Sökning: "Bonding"

Visar resultat 21 - 25 av 604 avhandlingar innehållade ordet Bonding.

  1. 21. Coteaching chemical bonding with Upper secondary senior students : A way to refine teachers PCK

    Författare :Felix Schultze; Pernilla Nilsson; Zimmerman Nilsson Marie-Helene; Anna Vikström; Linköpings universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Coteaching; pedagogical content knowledge; pck; chemical bonding; representations; chemistry education; chemistry didactic;

    Sammanfattning : The aim of this study was to investigate how an experienced chemistry teacher gains and refines her pedagogical content knowledge (PCK) by cooperating with two grade 12 students (age 18) as coteachers while teaching chemical bonding in a grade 10 Upper secondary class. The study has been conducted from a sociocultural perspective, especially Vygotsky’s zone of proximal development (ZPD) (Vygotsky, 1978). LÄS MER

  3. 22. The influence of surface microroughness on wafer bonding

    Författare :Mats Bergh; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; AFM; hydrophilic; surface roughness; diamond; silicon-on-insulator; poly silicon; silicon-on-diamons; atomic force microscope; wafer bonding; SOI; aluminum nitride; hydrophobic;

    Sammanfattning : .... LÄS MER

  4. 23. Teaching and learning of chemical bonding models : Aspects of textbooks, students’ understanding and teachers’ professional knowledge

    Författare :Anna Bergqvist; Shu-Nu Chang Rundgren; Pernilla Nilsson; Ingo Eilks; Karlstads universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemical bonding models; Pedagogical content knowledge; Teachers professional development; Chemistry education; Students learning; Kemi; Chemistry;

    Sammanfattning : Despite the growing importance of science and technology in society, school students consider these subjects irrelevant and hard to learn. Teachers must therefore know how to teach science in ways that enhance students’ understanding and interest. LÄS MER

  5. 24. Theoretical Studies of Two-Dimensional Magnetism and Chemical Bonding

    Författare :Oleksiy Grechnyev; Olle Eriksson; Alexander Lichtenstein; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; spin Hamiltonians; quantized spin models; Heisenberg model; spin waves; self-consistent spin-wave theory; dipolar interaction; density functional theory; chemical bonding; overlap population; MAX phases; metal hydrides; Fysik; Physics; Fysik;

    Sammanfattning : This thesis is divided into two parts. In the first part we study thermodynamics of the two-dimensional Heisenberg ferromagnet with dipolar interaction. This interaction breaks the conditions of the Mermin-Wagner theorem, resulting in a finite transition temperature. LÄS MER

  7. 25. Manufacture of long-fibre reinforced ceramics by reaction bonding

    Författare :Jesper Brandt; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; weaves; slurry infiltration; fibre; aluminium oxide; reaction bonding; ceramic matrix composite; mullite; silicon nitride; alumina; CMC;

    Sammanfattning : For several decades ceramic matrix composites has been of interest to be used as hot parts in certain high-performance gas turbine aero engines. In general, ceramic materials resist higher temperatures than superalloys. LÄS MER