bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Note on Real Operator Monotone Functions
Authors: Gaál Marcell , Pálfia Miklós 
Published: June 2020

Abstract
In this paper, we initiate the study of real operator monotonicity for functions of tuples of operators, which are multivariate structured maps with a functional calculus called free functions that preserve the order between real parts (or Hermitian parts) of bounded linear Hilbert space operators. We completely characterize such functions on open convex free domains in terms of ordinary operator monotone free functions on self-adjoint domains. Further assuming the more stringent free holomorphicity, we prove that all such functions are affine linear with completely positive nonconstant part. This problem has been proposed by David Blecher at the biannual OTOA conference held in Bangalore in December 2016.
Stereotyped B-cell response that counteracts antigenic variation of influenza viruses
Authors: Tonouchi Keisuke , Adachi Yu , Moriyama Saya , Sano Kaori , Tabata Koshiro , Ide Keigo , Takeyama Haruko , Suzuki Tadaki , Takahashi Yoshimasa 
Published: June 2020

Abstract
Influenza A subtypes are categorized into group 1 and group 2 based on the hemagglutinin (HA) sequence. Owing to the phylogenetic distance of HAs in different groups, antibodies that bind multiple HA subtypes across different groups are extremely rare. In this study, we demonstrated that an immunization with acid-treated HA antigen elicits germinal center (GC) B cells that bind multiple HA subtypes in both group 1 and group 2. The cross-group GC B cells utilized mostly one VH gene (1S56) and exhibited a sign of clonal evolution within GCs. The 1S56-lineage IgGs derived from GC B cells were able to bind to HA protein on the infected cell surface but not to the native form of HA protein, suggesting the cryptic nature of the 1S56 epitope and its exposure in infected cells. Finally, the 1S56-lineage IgGs provided protection against lethal infection in an Fc-dependent manner, independent of the virus-neutralizing activity. Thus, we identified 1S56-lineage antibodies as a unique stereotype for achieving cross-group influenza specificity. The antigens exposing the 1S56 epitope may be good candidates for broadly protective immunogens.
Birth weight affects body protein retention but not nitrogen efficiency in the later life of pigs
Authors: van der Peet-Schwering Carola M C , Verschuren Lisanne M G , Hedemann Mette S , Binnendijk Gisabeth P , Jansman Alfons J M 
Published: June 2020

Abstract
Exploring factors that might affect nitrogen (N) efficiency in pigs could support the development of precision feeding concepts. Therefore, an experiment was conducted to determine the effects of birth weight (BiW) on N retention, N efficiency, and concentrations of metabolites in plasma and urine related to N efficiency in male pigs of 14 wk of age. BiW of the low BiW (LBW) and high BiW (HBW) pigs was 1.11 ± 0.14 and 1.79 ± 0.12 kg, respectively. Twenty LBW and 20 HBW pigs were individually housed in metabolism cages and were subjected to an N balance study in two sequential periods of 5 d, after an 11-d adaptation period. Pigs were assigned to a protein adequate (A) or protein restricted (R, 70% of A) regime in a change-over design and fed restrictedly 2.8 times the energy requirements for maintenance. Nontargeted metabolomics analyses were performed in urine and blood plasma samples. The N retention in g/d was higher in the HBW than in the LBW pigs (P &lt; 0.001). The N retention in g/(kg BW0.75·d) and N efficiency (= 100% × N retention / N intake), however, were not affected by BiW of the pigs. Moreover, fecal digestibility of N and urinary concentration of N and urea were not affected by BiW of the pigs. The concentration of insulin (P = 0.08) and insulin-like growth factor-1 (IGF-1;P = 0.05) in blood plasma was higher in HBW pigs, whereas the concentration of α-amino N tended to be lower in HBW pigs (P = 0.06). The LBW and HBW pigs could not be discriminated based on the plasma and urinary metabolites retrieved by nontargeted metabolomics. Restricting dietary protein supply decreased N retention (P &lt; 0.001), N efficiency (P = 0.07), fecal N digestibility (P &lt; 0.001), urinary concentration of N and urea (P &lt; 0.001), and concentration of urea (P &lt; 0.001), IGF-1 (P &lt; 0.001), and α-amino N (P &lt; 0.001) in blood plasma. The plasma and urinary metabolites differing between dietary protein regime were mostly amino acids (AA) or their derivatives, metabolites of the tricarboxylic acid cycle, and glucuronidated compounds, almost all being higher in the pigs fed the A regime. This study shows that BiW affects absolute N retention but does not affect N efficiency in growing pigs. Therefore, in precision feeding concepts, BiW of pigs should be considered as a factor determining protein deposition capacity but less as a trait determining N efficiency.
Scientific Impact and Clinical Influence: Identifying Landmark Studies in Burns
Authors: Ring Justine , Castanov Valera , McLaren Christie , Hajjar Alexander E J , Jeschke Marc G 
Published: June 2020

