cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
R-Process elements from magnetorotational hypernovae
Creators: name: Yong, D.
name: Kobayashi, C.
name: Da Costa, G. S.
name: Bessell, M. S.
name: Chiti, A.
name: Frebel, A.
name: Lind, K.
name: Mackey, A. D.
name: Nordlander, T.
name: Asplund, M.
name: Casey, A. R.
name: Marino, A. F.
name: Murphy, S. J.
name: Schmidt, B. P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Neutron-star mergers were recently confirmed as sites of rapid-neutron-capture (r-process) nucleosynthesis. However, in Galactic chemical evolution models, neutron-star mergers alone cannot reproduce the observed element abundance patterns of extremely metal-poor stars, which indicates the existence of other sites of r-process nucleosynthesis. These sites may be investigated by studying the element abundance patterns of chemically primitive stars in the halo of the Milky Way, because these objects retain the nucleosynthetic signatures of the earliest generation of stars. Here we report the element abundance pattern of the extremely metal-poor star SMSS J200322.54-114203.3. We observe a large enhancement in r-process elements, with very low overall metallicity. The element abundance pattern is well matched by the yields of a single 25-solar-mass magnetorotational hypernova. Such a hypernova could produce not only the r-process elements, but also light elements during stellar evolution, and iron-peak elements during explosive nuclear burning. Hypernovae are often associated with long-duration gamma-ray bursts in the nearby Universe. This connection indicates that similar explosions of fast-spinning strongly magnetized stars occurred during the earliest epochs of star formation in our Galaxy.
description: Author's version of a Letter published in Nature on July 8th, 2021
Politisch auf Reise
Creators: name: Morant I Ariño, Toni
Publisher: name: Österreichische Zeitschrift für Geschichtswissenschaften
Year: 2016

description: Österreichische Zeitschrift für Geschichtswissenschaften, Bd. 27 Nr. 3 (2016): Perspektivenwechsel. Geschlechterverhältnisse im Austrofaschismus
Vector meson $ω$-$ϕ$ mixing and their form factors in light-cone quark model
Creators: name: Qian, Wen
name: Ma, Bo-Qiang
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The vector meson $ω$-$ϕ$ mixing is studied in two alternative scenarios with different numbers of mixing angles, i.e., the one-mixing-angle scenario and the two-mixing-angle scenario, in both the octect-singlet mixing scheme and the quark flavor mixing scheme. Concerning the reproduction of experimental data and the $Q^2$ behavior of transition form factors, one-mixing-angle scenario in the quark flavor scheme performs better than that in the octet-singlet scheme, while the two-mixing-angle scenario works well for both mixing schemes. The difference between the two mixing angles in the octet-singlet scheme is bigger than that in the quark flavor scheme.
description: 16 pages, 7 figures, final version to appear in PRD
Wilsonian renormalization, differential equations and Hopf algebras
Creators: name: Krajewski, Thomas
name: Martinetti, Pierre
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper, we present an algebraic formalism inspired by Butcher's B-series in numerical analysis and the Connes-Kreimer approach to perturbative renormalization. We first define power series of non linear operators and propose several applications, among which the perturbative solution of a fixed point equation using the non linear geometric series. Then, following Polchinski, we show how perturbative renormalization works for a non linear perturbation of a linear differential equation that governs the flow of effective actions. Then, we define a general Hopf algebra of Feynman diagrams adapted to iterations of background field effective action computations. As a simple combinatorial illustration, we show how these techniques can be used to recover the universality of the Tutte polynomial and its relation to the $q$-state Potts model. As a more sophisticated example, we use ordered diagrams with decorations and external structures to solve the Polchinski's exact renormalization group equation. Finally, we work out an analogous construction for the Schwinger-Dyson equations, which yields a bijection between planar $ϕ^{3}$ diagrams and a certain class of decorated rooted trees.
description: 42 pages, 26 figures in PDF format, extended version of a talk given at the conference "Combinatorics and physics" held at Max Planck Institut fuer Mathematik in Bonn in march 2007, some misprints corrected
Distillation of Liquid Xenon to Remove Krypton
Creators: name: Abe, K.
name: Hosaka, J.
name: Iida, T.
name: Ikeda, M.
name: Kobayashi, K.
name: Koshio, Y.
name: Minamino, A.
name: Miura, M.
name: Moriyama, S.
name: Nakahata, M.
name: Nakajima, Y.
name: Namba, T.
name: Ogawa, H.
name: Sekiya, H.
name: Shiozawa, M.
name: Suzuki, Y.
name: Takeda, A.
name: Takeuchi, Y.
name: Ueshima, K.
name: Yamashita, M.
name: Kaneyuki, K.
name: Ebizuka, Y.
name: Kikuchi, J.
name: Ota, A.
name: Suzuki, S.
name: Takahashi, T.
name: Hagiwara, H.
name: Kamei, T.
name: Miyamoto, K.
name: Nagase, T.
name: Nakamura, S.
name: Ozaki, Y.
name: Sato, T.
name: Fukuda, Y.
