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281 Uppsatser om Metal contamination - Sida 7 av 19
Förbättring av Camcoil : Integrering av stöd samt bandnyp
AbstractThe assignment were assigned by Camatec Industriteknik AB. Camatec is a Karlstadlocated consulting company, they make everything from pilot studies to complete projects in mechanical design and calculation. They even have their own patented product, Camcoil. It is a winder for steel strips and is used for example with hardening of the steel strip. The assignment has been to solve the problems encountered by some customers within this product.
Dubbeltydig form : Djurliknande avbildningar i metall under järnåldern
This study concerns a selection of prehistoric metal objects of animalistic design, published at the internet site of the Swedish Statens Historiska Museum. It seeks to give an impression of the design elements used, and to find likely models for the motifs among live animals. The method used is a qualitative hermenuetic comparative study of objects, where the distinct significant design elements are being identified and interpretated. Several significant design elements are identified, and some are interpretated as representing certain animals. The amalgamation of differentiating design elements in some objects however, leads to interpretations of compound animal motifs, where some motifs are considered ambiguous and some are rendered uninterpretated.
Onstage/offstage : - om avvikande och normbrytande.
Den här uppsatsen tar avstamp i en personlig erfarenhet av när representationen på sociala medierorsakat konsekvenser i den fysiska världen. Uppsatsen undersöker, genom en autoetnografiskmetod, processer för normerande tillhörighet inom speciella diskurser. I texten användsmusikgenren Black Metal som exempel för att visa hur normer styr och kontrollerar socialthandlingsutrymme för kvinnor. Begrepp som används för att beskriva dessa processer kommer frånErving Goffman och har kallats för det dramaturgiska perspektivet. Begreppen används vidare iarbetet som verktyg i det gestaltande arbetet där normer för subjektspositioner undersöks iiscensatta fotografier..
Grosz och hunden : En ikonologisk analys av hundens roll i Groszs målningar
Den här uppsatsen tar avstamp i en personlig erfarenhet av när representationen på sociala medierorsakat konsekvenser i den fysiska världen. Uppsatsen undersöker, genom en autoetnografiskmetod, processer för normerande tillhörighet inom speciella diskurser. I texten användsmusikgenren Black Metal som exempel för att visa hur normer styr och kontrollerar socialthandlingsutrymme för kvinnor. Begrepp som används för att beskriva dessa processer kommer frånErving Goffman och har kallats för det dramaturgiska perspektivet. Begreppen används vidare iarbetet som verktyg i det gestaltande arbetet där normer för subjektspositioner undersöks iiscensatta fotografier..
Kemiskt försvar mot havstulpanskolonisering i marina svampdjur
The purpose of this project is to analyze and study the absorption of the substances ivermectin, spinosad and barettin to hydrophobic and hydrophilic surfaces, and to analyze and study if the barnacle larva are effected when they try to settle on the treated surface.Incubation tests with barnacle larva in Petri dishes were performed as well as absorption tests on hydrophobic and hydrophilic surfaces which were tested with ellipsometry. To determine the surface thickness.The barnacles were placed in hydrophobic as well as hydrophilic Petri dishes that had been incubated with ivermectin, spinosad or barettin. After four to six days the larva was counted to analyze the settling. From the results conclusions could be drawn about the adsorption abilities of the substances to the different surfaces.The barnacles were placed in hydrophobic as well as hydrophilic Petri dishes that had been incubated with ivermectin, spinosad or barettin. After four to six days the larva was counted to analyze the settling.
Dragbrotschning av invändiga profiler
High-precision cutting in metal is very complicated, a lot of parameters affect the result: what geometries to be manufactured, surface roughness and tolerances to be achieved, batch size etcetera. When pull-broaching internal parts this might be even more important, than in any other cutting operation. Everything is machined in one single stroke and the general technology is built in to the tool, therefore big investments must be made to change the process. Milling for an example: one piece at a time is machined away, and a lot of parameters can be changed easily.It is very high pressure on the cutting-edge when the broach is cutting. To achieve the specified product and to avoid unnecessary toolwear it is essential to use the right cuttingfluid and the right cuttingspeed for an example.
Hur sjuksköterskor kan förhindra spridningen av MRSA inom somatisk vård : En litteraturöversikt
Bakgrund: Methicillinresistent Staphylococcus aureus (MRSA) är en multiresistent bakterie som är svårbehandlad och kan orsaka vårdrelaterade infektioner. Varje år drabbas miljontals patienter av vårdrelaterade infektioner och hundratals patienter avlider för att vårdpersonalen brister i sina hygienrutiner. Syfte: Syftet med studien var att belysa hur sjuksköterskor kan förhindra spridningen av MRSA inom somatisk vård. Metod: Som metod tillämpades en litteraturöversikt som baserade på kvalitativa och kvantitativa vetenskapliga artiklar. Resultat: Ur analysen av datamaterialet framträdde två teman; höja kompetensen och förutse risker samt konsekvenser med sex underteman.
