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5243 Uppsatser om High-strength concrete - Sida 38 av 350

Utvärdering av infästningar i sandwichkonstruktioner för fordonsapplikationer

The automotive industry is increasingly studying lightweight solution in their designs, also rational production and low costs in materials and manufacturing methods are of great interest. This thesis consisted in the practical evaluation of anchors for sandwich panels. The object was to study loads of shearing and pull out of the plane. The experiments were carried out on panels made up of 1mm aluminium coatings and 50mm extruded polystyrene (XPS) at its core. As the fasteners used simple methods such as blind rivets, screw and glue.

Produktionsvåtmarker mot övergödning

In ambition to produce more and better harvests, artificial fertilizers are used to produce a better growth of crops in the agriculture landscape. This contributes to leakage of nutrients. Our forests also exhibit a leakage of nutrients. Air pollution contributes to more nutrients. High precipitation with high water flows as a consequence seems currently to occur more frequently in the county of Halland.

Småskaligt vattenkraftverk i Nyköpingsån

Interest in alternative energies is high in Sweden today, particularly in the agricultural sector. According to the Swedish lantbruksbarometern (2009), almost all respondents consider the use of some form of alternative energy from the farm. While interest in alternative energies is large, attention to the alternative energy straw has fallen and is almost nowhere mentioned in the literature today. Three years ago, in the Lantbruksbarometern nearly 44% of the farmers would be willing to invest in straw as heating system on the farm. How do the farmers decide to invest in alternative energies? With this information a problem is presented for this paper.

Punktlasttestning av olika bergartstyper i Kiirunavaaras liggvägg

Examensarbetet ingår i den slutliga delen av kandidatutbildningen i naturresursteknik och utgör 15 högskolepoäng. Utbildningen är inriktad mot geologi och det avslutande arbetet ska ha anknytning till ämnet. Under våren 2012 presenterade representanter för LKAB förslaget att basera examensarbetet på att dokumentera hållfastheten hos bergarter från Kiirunavaaras liggvägg med hjälp av punktlasttestning. Tidigare undersökningar av hållfastheten hos bergarterna i Kiirunavaara har främst gjorts genom enaxiella tryckhållfasthetsmätningar. Det finns ett behov av att undersöka hållfastheten hos bergarterna i Kiirunavaara då gruvbrytningen sker djupare ned i jordskorpan och kraven på säkerheten ständigt ökar.

Tilläggsisolering - lönsamt enligt en livscykelkostnadsmodell?

It is found that the properties of the record years of 1965-1975 is leaking a lot of energy andthese properties are facing a major energy efficiency. From the energy aspect, the facade isafflicted with poor thermal insulation which is a big problem. To address this problem addinginsulation is a good alternative to reduce overall energy consumption of a building. Thewindows on these buildings are also a problem from the energy point of view. Therefore,there are many reasons considered for energy upgrading.

Fältstudiers betydelse för stimulans, delaktighet och inflytande : En studie av hur elever och lärare i Vallentuna gymnasium värderar fältstudier

Schools inspections investigation has shown that most pedagogues are experiencing significant challenges to stimulate students and to invite students to participate and to influence the teaching structure and content. This study is based in the school inspections school questionnaire from 2013 which shows that Vallentuna high school results in two categories stimulation as well as participation and influence gets a low index value compared to all participating school units. Previous research has shown that the field studies creates greater amount of stimulation, increases students? participation and provide experience of a bigger influence. Careful preparations are also important and the right form of field studies.

Riskanalys för Göteborgs vattentäkt med avseende på förorenade områden längs Göta älv

Today more effective computer programs are in use, regarding design of geotechnicalconstructions. There is a risk that the theoretical background of the computerprograms, its limitations and the signification of the choice of soil parameter isforgotten when the computer programs become more user-friendly.This Master thesis deals with simulation and analysis regarding three computerprograms, FEM-design, with the addition Raft, Plaxis and BE-slab. Comparisons aremade for settlement and maximum moment in a concrete-plate. FEM-design is a threedimensional FEM-program, foremost created for design engineers. Plaxis is a twodimensional FEM-program, intended for geotechnical engineers while BE-Slab is aBoundary elements program in two dimensions that is mainly used by designengineers.

Faktorer som påverkar Vänerns öppna sandstränder och möjligheterna för hög biologisk mångfald ? med mossor som indikatorer på igenväxning

The sandy beaches of Vänern are threatened by overgrowth and thereby the biodiversity is at high risk to decline. This study is based on an inventory of vegetation of overgrowth character and mosses. The frequency and spread of mosses is perceived as an indication of initial or present overgrowth. External factors that have been taken into consideration are wind-, wave- and ice erosion, the slope of the beach, wear and grade of exposure. The purpose of the investigation is to control the beaches grade of overgrowth and find out which external factor is of most importance for the maintenance of the biotope. The results show that the beaches environment is affected by the slope of the beach, grade of exposure, size, wear and overgrowth.

Skattad rörelserädsla före och efter genomgången beteendemedicinsk rehabiliteringskurs. En beskrivande studie.

