bluuebunny/crossref_metadata_2025_split huggingface dataset:
Tratamiento de agua basado en la adsorción de crudo en nanopartículas polares y no polares
Authors: Martínez Aguilar Maricelly , Cortés Farid Bernardo , Franco Ariza Camilo Andrés 
Published: May 2017

Uno de los impactos de la producción de petróleo es el aumento de la contaminación debido a la descarga de aguas de formación. Este documento presenta el estudio de la adsorción de crudo en nanopartículas de sílice funcionalizada con residuos de refinería (VR) al 2 y al 4 %wt. Además de zeolita y zeolita modificada (2 y 4%wt de VR) para reducir la cantidad de crudo en las emulsiones crudo/agua (W/O). Los modelos de Langmuir y Freundlich se usaron para ajustar las isotermas de adsorción a los datos experimentales. El rango de la concentración de crudo inicial fue desde 200 hasta 2000 mg/l. El cambio en la concentración después de la adsorción se determinó utilizando un espectrofotómetro UV visible. La cantidad máxima de adsorción se obtuvo con nanopartículas de sílice modificada al 4% para una concentración inicial de 200 mg/g con una eliminación de crudo del 100%, 9 mg/g más que la obtenida con zeolita modificada de 191 mg/g a la misma concentración. Los modelos de pseudo primer y pseudo segundo orden se usaron para ajustar los datos experimentales de la cinética de adsorción obtenidos a diferentes concentraciones de crudo, con mejores resultados para el modelo de pseudo segundo orden.
Plataforma de HPC portable de bajo consumo energético para aplicaciones de minería de datos
Authors: Carranza Sánchez Armando Saúl , Verduzco Ramírez Jesús Alberto , Farías Mendoza Nicandro , Cervantes Zambrano Francisco , Rodríguez Haro Fernando 
Published: May 2017

La necesidad de plataformas computacionales que proporcionen soporte a las aplicaciones denominadas intensivas ha estado incrementándose en muchas organizaciones debido al surgimiento de una serie de aplicaciones que requieren de manejo intensivo de datos y tiempos de respuesta cortos. Un ejemplo pueden ser las aplicaciones que utilizan la minería de datos. El hardware ha evolucionado de manera acelerada para satisfacer estas necesidades del cómputo intensivo. Por otro lado, pequeñas computadoras montadas en tarjetas denominadas SoC (System on Chip) (R., G., y M., 2013) han aparecido a partir de la miniaturización de componentes y la popularización de los sistemas embebidos, El ejemplo más significativo es Raspberry Pi (raspberrypi, 2016), una alternativa de bajo costo y consumo energético reducido que permite realizar tareas de cómputo. Debido a su popularidad, los fabricantes se han dedicado a incrementar su desempeño generando modelos con mayores prestaciones, los cuales se han vuelto una opción viable para el procesamiento intensivo de datos. Aquí analizamos dicho aspecto. Para ello se describe la construcción de una plataforma de HPC basada en tarjetas SoC, lo que permite desarrollar y ejecutar aplicaciones de minería de datos. Los resultados obtenidos en las diferentes pruebas de operación y tolerancia a fallas muestran que dicha plataforma ofrece el rendimiento y la robustez necesarios para ser utilizada en el desarrollo de aplicaciones de minería de datos orientadas a la educación y también para la enseñanza de la disciplina antes mencionada, con una inversión que es posible alcanzar en instituciones académicas y pequeñas organizaciones.
Widening of the safe trajectory range during subaxial cervical pedicle screw placement: advantages of a curved pedicle probe and laterally located starting point without creating a funnel-shaped hole
Authors: Lee Subum , Seo Junghan , Lee Moon Kyu , Jeon Sang Ryong , Roh Sung Woo , Rhim Seung Chul , Park Jin Hoon 
Published: May 2017