AbstractAlthough many reviews describe significant advances in burn care, no studies have yet examined why these papers had such profound impact. Our objective was to identify the most highly cited, as well as the most clinically influential studies in burns, and describe their characteristics, to inform future research in the field. Web of Science was searched using keywords related to burns to identify the 100 most-cited burns papers. Study design, year and journal of publication, and subject of the paper were recorded. A mixed-methods approach was used to identify papers in burn research leading to change in clinical practice. Characteristics of these papers were compared with identify any factors predictive of future citations or clinical influence. The 100 highly cited papers were cited between 159 and 907 times. There was no correlation between total citations and journal impact factor, year of publication, or subject area. Level of evidence did not predict future citations or influence, but may be influenced by evolving research standards. Of 23 clinically influential studies, 6 were not among 100 most-cited. Using papers only from the 100 most-cited list was not sufficient to identify leading researchers in burns. Citation analysis is a beneficial, however not alone sufficient to identify landmark papers, particularly for multidisciplinary fields such as burns.
The Psychic Chaitanya: Global Occult and Vaishnavism in Fin de Siècle Bengal
Authors: Bhatia Varuni 
Published: June 2020

AbstractThis article explores the intersections between Spiritualism, Mesmerism, and Bengali Vaishnavism in fin de siècle Bengal through the experiments in spirit communication conducted by the Ghosh family of Amrita Bazar Patrika Press fame. As a result of these engagements, the Amrita Bazar Patrika group proposed a novel understanding of Krishna Chaitanya/Gauranga (1486–1533) as a psychic who was able to channelize God through his unique powers of mediumship. It contributes to a nascent but growing body of scholarship around the relationship between religious modernity in colonial India and transnational occult networks. The article is written in three parts: part one discusses transnational occult networks crisscrossing Calcutta in the mid-to-late nineteenth century, with a focus on Theosophy and Spiritualism. It explores the initial goodwill between Madame Blavatsky and Sishir Kumar Ghosh, which dissipated later. The second part focuses on the Ghosh family séance, with the aim of parsing out how traditional and popular Bengali ‘ghosts’ were incorporated into a spectrum of occult knowledge about ‘higher’ spirits. This section also brings to light the caste and gender relationships exposed during séances held in the Ghosh family circle. Part three singles out the image of the ‘psychic Chaitanya’ from the pages of the Hindu Spiritual Magazine to bring into focus interactions between Yoga and occult in the context of the development of modern Bengali Vaishnavism.
Generating synthetic cosmological data with GalSampler
Authors: Hearin Andrew , Korytov Danila , Kovacs Eve , Benson Andrew , Aung Han , Bradshaw Christopher , Campbell Duncan ,   (The LSST Dark Energy Science Collaboration)
Published: June 2020

ABSTRACT
As part of the effort to meet the needs of the Large Synoptic Survey Telescope Dark Energy Science Collaboration (LSST DESC) for accurate, realistically complex mock galaxy catalogues, we have developed galsampler, an open-source python package that assists in generating large volumes of synthetic cosmological data. The key idea behind galsampler is to recast hydrodynamical simulations and semi-analytic models as physically motivated galaxy libraries. galsampler populates a new, larger volume halo catalogue with galaxies drawn from the baseline library; by using weighted sampling guided by empirical modelling techniques, galsampler inherits statistical accuracy from the empirical model and physically motivated complexity from the baseline library. We have recently used galsampler to produce the cosmoDC2 extragalactic catalogue made for the LSST DESC Data Challenge 2. Using cosmoDC2 as a guiding example, we outline how galsampler can continue to support ongoing and near-future galaxy surveys such as the Dark Energy Survey, the Dark Energy Spectroscopic Instrument, WFIRST, and Euclid.
JINGLE – IV. Dust, H i gas, and metal scaling laws in the local Universe
Authors: De Looze I , Lamperti I , Saintonge A , Relaño M , Smith M W L , Clark C J R , Wilson C D , Decleir M , Jones A P , Kennicutt R C , Accurso G , Brinks E , Bureau M , Cigan P , Clements D L , De Vis P , Fanciullo L , Gao Y , Gear W K , Ho L C , Hwang H S , Michałowski M J , Lee J C , Li C , Lin L , Liu T , Lomaeva M , Pan H-A , Sargent M , Williams T , Xiao T , Zhu M 
Published: June 2020

