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2018-05-16
11:19
[PUBDB-2018-01982] Journal Article
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The impact of steeping, germination and hydrothermal processing of wheat (Triticum aestivum L.) grains on phytate hydrolysis and the distribution, speciation and bio-accessibility of iron and zinc elements
Chelation of iron and zinc in wheat as phytates lowers their bio-accessibility. Steeping and germination (15 °C, 120 h) lowered phytate content from 0.96% to only 0.81% of initial dry matter [...]
ddc:540
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2018-05-08
11:04
DBCoverage [PUBDB-2018-01917] Journal Article
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Sodium vanadium titanium phosphate electrode for symmetric sodium-ion batteries with high power and long lifespan
Sodium-ion batteries operating at ambient temperature hold great promise for use in grid energy storage owing to their significant cost advantages. However, challenges remain in the development of suitable electrode materials to enable long lifespan and high rate capability. [...]
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ddc:500
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2018-05-02
12:42
OpenAccess [PUBDB-2018-01892] Journal Article
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Fast XANES fluorescence imaging using a Maia detector
A new fast X-ray absorption spectroscopy scanning method was recently implemented at the Hard X-ray Microprobe endstation P06, PETRA III, DESY, utilizing a Maia detector. Spectromicroscopy maps were acquired with spectra for X-ray absorption near-edge structure (XANES) acquisition in the sub-second regime. [...]
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ddc:540
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2018-04-27
13:37
[PUBDB-2018-01869] Journal Article
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Formation of block-copolymer-templated mesoporous silica
In situ attenuated total reflectance Fourier transform infrared spectroscopy is used to monitor the chemical evolution of the mesoporous silica SBA-15 from hydrolysis of the silica precursor to final silica condensation after the particle formation. Two silica precursors, tetraethyl orthosilicate (TEOS) or sodium metasilicate (SMS) were used, and the effects of additive (heptane and NH$_4$F) concentrations were studied. [...]
ddc:540
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2018-04-27
12:48
[PUBDB-2018-01868] Journal Article
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Effects of laser processing on the transformation characteristics of NiTi: A contribute to additive manufacturing
Laser additive manufacturing of NiTi generates complex microstructural features not fully understood yet. Thermalsimilarities between lasermicrojoining and laser additivemanufacturing, enables correlating the effect of thelaser on the material in both processes. [...]
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ddc:670
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2018-04-26
15:19
OpenAccess [PUBDB-2018-01865] Journal Article/Contribution to a conference proceedings
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Strains and dislocation densities within a rafted superalloy: In situ investigation during mechanical testing at 1080°C
15th International Conference on the Strength of Materials (ICSMA-15), DresdenDresden, Germany, 16 Aug 2009 - 21 Aug 20092009-08-162009-08-21 Journal of physics / Conference Series 240(1), 012080 () [10.1088/1742-6596/240/1/012080]  GO
During in situ investigation of the distribution of lattice parameters within a superalloy with a rafted microstructure by Three Crystal Diffractometry, both the γ and γ’ peak positions and shapes are shown to change. While the peak positions can be used to measure the average stresses and strains within both phases, the changes in shape are related to these in the dislocation distribution within the material [...]
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ddc:530
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2018-04-26
15:11
[PUBDB-2018-01864] Journal Article
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Measurement of the effective $\gamma/\gamma′$ lattice mismatch during high temperature creep of Ni-based single crystal superalloy
The high temperature effective (constrained) $\gamma/\gamma′$ lattice mismatch of a Ni-based single crystal superalloy has been measured in a wide temperature range [930 °C–1125 °C] using three different techniques: in-situ X-ray diffraction under synchrotron radiation, and post-mortem $\gamma/\gamma′$ interfacial dislocation network mesh size measurements using Transmission Electron Microscopy (TEM) or high resolution Scanning Electron Microscopy (SEM).It is shown that all three techniques are complementary considering precision and spatial distribution of lattice mismatches in the analyzed volume and that they provide a very similar average value of the $\gamma/\gamma′$ lattice mismatch. Since isothermal creep experiments were performed under variable applied stress, it is deduced that the post-mortem lattice misfit measurements using both TEM and SEM are representative of the very last loading step of the experiments, even if dislocation networks are out of an equilibrium configuration. [...]
ddc:670
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2018-04-26
14:59
[PUBDB-2018-01863] Journal Article
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High Resolution Diffraction of a Superalloy during HT Processing and Mechanical Testing: Experiments and Modeling
We present a computer inexpensive method to calculate the profile of the high resolution diffraction pattern of a single crystal superalloy. The displacement field is taken as the sum of the individual fields of cuboidal inclusions with uniform eigenstrains. [...]
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ddc:670
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2018-04-26
14:57
[PUBDB-2018-01862] Journal Article
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Cluster Assemblies Produced by Aggregation of Preformed Ag Clusters in Ionic Liquids
Langmuir 34(16), 4811 - 4819 () [10.1021/acs.langmuir.7b03984]  GO
Room-temperature ionic liquids (RTILs) can be used as electrosterical stabilizers for nanoparticles without adding stabilizing agents. However, the nanoparticle stability and its mechanisms are still in discussion. [...]
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ddc:670
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2018-04-26
14:43
[PUBDB-2018-01860] Journal Article
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Creep of a nickel-based single-crystal superalloy during very high-temperature jumps followed by synchrotron X-ray diffraction
Complex thermomechanical loadings at high temperature (T ⩾ 950 °C) on the AM1 single-crystal superalloy were studied by X-ray diffraction under synchrotron radiation. This technique enables in situ access to the evolutions of the lattice mismatch as well as the volume fraction and the dislocation density of the γ and γ′ phases during high-temperature non-isothermal creep loadings. [...]
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ddc:670
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