Publications database

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2018-10-19
09:17
OpenAccess [PUBDB-2018-03848] Book/Report/Dissertation / PhD Thesis
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Structure of complex fluids under shear flows
[DESY-THESIS-2018-028]
Hamburg : Verlag Deutsches Elektronen-Synchrotron, DESY THESIS 137 pp. () [10.3204/PUBDB-2018-03848] = Dissertation, Universität Hamburg, 2018  GO
With the recent developments of modern synchrotron and X-ray Free Electron Laser (XFEL) light sources high speed and micrometer sized liquid jets have become one of the most important sample delivery systems. For that reason it is highly important to develop liquid jet devices compatible with micrometer X-ray beams, which are optimized for the investigation of nanostructures and the behavior of complex liquids behavior under flow.This thesis reports a detailed X-ray scattering study of a liquid jet produced by a gas dynamic virtual nozzle (GDVN) system. [...]
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2018-10-18
12:42
OpenAccess [PUBDB-2018-03832] Preprint/Report
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Longitudinal double-spin asymmetries in semi-inclusive deep-inelastic scattering of electrons and positrons by protons and deuterons
[DESY-18-181; arXiv:1810.07054]
 GO
A comprehensive collection of results on longitudinal double-spin asymmetries is presented for charged pions and kaons produced in semi-inclusive deep-inelastic scattering of electrons and positrons on the proton and deuteron, based on the full HERMES data set. The dependence of the asymmetries on hadron transverse momentum and azimuthal angle extends the sensitivity to the flavor structure of the nucleon beyond the distribution functions accessible in the collinear framework. [...]
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2018-10-16
08:28
[DEFAULT-2018-00001] Award

Bernhard-von-Cotta-Preis
Germany : Verein der Freunde und Förderer der TU Bergakademie Freiberg ()

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2018-10-16
02:12
[PUBDB-2018-03802] Journal Article
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Magnetron-sputtered copper nanoparticles: lost in gas aggregation and found by in situ X-ray scattering
Nanoscale 10(38), 18275 - 18281 () [10.1039/C8NR06155F]  GO
Magnetron discharge in a cold buffer gas represents a liquid-free approach to the synthesis of metal nanoparticles (NPs) with tailored structure, chemical composition and size. Despite a large number of metal NPs that were successfully produced by this method, the knowledge of the mechanisms of their nucleation and growth in the discharge is still limited, mainly because of the lack of in situ experimental data. [...]
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ddc:600
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2018-10-15
17:08
[PUBDB-2018-03801] Journal Article
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Specifics of $\mathrm{C_{60}}$ Fullerene Cluster Formation in a Solvent Mixture of Toluene and N-Methyl-2-Pyrollidone
The two-level organization of $\mathrm{C_{60}}$ fullerene clusters in solutions of $\mathrm{C_{60}}$ in pure toluene and toluene/N-methyl-2-pyrrolidone solvent mixtures is studied by small-angle X-ray scattering (SAXS). The SAXS data for freshly prepared solutions are compared with the data obtained by dynamic light scattering, a technique we use to assess the temporal stability of the prepared solutions [...]
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ddc:540
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2018-10-15
15:47
[PUBDB-2018-03800] Journal Article
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On avoiding negative electron density in Gram-Charlier refinements of anharmonic motion: the example of glutathione
The structure of glutathione, γ-l-Glutamyl-l-cysteinyl-glycine (C$_{10}$H$_{17}$N$_3$O$_6$S), was studied by multi-temperature single-crystal X-ray diffraction. Residual density maps from conventional independent atom model refinement gave indication of anharmonic motion in the molecule [...]
ddc:540
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2018-10-15
15:39
[PUBDB-2018-03799] Journal Article
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Role of Steric Hindrance in the Crystal Packing of Z ′ = 4 Superstructure of Trimethyltin Hydroxide
Crystal growth & design 18(3), 1394 - 1400 () [10.1021/acs.cgd.7b01295]  GO
The room-temperature crystal structure of trimethyltin hydroxide, (CH$_3$)$_3$SnOH, has been described by Anderson et al. [Cryst [...]
ddc:540
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2018-10-15
15:25
[PUBDB-2018-03797] Journal Article
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Approaching Ferrite-Based Exchange-Coupled Nanocomposites as Permanent Magnets
During the past decade, CoFe$_{2}$O$_4$ (hard)/Co–Fe alloy (soft) magnetic nanocomposites have been routinely prepared by partial reduction of CoFe$_{2}$O$_4$ nanoparticles. Monoxide (i.e., FeO or CoO) has often been detected as a byproduct of the reduction, although it remains unclear whether the formation of this phase occurs during the reduction itself or at a later stage [...]
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ddc:540
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2018-10-15
10:23
OpenAccess [PUBDB-2018-03786] Journal Article/Contribution to a conference proceedings/Contribution to a book
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In Situ Mechanical Behavior of Regenerating Rat Calvaria Bones Under Tensile Load via Synchrotron Diffraction Characterization
Residual Stresses 2018, ECRS10, LeuvenLeuven, Belgium, 11 Sep 2018 - 14 Sep 20182018-09-112018-09-14 Materials research proceedings 6, 117 - 122 () [10.21741/9781945291890-19]  GO
The major challenge of Research in bone surgery is to develop strategies to repair large bone defects. Bone grafting technique is the gold standard to fill and heal these kind of defects. [...]
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ddc:620
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2018-10-14
14:42
OpenAccess [PUBDB-2018-03783] Journal Article
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Photoionization of metastable heliumlike $C^{4+}$($1s\,2s\; ^3S_ 1)$ ions: Precision study of intermediate doubly excited states
In a joint experimental and theoretical endeavor, photoionization of metastable $C^{4+}$($1s\,2s\; ^3S_ 1)$ ions via intermediate levels with hollow, double-K-vacancy configurations $2s2p, 2s3p, 2p3s, 2p3d, 2s4p, 2p4s$, and $2p4d$ has been investigated. High-resolution photon-ion merged-beams measurements were carried out with the resolving power reaching up to 25 800 which is sufficient to separate the leading fine-structure components of the $2s2p^{3}P$ term. [...]
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ddc:530
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