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Now showing items 101-200 of 1543
(Master thesis / Masteroppgave, 2010)
TiNb2O7 er tidligere vist å være en blandet elektron- og protonleder. Mange sider av defektstrukturen er ukjent for TiNb2O7, og en teoretisk og eksperimentell studie av denne ville kunne bidra til økt forståelse av ...
(Master thesis / Masteroppgave, 2009)
Metylklorid-til-hydrokarboner (MeXTH)-prosessen er et trinn i oppgraderingen av naturgass til alkener. Prosessen unngår produksjon av syntesegass som er en energikrevende prosess. I dette arbeidet sammenlignes to ...
(Master thesis / Masteroppgave, 2010)
In this study, the potential of using off-line or online two dimensional liquid chromatography (2D LC) separations of plant extracts was examined.
A new approach to high speed, online isocratic elution comprehensive 2D LC ...
(Master thesis / Masteroppgave, 2006)
Abstract part I:
Investigation of the effect of column temperature in capillary reversed phase high performance liquid chromatography of proteins
The effect of column temperature on separation of proteins in reversed ...
(Master thesis / Masteroppgave, 2010)
Wanshan er et lite distrikt i Guizhou-provinsen i Sørvest-Kina som i årrekker var den viktigste Kviksølvprodusenten i Kina frem til gruvene ble stengt i 2001. Gruvedriften har etterlatt seg store slagghauger og gruvetipper ...
(Master thesis / Hovedoppgave, 2005)
Bariumterbat, BaTbO3, er en perovskitt beslektet med BaCeO3 og BaZrO3, som begge er kjente for å ha høyest protonledningsevne blant høytemperatur protonledere. Undersøkelser har vist at akseptordopet bariumterbat tar opp ...
(Master thesis / Masteroppgave, 2009)
Defect chemical investigations on the LaNbO4-LaTaO4 system are, except for investigations on the parent phases, LaNbO4 and LaTaO4, non-existent. Research on this system is required to understand the impact of tantalum-doping ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
(Master thesis / Masteroppgave, 2012)
Numerous studies on lake Vansjø, located in south-east in Norway, have identified eutrophication as one of the major causes for not achieving good water quality status in the western part of the lake. This has been shown ...
(Master thesis / Masteroppgave, 2012)
Porous layer open tubular (PLOT) columns and immobilized trypsin open tubular (TOT) columns of 10 μm inner diameter (i.d.) were made and characterized for fast intact protein analysis and protein digestion, respectively. ...
(Master thesis / Masteroppgave, 2011)
Det antidepressive legemidlet venlafaxin selges i dag som et racemat på tross av at dens to enantiomerer har ulik farmakologisk virkning. Asymmetriske synteser av venlafaxin finnes i litteraturen, men ingen av dem egner ...
(Master thesis / Masteroppgave, 2010)
(Master thesis / Masteroppgave, 2011)
(Master thesis / Masteroppgave, 2008)
(Master thesis / Masteroppgave, 2010)
The methanol-to-hydrocarbons (MTH) reaction is a flexible alternative step in the upgrading of natural gas, coal or biomass. By tuning the catalyst and process conditions, methanol can be converted into a variety of ...
Asymmetrisk syntese av Venlafaxin analoger Restricted Access
(Master thesis / Masteroppgave, 2009)
SAMMENDRAG
Hensikten med dette prosjekt var å utvikle kjemiske metoder for asymmetrisk fremstilling av en serie Venlafaxin analoger som skulle testes for biologisk aktivitet i sentralnervesystemet. Siden det ikke ble oppnådd ...
(Master thesis / Hovedoppgave, 2003)
Two bis (quaternary ammonium bromide) surfactants, hexanediyl-1,6-bis
(dimethyldodecylammonium bromide) (12-6-12) and dimethylparaphenyl-
a,w-bis(dimethyldodecylammonium bromide) (12-fi-12), were synthesised
and their ...
(Master thesis / Masteroppgave, 2008)
SAMMENDRAG
(E)- og (Z)-isomere av 5-(brommetylen)furan-2(5H)-oner I, 5-(brommetylen)dihydrofuran-2(3H)-on II og 5-(brommetylen)isobenzofuran-1(3H)-oner III har blitt syntetisert for testing av biologisk aktivitet, med ...
Flervalgsoppgaver som selvtestingsmiddel i KJM1100 Restricted Access
(Master thesis / Masteroppgave, 2011)
Gjennom kunnskapsløftet av 2006 ble den grunnleggende ferdigheten Å kunne bruke digitale verktøy innført. Dette var et resultat av stadige teknologiske fremskritt, som også gjør det naturlig å innvie teknologien i ...
