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1628 Uppsatser om Rare earth elements - Sida 40 av 109

Karaktärisering, utvärdering och avsättning av Stena Metalls magnetiska fines

With a growing population on earth the amount of end-of-life vehicles (ELVs) and other scrap steel increases. The European Directive 2000/53/CE? requires a minimum of 95 % reuse and recovery and 85 % re-use and recycling no later than 1 January 2015, for end-of life vehicles. This imposes a need for more efficient recycling and recovery. Despite this shredder residue (SR) is commonly land filled.This report investigated the magnetic fines residue generated at Stena Metall shredder facility in Halmstad, Sweden.

Dietary intake of zinc and iron within the female population of two farming villages in the Red River Delta, Vietnam

In many developing countries, among them Vietnam, contamination of agricultural land is a major issue that has public health implications. A fast growing population, rapid urbanization and industrialization have led to air and water emissions of potentially toxic elements (PTEs), such as cadmium (Cd). Earlier studies have shown that individuals with low iron (Fe) and zinc (Zn) status absorb larger quantities of Cd than those of adequate nutritional status. The purpose of this study was to investigate and compare the Fe and Zn intake from the foods consumed by women (15-45 years) in selected households in two agricultural villag-es in the Red River delta in Vietnam. In one of the villages the residents were involved in metal (mainly Fe) recycling activity, whereas in the other village the residents had agricul-tural production as main source of income. Interviews, followed by food intake calcula-tions, were performed.

Osäker vård? En fallstudie inom svensk hälso- och sjukvård

The swedish healthcare is in many situations one of the best in the world. But still, the healthcare system includes elemnts that reduce the efficiency. Partly becouse the swedish healthcare is largely monopolized, the servicecs are not properly prized and the economic responsibility and the liability legislation is limited. The main problem this study evolves around, is how a different liability rule would change the shape of the healthcare organisation. Abouve all, how would the approach to riskmanagement and preventive and riskreducing performance change with a diffrent liability rule.

Lärares pedagogiska val i undervisningen med vuxna illitterata andraspråksinlärare

Denna uppsats handlar om alfabetiseringsundervisning av vuxna andraspråksinlärare. Undersökningens syfte är att ta reda på några lärares pedagogiska val i sin alfabetiseringsundervisning, vad dessa val grundar sig på samt vad lärarna anser vara befrämjande undervisning för dessa elever. Undersökningen har en fenomenologisk infallsvinkel och består av kvalitativa intervjuer med fyra lärare på två olika skolor. Resultatet visar att lärarna anser det vara viktigt med hemklassrum, att de utgår ifrån elevernas verklighet och använder helst autentiskt material och bilder, samt betonar att repetition och konkretisering är viktiga pedagogiska metoder liksom förmågan att sätta sig in i elevernas situation. Lärarna anser att det som befrämjar elevernas inlärning är tillgång till modersmålslärare och speciallärare, en trygg arbetsmiljö och att lärarna ser eleverna som kompetenta individer.

Gamification av digitalt lärande : En studie av attityder om spelelement i lärplattformar

Society today is characterized by the transforming effect IT has had, the majority of the activities we perform on a daily basis involves one way or another digital technology. One area which has not yet seen the positive effects of IT is education. Despite the progress of technology, the school education has barely changed since it first saw the light of day. Our goal with this study is to investigate the possibility of implementing Gamification elements in educational environments and examine whether it could increase our young students learning motivation. We believe that this kind of implementation will have a positive effect for these young people since they have been interacting with games since they were small and are familiar with the driving force of a reward system.With this study we want to examine the opportunities and challenges that Gamification implementation brings out in a learning environment and therefore encourage and motivate our young ones to study even harder..

Modellering av reflektans från ett sockerbetsbestånd med hjälp av en strålningsmodell

The Multispectral Canopy Reflectance Model (MCRM) by Kuusk (1995) has beenused to simulate the reflectance of a sugarbeet canopy. The simulated reflectancevalues show high absorptance in the VIS area, compared to field measurements, andhigh reflectance values in the NIR area. The errors may be due to overestimation ofclorophyll content in the sugarbeet leaves and scattered light during fieldmeasurements. The estimation of the clorophyll content where carried out using thePROSPECT-model by Jacquemoud & Baret (1990).During the vegetation period, the state of the canopy moves towards a closed canopy,with sparse vegetation in spring. The MCRM-model was used to perform a ?spring?simulation, which was compared to the original simulation.

Utveckling av en metodik för att med hjälp av lagerföljdsdata och geografiska informationssystem (GIS) modellera och rekonstruera våtmarker i Skåne

Syftet med detta arbete är att, med hjälp av GIS och lagerföljdsdata, utforma en metodik för modellering och förståelse av våtmarker och deras utbredning. Metodiken ska, med hjälp av GIS, underlätta och förbereda för en mera automatiserad analys av lagerföljdsdata. Detta involverar flera steg: (1) Strukturering och urval av relevanta data utifrån en stor mängd geografisk och geologisk information; (2) framtagning av åldersmodeller utifrån daterade borrkärnor för beräkning av tillväxthastighet hos olika jordarter; (3) Utveckling och implementering av ett datorprogram för beräkning av våtmarksnivå vid olika tidssteg. Beräkningen skall baseras på de, utifrån åldersmodellerna, beräknade tillväxthastigheterna för jordarter i olika borrkärnor; (4) Interpolation av framräknade höjdvärden till kontinuerliga ytor där förändring av våtmarkernas area och volym vid olika tidpunkter kan bestämmas. I denna studie beräknades utbredningen för två våtmarker vid tiderna 0, 1000, 2000 och 6000 år sedan.

