Browsing Bergen Open Research Archive by Author "Zimmermann, Boris"
Now showing items 1-5 of 5
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An automated approach for fringe frequency estimation and removal in infrared spectroscopy and hyperspectral imaging of biological samples
Solheim, Johanne Heitmann; Borondics, Ferenc; Zimmermann, Boris; Sandt, Christophe; Muthreich, Florian; Kohler, Achim (Journal article; Peer reviewed, 2021)In infrared spectroscopy of thin film samples, interference introduces distortions in spectra, commonly referred to as fringes. Fringes may alter absorbance peak ratios, which hampers the spectral analysis. We have previously ... -
Chemical variations in Quercus pollen as a tool for taxonomic identification: Implications for long-term ecological and biogeographical research
Muthreich, Florian; Zimmermann, Boris; Birks, Harry John Betteley; Vila-Vicosa, Carlos M; Seddon, Alistair (Journal article; Peer reviewed, 2020)Aim Fossil pollen is an important tool for understanding biogeographical patterns in the past, but the taxonomic resolution of the fossil‐pollen record may be limited to genus or even family level. Chemical analysis of ... -
Comment on "Dying in the Sun: Direct evidence for elevated UV-B radiation at the end-Permian mass extinction"
Seddon, Alistair William Robin; Zimmermann, Boris (Journal article; Peer reviewed, 2023)Liu et al. present evidence of increased abundance of UV-B–absorbing compounds in fossilized sporomorphs at the end-Permian mass extinction based on Fourier transform infrared (FTIR) spectroscopy. Their approach assumes ... -
Deep learning-enabled Inference of 3D molecular absorption distribution of biological cells from IR spectra
Magnussen, Eirik Almklov; Zimmermann, Boris; Blazhko, Uladzislau; Dzurendová, Simona; Dupuy--Galet, Benjamin Xavier; Byrtusova, Dana; Muthreich, Florian; Tafintseva, Valeria; Liland, Kristian Hovde; Tøndel, Kristin; Shapaval, Volha; Kohler, Achim (Journal article; Peer reviewed, 2022)Infrared spectroscopy delivers abundant information about the chemical composition, as well as the structural and optical properties of intact samples in a non-destructive manner. We present a deep convolutional neural ... -
Fossil pollen and spores as a tool for reconstructing ancient solar-ultraviolet irradiance received by plants: an assessment of prospects and challenges using proxy-system modelling
Seddon, Alistair; Festi, Daniela; Robson, T. Matthew; Zimmermann, Boris (Peer reviewed; Journal article, 2019)Ultraviolet-B radiation (UV-B, 280–315 nm) constitutes less than 1% of the total solar radiation that reaches the Earth's surface but has a disproportional impact on biological and ecological processes from the individual ...