bluuebunny/crossref_metadata_2025_split huggingface dataset:
Diversification of the cranium and mandible of spiny rats of the genus Trinomys (Rodentia: Echimyidae) in an environmental and phylogenetic context
Authors: Iaeger Chaiane Teila , Maestri Renan , Fornel Rodrigo 
Published: December 2020

Abstract
Evolutionary constraints and ecological pressures influence species’ morphological diversity. The aim of this study was to explore patterns of morphological variation, to investigate the influence of environmental variables on morphological differentiation, and assess the strength of phylogenetic signal for the cranium and mandible in spiny rats of the genus Trinomys. We examined 377 crania and mandibles of all species of the genus Trinomys. We used geometric morphometric methods based on two-dimensional anatomical landmarks to describe cranium and mandible shape and size. Phylogenetic signal was tested using the K statistics and associations between morphology and environmental variables were made using a phylogenetic partial least squares analysis. We found marked differences in size and shape in the synchranium among species, especially in the segregation of T. albispinus and T. yonenagae from the other species, which in turn greatly overlapped both in size and shape spaces. We found a weak phylogenetic signal for size of the synchranium and intermediate phylogenetic signals for shape, a pattern similar to other studies. Differentiation of the synchranium shape in Trinomys was associated largely with precipitation-related variables, while the association between size and environmental variables was weak. Notably, Trinomys species inhabiting xeric environments had relatively larger tympanic bullae.
Surviving Seemingly Endless Refugeeship—Social Representations and Strategies of Palestinian Refugees in Ein El Hilweh
Authors: Nilsson Marco , Badran Dany 
Published: December 2020

AbstractToday, about 470,000 Palestinian refugees are registered with the United Nations Relief and Works Agency for Palestine Refugees in the Near East in Lebanon, with 45 per cent of them living in the 12 official Palestinian refugee camps. Previous research identified several socio-economic problems facing the Palestinian refugees in Lebanon. The refugee camps have generally been very poor and relatively dangerous places to live. Moreover, all the Palestinian camps suffer from overcrowding, unemployment, poor housing conditions, inadequate infrastructure, as well as a lack of access to justice. Although previous research has identified several difficulties with living in a Palestinian refugee camp, this study takes a fresh look at life in the largest camp in Lebanon—Ein El Hilweh. In addition to identifying such problems and difficulties, it also explores the various strategies adopted by Palestinian refugees to handle them. While acknowledging that not all problems can be resolved, these problem-solving strategies of refugees is a significant gap in the literature on refugees that warrants further investigation. The study is grounded in Serge Moscovici’s theory of social representations, analyzing Palestinian refugees’ shared experiences in facing difficult situations as well as their strategies for solving them.
Filamentous growth is a general feature of Candida auris clinical isolates
Authors: Fan Shuru , Yue Huizhen , Zheng Qiushi , Bing Jian , Tian Sufei , Chen Jingjing , Ennis Craig L , Nobile Clarissa J , Huang Guanghua , Du Han 
Published: December 2020

Abstract

A striking feature of pathogenic Candida species is morphological plasticity that facilitates environmental adaptation and host infection. Candida auris is an emerging multidrug-resistant fungal pathogen first described in Japan in 2009. In this study, we demonstrate that clinical isolates of C. auris have multiple colony and cellular morphologies including the yeast, filamentous, aggregated, and elongated forms. This phenotypic diversity has been observed in eight clinical isolates of C. auris representing four major genetic clades, suggesting that it could be a general characteristic. We further demonstrate that different cell types of C. auris exhibit distinct antifungal resistance and virulence properties in a Galleria mellonella infection model. Our findings imply that morphological diversity is an important biological feature of C. auris and could be a contributor to its emergence and rapid prevalence worldwide.