name: Sato, T.
name: Nishijima, K.
name: Sakurai, M.
name: Maruyama, T.
name: Motoki, D.
name: Itow, Y.
name: Ohsumi, H.
name: Tasaka, S.
name: Kim, S. B.
name: Kim, Y. D.
name: Lee, J. I.
name: Moon, S. H.
name: Urakawa, Y.
name: Uchino, M.
name: Kamioka, Y.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: A high performance distillation system to remove krypton from xenon was constructed, and a purity level of Kr/Xe = $\sim 3 \times 10^{-12}$ was achieved. This development is crucial in facilitating high sensitivity low background experiments such as the search for dark matter in the universe.
description: 15 pages, 11 figures
Mixed Reality using Illumination-aware Gradient Mixing in Surgical Telepresence: Enhanced Multi-layer Visualization
Creators: name: Puri, Nirakar
name: Alsadoon, Abeer
name: Prasad, P. W. C.
name: Alsalami, Nada
name: Rashid, Tarik A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Multimedia (cs.MM)
subject: Artificial Intelligence (cs.AI)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Background and aim: Surgical telepresence using augmented perception has been applied, but mixed reality is still being researched and is only theoretical. The aim of this work is to propose a solution to improve the visualization in the final merged video by producing globally consistent videos when the intensity of illumination in the input source and target video varies. Methodology: The proposed system uses an enhanced multi-layer visualization with illumination-aware gradient mixing using Illumination Aware Video Composition algorithm. Particle Swarm Optimization Algorithm is used to find the best sample pair from foreground and background region and image pixel correlation to estimate the alpha matte. Particle Swarm Optimization algorithm helps to get the original colour and depth of the unknown pixel in the unknown region. Result: Our results showed improved accuracy caused by reducing the Mean squared Error for selecting the best sample pair for unknown region in 10 each sample for bowel, jaw and breast. The amount of this reduction is 16.48% from the state of art system. As a result, the visibility accuracy is improved from 89.4 to 97.7% which helped to clear the hand vision even in the difference of light. Conclusion: Illumination effect and alpha pixel correlation improves the visualization accuracy and produces a globally consistent composition results and maintains the temporal coherency when compositing two videos with high and inverse illumination effect. In addition, this paper provides a solution for selecting the best sampling pair for the unknown region to obtain the original colour and depth.
description: 24 pages
Strong dissipation inhibits losses and induces correlations in cold molecular gases
Creators: name: Syassen, N.
name: Bauer, D. M.
name: Lettner, M.
name: Volz, T.
name: Dietze, D.
name: Garcia-Ripoll, J. J.
name: Cirac, J. I.
name: Rempe, G.
name: Dürr, S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Atomic quantum gases in the strong-correlation regime offer unique possibilities to explore a variety of many-body quantum phenomena. Reaching this regime has usually required both strong elastic and weak inelastic interactions, as the latter produce losses. We show that strong inelastic collisions can actually inhibit particle losses and drive a system into a strongly-correlated regime. Studying the dynamics of ultracold molecules in an optical lattice confined to one dimension, we show that the particle loss rate is reduced by a factor of 10. Adding a lattice along the one dimension increases the reduction to a factor of 2000. Our results open up the possibility to observe exotic quantum many-body phenomena with systems that suffer from strong inelastic collisions.
title: Tuning the physical and optoelectronic properties of phosphorescent iridium(III) complexes : applications to organic semiconductor devices
Creators: name: Henwood, Adam Francis
Publisher: name: University of St Andrews
publisherIdentifier: https://ror.org/02wn5qz54
publisherIdentifierScheme: ROR
Year: 2017

description: This thesis explores the design, synthesis and characterisation of iridium(III) complexes for optoelectronic applications; in particular, cationic [Ir(CˆN)₂(NˆN)]⁺-type emitters (where CˆN is an anionic bidentate cyclometalating ligand such as 2-phenylpyridinato, ppy, and NˆN is a neutral bidentate ligand such as 2,2’-bipyridine, bpy) for use in light-emitting electrochemical cells (LEECs). Design strategies aim to achieve high photoluminescence quantum yields (Φ[sub](PL)) for these complexes. Chapter 1 provides an overview of the fundamental photophysics of luminescent transition metal complexes, before reviewing state of the art iridium complexes employed in LEEC devices. Chapter 2 employs a combination of the electron-deficient 2,4-difluorophenylpyridine (dFppy) CˆN ligand and various functionalised biimidazole (biim) NˆN ligands. Within the family of different biim ligands the emission energy does not vary significantly, but the excited state kinetics di.er depending on the rigidity of the biim ligand. Combining the lead biim ligand with a sterically bulkier CˆN ligand gives an iridium complex that emits deep blue light with 90% Φ[sub](PL) in MeCN. Chapter 3 describes an approach to replacing the electrochemically unstable aryl carbon-fluorine bonds in dFppy, while maintaining the deep blue emission colour observed for the complexes in Chapter 2. Chapter 4 expands on the concept of rigid biim ligands to bibenzimidazoles (bibenz). Combining conjugated bibenz NˆN ligands with more conjugated CˆN ligands allows for the emission colour of these complexes to be tuned to the orange/red. The Φ[sub](PL) necessarily falls due to the energy gap law, but is nevertheless higher than values measured for reference complexes. Chapter 5 explores the use of an arylazoimidazole ligand with donor-acceptor intraligand charge transfer characteristics in order to red-shift the emission further. The resultant complex is poorly emissive, but shows a panchromic absorption profile and high molar absorptivity, which is unusual for iridium(III) complexes. The absorption profile can be tuned as a function of the protonation state of the imidazole.
