Sökning: "Particle interactions"

Visar resultat 1 - 5 av 426 avhandlingar innehållade orden Particle interactions.

1. 1. MATTER-ANTIMATTER INTERACTIONS : The hydrogen-antihydrogen system and antiproton-matter interactions

   Författare :Henrik Stegeby; Roland Lindh; Dage Sundholm; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; antimatter; antiproton; matter-antimatter interactions; hydrogen-antihydrogen system; Kemi med inriktning mot kvantkemi; Chemistry with specialization in Quantum Chemistry;

   Sammanfattning : Ever since antiparticles were discovered their nature has been something of a mystery. They were postulated to be identical to regular particles except for having opposite charge, but this would imply that an equal amount of antiparticles and particles should have been created at the beginning of time. LÄS MER

3. 2. Particle-fluid interactions under heterogeneous reactions

   Författare :Thamali Rajika Jayawickrama; Kentaro Umeki; Nils Erland L. Haugen; Matthaus Babler; Muhammad Aqib Chishty; Henrik Ström; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Stefan flow; drag coefficient; Nusselt number; Sherwood number; particle-fluid flow; reacting flow; Energy Engineering; Energiteknik;

   Sammanfattning : Particle-fluid flows are involved in many natural processes and industrial applications; some examples are drying, solid fuel combustion, gasification, and catalytic cracking. It is vital to understand the phenomena involved in particle-fluid flows in depth for design, predictions and process improvements. LÄS MER

4. 3. Particle-fluid interactions under heterogeneous reactions

   Författare :Thamali Rajika Jayawickrama; Kentaro Umeki; Henrik Ström; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Stefan flow; drag coefficient; particle-laden flow; reacting flow; Energiteknik; Energy Engineering;

   Sammanfattning : Particle-laden flows involve in many energy and industrial processes within a wide scale range. Solid fuel combustion and gasication, drying and catalytic cracking are some of the examples. It is vital to have a better understanding of the phenomena inside the reactors involving in particle-laden flows for process improvements and design. LÄS MER

5. 4. Particle dynamics during biomass devolatilization : Momentum exchange and particle dispersion

   Författare :Angel David Garcia Llamas; Kentaro Umeki; Rikard Gebart; Per Gren; Peter Glarborg; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Biomass; devolatilization; rocketing; PIV; PTV; Energiteknik; Energy Engineering;

   Sammanfattning : Devolatilization is a heat-driven thermochemical process in which a liquid or a solid fuel releases mass in the form of volatile compounds after drying, as a result of the combination of endothermic and exothermic reactions. It differs from pyrolysis in that it does not require an inert atmosphere and that the reactant must be either solid or liquid. LÄS MER

7. 5. Particle interactions at the nanoscale : From colloidal processing to self-assembled arrays

   Författare :Bertrand Faure; Lennart Bergström; Albert Philipse; Stockholms universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Colloidal processing; nanoparticles; colloidal forces; titania; iron oxide; Hamaker constant; surface modification; rheology; Monte Carlo simulations; collective properties; superparamagnetism; finite-size effects; Materials Chemistry; materialkemi;

   Sammanfattning : Nanostructured materials are the next generation of high-performance materials, harnessing the novel properties of their nanosized constituents. The controlled assembly of nanosized particles and the design of the optimal nanostructure require a detailed understanding of particle interactions and robust methods to tune them. LÄS MER