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1328 Uppsatser om Laboratory materials - Sida 64 av 89

Kvalitetssäkring av migreringsprocessen

I den här uppsatsen försöker vi författare reda ut problematiken med hur den s.k. migreringsprocessen kan kvalitetssäkras. Syftet är inte att nödvändigtvis komma fram till en fullständig lösning på problemet, utan att skapa ökad förståelse och förutsättningar för att lösa problemet. En migrering är, i arkiveringssammanhang, en flytt av data mellan lagringsmedium, filformat, systemmiljöer eller en kombination av dessa, för att kunna bevara ett digitalt material tillgängligt över generationer av datateknologi. Exempelvis en flytt av ett digitalt materials data från ett gammalt lagringsmedium till ett nyare, för att det gamla lagringsmediet är på väg att bli obrukbart.

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.

Design av dörr till kaffeautomat : Designing a door to a coffee vending machine

This report was written as a result of a Bachelor Degree Project at the School of Technology and Society at University of Skövde spring 2007, together with Jede AB in Mariestad. The report covers the development of a door to a coffee vending machine that is under construction, and will in a chronological order describe the project from ideas to final product.The project started with a rather extensive feasibility study that thru market research and user tests sorted out the opinions of potential customers, concerning today?s available assortment. Technical areas concerning materials and manufacturing methods were also scrutinized for the consideration of the possibilities of a future production.The next step was to constructively generate ideas and thoughts that later on could grow to be potential solutions. After several weeks of hard work and pieces of good advice and recommendations from the assigner, four comprehensive concepts were built up.

Hantering av skadade styrstavar

The thesis was performed at Forsmarks Kraftgrupp AB in the department ofmechanical engineering, FTCM. Forsmark nuclear power plant has had problems with cracks in some of the controlrods which are placed in the reactor at Forsmark 3. To investigate the cause of this,material samples were taken from five of the damaged control rods. This sampling ofthe rods resulted too short rods to be transported in the shipping container to theinterim storage facility for used nuclear fuel in Oskarshamn. Control rods are crucial components in a nuclear reactor, regulating the reactoreffect by blocking or unblocking fuel rods. Control rods which have been in thereactor are always handled under water in order to protect against the radiation theyemit. The task was to design a control rod adapter that extends the control rod sotransport can be performed from Forsmark. The goal of the work was a complete setof blueprints so the control rod adapter can be manufactured and mounted on theshort control rods and then be transported to the interim storage facility. The work began with mapping of how control rods normally being handled from thereactor to the interim storage facility.

Etnicitet och demokratisering i dagens Rwanda : En kvalitativ studie om etnicitet och demokratisering i Rwanda

The purpose of this study is to explain if the existence of ethnic groups in Rwanda has complicated its democratization and explain what opportunities Rwanda has to be democratized. To fulfill the purpose of the study, I intend to answer two questions: 1) Does the existence of ethnic groups obstructed democratization in Rwanda? and 2) What opportunities has Rwanda to be democratized? To answer the first research question Dahl's theory of subcultures and democratization is used and to answer the second research question van de Walle's theory of democratization is used in the region of sub-Saharan Africa. Literature used in the study are Dahl's Polyarchy and van de Walle Africa?s range of regimes and Freedom House annual reports.

Energieffektivisering i ett reningsverk för skogsindustriellt avloppsvatten genom förfällning av extraktivämnen

Pulp- and papermills expend vast amounts of water in order to produce pulp, paper and cardboard. Hence, they alsocreate vast amounts of waste water which has to be cleaned before it can be released into the receiving body of water. Insuch a wastewater treatment plant, tremendous amounts of energy are expended by the aeration in the biologicalcleaning process. This aeration is necessary to supply the microorganisms that shall decompose organic material withoxygen, which they need for their metabolism. The transfer of oxygen from the gas phase to the liquid phase isprimarily inhibited by surface-active substances in the waste water like resin acids or fatty acids.

Hallsta Pappersbruks virkesförsörjning

Competition of spruce fiber raw materials has increased dramatically in the last few years, leading to the fact that transportation costs in the current situation represents a much larger share of the total raw material cost. The Holmen-owned pulp industry Hallsta Paper Mill's location on the coast also constitutes a problem, because of the lack of raw material, which is much larger there, than for a pulp mill located in the hinterland. For a coastal industry it?s therefore natural to import much of the raw material by boat or to buy it from the timber terminals, in order to maintain good profitability. The purpose of this study was to analyze how the size of Hallsta Paper Mill timber supply area, without competition, with competition and with terminal use, affects the company ?s transport costs.

Förekomst av salmonella spp hos katter i Sverige

Salmonella in cats has been documented for many years. Infection with S. Typhimurium,which is often referred to as Songbird fever, is believed to be caused by birds whoinadvertently infect cats. The disease is often seen during the springtime when songbirdsreturn from their winter habitats, while other birds who have stayed during the winter are intheir weakest condition of health. In the spring of 1999 an epidemic of S.