Magneto-thermal properties of the spin-s Heisenberg antiferromagnet on the cuboctahedron
Creators: name: Honecker, A.
name: Zhitomirsky, M. E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We use the example of the cuboctahedron, a highly frustrated molecule with 12 sites, to study the approach to the classical limit. We compute magnetic susceptibility, specific heat, and magnetic cooling rate at high magnetic fields and low temperatures for different spin quantum numbers s. Remarkably big deviations of these quantities from their classical counterparts are observed even for values of s which are usually considered to be almost classical.
description: 4 pages including 10 PostScript files; to appear in Journal of Physics: Conference Series (proceedings of HFM2008)
Gravity with dynamical torsion
Creators: name: Katanaev, M. O.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We propose four simple Lagrangians for gravity models with dynamical torsion which are free from ghosts and tachyons. The torsion propagates two massive or massless particles of spin 1^\pm and 0^\pm besides the massless graviton 2^+ propagated by metric.
description: 9 pages
Material for WalkingTime: Dynamic Graph Embeddings Using Temporal-Topological Flows
Creators: name: Bayani, David
Publisher: name: Zenodo
Year: 2021
Subjects: dynamic networks
representation learning
dynamic graph embedding
time-respecting paths
temporal-topological flows
temporal random walks
temporal networks
real-attributed knowledge graphs
streaming graphs
online networks
asynchronous graphs
asynchronous networks
graph algorithms
deep learning
network analysis
datamining
network science

description: This Zenodo upload contains various materials relating to research / publications on WalkingTime - a temporal graph embedding algorithm. Please see the file named "manifest.xml" for a further description of the content contained herein. As shown in the metadata files provided, the vast majority of work for WalkingTime was conducted in late 2018. In addition to the content provided here, a related writeup can be found on ArXiv with the following bibliographic information:
 @misc{bayani2021walkingtime,
 title={WalkingTime: Dynamic Graph Embedding Using Temporal-Topological Flows},
 author={David Bayani},
 year={2021},
 eprint={2111.10928},
 archivePrefix={arXiv},
 primaryClass={cs.LG},
 url={https://arxiv.org/abs/2111.10928}
 }
editorial: aus ernährungsgeschichtlicher perspektive
Creators: name: Schwarz-Gräber, Ulrich
name: Eigner, Peter
Publisher: name: Österreichische Zeitschrift für Geschichtswissenschaften
Year: 2019

description: Österreichische Zeitschrift für Geschichtswissenschaften, Bd. 30 Nr. 2 (2019): Ernährungsgeschichte / Food History
The Formation of Binary Star Clusters in the Milky Way and Large Magellanic Cloud
Creators: name: Darma, R.
name: Arifyanto, M. I.
name: Kouwenhoven, M. B. N.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Recent observations of young embedded clumpy clusters and statistical identifications of binary star clusters have provided new insights into the formation process and subsequent dynamical evolution of star clusters. The early dynamical evolution of clumpy stellar structures provides the conditions for the origin of binary star clusters. Here, we carry out $N$-body simulations in order to investigate the formation of binary star clusters in the Milky Way and in the Large Magellanic Cloud (LMC). We find that binary star clusters can form from stellar aggregates with a variety of initial conditions. For a given initial virial ratio, a higher degree of initial substructure results in a higher fraction of binary star clusters. The number of binary star clusters decreases over time due to merging or dissolution of the binary system. Typically, $\sim 45\%$ of the aggregates evolve into binary/multiple clusters within $t=20$~Myr in the Milky Way environment, while merely $\sim30\%$ survives beyond $t=50$~Myr, with separations $\lesssim 50$~pc. On the other hand, in the LMC, $\sim 90\%$ of the binary/multiple clusters survive beyond $t=20$~Myr and the fraction decreases to $\sim 80\%$ at $t=50$~Myr, with separations $\lesssim 35~$pc. Multiple clusters are also rapidly formed for highly-substructured and expanding clusters. The additional components tend to detach and the remaining binary star cluster merges. The merging process can produce fast rotating star clusters with mostly flat rotation curves that speed up in the outskirts.
description: accepted 2021 July 5, to be published in MNRAS, 19 pages
The ISM in spiral galaxies: can cooling in spiral shocks produce molecular clouds?
