@article{64000, abstract = {{Surface enhanced solid-state NMR by dynamic nuclear polarization (DNP SENS) enables the characterization of the inner-pore surface functionalization of porous etched ion-track membranes exhibiting low specific surface areas compared to typical SBA- or MCM-type mesoporous silica materials. The membranes were conformally coated with a 5 nm thin SiO2 layer by atomic layer deposition. This layer was subsequently modified by aminopropyl silane linkers that allow further functionalization via the terminal amine group. The results evidence that in principle DNP SENS is a capable tool to analyze more complex porous systems, e.g. bioinspired functional etched ion-track membranes down to the molecular level. These results are relevant also for single nanopore systems, for which a direct analysis of the channel surface functionalization is not feasible by classical characterization methods. The applicability of DNP SENS to complex porous systems requires the optimization of the sample preparation and measurement parameters.}}, author = {{Kumari, B. and John, D. and Hoffmann, P. and Spende, A. and Toimil-Molares, M. E. and Trautmann, C. and Hess, C. and Ruff, P. and Schulze, M. and Stark, R. and Buntkowsky, G. and Andrieu-Brunsen, A. and Gutmann, Torsten}}, issn = {{0942-9352}}, journal = {{Zeitschrift Fur Physikalische Chemie-International Journal of Research in Physical Chemistry & Chemical Physics}}, number = {{7-8}}, pages = {{1173–1186}}, title = {{{Surface Enhanced DNP Assisted Solid-State NMR of Functionatized SiO2 Coated Potycarbonate Membranes}}}, doi = {{10.1515/zpch-2017-1032}}, volume = {{232}}, year = {{2018}}, } @article{63924, abstract = {{In a systematic study on the synthesis of aluminophosphates (AlPOs) under ionothermal conditions, initially using 1-butyl-3-methylimidazolium bromide ([C4mim]Br) as ionic liquid solvent and structure-directing agent, the effect of the reaction conditions (i.e. molar P/Al, F/Al and ionic liquid/Al ratios, alternative fluoride sources, influence of the ionic liquid’s cation or anion, temperature, reaction time) on the framework type was studied in detail. In [C4mim]Br, the formation of the more thermodynamically stable AEL framework type proceeds via AFI. The framework type can be changed by choosing another anion or cation of the ionic liquid. Hence, the successful ionothermal synthesis of the AFI framework AlPO is reported by using either N-ethylpyridinium bromide ([C2py]Br) or 1-butyl-3-methylimidazolium chloride ([C4mim]Cl). The mineraliser [Me4N]F, rather than HF, has been used for the first time as an alternative fluoride source in ionothermal synthesis, which can also affect the framework type. Hence, a very efficient synthesis of the LTA framework type is reported in [C4mim]Br using [Me4N]F. Ab initio molecular dynamics (AIMD) studies showed that the anion bridges between the aluminium atoms of the framework and the cation. The interaction is more favoured in the presence of the bromide than the chloride, which may be a clue to the question why the AEL framework is not formed in the chloride-based ionic liquid. This study opens several routes to pursue in the future as numerous ionic liquids are available which can be used in ionothermal synthesis.}}, author = {{Azim, Muhammad Mohsin and Pensado, Alfonso and Kirchner, Barbara and Gutmann, Torsten and Groszewicz, Pedro B. and Buntkowsky, Gerd and Stark, Annegret}}, journal = {{Microporous and Mesoporous Materials}}, keywords = {{Aluminophosphates, Ionic liquids, Ionothermal synthesis, Microporous materials, Zeolite analogous}}, pages = {{204–213}}, title = {{{Ionothermal synthesis of crystalline microporous aluminophosphates: Systematic study on the conditions affecting the framework type}}}, doi = {{10.1016/j.micromeso.2018.02.053}}, volume = {{266}}, year = {{2018}}, } @article{64278, author = {{Flensted-Jensen, Mogens and Kuit, Job J.