cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Itinerant G-type antiferromagnet SrCr2As2 studied by magnetization, heat capacity, electrical resistivity, and NMR measurements
Creators: name: Ding, Q. -P.
name: Pakhira, Santanu
name: Sangeetha, N. S.
name: Krenkel, E. H.
name: Timmons, E. I.
name: Tanatar, M. A.
name: Prozorov, R.
name: Johnston, D. C.
name: Furukawa, Y.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The physical properties of itinerant antiferromagnetic (AFM) SrCr$_2$As$_2$ with body-centered tetragonal ThCr$_2$Si$_2$ structure were investigated in single crystalline and polycrystalline forms by electrical resistivity $ρ$, heat capacity $C_{\rm p}$, magnetic susceptibility $χ$ versus temperature~$T$ and magnetization $M$ versus applied magnetic field $H$ isotherm measurements as well as $^{75}$As and $^{53}$Cr nuclear magnetic resonance (NMR) measurements in the wide temperature range $T$ = 1.6--900 K. From the $χ(T)$ and $^{75}$As NMR measurements, the G-type AFM state below $T_{\rm N}$ = 615(15) K has been determined, consistent with the previous neutron-diffraction measurements. Direct evidence of magnetic ordering of the Cr spins was shown by the observation of the $^{53}$Cr NMR spectrum under $H$ = 0. From the $χ(T)$ measurements on single-crystal SrCr$_2$As$_2$ under the two different magnetic field directions $H||ab$ and $H||c$ in the AFM state, the Cr ordered moments are shown to align along the $c$ axis in the G-type AFM state. The metallic state is directly evidenced by the $ρ$, $C_{\rm p}$, and NMR measurements, and the density of states at the Fermi energy ${\cal D}(E_{\rm F})$ in the AFM state is estimated to be 7.53 states/eV f.u. for both spin directions which is almost twice the bare ${\cal D}(E_{\rm F})$ estimated from first-principles calculations, suggesting an enhancement of the conduction-carrier mass by a factor of two in the AFM state. The ${\cal D}(E_{\rm F})$ is found to be nearly constant below at least 100 K and is independent of $H$. The $ρ(T)$ is found to show $T$-linear behavior above $T_{\rm N}$ and exhibits positive curvature below $T_{\rm N}$ where significant loss of spin-disorder scattering upon magnetic ordering is observed.
description: 14 pages, 12 figures, accepted for publication in Phys. Rev. B
Rubin, Evans, & Wilkinson - Data Package
Creators: name: Rubin, Mark
Publisher: name: figshare
Year: 2016
Subjects: subject: 170113 Social and Community Psychology
subject: FOS: Psychology

description: This data package contains the research survey, deidentified data set, associated SPSS syntax file, variable naming information, and additional results tables for the following research article: Rubin, M., Evans, O., & Wilkinson, R. B. (2016). A longitudinal study of the relations between university students’ subjective social status, social contact with university friends, and mental health and well-being. Journal of Social and Clinical Psychology, 35, 722-737. doi: 10.1521/jscp.2016.35.9.722 If you are interested in analysing the data from this data set, then please contact Mark.Rubin@newcastle.edu.au.
Insecticidal activity of a novel fatty acid amide derivative from Streptomyces species against Helicoverpa armigera
Creators: name: Gopalakrishnan, Subramaniam
name: Vijayabharathi Rajendran
name: Sathya Arumugam
name: Sharma, Hari C.
name: Vadlamudi, Srinivas
name: Bhimineni, Ratna Kumari
name: Gonzalez, Susana V.
name: Melø, Torunn M.
name: Nebojsa Simic
Publisher: name: Taylor & Francis
Year: 2016
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: Science Policy
subject: Plant Biology

description: Helicoverpa armigera, an important pest causes serious damage to grain legumes. The main objective of this study was to isolate and identify the metabolite against H. armigera from a previously characterised Streptomyces sp. CAI-155. The culture filtrate of CAI-155 was extracted using Diaion HP-20 and the active fractions were fractionated on Silica and C18 column chromatography. The C18 active fraction was further fractionated on Silica gel 60 F254 thin layer chromatography (TLC). The most active fraction (Rf 0.64) purified from TLC led to the identification of a novel metabolite N-(1-(2,2-dimethyl-5-undecyl-1,3-dioxolan-4-yl)-2-hydroxyethyl)stearamide by spectral studies. The purified metabolite showed 70–78% mortality in 2nd instar H. armigera by diet impregnation assay, detached leaf assay and greenhouse assay. The LD50 and LD90 values of the purified metabolite were 627 and 2276 ppm, respectively. Hence, this novel metabolite can be exploited for pest management in future.
Flavone C-glycosides from Trichuriella monsoniae (L.f.) Bennet
Creators: name: Rajeswari Chiluka
name: Gamble, Allan B.
name: Lucas, Nigel T.
name: Hawkins, Bill C.
name: Bhumkar, Anand
name: Prabhakar S. Achanta
name: Bobbala, Ravi Kumar
Publisher: name: Taylor & Francis
Year: 2016
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Molecular Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified

description: In the first phytochemical investigation of Trichuriella monsoniae, three known flavonoidal C-glycosides, isoswertisin 1, 2″-O-β-d-galactosyl isoswertisin 2 and 2″-O-β-d-xylosyl isoswertisin 3 were isolated from the methanolic extract of the whole plant. Their structures were elucidated by extensive NMR spectroscopic studies including 2D NMR and HRMS, and the structure of 2 was supported by single crystal X-ray data studies. Further, NMR assignments for 3 are being reported for the first time.