Creators: name: Dobbs, Clare
name: Glover, Simon
name: Clark, Paul
name: Klessen, Ralf
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the thermodynamics of the ISM and the formation of molecular hydrogen through numerical simulations of spiral galaxies. The model follows the chemical, thermal and dynamical response of the disc to an external spiral potential. Self-gravity and magnetic fields are not included. The calculations demonstrate that gas can cool rapidly when subject to a spiral shock. Molecular clouds in the spiral arms arise through a combination of compression of the ISM by the spiral shock and orbit crowding. These results highlight that local self-gravity is not required to form molecular clouds. Self-shielding provides a sharp transition density, below which gas is essentially atomic, and above which the molecular gas fraction is >0.001. The timescale for gas to move between these regimes is very rapid (50 %). Although our calculations are unable to resolve turbulent motions on scales smaller than the spiral arm and do not include self-gravity. True cloud formation timescales are therefore expected to be even shorter. The mass budget of the disc is dominated by cold gas residing in the spiral arms. Between 50 and 75 % of this gas is in the atomic phase. When this gas leaves the spiral arm and drops below the self-shielding limit it is heated by the galactic radiation field. Consequently, most of the volume in the interarm regions is filled with warm atomic gas. However, some cold spurs and clumps can survive in interarm regions for periods comparable to the interarm passage timescale. Altogether between 7 and 40% of the gas in our disc is molecular, depending on the surface density of the calculation, with approximately 20% molecular for a surface density comparable to the solar neighbourhood.
description: 16 pages, 19 figures, accepted for publication in MNRAS
Normalized Sombor indices as complexity measures of random graphs
Creators: name: Aguilar-Sanchez, R.
name: Mendez-Bermudez, J. A.
name: Rodriguez, Jose M.
name: Sigarreta, Jose M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: We perform a detailed computational study of the recently introduced Sombor indices on random graphs. Specifically, we apply Sombor indices on three models of random graphs: Erdös-Rényi graphs, random geometric graphs, and bipartite random graphs. Within a statistical random matrix theory approach, we show that the average values of Sombor indices, normalized to the order of the graph, scale with the graph average degree. Moreover, we discuss the application of average Sombor indices as complexity measures of random graphs and, as a consequence, we show that selected normalized Sombor indices are highly correlated with the Shannon entropy of the eigenvectors of the graph adjacency matrix.
description: 21 pages, 8 figures
IGR J18483-0311: a new intermediate supergiant fast X-ray transient
Creators: name: Rahoui, F.
name: Chaty, S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: IGR J18483-0311 is a high-mass X-ray binary recently discovered by INTEGRAL. Its periodic fast X-ray transient activity and its position in the Corbet diagram - although ambiguous - led to the conclusion that the source was a likely Be/X-ray binary (BeXB), even if a supergiant fast X-ray transient (SFXT) nature could not be excluded. We aimed at identifying the companion star of IGR J18483-0311 to discriminate between the BeXB and the SFXT nature of the source. Optical and near-infrared photometry, as well as near-infrared spectroscopy of the companion star were performed to identify its spectral type. We also assembled and fitted its broad-band spectral energy distribution to derive its physical parameters. We show that the companion star of IGR J18483-0311 is an early-B supergiant, likely a B0.5Ia, and that its distance is about 3-4 kpc. The early-B supergiant nature of its companion star, as well as its fast X-ray transient activity point towards an SFXT nature of IGR J18483-0311. Nevertheless, the long duration and the periodicity of its outbursts, as well as its high level of quiescence, are consistent with IGR J18483-0311 being an intermediate SFXT, in between classical supergiant X-ray binaries (SGXBs) characterised by small and circular orbits, and classical SFXTs with large and eccentric orbits.
description: 5 pages, 2 figures, 3 tables, accepted in A&A
Shor's factorization algorithm with a single control qubit and imperfections
Creators: name: Garcia-Mata, Ignacio
name: Frahm, Klaus M.
name: Shepelyansky, Dima L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We formulate and numerically simulate the single control qubit Shor algorithm for the case of static imperfections induced by residual couplings between qubits. This allows us to study the accuracy of Shor's algorithm with respect to these imperfections using numerical simulations of realistic quantum computations with up to $n_q=18$ computational qubits allowing to factor numbers up to N=205193. We confirm that the algorithm remains operational up to a critical coupling strength $ε_c$ which drops only polynomially with $\log_2 N$. The obtained numerical dependence of $ε_c$ on $\log_2 N$ is in a good agreement with the analytical estimates that allows to obtain the scaling for functionality of Shor's algorithm on realistic quantum computers with a large number of qubits.
