bluuebunny/crossref_metadata_2025_split huggingface dataset:
Jornada escolar partida y continua. ¿Existen evidencias que motiven el cambio en la gestión del tiempo escolar en España?
Authors: Morales Yago Francisco José , Galán Arturo , Pérez Juste Ramón 
Published: July 2017

El efecto del tipo de jornada escolar (partida frente a continua) sobre los resultados de los estudiantes ha sido un tema poco estudiado, aunque conflictivo en el ámbito nacional por sus implicaciones sociales y laborales. Los objetivos generales del trabajo son dos: Primero, constatar si existe asociación entre resultados académicos y tipo de jornada escolar y, segundo, analizar las preferencias del profesorado por un tipo u otro de jornada y las razones que las motivan. Trascurridas tres décadas desde que comenzó a implantarse la jornada continua en algunas comunidades autónomas, se puede concluir que los progresos académicos esperados han sido reducidos y equiparables a los experimentados por comunidades que han permanecido en jornada escolar partida. Para realizar un estudio de la cuestión desde la percepción del profesorado, se ha utilizado metodología de encuesta (N=400), combinada con entrevistas semiestructuradas (N=30). Los resultados evidencian que los profesores prefieren la jornada escolar continua, aduciendo motivos como la posibilidad de incrementar su formación o menos desplazamientos al centro.
Evaluación de competencias prácticas clínicas por el alumnado y el profesorado a través del portafolios
Authors: García Sanz Maria Paz , García-Estañ López Joaquín , Martínez Martinez Francisco , Pérez Bernabeu Alicia , Santonja Medina Fernando 
Published: July 2017

La evaluación de las competencias prácticas clínicas que los estudiantes de Medicina adquieren al realizar su rotatorio en un hospital es algo bastante inusual en la universidad española. Y mucho menos lo es la participación del alumnado en dicha evaluación. Las prácticas son obligatorias, sin más, no están sujetas a ninguna evaluación. En esta investigación, mediante la utilización de un portafolios y una lista de verificación, se pretendió conocer el porcentaje de estudiantes que cursan 5º de Licenciado en Medicina que adquiere las competencias y resultados de aprendizaje previstos para este período de tiempo en la asignatura de Traumatología, tanto desde la percepción del profesorado como del alumnado. Los resultados indicaron que, a nivel global, según los alumnos, el porcentaje de éstos que desarrollaron las competencias fue notable, mientras que, para los docentes, dicho porcentaje fue moderado. Prácticamente en todos los resultados de aprendizaje los estudiantes realizaron valoraciones superiores al profesorado, no existiendo en la mayoría de las ocasiones correlación significativa entre sendas percepciones. Asimismo, no se encontraron diferencias significativas en función del sexo de los estudiantes y únicamente en algunas ocasiones, sí se hallaron en función del hospital en el que los alumnos realizaron sus prácticas. Como conclusión, expresamos la necesidad de ir mejorando progresivamente el portafolios como instrumento de aprendizaje y evaluación de competencias.
Ischemic priapism: Can eosinophil count and platelet functions be positive predictive factors in etiopathogenesis
Authors: Sönmez Mehmet Giray , Kara Cengiz , Karaibrahimoğlu Adnan , Sönmez Leyla Öztürk , Göğer Yunus Emre , Balasar Mehmet , Taskapu Hakkı Hakan , Pişkin Mehmet Mesut , Öztürk Ahmet , Kılınç Mehmet 
Published: July 2017

