Search
Now showing items 201-300 of 1546
(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, 2005)
ABSTRACT
LC-NMR combines the powerful separation technique liquid chromatography (LC) with the structural information obtained of nuclear magnetic resonance (NMR) spectroscopy. The technique has become an important ...
(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 / 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)
(Master thesis / Masteroppgave, 2006)
In this work, Structural, dynamical, and rheological properties of aqueous solutions of hydroxyethylcellulose (HEC) derivatives in the presence of ionic surfactants or with cyclodextrin monomers have been investigated. The ...
(Master thesis / Hovedoppgave, 2004)
SAMMENDRAG
Ukalsinert og kalsinert hydrotalsitt har blitt impregnert fra en løsning av heksakloroplatina (H2PtCl6). H2PtCl6 var løst opp i enten ionebyttet vann eller etanol. pH i impregneringsløsningen og atmosfæren har ...
Studier av reaksjon mellom HCN og OH ved atmosfæriske forhold. Restricted Access
(Master thesis / Masteroppgave, 2010)
Dette arbeidet har omhandlet reaksjon mellom HCN og OH under atmosfæriske forhold. HCN er identifisert som et produkt hovedsaklig fra forbrenning av biomasse, men dets rolle nitrogenkretsløpet er ennå ikke bestemt. ...
(Master thesis / Masteroppgave, 2006)
The SISAK (i.e. Short-lived Isotope Studied by the AKufve -technique) system was used for investigation of the reaction between osmium tetroxide and NaOH as a model for chemical study of hassium. The result was a two- stage ...
(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 ...
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, 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 ...
(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 ...
(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, 2008)
(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 ...
(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 ...
(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 ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
(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 ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
PSL1a is a lectin from the mushroom Polyporus squamosus that binds to sialylated glycans and glycoconjugates with high specificity and selectivity. In addition to its N-terminal carbohydrate-binding domain, PSL1a possesses ...
(Master thesis / Masteroppgave, 2013)
(Master thesis / Masteroppgave, 2012)
Atomlagsdeponering, ALD, er en metode for deporing av tynne filmer som er svært jevne og uniforme. Metoden er godt egnet til deponering av belegg på overflater med komplisert geometri, og regnes derfor som et svært viktig ...
(Master thesis / Masteroppgave, 2013)
La6WO12 shows relatively high proton and mixed proton-electron conductivity and the stoichiometry is modified to La28-xW4+xO54+1.5xv2-1.5x (La/W=5.3-5.7) to synthesize single phase. Acceptor doping this material may help ...
(Master thesis / Masteroppgave, 2013)
Mangel på gode transparente p-ledende oksider hindrer realisering av transparent elektronikk. Dette regnes derfor som et viktig forskningsmål internasjonalt. Hovedfokuset i denne oppgaven har vært å syntetisere og karakterisere ...
(Master thesis / Masteroppgave, 2013)
Tidligere studier har vist at Y-dopet BaZrO3 er en lovende protonleder, ettersom den kombinerer høy bulkledningsevne med god kjemisk stabilitet. Problemet med dette materialet er svært resistive korngrenser som resulterer ...
(Doctoral thesis / Doktoravhandling, 2014)
(Doctoral thesis / Doktoravhandling, 2020)
The capture and storage of solar energy in chemical form by a photoelectrochemical (PEC) cell is an elegant and simple solution to the increasing energy demands and needs for chemicals and fuels from non-fossil sources. ...
(Master thesis / Masteroppgave, 2016)
In miniaturized liquid chromatography (LC) an online clean up system and/or pre-concentration step, is essential to increase large loading capacity, loading speed could be used so the analysis is faster, and it is more ...
(Doctoral thesis / Doktoravhandling, 2013)
The thesis investigates the fundamental properties, i.e. ionic transport and hydration, of materials that can be used in sustainable energy production. Every production is confronted with new challenges and new opportunities. ...
