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Visar resultat 1 - 5 av 14 avhandlingar som matchar ovanstående sökkriterier.

  1. 1. The origin of iron ores in Bergslagen, Sweden, and their relationships with polymetallic sulphide ores

    Författare :Nils Jansson; Paul Spry; Luleå tekniska universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Malmgeologi; Ore Geology;

    Sammanfattning : The Bergslagen mining district of southern Sweden is one of Europe’s classic mining districts with more than 1 000 years of mining history. One of the typical features of Bergslagen is a spatial association between Zn-Pb-Ag-(Cu-Au) sulphide deposits and magnetite-rich Fe oxide deposits. LÄS MER

  3. 2. The origin of the Ryllshyttan stratabound Zn-Pb-Ag-(Cu) + magnetite deposit, Garpenberg, Bergslagen, Sweden

    Författare :Nils Jansson; Luleå tekniska universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Malmgeologi; Ore Geology;

    Sammanfattning : Ryllshyttan is a Palaeoproterozoic lower amphibolite-facies poly-metamorphosed stratabound Zn-Pb-Ag-(Cu) + magnetite deposit. It is located in the Garpenberg inlier of the Bergslagen mining district of southern Sweden and produced ~ 1 Mt sulphide ore and ~ 0.4 Mt magnetite ore from the early 16th century until 1944. LÄS MER

  4. 3. Challenges with Driverless and Unattended Train Operations

    Författare :Emil Jansson; Oskar Fröidh; Nils O.E. Olsson; Ingrid Johansson; Carl-William Palmqvist; Olov Lindfeldt; Ronghui Liu; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Railway; Automatic train operation; Driverless trains; Train driver; Roles; Automation challenges; Human senses; Trackside sensors; Transportsystem; Transport Systems; Transportvetenskap; Transport Science;

    Sammanfattning : Demand for transportation continues to increase, for both freight and passenger services. One of the most energy-efficient modes of transportation is rail. One solution to increase the attractiveness of rail transport is to introduce automatic train operation (ATO) with a high grade of automation (GoA). LÄS MER

  5. 4. Ett möte mellan två skrivkulturer : Några högstadieungdomars syn på och bruk av skrift vid skol- respektive privatskrivande

    Författare :Nils Larsson; Olle Josephson; Gunilla Jansson; Theres Bellander; Stockholms universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; literacy; sociolinguistics; school writing; private writing; gender and writing; bilingualism and writing; digital writing; secondary school; nordiska språk; Scandinavian Languages;

    Sammanfattning : The aim of this study is to shed light on and describe a number of secondary school students’ writing practices and their attitudes towards these practices.The material used in the study comes from a secondary school in a suburb of Stockholm where most of the students are bilingual. LÄS MER

  7. 5. Bulten och arbetskraftsinvandringen : Analys av ett industriföretags rekryteringstrategier åren 1947-1967

    Författare :Olle Jansson; Lars Magnusson; Sofia Murhem; Nils Edling; Uppsala universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Migration; arbetskraftsinvandring; rekrytering; efterkrigstiden; verkstadsindustri; Ekonomisk historia; Economic History;

    Sammanfattning : .... LÄS MER