U
Ulf-Peter Hansen
Researcher at University of Kiel
Publications - 103
Citations - 3851
Ulf-Peter Hansen is an academic researcher from University of Kiel. The author has contributed to research in topics: Chlorophyll fluorescence & Gating. The author has an hindex of 33, co-authored 102 publications receiving 3677 citations. Previous affiliations of Ulf-Peter Hansen include University of Milan & Yale University.
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Journal ArticleDOI
A fluorometric method for the differentiation of algal populations in vivo and in situ.
Martin Beutler,Karen Helen Wiltshire,Bettina Meyer,C. Moldaenke,C. Lüring,M. Meyerhöfer,Ulf-Peter Hansen,Holger Dau +7 more
TL;DR: The method for algae differentiation described here opens up new research areas, monitoring and supervision tasks related to photosynthetic primary production in aquatic environments.
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Temperature sensing by plants: the primary characteristics of signal perception and calcium response.
TL;DR: This work applies different regimes of temperature changes with well-defined cooling rates to intact roots of Arabidopsis thaliana expressing the calcium-indicator, aequorin, and indicates that temperature sensing is mainly dependent on the cooling rate, dT/dt, whereas the absolute temperature T is of less importance.
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Determination of DPPH Radical Oxidation Caused by Methanolic Extracts of Some Microalgal Species by Linear Regression Analysis of Spectrophotometric Measurements
Kai Marxen,Klaus Heinrich Vanselow,Sebastian Lippemeier,Ralf Hintze,Andreas Ruser,Ulf-Peter Hansen +5 more
TL;DR: The demonstrated modified spectrophotometric method makes use of the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical and its specific absorbance properties to determination of the microalgae's methanolic extracts antioxidative potentials which was independent to the employed DPPH concentrations.
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Interpretation of current-voltage relationships for "active" ion transport systems: I. Steady-state reaction-kinetic analysis of class-I mechanisms.
TL;DR: A simple reaction-kinetic model to describe electrogenic pumping and co- (or counter-) transport of ions, which accommodates many known properties of proton-transport systems, particularly as observed in “chemiosmotic” or energy-coupling membranes.
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Role of the plasma membrane proton pump in pH regulation in non-animal cells
TL;DR: Possible methods by which eukaryotic cells can regulate intracellular pH (pHi) in response to experimental acid loading were investigated by using as a model cell the fungus Neurospora, starting from the fact that this organism possesses a powerful electrogenic proton extrusion pump.