Sök:

Sökresultat:

11303 Uppsatser om Blöta material - Sida 43 av 754

VÀrmebehandling av segjÀrn med hög kiselhalt

Bakgrunden till detta examensarbete var att Qumex Materialteknik vid ett flertal tillfÀllen konstaterat att material av typen SS 0725 har uppvisat bristfÀlliga hÀrdresultat. Materialet, som Àr relativt nytt pÄ marknaden, Àr ett gjutjÀrn av typen segjÀrn och utmÀrker sig gentemot andra segjÀrn pÄ grund av sitt höga innehÄll av kisel. DÄ segjÀrn enligt den nu gÀllande EN-standarden klassificeras efter sina mekaniska egenskaper uppstÄr ett problem gÀllande SS 0725. Materialet uppfyller de krav som Àr stÀllda för EN-GJS-500-7 och hamnar dÀrmed under samma materialbeteckning som ett segjÀrn med betydligt lÀgre kiselhalt. Att tvÄ material med olika kemisk sammansÀttning hamnar under samma beteckning kan innebÀra problem.

Illustrerade klÀttringsmoment : En studie kring hur man pÄminner om praktiska moment

I detta arbete har jag undersökt hur man kan tillÀmpa teorier inom informationsdesign för att gestalta en designlösning som hjÀlper klÀttrare att minnas moment frÄn topprepskursen.Svenska klÀtterförbundet vill utforma ett material med information om klÀttringsmoment som genomförts under topprepskursen. Materialet ska ges ut till examinerad klÀttrare i samband med att topprepskursen inomhus avklarats, för att pÄminna om vad för moment som genomförts under kursen. Tidigare material som ska fylla samma syfte finns tillgÀngligt men Àr inte utvecklat för att ges ut i samband med avklarad kurs. En designlösning som utifrÄn teorier inom informativ bild och kognition har producerats och testats genom öppna observationer. Resultatet i arbetet var att sju av Ätta testpersoner i en observation kunde minnas hur ett praktiskt moment skulle utföras utifrÄn designförslaget..

En jÀmförelse mellan vakuumisolering och traditionell isolering

The purpose of this thesis is to investigate if vacuum insulation panels are a competitive alternative to traditional insulation.Vacuum insulation has been used as insulation in buildings in Germany and Switzerland for a few years. In Sweden the high-performance insulation material is mainly used in refrigerators, freezers and vacuum thermoses. The development is proceeding well and vacuum insulation is becoming more common in the construction industry. Since it is a relatively unexplored material on the market there are many flaws and problems with the material.The questions we have chosen to answer in this report include an increased knowledge of vacuum insulation, various problems that may arise when handling/installation and the pros and cons of vacuum insulation compared to standard traditional insulation.The methods we have chosen to use in this report is a literature study, interviews with various suppliers and manufactures and calculations to show the differences between traditional and vacuum insulation. Vacuum insulation is 5-10 times better insulation than standard traditional mineral wool insulation, mainly at the beginning of its lifetime.Vacuum insulation panels (VIP) have a service life of approximately 50 years, whereas traditional insulation has a service life of approximately 100 years.

Utveckling av teknik i förskolan, hinder och möjligheter

Syftet med denna studie Àr att ta reda pÄ om inspirerande material, som exempelvis tekniklÄdor med tillhörande handledningar, kan inspirera och motivera pedagoger i förskolan att medvetet och regelbundet undervisa i Àmnet teknik samt att pÄvisa hur betydelsefullt det Àr att pedagoger besitter relevanta kunskaper inom Àmnet teknik. Metoderna som anvÀndes i studien var tvÄ enkÀter samt tester av tekniklÄdor med tillhörande handledningar. Ett par slutsatser som framkommer i studien Àr att flertalet pedagoger anser att det saknas inspirerande material i form av exempelvis tekniklÄdor med tillhörande handledningar, förbrukningsmaterial och böcker etc. Dessutom lider pedagogerna i allmÀnhet delvis brist pÄ tillfredstÀllande kunskaper inom Àmnet teknik som i denna studie tyder pÄ minskad motivation att ge teknikundervisningen tillrÀckligt utrymme i verksamheten..

