cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Observations and three-dimensional photoionization modelling of the Wolf-Rayet planetary nebula Abell 48
Creators: name: Danehkar, A.
name: Todt, H.
name: Ercolano, B.
name: Kniazev, A. Y.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Recent observations reveal that the central star of the planetary nebula Abell 48 exhibits spectral features similar to massive nitrogen-sequence Wolf-Rayet stars. This raises a pertinent question, whether it is still a planetary nebula or rather a ring nebula of a massive star. In this study, we have constructed a three-dimensional photoionization model of Abell 48, constrained by our new optical integral field spectroscopy. An analysis of the spatially resolved velocity distributions allowed us to constrain the geometry of Abell 48. We used the collisionally excited lines to obtain the nebular physical conditions and ionic abundances of nitrogen, oxygen, neon, sulphur and argon, relative to hydrogen. We also determined helium temperatures and ionic abundances of helium and carbon from the optical recombination lines. We obtained a good fit to the observations for most of the emission-line fluxes in our photoionization model. The ionic abundances deduced from our model are in decent agreement with those derived by the empirical analysis. However, we notice obvious discrepancies between helium temperatures derived from the model and the empirical analysis, as overestimated by our model. This could be due to the presence of a small fraction of cold metal-rich structures, which were not included in our model. It is found that the observed nebular line fluxes were best reproduced by using a hydrogen-deficient expanding model atmosphere as the ionizing source with an effective temperature of 70 kK and a stellar luminosity of 5500 L_sun, which corresponds to a relatively low-mass progenitor star (~ 3 M_sun) rather than a massive Pop I star.
description: 12 pages, 7 figures, 12 tables, accepted by MNRAS
Frustrated magnetic interactions and quenched spin fluctuations in CrAs
Creators: name: Qin, Yayuan
name: Shen, Yao
name: Hao, Yiqing
name: Wo, Hongliang
name: Shen, Shoudong
name: Ewings, Russell A.
name: Zhao, Yang
name: Harriger, Leland W.
name: Lynn, Jeffrey W.
name: Zhao, Jun
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The discovery of pressure-induced superconductivity in helimagnets (CrAs, MnP) has attracted considerable interest in understanding the relationship between complex magnetism and unconventional superconductivity. However, the nature of the magnetism and magnetic interactions that drive the unusual double-helical magnetic order in these materials remains unclear. Here, we report neutron scattering measurements of magnetic excitations in CrAs single crystals at ambient pressure. Our experiments reveal well defined spin wave excitations up to about 150 meV with a pseudogap below 7 meV, which can be effectively described by the Heisenberg model with nearest neighbor exchange interactions. Most surprisingly, the spin excitations are largely quenched above the Neel temperature, in contrast to cuprates and iron pnictides where the spectral weight is mostly preserved in the paramagnetic state. Our results suggest that the helimagnetic order is driven by strongly frustrated exchange interactions, and that CrAs is at the verge of itinerant and correlation-induced localized states, which is therefore highly pressure-tunable and favorable for superconductivity.
description: 6 pages, 4 figures
Scripts used to analysis NCBI data
Creators: name: Pyne, Cassandre
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 309999
subject: Other agricultural, veterinary and food sciences not elsewhere classified

description: scripts to analyze NCBI data
NCBI_data_mining_final.R : main script to query NCBI BioSamples, first uncommented query is the query used in manuscript
Where does the energy go during the interstellar NH$_3$ formation on water ice? A computational study
Creators: name: Ferrero, Stefano
name: Pantaleone, Stefano
name: Ceccarelli, Cecilia
name: Ugliengo, Piero
name: Sodupe, Mariona
name: Rimola, Albert
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: In the coldest (10--20 K) regions of the interstellar medium, the icy surfaces of interstellar grains serve as solid-state supports for chemical reactions. Among their plausible roles, that of third body is advocated, in which the reaction energies of surface reactions dissipate throughout the grain, stabilizing the product. This energy dissipation process is poorly understood at the atomic scale, although it can have a high impact on Astrochemistry. Here, we study, by means of quantum mechanical simulations, the formation of NH3 via successive H-additions to atomic N on water ice surfaces, paying special attention to the third body role. We first characterize the hydrogenation reactions and the possible competitive processes (i.e., H-abstractions), in which the H-additions are more favourable than the H-abstractions. Subsequently, we study the fate of the hydrogenation reaction energies by means of ab initio molecular dynamics simulations. Results show that around 58--90\% of the released energy is quickly absorbed by the ice surface, inducing a temporary increase of the ice temperature. Different energy dissipation mechanisms are distinguished. One mechanism, more general, is based on the coupling of the highly excited vibrational modes of the newly formed species and the libration modes of the icy water molecules. A second mechanism, exclusive during the NH$_3$ formation, is based on the formation of a transient H$_3$O$^+$/NH$_2^-$ ion pair, which significantly accelerates the energy transfer to the surface. Finally, the astrophysical implications of our findings relative to the interstellar synthesis of NH$_3$ and its chemical desorption into the gas are discussed.
