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Now showing items 701-800 of 921
(Master thesis / Masteroppgave, 2011)
In order to understand the single crystal X-ray structures of a series of synthetic peptides mimicking the Pro138-Gly144 segment of human AQP4 [1] , we have crystallized and determined the X-ray structures of some of these ...
(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 ...
(Doctoral thesis / Doktoravhandling, 2011)
This thesis shows that the indoor environment can significantly contribute to exposure to a type of environmental pollutants called perfluorinated compounds (PFC), although for most of us the highest intake comes from food, ...
(Doctoral thesis / Doktoravhandling, 2011)
During the last decade, there has been an increased concern of impact to human health from exposure to lubricants and organophosphates (OPs) for workers in the aviation industry. In spite of this concern, neither methods ...
(Doctoral thesis / Doktoravhandling, 2011)
(Doctoral thesis / Doktoravhandling, 2011)
The aim of this work was to investigate the potential of model materials designed by atomic layer deposition toward applications in catalysis research. Molybdenum based catalysts promoted with cobalt were selected as target ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2011)
Passive air samplers (PAS) were deployed at 86 European background sites during summer 2006 in order (i) to gain further insight into spatial patterns of persistent organic pollutants (POPs) in European background air and, ...
Investigation of Potential Hedgehog Signaling Pathway Inhibitors Restricted Access
(Master thesis / Masteroppgave, 2011)
The Hedgehog signaling pathway, first discovered in the fruit fly Drosophila melanogaster, was later found to be largely conserved in vertebrates and is crucial within diverse aspects of animal development, as well as for ...
(Master thesis / Masteroppgave, 2011)
(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, 2011)
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, 2011)
(Master thesis / Masteroppgave, 2011)
(Master thesis / Masteroppgave, 2011)
(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 ...
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 ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2011)
Background: Reproductive behaviors (such as age of childbearing, parity, and breastfeeding prevalence) have changed over the same historical time period as PCB emissions and may produce intergenerational differences in ...
(Doctoral thesis / Doktoravhandling, 2010)
Oxides with high ionic conductivity represent a class of functional materials with characteristics suitable for electrochemical energy converters, such as fuel cells and batteries. This work addresses effects from changes ...
(Master thesis / Masteroppgave, 2010)
Metylering av alkener og aromater med metanol over H-ZSM-5 og H-beta Restricted Access
(Master thesis / Masteroppgave, 2010)
I denne oppgaven er to ulike topologier studert, MFI og *BEA, hvor fire ulike materialer er benyttet, H-ZSM-5 I, H-beta I, H-ZSM-5 II og H-beta II. H-beta I og H-ZMS-5 I har omtrent samme tetthet av sure seter, Si/Al-forhold~130. ...
Hydrophilic interaction chromatographic separation of 8 deoxynucleotide triphosphates (dNTPs) and nucleotide triphosphates (NTPs). Restricted Access
(Master thesis / Masteroppgave, 2010)
Eight deoxynucleoside triphosphates (dNTPs) and nucleoside triphosphates (NTPs): ATP, CTP, GTP, UTP, dATP, dCTP, dGTP and dTTP, were separated using two 15 cm, 2.1. mm I.D. ZIC-pHILIC columns coupled in series, using simple ...
(Doctoral thesis / Doktoravhandling, 2010)
(Doctoral thesis / Doktoravhandling, 2010)
Catalysis by platinum Pt and other noble metals is involved in industrial processes that convert petroleum and natural gas resources to useful fuels and other value-added chemicals. The cleavage of carbon-hydrogen bonds ...
(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 / 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 / Masteroppgave, 2010)
(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 ...
(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, 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 / Masteroppgave, 2010)
(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, 2010)
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. ...
Extent, sources and evolution of groundwater salinization in Lower Shire area, Malawi Restricted Access
(Master thesis / Masteroppgave, 2010)
Abstract
Groundwater resources in the lower shire region in Malawi, Southern Africa, show high salinity. The sources of salinity and the mechanism of groundwater salinization in this inland region are not known. The main ...
(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, 2010)
(Master thesis / Masteroppgave, 2010)
Oppgaven presenterer en syntese av α-bromodiazoacetamider, laget fra sykliske, symmetriske aminer. De bromerte α-diazoacetamidene utgjør et nytt tilskudd til α-diazoacetamidene som er kjent i litteraturen. α-bromodiazoacetamidene ...
(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, 2010)
Several 6-aryl-9-benzylpurines have been shown to be selective antagonists for various adenosine receptors including A1, A2A, A2B and A3. The structures of the most active compounds resemble those screened in the Mycobacterium ...
(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 ...
