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2017-06-20
13:38
[PUBDB-2017-05557] Journal Article
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Design and control of microstructure and texture by thermomechanical processing of a multi-phase TiAl alloy
ddc:600
Sheets made of intermetallic γ-TiAl based alloys possess promising engineering properties for lightweight hightemperatureapplications. Due to the complexity of their manufacturing, however, they are still not fullycommercialised. [...]
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2017-06-20
10:08
[PUBDB-2017-05480] Journal Article
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Transition and Alkali Metal Complex Ternary Amides for Ammonia Synthesis and Decomposition
ddc:540
A new complex ternary amide Rb2[Mn(NH2)4], whichsimultaneously contains both transition and alkali metal catalyticsites, is developed. This is in line with the recently reported TMLiHcomposite catalysts, which have been shown to effectivelybreak the scaling relations and achieve ammonia synthesisunder mild conditions. [...]
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2017-06-16
11:55
OpenAccess [PUBDB-2017-05240] Journal Article
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Morphological structure of Gluconacetobacter xylinus cellulose and cellulose-based organic-inorganic composite materials
ddc:530
Scanning electron microscopy, ultra-small-angle neutron scattering (USANS), small-angle neutron and X-ray scattering (SANS and SAXS), as well as low-temperature nitrogen adsorption, were used in the studies of micro- and mesostructure of polymer matrix prepared from air-dry preliminarily disintegrated cellulose nano-gel film (synthesized by Gluconacetobacter xylinus) and the composites based on this bacterial cellulose. The composites included ZrO$_2$ nanoparticles, Tb$^{3+}$ in the form of low molecular weight salt and of metal-polymer complex with poly(vinylpyrrolydone)-poly(methacryloyl-o-aminobenzoic acid) copolymer [...]
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2017-06-16
10:03
OpenAccess [PUBDB-2017-05205] Journal Article/Contribution to a conference proceedings
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Monitoring microstructural evolution in-situ during cyclic deformation by high resolution reciprocal space mapping
6th International Conference on Fracture Fatigue and Wear, Meeting locationPorto, Portugal, 26 Jul 2017 - 27 Jul 20172017-07-262017-07-27
Journal of physics / Conference Series 843(1), 012031 (2017) [10.1088/1742-6596/843/1/012031]  GO
ddc:530
The recently developed synchrotron technique High Resolution Reciprocal Space Mapping (HRRSM) is used to characterize the deformation structures evolving during cyclic deformation of commercially pure, polycrystalline aluminium AA1050. Insight into the structural reorganization within single grains is gained by in-situ monitoring of the microstructural evolution during cyclic deformation [...]
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2017-06-15
23:02
[PUBDB-2017-05176] Journal Article
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Martensite formation during incremental cooling of Fe-Cr-Ni alloys: An in-situ bulk X-ray study of the grain-averaged and single-grain behavior
ddc:670
The formation of martensite (ε and α′) in metastable austenitic Fe-18Cr-(10-11.5)Ni alloys was investigated in-situ during cooling. High-energy X-rays were used to study the bulk of the alloys [...]
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2017-05-31
15:21
[PUBDB-2017-04114] Journal Article

Synchrotron-Based Capabilities for Studying Engineering Materials at PETRA-III
ddc:530
Scientists and engineers are increasingly using synchrotron radiation, largely due to its special characteristics, including high flux (intensity, high temporal resolution), low divergence (high spatial resolution, efficient focusing), linear polarization, and high penetration power. While surface-sensitive optical, electron microscopy and certain X-ray techniques (grazing incidence diffraction, reflectivity) tackle many problems, materials engineering largely relies on the volume properties of materials: residual strains and textures in the interior of building structures, overall phase composition, slip systems, etc [...]
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2017-05-30
23:57
[PUBDB-2017-04027] Journal Article
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The effect of solution pH on the structural stability of magnetoferritin
ddc:540
The structural stability of magnetoferritin, a synthetic analogue of ferritin, at various pH levels is assessed here. The structural and electrical properties of the complexes were determined by small-angle X-ray scattering (SAXS), dynamic light scattering (DLS) and zeta potential measurements [...]
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2017-05-29
13:08
[PUBDB-2017-03826] Journal Article
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Microstructure and kinetics of intermetallic phase growth of three-layered A1050/AZ31/A1050 clads prepared by explosive welding combined with subsequent annealing
ddc:600
The effect of annealing has been investigated with respect to interface microstructure and evolution ofintermetallic phases in three-layered explosively welded A1050/AZ31/A1050 specimens. Both interfaces in thestate after welding were characterized by wavy shape morphology with intermediate phases, which formedsegmented structures [...]
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2017-05-23
13:42
OpenAccess [PUBDB-2017-03437] Journal Article
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Aggregation behaviour of a single-chain, phenylene-modified bolalipid and its miscibility with classical phospholipids
ddc:540
In the present work, we describe the synthesis of a single-chain, phenylene-modified bolalipid with two phosphocholine headgroups, PC-C18pPhC18-PC, using a Sonogashira cross-coupling reaction as a key step. The aggregation behaviour was studied as a function of temperature using transmission electron microscopy (TEM), differential scanning calorimetry (DSC), Fourier-transform infrared (FTIR) spectroscopy, and small angle neutron scattering (SANS) [...]
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2017-05-18
09:38
OpenAccess [PUBDB-2017-03159] Journal Article
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Interactions between shape-persistent macromolecules as probed by AFM
ddc:540
Water-soluble shape-persistent cyclodextrin (CD) polymers with amino-functionalized end groups were prepared starting from diacetylene-modified cyclodextrin monomers by a combined Glaser coupling/click chemistry approach. Structural perfection of the neutral CD polymers and inclusion complex formation with ditopic and monotopic guest molecules were proven by MALDI–TOF and UV–vis measurements [...]
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