Stable difference methods for block-oriented adaptive grids
Creators: name: Nissen, Anna
name: Kormann, Katharina
name: Grandin, Magnus
name: Virta, Kristoffer
Publisher: name: arXiv
Year: 2014
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: In this paper, we present a block-oriented scheme for adaptive mesh refinement based on summation-by-parts (SBP) finite difference methods and simultaneous-approximation-term (SAT) interface treatment. Since the order of accuracy at SBP-SAT grid interfaces is lower compared to that of the interior stencils, we strive at using the interior stencils across block-boundaries whenever possible. We devise a stable treatment of SBP-FD junction points, i.e. points where interfaces with different boundary treatment meet. This leads to stable discretizations for more flexible grid configurations within the SBP-SAT framework, with a reduced number of SBP-SAT interfaces. Both first and second derivatives are considered in the analysis. Even though the stencil order is locally reduced close to numerical interfaces and corner points, numerical simulations show that the locally reduced accuracy does not severely reduce the accuracy of the time propagated numerical solution. Moreover, we explain how to organize the grid and how to automatically adapt the mesh, aiming at problems of many variables. Examples of adaptive grids are demonstrated for the simulation of the time-dependent Schrödinger equation and for the advection equation.
Robust two-state swap by stimulated Raman adiabatic passage
Creators: name: Genov, Genko T.
name: Rochester, Simon
name: Auzinsh, Marcis
name: Jelezko, Fedor
name: Budker, Dmitry
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Efficient initialization and manipulation of quantum states is important for numerous applications and it usually requires the ability to perform high fidelity and robust swapping of the populations of quantum states. Stimulated Raman adiabatic passage (STIRAP) has been known to perform efficient and robust inversion of the ground states populations of a three-level system. However, its performance is sensitive to the initial state of the system. In this contribution we demonstrate that a slight modification of STIRAP, where we introduce a non-zero single-photon detuning, allows for efficient and robust population swapping for any initial state. The results of our work could be useful for efficient and robust state preparation, dynamical decoupling and design of quantum gates in ground state qubits via two-photon interactions.
Phenolic composition, antioxidant, and cytotoxic effects on HeLa and HepG2 cancer cell lines of Mespilus germanica grown in Turkey
Creators: name: Yunusa, Umar Muazu
name: OZTURK UREK, Raziye
Publisher: name: figshare
Year: 2022
Subjects: subject: 30401 Biologically Active Molecules
subject: FOS: Chemical sciences
subject: 30403 Characterisation of Biological Macromolecules
subject: 30501 Free Radical Chemistry
subject: 30502 Natural Products Chemistry

description: This study screened flavonoids and phenolic acids, antioxidant and cytotoxic effects of Mespilus germanica leaf and fruit samples. The RP-HPLC-DAD analysis allowed the identification of hesperidin, epicatechin, epigallocatechin, benzoic, p-hydroxybenzoic, vanillic, protocatechuic, syringic, caffeic, ferulic, sinapic and p-coumaric acids in various extracts. Fruit BHPA, leaf BPBH2, and leaf free flavan-3-ol extracts exhibited the largest DPPH, OH and NO radicals scavenging activity, respectively. Furthermore, fruit BPBH1, leaf BPAH2 and leaf BPBH1 extracts showed the highest ferrous ion chelation, ferric ion reducing power and FRAP value, respectively. Moreover, leaf flavone extract showed remarkable cytotoxicity on HepG2 (IC50 = 36.49±1.12 μg/mL) as well as strong •OH scavenging and Fe2+ chelation activities; similarly, leaf BPAH1 extract demonstrated excellent cytotoxicity on HeLa (IC50 = 36.24±1.89 μg/mL).
Foreground Removal of CO Intensity Mapping Using Deep Learning
Creators: name: Zhou, Xingchen
name: Gong, Yan
name: Deng, Furen
name: Zhang, Meng
name: Yue, Bin
name: Chen, Xuelei
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Line intensity mapping (LIM) is a promising probe to study star formation, the large-scale structure of the Universe, and the epoch of reionization (EoR). Since carbon monoxide (CO) is the second most abundant molecule in the Universe except for molecular hydrogen ${\rm H}_2$, it is suitable as a tracer for LIM surveys. However, just like other LIM surveys, CO intensity mapping also suffers strong foreground contamination that needs to be eliminated for extracting valuable astrophysical and cosmological information. In this work, we take $^{12}$CO($\it J$=1-0) emission line as an example to investigate whether deep learning method can effectively recover the signal by removing the foregrounds. The CO(1-0) intensity maps are generated by N-body simulations considering CO luminosity and halo mass relation, and we discuss two cases with median and low CO signals by comparing different relations. We add foregrounds generated from real observations, including thermal dust, spinning dust, free-free, synchrotron emission and CMB anisotropy. The beam with sidelobe effect is also considered. Our deep learning model is built upon ResUNet, which combines image generation algorithm UNet with the state-of-the-art architecture of deep learning, ResNet. The principal component analysis (PCA) method is employed to preprocess data before feeding it to the ResUNet. We find that, in the case of low instrumental noise, our UNet can efficiently reconstruct the CO signal map with correct line power spectrum by removing the foregrounds and recovering PCA signal loss and beam effects. Our method also can be applied to other intensity mappings like neutral hydrogen 21cm surveys.
