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 ...

Nye materialer med bedre egenskaper og nye bruksområder søkes kontinuerlig av forskningsgrupper rundt om i verden. Blant disse er ferroelektriske/piezoelektriske materialer med perovskittype struktur av stor interesse for ...

The physiological role of the serotonin receptor 5-ht1E is not yet understood, and little is known about its pharmacological effects. An aim of this project has been to establish a new synthetic route to potential 5-ht1E ...

The 5-ht1E receptor is one of the least known serotonin receptors. Little has been reported about its pharmacological effects and the physiological role is not known. One of the reasons for this is that no selective agonists ...

ABSTRACT The main aim for the work on this thesis was to find a fast and sensitive method for qualitative and quantitative determination of the naphthenic acids (NAs) called the ARN acid family in crude oil. As there are ...

Kvikksølv har en rekke ugunstige effekter på menneskelig helse. Dette har de siste tiårene ført til at det har blitt gjennomført reduksjoner i kvikksølvutslipp. Det meste av mobilt kvikksølv i dag er gjort mobilt av ...

Industrial development in China has accelerated rapidly in the last few decades. This has led to a range of environmental problems. Deposition of trace metals to forest ecosystems via the atmosphere is a potential regional ...

Okadaic acid (OA) and dinophysistoxins (DTXs) are a group of polyethers known to sometimes contaminate filter-feeding shellfish that cause symptoms classified as diarrhetic shellfish poisoning. The algae Dinophysis acuta ...

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 ...

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 ...

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. ...

Agelasiner er 7,9-dialkylerte puriniumsalter, som først bøle isolert fra marine svamper av Agelas familien. Svamper og andre marine organismer er viktige kilder til molekyler med interessante biologiske effekter. Bakterier ...

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 ...

Sammendrag Oppgaven har fokusert på synteseteknikker for fremstilling av monodisperse frittstående nanokuber av Co3O4 og deponering av oksidiske materialer på nanokrystaller med ALCVD (Atomic Layer Chemical Vapour ...

Sammendrag Koordinasjonspolymere (CPO; coordination polymer), metalorganiske nettverk forbindelser (MOF; metal organic framework structure) og uorganiske-organiske hybridforbindelser utgjør fort voksende grupper av nye ...

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 ...

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 ...

Det er gjennomført en kvantekjemisk undersøkelse av rutherfordiumsulfatkompleksene som dannes i vannfasen i seperasjonsystemet SISAK. De tre mulige sulfatkompleksene [M(SO4)(H2O)6]2+, [M(SO4)2(H2O)4] og [M(SO4)3(H2O)2]2-, ...

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 ...

I dette arbeidet skulle interaksjoner mellom den vannløselige delen av naturlig organisk materiale (DNOM) og kvikksølv (Hg2+) studeres. Det ble brukt gel-kromatografi (Sephadex™-gel G-25 medium) for å fraksjonere fire ...

Abstract A robust, fast and sensitive capillary column switching reversed-phase (RP) liquid chromatography (LC) method with back flushing of the pre-column and ultraviolet (UV) detection has been developed to investigate ...

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 ...

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 ...

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 ...

Magnetoresistance, electrical transport, and magnetic properties associated with a two-step Verwey-type transition in BaGdFe 2 O 5 + w (− 0.015 < w < 0.181 ) are studied as a function of temperature and oxygen nonstoichiometry ...