cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Model for Gradual Phase Heating Driven by MHD Turbulence in Solar Flares
Creators: name: Ashfield, William
name: Longcope, Dana
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Coronal flare emission is commonly observed to decay on timescales longer than those predicted by impulsively-driven, one-dimensional flare loop models. This discrepancy is most apparent during the gradual phase, where emission from these models decays over minutes, in contrast to the hour or more often observed. Magnetic reconnection is invoked as the energy source of a flare, but should deposit energy into a given loop within a matter of seconds. Models which supplement this impulsive energization with a long, persistent ad hoc heating have successfully reproduced long-duration emission, but without providing a clear physical justification. Here we propose a model for extended flare heating by the slow dissipation of turbulent Alfvén waves initiated during the retraction of newly-reconnected flux tubes through a current sheet. Using one-dimensional simulations, we track the production and evolution of MHD wave turbulence trapped by reflection from high-density gradients in the transition region. Turbulent energy dissipates through non-linear interaction between counter-propagating waves, modeled here using a phenomenological one-point closure model. AIA EUV light curves synthesized from the simulation were able to reproduce emission decay on the order of tens of minutes. We find this simple model offers a possible mechanism for generating the extended heating demanded by observed coronal flare emissions self-consistently from reconnection-powered flare energy release.
Unravelling the mass spectrum of destroyed dwarf galaxies with the metallicity distribution function
Creators: name: Deason, Alis J.
name: Koposov, Sergey E.
name: Fattahi, Azadeh
name: Grand, Robert J. J.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Accreted stellar populations are comprised of the remnants of destroyed galaxies, and often dominate the `stellar haloes' of galaxies such as the Milky Way (MW). This ensemble of external contributors is a key indicator of the past assembly history of a galaxy. We introduce a novel statistical method that uses the unbinned metallicity distribution function (MDF) of a stellar population to estimate the mass spectrum of its progenitors. Our model makes use of the well-known mass-metallicity relation of galaxies and assumes Gaussian MDF distributions for individual progenitors: the overall MDF is thus a mixture of MDFs from smaller galaxies. We apply the method to the stellar halo of the MW, as well as the classical MW satellite galaxies. The stellar components of the satellite galaxies have relatively small sample sizes, but we do not find any evidence for accreted populations with L > L_host/100. We find that the MW stellar halo has N~1-3 massive progenitors (L > 10^8 L_Sun) within 10 kpc, and likely several hundred progenitors in total. We also test our method on simulations of MW-mass haloes, and find that our method is able to recover the true accreted population within a factor of two. Future datasets will provide MDFs with orders of magnitude more stars, and this method could be a powerful technique to quantify the accreted populations down to the ultra-faint dwarf mass-scale for both the MW and its satellites.
description: 13 pages, 11 figures. MNRAS in press
Wenn Schüler*innen trauern: Trauerbegleitung in der Schulsozialarbeit
Creators: name: Gashi, Arian
Publisher: name: Zenodo
Year: 2022

description: Der Verlust einer nahestehenden Person bringt Kinder in eine sensible Phase ihrer Entwicklung. Der Tod stellt sie vor Herausforderungen, die sich in vielfältigen Trauerreaktionen zeigen. Da Kinder anders als Erwachsene trauern, werden diese Reaktionen oftmals als starke Belastung im Umfeld empfunden. Die Kinder selbst erfahren im Altersspektrum zwischen sechs und zwölf Jahren eine Lebenswelt, die sowohl von ihrem kindlichen, spielerischen Verhalten geprägt ist als auch von einem Schulsystem, das ein Arbeitsverhalten von ihnen einfordert. Je nachdem, wie resilient ein Kind ist, wird es mit dem Ver-lust unterschiedlich umgehen. Die Schulsozialarbeit kann helfen, Trauerreaktionen zu interpretieren und Kinder in ihrem individuellen Trauerprozess zu begleiten. Diese Bachelor-Arbeit widmet sich der Trauerarbeit im Einzelsetting und den möglichen Interventionen entlang der kinderspezifischen Trauerreaktionen. Die Handlungsempfehlungen orientieren sich an einer Konzeption, welche den Trauerprozess in vier Traueraufgaben unterteilt. Innerhalb dieser Traueraufgaben werden Interventionsmöglichkeiten erarbeitet, um die Bewältigung der jeweiligen Traueraufgaben unterstützend zu begleiten.
description: + Code Diss LU: hslusa basa + Fussnote: Bachelor-Arbeit, Hochschule Luzern – Soziale Arbeit, Studienrichtung Sozialarbeit, 2022 + NL-Code: NLLUHSA202209
Anytime Control using Input Sequences with Markovian Processor Availability
Creators: name: Quevedo, Daniel E.
name: Ma, Wann-Jiun
name: Gupta, Vijay
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optimization and Control (math.OC)
subject: Systems and Control (eess.SY)
subject: FOS: Mathematics
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: 93C10, 93E15

