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Showing result 1 - 5 of 16 essays matching the above criteria.

  1. 1. Bio-based resins for digital light processing : Mechanical and degradable properties

    University essay from KTH/Materialvetenskap

    Author : Moa Eklund; Amanda Olofsson Ribrant; [2023]
    Keywords : Digital Light Processing 3D Printing DLP ; Additive manufacturing; Bio-based; Polymer; Thermosets; Covalent Adaptable Networks CANs ; Recycling; Characterization.; Digital Light Processing 3D Printing DLP ; Additiv tillverkning; Bio-baserad; Polymer; Härdplast; Kovalenta Anpassningsbara Nätverk CANs ; Återvinning; Karaktärisering.;

    Abstract : Thermosets are appropriate materials for various applications due to benefits such as heat resistance and good mechanical properties. The disadvantages of traditional thermosets from a sustainable manufacturing perspective are that they are usually derived from fossil resources, and also have permanent cross-linked networks that are difficult to break, making them non-recyclable. READ MORE

  3. 2. Biobased Photocurable Resins for 3D-Printing of Self-Healable & Recyclable Thermosets

    University essay from KTH/Fiber- och polymerteknologi

    Author : Anna Gardell; Maria Aspenberg; Julia Aziz; [2022]
    Keywords : vanillin; vitrimer; imine; resin; dynamic covalent bonds; biobased thermoset; photocuring; chemical recyclability; self-healing; digital light processing DLP ; 3D-printing; vanillin; vitrimer; imin; resin; dynamiska kovalenta bindningar; biobaserad härdplast; fotohärdning; kemisk återvinningsbarhet; självläkning; digital light processing DLP ; 3D-utskrift;

    Abstract : Överkonsumtionen av engångsartiklar i fossilbaserad plast är ett av dagens stora miljöproblem. Således finns en efterfrågan på strategier för framställning av biobaserade plaster i allmänhet och härdplaster i synnerhet. READ MORE

  4. 3. Summative assessment of oral language proficiency : Four Swedish EFL teachers’ views on communicative competence, grading criteria and strategy use

    University essay from Linnéuniversitetet/Institutionen för didaktik och lärares praktik (DLP)

    Author : Malin Schultz; [2020]
    Keywords : oral fluency; oral interaction; knowledge requirements; grading; threshold levels; interviews; grounded theory; Swedish upper secondary school; syllabus for English;

    Abstract : Assessment is one of the major struggles for EFL teachers, not least oral proficiency assessment. Considering the great influence of communicative competence on today’s EFL classroom, oral language proficiency is a common source of assessment. However, it is also difficult to assess, and grading criteria are not always easy to interpret. READ MORE

  5. 4. Reducing or reproducing gender norms : An ethnographic study based on observations in Ugandan preschools

    University essay from Linnéuniversitetet/Institutionen för utbildningsvetenskap (UV); Linnéuniversitetet/Institutionen för didaktik och lärares praktik (DLP)

    Author : Sanna Olsson; Elsa Joelsson; [2020]
    Keywords : Agenda 2030; education; equality; gender; ethnography; observation; preschool; teachers.;

    Abstract : The purpose of this study is to contribute, with knowledge of conceptions of male and female, to Ugandan preschools and to study in what ways gender norms in the Ugandan society are reflected and developed in the daily activity in preschools. The theoretical underpinnings used in this study are social constructive and inspired by Butler, Connell and Pearse among others. READ MORE

  6. 5. Motivation as a key to oral interaction : How 7 to 9-grade teachers in Sweden stimulate pupils' oral interaction in the English classroom

    University essay from Linnéuniversitetet/Institutionen för didaktik och lärares praktik (DLP)

    Author : Nille Oxelind; [2020]
    Keywords : EFL teaching; motivation; oral interaction; Willingness to Communicate; WTC;

    Abstract : Pupils who want to learn English as a foreign language, EFL, need to practice speaking. This is a necessity, not least since this skill is crucial when communicating with others. When pupils lack this inclination, EFL teachers have to know how to engage them in oral interaction. READ MORE