Institution
Leibniz University of Hanover
Education•Hanover, Niedersachsen, Germany•
About: Leibniz University of Hanover is a education organization based out in Hanover, Niedersachsen, Germany. It is known for research contribution in the topics: Finite element method & Computer science. The organization has 14283 authors who have published 29845 publications receiving 682152 citations.
Papers published on a yearly basis
Papers
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TL;DR: A post-synthetic functionalization method is reported to obtain a highly permselective zeolitic imidazolate framework (ZIF-90) membrane to enhance the separation selectivity while a high permeance is maintained.
Abstract: A clear separation: A post-synthetic functionalization method is reported to obtain a highly permselective zeolitic imidazolate framework (ZIF-90) membrane. The intercrystalline defects of the ZIF-90 membrane are minimized to enhance the separation selectivity while a high permeance is maintained.
176 citations
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TL;DR: In this paper, both polycrystals of calcia-stabilized zirconia (CSY) and single crystals of yttria -stabilised zirminia (YSZ) at 500°C were used to prevent access of molecular oxygen from the gas phase and realize a virtually two-dimensional geometry for the reacting crystal.
176 citations
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TL;DR: Research on the biochemistry, physiology and ecology of ammonia oxidisers is reviewed and the ways in which this knowledge, coupled with improved methods for characterising communities, might lead to improved fertiliser use efficiency and mitigation of N2 O emissions are discussed.
Abstract: Oxidation of ammonia to nitrite by bacteria and archaea is responsible for global emissions of nitrous oxide directly and indirectly through provision of nitrite and, after further oxidation, nitrate to denitrifiers. Their contributions to increasing N2 O emissions are greatest in terrestrial environments, due to the dramatic and continuing increases in use of ammonia-based fertilizers, which have been driven by requirement for increased food production, but which also provide a source of energy for ammonia oxidizers (AO), leading to an imbalance in the terrestrial nitrogen cycle. Direct N2 O production by AO results from several metabolic processes, sometimes combined with abiotic reactions. Physiological characteristics, including mechanisms for N2 O production, vary within and between ammonia-oxidizing archaea (AOA) and bacteria (AOB) and comammox bacteria and N2 O yield of AOB is higher than in the other two groups. There is also strong evidence for niche differentiation between AOA and AOB with respect to environmental conditions in natural and engineered environments. In particular, AOA are favored by low soil pH and AOA and AOB are, respectively, favored by low rates of ammonium supply, equivalent to application of slow-release fertilizer, or high rates of supply, equivalent to addition of high concentrations of inorganic ammonium or urea. These differences between AOA and AOB provide the potential for better fertilization strategies that could both increase fertilizer use efficiency and reduce N2 O emissions from agricultural soils. This article reviews research on the biochemistry, physiology and ecology of AO and discusses the consequences for AO communities subjected to different agricultural practices and the ways in which this knowledge, coupled with improved methods for characterizing communities, might lead to improved fertilizer use efficiency and mitigation of N2 O emissions.
176 citations
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TL;DR: In this paper, the authors apply an extended sender-receiver model to find evidence that observing entrepreneurs reduces fear of failure in others in environments where approval of entrepreneurship is high, while this effect is significantly weaker in low-approval environments.
Abstract: Studies on the influence of entrepreneurial role models (peers) on the decision to start a firm argue that entrepreneurial role models in the local environment (1) provide opportunities to learn about entrepreneurial tasks and capabilities, and (2) signal that entrepreneurship is a favorable career option thereby reducing uncertainty that potential entrepreneurs face. However, these studies remain silent about the role of institutional context for these mechanisms. Applying an extended sender–receiver model, we hypothesize that observing entrepreneurs reduces fear of failure in others in environments where approval of entrepreneurship is high, while this effect is significantly weaker in low-approval environments. Taking advantage of the natural experiment from recent German history and using data from the Global Entrepreneurship Monitor Project, we find considerable support for our hypotheses.
175 citations
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TL;DR: In this paper, the level of different heavy metals (Hg, Cd, Pb) was studied in the producers (food plants) and consumers [four species of acridid grasshoppers: Calliptamus italicus (L), Oedipoda caerulesens (L.), O. germanica (Latr.) and Chorthippus(Glyptobothrus) crassiceps(Ramme, 1926)] of a grassland located 1200m above the sea level in the Taigetos Mountains, Peloponnesus,
175 citations
Authors
Showing all 14621 results
Name | H-index | Papers | Citations |
---|---|---|---|
Hyun-Chul Kim | 176 | 4076 | 183227 |
Peter Zoller | 134 | 734 | 76093 |
J. R. Smith | 134 | 1335 | 107641 |
Chao Zhang | 127 | 3119 | 84711 |
Benjamin William Allen | 124 | 807 | 87750 |
J. F. J. van den Brand | 123 | 777 | 93070 |
J. H. Hough | 117 | 904 | 89697 |
Hans-Peter Seidel | 112 | 1213 | 51080 |
Karsten Danzmann | 112 | 754 | 80032 |
Bruce D. Hammock | 111 | 1409 | 57401 |
Benno Willke | 109 | 508 | 74673 |
Roman Schnabel | 108 | 589 | 71938 |
Jan Harms | 108 | 447 | 76132 |
Hartmut Grote | 108 | 434 | 72781 |
Ik Siong Heng | 107 | 423 | 71830 |