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1389 Uppsatser om Filter materials - Sida 12 av 93

Restspänningar i arc-förångade (Ti(1-x)Al(x))N ytskikt

This report is the written documentation of a project work carried out at the Division of Engineering Materials at Luleå University of Technology in cooperation with Seco Tools AB. The project deals with the analysis of residual stresses in Ti-Al-N thin film grown on WC/Co cutting inserts. The composition of Al varied from 0% up to 75%. Increasing the Al content in the Ti(1-x)Alx N compound improves the compressive residual stresses even after annealing of the material. The experiments have been performed in a high temperature x-ray diffractometer (HTXRD) where the interplanar atomic spacing was determined in-situ and subsequent converted into stresses.

Feng shui i trädgården :

Our environment affect us, not least gardens. By practising the ancient Chinese art feng shui, one could find tools how to create harmony and balance in gardens. By paying attention to different energies working with colours, shapes and materials one can create a nice garden with good feng shui. The philosophy, however, includes much more than what plants or what hard materials to choose in the garden. It describes different energies, the movement of energies, which we can learn to live in harmony with.

Teknisk undersökning av stafflimåleri ? Med fokus på två dörröverstycken från Röhsska museet

This bachelor thesis is a study in the analysis of paintings with focus on the technical exami-nation within the framework of ATSR. ATSR is a methodology based on an interdisciplinary study with the aim of putting the object in its context.The study is based on questions concerning which information the object can give, how we access this information and how it can be put in a larger context. My thesis contains three major parts. First a short overview of methods of analysis used in this form of investigation is presented. This is followed by two case studies which exemplify the technical investigation.

Den globala uppvärmningen i skolans läromedel : En jämförande studie av sponsrade och förlagsutgivna läromedel

Today the talk about global warming and climate change are on top of the public agenda. There for schools and schoolbooks also debate the issue of global warming. A newcomer on the school stage is the sponsored school materials that studies show to be a growing phenomenon. In a debate like that of global warming which is filled with uncertainties and so much political and economic interest, I find it interesting to study how these schoolbooks talk about the issue.In my study I have tried to analyze and compare how school materials for primary school discuss the phenomenon of global warming. I have compared two different types of schoolbooks.

Val av material och utformning av sinnesträdgårdar för gravt utvecklingsstörda :

The purpose of this thesis was to determine what materials should be used when creating a stimulating garden for intellectually handicapped people and whether there are materials that are better than others to use in this kind of environment. How the materials preferably can be used and how the environment should be designed to satisfy the need of each individual will also be discussed. Seriously intellectually handicapped people have the same level of intelligence as a normal 0-2 year old child. It is important to point out that these individuals can not be compared to a normal child in other aspects than the level of abstract thinking and perception of reality. As the grown up intellectually handicapped people have remained a lot longer on this stage of intelligence they have got more experience. (Kylén 1981) It is important with a lot of different experiences for the brain to develop normally, which implies the use of many different materials to achieve the best stimulation (Kylén 1981).

Induktiv provning av ferritiskt rostfritt stå

The report examines the factors which may be a contributing cause to the problems that are present when ferritic stainless steel are eddy current tested in a warm condition. The work is carried out at Fagersta Stainless AB in Fagersta which manufactures stainless steel wire. In the rolling mill there is an eddy current equipment for detection of surface defects on the wire. The ferritic stainless steels cause a noise when testing and this noise complicates the detection of defects.Because of this, a study was made of how the noise related to factors such as steel grade, temperature, size and velocity. By observing the signal and with the possibilities to change the equipment settings the capability to let a signal filter reduce the noise level were evaluated.

Läs-och skrivlärande i grundskolan och särskolan : Två lärare beskriver sitt arbete i svenska

My purpose in this paper is to study teachers' work in reading and writing in primary school and special school. I want to find out if they use the same methods, strategies and materials to help students learn to read and write. I will find out the answer to my purpose by performing two qualitative observation and two qualitative interviews. Lundberg (2010) is the researcher I relate to during my study. Through observation, I see how teachers work with students in the classroom during a lesson in the Swedish language. During the interviews, I received answers to how teachers work with language, the materials, methods and strategies they use. I found out that teachers use specific strategies when they help their students. They use a work material that is tailored to curriculum in Swedish language and it is based on the phonics method. .

