bluuebunny/crossref_metadata_2025_split huggingface dataset:
Correlation between cultivation methods and quality in some vegetable species
Authors: Mária Takácsné Hájos  
Published: May 2019

Quality parameters of 5 table root varieties were tested on 3 sowing dates with different cultivation methods: open field on 15 April and 9 July 2010 and under plastic tents on 19 August. The highest red pigment content (betanin) was measured in the varieties Akela and Mona Lisa (~ 80 mg 100 g-1) of the second (July) crop. This crop is in general use in Hungary. In comparison, in the late sown varieties (August, under plastics) a further pigment increase (10–20 mg 100 g-1) was observed in the same varieties as related to the earlier sowing dates. Yellow pigments (vulgaxanthins) showed similar trends. Roots of the late sowing date (with harvest in December) contained the highest vulgaxanthin values (103.3–124.18 mg kg-1).Varieties reacted differently to temperature changes during the production period and thus to sugar accumulation. In the second crop (July) higher water soluble solids content was measured on the average of varieties (10.12%) in comparison to the April sowing (7.76%). Beetroots of the spring sowing are recommended for fresh market while the second (July) crop with autumn harvest can satisfy industry requirements. Late sowing under unheated plastic tents supply us with fresh beetroot in late autumn and early winter and prolong the usability of plastic tents. Six lettuce species/subspecies were tested in the open field and under plastic tents in 3 repetitions for nitrate nitrogen, vitamin-C, polyphenol (gallus acid equivalent – mg GAE 100 g-1) and mineral element (Ca, K, Mg, Na) contents. Our measurements showed lower nitrate nitrogen values under plastic than in the open field (89.10± 8.13 and 127.06±14.29 mg kg-1) on the average of genotypes. Lettuce grown in the field had higher vitamin-C content (1.4 mg%) which is nearly 50% more than in plants under plastic. The highest polyphenol content was found in samples from the field with a conspicuous value of 804.17±56.47 mg GAE 100 g-1 in Piros cikória. Samples grown under plastic were richer in mineral elements (Ca, K, Mg, Na) which can be explained by the higher nutrient content of the soil. In this environment superior Mg content was observed in Edivia (4616.33±311.21 mg kg-1).
Besides the well- known headed lettuce, Piros cikória (Red chicory),the red leaved Lollo Rossa and Tölgylevel (Oak leaf lettuce) should bementioned which well deserve further testing in order to supply us with nourishing, healthy food.
Dinámica del sistema de partidos de la Provincia de Entre Ríos. Un análisis a través de la actividad legislativa (1999-2015)
Authors: Fernández Elías 
Published: May 2019

En este trabajo se analiza el sistema de partidos de la provincia de Entre Ríos durante el período 1999-2015. El objetivo principal es examinar la actividad legislativa de los partidos políticos entrerrianos en función de los cambios producidos en la arena electoral. Para desarrollar el análisis, se observan los proyectos de ley presentados por los representantes del Poder Ejecutivo y la Asamblea Legislativa. La hipótesis del estudio es que una mayor competitividad electoral favorece la producción legislativa del conjunto de los actores partidarios que se desenvuelven en la legislatura provincial. Cuando los resultados de las elecciones son equilibrados, los distintos partidos que acceden a la representación política manifiestan una tendencia hacia la cooperación y, en función de esto, se coordinan para aprobar diversos proyectos de ley. En cambio, cuando se amplía el porcentaje obtenido por el partido ganador y los partidos opositores, el sistema se torna menos cooperativo, afectando la función representativa de la oposición política.
[Reseña] Etimologías pedagógicas
Authors: Martínez-Otero Pérez Valentín 
Published: May 2019

J. Á. López Herrerías (2013): Etimologías pedagógicas, Madrid, CCS, 203 páginas.
Etimologías pedagógicas es un libro destinado a los estudiantes y profesionales de la educación, en su sentido extenso, pero también a cualquier persona culta que quiera ampliar sus conocimientos. Un libro para conocer el origen, a menudo desconocido, de palabras de alcance educativo...
E-emprendimiento en la Educación Superior: la competencia digital
Authors: Torres-Coronas Teresa , Arántzazu Vidal-Blasco María , Arias-Oliva Mario 
Published: May 2019