Emergence of electronic modes by doping Kondo insulators in the Kondo lattice and periodic Anderson models
Creators: name: Kohno, Masanori
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Heavy-fermion or Kondo lattice materials are considered to be typical strongly correlated systems, for which mean-field approximations have shown that the Coulomb interaction increases the effective mass and narrows the band gap. In this paper, to clarify interaction effects on the electronic excitation, the spectral function of the Kondo lattice and periodic Anderson models is studied around Kondo insulators in the strong-coupling regime, by using the non-Abelian dynamical density-matrix renormalization group method and perturbation theory. Upon doping a Kondo insulator, an electronic mode emerges in the Kondo insulating gap, exhibiting the momentum-shifted magnetic dispersion relation. Although the ground-state properties are similar to those of a doped band insulator, the emergence of the electronic mode reflecting spin-charge separation of the Kondo insulator is a crucial interaction effect that allows us to regard the Kondo-insulator--metal transition as a type of Mott transition. In addition, electronic modes emerge even in the high-energy regime by doping in the periodic Anderson model. These strong-correlation effects have not been expected in conventional mean-field approximations and would bring a different perspective on heavy-fermion or Kondo lattice systems.
description: 16 pages, 6 figures, 1 table
Deforming Self and Other: On Nouvel's Arab Institute
Creators: name: Biln, John
Publisher: name: figshare
Year: 2016
Subjects: subject: 120103 Architectural History and Theory
subject: FOS: Civil engineering

description: This is a pre-print version of the following article, published in print form. Biln, John. "(de)Forming Self and Other.” In Postcolonial Space(s): Essays on Other Architectural Cultures, edited by Gulsum Baydar Nalbantoglu and Wong Chong Thai: 25-38. New York: Princeton Architectural Press, 1997.This essay reviews Jean Nouvel’s Arab Institute building in Paris. The building is intended to support and house various forms of cultural exchange between France and the Arab world. It is explicitly intended to bridge these two significant cultures, which share long mutual histories while they embody incommensurable differences. The essay argues that Nouvel’s building resists reducing cultural differences between occident and orient to an expression of abstract identity in form and space. At every turn, the building is revealed to be self-conscious of its Western provenance and at the same time ceaselessly gesturing to its Arab ‘other’. The Arab Institute works to provoke a ‘self-differencing’ in which established Western identifications are disrupted and held open, while Arab identifications are just as insistently held distant. This work involves bodily occupation, spatial choreography, vision and sensation. Indeed, the force of Nouvel's work derives expressly from its engagement with those moments of identity constitutive of what we call a ‘self’. The Arab Institute employs architectural configuration – form itself – to produce a fragile and empty space in which confidence in our social being is momentarily bracketed.
Mapping Out the Zero-Temperature Phase Diagram of a 1D Charge-4e Superconductor
Creators: name: Robertson, Michael
Publisher: name: Stanford Digital Repository
Year: 2026
Subjects: charge-4e superconductivity
Z4 parafermions
1D superconductor
DMRG
topological quantum computing
topological phases

description: Quasiparticles known as Z4 parafermions are a strong qubit candidate for topological quantum computing, which would allow for greater robustness to error. Related Z2 parafermions (Majorana fermions) are known to emerge at the boundary of the Kitaev chain – a 1D charge-2e superconductor. Motivated by this, we suggest that a 1D charge-4e superconductor might be a natural system to look for Z4 parafermions. In this paper, we use a combination of numerical and analytical techniques to investigate the zero-temperature phase diagram of such a system. Specifically, our system is the 1D Fermi-Hubbard model with chemical potential and a charge-4e superconducting term involving neighboring sites. We first present some analytical results in the strongly coupled limits of our system, finding just trivial phases but some possibility of topological phases emerging. We then present a small region of the phase diagram in the nonperturbative regime mapped out using numerical DMRG (density matrix renormalization group) techniques, indicating a symmetry-breaking transition from Z4 to Z2, along with a potential topological phase transition. This study seeks to advance our understanding of where useful quasiparticles might emerge, and additionally furthers our understanding of exotic charge-4e superconductors – a generically hard problem to approach analytically.
