Arbetet är en undersökning av vilken isoleringsgrad i klimatskal som leder till den lägsta livscykelkostnaden för ett prefabricerat småhus över en 50 års period. Arbetet är utfört åt husleverantören Arkos International AB som bygger och levererar prefabricerade hus.Undersökningen är avgränsad till att endast undersöka variationer i klimatskalets ytterväggar och fönster. Resterande byggnadsdelar utgår från deras typiska utformning vid en vanlig beställning till Arkos. Undersökningen tar hänsyn till var i Sverige huset byggs och vilken uppvärmningsform som nyttjas. Detta för att försöka få resultatet relevant för kunder i hela Sverige.

On a request from the water sewage plant Gryaab in Gothenburg a power quality survey wasperformed. The voltages and currents have continuously been sampled in the incoming 10 kVsubstation HSP01 from April-August 2008. Power quality measurements were also performedin Gryaabs other 10 kV substation HSP04 fed from HSP01 and at the terminals of theinduction motor IN_PU4040 of 1.3 MW which controls one of the four large inflow pumps tothe plant. The reason for the latter measurement was due to registered negative transients eachtime the motor was connected to the grid. The cause of the transients could be explained by thecoupling in the substation, the ageing of the motor which could result in damage of thebearings or resonance in the motor circuit which amplifies high frequency harmonics.

On a request from the water sewage plant Gryaab in Gothenburg a power quality survey was performed. The voltages and currents have continuously been sampled in the incoming 10 kV substation HSP01 from April-August 2008. Power quality measurements were also performed in Gryaabs other 10 kV substation HSP04 fed from HSP01 and at the terminals of the induction motor IN_PU4040 of 1.3 MW which controls one of the four large inflow pumps to the plant. The reason for the latter measurement was due to registered negative transients each time the motor was connected to the grid. The cause of the transients could be explained by the coupling in the substation, the ageing of the motor which could result in damage of the bearings or resonance in the motor circuit which amplifies high frequency harmonics.

The report begins with a general inventory of possible technical faults in a hydropower plant and of possible fault indicating measurements. Then an investigation is made concerning a few different faults. Based on this investigation a choice on seal box condition and water leakage is made as problem for a more thorough examination, in which it is concluded that the turbine water leakage is larger when the turbine is put into operation. The examination ultimately results in a computer alarm for faults related to the seal box. Finally a few things are mentioned about flow measurement and pressure measurement in relation to the project as a whole..

Sitka spruce (Picea sitchensis) is a tree species that have its natural distribution along the West Coast of North America, from Alaska in the north to northern California in the south. Sitka spruce is a typical coastal tree species that can reach heights up to 85 meters and occurs in single pure as well as in mixed stands. The main purposes of this study were to describe the Sitka spruce growing characteristics and the volume production in comparison to spruce (Picea abies). The possibility to predict future volume production by using prognosis tools designed to be used on spruce were also studied. The material that has been used in this study are permanent sitka trials established by the Faculty of Forestry fixed Sitka trials and also material gathered in this study. A literature study was also carried out in order to determine the Sitka spruce growing characteristics. Sitka spruce has a high adaptation and a high volume production on a broad scale of soil types. The tree species is a pioneer species that has a fast early growth and in combination with sharp needles it is less susceptible to animal browsing than spruce. The factor that is the single most limiting factor for where the Sitka spruce can be planted is frost. This factor can be limited by using plant material with a well-suited provenance. According to the literature, the Sitka spruce has an average total volume production that is between 20-40% higher than spruce.

During the autumn of 2007 I attended a course in plantcomposition in Alnarp. The main task during the coursewas to make a proposal for a theme garden that was goingto represent the school at an exhibition in the GardenSociety in Göteborg, during the summer of 2008. Thetheme for the garden was set to ?sustainable development?and we had fully two weeks to work with the proposal.I won the competition and during the spring andsummer of 2008 I developed and realized my idea. Thegarden exhibition was inaugurated the 28th of June andwas open until the 28th of September.

Svenska Aerogel AB has developed the material Quartzene® which is of the typeprecipitated silica and contains calcium - magnesium silicate ((Ca, Mg) SiO3). Thematerial is used for molecular filtration of contaminated air. Qartzene?, which is inpellet form, is porous and has a high internal surface which is a requirement for themolecular filtration. With the use of various impregnations, filtration can affect thedesired outcome.

