cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Photoionization cross section calculations for the halogen-like ions Kr$^+$ and Xe$^+$
Creators: name: McLaughlin, B. M.
name: Ballance, C. P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Photoionization cross sections calculations on the halogen-like ions; Kr$^+$ and Xe$^+$ have been performed for a photon energy range from each ion threshold to 15 eV, using large-scale close-coupling calculations within the Dirac-Coulomb R-matrix approximation. The results from our theoretical work are compared with recent measurements made at the ASTRID merged-beam set-up at the University of Aarhus in Denmark and from the Fourier transform ion cyclotron resonance (FT-ICR) trap method at the SOLEIL synchrotron radiation facility in Saint-Aubin, France and the Advanced Light Soure (ALS). For each of these complex ions our theoretical cross section results over the photon energy range investigated are seen to be in excellent agreement with experiment. Resonance energy positions and quantum defects of the prominent Rydberg resonances series identified in the spectra are compared with experiment for these complex halogen like-ions.
description: Accepted for publication
Triangulated quotient categories
Creators: name: Liu, Yu
name: Zhu, Bin
Publisher: name: arXiv
Year: 2012
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: A notion of mutation of subcategories in a right triangulated category is defined in this paper. When (Z,Z) is a D-mutation pair in a right triangulated category C, the quotient category Z/D carries naturally a right triangulated structure. More-over, if the right triangulated category satisfies some reasonable conditions, then the right triangulated quotient category Z/D becomes a triangulated category. When C is triangulated, our result unifies the constructions of the quotient triangulated categories by Iyama-Yoshino and by Jørgensen respectively.
description: 18 pages
Spectator matter fragmentation in Au+Au reactions: Phase space analysis
Creators: name: Vermani, Yogesh K.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Clusterization in phase space has been analyzed for peripheral Au+Au reactions at 1000 AMeV using simulated annealing clusterization algorithm (SACA). We investigate how these fragments are correlated in phase space and compare our model calculations with minimum spanning tree (MST) method. Our theoretical study highlights the importance of binding energy criterion in recognizing the fragment structure. MST method however, fails to break-up the spectator matter effectively and thus under-estimates the multiplicity of intermediate mass fragments (IMFs).
description: 2 pages, 2 figures
Ausstellungskalender
Creators: name: Redaktion, Die
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2020

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 25 Nr. 9 (1972): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Star Formation & Young Stellar Content in the W3 GMC
Creators: name: Rivera-Ingraham, A.
name: Martin, P. G.
name: Polychroni, D.
name: Moore, T. J. T.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In this work we have carried out an in-depth analysis of the young stellar content in the W3 GMC. The YSO population was identified and classified in the IRAC/MIPS color-magnitude space according to the `Class' scheme and compared to other classifications based on intrinsic properties. Class 0/I and II candidates were also compared to low/intermediate-mass pre-main-sequence stars selected through their colors and magnitudes in 2MASS. We find that a reliable color/magnitude selection of low-mass PMS stars in the infrared requires prior knowledge of the protostar population, while intermediate mass objects can be more reliably identified. By means of the MST algorithm and our YSO spatial distribution and age maps we investigated the YSO groups and the star formation history in W3. We find signatures of clustered and distributed star formation in both triggered and quiescent environments. The central/western parts of the GMC are dominated by large scale turbulence likely powered by isolated bursts of star formation that triggered secondary star formation events. Star formation in the eastern high density layer also shows signs of extended periods of star formation. While our findings support triggering as a key factor for inducing and enhancing some of the major star forming activity in the HDL (e.g., W3 Main/W3(OH)), we argue that some degree of quiescent or spontaneous star formation is required to explain the observed YSO population. Our results also support previous studies claiming an spontaneous origin for the isolated massive star(s) powering KR 140.
description: Accepted for publication in ApJ
On the unconstrained expansion of a spherical plasma cloud turning collisionless : case of a cloud generated by a nanometer dust grain impact on an uncharged target in space
Creators: name: Pantellini, F
name: Landi, Simone
name: Zaslavsky, Arnaud
name: Meyer-Vernet, Nicole
Publisher: name: arXiv
Year: 2012
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Nano and micro meter sized dust particles travelling through the heliosphere at several hundreds of km/s have been repeatedly detected by interplanetary spacecraft. When such fast moving dust particles hit a solid target in space, an expanding plasma cloud is formed through the vaporisation and ionisation of the dust particles itself and part of the target material at and near the impact point. Immediately after the impact the small and dense cloud is dominated by collisions and the expansion can be described by fluid equations. However, once the cloud has reached micro-m dimensions, the plasma may turn collisionless and a kinetic description is required to describe the subsequent expansion. In this paper we explore the late and possibly collisionless spherically symmetric unconstrained expansion of a single ionized ion-electron plasma using N-body simulations. Given the strong uncertainties concerning the early hydrodynamic expansion, we assume that at the time of the transition to the collisionless regime the cloud density and temperature are spatially uniform. We do also neglect the role of the ambient plasma. This is a reasonable assumption as long as the cloud density is substantially higher than the ambient plasma density. In the case of clouds generated by fast interplanetary dust grains hitting a solid target some 10^7 electrons and ions are liberated and the in vacuum approximation is acceptable up to meter order cloud dimensions. ...
Figures S1-S10 from Evolutionary trade-offs between testes size and parenting in Neotropical glassfrogs
Creators: name: Valencia-Aguilar, Anyelet
name: Ringler, Eva
name: Lüpold, Stefan
name: Guayasamin, Juan M.
name: Prado, Cynthia P.
Publisher: name: The Royal Society
Year: 2024
Subjects: classificationCode: 310399
subject: Ecology not elsewhere classified
classificationCode: 310499
subject: Evolutionary biology not elsewhere classified
classificationCode: 310901
subject: Animal behaviour