description: We study an anytime control algorithm for situations where the processing resources available for control are time-varying in an a priori unknown fashion. Thus, at times, processing resources are insufficient to calculate control inputs. To address this issue, the algorithm calculates sequences of tentative future control inputs whenever possible, which are then buffered for possible future use. We assume that the processor availability is correlated so that the number of control inputs calculated at any time step is described by a Markov chain. Using a Lyapunov function based approach we derive sufficient conditions for stochastic stability of the closed loop.
description: IEEE Transactions on Automatic Control, to be published
Brief an einen Freund [Fritz Burckhardt-Brenner?]
Creators: name: Böcklin, Arnold
Publisher: name: [s.n.]
Year: 1875

description: von Arnold Böcklin
description: J.A. Stargardt & Moirandat Company Kauf 27.11.2009 2009,41H Öffentliche Bibliothek der Universität Basel Kaufpreis: CHF 1000.-; Katalog-Nr. 482
description: Deutsch
description: Verzeichnung=Description=Inventaire Okt. 2015 HAN-Katalogisierungsregeln
Brief an Director [Adolf] Weibel in Königsfelden
Creators: name: Böcklin, Arnold
name: Böcklin, Carlo
Publisher: name: [s.n.]
Year: 1893
Subjects: Böcklin, Arnold1857-1932

description: An den Direktor der Nervenheilanstalt Königsfelden im Aargau bezüglich Böcklins zweitem Sohn Arnold und dessen Übersendung nach Basel.
description: von Arnold Böcklin
description: J.A. Stargardt & Moirandat Company Kauf 27.11.2009 2009,41H Öffentliche Bibliothek der Universität Basel Kaufpreis: CHF 800.-; Katalog-Nr. 483
description: Deutsch
description: Verzeichnung=Description=Inventaire Okt. 2015 HAN-Katalogisierungsregeln
description: 1: Dankesbrief von Carlo Böcklin an Heinrich Alfred Schmid (14.03.1920) anlässlich der Übersendung des ersten Bandes von dessen vierbändigem Monumentalwerk über seinen Vater (1 Bl.)
Intensity Interferometry observations of the H$α$ envelope of $γ$ Cas with MéO and a portable telescope
Creators: name: Matthews, Nolan
name: Rivet, Jean-Pierre
name: Vernet, David
name: Hugbart, Mathilde
name: Labeyrie, Guillaume
name: Kaiser, Robin
name: Chabé, Julien
name: Courde, Clément
name: Lai, Olivier
name: Vakili, Farrokh
name: Garde, Olivier
name: Guerin, William
Publisher: name: arXiv
Year: 2023
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report on observations of the extended environment of the bright Be star $γ$-Cas performed using intensity interferometry measurements within its H$α$ emission line. These observations were performed using a modified version of the I2C intensity interferometry instrument installed onto the 1.54 meter MéO optical metrology telescope and a portable 1-meter telescope (T1M). In order to better constrain the extent of the H$α$ envelope, observations were performed for two different positions of the T1M telescope, corresponding to an intermediate and long baselines in which the extended region was partially and fully resolved. We find that the observed data are consistent with past interferometric observations of $γ$-Cas. These observations demonstrate the capability to equip optical telescopes of different optical designs with intensity interferometry capabilities and illustrate the potential to scale a similar system onto many additional telescopes.
Estimation of General and Specific Combining Ability of Maize Inbred Lines Using Single Cross Testers for Earliness
Creators: name: Masila, Benard
name: Mwimali, Murenga
name: Githiri, Mwangi
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 310503
subject: Developmental genetics (incl. sex determination)

description: Maize (Zea mays L.) is third most consumed crop worldwide after rice and wheat. Maize is the main staple food in sub-Saharan Africa and Kenya, however, production has continuously been low over the past years. A line by tester analysis was carried out for 30 inbred lines and two testers to evaluate the GCA and SCA effects for yield and associated traits at three locations in Kenya during the 2016/2017 growing season. There were significant GCA and SCA mean squares indicating that both additive and non-additive gene effects contributed to the inheritance of the traits studied. Sum of squares of GCA was more than of SCA hence additive main effects contributed more to the inheritance of the traits than non-additive gene effects. Lines 1, 17, 6, 29 and 30 were good general combiners for grain yield. Testcrosses L30×T2 (4.40 t ha-1), L13×T1 (3.85 t ha-1), L20×T1 (3.59 t ha-1) and L9×T1 (3.52 t ha-1) yielded higher than best check mean and had good specific combining ability for grain yield and earliness in anthesis and silking dates. These genotypes can be evaluated further for grain yield and earliness and commercially released for use in areas with short rains.
Use of soursop and sweetsop juice in the management of diarrhoea in children
Creators: name: Ifeoma Enweani
Publisher: name: figshare
Year: 2020
Subjects: subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences

description: Acute diarrhoea is an important cause of morbidity and mortality in children. Although oral rehydration therapy (ORT) is useful for treating diarrhoea, it does not actually reduce the duration of diarrhoea, and people turn to alternative methods of management. This often results in the use of antidiarrhoeal drugs (1). Cereal-based oral rehydration solution (ORS) has been a step forward and is effective in reducing the duration of diarrhoea and in reducing stool output by up to 35% in cases of cholera.
Probing millisecond pulsars at high-energy with current and future observatories
Creators: name: Guillot, Sebastien
Publisher: name: Zenodo
Year: 2022

