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575 Uppsatser om Steel eco-cycle - Sida 12 av 39

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.

Förstudie för automatisering av gjutgodsrensning

This thesis work has been performed at the Division of Assembly Technology at Linköping University for a period of ten weeks. The work is part of the project ProFlexA, which is a research project in collaboration between Linköping University, Lund University, and industrial partners such as Combi Wear Parts and Smålands Stålgjuteri AB.The casting process creates random incurred burrs and defects, which must be removed during a cleaning process to make sure that the cast can be sold. Automation has long been sought for the cleaning of castings due to, among other things, poor working conditions for staff, but this has proved difficult to implement with today's technology. Automation has for some time been available for more capital strong companies with large annual volumes, but for smaller companies with small-and medium-sized volumes, automation has not been an option.The goal of ProFlexA is to develop an automated cleaning cell aimed at small-and medium-sized volumes.The goal of the thesis is to do a pre study at ProFlexA?s partners on cleaning of castings, and develop concepts for automated cleaning of castings.By recording the process and cycle times, the cleaning of castings has been documented as it works today, and on this basis, information and statistics has been compiled.

UN Guiding Principles on Business and Human Rights utveckling som norm: En analys av Sveriges regering, Volvo och G?teborgs Stad

Since the 1990s, when the number of transnational companies increased, it has created challenges regarding the responsibility of human rights. As a response to these challenges the United Nations Human Rights Council (UNHRC) unanimously endorsed the new policy UN Guiding Principles on Business and Human Rights (UNGP) in 2011. UNGP does not have the status av international law, yet simply as guidelines and its implementation is based on good will and voluntary efforts. Now, 10 years later, this study aims to get understanding regarding if UNGP is considered as norm by the Swedish Government, Volvo and Gothenburg Municipality. The material of the study consists of sustainability reports, annual reports and governmental documents with focus on human rights in relation to business published between the year of 2011, when UNGP was endorsed, until 2020.

Att planera för ett hållbart transportmedel : en studie av dokumentet Cycle Policy 2002-2012 som en del av planeringsprocessen bakom Köpenhamns cykelvägnät

Köpenhamns cykelvägnät har anor så långt som 100 år tillbaka i tiden och på 1980-talet genomförde stadens cyklister stora demonstrationer för att få politikers och planerares uppmärksamhet, som man ansåg hade förlorat fokus på cykeln i planeringen (Jensen, muntligen, 2011-05-02). I detta arbete presenteras siffror som visar att det idag är fler än en tredjedel av Köpenhamns invånare som cyklar till och från sitt dagliga arbete. Köpenhamns kommun vill öka det antalet och målet idag är att bli världens bästa cykelstad år 2015 (Köpenhamns kommun 2007). För snart tio år sedan upprättade man på Köpenhamns kommun ett dokument, Cycle Policy 2002-2012, innehållandes mål för att förbättra förhållanden för stadens cyklister till år 2012. Detta dokument har studerats närmre i denna uppsats.Som blivande landskapsarkitekt blir jag nyfiken på hur de gått till väga.

Synchronizing migration with birth: an exploration of migratory tactics in female moose

Migration and giving birth are crucial decisions for animals during their life cycle, which may have lasting consequences on their population demography and fitness. Migration can entail a variety of possible effects for an individual, such as access to high quality food and reduced risk for predation. The moose (Alces alces) in northern Sweden is partially migratory and moose females are known to give birth to one or two calves. The synchrony between time of calving and timing of migration has not been compared before, especially in terms of energy maximizing and time minimizing perspectives, which may provide vital cues for fitness benefits of migration. I investigated effect of timing of birth and individual life history on distance, timing, stopovers and duration of 190 individually marked female moose that have been tracked for multiple years in ten different areas in northern Sweden.

Ett tält för sju dagar : Festivaltält i papper

SummaryAt the summer festivals and it?s campsites there are each year thousands of tents left behind. Last year, at the Peace and Love festival in Borlänge, 220 tons of garbage was left behind at the festival area, much of which is tents. 69% of festival goers have at some point left behind a tent on a festival campsite. Many of these tents is purchased very cheaply, for a single festival.

Från ståtlig befästning till vittrande världsarv : En jämförelse av byggnadstekniska metoder för sammanbindning av skalmurar

This is a final year project considering constructional techniques for joining cavity walls. The project is related to an ongoing scientific programme about the restoration of The City wall of Visby located on Gotland. The programme was set by Riksantikvarieämbetet as a reaction to a collapse of the outer masonry wall shell which took place in February 2012.The City wall of Visby is a medieval fortification built out of limestone during the 13th century. The wall is constructed as a cavity wall with two separate masonry shells connected to each other through an intermediate core. During the 14th century the wall was heightened which lead to a higher stress, especially in the outer wall face.

