Natural radioactivity of the cement, lime and plaster in the Zacatecas State

International Nuclear Information System (INIS)

Mireles, F.; Davila, J. I.; Lopez, H.; Pinedo, J. L.; Rios, C.; Saucedo, S. A.; Cespedes, N.

2012-10-01

The construction materials are the main radiation gamma source inside the houses room and the buildings, followed by the terrestrial and cosmic radiation. The radioactivity levels of the construction materials were obtained to establish reference levels and of population exposure. In this work the study of 56 samples of construction materials is presented, 24 of cement, 20 of lime and 12 of plaster, of the marks more sold in the municipalities of Zacatecas and Guadalupe of the Zacatecas State, Mexico. The objective is the study of the concentration in activity of the radioisotopes 238 U, 232 Th, 40 K and 137 Cs, using a gamma rays spectrometry system based on a hyper pure germanium detector. The obtained results of activity concentration of the interest radioisotopes show similar values average to those published by UNSCEAR 1993. The population of the municipalities of Zacatecas and Guadalupe is exposed to the environmental gamma radiation coming from the contained radioisotopes in the construction materials; the annual equivalent effective dose by the cement is in the range of 116 at 562 μSv a -1 with an average of 340 μSv a -1 , of the lime is in the range of 36 at 212 μSv a -1 with an average of 87 μSv a -1 , and of the plaster is in the range of 16 at 27 μSv a -1 with an average of 22 μSv a -1 , this exposure does not represent any risk for the population's health. (Author)

Land use change (1940-2004) in six aquifer regions in Zacatecas, Mexico

Science.gov (United States)

In the years from 1940 to 1970, the development of the State of Zacatecas was based on extractive mining activities to sustain development. From 1965 and 1980, the attention turned agriculture, particularly to development of groundwater resources for irrigation. Due to the lack of a long-term plan f...

Calculation of the hydrogen produced by a PEM electrolyzer based on solar radiation in Zacatecas; Estimacion del hidrogeno producido por un electrolizador PEM a partir de la radiacion solar en Zacatecas

Energy Technology Data Exchange (ETDEWEB)

Duron-Torres, S. M.; Villagrana-Munoz, L.E.; Garcia-Saldivar, V.M. [Universidad Autonoma de Zacatecas, Zacatecas (Mexico)]. E-mail: duronsm@prodigy.net.mx; Arriaga-Hurtado, L.G. [Centro de Investigacion y Desarrollo Tecnologico en Electroquimica, Pedro Escobedo, Queretaro (Mexico)

2009-09-15

This work presents the calculation of the amount of hydrogen obtained from the use of a proton exchange membrane electrolysis cell. Measurements performed at the solarimeter station of the Campus Siglo XXI at the Zacatecas Autonomous University were used as a basis. Solar radiation was analyzed for the period November 2007 to April 2008, corresponding to when there is less solar radiation. The amount of average irradiation measured was de 6.6 kW-h/ m{sup 2}. The evaluation of the solar-hydrogen system was conducted with linear regressions of the behavior of the hydrogen flow in LN/min versus the solar irradiance in W/m{sup 2} for a PEM electrolyzer. The results obtained indicate that the maximum amount of hydrogen produced occurred in the month of April, with 9LN/min produced with a radiation intensity of roughly 900 W/m{sup 2}; a minimum of 6 LN/min was produced with a radiation of roughly 600 W/m{sup 2} during the month of December. Based on these results, we can foresee a minimum amount of hydrogen generated of 6 to 9 LN/min in the state of Zacatecas during an entire year, since the months evaluated are those with the least solar radiation. The measurements performed by the Siglo XXI station show that the solar radiation power measured is higher than the national and worldwide means, making Zacatecas a strategic state for the use of this renewable energy. The amounts calculated of hydrogen produced would indicate that it is feasible to establish solar-hydrogen systems in this region in order to obtain this energy using PEM electrolyzers. [Spanish] En este trabajo se presenta el calculo de la cantidad de hidrogeno que se obtendria, empleando un electrolizador de membrana de intercambio de protones tipo, tomando como base las medidas realizadas en la Estacion Solarimetrica del Campus Siglo XXI en la Universidad Autonoma de Zacatecas. El analisis de la radiacion solar se realizo en el periodo de noviembre de 2007 a abril de 2008 correspondiendo a la epoca de menor