(Master thesis / Hovedoppgave, 2004)
The present work presents a fast and sensitive capillary liquid chromatography (µLC) column-switching method with electrospray ionization time-of-flight mass spectrometry (ESI-TOF-MS) detection for the simultaneous ...
(Master thesis / Hovedoppgave, 2004)
New chelating ligand systems were made and further complexed with platinum centers to give complexes for hydrocarbon C H activation. The first of the complexes was the [(1,1 -dimethyl-3,3 -methylene diimidazoline-2,2 ...
(Master thesis / Masteroppgave, 2010)
This study was performed in the Vansjø-Hobøl catchment in SE Norway, as part of research related to the transport of phosphorus to the eutrophic lake Vansjø, the largest lake in the catchment. This study is part of The ...
(Master thesis / Masteroppgave, 2011)
(Master thesis / Hovedoppgave, 2007)
I det foreliggende hovedfagsarbeidet er hydrider av tre intermetalliske faser; Y3Ni6Al2, LaNiSn og NdNiSn studert med hensyn på strukturkjemi og absorpsjon-desorpsjon egenskaper.
Arbeidet med Y3Ni6Al2 og dets deuterider ...
(Master thesis / Hovedoppgave, 2003)
There is a growing interest in the characterisation of volatile organic compounds (VOCs) in workroom air because of the potentially adverse health effects of these compounds. Volatile organic compounds have intrinsic ...
(Master thesis / Masteroppgave, 2006)
Abstract
Monolithic poly (styrene-co-divinylbenzene) capillary columns were prepared by free radical cross-linking copolymerisation of styrene and divinylbenzene monomers in the presence of a mixture of tetrahydrofuran ...
(Research report / Forskningsrapport, 2012)
CLIMIT project no. 208122
(Master thesis / Masteroppgave, 2006)
Metalorganic frameworks (MOFs) are a new type of compounds which have been intensely investigated during the last few years. They have been synthesized using a wide variety of metals and ligands constructing a vast number ...
(Master thesis / Masteroppgave, 2009)
(Master thesis / Masteroppgave, 2012)
Oppgaven beskriver tilvirking, funksjonalisering og karakteriasering av UiO-67, et krystallinsk porøst materiale oppdaget ved Universitetet i Oslo. Oppgavens fokus er koordinering av metall-atomer til deler av krystallen ...
Synthesis of Zr-MOF UiO-66 : A study of fundamental properties of UiO-66 Restricted Access
(Master thesis / Masteroppgave, 2012)
MOF stands for metal-organic frameworks. They are hybrid porous solids with a geometrically well-defined structure that can be tailored, both in shape and size, to many different applications. Such applications include gas ...
Development of a LC-MS/MS method for comparing brain tumour samples Restricted Access
(Master thesis / Masteroppgave, 2009)
(Master thesis / Masteroppgave, 2007)
In the present work, a 2D-capLC-ESI-TOF-MS method for fractionation and separation of peptides in microdialysates is demonstrated. Both comprehensive and quantitative analysis was conducted. The microdialysates samples ...
(Master thesis / Masteroppgave, 2009)
Abstract
Developing a process in which natural gas, coal and biomass can be converted to valuable petrochemical products is becoming increasingly important. The methanolto-hydrocarbon (MTH) reactions constitute the final ...
(Master thesis / Masteroppgave, 2010)
Sammendrag
I dette prosjektet er reaksjonen mellom maursyre og OH og reaksjonen mellom maursyre og Cl, som er de viktigste nedbrytningsreaksjonene i atmosfæren blitt studert nærmere både eksperimentelt og ved kvantekjemiske ...
(Master thesis / Masteroppgave, 2011)
(Master thesis / Masteroppgave, 2009)
Ba3La(PO4)3 har i en tidligere studie vist å lede protoner ved høye temperaturer. Aspekter tilknyttet defektstrukturen og transportmekanismene krever imidlertid nærmere undersøkelser og denne oppgaven tilstreber å gi en ...
(Master thesis / Masteroppgave, 2007)
The Methanol-to-Olefins (MTO) process for the production of polymer-grade olefins is a possible step
in the upgrading of natural gas. The preferred MTO catalyst is the microporous silicoaluminophosphate
H-SAPO-34 (CHA ...