De traditionella filmuthyrningsbutikernas skapande av lojala kunder på en mättad marknad

This essay is about the market of traditional rental movie stores, which today are on a mature stage of the marketing cycle. The technique is constantly accelerating and contributes to evaluation of new ways to watch movie. New competitors are such as bigger chain of stores that can offer, in addition to their wide range of other goods, rental movies as a secondary selling. The substitute is of most part Internet based services from where you can watch movie online or download film legally as well as illegally.These different sorts of new competitors or substitutes become a big threat on the traditional rental movie stores as these substitutes can offer the same prices or even lower.With these new ways of watching film this will on turn change the behaviours of the customers that likes to watch movies. The problem for the traditional rental movie stores is trying to keep their existing customers and try keeping them loyal to their store, so that they won?t loose them to the competitors and substitutes.

Effektivisera materialflödet med hjälp av självgående truckar

The thesis that follows is performed in collaboration with Nitator in Oskarström.The factory in Oskarström focuses on laser cutting, robotic welding and surfacetreatment of steel for the automotive industry.The project aims to streamline the flow of materials in production by automatingthe movements of the forklifts, running to and from the interlayer, and betweenworkstations.The project started with a systematic literature search. The literature searchshowed the research position around the AGV-system. Also a review of studentliterature was made, so that a suitable method for practical implementation couldbe developed and applied. Selected method uses both quantitative and qualitativeapproaches, which is analyzed by using triangulation.The work has resulted in a modified layout of the current facility in Oskarströmthat can be used for the implementation of the AGV-system. It has also resulted inthe tender documents and profitability calculation from several of AGV-suppliers..

Design av flödesorienterad montagecell : Utvärdering av layout och materialförsörjning vid Emhart Glass AB

Emhart Glass is the world?s leading manufacturer of equipment, controls and components to the glass container industry. The goal of this project has been to identify improvements and propose cost saving solutions when moving one of Emhart Glass work cells in Sundsvall. The changes shall result in improved work environment and increased product quality. The method contains value stream mapping, concept selection and P-FMEA and complies with Emhart Glass goal to become a more Lean focused business.

Utvärdering av tillverkningsmetoder för svarvbommar

On today?s competitive market, it is difficult to achieve profitability trough high prices on manufactured products. Profitability must be obtained through low manufacturing costs, high quality and short lead times. One of the companies on the market is Sandvik Coromant, manufacturer of tools and chips for metal cutting. This master thesis investigates the methods of manufacturing for boring bars at the manufacturing unit GVH4 at Sandvik Coromant in Gimo, Sweden.

LCA av dricksvattendesinfektion : en jämförelse av klor och UV-ljus

Disinfection methods for drinking-water produced at the two water works of Stockholm Water Co are compared in this study. Three different nethods are compared; disinfection with chlorine gas, disinfection with sodium hypochlorite and disinfection with UV-light and monochloramine. The method used is Life cycle assessment, LCA. LCA is defined as the compilation and evaluation of the inputs, outputs and potential environmental impact of a product system shroughout its life cycle. The environmental burden is compared for the three different disinfection methods.

Freshwater pearl mussel as indicators of Swedish streams - a comparison between freshwater pearl mussel and biological quality elements

The freshwater pearl mussel (Margaritifera margaritifera) is a large freshwater mussel. Because of its sensitivity to human impact, such as eutrophication, acidification and alterations of hydromorphology, the species is considered as a robust indicator of stream water quality and biodiversity. Moreover, due to the species complex life cycle, including a larval stage on the gills of salmon and trout, and sensitivity of early life stages, regeneration is often used as an indicator. The freshwater pearl mussel is also used in the expert judgement of status classification of benthic invertebrates according to the European Water Framework Directive. The purpose of this study was to gain a deeper understanding of the freshwater pearl mussel as an indicator for Swedish streams. It was made with two types of association analyses.

Inverkan av försvagningar på bärförmåga för stålbalkar med långa spännvidder : En jämförelse mellan Eurokod och BKR

The purpose of this thesis is to investigate the degree of influence of holes in the web of steel beams with long spanson weakening of their bearing capacity. Making holes in the web of the beam generally reduces the bearing capacity of the beam. However, it might be necessary seen from both an architectural perspective as well as from a building services perspective by creating an opportunity for building installations.The objective of this thesis is to examine how much an I-beam can be weakened without sacrificing safety and functionality. The investigation has been done by using Finite Element Method through commercial software.The regulation for structural design of building structures in Sweden used to be specified in the document known as BKR. But this was replaced by the European norm Eurocode back in May 2011.

Packstation : Utredning om lösningar för automatiserad hantering

Rapporten beskriver ett utredningsuppdrag för Lantmännen Unibake, Korvbrödsbagarn, där lösningar för en automatiserad iläggning av påsar i kartonger skall ersätta den nuvarande manuella hanteringen.Metoden för att hitta en passande lösning genomfördes enligt PDCA-cykeln (Plan-Do-Check-Act), där fyra olika faser går igenom för att få en förståelse för nuläget och önskemål, utforska tillgängliga alternativ genom kontakt med agenter för maskinföretag, utvärdering av lösningsförslag och till sist en slutsats och förslag till fortsatt arbete..

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