description: Distribution of the bootstrapped standardized coefficient of each predictor and of the phylogenetic.
S-parameter at Non-Zero Temperature and Chemical Potential
Creators: name: Søndergaard, Ulrik Ishøj
name: Pica, Claudio
name: Sannino, Francesco
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute the finite-temperature and matter density corrections to the S-parameter at the one loop level. At non-zero temperature T and matter density Lorentz symmetry breaks and therefore we suggest a suitable generalization of the S-parameter. By computing the plasma correction, we discover a reduction of the S-parameter in the physically relevant region of small external momenta for any non-zero chemical potential and T. In particular, the S-parameter vanishes at small m/T, where m is the mass of the fermions, due to the finite extent of the temporal direction. Our results are directly applicable to the determination of the S-parameter via first principle lattice simulations performed with anti-periodic boundary conditions in the temporal direction.
description: 8 pages, 8 figures
Renormalization group contraction of tensor networks in three dimensions
Creators: name: Garcia-Saez, A.
name: Latorre, J. I.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a new strategy for contracting tensor networks in arbitrary geometries. This method is designed to follow as strictly as possible the renormalization group philosophy, by first contracting tensors in an exact way and, then, performing a controlled truncation of the resulting tensor. We benchmark this approximation procedure in two dimensions against an exact contraction. We then apply the same idea to a three dimensional system. The underlying rational for emphasizing the exact coarse graining renormalization group step prior to truncation is related to monogamy of entanglement.
description: 5 pages, 8 figures
Discovery of Cesium, Lanthanum, Praseodymium and Promethium Isotopes
Creators: name: May, E.
name: Thoennessen, M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Currently, forty-one cesium, thirty-five lanthanum, thirty-two praseodymium, and thirty-one promethium, isotopes have been observed and the discovery of these isotopes is discussed here. For each isotope a brief synopsis of the first refereed publication, including the production and identification method, is presented.
description: To be published in At. Data. Nucl. Data Tables
title: Expeditia.info
title: a visualisation tool for Research Expeditions using Linked Open Data
titleType: Subtitle
Creators: name: Santos, Joaquim
Publisher: name: Zenodo
Year: 2025

description: Wikidata is an open knowledge base used to describe entities in a structured way. Since its inception in 2012, a myriad of entries on multiple fields have been created by the community. Research Expeditions can be described with several properties indicating important information about them, such as start time, end time, start point, destination point, itinerary (via), participants, etc.

A web application was built to query wikidata for research expeditions details and display itineraries on a map, making a visualisation of the trip: https://www.expeditia.info.

Plus, it also queries GBIF (www.gbif.org) to get information about natural history specimens that were collected during the expedition, and display on the map the point where they were collected, along with images of the specimens and its basic information. The platform Bionomia (www.bionomia.net) is used as a broker to know the specimens collected by expedition participants that were collected between the expedition dates.