OBJECTIVEThe small diameter of cervical pedicles and a large transverse cervical pedicle angle are challenges that have led spinal surgeons to investigate how they could achieve a wider safety trajectory and reduce the insertion angle during cervical pedicle screw (CPS) placement. In this paper, the authors detail the advantages of using a curved pedicle probe and a laterally located entry point for overcoming these challenges.METHODSFrom March 2012 to May 2016, the authors performed posterior cervical fusions using CPSs on 119 consecutive patients. The lateral mass screw conversion and the CPS breach rate were analyzed. Using preoperative CT, it was determined that θlat is similar to the anatomical pedicle angle, and θmed is the minimally acceptable medial angle. The actual insertion medial angle (θins) was determined by postoperative CT. To identify how much of the medial angle on θins could be reduced from the anatomical pedicle angle (θlat), and how much closer to θmed, (θins−θmed) / (θlat−θmed) was calculated. To verify shifting of the entry point and widening of the trajectory, the mean df/Df (i.e., shifted facet point/planned facet point) values were analyzed.RESULTSThe total number of planed CPSs was 759, the conversion rate was 4.61% (35/759), and the accuracy rate was 95.9% (694/724). The authors could calculate that θins could be expected near the 90%, 80%, 80%, 80%, and 110% value of θlat on C-3, C-4, C-5, C-6, and C-7 levels, respectively, with the (θins−θmed) / (θlat−θmed) equation. The mean df/Df values were 0.64, 0.62, 0.63, 0.63, and 1.24 on the C3–7 levels, respectively.CONCLUSIONSThrough the use of a curved pedicle probe and a laterally located starting point, the planned and laterally located entry point medial shift was made during CPS placement. The entry point shift yielded a wider, safe trajectory and reduced the burden of making a large medial angle, similar to an anatomical cervical pedicle lateral angle, for safe CPS placement without creating a funnel-shaped hole.
Pseudogout of the cervical and thoracic spine mimicking infection after lumbar fusion: case report
Authors: Bridges Kelly J. , Bullis Carli L. , Wanchu Ajay , Than Khoi D. 
Published: May 2017

Pseudogout is a form of acute calcium pyrophosphate deposition (CPPD) disease that typically afflicts the elderly. CPPD commonly involves larger joints, such as the knees, wrists, shoulders, and hips, and has been known to involve the spine.The authors report the case of a 66-year-old woman with a recent history of lumbar laminectomy and fusion who presented 5 weeks postprocedure with a clinical and radiographic picture consistent with multilevel skip lesions involving the cervical and thoracic spine, thoracic discitis, and epidural abscess. Serial blood cultures and repeat biopsy samples were sterile. Subsequent wrist and ankle erythema, pain, and swelling led to synovial fluid analysis, and pseudogout was diagnosed. She was treated with an interleukin-1 inhibitor with immediate symptom relief.To the authors’ knowledge, this is only the second report of spinal pseudogout presenting with a clinical and radiographic picture consistent with discitis and epidural abscess. This report is the first to report skip lesions of pseudogout occurring throughout the spine that are uniquely remote from a recent lumbar surgery.
Sagittal craniosynostosis: a utility outcomes study
Authors: Kuta Victoria , McNeely P. Daniel , Walling Simon , Bezuhly Michael 
Published: May 2017

OBJECTIVESagittal craniosynostosis results in a characteristic scaphocephalic head shape that is typically corrected surgically during a child’s 1st year of life. The authors’ objective was to determine the potential impact of being born with sagittal craniosynostosis by using validated health state utility assessment measures.METHODSAn online utility assessment was designed to generate health utility scores for scaphocephaly, monocular blindness, and binocular blindness using standardized utility assessment tools, namely the visual analog scale (VAS) and the standard gamble (SG) and time trade-off (TTO) tests. Utility scores were compared between health states using the Wilcoxon and Kruskal-Wallis tests. Univariate regression was performed using age, sex, income, and education as independent predictors of utility scores.RESULTSOver a 2-month enrollment period, 122 participants completed the online survey. One hundred eighteen participants were eligible for analysis. Participants rated scaphocephaly due to sagittal craniosynostosis with significantly higher (p < 0.001) median utility scores (VAS 0.85, IQR 0.76–0.95; SG 0.92, IQR 0.84–0.98; TTO 0.91, IQR 0.84–0.95) than both monocular blindness (VAS 0.60, IQR 0.50–0.70; SG 0.84, IQR 0.68–0.94; TTO 0.84, IQR 0.67–0.91) and binocular blindness (VAS 0.25, IQR 0.20–0.40; SG 0.51, IQR 0.18–0.79; TTO 0.55, IQR 0.36–0.76). No differences were noted in utility scores based on participant age, sex, income, or education.CONCLUSIONSUsing objective health state utility scores, authors of the current study demonstrated that the preoperatively perceived burden of scaphocephaly in a child’s 1st year of life is less than that of monocular blindness. These relatively high utility scores for scaphocephaly suggest that the burden of disease as perceived by the general population is low and should inform surgeons’ discussions when offering morbid corrective surgery, particularly when driven by aesthetic concerns.
Revolutionary Preoccupations: Or, Transatlantic Feeling in a Radical Sense
Authors: Coghlan J. Michelle 
Published: May 2017