Studie av materialinnovationer med ett brett applikationsspektra : Tillämpat på Disruptive Materials

This master thesis attempts to answerthe question if a startup with amaterial innovation needs a specialbusiness development model. Mainstreambusiness development literature is notwell adapted to the rigor of testing anew material and bringing it tomarket. This was studied using threedifferent methods. First of thetheories that are considered canonicalfor high tech business development wasexamined. The next step was to go into the role of a business developer inone of the hottest high tech materialinnovation startups this decade,Disruptive Materials.

Glosträning eller lässtrategier? Lärares syn på läsning i gymnasieskolans språkundervisning

Abstract The aim of this study is to find out how teachers view the importance of reading in the teaching of foreign languages. In relation to this, we wish to gain understanding of what teachers want to achieve with reading, how they choose texts and what difficulties they encounter in getting their students to read. Six teachers from three different upper secondary schools in southern Sweden were interviewed for the study. We also examined the text-materials that they were using for their instruction. The findings show that students read mostly adapted texts from textbooks and, to a limited extent, authentic materials.

Healing, häxor och helhetstänkande. En studie av new age- litteraturens tillgänglighet på folkbibliotek

The purpose of this masters thesis is to find out if public libraries provide new age materials or not. My research is done using the point of view of the library users. Do they think libraries hold a sufficient amount of new age literature and do the users find this literature of good quality? To find an answer to this question, interviews have been made with a number of library users interested in new age related issues. Interviews have also been made with librarians, to get their point of view on this rather controversial subject.

Adventsljusstake: Framtagning av ett produktkoncept till en adventsljusstake

Traditions are something that is very important to many people, Christmas is usually no exception. Christmas tree, Christmas ham, herring and candle lights are just as important as the advent candlestick. The advent candlestick help you get the Christmas feeling during the countdown. In this report the work with a new advent candlestick concept can be followed step by step.A lot of information was needed in the beginning. By doing some research, surveys and interviews the ground was established for further work.

A ride in stereovision

Vårt magisterarbete är en 3D-animation som ska simulera en bergochdalbana. Vår uppgift har varit att ta reda på hur man genom illusioner kan lura människans hjärna att se djup även då bilden är helt platt. Vårt främsta verktyg vi använt oss av är glasögon med röd- och cyanfärgade filter. Till vår produktion har vi anlitat andra studenter för att komponera musik och mixa 5.1-ljud. Allt för att öka upplevelsen ännu mer..

Ett nytt pedagogiskt material! : 4DFrame, hur kan man arbeta praktiskt med det?

The objective of this study is to investigate a new pedagogical material called 4DFrame, how it is experienced by informants and how suitable it is in education - in particular mathematics. Socioculturalperspective has a central role in this study when students are given opportunities for linguistic and social interaction during the experiment with the new pedagogical material. The methodology for this study has been visits, interviews, and observations. The study reveals that there are different views on the didactic potential for mathematics of the new teaching material, though no conclusions can be drawn regarding whether this material is more or less suitable in teaching since no research have been found that compares this with other pedagogical materials. Both national and international studies show the need to find alternative and better ways to make mathematic education meaningful.

Hur upplever de anställda på Sandvik Materials Technology - Tråd förändringsarbetet som bedrivs på enheten? : - en enkätundersökning

Syftet med studien var att identifiera anställdas upplevelser om förändringar på arbetet. Författarna fokuserade på hur förändrings-arbetet som bedrivs påverkat de anställda ur ett hälso-perspektiv. Tidsperioden för arbetet var tio veckor. Totalt utdelades 250 enkäter, där de som tilldelades var 190 produktions-anställda och 60 tjänstemän på företaget Sandvik Materials Tech-nology, avdelning Wire. Data behandlades med hjälp av SPSS som är ett statistiskt databehandlingsprogram.

Optimering av den kemiska reningen vid Fläskebo deponi

Landfill leachate contains a variety of contaminants and is created when rainwater percolates the landfill. For landfill management the leachate is the main issue that can cause problems to the environment. At the landfill of Fläskebo, Renova AB treats the leachate in a local treatment plant. The treatment consists of a chemical treatment step with chemical precipitation, flocculation, sedimentation and filtration, and a final step with a carbon and peat filter. Renova has to ensure that the condition of the leachate reaches the regulation set for the landfill before it is released to the recipient.

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