bluuebunny/crossref_metadata_2025_split huggingface dataset:
Risk Analysis of Tobacco Farming At South OKU Regency South Sumatera Province
Authors: Sari Fifian Permata , Munajat Munajat 
Published: August 2019

This study aimed to analyse the risk of tobacco farming at South OKU, South Sumatera Province. The location is determined by purposive on South OKU Regency caused it was the centre placed of tobacco farming of South Sumatera Province.. The method of this research is survey method, and simple random sampling as the sample method, with taken 25 farmers as the samples of 63 tobacco farmers in South OKU Regency. The result showed that tobacco farming in South OKU Regency, resulted in average income of Rp. 54.367.880. from these calculations it can be seen that the amount of standard deviation of Rp.15.718.548,16657. The coefficient of variation obtained is 0.2891146053 which means the CV is less than 0.5 (0.28 and L more than (22.930.783.666859 ≥ 0). This indicated that tobacco farming in South OKU Regency is protected from loss.
Keywords : Risk analysis, tobacco farming, protected from loss.
Análise da Evolução Temporal do Datum Vertical Brasileiro de Imbituba
Authors: Da Silva Luciana Maria , Correia de Freitas Sílvio Rogério 
Published: August 2019

Actualmente, los temas más centrales de Geodesia se vinculan a la provisión de un Sistema de Referencia Global único, al que puedan vincularse de forma unívoca y con exactitud los cambios globales de carácter geométrico y físico. El Global Geodetic Reference Frame tiene como objetivo la mejor estructuración de los Sistemas de Observación de la Tierra actualmente con perspectivas de la determinación de los cambios globales al nivel de una parte por mil millones, considerando varios parámetros geométricos y físicos. En este contexto, se pretende que el International Height Reference Frame, realizado por International Height Reference System, posea consistencia global de, por lo menos, un centímetro en su realización y control espacio/temporal en el orden del milímetro por año. Considerando estos aspectos, análisis y evolución temporal del Datum Vertical Brasileño de Imbituba utilizando datos mareográficos del nivel del mar de: Permanent Service for Mean Sea Level (1948 a 1968), University of Hawaii Sea Level Center (2001 a 2007) y Red Mareográfica Permanente para Geodésia (2006 a 2016), y datos de distintas misiones altimétricas del período 1991 a 2015 obtenidos del Banco de Datos del Deutsches Geodätisches Forschungsinstitut. Así como, datos de posicionamiento continuo GNSS del período de 2007 a 2016, de la Red Brasileña de Monitoreo Continuo, los cuales fueron utilizados para modelado de los movimientos locales de la corteza. Los resultados permitirán discriminar los movimientos de la corteza en relación al nivel del mar. Para esto, se utilizó la tendencia de variación del nivel del mar evidenciado por el mareógrafo, así como la variación del componente vertical obtenido con el procesamiento GNSS y de la Sea Surface Height obtenida de los datos de los satélites altimétricos.
PSYCHOLOGICAL BENEFITS OF EXERCISE AND PHYSICAL ACTIVITY IN OLDER ADULTS
Authors: Dolenc Petra , Petrič Mojca 
Published: August 2019

While regular physical activity has been shown to positively impact health and physical functioning across all age groups an active lifestyle may in particular have beneficial effects in advanced age. The objective of this article is to provide a brief overview of a contemporary research on the benefits of physical activity for psychological health and quality of life in the elderly. Older adults are more vulnerable than other age groups regarding mental health problems, such as depression and anxiety. Many cross-sectional and experimental studies discussed in the article confirm the importance of a physically active lifestyle for preventing or reducing mental health problems and improving the quality of life among elderly people.
Waste cobalt-containing catalysts in the resource-saving technology of refractory cements
Authors: Gamova O. A. , Levadna S. V. , Shabanova G. N. , Korohodska A. N. , Avdeyeva O. P. , Kostyrkin O. V. 
Published: August 2019

The article presents the results of the development of aluminous and barium-containing cements with the use of worn out cobalt-containing catalyst for the hydrogenation of organic compounds of PJSC “Severodonetsk Azot Association” as similar an aluminum-containing component. The chemical and phase compositions of the test compositions are presented. The physical and mechanical properties and design melting points of cobalt-containing cements are determined. Based on the of the conducted researches it is established the possibility of obtaining refractory high-strength cements for resource-saving technology using worn out cobalt-containing catalysts of hydrogenation processes.
Influence of the method for producing radiotransparent ceramics based on the system SrO—BaO—Al2O3—SiO2 on its properties
Authors: Chefranov E. V. , Fedorenko E. Yu. , Krivobok R. V. , Lisachuk G. V. , Gusarova I. A. 
Published: August 2019

