Search for dissertations about: "explosions"

Showing result 6 - 10 of 62 swedish dissertations containing the word explosions.

  2. 6. Shock wave effects on the vascular endothelium

    Author : Anders Sondén; Karolinska Institutet; Karolinska Institutet; []
    Keywords : Shock waves; cavitation; explosions; high-energy missile trauma; ESWL; laser; endothelial cells; cell membrane damage; cytoskeleton; adhesion molecules; reactive oxygen species;

    Abstract : A shock wave is a pressure wave with high amplitude and a velocity above sound. Man is exposed to shock waves (SWs) in connection with trauma, e.g. explosions and high-energy missiles and medical treatments such as extracorporeal lithotripsy (ESWL). READ MORE

  4. 7. Supernova remnants and their pulsar wind nebulae

    Author : Natalia Lundqvist; Göran Olofsson; Robert Fesen; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; pulsars; supernovae; ISM; Astronomy; astronomi;

    Abstract : Massive stars die in powerful stellar explosions, so-called supernovae. In most cases, a neutron star or a black hole is expected to form in the center. The ejected material in these explosions expands out into the surroundings for tens of thousands of years, forming a supernova remnant. If a rapidly rotating neutron star, i. READ MORE

  5. 8. Analysis of regional seismic data by means of higher-order spectra

    Author : Leif Persson; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Earth sciences; Geovetenskap; Earth sciences; Geovetenskap; Geofysik med inriktning mot seismologi; Geophysics with specialization in Seismology;

    Abstract : The use of higher-order statistical and spectral estimators as complementary analysis for conventional regional seismic data processing is studied. The issues addressed are; the properties of the complex bispectrum of regional seismic phases, the experimental detection performance of higher-order statistical detectors, discrimination between local earthquakes and explosions, statistical tests and bicoherence, biphase and spatial bispectrum analysis of regional P-, S, and Lg-phases. READ MORE

  6. 9. The Circumstellar Environment of Type Ia Supernovae

    Author : Raphael Ferretti; Rahman Amanullah; Ariel Goobar; Josh Simon; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Type Ia supernovae; extinction; supernova cosmology; fysik; Physics;

    Abstract : Type Ia supernovae (SNe Ia) have proven to be extremely useful for measuring cosmological distances and were used for the discovery of the accelerated expansion of the universe. Although thousands of SNe Ia have been observed to date, many questions surrounding the physics of the explosions and the nature of their progenitor systems remain unanswered. READ MORE

  7. 10. Dust in the early universe

    Author : Erik Elfgren; Luleå tekniska universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fysik; Fysik;

    Abstract : This Licentiate thesis treats the impact of early dust on the Cosmic Microwave Background (CMB). The dust that is studied comes from the first generation of stars, which were hot and short-lived, ending their lives as giant supernovæ. READ MORE