Blar i Institutt for kjemi på tittel
Viser treff 336-355 av 1352
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Enantioselective Synthesis of Homo-N-Nucleosides Containing a 1,4-Dioxane Sugar Analog
(Journal article; Peer reviewed, 2008)A dioxane homo-sugar analog, (2S,5S)-and (2R,5S)-5-[(4S)-2,2-dimethyl-1,3- dioxolan-4-yl]-2-iodomethyl-1,4-dioxane was prepared from (2R,3R)-dimethyl tartrate, and further elaborated into the corresponding homo-N-nucleoside ... -
Enantioselectivity, swelling and stability of 4-hydroxyprolinol containing acrylic polymer beads in the asymmetric reduction of ketones
(Journal article; Peer reviewed, 2011)A new 4-hydroxy-a,a-diphenyl-L-prolinol containing polymethacrylate, prepared without chromatography by a large scale adaptable synthesis, has been evaluated as a catalyst in the asymmetric reduction of 1-arylethanones. ... -
Endocrine Disrupting Substances in Infant Foodstuffs - Presence of Perfluoroalkyl Substances and Toxic Elements
(Master thesis, 2020)Per- og polyfluorinerte stoffer (PFAS) har den siste tiden fått mye oppmerksomhet på grunn av deres hormonforstyrrende egenskaper. PFAS er påvist i naturprøver i mange deler av verden og det er derfor grunn til bekymring ... -
Endosulfan, pentachlorobenzene and short-chain chlorinated paraffins in background soils from Western Europe
(Journal article; Peer reviewed, 2015)Soils are major reservoirs for many persistent organic pollutants (POPs). In this study, “newly” regulated POPs i.e. sum endosulfans (a-endosulfan, b-endosulfan, endosulfan sulfate), pentachlorobenzene (PeCB), and short-chain ... -
Energy Dissipation and Recovery in the Context of Silicon Production: Exergy Analysis and Thermoelectricity
(Doctoral thesis at NTNU;2015:315, Doctoral thesis, 2015)The metallurgical industry is power intensive and produces not only metals but also large amounts of excess heat. To increase the energy efficiency in this industry is thus of major interest, from both an environmental ... -
Energy dissipation in biomolecular machines
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:231, Doctoral thesis, 2012)The operation of a molecular pump, the calcium pump of sarcoplasmic reticulum is studied using mesoscopic non-equilibrium thermodynamics and molecular dynamics. The mesoscopic non-equilibrium thermodynamic description of ... -
Energy efficiency of respiration in mature and newborn reindeer
(Peer reviewed; Journal article, 2020)Reindeer (Rangifer tarandus) have evolved elaborate nasal turbinate structures that are perfused via a complex vascular network. These are subject to thermoregulatory control, shifting between heat conservation and ... -
Energy efficient design of membrane processes by use of entropy production minimization
(Journal article; Peer reviewed, 2018)To minimize entropy production means to reduce the lost work in a process, and to optimize the use of energy resources. Due to the need for re-compression, membrane units for separation of CO2 from natural gas require large ... -
Energy efficient operation of distillation columns and a reactor applying irreversible thermodynamics
(Dr. ingeniøravhandling, 0809-103X; 2002:41, Doctoral thesis, 2002)In this thesis the entropy production rate of diabatic distillation columns and a SO2 converter were minimised. This is the same as maximising the second law energy efficiency of the systems. The development of chemical ... -
Energy-Based Molecular Orbital Localization in a Specific Spatial Region
(Peer reviewed; Journal article, 2020)We present a novel energy-based localization procedure able to localize molecular orbitals into predefined spatial regions. The method is defined in a multiscale framework based on the multilevel Hartree–Fock approach. In ... -
Energy-Efficient Designs of Systems: From Nature to Chemical Engineering
(Master thesis, 2019)Dette masterprosjektet omfatter en undersøkelse av to forskjellige emner. Vi bruker teorien om irreversibel termodynamikk som et rammeverk for å betrakte effekten av geometri på energi-effektivitet av systemer i naturen. ... -
Engineering chemistry in the strong coupling regime: theoretical insights and new perspectives
(Doctoral theses at NTNU;2023:316, Doctoral thesis, 2023)Cavity quantum optics deals with the interaction of photons and molecules inside an optical cavity, i.e., in the region between two closely spaced mirrors. Perfect optical cavities can only support certain frequencies of ... -
Enhanced path sampling using subtrajectory Monte Carlo moves
(Journal article, 2023)Path sampling allows the study of rare events, such as chemical reactions, nucleation, and protein folding, via a Monte Carlo (MC) exploration in path space. Instead of configuration points, this method samples short ... -
Enhancing Palladium Recovery Rates in Industrial Residual Solutions through Electrodialysis
(Peer reviewed; Journal article, 2023)Palladium is a vital commodity in the industry. To guarantee a stable supply in the future, it is imperative to adopt more effective recycling practices. In this proof-of-concept study, we explore the potential of ... -
Enhancing Scientific Support for the Stockholm Convention's Implementation: An Analysis of Policy Needs for Scientific Evidence
(Peer reviewed; Journal article, 2022)The Stockholm Convention is key to addressing the global threats of persistent organic pollutants (POPs) to humanity and the environment. It has been successful in identifying new POPs, but its national implementation ... -
Enhancing the quality of chemistry education in Ethiopia: A study of the use and impact of small-scale chemistry experimentation
(Doctoral thesis at NTNU;2015:243, Doctoral thesis, 2015)Despite the policy recommendations for active and practical oriented teaching, the current situation in Ethiopian science classrooms can be described as teacher-centred, where teaching styles such as practical work are ... -
Entropy facilitated active transport
(Journal article; Peer reviewed, 2017)We show how active transport of ions can be interpreted as an entropy facilitated process. In this interpretation, a particular change in the pore geometry through which substrates are transported gives rise to a driving ... -
Entropy facilitated active transport
(Journal article; Peer reviewed, 2017)We show how active transport of ions can be interpreted as an entropy facilitated process. In this interpretation, a particular change in the pore geometry through which substrates are transported gives rise to a driving ... -
Entropy production beyond the thermodynamic limit from single-molecule stretching simulations
(Peer reviewed; Journal article, 2020)Single-molecular systems are a test bed to analyze to what extent thermodynamics applies when the size of the system is drastically reduced. Isometric and isotensional single-molecule stretching experiments and their ... -
Entropy Production Minimization as Design Principle for Membrane Systems: Comparing Equipartition Results to Numerical Optima
(Journal article; Peer reviewed, 2017)Entropy production minimization procedures presented in literature show that under different assumptions the optimal solution might be characterized by different thermodynamic quantities being constant. These constant ...