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In this thesis, the importance of cobalt and humic substances of terrestrial origin for the growth of some bloom-forming marine phytoplankton species is examined. Cobalt (Co) is considered an essential and potentially limiting trace metal for phytoplankton growth and is needed for the synthesis of vitamin B12. Since Co can be mobilised from soils at low pH values, acidification may have led to an
Popular Abstract in Swedish Denna avhandling består av en undersökning av den litterära formen och den litterära kompositionen hos Johannes Klimakos Stege, samt en studie av hur författaren använder traditionen för att undervisa sin läsare. Förutom en kort introduktion och en genomgång av tidigare forskning, omfattar avhandlingen fyra kapitel. I det första kapitlet visas, utifrån ett antal detaljThis thesis offers an investigation of the literary form and the literary composition of The Ladder by John Climacus, as well as a study of how the author uses the tradition to form his reader. Besides a brief introduction with a survey of the previous research, the study comprises four chapters. In the first chapter it is shown, from a number of detailed text analyses, that the material in the s
During the last decades anthropogenic aerosol particles have attracted much attention due to their adverse health effects and their influence of climate change, and in Sweden, there are mainly three aerosol sources that affect the air quality; domestic wood combustion, traffic, and long distance transport, which includes new particle formation. This work concerns the characterization of these sour
It has previously been shown by the authors that the pre-chamber ignition technique operating with fuel-rich pre-chamber combustion strategy is a very effective means of extending the lean limit of combustion with excess air in heavy duty natural gas engines in order to improve indicated efficiency and reduce emissions. This article presents a study of the influence of pre-chamber volume and nozzl
Introduction The hotel check-in is usually treated as a facilitating service as it is often assumed only to facilitate the use of the core service i.e. the lodging. In addition the check-in is a highly standardized process, which is repeatedly performed every day. Being only one part of the front office’s duties executed at the reception desk, it is usually given scant attention from management. L
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Popular Abstract in Swedish Förbättrad bedömning av njurskador hos barn med urinvägsinfektioner Urinvägsinfektioner är vanliga och förekommer hos 1 - 4 % av alla barn. Urinvägsinfektion kan ge upphov till njurinflammation och ibland kvarstående njurskada (ärr) efter läkning. Det finns risk för fortskridande njurskada om det finns kvarstående njurskada efter en urinvägsinfektion, om barnet får uppThe aim of the present thesis was to define and evaluate a strategy for identification of children who are at risk of developing progressive renal lesions after acute pyelonephritis. Tc-DMSA renal scintigraphy is widely accepted as the most sensitive method for detecting parenchymal lesions and diagnosing acute pyelonephritis. Qualitative and quantitative evaluation standards were elaborated to i
Popular Abstract in Swedish I Big Bang, då vårt Universum skapades, bildades i princip endast de två lättaste grundämnena, väte och helium. Alla andra grundämnen har skapats, och skapas fortfarande, i olika typer av stjärnor under olika utvecklingsfaser. Detta betyder att precis alla atomer, förutom väte och helium, som bygger upp alla saker, växter, djur och människor i vår omgivning, har bildatsDisregarding the small primordial traces of the lightest elements, all metals have been formed in stellar processes, which means that the relative amount of metals in the Universe increases for every stellar generation. This build-up of elements is called chemical evolution and might be used both to constrain stellar models as well as understanding the formation and evolution of stellar population
Popular Abstract in Swedish Det övergripande syftet med denna avhandling var att undersöka om det tidsmässiga avståndet till olika handlingar och situationer påverkar människors moralbedömningar och etiska beslutsfattanden. Construal Level Theory (CLT; Trope & Liberman, 2003) postulerar att temporalt avlägsna händelser representeras på en mer abstrakt nivå än temporalt nära händelser. Denna föThe aim of this dissertation was to examine whether the temporal distance of moral events affects the moral judgments and decisions people make in response to those events. Drawing upon Construal Level Theory (CLT; Trope & Liberman, 2003) which posits that the distant future is represented at a higher, more abstract level of mental construal than the near future, and that high-level mental con
