bluuebunny/crossref_metadata_2025_split huggingface dataset:
Descripción de los pacientes con hemorragia intracerebral espontánea en el Hospital San José de Bogotá
Authors: Ospina Osorio Jeisson , Bedoya Álvaro , Patiño Javier 
Published: October 2019

Introducción: La hemorragia intracerebral espontánea (HIE) se ha convertido en una enfermedad con alta prevalencia quegenera una morbilidad y mortalidad considerable y más en nuestra región, con factores de riesgo ya conocidos por la literatura mundial, pero sin definir en nuestra población las características epidemiológicas de esta patología. Objetivos: Caracterizar los pacientes con hemorragia intracerebral espontánea como a la vez medir mortalidad y puntajes de uso clínico para esta patología. Materiales y Métodos: Se realizó de corte transversal en el período comprendido de noviembre de 2013 hasta diciembre de 2016, usando como criterios de selección pacientes con diagnóstico de hemorragia intracerebral espontánea o no traumática y edad mayor de 18 años. Resultados: Se encontraron 102 pacientes, con igual porcentaje en la aparición de hemorragia intracerebral espontánea entre los hombres y las mujeres, El 38% de los pacientes presentaron como antecedente hipertensión arterial, el 7% recibió algún tipo de intervención quirúrgica, 12 del total fallecieron a consecuencia de la HIE y de estos solo a uno de ellos se le realizo drenaje del hematoma intraparenquimatoso y se colocó una ventriculostomia. Conclusiones: Se encontraron resultados muy similares a los reportados en los diferentes estudios a nivel mundial, se debe implementar estudios prospectivos que permitan obtener más variables y resultados que permitan impactar en esta patología.
The Evolution of Binaries in a Gaseous Medium: Three-dimensional Simulations of Binary Bondi–Hoyle–Lyttleton Accretion
Authors: Antoni Andrea , MacLeod Morgan , Ramirez-Ruiz Enrico 
Published: October 2019

Abstract
Binary stars are common. While only those with small separations may exchange gas with one another, even the widest binaries interact with their gaseous surroundings. Drag forces and accretion rates dictate how these systems are transformed by these interactions. We perform three-dimensional hydrodynamic simulations of Bondi–Hoyle–Lyttleton flows, in which a binary moves supersonically relative to a homogeneous medium, using the adaptive mesh refinement code FLASH. We simulate a range of values of the initial semimajor axis of the orbit relative to the gravitational focusing impact parameter of the pair. When the binary separation is less than the gravitational focusing impact parameter, the pair orbits within a shared bow shock. When the pair is wider, each object has an individual bow shock structure. The long-term evolution of the binary is determined by the timescales for accretion, slowing of the center of mass, and orbital inspiraling. We find a clear hierarchy of these timescales; a binary’s center-of-mass motion is slowed over a shorter timescale than the pair inspirals or accretes. In contrast to previous analytic predictions, which assume an unperturbed background medium, we find that the timescale for orbital inspiraling is proportional to the semimajor axis to the 0.19 ± 0.01 power. This positive scaling indicates that gaseous drag forces can drive binaries either to coalescence or to the critical separation at which gravitational radiation dominates their further evolution. We discuss the implications of our results for binaries embedded in the interstellar medium, active galactic nuclei disks, and common envelope phases.
Curvature-induced Polarization and Spectral Index Behavior for PKS 1502+106
Authors: Shao Xi , Jiang Yunguo , Chen Xu 
Published: October 2019

Abstract
A comprehensive study of multifrequency correlations can shed light on the nature of variation for blazars. In this work, we collect the long-term radio, optical, and γ-ray light curves of PKS 1502+106. After performing the localized cross-correlation function analysis, we find that correlations between radio and γ-ray or V band are beyond the 3σ significance level. The lag of the γ-ray relative to 15 GHz is

days, translating to a distance of

parsec (pc) between them. Within uncertainties, the locations of the γ-ray and optical emitting regions are roughly the same, and are away from the jet base within 1.2 pc. The derived magnetic field in optical and γ-ray emitting regions is about 0.36 G. The logarithm of γ-ray flux is significantly linearly correlated with that of V-band fluxes, which can be explained by the synchrotron self-Compton process, the external Compton processes, or the combination of them. We find a significant linear correlation in the plot of