Food web effects of titanium dioxide nanoparticles in an outdoor freshwater mesocosm experiment
Creators: name: Jovanović, Boris
name: Bezirci, Gizem
name: Çağan, Ali Serhan
name: Coppens, Jan
name: Levi, Eti E.
name: Oluz, Zehra
name: Tuncel, Eylül
name: Duran, Hatice
name: Beklioğlu, Meryem
Publisher: name: Taylor & Francis
Year: 2016
Subjects: subject: Molecular Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences

description: Over the course of 78 days, nine outdoor mesocosms, each with 1350 L capacity, were situated on a pontoon platform in the middle of a lake and exposed to 0 μg L−1 TiO2, 25 μg L−1 TiO2 or 250 μg L−1 TiO2 nanoparticles in the form of E171 TiO2 human food additive five times a week. Mesocosms were inoculated with sediment, phytoplankton, zooplankton, macroinvertebrates, macrophytes and fish before exposure, ensuring a complete food web. Physicochemical parameters of the water, nutrient concentrations, and biomass of the taxa were monitored. Concentrations of 25 μg L−1 TiO2 and 250 μg L−1 TiO2 caused a reduction in available soluble reactive phosphorus in the mesocosms by 15 and 23%, respectively, but not in the amount of total phosphorus. The biomass of Rotifera was significantly reduced by 32 and 57% in the TiO2 25 μg L−1 and TiO2 250 μg L−1 treatments, respectively, when compared to the control; however, the biomass of the other monitored groups—Cladocera, Copepoda, phytoplankton, macrophytes, chironomids and fish—remained unaffected. In conclusion, environmentally relevant concentrations of TiO2 nanoparticles may negatively affect certain parameters and taxa of the freshwater lentic aquatic ecosystem. However, these negative effects are not significant enough to affect the overall function of the ecosystem, as there were no cascade effects leading to a major change in its trophic state or primary production.
Fracture properties and response surface methodology model of alkali-slag concrete under freeze-thaw cycles.pdf
Creators: name: Li, Qixuan
name: Liangcai Cai
name: Yawei Fu
name: Haifu Wang
name: Zou, Yong
Publisher: name: figshare
Year: 2016
Subjects: subject: 90503 Construction Materials
subject: FOS: Civil engineering
subject: 91202 Composite and Hybrid Materials
subject: FOS: Materials engineering
subject: Mechanics
subject: 30601 Catalysis and Mechanisms of Reactions
subject: FOS: Chemical sciences
subject: 30307 Theory and Design of Materials
subject: Computer Software
subject: FOS: Computer and information sciences
subject: 80110 Simulation and Modelling
subject: Statistics
subject: FOS: Mathematics
subject: 10301 Numerical Analysis

description: In this paper, response surface methodology is used to study alkali-slag concrete(ASC) fracture toughness; the influence on fracture toughness from high to low is slag content, age and sol ratio, the interaction of slag content and age is the most significant; initiation fracture toughness is about 50%~70% of unstable fracture toughness, crack initiation should be the warning indicator of ASC structure; fracture toughness decreases with freeze-thaw times increasing, its declining rate and degree increase with sol ratio and slag content; increase of sol ratio reduces internal density and hinders depolymerization. Cementitious material content reduces ASC toughness.
Deep ASKAP EMU Survey of the GAMA23 field: Properties of radio sources
Creators: name: Gürkan, Gülay
name: Prandoni, I.
name: O'Brien, A.
name: Raja, W.
name: Marchetti, L.
name: Vaccari, M.
name: Driver, S.
name: Taylor, E.
name: Franzen, T.
name: Brown, M. J. I.
name: Shabala, S.
name: Andernach, H.
name: Hopkins, A. M.
name: Norris, R. P.
name: Leahy, D.
name: Bilicki, M.
name: Farajollahi, H.
name: Galvin, T.
name: Heald, G.
name: Koribalski, B. S.
name: An, T.
name: Warhurst, K.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present the Australian Square Kilometre Array Pathfinder (ASKAP) observations of the Galaxy and Mass Assembly (GAMA)-23h field. The survey was carried out at 887.5 MHz and covers a 83 square degree field. We imaged the calibrated visibility data, taken as part of the Evolutionary Mapping of Universe (EMU) Early Science Programme, using the latest version of the ASKAPSoft pipeline. The final mosaic has an angular resolution of 10 arcsec and a central rms noise of around 38 $μ$Jy beam$^{-1}$. The derived radio source catalogue has 39812 entries above a peak flux density threshold of 5$σ$. We searched for the radio source host galaxy counterparts using the GAMA spectroscopic (with an i-band magnitude limit of 19.2 mag) and multi-wavelength catalogues that are available as part of the collaboration. We identified hosts with GAMA spectroscopic redshifts for 5934 radio sources. We describe the data reduction, imaging, and source identification process, and present the source counts. Thanks to the wide area covered by our survey, we obtain very robust counts down to 0.2 mJy. ASKAP's exceptional survey speed, providing efficient, sensitive and high resolution mapping of large regions of the sky in conjunction with the multi-wavelength data available for the GAMA23 field, allowed us to discover 63 giant radio galaxies. The data presented here demonstrate the excellent capabilities of ASKAP in the pre-SKA era.
description: 18 pages, 15 figures, accepted by MNRAS
Precursors of the RNA-world in space: Detection of ($Z$)-1,2-ethenediol in the interstellar medium, a key intermediate in sugar formation
Creators: name: Rivilla, Víctor M.
name: Colzi, Laura
name: Jiménez-Serra, Izaskun
name: Martín-Pintado, Jesús
name: Megías, Andrés
name: Melosso, Mattia
name: Bizzocchi, Luca
name: López-Gallifa, Álvaro
name: Martínez-Henares, Antonio
name: Massalkhi, Sarah
name: Tercero, Belén
name: de Vicente, Pablo
name: Guillemin, Jean-Claude
name: de la Concepción, Juan García
name: Rico-Villas, Fernando
name: Zeng, Shaoshan
name: Martín, Sergio
name: Requena-Torres, Miguel A.
