Essays about: "spectral signature"

Showing result 11 - 15 of 20 essays containing the words spectral signature.

  1. 11. A detailed study of auroral fragments

    University essay from Uppsala universitet/Institutionen för fysik och astronomi; Uppsala universitet/Institutet för rymdfysik, Uppsalaavdelningen

    Author : Joshua Dreyer; [2019]
    Keywords : aurora; fragments; Svalbard; all-sky camera; MSP; ASK; EISCAT;

    Abstract : Aurora occurs in various shapes, one of which is the hitherto unreported phenomenon of auroral fragments. For three periods of occurrence of these fragments their properties were studied in detail during this master’s thesis, using mainly ground-based instrumentation located near Longyearbyen on Svalbard, Norway. READ MORE

  3. 12. UAV based hyperspectral grassland monitoring in an alpine shallow erosion area : lessons learnt from classifying vegetation indicating shallow erosion risk

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : John Peitz; [2019]
    Keywords : Physical Geography; Ecosystem Analysis; Shallow Erosion; Blaiken; UAV; Hyperspectral Imaging; Alps; Grassland; Spectral Signatures; Geomatics; Earth and Environmental Sciences;

    Abstract : UAV based hyperspectral grassland monitoring in an alpine shallow erosion area Recent research in the Alps found that a reduction in grassland management is correlated to an increase in a certain type of shallow erosion areas called blaiken. This change also entails changes to the dominant grassland vegetation. READ MORE

  4. 13. Analysing Raman spectra of crystalline cellulose degradation by fungi using artificial neural networks

    University essay from Lunds universitet/Beräkningsbiologi och biologisk fysik - Genomgår omorganisation; Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation

    Author : Sebastian Hutteri; [2019]
    Keywords : Raman spectroscopy; artificial neural networks; saprotrophic fungi; cellulose; Physics and Astronomy;

    Abstract : This thesis investigates the use of artificial neural networks for classifying Raman spectra of partially degraded cellulose samples by fungal species. A multilayer perceptron configuration of 4 hidden layers and 128 hidden nodes was able to classify a set of 60 samples with an overall prediction accuracy of 0.55. READ MORE

  5. 14. Spectral investigation of the globular cluster M30

    University essay from Uppsala universitet/Observationell astrofysik

    Author : Scheutwinkel Kilian Hikaru; [2018]
    Keywords : M30; globular cluster; spectroscopy;

    Abstract : Globular cluster studies suggest that a signature in the spectra of RGB stars in a globular cluster are anti-correlations in Mg-Al and Na-O. In this work, a small sample of 12 RGB stars of the globular cluster M30 is investigated using VLT-UVES high-resolution spectrograph. READ MORE

  6. 15. Measuring the Optical Properties of Human Muscle Tissue using Time-of-Flight Spectroscopy in the Near Infrared

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

    Author : Staffan Strömblad; [2015]
    Keywords : photon; Time-of-Flight; muscle tissue; optical; spectra; Infrared; Physics and Astronomy; Technology and Engineering;

    Abstract : Optical spectroscopy is commonly used in technology and science today. The presence and concentration of a substance can be determined by its spectral signature, the typical wavelengths that are absorbed (or emitted) by the atoms or molecules. READ MORE