Educação e arte na redução missioneira de San Ignacio Miní - Education and art in the mission of San Ignacio Miní

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Graciela Ormezzano, Brasil

2012-03-01

Full Text Available Esta investigação trata da arte nos processos educativos introduzidos pelos je-suítas junto aos índios guaranis. Objetiva-se descrever o espaço e a produção artística da redução de San Ignacio Miní e interpretar os modos educacionais dos europeus e sua influência na população autóctone, entre 1611 e 1768.  Trata-se de uma pesquisa bibliográfica que utiliza também fontes primárias embasadas na documentação já publicada e fotografias. Optou-se por uma abordagem qualitativa, seguindo o método histórico-antropológico descritivo de um grupo populacional assentado numa determinada redução e discute-se as relações educacionais entre ambas as culturas. Nesse sentido, são apontadas as diferenças culturais e o que pode ser compreendido como suas possibilidades de mixagem.Palavras-chave: arte, educação, missões. EDUCATION AND ART IN THE MISSION OF SAN IGNACIO MINÍAbstractThis research is about art in Jesuitical educative process with guaranis indians in the missions. The objective is to describe the space and the artistic production in San Ignacio Miní and to interpret the educational ways of Europeans and their influence in autochthons, between 1611 and 1768. This is a bibliographic research that uses also published primary fountains and photographs. It’s a qualitative study that follows the historic-anthropologic method that describe a group of people living in a determinate mission and talks about educational relations between both cultures and possibilities of fusion.Key-words: art, education, missions. EDUCACIÓN Y ARTE EN LA REDUCCIÓN MISIONERA  DE SAN IGNACIO MINÍResumenEsta investigación trata del arte en los procesos educativos introducidos por los jesuitas entre los indios guaraníes. El estudio objetiva describir el espacio y la producción artística de la reducción de San Ignacio Miní e interpretar las modalidades educacionales de los europeos y su influencia en la población autóctona, entre 1611

La revitalización del Centro Histórico de Zacatecas y la conciencia social

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Guadalupe Margarita González-Hernández

2009-01-01

Full Text Available El Centro Histórico de la ciudad de Zacatecas (México se ha convertido en el lugar ideal para turistas y consumidores de altos ingresos, mediante el aprovechamiento de un casco colonial que, en tanto patrimonio cultural, obliga a implantar una política de rehabilitación. Paralelo a ello, el proceso de suburbanización y conurbación hacia la vecina ciudad de Guadalupe ha generado una segmentación espacial, al incrementarse los costos de desplazamiento. Actualmente el Centro Histórico de Zacatecas es un espacio público con uso privado que se concibe como estéticamente espectacular, idóneo para actividades de ocio, dejando atrás su imagen como un lugar donde convergen las luchas de clases.

El “Mundus Subterraneus” de Juan Ignacio Molina o el geólogo como economista

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Orrego G., Francisco

2015-12-01

Full Text Available In general, the work of the Chilean ex Jesuit Juan Ignacio Molina (1740-1829 has not been studied under the light of history of geology. This article attempts to reconstruct the origin and morphology of the ideas in which the Chilean naturalist developed about the internal structure of the Earth. We will see how the geological ideas elaborated by Molina went beyond the scientific reflection. The development of a particular discipline as political economy during the eighteenth century also influenced Juan Ignacio Molina´s thoughts about the internal organization of the Earth, geological processes and the descriptions of the nature of Chilean kingdom in the late eighteenth century.En general, la obra del ex jesuita chileno Juan Ignacio Molina (1740-1829 no ha sido estudiada con profundidad a la luz de la historia de la geología. Este artículo reconstruye el origen y la morfología de parte de las ideas que el naturalista chileno elaboró sobre la estructura interna de la Tierra. Se verá cómo las ideas geológicas desarrolladas por Molina fueron más allá de la simple reflexión científica. El desarrollo de una disciplina particular y novedosa como la economía política, también influyó en el tipo de reflexiones que Juan Ignacio Molina desarrolló sobre la organización interior de la Tierra, los procesos geológicos y las descripciones sobre la naturaleza del Reino de Chile a fines del siglo XVIII.

