Sökning: "teknologi"

Visar resultat 1 - 5 av 566 avhandlingar innehållade ordet teknologi.

1. 1. Små barns tecken- och meningsskapande i förskola : Multimodalt görande och teknologi

   Författare :Sara Hvit Lindstrand; Eva Björck-Åkesson; Marita Lindahl; Jönköping University; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; young preschoolers; meaning making; literacy; multimodality; preschool; technology;

   Sammanfattning : This thesis explores how activities that young children are engaged in within the preschool environment, can be understood in terms of early language and literacy processes. The overall aim is to construct knowledge about young children’s spontaneous sign processes as well as meaning making and early literacy processes in preschool. LÄS MER

3. 2. Driving technology and development : Usability studies of gear shifters with variations in pattern, stability and design

   Författare :Sanna Lohilahti Bladfält; Jessica Körning-Ljungberg; Camilla Grane; Lisa Öman Ekervhén; Anna-Lisa Osvalder; Luleå tekniska universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Usability; Gear shifter; Monostable; Polystable; Shift-by-wire; Engineering Psychology; Teknisk psykologi;

   Sammanfattning : Over the last few decades, the development of technology used in cars has moved forward at a very intensive pace. The focus has started to shift from the technology to the human as a user. LÄS MER

4. 3. Industrialization of Services : Technology and Routinization in the 21st Century

   Författare :Richard Backteman; Niklas Arvidsson; Eric Giertz; Anna Jonsson; KTH; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Industrialization; services; knowledge; technology; Industrialisering; tjänster; kunskap; teknologi; Industriell ekonomi och organisation; Industrial Economics and Management;

   Sammanfattning : Sweden has a long tradition of process improvements, productivity increments, waste reduction in manufacturing, continuing a mode of industrialization that helped achieve prosperity. With growing urban centers, mechanization of agriculture, outsourcings by manufacturing and the public sector with subsequent acquisitions, large service firms have appeared in an ever-growing service sector. LÄS MER

5. 4. Catalytic conversion of syngas to higher alcohols over MoS2-based catalysts

   Författare :Robert Andersson; Magali Boutonnet; Sven Järås; Anders Holmen; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; conversion; higher alcohols; mixed alcohols; MoS2; syngas; Chemical Engineering; Kemiteknik;

   Sammanfattning : The present thesis concerns catalytic conversion of syngas (H2+ CO) into a blend of methanol and higher alcohols, an attractive way of producing fuels and chemicals. This route has the potential to reduce the oil dependence in the transport sector and, with the use of biomass for the syngas generation, produce CO2-neutral fuels. LÄS MER

7. 5. Deactivation of cobalt and nickel catalysts in Fischer-Tropsch synthesis and methanation

   Författare :Javier Barrientos; Magali Boutonnet; Claude Mirodatos; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; cobalt; nickel; Fischer-Tropsch synthesis; methanation; deactivation; carbonyl; sintering; carbon fomation. sulfur; poisoning; Chemical Engineering; Kemiteknik;

   Sammanfattning :             A potential route for converting different carbon sources (coal, natural gas and biomass) into synthetic fuels is the transformation of these raw materials into synthesis gas (CO and H2), followed by a catalytic step which converts this gas into the desired fuels. The present thesis has focused on two catalytic steps: Fischer-Tropsch synthesis (FTS) and methanation. LÄS MER