The results of the study of samples of radiotransparent ceramics based on the system SrO—BaO—Al2O3—SiO2 which have been made in one-step and two-step process have been presented. A comparative analysis of their sintering characteristics and dielectric properties have shown that materials which were obtained by a two-stage process are characterized by a relatively high degree of sintering (W = 2..72 ÷ 3.97 %, Papp = 2901 ÷ 3180 kg/m3), sufficient values of dielectric losses tangent (tgδ = 0.000258 ÷ 0.000313), however, their dielectric permittivity (ε = 12.11 ÷ 14.38) don’t reach the specified level. It was concluded that it is necessary to modify the compositions of the basic oxide system using small additives that intensify sintering and provide high-temperature stability of solid solutions of slawsonite and celsian.
Synthesis of optical Me2+,Cr4+:YAG ceramics for passive Q-switch
Authors: Chaika M. А. , Doroshenko A. G. , Parkhomenko S. V. , Chernomorets E. G. , Mateichenko P. V. , Yavetskiy R. P. 
Published: August 2019

The purpose of this work is determines of formation patterns of opti- cal ceramics Mg2+,Cr4+:YAG and Ca2+,Cr4+:YAG as model objects promising for use as a passive Q-switch. Optical ceramics Ca2+,Cr4+:YAG and Mg2+,Cr4+:YAG was synthesized by solid-phase reaction sintering in vacuum. The influence of calcium, magnesium and chromium ion concentrations on the structure and the optical properties of ceramics Mg2+,Cr4+:YAG have been investigated. The optimized chromium concentration 0.5 at. % allows to obtain Mg2+,Cr3+:YAG ceramics with optical transmission of about 81 % at λ = 1064 nm after vacuum sintering and the absorption coefficient of about 1.4 cm–1 after air annealing. The optimized calcium concentration 0.5 at. % allows to obtain Са2+,Cr3+:YAG ceramics with an optical transmission of about 80 % at λ = 1064 nm after vacuum sintering and the absorption coefficient of about 2.4 cm–1 after air annealing.
Descripción clínico-epidemiologica de los pacientes con falla cardiaca aguda que consultan al servicio de urgencias
Authors: Senior Juan Manuel , Saldarriaga Clara , Rendón Jairo Alonso 
Published: August 2019

Introducción: la falla cardiaca aguda es un motivo de consulta frecuente al servicio de urgencias, se desconoce el perfil clínico de los pacientes con falla cardiaca aguda en nuestro medio
Objetivo: describir las características epidemiológicas de los pacientes que ingresan al servicio de urgencias con diagnóstico de falla cardiaca aguda.
Metodología: estudio prospectivo, descriptivo.
Resultados: se incluyeron 106 pacientes con edad promedio de 62.4 años (16-94), el 52.8% eran hombres, las causas más frecuente de la falla cardiaca fueron: cardiopatía hipertensiva 45.2%, idiopática 31.1%, isquémica 14.1%, valvular 8.4%, viral y periparto 0.9%; 11.2% tenían un síndrome coronario agudo. La medicación que utilizaban al momento del ingreso incluyó digoxina en 26.4%, diuréticos 73%, inhibidores de la enzima convertidora de angiotensina 73.58%, betabloqueadores 32%, espironolactona 34.9% . La clase funcional según la clasificación de Nueva York previa al ingreso fue I en 1.8%, clase II 26.4,% clase III 57.5%, clase IV 14.3%. Se presentaron con edema pulmonar 10.37% (11), el valor promedio del péptido natriurético cerebral fue 2356 pg/ml. El 67.2% tenían fracción de expulsión menor a 40%. La duración promedio de la hospitalización fue de 11.42 (1-69).
Conclusiones: en comparación con los registros internacionales nuestra población tiene una edad promedio menor y con menor frecuencia son de etiología isquémica. Respecto al tratamiento existe un uso frecuente de inhibidores de la enzima convertidora de angiotensina y una subutilización de los betabloqueadores
Concordancia entre escalas Framingham ATP III, Score y ACC/AHA 2013 en una cohorte de pacientes en un hospital de cuarto nivel en el año 2015
Authors: Mancera-Rincón Pedro , Giral-Giraldo Herman Eduardo , Rizo-Tello Víctor Zein , Barrera Garavito Edgar Camilo 
Published: August 2019