El cristianismo de F. M. Dostoievski y su correspondencia con la experiencia del amor en Ignacio de Loyola

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Manuel Díaz Márquez

2017-08-01

Full Text Available Este artículo va a estar centrado en una cuestión fundamental: ¿pueden compararse las visiones éticas de Dostoievski e Ignacio de Loyola? Haciendo una revisión pormenorizada de las bases existenciales dostoievskianas, podremos comprobar cómo la vida de Ignacio de Loyola parece coincidir con la hoja de ruta que, más tarde, elaboraría Dostoievski en sus obras en busca de una plenitud humana. El hombre pleno propuesto por el autor ruso es un reflejo del San Ignacio que conocemos por su Autobiografía, un personaje que pasó de los confines existenciales más arraigados en el yo a una vida por y para los demás basada en una idea fundamental: «En todo, amar y servir».

EVALUATION OF HEAVY METALS POLLUTION OF SURFACE WATER FROM ARROYO SAN IGNACIO IN THE SIERRA TARAHUMARA, MEXICO

OpenAIRE

Celia Chávez-Mendoza; Celia Holguín-Licón; Rey M. Quintana-Martínez; Francisco J Camarillo- Acosta; Alexando Guevara-Aguilar; Ricardo A Soto-Cruz

2015-01-01

The aim of this work was to evaluate the metals content in surface water of Arroyo San Ignacio (San Ignacio stream) and its main tributary, which are located in a priority ecological region of Mexico. For this study, these streams were divided in three sampling zones establishing thirty two sampling sites. Al, As, B, Ca, Cd, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, Pb, Se, Si and Zn were measured. Some physicochemical parameters were also evaluated. Results indicated significant difference (P≤0.05) in ...

Algo sobre las relaciones de Pau con Ignacio -y Cándido- Bolívar

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Laínz, Manuel

2001-06-01

Full Text Available Some relationships of considerable interest to the history of Spanish Botany are illustrated based on documents at the author's disposa]. Ignacio's Bolívar leadership in the whole range of our Natural Sciences is well known; a leadership Cándido, his son, inherited early, it seems, and continued up to end of the civil war.Frente a las bases documentales a mi alcance, trato de ilustrar unas relaciones de no poco interés para la historia de la Botánica en España: es notoria la posición rectora de Ignacio Bolívar, durante medio siglo, en todo el ámbito de nuestras Ciencias Naturales, que su hijo Cándido parece haber tempranamente usufructuado, y conservado hasta el fin de la guerra civil.

La cultura emprendedora y los proyectos financiados con remesas zacatecas

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Ramírez Calvillo, Rodolfo

2013-06-01

Full Text Available En el presente estudio se analizan los proyectos productivos apoyados por el Programa 3x1 Para Migrantes en Zacatecas durante el periodo 2002-2007 a fin de determinar dentro del concepto de cultura emprendedora la identificación del giro en que les agradaría emprender a los líderes de los proyectos productivos  y  reconocer el perfil de los emprendedores.Se seleccionó el enfoque de métodos mixtos porque tiende a concepciones pragmáticas del conocimiento. Recurre a preguntas abiertas y cerradas, enfoques emergentes y predeterminados,  datos y los respectivos análisis (Creswell, 2003.La estrategia de indagación que se utilizó fue la secuencial exploratoria, debido a sus características, en la obtención y análisis de los datos cualitativos, seguida por la obtención y análisis de los datos cuantitativos.Los resultados fue que la gran mayoría desea continuar con la actividad en la que actualmente  está trabajando y el nuevo emprendimiento consolidaría su actual situación, emprenderían  en otra rama como la agricultura controlada como el caso del invernadero para evitar las adversidades climatológicas, o como el caso de la fruticultura, el avanzar hacia la envasadora de frutas y las conservas.No hay un solo perfil sino una diversidad con ciertos rasgos característicos propios del entorno del estado de Zacatecas. 