Entender las razones por las que la crisis ha tenido efectos dispares según el mercado laboral de referencia es crucial para diseñar políticas públicas que apoyen la creación de empleo y aceleren la recuperación. Gobierno, instituciones de educación superior, empresas y agentes sociales coinciden en que es urgente tratar de aumentar la eficiencia del sistema educativo para fomentar el emprendimiento, ya que las oportunidades que éste ofrece pueden colaborar a la recuperación y desarrollo económico.
En los últimos años, gracias a los avances de las TIC, ha surgido un nuevo modelo de negocio, el e-emprendimiento derivado de las sinergias entre TIC y una generación digital.
Este trabajo está centrado en las competencias digitales y emprendedoras de los alumnos de la Universidad Rovira i Virgili. Se trata de un estudio exploratorio para analizar si realmente podemos aprovechar las ventajas de las TIC para dar impulso a la creación de empresas y al desarrollo económico. El artículo discute las relaciones entre competencias digitales, empleabilidad y e-emprendimiento.
Los resultados obtenidos muestran que los estudiantes universitarios pueden ser considerados como profesionales digitalmente competentes, pero también cabe destacar que dichos estudiantes tienen un bajo nivel de autoeficacia emprendedora. En consecuencia, entendemos que es necesario que el sistema educativo español siga trabajando para que los estudiantes consideren que el (e)-emprendimiento y el autoempleo son una opción más para su desarrollo profesional, lo que en definitiva acabará posibilitando su inserción laboral.
Reflexão a respeito da própria prática avaliativa: um estudo com a prova em fases
Authors: Trevisan André Luis , Corio de Buriasco Regina Luiza 
Published: May 2019

Este artigo retrata o processo de compreensão de uma experiência avaliativa própria como prática de investigação. Toma como questão de pesquisa a investigação do modo como a utilização de um instrumento diferenciado de avaliação em aulas de Matemática (denominado prova em fases) possibilitou um repensar da própria prática avaliativa. Constituíram-se como procedimentos metodológicos da pesquisa a descrição detalhada das motivações, da constituição do problema de pesquisa e do contexto e dos participantes da pesquisa, elementos esses que possibilitaram uma análise sistemática empreendida sobre a própria prática. Ao retratar a adoção de uma atividade crítica perante as próprias ações enquanto professor-avaliador, o estudo aponta mecanismos de desenvolvimento de habilidades necessárias à formação de sujeitos avaliadores, por meio da reflexão na, sobre a e sobre a reflexão na ação avaliativa.
Investigation of a Vorticity-preserving Scheme for the Euler Equations
Authors: Seligman Darryl , Shariff Karim 
Published: May 2019

Abstract
We investigate the vorticity-preserving properties of the compressible, second-order residual-based scheme, “RBV2.” The scheme has been extensively tested on hydrodynamical problems, and has been shown to exhibit remarkably accurate results on the propagation of inviscid compressible vortices, airfoil-vortex interactions on a curvilinear mesh, vortex mergers in an astrophysical accretion disk, and the establishment of a two-dimensional inverse cascade in high-resolution turbulent simulations. Here, we demonstrate that RBV2 sustains the analytic solution for a one-dimensional shear flow. We assess the fidelity by which the algorithm maintains a skewed shear flow, and present convergence tests to quantify the magnitude of the expected numerical dispersion. We propose an adjustment to the dissipation in the algorithm that retains the vorticity-preserving qualities, and accurately incorporates external body forces, and demonstrate that it indefinitely maintains a steady-state hydrostatic equilibrium between a generic acceleration and a density gradient. We present a novel numerical assessment of vorticity preservation for discrete wavenumber, vortical modes of discrete wavenumber up to the Nyquist wavenumber. We apply this assessment to RBV2 in order to quantify the extent to which the scheme preserves vorticity for the full Euler equations. We find that RBV2 perfectly preserves vorticity for modes with symmetric wavenumbers, i.e., k

x
= k

y
, and that the error increases with asymmetry. We simulate the dynamical interaction of vortices in a protoplanetary disk to demonstrate the utility of the updated scheme for rendering astrophysical flows replete with vortices and turbulence. We conclude that RBV2 is a competitive treatment for evolving vorticity-dominated astrophysical flows, with minimal dissipation.
Flatness without CMB: The Entanglement of Spatial Curvature and Dark Energy Equation of State
Authors: Xu Haoting , Huang Zhiqi , Liu Zhenjie , Miao Haitao 
Published: May 2019