(polarization degree) versus

at V band, and use the empirical relation Π ∼ sin
n

θ′ (θ′ is the observing angle in the comoving frame blob) to explain it. The behaviors of color index (generally redder when brighter at the active state) and γ-ray spectral index (softer when brighter) could be well explained by the twisted jet model. These findings suggest that the curvature effect (mainly due to the change of the viewing angle) is dominant in the variation phenomena of fluxes, spectral indices, and polarization degrees for PKS 1502+106.
Solar Active Region Heating Diagnostics from High-temperature Emission Using the MaGIXS
Authors: Athiray P. S. , Winebarger Amy R. , Barnes Will T. , Bradshaw Stephen J. , Savage Sabrina , Warren Harry P. , Kobayashi Ken , Champey Patrick , Golub Leon , Glesener Lindsay 
Published: October 2019

Abstract
The relative amount of high-temperature plasma has been found to be a useful diagnostic to determine the frequency of coronal heating on sub-resolution structures. When the loops are infrequently heated, a broad emission measure (EM) over a wider range of temperatures is expected. A narrower EM is expected for high-frequency heating where the loops are closer to equilibrium. The soft X-ray spectrum contains many spectral lines that provide high-temperature diagnostics, including lines from Fe xvii–xix. This region of the solar spectrum will be observed by the Marshall Grazing Incidence Spectrometer (MaGIXS) in 2020. In this paper, we derive the expected spectral line intensity in MaGIXS to varying amounts of high-temperature plasma to demonstrate that a simple line ratio provides a powerful diagnostic to determine the heating frequency. Similarly, we examine ratios of AIA channel intensities, filter ratios from a XRT, and energy bands from the FOXSI sounding rocket to determine their sensitivity to this parameter. We find that both FOXSI and MaGIXS provide good diagnostic capabilities for high-temperature plasma. We then compare the predicted line ratios to the output of a numerical model and confirm that the MaGIXS ratios provide an excellent diagnostic for heating frequency.
A Fresh Look at Narrow-angle Tail Radio Galaxy Dynamics, Evolution, and Emissions
Authors: O’Neill Brian J. , Jones T. W. , Nolting Chris , Mendygral P. J. 
Published: October 2019

Abstract
We present a 3D magnetohydrodynamic study of narrow-angle tail (NAT) radio galaxy (RG) dynamics, including passive cosmic ray electrons. We follow the evolution of a bipolar-jet RG in a persistent crosswind through hundreds of Myr. We confirm traditional jet-bending models, while noting that our NAT exhibits a transitional morphology reminiscent of wide-angle radio tails. Once deflected, jets remain internally stable, but are intermittently disrupted by external disturbances induced by the NAT dynamics itself. The disruptions enhance jet and tail magnetic fields. Disrupted jet plasma is heterogeneously mixed with denser wind plasma, yielding patchy, filamentary tails that grow longer at a rate exceeding the wind speed. Such fast tail extension could, for example, allow NAT tails to overtake extraneous intracluster medium (ICM) features, such as shocks and shear layers downwind of where the tails first form. Those events, in turn, could generate enhanced radio emissions within the ICM features themselves that do not follow the geometrical extension of the tails past the encounter. Analysis of synthetic radio observations reveals an extended time period once the NAT has developed in which it displays a nearly steady-state morphology with integrated fluxes that are roughly constant, along with a self-similar, curved integrated spectrum. In an appendix, we outline a simple analytic jet trajectory formalism with one adjustable parameter, using it to illustrate explicit trajectories that extend the classic bending model to arbitrary jet–wind orientations.
Use cases for Taxonomic Name Services
Authors: Remsen David , Banki Olaf 
Published: October 2019