The Temple San Ignacio de Loyola In Pátzcuaro

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Carlos Alfonso Ledesma Ibarra

2014-08-01

Full Text Available This article analyzes some of the architectural characteristics of the Temple of the Company of Jesus in Patzcuaro. The Temple of San Ignacio de Loyola was tion to an intention to join the Jesuits of the visual and urban discourse in this city-ancient bishopric founded by Don Vasco de Quiroga. With this intention a study is done based on some concepts from the Jesuit architecture and some of the elements of this temple compared to other buildings in the town. 

BEAN PRODUCERS’ PERSPECTIVES OF DEVELOPMENT IN SOMBRERETE, ZACATECAS

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Octaviano Ceceñas-Jacquez

2015-07-01

Full Text Available In this investigation production strategies, marketing, food security and development possibilities for bean producers in the municipality of Sombrerete, Zacatecas are identified. The study is approached from the perspective of the theory of rural territorial development, and surveys producers were conducted. It is concluded that the region is moving smallholdings and decrease in family income, so that agriculture becomes increasingly a subsistence activity where diversification becomes more important. Productive transformation has its limitations due to factors such as the arid climate, the largest division of the land, the high cost of credit, low level of technology and knowledge producers. Additionally, much of small producers is outside the new models of organization and government support, so cannot be considered solved the institutional framework to promote equitable development of producers.

Eficiencia y productividad del cultivo de frijol en un sistema de riego por bombeo en Zacatecas, México

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José Luis Ríos Flores

2017-01-01

Full Text Available La escasez de agua es un factor limitante para la agricultura. Conforme la competencia por este recurso se intensifica, el sector agrícola debe hacer un uso más eficiente. Se estima la productividad del agua en frijol (Phaseolus vulgaris L. producido en Calera y Villa de Cos, Zacatecas, con base en la metodología establecida por Ríos et al. (2015. La productividad física fue 0.118 kg m-3, es decir, 8 442 L kg-1 de frijol para el Distrito de Desarrollo Rural 189 Zacatecas. El precio del metro cúbico para riego fue $0.48 m-3 y utilidad bruta MN$1.88m-3. Se concluye que la productividad agrícola del agua en frijol fue baja, por lo que la producción de frijol en bombeo es insostenible.

La competitividad sistémica de la industria del tomate de agricultura protegida en Zacatecas

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Luz Evelia Padilla Bernal

2016-02-01

Full Text Available La industria del tomate de agricultura protegida en Zacatecas ha crecido aceleradamente en los últimos años; sin embargo, hay poca información sobre ella. Los productores están haciendo grandes inversiones sin una base sólida de información. La apertura comercial y la globalización de los mercados, así como las nuevas tendencias en el sector agroalimentario están impactando la competitividad. En este trabajo se determina el nivel de competitividad de la industria del tomate bajo agricultura protegida de Zacatecas, a fin de proveer elementos que apoyen el diseño de políticas para el desarrollo de una competitividad sustentable. Se desarrolla a través de una evaluación a la industria bajo un enfoque empresarial aplicando un modelo de competitividad sistémica. La información se obtuvo a través de entrevistas a técnicos, propietarios de las agroempresas, investigadores y autoridades gubernamentales. Las unidades de producción exportadoras y las de alta tecnología son las que tienen mejor posición competitiva