name: Tonolo, Francesca
name: Alessandrini, Silvia
name: Dore, Luca
name: Barone, Vincenzo
name: Puzzarini, Cristina
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We present the first detection of ($Z$)-1,2-ethenediol, (CHOH)$_2$, the enol form of glycolaldehyde, in the interstellar medium towards the G+0.693-0.027 molecular cloud located in the Galactic Center. We have derived a column density of (1.8$\pm$0.1)$\times$10$^{13}$ cm$^{-2}$, which translates into a molecular abundance with respect to molecular hydrogen of 1.3$\times$10$^{-10}$. The abundance ratio between glycolaldehyde and ($Z$)-1,2-ethenediol is $\sim$5.2. We discuss several viable formation routes through chemical reactions from precursors such as HCO, H$_2$CO, CHOH or CH$_2$CHOH. We also propose that this species might be an important precursor in the formation of glyceraldehyde (HOCH$_2$CHOHCHO) in the interstellar medium through combination with the hydroxymethylene (CHOH) radical.
description: Accepted for publication in The Astrophysical Journal Letters
Chaotic and Clumpy Galaxy Formation in an Extremely Massive Reionization-Era Halo
Creators: name: Spilker, Justin S.
name: Hayward, Christopher C.
name: Marrone, Daniel P.
name: Aravena, Manuel
name: Bethermin, Matthieu
name: Burgoyne, James
name: Chapman, Scott C.
name: Greve, Thomas R.
name: Gururajan, Gayathri
name: Hezaveh, Yashar D.
name: Hill, Ryley
name: Litke, Katrina C.
name: Lovell, Christopher C.
name: Malkan, Matthew A.
name: Murphy, Eric J.
name: Narayanan, Desika
name: Phadke, Kedar A.
name: Reuter, Cassie
name: Stark, Antony A.
name: Sulzenauer, Nikolaus
name: Vieira, Joaquin D.
name: Vizgan, David
name: Weiss, Axel
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The SPT0311-58 system at z=6.900 is an extremely massive structure within the reionization epoch, and offers a chance to understand the formation of galaxies in an extreme peak in the primordial density field. We present 70mas Atacama Large Millimeter/submillimeter Array observations of the dust continuum and CII 158um emission in the central pair of galaxies and reach physical resolution ~100-350pc, among the most detailed views of any reionization-era system to date. The observations resolve the source into at least a dozen kiloparsec-size clumps. The global kinematics and high turbulent velocity dispersion within the galaxies present a striking contrast to recent claims of dynamically cold thin-disk kinematics in some dusty galaxies just 800Myr later at z~4. We speculate that both gravitational interactions and fragmentation from massive parent disks have likely played a role in the overall dynamics and formation of clumps in the system. Each clump individually is comparable in mass to other 6
description: Accepted for publication in ApJ Letters, 9 pages, 5 figures. Interactive versions of Fig. 2 and data products are available at https://github.com/spt-smg/publicdata
PowerSkel: A Device-Free Framework Using CSI Signal for Human Skeleton Estimation in Power Station
Creators: name: Yin, Cunyi
name: Miao, Xiren
name: Chen, Jing
name: Jiang, Hao
name: Yang, Jianfei
name: Zhou, Yunjiao
name: Wu, Min
name: Chen, Zhenghua
Publisher: name: arXiv
Year: 2024
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Safety monitoring of power operations in power stations is crucial for preventing accidents and ensuring stable power supply. However, conventional methods such as wearable devices and video surveillance have limitations such as high cost, dependence on light, and visual blind spots. WiFi-based human pose estimation is a suitable method for monitoring power operations due to its low cost, device-free, and robustness to various illumination conditions.In this paper, a novel Channel State Information (CSI)-based pose estimation framework, namely PowerSkel, is developed to address these challenges. PowerSkel utilizes self-developed CSI sensors to form a mutual sensing network and constructs a CSI acquisition scheme specialized for power scenarios. It significantly reduces the deployment cost and complexity compared to the existing solutions. To reduce interference with CSI in the electricity scenario, a sparse adaptive filtering algorithm is designed to preprocess the CSI. CKDformer, a knowledge distillation network based on collaborative learning and self-attention, is proposed to extract the features from CSI and establish the mapping relationship between CSI and keypoints. The experiments are conducted in a real-world power station, and the results show that the PowerSkel achieves high performance with a PCK@50 of 96.27%, and realizes a significant visualization on pose estimation, even in dark environments. Our work provides a novel low-cost and high-precision pose estimation solution for power operation.
Place and Space in the Song of Songs
Creators: name: Hagedorn, Anselm C.