description: 12 pages, 12 figures, 2 tables. Accepted for publication in MNRAS
Hand Pollination: A Key for Improving the Fruit Yield of Custard Apple cv. Arka Sahan
Creators: name: Anil Khinchi1 and R.A Kaushik2*
Publisher: name: The Science world a Monthly e magazine
Year: 2023

description: Custard apple (Annona squamosa L.) belongs to the family Annonaceae, originated in tropical America and it is a small shrub of the genus Annona. It is commonly known as sweet apple or soursop. Custard apple is an aggregate fruit that grows from a single flower with numerous pistils, each with one carpel. Each pistil gives rise to a fruitlet. The fruitlets are referred to collectively as an aggregate or an etaerio. Custard apple seedlings can be observed growing wild in India. It is a cross pollinated crop, a wide variation in fruit shapes, sizes as well as pulp colour are available. A large number of local varieties are available in custard apple. In several areas of the growing zone, seedling progeny observed growing in the wild. The Arka Sahan, Balanagar, Mammoth, British Guinea, African Pride, Washington P1-98797, APK-1, Barbados seedling, Israeli Selection, Brandy, Islander, Red Sitaphal, are the varieties of custard apple. Among all the varieties, out of these Arka Sahan and Balanagar are having major share in commercial farming
Semi-Dirac dispersion relation in photonic crystals
Creators: name: Wu, Ying
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: A semi-Dirac cone refers to a peculiar type of dispersion relation that is linear along the symmetry line but quadratic in the perpendicular direction. Here, I demonstrate that a photonic crystal consisting of a square array of elliptical dielectric cylinders is able to produce this particular dispersion relation in the Brillouin zone center. A perturbation method is used to evaluate the linear slope and to affirm that the dispersion relation is a semi-Dirac type. Effective medium parameters calculated from a boundary effective medium theory not only explain the unexpected topological transition in the iso-frequency surfaces occurring at the semi-Dirac point, they also offer a perspective on the property at that point, where the photonic crystal behaves as a zero-refractive-index material along the symmetry axis but functions like at a photonic band edge in the perpendicular direction.
Image and video compression of fluid flow data
Creators: name: Anatharaman, Vishal
name: Feldkamp, Jason
name: Fukami, Kai
name: Taira, Kunihiko
Publisher: name: arXiv
Year: 2023
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Multimedia (cs.MM)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We study the compression of spatial and temporal features in fluid flow data using multimedia compression techniques. The efficacy of spatial compression techniques, including JPEG and JPEG2000 (JP2), and spatio-temporal video compression techniques, namely H.264, H.265, and AV1, in limiting the introduction of compression artifacts and preserving underlying flow physics are considered for laminar periodic wake around a cylinder, two-dimensional turbulence, and turbulent channel flow. These compression techniques significantly compress flow data while maintaining dominant flow features with negligible error. AV1 and H.265 compressions present the best performance across a variety of canonical flow regimes and outperform traditional techniques such as proper orthogonal decomposition in some cases. These image and video compression algorithms are flexible, scalable, and generalizable holding potential for a wide range of applications in fluid dynamics in the context of data storage and transfer.
Polymer-based Hybrid Integrated Photonic Devices for Silicon On-chip Modulation and Board-level Optical Interconnects
Creators: name: Zhang, Xingyu
name: Hosseini, Amir
name: Lin, Xiaohui
name: Subbaraman, Harish
name: Chen, Ray T.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The accelerating increase in information traffic demands the expansion of optical access network systems that require cost reduction of optical and photonic components. Low cost, ease of fabrication, and integration capabilities of low optical-loss polymers make them attractive for photonic applications. In addition to passive wave-guiding components, electro-optic (EO) polymers consisting of a polymeric matrix doped with organic nonlinear chromophores have enabled wide-RF-bandwidth and low-power optical modulators. Beside board level passive and active optical components, compact on-chip modulators (a few 100 micronmeters to a few millimeters) have been made possible by hybrid integration of EO polymers onto the silicon platform. This paper summarizes some of the recent progress in polymer based optical modulators and interconnects. A highly linear, broadband directional coupler modulator for use in analog optical links and compact, and low-power silicon/polymer hybrid slot photonic crystal waveguide modulators for on chip applications are presented. Recently, cost-effective roll-to-roll fabrication of electronic and photonic systems on flexible substrates has been gaining interest. A low-cost imprinted/ink-jet-printed Mach-Zehnder modulator and board-to-board optical interconnects using microlens integrated 45-degree mirror couplers compatible with the roll-to-roll fabrication platforms are also presented.
description: 15 pages, 17 figures. arXiv admin note: text overlap with arXiv:1403.0134
New characterization of two-state normal distribution
Creators: name: Ejsmont, Wiktor
Publisher: name: arXiv
Year: 2014
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 22E46, 53C35, 57S20

description: In this article we give a purely noncommutative criterion for the characterization of two-state normal distribution. We prove that families of two-state normal distribution can be described by relations which is similar to the conditional expectation in free probability, but has no classical analogue. We also show a generalization of Bozejko, Leinert and Speicher's formula (relating moments and noncommutative cumulants).
description: 19 pages, 2 figures, accepted for publication by Infinite Dimensional Analysis, Quantum Probability and Related Topics
The gender specifics of legal terminology
Creators: name: Волгина Елена Валерьевна
Publisher: name: Язык науки и профессиональная коммуникация
Year: 2023
Subjects: legal terminology
legal notion
gender
legal discourse
gender bias
gender discrimination
legal relations.