Religion till salu! En studie om försÀljning av indiansk andlighet inom New Age-rörelsen

Syftet med uppsatsen Àr att belysa de problem som har uppstÄtt dÄ indiansk andlighet har blivit en vara som produceras och konsumeras inom New Age rörelsen. Studien har genom-förts genom att tillÀmpa kvalitativ textanalys pÄ insamlat material mestadels frÄn Internet. Det insamlade materialet bestÄr av annonser dÀr man sÀljer olika former av indiansk andlig-het. Material som berör indianernas motstÄnd mot försÀljningen av deras andlighet har ocksÄ insamlats frÄn Internet. Analysen av texterna visar att det framkommer stereotyper i annonse-ringen inom New Age, vilket blir ett problem för indianerna i form av tillskriven identitet.

HÄllbar utveckling i matematikundervisningen : En studie om hur ett utbildningsmaterial som integrerar hÄllbar utveckling i matematikundervisningen kan utformas

This master thesis, which has been carried out in collaboration with Fairtrade,investigates how sustainable development can be integrated in the mathematicaldiscipline in the Swedish upper secondary school. The study includedfindings on design and disposition, with sustainability themes relatedto Fairtrade. This since Fairtrade is going to use the study as a basis forthe development of an educational material. The results of the study areof interest to teachers and organizations that want to develop educationalmaterial that integrate sustainable development in mathematics education.The main focus of the study has been the teachers? preferences on dispositionand design.Semi-structured interviews were conducted with seven mathematics teachersin the Stockholm area.

Smycken frÄn Art Nouveau: historia, utveckling, design och material

Detta arbetet behandlar smycken frÄn Art Nouveau (ca. 1890-1914), och belyser smyckestilen i dess historia, utveckling, design och material. ?Jugendstil? Àr ett grundbegrepp för denna tidsepok, som Àr mest kÀnd för sin konst och arkitektur. Art Nouveau var en internationell förnyelserörelse och betecknades som en övergÄng till det moderna.

Dödens uppluckrade identiteter : Gravar pÄ grÀnsen mellan hedniskt och kristet

The Christianisation of Sweden is not much about religion. Instead, there is much to be gained by looking at it as a colonial situation with changing social identities and power structures. This is evident by the prevalence of hybridisations in the archaeological material.Some of the material categories that show the clearest example of changes are the burials from the 9th century up until about AD 1200. This is exemplified by two different Iron Age burial sites in Stockholm county, Uppland, Sweden: RAÄ 59, Valsta, in Norrsunda parish and RAÄ 40, Lilla Ullevi, in Bro parish; They both show hybridisation by involving older elements with newer ones during a time period when the church was not quite established in the region yet.The Christianisation of Sweden is a colonial situation, but the research tradition has often also used a colonial lens from the 19th and early 20th century in its approach to the period. This means that the same questions, interpretations and conclusions, often based on written sources, have been continuously reused for a long time, which has had consequences for the archaeology in Sweden..

Kvinnors roller i det vikingatida samhÀllet : SpÄr av kvinnor i text och ting

This paper deals with rights of women and their social role during the Viking Age. The method is to compare things and written material.In the written material, three cases of rape have been identified. How each of these cases where looked upon differs; legally the punishment for rape was exile. Violence against wives implied their right to divorce, whereby they were entitled to take with them a great part of the familyÂŽs capital, namely their dowry and morning gift.A husband and wife did not inherit each other but a widow could inherit from her children if they died without offspring.Women buried in boat graves indicate that they had a function or were closely involved in the cult. From two graves, the Aska Grave and the Oseberg Grave, the findings can be interpreted as indicating a change in the social behaviour.

