Essays about: "synligt ljus"
Showing result 1 - 5 of 35 essays containing the words synligt ljus.
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1. Development of chitosan nanocomposite coatings for visible-light photocatalytic antiviral applications
University essay from KTH/Tillämpad fysikAbstract : During the global pandemic of coronavirus, the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) outbreak, the world was desperately searching for simpler yet more effective solutions to stop the spread of coronavirus (COVID-19). Since no one was prepared for the fast spread of such a contagious virus, there was a shortage of proper protective solutions to stop the spread. READ MORE
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2. Surface Guided Helical Tomotherapy for Total Marrow Irradiation
University essay from Lunds universitet/SjukhusfysikerutbildningenAbstract : Background: Total marrow irradiation (TMI) with helical tomotherapy treatment (HT-TMI) can be used as conditioning regimen for leukemia patients prior to stem cell transplantation by radiating the skeletal tissue. To ensure adequate dose coverage a margin is applied to the clinical target volume (CTV), i.e. planning target volume (PTV) margin. READ MORE
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3. An Infrared Stellar Thermometer: Exploiting IGRINS Spectra
University essay from Lunds universitet/Astronomi - Genomgår omorganisationAbstract : Using the infrared (IR) spectral range when measuring stellar spectra is beneficial compared to using the optical range mainly when observing distant stars through the dust dense interstellar regions in the Galactic mid-plane. Methods to determine stellar parameters from IR spectra are, however, not fully developed yet because technological difficulties in creating reliable IR detectors have slowed the advance of such methods. READ MORE
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4. Dwarf Galaxies in the Galactic Potential as probes of its internal structure
University essay from Lunds universitet/Astronomi - Genomgår omorganisationAbstract : Satellite galaxies on bound orbits around the Milky Way (MW) are constantly subject to tidal forces from the MW. If the tidal forces are large enough, they may strip the outermost stars of the satellite, that in turn distribute themselves in long elongated stellar streams. READ MORE
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5. 2D & 3D phase retrieval for propagation-based X-ray phase-contrast tomography
University essay from Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionenAbstract : Propagation-based X-ray phase-contrast tomography is a 3d imaging technique that utilizes two-dimensional projections from different angular views $\theta =[0,\pi]$ to reconstruct the 3D object information. The phase-contrast allows for higher feature contrast than conventional transmission tomography, as the phase interference gives rise to a sharp edge contrast. READ MORE