description: Due to the fact that law today is considered from a gender perspective, the study of gender aspect of formation and functioning of terminology is highly relevant. The aim of this paper is to identify the features of a legal term as a unit of special vocabulary and to explore the potential of English legal terms to explicit gender meanings. For this purpose, the method of discursive analysis is applied to examine modern and traditional approaches to the definition of the concept of “term”; to study the interpretation of the term “gender” as a discursive factor; to analyze the gender aspect of legal relations. The result of the research is the substantiation of legal discourse as an essential factor in constructing gender meanings of English legal terms. The gender specific phenomena are integrated into terminological system through structure and definitions of terms. As a result, legal terms may change the gender-neutral meaning embedded in them into gendered one.
The semantic-pragmatic features of English multifunctional adverbials in spoken discourse of the courtroom participants: theoretical frameworks and translation strategies
Creators: name: Молодкин Анатолий Михайлович
Publisher: name: Язык науки и профессиональная коммуникация
Year: 2023
Subjects: adverbials
discourse markers
semantic and pragmatic meanings
translation correspondences.

description: The article is devoted to the study of frequently found in everyday English language use three language units actually, in fact and really from the point of view of the similarities and differences between them when used in discursive and semantic meanings and their corresponding translations into Russian. Their multifunctional nature, being closely related in the meaning of actuality and reality, as their different degrees of grammaticalization and significant culture bound character often cause problems in translation. The use of quantitative and qualitative methods of contrastive research of the data obtained, makes it possible to understand better the scope of their multifunctionality. Special attention is given to the correlation with their translation correspondences in Russian in the area of functional and semantic equivalence, in particular, in the process of spoken interaction in the legal-related sphere.
Misalignment of the outer disk of DK Tau and a first look at its magnetic field using spectropolarimetry
Creators: name: Nelissen, M.
name: McGinnis, P.
name: Folsom, C. P.
name: Ray, T.
name: Vidotto, A. A.
name: Alecian, E.
name: Bouvier, J.
name: Morin, J.
name: Donati, J. -F.
name: Devaraj, R.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Misalignments between a forming star's rotation axis and its outer disk axis, although not predicted by standard theories of stellar formation, have been observed in several classical T Tauri stars (cTTs). The low-mass cTTs DK Tau is suspected of being among them. It is also an excellent subject to investigate the interaction between stellar magnetic fields and material accreting from the circumstellar disk, as it presents clear signatures of accretion. The goal of this paper is to study DK Tau's average line-of-sight magnetic field (Blos) in both photospheric absorption lines and emission lines linked to accretion, using spectropolarimetric observations, as well as to examine inconsistencies regarding its rotation axis. We used data collected with the ESPaDOnS and NARVAL spectropolarimeters, probing two distinct epochs (2010 and 2012). We first determined the stellar parameters, such as effective temperature and v sin i. Next, we removed the effect of veiling from the spectra, then obtained least-squares deconvolution profiles of the absorption lines, before determining the Blos. We also investigated emission lines, the 587.6 nm HeI line and the CaII infrared triplet, as tracers of the magnetic fields present in the accretion shocks. We find that DK Tau experiences accretion onto a magnetic pole at an angle of about 30 degrees from the pole of its rotation axis, with a positive field at the base of the accretion funnels. In 2010 we find a magnetic field of up to 1.77kG, and in 2012 up to 1.99kG. Additionally, using our derived values of period, v sin i and stellar radius, we find a value of 58 degrees (+18)(-11) for the inclination of the stellar rotation axis, which is significantly different from the outer disk axis inclination of 21 degrees given in the literature. We find that DK Tau's outer disk axis is likely misaligned compared to its rotation axis by 37 degrees.
Protection against TSE: Specified risk material should continue to be removed from small ruminants and destroyed - Joint opinion of the BfR and FLI
Creators: name: German Federal Institute For Risk Assessment (BfR)
name: Friedrich-Loeffler-Institut-Federal Research Institute For Animal Health (FLI)
Publisher: name: Zenodo
Year: 2015
Subjects: subject: TSE
subject: specified risk material
subject: SRM
subject: http://browser.agrisemantics.org/gacs/en/page/C18728

description: To comply with the current legal situation in the European Union, the so-called risk material must be removed and destroyed during the slaughter of cattle, sheep and goats. The specified risk material (SRM) includes the skull, tonsils and spinal marrow of animals older than 12 months, as well as the spleen and ileum (the third section of the small intestine before the large intestine) of animals of all age classes. The regulation has the goal of preventing the possible introduction of TSE-infected material to the food and feed chain. The transmissible spongiform encephalopathies (TSE) include BSE in cattle and scrapie in sheep and goats. In a joint opinion, the Federal Institute for Risk Assessment (BfR) and Friedrich Loeffler Institute (FLI) dealt with the question of whether the specified risk material of small ruminants, which include sheep and goats, still poses a TSE risk. The institutes came to the conclusion that the transfer of the disease via specified risk material is possible, even in countries with low incidences of TSE. The decree to remove and destroy the specified risk material from sheep and goats should therefore continue to be upheld throughout the entire EU. Link: http://www.bfr.bund.de/cm/349/protection-against-tse-specified-risk-material-should-continue-to-be-removed-from-small-ruminants-and-destreoyed.pdf
description: DE; PDF; efsa-focal-point@bfr.bund.de
Next-to-leading order QCD corrections to $W γ$ production in association with two jets
Creators: name: Campanario, Francisco
name: Kerner, Matthias
name: Ninh, Le Duc
name: Zeppenfeld, Dieter
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The QCD-induced $W^\pm γ$ production channels in association with two jets are computed at next-to-leading order QCD accuracy. The W bosons decay leptonicly and full off-shell and finite width effects as well as spin correlations are taken into account. These processes are important backgrounds to beyond Standard Model physics searches and also relevant to test the nature of the quartic gauge couplings of the Standard Model. The next-to-leading order corrections reduce the scale uncertainty significantly and show a non-trivial phase space dependence. Our code will be publicly available as part of the parton level Monte Carlo program VBFNLO.