Catalogue of Life Plus (CoL+) was started in 2017 as a collaborative project between the Catalogue of Life (COL), the Global Biodiversity Information Facility (GBIF), Naturalis Biodiversity Center, Barcode of Life Database (BOLD), Biodiversity Heritage Library (BHL), Encyclopedia of Life (EOL), Integrated Taxonomic Information System (ITIS) and representatives from natural history museum collections. The participants jointly recognized a need for the wider biodiversity community to coalesce around common and coordinated approaches for mobilizing and inter-linking biodiversity data and information across a range of scales, themes and types. The Catalogue of Life was identified as being the clear choice to deliver taxonomic services to support these partners. Taxonomic services refer to solutions that address challenges inherent to scientific names: the ubiquitous, and often sole, contextual linkage between a biodiversity data object and the taxon to which it is linked. Without access to expert-mediated taxonomic knowledge, biodiversity data networks risk integrating or delivering biodiversity data that is incomplete or may not make taxonomic sense.
As a globally comprehensive and expert-mediated taxonomic resource, the Catalogue of Life is well-positioned to provide the underlying data and services to address these challenges and support a broad community of stakeholders. With financial support from the Netherlands Biodiversity Information Facility, the Netherlands Ministry of Education, Science, and Culture as well as technical support from GBIF, CoL+ represents an effort to stabilize the Catalogue of Life checklist products and refine a roadmap for future services -services that must be informed by the needs of users.
The COL+ initiative provides an opportunity to document and understand the requirements of both Col current users and a wider future user base. Key to any expansion is ensuring a clear understanding and the appropriate response to user needs. This includes not only the requirements of "taxonomic data consumer" stakeholders, such as those listed above, but also the needs and motivations of the expert taxonomic community behind the current and future Catalogue of Life.
This session will focus on reviewing the user requirements of a diverse community of both taxonomic data producers and consumers and organizing these stories into a set of categories from which we will identify clear and useful tools and services. These will establish the basis for a compelling roadmap for the Catalogue of Life as an enabling foundation to an interlinked and global biodiversity data infrastructure.
Mettre en débat la science, à quelles fins ?
Authors: Potdevin Valentine , Louvel Séverine 
Published: October 2019

Pourquoi, alors même que l’OPECST n’a pas vocation à promouvoir le débat public autour des sciences et technologies, les auditions publiques contradictoires y sont-elles aujourd’hui incontournables ? L’article retrace leur histoire et met en évidence les raisons pragmatiques, stratégiques et épistémiques de leur montée en puissance comme dispositif de consultation au sein de cette institution.
Strong correspondence between nitrogen isotope composition of foliage and chlorin across a rainfall gradient: implications for paleo-reconstruction of the nitrogen cycle
Authors: Goulden Sara K. E. , Ohkouchi Naohiko , Freeman Katherine H. , Chikaraishi Yoshito , Ogawa Nanako O. , Suga Hisami , Chadwick Oliver , Houlton Benjamin Z. 
Published: October 2019

Abstract. Nitrogen (N) availability influences patterns of
terrestrial productivity and global carbon cycling, imparting strong but
poorly resolved feedbacks on Earth's climate system. Central questions
concern the timescale of N cycle response to elevated CO2 concentration
in the atmosphere and whether availability of this limiting nutrient
increases or decreases with climate change. Nitrogen isotopic composition of
bulk plant leaves provides information on large-scale patterns of N
availability in the modern environment. Here we examine the utility of
chlorins, degradation products of chlorophyll, hypothesized to persist in
soil subsequent to plant decay, as proxies for reconstructing past plant
δ15N. Specifically, we test the hypothesis that δ15N of plant leaves (δ15Nleaf) is recorded in
δ15N of pheophytin a (δ15Npheo) along the
leaf–litter–soil continuum across an array of ecosystem climate conditions
and plant functional types (C3, C4, legumes, and woody plants). The δ15N of live foliage and bulk soil display marked declines with
increasing rainfall, consistent with past studies in Hawaii and patterns
worldwide. We find measurable chlorin concentrations along soil–depth
profiles at all sites, with pheophytin a present in amounts required for
isotopic analysis (>10 nmol). δ15Npheo in
leaves, litter, and soil track δ15Nleaf of plant leaves.
We find potential for δ15Npheo records from soil to
provide proxy information on δ15Nleaf.
The SP19 chronology for the South Pole Ice Core – Part 1: volcanic matching and annual layer counting
Authors: Winski Dominic A. , Fudge Tyler J. , Ferris David G. , Osterberg Erich C. , Fegyveresi John M. , Cole-Dai Jihong , Thundercloud Zayta , Cox Thomas S. , Kreutz Karl J. , Ortman Nikolas , Buizert Christo , Epifanio Jenna , Brook Edward J. , Beaudette Ross , Severinghaus Jeffrey , Sowers Todd , Steig Eric J. , Kahle Emma C. , Jones Tyler R. , Morris Valerie , Aydin Murat , Nicewonger Melinda R. , Casey Kimberly A. , Alley Richard B. , Waddington Edwin D. , Iverson Nels A. , Dunbar Nelia W. , Bay Ryan C. , Souney Joseph M. , Sigl Michael , McConnell Joseph R. 
Published: October 2019

