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Bayreuth, Germany

The intention of the educational concept "school in motion" is to promote a healthy lifestyle and an active school life. holistic learning, and a healthy lifestyle an an active school. The main concern ist to rhythmisize everyday school life by incorporating exercise and play to promote health, well-being and learning for children. This is all the more important, considering how much time pupils spent in all-day schools (Abeling und Städtler, 2008). Source

Maphangwa K.W.,South African National Biodiversity Institute | Musil C.F.,South African National Biodiversity Institute | Raitt L.,University of the Western Cape | Zedda L.,Universitatsstrasse 30
Oecologia | Year: 2012

Elevated temperatures and diminished precipitation amounts accompanying climate warming in arid ecosystems are expected to have adverse effects on the photosynthesis of lichen species sensitive to elevated temperature and/or water limitation. This premise was tested by artificially elevating temperatures (increase 2.1-3.8°C) and reducing the amounts of fog and dew precipitation (decrease 30.1-31.9%), in an approximation of future climate warming scenarios, using transparent hexagonal open-top warming chambers placed around natural populations of four lichen species (Xanthoparmelia austroafricana, X. hyporhytida, Xanthoparmelia. sp., Xanthomaculina hottentotta) at a dry inland site and two lichen species (Teloschistes capensis and Ramalina sp.) at a humid coastal site in the arid South African Succulent Karoo Biome. Effective photosynthetic quantum yields (ΔF/F′ m) were measured hourly throughout the day at monthly intervals in pre-hydrated lichens present in the open-top warming chambers and in controls which comprised demarcated plots of equivalent open-top warming chamber dimensions constructed from 5-cm-diameter mesh steel fencing. The cumulative effects of the elevated temperatures and diminished precipitation amounts in the open-top warming chambers resulted in significant decreases in lichen (ΔF/F′ m). The decreases were more pronounced in lichens from the dry inland site (decline 34.1-46.1%) than in those from the humid coastal site (decline 11.3-13.7%), most frequent and prominent in lichens at both sites during the dry summer season, and generally of greatest magnitude at or after the solar noon in all seasons. Based on these results, we conclude that climate warming interacting with reduced precipitation will negatively affect carbon balances in endemic lichens by increasing desiccation damage and reducing photosynthetic activity time, leading to increased incidences of mortality. © 2011 Springer-Verlag. Source

Dotterl M.,Universitatsstrasse 30 | Alt H.G.,Universitatsstrasse 30
Catalysis Communications | Year: 2012

In the presence of molecular oxygen, [BMIM] +[Al 2Cl 7] - (BMIM = 1-butyl-3-methylimidazolium) ionic liquids catalyzed coupling reactions of cyclohexane and methylcyclohexane to give dimers and trimers. Further, conversions and reaction rates of n-heptane cracking and disproportionation reactions were strongly enhanced if an atmosphere of dry air was applied instead of an inert gas. © 2011 Elsevier B.V. All rights reserved. Source

Bolognesi M.,University of Rennes 1 | Lonne M.,Universitatsstrasse 30
Selecta Mathematica, New Series | Year: 2016

In this paper, we study the topology of the stack $$\mathcal {T}_g$$Tg of smooth trigonal curves of genus g over the complex field. We make use of a construction by the first named author and Vistoli, which describes $$\mathcal {T}_g$$Tg as a quotient stack of the complement of the discriminant. This allows us to use techniques developed by the second named author to give presentations of the orbifold fundamental group of $$\mathcal {T}_g$$Tg, and of its substrata with prescribed Maroni invariant, and describe their relation with the mapping class group $$\mathcal {M}ap_g$$Mapg of Riemann surfaces of genus g. © 2015, Springer Basel. Source

Michlik S.,Universitatsstrasse 30 | Kempe R.,Universitatsstrasse 30
Chemistry - A European Journal | Year: 2010

The synthesis of eight new iridium complexes containing anionic P,N ligands is described. These complexes have been investigated as catalysts for amine alkylation reactions, resulting in a highly active catalyst for the selective monoalkylation of anilines with primary alcohols, under mild reaction conditions. Nearly quantitative conversion was observed at 70 °C with a catalyst loading as low as 0.05 mol % iridium. Selective amine alkylation: The synthesis of eight new iridium complexes containing anionic P,N ligands (see image) is described. These new complexes were used as highly active catalysts for the selective monoalkylation of anilines with primary alcohols, and gave nearly quantitative conversion under mild reaction conditions. © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Source

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