Lay Summary
Candida auris is an emerging multidrug-resistant fungal pathogen. Morphological analyses indicate that filamentation is a general feature of clinical isolates of C. auris. This ability is associated with antifungal resistance and virulence.
Exploring the origin and evolution of the Kepler 36 system
Authors: Rimlinger Thomas , Hamilton Douglas 
Published: December 2020

ABSTRACT
We examine the origins of the Kepler 36 planetary system, which features two very different planets: Kepler 36b ($\rm \rho = 7.46$ $\rm g$ $\rm cm^{-3}$) and Kepler 36c ($\rm \rho = 0.89$ $\rm g$ $\rm cm^{-3}$). The planets lie extremely close to one another, separated by just 0.01 au, and they orbit just a tenth of an au from the host star. In our origin scenario, Kepler 36b starts with far less mass than Kepler 36c, a gaseous giant planet that forms outside the ice line and quickly migrates inwards, capturing its neighbour into its 2:1 mean-motion resonance while continuing to move inwards through a swarm of planetesimals and protoplanets. Subsequent collisions with these smaller bodies knock Kepler 36b out of resonance and raise its mass and density (via self-compression). We find that our scenario can yield planets whose period ratio matches that of Kepler 36b and c, although these successes are rare, occurring in just 1.2 per cent of cases. However, since systems like Kepler 36 are themselves rare, this is not necessarily a drawback.
The impact of modified gravity on the Sunyaev–Zeldovich effect
Authors: Mitchell Myles A , Arnold Christian , Hernández-Aguayo César , Li Baojiu 
Published: December 2020

ABSTRACT
We study the effects of two popular modified gravity theories, which incorporate very different screening mechanisms, on the angular power spectra of the thermal (tSZ) and kinematic (kSZ) components of the Sunyaev–Zeldovich effect. Using the first cosmological simulations that simultaneously incorporate both screened modified gravity and a complete galaxy formation model, we find that the tSZ and kSZ power spectra are significantly enhanced by the strengthened gravitational forces in Hu-Sawicki f(R) gravity and the normal-branch Dvali–Gabadadze–Porrati model. Employing a combination of non-radiative and full-physics simulations, we find that the extra baryonic physics present in the latter acts to suppress the tSZ power on angular scales l ≳ 3000 and the kSZ power on all tested scales, and this is found to have a substantial effect on the model differences. Our results indicate that the tSZ and kSZ power can be used as powerful probes of gravity on large scales, using data from current and upcoming surveys, provided sufficient work is conducted to understand the sensitivity of the constraints to baryonic processes that are currently not fully understood.
Physical effects on compact high-velocity clouds in the circumgalactic medium
Authors: Sander Bastian , Hensler Gerhard 
Published: December 2020

ABSTRACT
We numerically investigate the evolution of compact high-velocity clouds (CHVCs) passing through a hot, tenuous gas representing the highly ionized circumgalactic medium (CGM) by applying the adaptive-mesh refinement code flash. The model clouds start from both hydrostatic and thermal equilibrium and are in pressure balance with the CGM. Here, we present 14 models, divided into two mass categories and two metallicities each and different velocities. We allow for self-gravity and thermal conduction or not. All models experience mass diffusion, radiative cooling, and external heating leading to dissociation and ionization. Our main findings are (1) self-gravity stabilizes clouds against Rayleigh–Taylor instability, which is disrupted within 10 sound-crossing times without; (2) clouds can develop Jeans-instable regions internally even though they are initially below Jeans mass; (3) all clouds lose mass by ram pressure and Kelvin–Helmholtz instability; (4) thermal conduction substantially lowers mass-loss rates, by this, extending the clouds’ lifetimes, particularly, more than doubling the lifetime of low-mass clouds; (5) thermal conduction leads to continuous, filamentary stripping, while the removed gas is heated up quickly and mixes efficiently with the ambient CGM; (6) without thermal conduction the removed gas consists of dense, cool, clumpy fragments; (7) thermal conduction might prevent CHVCs from forming stars; and (8) clouds decelerated by means of drag from the ambient CGM form head-tail shapes and collapse after they reach velocities characteristic for intermediate-velocity clouds. Conclusively, only sophisticated modelling of CHVCs as non-homogeneous and non-isothermal clouds with thermal conduction and self-gravity explains observed morphologies and naturally leads to the suppression of star formation.
New insights into the WR nebula M1-67 with SITELLE
Authors: Sévigny Marcel , St-Louis Nicole , Drissen Laurent , Martin Thomas 
Published: December 2020

