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2018-04-26
14:44
arXiv [PUBDB-2018-01861] Report/Journal Article
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Measurement of the $\Lambda_b$ polarization and angular parameters in $\Lambda_b\to J/\psi\, \Lambda$ decays from pp collisions at $\sqrt{s}=$ 7 and 8 TeV
[CMS-BPH-15-002; CERN-EP-2017-331; arXiv:1802.04867]
An analysis of the bottom baryon decay Λb→J/ψ(→μ+μ-)Λ(→pπ-) is performed to measure the Λb polarization and three angular parameters in data from pp collisions at s=7 and 8 TeV, collected by the CMS experiment at the Large Hadron Collider. The Λb polarization is measured to be 0.00±0.06(stat)±0.06(syst) and the parity-violating asymmetry parameter is determined to be 0.14±0.14(stat)±0.10(syst). [...]
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2018-04-26
14:38
DBCoverage [PUBDB-2018-01859] Report/Journal Article
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Comparing transverse momentum balance of b jet pairs in pp and PbPb collisions at $\sqrt{s_\mathrm{NN}} =$ 5.02 TeV
[CMS-HIN-16-005; CERN-EP-2018-005; arXiv:1802.00707]
The transverse momentum balance of pairs of back-to-back b quark jets in PbPb and pp collisions recorded with the CMS detector at the LHC is reported. The center-of-mass energy in both collision systems is 5.02 TeV per nucleon pair. [...]
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2018-04-25
10:22
DBCoverage [PUBDB-2018-01848] Journal Article
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Influence of Annealing on Microstructure and Mechanical Properties of a Nanocrystalline CrCoNi Medium-Entropy Alloy
Materials 11(5), 662 -680 (2018) [10.3390/ma11050662]  GO
An equiatomic CrCoNi medium-entropy alloy was subjected to high-pressure torsion.This process led to a refinement of the microstructure to a grain size of about 50 nm, combined witha strong increase in the materials hardness. Subsequently, the thermodynamic stability of the mediumentropy alloy was evaluated by isothermal and isochronal heat treatments. [...]
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ddc:600
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2018-04-25
10:07
[PUBDB-2018-01847] Journal Article
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Influence of quasicrystal I-phase on twinning of extruded Mg-Zn-Y alloys under compression
The interaction of the I-phase with twins during compression has been studied in a Mg-6Zn-1Y (wt.%)alloy using the combination of Synchrotron Radiation Diffraction and Acoustic Emission experimentsduring compression tests. The I-phase occurs as coarse particles at grain boundaries and nanosizedprecipitates within magnesium grains. [...]
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ddc:670
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2018-04-24
14:49
[PUBDB-2018-01844] Journal Article
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Nanostructured Low Carbon Steels Obtained from the Martensitic State via Severe Plastic Deformation, Precipitation, Recovery, and Recrystallization
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2018-04-23
14:55
[PUBDB-2018-01831] Report

Machine Protection
[CERN-2018-001-SP]
CERN, 613-629 (2018) [10.23730/CYRSP-2018-001.613]  GO
Conventional linacs used for modern free-electron lasers carry electron beams of unprecedented brightness with average powers ranging from a few watts to hundreds of kilowatts. Energy recovery linacs are already operated as radiation sources with nominal electron beam powers beyond 1 MW, and this figure can only be expected to increase in the future. [...]
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2018-04-20
11:29
[PUBDB-2018-01798] Journal Article
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Electrochemical Tuning of Magnetism in Ordered Mesoporous Transition-Metal Ferrite Films for Micromagnetic Actuation

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2018-04-19
15:37
[PUBDB-2018-01794] Journal Article
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Effects of different Cu loadings on photocatalytic activity of $TiO_{2}-SiO_{2}$ prepared at low temperature oxidation of organic pollutants in water
The objective of this research is to examine how copper modification can improve the photocatalytic activity of TiO2-SiO2, and to explain the correlation between Cu concentration and chemical state of Cu cations in the TiO2-SiO2 matrix, and the photocatalytic activity under the UV/solar irradiation. The Cu-modified TiO2-SiO2 photocatalysts were prepared by a low temperature sol-gel method based on organic copper, silicon and titanium precursors with varied Cu concentrations (from 0.05 to 3 mol%). [...]
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ddc:540
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2018-04-18
13:04
[PUBDB-2018-01785] Journal Article
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Collective resonances of atomic xenon from the linear to the nonlinear regime
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2018-04-11
15:06
[PUBDB-2018-01690] Journal Article
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Phase transitions of α-quartz at elevated temperatures under dynamic compression using a membrane-driven diamond anvil cell: Clues to impact cratering?
Abstract–Coesite and stishovite are high-pressure silica polymorphs known to have beenformed at several terrestrial impact structures. They have been used to assess pressure andtemperature conditions that deviate from equilibrium formation conditions. [...]
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ddc:520
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