ABSTRACT
Scaling laws of dust, H i gas, and metal mass with stellar mass, specific star formation rate, and metallicity are crucial to our understanding of the build-up of galaxies through their enrichment with metals and dust. In this work, we analyse how the dust and metal content varies with specific gas mass (MH i/M⋆) across a diverse sample of 423 nearby galaxies. The observed trends are interpreted with a set of Dust and Element evolUtion modelS (DEUS) – including stellar dust production, grain growth, and dust destruction – within a Bayesian framework to enable a rigorous search of the multidimensional parameter space. We find that these scaling laws for galaxies with −1.0 ≲ log MH i/M⋆ ≲ 0 can be reproduced using closed-box models with high fractions (37–89 ${{\ \rm per\ cent}}$) of supernova dust surviving a reverse shock, relatively low grain growth efficiencies (ϵ = 30–40), and long dust lifetimes (1–2 Gyr). The models have present-day dust masses with similar contributions from stellar sources (50–80 ${{\ \rm per\ cent}}$) and grain growth (20–50 ${{\ \rm per\ cent}}$). Over the entire lifetime of these galaxies, the contribution from stardust (&gt;90 ${{\ \rm per\ cent}}$) outweighs the fraction of dust grown in the interstellar medium (&lt;10 ${{\ \rm per\ cent}}$). Our results provide an alternative for the chemical evolution models that require extremely low supernova dust production efficiencies and short grain growth time-scales to reproduce local scaling laws, and could help solving the conundrum on whether or not grains can grow efficiently in the interstellar medium.
An [O iii] search for extended emission around AGN with H i mapping: a distant cloud ionized by Mkn 1
Authors: Knese Erin Darnell , Keel William C , Knese Greg , Bennert Vardha N , Moiseev Alexei , Grokhovskaya Aleksandra , Dodonov Sergei N 
Published: June 2020

ABSTRACT
Motivated by the discovery of large ionized clouds around AGN, and particularly the large fraction of those that are consistent with photoionized gaseous tidal debris, we searched for [O iii] emission around Seyfert galaxies previously mapped in H i, many with extended gas features. Of 26 Seyfert galaxies, we find one spatially extended emission feature, a discrete cloud projected ≈12 kpc SW from the centre of Mkn 1 and spanning a transverse extent of 8 kpc. Optical spectroscopy (Kast/Lick and SCORPIO/BTA) of this cloud confirms its association with the Mkn 1–NGC 451 galaxy pair, closely matching the kinematics of nearby H i structures, and reveals emission-line ratios requiring photoionization by the AGN at roughly the direct observed luminosity of the nucleus. For the entire sample, the full opening angle of the ionization cones (bicones) must be &lt;20° if the AGNs are continuously bright for scales longer than the light-traveltimes to the H i structures. Since typical AGN ionization cones are observed to be much broader than this, our low detection fraction may add to evidence for the ubiquity of strong variations in AGN luminosity on scales 104–105 yr.
The SDSS/APOGEE catalogue of HgMn stars
Authors: Chojnowski S Drew , Hubrig Swetlana , Hasselquist Sten , Beaton Rachael L , Majewski Steven R , García-Hernández D A , DeColibus David 
Published: June 2020

ABSTRACT
We report on H-band spectra of chemically peculiar Mercury–Manganese (HgMn) stars obtained via the SDSS/APOGEE survey. As opposed to other varieties of chemically peculiar stars such as classical Ap/Bp stars, HgMn stars lack strong magnetic fields and are defined by extreme overabundances of Mn, Hg, and other heavy elements. A satisfactory explanation for the abundance patterns remains to be determined, but low rotational velocity is a requirement and involvement in binary/multiple systems may be as well. The APOGEE HgMn sample currently consists of 269 stars that were identified among the telluric standard stars as those whose metallic absorption content is limited to or dominated by the H-band Mn ii lines. Due to the fainter magnitudes probed by the APOGEE survey as compared to past studies, only 9/269 stars in the sample were previously known as HgMn types. The 260 newly identified HgMn stars represents a more than doubling of the known sample. At least 32 per cent of the APOGEE sample are found to be binary or multiple systems, and from multi-epoch spectroscopy, we were able to determine orbital solutions for at least one component in 32 binaries. Many of the multilined systems include chemically peculiar companions, with noteworthy examples being the HgMn+Ap/Bp binary HD 5429, the HgMn+HgMn binary HD 298641, and the HgMn+Bp Mn + Am triple system HD 231263. As a further peculiarity, roughly half of the sample produces narrow emission in the C i 16895 Å line, with widths and radial velocities that match those of the Mn ii lines.
Emulating the global 21-cm signal from Cosmic Dawn and Reionization
Authors: Cohen Aviad , Fialkov Anastasia , Barkana Rennan , Monsalve Raul A 
Published: June 2020