Introduction: We evaluated the relation between ischemic priapism (IP) and blood count parameters in IP patients. We especially wanted to examine the contribution of eosinophil count (EC), platelet count (PC), and mean platelet volume (MPV) values, which are suspected predictive parameters for vascular endothelium damage and venoocclusive pathogenesis and etiopathogenesis, particularly in IP.Methods: A total of 40 IP patients fulfilled the study criteria. Forty healthy volunteers in a similar age group were included as the control group. Complete blood count values were compared between the two groups. Intergroup comparisons were performed using the Mann-Whitney U test, and the chi-square test was used to assess the relationship between categorical variables in the patient groups. The area under the curve was calculated by receiver operating characteristic (ROC) regression analyses. Epidemiological diagnosis percentages were calculated by finding cutoff values.Results: The IP group’s high MPV, PC, and EC values compared to those of the control group were detected to be statistically significant (p<0.001, p=0,03, p=0.001, respectively). No statistically significant difference was observed between the two groups for other blood count parameters. Statistically significant values for IP were measured as MPV: positive predictive value: 84%; EC: positive predictive value: 71.4%; and PC: positive predictive value: 61.4%.Conclusions: High MPV, PC, and EC values are significant positive predictive factors in IP etiopathogenesis. No proof was detected for other blood count
Traveling ionospheric disturbances as huge natural lenses: Solar radio emission focusing effect
Authors: Koval Artem , Chen Yao , Stanislavsky Aleksander , Zhang Qing‐He 
Published: July 2017

AbstractWe present an in‐depth study into spectral perturbations appearing in solar dynamic spectra and being manifestations of the focusing effect of low‐frequency solar emission by the Earth's ionosphere. Such perturbations are considered to be the result of radio waves focusing by medium scale traveling ionospheric disturbances (MSTIDs). Using the Nançay Decametric Array (NDA) data set, we have conducted a statistical analysis of the spectral structures in solar dynamic spectra within 10–80 MHz. We have detected the spectral structures in the NDA spectral data for 129 observation days from 1999 to 2015. On spectrograms they appear as intensity variations different from well‐known solar radio bursts. The sharp edges with enhanced intensity are distinctive characteristics of the structures for most events. Due to this spectral feature, they are termed as Spectral Caustics (SCs). We have classified the SCs observed by the NDA as several types, based on their spectral morphology, namely: inverted V like, V like, X like, fiber like, and fringe like. We have found that the rate of occurrence of SCs in dynamic spectra depends on the phase of the solar cycle. About 81% of all days with detected SCs fall on active phases of solar cycles 23 and 24 (48% and 33%, respectively). We have also established the seasonal dependence in occurrence of the SCs. It was found that about 95% of days with SCs belong to autumn‐winter months, whereas only near 5% of days with SCs belong to spring‐summer months. This is well correlated with the reported dependence in MSTID occurrence rate.
Magnetic signatures of plasma interaction and induction at Callisto: The Galileo C21, C22, C23, and C30 flybys
Authors: Liuzzo Lucas , Simon Sven , Feyerabend Moritz , Motschmann Uwe 
Published: July 2017

AbstractWe apply a combination of analytical modeling, hybrid simulations, and data analysis techniques to provide a comprehensive study of magnetometer data from four Galileo flybys of Callisto (C21, C22, C23, and C30) that have never been discussed in the literature before. Callisto's distance to the center of Jupiter's magnetospheric current sheet varied considerably from flyby to flyby. Therefore, the relative strength of the magnetic field perturbations due to Callisto's plasma interaction with Jupiter's magnetosphere and induction within Callisto's subsurface ocean drastically changed as well. During C21, a strong magnetic field perturbation along the corotation direction was detected in Callisto's geometric plasma shadow. This enhancement can be explained with Callisto's steady state plasma interaction only, if the upstream flow possessed a nonnegligible component away from Jupiter. During C22, Galileo only grazed Callisto's Alfvén wings which were elevated out of the flyby plane due to the ambient magnetospheric field orientation. During C23, the combination of an inclined flyby trajectory and finite gyroradius effects caused Callisto's observed Alfvén wings to be slightly asymmetric between both hemispheres. During C30, a discontinuity with a surface normal pointed toward Jupiter was detected within Callisto's geometric plasma shadow, similar to the earlier C10 flyby. Due to strong plasma interaction and an unfavorable flyby geometry (C21), a large closest approach altitude (C22), or weak inducing field (C23 and C30), no discernible induction signatures were observed during these four flybys. Based on data from all available Galileo flybys, we determine requirements on future flyby geometries that must be satisfied for an identification of Callisto's subsurface ocean in magnetometer data.
Global Mars‐solar wind coupling and ion escape
Authors: Ramstad Robin , Barabash Stas , Futaana Yoshifumi , Nilsson Hans , Holmström Mats 
Published: July 2017

