A titania-supported nickel catalyst was prepared and tested in methanation in order to evaluate its catalytic properties (activity, selectivity and specially, activity loss), and compare it with an alumina-supported nickel catalyst.The titania-supported catalyst did not only show higher stability than alumina, but also presented a different cause of deactivation, carbon formation. In addition, a kinetic model was obtained for the titania-supported catalyst, and a study of the effect of different operating conditions (temperature, composition and partial pressures of synthesis gas and water) on the deactivation rate and carbon formation of this catalyst was performed.

In a world of ?formal organizations?, which is constantly exposed for institutionalized super standards and ideas of a what a modern orgnization should be like, the pressure for changes are strong. This is the environment in which Lund University finds itself. Ideas in the beginning of the 21-century is concerning a stronger emfasis on steering, centralisation, re-hieriarchyzation, standardised processes and a new regulation concerning internal control. Through theories of new institutionalism, with conceptions as organizational identity and the expectations of adapting to new ideas, can you track the translation and adaptation that the ideas go through at the university- a decentralised organization where not only freedom has been a concept for the academic parts, but also for the administration.

Familjeutredare på akut- och utredningshem är en yrkesgrupp som arbetar med utredning av föräldrars omsorgsförmåga. I arbetet träffar familjeutredaren dagligen människor som befinner sig i svåra livsskeenden. Detta ställer krav på familjeutredarens förmåga att hantera emotioner. Studiens syfte var att bidra till en djupare förståelse för familjeutredares emotionella lönearbete, vilka emotionella krav som ställs och hur de hanterar det. Studien utgick från Grundad teori (GT) och datainsamling innefattade sju semistrukturerade intervjuer.

Utvärderandet av instrument och metoder är väsentligt för att avgöra validiteten och reliabiliteten av studiers resultat. I den här studien utvärderades delskalan Emotional Regulation. Delskalan ingår i Social Competence Scale (Corrigan, 2003) och användes som underlag för observationer av barn i åldern 4-5 år inom implementeringsförsöket av preventionsprogrammet PsPATHS i Sverige. Totalt deltog 132 barn vid två separata observationstillfällen. Två explorativa faktoranalyser med olika estimationsmetoder (ML och GLS) resulterade i en enfaktorslösning.

This essay focuses on the technical systems and functions behind how a Roman bath operated. I will present a general view by going through each part of the waters path through the bath one by one. Since there is no such thing as a standardised Roman bath I will, under each headline, present the sub subject with a presentation of the workings and then exemplifying through archaeological findings and ancient literary sources.This essay is therefore meant to present a thorough and clear presentation of the technical aspects of a roman bath. The aim is to give the reader an understanding of how a bathhouse worked in general and why. To this I want to present problems that the Romans were faced with and how they solved them..

At nuclear power plants, electrical valve actuators are important for ensuring that the reactor core is water covered and the pressure in the reactor tank and containment is limited. The electrical actuators are provided with overload protection in case of drawing higher current then the motors are rated for. When safety manoeuvres are needed, the overload protection must not trig and cause the valve to stop before completing the manoeuvre. Analyses have showed that the current settings of the overload protection may cause an illegitimate trig at the worst theoretically possible accident. A new method has been developed with conservative assumptions and applies overload protections for all electrical valve actuators at the three reactors in Forsmark..

Syftet med denna studie var att undersöka relationen mellan ogiltig skolfrånvaro och grad av psykologiska, emotionella och sociala resurser. Vi undersökte både hemmasittande ungdomar (N = 13) och normalpopulation (N = 235) i två delstudier med en enkätbaserad tvärsnittsdesign. Resultatet visade att hemmasittande ungdomar upplevde mycket låg grad av psykologiska resurser. Resultaten visade även att graden av ogiltig skolfrånvaro hängde samman med graden av psykologiska resurser. Ogiltig skolfrånvaro hängde även till viss del samman med sociala och emotionella resurser.

I have done a follow up study of the restoration of two rivers, Röälven and Grundan, in order to evaluate the effects of the restoration on the endemic population of trout. Both rivers have been used for timber floating during many years throughout the 20th century, and because of this, had all obstacles such as rocks and wood parts removed. In 2004-2005 both rivers were restored, and rocks and wood were put back into the rivers. Spawning grounds were created and boulder dams were constructed to promote the streaming water. The result showed that the trout population of both rivers increased after the restoration, but also that the trout population of Röälven increased more than that of Grundan.