Praktisk och teoretisk matematik - Ur pedagogers synvinkel

In previous contact with secondary schools, we have noticed a dull setting for friluftsliv among teachers in Physical Education and Health. We suspected that both teaching and assessment are sometimes conducted in error. Under the provisions of Skolverket the teacher must involve all elements mentioned in the core content of the curriculum and the assessment of students' knowledge may be based only on what is expressed in the syllabus for each course. Research shows that the implementation of the curriculum have failed in the subjects investigated (Skolinspektionen, 2013:22). We have identified a gap of knowledge regarding the situation of friluftsliv in the course physical education 1.

GALS,Design och simulering för FPGA med VHDL

Heat, clock scew and frequency optimization are some of the problems a semiconductor designer must face. By splitting a synchrounous block into multiple pieces which comunicates asynchronously with eachother and provide them with independent clocks, these problems may be reduced. GALS (Global Asynchronous Local Synchronous) is a wrapper that wraps a synchronous block and provides it with a clock. Multiple GALS-elements will make the whole system. The clockfrequency may be independently adjusted between each block.

Alternativa verktyg, tillgänglighet och måluppfyllelse för elever i läs- och skrivsvårigheter : En fallstudie i årskurs 8 och 9

This study investigates how assistive technology tools are used in the classroom by students in reading and writing disabilities in the school years immediately prior to moving to gymnasium. Through observations and interviews with two students and two teachers this study also considers if the use of these tools can lead to increased accessibility and goal fulfilment, and whether these elements are prerequisites for success. The result shows that the students use laptops in the classroom, primarily for writing longer texts, and that in order to be successful, an early start, equipment, time and positive attitudes towards the tools are important. The students use the tools in the classroom, but they have very different feelings about how included they are in the class. The participants see a clear link between the use of assistive technology tools and increased goal fulfilment. .

Åtta röster gällande omplaceringar i skolan

This study is about relocated students in the school. Research in this area is limited and the aim is to illuminate the area by listening to different people's voices that have been close to or involved in relocations. The study was made of a qualitative method and the collection of data was through interviews. A total of eight people were included in the study. The selected municipality is located in Sweden.

Det är svårt att sätta fingret på : En studie om musik- och bildlärares syn på kreativitet

Studiens syfte a?r att underso?ka la?rares syn pa? begreppet kreativitet och vad det har fo?r plats i skolan. Fo?r att na? fram till det syftet valde vi intervju som metod, da?r vi har intervjuat fyra olika ho?gstadiela?rare varav tva? av dem har musik som inriktning medan de andra tva? undervisar i bild.I syftet inga?r ocksa? att ja?mfo?ra bild- och musikla?rarnas uppfattningar av begreppet, fo?r att se om det finns skillnader mellan a?mnena. Fo?r att genomfo?ra en ja?mfo?relse valdes att utforma intervjuns fra?gesta?llningar pa? sa? sa?tt att la?rarna hade mo?jlighet att ge fria svar.

Nya vägar i en föränderlig tid En fallstudie av ett folkbiblioteks bemötande av idén om utkontraktering av urvals- och inköpsfunktionen

Abstract: In this Master's thesis our aim is to study the situation and process regarding the decision to use outsourcing of the media acquisition function in a Swedish public library. By using New institutional theory, focusing on ways of organising and values in the organisation we are able to analyse this phenomenon. Skot-Hansens theory about three different culture political argumentation schemes, humanistic, sociological and instrumental (or market oriented), gives us the opportunity to place statements and facts into a functional theoretical context. The market oriented scheme is further clarified with the concept of New Public Management. The role of values in the institution, regarding aims and goals is stressed.

Hur säljare gör sitt val av fastighetsmäklare : en undersökning utförd i Stockholmsområdet

This essay puts its focus on examining vendors? underlying decision criterias when choosing an estate agent at the purpose of selling an apartment. The purpose is on one hand to expound the knowledge of the vendor?s decision process and on the other hand to evaluate how the choice of an estate agent is perceived to the vendor. By nine interviews we explored what reasons made vendors choose their agents and whether they were contented with their choice.

Utomhuspedagogik : En studie om lärares uppfattningar av utomhuspedagogik

In previous contact with secondary schools, we have noticed a dull setting for friluftsliv among teachers in Physical Education and Health. We suspected that both teaching and assessment are sometimes conducted in error. Under the provisions of Skolverket the teacher must involve all elements mentioned in the core content of the curriculum and the assessment of students' knowledge may be based only on what is expressed in the syllabus for each course. Research shows that the implementation of the curriculum have failed in the subjects investigated (Skolinspektionen, 2013:22). We have identified a gap of knowledge regarding the situation of friluftsliv in the course physical education 1.

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