AbstractLoss of the early Martian atmosphere is often thought to have occurred due to an effective transfer of the solar wind energy through the Martian induced magnetic barrier to the ionosphere. We have quantified the coupling efficiency by comparing the power of the heavy ion outflow with the available power supplied by the upstream solar wind. Constraining upstream solar wind density nsw, velocity vsw, and EUV intensity IEUV/photoionizing flux FXUV in varying intervals reveals a decrease in coupling efficiency, k, with solar wind dynamic pressure as
and with FXUV as
. Despite the decrease in coupling efficiency, higher FXUV enhances the cold ion outflow, increasing the total ion escape rate as Q(FXUV) = 1010(0.82 ± 0.05)FXUV. The discrepancy between coupling and escape suggests that ion escape from Mars is primarily production limited in the modern era, though decreased coupling may lead to an energy‐limited solar wind interaction under early Sun conditions.
The Proton Trap Technology—Toward High Potential Quinone‐Based Organic Energy Storage
Authors: Åkerlund Lisa , Emanuelsson Rikard , Renault Stéven , Huang Hao , Brandell Daniel , Strømme Maria , Sjödin Martin 
Published: July 2017

AbstractAn organic cathode material based on a copolymer of poly(3,4‐ethylenedioxythiophene) containing pyridine and hydroquinone functionalities is described as a proton trap technology. Utilizing the quinone to hydroquinone redox conversion, this technology leads to electrode materials compatible with lithium and sodium cycling chemistries. These materials have high inherent potentials that in combination with lithium give a reversible output voltage of above 3.5 V (vs Li0/+) without relying on lithiation of the material, something that is not showed for quinones previously. Key to success stems from coupling an intrapolymeric proton transfer, realized by an incorporated pyridine proton donor/acceptor functionality, with the hydroquinone redox reactions. Trapping of protons in the cathode material effectively decouples the quinone redox chemistry from the cycling chemistry of the anode, which makes the material insensitive to the nature of the electrolyte cation and hence compatible with several anode materials. Furthermore, the conducting polymer backbone allows assembly without any additives for electronic conductivity. The concept is demonstrated by electrochemical characterization in several electrolytes and finally by employing the proton trap material as the cathode in lithium and sodium batteries. These findings represent a new concept for enabling high potential organic materials for the next generation of energy storage systems.
Semihydrogenation of Acetylene on Indium Oxide: Proposed Single‐Ensemble Catalysis
Authors: Albani Davide , Capdevila‐Cortada Marçal , Vilé Gianvito , Mitchell Sharon , Martin Oliver , López Núria , Pérez‐Ramírez Javier 
Published: July 2017

AbstractIndium oxide catalyzes acetylene hydrogenation with high selectivity to ethylene (>85 %); even with a large excess of the alkene. In situ characterization reveals the formation of oxygen vacancies under reaction conditions, while an in depth theoretical analysis links the surface reduction with the creation of well‐defined vacancies and surrounding In3O5 ensembles, which are considered responsible for this outstanding catalytic function. This behavior, which differs from that of other common reducible oxides, originates from the presence of four crystallographically inequivalent oxygen sites in the indium oxide surface. These resulting ensembles are 1) stable against deactivation, 2) homogeneously and densely distributed, and 3) spatially isolated and confined against transport; thereby broadening the scope of oxides in hydrogenation catalysis.
Managing a contested cultural heritage place on K’gari (Fraser Island), Queensland, Australia
Authors: WEISSE ANNA , ROSS ANNE 
Published: July 2017