Skillnader i följsamhet och förutsättningar för basala hygienrutiner mellan personal inom kommunal- och sjukhusvård samt tillgången av skyddsmaterial

AbstractThe purpose of this study was to describe and compare the degree of selfreporting succession to the basal hygienic routines of emplyees working in municipal old peoples care versus hospital care. It is also to describe the access of material available in prevention of cross infections. The study was also carried out with a comparative and quantitative run up design. The study is based on a questionnaire in the district of Gävleborg in the spring of 2009. Nurses, auxiliaries and carers whom were in close contact with patients were asked to join the study.

Gestaltning av tillfälliga städer : en undersökning om egenskaper och gestaltningsprinciper

Designing temporary cities is a study of the design and physical planning of five temporary cities. The purpose was to discuss and note the important questions to be considered, when designing the outdoor environment in temporary cities to create as good an environment for the visitor as possible. The five cities I have chosen are among the most famous ones in Scandinavia, and they represent different kinds of temporary cities. This was a deliberate choice to achieve diverse research material, and with that a broad view of what the planning stage generally looks like. Study of the cities has been done through interviews with the people responsible for the design and/or physical planning of each city.

Utveckling av en äldre villaträdgård : från oplanerad till planerad

The result of this work is a plan for the development of an 1128 m2 elderly raised garden. The purpose has been to create an overall plan covering the long-term development of the garden. The work process has covered a description of the garden of today, review of requirements, analysis of the garden sections, design of a new plan as well as starting the construction of the new garden. The plan covers a time period of a couple of years to create the new garden since the construction work is carried out during spare time with small resources available. The planning must contain review of functions such as protection from insight, eating area and compost area. Also the esthetic expression must be planned. Colors, shapes, choice of material and plants together make up the esthetic expression. It is recommended to include anything you wish to create in the garden. In a raised garden one has to overcome the step to remove trees and shrubs and think different.

Organisationens påverkan på förbättringsarbete : En fallstudie av fo?rba?ttringsarbete och fo?rslagsverksamhet vid Volvo Powertrain

This thesis was commissioned by Volvo Powertrain, where manufacturing and assembling of transmissions is performed, which is used in the company's trucks and buses. The thesis has consisted of a case study that intends to study the problem areas in the current proposed activities and continuous improvements in the assembly department in the Volvo Powertrain facility.In the current situation, the proposals that are submitted by the employees suggest mainly minor improvements. The proposals concern for example, labelling of materials boxes and holders for tools, which do not generate any significant profit for the company. Directors and executives want an increased amount of proposals with a more results-oriented type, in terms of reduced costs, time consumption and stops, and improved quality. The company would also deal with the problems that arise when implementing improvements in the production.

Lönndörren och nycklarna : En analys av förhållandet till en samhällskritisk dramatradition i Anna Wahlenbergs Lönndörren

AbstractSwedish tuition for immigrants (SFI) is a public adult education program in Sweden that was created in order to provide the immigrants with basic skills in Swedish. People with different backgrounds speaking different languages learn together how they should communicate in Swedish, both orally and in writing. For those who teach SFI it is important to know which factors have positive effects on the Swedish language acquisition. One of the questions to be asked is if the learning materials´ genre has any effect on the SFI students´ proficiency, in particular, oral proficiency. Scientists as von Franz, Vygotskiy and Bettelheim argued that fairy tales, as a genre consciously or subconsciously recognizable by all the people, present texts that are easy to acqiure.

Polismans laga befogenhet att skjuta : förhållandet till tredje man i teorin och i praktiken

This study aims to develop knowledge of different professional groups and their views on inclusion and collaboration concerning "students in difficulty." Through qualitative interviews and a quantitative survey, the researcher sought answers to this and also how inclusion, through collaboration between different professional groups, can develop in school.The results of the study have been analyzed according by Nilholms (2007) three different perspectives on special education: The critical perspective, the compensatory perspective and the dilemma perspective. The results were also analyzed based on Ahlberg's (2013) communicative ? relationship perspective.The result shows that the concept of inclusion is not clearly defined either in the governing documents or among the interviewees. This makes it difficult to speak the same language in school, which complicates the work of inclusion. Since the governing documents are unclear and somewhat contradictory when dealing with "students in difficulty" educators are put in a dilemma.

FlowGoLow ? Energieffektivisering för hemmet

Inför detta arbete hade vi en förväntad leverans att utgå ifrån, en stor del av dessa förväntningar låg i att redogöra för användningen av adresserings- och identifieringsteknik inom Sandvik SMT?s (Sandvik Materials Technology, affärsområde inom Sandvik AB) lagerytor. Under arbetets gång har dock strukturen förändrats och denna rapport kom att bygga mer på utformingen och styrningen av ett lager. För att på ett effektfullt sätt visa på, hur ett lager under optimala förhållanden utformas och styrs så tog vi litteraturen till hjälp och utformade en modell som vi sedan använt i vårt arbete. Syftet med detta examensarbete kom därför att handla om att skapa en modell för att utforma och styra lager inom industriell verksamhet.Modellen tar upp de faktorer som är viktiga för utformning och styrning av befintliga lagerytor eller nya lagerytor som skapas.

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