In the early 80s, several new synthetic materials have come to be used in the treatment of canvaspaintings, among them Plextol D 360, Plexisol P 550 and Beva 371. Today, many conservatorsfind the information about the long term sustainability of these binding mediums to beincomplete. Evaluation of synthetic materials is mostly done through clinical research, sometimesartificial aging is simulated. The correlation between artificial and natural aging is however notestablished, useful information can therefore be gained through evaluations of actualconservation treatments. The intention of this study is to find out more about how thementioned products perform over time in normal museum conditions.

The purpose of this degree project was to build laboratory equipment for a new course in power electronics that starts this autumn 2010 at Uppsala University. The equipment is intended for student labs and it covers the most important areas of the course including rectifying, buck-/boost-converters and PWM-modulation. It is built as one sealed unit where all the electronics are built-in but visible and it has a connection board where students safely can connect the different circuits. The project has advanced from theoretical studies of circuit design, choosing of components and simulations to drawing the printed circuit board (PCB), soldering, case building, final testing and troubleshooting - basically most steps from an early idea to a final product. Measurements on the final product gave about the same results as the earlier simulations of the circuits and the result is overall satisfying..

In this thesis I focus on the artistry and essential work, behind the scenes that storyboard artists have contributed to, since the early days of film history. The works I will focus on are the important phases of pre-planning of feature films and animated films. I theorize on the aspect of what makes a good story and how it is brought to life on the screen, as well as how the story is actually conveyed with this drawings. The hypothesis maintains the importance of storyboards, as well as defining their main purpose. Using a formalistic point of view and historical argumentation, I examine and compare five different directors´ use of storyboards and how their respective collaborative teams (i.e director of photography, production designer and story artists, editors etc) create each film´s particular nuances and cinematic expressions.

Projektbeskrivning: Bakgrund: Vid valsning av tunna band med hög hållfasthet används reversibla mångvalsarsverk. Kundkraven är höga vad gäller bandens planhet. Planheten kan styras genom de planhetsställdon som valsverket är utrustat med. Syfte: Förvärva kunskap om hur de olika ställdonen inverkar på planheten. Varje enskilt ställdons inverkan på planheten kan undersökas genom att genomföra en föreskriven förändring av ställdonets läge och därefter utvärdera planhetsförändringen som uppkom.

An inflammatory reaction is induced after release of proinflammatory mediators such asinterleukin 1 and 6 and tumour necrosis factor ?. These mediators stimulate the liver tosuppress the syntheses of albumin and endure the syntheses of acute phase protein forinstance C-reactive protein. The aim of this paper was to perform a method validation on animmune turbidimetric assay to quantify C-reactive protein in canine serum at the laboratory atSkara Animals Hospital, Skara, Sweden. The validation involved evaluation of the assaylinearity, precision, stability and recovery.The method was proved to be linear for both TruLab control and Medinor control.

This thesis investigates all aspects of quality and evaluation issues concerning collections of Internet links in public libraries today and in the future. We have studied central theories concerning quality in general as well as quality aspects regarding the Internet and Internet links. In addition to this we have made three case-studies involving the development of collections of Internet links in public libraries of different sizes. The case-studies were made as interviews with professionals responsible for selection, quality assurance and evaluation of electronic information for inclusion in the libraries collections of Internet links. In addition to this we made an e-mail interview with a librarian responsible for one of the most advanced collections of Internet links among Swedish´ public libraries.

This study focuses on the Nordic model of Extended Collective Licenses (ECL) and how this model can be used in the process of digitalising and publishing archival material such as photos, letters, maps or films. The question that this study aims to deal with is what advantages, and disadvantages, there are for archives and copyright holders when an ECL is being used. To help answering this question the ?theory of the knowledge commons? has been applied. The research question has been answered through a text analysis based on legal texts including Swedish law.

Den här uppsatsen är en didaktisk uppsats i fysik som beskriver ett projekt där syftet var att undersöka om det är den moderna tekniken eller pedagogiken som är orsaken till MBL-laborationers effektivitet. Förkortningen MBL står för Microcomputer Based Laboratory. Projektet genomfördes i en klass på naturvetenskapliga programmet vid en gymnasieskola i Arvika.Eleverna fick utföra en MBL ? laboration som handlade om impuls och rörelsemängd. Halva gruppen fick utförliga instruktioner med stödfrågor enligt MBL-pedagogik och den andra gruppen fick en instruktion av formelverifikations typ och använde MBL ? utrustningen endast som tekniskt hjälpmedel.Utvärderingen av projektet bestod av att eleverna fick besvara en enkät med frågor om rörelsemängd och impuls före och efter laborationen.