VULNERABILIDAD SOCIAL MUNICIPAL EN EL ESTADO DE ZACATECAS, MÉXICO

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Domingo Cervantes Barragán

2009-01-01

Full Text Available Bajo el título de «Vulnerabilidad social municipal en el Estado de Zacatecas, México» el presente trabajo se propone contribuir a la conceptualización teórica del fenómeno de la vulnerabilidad social, la propuesta de posibles dispositivos metodológicos para su abordaje y el trabajo con un caso específico que contribuya a validar teorizaciones y metodologías. El trabajo examina algunas de las aproximaciones al enfoque de la vulnerabilidad poniendo el énfasis principal en la cuestión de los activos, y da una mirada especial al tratamiento del problema en América Latina y el Caribe, para de ahí avanzar hacia el planteamiento de la vulnerabilidad social en el Estado de Zacatecas, México; para cuyo estudio en sus diferentes manifestaciones (aquí se tomó el caso de la vivienda, se construyó un modelo formal basado en el análisis multivariante de conglomerados según el método ward's y por la distancia métrica city block. A partir del análisis realizado se concluye que se concluye que la vulnerabilidad por la vivienda es una medida multicausal del riesgo y peligro de sufrir daño que padecen las personas, los hogares y las comunidades, que no tienen posibilidades de activar eficazmente los activos disponibles y en ocasiones se quedan indefensas, ante el comportamiento de las variables asociadas con el tipo de vivienda, el numero de cuartos de la vivienda y el tipo de propiedad sobre la misma; todo ello acelerado por las condiciones, restricciones y exclusiones que se derivan de la nueva economía de mercado.

Study of gamma radiation in honey from the Zacatecas State

International Nuclear Information System (INIS)

Saucedo A, S. A.; Zapata V, M. C.; Pinedo V, J. L.; Davila R, J. I.; Rios M, C.; Mireles G, F.

2017-09-01

Radioactivity of honey samples from 10 municipalities of the Zacatecas State in Mexico was investigated by gamma spectrometry. The honey corresponds to the prosopis laevigata flowering. The purpose of the study was to estimate the background levels of natural radioactivity and to discard a possible contamination with the artificial 137 Cs in honey. Any naturally occurring radionuclide could be determined except for 40 K, which was quantified in 8 of the 10 samples, with an average in specific activity of 9.75 ± 1.8 Bq/kg. No signal for the energy of the anthropogenic radionuclide 137 Cs was observed, corroborating that the radiation levels are in good agreement with those reported for another honeys in the world. (Author)

Remesas y desarrollo humano: el caso de Zacatecas

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Ramón A. Castillo Ponce

2008-01-01

Full Text Available Tradicionalmente, el estudio de las remesas se ha enfocado a evaluar su repercusión económica en la comunidad receptora. El presente estudio adopta una visión alternativa y analiza su efecto en el desarrollo humano de las familias que las reciben. El interés es saber si los fondos que llegan del extranjero son empleados en rubros distintos a los del consumo tradicional; tales como cuidado médico o educación. Con datos de la muestra del XII Censo general de población y vivienda, se construyó un índice de desarrollo humano (IDH, para Zacatecas y se estimó su relación estadística con las remesas. Mediante una metodología de variables instrumentales, se encontró que están positiva y significativamente relacionadas con el IDH.

Control of Movement: Press and Civic Associations in Zacatecas, Mexico, 1821-1845

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Rosalina Ríos Zúñiga

2002-07-01

Full Text Available This essay explores the  development of press and civic associations in Zacatecas during the years 1821 to 1845. Both vehicles had a strong link and helped to emerge local public spaces. After an open and dynamic beginning, in which they helped to expand republican political culture, and also created expectations among  lower classes to  citizenship, they  were closed down  by elites.  This  closing happened  principally as an  elite reaction against the popular revolt that occurred in Sombrerete at the beginning of 1829, and it lasted until 1845.

Estrategias de asociación empresarial financiera: El Banco de Zacatecas, 1890-1897

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Moisés Gámez

2009-06-01

Full Text Available El artículo muestra la gestación de la banca en Zacatecas a partir de los agentes informales de intermediación financiera que explican su establecimiento; la vinculación entre la formación temprana de los bancos regionales antes de la Ley de 1897 y el sector minero; y los agentes socioeconómicos involucrados en los sistemas financieros así como sus estrategias de asociación. Una primera hipótesis es que el sector minero estimuló la configuración de un sistema bancario que respondiera a las necesidades financieras propias del sector y contribuyera a dinamizar las transacciones económicas. En la estructuración del sistema intervinieron agentes con funciones financieras reconocidos en el estado, que denota una parte de la historia de las redes socieconómicas.The paper shows the birth of the banking system in Zacatecas. First it explain the foundations of the system by analyzing the role of informal agents, acting as intermediaries. Second, the relationship between the early establishment of regional banks (before the 1897 Law, the mining sector and the socioeconomic agents is explored, considering association strategies. Finally, the following preliminary hypothesis is formulated: The mining sector stimulated the configuration of a banking system, which responded to its particular financial needs, improving the dynamics of financial transactions. Furthermore, agents recognized by the State also show the history of socioeconomic networks.