The current state of the tool is “proof of concept”, but more developments are planned to enhance the efficiency of data retrieval and increase de amount of data displayed.
Precision Measurements on a Tunable Mott Insulator of Ultracold Atoms
Creators: name: Mark, M. J.
name: Haller, E.
name: Lauber, K.
name: Danzl, J. G.
name: Daley, A. J.
name: Nägerl, H. -C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We perform precision measurements on a Mott-insulator quantum state of ultracold atoms with tunable interactions. We probe the dependence of the superfluid-to-Mott-insulator transition on the interaction strength and explore the limits of the standard Bose-Hubbard model description. By tuning the on-site interaction energies to values comparable to the interband separation, we are able to quantitatively measure number-dependent shifts in the excitation spectrum caused by effective multi-body interactions.
description: 4 pages, 4 figures
Quantifying loopy network architectures
Creators: name: Katifori, Eleni
name: Magnasco, Marcelo O.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Biology presents many examples of planar distribution and structural networks having dense sets of closed loops. An archetype of this form of network organization is the vasculature of dicotyledonous leaves, which showcases a hierarchically-nested architecture containing closed loops at many different levels. Although a number of methods have been proposed to measure aspects of the structure of such networks, a robust metric to quantify their hierarchical organization is still lacking. We present an algorithmic framework, the hierarchical loop decomposition, that allows mapping loopy networks to binary trees, preserving in the connectivity of the trees the architecture of the original graph. We apply this framework to investigate computer generated graphs, such as artificial models and optimal distribution networks, as well as natural graphs extracted from digitized images of dicotyledonous leaves and vasculature of rat cerebral neocortex. We calculate various metrics based on the Asymmetry, the cumulative size distribution and the Strahler bifurcation ratios of the corresponding trees and discuss the relationship of these quantities to the architectural organization of the original graphs. This algorithmic framework decouples the geometric information (exact location of edges and nodes) from the metric topology (connectivity and edge weight) and it ultimately allows us to perform a quantitative statistical comparison between predictions of theoretical models and naturally occurring loopy graphs.
description: 17 pages, 8 figures. During preparation of this manuscript the authors became aware of the work of Mileyko at al., concurrently submitted for publication
X-ray Observations of a New Unusual Magnetar Swift J1834.9-0846
Creators: name: Kargaltsev, Oleg
name: Kouveliotou, Chryssa
name: Pavlov, George G.
name: Gogus, Ersin
name: Lin, Lin
name: Wachter, Stefanie
name: Griffith, Roger L.
name: Kaneko, Yuki
name: Younes, George
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present X-ray observations of the new transient magnetar Swift J1834.9-0846, discovered with Swift BAT on 2011 August 7. The data were obtained with Swift, RXTE, CXO, and XMM-Newton both before and after the outburst. Timing analysis reveals singe peak pulsations with a period of 2.4823 s and an unusually high pulsed fraction, 85+/-10%. Using the RXTE and CXO data, we estimated the period derivative, dot{P}=8\times 10^{-12} s/s, and confirmed the high magnetic field of the source, B=1.4\times 10^{14} G. The decay of the persistent X-ray flux, spanning 48 days, is consistent with a power law, t^{-0.5}. In the CXO/ACIS image, we find that the highly absorbed point source is surrounded by extended emission, which most likely is a dust scattering halo. Swift J1834.9-0846 is located near the center of the radio supernova remnant W41 and TeV source HESS J1834-087. An association with W41 would imply a source distance of about 4 kpc; however, any relation to the HESS source remains unclear, given the presence of several other candidate counterparts for the latter source in the field. Our search for an IR counterpart of Swift J1834.9-0846 revealed no source down to K_s=19.5 within the 0.6' CXO error circle.
description: 32 pages, 13 figures, 3 tables; submitted to ApJ
Introduction: Conservatisme et Progressisme en éducation: approches critiques et éclairages internationaux
Creators: name: Robert, André D.
Publisher: name: Revista Lusófona de Educação
Year: 2019

description: Apresentação do Dossier temático sobre conservadorismo e progressismo na educação
description: Revista Lusófona de Educação, v. 43 n. 43 (2019): REVISTA LUSÓFONA DE EDUCAÇÃO
Measurement of event shapes at large momentum transfer with the ATLAS detector in pp collisions at sqrt(s) = 7 TeV
Creators: name: ATLAS Collaboration
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A measurement of event shape variables is presented for large momentum transfer proton-proton collisions using the ATLAS detector at the Large Hadron Collider. Six event shape variables calculated using hadronic jets are studied in inclusive multi-jet events in 35 pb^-1 of integrated luminosity at a center-of-mass energy of sqrt(s) = 7 TeV. These measurements are compared to predictions by three Monte Carlo event generators containing leading-logarithmic parton showers matched to leading order matrix elements for 2 to 2 and 2 to n (n=2,...6) scattering. Measurements of the third-jet resolution parameter, aplanarity, thrust, sphericity, and transverse sphericity are generally well described. The mean value of each event shape variable is evaluated as a function of the average momentum of the two leading jets pT1 and pT2, with a mean pT approaching 1 TeV.
description: 11 pages plus author list (25 pages total), 3 figures, submitted to European Physical Journal C
The resonance method for large character sums
Creators: name: Hough, Bob
Publisher: name: arXiv
Year: 2011
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: We consider the size of large character sums, proving new lower bounds for the quantity $Δ(N,q) = \sup_{χ\neq χ_0 mod q} |\sum_{n < N} χ(n)|$ for almost all ranges of $N$. The results are proven using the resonance method and saddle point analysis.
PARADOJAS DE LA CULTURA
Creators: name: MOLINA BUSTOS, FRANCISCO FABIANY
Publisher: name: Zenodo
Year: 2025

description: ste documento analiza las paradojas inherentes a la cultura desde una perspectiva interdisciplinaria, explorando las tensiones y contradicciones que surgen en la construcción de significados en distintos contextos sociales. A través de un enfoque teórico y empírico, se examinan fenómenos como la coexistencia de valores opuestos, la resistencia y apropiación cultural, y los desafíos de la globalización en la identidad colectiva.

La investigación aborda la cultura no como un ente homogéneo, sino como un campo dinámico de negociación y disputa, donde múltiples actores contribuyen a la formación de representaciones simbólicas. Asimismo, se exploran las formas en que la cultura se manifiesta en prácticas económicas, políticas y comunicativas, destacando su papel en la configuración del poder y las estructuras sociales.

El estudio se fundamenta en marcos teóricos provenientes de la antropología, la sociología, la filosofía y la economía, proporcionando un análisis integral de las contradicciones culturales contemporáneas. Además, se examinan casos específicos que ilustran cómo las paradojas culturales impactan la vida cotidiana, el consumo, las identidades individuales y colectivas, y las dinámicas de inclusión y exclusión social.