Syftet med arbetet är att undersöka hur musiklärare tolkar målen i kursplanen i musik och hur de applicerar dessa tolkningar på sin undervisning. Syftet är även att ta reda på hur musiklärare använder sig av läromedel för att nå dessa mål. Bakgrunden till ämnet är tankar som jag har haft angående musikundervisningen på grundskolans lägre stadier och huruvida denna undervisning är likvärdig över hela landet. Skulle det vara möjligt att ett läromedel i musik, skapat utifrån de nationella målen i kursplanen, åstadkommer en sådan likvärd utbildning? Mina forskningsfrågor syftar till att kartlägga användandet och behovet av läromedel i musik och dessutom till att förstå hur målen i kursplanen för musik kan tolkas av olika lärare.

Under ett samarbete med underklädesbutiken Bornevings har information om textila materialtagits fram. Butiken erbjuder alltid god service när det gäller utprovning av plagg men saknarbaskunskaper om textila material och hur de tillverkas. Textil informationen har tagits framför att underlätta detta problem. Kunskapsbristen kommer nu att eliminerats så personalen kanerbjuda den bästa servicen.För att få reda på hur informationen på bästa sätt skulle redovisas för butiken studeradespedagogik. Inlärning fungerar olika för alla, vissa tar till sig bilder medan andra lättare kanregistrera text.

Transformation of inorganic mercury (Hg) to methyl mercury (MeHg) is a biotic process that is proposed to be conducted primarily by sulphate reducing bacteria (SRB). The formation of MeHg is of great interest because it is the mercury species that biomagnifies to the greatest extent in the aquatic food webs; about 90 % of all Hg in fish is MeHg. Our understanding of factors involved in the production of MeHg is very important for making a reliable risk assessment. The purposes of this study were to investigate the different factors that control the solubility of Hg and the production of MeHg in a contaminated lake sediment. The lake Ala-Lombolo, Kiruna municipality, is well-known to be contaminated by mercury from different sources. Sediment cores were sampled at three different locations (N, SW and SE) in the lake and divided in three different layers; 0-5, 5-10 and 10-15 cm.

Abstract The purpose of the study is to examine how children perceive the relation between play and sex and analyse it from a gender perspective. This by answering the questions: "Is the children?s choice of place, materials and company in play dependent on gender?" and "Is there a significant difference between the sexes and/or ages?" The study was done through twelve focusgroup interviews with three children in each group except two groups of two children in each. Eight boys and nine girls of six years old and nine boys and eight girls of nine years old were interviewed. Boys and girls were interviewed in separate groups and the questions were open ended and followed up.

This report is a qualitative study on children aged three to five years who are in the Swedish preschool. The purpose of the study is to investigate how five experienced preschool teachers view the way children between three and five years acquire basic mathematical concepts, basic numeracy and geometry. The aim is also to find out whether teachers feel that the size of the group of children affects their learning.The study contains information about what preschool teachers think about the way children learn mathematics and how the size of the group of children affects this learning. From the results it can be seen that children learn Mathematics, both in everyday situations and when playing. Moreover, the group size does not seem to affect the mathematical learning of the child.

Undersökningens huvudsakliga syfte är att ta reda på hur elever uppfattar experiment och laborationer inom ämnet fysik. Ett annat syfte är att kartlägga elevuppfattningar om grupparbetet inom det laborativt arbete som kan ha betydelse för elevens aktivitetsgrad och lärande. Som grund för detta examensarbete har vi använt oss av en kvantitativ enkätundersökning som genomförts på 250 elever i grundskolans senare årskurser och gymnasieelever som läser natur eller teknikprogrammet. Resultatet av undersökningen visar att eleverna tycker att det är intresseväckande med laborationer, de ser till viss del kopplingar mellan deras vardag och fysikundervisning och de tycker att de lär sig mer genom att laborera. Dessa uppfattningar stämmer väl med vad didaktisk forskning anser vara syften med laborationer..

Each year, the coffee machines at Ericsson in Kista produce around 100 tons of ground coffee waste.The companies Coor Service Management, Löfbergs Lila and Selecta are all responsible for differentstages in the logistical chain in delivering coffee and, together with Ericsson, they want to increasetheir environmental benefit. The plan is to produce biogas through anaerobic digestion instead ofincinerating the coffee waste in a heating plant. The results are to be presented as different businesscases in which different biogas plants are compared with the reference case (heating plant),comparing costs and environmental impacts.There are two major environmental benefits from producing biogas; reduced carbon dioxideemissions from when fossile fule is replaced by carbon neutral biogas, and reduced emissions fromreturning digestate from the bio reactor to farmland instead of using industrial fertelizer.In order to determine the biogas potential in coffee waste, a couple of properties had to bedetermined in a laboratory. Properties such as the dry substance content, heating value, moisturecontent and ash content. The results show that 100 tons coffee waste could produce around 16 500Nm3 biogas which would contain 163 MWh.The biogas reactor and upgrade plant both need energy gas to function and uses around 14 MWh ofthe produced gas.