description: 9 pages 5 figures, and 1 table. Research at http://www.quantware.ups-tlse.fr/
A long term energy policy model for Canada
Creators: name: Fuller, John David
Publisher: name: University of British Columbia
Year: 2010

description: The construction of a dynamic, long term model of the Canadian energy sector is discussed, with examples of policy analysis done with the model. A linear process model of energy supply, conversion, distribution and end-use is linked to a model of the demands for services provided by energy in combination with other inputs. Nonlinear programming is used to find the supply-demand equilibrium by maximizing the discounted sum of consumers' plus producers' surplus over all periods — three five-year periods followed by three ten-year periods, from 1975 to 2020. Long-run marginal cost curves for coal, oil and natural gas are approximated by limiting the total amounts available at different cost levels. Upper limits on exports represent current policies and bring about a two price system (domestic and international) in the model. Two regions are distinguished throughout the model: the west, west of the Ontario-Manitoba border, is the main producer of coal, oil and gas; the east, with the larger energy demands, may import coal,, oil and gas from the west, or coal and oil from other countries, if necessary. The model may be used to analyze issues of energy pricing, the timing of the introduction of frontier resources and new technologies, the competitiveness and impacts of some new technologies, the impacts of various levels of energy exports, and the impacts of various potential policy constraints. A base case is developed, with the best estimates of all parameters. In addition, low demand and high demand cases are developed to test the sensitivity of conclusions to base case assumptions about economic and population growth. Some important conclusions are as follows. Frontier natural gas will not be needed until after the year 2000. Coal liquefaction will probably not be competitive, but coal gasification may play an important role after the year 2000. Nuclear power will be important in the east. However, a "no-new-nuclear" policy after 1985 would have negligible cost, but would force a switch in the east from electricity to oil with the tar sands playing an important role after the turn of the century. District heating by cogeneration with nuclear electricity in the east may increase nuclear safety by reducing reliance on nuclear power through the partial displacement of electric resistance heating. The electric automobile will probably not be competitive unless there are technical breakthroughs which lower the initial cost difference between the conventional and electric automobiles, or the road tax burden is less for electric than for conventional cars.
What to Expect from Transiting Multiplanet Systems
Creators: name: Fabrycky, Daniel C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: So far radial velocity (RV) measurements have discovered ~25 stars to host multiple planets. The statistics imply that many of the known hosts of transiting planets should have additional planets, yet none have been solidly detected. They will be soon, via complementary search methods of RV, transit-time variations (TTV) of the known planet, and transits of the additional planet. When they are found, what can transit measurements add to studies of multiplanet dynamical evolution? First, mutual inclinations become measurable, for comparison to the solar system's disk-like configuration. Such measurements will give important constraints to planet-planet scattering models, just as the RV measurements of eccentricity have done. Second, the Rossiter-McLaughlin effect measures stellar obliquity, which can be modified by two-planet dynamics with a tidally evolving inner planet. Third, TTV is exquisitely sensitive to planets in mean motion resonance. Two planets differentially migrating in the disk can establish such resonances, and tidal evolution of the planets can break them, so the configuration and frequency of these resonances as a function of planetary parameters will constrain these processes.
description: To appear in the Proceedings of the 253rd IAU Symposium: "Transiting Planets", May 2008, Cambridge, MA. 7 pages, 3 figures
Combined Hydrothermal Liquefaction of Polyurethane and Lignocellulosic Biomass for improved carbon recovery
Creators: name: Passos, Juliano Souza dos
name: Chiaberge, Stefano
name: Biller, Patrick
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Due to the high versatility of Polyurethane (PUR), its share amongst synthetic polymers to manufacture consumer goods is increasing. This study proposes, tests and validates through pilot processing a highly efficient method for carbon recovery of PUR and in the form of an oil phase concentrated in carbon using hydrothermal liquefaction (HTL). Hot liquid water mixed with PUR residues and a lignocellulosic material (two species of Miscanthus) were treated at subcritical water temperatures, generating an oil-phase rich in hydrocarbons. A high synergistic effect in the co-liquefaction was observed, leading to a carbon and chemical energy recovery to the oil of 71 and 75% respectively. Pilot plant processing, using optimized process parameters, yielded a total process efficiency, accounting heating utilities, of 61%, resulting in a 3.2 ratio of energy return over investment. Using spectroscopic and high-resolution mass spectrometry analysis the oil revealed a high content of nitrogen hetero aromatic and polyol compounds. The high synergy observed for the co-liquefaction of PUR and miscanthus is attributed to recombination of synthetic and biological materials, specifically due to aromatics present in the media and nitrogen-containing compounds recombination. The results show that HTL can be an efficient method for carbon recovery of PUR aided by biomass.
title: Digitale Archäologie in einer sozialen Dimension
title: Überlegungen zu sozialer Inklusion und Open Science in der digitalarchäologischen Praxis
titleType: Subtitle
Creators: name: Hagmann, Dominik
Publisher: name: Universität Salzburg, Fachbereich Altertumswissenschaften
Year: 2020
Subjects: Digitale Archäologie
Langzeitarchivierung
Open Access
Open Science
Digital Archaeology
Accessibility
Long term archiving
ÖFOS 2012, Classical archaeology
ÖFOS 2012, Klassische Archäologie
ÖFOS 2012, Virtual archeology
ÖFOS 2012, Virtuelle Archäologie
ÖFOS 2012, Digital humanities
ÖFOS 2012, Digital Humanities

description: Dieser Beitrag plädiert dafür, dass ein möglichst offen gehandhabter Zugang zur Digitalen Archäologie die Möglichkeit offeriert, die Nachteile digitalarchäologischer Arbeit – etwa das Entstehen einer digitalen Kluft oder auch der Anbruch eines dunklen digitalen Zeitalters – auszuräumen. Es wird vorgeschlagen, im Sinne von Open Science und einer möglichst weitgehenden Accessibility zu Daten im Zuge der archäologischen Arbeit, nicht nur exklusiv auf wissenschaftlich/technische, sondern vielmehr inklusiv auch auf „soziale“ Parameter zu achten. Der Beitrag möchte so darauf hinweisen, dass eine „Inklusive Digitale Archäologie“ in einer engen Beziehung zur allgemeinen Barrierefreiheit steht und „wirkliche“ Open Science erst durch den Abbau der technischen wie auch der sozialen Barrieren betrieben werden kann.