}}, issn = {{0019-3577}}, journal = {{Indagationes Mathematicae}}, number = {{5}}, pages = {{1235--1258}}, publisher = {{Elsevier BV}}, title = {{{Cuspidal integrals for SL(3)/Ke}}}, doi = {{10.1016/j.indag.2018.05.005}}, volume = {{29}}, year = {{2018}}, } @inbook{51085, author = {{Klingmann, Heinrich}}, booktitle = {{Ensemblespiel und Klassenmusizieren in Schule und Musikschule. Ein Handbuch für die Praxis.}}, editor = {{Kraemer, Rudolf-Dieter and Rüdiger, Wolfgang}}, isbn = {{978-3-95786-186-3}}, pages = {{413--450}}, publisher = {{Wißner-Verlag}}, title = {{{Lateinamerikanische Perkussionsinstrumente im Unterricht.}}}, volume = {{41}}, year = {{2018}}, } @inproceedings{64371, author = {{Hofmann, Martin R. and Lenz, Marcel and Krug, Robin and Gerhardt, Nils Christopher and Schmieder, Kirsten and Dillmann, Christopher and Welp, Hubert}}, booktitle = {{Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXII}}, title = {{{Brain tissue analysis using texture features based on optical coherence tomography images}}}, doi = {{10.1117/12.2292032}}, year = {{2018}}, } @inproceedings{64372, author = {{Lenz, Marcel and Krug, Robin and Gerhardt, Nils Christopher and Schmieder, Kirsten and Hofmann, Martin R. and Dillmann, Christopher and Welp, Hubert}}, booktitle = {{Optics, Photonics, and Digital Technologies for Imaging Applications V}}, title = {{{Classification of brain tissue with optical coherence tomography by employing texture analysis}}}, doi = {{10.1117/12.2307701}}, year = {{2018}}, } @inproceedings{64376, author = {{Hofmann, Martin R. and Gerhardt, Nils Christopher and Finkeldey, Markus and Göring, Lena}}, booktitle = {{Practical Holography XXXII: Displays, Materials, and Applications}}, title = {{{Digital holography for the investigation of buried structures with a common-path reflection microscope}}}, doi = {{10.1117/12.2289524}}, year = {{2018}}, } @inproceedings{64379, author = {{Lindemann, Markus and Gerhardt, Nils Christopher and Hofmann, Martin R. and Pusch, Tobias and Michalzik, Rainer and Scherübl, Sebastian}}, booktitle = {{Semiconductor Lasers and Laser Dynamics VIII}}, title = {{{Thermally-induced birefringence in VCSELs - approaching the limits}}}, doi = {{10.1117/12.2306215}}, year = {{2018}}, } @inproceedings{64375, author = {{Lindemann, Markus and Gerhardt, Nils Christopher and Hofmann, Martin and Pusch, Tobias and Michalzik, Rainer}}, booktitle = {{Vertical-Cavity Surface-Emitting Lasers XXII}}, title = {{{Demonstrating ultrafast polarization dynamics in spin-VCSELs}}}, doi = {{10.1117/12.2289560}}, year = {{2018}}, } @inproceedings{64378, author = {{Lindemann, Markus and Gerhardt, Nils Christopher and Hofmann, Martin R. and Michalzik, Rainer and Pusch, Tobias}}, booktitle = {{Semiconductor Lasers and Laser Dynamics VIII}}, title = {{{Spin lasers for optical data communication}}}, doi = {{10.1117/12.2306464}}, year = {{2018}}, } @inproceedings{64377, author = {{Lindemann, Markus and Gerhardt, Nils Christopher and Hofmann, Martin R. and Michalzik, Rainer and Pusch, Tobias}}, booktitle = {{Vertical-Cavity Surface-Emitting Lasers XXII}}, title = {{{Electrical birefringence tuning of VCSELs}}}, doi = {{10.1117/12.2295917}}, year = {{2018}}, } @inproceedings{64374, author = {{Gerhardt, Nils Christopher and Neutsch, Krisztian and Göring, Lena}}, booktitle = {{Nanoimaging and Nanospectroscopy VI}}, title = {{{Common-path digital holographic microscopy for 3D nanoparticle localization}}}, doi = {{10.1117/12.2321175}}, year = {{2018}}, } @inproceedings{64380, author = {{Gerhardt, Nils Christopher and Xu, Gaofeng and Žutić, Igor}}, booktitle = {{APS March Meeting 2018}}, title = {{{Toward ultrafast spin lasers?