Publisher: name: Humboldt-Universität zu Berlin
Year: 2015
Subjects: subject: 230 Christentum, christliche Theologie

description: The article investigates the role of space in the Song of Songs. Taking recent theoretical insights into spatiality (M. Foucault, E. Soja, H. Lefebvre) as a starting point for an exegesis of selected passages from Song of Songs (Cant 4,12–5,1; 6,2 f.) it is argued that by using the imagery of the garden and the vineyard, Song of Songs creates spaces that are in between the enclosed world of city and house and the wide-open countryside. Since the protagonists of the Song of Songs move and operate in all of these three spaces, binary opposites are only of a limited usefulness when explaining the structure of social and spatial relationships in the Song. The creation of alternative spaces beyond the public and private or town and countryside dichotomy enables the man and the woman of Song of Songs to contest and re-negotiate boundaries and cultural identity. In a further interpretative step the imagery of garden and vineyard is supplemented by comparative material from the Greek world.
description: Der Beitrag untersucht die Funktion des Raumes im Hohelied. Ausgangspunkt sind raumtheoretische Überlegungen (M. Foucault, E. Soja, H. Lefebvre), die zur Exegese ausgewählter Passagen des Hoheliedes (Cant 4,12–5,1; 6,2 f.) herangezogen werden. So ist es möglich zu zeigen, dass das Hohelied den Garten und den Weinberg benutzt, um Räume zu schaffen, die zwischen der abgeschlossenen Welt der Stadt und der offenen, der freien Natur liegen. Da die Protagonisten sich in allen drei Räumen bewegen, sind binäre Interpretationsmodelle der Struktur der sozialen und räumlichen Beziehungen nur bedingt hilfreich. Indem sog. Zwischenräume geschaffen werden, können der Mann und die Frau im Hohelied die Grenzen der eigenen kulturellen Identität verschieben. Im Rahmen eines kulturellen Vergleichs werden die Bilder und Konzeptionen mit vergleichbarem Material aus dem griechischsprachigen Raum ergänzt.
description: Cet article est une enquête sur la fonction de l’espace dans le Cantique des Cantiques. En partant des éléments théoriques sur la spatialité (M. Foucault, E. Soja, H. Lefebvre), l’exégèse de certains passages choisis (Ca 4,12–5,1; 6,2 f.) montrera qu’en utilisant l’imagerie du jardin et de la vigne, le Cantique des Cantiques crée des espaces, qui se situent entre le monde clos des villes ou des maisons et la campagne vaste et ouverte. Comme les protagonistes du Cantique des Cantiques se déplacent entre ces trois espaces, les oppositions binaires ne sont pas très utiles quand il faut expliquer la structure sociale et spatiale dans le Cantique. La création d’espaces alternatifs, au-delà de la dichotomie du publique et du privé ou de la ville et de la campagne, permet à la femme et à l’homme du Cantique des Cantiques de contester et de renégocier les frontières et l’identité culturelle. Dans un effort d’interprétation supplémentaire, l’imagerie du jardin et de la vigne est complétée avec du matériel comparatif tiré du monde grec.
Detection of strong scattering close to the eclipse region of PSR B1957+20
Creators: name: Bai, J. T.
name: Dai, S.
name: Zhi, Q. J.
name: Coles, W. A.
name: Li, D.
name: Zhu, W. W.
name: Hobbs, G.
name: Qiao, G. J.
name: Wang, N.
name: Yuan, J. P.
name: Filipovic, M. D.
name: Wang, J. B.
name: Pan, Z. C.
name: Shang, L. H.
name: Dang, S. J.
name: Wang, S. Q.
name: Miao, C. C.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present the first measurement of pulse scattering close to the eclipse region of PSR B1957+20, which is in a compact binary system with a low-mass star. We measured pulse scattering time-scales up to 0.2 ms close to the eclipse and showed that it scales with the dispersion measure (DM) excess roughly as $τ\proptoΔ{\rm DM}^{2}$. Our observations provide the first evidence of strong scattering due to multi-path propagation effects in the eclipsing material. We show that Kolmogorov turbulence in the eclipsing material with an inner scale of $\sim100$ m and an outer scale of the size of the eclipse region can naturally explain the observation. Our results show that the eclipsing material in such systems can be highly turbulent and suggest that scattering is one of the main eclipsing mechanisms at around 1.4 GHz.
description: 8 pages, 4 figures, MNRAS accepted
A radial limit on polar circumbinary orbits from general relativity
Creators: name: Lepp, Stephen
name: Martin, Rebecca G.
name: Childs, Anna C.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A particle orbiting a misaligned eccentric orbit binary undergoes nodal precession either around the binary angular momentum vector (a circulating orbit) or around a stationary inclination (a librating orbit). In the absence of general relativity, the stationary inclination is inclined by 90 degrees to the binary angular momentum vector (aligned with the binary eccentricity vector) and does not depend on the particle semi-major axis. General relativity causes apsidal precession of the binary orbit. Close to the binary, the behaviour of the particle is not significantly affected, a librating particle precesses with the binary. However, we find that the stationary inclination and the minimum inclination required for libration both increase with the particle semi-major axis. There is a critical radius beyond which there are no librating orbits, only circulating orbits, and therefore there is a maximum orbital radius for a stationary polar orbiting body. The critical radius is within planet forming regions around binaries with semi-major axis <= 1 au. This has implications for the search for misaligned circumbinary planets and the radial extent of polar circumbinary disks.
description: Accepted for publication in ApJL
Multiferroic van der Waals heterostructure FeCl$_2$/Sc$_2$CO$_2$: Nonvolatile electrically switchable electronic and spintronic properties
Creators: name: Cao, Liemao
name: Deng, Xiaohui
name: Zhou, Guanghui
name: Liang, Shi-Jun
name: Nguyen, Chuong V.