description: This paper argues that only the most open approach to digital archaeology offers the possibility of dispelling the disadvantages of integrating information and communication technologies and archaeology, such as a digital divide or a digital dark age. In the sense of practicing open science and providing access to as much data as possible in archaeology it is proposed not only to pay attention exclusively to scientific/technical, but also inclusively to ‘social’ parameters. The paper aims to point out that an ‘inclusive digital archaeology’ is closely related to accessibility and that pure open science can only be reached by reducing the technical as well as the social barriers.
description: Alle Rechte vorbehalten.
Purity estimation from differentially methylated sites using Illumina Infinium methylation microarray data
Creators: name: Azim, Riasat
name: Wang, Shulin
name: Zhou, Su
name: Zhong, Xing
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Developmental Biology
subject: Cancer
subject: Science Policy

description: Solid tissues collected from patient-driven clinical settings are composed of both normal and cancer cells, which often precede complications in data analysis and epigenetic findings. The Purity estimation of samples is crucial for reliable genomic aberration identification and uniform inter-sample and inter-patient comparisons as well. Here, an effective and flexible method has been developed and designed to estimate the level of methylation, which infers tumor purity without prior knowledge from the other datasets. The comprehensive analysis of our approach on Illumina Infinium 450 k methylation microarray explains that TCGA Breast Cancer data exhibits improved performance for purity assessment. This assessment has a strong correlation with other advanced methods.
Depletion of lncRNA MALAT1 inhibited sunitinib resistance through regulating miR-362-3p-mediated G3BP1 in renal cell carcinoma
Creators: name: Wang, Zhujuan
name: Chang, Xiong
name: Zhu, Guannan
name: Gao, Xiaoting
name: Chang, Luyuan
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: Hematology
subject: Plant Biology
subject: 60506 Virology

description: Long non-coding RNA metastasis associated with lung adenocarcinoma transcript 1 (MALAT1) contributes to chemotherapy resistance in some cancers, but the role of MALAT1 in sunitinib (SU) chemoresistance of carcinoma (RCC) is still unknown. In this study, MALAT1 expression in SU-resistance tumor tissues and cells was tested by qRT-PCR. Then, CCK-8, Annexin V-FITC/PI, transwell, and Western blotting assays were used to evaluate cell viability and IC50, apoptosis, cell invasion, and resistance of SU-resistance RCC cells after transfected with small interfering RNA against MALAT1. Further, RNA pull-down and luciferase reporter assay were applied to investigate the underlying mechanism of MALAT1 in SU resistance. The results showed that MALAT1 expression was dramatically upregulated in SU-resistance RCC tissues and cell lines. Knockdown of MALAT1 inhibited proliferation, invasion, and SU chemoresistance, but induced apoptosis in RCC cells. The results of RNA pull-down and luciferase reporter assay indicated that MALAT1 could interact with miR-362-3p and miR-362-3p interact with RasGAP SH3-domain-Binding Protein 1 (G3BP1). Moreover, G3BP1 also played a role in SU chemoresistance of RCC cells, and MALAT1 could perform as a miR-362-3p sponge to modulate G3BP1 expression. Rescue experiments suggested that downregulation of miR-362-3p and overexpression of G3BP1 can reverse the SU chemosensitivity of MALAT1 knockdown in RCC cells. In conclusion, depletion of LncRNA MALAT1 inhibited SU chemoresistance through modulating G3BP1 via sponging miR-362-3p in RCC cells, suggesting that targeting MALAT1 may be a potential therapeutic strategy for SU-resistance RCC.
