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124 Uppsatser om Bearing - Sida 3 av 9

Utredning av frekvensregleringens påverkan på mekanisk utrustning i en kaplanturbin

As a consequence of increasing wind power installations in the Nordic grid the last years, the need for regulating power has become larger. In the Nordic grid, regulating power is mainly provided by hydro power. One part of the regulating power is called frequency control, which ensures that the grid frequency is stable and close to 50 Hz.However, setting the turbine into frequency controlled operation may cause stress and wear of the components in the mechanical control system. Frequency controlling implies large and frequent servo forces and longer travelling distance of the sliding Bearings in the Kaplan turbine.Based on one selected Kaplan turbine, Selsfors G1, measurements and MATLAB calculations have been performed in order to determine forces and movements of the linkage system. With these forces and movements as input, stresses and fatigue have been determined as well as sliding distances, Bearing pressures and wear of Bearings during a typical lifetime of 40 years.The results indicate that no severe wear exists on the Bearings during 40 years of service.

Brudkronor i Tjust : koncept, symbol, funktion

This essay comprises a study of the bridal crowns of Tjust, with respect to their national history, concept and aspect of mythological symbol. The tradition of Bearing the parochial bridal crown is closely associated with religious medieval politics, and has also come to include elements of superstition and folklore. Attention is paid to these aspects dealing with the position of the bridal crown within current forms of tradition and culture and the impact on brides of this day and age. As the tradition of Church-owned bridal crowns is intrinsic to this country, and especially in the area of which Tjust is a part, possible solutions to the continued tradition are investigated..

Genuskommunikation i biblioteksvärlden: hon och han i kvinnosfär

The librarian profession is dominated by women. The aim with this essay is to find out howmen and women in this field get on together, and how they experience their psycho·social work situation Bearing this in mind. Are there any advantages or disadvantages being a woman or a man in this profession? What do the librarians think about the future? Men and women working at five different public libraries, where the domination of women is greatest, have been interviewed. The essay is based on their opinions and experiences.The female and male librarian get on well with each other and have a good cooperation.There are not many advantages or disadvantages depending on the sex in the profession, but the image, status and salary would probably be better, if there were more men in the profession.

Fungerande Reklam : En studie om de marknadsföringskanaler Generation Y exponeras för, använder samt påverkas av

The purpose of this thesis is to describe the marketing channels Gen Y is exposed to, uses and is influenced by. The thesis also seeks to comment on whether there are other factors, in addition to the marketing channels described, which influence Gen Y in their consumption choices. In addition, we intend to develop knowledge about whether the generalizations of Gen Y have any Bearing, or if they are only assumptions with no support. From the empirical results, we have seen a consensus among the respondents concerning which properties they want commercials to hold, but they differ in their opinions regarding which marketing channels the commercials should be distributed through. Overall, the respondents want the commercials to be entertaining, relevant to their interests, and they want to be able to choose themselves whet­her to take part of them or not..

REE-förande fosfater i Blötbergets apatitjärnmalm

The Blötberget deposit is situated in the north-western part of Bergslagen. The mineralization is an apatite-iron oxide ore of Kiruna type. In Bergslagen the apatite-iron oxide ores occur along a zone from Grängesberg through Blötberget to Idkerberget in the northeast and they represent the largest and the most important iron oxide deposit in Sweden, south of Norrbotten.Different REE hosting phosphate phases has been studied by optical microscopy and analyzed by EDS attached to an electron microscope.The key minerals other than iron oxides are apatite, monazite and xenotime. The relative concentration of the REE-Bearing phases differs from the other apatite-iron oxide mineralizations in the area, for example Grängesberg, by a higher concentration of xenotime and lower contents of allanite..

Förbättringsförslag pådaglig styrning

The Swedish Transport Administration manage nearly 4,000 railway bridges in different condition and age around the country. These bridges is in constant need of maintenance and requires continuous inspections. This thesis is designed as a damage investigation on a single-track railway bridge south of Solvarbo in Säter municipality. The railway bridge is in operation and serves over 10,000 trains a year, everything from speed trains to freight trains. The bridge is built as a beam bridge, simply supported over a road.

Barns kunskaper om rymden : Hur iutvecklas elevers kunskaper om solsystemet från förskoleklassen till årskurs 5?

AbstractWhat do the pupils really learn in school? What do the pupils know before they begin schooland what knowledge do they have when they graduate form 5 and should have achieved thegoals? I chose to interview some pupils in the end of nursery school and some pupils in theend of form 5. To limit myself I chose the subject space, because I think most pupils thinkthat space is an interesting subject. The result of my examination was that pupils in nurseryschool have many different thoughts and previous knowledge about space, often on the basisof what they have seen themselves, and that some of the pupils in form 5 have some moredeveloped knowledge while some pupils still got the skill as a nursery school pupil. Myexamination shows that some pupils have learned surprisingly little, Bearing in mind that theyhave been in school for five years..

