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.

The purpose of this investigation was to find out more about students? spontaneous ideas about properties and transformations of matter. Examples of matter chosen are such which students know about from everyday life and focus is mainly on the questions if students know that all matter has weight and that matter is preserved in transformations.The method used is semi structured qualitative interviews with individual students. Different experiments were carried out together with the students who afterwards were interviewed. However, the students show varying answers and no generalizations can be done.

Miljonprogram is a Swedish building program from 1964 to 1975. During that time about a million homes were constructed. Now, almost 50 years later, they are in desperate need of renovation. In order to fulfil the Swedish environmental objective to decrease energy consumption 50 per cent until 2050, considerable housing stock built under the Miljonprogram has to be renovated.Focus in this thesis is on the building services and theirs profitability that can decrease energy consumption in households build during the Miljonprogram. Building construction is not considered in this report.

In order to optimize calf welfare and health it is important to know the behavior of cattle in free ranging conditions. When the cow is about to give birth to a calf she will leave the heard about 12 hours before. It is then rather obvious that isolating the cow about calving time in a single pen is imitating the cows? natural behavior. To save space and minimize building cost it?s common that the farmers build calving pens for four of five cows especially at larger farms.

The purpose of this thesis is to investigate respectability and the construction of ?free love? in Swedish feminist debater and playwright Frida Stéenhoff?s (1865?1945) drama Lejonets unge (1896). In 1897 the first production of the drama was set in the small town of Sundsvall in Sweden and caused a public storm be-cause of its plea for free love for both men and women.Through an intersectional perspective, where the axes of class, gender, sexual-ity, religion, nationality and age are central and with a starting point in Beverly Skegg?s concept ?respectability? I investigate how ?free love? is constructed in the drama. I also link the construction of ?free love? to the historical context of the debate concerning sexual morality and marriage which was intense in society and literature in Scandinavia in the late 19th century.In the drama the plea for ?free love? is created mainly through the character Saga Leire.

With the days DGPS-technology can a position of 5 centimetres decides. With this exactly position is the technology very interesting for the agriculture. I think this technology can come more and more in the future. You can also move the fact and information further to the spreader, sprayer and seeders. If the combine is equipped with harvest accounting, can you with help of the system make harvest maps.

Detta arbete undersöker Sveriges val att delta med stridsflyg i Libyen-kriget 2011. Syftet är att öka förståelsen för beslutsprocessen och för orsakerna till beslutet. En holistisk enfallstudie av besluts-processen genomförs utifrån perspektiven möjlighet och vilja, vilka tar sin grund i en teori som ut-vecklats av Harvey Starr. En teoriutveckling genomförs med en kunskapsöversikt över tidigare forskningsresultat på det studerade fallet som grund. Orsakskategorier skapas vilka sedan används i analysen av empirin.

With growing economies and better living standards in many parts of the world today, there is a need of expanding the capacity of generating electricity. The alternatives for renewable energy technologies are not fully developed and have still some problems to conquer.The company Minesto has developed a technology that is called Deep Green. It is designed to gain electricity from tidal currents. Deep Green works in a similar way as a kite that is attached to the seafloor with a moving wire. It contains of a wing that moves due to the water current.

Det sägs att en fjärils vingslag i Brasilien kan utlösa en storm i Texas. I vår alltmer globaliserade samtid ligger det troligen mer sanning i det sagda än någonsin tidigare. Föremålet för föreliggande uppsatsen är en rättsgrundsats ? en av Högsta domstolen etablerad rättsprincip ? betecknad påståendedoktrinen, närmare bestämt doktrinens betydelse i skiljetvister i allmänhet och i investeringstvister i synnerhet. Bakgrunden till de problemställningar varom uppsatsen handlar står att finna i Högsta domstolens avgörande NJA 2008 s 406, vari Högsta domstolen, med undanröjande av skiljenämndens dom, gjorde följande synnerligen intressanta uttalande: ?Det är en etablerad grundsats i svensk rätt att skiljemännen vid [behörighetsprövningen] skall tillämpa påståendedoktrinen.