ABSTRACT
We present a detailed study of M1-67, a well-known nebula around the population I Wolf–Rayet star WR 124 (WNh 8), based on datacubes obtained with the imaging Fourier transform spectrometer SITELLE at the Canada–France–Hawaii Telescope. This allowed us to reconstruct detailed emission-line ratio maps that highlight clear orthogonal features from a chemical abundance point of view, a complete extinction map, as well as the electron density and temperature structures. In addition to this information, velocity maps were obtained shedding light on the bow shock structure due to the high velocity of WR124, qualified as a runaway star, which is about +190 km s−1 relative to the local interstellar medium. Interaction between the latter structure and spherical and non-spherical outburst could explain the global morphology of M1-67.
A low-frequency study of linear polarization in radio galaxies
Authors: Mahatma V H , Hardcastle M J , Harwood J , O’Sullivan S P , Heald G , Horellou C , Smith D J B 
Published: December 2020

ABSTRACTRadio galaxies are linearly polarized – an important property that allows us to infer the properties of the magnetic field of the source and its environment. However, at low frequencies, Faraday rotation substantially depolarizes the emission, meaning that comparatively few polarized radio galaxies are known at low frequencies. Using the LOFAR Two-metre Sky Survey at 150 MHz and at a resolution of 20 arcsec, we select 342 radio galaxies brighter than 50 mJy and larger than 100 arcsec in angular size, of which 67 are polarized (18 per cent detection fraction). These are predominantly Fanaroff–Riley type II sources. The detection fraction increases with total flux density, and exceeds 50 per cent for sources brighter than 1 Jy. We compare the sources in our sample detected by the LOw Frequency ARray (LOFAR) to those also detected in NRAO VLA Sky Survey at 1400 MHz, and find that our selection bias towards bright radio galaxies drives a tendency for sources depolarized between 1400 and 150 MHz to have flatter spectra over that frequency range than those that remain polarized at 150 MHz. By comparing observed rotation measures with an analytic model, we find that we are preferentially sensitive to sources in low-mass environments. We also infer that sources with one polarized hotspot are inclined by a small angle to the line of sight, while sources with hotspots in both lobes lie in the plane of the sky. We conclude that low-frequency polarization in radio galaxies is related to a combination of environment, flux density, and jet orientation.
Beyond halo mass: quenching galaxy mass assembly at the edge of filaments
Authors: Song Hyunmi , Laigle Clotilde , Hwang Ho Seong , Devriendt Julien , Dubois Yohan , Kraljic Katarina , Pichon Christophe , Slyz Adrianne , Smith Rory 
Published: December 2020

ABSTRACT
We examine how the mass assembly of central galaxies depends on their location in the cosmic web. The Horizon-AGN simulation is analysed at z ∼ 2 using the DisPerSE code to extract multi-scale cosmic filaments. We find that the dependency of galaxy properties on large-scale environment is mostly inherited from the (large-scale) environmental dependency of their host halo mass. When adopting a residual analysis that removes the host halo mass effect, we detect a direct and non-negligible influence of cosmic filaments. Proximity to filaments enhances the build-up of stellar mass, a result in agreement with previous studies. However, our multi-scale analysis also reveals that, at the edge of filaments, star formation is suppressed. In addition, we find clues for compaction of the stellar distribution at close proximity to filaments. We suggest that gas transfer from the outside to the inside of the haloes (where galaxies reside) becomes less efficient closer to filaments, due to high angular momentum supply at the vorticity-rich edge of filaments. This quenching mechanism may partly explain the larger fraction of passive galaxies in filaments, as inferred from observations at lower redshifts.
Baryonic effects on the detectability of annihilation radiation from dark matter subhaloes around the Milky Way
Authors: Grand Robert J J , White Simon D M 
Published: December 2020

