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2018-02-19
23:06
[PUBDB-2018-01252] Journal Article
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Revealing the Structure and Mechanism of Palladium during Direct Synthesis of Hydrogen Peroxide in Continuous Flow Using Operando Spectroscopy
ddc:540
The direct synthesis of $H_{2}O_2$ is a dream reaction in the field of selective oxidation and green chemical synthesis. However, the unknown active state of the catalyst and the lack of a defined catalytic mechanism preclude the design and optimization of suitable catalysts and reactor setups [...]
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2018-02-15
16:01
OpenAccess [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
We present two complementary approaches to investigate the In content in GaAs/(In,Ga)As/(GaAs) core-shell-(shell) nanowire (NW) heterostructures using synchrotron radiation. The key advantage of our methodology is that NWs are characterized in their as-grown configuration, i.e., perpendicularly standing on a substrate [...]
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2018-02-15
09:33
[PUBDB-2018-01190] Conference Presentation
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New Perspectives in Multi-Component Hydrides
European Materials Research Society Fall Meeting Symposium O: Functional Hydride Materials, Meeting locationWarsaw, Poland, 19 Sep 2016 - 23 Sep 20162016-09-192016-09-23
Hydrogen technology can be incorporated into intermittent renewable energy systems to realise a complete clean, green energy harvesting and storage cycle. An efficient hydrogen storage system based on solid state hydrogen requires optimised material properties for each particular application. [...]

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2018-02-14
12:21
[PUBDB-2018-01179] Journal Article
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Structural characterization of 14-3-3ζ in complex with the human Son of sevenless homolog 1 (SOS1)
ddc:540
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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
OpenAccess [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
Endolysins are peptidoglycan-degrading enzymes utilized by bacteriophages to release the progeny from bacterial cells. The lytic properties of phage endolysins make them potential antibacterial agents for medical and industrial applications [...]
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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
11:23
OpenAccess [PUBDB-2018-01134] Journal Article/Contribution to a conference proceedings/Contribution to a book
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Layout and first results of the nanotomography endstation at the P05 beamline at PETRA III
XRM 2014: Proceedings of the 12th International Conference on X-Ray Microscopy
Proceedings of the 12th International Conference on X-Ray Microscopy, XRM 2014, Meeting locationMelburn, Australia, 26 Oct 2014 - 31 Oct 20142014-10-262014-10-31
AIP conference proceedings 1696, 020008 (2016) [10.1063/1.4937502]  GO
ddc:530
The Helmholtz-Zentrum Geesthacht operates the P05 Imaging Beamline at the DESY storage ring PETRA III. This beamline is dedicated to micro- and nanotomography with two endstations [...]
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