description: The still undetermined equation of state of dense nuclear matter can be constrained by measuring the masses and radii of neutron stars. X-ray observations of rotation-powered millisecond pulsars (MSP) with NICER provide the phase-energy information necessary to apply the pulse-profile modelling technique and extract their mass and radius. ATHENA will also be enable such analyses with improved sensitivity, lower background, and more importantly, with a background that can be empirically determined. Nonetheless, a lot of complementary information can be obtained from soft and hard X-ray observations with current and future observatories. I think talk, I will show that the entire (warm) surface emission of MSPs can also help measure the neutron star radius. I will also discuss the possible contributions of non-thermal emission in the soft and hard X-ray band and how they may affect pulse-profile modelling. Finally, in the context of ATHENA observations of MSPs, I will discuss briefly how the high-resolution spectroscopy capabilities of X-IFU might reveal atomic and/or cyclotron spectral features. This would help characterising the surface gravity (redshifting the atomic lines) and/or the magnetic field structure and strength of MSPs
Activity distribution of comet 67P/Churyumov-Gerasimenko from combined measurements of non-gravitational forces and torques
Creators: name: Attree, Nicholas
name: Jorda, Laurent
name: Groussin, Olivier
name: Agarwal, Jessica
name: Manghi, Riccardo Lasagni
name: Tortora, Paolo
name: Zannoni, Marco
name: Marschall, Raphael
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Aims. Understanding the activity is vital for deciphering the structure, formation, and evolution of comets. We investigate models of cometary activity by comparing them to the dynamics of 67P/Churyumov-Gerasimenko. Methods. We matched simple thermal models of water activity to the combined Rosetta datasets by fitting to the total outgassing rate and four components of the outgassing induced non-gravitational force and torque, with a final manual adjustment of the model parameters to additionally match the other two torque components. We parametrised the thermal model in terms of a distribution of relative activity over the surface of the comet, and attempted to link this to different terrain types. We also tested a more advanced thermal model based on a pebble structure. Results. We confirm a hemispherical dichotomy and non-linear water outgassing response to insolation. The southern hemisphere of the comet and consolidated terrain show enhanced activity relative to the northern hemisphere and dust-covered, unconsolidated terrain types, especially at perihelion. We further find that the non-gravitational torque is especially sensitive to the activity distribution, and to fit the pole-axis orientation in particular, activity must be concentrated (in excess of the already high activity in the southern hemisphere and consolidated terrain) around the south pole and on the body and neck of the comet over its head. This is the case for both the simple thermal model and the pebble-based model. Overall, our results show that water activity cannot be matched by a simple model of sublimating surface ice driven by the insolation alone, regardless of the surface distribution, and that both local spatial and temporal variations are needed to fit the data.
description: Accepted for publication in A&A. 13 pages, 22 figures including appendix
Entropy of thin shells in a (2+1)-dimensional asymptotically AdS spacetime and the BTZ black hole limit
Creators: name: Lemos, José P. S.
name: Quinta, Gonçalo M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The thermodynamic equilibrium states of a static thin ring shell in a (2+1)-dimensional spacetime with a negative cosmological constant are analyzed. Inside the ring, the spacetime is pure anti-de Sitter (AdS), whereas outside it is a Bañados-Teitelbom-Zanell$ (BTZ) spacetime and thus asymptotically AdS. The first law of thermodynamics applied to the thin shell, plus one equation of state for the shell's pressure and another for its temperature, leads to a shell's entropy, which is a function of its gravitational radius alone. A simple example for this gravitational entropy, namely, a power law in the gravitational radius, is given. The equations of thermodynamic stability are analyzed, resulting in certain allowed regions for the parameters entering the problem. When the Hawking temperature is set on the shell and the shell is pushed up to its own gravitational radius, there is a finite quantum backreaction that does not destroy the shell. One then finds that the entropy of the shell at the shell's gravitational radius is given by the Bekenstein-Hawking entropy.
description: 9 pages
X-raying the hot gas in the Milky Way
Creators: name: Gatuzz, Efrain
Publisher: name: Zenodo
Year: 2022

