980 resultados para Justino, Santo, 100?-165?


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Introducción: Según OMS en 2011, 536.000 mujeres murieron en el mundo por causas relacionadas al embarazo y el parto; obteniendo Colombia índices altos de mortalidad materna (Fondo de Población de las Naciones Unidas, 2010); mientras Casanare reportó cuatro casos en 2009, y Yopal en 2010 alcanzó una tasa de 66,5 por 100.000 NV (Plan de desarrollo municipio de Yopal); por tanto se busca identificar factores que afectan la adherencia al control prenatal. Metodología: Estudio observacional de prevalencia analítica realizado con datos de gestantes de Yopal (Casanare) canalizadas por Intervenciones Colectivas 2011, con una muestra de 621 gestantes en las semanas de gestación 8,12,16,20,24,28,32,36,38 y 40.. Resultados: La adherencia al control prenatal fue del 15% y los factores que mostraron asociación estadísticamente significativa con adherencia al control prenatal fueron: régimen de salud (P=0.010); semana de gestación (p=0.000); trimestre del embarazo, antecedentes de abortos, apoyo económico (OR=1.738; IC=95%; 1.026-2.945); embarazo planeado, soporte familiar, satisfacción de compartir tiempo y espacio con el cónyuge (p=0.009, 0.001, 0.006); convivencia con familia materna (P=0.032), razón de verosimilitud 0.046, y valor OR=0.444; IC=95%; 0.208 – 0.948; y se identificaron barreras como inoportunidad de citas e insatisfacción por los servicios, donde el 98,9% de gestantes que no las encontraron tuvieron adherencia al control prenatal. Conclusión: Es necesario fortalecer programas de promoción de salud materna, control prenatal, prevención del embarazo adolescente y derechos de la mujer; reforzando acciones de vigilancia para disminuir las barreras de aseguramiento y calidad de los servicios.

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Analizar la supervisión docente de los colegios privados de la República Dominicana. Confeccionar una propuesta para que la tarea de la supervisión sea realizada lo mejor posible. Quince centros, de un total de 135 centros de Santo Domingo; participan de cada centro un supervisor y tres miembros del profesorado. Variables del supervisor: 1.- Capacidad para la visión de conjunto. 2.- Comprensión: entender fácilmente a las personas con las que trabaja. 3.- Imparcialidad en el análisis de situaciones. 4.- Experiencia: conocer los grados y niveles con los que va a trabajar, poseer experiencia como maestro y como administrador. 5.- Capacidad para mejorar los aspectos técnicos de su profesión. 6.- Inteligencia. Encuestas: una encuesta para los supervisores y 3 encuestas dirigidas a los maestros. Entrevistas con los supervisores y maestros. Análisis estadístico. La investigación se inicia con una revisión bibliográfica sobre la supervisión, recogiendo las principales aportaciones y las teorías más actuales. Se ha centrado el trabajo en el estudio de la supervisión de colegios privados del distrito escolar 15-03 de Costa Rica, analizando la forma en que se desarrolla la función supervisora en los centros. Del análisis de los resultados de la investigación se deduce que en general el proceso de supervisión se realiza de forma adecuada, siguiendo las líneas directrices teóricas, aunque se hace necesario la incorporación de modificaciones para optimizar los procesos. En relación al personal que realiza la supervisión se observa en general una buena preparación y grandes capacidades para ejercer dicha función, aunque se considera que sería conveniente unificar la formación de los supervisores, al encontrar notables diferencias en su formación. Existen problemas para realizar una supervisión más personalizada por carecer de tiempo material los responsables de su implementación, agravándose dicha situación cuando es realizada por los directores de los centros, en aquellos casos que no es posible delegar dicha función. El profesorado, en general, no se siente cómodo con la supervisión o al menos parece ser conveniente efectuar cambios en el enfoque que se da a la supervisión en tanto inspección de la tarea realizada y no como medida de evaluación para la mejora de la calidad de los procesos educativos. Es necesario planificar las tareas de supervisión en los centros, formando parte de los procedimientos educativos que se desarrollan en los centros, reduciendo el temor a la realización de supervisiones de aula. El compartir las notas de campo del supervisor con el profesorado, constituye un aspecto importante que servirá para mejorar los procesos y procedimientos del profesorado en su tarea diaria, orientando y apoyando al docente, para lograr que su tarea sea más efectiva. Todos los maestros han de ser tratados iguales, fomentando la integración de nuevos miembros en el equipo docente, dentro de un clima de respeto e imparcialidad. Ofertar apoyos personales y psicológicos a los docentes atendiendo a las demandas parece ser un factor importante para la mejora de la educación de los centros. Los supervisores se muestran interesados fundamentalmente en la mejora de los procesos educativos, en la mejora de la calidad de la educación, asumiendo más una función de asesoría que punitiva, para el beneficio de los procesos educativos del centro.