(Doctoral thesis / Doktoravhandling, 2009)
Nye funksjonelle materialer er essensielle komponenter i fremtidens energiteknologi. Gruppe for faststoff elektrokjemi ved Kjemisk Institutt, Universitetet i Oslo, har i en årrekke ledet an i forskning på keramiske materialer ...
(Master thesis / Masteroppgave, 2009)
Organokatalyse er et felt i vekst etter at det ble gjenoppdaget rundt år 2000. Samtidig har immobilisert organokatalyse også blitt viet mer oppmerksomhet de siste ti årene. Til nå har det vært vanlig å immobilisere ...
(Master thesis / Masteroppgave, 2009)
Hovedmålet med denne oppgaven har vært å utforske ALD som en mulighet for å syntetisere lagdelte strukturer av α-Fe2O3 og FeTiO3. I tillegg har et helt nytt system for tilførsel av titantetraisopropoksid (Ti-tip) uten bruk ...
(Master thesis / Masteroppgave, 2009)
I dette arbeidet har de to til nå mest komplekse zeolittstrukturene som er kjent, TNU-9 (TUN) og IM-5 (IMF), blitt syntetisert. Forsøk på syntese av ITQ-13 har også blitt utført.
Alle de tre strukturene har egenskaper som ...
Investigations into new degasser technology for SISAK Restricted Access
(Master thesis / Masteroppgave, 2009)
Prototypen på et nytt væske-ekstraksjonssystem (microSISAK) for benytting i studier av kortlivede radionuklider har blitt utprøvd på langlivede nuklider. Studiene ble gjennomført ved institutt for kjernekjemi ved universitetet ...
(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 ...
(Doctoral thesis / Doktoravhandling, 2009)
Nøyaktige simuleringer av kjemiske og biologiske prosesser på molekylært nivå har lenge vært uoppnålig for en rekke molekylære systemer, og har nå blitt mulig for mange av disse systemene gjennom ny metodeutvikling av ...
(Doctoral thesis / Doktoravhandling, 2009)
To concluse, the work presented in this thesis is a contribution to the understanding and testing of DFT functionals (and also other computational methods) for the calculation of second-order magnetic properties. Vibrational ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2009)
The electronic structure and optical properties of orthorhombic, monoclinic, and rhombohedral (corundum type) modifications of ZnSiO3, and of rhombohedral, tetragonal, and cubic (spinel type) modifications of Zn2SiO4 have ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2009)
We present a study of the electronic structure and optical properties of Si3N4 and Si2N3H in crystalline and amorphous phases by first-principles calculations. We find that besides structural disorder those matrix atoms ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2009)
A key feature of POPs (Persistent Organic Pollutants) is their potential for long-range atmospheric transport. In order to better understand and predict atmospheric source-receptor relationships of POPs, we have modified ...
Development of a LC-MS/MS method for comparing brain tumour samples Restricted Access
(Master thesis / Masteroppgave, 2009)
(Master thesis / Masteroppgave, 2009)
ABSTRACT
In this study, 6-chloropurines with varied substituents in the 2 and 9 or 7 positions were functionalized in the 8-position. This was done via lithiation and subsequent bromination to form 8-brominated purines.
It ...
(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 ...
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 / 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 ...
(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, 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, 2009)
(Master thesis / Masteroppgave, 2009)
(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 ...
(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 / 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, 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, 2009)
(Master thesis / Masteroppgave, 2008)
Chinas fast-growing economy has led to an increase in the releases of many heavy metals. These releases affect both the local environment through soil and water contamination, but also the regional and global environment ...
(Master thesis / Masteroppgave, 2008)
Some types of cancers are more difficult to treat than others, and to date, there is no general accepted standard approach how to treat pancreatic cancer. The aim of this project was to
construct an immunotoxin with an ...
(Master thesis / Masteroppgave, 2008)
Den siste tiden har inhibitorer av reopptakstransportører for nevrotransmittere blitt viet stor oppmerksomhet. Det er gjort mange forsøk på å finne nye forbindelser, ettersom denne typen inhibitorer kan ha interessante ...
(Master thesis / Masteroppgave, 2008)
A reversed phase capillary liquid chromatography (cLC) method using large volume injection (column switching) has been developed the determination of low concentration of adenosine in aqueous samples. The injection volume ...
Syntese av høysilika CHA-zeolitter med kontrollert Si/Al-forhold og partikkelstørrelse Restricted Access
(Master thesis / Masteroppgave, 2008)
I denne masteroppgaven er zeolitter med CHA-topologi syntetisert med et Si/Al-forhold fra 14 til 133. Dette fyller et sammensetningsområde som ikke tidligere er rapportert. Kjemiske analyser viser en nær lineær sammenheng ...
(Master thesis / Masteroppgave, 2008)
The stolen Scream painting of Edvard Munch was restored and in the restoration work of the damages on the painting, a glue of the materials which have to be somewhat identical to the glue that Munch used in the Scream ...