Community structures and role detection in music networks
Creators: name: Teitelbaum, T.
name: Balenzuela, P.
name: Cano, P.
name: Buldu, J. M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: We analyze the existence of community structures in two different social networks obtained from similarity and collaborative features between musical artists. Our analysis reveals some characteristic organizational patterns and provides information about the driving forces behind the growth of the networks. In the similarity network, we find a strong correlation between clusters of artists and musical genres. On the other hand, the collaboration network shows two different kinds of communities: rather small structures related to music bands and geographic zones, and much bigger communities built upon collaborative clusters with a high number of participants related through the period the artists were active. Finally, we detect the leading artists inside their corresponding communities and analyze their roles in the network by looking at a few topological properties of the nodes.
description: 14 pages 7 figures
Density probability distribution functions of diffuse gas in the Milky Way
Creators: name: Berkhuijsen, E. M.
name: Fletcher, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In a search for the signature of turbulence in the diffuse interstellar medium in gas density distributions, we determined the probability distribution functions (PDFs) of the average volume densities of the diffuse gas. The densities were derived from dispersion measures and HI column densities towards pulsars and stars at known distances. The PDFs of the average densities of the diffuse ionized gas (DIG) and the diffuse atomic gas are close to lognormal, especially when lines of sight at |b|<5 degrees and |b|>=5 degrees are considered separately. The PDF of at high |b| is twice as wide as that at low |b|. The width of the PDF of the DIG is about 30 per cent smaller than that of the warm HI at the same latitudes. The results reported here provide strong support for the existence of a lognormal density PDF in the diffuse ISM, consistent with a turbulent origin of density structure in the diffuse gas.
description: 5 pages, 3 figures, accepted for publication in MNRAS Letters
Briefe von Alexander Conze an Johannes Vahlen aus den Jahren 1868 bis 1877
Creators: name: Krierer, Karl R.
Publisher: name: Wiener Beiträge zur Alten Geschichte online (WBAGon)
Year: 2020

description: In den Briefen Alexander Conzes an Johannes Vahlen aus dem Zeitraum 1868 bis 1877 geht es in den noch aus Halle abgesandten um Conzes zukünftige Professur an der Universität Wien und allerhand Fragen Conzes, die Vahlen ihm beantworten sollte; weiter sind Forderungen Conzes und Berufungszusagen Thema. In den Briefen aus Conzes Wiener Zeit dreht es sich hauptsächlich um Publikationen, um die universitäre Planung eines archäologischen Gipsmuseums, um Conzes Grabrelief-Projekt und die Samothrake-Grabung.
description: Wiener Beiträge zur Alten Geschichte online (WBAGon), Bd. 2 (2020): Akten des 17. Österreichischen Althistorikerinnen- und Althistorikertag, Wien 15.–17. November 2018
Decreti decurionali di età augusteo-tiberiana. Governo imperiale e città dell’Italia
Creators: name: Segenni, Simonetta
Publisher: name: Wiener Beiträge zur Alten Geschichte online (WBAGon)
Year: 2020

description: The paper analyses some decurional decrees from Italy with the scope to point out the political and administrative transformations that concerned Italian communities in the early decades of the Empire as a consequence of the evolution of the political form of the Roman state. L’articolo, che prende in analisi alcuni decreti decurionali provenienti dall’Italia, pone in risalto le trasformazioni politico-amministrative che interessarono le comunità italiche nei primi secoli dell’impero come conseguenza dell’avvento del principato.
description: Wiener Beiträge zur Alten Geschichte online (WBAGon), Bd. 3 (2020): Municipal Structures in Roman Spain and Roman Italy. A Comparison, Proceedings of the Colloquium Vienna, 3rd July 2018
Comitia municipales: el elector en su laberinto
Creators: name: Rodríguez Neila, Juan Francisco
Publisher: name: Wiener Beiträge zur Alten Geschichte online (WBAGon)
Year: 2020

description: This article explores the comitia, legal assemblies organized to elect the Roman municipal magistrates,with a focus on the election day, and other aspects directly affecting the citizens participating in the ballot. In particular the article considers three core elements of the comitia. First, the roles of the magistrate who ran the comitia (call of the assembly, taking the auspicia, and presidency of the contio). Second, the configuration of the electoral body and its organization in civic units (curiae). Finally, the article discusses some specific elements of the voting process: the space where the comitia were held, the identification of the voters, the voting procedure, the maintenance of public order, and the controls to guarantee the transparency of the electoral system. Este trabajo estudia los comitia para elegir a los magistrados municipales romanos, pero centrándose en la jornada de votación, y más concretamente en algunas cuestiones que afectaban directamente a los ciudadanos que participaban. Tres son los principales asuntos que se consideran. Primero el importante papel del magistrado que dirigía los comitia (convocatoria de la asamblea, toma de auspicia, presidencia de la contio). En segundo lugar la configuración del cuerpo electoral y su organización en unidades cívicas (curiae). Finalmente se tratan algunos aspectos concretos del desarrollo de las votaciones: espacio físico donde tenían lugar los comitia, identificación de los electores, procedimiento para votar, orden público y controles para garantizar la limpieza del proceso electoral.
