and two different auxiliary donors in phenothiazine-based sensitizers for dye-sensitized solar cells. The target molecules ... -
Effects of anabolic steroids and their detection by Athlete Biological Passport in sports
(Bachelor thesis, 2023)Doping har lenge vært et relevant tema, derav også antidoping. Analysemetoder må utvikles og forbedres ettersom doping forbedres for å unngå oppdagelse. Athlete Biological Passport (ABP) ble introdusert i 2009 og var en ... -
Effects of Leachates from UV-Weathered Microplastic in Cell-Based Bioassays
(Peer reviewed; Journal article, 2019)Standard ecotoxicological testing of microplastic does not provide insight into the influence that environmental weathering by, e.g., UV light has on related effects. In this study, we leached chemicals from plastic into ...