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2018-02-15
16:01
[PUBDB-2018-01217] Journal Article
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Determination of indium content of GaAs/(In,Ga)As/(GaAs) core-shell(-shell) nanowires by x-ray diffraction and nano x-ray fluorescence
ddc:530
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2018-02-14
12:20
[PUBDB-2018-01178] Journal Article
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Selective utilization of benzimidazolyl-norcobamides as cofactors by the tetrachloroethene reductive dehalogenase of Sulfurospirillum multivorans
ddc:570
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2018-02-14
12:18
DBCoverage [PUBDB-2018-01177] Journal Article
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Modular endolysin of Burkholderia AP3 phage has the largest lysozyme-like catalytic subunit discovered to date and no catalytic aspartate residue
ddc:000
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2018-02-12
10:33
[PUBDB-2018-01151] Journal Article
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Creep deformation of Co-Re-Ta-C alloys with varying C content – investigated in-situ by simultaneous synchrotron radiation diffraction
ddc:600
The creep deformation of precipitation hardened Co-Re-Ta-C alloys is investigated during in-situ synchrotron diffraction experiment at 1373 K. At room temperature, the alloys have a structure consisting of ϵϵ-Co (hcp) and metastably retained γγ-Co (fcc) and are strengthened by precipitates of the mono-carbide of Ta, which are finely dispersed in the alloy matrix. [...]

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2018-02-10
11:20
[PUBDB-2018-01146] Report/Journal Article
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An in situ investigation of the deformation mechanisms in a β-quenched Ti-5Al-5V-5Mo-3Cr alloy
[I-20150533 EC] ddc:600
The sequence of activation of deformation mechanisms in a near-β Ti-5Al-5Mo-5V-3Cr alloy quenched from the β-field is investigated as a function of strain during uniaxial compression at 0.001 s−1 up to ε = 0.041. Bulk in situ high energy synchrotron X-ray diffraction is applied to follow continuously the evolution of the microstructure of the alloy during deformation and is complemented with metallographic analysis. [...]
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2018-02-08
13:51
OpenAccess [PUBDB-2018-01139] Journal Article
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Quantized Self-Assembly of Discotic Rings in a Liquid Crystal Confined in Nanopores
ddc:550
Disklike molecules with aromatic cores spontaneously stack up in linear columns with high, one-dimensional charge carrier mobilities along the columnar axes, making them prominent model systems for functional, self-organized matter. We show by high-resolution optical birefringence and synchrotron-based x-ray diffraction that confining a thermotropic discotic liquid crystal in cylindrical nanopores induces a quantized formation of annular layers consisting of concentric circular bent columns, unknown in the bulk state. [...]
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2018-02-08
11:10
OpenAccess [PUBDB-2018-01133] Journal Article/Contribution to a conference proceedings
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X-ray Full Field Microscopy at 30 keV
22nd International Congress on X-Ray Optics and Microanalysis, Meeting locationHamburg, Germany, 2 Sep 2016 - 6 Sep 20162016-09-022016-09-06 Journal of physics / Conference Series 499, 012007 (2014) [10.1088/1742-6596/499/1/012007]  GO
ddc:530
In our X-ray full field microscopy experiments, we demonstrated a resolution better than 260 nm over the entire field of view of 80 μm x 80 μm at 30 keV. Our experimental setup at PETRA III, P05, had a length of about 5 m consisting of an illumination optics, an imaging lens and a detector [...]
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2018-02-08
11:04
[PUBDB-2018-01131] Journal Article
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Strain-dependent fractional molecular diffusion in humid spider silk fibres
Interface 13(122), 20160506 - (2016) [10.1098/rsif.2016.0506]  GO
ddc:500
Spider silk is a material well known for its outstanding mechanical properties, combining elasticity and tensile strength. The molecular mobility within the silk's polymer structure on the nanometre length scale importantly contributes to these macroscopic properties. [...]
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2018-02-08
10:48
[PUBDB-2018-01128] Journal Article
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Single and double grating-based X-ray microtomography using synchrotron radiation
ddc:530
Hard X-ray phase contrast imaging techniques have become most suitable for the non-destructive three-dimensional visualization of soft tissues at the microscopic level. Among the hard X-ray grating interferometry methods, a single-grating approach (XSGI) has been implemented by simplifying the established double-grating interferometer (XDGI). [...]
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2018-02-08
09:42
DBCoverage [PUBDB-2018-01124] Journal Article
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Nanotomography endstation at the P05 beamline: Status and perspectives
ddc:530
The Imaging Beamline IBL/P05 at the DESY storage ring PETRA III, operated by the Helmholtz-Zentrum Geesthacht, has two dedicated endstations optimized for micro- and nanotomography experiments [1-3]. Here we present the status of the nanotomography endstation, highlight the latest instrumentation upgrades and present first experimental results. [...]
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