ABSTRACT
The 21-cm signal of neutral hydrogen is a sensitive probe of the Epoch of Reionization (EoR), Cosmic Dawn, and the Dark Ages. Currently, operating radio telescopes have ushered in a data-driven era of 21-cm cosmology, providing the first constraints on the astrophysical properties of sources that drive this signal. However, extracting astrophysical information from the data is highly non-trivial and requires the rapid generation of theoretical templates over a wide range of astrophysical parameters. To this end emulators are often employed, with previous efforts focused on predicting the power spectrum. In this work, we introduce 21cmgem– the first emulator of the global 21-cm signal from Cosmic Dawn and the EoR. The smoothness of the output signal is guaranteed by design. We train neural networks to predict the cosmological signal using a database of ∼30 000 simulated signals which were created by varying seven astrophysical parameters: the star formation efficiency and the minimal mass of star-forming haloes; the efficiency of the first X-ray sources and their spectrum parametrized by spectral index and the low-energy cut-off; the mean-free path of ionizing photons, and the cosmic microwave background optical depth. We test the performance with a set of ∼2000 simulated signals, showing that the relative error in the prediction has an rms of 0.0159. The algorithm is efficient, with a running time per parameter set of 0.16 s. Finally, we use the database of models to check the robustness of relations between the features of the global signal and the astrophysical parameters that we previously reported.
Timing the earliest quenching events with a robust sample of massive quiescent galaxies at 2 &lt; z &lt; 5
Authors: Carnall A C , Walker S , McLure R J , Dunlop J S , McLeod D J , Cullen F , Wild V , Amorin R , Bolzonella M , Castellano M , Cimatti A , Cucciati O , Fontana A , Gargiulo A , Garilli B , Jarvis M J , Pentericci L , Pozzetti L , Zamorani G , Calabro A , Hathi N P , Koekemoer A M 
Published: June 2020

ABSTRACTWe present a sample of 151 massive (M* &gt; 1010 M⊙) quiescent galaxies at 2 &lt; z &lt; 5, based on a sophisticated Bayesian spectral energy distribution fitting analysis of the CANDELS UDS and GOODS-South fields. Our sample includes a robust sub-sample of 61 objects for which we confidently exclude low-redshift and star-forming solutions. We identify 10 robust objects at z &gt; 3, of which 2 are at z &gt; 4. We report formation redshifts, demonstrating that the oldest objects formed at z &gt; 6; however, individual ages from our photometric data have significant uncertainties, typically ∼0.5 Gyr. We demonstrate that the UVJ colours of the quiescent population evolve with redshift at z &gt; 3, becoming bluer and more similar to post-starburst galaxies at lower redshift. Based upon this, we construct a model for the time evolution of quiescent galaxy UVJ colours, concluding that the oldest objects are consistent with forming the bulk of their stellar mass at z ∼ 6–7 and quenching at z ∼ 5. We report spectroscopic redshifts for two of our objects at z = 3.440 and 3.396, which exhibit extremely weak Ly α emission in ultra-deep VANDELS spectra. We calculate star formation rates based on these line fluxes, finding that these galaxies are consistent with our quiescent selection criteria, provided their Ly α escape fractions are &gt;3 and &gt;10 per cent, respectively. We finally report that our highest redshift robust object exhibits a continuum break at λ ∼ 7000 Å in a spectrum from VUDS, consistent with our photometric redshift of $z_\mathrm{phot}=4.72^{+0.06}_{-0.04}$. If confirmed as quiescent, this object would be the highest redshift known quiescent galaxy. To obtain stronger constraints on the times of the earliest quenching events, high-SNR spectroscopy must be extended to z ≳ 3 quiescent objects.
Planetary nebulae with Wolf–Rayet-type central stars – I. The case of the high-excitation NGC 2371
Authors: Gómez-González V M A , Toalá J A , Guerrero M A , Todt H , Sabin L , Ramos-Larios G , Mayya Y D 
Published: June 2020