Este documento es un recurso valioso para investigadores, académicos y profesionales interesados en comprender las complejidades de la cultura en el siglo XXI, ofreciendo herramientas analíticas para interpretar sus múltiples dimensiones y efectos en la sociedad.
Linguistique et modèles cognitifs
Creators: name: Lüdi, Georges
name: Zuber, Claude-Anne
name: Desclés, Jean-Paul
name: Seiler, Hansjakob
name: Langacker, Ronald W.
name: Dubois, Danièle
name: Wildgen, Wolfgang
name: Talmy, Leonard
name: Pottier, Bernard
name: -, -
Publisher: name: emono
Year: 2017

description: Copyright © Romanisches Seminar der Universitat Basel 1995
La novela española moderna
Creators: name: Colón, Germán
name: Brandenberger, Tobias
name: Kunz, Marco
name: Latácz, Joachim
name: Vilanova, Antonio
name: Sánchez, Yvette
name: Andres-Suárez, Irene
name: Martín Gaite, Carmen
Publisher: name: emono
Year: 2017

description: Copyright © Romanisches Seminar der Universitát Basel 1994
Sémantique et représentations
Creators: name: Pekarek, Simona
name: Lüdi, Georges
name: Häcki Buhofer, Annelies
name: Gréciano, Gertrud
name: Hegedüs, Claudia
name: Drillon, Marie-Laurence
name: Hoffmann, Bernadette
name: Theissen, Anne
name: Benninger, Céline
name: Biermann Fischer, Michèle
name: Crévenat-Werner, Danielle
name: Fènoglio, Irène
name: Schumacher, René
Publisher: name: emono
Year: 2017

description: Copyright © Romanisches Seminar der Universität Basel 1995
The young stellar cluster [DBS2003] 157 associated with the H II region GAL 331.31-00.34
Creators: name: Pinheiro, Marcio C.
name: Abraham, Zulema
name: Copetti, Marcus V. F.
name: Ortiz, Roberto
name: Falceta-Gonçalves, Diego A.
name: Roman-Lopes, Alexandre
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report a study of the stellar content of the Near-infrared cluster [DBS2003]\,157 embedded in the extended H\,{\sc ii} region GAL\,331.31-00.34, which is associated with the IRAS source 16085-5138. $JHK$ photometry was carried out in order to identify potential ionizing candidates, and the follow-up NIR spectroscopy allowed the spectral classification of some sources, including two O-type stars. A combination of NIR photometry and spectroscopy data was used to obtain the distance of these two stars, with the method of spectroscopic parallax: IRS\,298 (O6\,{\sc V}, $3.35 \pm 0.61$\,kpc) and IRS\,339 (O9\,{\sc V}, $3.24 \pm 0.56$\,kpc). Adopting the average distance of $3.29 \pm 0.58$\,kpc and comparing the Lyman continuum luminosity of these stars with that required to account for the radio continuum flux of the H\,{\sc ii} region, we conclude that these two stars are the ionizing sources of GAL\,331.31-00.34. Young stellar objects (YSOs) were searched by using our NIR photometry and MIR data from the GLIMPSE survey. The analysis of NIR and MIR colour-colour diagrams resulted in 47 YSO candidates. The GLIMPSE counterpart of IRAS\,16085-5138, which presents IRAS colour indices compatible with an ultra-compact H\,{\sc ii} region, has been identified. The analysis of its spectral energy distribution between 2 and $100\,μ$m revealed that this source shows a spectral index $α= 3.6$ between 2 and $25\,μ$m, which is typical of a YSO immersed in a protostellar envelope. Lower limits to the bolometric luminosity and the mass of the embedded protostar have been estimated as $L=7.7\times10^3L_{\sun}$ and $M = 10\,M_{\sun}$, respectively, which corresponds to a B0--B1\,{\sc V} ZAMS star.
description: The paper contains 11 figures and 5 tables. Accepted for publication in MNRAS
Chemical Bonds and Spin State Splittings in Spin Crossover Complexes. A DFT and QTAIM Analysis
Creators: name: Paulsen, Hauke
name: Wolny, Juliusz Adam
name: Trautwein, Alfred Xaver
Publisher: name: arXiv
Year: 2012
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Density functional theory (DFT) calculations have been performed for the high-spin (HS) and low-spin (LS) isomers of a series of iron(II) spin crossover complexes with nitrogen ligands. The calculated charge densities have been analyzed in the framework of the quantum theory of atoms in molecules (QTAIM). For a number of iron(II) complexes with substituted tris(pyrazolyl) ligands the energy difference between HS and LS isomers, the spin state splitting, has been decomposed into atomic contributions in order to rationalize changes of the spin state splitting due to substituent effects.
Colloquium zu Ehren von Germán Colón. Acta - Atti - Actes - Actas - Actes
Creators: name: Terzoli, Maria Antonietta
name: Santa Eugenia, Francisco Javier
name: Ramírez, Pedro
name: Brandenberger, Tobias
name: Kunz, Marco
name: Sánchez, Yvette
name: Schmid, Beatrice
name: Lurati, Ottavio
name: Lüdi, Georges
name: Badia i Margarit, Antoni M.
Publisher: name: emono
Year: 2017