description: 9 pages, 5 figures, 6 tables. arXiv admin note: text overlap with arXiv:1311.6738
Delayed Development of Cool Plasmas in X-ray Flares from kappa1 Ceti
Creators: name: Hamaguchi, Kenji
name: Reep, Jeffrey W.
name: Airapetian, Vladimir
name: Toriumi, Shin
name: Gendreau, Keith C.
name: Arzoumanian, Zaven
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The Neutron star Interior Composition ExploreR (NICER) X-ray observatory observed two powerful X-ray flares equivalent to superflares from the nearby young solar-like star, kappa1 Ceti, in 2019. NICER follows each flare from the onset through the early decay, collecting over 30 cts s-1 near the peak, enabling a detailed spectral variation study of the flare rise. The flare in September varies quickly in ~800 sec, while the flare in December has a few times longer timescale. In both flares, the hard band (2-4 keV) light curves show typical stellar X-ray flare variations with a rapid rise and slow decay, while the soft X-ray light curves, especially of the September flare, have prolonged flat peaks. The time-resolved spectra require two temperature plasma components at kT ~0.3-1 keV and ~2-4 keV. Both components vary similarly, but the cool component lags by ~200 sec with a 4-6 times smaller emission measure (EM) compared to the hot component. A comparison with hydrodynamic flare loop simulations indicates that the cool component originates from X-ray plasma near the magnetic loop footpoints, which mainly cools via thermal conduction. The time lag represents the travel time of the evaporated gas through the entire flare loop. The cool component has several times smaller EM than its simulated counterpart, suggesting a suppression of conductive cooling possibly by the expansion of the loop cross-sectional area or turbulent fluctuations. The cool component's time lag and small EM ratio provide important constraints on the flare loop geometry.
description: 21 pages, 12 figures, to be published in the Astrophysical Journal
Antimicrobial Resistance: Carbapenemases-producing bacteria in livestock
Creators: name: German Federal Institute For Risk Assessment (BfR)
Publisher: name: Zenodo
Year: 2016
Subjects: subject: carbapenemase
subject: antimicrobial resistance
subject: http://id.agrisemantics.org/gacs/C5232
subject: http://id.agrisemantics.org/gacs/C11729

description: Carbapenems are antibiotics authorised for the treatment of humans and categorised by the World Health Organisation as critically important antimicrobials. Antibiotics of this kind should only be administered when there are strict indications, i.e. when other antibiotics are no longer effective. The most common mechanism that leads to the resistance of bacteria to carbapenems is the formation of enzymes known as carbapenemases. Pathogens with this type of resistance can no longer be successfully treated with carbapenem-antibiotics. The Federal Institute for Risk Assessment (BfR) first detected carbapenemases-producing enterobacteria in samples from livestock in 2011 and then again in 2015 and 2016. This resistance to carbapenems can be passed on between various bacteria. Theoretically, consumers can pick up bacteria with these resistance properties via food produced from animals or through direct contact with the animals themselves. If these people then require treatment with antibiotics, these bacteria could pose a problem as a number of antimicrobials might not work against the infection. The introduction of bacteria of this kind to hospitals could also have severe consequences. For this reason, the spread of carbapenemases-producing bacteria must be prevented wherever possible. Link: http://www.bfr.bund.de/cm/349/antimicrobial-resistance-carbapenemases-producing-bacteria-in-livestock.pdf
description: DE; PDF; efsa-focal-point@bfr.bund.de
title: Interdisziplinarität in der Lehre
Creators: name: Braßler, Mirjam
Publisher: name: Zentrum für Hochschul- und Wissenschaftsdidaktik, Universität Regensburg
Year: 2022

description: Der Artikel zeigt Methoden auf, wie interdisziplinäres Lernen in Lehrveranstaltungen erfolgreich gefördert werden kann.
Glaucotrack: Intelligent Eye Health Screening Using Machine Learning
Creators: name: Abdul Majid, Vishwas T R, Suhas M R, Usha R, Mrs.Vinutha M
Publisher: name: Zenodo
Year: 2025

description: Glaucoma is generally a chronic and cumulative optic nerve impairment characterized by the deterioration of the Retinal Ganglionic and their nerve fibers. It is the second most significant cause of eye blindness. The Fund-us Camera is a kind of Modern Visualization Tool used to scrutinize the Anatomy of an eye to determine theglaucoma impairment. The appearance of the optic Cup occupies a prominent role. The cup augments with theextension of glaucoma occupying most of the disc space. The manual examination of the Optic disc and Optic Cup is time-consuming. Also, the disease is often asymptomatic in its early stages, making it complicated to detect glaucoma through Ophthalmic examination. However, the Schema Objects apply a distinct basis for the binary classification of Glaucomatous and Non - Glaucomatous images. To diagnose the same, the proposed model in this scheme algorithm is sufficient to identify glaucoma by achieving a validation accuracy of 80%.