description: We will use Athena spectra obtained with the X-ray Integral Field Unit (X-IFU) to study the hot component in the interstellar medium, traced by highly ionized species such as OVII, NeIX, and MgXI, and located in the Galactic thin/thick disc as well as the Galactic halo. Additionally, these observations will provide priceless information for the benchmarking of the theoretical atomic data included in the current generation of X-ray absorption models.
Data-Driven Selection and Spectral Classification of White Dwarf Stars
Creators: name: Vincent, Olivier
name: Bergeron, Pierre
name: Dufour, Patrick
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The next generation of spectroscopic surveys is expected to provide spectra for hundreds of thousands of white dwarf (WD) candidates in the upcoming years. Currently, spectroscopic classification of white dwarfs is mostly done by visual inspection, requiring substantial amounts of expert attention. We propose a data-driven pipeline for fast, automatic selection and spectroscopic classification of WD candidates, trained using spectroscopically confirmed objects with available Gaia astrometry, photometry, and Sloan Digital Sky Survey (SDSS) spectra with signal-to-noise ratios $\geq9$. The pipeline selects WD candidates with improved accuracy and completeness over existing algorithms, classifies their primary spectroscopic type with $\gtrsim 90\%$ accuracy, and spectroscopically detects main sequence companions with similar performance. We apply our pipeline to the Gaia Data Release 3 cross-matched with the SDSS Data Release 17 (DR17), identifying 424 096 high-confidence WD candidates and providing the first catalogue of automated and quantifiable classification for 36 523 WD spectra. Both the catalogue and pipeline are made available online. Such a tool will prove particularly useful for the undergoing SDSS-V survey, allowing for rapid classification of thousands of spectra at every data release.
description: Submitted to MNRAS (11 pages, 8 figures)
Exploring magnetic loops and serpentine fields in the quiet Sun with the GRIS-IFU
Creators: name: Campbell, Ryan James
name: Gafeira, Ricardo
name: Mathioudakis, Mihalis
name: Noda, Carlos Quintero
name: Collados, Manuel
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Synthetic observations produced from radiative magnetohydronamic simulations have predicted that higher polarization fractions in the quiet solar photosphere would be revealed by increasing the total integration time of observations at GREGOR resolutions. We present recently acquired disk centre observations of the Fe I $15648.5$ $\mathrmÅ$ line obtained with the GREGOR telescope equipped with the GRIS-IFU during excellent seeing conditions, showing exceptionally high polarization fractions. Our observation reveal an internetwork region with a majority ($>60\%$) of magnetised pixels displaying a clear transverse component of the magnetic field. This result is in stark contrast to previous disk-centre GRIS-IFU observations in this spectral line, which had predominantly vertical magnetic fields in the deep photosphere. At the same time, the median magnetic field strength is weaker than previous GRIS-IFU observations, indicating that the larger fraction of polarization signals cannot be explained by a more active target. We use the Stokes Inversion based on Response functions (SIR) code to analyse the data, performing over $45$ million inversions, and interrogate the impact of two conflicting approaches to the treatment of noise on the retrieval of the magnetic inclination and azimuth. We present several case studies of the zoo of magnetic features present in these data, including small-scale magnetic loops that seem to be embedded in a sea of magnetism, and serpentine fields, focusing on regions where full-vector spectropolarimetry has been achieved. We also present a new open-source Python 3 analysis tool, SIR Explorer (SIRE), that we use to examine the dynamics of these small-scale magnetic features.
description: 17 pages, 11 figures, Accepted for publication in ApJ
The quark orbital angular momentum of ground state octet baryons
Creators: name: Li, Jing-Feng
name: Chen, Cheng
name: Li, Gang
name: An, Chun-Sheng
name: Deng, Cheng-Rong
name: Xie, Ju-Jun
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Here we study the quark orbital angular momentum of the ground octet baryons employing an extended chiral constituent quark model, within which the baryon wave functions are taken to be superposition of the traditional $qqq$ and the $qqqq\bar{q}$ higher Fock components. Coupling between the two configurations is estimated using the $^3P_{0}$ quark-antiquark creation mechanism, and the corresponding coupling strength is determined by fitting the sea flavor asymmetry of the nucleon. The obtained numerical results show that the quark angular momentum of the nucleon, $Σ$, $Λ$ and $Ξ$ hyperons are in the range $0.10$-$0.30$. In addition, the quark angular momentum of all the hyperons are a little bit smaller than that of the nucleon. And the octet baryons spin fractions taken by the intrinsic quark orbital angular momentum could be up to $60\%$ in present model.
description: 9 pages, 3 figures, 3 tables
Fence-sitters Protect Cooperation in Complex Networks
Creators: name: Zhang, Yichao
name: Aziz-Alaoui, M. A.
name: Bertelle, Cyrille
name: Zhou, Shi
name: Wang, Wenting
Publisher: name: arXiv
Year: 2014
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Computer Science and Game Theory (cs.GT)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: 91A06, 91A10, 91A22

