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598 Uppsatser om Controlled Foam injektion (CFI) - Sida 3 av 40

Faktorer som påverkar sockerförlusten vid lagring av sockerbetor : inverkan av lagringstemperatur, lagringstid och vattentillgång

This thesis is a part of the project "Sustainable harvesting and storage of sugar beets, more sugar to practice". The work has included a large part of practical experimental work with weight measurement, graduation and storage planning. The aim of the project is to be able to see whether the cultivars react differently in different storage conditions. The project has included storage under controlled conditions to give as accurate results as possible. To be able to mimic the farmers own preconditions the samples was harvested with a conventional Holmer.This project has two parts, one concerning the nature, time and temperature on storage where a number of different cultivars where investigated during three different recording times, two different temperatures and controlled in a controlled environment.

Injektionskolets påverkan på finessammansättningen vid olika parameterinställningar i LKAB: s experimentmasugn

I utvecklingsarbetet för att minska energiförbrukningen och variationerna i råjärnskvalitet genom effektivare PCI (pulverized coal injection) har försök gjorts. Detta för att bidra med information om vilka förändringar som krävs för att minska stoftgenerering till följd av materialsönderfall och dålig förbränning i masugn. Stoft och slamprover uttagna under en försökskampanj från LKAB:s experimentmasugn (EBF) har analyserats för att jämföra vilka faser och kemisk sammansättning proverna innehåller. Under kampanjen har två olika kol (lågflyktigt kol A och högflyktigt kol B) injicerats med olika mängd och sätt att tillföra syret till masugnen. I slammet vid injektion med kol A och syreberikning genom lansen kunde kolet hittas i förening med kisel i SiC (kiselkarbid).

Att leda utan leda : En studie av ledarskap i klassrummet

In Sweden the latest curriculum, Lpo 94 was released in 1994. This document revolutionized the teaching profession. The school system was changed from a governmental control into a communal control. The earlier curriculums were controlled by rules; Lpo 94 is controlled by aims. This has led to a big spectrum of teaching styles which all of them agrees with the Lpo 94.Our purpose with this report is to illustrate two different leadershipstyles regarding the subject Swedish.

Detaljerad FE-modellering

Detta examensarbete beskriver undersökningen av kärnmaterial i en sandwichpanel under belastning. Arbetet har utförts tillsammans med CCG i Laholm, Sverige. Kärnmaterialen lämpar sig vid design av sandwichpaneler på grund av sin låga vikt och sin förmåga att klara av högt tryck. Då materialet uppvisar ett ickelinjärt beteende skapar det problem vid design av sandwichpaneler och leder till att materialsammansättningarna tillverkas konservativa mot verkligheten. Projektet har gått ut på reducera designprocessen genom att bygga upp och simulera materialmodeller i programvaran ABAQUS för att kunna analysera och förutse materialets beteende.

Indexeringskonsistens: En litteraturgenomgång och en undersökning i LIBRIS

The aim of this thesis is to investigate indexing consistency in LIBRIS, a Swedish national union catalogue, where searches can be carried out among almost five million titles. To calculate consistency, indexing terms of translations and indexing terms of documents in their original language have been compared. I have used a total of 100 such pairs in the study. There is a lot of different methods that can be used when consistency is calculated, in this study Hoopers and Rollings methods have been used since they are two of the most commonly methods used and also have the advantage of being fairly simple to use and understand. In the thesis, differences in consistency between indexing terms consisting of names and general indexing terms and differences in consistency between controlled indexing terms and uncontrolled indexing terms are also compared.

Syntes och egenskapskarakterisering av volframoxid framställd med magnetronsputtring

The system tungsten-oxygen has potential of being suitable for decorative coatings since ceramic coatings are often hard and wear resistant, and since modulations in oxygen content or incorporation of small ions could give bright colours. The aim of this report was to investigate the relationship between process parameters and  the properties of the films, with the wear resistance being of special interest.Samples with tungsten to oxygen ratios in the range of 100:0 to 25:75 at% were made using reactive sputter deposition, either with constant gas flow, or gas flow controlled by optical emission of the plasma. The hysteresis of the system, which means that a certain gas flow will cause different pressure and/or target voltage depending on in what way the flow is reached, makes it interesting to control the process where the system makes the steep change from metallic tungsten to ceramic tungsten oxide. This is difficult and thus requires precise control equipment.The samples were analysed using X-ray diffraction, X-ray photoelectron spectroscopy and an empirical wear test suitable for small components like cell phone cover for example, in order to characterize the structure, composition and wear resistance of the coatings. The results could be divided into three groups: (I) tungsten-like, with very low oxygen content; (II) mixed phase and (III) tungsten oxide like, with oxygen content close to 75 at%.