description: Wiener Beiträge zur Alten Geschichte online (WBAGon), Bd. 3 (2020): Municipal Structures in Roman Spain and Roman Italy. A Comparison, Proceedings of the Colloquium Vienna, 3rd July 2018
El ius Latii y la legislación municipal Flavia
Creators: name: García Fernández, Estela
Publisher: name: Wiener Beiträge zur Alten Geschichte online (WBAGon)
Year: 2020

description: This paper analyses the relation between ius Latii and municipal legislation. It will include a critical appraisal of the various interpretations currently in use on this issue, and two main ideas are defended. On the one hand, the municipalising capacity of the ius Latii and the existence of a provincial Latin condicio. On the other hand, Flavian municipal laws served primarily both the administrative reorganisation of the municipalities and the enhancement of jurisdictional empowerment at the local level. Finally, there is no evidence to demonstrate a causal relation between the process than turned a peregrine civitas into a municipium (requiring little legal engineering and very few pre-requisites for the affected community), and the later, much more complex, legislative codifications that are the municipal laws. El presente trabajo analiza la relación entre el ius Latii y la legislación municipal. Se realiza una exposición crítica de las distintas interpretaciones actuales sobre el tema y se defienden dos ideas principales. Por un lado, la capacidad municipalizadora del ius Latii y la existencia de la latinidad ingenua provincial, y por otro que la reorganización administrativa del municipio y la ampliación de su autonomía jurisdiccional son las dos funciones principales de la legislación municipal flavia. Se defiende finalmente que no hay evidencias para establecer una relación causal y necesaria entre el proceso que convierte a una civitas peregrina en municipio (que requiere escasa maquinaria legal y pocos requisitos por parte de la comunidad afectada), y las posteriores y complejas codificaciones legislativas que son las leyes municipales.
description: Wiener Beiträge zur Alten Geschichte online (WBAGon), Bd. 3 (2020): Municipal Structures in Roman Spain and Roman Italy. A Comparison, Proceedings of the Colloquium Vienna, 3rd July 2018
I duoviri designati nell’amministrazione locale tra Spagna ed Italia
Creators: name: Gazzoli, Silvia
Publisher: name: Wiener Beiträge zur Alten Geschichte online (WBAGon)
Year: 2020

description: In the epigraphic documentation concerning municipia and Roman colonies there are several attestations of magistrates defined as designati. This contribution will focus on the analysis of inscriptions, found in the Iberian peninsula and in Roman Italy, concerning duoviri designati. The particularity of these testimonies is given not only by the reference to the duovirate but also to evergetic donations or dedications, which took place in a presumably extremely short period of time. Nella documentazione epigrafica concernente le colonie di cittadinanza romana ed i municipi si contano diverse attestazioni di magistrati definiti come designati. Questo contributo si concentrerà sull’analisi della documentazione epigrafica, rinvenuta nella penisola iberica e nel territorio italico, legata ad una problematica relativa ai cosiddetti duoviri designati. La particolarità di queste testimonianze è data non solo dalla citazione di questa formula nell’elencazione delle cariche rivestite dal cittadino, ma anche dalla presenza riferimenti ad atti, quali donazioni evergetiche o dediche, che ebbero luogo in un arco di tempo presumibilmente estremamente breve.
description: Wiener Beiträge zur Alten Geschichte online (WBAGon), Bd. 3 (2020): Municipal Structures in Roman Spain and Roman Italy. A Comparison, Proceedings of the Colloquium Vienna, 3rd July 2018
Fermionization of a strongly interacting Bose-Fermi mixture in a one-dimensional harmonic trap
Creators: name: Fang, Bess Yiyuan
name: Vignolo, Patrizia
name: Miniatura, Christian
name: Minguzzi, Anna
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We consider a strongly interacting one-dimensional (1D) Bose-Fermi mixture confined in a harmonic trap. It consists of a Tonks-Girardeau (TG) gas (1D Bose gas with repulsive hard-core interactions) and of a non-interacting Fermi gas (1D spin-aligned Fermi gas), both species interacting through hard-core repulsive interactions. Using a generalized Bose-Fermi mapping, we determine the exact particle density profiles, momentum distributions and behaviour of the mixture under 1D expansion when opening the trap. In real space, bosons and fermions do not display any phase separation: the respective density profiles extend over the same region and they both present a number of peaks equal to the total number of particles in the trap. In momentum space the bosonic component has the typical narrow TG profile, while the fermionic component shows a broad distribution with fermionic oscillations at small momenta. Due to the large boson-fermion repulsive interactions, both the bosonic and the fermionic momentum distributions decay as $C p^{-4}$ at large momenta, like in the case of a pure bosonic TG gas. The coefficient $C$ is related to the two-body density matrix and to the bosonic concentration in the mixture. When opening the trap, both momentum distributions "fermionize" under expansion and turn into that of a Fermi gas with a particle number equal to the total number of particles in the mixture.
description: revised version; 8 pages, 7 figures
Varying Alpha: New Constraints from Seasonal Variations
Creators: name: Barrow, John D.
name: Shaw, Douglas J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We analyse the constraints obtained from new atomic clock data on the possible time variation of the fine structure `constant' and the electron-proton mass ratio and show how they are strengthened when the seasonal variation of Sun's gravitational field at the Earth's surface is taken into account. We compare these bounds with those obtainable from tests of the Weak Equivalence Principle and high-redshift observations of quasar absorption spectra consistent with time variations in the fine structure constant.
description: 4 pages, 1 figure