description: Copyright © Romanisches Seminar der Universität Basel 1998
Effect of Dust on Lyman-alpha Photon Transfer in Optically Thick Halo
Creators: name: Yang, Yang
name: Roy, Ishani
name: Shu, Chi-Wang
name: Fang, Li-Zhi
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate the effects of dust on Lyα photons emergent from an optically thick medium by solving the integro-differential equation of the radiative transfer of resonant photons. To solve the differential equations numerically we use the Weighted Essentially Non-oscillatory method (WENO). Although the effects of dust on radia-tive transfer is well known, the resonant scattering of Lyα photons makes the problem non-trivial. For instance, if the medium has the optical depth of dust absorption and scattering to be τa>>1, τ>>1, and τ>>τa, the effective absorption optical depth in a random walk scenario would be equal to \surd τa(τa+τ). We show, however, that for a resonant scattering at frequency ν0, the effective absorption optical depth would be even larger than τ(ν0). If the cross section of dust scattering and absorption is frequency-independent, the double-peaked structure of the frequency profile given by the resonant scattering is basically dust-independent. That is, dust causes neither narrowing nor widening of the width of the double peaked profile. One more result is that the time scales of the Lyα photon transfer in the optically thick halo are also basically independent of the dust scattering, even when the scattering is anisotropic. This is because those time scales are mainly determined by the transfer in the frequency space, while dust scattering, either isotropic or anisotropic, does not affect the behavior of the transfer in the frequency space when the cross section of scattering is wavelength-independent. This result does not support the speculation that dust will lead to the smoothing of the brightness distribution of Lyα photon source with optical thick halo.
description: 24 pages, 8 figures
Publishing without perishing. Are there such things as "research products"?
Creators: name: Pievatolo, Maria Chiara
Publisher: name: Zenodo
Year: 2015
Subjects: subject: Filosofia politica
subject: Political philosophy

description: At the end of Plato’s Phaedo, Socrates does not succeed in persuading Crito that the real Socrates is the Socrates who is now conversing and arranging the details of his argument, not the one whom he will soon see as a corpse. According to Ernst Cassirer, the philosopher is the one who knows how to die, by overcoming his individuality to participate in a universal conversation. Hence, while Crito’s Socrates has long become dust, Plato’s Socrates is still speaking to us: research is an unending process, not a competitive production of statical “research products”. If any research assessment is done à la Crito, by counting “products” and citations, academy may become so predatory and fraudulent that the difference between a respected scholar and an impostor faking his data would be just of degree, not of kind. And that the only viable route to open access, if any, would remain the grey road of administrative enforcement on scholars glad to be treated like zombies.
title: SRSF3 and SRSF7 modulate 3′UTR length through suppression or activation of proximal polyadenylation sites and regulation of CFIm levels
Creators: name: Schwich, Oliver Daniel
name: Blümel, Nicole
name: Keller, Mario
name: Wegener, Marius
name: Setty, Samarth Thonta
name: Brunstein, Melinda Elaine
name: Poser, Ina
name: Mozos, Igor Ruiz De Los
name: Suess, Beatrix
name: Münch, Christian
name: McNicoll, François
name: Zarnack, Kathi
name: Müller-McNicoll, Michaela
Publisher: name: BioMed Central
Year: 2024

description: Background: Alternative polyadenylation (APA) refers to the regulated selection of polyadenylation sites (PASs) in transcripts, which determines the length of their 3′ untranslated regions (3′UTRs). We have recently shown that SRSF3 and SRSF7, two closely related SR proteins, connect APA with mRNA export. The mechanism underlying APA regulation by SRSF3 and SRSF7 remained unknown.
 
Results: Here we combine iCLIP and 3′-end sequencing and find that SRSF3 and SRSF7 bind upstream of proximal PASs (pPASs), but they exert opposite effects on 3′UTR length. SRSF7 enhances pPAS usage in a concentration-dependent but splicing-independent manner by recruiting the cleavage factor FIP1, generating short 3′UTRs. Protein domains unique to SRSF7, which are absent from SRSF3, contribute to FIP1 recruitment. In contrast, SRSF3 promotes distal PAS (dPAS) usage and hence long 3′UTRs directly by counteracting SRSF7, but also indirectly by maintaining high levels of cleavage factor Im (CFIm) via alternative splicing. Upon SRSF3 depletion, CFIm levels decrease and 3′UTRs are shortened. The indirect SRSF3 targets are particularly sensitive to low CFIm levels, because here CFIm serves a dual function; it enhances dPAS and inhibits pPAS usage by binding immediately downstream and assembling unproductive cleavage complexes, which together promotes long 3′UTRs.
 
