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Visar resultat 1 - 5 av 73 avhandlingar som matchar ovanstående sökkriterier.

1. 1. Screening of oxygen-carrier particles based on iron-, manganese-, copper- and nickel oxides for use in chemical-looping technologies

   Författare :Marcus Johansson; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Oxygen Carrier; Carbon Dioxide Capture; Chemical-Looping Combustion; Chemical-Looping Reforming; Nickel Oxide; Iron Oxide; Copper Oxide; Manganese Oxide;

   Sammanfattning : Capture and storage of carbon dioxide from combustion will likely be used in the future as a method of reducing emissions of greenhouse gases and thus be part of the overall strategy to stabilize the atmospheric levels of CO2. Chemical-looping combustion is a method of combustion where CO2 is inherently separated from the non-condensable components in the flue gas without the need for an energy intensive air separation unit. LÄS MER

3. 2. Design and Operation of a 10 kWth Chemical-Looping Combustor for Solid Fuels

   Författare :Nicolas Berguerand; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Interconnected Fluidized Beds; Oxygen Carrier; Chemical-Looping Combustion; Carbon Dioxide Capture; Solid Fuel Conversion;

   Sammanfattning : The use of a 10 kWth chemical-looping combustor for solid fuels was investigated. The unit was designed, dimensioned and built and two types of fuel were tested: a South African coal and a petroleum coke from Mexico. Chemical-looping combustion is an alternative to normal combustion for CO2 capture. LÄS MER

4. 3. Mechanisms of adhesive mixing for drug particle inhalation (Numerical investigation of the interplay between formulation variables)

   Författare :Mohammadreza Tamadondar; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Discrete Element Method; Agglomerate; Carrier Particle; Adhesive mixing; Dispersion; DPI-formulation;

   Sammanfattning : Formulation of therapeutic dry powders for lung drug delivery via inhalation is done via adhesive mixing. In this process, micron-sized active pharmaceutical ingredient particles are blended with relatively coarse carrier particles until stable adhesive units of carrier and drug particles are formed. LÄS MER

5. 4. The application of single fibre fragmentation to spruce tracheids

   Författare :Carl-Henrik Ljungqvist; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fibre morphology; fibril angle; strain to failure; spruce tracheids; single fibre fragmentation; Weibull statistics; fibre properties; cell wall damage; image analysis;

   Sammanfattning : .... LÄS MER

7. 5. Gas chromatography - mass spectrometry of sugars and related hydroxy acids as trimethylsilyl derivatives

   Författare :Göran Petersson; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; mass spectrometry; hydroxy acids; gas chromatography; pulping; monosaccharides;

   Sammanfattning : The application of gas chromatography and mass spectrometry has contributed to the rapid progressof carbohydrate chemistry during the past ten years. Themethods are indispensable tools in current research oncarbohydrate reactions during pulping processes. LÄS MER