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1328 Uppsatser om Laboratory materials - Sida 32 av 89
Patotyptest av potatiscystnematoden :
There are two species of potato cyst nematode (PCN), the yellow, Globodera rostochiensis, and the white, Globodera pallida. Each of them can appear in different pathotypes. These are separated by testing the nematode ability to multiply on a number of potato cultivars with different resistance properties. The aim of this project was to examine the virulence of Swedish and foreign PCN populations and to compare two test methods. Biotests are today the only available tests used to study virulence.
Utveckling av universaladapter för torkblad i samarbete med European Automotive Supplier AB
This report looks at the possibility of designing a universal adapter for Flat Blade windshield wipers in cooperation with European Automotive Supplier AB.To understand and see if this is possible, a research and an extensive patent search where done. Then to add structure to the project a Ganttschematic were developed. To generate good and solid ideas, different methods for product development were looked upon.When a method was chosen and applied, a series of concepts emerged. Now the focus was to design and construct all the pieces. The desired manufacture procedures were looked upon as well as materials.
Tesaurer eller ontologier? Eller både och? : En jämförelse mellan två typer av ämnesordssystem med tanke på deras förbättring av effektiv informationsåtervinning
By examine plastic craniums from eight different hominids I wanted to find morfological characteristics that agreed with those of modern humans. The species that were selected had a plastic casting of its cranium in the laboratory at Gotland University. My focus was on species from the family Australopithecius and Homo and only working with their craniums. And this because the cranium and the theeth shows the most visible morfological characteristics between the different hominids. I also wanted,in a small part of the essay, to write about the differences in now living primates and humans skulls.Except from analysing the plastic castings I also studied surveys written by other scientist on the same subject.
Läsförberedande arbetsböcker i förskoleklass och skola : Arbetsboken, en ö i havet
Workbooks are used and has been used for a long time in teaching context with younger children. Given that children start grade 1 after one year of preschool, I will in my study examine what type of activities that are presented in textbooks used for teaching younger children in pre-school and school grade 1. The purpose of the study is, through a selection of published skill-training materials investigate its pedagogical basic view related to reading and write form of education in pre-school and school grades 1. In line with the aim of the study and to answer the study questions, a qualitative text analysis and pictures analysis was carried out. The result shows that there are more similarities in content than the forms of the textbooks, there are assumptions about language as well as how images should be interpreted in a right way.
Utveckling av en Multi-Zonsmodell för NOx Bildning i Diesel Motorer
This thesis work is the last part of the Master of Science education inmechanical engineering at KTH, Stockholm.The aim of this project was the development of a Multi-zone modelfor NOxformation in Diesel engines. Because of the stringent emissionlegislations, great effort is made to decrease the fuel consumption and theharmful emissions of internal combustion engines. Computer simulationsplay a decisive role in this context because they substitute the expensiveand time-consuming laboratory tests.The model is based on a multi-zone approach and uses the wellknownExtended Zeldovich Mechanism which gives a relation to calculatethe NO formation rate using the concentration of different gas speciesinvolved in the process.All the most important phenomena involved in the Diesel combustionhave been modelled. A special attention is then paid to the equilibriumconcentration calculation; this is a significant part of the model whichstrongly influences the following steps.A Simulink model has also been developed. This second version isbased on the previous model and it is made especially to allow theconnection with other external softwares, GT-power in this case.
Tradition i skolan - skolans tradition? : Hur arbetar musiklärare i klass med traditioner?
How does music teacher work in class with traditions in the school's world?I sent out 53 questionnaires to music teacher that works with music in class, in order to find out what the school learn the students about our traditions. When I put together the questionnaires and the background material, I come among other thing until that three fourth dividing off the examined the music teachers do not appear to leave off some folded contained Lucia- and the Christmas tradition. Those music teachers who replied on the questionnaire seem not to notice the immigrant?s traditions.In this exam work has I also overall and put together background materials, as among other things points on the value of traditions.
SEMI : Ett projekt med syfte att presentera en ny lösning till katastrofbostäder
AbstractThe number of natural disasters are increasing. Disaster relief today is improving, but not enough.The purpose of my graduation paper is to present a new solution to shelters. It?s important to remember the human, social and environmental aspects when designing a shelter for disaster relief. Each group within the population has to be able to use the shelter and benefit from it.