Conclusions: We demonstrate that SRSF3 and SRSF7 are direct modulators of pPAS usage and show how small differences in the domain architecture of SR proteins can confer opposite effects on pPAS regulation.
La novela policíaca en la Península Ibérica
Creators: name: Schmid, Beatrice
name: Ollé, Montserrat
name: Brandenberger, Tobias
name: Kunz, Marco
name: Sánchez, Yvette
name: Vanoncini, André
name: Tyras, Georges
name: Frechilla Díaz, Emilio
name: Grossegesse, Orlando A. A.
name: Buschmann, Albrecht
name: Grubbe, Vibeke
name: Simó, Isabel-Clara
name: Ortiz, Lourdes
Publisher: name: emono
Year: 2017

description: Copyright © Romanisches Seminar der Universitát Basel 1998
Coexistence of antiferromagnetism and superconductivity within t-J model with strong correlations and nonzero spin polarization
Creators: name: Kaczmarczyk, Jan
name: Spałek, Jozef
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The coexistence of antiferromagnetism with superconductivity is studied theoretically within the t-J model with the Zeeman term included. The strong electron correlations are accounted for by means of the extended Gutzwiller projection method within a statistically-consistent approach proposed recently. The phase diagram on the band filling - magnetic field plane is shown, and subsequently the system properties are analyzed for the fixed band filling n=0.97. In this regime, the results reflect principal qualitative features observed recently in selected heavy fermion systems. Namely, (i) with the increasing magnetic field the system evolves from coexisting antiferromagnetic-superconducting phase, through antiferromagnetic phase, towards polarized paramagnetic state, and (ii) the onset of superconducting order suppresses partly the staggered moment. The superconducting gap has both the spin-singlet and the staggered-triplet components, a direct consequence of a coexistence of the superconducting state with antiferromagnetism.
description: 23 pages, 6 figures, accepted in Phys. Rev. B
Evidence for ultra-fast outflows in radio-quiet AGNs: III - location and energetics
Creators: name: Tombesi, F.
name: Cappi, M.
name: Reeves, J. N.
name: Braito, V.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Using the results of a previous X-ray photo-ionization modelling of blue-shifted Fe K absorption lines on a sample of 42 local radio-quiet AGNs observed with XMM-Newton, in this letter we estimate the location and energetics of the associated ultra-fast outflows (UFOs). Due to significant uncertainties, we are essentially able to place only lower/upper limits. On average, their location is in the interval ~0.0003-0.03pc (~10^2-10^4 r_s) from the central black hole, consistent with what is expected for accretion disk winds/outflows. The mass outflow rates are constrained between ~0.01-1 M_{\odot} yr^{-1}, corresponding to >5-10% of the accretion rates. The average lower-upper limits on the mechanical power are log\dot{E}_K~42.6-44.6 erg s^{-1}. However, the minimum possible value of the ratio between the mechanical power and bolometric luminosity is constrained to be comparable or higher than the minimum required by simulations of feedback induced by winds/outflows. Therefore, this work demonstrates that UFOs are indeed capable to provide a significant contribution to the AGN cosmological feedback, in agreement with theoretical expectations and the recent observation of interactions between AGN outflows and the interstellar medium in several Seyferts galaxies.
description: 5 pages, 3 figures, accepted for publication in MNRAS
Gravitational Waves of Jet Precession in Gamma-ray Bursts
Creators: name: Sun, Mou-Yuan
name: Liu, Tong
name: Gu, Wei-Min
name: Lu, Ju-Fu
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The physical nature of gamma-ray bursts (GRBs) are believed to involve an ultra-relativistic jet. The observed complex structure of light curves motivate the idea of jet precession. In this work, we study the gravitational waves of jet precession based on neutrino-dominated accretion disks around black holes, which may account for the central engine of GRBs. In our model, the jet and the inner part of the disk may precess along with the black hole, which is driven by the outer part of the disk. Gravitational waves are therefore expected to be significant from this black hole-inner disk precession system. By comparing our numerical results with the sensitivity of some detectors, we find that it is possible for DECIGO and BBO to detect such gravitational waves, particularly for GRBs in the Local Group.
description: 19 pages, 6 figures, accepted for publication in ApJ
Hierarchical ordering of reticular networks
Creators: name: Mileyko, Yuriy
name: Edelsbrunner, Herbert
name: Price, Charles A.
name: Weitz, Joshua S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: The structure of hierarchical networks in biological and physical systems has long been characterized using the Horton-Strahler ordering scheme. The scheme assigns an integer order to each edge in the network based on the topology of branching such that the order increases from distal parts of the network (e.g., mountain streams or capillaries) to the "root" of the network (e.g., the river outlet or the aorta). However, Horton-Strahler ordering cannot be applied to networks with loops because they they create a contradiction in the edge ordering in terms of which edge precedes another in the hierarchy. Here, we present a generalization of the Horton-Strahler order to weighted planar reticular networks, where weights are assumed to correlate with the importance of network edges, e.g., weights estimated from edge widths may correlate to flow capacity. Our method assigns hierarchical levels not only to edges of the network, but also to its loops, and classifies the edges into reticular edges, which are responsible for loop formation, and tree edges. In addition, we perform a detailed and rigorous theoretical analysis of the sensitivity of the hierarchical levels to weight perturbations. We discuss applications of this generalized Horton-Strahler ordering to the study of leaf venation and other biological networks.
description: 9 pages, 5 figures, During preparation of this manuscript the authors became aware of a related work by Katifori and Magnasco, concurrently submitted for publication
Time series of high resolution photospheric spectra in a quiet region of the Sun. I. Analysis of global and spatial variations of line parameters
Creators: name: Puschmann, K. G.
name: Vazquez, M.
name: Bonet, J. A.
name: Cobo, B. Ruiz
name: Hanslmeier, A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: A 50 min time series of one-dimensional slit-spectrograms, taken in quiet sun at disk center, observed at the German Vacuum Tower Telescope (Observatorio del Teide), was used to study the global and spatial variations of different line parameters. In order to determine the vertical structure of the photosphere two lines with well separated formation heights have been considered. The data have been filtered of p-modes to isolate the pure convective phenomenon. From our studies of global correlation coefficients and coherence and phase shift analyzes between the several line parameters, the following results can be reported. The convective velocity pattern preserves structures larger than 1.0" up to the highest layers of the photosphere (~ 435 km). However, at these layers, in the intensity pattern only structures larger than 2.0" are still connected with those at the continuum level although showing inverted brightness contrast. This confirms an inversion of temperature that we have found at a height of ~140 km. A possible evidence of gravity waves superimposed to the convective motions is derived from the phase shift analysis. We interpret the behavior of the full width at half maximum and the equivalent width as a function of the distance to the granular borders, as a consequence of enhanced turbulence and/or strong velocity gradients in the intergranular lanes.
description: 16 pages, 15 figures, 5 tables; Astronomy & Astrophysics, Volume 408, p.363-378, 2003
What VLT/VISIR told us about solid-carbon in protoplanetary disks
Creators: name: PANTIN Eric
name: LOPEZ Bruno
name: MATTER Alexis
name: HABART Emilie
name: TABONE, Benoit
name: JONES, Anthony
name: YSARD Nathalie
name: BOCCALETTI Anthony
name: PINTE Christophe
Publisher: name: Zenodo
Year: 2022
Subjects: Protoplanetary disks
mid-infrared observations
VLT/VISIR
dust carbon