Abstract. The South Pole Ice Core (SPICEcore) was drilled in 2014–2016 to provide a
detailed multi-proxy archive of paleoclimate conditions in East Antarctica
during the Holocene and late Pleistocene. Interpretation of these records
requires an accurate depth–age relationship. Here, we present the SPICEcore (SP19) timescale for the age of the ice of SPICEcore. SP19 is synchronized to the
WD2014 chronology from the West Antarctic Ice Sheet Divide (WAIS Divide) ice
core using stratigraphic matching of 251 volcanic events. These events
indicate an age of 54 302±519 BP (years before 1950) at the
bottom of SPICEcore. Annual layers identified in sodium and magnesium ions
to 11 341 BP were used to interpolate between stratigraphic volcanic tie
points, yielding an annually resolved chronology through the Holocene.
Estimated timescale uncertainty during the Holocene is less than 18 years
relative to WD2014, with the exception of the interval between 1800 to 3100
BP when uncertainty estimates reach ±25 years due to widely spaced
volcanic tie points. Prior to the Holocene, uncertainties remain within 124 years relative to WD2014. Results show an average Holocene accumulation rate
of 7.4 cm yr−1 (water equivalent). The time variability of accumulation rate
is consistent with expectations for steady-state ice flow through the modern
spatial pattern of accumulation rate. Time variations in nitrate
concentration, nitrate seasonal amplitude and δ15N of N2 in turn are as expected for the accumulation rate variations. The highly
variable yet well-constrained Holocene accumulation history at the site can
help improve scientific understanding of deposition-sensitive climate
proxies such as δ15N of N2 and photolyzed chemical
compounds.
Anomalies of dwellers' collective geotagged behaviors in response to rainstorms: a case study of eight cities in China using smartphone location data
Authors: Yi Jiawei , Du Yunyan , Liang Fuyuan , Pei Tao , Ma Ting , Zhou Chenghu 
Published: October 2019

Abstract. Understanding city residents' collective geotagged behaviors (CGTBs) in
response to hazards and emergency events is important in disaster
mitigation and emergency response. It is a challenge, if not impossible, to
directly observe CGTBs during a real-time matter. This study used the number
of location requests (NLR) data generated by smartphone users for a variety
of purposes such as map navigation, car hailing, and food delivery to
infer the dynamics of CGTBs in response to rainstorms in eight Chinese cities. We examined rainstorms, flooding, and NLR anomalies, as well as the
associations among them, in eight selected cities across mainland China.
The time series NLR clearly reflects cities' general diurnal rhythm, and the
total NLR is moderately correlated with the total city population. Anomalies
of the NLR were identified at both the city and grid scale using the Seasonal Hybrid Extreme Studentized Deviate (S-H-ESD) method. Analysis results demonstrated that the NLR anomalies at the city and
grid levels are well associated with rainstorms, indicating that city residents
request more location-based services (e.g., map navigation, car hailing, food delivery, etc.) when there is a rainstorm. However, the sensitivity of the city residents' collective geotagged behaviors in response to rainstorms varies in different cities as shown by different peak rainfall intensity
thresholds. Significant high peak rainfall intensity tends to trigger city
flooding, which leads to increased location-based requests as shown by
positive anomalies in the time series NLR.
Del enfrentamiento histórico entre Estado e Iglesia en México, al aprovechamiento económico del conflicto cristero a través del turismo religioso
Authors: Millán Vázquez de la Torre Maria Genoveva , Martínez Cárdenas Rogelio , Arjona Fuentes Juan Manuel 
Published: October 2019