Abstract
We use six, high-resolution ΛCDM simulations of galaxy formation to study how emission from dark matter annihilation is affected by baryonic processes. These simulations produce isolated, disc-dominated galaxies with structure, stellar populations, and stellar and halo masses comparable to those of the Milky Way. They resolve dark matter structures with mass above ∼106 $\rm M_{\odot }$ and are each available in both full-physics and dark-matter-only versions. In the full-physics case, formation of the stellar galaxy enhances annihilation radiation from the dominant smooth component of the galactic halo by a factor of three, and its central concentration increases substantially. In contrast, subhalo fluxes are reduced by almost an order of magnitude, partly because of changes in internal structure, partly because of increased tidal effects; they drop relative to the flux from the smooth halo by 1.5 orders of magnitude. The expected flux from the brightest Milky Way subhalo is four orders of magnitude below that from the smooth halo, making it very unlikely that any subhalo will be detected before robust detection of the inner Galaxy. We use recent simulations of halo structure across the full ΛCDM mass range to extrapolate to the smallest (Earth-mass) subhaloes, concluding, in contrast to earlier work, that the total annihilation flux from Milky Way subhaloes will be less than that from the smooth halo, as viewed both from the Sun and by a distant observer. Fermi-LAT may marginally resolve annihilation radiation from the very brightest subhaloes, which, typically, will contain stars.
Effects of calcitriol and paricalcitol on renal fibrosis in CKD
Authors: Martínez-Arias Laura , Panizo Sara , Alonso-Montes Cristina , Martín-Vírgala Julia , Martín-Carro Beatriz , Fernández-Villabrille Sara , García Gil-Albert Carmen , Palomo-Antequera Carmen , Fernández-Martín José Luis , Ruiz-Torres María Piedad , Dusso Adriana S , Carrillo-López Natalia , Cannata-Andía Jorge B , Naves-Díaz Manuel 
Published: December 2020

Abstract

Background
In chronic kidney disease, the activation of the renin–angiotensin–aldosterone system (RAAS) and renal inflammation stimulates renal fibrosis and the progression to end-stage renal disease. The low levels of vitamin D receptor (VDR) and its activators (VDRAs) contribute to worsen secondary hyperparathyroidism and renal fibrosis.

Methods
The 7/8 nephrectomy model of experimental chronic renal failure (CRF) was used to examine the anti-fibrotic effects of treatment with two VDRAs, paricalcitol and calcitriol, at equivalent doses (3/1 dose ratio) during 4 weeks.

Results
CRF increased the activation of the RAAS, renal inflammation and interstitial fibrosis. Paricalcitol treatment reduced renal collagen I and renal interstitial fibrosis by decreasing the activation of the RAAS through renal changes in renin, angiotensin receptor 1 (ATR1) and ATR2 mRNAs levels and renal inflammation by decreasing renal inflammatory leucocytes (CD45), a desintegrin and metaloproteinase mRNA, transforming growth factor beta mRNA and protein, and maintaining E-cadherin mRNA levels. Calcitriol showed similar trends without significant changes in most of these biomarkers.

Conclusions
Paricalcitol effectively attenuated the renal interstitial fibrosis induced by CRF through a combination of inhibitory actions on the RAAS, inflammation and epithelial/mesenchymal transition.
There May Be Many Arithmetical Gödel Sentences†
Authors: Lajevardi Kaave , Salehi Saeed 
Published: December 2020

AbstractWe argue that, under the usual assumptions for sufficiently strong arithmetical theories that are subject to Gödel’s First Incompleteness Theorem, one cannot, without impropriety, talk about the Gödel sentence of the theory. The reason is that, without violating the requirements of Gödel’s theorem, there could be a true sentence and a false one each of which is provably equivalent to its own unprovability in the theory if the theory is unsound.
Relationships between Physical Health and Employment among People with Serious Mental Illness
Authors: O’Neill Elizabeth A 
Published: December 2020

Abstract
Individuals with serious mental illness (SMI) have high rates of chronic physical health conditions and unemployment. Research suggests that a person’s health is related to their employment. Although available research indicates that mental health is related to employment for adults with SMI, there is a need for further inquiry regarding physical health. This study used data from three waves of the Medical Expenditures Panel Survey to examine multivariate relationships between physical health conditions, health-related quality of life (HRQOL), and employment among a sample of individuals with SMI (N = 648). Findings suggested that people with SMI and physical health conditions had lower HRQOL, compared with those with SMI only, and that physical and mental HRQOL mediated relationships between physical health conditions and employment. It is important to note that physical HRQOL had a stronger relationship with employment than mental HRQOL. These findings have important implications for integrated health care practice and research and policies aimed at expanding or restricting access to health care.
A Comprehensive Approach to Detect Hybridization Sheds Light on the Evolution of Earth’s Largest Lizards
Authors: Pavón-Vázquez Carlos J , Brennan Ian G , Keogh J Scott 
Published: December 2020