Abstract
The cosmic spatial curvature parameter Ω
k
is constrained, primarily by cosmic microwave background data, to be very small. Observations of the cosmic distance ladder and the large-scale structure can provide independent checks of the cosmic flatness. Such late-universe constraints on Ω
k
, however, are sensitive to the assumptions of the nature of dark energy. For minimally coupled scalar-field models of dark energy, the equation of state w has nontrivial dependence on the cosmic spatial curvature Ω
k
. Such dependence has not been taken into account in previous studies of future observational projects. In this paper we use the w parameterization proposed by Miao & Huang, where the dependence of w on Ω
k
is encoded, and perform a Fisher forecast on mock data of three benchmark projects: a Wide Field InfraRed Survey Telescope–like SNe Ia survey, a Euclid-like spectroscopic redshift survey, and a Large Synoptic Survey Telescope–like photometric redshift survey. We find that the correlation between Ω
k
and w is primarily determined by the data rather than by the theoretical prior. We thus validate the standard approaches of treating Ω
k
and w as independent quantities.
A Hard Look at NGC 5347: Revealing a Nearby Compton-thick AGN
Authors: Kammoun E. S. , Miller J. M. , Zoghbi A. , Oh K. , Koss M. , Mushotzky R. F. , Brenneman L. W. , Brandt W. N. , Proga D. , Lohfink A. M. , Kaastra J. S. , Barret D. , Behar E. , Stern D. 
Published: May 2019

Abstract
Current measurements show that the observed fraction of Compton-thick (CT) active galactic nuclei (AGN) is smaller than the expected values needed to explain the cosmic X-ray background. Prior fits to the X-ray spectrum of the nearby Seyfert-2 galaxy NGC 5347 (z = 0.00792, D = 35.5 Mpc ) have alternately suggested a CT and Compton-thin source. Combining archival data from Suzaku, Chandra, and—most importantly—new data from NuSTAR, and using three distinct families of models, we show that NGC 5347 is an obscured CTAGN (N
H > 2.23 × 1024 cm−2). Its 2–30 keV spectrum is dominated by reprocessed emission from distant material, characterized by a strong Fe Kα line and a Compton hump. We found a large equivalent width of the Fe Kα line (EW = 2.3 ± 0.3 keV) and a high intrinsic-to-observed flux ratio (∼100). All of these observations are typical for bona fide CTAGN. We estimate a bolometric luminosity of L
bol ≃ 0.014 ± 0.005 L
Edd.. The Chandra image of NGC 5347 reveals the presence of extended emission dominating the soft X-ray spectrum (E < 2 keV), which coincides with the [O iii] emission detected in Hubble Space Telescope images. Comparison to other CTAGN suggests that NGC 5347 is broadly consistent with the average properties of this source class. We simulated XRISM and Athena/X-IFU spectra of the source, showing the potential of these future missions in identifying CTAGN in the soft X-rays.
Molybdenum Isotopes in Presolar Silicon Carbide Grains: Details of s-process Nucleosynthesis in Parent Stars and Implications for r- and p-processes
Authors: Stephan Thomas , Trappitsch Reto , Hoppe Peter , Davis Andrew M. , Pellin Michael J. , Pardo Olivia S. 
Published: May 2019

Abstract
We have analyzed molybdenum isotopes, together with strontium and barium isotopes, in 18 presolar silicon carbide grains using the Chicago Instrument for Laser Ionization (CHILI), a resonance ionization mass spectrometer. All observed isotope ratios can be explained by mixtures of pure s-process matter with isotopically solar material. Grain residues were subsequently analyzed for carbon, nitrogen, silicon, and sulfur isotopes, as well as a subset for 26Al–26Mg systematics using the NanoSIMS. These analyses showed that all but one grain are mainstream grains, most probably coming from low-mass asymptotic giant branch (AGB) stars. One grain is of the AB type, for which the origin is still a matter of debate. The high precision of molybdenum isotope measurements with CHILI provides the best estimate to date for s-process molybdenum made in low-mass AGB stars. The average molybdenum isotopic abundances produced by the s-process found in the analyzed mainstream SiC grains are 0% 92Mo, 0.73% 94Mo, 13.30% 95Mo, 36.34% 96Mo, 9.78% 97Mo, 39.42% 98Mo, and 0.43% 100Mo. Solar molybdenum can be explained as a combination of 45.9% s-process, 30.6% r-process, and 23.5% p-process contributions. Furthermore, the observed variability in the individual grain data provides insights into the variability of conditions (neutron density, temperature, and timescale) during s-process nucleosynthesis in the grains’ parent stars, as they have subtle effects on specific molybdenum isotope ratios. Finally, the results suggest that the ratio between p- and r-process molybdenum in presolar SiC from many different types of parent stars is Mo
p
/Mo
r
= 0.767, the value inferred for the solar system and consistent with what has been found in bulk samples and leachates of primitive meteorites.
Multipulse Fermi Gamma-Ray Bursts. I. Evidence of the Transition from Fireball to Poynting-flux-dominated Outflow
Authors: Li Liang 
Published: May 2019

