bluuebunny/crossref_metadata_2025_split huggingface dataset:
Earth-Like: an education & outreach tool for exploring the diversity of planets like our own
Authors: Tasker Elizabeth J. , Ishimaru Kana , Guttenberg Nicholas , Foriel Julien 
Published: January 2020

AbstractEarth-Like is an interactive website and twitter bot that allows users to explore changes in the average global surface temperature of an Earth-like planet due to variations in the surface oceans and emerged land coverage, rate of volcanism (degassing) and the level of the received solar radiation. The temperature is calculated using a simple carbon–silicate cycle model to change the level of CO2 in the atmosphere based on the chosen parameters. The model can achieve a temperature range exceeding −100°C to 100°C by varying all three parameters, including freeze-thaw cycles for a planet with our present-day volcanism rate and emerged land fraction situated at the outer edge of the habitable zone. To increase engagement, the planet is visualized by using a neural network to render an animated globe, based on the calculated average surface temperature and chosen values for land fraction and volcanism. The website and bot can be found at earthlike.world and on twitter as @earthlikeworld. Initial feedback via a user survey suggested that Earth-Like is effective at demonstrating that minor changes in planetary properties can strongly impact the surface environment. The goal of the project is to increase understanding of the challenges we face in finding another habitable planet due to the likely diversity of conditions on rocky worlds within our Galaxy.
A NEW COARSELY RIGID CLASS OF BANACH SPACES
Authors: Baudier F. , Lancien G. , Motakis P. , Schlumprecht Th. 
Published: January 2020

AbstractWe prove that the class of reflexive asymptotic-$c_{0}$ Banach spaces is coarsely rigid, meaning that if a Banach space $X$ coarsely embeds into a reflexive asymptotic-$c_{0}$ space $Y$, then $X$ is also reflexive and asymptotic-$c_{0}$. In order to achieve this result, we provide a purely metric characterization of this class of Banach spaces. This metric characterization takes the form of a concentration inequality for Lipschitz maps on the Hamming graphs, which is rigid under coarse embeddings. Using an example of a quasi-reflexive asymptotic-$c_{0}$ space, we show that this concentration inequality is not equivalent to the non-equi-coarse embeddability of the Hamming graphs.
‘Una cosa es el indio y otra cosa es la antropología’: Racial and Aural (Dis)Encounters in Cumbia's Current Circulation
Authors: RUBIO RESTREPO JUAN DAVID 
Published: January 2020

AbstractThis article focuses on the collaboration between Colombian black accordionist Carmelo Torres, the most renown performer of accordion cumbia, and Bogotá-based band Los Toscos, a group of academically trained white-mestizo musicians. Considering Carmelo Torres y Los Toscos as representative of the current state of cumbia's global circulation and in dialogue with the growing corpus of scholarly works on the topic, this article traces how this collaboration has circulated on local, national, and transnational scales and theorizes the different discourses of music, race, and nation that emerge from it. Using recent critiques by thinkers of colour to the work of Deleuze and Guattari, I propose the idea of theracial assemblageand put it in dialogue with contributions to critical geography by Michel-Rolph Trouillot as well as current music scholarship from Latin America and the global north to build a interdisciplinary study that thinks embodied musickinginplace.
Observed versus modelled stellar CME rates
Authors: Leitzinger Martin , Odert Petra , Vida Krisztian , Kriskovics Levente , Guenther Eike W. , Korhonen Heidi , Greimel Robert , Hanslmeier Arnold , Lammer Helmut 
Published: January 2020

AbstractStellar coronal mass ejections (CMEs) may play an important role in stellar and planetary evolution, therefore the knowledge on parameter distributions of this energetic activity phenomenon is highly relevant. During the last years several attempts have been made to detect stellar CMEs of late-type main-sequence and pre main-sequence stars from dedicated optical spectroscopic observations. Up to now only a handful of distinct stellar CME detections are known which contradicts the results from stellar CME modelling, which predict higher CME rates. We report on dedicated ongoing and future observational attempts to detect stellar CMEs and discuss the observational results with respect to the results from stellar CME modelling.
Simple Hydrides (OH and CH) Trace the Dark Molecular Gas
Authors: Li Di , Tang Ningyu , Nguyen Hiep , Dawson J. R. , Heiles Carl , Wang Pei ,   the PRIMO collaboration
Published: January 2020