(Master thesis / Masteroppgave, 2013)
Non-perovskite structured oxides are the promising candidates for fuel cell and/or gas separation membrane applications. Some of them exhibit mixed proton-electron conductivity and are stable towards CO2 and SO2/SO3 ...
(Master thesis / Masteroppgave, 2013)
London orbitals allows for non-perturbative treatment of magnetic fields. This can be used to explore how molecules behave in very strong finite magnetic fields, and also be used to probe complicated magnetic properties ...
Evaluation of the hydrazide enrichment method for N-linked glycoproteins in cancer cells by nano liquid chromatography mass spectrometry Restricted Access
(Master thesis / Masteroppgave, 2013)
Glycoproteins constitute an important part of the human proteome as they regulate e.g. cell-cell communication and recognition. These proteins are of great biological importance and commonly found in the cell membrane. ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
The human 8-oxoguanine DNA glycosylase OGG1 is involved in base excision repair (BER), one of several DNA repair mechanisms that may counteract the effects of chemo- and radiation therapy for the treatment of cancer. We ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)
(Master thesis / Masteroppgave, 2013)
(Master thesis / Masteroppgave, 2017)
Mekanistiske studier av reaksjoner mellom permanganationet og eten Restricted Access
(Master thesis / Masteroppgave, 2013)
Denne oppgaven omhandler mekanistiske studier av reaksjoner mellom permanganationet og eten. Reaksjonene er studert ved bruk av massespektrometri og kvantekjemiske metoder. Eksperimenter ved bruk av massespektrometri ...
Inner projection techniques for the low-cost handling of two-electron integrals in quantum chemistry
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2017)
The density-fitting technique for approximating electron-repulsion integrals relies on the quality of auxiliary basis sets. These are commonly obtained through data fitting, an approach that presents some shortcomings. On ...
(Master thesis / Masteroppgave, 2013)
(Master thesis / Masteroppgave, 2013)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
The thermoresponsive nature of aqueous solutions of poly(N‐isopropylacrylamide) (PNIPAAM) star polymers containing 2, 3, 4, and 6 arms has been investigated by turbidity, dynamic light scattering, rheology, and rheo‐SALS. ...
(Master thesis / Masteroppgave, 2013)
Micellization behavior and sol-gel transition of the new biocompatible, temperature and pH responsive penta-block terpolymers, PDEAEMAx-b-PNIPAAMy-b-PEGz-b-PNIPAAMy-b-PDEAEMAx synthesized by Atom Transfer Radical Polymerization ...
(Master thesis / Masteroppgave, 2013)
The platinum group elements (PGMs) Pt, Pd and Rh are used extensively in different industrial and technological applications. Particularly important is their use in autocatalysts in order to reduce emissions of harmful ...
(Master thesis / Masteroppgave, 2013)
This thesis is the review of my master work and experiments, as an essential part of a two-year MSc program at the University of Oslo. The work was conducted from September 2011 to August 2013 under the NAFUMA (Nanostructure ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
Polychlorinated biphenyls (PCBs) are persistent organic compounds that are ubiquitously found in the environment. Their use and manufacture were restricted or banned in many countries in the 1970±1980s, however, they still ...
(Master thesis / Masteroppgave, 2014)
GOx was, to the authors knowledge, for the first time successfully immobilized in DGS. The intrinsic fluorescence of GOx was measured in both solution and a sol-gel derived matrix in both the presence and absence of glucose. ...
(Master thesis / Masteroppgave, 2014)
(Master thesis / Masteroppgave, 2014)
Metallorganiske nettverksforbindelser (MOFer) har vært en forskningsområde ved Universitet i Oslo (UiO) de siste årene og en unik serie MOFer er blitt utviklet her. MOFene har blitt oppkalt etter UiO (UiO-66, UiO-67 og ...
(Master thesis / Masteroppgave, 2014)
(Master thesis / Masteroppgave, 2014)
In this study, association properties of aqueous solutions of anionic thermo-responsive hydrophobically end-capped amphiphilic triblock terpolymer n-octadecyl-poly(ethylene glycol)-poly(N-isopropyl acrylamide)-block-poly ...
