To monitor chemical changes in brain occurring during stress, several rats were put to death in both stressed and non-stressed situations. According to age it was desirable to see which effects stress constitutes in a rat ...

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 ...

This study was conducted to determine whether the physio-chemical properties of dissolved natural organic matter (DNOM) of similar origin are affected by the dissolved organic carbon (DOC) sample concentration and time in ...

SAMMENDRAG Dette arbeidet har tatt for seg for seg oligomerisering av 1-buten, propen og eten over de fire protonsure zeolittene H-Beta, H-ZSM-5, H-USY og H-MOR. Forsøkene har blitt utført i et reaktoranlegg med 1 atm som ...

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 ...

A review on the use of packed capillary columns in gas chromatography (GC) is presented. Several articles on the invention of packed capillary columns have been published, as well as on the progress and the development of ...

Ammoniakk ble syntetisert fra hydrogen og nitrogen i en elektrokjemisk reaktor basert på et protonledende oksid ved atmosfærisk trykk. I reaktoren, som var sammensatt av to avskilte kamre, ble hydrogen oksidert på anoden ...

A spirane is an orthogonal structure where two rings share one common atom. The spirane framework is rigid, and as a consequence spiranes are potentially useful as rigid frameworks for attachment of coordination functions ...

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. ...

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, ...