AbstractEmission lines from CO and Hi are the standard tracers of molecular and atomic interstellar medium, respectively. In the past two decades, a consensus has formed that a substantial fraction of Galactic molecular gas evades detection by these two tracers, thus giving rise to the empirical concept of dark molecular gas (DMG). Largely based on the experience and evidence garnered from the Arecibo Millennium survey, we have formed an international consortium, the Pacific Rim Interstellar Matter Observers (PRIMO), to pursue alternative tracers of DMG, particularly absorption against background radio sources (quasars). PRIMO have carried out observing programs at Arecibo, JVLA, Delingha 13.7m, ATCA and ALMA, among others. Our observations reveal abundant hydrides, namely OH and CH, in DMG clouds. The historical difficulty of mapping OH can be explained by the measured OH excitation temperature

$f(T_{{\rm{ex}}}^{{\rm{OH}}}) \propto \frac{1}{{\sqrt {2\pi } \sigma }}{\rm{exp}}[ - {(ln(T_{ex}^{OH}) - ln(3.4\;K))^2}/(2{\sigma ^2})],$
which is a modified log-normal function peaking close to the numerical value of the L-band Galactic continuum background (synchrotron + CMB). Both OH and CH are shown to be better tracers of molecular hydrogen than CO, particularly in the intermediate extinction regions (Av ~ 0.05-2 magnitude), where DMG dominates. http://ism.bao.ac.cn/primo
Retention of Small Charged Dust in Planet Forming Disks
Authors: Akimkin Vitaly 
Published: January 2020

AbstractDust evolution in disks around young stars is a key ingredient for the global disk evolution and accompanying planet formation. The mutual sticking of initially small grains is not straightforward and can be hampered by several processes. This includes dust grain bouncing, fragmentation, electrostatic repulsion and fast drift to the central star. In this study we aim at theoretical modeling of the dust coagulation coupled with the dust charging and disk ionization calculations. We show that the electrostatic barrier is a strong restraining factor to the coagulation of micron-size dust. While the sustained turbulence helps to overcome the electrostatic barrier, dust fluffiness limits this opportunity. Coulomb repulsion may keep a significant fraction of m dust in large regions of protoplanetary disks.
Large-scale magnetic field of the accretion disks of T Tauri stars
Authors: Dudorov Alexander E. , Khaibrakhmanov Sergey A. , Parfenov Sergey Yu. , Sobolev Andrey M. 
Published: January 2020

AbstractThe large-scale magnetic field in the accretion disks of young stars is investigated. Main features of our magnetohydrodynamical (MHD) model of the accretion disks and typical simulation results are presented. We discuss the role of MHD effects, ionization structure, magnetic field geometry and strength of the accretion disks.
Exoplanet host-star properties: the active environment of exoplanets
Authors: Pye John P. , Barrado David , García Rafael A. , Güdel Manuel , Nichols Jonathan , Joyce Simon , Huélamo Nuria , Morales-Calderón María , López Mauro , Solano Enrique , Lagage Pierre-Olivier , Johnstone Colin P. , Brun Allan Sacha , Strugarek Antoine , Ahuir Jérémy ,   On behalf of the ExoplANETS-A Consortium
Published: January 2020

AbstractThe primary objectives of the ExoplANETS-A project are to: establish new knowledge on exoplanet atmospheres; establish new insight on influence of the host star on the planet atmosphere; disseminate knowledge, using online, web-based platforms. The project, funded under the EU’s Horizon-2020 programme, started in January 2018 and has a duration ∼3 years. We present an overview of the project, the activities concerning the host stars and some early results on the host stars.
A mid-infrared interferometric survey of the planet-forming region around young Sun-like stars
Authors: Varga József , Ábrahám Péter , Chen Lei , Ratzka Thorsten , Gabányi K. É. , Kóspál Á. 
Published: January 2020