Chronicling the Commune’s returns across a surprisingly vast and visually striking archive of periodical poems and illustrations, panoramic spectacles, children’s adventure fiction, popular and canonical novels, political pamphlets, avant-garde theater productions, and radical pulp, this book argues that the Commune became, for writers and readers across virtually all classes and political persuasions, a critical locus for re-occupying both radical and mainstream memory of revolution and empire, a key site for negotiating post-bellum gender trouble and regional reconciliation, and a vital terrain for rethinking Paris—and what it meant to be an American there—in U.S. fiction and culture. For Americans felt Paris to be curiously their own long before the Moderns made it their hometown. This introductory chapter explores the key words at the heart of the book, and offers a taste of its material terrain. It concludes with an overview of its subsequent chapters.
Tasting Space: Sights of the Commune in Henry James’s Paris
Authors: Coghlan J. Michelle 
Published: May 2017

This chapter moves from sights of Paris as a revolutionary underground to sites of Paris in ruin, from unexpected forms of imperial adventure or subterranean possibility to uncanny forms of affective possession. While The American Scene has been the privileged site to examine Henry James’s fascination with—and affective responses to—lost landmarks and newly minted ruins, I excavate the sights of and detours around the post-Commune ruins of Paris in his writings and contemporary periodical culture. Situating James’s attention to charred landscape and vanished tourist sights alongside their ongoing returns in U.S. print and visual culture, I suggest, crucially reconfigures James’s transformative and uncannily embodied “historic sense” even as it recovers the post-Commune ruinscape that came to function as an unexpectedly charged site of transnational memory in U.S. literary, visual and performance culture.
Barricades Revisited – the Commune on Campus from FSM to SDS
Authors: Coghlan J. Michelle 
Published: May 2017

This epilogue examines the Commune’s re-ignition in the 1960s. Returning to Endore’s likening of the uprising to a “free-for-all,” I argue that this conjuration—lacking the top down organization of a party, prone to spring up anywhere unannounced—would survive the reign of McCarthy and the crackdown that did so much to dissipate radical memory and, with it, 1871’s resonance in the U.S. I show how the story of the Commune that would survive the 1950s offered future radicals not so much a program as a promise—a memory of a revolutionary future that might be “vomited up” at any moment. I anchor my discussion in two pivotal eruptions of the Commune on campus: Mario Savio’s invocations of it during the Free Speech Movement demonstrations at UC Berkeley as a model of campus activism and taking “only what is ours,” and its more literal restaging five years later as student protestors at Columbia University turned to 1871 to make sense of their own cultural moment, dubbing themselves “Communards” as they reoccupied this once again vital and viral revolutionary past.
Two Small Transiting Planets and a Possible Third Body Orbiting HD 106315
Authors: Crossfield Ian J. M. , Ciardi David R. , Isaacson Howard , Howard Andrew W. , Petigura Erik A. , Weiss Lauren M. , Fulton Benjamin J. , Sinukoff Evan , Schlieder Joshua E. , Mawet Dimitri , Ruane Garreth , de Pater Imke , de Kleer Katherine , Davies Ashley G. , Christiansen Jessie L. , Dressing Courtney D. , Hirsch Lea , Benneke Björn , Crepp Justin R. , Kosiarek Molly , Livingston John , Gonzales Erica , Beichman Charles A. , Knutson Heather A. 
Published: May 2017