ABSTRACTContestation of culturally significant places is a phenomenon that is regularly encountered in heritage management. Takky Wooroo (Indian Head), on World Heritage–inscribed K’gari (Fraser Island), is no exception. The research presented in this paper uses a multi‐vocal methodology situated within the constructivist paradigm of “Indigenous archaeologies” to evaluate contested evidence for cultural and historical significance at Takky Wooroo.Much of the contestation relates to whether or not Takky Wooroo was the site of a massacre in the nineteenth century and if so, how this impacts on the management of the place. Evidence for the massacre is investigated using oral history from Traditional Owners as well as archival sources. Perceptions of the headland held by Traditional Owners, tourists and other stakeholders are assessed as the basis for a review of management strategies for this contested place.Themes of memorialisation and association are explored and, in the absence of tangible “scientific” evidence to link Takky Wooroo with its past uses, the inclusion of intangible understandings, such as Indigenous Knowledge, are shown to be paramount in assigning significance. In particular, we argue that memorialisation, association and the archaeology of absence allow the historically documented massacre event to be linked with Takky Wooroo in a manner that is not possible through material culture assessment alone.
Undergraduate research as curriculum
Authors: Dolan Erin L. 
Published: July 2017

AbstractTo date, national interests, policies, and calls for transformation of undergraduate education have been the main drivers of research integration into the undergraduate curriculum, briefly described here. The New Horizons in Biochemistry and Molecular Biology Education conference at the Weizmann Institute of Science (Israel) this fall presents an exciting opportunity to discuss integration of undergraduate research into the curriculum and other cutting‐edge topics in biochemistry and molecular biology education from a cross‐national perspective. I look forward to exploring prospects for international collaboration on research and development of course‐based undergraduate research experiences and on STEM education in general. © 2017 by The International Union of Biochemistry and Molecular Biology, 45(4):293–298, 2017.
Management of atrial fibrillation and concomitant coronary artery disease
Authors: Martin R. I. R. , Bates M. G. D. 
Published: July 2017

AbstractAtrial fibrillation (AF) is the most common sustained cardiac arrhythmia and associated with significant morbidity and mortality. Coronary artery disease (CAD) frequently coexists with AF, and management of these associated conditions can be challenging. Bleeding risks of different combinations of evidence‐based antithrombotic regimes need to be considered and the effects of different medical therapies for AF or CAD may impact on the other condition. This article reviews the current guidance and consensus statements of the ESC on the management of AF and CAD. The principles of AF management in the context of CAD are considered including upstream therapies to prevent AF, early identification, and antithrombotic risk assessment, and symptomatic rate and rhythm control strategies. Specific scenarios and an illustrative case are discussed to highlight clinical relevance.Answer questions and earn CME: https://wileyhealthlearning.com/Activity2/5381990/Activity.aspx
Organocatalytic Asymmetric Vinylogous Michael Reactions
Authors: Yin Yanli , Jiang Zhiyong 
Published: July 2017

AbstractSince R. C. Fuson formulated the principle of vinylogy, this platform has been extensively developed through combining diverse predominant chemical transformations. Among them, asymmetric vinylogous Michael reaction has been recognized as an efficient method to build chiral 1,7‐dioxo C chains (1,9‐dioxo C chains for bisvinylogous manifold) with diverse functional groups, which provides robust approaches to access numerous chiral compounds with pharmaceutical importance. In this review, the advances in the area of organocatalytic asymmetric vinylogous Michael reactions on the period from 2014 to nowadays are discussed, including the current scope, limitations of the transformations and applications in asymmetric synthesis of complex and valuable compounds.
Effect of Reduction Treatment on CO Oxidation with CeO2 Nanorod‐Supported CuOx Catalysts
Authors: Mock Samantha A. , Zell Elizabeth T. , Hossain Shaikh T. , Wang Ruigang 
Published: July 2017

AbstractUnderstanding the correlation of thermal treatment with catalyst activity provides mechanistic information about how the catalysts can be activated or deactivated. In this paper, we report that a comparative study was conducted on CeO2 nanorod‐supported CuOx catalysts before and after reduction treatment to gain insight on the effects of the copper oxidation state and catalyst–support interfacial interactions on CO oxidation. X‐ray diffraction, Raman spectroscopy, hydrogen temperature‐programmed reduction (H2‐TPR), and transmission electron microscopy (TEM) were used in a comprehensive way to study the effects of CuOx (0≤x≤1) composition as well as their spatial distribution on CeO2 nanorods on the H2 consumption and CO oxidation of the catalysts. These techniques were then used to gain a better understanding of the correlation between the different copper species (α, β, and γ‐type CuOx) and the multiple reduction (H2 consumption) peaks, found in the H2‐TPR data during the first run and during in situ reduction and redox cycling experiments. Also concluded from this study is that an abundance of surface defects are found on CeO2 nanorods from high‐resolution TEM, which consequently may be critical to strong CuOx(0≤x≤1)–CeO2−x(0≤x≤0.5) interactions, therefore resulting in the improved low‐temperature catalytic activity.
Triphenylamine‐Functionalized Silsesquioxane‐Based Hybrid Porous Polymers: Tunable Porosity and Luminescence for Multianalyte Detection
Authors: Shen Rong , Liu Yun , Yang Wenyan , Hou Yuqi , Zhao Xiaoling , Liu Hongzhi 
Published: July 2017

