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Showing result 1 - 5 of 34 essays matching the above criteria.

1. 1. The visibility of stellar transients in the Galactic Centre

   University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Astrofysik

   Author : Jonathan Ström; [2024]
   Keywords : Physics and Astronomy;

   Abstract : A semi-analytical simulation was developed to evaluate the K-band magnitudes of Red Giants [0.96 - 1.02 M⊙] orbiting the supermassive black hole in the galactic centre. The model assumed star formation between 10-12 Gyrs ago and by following the IMF and applying a random age condition, a stellar population was created. READ MORE

3. 2. Wavelength-dependent limb darkeningin the analysis oftransit spectroscopy of exoplanets

   University essay from Uppsala universitet/Institutionen för fysik och astronomi

   Author : Alberto García Ribas; [2023]
   Keywords : ;

   Abstract : Limb darkening, an optical effect characteristic of stars, where the limb (edge) seemsto be darker than the centre of the stellar body; plays an important role in our under-standing of exoplanetary transits, as it is fundamental for developing light curve modelsthat can help to undercover extrasolar companions. To recover atmospheric featuresfrom exoplanets, a principal component analysis method is typically used. READ MORE

4. 3. Low-energy radar for handheld IR-cameras : Using mmWave radar as a complement for Multi Spectral Dynamic Imaging in handheld cameras

   University essay from Umeå universitet/Institutionen för fysik

   Author : Sarwin Abdullah; [2023]
   Keywords : ;

   Abstract : The aim of this project is to assess whether a low energy radar, more specifically the mmWave radar from Acconer could be used as a complement to the handheld cameras from FLIR, in order to improve its performance, in particular the alignment of visual and infra-red image. The specific camera used for this project is a FLIR C5 IR-camera. READ MORE

5. 4. Lignin Biorefining: Swelling and activation of fibers for lignin extraction

   University essay from KTH/Fiber- och polymerteknologi

   Author : Ali Al Husseinat; [2023]
   Keywords : Biorefining; Carboxymethylation; Extraction; Lignin; Swelling; Bioraffinering; Extraktion; Karboxymetylering; Lignin; Svällning;

   Abstract : I världens omvandling mot en bioekonomi kommer lignocellulosa material spela en stor roll i ersättningen av fossila resurser. Lignin är den mest tillgängliga källan av förnybara och naturligt förekommande aromatiska ämne och den utgör 15–30% av ved. READ MORE

6. 5. Activity patterns of African buffalo (Syncerus caffer) and the transmission of East Coast Fever (ECF) to domestic cattle in Laikipia County, Kenya

   University essay from SLU/Dept. of Clinical Sciences

   Author : Alva Sellgren Molander; [2022]
   Keywords : Buffalo; Syncerus caffer; East coast fever; ECF; Theileria parva; Corridor disease; CD; Kenya; Laikipia;

   Abstract : In this study we examined the potential connection between East Coast Fever (ECF) and the local activity pattern of African buffalo in the Ol Pejeta Conservancy (OPC), in Laikipia county, Kenya. Buffalo activity was examined at OPC’s wildlife corridors, which work as the only gates for the animals to pass in and out of the area, by looking at approximately 32 000 pictures taken by infra-red cameras during the year 2019. READ MORE