Sökning: "sebastien"

Visar resultat 1 - 5 av 12 avhandlingar innehållade ordet sebastien.

1. 1. Polymeric Microcavities for Dye Lasers and Wavefront Shapers

   Författare :Sébastien Ricciardi; Ari T. Friberg; Mohamed Bourennane; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Optical physics; Optisk fysik;

   Sammanfattning : Over the last few years, the available computing power allows us to have a deeper insight into photonics components than we ever had before. In this thesis we use the finite element method (FEM) to explore the behavior of the waves in 2D planar microcavities. LÄS MER

3. 2. Work in voluntary welfare organizations : A sociological study of voluntary welfare organizations in Sweden

   Författare :Sébastien Chartrand; Göran Ahrne; Apostolis Papakostas; Stockholms universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; volunteering; work; voluntary organization; Sweden; employee; volunteer; organization; public sector; professionalization; folkrörelser; Sociology; Sociologi;

   Sammanfattning : Since Sweden has one of the most comprehensive welfare states, the role of voluntary organizations active in the field of welfare is often neglected. The unique Swedish nonprofit sector is characterized by 1) the tradition of popular mass movements in which members are central and the real owners of the organization, 2) large membership and volunteering, but low employment levels, 3) dominance in the fields of culture and recreation, but the relative marginalization in welfare. LÄS MER

4. 3. Carbon Recovery in A Dual Fluidized Bed Gasifier

   Författare :Sébastien Pissot; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; gasification; recycling; dual fluidized bed; chemical looping gasification; circular economy; carbon recovery; biomass; plastic waste;

   Sammanfattning : As the concept of a circular economy gains acceptance and awareness of climate change and its disastrous consequences increases, the ways in which we produce the carbon-based goods upon which so much of our economy depends need to change. Society must end its reliance on fossil carbon resources and shift to renewable sources that enable the establishment of a carbon cycle. LÄS MER

5. 4. Strategies for Complete Recovery of Carbon in Dual Fluidized Bed Gasifiers

   Författare :Sébastien Pissot; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; gasification; waste; dual fluidized bed; chemical-looping; carbon; circular economy;

   Sammanfattning : To establish a circular economy and curtail our dependency on fossil resources, technologies are needed to extract carbon from biomass and plastic waste. Dual fluidized bed (DFB) gasification is a carbon-extracting technology that offers flexibility in terms of its inputs, outputs, design, and operational conditions. LÄS MER

7. 5. On the Environmental Relevance of Platinum Group Elements

   Författare :Sebastien Rauch; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; platinum; ICP-MS; automobile emission; catalyst ageing; palladium; laser ablation; urban particles; bioaccumulation; rhodium;

   Sammanfattning : It has recently been demonstrated that platinum group elements (PGE) are released from automobile catalysts into the environment, raising concern over ecological and human health risks. However, there is still a lack of knowledge regarding the dispersion and transformation of PGE in the environment and it is therefore difficult to assess potential risks. LÄS MER