Sökning: "Jan Brandt"

Hittade 4 avhandlingar innehållade orden Jan Brandt.

  1. 1. On constitutive modelling of the compaction and sintering of cemented carbides

    Författare :Jan Brandt; Viggo Tvergaard; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : The common manufacturing procedure for components of cemented carbide is a closed die cold compaction of a powder and a subsequent sintering of the compact to full density and strength.Major problems with the manufacturing process are the possible fracturing on ejection from the tooling and the distortion in the final shape. LÄS MER

  3. 2. Developmental and Reproductive Toxicity of Progestagens in the Xenopus (Silurana) tropicalis Test System

    Författare :Moa Säfholm; Cecilia Berg; Ingvar Brandt; Jan Olsson; Louis Guillette; Uppsala universitet; []
    Nyckelord :Xenopus tropicalis; sex organ differentiation; oogenesis; fertility; ovary; oviduct; progestagens; Biologi med inriktning mot ekotoxikologi; Biology with specialization in Environmental Toxicology;

    Sammanfattning : Progestagenic compounds are emerging contaminants found in surface and ground water around the world. Information on the effects and potency of progestagens is needed in order to understand the environmental risks posed by these compounds. LÄS MER

  4. 3. Perceptions of mathematics in preschool: "-Now we have a way of talking about the mathematics that we can work with"

    Författare :Maria Johansson; Birgit Brandt; Luleå tekniska universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Mathematics Education; Matematik och lärande;

    Sammanfattning : The overarching question for this thesis is what is preschool mathematics? This question is examined using different points of views or different perspectives such as the children’s, the preschool teachers and the researchers. The foundation for this thesis is seven articles, two single author articles and five co-authored articles. LÄS MER

  5. 4. Rethinking designing : collaborative probing of work and workplace change

    Författare :Åsa Wikberg-Nilsson; Eva Brandt; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Industrial Design; Industriell design;

    Sammanfattning : The objective of the research presented in this thesis was to explore human experiences as ground for work and workplace design. The aim was to develop pragmatic tools and guidelines for work and workplace design based on a reflective design tradition. LÄS MER