Sökning: "steel"

Visar resultat 6 - 10 av 1392 avhandlingar innehållade ordet steel.

1. 6. Environmental preferences among steel stakeholders

   Författare :Stina Alriksson; Marianne Henningsson; Carl-Erik Grip; Anders Roos; Linnéuniversitetet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; conjoint analysis; environmental communication; focus group; light weighting; PLS; preferences; Q-methodology; risk perception; steel; stakeholders; Miljövetenskap; Environmental Science;

   Sammanfattning : Emissions of carbon dioxide, dioxins, nitrogen oxides and particulate matter as well as use of non-renewable resources and energy are some important sustainability challenges for the Swedish steel industry. Much effort has been made, mainly by technical solutions, which to a high degree have decreased the emissions during the last 30 years. LÄS MER

3. 7. A study of slag-steel-inclusion interaction during Ladle treatment

   Författare :Johan Björklund; Pär Jönsson; Voicu Brabie; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Ladle treatment; steel; slag; inclusions; ladle; refining; vacuum; tool steel; oxide activity; slag models; oxygen; equilibrium; Metallurgical process and manufacturing engineering; Metallurgisk process- och produktionsteknik;

   Sammanfattning : The thesis is based on two supplements with two major objectives. In the first supplement equilibrium top slag-steel bulk and inclusions-steel bulk were investigated by comparison between calculated and measured oxygen activity values. This was done by applying different oxide activity models for slags combined with thermodynamic calculations. LÄS MER

4. 8. Using Trees to Capture Reticulate Evolution : Lateral Gene Transfers and Cancer Progression

   Författare :Ali Tofigh; Jens Lagergren; Mike Steel; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Lateral Gene Tranfer; Horizontal Gene Transfer; Cancer Progression; Bioinformatics; Bioinformatik; Computer science; Datalogi;

   Sammanfattning : The historic relationship of species and genes are traditionally depicted using trees. However, not all evolutionary histories are adequately captured by bifurcating processes and an increasing amount of research is devoted towards using networks or network-like structures to capture evolutionary history. LÄS MER

5. 9. Influence of Ferrochromium and Ferromanganese Additions on Inclusion Characteristics of Steel

   Författare :Thobias Sjökvist; KTH; []
   Nyckelord :Non-metallic inclusions; Ferroalloys; Ferrochromium; Ferromanganese; SEM; Microprobe; Steel; Fullscale; SS111116; Bearing Steel;

   Sammanfattning : .... LÄS MER

7. 10. Steel Beyond Coal : Socio-Technical Change and the Emergent Politics of Steel Decarbonisation

   Författare :Valentin Vogl; Miljö- och energisystem; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Steel; coal; climate change; decarbonisation; socio-technical transitions; sustainability;

   Sammanfattning : The steel industry is responsible for 8% of all anthropogenic greenhouse gas emissions and is the second largest user of coal after the power sector. The main emission source in steel production is the blast furnace, which converts iron ore and metallurgical coal into pig iron that is then further refined into steel. LÄS MER