Ledinflammation är ett vanligt problem inom smågrisproduktionen, där cirka 10 % av alla födda smågrisar drabbas av ledinflammation under sin livstid. Ledinflammation orsakar både smärta hos grisen och ekonomiska förluster för lantbrukaren, genom nedsatt tillväxt och ökad arbetstid för behandlingar samt kostnader för medicin. En tidig och stor järninjektion har ansetts vara en bidragande orsak till ledinflammation bland vissa forskare. Överflödet av järn ger en gynnsam uppförökningsmiljö för bakterier. Järnet har flera funktioner i kroppen, bland annat i uppbyggnaden av blodet. Blodets röda färg kommer från hemoglobin som har till uppgift att transportera syre och koldioxid mellan lungorna och övriga vävnader.

The International Organization for Standardization (ISO) proposes vibration standards for the evaluation for machine damage due to vibration in rotational machines, where some vibration parameters are given to measure the vibrationgrade. This work evaluates the relevance of the vibration standards in hydro plants that are proposed by the ISO, and also investigates if there are methods used in other countries could have greater importance. Through statistical analysis of collected data we got a better understanding of relation among different vibration parameters, and also the importance of correct choice of the parameters for the evaluation of vibration. We have found that the vibration standards available today in hydro plants are not reliable for the judgment of vibration?s grade.

Ledinflammation är ett vanligt problem inom smågrisproduktionen, där cirka 10 % av alla födda smågrisar drabbas av ledinflammation under sin livstid. Ledinflammation orsakar både smärta hos grisen och ekonomiska förluster för lantbrukaren, genom nedsatt tillväxt och ökad arbetstid för behandlingar samt kostnader för medicin. En tidig och stor järninjektion har ansetts vara en bidragande orsak till ledinflammation bland vissa forskare. Överflödet av järn ger en gynnsam uppförökningsmiljö för bakterier. Järnet har flera funktioner i kroppen, bland annat i uppbyggnaden av blodet. Blodets röda färg kommer från hemoglobin som har till uppgift att transportera syre och koldioxid mellan lungorna och övriga vävnader.

The idea with constructions made out of prefabricated elements is that it should be quick and easy to build as the demands for lower production costs, increased profitability and shorter production times are constantly increasing. High accuracy in measurements and well-balanced tolerances is required to achieve this. The fact that the concrete-elements doesn?t fit and that damage occurs during assembly is a highly topical issue even though we now have methods and systems that make this high-intensity construction possible. Through this report we want to highlight the problems that cause the dimensional and tolerance problems and give suggestions on how to come to terms with these.

Due to historically low prices for electricity in Sweden, many small-scale hydropowerplants were closed down. A small-scale power plant has more or less the samemaintenance costs as larger plants, but doesn?t generate as much income. Today?sincreasing price for electricity in combination with a desire for renewable energysources makes small-scale hydropower interesting again.

There is a lot written about being hearing impaired. There are guidelines on how to adjust the indoor environment for the hearing impaired. There is even more written about gardening and garden design from different aspects. However, I found out that there is nothing written about garden design or adjusting the outdoor environment for the hearing impaired. At the background of myself being hearing impaired and garden designer I realised that I actually had adjusted my own garden out of the fact that I am hearing impaired.

A tight economy and a keen competition force the Swedish agricultur to do a structural rationalization. The quantity of farmers is less but the units are growing. How to make money I think some kind of niche is necessary. In my examwork I have locked how to farm herbaceous plant and the marking of herb to feedstuff for horses. Today health food and alternative medicine are accepted to use and there is an increase in demand. The Swedish market for herbaceous plants to horses is small and the products are mostly imported. But there is a group of consumers who is willing to pay a higer price for Swedish cultivated herbs. The only way to find out which herbaceous plants I could cultivate is to make a test cultivate. I think that the market for herbaceous plants is growing.

Horses are grazers with a digestive system that is adapted for a high fiber diet. Forage is a fiber rich feed that includes grass and legumes. A deficiency of forage and an excess of grains may cause gut disturbances and stereotypic behavior. The aim of this literature study was to summarize information on the horse?s capacity to consume forage-only diets with focus on the horse?s need of energy and protein.