Open Access

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2017-09-22
08:47
OpenAccess [FZJ-2017-06699] Journal Article
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Pavlovian conditioning demonstrated with neuromorphic memristive devices
ddc:000
Pavlovian conditioning, a classical case of associative learning in a biological brain, is demonstrated using the Ni/Nb-SrTiO3/Ti memristive device with intrinsic forgetting properties in the framework of the asymmetric spike-timing-dependent plasticity of synapses. Three basic features of the Pavlovian conditioning, namely, acquisition, extinction and recovery, are implemented in detail. [...]
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2017-09-22
08:45
OpenAccess [FZJ-2017-06698] Journal Article
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De novo Transcriptome Analysis of Miscanthus Iutarioriparius Indentifies Candidate Genes in Rhizome Development
ddc:570
Miscanthus lutarioriparius is a promising lignocellulosic feedstock for second-generation bioethanol production. However, the genomic resource for this species is relatively limited thus hampers our understanding of the molecular mechanisms underlying many important biological processes. [...]
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2017-09-21
16:06
OpenAccess [FZJ-2017-06691] Journal Article
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Comparative transcriptome analysis of second- and third-generation merozoites of Eimeria necatrix
ddc:570
BackgroundEimeria is a common genus of apicomplexan parasites that infect diverse vertebrates, most notably poultry, causing serious disease and economic losses. Eimeria species have complex life-cycles consisting of three developmental stages. [...]
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2017-09-21
16:03
OpenAccess [FZJ-2017-06690] Journal Article
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Insights into the dielectric response of ferroelectric relaxors from statistical modeling
ddc:530
Ferroelectric relaxors are complex materials with distinct properties. The understanding of their dielectric susceptibility, which strongly depends on both temperature and probing frequency, has been a challenge for researchers for many years. [...]
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2017-09-21
11:27
OpenAccess [FZJ-2017-06677] Journal Article
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Anomalous phonons in CaFe 2 As 2 explored by inelastic neutron scattering3
ddc:530
Extensive inelastic neutron scattering measurements of phonons on a single crystal of CaFe2As2 allowed us to establish a fairly complete picture of phonon dispersions in the main symmetry directions. The phonon spectra were also calculated by density functional theory (DFT) in the local density approximation (LDA). [...]
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2017-09-21
11:05
OpenAccess [FZJ-2017-06675] Journal Article
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Pressure-driven Phase Transition in CaFeAsF at 40 and 300 K
ddc:530
We carried out systematic investigation of high pressure crystal structure and structural phase transition upto 46 GPa at 40 K and 25 GPa at 300 K in CaFeAsF using powder synchrotron x-ray diffraction experiments. Rietveld analysis of the diffraction data at 40 K reveals a structural phase transition from an orthorhombic to a monoclinic phase at Pc = 13.7 GPa, while increasing pressure. [...]
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2017-09-20
10:18
OpenAccess [FZJ-2017-06648] Journal Article
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Quantitative Agreement between Electron-Optical Phase Images of WSe 2 and Simulations Based on Electrostatic Potentials that Include Bonding Effects
ddc:550
The quantitative analysis of electron-optical phase images recorded using off-axis electron holography often relies on the use of computer simulations of electron propagation through a sample. However, simulations that make use of the independent atom approximation are known to overestimate experimental phase shifts by approximately 10%, as they neglect bonding effects. [...]
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2017-09-19
16:06
OpenAccess [FZJ-2017-06641] Journal Article
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Intercomparison of AIRS and HIRDLS stratospheric gravity wave observations
ddc:550
We investigate stratospheric gravity wave observations by the Atmospheric InfraRed Sounder (AIRS) aboard NASA's Aqua satellite and the High Resolution Dynamics Limb Sounder (HIRDLS) aboard NASA's Aura satellite. AIRS operational temperature retrievals are typically not used for studies of gravity waves, because their horizontal resolution is rather limited. [...]
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2017-09-19
15:13
OpenAccess [FZJ-2017-06636] Journal Article
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Measuring the orbital angular momentum spectrum of an electron beam
ddc:500
Electron waves that carry orbital angular momentum (OAM) are characterized by a quantized and unbounded magnetic dipole moment parallel to their propagation direction. When interacting with magnetic materials, the wavefunctions of such electrons are inherently modified [...]
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2017-09-19
15:11
OpenAccess [FZJ-2017-06635] Journal Article
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An in-plane magnetic chiral dichroism approach for measurement of intrinsic magnetic signals using transmitted electrons
ddc:500
Electron energy-loss magnetic chiral dichroism is a powerful technique that allows the local magnetic properties of materials to be measured quantitatively with close-to-atomic spatial resolution and element specificity in the transmission electron microscope. Until now, the technique has been restricted to measurements of the magnetic circular dichroism signal in the electron beam direction. [...]
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