AbstractWe present our results from a mid-infrared interferometric survey targeted at the planet-forming region in the circumstellar disks around low- and intermediate-mass young stars. Our sample consists of 82 objects, including T Tauri stars, Herbig Ae stars, and young eruptive stars. Our main results are: 1) Disks around T Tauri stars are similar to those around Herbig Ae stars, but are relatively more extended once we account for stellar luminosity. 2) From the distribution of the sizes of the mid-infrared emitting region we find that inner dusty disk holes may be present in roughly half of the sample. 3) Our analysis of the silicate spectral feature reveals that the dust in the inner ~1 au region of disks is generally more processed than that in the outer regions. 4) The dust in the disks of T Tauri stars typically show weaker silicate emission in the N band spectrum, compared to Herbig Ae stars, which may indicate a general difference in the disk structure. Our data products are available at VizieR, and at the following web page: http://konkoly.hu/MIDI_atlas.
Probing the physical conditions surrounding young star clusters
Authors: Gregorio-Hetem Jane , Fernandes Beatriz , Navarete Felipe 
Published: January 2020

AbstractThe scenario of star cluster formation can be better understood based on the detailed study of the dynamical conditions of the associated gas, clustering properties and effects of ionizing sources, among others. Some of these characteristics are explored in our ongoing work based on observations with the SOAR and T80-S telescopes. With these data we have obtained a complete multi-band photometric catalogue of selected clusters that we characterize using color-color diagrams and flux ratios. In particular, this work is focused on SOAR/Spartan (near-infrared) observations of the Canis Major star-forming region.
MASSES: An SMA Large Project Surveying Protostars to Reveal How Stars Gain their Mass
Authors: Stephens Ian W. , Dunham Michael M. , Myers Philip C. , Pokhrel Riwaj , Bourke Tyler L. ,   the MASSES team
Published: January 2020

AbstractLow-mass stars form from the gravitational collapse of dense molecular cloud cores. While a general consensus picture of this collapse process has emerged, many details on how mass is transferred from cores to stars remain poorly understood. MASSES (Mass Assembly of Stellar Systems and their Evolution with the SMA), an SMA large project, has just finished surveying all 74 Class 0 and Class I protostars in the nearby Perseus molecular cloud to reveal the interplay between fragmentation, angular momentum, and outflows in regulating accretion and setting the final masses of stars. Scientific highlights are presented in this proceedings, covering the topics of episodic accretion, hierarchical thermal Jeans fragmentation, angular momentum transfer, envelope grain sizes, and disk evolution.
Observations of H2O and OH masers in star-forming regions
Authors: Rudnitskij Georgij , Ashimbaeva Nuriya , Bayandina Olga , Colom Pierre , Lekht Evgeny , Pashchenko Mikhail , Shakhvorostova Nadezhda , Tolmachev Alexander , Valtts Irina 
Published: January 2020

AbstractWe report long-term observations of H2O and OH maser emission sources at wavelengths of 1.35 and 18 cm associated with star-forming regions. Strong quasi-periodic flares of maser emission have been observed. Several sources (in particular, G25.65+1.05, IRAS 16293&minus;2422, Cep A) have displayed strong flares in the H2O line, when their peak flux density raised by a few orders of magnitude above the quiet state. Possible causes of this are discussed.
The biological impact of superflares on planets in the Habitable Zone
Authors: Valio Adriana , Estrela Raissa , Cabral Luisa , Grangeiro Abel 
Published: January 2020

AbstractYounger and fully convective stars are much more active than our Sun, producing many superflares. Here we estimate the impact of the superflares UV radiation on living organisms on the surface of orbiting planets in the habitable zone of the star. For this we study two active stars, Kepler-96 (solar type) and TRAPPIST-1 (M dwarf). Kepler-96, with an age of 2.4 Gyr, is at the same stage of the Sun when the first multicellular organisms appeared on Earth. The biological impact of super flares are studied on a hypothetical Earth at 1AU of Kepler-96 and on planets TRAPPIST-1e, f, and g for three atmospheres scenarios: an Archean and Present-day atmospheres with and without ozone. We estimated the survival rates of two bacteria and concluded that life would only survive on the surface of these planets if their atmosphere had an ozone layer, or in shallow waters of an ocean.
ALMA observations of sulfur-bearing molecules in protoplanetary disks
Authors: Nomura H. , Higuchi A. , Sakai N. , Yamamoto S. , Nagasawa M. , Tanaka K.K. , Miura H. , Nakamoto T. , Tanaka H. , Yamamoto T. , Walsh C. , Millar T.J. 
Published: January 2020