Energieffektivisering av luftningssteget på Käppalaverket, Lidingö

This master thesis in energy optimization was made during the autumn of 2006 at Käppala wastewater treatment plant in Lidingö, Stockholm. A preceding thesis, where all electricity consumption was mapped, showed that the aeration in the biological treatment is the single largest consumer in the plant, and it is therefore of interest to reduce this cost. The oxygen control strategy used at Käppala WWTP is working well from a nutrient removal point of view, but not from an economic one. The last aerobic zones have a very low oxygen consumption during low loading periods which give rise to enhanced dissolved oxygen concentrations with excessive costs and reduced denitrification as a result. But also during periods of normal loading unnecessary high oxygen concentration are sometimes given.By modifying the aeration control strategy three full-scale experiments have been made, with the intention to reduce the air consumption.

Produktutveckling av mobil förstahjälpenstation

This thesis is about a part of the marquetrytechnique, scorching. Scorching is made by heating up something, put a veneer into the heated substance and make a controlled burning. This technique is old but still used today and have according to me great potential for development. In my work I wanted to give the scorching greater room then I earlier have seen. I wanted the scorching to be the dominant ingredient for a decorative element in a piece of furniture or an interior.

Vad avgör om en patient skrivs ut tidigt eller sent vid dagkirurgi med intravenös anestesi som sövningsmetod

Dagkirurgi verksamheten ökar och det pågår en debatt om vilken anestesiform som är mest lämpad för denna verksamhet. Snabb återhämtning, god kvalitet, kostnadseffektivitet och få biverkningar är målen för att få patienten att kunna gå hem samma dag. En kvantitativ studie med en enkät framkonstruerad för studiens syfte utfördes. Syftet med studien var att undersöka vad om avgör om en patient skrivs ut tidigt eller sent vid dagkirurgi med övningsmetod intravenös anestesi Target Controlled Infusion TCI eller Total Intraveös Anestesi TIVA. 20 stycken patienter på en dagkirurgisk avdelning observerades postoperativt av ansvarig sjuksköterska, som fyllde i frågorna i enkäten.

Ämnesordstilldelning ? en praktik i förändring. En jämförelse mellan författares och indexerares ämnesordstilldelning.

The aim of this paper is to compare subject headings by the authors of the work and those administrated by professional indexers. The empirical setting for the study lies within the sociological discipline. The questions asked are:? What overall similarities and differences between subject headings administrated by authors versus indexers can we find?? What qualitative advantages and disadvantages can we establish between subject headings generated by natural language versus controlled vocabularies?Subject headings in the Swedish national library catalogue Libris and in five Swedish universities platforms for academic publishing are studied and compared. Today it is praxis at Swedish universities that administration of subject headings is done by authors and not by professional indexers.

Hur personer med smärta av WAD upplever vardagen.

The aim of this study was to describe how persons with Whiplash associated disorder experience how the pain affects them in their daily life. The design of the study was descriptive with qualitative, individual interviews, questionnaire with background facts of the examination group, and diary notes from persons with pain of WAD. Method for selection was convenience. Through contact with the association of whiplash group in a county in middle of Sweden, the majority of the examination group for the study was found. Five persons where given information about the study, one of them choose not to take part of the study, and one of the persons did not complete the study.

Kontrollerat och okontrollerat språk En litteraturstudie i informationsåtervinning i databaser.

This thesis deals with one of the main questions within information science: The question about controlled and uncontrolled vocabulary and which of the two that are most effective when it comes to retrieve relevant information from electronic databases. The method used here is literature studies. I have described and examined five empirical studies which has been done in purpose to compare the effectiveness in retrieval with controlled and uncontrolled vocabulary, in the way they are used in retrieval of information in databases. The studies I have examined have also used recall and precision as a value to measure the effectiveness of retrieval. The studies which I have chosen is also limited to deal only with studies that have been done in bibliographic databases.

Brännskuggat fanér - en metodanalys

This thesis is about a part of the marquetrytechnique, scorching. Scorching is made by heating up something, put a veneer into the heated substance and make a controlled burning. This technique is old but still used today and have according to me great potential for development. In my work I wanted to give the scorching greater room then I earlier have seen. I wanted the scorching to be the dominant ingredient for a decorative element in a piece of furniture or an interior.

En fjärran framtid : införande av digital teknik i gruvor

Traditionally, mining has been performed mechanically with implementation ofyesterdays (and older) data. Several mining companies have started to useautonomous technology and robotics in the production areas although the harshmining environments make it unsuitable for today's electronic equipment. Despite allthe obstacles along the way of digitization, there seems to be no end in sight as thisdevelopment continues. This thesis focuses on what the mining industry is aiming forand why the mining companies are interested in these technologies. The actors of themining industry can be found to have a vision for the future mine, a production with ahigher degree of digitization and resemblances to a factory.

Elektronisk motorstyrning för ottomotorer

The combustion engines in today?s vehicles are getting more and more advanced and there are increasing demands on that the engines should operate during optimal conditions. Examples of internal combustion engine parameters which may be carefully controlled are the rate between fuel and air, that this gas mixture is homogenous enough and that it is ignited at the correct moment. Moreover, the requirements of these parameters vary depending on, among other, engine speed and load. To meet these requirements in all occurring operation conditions, it is required that many subsystems work together.

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