Abstract
The masses, atmospheric makeups, spin–orbit alignments, and system architectures of extrasolar planets can be best studied when the planets orbit bright stars. We report the discovery of three bodies orbiting HD 106315, a bright (V = 8.97 mag) F5 dwarf targeted by our K2 survey for transiting exoplanets. Two small transiting planets are found to have radii

and

and orbital periods 9.55 days and 21.06 days, respectively. A radial velocity (RV) trend of 0.3 ± 0.1 m s−1 day−1 indicates the likely presence of a third body orbiting HD 106315 with period ≳160 days and mass ≳45 M
⊕. Transits of this object would have depths ≳0.1% and are definitively ruled out. Although the star has v sin i = 13.2 km s−1, it exhibits a short-timescale RV variability of just 6.4 m s−1. Thus, it is a good target for RV measurements of the mass and density of the inner two planets and the outer object’s orbit and mass. Furthermore, the combination of RV noise and moderate v sin i makes HD 106315 a valuable laboratory for studying the spin–orbit alignment of small planets through the Rossiter–McLaughlin effect. Space-based atmospheric characterization of the two transiting planets via transit and eclipse spectroscopy should also be feasible. This discovery demonstrates again the power of K2 to find compelling exoplanets worthy of future study.
Cosmic Reionization on Computers: Properties of the Post-reionization IGM
Authors: Gnedin Nickolay Y. , Becker George D. , Fan Xiaohui 
Published: May 2017

Abstract
We present a comparison between several observational tests of the post-reionization intergalactic medium and the numerical simulations of reionization completed under the Cosmic Reionization On Computers (CROC) project. The CROC simulations match the gap distribution reasonably well, and also provide a good match for the distribution of peak heights, but there is a notable lack of wide peaks in the simulated spectra and the flux-probability distribution functions are poorly matched in the narrow redshift interval

, with the match at other redshifts being significantly better, albeit not exact. Both discrepancies are related: simulations show more opacity than the data.
Thermal-diffusional Instability in White Dwarf Flames: Regimes of Flame Pulsation
Authors: Xing Guangzheng , Zhao Yibo , Modestov Mikhail , Zhou Cheng , Gao Yang , Law Chung K. 
Published: May 2017

Abstract
Thermal-diffusional pulsation behaviors in planar as well as outwardly and inwardly propagating white dwarf (WD) carbon flames are systematically studied. In the 1D numerical simulation, the asymptotic degenerate equation of state and simplified one-step reaction rates for nuclear reactions are used to study the flame propagation and pulsation in WDs. The numerical critical Zel’dovich numbers of planar flames at different densities (ρ = 2, 3, and 4 × 107 g cm−3) and of spherical flames (with curvature c = −0.01, 0, 0.01, and 0.05) at a particular density (ρ = 2 × 107 g cm−3) are presented. Flame front pulsation in different environmental densities and temperatures are obtained to form the regime diagram of pulsation, showing that carbon flames pulsate in the typical density of 2 × 107 g cm−3 and temperature of 0.6 × 109 K. While being stable at higher temperatures, at relatively lower temperatures, the amplitude of the flame pulsation becomes larger. In outwardly propagating spherical flames the pulsation instability is enhanced and flames are also easier to quench due to pulsation at small radius, while the inwardly propagating flames are more stable.
Atomic Data Revisions for Transitions Relevant to Observations of Interstellar, Circumgalactic, and Intergalactic Matter
Authors: Cashman Frances H. , Kulkarni Varsha P. , Kisielius Romas , Ferland Gary J. , Bogdanovich Pavel 
Published: May 2017