Study of gamma radiation in honey from the Zacatecas State

Energy Technology Data Exchange (ETDEWEB)

Saucedo A, S. A.; Zapata V, M. C.; Pinedo V, J. L.; Davila R, J. I.; Rios M, C.; Mireles G, F., E-mail: ssaucedo@uaz.edu.mx [Universidad Autonoma de Zacatecas, Unidad Academica de Estudios Nucleares, Cipres No. 10, Fracc. La Penuela, 98060 Zacatecas, Zac. (Mexico)

2017-09-15

Radioactivity of honey samples from 10 municipalities of the Zacatecas State in Mexico was investigated by gamma spectrometry. The honey corresponds to the prosopis laevigata flowering. The purpose of the study was to estimate the background levels of natural radioactivity and to discard a possible contamination with the artificial {sup 137}Cs in honey. Any naturally occurring radionuclide could be determined except for {sup 40}K, which was quantified in 8 of the 10 samples, with an average in specific activity of 9.75 ± 1.8 Bq/kg. No signal for the energy of the anthropogenic radionuclide {sup 137}Cs was observed, corroborating that the radiation levels are in good agreement with those reported for another honeys in the world. (Author)

Radon survey related to construction materials and soils in Zacatecas, Mexico using LR-115

International Nuclear Information System (INIS)

Mireles, F.; Garcia, M.L.; Quirino, L.L.; Davila, J.I.; Pinedo, J.L.; Rios, C.; Montero, M.E.; Colmenero, L.; Villalba, L.

2007-01-01

Indoor radon gas ( 222 Rn), present in the air inside buildings, is one of the most important sources of radiation exposure to the population. This gas originates in the 238 U radioactive decay chain, which is contained in rock and solid soil particles. Radon accumulation in confined spaces, inside buildings, depends on several factors such as the type of soils, type of constructions, building materials, and ventilation. The aim of this work is to present indoor and outdoor radon concentrations for 202 dwellings and indoor concentrations for 148 public clinics; and the radon concentrations relate to the type of predominant soils, the construction years; and building materials used in the ceilings, walls and floors, for cities and towns of the 57 municipalities in the State of Zacatecas, Mexico. The 222 Rn concentrations were measured with a passive-type radon monitor, with LR-115 as detector material; and the radon survey was made during four stages of three months each throughout Zacatecas from 2001 to 2002. The indoor and outdoor radon concentration averages in dwellings were 55.6±4.9Bqm -3 and 46.5±5.3Bqm -3 , respectively. The indoor radon concentration average in public clinics was 57.8±5.4Bqm -3 . These values were lower than the US EPA action limit of 148Bqm -3

La problemática del manejo de los residuos sólidos en seis municipios del sur de Zacatecas

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Germaín A. Castañeda Delgado

2015-01-01

Full Text Available los objetivos de la presente investigación son determinar la cantidad de residuos sólidos generados en seis municipios del estado de Zacatecas, México, y comparar su composición porcentual en peso y volumen. Los resultados muestran la complejidad para el tratamiento y la disposición final de residuos sólidos en los municipios rurales y urbanos, debido a los grandes volúmenes generados y a los cambios en los patrones de consumo, que revelan la necesidad de emprender proyectos enfocados a su reducción, reciclaje, reutilización y valorización energética en los municipios analizados, además pueden servir para evaluar el inicio de acciones conjuntas entre ciudadanos y autoridades municipales para su tratamiento y disposición final. Esta investigación pretende contribuir al entendimiento de los problemas asociados a la disposición final de residuos en el estado de Zacatecas.