name: Ang, L. K.
name: Ang, Yee Sin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Multiferroic van der Waals (vdW) heterostrucutres offers an exciting route towards novel nanoelectronics and spintronics device technology. Here we investigate the electronic and transport properties of multiferroic vdW heterostructure composed of ferromagnetic FeCl$_2$ monolayer and ferroelectric Sc$_2$CO$_2$ monolayer using first-principles density functional theory and quantum transport simulations. We show that FeCl$_2$/Sc$_2$CO$_2$ heterostructure can be reversibly switched from semiconducting to half-metallic behavior by electrically modulating the ferroelectric polarization states of Sc$_2$CO$_2$. Intriguingly, the half-metallic phase exhibits a Type-III broken gap band alignment, which can be beneficial for tunnelling field-effect transistor application. We perform a quantum transport simulation, based on a \emph{proof-of-concept} two-terminal nanodevice, to demonstrate all-electric-controlled valving effects uniquely enabled by the nonvolatile ferroelectric switching of the heterostructure. These findings unravels the potential of FeCl$_2$/Sc$_2$CO$_2$ vdW heterostructures as a building block for designing a next generation of ultimately compact information processing, data storage and spintronics devices.
description: 9 pages, 5 figures, accepted for publication in Physical Review B (2022)
Melodic Description of Audio Signals for Music Content Processing
Creators: name: Gómez, Emilia
Publisher: name: Zenodo
Year: 2002

description: The goal of this work is to review how melodic aspects of music are represented in computer applications, and how these representations are extracted from audio signals. This review will serve to define different levels of melodic description. We will use this description scheme to represent melodic aspects of audio in a specific application context, the Sound Palette application, a software tool for content-based analysis and transformations. We will also implement and evaluate some techniques for extracting some of these melodic features.
Gravitational wave non-linearities and pulsar-timing array angular correlations
Creators: name: Tasinato, Gianmassimo
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Several pulsar-timing array (PTA) collaborations are finding tantalising hints for a stochastic gravitational wave background signal in the nano-Hertz regime. So far, though, no convincing evidence for the expected Hellings-Downs quadrupolar correlations has been found. While this issue might get fixed at the light of more accurate, forthcoming data, it is important to keep an eye open on different possibilities, and explore scenarios able to produce different types of PTA angular correlations. We point out that a stationary non-Gaussian component to the gravitational wave background can modulate the 2-point PTA overlap reduction function, adding contributions that can help in fitting the angular distribution of PTA data. We discuss possible sources for such non-Gaussian signal in terms of cosmological processes occurring after inflation ends, and we investigate further tests for this idea.
description: 9 pages plus appendixes, 4 figures
Twin extreme ultraviolet waves in the solar corona
Creators: name: Zheng, Ruisheng
name: Wang, Bing
name: Zhang, Liang
name: Chen, Yao
name: Erdelyi, Robertus
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Solar extreme ultraviolet (EUV) waves are spectacular propagating disturbances with EUV enhancements in annular shapes in the solar corona. These EUV waves carry critical information about the coronal magnetised plasma that can shed light on the elusive physical parameters (e.g. the magnetic field strength) by global solar coronal magneto-seismology. EUV waves are closely associated with a wide range of solar atmospheric eruptions, from violent flares and coronal mass ejections (CMEs) to less energetic plasma jets or mini-filament eruptions. However, the physical nature and driving mechanism of EUV waves is still controversial. Here, we report the unique discovery of twin EUV waves (TEWs) that were formed in a single eruption with observations from two different perspectives. In all earlier studies, a single eruption was associated at most with a single EUV wave. The newly found TEWs urge to re-visit our theoretical understanding about the underlying formation mechanism(s) of coronal EUV waves. Two distinct scenarios of TEWs were found. In the first scenario, the two waves were separately associated with a filament eruption and a precursor jet, while in another scenario the two waves were successively associated with a filament eruption. Hence, we label these distinguished scenarios as "fraternal TEWs" and "identical TEWs", respectively. Further, we also suggest that impulsive lateral expansions of two distinct groups of coronal loops are critical to the formation of TEWs in a single eruption.
Cometary science with CUBES
Creators: name: Opitom, Cyrielle
name: Snodgrass, Colin
name: La Forgia, Fiorangela
name: Evans, Chris
name: Cambianica, Pamela
name: Cremonese, Gabriele
name: Fitzsimmons, Alan
name: Lazzarin, Monica
name: Migliorini, Alessandra
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The proposed CUBES spectrograph for ESO's Very Large Telescope will be an exceptionally powerful instrument for the study of comets. The gas coma of a comet contains a large number of emission features in the near-UV range covered by CUBES (305-400 nm), which are diagnostic of the composition of the ices in its nucleus and the chemistry in the coma. Production rates and relative ratios between different species reveal how much ice is present and inform models of the conditions in the early solar system. In particular, CUBES will lead to advances in detection of water from very faint comets, revealing how much ice may be hidden in the main asteroid belt, and in measuring isotopic and molecular composition ratios in a much wider range of comets than currently possible, provide constraints on their formation temperatures. CUBES will also be sensitive to emissions from gaseous metals (e.g., FeI and NiI), which have recently been identified in comets and offer an entirely new area of investigation to understand these enigmatic objects.