ABSTRACT
We present the analysis of the planetary nebula (PN) NGC 2371 around the [Wolf–Rayet] (WR) star WD 0722+295. Our Isaac Newton Telescope intermediate dispersion spectrograph spectra, in conjunction with archival optical and ultraviolet images, unveil in unprecedented detail the high ionization of NGC 2371. The nebula has an apparent multipolar morphology, with two pairs of lobes protruding from a barrel-like central cavity, a pair of dense low ionization knots misaligned with the symmetry axis embedded within the central cavity, and a high-excitation halo mainly detected in He ii. The abundances from the barrel-like central cavity and dense knots agree with abundance determinations for other PNe with [WR]-type central stars of PNe. We suggest that the densest knots inside NGC 2371 are the oldest structures, remnant of a dense equatorial structure, while the main nebular shell and outer lobes resulted from a latter ejection that ended the stellar evolution. The analysis of position–velocity diagrams produced from our high-quality spectra suggests that NGC 2371 has a bipolar shape with each lobe presenting a double structure protruding from a barrel-like central region. The analysis of the spectra of WD 0722+295 results in similar stellar parameters as previously reported. We corroborate that the spectral subtype corresponds with a [WO1] type.
Khoe-San Genomes Reveal Unique Variation and Confirm the Deepest Population Divergence in Homo sapiens
Authors: Schlebusch Carina M , Sjödin Per , Breton Gwenna , Günther Torsten , Naidoo Thijessen , Hollfelder Nina , Sjöstrand Agnes E , Xu Jingzi , Gattepaille Lucie M , Vicente Mário , Scofield Douglas G , Malmström Helena , de Jongh Michael , Lombard Marlize , Soodyall Himla , Jakobsson Mattias 
Published: June 2020

Abstract
The southern African indigenous Khoe-San populations harbor the most divergent lineages of all living peoples. Exploring their genomes is key to understanding deep human history. We sequenced 25 full genomes from five Khoe-San populations, revealing many novel variants, that 25% of variants are unique to the Khoe-San, and that the Khoe-San group harbors the greatest level of diversity across the globe. In line with previous studies, we found several gene regions with extreme values in genome-wide scans for selection, potentially caused by natural selection in the lineage leading to Homo sapiens and more recent in time. These gene regions included immunity-, sperm-, brain-, diet-, and muscle-related genes. When accounting for recent admixture, all Khoe-San groups display genetic diversity approaching the levels in other African groups and a reduction in effective population size starting around 100,000 years ago. Hence, all human groups show a reduction in effective population size commencing around the time of the Out-of-Africa migrations, which coincides with changes in the paleoclimate records, changes that potentially impacted all humans at the time.
ALMA twenty-six arcmin2 survey of GOODS-S at one millimeter (ASAGAO): Millimeter properties of stellar mass selected galaxies
Authors: Yamaguchi Yuki , Kohno Kotaro , Hatsukade Bunyo , Wang Tao , Yoshimura Yuki , Ao Yiping , Dunlop James S , Egami Eiichi , Espada Daniel , Fujimoto Seiji , Hayatsu Natsuki H , Ivison Rob J , Kodama Tadayuki , Kusakabe Haruka , Nagao Tohru , Ouchi Masami , Rujopakarn Wiphu , Tadaki Ken-ichi , Tamura Yoichi , Ueda Yoshihiro , Umehata Hideki , Wang Wei-Hao 
Published: June 2020

Abstract
We make use of the ALMA twenty-Six Arcmin2 survey of GOODS-S At One-millimeter (ASAGAO), deep 1.2 mm continuum observations of a 26-arcmin2 region in the Great Observatories Origins Deep Survey-South (GOODS-S) obtained with Atacama Large Millimeter/sub-millimeter Array (ALMA), to probe dust-enshrouded star formation in K-band selected (i.e., stellar mass selected) galaxies, which are drawn from the FourStar Galaxy Evolution Survey (ZFOURGE) catalog. Based on the ASAGAO combined map, which was created by combining ASAGAO and ALMA archival data in the GOODS-South field, we find that 24 ZFOURGE sources have 1.2 mm counterparts with a signal-to-noise ratio &gt;4.5 (1σ ≃ 30–70 μJy beam−1 at 1.2 mm). Their median redshift is estimated to be $z$median = 2.38 ± 0.14. They generally follow the tight relationship of the stellar mass versus star formation rate (i.e., the main sequence of star-forming galaxies). ALMA-detected ZFOURGE sources exhibit systematically larger infrared (IR) excess (IRX ≡ LIR/LUV) compared to ZFOURGE galaxies without ALMA detections even though they have similar redshifts, stellar masses, and star formation rates. This implies the consensus stellar-mass versus IRX relation, which is known to be tight among rest-frame-ultraviolet-selected galaxies, cannot fully predict the ALMA detectability of stellar-mass-selected galaxies. We find that ALMA-detected ZFOURGE sources are the main contributors to the cosmic IR star formation rate density at $z$ = 2–3.