Introducción: identificar las personas sin enfermedad cardiovascular establecida con alto riesgo es el objetivo de la intervención primaria en prevención cardiovascular. En nuestro medio se han aplicado múltiples escalas de riesgo cardiovascular; sin embargo, en Colombia la única escala validada es la de Framingham.
Objetivo: estimar la concordancia entre las escalas Framingham ATP III, SCORE y ACC/ AHA 2013 para la predicción de riesgo cardiovascular en pacientes entre 40 y 75 años en una institución de cuarto nivel durante el año 2015.
Material y métodos: estudio de tipo observacional de corte transversal en pacientes de 40 - 75 años que asistieron durante el año 2015 en el servicio de chequeo general de un hospital de cuarto nivel, de 4783 individuos se tomó una muestra aleatorizada simple de 861, se calculó el riesgo cardiovascular con las escalas de Framingham, SCORE y AHA/ACC2013. Se describieron las variables cualitativas mediante distribuciones de frecuencias, las variables cuantitativas con medidas de tendencia central, se realizó un análisis bivariado con el coeficiente de correlación Kappa de Cohen considerándose como buena correlación >60.
Resultados: el cálculo del riesgo cardiovascular con cada una de las escalas encontró para alto riesgo AHA 2013 de 14.6%, Framingham 2.2% y SCORE con 1.1%. Para riesgo medio SCORE de 26.9%, AHA 2013 de 17.1% y Framingham de 14.4%, y riesgo bajo la estimación fue de Framingham de 83.3%, SCORE de 73% y AHA 2013 68.3%. El índice de concordancia de Kappa de Cohen para alto riesgo cardiovascular entre la escala Framingham modificada y SCORE se evidencia fuerza de concordancia moderada (Kappa: 0.47) al calcular este índice entre Framingham modificada y AHA 2013 la fuerza concordancia es débil (Kappa: 0.3497).
Conclusión: con los hallazgos del estudio se concluye que el comportamiento en cuanto a la estimación de riesgo de las escalas de SCORE y AHA 2013 no es concordante, por lo tanto, sus estimaciones no son intercambiables, tendiendo a sobreestimar o subestimar el riesgo
Complicaciones postoperatorias en pacientes con cirugía de válvula mitral
Authors: Monsalve Angela María , Zuluaga Gómez Mónica Fernanda , Betancur Pulgarín Carmen Luisa , Calvo Víctor Daniel 
Published: August 2019

Objetivos: determinar las condiciones preoperatorias e intraoperatorias que aumentan el riesgo de morbilidad y mortalidad en el posoperatorio inmediato en los pacientes con cambio de válvula mitral, en la Clínica MAC San Rafael en el periodo del 2014 al 2017.
Material y métodos: se realizó un estudio de casos de tipo cuantitativo, observacional descriptivo, las variables cualitativas se presentaron en frecuencias absolutas, se realizó análisis univariado de los factores predictivos de complicaciones posoperatorias utilizando el riesgo relativo e intervalo de confianza a 95%. Para las variables cuantitativas continuas y discretas se utilizaron medidas de resumen y de tendencia central, como media, mediana, desviación estándar, rango, rango intercuartil.
Resultados: en el presente estudio se reportaron 24 casos de pacientes intervenidos de cambio de válvula mitral, la edad media de los pacientes fue de 58.7 ± 15.43 años; no se hallaron diferencias estadísticamente significativas en los promedios de edad entre hombres y mujeres (p= 0.99). La hipertensión arterial es una variable estadísticamente significativa p=0.03 IC.17 (1.29-223.13), por cada paciente 50 años con la misma patología.
Conclusiones: las variables preoperatorias como antecedentes de hipertensión arterial y una clase funcional NYHA III, son comunes en las complicaciones de los pacientes intervenidos sobre la válvula mitral. Además los pacientes que presentaron tiempos de clampeo y cirugía mayor que la media para otros estudios presentaron infección de sitio operatorio y septicemia
APOGEE/Kepler Overlap Yields Orbital Solutions for a Variety of Eclipsing Binaries
Authors: Cunningham Joni Marie Clark , Rawls Meredith L. , Windemuth Diana , Ali Aleezah , Jackiewicz Jason , Agol Eric , Stassun Keivan G. 
Published: August 2019