Abstract
Measurements of element abundances in galaxies from astrophysical spectroscopy depend sensitively on the atomic data used. With the goal of making the latest atomic data accessible to the community, we present a compilation of selected atomic data for resonant absorption lines at wavelengths longward of 911.753 Å (the H i Lyman limit), for key heavy elements (heavier than atomic number 5) of astrophysical interest. In particular, we focus on the transitions of those ions that have been observed in the Milky Way interstellar medium (ISM), the circumgalactic medium (CGM) of the Milky Way and/or other galaxies, and the intergalactic medium (IGM). We provide wavelengths, oscillator strengths, associated accuracy grades, and references to the oscillator strength determinations. We also attempt to compare and assess the recent oscillator strength determinations. For about 22% of the lines that have updated oscillator strength values, the differences between the former values and the updated ones are ≳0.1 dex. Our compilation will be a useful resource for absorption line studies of the ISM, as well as studies of the CGM and IGM traced by sight lines to quasars and gamma-ray bursts. Studies (including those enabled by future generations of extremely large telescopes) of absorption by galaxies against the light of background galaxies will also benefit from our compilation.
An Accurate Flux Density Scale from 50 MHz to 50 GHz
Authors: Perley R. A. , Butler B. J. 
Published: May 2017

Abstract
The flux-density scale of Perley & Butler is extended downward to ∼50 MHz by utilizing recent observations with the Karl G. Jansky Very Large Array (VLA) of 20 sources between 220 MHz and 48.1 GHz, and legacy VLA observations at 73.8 MHz. The derived spectral flux densities are placed on an absolute scale by utilizing the Baars et al. values for Cygnus A (3C405) for frequencies below 2 GHz, and the Mars-based polynomials for 3C286, 3C295, and 3C196 from Perley & Butler above 2 GHz. Polynomial expressions are presented for all 20 sources, with accuracy limited by the primary standards to 3%–5% over the entire frequency range. Corrections to the scales proposed by Perley & Butler, and by Scaife & Heald are given.
De la recherche à la création d’entreprise : un potentiel considérable
Authors: Lewiner Jacques 
Published: May 2017

Jacques Lewiner, qui a expérimenté tous les maillons depuis la recherche fondamentale jusqu’à la création d’entreprise, délivre un message optimiste : il suffit de peu pour débloquer les verrous qui bridaient les retombées économiques de la recherche française.
Les disparités d’absentéisme à l’hôpital sont-elles associées à des différences de conditions de travail ?
Authors: Pollak Catherine , Ricroch Layla 
Published: May 2017

Cet article analyse les disparités de recours aux arrêts de travail à l’hôpital entre secteurs public et privé, entre professions et entre hommes et femmes, en prenant en compte les conditions de travail des personnels hospitaliers (enquête Conditions de travail [2013]). Les résultats indiquent l’absence de différence significative de sinistralité entre les secteurs public et privé. Les écarts importants d’arrêts maladie entre professions semblent pouvoir s’expliquer intégralement par des différences de conditions de travail ; principalement par les contraintes physiques. Les femmes ont davantage d’arrêts maladie que les hommes, mais uniquement à l’âge des grossesses.
Railway side mapping of alien plant distributions in Mpumalanga, South Africa
Authors: Mararakanye Ndifelani , Magoro Modau N. , Matshaya Nomakhazi N. , Rabothata Matome C. , Ncobeni Sthembele R. 
Published: May 2017

Background: Alien plant invasions are among the major threats to natural and semi-natural ecosystems in South Africa on approximately 18 million hectares of land. Much of the available data are not suitable for planning of local scale management because it is presented at a quarter degree grid square scale, which makes accurate location and estimates of invaded areas difficult.Objectives: The aim was to identify the dominant alien plant species and quantify their areal extent along a 479 km railway corridor in the Mpumalanga province.Method: The extent of the invaded area was obtained by manual digitising of alien plant distribution and density from Satellite Pour l’Observation de la Terre 5 imagery and by further applying an Iterative Self-Organising Data Analysis technique of the unsupervised classification method. Species’ occurrences were located and identified in the field using a Global Positioning System.Results: The most dominant invaders in terms of the number of individual polygons and the infested area were Eucalyptus spp., Acacia spp., Populus alba L., Pinus patula Schltdl Cham., Salix babylonica L. and Caesalpinia decapetala (Roth) Alston. These species have also been previously classified as major invaders, although the Conservation of Agricultural Resources Act regulations permit their planting provided spreading to adjacent areas is avoided except for C. decapetala, which must be cleared under all circumstances.Conclusion: Knowledge of the species’ occurrence and their extent will assist landowners and relevant authorities to control the spread of alien plants, which impact rail safety, agricultural production, water availability and biodiversity.