Gravar i Alsike hage : Analys av fyndkontexter och gravkonstruktioner tillhörande gravfältet RAÄ 26 i Alsike socken, Uppland
This essay deals with the results and observations made during excavations in an iron age cemetery in Alsike hage, located in Alsike parish. The excavations took place in 2005 and 2006 and the investigated area comprised two adjacent, but secluded burial-constructions; a square stone setting with a secondary grave, and a stone-built terrace with at least one secondary grave. The artifacts suggests that the TPQ of the stone setting, and the construction date of the rest of the graves, is 900-950 A.D. The aim of this study was to comprehend the course of events in the investigated area, and toanalyse the archaeological finds - in comparison to the well documented an discussed material burial culture in the lake Mälar area ? in order to discuss indicators of gender and social status.Metal artefacts has been preserved as a part of the analysis..
Kunskapsfabrikens rötter
The purpose of this study was to investigate, through a qualitative survey, the need of knowledge and strategy in organisations today and tomorrow. The empirical investigation is built on a semi structured interview that was conducted on nine different companies in Gislaveds community. The companies were from three different branches namely: tree, metal and polymer. Three interviews were conducted in each branch.The result from the interviews showed that the globalisation had put the companies under hard competition which had made the need for rationalisation and effectivness more apparent. Having said this, the demands on the organisation and the individuals within it will constantly increase.
Kemisk stabilisering av gruvavfall från Ljusnarsbergsfältet med mesakalk och avloppsslam
Mine waste from Ljusnarsbergsfältet in Kopparberg, Sweden, is considered to constitute a great risk for human health and the surrounding environment. Some of the waste rock consists of sulphide minerals. When sulphide minerals come into contact with dissolved oxygen and precipitation, oxidation may occur resulting in acid mine drainage (AMD) and the release of heavy metals. The purpose of this study has been to characterise the waste material and try to chemically stabilize the waste rock with a mixture of sewage sludge and calcium carbonate. The drawback of using organic matter is the risk that dissolved organic matter can act as a complexing agent for heavy metals and in this way increase their mobility.
Ett framtida stall för kaninproduktion.
This survey was made to investigate the possibility of using an alternative method of fencing inSwedish forestry. The most common way of fencing in Sweden today is made by a two meter highmetal net that is attached to turned impregnated poles. The fencing methods that have beeninvestigated is a fencing system made completely out of wood so called ?German wood fence?.Browsing of game in forest regeneration areas is often a big problem and some kind of protection ofthe plants is often necessary. There is several ways of building fences and the most common way isto use metal nets and impregnated poles, this leads to a problem when the fence has profiled itspurpose.
Occurrence of Verotoxin-encoding phages in mussels grown downstream the sewage treatment plant in Lysekil
The purpose of this study was to investigate the occurrence of Verotoxin-encoding bacteriophages in mussels, cultured downstream the sewage treatment plant in Lysekil.Mussels were collected in three growing areas from April 2008 to March 2009. Real-time PCR was performed for detection of vtx1 and vtx2 genes and enrichment of bacteriophages on non Verotoxin-producing Escherichia coli O157: H7 was carried out. All samples in real-time PCR analysis were negative; no presence of Verotoxin-encoding phages was shown. No plaque was formed on blood agar base plates, indicating that no bacteriophages had been taken up by E. coli bacteriaThe levels of Verotoxin-encoding phages and E.coli outside the sewage treatment plant in Lysekil were not high enough to be able to form VTEC in mussels, indicating that the faecal contamination was low.
HÅRDROCKSSÅNG: Soundet, tekniken, medvetenheten : En kvalitativ studie av professionella hårdrockssångares röstanvändning
Detta examensarbete handlar om hårdrockssångares medvetenhet när det gäller sångteknik. Syftet med arbetet är att få kunskap om vilka tillvägagångssätt de har använt sig av när de skapat sitt sound och hittat sin teknik. Den teoretiska utgångspunkten för studien är det sociokulturella perspektivet. Tidigare forskning inom området behandlar traditionell röstlära, mer moderna sångskolor och socialkulturella normer gällande inlärning. Jag har använt mig av den kvalitativa forskningsintervjun som metod och mina informanter är verksamma inom området.
Beräkning av massbalanser för metaller i vatten samt miljöriskbedömning av Nerån vid Österbyverken i Östhammars kommun
Österbyverken is an industrial estate in Östhammars municipality in Uppland, Sweden. Many different activities have taken place on the estate the last 600 years. During the last 15 years both health and environmental studies have been made by different companies. At the most recent study a great increase of metals in Nerån, a river that runs partly through and partly next to the estate, was identified with mass balances. The purpose of this thesis is to accomplish a deepened study about the reasons for the increase of metals in Nerån.
Brandteknisk dimensionering av oskyddade träförband : En jämförelse mellan Eurocode 5 och alternativa metoder
AbstractThe assignment were assigned by Camatec Industriteknik AB. Camatec is a Karlstadlocated consulting company, they make everything from pilot studies to complete projects in mechanical design and calculation. They even have their own patented product, Camcoil. It is a winder for steel strips and is used for example with hardening of the steel strip. The assignment has been to solve the problems encountered by some customers within this product.