Este artículo analiza el conflicto armado entre diversos grupos sociales y el Estado de México (La Guerra Cristera, 1926-1929, cuyo origen fue la aprobación de un decreto nacional que limitaba la actividad y posesión de bienes por parte de la Iglesia Católica) asi como, el aprovechamiento económico de dicho conflicto a traves de la creación de un producto turistico “La Ruta Cristera” explotando el movimiento de peregrinación para visitar lugares relacionados con los 25 santos cristeros (personas canonizadas por la Iglesia Católica que fallecieron en dicha guerra) y que cada día tiene mas auge principalmente en el pueblo mexicano.
DISPONIBILIZAÇÃO DE METADADOS EM LINKED DATA PARA REPOSITÓRIOS DIGITAIS
Authors: Arakaki Felipe Augusto , Coneglian Caio Saraiva , Santos Plácida Leopoldina Ventura Amorim da Costa , Santarem Segundo José Eduardo 
Published: October 2019

Considerando la expansión de la producción científica en ambientes informacionales digitales y las nuevas formas de disponibilización de datos siguiendo los principios Linked Data, se objetivó discutir posibilidades de relacionamiento de datasets y enriquecimiento semántico de metadatos en repositorios digitales. Adicionalmente, presentar un modelo de conversión de registros en RDF. Es una investigación teórica y exploratoria, que realizó una revisión bibliográfica sobre repositorios digitales y Linked Data. Se demostraron posibilidades del proceso de conversión, con la identificación de bases de datos, vocabularios y estándares que deben ser adoptados para que los datos generados sean enriquecidos semánticamente. El trabajo presenta un modelo que refleja los pasos a ser aplicados durante el proceso de disponibilización de metadatos de un repositorio digital en Linked Data. Se concluye que la integración entre repositorios digitales y las tecnologías de la Web Semántica permite la disponibilización de datos en Linked Data, la cual proporciona nuevos medios para la divulgación y la integración de los recursos en la Web.
Considering the expansion of scientific production in digital information environments and the new forms of data availability following the principles of Linked Data, the objective is to discuss possibilities of relationships of datasets and semantic enrichment of metadata in digital repositories and present a model of conversion of records in RDF. It is a theoretical and exploratory research, performing a bibliographic review on digital repositories and Linked Data. In this way, we have demonstrated possibilities of the conversion process, identifying databases, vocabularies and standards that must be adopted so that the generated data is enriched semantically. The work presented a model that reflects the steps that must be taken in the process of making available the metadata of a digital repository in Linked Data. It is concluded that the integration between digital repositories and Semantic Web technologies allows the availability of data in Linked Data, which provides new means for the dissemination and integration of resources on Web.
Comparison of Orthodontic Treatment with Different Premolar Extraction Modalities İn Terms of Soft Tissue Profile
Authors: ATİK Ezgi , GORUCU-COSKUNER Hande , TANER Tulin 
Published: October 2019

Objectives:To evaluate the differences of changes in soft tissue profile and dentoskeletal parameters between different premolar extraction and non-extraction treatment modalities. Materials and Methods: 50 patients with skeletal Class I malocclusion was divided into three groups. Group 1 consisted 17 patients (mean age:16.76±1.68 years) treated with maxillary and mandibular first premolar extractions; Group 2 consisted 16 patients (mean age:15.81±1.19 years) treated with maxillary and mandibular second premolar extractions, and Group 3 consisted 17 patients (mean age:16.29±1.15 years) treated with non-extraction protocol. From the pre-treatment (T0) and post-treatment (T1) cephalometric radiographs, 13 measurements for dentoskeletal and 15 for soft tissue parameters were assessed. To determine changes due to treatment, and to compare differences among the groups, Wilcoxon Signed-Rank and Kruskal-Wallis tests were performed, respectively.Results: Mx1-SN, Mx1-FH, Mx1-NA, IMPA and Md1-NB values decreased significantly in Group 1 and 2, compared to Group 3 (p&lt;0.001). According to the vertical reference line (VRL-li) and E-plane (E-LL), the lower lip showed statistically significant change (retraction) in Group 1 and 2, compared to non-extraction group (p&lt;0.05). The mean change value for the upper and lower lip thicknesses in Group 1 and 2 were greater than in Group 3 (p&lt;0.05). Group 1 and 2 did not show significant difference in any dentoskeletal and soft tissue measurements between each other. Conclusions:Soft tissue profile change following extraction treatment was similar regardless of the extracted teeth. However extraction treatment modalities resulted in significant profile changes especially in the lower lip with regard to the non-extraction control group.