description: Protoplanetary disks are the building factories for planets.
 Understanding their physical properties is a keystone to apprehend
 planet formation and explain exoplanets observed diversity.
 The disk around HD97048 is relatively peculiar : an exoplanet has been inferred from ALMA kinematic analysis; it displays the very rare signature of carbonaceous diamond nano-particles, and seems quite evolved as its radial strucuture shows a very wide inner cavity also as large gaps further out. It is a excellent laboratory to test the dust filtering process inferred for the formation of massive planets.
 We present a radiative model that reproduces the existing short wavelength (H/L bands) and ALMA observations. This model is then compared to existing VLT/VISIR imaging observations in order to constrain furthermore its structure and sub-um dust particles content.
Citation File Format
Creators: name: Druskat, Stephan
name: Spaaks, Jurriaan H.
name: Chue Hong, Neil
name: Haines, Robert
name: Baker, James
name: Bliven, Spencer
name: Willighagen, Egon
name: Pérez-Suárez, David
name: Konovalov, Alexander
Publisher: name: Zenodo
Year: 2021
Subjects: citation file format
CFF
citation files
software citation
file format
YAML
software sustainability
research software
credit

description: CITATION.cff files are plain text files with human- and machine-readable citation information for software. Code developers can include them in their repositories to let others know how to correctly cite their software. This is the specification for the Citation File Format.
description: {"references": ["A. M. Smith, D. S. Katz, K. E. Niemeyer, and FORCE11 Software Citation Working Group, \"Software citation principles,\" PeerJ Computer Science, vol. 2, p. e86, Sep. 2016 [Online]. Available: https://doi.org/10.7717/peerj-cs.86", "S. Druskat, \"Track 2 Lightning Talk: Should CITATION files be standardized?\" in Proceedings of the Workshop on Sustainable Software for Science: Practice and Experiences (WSSSPE5.1), 2017 [Online]. Available: https://doi.org/10.6084/m9.figshare.3827058", "R. Wilson, \"Encouraging citation of software - introducing CITATION files.\" 2013 [Online]. Available: https://www.software.ac.uk/blog/2013-09-02-encouraging-citation-software-introducing-citation-files", "O. Ben-Kiki, C. Evans, and I. d\u00f6t Net, \"YAML Ain't Markup Language (YAML) Version 1.2. 3rd Edition, Patched at 2009-10-01.\" 2009 [Online]. Available: http://yaml.org/spec/1.2/spec.html", "J.-M. Hufflen, \"Names in bibtex and mlBibTeX,\" TUGboat, vol. 27, no. 2, pp. 243\u2013253, Nov. 2006 [Online]. Available: https://www.tug.org/TUGboat/tb27-2/tb87hufflen.pdf"]}
Nuclear mid-infrared properties of nearby low-luminosity AGN
Creators: name: Asmus, D.
name: Hönig, S. F.
name: Gandhi, P.
name: Smette, A.
name: Duschl, W. J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present ground-based high-spatial resolution mid-infrared (MIR) observations of 20 nearby low-luminosity AGN (LLAGN) with VLT/VISIR and the preliminary analysis of a new sample of 10 low-luminosity Seyferts observed with Gemini/Michelle. LLAGN are of great interest because these objects are the most common among active galaxies, especially in the nearby universe. Studying them in great detail makes it possible to investigate the AGN evolution over cosmic timescale. Indeed, many LLAGN likely represent the final stage of an AGN's lifetime. We show that even at low luminosities and accretion rates nuclear unresolved MIR emission is present in most objects. Compared to lower spatial resolution Spitzer/IRS spectra, the high-resolution MIR photometry exhibits significantly lower fluxes and different PAH emission feature properties in many cases. By using scaled Spitzer/IRS spectra of typical starburst galaxies, we show that the star formation contribution to the 12 micron emission is minor in the central parsecs of most LLAGN. Therefore, the observed MIR emission in the VISIR and Michelle data is most likely emitted by the AGN itself, which, for higher luminosity AGN, is interpreted as thermal emission from a dusty torus. Furthermore, the 12 micron emission of the LLAGN is strongly correlated with the absorption corrected 2-10 keV luminosity and the MIR--X-ray correlation found previously for AGN is extended to a range from 10^40 to 10^45 erg/s. This correlation is independent of the object type, and in particular the low-luminosity Seyferts observed with Michelle fall exactly on the power-law fit valid for brighter AGN. In addition, no dependency of the MIR--X-ray ratio on the accretion rate is found. These results are consistent with the unification model being applicable even in the probed low-luminosity regime.
description: to appear in the proceedings of AHAR 2011: The Central Kiloparsec in Galactic Nuclei
High-throughput abattoir ovine eyes repurposed for corneal xenografting and circular economic practices
Creators: name: Corridon, Peter
Publisher: name: figshare
Year: 2022
Subjects: Agricultural biotechnology not elsewhere classified
Regenerative medicine (incl. stem cells)