Preliminary results of the evaluation of the Wind power resource in several sites of the state of Zacatecas; Resultados preliminares de la evaluacion del recurso eolico en varios sitios del estado de Zacatecas

Energy Technology Data Exchange (ETDEWEB)

Reta, Manuel; Soto, Cristian; De la Torre, Jorge; Ibarra, Salvador; Alvarez, Jose; Romo, Guillermo; Banuelos, Francisco; Ochoa, Carlos; Martinez, Antonio; Aguilar, Efrain; Medina Garcia, G; Rumayor R, A.F. (Mexico)

2009-07-15

The present article shows the preliminary results of the analysis of wind power monitoring of fifteen agro-climatic stations 3 m high, of Instituto Nacional de Investigationes Forestales, Agricolas y Pecuarias of Zacatecas state. The preliminary analysis of the available data of wind velocity allows to extrapolate values at 10 m and 30 m of high in each one of the measured sites, and to evaluate the Wind potential, in W/m{sup 2}, at 30 m high. These results will allow selecting the best sites for the collection of wind power generators of medium and low scale for the possible development of wind farms in rural zones not connected to the national power network. [Spanish] El presente articulo muestra los resultados preliminares del analisis de monitoreo eolico de quince estaciones agroclimaticas a 3 m de altura, del Instituto Nacional de Investigaciones Forestales Agricolas y Pecuarias (INIFAP), distribuidas en el estado de Zacatecas. El analisis preliminar de los datos disponibles de velocidad de viento permite extrapolar valores a 10 m y 30 m de altura en cada uno de los sitios medidos, y a evaluar el potencial eolico, en W/m{sup 2}, a 30 m de altura. Estos resultados permitiran seleccionar los mejores sitios para la coleccion de aerogeneradores de mediana y baja escala para el posible desarrollo de granjas eolicas en zonas rurales desconectadas de la red electrica nacional.

General characteristics of the diet of Trachinotus paitensis (Teleostei: Carangidae from San Ignacio Lagoon, Baja California Sur, Mexico

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V.H. Cruz Escalona

2004-03-01

Full Text Available The food habits of Trachinotus paitensis, in San Ignacio Lagoon B.C.S., Mexico, were investigated. We observed that T. paitensis is carnivorous, feeding mainly on benthic invertebrates (the gastropods Anachis spp., Bittium spp., and the crustacean larvae. We concluded that T. paitensis is an opportunist predator that impacts mainly on epibenthic invertebratesFueron investigados los hábitos alimenticios de Trachinotus paitensis, en la laguna San Ignacio B.C.S., México. Se observó que T. paitensis es carnívoro, y se alimenta principalmente de invertebrados bénticos (los gastrópodos Anachis spp., Bittium spp., y larvas de crustáceos. En conclusión esta especie es un depredador oportunista que tiene un impacto principalmente sobre las poblaciones de invertebrados epibénticos

"Entre amigos y masones, o las nuevas formas de asociarse en Zacatecas (1813-1829"

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Marco Antonio Flores Zavala

2011-01-01

Full Text Available El objetivo en este artÌculo es presentar los rasgos comunes de tres asociaciones contempor·neas y circunscritas en la provincia mexicana de Zacatecas. Una es la Sociedad de Amigos del PaÌs y las otra dos son las logias masÛnicas "Estrella Chichimeca" y "Fortaleza de Guerrero". AcompaÒamos un par de notas sobre los vÌnculos en estas sociabilidades, e interrogamos quÈ fue de singular en cada logia y quÈ vislumbramos de las posibles transferencias entre ellas.

Cartas de un general porfirista: Correspondencia familiar de Ignacio Bravo, 1889-1918 Letters from a Porfirian General: Family Correspondence of Ignacio Bravo, 1889-1918