Föryngring av skog är en nödvändig, men kostsam åtgärd och därför är det eftersträvansvärt att hitta en föryngringsmetod som är både kostnadseffektiv och ger en bra föryngring. Ett sätt att få en billigare föryngringsåtgärd är att använda frösådd. Vid en lyckad sådd gör det stora plantuppslaget att plantorna får bra förutsättningar för god kvalitet. Dessa plantor får dessutom bättre rotutveckling och stabilitet än planterade plantor. Användningen av skogssådd är dock begränsad av bl.a.

This thesis investigates how lobbying influences the European Union Strategy for Sustainable and Circular Textiles (2020-2025). It asks which actors dominate, what strategies they use, and how these patterns can be explained by pluralism, corporatism, new institutionalism, and Kl?ver?s exchange logic. Using a qualitative case study with process tracing and text analysis, the study examines consultation data, official EU documents, and transparency reports. Findings show that commercial actors dominate consultations and expert groups, prioritising product-focused measures over systemic change, while transparency gaps enable informal influence.

The aim of this thesis was to answer a number of questions about the environmental consequences of aircraft de-icing. A further aim was to suggest how the environmental consequences due to the release of de-icing fluids can be measured and reduced.The main impact of the aircraft de-icing on the environment is due to the large oxygen demand for the degradation of glycol based de-icing fluids which are released in the environment. The effect of the increase in oxygen demand depends on where the degradation occurs in the ecosystem. In a sensitive ecosystem, the large demand of oxygen could provide an anaerobic environment which would be harmful for many types of organisms.In order to reduce the negative effects of the applied de-icing fluid, there is some type of collection system at every regular airport in Sweden. The methods of collection can be divided into two general groups, hydrological isolation or vacuum sweeper trucks.

Sweden is a member of the European Union (EU) since 1995. The association results in considerable proportions of the European law, also called EC-law, for Sweden. The legal system has precedence above Swedish law, which forces our national court to take consideration into and interpret the law in the light of EC-law.Sweden doesn?t possess a general legislation of discrimination. An appointed committee investigates the matter and the requirement of a common law, including all discrimination prohibits.

Det svenska artilleriet är på väg att införa ett nytt haubitssystem till artilleribataljonerna. Det är inte bara ett nytt haubitssystem som är under införande utan också ett nytt reglemente. Det reglemente som finns idag är Förhandsutgåva Artillerireglemente Artilleribataljon 2012 och som titeln avslöjar är det en förhandsutgåva. Syftet med detta arbete är att analysera hur de grundläggande förmågorna tydliggörs i reglementet idag i jämförelse med reglementets föregångare Artillerireglemente Artilleribataljon 1985. Hur skildras de grundläggande förmågorna i reglementena och skiljer sig taktiken kopplat mot förmågorna idag mot den vi hade på 80-talet? Genom en kvalitativ textanalys av reglementena med grund ur 1985-års upplaga kommer utvalda delar att jämföras och analyseras.

Discharge of untreated wastewater leads to unnaturally high levels of nitrogen and phosphorus in rivers, lakes and the sea, which results in unbalanced ecosystems with eutrophication and lack of oxygen. Part of the phosphorus in surface waters is coming from on-site wastewater treatment from scattered households with unsatisfactory purification. Blast furnace slag is a by-product from iron production, and has in laboratory trials showed good phosphorus binding capacity. To test blast furnace slag as a reactive filter media for phosphorus separation in a full scale experiment, a wastewater treatment plant has been built behind the picnic area at Ångersjön alongside the road E4 in central-eastern Sweden. The plant contains two parallel lines, one with blast furnaces slag and the other with Filtralite-P as phosphorus sorbent. Both filters have showed decreasing phosphorus purification effect with time in spite of a low wastewater load.

The purpose of this thesis is to shed light on a present trend of professionalization in Swedish local environmental politics, which have recently seen a decline in active participation of the citizens in favor of an increased governmental regulation. With the aim to closer investigate this relatively new phenomenon, the paper is a qualitative single case-study of environmental policies in the Swedish municipality of Karlskrona. In this case, the municipality is obviously balancing between regarding the interests of the national level and the interests of its own citizens at the same time. This motivates the use of system-theory, and relates to the classical political paradox between participation and efficiency which is also a present theme in the paper.This text-analysis based on interviews with personnel and documents from the municipality shows a visible trend of professionalization in the local politics of the municipality of Karlskrona, from a large grade of participation and a strong bottom-up approach in the days of Agenda 21 to now being more strongly top-down defined by national environmental objectives and principally operated on a professional level..