description: Accepted for publication in Experimental Astronomy
Ultrasonic-assisted extraction of raspberry seed oil and evaluation of its physicochemical properties, fatty acid compositions and antioxidant activities
Creators: name: Chen, Lei
Publisher: name: figshare
Year: 2016
Subjects: subject: Molecular Biology
subject: 100101 Agricultural Biotechnology Diagnostics (incl. Biosensors)
subject: FOS: Agricultural biotechnology

description: Ultrasonic-assisted extraction was employed for highly efficient separation of aroma oil from raspberry seeds. A central composite design with two variables and five levels was employed and effects of process variables of sonication time and extraction temperature on oil recovery and quality were investigated. Optimal conditions predicted by response surface methodology were sonication time of 37 min and extraction temperature of 54°C. Specifically, ultrasonic-assisted extraction (UAE) was able to provide a higher content of beneficial unsaturated fatty acids, whereas conventional Soxhlet extraction (SE) resulted in a higher amount of saturated fatty acids. Moreover, raspberry seed oil contained abundant amounts of edible linoleic acid and linolenic acid, which suggest raspberry seeds could be valuable edible sources of natural γ-linolenic acid products. In comparison with SE, UAE exerted higher free radical scavenging capacities. In addition, UAE significantly blocked H2O2-induced intracellular reactive oxygen species (ROS) generation.
A new antifungal eudesmanolide glycoside isolated from Sphaeranthus indicus Linn. (Family Compositae)
Creators: name: Bhuwan B. Mishra
name: Navneet Kishore
name: Tiwari, Vinod K.
Publisher: name: Taylor & Francis
Year: 2016
Subjects: subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Microbiology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology

description: A new antifungal eudesmanolide glycoside 11,13-dihydro-3-O-(β-digitoxopyranose)-7α-hydroxy eudasman-6,12-olide (2) in addition to known compounds 1 and 3, has been isolated from Sphaeranthus indicus Linn. Its structure was determined by spectral analysis (UV, IR, 1D and 2D NMR and mass spectrum).
Galaxy And Mass Assembly (GAMA): Self-Organizing Map Application on Nearby Galaxies
Creators: name: Holwerda, B. W.
name: Smith, Dominic
name: Porter, Lori
name: Henry, Chris
name: Porter-Temple, Ren
name: Cook, Kyle
name: Pimbblet, Kevin A.
name: Hopkins, Andrew M.
name: Bilicki, Maciej
name: Turner, Sebastian
name: Acquaviva, Viviana
name: Wang, Lingyu
name: Wright, Angus H.
name: Kelvin, Lee S.
name: Grootes, Meiert W.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Galaxy populations show bimodality in a variety of properties: stellar mass, colour, specific star-formation rate, size, and Sérsic index. These parameters are our feature space. We use an existing sample of 7556 galaxies from the Galaxy and Mass Assembly (GAMA) survey, represented using five features and the K-means clustering technique, showed that the bimodalities are the manifestation of a more complex population structure, represented by between 2 and 6 clusters. Here we use Self Organizing Maps (SOM), an unsupervised learning technique which can be used to visualize similarity in a higher dimensional space using a 2D representation, to map these five-dimensional clusters in the feature space onto two-dimensional projections. To further analyze these clusters, using the SOM information, we agree with previous results that the sub-populations found in the feature space can be reasonably mapped onto three or five clusters. We explore where the "green valley" galaxies are mapped onto the SOM, indicating multiple interstitial populations within the green valley population. Finally, we use the projection of the SOM to verify whether morphological information provided by GalaxyZoo users, for example, if features are visible, can be mapped onto the SOM-generated map. Voting on whether galaxies are smooth, likely ellipticals, or "featured" can reasonably be separated but smaller morphological features (bar, spiral arms) can not. SOMs promise to be a useful tool to map and identify instructive sub-populations in multidimensional galaxy survey feature space, provided they are large enough.
description: 14 pages, 14 figures, accepted by MNRAS
Determination of trans-resveratrol in Solanum americanum Mill. by HPLC
Creators: name: Vagula, Julianna Matias
name: Janksyn Bertozzi
name: Castro, Juliana Cristina
name: Oliveira, Claudio Celestino De
name: Clemente, Edmar
name: Júnior, Oscar De Oliveira Santos
name: Jesuí Vergilio Visentainer
Publisher: name: Taylor & Francis
Year: 2016
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology

description: Solanum americanum Mill. is a plant that belongs to the Solanaceae family, its respective ripe fruit is dark purple. Ripe S. americanum Mill. fruits were submitted to physicochemical characterisation, and their trans-resveratrol contents were quantified by high-performance liquid chromatography. Such determination was executed with fruits at different stages of ripeness and freeze-stored fruits as well. In natura ripe fruit pulp and peel presented average trans-resveratrol amounts of 1.07 and 0.7960 μg per gram of sample, respectively. These amounts are significantly higher when compared to freeze-stored fruit (0.1353 μg of trans-resveratrol per gram of sample) and to other berries. All ripe fruits showed significant amounts of total anthocyanins and total antioxidants. Thus, for the first time, trans-resveratrol has been identified and quantified in S. americanum Mill. fruit samples.