Development of Heterogeneous Thiol-Ene Polymer Beads and their Applications in Polymer-Supported Organocatalysis Restricted Access
(Master thesis / Masteroppgave, 2011)
Siden tusenårsskiftet har reaksjoner katalysert av ikke-metallholdige organiske molekyler (organokatalyse) økt i popularitet. Organokatalysatorer opererer under milde reaksjons betingelser og via flere aktiviseringsmoder. ...
(Master thesis / Masteroppgave, 2011)
I et prosjekt ved Institutt for Energiteknikk (IFE) skulle mekanismer studeres ved bruk av surfaktanter i kombinasjon med superkritisk CO2 for økt utvinning av restolje fra eldre oljereservoarer. Surfaktant sammen med CO2 ...
(Master thesis / Masteroppgave, 2009)
I dette arbeidet er det for første gang deponert tynne filmer av α-Bi2O3 med ALD. Det er undersøkt tre forskjellige forløpere for vismutoksider: BiPh3 (Ph = fenyl), Bi(OtBu)3 (OtBu = tert-butoksy) og Bi(thd)3 (thd = ...
(Master thesis / Hovedoppgave, 2006)
The structures of various CaMnO3-x and SrMnO3-x oxygen deficient compounds have been attempted solved from experimental diffraction patterns by Rietveld refinement. All samples used for this purpose have been synthesized ...
(Master thesis / Masteroppgave, 2006)
In the present study, an analytical method for determination of hydroxylated polychlorinated biphenyls (OH-PCBs) and polybrominated diphenyl ethers (OH-PBDEs) and a selection of PCBs, PBDEs and pesticides in biological ...
(Master thesis / Masteroppgave, 2007)
The Norwegian Defence Research Establishment (FFI) is presently developing a mobile laboratory for the identification of chemical warfare agents (CWA) and related compounds. The laboratory will be used in the field, and ...
(Master thesis / Hovedoppgave, 2005)
Åtte Ni/bærer - katalysatorer har blitt testet for tørr-reformering av propan. Dette er Ni/SiO2, Ni/Al2O3, Ni/MgO, Ni/CaO og Ni/Mg(Al)O (type I-IV). Av de hydrotalsitt-baserte katalysatorene har det spesielt blitt lagt ...
(Master thesis / Masteroppgave, 2006)
Low molecular weight homopolymers of methylmethacrylate and tertbutylmethacrylate were polymerized by the controlled process of ATRP- Atom Transfer Radical Polymerization.
The procedure for initiation of an ATRP reaction ...
(Master thesis / Hovedoppgave, 2006)
Two different types of cationic polysoaps together with their monomers were obtained. These species consist of divalent quaternary ammonium repeat units carrying a hydrocarbon or a fluorocarbon side chain, respectively. ...
(Master thesis / Hovedoppgave, 2005)
(Master thesis / Masteroppgave, 2009)
ABSTRACT
In this study, we will try to develop different microgel systems for enhanced oil recovery applications. The usage of microgels for this application has not been much studied, but it seems to have a great potential. ...
(Master thesis / Masteroppgave, 2009)
The world second largest mercury (Hg) mine and smelter, the Khaidarkan Mercury Plant (KMP) is located in Khaidarkan, a small city in a valley in Batken oblast, Kyrgyzstan. The smelter roasts locally
mined cinnabar and ...
Trace determination of sulphur mustard and related compounds in environmental samples by headspace-trap GC-MS Restricted Access
(Master thesis / Masteroppgave, 2008)
New methods for trace determination of sulphur mustard (HD) by headspace-trap GC-MS have been developed for water and soil samples. As HD is unstable, especially in water, methods for determination of some of the cyclic ...
(Master thesis / Masteroppgave, 2012)
Platinum group metals (PGMs) have received much attention in the fields of industry, geochemistry and medicine. Due to scarcity of PGMs and their high industrial demands, recycling of PGM bearing materials such as industrial ...
(Master thesis / Masteroppgave, 2012)
This study was an integrated part of the interdisciplinary research project EUTROPIA, funded by Research Council of Norway (190028/S30). The goal of the nature science part of the EUTROPIA project is to improve the ...
(Master thesis / Masteroppgave, 2012)
Excessive input of anthropogenic reactive nitrogen (Nr) to forested ecosystems is associated with increased rates of denitrification and possible emission of the potentially harmful greenhouse gas nitrous oxide (N 2 ...
(Master thesis / Masteroppgave, 2011)
(Master thesis / Hovedoppgave, 2003)
Parts of south-west China are heavily exposed to acid deposition. This is the cause for the IMPACTS (Integrated Monitoring Project on Acidification of Chinese Terrestrial Systems) project, to which this thesis is related. ...
