Sökning: "core content"

Visar resultat 21 - 25 av 328 avhandlingar innehållade orden core content.

  1. 21. 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

  3. 22. Application of magnetic nanoparticles and reactive filter materials for wastewater treatment

    Författare :Ramnath Lakshmanan; Gunaratna Kuttuva Rajarao; Erik Dahlquist; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Reactive filter materials; magnetic nanoparticles; wastewater treatment process; nutrient reduction; sludge water content; toxicity of magnetic nanoparticles;

    Sammanfattning : Lately sewage wastewater treatment processes (WWTP) are facing challenges due to strict regulations in quality of effluent standards and waste production. The reuse of wastewater treatment effluents is rapidly gaining attention as a means of achieving sustainable water supply. Therefore, new methods are required to achieve an efficient WWTP. LÄS MER

  4. 23. Structure, Morphology, and Catalytic Properties of CuOx/CeO2 Model Catalysts

    Författare :Björn Skårman; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Synchrotron radiation; High-energy Diffraction; X-ray Absorption Fine Structure Spectroscopy.; Chemical technology and engineering; Kemiteknik och kemisk teknologi; Chemistry; Kemi; Material technology; Materiallära; materialteknik; X-ray photoelectron spectroscopy; Atomic force microscopy; Gatan Image Filter GIF ; Energy-filtered TEM; High-resolution electron microscopy; Inert gas condensation IGC ; rf Magnetron sputtering; Thermal activation; Batch reactor; Carbon monoxide oxidation; Surface sensitivity; Catalytic anisotropy; Growth; Nucleation; Topography; Roughness; Core-shell structures; Morphology; Nanostructured; Nanocomposite; Nanoparticles; Surface structure; Polycrystalline surfaces; Thin films; Copper oxide; Cerium dioxide CeO2 ; Ceria;

    Sammanfattning : Cerium dioxide, or ceria, is a chemically stable oxygen ion conducting material with a capacity to store and release oxygen, and is therefore extensively used in combustion catalysts. The Cu-Ce-O system has been identified as one of the most active catalysts for the combustion of carbon monoxide. LÄS MER

  5. 24. Event stratigraphy for the Last Glacial-Holocene transition in eastern middle Sweden

    Författare :Jonas Björck; Michael J.C Walker; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Last Glacial-Holocene transition; event stratigraphy; eastern middle Sweden; pollen; plant macrofossils; marine calcareous fossils; microtephra; radiocarbon dating; clay varve chronology; GRIP; ice-core chronology; calendar year chronology; Preboreal oscillation; Yoldia Sea; Baltic Ice Lake; Quaternary Geology; kvartärgeologi;

    Sammanfattning : This thesis outlines an event stratigraphy for the Last Glacial-Holocene transition in eastern middle Sweden. Events are short-lived occurrences that have left traces in the geological record and which, therefore, may be used for correlation and inter-regional comparisons. LÄS MER

  7. 25. Den allvarsamma leken : Om World of Warcraft och läckaget

    Författare :Peder Stenberg; Alf Arvidsson; Billy Ehn; Charlotte Hagström; Umeå universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; Internet; online role-playing games; World of Warcraft; gender; virtual; bodies; computer; participatory play; game; gamestudies; ethnography; online; community; work; forum; role-playing; identity; fan fiction; user; intellectual property; production; user created content; Ethnology; Etnologi; Ethnology; etnologi;

    Sammanfattning : Through more than five years of extensive, participatory research the writer became a fully integrated member of the World of Warcraft community he set out to study. By actually living the grounded practices that constitute the everyday life he concludes that the mundane, often repetitive practice has very little to do with the cyber-utopian claim that one can flee the body and become who they want on the Internet. LÄS MER