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2021-05-14
11:50
arXiv [PUBDB-2021-02292] Journal Article
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A Search for Time-dependent Astrophysical Neutrino Emission with IceCube Data from 2012 to 2017
[arXiv:2012.01079]
High-energy neutrinos are unique messengers of the high-energy universe, tracing the processes of cosmic ray acceleration. This paper presents analyses focusing on time-dependent neutrino point-source searches. [...]
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2021-05-14
10:49
arXiv [PUBDB-2021-02289] Journal Article
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Broadband Multi-wavelength Properties of M87 during the 2017 Event Horizon Telescope Campaign
[arXiv:2104.06855]
In 2017, the Event Horizon Telescope (EHT) Collaboration succeeded in capturing the first direct image of the center of the M87 galaxy. The asymmetric ring morphology and size are consistent with theoretical expectations for a weakly accreting supermassive black hole of mass ∼6.5 × 109 M ⊙. [...]
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2021-05-14
10:36
DBCoverage [PUBDB-2021-02288] Journal Article
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Dimensional Expressivity Analysis of Parametric Quantum Circuits
[HU-EP-20/31; arXiv:2011.03532]
Quantum 5, 422 - () [10.22331/q-2021-03-29-422]  GO
Parametric quantum circuits play a crucial role in the performance of many variational quantum algorithms. To successfully implement such algorithms, one must design efficient quantum circuits that sufficiently approximate the solution space while maintaining a low parameter count and circuit depth. [...]
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2021-05-14
10:29
arXiv [PUBDB-2021-02286] Journal Article
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Multi-wavelength and neutrino emission from blazar PKS 1502+106
[arXiv:2009.04026]
In July of 2019, the IceCube experiment detected a high-energy neutrino from the direction of the powerful blazar PKS 1502+106. We perform multi-wavelength and multi-messenger modeling of this source, using a fully self-consistent one-zone model, which includes the contribution of external radiation fields typical of flat-spectrum radio quasars (FSRQs). [...]
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2021-05-09
13:54
[PUBDB-2021-02188] Journal Article
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Unravelling Magnetic Nanochain Formation in Dispersion for In Vivo Applications
Self‐assembly of iron oxide nanoparticles (IONPs) into 1D chains is appealing, because of their biocompatibility and higher mobility compared to 2D/3D assemblies while traversing the circulatory passages and blood vessels for in vivo biomedical applications. In this work, parameters such as size, concentration, composition, and magnetic field, responsible for chain formation of IONPs in a dispersion as opposed to spatially confining substrates, are examined. [...]
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2021-04-12
22:15
[PUBDB-2021-01778] Journal Article
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On the Microstructural and Cyclic Mechanical Properties of Pure Iron Processed by Electron Beam Melting
Additive manufacturing (AM) processes such as electron beam melting (EBM) are characterized by unprecedented design freedom. Topology optimization and design of the microstructure of metallic materials are enabled by rapid progress in this field. [...]
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2021-04-09
22:31
[PUBDB-2021-01738] Journal Article
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The Electrophilicity of Surface Carbon Species in the Redox Reactions of $CuO‐CeO_{2}$ Catalysts
Electronic metal–support interactions (EMSI) describe the electron flow between metal sites and a metal oxide support. It is generally used to follow the mechanism of redox reactions. [...]
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2021-04-09
09:55
[PUBDB-2021-01700] Journal Article
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Lattice strain during compressive loading of AlCrFeNiTi multi-principal element alloys
In this work, multi-principal element alloys (MPEAs) with the five base elements Al, Cr, Fe, Ni and Ti plus elements in minor amounts were produced by powder metallurgy and their microstructure and elastic behavior were analyzed via light and scanning electron microscopy, electron backscatter diffraction (EBSD)and synchrotron X-ray diffraction. The two studied compositions are an MPEA with Al, Cr, Fe, Ni and Ti in equimolar ratio as well as a similar composition with a concentration of Ti reduced to 10 mol%. [...]
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2021-03-25
13:04
[PUBDB-2021-01542] Journal Article
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Predicting strength of Finnish birch veneers based on three different failure criteria
Holzforschung 0(0), 000010151520200209 () [10.1515/hf-2020-0209]  GO
The use of wood in high-performance composites based on laminated veneer products, plywood or wood hybrid elements thereof requires accurate prediction of strength of each individual ply. Previous research has shown that one dominating factor influencing the strength of birch veneers is the fibre orientation. [...]
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2021-03-18
08:59
[PUBDB-2021-01455] Journal Article
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Electrochemical top-down synthesis of C-supported Pt nano-particles with controllable shape and size: Mechanistic insights and application
In this work, we demonstrate the power of a simple top-down electrochemical erosion approach to obtain Pt nanoparticle with controlled shapes and sizes (in the range from ∼ 2 to ∼ 10 nm). Carbon supported nanoparticles with narrow size distributions have been synthesized by applying an alternating voltage to macroscopic bulk platinum structures, such as disks or wires. [...]
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