731 research outputs found
Light-harvesting complex protein LHCBM9 is critical for photosystem II activity and hydrogen production in Chlamydomonas reinhardtii
No full textGrewe S, Ballottari M, Alcocer M, et al. Light-harvesting complex protein LHCBM9 is critical for photosystem II activity and hydrogen production in Chlamydomonas reinhardtii. The Plant Cell. 2014;26(4):1598-1611
Variability of blowfly head optomotor responses
No full textRosner R, Egelhaaf M, Grewe J, Warzecha A-K. Variability of blowfly head optomotor responses. Journal of Experimental Biology. 2009;212(8):1170-1184
Impact of climate variability on tropospheric ozone
No full textA simulation with the climate–chemistry model (CCM) E39/C is presented, which covers both the troposphere and stratosphere
dynamics and chemistry during the period 1960 to 1999. Although the CCM, by its nature, is not exactly representing observed
day-by-day meteorology, there is an overall model's tendency to correctly reproduce the variability pattern due to an inclusion of
realistic external forcings, like observed sea surface temperatures (e.g. El Niño), major volcanic eruption, solar cycle,
concentrations of greenhouse gases, and Quasi-Biennial Oscillation. Additionally, climate–chemistry interactions are included, like
the impact of ozone, methane, and other species on radiation and dynamics, and the impact of dynamics on emissions (lightning).
However, a number of important feedbacks are not yet included (e.g. feedbacks related to biogenic emissions and emissions due to
biomass burning). The results show a good representation of the evolution of the stratospheric ozone layer, including the ozone
hole, which plays an important role for the simulation of natural variability of tropospheric ozone. Anthropogenic NOx emissions
are included with a step-wise linear trend for each sector, but no interannual variability is included. The application of a number of
diagnostics (e.g. marked ozone tracers) allows the separation of the impact of various processes/emissions on tropospheric ozone
and shows that the simulated Northern Hemisphere tropospheric ozone budget is not only dominated by nitrogen oxide emissions
and other ozone pre-cursors, but also by changes of the stratospheric ozone budget and its flux into the troposphere, which tends to
reduce the simulated positive trend in tropospheric ozone due to emissions from industry and traffic during the late 80s and early
90s. For tropical regions the variability in ozone is dominated by variability in lightning (related to ENSO) and stratosphere–
troposphere exchange (related to Northern Hemisphere Stratospheric dynamics and solar activity). Since tropospheric background
chemistry is regarded only, the results are quantitatively limited with respect to derived trends. However, the main results are
regarded to be robust.
Although the horizontal resolution is rather coarse in comparison to regional models, such kind of simulations provide useful
and necessary information on the impact of large-scale processes and inter-annual/decadal variations on regional air quality
Funktionale Charakterisierung des Lichtsammelkomplexproteins LHCBM9 in stressinduzierten Anpassungsreaktionen von Chlamydomonas reinhardtii
No full textGrewe S. Funktionale Charakterisierung des Lichtsammelkomplexproteins LHCBM9 in stressinduzierten Anpassungsreaktionen von Chlamydomonas reinhardtii. Bielefeld; 2014
Les droits intangibles
No full textGrewe Constance. Les droits intangibles. In: Annuaire international de justice constitutionnelle, 26-2010, 2011. Constitutions et droit pénal - Hiérarchie(s) et droits fondamentaux. pp. 437-452
Chronique: Allemagne
No full textDagron Stéphanie, Fromont Michel, Grewe Constance, Jouanjan Olivier, Volmerange Xavier. Allemagne. In: Annuaire international de justice constitutionnelle, 22-2006, 2007. Autonomie régionale et locale et constitutions - La répartition des compétences normatives entre le parlement et le gouvernement. pp. 599-633
Outdoor performance of a motion-sensitive neuron in the blowfly
No full textEgelhaaf M, Grewe J, Kern R, Warzecha A-K. Outdoor performance of a motion-sensitive neuron in the blowfly. Vision research. 2001;41(27):3627-3637.We studied an identified motion-sensitive neuron of the blowfly under outdoor conditions. The neuron was stimulated by oscillating the fly in a rural environment. We analysed whether the motion-induced neuronal activity is affected by brightness changes ranging between bright sunlight and dusk, In addition, the relationship between spike rate and ambient temperature was determined. The main results are: (1) The mean spike rate elicited by visual motion is largely independent of brightness changes over several orders of magnitude as they occur as a consequence of positional changes of the sun. Even during dusk the neuron responds strongly and directionally selective to motion. (2) The neuronal spike rate is not significantly affected by short-term brightness changes caused by clouds temporarily occluding the sun. (3) In contrast, the neuronal activity is much affected by changes in ambient temperature. (C) 2001 Elsevier Science Ltd. All rights reserved
AMYGDALA AND CORTICAL GAMMA-BAND RESPONSES TO EMOTIONAL FACES DEPEND ON THE ATTENDED TO VALENCE
No full textWeidner E, Moratti S, Schindler S, Grewe P, Bien C, Kißler J. AMYGDALA AND CORTICAL GAMMA-BAND RESPONSES TO EMOTIONAL FACES DEPEND ON THE ATTENDED TO VALENCE. Psychophysiology . 2023;60(Suppl. 1):S158
Emotion and attention in face processing: Complementary evidence from surface event-related potentials and intracranial amygdala recordings
No full textWeidner E, Schindler S, Grewe P, Moratti S, Bien C, Kißler J. Emotion and attention in face processing: Complementary evidence from surface event-related potentials and intracranial amygdala recordings. Biological Psychology. 2022;173: 108399
Subjective memory complaints in patients with epilepsy: The role of depression, psychological distress, and attentional functions
No full textGrewe P, Nikstat A, Koch O, Koch-Stoecker S, Bien C. Subjective memory complaints in patients with epilepsy: The role of depression, psychological distress, and attentional functions. Epilepsy Research. 2016;127:78-86
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