AbstractIt is thought that protoplanets formed in protoplanetary disks excite the orbital motion of the surrounding planetesimals, and the bow shocks caused by the highly excited planetesimals heat their icy component evaporating into gas. We have performed model calculations to study the evolution of molecular abundances of the evaporated icy component, which suggests sulfur-bearing molecules can be good tracers of icy planetesimal evaporation. Here we report the result of our ALMA observations of sulfur-bearing molecules towards protoplanetary disks. The lines were undetected but the obtained upper limits of the line fluxes and our model calculations give upper limits of the fractional abundances ofx(H2S) < 10−11andx(SO) < 10−10in the outer disk. These results are consistent with the molecular abundances in comets in our Solar system.
Formation of terrestrial planets
Authors: Kokubo Eiichiro 
Published: January 2020

AbstractIn the standard formation scenario of planetary systems, planets form from a protoplanetary disk that consists of gas and dust. The scenario can be divided into three stages: (1) formation of planetesimals from dust, (2) formation of protoplanets from planetesimals, and (3) formation of planets from protoplanets. In stage (1), planetesimals form from dust through coagulation of dust grains and/or some instability of a dust layer. Planetesimals grow by mutual collisions to protoplanets or planetary embryos through runaway and oligarchic growth in stage (2). The final stage (3) of terrestrial planet formation is giant impacts among protoplanets while sweeping residual planetesimals. In the present paper, we review the elementary processes of terrestrial planet formation and discuss the extension of the standard scenario.
Discovering periodic sublimation on main-belt primitive asteroids near perihelion and its possible astrobiological significance
Authors: Busarev Vladimir V. 
Published: January 2020

AbstractDiscovered periodic sublimation activity on four main-belt primitive asteroids led us to conclusions about possible origin of those and similar bodies (or their parent bodies) near or beyond the snow line in the early Solar System making incorporated in them a considerable water ice stock. Water differentiation of the bodies owing to 26A1 decay and their internal thermal evolution might have created conditions for water soluble organics and prebiotic compounds formation. Subsequent longtime periodic changing temperature and other physico-chemical parameters (due to spinning and moving around the Sun) in the near-surface layers of primitive asteroids have led probably to formation of more complex organic compounds of astrobiological significance.
Cosmic Pathways to Life: From Interstellar Molecules to the First Traces of Life
Authors: Güdel Manuel , Elmegreen Bruce G. , Tóth L. Viktor 
Published: January 2020

AbstractThe present-day Earth with its innumerable life forms is a product of cosmic evolution starting with the formation of our galaxy and the dense gas clouds within it, and proceeding through the contraction of one of those clouds about 4.6 Gyr ago, first into filaments and then one or more protostellar disks, planets, and central stars, one of which was our Sun. Radioactive debris from a massive nearby star was included. The planets themselves formed through coagulation, accretion, and fragmentation of solid bodies. Habitability depends on a delicate balance between disk accretion by gravity and dispersal by the central star, which determine the size of the planet and its gaseous envelope, combined with a long period of stellar radiation, which has to disperse this envelope but leave a hospitable secondary atmosphere. The final step toward life involves even more complexity as self-replicating bio-molecules form with ever increasing stability.
Four agendas for research and policy on emissions mitigation and well-being
Authors: Roberts J. Timmons , Steinberger Julia K. , Dietz Thomas , Lamb William F. , York Richard , Jorgenson Andrew K. , Givens Jennifer E. , Baer Paul , Schor Juliet B. 
Published: January 2020

Non-technical abstract
The climate crisis requires nations to achieve human well-being with low national levels of carbon emissions. Countries vary from one another dramatically in how effectively they convert resources into well-being, and some nations with low levels of emissions have relatively high objective and subjective well-being. We identify urgent research and policy agendas for four groups of countries with either low or high emissions and well-being indicators. Least studied are those with low well-being and high emissions. Understanding social and political barriers to switching from high-carbon to lower-carbon modes of production and consumption, and ways to overcome them, will be fundamental.
Diabolical points in coupled active cavities with quantum emitters
Authors: Yang Jingnan , Qian Chenjiang , Xie Xin , Peng Kai , Wu Shiyao , Song Feilong , Sun Sibai , Dang Jianchen , Yu Yang , Shi Shushu , He Jiongji , Steer Matthew J. , Thayne Iain G. , Li Bei-Bei , Bo Fang , Xiao Yun-Feng , Zuo Zhanchun , Jin Kuijuan , Gu Changzhi , Xu Xiulai 
Published: January 2020