description: Evolutionary game theory is one of the key paradigms behind many scientific disciplines from science to engineering. In complex networks, because of the difficulty of formulating the replicator dynamics, most of previous studies are confined to a numerical level. In this paper, we introduce a vectorial formulation to derive three classes of individuals' payoff analytically. The three classes are pure cooperators, pure defectors, and fence-sitters. Here, fence-sitters are the individuals who change their strategies at least once in the strategy evolutionary process. As a general approach, our vectorial formalization can be applied to all the two-strategies games. To clarify the function of the fence-sitters, we define a parameter, payoff memory, as the number of rounds that the individuals' payoffs are aggregated. We observe that the payoff memory can control the fence-sitters' effects and the level of cooperation efficiently. Our results indicate that the fence-sitters' role is nontrivial in the complex topologies, which protects cooperation in an indirect way. Our results may provide a better understanding of the composition of cooperators in a circumstance where the temptation to defect is larger.
description: an article with 6 pages, 3 figures
Optical characterization and Radial velocity monitoring with Belgian and Indian Telescopes (ORBIT): the eclipsing binaries EPIC 211982753 and EPIC 211915147
Creators: name: Panchal, Alaxender
name: Joshi, Y. C.
name: De Cat, Peter
name: Lampens, Patricia
name: Goswami, Aruna
name: Tiwari, S. N.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The K2 eclipsing binary candidates EPIC 211982753 (hereinafter called EPIC2753) and EPIC 211915147 (hereinafter called EPIC5147) are characterized with the help of photometric and high-resolution spectroscopic data. The light curve analysis uses the R-band photometric data from the 1.3-m Devasthal Fast Optical Telescope (DFOT, India), ASAS-3 and K2 observations. High-resolution echelle spectra are collected using the HERMES spectrograph at the 1.2-m MERCATOR telescope (La Palma, Spain). The synthetic light and radial velocity curves are generated with the help of the modeling package PHOEBE 1.0. The orbital period analysis based on the ~3.2 years of K2 observations does not show any change in the orbital period of both targets. The component masses M1,2 are estimated as 1.69(0.02) and 1.59(0.02) solar mass for EPIC2753, and 1.48(0.01) and 1.27(0.01) solar mass for EPIC5147. Both systems are high mass-ratio eclipsing binaries with q>0.85. The component radii R1,2 are found to be 1.66(0.02) and 1.53(0.02) solar radius for EPIC2753, and 1.80(0.05) and 1.42(0.05) solar radius for EPIC5147. The distances of EPIC2753 and EPIC5147 are determined as 238(4) and 199(5) pc, respectively. MESA Isochrones and Stellar Tracks are used to understand the evolutionary status of both systems.
description: Accepted for publication in MNRAS
Dissipative preparation of large W states in Optical Cavities
Creators: name: Sweke, R.
name: Sinayskiy, I.
name: Petruccione, F.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Two novel schemes are proposed for the dissipative preparation of large W states, of the order of ten qubits, within the context of Cavity QED. By utilizing properties of the irreducible representations of su(3), we are able to construct protocols in which it is possible to restrict the open system dynamics to a fully symmetric irreducible subspace of the total Hilbert space, and hence obtain analytic solutions for effective ground state dynamics of arbitrary sized ensembles of $Λ$ atoms within an optical cavity. In the proposed schemes, the natural decay processes of spontaneous emission and photon loss are no longer undesirable, but essential to the required dynamics. All aspects of the proposed schemes relevant to implementation in currently available optical cavities are explored, especially with respect to increasing system size.
description: 21 page, 14 figures;
Wölfflinsche Familienchronik
Creators: name: Wölfflin, Eduard
name: Wölfflin, Ernst
name: Wölfflin, Heinrich
Publisher: name: [s.n.]
Year: 1891

description: S. 1-200: Aufzeichnungen von Eduard Wölfflin 1891-1907, jeweils an Silvester niedergeschrieben. S. 201-202 leer.
description: S. 203-225: Aufzeichnungen von Heinrich Wölfflin 1908-1909, ebenfalls je auf Silvester datiert.
description: Zettel auf dem vorderen Vorsatzbl. "Wölfflinsche Chronik, kommt in das Familienarchiv zu Dr. Schwarber (Basel) E. Wölfflin, 18. XII. 49", und "12. Sept 1961 im Nachlass Ernst Wf auf der UB gefunden. Gantner". Öffentliche Bibliothek der Universität Basel
description: Deutsch
description: Digitalisierung=Digitization=Numérisation Juni 2023 TIFF
description: Aufzeichnungen von Ernst Wölfflin. Lose Blätter aus den Jahren 1910 (Bl. 1-4), 1911 (Bl. 5-7) und 1914 (Bl. 8-18); meist Stenographie
Formation of Magnetized Prestellar Cores with Ambipolar Diffusion and Turbulence
Creators: name: Chen, Che-Yu
name: Ostriker, Eve C.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We investigate the roles of magnetic fields and ambipolar diffusion during prestellar core formation in turbulent giant molecular clouds (GMCs), using three-dimensional numerical simulations. Our simulations focus on the shocked layer produced by a converging flow within a GMC, and survey varying ionization and angle between the upstream flow and magnetic field. We also include ideal magnetohydrodynamic (MHD) and hydrodynamic models. From our simulations, we identify hundreds of self-gravitating cores that form within 1 Myr, with masses M ~ 0.04 - 2.5 solar-mass and sizes L ~ 0.015 - 0.07 pc, consistent with observations of the peak of the core mass function (CMF). Median values are M = 0.47 solar-mass and L = 0.03 pc. Core masses and sizes do not depend on either the ionization or upstream magnetic field direction. In contrast, the mass-to-magnetic flux ratio does increase with lower ionization, from twice to four times the critical value. The higher mass-to-flux ratio for low ionization is the result of enhanced transient ambipolar diffusion when the shocked layer first forms. However, ambipolar diffusion is not necessary to form low-mass supercritical cores. For ideal MHD, we find similar masses to other cases. These masses are 1 - 2 orders of magnitude lower than the value that defines a magnetically supercritical sphere under post-shock ambient conditions. This discrepancy is the result of anisotropic contraction along field lines, which is clearly evident in both ideal MHD and diffusive simulations. We interpret our numerical findings using a simple scaling argument which suggests that gravitationally critical core masses will depend on the sound speed and mean turbulent pressure in a cloud, regardless of magnetic effects.
description: 41 pages, 14 figures, 3 tables, accepted for publication in Astrophysical Journal
Transport of Correlated Electrons through Disordered Chains: A Perspective on Entanglement, Conductance, and Disorder Averaging
Creators: name: Karlsson, Daniel
name: Verdozzi, Claudio
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate electron transport in disordered Hubbard chains contacted to macroscopic leads, via the non-equilibrium Green's functions technique. We observe a cross-over of currents and conductances at finite bias which depends on the relative strength of disorder and interactions. The finite-size scaling of the conductance is highly dependent on the interaction strength, and exponential attenuation is not always seen. We provide a proof that the Coherent Potential Approximation, a widely used method for treating disorder averages, fulfils particle conservation at finite bias with or without electron correlations. Finally, our results hint that the observed trends in conductance due to interactions and disorder also appear as signatures in the single-site entanglement entropy.
description: 5 pages, 4 figures
A neural network for beam background decomposition in Belle II at SuperKEKB
Creators: name: Schwenker, B.
name: Herzberg, L.
name: Buch, Y.
name: Frey, A.
name: Natochii, A.
name: Vahsen, S.
name: Nakayama, H.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We describe a neural network for predicting the background hit rate in the Belle II detector produced by the SuperKEKB electron-positron collider. The neural network, BGNet, learns to predict the individual contributions of different physical background sources, such as beam-gas scattering or continuous top-up injections into the collider, to Belle II sub-detector rates. The samples for learning are archived 1 Hz time series of diagnostic variables from the SuperKEKB collider subsystems and measured hit rates of Belle II used as regression targets. We test the learned model by predicting detector hit rates on archived data from different run periods not used during training. We show that a feature attribution method can help interpret the source of changes in the background level over time.
description: Submitted to NIM-A
A multi-storey DNA nanostructure containing doxorubicin and AS1411 aptamer for targeting breast cancer cells
Creators: name: Yaghoobi, Elnaz
name: Zavvar, TaranehSadat
name: Ramezani, Mohammad
name: Alibolandi, Mona
name: Oskuei, Sara Rahimzadeh
name: Zahiri, Mahsa
name: Nameghi, Morteza Alinezhad
name: Abnous, Khalil
name: Taghdisi, Seyed Mohammad
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer

