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 ...

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 ...

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, ...

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 ...

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 ...

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, ...

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 ...

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 ...

Siden tusenårsskiftet har reaksjoner katalysert av ikke-metallholdige organiske molekyler (organokatalyse) økt i popularitet. Organokatalysatorer opererer under milde reaksjons betingelser og via flere aktiviseringsmoder. ...

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 ...

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 ...

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 ...

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 ...

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 ...

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. ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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. ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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. ...

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 ...

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 = ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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, ...

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 ...

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 ...

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 ...

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 ...

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 ...

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, ...

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 ...

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 ...

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 ...

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 ...

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 ...

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. ...