Sökning: "transport and reaction rates"

Visar resultat 6 - 10 av 41 avhandlingar innehållade orden transport and reaction rates.

1. 6. Numerical Simulation of Combustion and Gasification of Biomass Particles

   Författare :Fatehi Hesameddin; Strömningsteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Thermochemical Conversion; Pyrolysis; Gasification; Combustion; Biomass;

   Sammanfattning : In this thesis, a numerical approach is adopted to study biomass thermochemical conversion. Detailed physical and chemical processes involved in the thermochemical conversion of biomass are considered. LÄS MER

3. 7. Numerical simulations of the isotopic composition of stratospheric water vapour and methane

   Författare :Martin Ridal; Cornelius Schiller; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; meteorologi; Meteorology;

   Sammanfattning : The middle atmosphere is an important area of the Earth's atmosphere, but our understanding of the dynamical and chemical processes in that region is still limited. Water vapour and methane both fulfil the requirements for tracers due to their long lifetimes and have frequently been used to study dynamical processes. LÄS MER

4. 8. On the Course of Kraft Cooking - The impact of ionic strength

   Författare :Binh Dang; Chalmers tekniska högskola; []
   Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; molecular weight distribution.; hexenuronic acids; carbohydrate removal; delignification; sodium ion concentration; lignin; ionic strength; xylan; flow-through kraft cooking; kinetics;

   Sammanfattning : Kraft pulping is the dominant process currently used to produce chemical pulps, and has been applied for more than 130 years. A large number of studies have been conducted to gain a better understanding of the delignification kinetics as well as the reactions of the wood components being dissolved during the cooking process. LÄS MER

5. 9. Strong Light-Matter Coupling: the Road from Conventional to Cavity-Free Polaritons

   Författare :Adriana Canales Ramos; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fabry-Pérot microcavities; self-hybridized polaritons; Mie modes; Strong and ultrastrong coupling; Lorentz resonances; decay rates; cavity-free polaritons; Casimir force; 2D–crystals; plasmons; water droplets.; self-assembled microcavities;

   Sammanfattning : The interaction between light and matter is fundamental in perceiving and understanding the world. The interaction is typically weak, meaning light only perturbs matter without changing its properties. LÄS MER

7. 10. Strong light-matter coupling: from traditional to cavity-free polaritons

   Författare :Adriana Canales Ramos; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mie modes; cavity-free polaritons; Lorentz resonances; Polaritonic states; 2D-atomic crystals; ultrastrong coupling; strong coupling; Fabry-Pérot modes;

   Sammanfattning : Polaritons are formed when light and matter interact strongly. For this to occur, photons and transitions in a material must exchange energy faster than the dissipation rate of the interacting components. Polaritons have shown the ability to change such material properties as photophysics, chemical reaction rates, transport, etc. LÄS MER