Optical response of two-dimensional Dirac materials with a flat band
Creators: name: Han, Chen-Di
name: Lai, Ying-Cheng
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Two-dimensional Dirac materials with a flat band have been demonstrated to possess a plethora of unusual electronic properties, but the optical properties of these materials are less studied. Utilizing $α$-$\mathcal{T}_3$ lattice as a prototypical system, where $0\le α\le 1$ is a tunable parameter and a flat band through the conic intersection of two Dirac cones arises for $α> 0$, we investigate the conductivity of flat-band Dirac material systems analytically and numerically. Motivated by the fact that the imaginary part of the optical conductivity can have significant effects on the optical response and is an important factor of consideration for developing $α$-$\mathcal{T}_3$ lattice based optical devices, we are led to derive a complete conductivity formula with both the real and imaginary parts. Scrutinizing the formula, we uncover two phenomena. First, for the value of $α$ in some range, two types of optical transitions coexist: one between the two Dirac cones and another from the flat band to a cone, which generate multi-frequency transverse electrical propagating waves. Second, for $α=1$ so the quasiparticles become pseudospin-1, the flat-to-cone transition can result in resonant scattering. These results pave the way to exploiting $α$-$T_3$ lattice for optical device applications in the terahertz frequency domain.
description: 19 pages, 8 figures
Na$_5$Co$_{15.5}$Te$_6$O$_{36}$: an $S$ = 1/2 stacked Ising kagome antiferromagnet with a partially disordered ground state
Creators: name: Zhao, Z. Y.
name: Yue, X. Y.
name: Li, J. Y.
name: Li, N.
name: Che, H. L.
name: Sun, X. F.
name: He, Z. Z.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: $S$ = 1/2 Ising kagome antiferromagnets (KAFs) are rare in reality. In this work, we report the magnetic ground state and field-induced transitions of an $S$ = 1/2 Ising antiferromagnet with a stacked kagome geometry, Na$_5$Co$_{15.5}$Te$_6$O$_{36}$. Upon cooling, magnetic susceptibility measurement reveals three successive magnetic transitions at $T_1$ = 45.2 K, $T_2$ = 35.4 K, and $T_3 \sim$ 20 K. When the magnetic field is applied along the Ising $c$ axis, a strikingly anomalous initial magnetization lying outside the hysteresis loop is observed below $T_3$. Through the detailed characterizations, the magnetic field $vs$ temperature phase diagram is established. A partially disordered antiferromagnetic state is proposed below $T_1$, which becomes frozen below $T_3$. Na$_5$Co$_{15.5}$Te$_6$O$_{36}$ is therefore a promising candidate for $S$ = 1/2 Ising KAFs, and this unique composite structure may shed light on the exploratory path for $S$ = 1/2 Ising KAFs.
description: 9 pages, 9 pictures, to be published in PRB
Newly detected open clusters in the Galactic disk using Gaia EDR3
Creators: name: Hao, C. J.
name: Xu, Y.
name: Wu, Z. Y.
name: Lin, Z. H.
name: Liu, D. J.
name: Li, Y. J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The astrometric satellite Gaia recently released part of its third data set, which provides a good opportunity to hunt for more open clusters in the Milky Way. In this work, we conduct a blind search for open clusters in the Galactic disk using a sample-based clustering search method with high spatial resolution, which is especially suited to finding hidden targets. In addition to confirming 1930 previously known open clusters and 82 known globular clusters, 704 new stellar clusters are proposed as potential open clusters at Galactic latitudes of $|$b$|$ < 20 {deg}. For each of these new open clusters, we present the coordinates, detailed astrometric parameters, and ages, as well as the radial velocity, if available. Our blind search greatly increases the number of Galactic open clusters as objects of study and shows the incompleteness of the open cluster census across our Galaxy
description: 8 pages, 5 figures, published in Astronomy & Astrophysics
Polarized Raman Response of Two-Dimensional Quasiperiodic Antiferromagnets: Configuration-Interaction versus Green's Function Approaches
Creators: name: Inoue, Takashi
name: Yamamoto, Shoji
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study Raman response of Heisenberg antiferromagnets on the $\mathbf{C}_\mathrm{5v}$ Penrose and $\mathbf{C}_\mathrm{8v}$ Ammann-Beenker lattices within and beyond the Loudon-Fleury second-order perturbation scheme intending to explore optical features peculiar to quasiperiodic magnets. Within the Loudon-Fleury mechanism, we find one and only Raman-active mode of $\mathrm{E}_2$ symmetry without any dependence on linear incident and scattered polarizations. Beyond the Loudon-Fleury mechanism, two more symmetry species $\mathrm{A}_1$ and $\mathrm{A}_2$ are activated via dynamic ring exchange and chiral spin fluctuations, respectively, which can be extracted by the use of circular as well as linear polarizations. We employ Green's functions on one hand and configuration-interaction wavefunctions on the other hand to calculate the multimagnon contributions to inelastic light scatterings. Demonstrating the great advantage of the configuration-interaction scheme, we reveal that a major portion of the Shastry-Shraiman fourth-order Raman intensity is mediated by multimagnon fluctuations.
description: 5 pages, 3 figures supplemented with17 pages, 8 figures