A Strict Test of Stellar Evolution Models: The Absolute Dimensions of Massive Benchmark Eclipsing Binary V578 Mon
Creators: name: Garcia, E. V.
name: Stassun, Keivan G.
name: Pavlovski, K.
name: Hensberge, H.
name: Chew, Y. Gómez Maqueo
name: Claret, A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We determine the absolute dimensions of the eclipsing binary V578 Mon, a detached system of two early B-type stars (B0V + B1V, P$=$2.40848 d) in the star-forming region NGC 2244 of the Rosette Nebula. From the light curve analysis of 40 yr of photometry and the analysis of HERMES spectra, we find radii of $5.41\pm0.04$ Rsun and $4.29\pm 0.05$ Rsun, and temperatures of $ 30000\pm 500$~K and $ 25750\pm 435$ K respectively. We find that our disentangled component spectra for V578 Mon agree well previous spectral disentangling from the literature. We also reconfirm the previous spectroscopic orbit of V578 Mon finding that masses of $ 14.54\pm 0.08$ Msun and $ 10.29\pm 0.06$ Msun are fully compatible with the new analysis. We compare the absolute dimensions to the rotating models of the Geneva and Utrecht groups and the models of Granada group. We find all three sets of models marginally reproduce the absolute dimensions of both stars with a common age within uncertainty for gravity-effective temperature isochrones. However - there are some apparent age discrepancies for the corresponding mass-radius isochrones. Models with larger convective overshoot $>0.35$ worked best. Combined with our previously determined apsidal motion of $0.07089^{+0.00021}_{-0.00013}$ deg cycle$^{-1}$, we compute the internal structure constants (tidal Love number) for the newtonian and general relativistic contribution to the apsidal motion, $\log{k_2}=-1.975\pm0.017$ and $\log{k_2}=-3.412\pm0.018$ respectively. We find the relativistic contribution to the apsidal motion of be small $<4\%$. We find that the prediction of $\log{k_{\rm 2,theo}}=-2.005\pm0.025$ of the Granada models fully agrees with our observed $\log{k_2}$.
description: accepted for publication in AJ 05/02/2014
Chaotic Planar Piecewise Smooth Vector Fields With Non Trivial Minimal Sets
Creators: name: Buzzi, Claudio
name: de Carvalho, Tiago
name: Euzebio, Rodrigo
Publisher: name: arXiv
Year: 2014
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: In this paper some aspects on chaotic behavior and minimality in planar piecewise smooth vector fields theory are treated. The occurrence of non-deterministic chaos is observed and the concept of orientable minimality is introduced. It is also investigated some relations between minimality and orientable minimality and observed the existence of new kinds of non-trivial minimal sets in chaotic systems. The approach is geometrical and involve the ordinary techniques of non-smooth systems.
description: arXiv admin note: text overlap with arXiv:1307.6825
Atlas of dynamic spectra of fast radio burst FRB 20201124A
Creators: name: Wang, Bo-Jun
name: Xu, Heng
name: Jiang, Jin-Chen
name: Xu, Jiang-Wei
name: Niu, Jia-Rui
name: Chen, Ping
name: Lee, Ke-Jia
name: Zhang, Bing
name: Zhu, Wei-Wei
name: Dong, Su-Bo
name: Zhang, Chun-Feng
name: Fu, Hai
name: Zhou, De-Jiang
name: Zhang, Yong-Kun
name: Wang, Pei
name: Feng, Yi
name: Li, Ye
name: Li, Dong-Zi
name: Lu, Wen-Bin
name: Yang, Yuan-Pei
name: Caballero, R. N.
name: Cai, Ce
name: Chen, Mao-Zheng
name: Dai, Zi-Gao
name: Esamdin, A.
name: Gan, Heng-Qian
name: Han, Jin-Lin
name: Hao, Long-Fei
name: Huang, Yu-Xiang
name: Jiang, Peng
name: Li, Cheng-Kui
name: Li, Di
name: Li, Hui
name: Li, Xin-Qiao
name: Li, Zhi-Xuan
name: Liu, Zhi-Yong
name: Luo, Rui
name: Men, Yun-Peng
name: Niu, Chen-Hui
name: Peng, Wen-Xi
name: Qian, Lei
name: Song, Li-Ming
name: Sun, Jing-Hai
name: Wang, Fa-Yin
name: Wang, Min
name: Wang, Na
name: Wang, Wei-Yang
name: Wu, Xue-Feng
name: Xiao, Shuo
name: Xiong, Shao-Lin
name: Xu, Yong-Hua
name: Xu, Ren-Xin
name: Yang, Jun
name: Yang, Xuan
name: Yao, Rui
name: Yi, Qi-Bin
name: Yue, You-Ling
name: Yu, Dong-Jun
name: Yu, Wen-Fei
name: Yuan, Jian-Ping
name: Zhang, Bin-Bin
name: Zhang, Song-Bo
name: Zhang, Shuang-Nan
name: Zhao, Yi
name: Zheng, Wei-Kang
name: Zhu, Yan
name: Zou, Jin-Hang
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Fast radio bursts (FRBs) are highly dispersed millisecond-duration radio bursts, of which the physical origin is still not fully understood. FRB 20201124A is one of the most actively repeating FRBs. In this paper, we present the collection of 1863 burst dynamic spectra of FRB 20201124A measured with the Five-hundred-meter Aperture Spherical radio Telescope (FAST). The current collection, taken from the observation during the FRB active phase from April to June 2021, is the largest burst sample detected in any FRB so far. The standard PSRFITs format is adopted, including dynamic spectra of the burst, and the time information of the dynamic spectra, in addition, mask files help readers to identify the pulse positions are also provided.