(Master thesis / Masteroppgave, 2006)
Sammendrag:
Arbeidet konsentrerer seg om syntetisering av sinkfosfater med fiberzeolitt- struktur og karakterisering av disse.
Siden 1990-tallet har det vært utført et betydelig forskningsarbeid for å samle inn informasjon ...
(Master thesis / Masteroppgave, 2010)
The Characterization of anti body-antigen interactions provider Crucial information on the structural basis of the specificity of binding of two antibodies Their target anti-gens. In this project, an attempt was made two ...
(Master thesis / Hovedoppgave, 2003)
In the present work, pI-separation of proteins by pH-gradient ion-exchange chromatography (IEC) on packed capillary columns is demonstrated. An important technical challenge for adapting this technique to capillary dimensions, ...
(Master thesis / Masteroppgave, 2010)
Syklopropaner kan delta i syntetisk nyttige ringåpningsreaksjoner. Ved fremstillingen av syklopropaner kan flere stereogene sentre dannes fra relativt enkle forbindelser. Dette gjør syklopropanene til viktige syntetiske ...
(Master thesis / Hovedoppgave, 2004)
In-situ pulvernøytron- og synkrotron røntgendiffraksjon har blitt brukt til å undersøke desorpsjonsegenskapene og strukturelle forhold for utvalgte intermetalliske hydrider. Ved hjelp av diffraksjonsdata fra in-situ ...
(Master thesis / Masteroppgave, 2009)
Grunnstoff 106, seaborgium, tilhører de aller tyngste grunnstoffene, transaktinidene. Som forberedelse til kjemisk undersøkelse av seaborgium med ekstraksjonssystemet SISAK, er et kjemisk system begynt utviklet med de ...
(Master thesis / Masteroppgave, 2008)
(Master thesis / Hovedoppgave, 2003)
The present work reports capillary liquid chromatographic (LC) column switching methodology tailored for sensitive and selective determination of the four phthalic acid monoesters monoethyl phthalate (MEP), monobutyl ...
(Master thesis / Masteroppgave, 2007)
Atmospheric particulate matter samples (PM10) have been collected on quartz and Teflon filters, for 12 days from 16th to 28th of March 2006 on the 4th floor of the University of Science and Technology in Taiyuan, China. ...
(Master thesis / Masteroppgave, 2010)
Abstract
The uncharged temperature responsive polymer MHEC-g-PNIPAAM (modified hydroxyethylcellulose graft poly(N-isopropylacrylamide)), and its anionic analogue were characterized by the aid of dynamic light scattering ...
(Master thesis / Hovedoppgave, 2004)
Motivasjonen for oppgaven er å lage en heterogen katalysator som kan konvertere metan direkte til andre kjemikalier. Det kjemiske grunnlaget er hentet fra et homogent system hvor katalysatoren er et metallorganisk kompleks. ...
(Master thesis / Masteroppgave, 2006)
Sammendrag
Koordinasjonspolymere (CPO; coordination polymer), metalorganiske nettverk forbindelser (MOF; metal organic framework structure) og uorganiske-organiske hybridforbindelser utgjør fort voksende grupper av nye ...
(Master thesis / Hovedoppgave, 2003)
Stereokjemisk kontroll er svært viktig i organisk kjemi. Med spiraner som utgangspunkt er det forsøkt å syntetisere rigide ligander til asymmetrisk hydrogenering. Bakgrunnen for oppgaven er beskrevet i kapittel 1.
I ...
(Master thesis / Masteroppgave, 2005)
Soil samples from the Norwegian catchment of Langtjern were analysed. These samples were air-dried before determining cations concentrations applying the ICP-AES technique and pH measurements. The results were used to ...
(Master thesis / Masteroppgave, 2009)
Katalyse er et felt innen kjemien som blir stadig viktigere. Utviklingen av nye koordinasjonspolymerer, også kjent som MetallOrganiske Nettverk (MetalOrganic Framework - MOF), er viktig i jakten på nye effektive katalysatorer ...
(Master thesis / Masteroppgave, 2009)
(Master thesis / Masteroppgave, 2011)
PET is an effective tool for imaging of biochemical processes within patients and is instrumental for quantitative imaging of the availability of opioid receptors in the central nervous system. The opioid receptor system ...