Abstract
Spectroscopic eclipsing binaries (SEBs) are fundamental benchmarks in stellar astrophysics and today are observed in breathtaking detail by missions like the Transiting Exoplanet Survey Satellite (TESS), Kepler, and Apache Point Observatory Galactic Evolution Experiment (APOGEE). We develop a methodology for simultaneous analysis of high-precision Kepler light curves and high-resolution near-infrared spectra from APOGEE and present orbital solutions and evolutionary histories for a subset of SEBs within this overlap. Radial velocities extracted from APOGEE spectra using the broadening function (BF) technique are combined with Kepler light curves and to yield binary orbital solutions. The BF approach yields more precise radial velocities than the standard cross-correlation function, which in turn yields more precise orbital parameters and enables the identification of tertiary stars. The orbital periods of these seven SEBs range from 4 to 40 days. Four of the systems (KIC 5285607, KIC 6864859, KIC 6778289, and KIC 4285087) are well-detached binaries. The remaining three systems have apparent tertiary companions, but each exhibit two eclipses along with at least one spectroscopically varying component (KIC 6449358, KIC 6131659, and KIC 6781535). Gaia distances are available for four targets which we use to estimate temperatures of both members of these SEBs. We explore evolutionary histories in H–R diagram space and estimate ages for this subset of our sample. Finally, we consider the implications for the formation pathways of close binary systems via interactions with tertiary companions. Our methodology combined with the era of big data and observation overlap opens up the possibility of discovering and analyzing large numbers of diverse SEBs, including those with high flux ratios and those in triple systems.
Blue Lurkers: Hidden Blue Stragglers on the M67 Main Sequence Identified from Their Kepler/K2 Rotation Periods
Authors: Leiner Emily , Mathieu Robert D. , Vanderburg Andrew , Gosnell Natalie M. , Smith Jeffrey C. 
Published: August 2019

Abstract
At an age of 4 Gyr, typical solar-type stars in M67 have rotation rates of 20–30 days. Using K2 Campaign 5 and 16 light curves and the spectral archive of the WIYN Open Cluster Study, we identify 11 3D kinematic members of M67 with anomalously fast rotation periods of 2–8 days, implying ages of less than 1 Gyr. We hypothesize that these anomalously fast rotators have been spun up by mass transfer, mergers, or stellar collisions during dynamical encounters within the 1 Gyr and thus represent lower-luminosity counterparts to the blue straggler stars. These 11 candidate post-interaction stellar systems have much in common with the blue stragglers, including a high binary fraction (73%); a number of long-period, low-eccentricity binary systems; and in at least one case a UV excess consistent with the presence of a hot white dwarf companion. The identification of these 11 systems provides the first picture of the low-luminosity end of the blue straggler distribution, providing new constraints for detailed binary evolution models and cluster population studies. This result also clearly demonstrates the need to properly account for the impact of binaries on stellar evolution, as significant numbers of post-interaction binaries likely exist on cluster main sequences and in the field. These stars are not always easy to identify but make up ∼10% or more of the spectroscopic binary population among the solar-type stars in M67.
Cascading Constraints from Neutrino-emitting Blazars: The Case of TXS 0506+056
Authors: Reimer Anita , Böttcher Markus , Buson Sara 
Published: August 2019

Abstract
We present a procedure to generally constrain the environments of neutrino-producing sites in photomeson production models of jetted active galactic nuclei (AGNs) where any origin of the dominant target photon field can be accommodated. For this purpose we reconstruct the minimum target photon spectrum required to produce the (observed) neutrino spectrum, and derive the distributions of all corresponding secondary particles. These initiate electromagnetic cascades with an efficiency that is linked to the neutrino production rate. The derived photon spectra represent the minimum radiation emerging from the source that is strictly associated with the photohadronically produced neutrinos. Using the 2014/15 neutrino spectrum observed by IceCube from TXS 0506+056, we conduct a comprehensive study of these cascade spectra and compare them to the simultaneous multiwavelength emission. For this set of observations, photopion production from a cospatially produced (comoving) photon target can be ruled out as well as a setup where synchrotron- or synchrotron–Compton-supported cascades on a stationary (AGN rest frame) target photon field operate in this source. However, a scenario where Compton-driven cascades develop in the stationary soft X-ray photon target, which photohadronically produced the observed neutrinos, appears feasible with required proton kinetic jet powers near the Eddington limit. The source is then found to produce neutrinos inefficiently, and emits GeV photons significantly below the observed Fermi-Large Area Telescope flux. Hence, the neutrinos and the bulk of the gamma-rays observed in 2014/15 from TXS 0506+056 cannot have been initiated by the same process.
Evidence for Sub-Chandrasekhar Type Ia Supernovae from Stellar Abundances in Dwarf Galaxies∗
Authors: Kirby Evan N. , Xie Justin L. , Guo Rachel , de los Reyes Mithi A. C. , Bergemann Maria , Kovalev Mikhail , Shen Ken J. , Piro Anthony L. , McWilliam Andrew 
Published: August 2019