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Acompañan al artículo varias fotos ilustrativas de las autoridades en los actos conmemorativos, de las exhibiciones de gimnasia y de la actuación del coro del Instituto

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Erythroxylaceae have tropical and subtropical distribution with four genera and about 250 species. Erythroxylum is the biggest genus of the family with approximately 100 species cited for Brazil. Erythroxylum subsessile (Mart.) O.E. Schulz is a species cited just for Rio de Janeiro state and now first recorded for the state of Espírito Santo, increasing its area of distribution. © 2012 Check List and Authors.

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Prevalence of Toxoplasma gondii infection in 510 free-range (FR) chickens (380 from 33 small farms, and 130 from a slaughter house for FR chickens) from Espirito Santo state, southeastern Brazil, was investigated. Antibodies to T. gondii were sought using commercial indirect haemagglutination (IHAT, Imuno-HAI Toxo (R), Wama Diagnostica, Sao Paulo, Brazil, cut-off 1:16) and the modified agglutination test (MAT, cut-off 1:25) tests. Attempts were made to isolate viable T. gondii from seropositive chickens by bioassay in mice. Pooled samples of brain, heart and quadriceps muscle of one thigh (total 40 g) from 64 chickens with IHAT titers of >= 1:16 were minced, digested in pepsin and bioassayed in mice. Antibodies to T. gondii were found in 40.4% (206/510) FR chickens by IHAT (titer >= 1:16) and 38.8% (198/510) by MAT (titer >= 1:25); concordance between IHAT and MAT was 81.6% (kappa index = 0.614). Viable T. gondii was isolated (designated TgCkBr234-281) from 48 of 64(75%) seropositive (IHAT titers >= 1:32) FR chickens. Most isolates of T. gondii were virulent for mice; 100% of mice inoculated with 44 of 48 isolates died of toxoplasmosis within 30 days post inoculation (p.i). An epidemiological investigation revealed that people living in rural areas have little knowledge about the parasite and about the risk of acquiring it from raw meat. Results indicated that the locally available IHAT was useful for screening of chicken sera for T. gondii antibodies. (C) 2012 Elsevier B.V. All rights reserved.

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The objective of this retrospective study was to assess image quality with pulmonary CT angiography (CTA) using 80 kVp and to find anthropomorphic parameters other than body weight (BW) to serve as selection criteria for low-dose CTA. Attenuation in the pulmonary arteries, anteroposterior and lateral diameters, cross-sectional area and soft-tissue thickness of the chest were measured in 100 consecutive patients weighing less than 100 kg with 80 kVp pulmonary CTA. Body surface area (BSA) and contrast-to-noise ratios (CNR) were calculated. Three radiologists analyzed arterial enhancement, noise, and image quality. Image parameters between patients grouped by BW (group 1: 0-50 kg; groups 2-6: 51-100 kg, decadally increasing) were compared. CNR was higher in patients weighing less than 60 kg than in the BW groups 71-99 kg (P between 0.025 and <0.001). Subjective ranking of enhancement (P = 0.165-0.605), noise (P = 0.063), and image quality (P = 0.079) did not differ significantly across all patient groups. CNR correlated moderately strongly with weight (R = -0.585), BSA (R = -0.582), cross-sectional area (R = -0.544), and anteroposterior diameter of the chest (R = -0.457; P < 0.001 all parameters). We conclude that 80 kVp pulmonary CTA permits diagnostic image quality in patients weighing up to 100 kg. Body weight is a suitable criterion to select patients for low-dose pulmonary CTA.

