Sökning: "anna wistrand"
Visar resultat 1 - 5 av 18 avhandlingar innehållade orden anna wistrand.
1. Mellan närhet och distans : Lärar-elevrelationen som kunskapsinnehåll i grundlärarutbildning
Sammanfattning : This licentiate thesis takes its point of departure in a relational perspective on education, which means that the relationship between teacher and student is seen as fundamental for students’ knowledge- and personal development. The aim is to contribute to a deeper understanding of the teacher-student relationship in teacher education at national and local levels and the different meanings of closeness in this context. LÄS MER
2. Degradable copolymers in additive manufacturing: controlled fabrication of pliable scaffolds
Sammanfattning : Inom vävnadsregenerering är produktionen av väldefinieradematriser med en porös arkitektur av nedbrytbara polymerer av stortintresse, dessa kan nu skapas genom additiva tillverkningsprocesser. Vidadditiv tillverkning krävs ett smalt munstycke för att skapa detaljrikastrukturer och detta ställer krav på att de reologiska egenskapernaanpassat. LÄS MER
3. Microwave heating effects on degradation and migration of additives from polypropylene packaging
Sammanfattning : The effect of different food types, polymer qualities and microwaves on the overall and specific migration during microwave heating of plastic packaging was investigated to better understand the packaging-food interactions and the effect of microwaves on food packaging. This work focuses on the migration of chemical compounds to food simulants from commercially available polypropylene packages. LÄS MER
4. Agro-Waste Derived Additives for Polylactide and Tapioca Starch
Sammanfattning : Development of materials from renewable resources is one of the big challenges facing our world. In this thesis agro-industrial waste derivatives were developed and evaluated as additives for two common renewable polymer matrices, polylactide (PLA) and starch. Two waste products, wood flour (WF) and rice bran (RB) were evaluated in different forms. LÄS MER
5. Thiol−ene Coupling of Renewable Monomers : at the forefront of bio-based polymeric materials
Sammanfattning : Plant derived oils bear intrinsic double-bond functionality that can be utilized directly for the thiol–ene reaction. Although terminal unsaturations are far more reactive than internal ones, studies on the reversible addition of thiyl radicals to 1,2-disubstituted alkenes show that this is an important reaction. LÄS MER