Search for dissertations about: "Photometry"

Showing result 26 - 30 of 30 swedish dissertations containing the word Photometry.

  2. 26. Study of MgB2 HEB mixers at THz frequencies

    Author : Evgenii Novoselov; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; noise temperature; mixers; bandwidth; THz detectors; superconductors; bolometers; conversion gain; MgB2;

    Abstract : The terahertz (THz) range is very attractive for astronomical observations. Spectroscopy and photometry of remote space objects in the THz range allows for a study of their chemical composition, because this range covers rotational lines from simple molecules and electron transition lines from atoms and ions. READ MORE

  4. 27. Inflammatory response after cataract surgery : randomized controlled clinical and laboratory studies of different surgical techniques

    Author : Carl-Gustaf Laurell; Karolinska Institutet; Karolinska Institutet; []
    Keywords : Cataract extraction; phacoemulsification; inflammation; blood-aqueousbarrier; anti-inflammatory agents; heparin surface modified intraocular lens; fluorophotometry; prostaglandins; after-cataract; corneal oedema; lasers; comparative study; randomize;

    Abstract : During the last few years the phacoemulsification technique for cataract extraction has improved considerably. Because of this development phacoemulsification has recently superseded extracapsular cataract extraction (ECCE) as the preferred method. READ MORE

  5. 28. Spectroscopic and kinetic studies of atmospheric oxygen emissions

    Author : Jacek Stegman; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : The terrestrial night sky spectrum Is dominated by emission features related to oxygen photochemistry. Photodissociation of molecular oxygen, the second most abundant atmospheric constituent Is the most efficient channel for converting solar electromagnetic radiation into chemical energy. READ MORE

  6. 29. The Pulsar and Nebula in SNR 0540-69.3

    Author : Linda Tenhu; Josefin Larsson; Göran Olofsson; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Atomic; Subatomic and Astrophysics; Atomär fysik; subatomär fysik och astrofysik;

    Abstract : Supernova remnants (SNRs) are the end products of supernova (SN) explosions. These explosions happen when certain massive stars face the ends of their evolutionary cycle and create shock waves propagating in the surrounding medium by ejecting part of the star’s material. An SNR is the region defined by these powerful shocks. READ MORE

  7. 30. Supernova surroundings on circumstellar and galactic scales

    Author : Anders Nyholm; Jesper Sollerman; Peter Lundqvist; Philip James; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; supernovae; circumstellar medium; SNe Type IIn; iPTF13z; intermediate Palomar Transient Factory; active galactic nuclei; SN 2014J; Astronomy; astronomi;

    Abstract : Some stars cease to be in a bright and destructive display called a supernova. This thesis explores what we can learn about supernovae (SNe) by studying their immediate surroundings, and what the SNe can teach us about their environments. READ MORE