Sökning: "lic Karlstad"

Visar resultat 6 - 10 av 211 avhandlingar innehållade orden lic Karlstad.

  1. 6. Effect of Latex Viscoelasticity on Strenght Developement and Calendar Runnability in Coated Paper and Board Production

    Författare :Roger Carlsson; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Chemical Engineering; Kemiteknik;

    Sammanfattning : .... LÄS MER

  3. 7. A study on wear characteristics of high strength steels under sliding contact

    Författare :Abdulbaset Mussa; Pavel Krakhmalev; Jens Bergström; Jens Hardell; Karlstads universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; High strength steels; thread joint wear; punch wear; sliding wear; surface cracking; reciprocal sliding; fatigue; surface delamination; white etching layer; nano-structured layer; friction; Materialteknik; Materials Engineering;

    Sammanfattning : In the last decades, significant improvements regarding the design, materials and technology of rock drills have been made. Likewise, in sheet metal forming, forming tools experience very high contact pressures when processing high strength steel sheets. LÄS MER

  4. 8. Models of chemical bonding : Representations Used in School Textbooks and by Teachers and their Relation to Students´Difficulties in Understanding

    Författare :Anna Bergqvist; Michal Drechsler; Shu-Nu Chang Rundgren; Pernilla Nilsson; Karlstads universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; pedagogical content knowledge; chemical bonding; textbook analysis; students learning difficulties; models in science education; Kemi; Chemistry;

    Sammanfattning : This thesis focuses on how school textbooks and teachers present models of chemical bonding in upper secondary schools in Sweden. In science, as well as in science education, models play a central role, but research has shown that they often are difficult for students to understand. LÄS MER

  5. 9. Understanding the Influence of Wood Extractives on Off-Gassing during Storage of Wood Pellets

    Författare :Workson Siwale; Jonas Berghel; Gunnar Henriksson; Michael Finell; Stefan Frodeson; Gunnar Johansson; Karlstads universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Off-gassing; Carbon Monoxide; Carbon Dioxide; Methane; Self-heating; Additive Oils; Fatty and Resin Acids; Solid Biofuels; Miljö- och energisystem; Environmental and Energy Systems;

    Sammanfattning : Wood pellets have become a solid biomass fuel of choice because they are a standardized product with known quality properties. However, the self-heating and off-gassing tendencies during storage of wood pellets threatens the consistency of the pellets’ quality properties. LÄS MER

  7. 10. Perceived Accessibility : Capturing the Traveller Perspective

    Författare :Katrin Lättman; Margareta Friman; Lars E Olsson; Annika Nordlund; Karlstads universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; perceived accessibility; accessibility scale; transport planning; public transport; social inclusion; social exclusion; Psykologi; Psychology;

    Sammanfattning : The main purpose of this thesis is introducing and proposing perceived accessibility as an important and so far overseen complement to conventional, objective accessibility in sustainable transport. Perceived accessibility is defined as the possibilities and ease of engaging in preferred activities using different transport modes. LÄS MER