AbstractA series of hybrid luminescent porous polymers (HLPPs) are synthesized through Friedel–Crafts reactions by tuning the molar ratio of triphenylamine (TPA) to octavinylsilsesquioxane (OVS). The synthesized HLPPs exhibit high Brunauer–Emmett–Teller surface areas up to 841±10 m2 g−1, high thermal stability with decomposition temperatures (Td at 5 wt %) up to 440 °C in air, and strong blue–violet luminescence at approximately 450 nm. The porosities and luminescent properties of the HLPPs, including emission wavelength, intensity, fluorescence quantum yield, and monochromaticity, can be tuned easily by modulating the molar ratio of TPA to OVS. In addition, the polymers may serve as excellent fluorescent probes for multianalyte detection, with high fluorescence quenching coefficients (KSV) of 8900 and 4400 m−1 for Fe3+ and Cu2+, respectively.
Synthesis of Amidines from Amides Using a Nickel‐Catalyzed Decarbonylative Amination through CO Extrusion Intramolecular Recombination Fragment Coupling
Authors: Liu Xiangqian , Yue Huifeng , Jia Jiaqi , Guo Lin , Rueping Magnus 
Published: July 2017

AbstractA catalytic synthesis of amidines from amides has been established for the first time. The newly developed CO extrusion recombination process takes advantage of an inexpensive nickel(II) catalyst and provides the corresponding amidines with high efficiency. The intramolecular fragment coupling shows excellent chemoselectivity, starts from readily available amides, and provides a valuable alternative amidine synthesis protocol.
Colloidal Clusters of Plasmonic Nanoparticles with Controlled Topological Parameters
Authors: Lee Seunghoon , Kang Seungwoo , Kim Jaeyoung , Wy Younghyun , Han Sang Woo 
Published: July 2017

AbstractDevising colloidal nanoparticle assemblies with finely tuned topological parameters is critical to the development of efficient and reliable plasmonic platforms that can enable promising applications, such as surface‐enhanced Raman scattering (SERS). Here, we report a facile synthesis strategy for the preparation of stable colloidal clusters of Au nanoparticles (Au NPCs) with well‐controlled structural parameters, including the average number and size of constituent nanoparticles and the size of interparticle gaps, in which the galvanic replacement of Ag nanoprisms with controlled amount of Au precursors yielded Au NPCs with maneuvered particle sizes, while the other structural factors were intact. The present approach could allow the precise exploration of the influence of particle size on the SERS activity of nanoparticle assemblies. Notably, the prepared Au NPCs showed different particle‐size dependency of their SERS activity along with the change in analyte concentration. Finite difference time domain simulation studies revealed that the experimental results can be correlated with the relative contributions of the magnitude of near‐field enhancement and areal density of hot spots in the Au NPCs, which are determined by the size of constituent nanoparticles. This study therefore provides key design guidelines to optimize the plasmonic function of nanostructure assemblies.
Microscopy and Image Analysis
Authors: McNamara George , Difilippantonio Michael , Ried Thomas , Bieber Frederick R. 
Published: July 2017

AbstractThis unit provides an overview of light microscopy, including objectives, light sources, filters, film, and color photography for fluorescence microscopy and fluorescence in situ hybridization (FISH). We believe there are excellent opportunities for cytogeneticists, pathologists, and other biomedical readers, to take advantage of specimen optical clearing techniques and expansion microscopy—we briefly point to these new opportunities. © 2017 by John Wiley & Sons, Inc.