Abstract
The composition of a jet is still an unsolved problem in gamma-ray bursts (GRBs). Several previous studies have suggested that the prompt emission spectrum of GRBs is likely to consist of a few components that may arise from different jet compositions. Here we present a systematic analysis to search for the GRBs that seem to show the transition from a fireball to the Poynting-flux-dominated outflow between well-separated pulses within a single burst, like GRB 160626B, using the Gamma-ray Burst Monitor data of the Fermi satellite. We obtain 43 GRBs with clear multiple pulses and find that 9/43 (21%) bursts may exhibit such a transition based on the time-integrated spectral analysis. We then select a further four bursts with data of adequate quality to perform a detailed time-resolved spectral analysis, and we find that in three bursts the thermal-like pulse is a precursor. Furthermore, based on the time-resolved spectra, we constrain the outflow properties for those thermal pulses and find them consistent with the typical properties of the photosphere emission. Also, the later pulses with the softer low-energy spectral index are compatible with the optically thin synchrotron emission model. Our analysis indicates that a good fraction of the multipulse Fermi bursts may obtain the transition from fireball to the Poynting-flux-dominated outflow.
Systemic Inflammatory Response in Predicting Prostate Cancer: The Diagnostic Value of Neutrophil-To-Lymphocyte Ratio
Authors: Adhyatma Kharisma Prasetya , Prapiska Fauriski F. , Siregar Ginanda Putra , Warli Syah Mirsya 
Published: May 2019

BACKGROUND: Over the past decades, the study of the microenvironment of cancer has supported the hypothesis between inflammation and cancer. Previous studies have demonstrated a promising value of platelet-to-lymphocyte (PLR) and neutrophil-to-lymphocyte ratio (NLR) as a systemic inflammatory response in prostate cancer.
AIM: To evaluate their pre-biopsy values of PLR and NLR in predicting prostate cancer.
MATERIAL AND METHODS: This is a diagnostic study with retrospective design. We included all benign prostatic hyperplasia (BPH) and prostate cancer (PCa) patients who underwent prostate biopsy in Adam Malik Hospital between August 2011 and August 2015. We used PSA value above 4 ng/dL as the threshold for the biopsy candidates. The relationship between pre-biopsy variables affecting the percentage of prostate cancer risk was evaluated, including age, prostate-specific antigen (PSA) level, and estimated prostate volume (EPV). The PLR and NLR were calculated from the ratio of related platelets or absolute neutrophil counts with their absolute lymphocyte counts. The values then analysed to evaluate their associations with the diagnosis of BPH and PCa.
RESULTS: Out of 298 patients included in this study, we defined two groups consist of 126 (42.3%) BPH and 172 PCa (57.7%) patients. Mean age for both groups are 66.36 ± 7.53 and 67.99 ± 7.48 years old (p = 0.64), respectively. There are statistically significant differences noted from both BPH and PCa groups in terms of PSA (19.28 ± 27.11 ng/dL vs 40.19 ± 49.39 ng/dL), EPV (49.39 ± 23.51 cc vs 58.10 ± 30.54 cc), PLR (160.27 ± 98.96 vs 169.55 ± 78.07), and NLR (3.57 ± 3.23 vs 4.22 ± 2.59) features of both BPH and PCa groups respectively (p < 0.05). A Receiver Operating Characteristics (ROC) analysis was performed for PLR and NLR in analysing their value in predicting prostate cancer. The Area Under the Curve (AUC) of PLR is 57.9% with a sensitivity of 56.4% and specificity of 55.6% in the cut-off point of 143 (p = 0.02). The NLR cut-off point of 3.08 gives 62.8% AUC with 64.5% sensitivity and 63.5% specificity. These AUCs were comparable with the AUC of PSA alone (68.5%). We performed logistic regression between PSA, PLR, and NLR with result in the exclusion of PLR if calculated conjunctively. Therefore, NLR has a promising performance in predicting PCa in patients with PSA above 4 ng/dL (OR = 3.2; 95% CI: 1.96-5.11). We found as many as 80 (63.5%) patients with benign biopsy results with negative NLR value in this study.
CONCLUSION: NLR has promising value in predicting prostate cancer. A further prospective study in validating its diagnostic value was needed.
Heart failure with preserved ejection fraction in elderly. From pathophysiology to treatment: an unresolved problem
Authors: Beltrami Matteo , Fumagalli Carlo 
Published: May 2019

