Search for dissertations about: "Magnus Hultén"

Showing result 1 - 5 of 7 swedish dissertations containing the words Magnus Hultén.

2. 1. Nature's Canon : The Formation and Change of the Science Curriculum in Swedish Compulsory School 1842–2007

   Author : Magnus Hultén; Ingrid Carlgren; Svein Sjøberg; Stockholms universitet; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Compulsory school; Science education; Curriculum history; Textbook; Primary; Secondary; Ideology; naturkunskap; naturkunnighet; naturorientering; naturvetenskap; folkskola; grundskola; lärmedel; läroböcker; lärobok; läroplansteori; läroplanshistoria; innehåll; ideologi; utbildning; fysik; kemi; biologi; Education; Pedagogik; pedagogik; Education;

   Abstract : This dissertation analyses the science curriculum in Swedish compulsory school 1842–2007. National curricula, textbooks, textbook adverts, and handbooks are analysed. These all have a strong position in defining the school curricula and their contents, methods and aims, and can therefore be called canonic texts. READ MORE

4. 2. The compression/absorption heat pump : modelling and comparisons

   Author : Magnus Hultén; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Abstract : .... READ MORE

5. 3. The compresson/absorbtion heat pump - modelling and comparisons

   Author : Magnus Hultén; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Abstract : .... READ MORE

6. 4. Encountering Evolution : Children's Meaning-Making Processes in Collaborative Interactions

   Author : Johanna Frejd; Magnus Hultén; Karin Stolpe; Konrad Schönborn; Christina Siry; Linköpings universitet; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Meaning-making processes; Science Education; Evolution; Multimodality; Collaborative Interaction; Exploratory studies; Meningsskapandeprocesser; Naturvetenskapsundervisning; Evolution; Multimodalitet; Interaktion; Explorativa studier;

   Abstract : This thesis explores preschool class children’s meaning making processes when they encounter evolution. By adopting social semiotic and sociocultural perspectives on meaning making, three group-based tasks were designed. Video data from the activities were analysed using a multimodal approach. READ MORE

7. 5. Fenton Pre-treatment of a Birch Kraft Pulp for MFC preparation

   Author : Pia Hellström; Helena Håkansson; Anette Heijnesson Hultén; Magnus Paulsson; Monica Ek; Karlstads universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Microfibrillated cellulose; Fenton chemistry; carbonyl groups; surface charge; total charge; Enzymatic hydrolysis; Tensile strength; z-directional strength; Chemical Engineering; Kemiteknik;

   Abstract : The potential to use acidic hydrogen peroxide in the presence of ferrous ions (Fenton’s reagent) as a pre-treatment when producing microfibrillar cellulose (MFC) from a fully bleached birch (Betula verucosa) kraft pulp was investigated and the properties of the produced MFC was compared to the properties of a MFC produced with enzymatic pre-treatment with a monocomponent endoglucanase (FiberCare® R). The mechanical treatment to MFC was performed in a laboratory colloid mill or in a pilot high-pressure homogeniser and the pre-treated pulps as well as the produced MFCs were chemically and morphologically characterised. READ MORE