Sökning: "gas conditioning"

Visar resultat 6 - 10 av 31 avhandlingar innehållade orden gas conditioning.

1. 6. Gas Flow And Chemical Reactions In Submicron Channels

   Författare :Petronella Norberg; Michael Bowker; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : Through micromachining, it has become possible to realize mechanical structures of small dimensions with high reproducibility. There are numerous fields of application for such devices. The miniaturised structures have not only been used to improve existing techniques, but they have provided us with totally new possibilities. LÄS MER

3. 7. New refrigerants for vapour compression refrigeration and heat pump systems : evaluation in a context of the requirements set by the F-gas Regulation and the Paris Agreement goals

   Författare :Pavel Makhnatch; Rahmatollah Khodabandeh; Angelo Maiorino; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; refrigerant; retrofit; drop-in; HFC; HFO; F-gas Regulation; Kigali Amendment; Montreal protocol; Life cycle climate performance; LCCP; climate change; Energiteknik; Energy Technology;

   Sammanfattning : Given the global commitment to reduce the impact of fluorinated gases on climate and the regulations controlling their use in the European Union (EU), this thesis investigates new refrigerants that have been recently proposed to meet the demands of the refrigeration industry in the EU, which must satisfy the legislative requirements of the F-gas Regulation and facilitate meeting the goals of the Paris Agreement.The legislative requirements of the EU have intensified refrigerant development with reduced GWP. LÄS MER

4. 8. Novel Metal Oxide Bed Materials for Efficient Solid Fuel Gasification and Gas Clean-up in Fluidized Beds

   Författare :Martin Keller; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hot Gas Clean-up; Gasification; Dual Fluidized Bed; Chemical Looping Reforming; Chemical Looping Combustion; Tar reforming;

   Sammanfattning : In this work the utilization of some novel metal oxide bed materials in dual-fluidized bed gasification systems has been investigated. For this purpose, metal oxide based bed materials can be 1) directly utilized in the dual fluidized bed gasifier (DFB) or in the Chemical Looping Combustion (CLC) process in order to achieve higher gasification rates, or 2) employed in downstream hot gas conditioning processes, e. LÄS MER

5. 9. Flow injection systems for process analytical chemistry

   Författare :Ingrid Lukkari; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Flow injection; Sequential injection; Process analytical chemistry; Multivariate calibration; Sensor injection; Gas-diffusion; Sample clean-up;

   Sammanfattning : Flow injection systems have great potential for sample handling and analysis in process analytical chemistry. The flexibility and versatility of flow injection manifolds can he utilized in specific applications of sample conditioning and analysis. LÄS MER

7. 10. Inflammation and Cell Profileration Following Perinatal Brain Injury

   Författare :Katarina Järlestedt; Göteborgs universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; hypoxia-ischemia; immature brain; reactive gliosis; complement system; C3a; fear conditioning; lipopolysaccharide; inflammation;

   Sammanfattning : Inflammation plays an important role in cerebral ischemic injury in the immature brain. The aim of the thesis was to investigate (1) the role of astrocyte activation and reactive gliosis in neonatal hypoxic-ischemic (HI) brain injury, (2) the role of complement derived peptide C3a in neonatal HI brain injury, (3) the effect of neonatal HI brain injury on fear learning and behaviour, (4) the effects of lipopolysaccharide (LPS) induced systemic inflammation on cell proliferation in the developing brain. LÄS MER