Sökning: "elliptical"
Visar resultat 21 - 25 av 66 avhandlingar innehållade ordet elliptical.
21. Multi frequency interferometer studies of active and starburst galaxies
Sammanfattning : We report the results of a multi-frequency study of three interactinggalaxies: NGC 5218, NGC 1614 and NGC 4194 (the Medusa merger). These sourcesbelong to different classes of active and starburst galaxies. LÄS MER
22. Timing Diagnostics and Coherent Harmonics from a test-FEL
Sammanfattning : The test free-electron laser (test-FEL) at MAX-lab in Lund demonstrated for the first time circularly polarized coherent femtosecond pulses at 66 nm wavelength. A 375 MeV electron bunch was seeded by a femtosecond laser at 263 nm and coherent harmonics were extracted in an APPLE-II type elliptical undulator. LÄS MER
23. A study of the kinematics and nuclear structure of the barred spiral galaxies NGC 1365 and NGC 1512 and of the nuclear jet in NGC 3309
Sammanfattning : This thesis, which consists of 7 articles and a summary, deals with different aspects of the three galaxies NGC 1365, NGC 1512 and NGC 3309. Article 1 is a study of the nuclear spiral in the barred spiral galaxy NGC 1512. The velocities derived from optical spectra indicate an expansion of this spiral. LÄS MER
24. Aggregation of gluten proteins - from wheat seed biology to hydrogels : scientific modelling based primarily on Monte-Carlo and HPLC methods
Sammanfattning : Gluten proteins are intrinsically disordered proteins that form extensive aggregated networks in wheat seeds, where they are stored as a nutrient source for the embryo. A modelling approach involving computational biology with Monte-Carlo algorithms and wet laboratory studies, including HPLC analysis, was applied to unravel the aggregational and hydrogelforming properties of the gluten proteins. LÄS MER
25. Elastohydrodynamic Lubrication of Cam and Roller Follower Applications : Fast and Reliable Predictions of Friction
Sammanfattning : Modelling and simulation in tribology, and more specifically of friction in lubricated contacts, has gained increasing attention over the past years. In a lubricated contact, the dissipation of energy is due to the relative motion of the mating surfaces and arise due to direct contact as well as shearing of the lubricant film. LÄS MER