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Angular Momentum Population in the Fragmentation of Pb-208 at 1 GeV/Nucleon

A systematic study of the population probabilities of microsecond isomers produced following the fragmentation of 208Pb projectiles at 1 GeV/nucleon has been undertaken at the SIS/FRS facility at GSI Darmstadt. Gamma decays from approximately 20 isomeric states, mainly in the rare-earth and transitional nuclei with A∼180, were identified and the corresponding isomeric ratios deduced. The results a

The Preservation of Favoured Morphs in the Struggle Between Sexes

Sexual selection is particularly likely to promote population divergence, because sexual traits are expected to be subject to rapid evolutionary change. Identifying the relative roles of particular barriers to the amount of total reproductive isolation between populations or closely related species can provide important clues to the mechanisms of population divergence and speciation Phenotypic tra

Field Trial in Italy. Evaluation of the effects of the SASPENCE system on driver behaviour.

This document describes the evaluation of the Safe Speed and Safe Distance system, developed in the framework of the SASPENCE subproject, considering driver behaviour, reactions and acceptance when driving with it in real traffic conditions. The findings show positive effects of the system in terms of fewer alarm situations, shorter alarm lengths, shorter reaction times, larger headway, better spe

Effects of enhanced ultraviolet-B radiation on subarctic ecosystems

Popular Abstract in Swedish I takt med att den stratosferiska ozonskikten tunnas ut når mera av solens skadliga ultraviolet-B strålning (UV-B, 280 - 320 nm) jordytan. I avhandlingen beskrivs det effekter av ökad UV-B strålning på komponenter (mossor) och processer (nedbrytning av förna, biomassa produktion, arternas samspel) i ekosystem på höga breddgrader. Experiment utfördes där en hed och en myBiologically harmful ultraviolet-B radiation (UV-B, 280-320 nm) is increasing at the Earth´s surface owing to stratospheric ozone depletion. This is of global concern due to potential impacts of enhanced UV-B radiation on the biosphere. The aim of this thesis was to investigate effects of enhanced UV-B radiation on components (bryophytes) and processes (decomposition, productivity, species interac