CP Violation from Finite Groups
Creators: name: Chen, Mu-Chun
name: Fallbacher, Maximilian
name: Mahanthappa, K. T.
name: Ratz, Michael
name: Trautner, Andreas
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss the origin of CP violation in settings with a discrete (flavor) symmetry $G$. We show that physical CP transformations always have to be class-inverting automorphisms of $G$. This allows us to categorize finite groups into three types: (i) Groups that do not exhibit such an automorphism and, therefore, in generic settings, explicitly violate CP. In settings based on such groups, CP violation can have pure group-theoretic origin and can be related to the complexity of some Clebsch-Gordan coefficients. (ii) Groups for which one can find a CP basis in which all the Clebsch-Gordan coefficients are real. For such groups, imposing CP invariance restricts the phases of coupling coefficients. (iii) Groups that do not admit real Clebsch-Gordan coefficients but possess a class-inverting automorphism that can be used to define a proper (generalized) CP transformation. For such groups, imposing CP invariance can lead to an additional symmetry that forbids certain couplings. We make use of the so-called twisted Frobenius-Schur indicator to distinguish between the three types of discrete groups. With $Δ(27)$, $T^{\prime}$, and $Σ(72)$ we present one explicit example for each type of group, thereby illustrating the CP properties of models based on them. We also show that certain operations that have been dubbed generalized CP transformations in the recent literature do not lead to physical CP conservation.
description: 45 pages, 3 figures
Mandatsführung und Case Management: Ein analytischer Abgleich
Creators: name: Fausch, Daniel
Publisher: name: Zenodo
Year: 2022

description: Ausgehend von der Entscheidungsfreiheit hinsichtlich der Umsetzung eines Anordnungsentscheids durch die KESB kann Case Management in der Mandatsführung als Handlungskonzept respektive als Methode angewandt werden. Anhand dieser Literaturarbeit untersucht Daniel Fausch in der vorliegenden Bachelor-Arbeit mit dem Titel «Mandatsführung und Case Management – ein analytischer Abgleich» Übereinstimmungen und Abweichungen von Mandatsführung und Case Management. Daraus wird ein möglicher Mehrwert von Case Management für die Mandatsführung ermittelt. Sowohl Mandatsführung als auch Case Management orientieren sich an der (Berufs-)ethik, der Selbstbestimmung und dem Empowerment, der Subsidiarität sowie der Bedarfs-, Bedürfnis- und Einzelfallorientierung. Weitere Gemeinsamkeiten sind die Orientierung an Phasenmodellen und Handlungsplänen sowie die Leistungskoordination respektive die Aufgabendelegation. Mandatsführung und Case Management unterscheiden sich im Leitgedanken, in den Voraussetzungen sowie im staatlichen Eingriff in die Persönlichkeitsrechte, auch gegen den Willen der Klientel. Ein möglicher Mehrwert von Case Management ergibt sich, indem mithilfe eines Phasenmodells Komplexität erkannt und reduziert wird. Dadurch kann eher auf die Lebenswelt und die Bedürfnisse der Klientel eingegangen werden, um möglichst passgenaue Unterstützungsleistungen auf den Einzelfall anzubieten. Angesichts der steigenden Komplexität von Fällen, bei gleichbleibenden zeitlichen Ressourcen für deren Bearbeitung, könnte der Bedarf von Case Management in der Mandatsführung künftig zur Vermeidung von Doppelbetreuung, Überbetreuung und unangemessener Betreuung steigen.
description: + Code Diss LU: hslusa basa + Fussnote: Bachelor-Arbeit, Hochschule Luzern – Soziale Arbeit, Studienrichtung Sozialarbeit, 2022 + NL-Code: NLLUHSA202209
Aperture Effects on Spectroscopic Galaxy Activity Classification
Creators: name: Maragkoudakis, A.
name: Zezas, A.
name: Ashby, M. L. N.
name: Willner, S. P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Activity classification of galaxies based on long-slit and fiber spectroscopy can be strongly influenced by aperture effects. Here we investigate how activity classification for 14 nearby galaxies depends on the proportion of the host galaxy's light that is included in the aperture. We use both observed long-slit spectra and simulated elliptical-aperture spectra of different sizes. The degree of change varies with galaxy morphology and nuclear activity type. Starlight removal techniques can mitigate but not remove the effect of host galaxy contamination in the nuclear aperture. Galaxies with extra-nuclear star formation can show higher [O III] λ5007/Hβ ratios with increasing aperture, in contrast to the naive expectation that integrated light will only dilute the nuclear emission lines. We calculate the mean dispersion for the diagnostic line ratios used in the standard BPT diagrams with respect to the central aperture of spectral extraction to obtain an estimate of the uncertainties resulting from aperture effects.
