FS-PE

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2019-06-11
18:06
[PUBDB-2019-02457] Journal Article
et al
Allanite at high pressure: effect of REE on the elastic behaviour of epidote-group minerals
The compressional behaviour of a natural allanite from Lago della Vecchia (upper Cervo valley, Italy) metagranitoids[A1(Ca0.69Fe2+0.31)Σ1.00A2(Ca0.46Ce0.24La0.12Sm0.02Pr0.05Nd0.09Th0.02)Σ1.00M1(Al0.65Fe3+0.34Ti0.02)Σ1.01M2(Al0.99)M3(Fe3+0.54Fe2+0.36Mg0.06Ti4+0.02Al0.01)Σ0.99 Si1,Si2,Si3(Si2.80Al0.20)Σ3.00O11(OH,O)] has been investigated up to 16 GPa (at 298 K) by means of in situsynchrotron single-crystal X-ray diffraction. Experiments have been conducted under hydrostatic conditions, using a diamondanvil cell and the mix methanol:ethanol:water = 16:3:1 (up to 10 GPa) and neon (up to 16 GPa) as pressure-transmittingmedia. [...]
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ddc:530
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2019-06-06
13:25
[PUBDB-2019-02425] Journal Article
et al
Synchrotron X-ray fluorescence mapping of Ca, Sr and Zn at the neonatal line in human deciduous teeth reflects changing perinatal physiology
Objectives: Our first objective was to review the evidence describing the appearance and microstructure of theneonatal line in human deciduous teeth and to link this with known changes in neonatal physiology occurring atand around birth. A second objective was to explore ways to improve identification of the neonatal line bymapping the pre- and postnatal distribution of Ca, Sr and Zn in deciduous cuspal enamel and superimposingthese maps onto transmitted light micrographs that included a clear true section of the neonatal line.Materials and methods: We used synchrotron X-ray fluorescence to map elemental distributions in pre- andpostnatal enamel and dentine. [...]
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ddc:610
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2019-05-27
17:38
Embargoed OpenAccess [PUBDB-2019-02382] Journal Article
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MicroX-ray absorption near edge structure tomography reveals cell-specific changes of Zn ligands in leaves of turnip yellow mosaic virus infected plants
As many metals are essential for plants, excess or deficiency of them or alteration of their uptake, translocation, sequestration or physiological use can have severe consequences for plant growth and fitness. Therefore, investigating the distribution and speciation of metals in tissues is essential to understand plant physiology. [...]
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ddc:530
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2019-05-25
11:46
OpenAccess [PUBDB-2019-02367] Journal Article
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Pressure-induced magnetovolume effect in CoCrFeAl high-entropy alloy
High-entropy alloys (HEAs) composed of multiple-principal elements with (nearly) equimolar ratio establish a new conceptual framework for alloy design and hold a promise for extensive applications in industry, akin to the controlled expansion alloys (CEAs), such as Invar alloys. Spontaneously, one question emerges - would it be possible to synthesize a novel class of alloys combining the virtues of both CEAs and HEAs? Here, we report the pressure-induced magnetovolume effect in the body-centered-cubic CoCrFeAl HEA coupled with magnetic phase transitions from ferromagnetic to paramagnetic, and to non-magnetic states, originating from the successive collapses of local magnetic moments of Co and Fe [...]
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ddc:530
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2019-05-09
12:24
OpenAccess [PUBDB-2019-02227] Journal Article
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Functional Printing of Conductive Silver-Nanowire Photopolymer Composites
We investigated the fabrication and functional behaviour of conductive silver-nanowire-polymer composites for prospective use in printing applications. Silver-nanowires with an aspect ratio of up to 1000 were synthesized using the polyol route and embedded in a UV-curable and printable polymer matrix [...]
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ddc:600
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2019-05-02
00:06
OpenAccess [PUBDB-2019-02127] Bachelor Thesis

Phänomenologische Monte-Carlo Simulation zur Goldclusterwachstumskinetik während der Sputter-Deposition
56 pp. () [10.3204/PUBDB-2019-02127] = Bachelorarbeit, University of Hamburg, 2014  GO
Die Bachelorarbeit wurde in der Forschungsgruppe MiNaXS-P03 unter der Leitung vonDr. Stephan V [...]
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2019-04-30
14:11
OpenAccess [PUBDB-2019-02124] Master Thesis

Experimente zu metallischem Clusterwachstum während der Sputter Deposition im Vergleich zu kinetischen Monte Carlo Simulationen
97 pp. () [10.3204/PUBDB-2019-02124] = Masterarbeit, University of Hamburg, 2016  GO
Die Masterarbeit wurde in der Forschungsgruppe MiNaXS-P03 unter Leitung von Adj. Prof [...]
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2019-04-25
17:05
[PUBDB-2019-02079] Journal Article
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Amorphous versus Crystalline $Li_3PS_{4}$: Local Structural Changes during Synthesis and Li Ion Mobility
Glass–ceramic solid electrolytes have been reported to exhibit high ionic conductivities. Their synthesis can be performed by crystallization of mechanically milled Li2S–P2S5 glasses. [...]
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ddc:530
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2019-04-25
16:50
OpenAccess [PUBDB-2019-02078] Journal Article
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Electrochemical Lithium Extraction and Insertion Process of Sol-Gel Synthesized $LiMnPO_{4}$ via Two-Phase Mechanism
Olivine-type LiMnPO4 was synthesized via a citric-acid assisted sol-gel method. The structural evolution of the as-prepared material during calcination and the crystallization of $LiMnPO_{4}$ was investigated by XRD measurements. [...]
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ddc:660
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2019-04-17
14:02
OpenAccess [PUBDB-2019-02016] Journal Article
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Polymerized 4-Fold Coordinated Carbonate Melts in the Deep Mantle
Our understanding of the deep carbon cycle has witnessed amazing advances in the last decade, including the discovery of tetrahedrally coordinated high pressure (P) carbonate phases. However, little is known about the physical properties of their molten counterpart at moderate depths, while their properties at lower mantle conditions remain unexplored [...]
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ddc:550
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