Slithållfastheten för dentin och cement i förhållande till emalj in vivo hos häst
The female dog has a unique reproductive endocrinology, with high levels of progesterone throughout the 70-day long luteal phase. In this project, markers of glucose metabolism were studied and compared from the aspects of breed group and time in oestral cycle. The parameters studied were: glucose, insulin, progesterone, fructosamine and the newly introduced analysis of HbA1c. Hba1c was also further evaluated and discussed as a diagnostic tool in canine medicine.No differences in terms of glucose markers were found between a group of purebreed dogs of various breeds compared to a group of dogs with high risk of dioestrus diabetes, namely the Norwegian and Swedish elkhounds.No differences were found between the two sample occasions, anoestrus and dioestrus, concluding that there is no need for relating test results to the time of the oestrous cycle in middle-aged intact female dogs.There were statistically significant higher values of all glucose markers in diabetic dogs than in non-diabetic dogs. When it came to HbA1c, however, there was a larger overlap between the two groups, compared to fructosamine.
Förutsättningar och hinder för att använda offentlig upphandling som styrmedel för en hållbar hantering av entreprenadberg
Large volumes of excavated soil and rock are generated in building- and construction projects. These materials need to be transported longer and longer distances due to the densifications of cities. The transportation affects the environment in terms of noise and emissions, but also makes high demands on road infrastructure. To reduce the transport distances an increased responsibility for the excavated rock generated needs to be taken. Responsibility can be increased through an introduction of means of control.
Bottensubstratets inverkan på föryngring av Flodpärlmussla
The freshwater pearl mussel (Margaritifera margaritifera) is threatened throughout its range. There has been a substantial decline of the species and one major reason is habitat degradation. We investigated how the substrate composition of the bottom floor affects the regeneration of the mussel by analyzing data from the Västerbotten County Board?s inventory of the freshwater pearl mussel. The results implied that fine material such as fine sediment and sand might be detrimental to regeneration whereas gravel and boulders and in particular stone seem to be beneficial.
Den skapande gränsen - En analys av sömnmotivet i Daniil Charms prosatexter
The aim of this master thesis is to study the reliefs of a Romanesque tombstone from 1130 AD, with the intention to form a plausible understanding of their meaning. During the course of the investigation, my main focus will be on collecting materials of an iconographical and historiographical nature, as they appear in previous studies. I will also use performative analysis when examining the tombstone. Consequently this thesis can be seen as a survey of history and place; early Christian iconology as well as the experience of the viewer. As a result, the 900-year-old tombstone will not only be seen as a memorial in this text, but also as a performance of one man?s faith and as representing the core message of the early Christian church.The tombstone is a rarity in Swedish art history and well worth a closer examination.
Förbättring av den svenska kiselalgsmetoden-hantering av sedimentering
Benthic diatoms are used in Sweden for monitoring water quality in run-ning water; the method is also frequently used in other countries in Europe. One of the problems of the diatom method is the need for sedimentation of the fresh sample, to be able to decant the over standing water and add alco-hol as a preservations solution. To my knowledge, no results have been published about how long the settling time must be to ensure that the ben-thic diatoms really have settled down to avoid a loss of the diatoms when decanting the over standing water.
The aim of my investigation was to improve the Swedish method where the benthic diatoms are used for water quality monitoring. I wanted to find out the appropriate time necessary to wait until all diatoms have settled down before decanting the over standing water.
First, fresh benthic diatom samples were taken in the river Fyrisån and the lake Mälaren on different days. After arriving in the laboratory, I waited three different times (30 min, 60 and 180 min) for the diatoms to settle.
Uppföljningsparametrar vid förbättringsprojekt : En fallstudie inom Laboratoriemedici
Enligt Socialstyrelsens föreskrifter om ledningssystem för kvalitet och patientsäkerhet i hälso- och sjukvården, SOSFS 2005:12, krävs det av vårdgivaren att denne arbetar efter mål. Att formulera mål inom hälso- och sjukvården kräver eftertanke. Målen måste vara mätbara och inkludera flera olika delar av verksamheten. Varje förbättringsprojekt är unikt och bör relateras till de resurser som avsatts. Ett stort problem vid kontinuerlig uppföljning är att välja ut parametrar som ger tillräcklig information och är lätta att skapa.
Utvärdering av strömaterial av restprodukter från wellpapp
SUMMARYFor thousands of years horses have been at people's side. They have been used for transportation at war, to save time, manpower and money. For practical reason, man has forced the horses into narrow spaces. Stabling includes factors as feeding and bedding. In the boxes the bedding materials must be kept clean and maintain good hygiene.
Undervisning av svensk språkhistoria på gymnasiet : Intervjuer med gymnasielärare, samt elevenkäter
AbstractThis thesis explores how secondary schoolteachers in Swedish, prioritise from the Swedish language history materials. The study includes interviews with two Swedish teachers and inquiries with students in two classes at the social science programme (third year). The student literature that is used has been analysed and the teaching is compared with the Swedish central teaching plan. The results show that the students are weak in placing language at different historical time periods and make conclusions of this. The results from both the inquiries and teaching contents disclose a general weakness as it comes to Swedish language history.