Heart failure with preserved ejection fraction (HFpEF) has a significant impact on healthcare resources and while its occurrence in the elderly is increasing, its prognosis has not improved. Despite the prevalence of HFpEF, the understanding of its pathophysiology is still incomplete, and optimal treatment remains largely undefined. The net clinical benefit of medical treatment with ACE inhibitors, ARBs, MRAs and beta-blockers has led to the incorporation of these drugs into HF clinical practice guidelines. However, little or no progress has been done for patients with HFpEF and there are no convincing and validated therapies able to reduce mortality or morbidity. HFpEF is a heterogeneous clinical syndrome embracing varieties of phenotypes and could benefit from a phenotype-specific approach. In the era of precision medicine, targeted approaches have proved effective in various disciplinary medical settings and for this reason this modern approach should be encouraged also in cardiology. In elderly patients, multi-level strategies and interventions aimed at improving adherence to guidelines and tailoring therapy, could be the key to improving outcome, and to reducing costs related to HF-related re-admissions. In the present review we briefly discuss current information available regarding pathophysiology, outcome, treatment and safety of the most common drugs used in this “geriatric syndrome”.
Outcomes in Multidisciplinary Team-based Approach in Geriatric Hip Fracture Care: A Systematic Review
Authors: Patel Jay N. , Klein David S. , Sreekumar Swathy , Liporace Frank A. , Yoon Richard S. 
Published: May 2019

Introduction:
This systematic review analyzes the literature on the treatment of geriatric hip fractures by a multidisciplinary hip fracture service including geriatricians/internists and orthopaedic surgeons and what impact this has on patient outcomes.

Methods:
A systematic review of several databases was conducted according to PRISMA guidelines. Studies comparing an orthopaedic-led care model versus a coordinated orthogeriatrics care model or a geriatrics-led care model to treat hip fractures with reported outcomes for time to surgery, length of stay, readmission rates, and postoperative mortality were included.

Results:
Seventeen articles fitting the inclusion criteria were included. Differences between the results of an orthopaedic-led care model versus a coordinated orthogeriatrics care model or a geriatrics-led care model were assessed using chi-squared tests. With patients admitted under a coordinated orthogeriatrics care model or a geriatrics-led care model, there is a statistically significant decrease in time to surgery (P = 0.045), length of stay (P = 0.0036), and postoperative mortality rates (P = 0.0034).

Conclusions:
Although a heterogeneous group of studies, the aggregate data from several studies using an orthogeriatrics care model or a geriatrics-led care model trend toward improvements across several clinical and cost-related outcome measures: decreased time to surgery, shorter length of stay, improved postoperative clinical outcomes, decreased mortality, and lower cost.
Evaluation and Comparison of Two Commercially Available Mouthrinses in Reducing Aerolised Bacteria During Ultrasonic Scaling When Used as a Preprocedural Rinse.
Authors: AMMU Asmita , VARMA Siddhartha , SURAGİMATH Girish , ZOPE Sameer , PİSAL Apurva , GANGAVATİ Rashmi 
Published: May 2019

Objective:To compare and evaluate the effect of 0.2% chlorhexidine gluconate and commercially available herbal mouthrinse in reducing aerolized bacteria when used as a preprocedural mouth rinse.Materials and Methods:A total of 45 patients were selected and randomly divided into three groups. Group I consisted of 15 patients who rinsed with distilled water for 60 seconds. Group II consisted of 15 patients who rinsed with 0.2% chlorhexidine mouthwash (Clohex®) for 60 seconds and Group III consisted of 15 patients who rinsed with herbal mouthwash (Hiora®) for 60 seconds. Aerosols produced during the oral prophylaxis procedure were collected on blood agar plates by exposing the plates at patient’s and dentist’s chest area and the exposed plates were incubated at 37°c aerobically for 48 hours. The number of colony forming units (CFU) in aerosol and CFU in the saliva were counted and statistically analyzed. Results:Reduction in the bacterial load using 0.2% of chlorhexidine gluconate mouthwash is found to be significant at both patient’s and dentist’s chest area in aerosol produced during scaling followed by herbal mouthrinse.Conclusion:The results of the present study clearly indicate that pre-procedural rinsing with 0.2% chlorhexidine gluconate was significantly more effective than herbal mouthrinse in reducing the aerolized bacteria during ultrasonic scaling. Therefore a pre-procedural rinse can significantly reduce the risk for cross contamination.