Investigations of a Metallic Interconnect Material for High Temperature Proton Conducting Fuel Cells
(Master thesis / Masteroppgave, 2008)
(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 ...
Syntese av Li-holdige filmer med ALCVD Restricted Access
(Master thesis / Masteroppgave, 2008)
(Doctoral thesis / Doktoravhandling, 2008)
Polymers are large molecules composed of repeating structural units connected by covalent chemical bonds. Biopolymers are a class of polymers produced by living organisms, which exhibit both biocompatible and biodegradable ...
(Master thesis / Masteroppgave, 2008)
(Master thesis / Masteroppgave, 2008)
About 60% of the Chinese population lives in rural areas, where biomass and coal are the main sources of energy for cooking and heating. Indoor air pollution from household fuel burning is a major health concern, responsible ...
(Master thesis / Masteroppgave, 2008)
The aggregation and disaggregation caused by temperature and shear rate in aqueous solutions of the thermoresponsive methoxy-poly(ethylene glycol)-block-poly(N-isopropylacrylamide) (MPEG53-b-PNIPAAM113) copolymer was studied ...
(Master thesis / Masteroppgave, 2008)
Ni/SiO2 and Ni/Mg(Al)O catalysts with difference metal loadings have been prepared. The activity, selectivity and stability of supported Ni catalysts for propane dry reforming to syngas reaction were investigated by catalytic ...
(Master thesis / Masteroppgave, 2008)
6-Aryl-9-substituted benzylpurines as antimycobacterial agents have been previously studied in our group.1-5 The structural activity relationship (SAR) of antimycobacterial purines is generally well understood5 (Figure 1, ...
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 ...
Prestudy of Potential Surface Water Acidification in Northeast China Restricted Access
(Master thesis / Masteroppgave, 2008)
During the past several decades, the amount of SO2 emission in China has steadily increased. The big forest areas in northeast China, located in Hei Longjiang and Ji Lin provinces, are hereby receiving an increasing amount ...
(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, 2008)
The aim of this project was to investigate molecular imprinted polymers (MIPs) for their potential use in a two-dimensional (2D) capillary liquid chromatography (cLC) system for the simultaneous determination of prostaglandins ...
(Master thesis / Masteroppgave, 2008)
(Master thesis / Masteroppgave, 2007)
ABSTRACT
In forensic toxicology it is important to have a specific and reliable detection of illicit drugs in biological species. At Norwegian Institute of Public Health (NIPH), Department of Drug Analysis, urine samples ...
(Master thesis / Masteroppgave, 2007)
SAMMENDRAG
Plastposer og plastfolier laget fra polyetylen (PE) er ofte gjenstand for bevismateriale i kriminalsaker, enten det er innhentet fra et åsted eller beslaglagt fra personer. Å kunne spore plastmaterialet, ...
(Master thesis / Masteroppgave, 2007)
Sammensetning og egenskaper til DNOM i vann varierer med nedbørfeltets karakter. Vegetasjon, geologi, topografi og klima, særlig temperatur og nedbør virker inn på de
fysiokjemiske egenskapene til DNOM. Hensikten med denne ...
(Master thesis / Masteroppgave, 2007)
A novel extraction and clean-up method has been developed for the determination of paralytic shellfish poisoning (PSP) toxins in shellfish samples. Raw shellfish material was extracted with an acidic acetonitrile/water ...
(Master thesis / Masteroppgave, 2007)
(Master thesis / Masteroppgave, 2007)
The work is based on possible protonic transport in LaNb3O9. This ABO3–type perovskite is known to have large voids in the lattice due to many inherent A-site metal vacancies. Acceptor-doping of this material may facilitate ...
(Doctoral thesis / Doktoravhandling, 2007)
Tracers of Nb, Ta, and the pseudo-homologue Pa were used to model the chemical behaviour of dubnium in the development of suitable liquid-liquid extraction systems for the SISAK centrifuge system. Extraction from sulphuric ...
(Doctoral thesis / Doktoravhandling, 2007)
(Book / Bok / PublishedVersion, 2007)
Interstellare aminosyre-prekursorer studert med mikrobølgespektroskopi og kvantekjemiske beregninger
(Master thesis / Hovedoppgave, 2007)
The main objective of the work for this thesis was to establish the foundation for detection of the amino acid precursor Z-3-amino-2-propenenitrile in interstellar space. Detection of compounds in interstellar space is ...
(Master thesis / Masteroppgave, 2007)
Antimikrobielle peptider produsert av melkesyrebakterierer en gruppe forbindelser som er av interesse innenfor næringsmiddelindustri og medisin. To-peptidbakteriociner er en gruppe peptider som hører inn under disse. ...