Abstrakt All around the world there are a lots of people that suffers from chronic pain. One great factor for the devolopment of chronic pain is the phenomen fear-avoidance/kinesophobia that appear to have negative effects on rehabilitation of chronic painproblems. The aim of the present study was to describe and identify how patient that took part in a rehabilitationprogram in year 2004 and 2005 with focus on behaviourchanges estimate their fear-avoidance/kinesophobia and examine if there was any changes estimate fear-avoidance/kinesophobia respectivly before and after and respecivly before and 12 month after the rehabilitationcourse. The study had a describing prospecitive design. Data was collected by the Swedish version of Tampascale for kinesophobia.

Missbruk är ingen bra affärsidé ? en studie om strategiskt CSR-arbete i ölbranschen

PURPOSE: To analyze how companies in the Swedish beer industry strategically workingwith CSR externally in order to increase their legitimacy.METHOD: Qualitative interviews and text analysis to enable data to stakeholder analysis.MATERIAL: Respondent interviews with key individuals, textual analysis of CSR-relateddocuments of the largest beer producers in Sweden.MAIN RESULTS: The study shows that it is possible to distinguish three main categories ofstakeholders to the beer producers. These have various high stakeholder values, wherecustomers are those with the highest value, then consumers and third critics. That these havevarious high values allows different strategic approach to the key issue of how preventivemeasures, that can be said to work against their own products, affects the beer producerslegitimacy among stakeholders..

Förebygga ohälsa ? Hur effektiv är lagen som verktyg mot ohälsa?

PURPOSE: To analyze how companies in the Swedish beer industry strategically workingwith CSR externally in order to increase their legitimacy.METHOD: Qualitative interviews and text analysis to enable data to stakeholder analysis.MATERIAL: Respondent interviews with key individuals, textual analysis of CSR-relateddocuments of the largest beer producers in Sweden.MAIN RESULTS: The study shows that it is possible to distinguish three main categories ofstakeholders to the beer producers. These have various high stakeholder values, wherecustomers are those with the highest value, then consumers and third critics. That these havevarious high values allows different strategic approach to the key issue of how preventivemeasures, that can be said to work against their own products, affects the beer producerslegitimacy among stakeholders..

Yrkesarbetarnas utveckling och framtid. En studie om yrkesarbetarnas situation och förhållanden i byggbranschen

Today more effective computer programs are in use, regarding design of geotechnicalconstructions. There is a risk that the theoretical background of the computerprograms, its limitations and the signification of the choice of soil parameter isforgotten when the computer programs become more user-friendly.This Master thesis deals with simulation and analysis regarding three computerprograms, FEM-design, with the addition Raft, Plaxis and BE-slab. Comparisons aremade for settlement and maximum moment in a concrete-plate. FEM-design is a threedimensional FEM-program, foremost created for design engineers. Plaxis is a twodimensional FEM-program, intended for geotechnical engineers while BE-Slab is aBoundary elements program in two dimensions that is mainly used by designengineers.

Behövs en litterär kanon? : Jämförande studie baserad på sju gymnasielärares syn på kanons plats i svenskundervisningen 

English title: Is a literary canon necessary? A comparative study based on seven senior high school teachers´ different approaches towards the place of canon in the education of Swedish. The purpose of this study is to describe and analyze how seven senior high school teachers relate to a literary canon in Swedish while teaching literature in senior high school, identifying similarities and differences among the teachers? view and opinions about an outspoken formal literary canon and a silent, informal canon.The earlier research opens the door slightly to the American debate and gives insight about the complexity of the concept of canon. The study continues with exploring possible relations to postcolonial theory and didactics.    The study reveals that the majority of the concerns against canon are that too much centrally governed education may decrease the motivation and commitment of the teacher. In addition, the dominant canon passivizes a certain variety of literature, thus various points of views. On the other hand, views on the equalizing effect of canon on the level of education and its benefits in increased knowledge of the history of the literature are salient. .

Att reducera ledtiden i en produktion med hög variation och låg volym - En casestudie på Lab.gruppen

Due to increasing product availability and higher demands on fast deliveries, the competition between companies is growing. To be able to satisfy the customers? requests an efficient logistics system with short throughput time is required. By using tools associated with Lean production companies are able to make great improvements in their manufacturing systems and reduce lead times to satisfy customer demands.There are two classifications associated with manufacturing, high variety and low volume (HVLV) and low volume and high variety (LVHV). The general belief is that the concept of Lean production is difficult to implement in a production environment with high variety and low volume due to the concept being adapted to mass production.

Diabetes hos hund : utfodring, motion och vikt som möjliga predisponerande faktorer

This is a study of some risk factors for Diabetes Mellitus (DM) in dogs. As a pilot study it is meant to give information to be used in a planned later, larger and better controlled study. The present study hypothesized that suboptimal feeding (high percentage of homemade and table foods), lack of activity and overweight contribute to the risk of DM. Twenty consecutive dogs diagnosed with DM at the Veterinary University Clinic in Uppsala between 2000 ? 2003 were chosen as the experimental group.

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