I dagsläget när intresset för miljövänlig energi ökar, ses den småskaliga vattenkraften som ett sätt att minska Sveriges import av energi. I Sverige finns det tusentals nedlagda kvarnar och små vattenkraftstationer som med små medel skulle kunna börja leverera energi. I Björkefall i Olofströms kommun finns en privatägd och övergiven kvarn. Detta arbete undersöker möjligheterna till en småskalig vattenkraftstation i denna åt Olofströms Kraft AB.Småskalig, vattenkraft, elkraft, generator, turbin .

På några sekunder förändras livet när någon i ens närhet drabbas av hjärtinfarkt. Sjuksköterskor möter i sitt arbete närstående till drabbade. Studier visar att sjuksköterskor upplever svårigheter att möta närstående och det saknas kunskap om deras upplevelser, vilka behov de har och vilket bemötande de önskar få. Syftet är att beskriva närståendes upplevelser av att leva med en person som drabbats av hjärtinfarkt. Metoden är en litteraturstudie med kvalitativ ansats.

The corn plant came to Europe with Christopher Columbus in the 14th century and have ever since bin cropped here, but corn haven?t bin very common in Scandinavia until recently. The mainly use for this crop silage but even corn for grain is cropped in Europe. Corn for grain is a common part of feed in beef and chicken farming. In Sweden corn for grain is pretty rare but almost 1000 hectares are used for this crop, Lantmännen Sverige is the biggest buyer of corn at the moment.

The limit for mercury in fish, set by health authorities, is exceeded in about half of the lakes in Sweden. Methyl mercury (MeHg) is the most toxic form of mercury and accumulates in fish. Therefore transformation of inorganic mercury (Hg) to methylmercury (MeHg) is an important process that we need to understand in order to possibly counteract the negative effects of mercury in the environment. The seasonal dynamics of mercury biogeochemistry is likely of great importance for the accumulation of MeHg in the aquatic food web. In thesis the chemical speciation and transformations of Hg and MeHg in bottom waters and sediments is followed in Ängessjön, a small lake located on the east coast in the middle of Sweden. The lake is not directly affected by any industrial pollution and concentrations of Hg in the sediment reflect the atmospheric deposition in this area, as well as processes taking place along the hydrological pathways from soil to lake. Samples from sediment, bottom- and streamwater were collected in average every second month during the period Feb.

Today the individual ventilated cage system (IVC-system) is the most commonly used system when housing rodents. IVC systems are designed to control both supply and exhausted air at cage level, as well as temperature and relative humidity in the cages. This creates an optimal environment for the mouse and at the same time a protection against the risk of cross-infection between cages and the outside environment. The aim of this study was to evaluate the health and welfare for two different strains of laboratory mice (NMRI nude mice and C57BL/6NCrl mice) in three different kinds of IVC-systems; Arrowmight, Allentown and Tecniplast. 108 mouse pups from each strain (in total 216 mice) were selected after weaning at an age of three weeks and tested during 5 weeks.

Hösten 2013 stormade det i Sverige ett flertal gånger. En av dem, stormen Ivar, fällde 4,3 miljoner skogskubikmeter privatägd skog med kärnområde i Medelpad och Jämtland. De senaste åren har varit stormtäta och en mängd erfarenheter finns från att hantera stormarnas konsekvenser. Dock saknas forskning om hur skogsägarna resonerar efter en storm och upp-lever de stormtjänster som erbjuds, vilket lade grunden för detta examensarbete. Syftet var därför att ta reda på och förklara hur skogsägarna upplevde stormen Ivar från stormtillfället till nästan ett år efter stormens framfart, vad som påverkar den upplevda tjänstekvaliteten och hur framtidens stormtjänst bör se ut.