(Master thesis / Masteroppgave, 2007)
(Master thesis / Masteroppgave, 2009)
(Master thesis / Masteroppgave, 2009)
(Doctoral thesis / Doktoravhandling, 2017)
Mye av dagens høyteknologiske utstyr og apparater ville sannsynligvis ikke sett dagens lys hvis ikke det hadde vært for materialteknologiens stadige fremskritt. I jakten på stadige forbedringer av slik teknologi må man ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
The Schlenk equilibrium is a complex reaction governing the presence of multiple chemical species in solution of Grignard reagents. The full characterization at the molecular level of the transformation of CH3MgCl into ...
(Journal article / Tidsskriftartikkel / SubmittedVersion, 2017)
Molecular dynamics simulations (dissipative particle dynamics–DPD) were developed and used to quantify wall-normal migration of polymer chains in microchannel Poseuille flow. Crossflow migration due to viscous interaction ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
Fluorescence polarization (FP) is a highly regarded technique for studying drug–protein interactions, but has limited value regarding protein mixtures. As a novel approach to drug target discovery, the possibility of ...
(Master thesis / Masteroppgave, 2017)
Denne oppgaven har hatt flere mål. Det første var å syntetisere AlPO-5 krystaller med varierende lengde samt undersøke effekten synteseparameterne konsentrasjon og aldring av syntese-gel kan ha på morfologi og størrelse. ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1993)
© 1993 Acta Chemica Scandinavica
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1994)
The nuclear and magnetic structures of ( Y 1 − x Ca x ) Ba 2 Fe 3 O 8 + δ with x=0.05, 0.10, and 0.20 have been investigated by neutron-powder diffraction at room temperature. The compound crystallizes with the symmetry ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2004)
Two types of chemical-pressure effects on the Verwey-type transition in Ba Sm Fe 2 O 5 are studied, viz., ionic-size contractions at the Ba and Sm sites. Whereas the replacement of Sm by the smaller Eu and Gd atoms increases ...
(Master thesis / Masteroppgave, 2018)
Quinolones are a class of synthetic compounds that are used as antibacterial agents since their discovery in the 1960s. Their chemical synthesis has mostly been based on ring-closing reactions, for instance the Gould-Jacobs ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1992)
© 1992 Acta Chemica Scandinavica
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
A one pot catalytic system which involves Cu and an alkoxide co-catalyst has been used for methanol (MeOH) synthesis at low temperature. Up to about 92% syngas conversion per pass and more than 90% selectivity to MeOH (the ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2004)
Pressure effects on the charge-ordering (CO) transition have been investigated for an oxygen-deficient double-perovskite cobalt oxide, BaYCo 2 O 5.0 , through resistivity measurements using a piston-cylinder-type clamp ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1991)
© 1991 Acta Chemica Scandinavica
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1994)
© 1994 Acta Chemica Scandinavica
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1992)
The nuclear and magnetic structures of YBa 2 Fe 3 O 8 have been investigated by powder neutron diffraction at room temperature. The nuclear structure of the compound has the symmetry of space group P4/mmm and lattice ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1991)
© 1991 Acta Chemica Scandinavica
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1990)
© 1990 Acta Chemica Scandinavica
(Master thesis / Masteroppgave, 2017)
The purpose of this work is to systematically assess the consequences of a potential radiological attack on processed food in a production facility. Infant milk formula (IMF) is specifically chosen as the case of investigation. ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2008)
Zeolites with the CHA topology have been synthesized with Si/Al ratios ranging from 15 to 133. ICP-AES analysis shows that the Si/Al ratio in the material is close to linearly related to the Si/Al ratio in the reaction ...
(Master thesis / Masteroppgave, 2017)
In this thesis, structural and dynamic features of thermoresponsive amphiphilic pentablock copolymers have been studied for their potential use for drug delivery application. The copolymers are amphiphilic poly(ethylene ...
(Doctoral thesis / Doktoravhandling, 2014)
Gangliosides are sialic acid-containing glycosphingolipids expressed on all vertebrate cells. They are primarily positioned in the plasma membrane, with the ceramide part anchored in the membrane and the glycan part exposed ...
(Master thesis / Masteroppgave, 2006)
Hensikten med denne oppgaven var å bestemme kvikksølv i jord i et nedbørfelt.
Kvikksølv er en langtransportert luftforurensing som slippes ut fra antropogene så vel som naturlige kilder. Kvikksølv på elementær form blir ...
Syntese av Li-holdige filmer med ALCVD Restricted Access
(Master thesis / Masteroppgave, 2008)
(Master thesis / Masteroppgave, 2009)
This work presents the first reported thin film deposition of α-Bi2O3 by ALD (Atomic Layer Deposition). In addition, thin films of Co3O4 and CoO are for the first time reported deposited by ALD from the respective novel ...