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Drilling in the Caribbean Sea during Ocean Drilling Program Leg 165 has recovered a large number of silicic tephra layers and led to the discovery of three major episodes of explosive volcanism that occurred during the last 55 m.y. on the margins of this evolving ocean basin. The earliest episode is marked by Paleocene to early Eocene explosive volcanism on the Cayman Rise, associated with activity of the Cayman arc, an island arc that was the westward extension of the Sierra Maestra volcanic arc in southern Cuba. Caribbean sediments also document a major mid- to late Eocene explosive volcanic episode that is attributed to ignimbrite-forming eruptions on the Chortis Block in Central America to the west. This event is contemporaneous with the first phase of activity of the Sierra Madre volcanic episode in Mexico, the largest ignimbrite province on Earth. In the Caribbean sediments, a Miocene episode of explosive volcanism is comparable to the Eocene event, and also attributed to sources in the Central American arc to the west. Radiometric 40Ar/39Ar dates have been obtained for biotites and sanidines from 27 tephra layers, providing absolute ages for the volcanic episodes and further constraining the geochronology of Caribbean sediments. Volcanic activity of the Cayman arc is attributed to the northward subduction of the leading edge of the oceanic plate that carried the Caribbean oceanic plateau. Although the factors generating the large episodes of Central American explosive volcanism are unclear, we propose that they are related to contemporary major readjustments of plate tectonic configuration in the Pacific.

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Faunal analyses of planktonic foraminifera and upper-water temperature reconstructions with the modern analog technique are studied and compared to themagnetic susceptibility and gamma ray logs of ODP Core 999A (western Caribbean) for the past 560 kyr in order to explore changes in paleoceanographic conditions in the western Caribbean Sea. Long-term trends in the percentage abundance of planktonic foraminifera inODP Core 999Asuggest two hydrographic scenarios: before and after 480 ka.High percentage abundances of Neogloboquadrina pachyderma and Globorotalia inflata, low abundances of Globorotalia menardii and Globorotalia truncatulinoides, low diversity, and sea-surface temperatures (SST) under 24 °C are typical characteristics occurring from 480 to 560 ka. These characteristics suggest a "shallow" well-oxygenated upper thermocline and the influx of nutrients by either seasonal upwelling plumes and/or eddy-mediated entrainment. The second scenario occurred after 480 ka, and it is characterized by high and fluctuating percentage abundances of Neogloboquadrina dutertrei, G. truncatulinoides, G. menardii, Globigerinita glutinata, Globigerinella siphonifera, and Globigerinoides ruber; a declining trend in diversity; and large SSTs. These characteristics suggest a steady change from conditions characterized by a "shallow" thermocline and chlorophyll maximum to conditions characterized by a "deep" thermocline (mainly during glacial stages) and by more oligotrophic conditions. The influence of the subtropical North Atlantic on the upper thermocline was apparently larger during glacial stages, thus favoring a deepening of the thermocline, an increase in sea-surface salinity, and a dramatic reduction of nutrients in the Guajira upwelling system. During interglacial stages, the influx of nutrients from the Magdalena River is stronger, thus resulting in a deep chlorophyll maximumand a fresher upper ocean. The eddy entrainment of nutrients is the probable mechanism responsible of transport from the Guajira upwelling and Magdalena River plumes into ODP 999A site.

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Ocean Drilling Program (ODP) Leg 164 recovered a number of large solid gas hydrate from Sites 994, 996, and 997 on the Blake Ridge. Sites 994 and 997 samples, either nodular or thick massive pieces, were subjected to laboratory analysis and measurements to determine the structure, molecular and isotopic composition, thermal conductivity, and equilibrium dissociation conditions. X-ray computed tomography (CT) imagery, X-ray diffraction, nuclear magnetic resonance (NMR), and Raman spectroscopy have revealed that the gas hydrates recovered from the Blake Ridge are nearly 100% methane gas hydrate of Structure I, cubic with a lattice constant of a = 11.95 ± 0.05 angström, and a molar ratio of water to gas (hydration number) of 6.2. The d18O of water is 2.67 per mil to 3.51 per mil SMOW, which is 3.5-4.0 heavier than the ambient interstitial waters. The d13C and dD of methane are -66 per mil to -70 per mil and -201 per mil to -206 per mil, respectively, suggesting that the methane was generated through bacterial CO2 reduction. Thermal conductivity values of the Blake Ridge hydrates range from 0.3 to 0.5 W/(m K). Equilibrium dissociation experiments indicate that the three-phase equilibrium for the specimen is 3.27 MPa at 274.7 K. This is almost identical to that of synthetic pure methane hydrate in freshwater.