Betongpelare och brand : En utvärdering av 500 °C isotermmetoden

At the beginning of 2011, Sweden started using the European rules for structural design, the Eurocodes, instead of the previous national rules. In both the previous rules and the Eurocodes, it is possible to dimension concrete columns using tabled values. However, the required cross section measurements have increased considerably. Moreover, it is possible to dimension concrete columns using calculations, however, this is unusual.The development of a fire in a fire cell can be divided into the growth stage, the fully developed fire and the cooling phase. The duration of each phase, as well as the temperature, is dependent on a number of factors, e.g.

De nya Moderaterna : Förnyelse eller 'samma gamla visa'

 The purpose of this thesis was to explore how the ideological self-image of the biggest Swedish governmental party, Moderaterna, has developed between 1993 and 2011. The second purpose was to compare this development on a fundamental ideological level, with development on the operative ideological level. This was to be made by qualitative analysis of the party?s ideological programs and election manifestos. Hopefully this would expose a pattern of the party?s ideological development. The findings of this thesis however, suggested that while the ideology on the fundamental level had radically changed, the ideology on the operative level has been characterized by continuity.

Optimering av glidlager och utveckling av dess konstruktion

I detta projekt har vi fördjupat oss i en glidlagerkonstruktion som befinner sig i en skruvpress. Skruvpressen kompakterar en okänd massa som är sekretessbelagd. Robustus har ett förslag på överdimensionering av det nuvarande glidlagret. Målet med projektet var att analysera och optimera några glidlager i förhållande till det befintliga glidlagret samt att ta hänsyn till materialval och den miljö som lagret kommer att befinner sig i. Det som analyserna och optimeringen visade var att det befintliga glidlagret hade den bästa geometrin bland alla lösningar men inte det optimala materialet.

Byggnation av ett tak i Lwengo Basilla : En fältstudie med fokus på infästningar, pelare och bärläkt på en skola i Demokratiska Republiken Kongo

The Swedish Transport Administration manage nearly 4,000 railway bridges in different condition and age around the country. These bridges is in constant need of maintenance and requires continuous inspections. This thesis is designed as a damage investigation on a single-track railway bridge south of Solvarbo in Säter municipality. The railway bridge is in operation and serves over 10,000 trains a year, everything from speed trains to freight trains. The bridge is built as a beam bridge, simply supported over a road.

Utveckling av dynamiska farthinder

The aim of this Master of Science Thesis is to develop guidelines and improvementsuggestions of RiNOVA Traffic AB?s dynamic speed bump. The project started with athorough pre study of the design and its function to find out how passing vehiclesaffects the dynamic speed bump. The majority part of the pre study was to createnecessary mathematical models to explain the arisen forces and strains.The results of the mathematical models gave necessary information about the designregarding weaknesses and flaws. The most critical ones where those which interferedwith the design?s performance and reliability, and therefore needed to be corrected.These problems where more thorough analysed and discussed with experts before thefinal guidelines and improvement suggestions where developed.The parts of the design that had to be redesigned were the extension springs and theBearing that enables the dynamic properties.

Språkets betydelse för matematikinlärningen

Study aimed to see if the language has Bearing on mathematics learning. The study used qualitative interviews of three first grade teachers and one special education teacher.The questions asked was:Do the teachers and specialist teacher, at the selected schools, think there is a connection between language difficulties and difficulties in mathematics and in case how is this connection.How does the teachers / specialist teacher make it easier for students to learn mathematics and swedish.The study was based on Vygotsky and Piaget teories. In previous research, it is primarily Malmer, Hoines, Lowing and Kilborn who´s been treated. Within the governing documents, it is mainly the compulsory school curriculum Lpo-94, and the curriculum for mathematics treated.I hope that the study has conclude that there is a connection between language and mathematics learning.I tried to emerged this through interviews with tree teachers and one special teatcher but i couldn´t. The teatchers couldn`t fint that it was the only reason to why the pupils hade difficulties in mathematics.But in the literature I found the relation between language- and mathematicdificulties..

Vårdpersonalens uppfattningar om fibromyalgi

Aim Our aim is to highlight perceptions of fibromyalgia among health care personell.MethodsA systematic literature review conducted with a deductive approach.FindingsHealth care personell felt insecure because of a lack of understanding which lead to avoiding contact with these patients. Many felt that the fibromyalgia patient was categorised and that they would have been better served with another name of their disease. There was a great distrust against the diagnosis and its aetiology. The patient was perceived as troublesome, illness-fixated and draining the personell of energy. The paradox that the patient is looking so healthy but Bearing so much pain was confusing for the health care personell.Conclusions Communication and an empathic encounter was identified as important elements for patient care.

Ingenjörpluton : Kung på en sak eller klåpare på tusen?

This essay is about the engineer platoon. The engineer platoon has many different tasks and from my own experience sometimes too many. The platoon is able to build bridges, clear mines and to perform all kinds of construction work in rural or in urban terrain.In this case study I compare goals/demands for the battalion to goal?s set up for the company and finally what effects this has on the engineer platoons abilities. The main question is, if the engineer platoon really can solve all tasks given to them in the document TOEM? Abilities such as effect, protection and movement are the Bearing parts of the case study.The materials I have analyzed are mostly from documents published by The Swedish Armed Forces.

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