En blick sÀger mer Àn 1000 ord : En studie av portrÀtteringen av kvinnliga kÀndisar i Aftonbladets och Expressens bildmaterial pÄ Internet

AbstractTitle: A gaze says more than a 1000 words ? a study of the portrayal of female celebrities in the photographic material on the online portals of Aftonbladet and Expressen En blick sÀger mer Àn 1000 ord - en studie av portrÀtteringen av kvinnliga kÀndisar i Aftonbladetsoch Expressens bildmaterial pÄ InternetNumber of pages: 58 (59 including enclosures)Author: Sofie BackmanTutor: Amelie HössjerCourse: Media and Communication Studies DPeriod: Spring 2008University: Division of Media and Communication, Department of Information Science, Uppsala University, SwedenAim: The aim of this essay is to study in what ways female celebrities are portrayed in the photographic material of the Swedish tabloid press. In which situations does she appear? What function does she seem to behold in the pictures? Further the thesis explores whetherthe portrayal of the female celebrity shows signs of stereotyping.Method/Material: The study combines a quantitative and a qualitative method. A picture analysis of photographic material from the online versions of the Swedish tabloids Aftonbladet and Expressen has been conducted.

En fallstudie av Södertörns högskolas intranÀt Kurswebben

We have made a qualitative study of what the students at Södertörns högskola use Södertörns högskola?s intranet Kurswebben for and how they experience the use of it. For this purpose we have made a qualitative interview examination with six students. The empirical material has been analysed according to our own analytic model which is based on existing usability theories and consists of the tree parts content, function and design.Our conclusion is that the students use Kurswebben mainly to keep themselves updated, download teaching material and schedules. According to our study, the students most of the time experience their use of Kurswebben as simple, but sometimes have a reluctance to visit it.

KartlÀggning av barnlogopedisk intervention i dagens Sverige

Det saknas en nutida nationell kartlÀggning av barnlogopedisk intervention. Tidigare studier har undersökt specifika enheter eller granskat interventionen historiskt. Syftet med föreliggande studie var att utifrÄn en enkÀt besvarad av kliniskt aktiva logopeder kartlÀgga det barnlogopediska behandlingslÀget i dagens Sverige. MÄlet var att kunna beskriva interventionens karaktÀr samt vilka metoder och material som anvÀnds. EnkÀten bestod av 30 frÄgor och riktade sig till logopeder som för tillfÀllet var verksamma inom det barnlogopediska fÀltet, exklusive barnhabilitering.

AvsĂ€ttningsmöjligheter för slaggrus frĂ„n avfallsförbrĂ€nning vid Åmotfors Energi

The incineration of waste is steadily increasing in Sweden and so is the production ofashes. The bottom ash has for many years been used as construction material inlandfills. Now many of the nation's landfills are closed and there is a great need to findanother beneficial use for the ash. Bottom ash is a gravel-like material and with itsmaterial properties it can replace natural gravel in parts of roads and surfaceconstructions. Today this use is only approved within landfill areas where leachate iscollected and checked.

Ett tidigt möte med matematik : En förskolas arbete med matematik

This research is about the experience educationalists have of children encountering mathematics in a preschool. What is the impact of introducing mathematics in preschool? How do educationalists work with mathematics and how do they experience the children?s interest in mathematics?  The aim of this degree project is to examine how educationalists experience childrenŽs interest in mathematics when they encounter mathematics at an early age. The degree project is limited to educationalists and children within a preschool located north of Stockholm.This research seeks answers to the following questions at issue. Does an early encounter with mathematics in preschool lead to increased interest in mathematics among children?  How can educationalists in preschool work in a appropriate way with mathematics to stimulate children to develop within mathematics and to increase their interest? How does educationalists in preschool experience childrenŽs interest in mathematics?Theories by Piaget, Vygotskij and Dewey were used as well as former research in this subject.To answer the aim and the questions at issue in this research, three interviews was conducted with educationalists at the preschool and recorded with a Dictaphone.

EN NOT OCH TVÅ BOKSTÄVER - Diskursanalys kring anvĂ€ndandet av tonnamnen H, B och Bb

Different ways of naming the two pitches between A and C exist in Sweden, Norway and Denmark. The Germanic tradition uses B and H, whereas the Anglo-Saxon tradition uses Bb and B. The aim of this study was to present a survey of the various opinions regarding these pitch names. The material consisted of different opinions about this matter from Swedish, Norwegian, and Danish websites. By means of discourse analysis the material was analysed in themes, which consisted of logic, tradition and communication.

<- FöregÄende sida 43 NÀsta sida ->