description: High-throughput platforms that can potentially generate substantial quantities of corneal grafts will be invaluable in addressing the existing global demand for keratoplasty. Slaughterhouses generate substantial quantities of underutilized biological waste that can be repurposed to reduce current environmentally unfriendly practices. Such efforts to support sustainability can simultaneously drive the development of transplantable ovine corneas and patient-specific bioartificial keratoprostheses. This study presents a dataset highlighting techniques that evaluated the development of a simplified, inexpensive, and high-throughput corneal xenograft platform. To our knowledge, this is the first dataset to be generated in the United Arab Emirates, outlining a platform that can produce dozens of native ovine xenografts and acellular corneal scaffolds that effectively preserve ocular transparency, transmittance, and ECM components. Such native grafts can then be genetically modified to reduce rejection and retrovirus transmission in recipients. Analogously, decellularization technologies can support corneal regeneration with attributes comparable to native xenografts.
Quantum magnetoelectric effect in molecular crystal Dy$_3$
Creators: name: Plokhov, D. I.
name: Popov, A. I.
name: Zvezdin, A. K.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Magnetoelectric properties of a molecular crystal formed by dysprosium triangular clusters are investigated. The effective spin-electric Hamiltonian is derived on the base of developed quantum mechanical model of the cluster spin structure. The magnetoelectric contribution to the free energy of the crystal is calculated. The analysis reveals several distinctive features of the magnetoelectric effect, which are not typical for conventional paramagnetic systems at low temperatures. The peculiarities are explained by the chirality of the dysprosium core of the molecules.
title: Vocabulary list, Cardamom Khmer (Chanthaburi)
title: Liste de vocabulaire, khmer des Cardamomes (Chanthaburi)
Creators: name: Martin, Marie Alexandrine
Publisher: name: Pangloss
Year: 2016
Subjects: subject: Linguistique
subject: Cardamom Khmer

description: Vocabulary list for the Cardamom Khmer (Chanthaburi). The speaker is a man, unspecified age. Digitized from Michel Ferlus's copy of Marie Alexandrine Martin's original recording.
description: Liste de vocabulaire, Khmer des Cardamomes (Chanthaburi), par un locuteur dont l'âge n'est pas précisé - [Face 7-A] Récits ; vocabulaire
Mössbauer Studies of Coordination Compounds using Synchrotron Radiation
Creators: name: Paulsen, Hauke
name: Schünemann, Volker
name: Trautwein, Alfred Xaver
name: Winkler, Heiner
Publisher: name: arXiv
Year: 2012
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Nuclear resonant forward scattering (NFS) and nuclear inelastic scattering (NIS) of synchrotron radiation are fairly recent spectroscopic methods for the investigation of complexes containing Mössbauer-active transition metal ions. NFS, which can be regarded as Mössbauer spectroscopy in the time domain, overcomes some limitations of conventional Mössbauer spectroscopy as has been demonstrated especially for bioinorganic compounds. NIS extends the energy range of conventional Mössbauer spectroscopy to the range of molecular vibrations. Since NIS is sensitive only to the mean-square displacement of Mössbauer nuclei it can be used as site-selective vibrational spectroscopy. It complements usefully comparable techniques such as IR or Raman spectroscopy. Examples are given for applications to spin crossover complexes, nitroprusside compounds, heme model complexes and myoglobin.
title: Vocabulary list (botany), Pear language
title: Liste de vocabulaire (botanique), Pear
Creators: name: Martin, Marie Alexandrine
Publisher: name: Pangloss
Year: 2016
Subjects: subject: Linguistique
subject: Pear

description: Vocabulary list (botany), Pear, one male speaker, unspecified age. Digitized from Michel Ferlus's copy of Marie Alexandrine Martin's original recording.
description: Liste de vocabulaire (lexique botanique), Pear, un informateur homme dont l'âge n'est pas précisé - [Face 8-A] Enquête botanique … ; [Face 8-B] Enquête linguistique suite et fin ; chants