description: Herein, we presented a novel DOX-loaded multi-storey DNA nanostructure, including AS1411 aptamer as a targeting agent for treatment of target cells (MCF-7 and 4T1). Gel retardation test and fluorometric analysis were used to examine the construction of DNA nanostructure and loading of DOX in the complex. At pH 5.5 and 7.4, the release patterns of DOX from the prepared formulation were studied. Cell viability test was conducted to analyse the cell cytotoxicity ability of the DOX loaded multi-storey DNA nanostructure compared to free DOX in 4T1, MCF-7 (target) and CHO cells (non-target). Flow cytometry analysis was used to examine the DOX-loaded DNA nanostructure internalisation. Finally, the developed DOX-loaded multi-storey DNA nanostructure was tested in vivo to see if it could prevent tumour growth. The drug was released from the nanocomplex in a pH-related process (higher release in acidic pH compared to neutral pH). According to MTT assay, DOX-loaded DNA nanostructure damaged nucleolin positive cells while not significantly affecting nucleolin negative cells. The formulation was efficaciously internalised into target cells (4T1 and MCF-7), but not into non-target ones. Moreover, DOX-loaded DNA nanostructure can restrict tumour growth, increase survival rate, and accumulate significantly more in the tumour site than free DOX.
Karte an Sigmund Landsinger
Creators: name: Böcklin, Arnold
name: Böcklin, Angela
name: Böcklin, Carlo
name: Böcklin, Any
name: Müller-Coburg, Karl Gottfried
name: Müller-Coburg, Edith
name: Remi, Chiara
Publisher: name: [s.n.]
Year: 1898

description: von Arnold Böcklin, Angela Böcklin, Carlo Böcklin, Any Böcklin, Edith Müller-Coburg, Carl Müller-Coburg, Chiara Remi, Peter
description: Öffentliche Bibliothek der Universität Basel
description: Deutsch
Olaparib@human serum albumin nanoparticles as sustained drug-releasing tumour-targeting nanomedicine to inhibit growth and metastasis in the mouse model of triple-negative breast cancer
Creators: name: Vysyaraju, Nageswara Rao
name: Paul, Milan
name: Ch, Sanjay
name: Ghosh, Balaram
name: Biswas, Swati
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer

description: Poly(ADP-ribose) polymerase inhibitor olaparib demonstrated therapeutic effectiveness in highly metastatic triple-negative breast cancer (TNBC). However, olaparib offers a weak therapeutic response in wild-type BRCA cancers due to the drug’s poor bioavailability. Here, a bioinspired/active-tumour targeted nanoparticles system of human serum albumin with physical entrapment of olaparib was prepared via a low-energy desolvation technique using the crosslinker glutaraldehyde. The developed OLA@HSA NPs were nanosize (∼140 nm), kinetically stable with a low polydispersity (0.3), exhibited olaparib entrapment (EE 76.01 ± 2.53%, DL 6.76 ± 0.22%) and sustained drug release at pH 7.4 with an enhancement of drug release in acidic pH. OLA@HSA NPs decreased the half-maximal inhibitory concentrations (IC50) of olaparib by 1.6-, 1.8-fold in 24 h and 2.2-, 2.4-fold in 48 h for human (MDA-MB 231) and mouse (4T1) TNBC cells, respectively, mediated by their enhanced time-dependent cellular uptake than free olaparib. The OLA@HSA NPs induced concentration-dependent phosphatidylserine (apoptotic marker) externalisation and arrested the cell population in the G2/M phase in both the tested cell lines at a higher level than free olaparib. The NPs formulation increased DNA fragmentation, mitochondrial membrane depolarisation and ROS generation than the free olaparib. The in vivo study conducted using 4T1-Luc tumour-bearing mice demonstrated strong tumour growth inhibitory potential of OLA@HSA NPs by elevating apoptosis ROS generation and reducing the level of the antiproliferative marker, Ki-67. OLA@HSA NPs reduced the occurrence of lung metastasis (formation of metastasis nodules decreased by ∼10-fold). OLA@HSA NPs could be a promising nanomedicine for the TNBC treatment.
Testing the rotating lighthouse model with the double pulsar system PSR J0737-3039A/B
Creators: name: Liang, Zhu-Xing
name: Liang, Yi
name: Weisberg, Joel M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Each of the two pulsars in the double pulsar PSR J0737-3039A/B system exhibits not only the pulses emanating from itself, but also displays modulations near the pulse period of the other. Freire et al. (2009, MNRAS, 396, 1764) have put forward a technique using the modulation of B by A to determine the sense of rotation of pulsar A relative to its orbital motion, among other quantities. In this paper, we present another technique with the same purpose. While the Freire et al. approach analyzes pulse arrival times, ours instead uses periods or frequencies (their inverses), which can be experimentally determined via power spectral analysis similar to that used in pulsar searches. Our technique is based on the apparent change in spin period of a body when it is measured from an orbiting platform (the other pulsar), and is shown to be entirely analogous to the difference between the sidereal and solar spin period of the Earth (i.e., the sidereal and solar day). Two benefits of this approach are its conceptual and computational simplicity. The direct detection of spin with this technique will observationally validate the rotating lighthouse model of pulsar emission, while the detection of the relative directions of spin and orbital angular momenta has important evolutionary implications. Our technique can be used on other binary systems exhibiting mutually induced phenomena.
description: 7 pages, 2 figures, 2 tables, accepted by MNRAS, this article supersedes arXiv:1210.6561
Millimetre and sub-millimetre spectroscopy of doubly deuterated acetaldehyde (CHD2CHO) and first detection towards IRAS 16293-2422
Creators: name: Asensio, J. Ferrer
name: Spezzano, S.
name: Coudert, L. H.
name: Lattanzi, V.
name: Endres, C. P.
name: Jørgensen, J. K.
name: Caselli, P.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The abundances of deuterated molecules with respect to their main isotopologue counterparts have been determined to be orders of magnitude higher than expected from the cosmic abundance of deuterium relative to hydrogen. The increasing number of singly and multi-deuterated species detections helps us to constrain the interplay between gas-phase and solid-state chemistry and to understand better deuterium fractionation in the early stages of star formation. Acetaldehyde is one of the most abundant complex organic molecules (COMs) in star-forming regions and its singly deuterated isotopologues have already been observed towards protostars. A spectroscopic catalogue for astrophysical purposes is built for doubly deuterated acetaldehyde CHD2CHO from measurements in the laboratory. Submillimetre wave transitions were measured for the non-rigid doubly deuterated acetaldehyde CHD2CHO displaying hindered internal rotation of its asymmetrical CHD2 methyl group. A line position analysis is carried out allowing us to reproduce 853 transition frequencies with a weighted root mean square standard deviation of 1.7, varying 40 spectroscopic constants. A spectroscopic catalogue for astrophysical purposes is built from the analysis results. Using this catalogue we were able to detect for the first time CHD2CHO towards the low-mass protostellar system IRAS 16293-2422 utilizing data from the ALMA Protostellar Interferometric Line Survey. The first detection of the CHD2CHO species allows for the derivation of its column density with a value of 1.3x10^15 cm^-2 and an uncertainty of 10-20%. The resulting D2/D ratio of ~20% is found to be coincident with D2/D ratios derived for other complex organic molecules towards IRAS~16293-2422, pointing at a common formation environment with enhanced deuterium fractionation.
Reaching sub-millisecond accuracy in stellar occultations and artificial satellites tracking
Creators: name: Kamiński, K.
name: Weber, C.
name: Marciniak, A.
name: Żołnowski, M.
name: Gędek, M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: In recent years there appeared a need for astronomical observations timed with sub-millisecond accuracy. These include e.g. timing stellar occultations by small, sub-km or fast Near Earth Asteroids, but also tracking artificial satellites at Low Earth Orbit using optical sensors. Precise astrometry of fast-moving satellites, and accurate timing of stellar occultations have parallel needs, requiring reliable time source and good knowledge of camera delays. Thus a need for an external device that would enable equipment and camera testing, to check if they reach the required accuracy in time. We designed, constructed and thoroughly tested a New EXposure Timing Analyser (NEXTA): a GNSS-based precise timer (Global Navigation Satellite System), allowing to reach the accuracy of 0.1 millisecond, which is an order of magnitude better than in previously available tools. The device is a simple strip of blinking diodes, to be imaged with a camera under test and compare imaged time with internal camera time stamp. Our tests spanned a range of scientific cameras widely used for stellar occultations and ground-based satellite tracking. The results revealed high reliability of both NEXTA and most of the tested cameras, but also pointed that practically all cameras had internal time bias of various level. NEXTA can serve the community, being easily reproducible with inexpensive components. We provide all the necessary schemes and usage instructions.
description: 33 pages, 27 figures, 4 tables, Accepted to PASP
The BANANA project. V. Misaligned and precessing stellar rotation axes in CV Velorum
Creators: name: Albrecht, Simon
name: Winn, Joshua N.
name: Torres, Guillermo
name: Fabrycky, Daniel C.
name: Setiawan, Johny
name: Gillon, Michael
name: Jehin, Emmanuel
name: Triaud, Amaury
name: Queloz, Didier
name: Snellen, Ignas
name: Eggleton, Peter
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: As part of the BANANA project (Binaries Are Not Always Neatly Aligned), we have found that the eclipsing binary CV Velorum has misaligned rotation axes. Based on our analysis of the Rossiter-McLaughlin effect, we find sky-projected spin-orbit angles of $β_{\rm p} = -52\pm6^{\circ}$ and $β_{\rm s}= 3\pm7^{\circ}$ for the primary and secondary stars (B2.5V $+$ B2.5V, $P=6.9$ d). We combine this information with several measurements of changing projected stellar rotation speeds ($v \sin i_{\star}$) over the last $30$ years, leading to a model in which the primary star's obliquity is $\approx65^{\circ}$, and its spin axis precesses around the total angular momentum vector with a period of about $140$ years. The geometry of the secondary star is less clear, although a significant obliquity is also implicated by the observed time variations in the $v \sin i_{\star}$. By integrating the secular tidal evolution equations backward in time, we find that the system could have evolved from a state of even stronger misalignment similar to DI Herculis, a younger but otherwise comparable binary.
description: Accepted for publication in ApJ; 11 pages, 12 figures
Asymmetric regular types
Creators: name: Moconja, Slavko
name: Tanović, Predrag
Publisher: name: arXiv
Year: 2013
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 03C45