description: 16 pages, 10 figures, 2 tables. Accepted for pubblication in MNRAS
Variational Polaron Method for Bose-Bose Mixtures
Creators: name: Benjamin, David
name: Demler, Eugene
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study degenerate mixtures of "heavy" bosons and "light" superfluid bosons using a variational polaron transformation. We consider the Mott insulator-superfluid transition of the heavy species and find that at $T=0$ interaction favors the superfluid phase of the heavy species. Our analytic results agree well with numerically exact quantum Monte Carlo simulations in two dimensions. We then show that in three dimensions the variational polaron transformation can be combined with a Gutzwiller approximation to give good results.
description: 5 pages, 2 figures
Forming Circumbinary Planets: N-body Simulations of Kepler-34
Creators: name: Lines, Stefan
name: Leinhardt, Zoe M.
name: Paardekooper, Sijme-Jan
name: Baruteau, Clement
name: Thebault, Philippe
Publisher: name: arXiv
Year: 2014
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Observations of circumbinary planets orbiting very close to the central stars have shown that planet formation may occur in a very hostile environment, where the gravitational pull from the binary should be very strong on the primordial protoplanetary disk. Elevated impact velocities and orbit crossings from eccentricity oscillations are the primary contributors towards high energy, potentially destructive collisions that inhibit the growth of aspiring planets. In this work, we conduct high resolution, inter-particle gravity enabled N-body simulations to investigate the feasibility of planetesimal growth in the Kepler-34 system. We improve upon previous work by including planetesimal disk self-gravity and an extensive collision model to accurately handle inter-planetesimal interactions. We find that super-catastrophic erosion events are the dominant mechanism up to and including the orbital radius of Kepler-34(AB)b, making in-situ growth unlikely. It is more plausible that Kepler-34(AB)b migrated from a region beyond 1.5 AU. Based on the conclusions that we have made for Kepler-34 it seems likely that all of the currently known circumbinary planets have also migrated significantly from their formation location with the possible exception of Kepler-47(AB)c.
description: 6 pages, 5 figures, accepted for publication in ApJL
Three New Spiral Galaxies with Active Nuclei Producing Double Radio Lobes
Creators: name: Gao, Xuyang
name: Yuan, Zhongsheng
name: Han, Jinlin
name: Wen, Zhonglue
name: Shan, Susu
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Double radio lobes are generally believed to be produced by active nuclei of elliptical galaxies. However, several double-lobed radio sources have been solidly found to be associated with spiral galaxies. By cross-matching $\sim9\times10^5$ spiral galaxies selected from the Sloan Digital Sky Survey DR8 data with the full 1.4-GHz radio source catalogs of NRAO VLA Sky Survey and Faint Images of Radio Sky at Twenty-centimeters, we identify three new spiral galaxies: J0326$-$0623, J1110+0321 and J1134+3046 that produce double radio lobes, and five double-lobed spirals previously known. By combining the newly discovered and all the other known cases in literature, we confirm the relation that more massive spirals could produce more powerful large-scale radio jets. We find that most of these spiral galaxies are located in a galaxy group or a poor cluster, in which the environment is denser than in the field, and about half of them are the central brightest galaxies in their parent system. We therefore suggest that the environment is one of the key factors for a spiral to produce double radio lobes.
description: typos corrected, accepted for publication in RAA
Formation Of The Lyman Continuum During Solar Flares
Creators: name: McLaughlin, Shaun A.
name: Milligan, Ryan O.
name: Kerr, Graham S.
name: Monson, Aaron J.
name: Simões, Paulo J. A.
name: Mathioudakis, Mihalis
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The Lyman Continuum (LyC; $<911.12$Å) forms at the top of the chromosphere in the quiet-Sun, making LyC a powerful tool for probing the chromospheric plasma during solar flares. To understand the effects of non-thermal energy deposition in the chromosphere during flares, we analysed LyC profiles from a grid of field-aligned radiative hydrodynamic models generated using the RADYN code as part of the F-CHROMA project. The spectral response of LyC, the temporal evolution of the departure coefficient of hydrogen, $b_1$, and the color temperature, $T_c$, in response to a range of non-thermal electron distribution functions, were investigated. The LyC intensity was seen to increase by 4-5.5 orders of magnitude during solar flares, responding most strongly to the non-thermal electron flux of the beam. Generally, $b_1$ decreased from $10^2$-$10^3$ to closer to unity during solar flares, indicating a stronger coupling to local conditions, while $T_c$ increased from $8$-$9$kK to $10$-$16$kK. $T_c$ was found to be approximately equal to the electron temperature of the plasma when $b_1$ was at a minimum. Both optically thick and optically thin components of LyC were found in agreement with the interpretation of recent observations. The optically thick layer forms deeper in the chromosphere during a flare compared to quiescent periods, whereas the optically thin layers form at higher altitudes due to chromospheric evaporation, in low-temperature, high-density regions propagating upwards. We put these results in the context of current and future missions.
description: Accepted for publication in The Astrophysical Journal: 18 pages, 16 Figures