AbstractIn single microdisks, embedded active emitters intrinsically affect the cavity modes of the microdisks, resulting in trivial symmetric backscattering and low controllability. Here we demonstrate macroscopic control of the backscattering direction by optimizing the cavity size. The signature of the positive and negative backscattering directions in each single microdisk is confirmed with two strongly coupled microdisks. Furthermore, diabolical points are achieved at the resonance of the two microdisks, which agrees well with theoretical calculations considering the backscattering directions. Diabolical points in active optical structures pave the way for an implementation of quantum information processing with geometric phase in quantum photonic networks.
High level MYC amplification in B-cell lymphomas: is it a marker of aggressive disease?
Authors: Pophali Priyanka A. , Marinelli Lisa M. , Ketterling Rhett P. , Meyer Reid G. , McPhail Ellen D. , Kurtin Paul J. , Mwangi Raphael , Maurer Matthew J. , Habermann Thomas , King Rebecca L. 
Published: January 2020

AbstractWhile MYC translocations in B-cell lymphoma (BCL) have been extensively studied, the significance of MYC amplification (MYC amp) is poorly understood. This study characterizes BCL showing MYC amp, defined as uncountable FISH signals. Retrospective analysis of all BCL FISH for MYC aberrations performed at our institution (1/2010–2/2018) identified 44/9715 (0.45%) cases with MYC amp. MYC amp probe signals appeared in a cloud-like distribution (70%) or in a single homogenous-staining-region (30%). In total 59% also had MYC separation by breakapart probe indicating concurrent MYC translocation. The most common morphology was large cell (82%) and diagnosis was diffuse large BCL (DLBCL, 50%). In total 88% were germinal center B-cell-like by Hans algorithm. In total 12/42 (29%) cases were “double-hit” by WHO criteria (DHL/THL) in addition to having MYC amp. The estimated 2-year overall survival (OS) of DLBCL cases with MYC amp was 80%. There was no significant difference in OS between DLBCL and DHL/THL among cases with MYC amp, suggesting a poor prognostic impact of MYC amp. However, when compared to a larger cohort of DLBCL and DHL/THL, MYC amp did not have prognostic significance. In summary, MYC amp in BCL is rare, most commonly occurs in DLBCL, and was not associated with survival in our cohort.
RNA-Seq profiling of deregulated miRs in CLL and their impact on clinical outcome
Authors: Kaur Gurvinder , Ruhela Vivek , Rani Lata , Gupta Anubha , Sriram Krishnamachari , Gogia Ajay , Sharma Atul , Kumar Lalit , Gupta Ritu 
Published: January 2020

AbstractAbnormal expression patterns of regulatory small non-coding RNA (sncRNA) molecules such as microRNAs (miRs), piwi-interacting RNAs (piRNAs), and small nucleolar RNAs (snoRNAs) play an important role in the development and progression of cancer. Identification of clinically relevant sncRNA signatures could, therefore, be of tremendous translational value. In the present study, genome-wide small RNA sequencing identified a unique pattern of differential regulation of eight miRs in Chronic Lymphocytic Leukemia (CLL). Among these, three were up-regulated (miR-1295a, miR-155, miR-4524a) and five were down-regulated (miR-30a, miR-423, miR-486*, let-7e, and miR-744) in CLL. Altered expression of all these eight differentially expressed miRs (DEMs) was validated by RQ-PCR. Besides, seven novel sequences identified to have elevated expression levels in CLL turned out to be transfer RNA (tRNA)/piRNAs (piRNA-30799, piRNA-36225)/snoRNA (SNORD43) related. Multivariate analysis showed that miR-4524a (HR: 1.916, 95% CI: 1.080–3.4, p value: 0.026) and miR-744 (HR: 0.415, 95% CI: 0.224–0.769, p value: 0.005) were significantly associated with risk and time to first treatment. Further investigations could help establish the scope of integration of these DEM markers into risk stratification designs and prognostication approaches for CLL.