DFT calculations with the well-tested OLYP and B3LYP* exchange-correlation functionals (along with D3 dispersion corrections and all-electron ZORA STO-TZ2P basis sets) and careful use of group theory have led to significant insights into the question of metal- versus ligand-centered redox in Co and Ni B,C-tetradehydrocorrin complexes. For the cationic complexes, both metals occur in their low-spin ...

A survey was conducted testing the aptitude of neural networks to recognize human faces. The motivation for this a study is the possibility of designing automatic security systems. Pictures of 511 subjects were collected. The pictures captured both profiles and many natural expressions of the subject. Some of the subjects were wearing glasses, sunglasses or hats in some of the pictures. The images ...

DNA ligases, the enzymes responsible for joining breaks in the phosphodiester backbone of DNA during replication and repair, vary considerably in size and structure. The smallest members of this enzyme class carry out their functions with pared-down protein scaffolds comprising only the core catalytic domains. Here we use sequence similarity network analysis of minimal DNA ligases from all biological ...

Observasjoner av Vega og Fomalhaut tyder på at de har støvbelter rundt seg. Avstanden fra stjerna er rundt 0,2 astronomiske enheter (AE) og størrelsen til støvpartiklene varierer fra noen nanometer til noen mikrometer. Slikt støv fins også i solsystemet. Denne oppgaven handler om å beregne banen til slike støvpartikler etter danning. Det antas at støvet påvirkes av tre krefter: gravitasjon, ...

In recent years several serious near-misses with major hazard accident potential have happened on the Norwegian Continental Shelf, many of them hydrocarbon leaks. Research has shown that many of these are caused by manual intervention. Despite this fact, current focus in QRAs and have been for a long time, are on technical systems. This is despite recent trends showing no decline in risk level. A ...

Offshore petroleum exploration has increased the risks of oil spills in coastal tropical and subtropical habitats. Monitoring tools are needed to assess and protect environmental health. We determined baseline values of antioxidant biomarkers (CAT, SOD, GPx, GST, MDA) for five ecologically relevant species in a subtropical system in southern Brazil. Regional baseline levels are compared with literature ...

Subsequent to a widespread hiatus at the top of the Permian on western Svalbard, the Triassic Vardebukta, Tvillingodden and Bravaisberget formations were deposited. In this thesis, the sedimentology, geochemistry and diagenesis are investigated to determine the depositional environment and basinal setting of the Triassic deposits. In the investigated profile on Mariaholmen, only the upper part ...

The goal of this thesis is analyse the incidence rate of the first ever myocardial infarction (MI) and the survival time after the MI. The data used for this purpose is from the Troms\o{} study surveys collected in the period from 1974 to 2008. This thesis provides a general introduction to latent Gaussian models and the methodology of integrated nested Laplace approximation. Specifically, the data ...

We study the effect of changing the separation grid bias in a double plasma device from -50 V to the same bias as the anode in the source chamber, 115 V on the plasma and beam parameters downstream in the target chamber. Two different probes were used to analyze the downstream plasma. We used an RFEA-probe to obtain information about the ions, such as the ion energy distribution and we constructed ...