AbstractHybridization between species occurs more frequently in vertebrates than traditionally thought, but distinguishing ancient hybridization from other phenomena that generate similar evolutionary patterns remains challenging. Here, we used a comprehensive workflow to discover evidence of ancient hybridization between the Komodo dragon (Varanus komodoensis) from Indonesia and a common ancestor of an Australian group of monitor lizards known colloquially as sand monitors. Our data comprise $&gt;$300 nuclear loci, mitochondrial genomes, phenotypic data, fossil and contemporary records, and past/present climatic data. We show that the four sand monitor species share more nuclear alleles with $V$. komodoensis than expected given a bifurcating phylogeny, likely as a result of hybridization between the latter species and a common ancestor of sand monitors. Sand monitors display phenotypes that are intermediate between their closest relatives and $V$. komodoensis. Biogeographic analyses suggest that $V$. komodoensis and ancestral sand monitors co-occurred in northern Australia. In agreement with the fossil record, this provides further evidence that the Komodo dragon once inhabited the Australian continent. Our study shows how different sources of evidence can be used to thoroughly characterize evolutionary histories that deviate from a treelike pattern, that hybridization can have long-lasting effects on phenotypes, and that detecting hybridization can improve our understanding of evolutionary and biogeographic patterns.[Biogeography; introgression; Komodo dragon; phylogenetic networks; phylogenomics; reticulation; Varanus.]
Region-Wide Comprehensive Implementation of Roguing Infected Trees, Tree Replacement, and Insecticide Applications Successfully Controls Citrus Huanglongbing
Authors: Yuan Xiaoyong , Chen Cixiang , Bassanezi Renato Beozzo , Wu Feng , Feng Zheng , Shi Damin , Li Jinyun , Du Yimin , Zhong Ling , Zhong Balian , Lu Zhanjun , Song Xiang , Hu Yan , Ouyang Zhigang , Liu Xinjun , Xie Jinzhao , Rao Xi , Wang Xi , Wu Dapeng Oliver , Guan Zhengfei , Wang Nian 
Published: December 2020

Huanglongbing (HLB) is a devastating citrus disease worldwide. A three-pronged approach to controlling HLB has been suggested, namely, removal of HLB-symptomatic trees, psyllid control, and replacement with HLB-free trees. However, such a strategy did not lead to successful HLB control in many citrus-producing regions, such as Florida. We hypothesize that this is because of the small-scale or incomprehensive implementation of the program; conversely, a comprehensive implementation of such a strategy at the regional level can successfully control HLB. To test our hypothesis, we investigated the effects of region-wide comprehensive implementation of this scheme to control HLB in Gannan region, China, with a total planted citrus acreage of over 110,000 ha from 2013 to 2019. With the region-wide implementation of comprehensive HLB management, the overall HLB incidence in Gannan decreased from 19.71% in 2014 to 3.86% in 2019. A partial implementation of such a program (without a comprehensive inoculum removal) at the regional level in Brazil resulted in HLB incidence increasing from 1.89% in 2010 to 19.02% in 2019. Using dynamic regression model analyses with data from both Brazil and China, we constructed a model to predict HLB incidence when all three components were applied at 100%. It was predicated that in a region-wide comprehensive implementation of such a program, HLB incidence would be controlled to a level of less than 1%. We conducted economic feasibility analyses and showed that average net profits were positive for groves that implemented the comprehensive strategy, but groves that did not implement it had negative net profits over a 10-year period. Overall, the key for the three-pronged program to successfully control HLB is the large scale (region-wide) and comprehensiveness in implementation. This study provides valuable information to control HLB and other economically important endemic diseases worldwide. [Formula: see text] Copyright © 2021 The Author(s). This is an open access article distributed under the CC BY-NC-ND 4.0 International license .