Abstract
There is no consensus on the progenitors of Type Ia supernovae (SNe Ia) despite their importance for cosmology and chemical evolution. We address this question using our previously published catalogs of Mg, Si, Ca, Cr, Fe, Co, and Ni abundances in dwarf galaxy satellites of the Milky Way (MW) to constrain the mass at which the white dwarf (WD) explodes during a typical SN Ia. We fit a simple bi-linear model to the evolution of [X/Fe] with [Fe/H], where X represents each of the elements mentioned above. We use the evolution of [Mg/Fe] coupled with theoretical supernova yields to isolate what fraction of the elements originated in SNe Ia. Then, we infer the [X/Fe] yield of SNe Ia for all of the elements except Mg. We compare these observationally inferred yields to recent theoretical predictions for two classes of Chandrasekhar-mass (M
Ch) SN Ia as well as sub-M
Ch SNe Ia. Most of the inferred SN Ia yields are consistent with all of the theoretical models, but [Ni/Fe] is consistent only with sub-M
Ch models. We conclude that the dominant type of SN Ia in ancient dwarf galaxies is the explosion of a sub-M
Ch WD. The MW and dwarf galaxies with extended star formation histories have higher [Ni/Fe] abundances, which could indicate that the dominant class of SN Ia is different for galaxies where star formation lasted for at least several Gyr.
The Molecular Outflow in NGC 253 at a Resolution of Two Parsecs
Authors: Krieger Nico , Bolatto Alberto D. , Walter Fabian , Leroy Adam K. , Zschaechner Laura K. , Meier David S. , Ott Jürgen , Weiss Axel , Mills Elisabeth A. C. , Levy Rebecca C. , Veilleux Sylvain , Gorski Mark 
Published: August 2019

Abstract
We present 0.″15 (∼2.5 pc) resolution ALMA CO(3–2) observations of the starbursting center in NGC 253. Together with archival ALMA CO(1–0) and CO(2–1) data, we decompose the emission into disk and nondisk components. We find ∼7%–16% of the CO luminosity to be associated with the nondisk component (1.2–4.2 × 107 K km s−1 pc2). The total molecular gas mass in the center of NGC 253 is ∼3.6 × 108
M
⊙ with ∼0.5 × 108
M
⊙ (∼15%) in the nondisk component. These measurements are consistent across independent mass estimates through three CO transitions. The high-resolution CO(3–2) observations allow us to identify the molecular outflow within the nondisk gas. Using a starburst conversion factor, we estimate the deprojected molecular mass outflow rate, kinetic energy, and momentum in the starburst of NGC 253. The deprojected molecular mass outflow rate is in the range of ∼14–39 M
⊙ yr−1 with an uncertainty of 0.4 dex. The large spread arises due to different interpretations of the kinematics of the observed gas while the errors are due to unknown geometry. The majority of this outflow rate is contributed by distinct outflows perpendicular to the disk, with a significant contribution by diffuse molecular gas. This results in a mass-loading factor

in the range η ∼ 8−20 for gas ejected out to ∼300 pc. We find the kinetic energy of the outflow to be ∼2.5–4.5 × 1054 erg and a typical error of ∼0.8 dex, which is ∼0.1% of the total or ∼8% of the kinetic energy supplied by the starburst. The outflow momentum is 4.8–8.7 × 108
M
⊙ km s−1 (∼0.5 dex error) or ∼2.5%–4% of the kinetic momentum released into the ISM by the feedback. The unknown outflow geometry and launching sites are the primary sources of uncertainty in this study.
Ultrasound and guided fine needle aspiration cytology in the submandibular triangle
Authors: Ahuja A. T. , Yang W. T. , King W. , Metreweli C. 
Published: August 2019

Objective: The aim of this study was to evaluate whether High Resolution Ultrasound (US) along with Fine Needle Aspiration Cytology (FNAC) can provide the surgeon with adequate preoperative information for masses in the submandibular triangle.Subjects and methods: Eighty-two consecutive patients with suspected masses of the submandibular triangle had US with guided FNAC (49 patients) and final histological correlation (47 patients).Results: Compared to final histology, US had a sensitivity of 97%, specificity 83%, positive predictive value 91% and a negative predictive value of 95% while FNAC had sensitivity of 100%, specificity 90%, positive predictive value 94% and negative predictive value of 100%.Conclusion: US combined with a FNAC is an ideal initial investigation for evaluating masses in submandibular area. It is quick, inexpensive, easily available, and provides the surgeon with relevant information preoperatively obviating the need for further expensive imaging.