Sökning: "fluctuation model"

Visar resultat 11 - 15 av 53 avhandlingar innehållade orden fluctuation model.

  1. 11. On Fast-Ion Transport and Burn Control in Tokamaks

    Författare :Fredrik Wising; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Fast ions, generated by e.g. neutral beam injection (NBI), radio frequency (RF) heating or nuclear reactions, play an important role in all large tokamaks. Several issues related to fast ions and burning fusion plasmas are addressed in this thesis. LÄS MER

  3. 12. Experimental and computational studies of turbulent separating internal flows

    Författare :Olle Törnblom; Arne V. Johansson; Michel Stanislas; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fluid mechanics; turbulence; flow separation; turbulence modelling; asymmetric diffuser; boundary layer; PIV; vortex generator; separation control; Fluid mechanics; Strömningsmekanik;

    Sammanfattning : The separating turbulent flow in a plane asymmetric diffuser with 8.5 degrees opening angle is investigated experimentally and computationally. The considered flow case is suitable for fundamental studies of separation, separation control and turbulence modelling. LÄS MER

  4. 13. Use of novel statistical methods in assessing particulate air pollution and evaluating its association with mortality in China

    Författare :Xin Fang; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Particle matter (PM) has been associated with numerous adverse health effects including cardiovascular disease, chronic obstructive pulmonary disease and lung cancer in experimental studies and observation studies. The close and quantitative relationship between exposure to high concentrations of coarse particles (PM10) and fine particles (PM2. LÄS MER

  5. 14. Quantitative Trait Evolution in a Changing Environment in a Seed Beetle

    Författare :Lára R. Hallsson; Mats Björklund; Derek A. Roff; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; quantitative trait; genetic variance; environmental change; temperature; seed beetle; sexual dimorphism; plasticity; inheritance; Animal Ecology; Zooekologi;

    Sammanfattning : During the last decades the climate has been changing more rapidly than in the preceding periods. This is for instance characterized by an increase in temperature. Interestingly, such changes in the environment are not necessarily constant over time as they often show high levels of fluctuation. LÄS MER

  7. 15. The interplay between quark and hadronic degrees of freedom and the structure of the proton

    Författare :Hazhar Ghaderi; Stefan Leupold; Gunnar Ingelman; Thomas Gutsche; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : We study the low-energy sector of the strong interaction which is the least understood part of the Standard Model, the theory that describes the interactions of all known particles. The ideal particles for this study are the proton and the neutron, collectively called the nucleon. LÄS MER