359 research outputs found
Ways to Spin Resolved Core Hole Clock Measurements
No full textFeulner P, Blobner F, Bauer J, et al. Ways to spin resolved core-hole-clock measurements. e-J. Surf. Sci. Nanotech. 2015;13:317-323
Recommendations on the development, use and provision of Research Software
No full textThese recommendations describe challenges relating to research software and provide recommendations for the development, use and provision of this type of software. The relevance of research software to modern research should be clearly underlined, especially in the context of political debate on digital transformation in the sciences and humanities.
This document was prepared by the Research Software Working Group, established in 2016, within the Alliance initiative.
The members of the working group are (in alphabetical order): Mathias Bornschein, Prof. Dr. Björn Brembs, Dr. Michael Erben-Russ, Dr. Georg Feulner, Dr. Konrad Förstner, Michael Franke, Dr. Bernadette Fritzsch, Dr. Jürgen Fuhrmann, Prof. Dr. Michael Goedicke, Stephan Janosch, Dr. Matthias Katerbow, Dr. Uwe Konrad, Dennis Zielke.</p
Electrophysiological and molecular genetic evidence for sympatrically occuring cryptic species in African weakly electric fishes (Teleostei : Mormyridae : Campylomormyrus)
No full textFor two sympatric species of African weakly electric fish, Campylomormyrus tamandua and Campylomormyrus numenius, we monitored ontogenetic differentiation in electric organ discharge (EOD) and established a molecular phylogeny, based on 2222 bp from cytochrome b, the S7 ribosomal protein gene, and four flanking regions of unlinked microsatellite loci. In C tamandua, there is one common EOD type, regardless of age and sex, whereas in C numenius we were able to identify three different male adult EOD waveform types, which emerged from a single common EOD observed in juveniles. Two of these EOD types formed well supported clades in our phylogenetic analysis. In an independent line of evidence, we were able to affirm the classification into three groups by microsatellite data. The correct assignment and the high pairwise FST values support our hypothesis that these groups are reproductively isolated. We propose that in C numenius there are cryptic species, hidden behind similar and, at least as juveniles, identical morphs. (c) 2005 Elsevier Inc. All rights reserved
Adaptive radiation in African weakly electric fish (Teleostei : Mormyridae : Campylomormyrus): a combined molecular and morphological approach
No full textWe combined multiple molecular markers and geometric morphometrics to revise the current taxonomy and to build a phylogenetic hypothesis for the African weakly electric fish genus Campylomormyrus. Genetic data (2039 bp DNA sequence of mitochondrial cytochrome b and nuclear S7 genes) on 106 specimens support the existence of at least six species occurring in sympatry. We were able to further confirm these species by microsatellite analysis at 16 unlinked nuclear loci and landmark-based morphometrics. We assigned them to nominal taxa by comparisons to type specimens of all Campylomormyrus species recognized so far. Additionally, we showed that the shape of the elongated trunk-like snout is the major source of morphological differentiation among them. This finding suggests that the radiation of this speciose genus might have been driven by adaptation to different food sources
Supplemental Material for Feulner et al., 2018
No full textTable S1: List of genes overlapping the mapping interval on Pun-LG10 (Ore-LG23). Gene position as annotated in Pundamilia(v2.0) annotation file based on NCBI annotations using Uni-Prot
Inner valence excitations of condensed neon
No full textApplying two-dimensional electron spectroscopy, we investigate bound and continuum excitations of neon
films condensed onto clean metal surfaces, in the energy range of the [Ne 2s] singly and [Ne 2p²
] doubly excited
states. Precise energy values of excitons and ionization potentials are obtained for the surface and for the bulk,
and compared to data for the isolated neon atom. In addition, valuable information on the mobility and the decay
of excitons in this energy range is accessible with our technique.We thank D. Menzel for fruitful discussions, and
P. Averkamp and the staff of BESSY for help during the
experiments. Support by the Helmholtz Zentrum Berlin is
gratefully acknowledged
Inner valence excitations of condensed neon
No full textApplying two-dimensional electron spectroscopy, we investigate bound and continuum excitations of neon
films condensed onto clean metal surfaces, in the energy range of the [Ne 2s] singly and [Ne 2p²
] doubly excited
states. Precise energy values of excitons and ionization potentials are obtained for the surface and for the bulk,
and compared to data for the isolated neon atom. In addition, valuable information on the mobility and the decay
of excitons in this energy range is accessible with our technique.We thank D. Menzel for fruitful discussions, and
P. Averkamp and the staff of BESSY for help during the
experiments. Support by the Helmholtz Zentrum Berlin is
gratefully acknowledged
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