Design og implementasjon av en automatisert prosess for produksjon av en fluor-18 radiotracer. Restricted Access
(Master thesis / Masteroppgave, 2014)
(Master thesis / Masteroppgave, 2013)
Masteroppgaven er en analyse av bruken av begrepet energi i norske lærebøker i naturfag, og hvordan kjemisk energi fremstilles i de samme bøkene. Lærebøker har en viktig plass i norsk skole, og både lærere og elever støtter ...
Isolation and identification of N-glycoproteins in pancreatic cancer cells by hydrazide chemistry and liquid chromatography tandam mass spectrometry Restricted Access
(Master thesis / Masteroppgave, 2013)
(Master thesis / Masteroppgave, 2013)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2011)
Double eigenvalues are not generic for matrices without any particular structure. A matrix depending linearly on a scalar parameter, Α + μΒ, will, however, generically have double eigenvalues for some values of the parameter ...
(Master thesis / Masteroppgave, 2014)
Stadig flere lider av livsstilssykdommer som forkalkning av blodårene, diabetes og fedme. Disse lidelsene fører ofte med seg de to hovedårsakene for dødsfall blant menn og kvinner, nemlig hjerte- og karsykdommer, og kreft. ...
(Master thesis / Masteroppgave, 2014)
Dette arbeidet utgjør en preliminær undersøkelse av muligheten for å stu- dere sorbentmobilitet i krystallitter av det metall-organiske rammeverket UiO-67, ved å måle selvdiffusjon med et lavfelt NMR-instrument (0,5 T). ...
(Doctoral thesis / Doktoravhandling, 2014)
Diazo compounds have great synthetic potential as versatile reagents in organic synthesis. The formation of Rh(II) carbenoids from diazo compounds allows the selective formation of C-C and C-heteroatom bonds and the ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
Metallacyclobutanes are an important class of organometallic intermediates, due to their role in olefin metathesis. They can have either planar or puckered rings associated with characteristic chemical and physical properties. ...
(Master thesis / Masteroppgave, 2013)
Langatate (LGT) is a piezoelectric oxide used in the high temperature region. As opposed to α-quartz, which is the most used piezoelectric today, langatate preserves its piezoelectric properties at temperatures up to 1470 ...
(Master thesis / Masteroppgave, 2013)
(Master thesis / Masteroppgave, 2016)
The cytochrome P450 enzyme, CYP27a1, converts cholesterol into 27-hydroxycholesterol, and both the metabolite and the enzyme are associated with breast cancer, promoting proliferation and metastasis. CYP27A1 is enriched ...
Effect of reduction in acid rain on phosphate loss-phosphate leached from agriculture soil and Al leaked from upstream acid forest soil Restricted Access
(Master thesis / Masteroppgave, 2012)
This master thesis was an integrated part of EUTROPIA. The specific aim of this present study is to enhance our understanding of the effects of reduction in acid rain on P-loss from agriculture soil due to reduced ...
(Master thesis / Masteroppgave, 2013)
(Doctoral thesis, 2015)
Amine-based CO2 capture has been proposed as a way of mitigating climate change. In this work, the fundamental processes governing the atmospheric gas phase chemistry of amines released from CO2 capture have been studiedusing ...
(Master thesis / Masteroppgave, 2013)
Metal complexes of N-heterocyclic carbenes are potential useful catalysts and are therefore of large interest. In this master thesis, it was attempted to synthesize several metal complexes bearing a new chelating N-heterocyclic ...
(Master thesis / Masteroppgave, 2016)
The main topics of this thesis are the surface kinetics and bulk diffusion of oxygen in Ba(1-x)Gd0.8La(0.2+x)Co2O(6-d) (BGLC). Previous work has identified BGLC as very promising electrode material for SOFC’s and electrolyzers. ...