description: We study asymmetric regular types. If $\frak p$ is regular and $A$-asymmetric then there exists a strict order such that Morley sequences in $\frak p$ over $A$ are strictly increasing (we allow Morley sequences to be indexed by elements of a linear order). We prove that for all $M\supseteq A$ maximal Morley sequences in $\frak p$ over $A$ consisting of elements of $M$ have the same (linear) order type, denoted by $\Inv_{\frak p,A}(M)$, which does not depend on the particular choice of the order witnessing the asymmetric regularity. In the countable case we determine all possibilities for $\Inv_{\frak p,A}(M)$: either it can be any countable linear order, or in any $M\supseteq A$ it is a dense linear order (provided that it has at least two elements). Then we study relationship between $\Inv_{\frak p,A}(M)$ and $\Inv_{\frak q,A}(M)$ when $\frak p$ and $\frak q$ are strongly regular, $A$-asymmetric, and such that $\frak p_{\strok A}$ and $\frak q_{\strok A}$ are not weakly orthogonal. We distinguish two kinds on non-orthogonality: bounded and unbounded. In the bounded case we prove that $\Inv_{\frak p,A}(M)$ and $\Inv_{\frak q,A}(M)$ are either isomorphic or anti-isomorphic. In the unbounded case, $\Inv_{\frak p,A}(M)$ and $\Inv_{\frak q,A}(M)$ may have distinct cardinalities but we prove that their Dedekind completions are either isomorphic or anti-isomorphic. We provide examples of all four situations.
Nutrient Accumulation Characteristics of Facility Soils with Different Planting Years in Lateritic Red Soil Region of Guangxi
Creators: name: CHEN, Guifen
name: HUANG, Yanfei
name: PANG, Mei
name: HUANG, Yuyi
name: LIU, Bin
name: ZHAO, Xiuhe
name: OU, Xiaoqing
name: ZHOU, Yueyue
name: XIONG, Liumei
name: CHEN, Guifen
name: HUANG, Yanfei
name: PANG, Mei
name: HUANG, Yuyi
name: LIU, Bin
name: ZHAO, Xiuhe
name: OU, Xiaoqing
name: ZHOU, Yueyue
name: XIONG, Liumei
Publisher: name: Unknown
Year: 2022
Subjects: subject: Agribusiness
subject: Facility soil, Planting years, Nutrient accumulation, Acidification, Salinization

description: [Objectives] To explore the nutrient accumulation characteristics of facility soil in different planting years in the lateritic red soil region of Guangxi. [Methods] The soil samples of facility cultivation and open field cultivation were collected in the lateritic red soil region of Guangxi, and the changes of soil pH, water-soluble salts, organic matter, available nutrients and total nutrients were analyzed. [Results] The acidification of the facility soil in the lateritic red soil region of Guangxi became more obvious with the extension of greenhouse planting years, the soil pH decreased by 0.34 units after continuous planting for 10 years, and the water-soluble content was more than 3 times that of the open field and it increased with the extension of the planting years. In addition, the degree of secondary salinization in facility soil became more serious, mainly moderate and mild salinization. The contents of soil organic matter, alkali-hydrolyzed nitrogen, available phosphorus, available potassium, total nitrogen and total phosphorus in the facility soil increased significantly, while total potassium did not change significantly. [Conclusions] This study is expected to provide scientific basis for facility soil fertilization management, and to promote the sustainable and healthy development of facility cultivation industry.