}}}, year = {{2018}}, } @article{64370, author = {{Lenz, Marcel and Krug, Robin and Gerhardt, Nils Christopher and Schmieder, Kirsten and Dillmann, Christopher and Stroop, Ralf and Welp, H.}}, journal = {{Journal of biomedical optics}}, number = {{7}}, pages = {{071205}}, title = {{{Automated differentiation between meningioma and healthy brain tissue based on optical coherence tomography ex vivo images using texture features}}}, doi = {{10.1117/1.jbo.23.7.071205}}, volume = {{23}}, year = {{2018}}, } @inproceedings{64369, author = {{Besaga, Vira and Gerhardt, Nils Christopher and Hofmann, Martin R. and Maksimyak, Peter P.}}, booktitle = {{Thirteenth International Conference on Correlation Optics}}, title = {{{A direct-view customer-oriented digital holographic camera}}}, doi = {{10.1117/12.2304923}}, year = {{2018}}, } @inbook{64633, author = {{Glöckner, Helge}}, booktitle = {{New directions in locally compact groups}}, isbn = {{978-1-108-41312-1; 978-1-108-33267-5}}, keywords = {{22E50, 22E20, 22D05, 22E35, 26E30, 37D10}}, pages = {{37–72}}, publisher = {{Cambridge: Cambridge University Press}}, title = {{{Lectures on Lie groups over local fields}}}, doi = {{10.1017/9781108332675.005}}, year = {{2018}}, } @inbook{64632, author = {{Glöckner, Helge}}, booktitle = {{2016 MATRIX annals}}, isbn = {{978-3-319-72298-6; 978-3-319-72299-3}}, keywords = {{22D05, 20G25, 22E40}}, pages = {{101–165}}, publisher = {{Cham: Springer}}, title = {{{Endomorphisms of Lie groups over local fields}}}, doi = {{10.1007/978-3-319-72299-3_6}}, year = {{2018}}, } @inproceedings{60788, author = {{Nettekoven, C and Jonas, Kristina and Lichtenstein, T and Grefkes, C and Goldbrunner, R and Weiss Lucas, C.}}, number = {{8}}, pages = {{e57}}, title = {{{PB 87. Comparison of three different fMRI paradigms for language mapping}}}, doi = {{https://doi.org/10.1016/j.clinph.2018.04.632 }}, volume = {{129}}, year = {{2018}}, } @inproceedings{15952, abstract = {{Arbitrary sampling rate conversion has already received considerable attention in the past, but still lacks an equivalent representation of the effective time-dilation process in the block frequency domain. Good sampling rate converters in the time domain have been known, for instance, in terms of time-varying 'Sinc' or fixed 'Farrow' polynomial filters. The former can deliver nearly exact conversion at high complexity, while the latter has pronounced computational efficiency with limited accuracy. Only recently, it was shown that a composite 'polyphase Farrow' form with high resampling precision can be implemented with quasi-fixed filters that operate at the input sampling rate. We therefore propose to capitalize from that fixed-filter architecture in that we translate the polyphase-Farrow filters into an equivalent FFT-based overlap-save form. Experimental evaluation and comparison with other state-of-the art frequency-domain approaches then proves currently the best price-performance ratio of the proposed algorithm. It is thus an ideal candidate for the new framework of acoustic sensor networks that critically rests upon fast and accurate alignment of autonomous sampling processes.}}, author = {{Schmalenstroeer, Joerg and Chinaev, Aleksej and Enzner, Gerald}}, booktitle = {{Speech Communication; 13th ITG-Symposium}}, issn = {{null}}, pages = {{1--5}}, title = {{{Fast and Accurate Audio Resampling for Acoustic Sensor Networks by Polyphase-Farrow Filters with FFT Realization}}}, year = {{2018}}, } @inproceedings{24926, author = {{Mertens, Ulrich J. and Bergmann, Kirsten and Tolksdorf, Nils Frederik and Rohlfing, Katharina J.}}, location = {{Cape Town, South Africa}}, title = {{{Can the reduction of an iconic gesture aid long-term learning? A pilot child-robot-study}}}, year = {{2018}}, }