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Martín Ramos Díaz

2012-08-01

Full Text Available La correspondencia familiar de Ignacio Bravo muestra facetas poco conocidas de los primeros años de vida del territorio de Quintana Roo, de algunos episodios de la revolución mexicana y del exilio del presidente Victoriano Huerta en Texas. Pero, sobre todo, las cartas personales del general Bravo delinean el itinerario de una familia de militares en los años finales del siglo XIX y primeros del siglo XX, en el México de Porfirio Díaz. El presente artículo da la noticia del hallazgo de cientos de piezas de correspondencia personal de Bravo y al mismo tiempo realiza una antología de la información que ayuda a comprender, con nuevos datos, sucesos recurrentes en la historiografía regional del sureste mexicano, como la pacificación de los mayas, la creación del territorio federal de Quintana Roo en la frontera México-Belice y el entorno selvático y hostil para los pioneros que se establecieron en esa alejada región.Ignacio Bravo's family correspondence reveals little-known aspects of the early years of Quintana Roo, certain episodes of the Mexican Revolution and President Victoriano Huerta's exile in Texas. Above all, General Bravo's personal letters trace the lives of a family of military men in the late 19th and early 20th century in the Mexico of Porfirio Díaz. The article reveals the discovery of hundreds of pieces of Bravo's personal correspondence and provides an anthology of the information that uses new data to explain recurrent events in the regional historiography of the Mexican southeast, such as the pacification of the Maya, the creation of the federal territory of Quintana Roo on the Mexico-Belize border and the hostile, jungle environment for the pioneers who settled in this far-off region.

Study of the environmental neutron spectrum at Zacatecas city

International Nuclear Information System (INIS)

Vega C, H.R.

2003-01-01

The environmental neutron spectrum has been measured at Zacatecas City in Mexico. Neutron spectrum was unfolded from count rates obtained with a multisphere neutron spectrometer with a Li I(Eu) scintillator. With the spectrum information the ambient dose equivalent and the isotropic effective dose were calculated. A model based upon the geomagnetic latitude and the altitude above sea level, that allows to estimate the neutron fluence rate is proposed, the model results are compared with total neutron fluences measured at several locations worldwide. Environmental neutron spectrum shows peaks at 1 and 100 MeV as well as a relevant amount of low energy neutrons. The neutron fluence rate was 65 ± 3 cm -2 -h -1 , producing 13.7 ± 0.6 n Sv-h -1 due to ambient dose equivalent rate and an isotropic effective dose rate of 14.1 ± 0.6 n Sv-h -1 . Neutron fluence rates predicted with the model are in agreement with those reported in the literature. (Author)

Study of the environmental neutron spectrum at Zacatecas city

Energy Technology Data Exchange (ETDEWEB)

Vega C, H.R. [Universidad Autonoma de Zacatecas, Cuerpo Academico de Radiobiologia, A.P. 336, 98000 Zacatecas (Mexico)

2003-07-01

The environmental neutron spectrum has been measured at Zacatecas City in Mexico. Neutron spectrum was unfolded from count rates obtained with a multisphere neutron spectrometer with a Li I(Eu) scintillator. With the spectrum information the ambient dose equivalent and the isotropic effective dose were calculated. A model based upon the geomagnetic latitude and the altitude above sea level, that allows to estimate the neutron fluence rate is proposed, the model results are compared with total neutron fluences measured at several locations worldwide. Environmental neutron spectrum shows peaks at 1 and 100 MeV as well as a relevant amount of low energy neutrons. The neutron fluence rate was 65 {+-} 3 cm{sup -2}-h{sup -1}, producing 13.7 {+-} 0.6 n Sv-h{sup -1} due to ambient dose equivalent rate and an isotropic effective dose rate of 14.1 {+-} 0.6 n Sv-h{sup -1}. Neutron fluence rates predicted with the model are in agreement with those reported in the literature. (Author)

Llamados a servir: los hospitalarios de San Juan de Dios en Zacatecas, México en el siglo XVII

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González Fasani, Ana Mónica

2007-12-01

Full Text Available Consolidated the Order of San Juan of God in Spain, their religious soon were required to pass to American lands. With the purpose of lifting hospitals they arrived to beginnings of the XVII century and they were organized in three counties: one that would embrace the viceroyalty of New Spain and of overseas, the other one the viceroyalty of the Peru and a third, the denominated Mainland. To four years of having installed in Mexico, they were requested in the populous and rich mining city call Our Mrs. of the Zacatecas.Consolidada la Orden de San Juan de Dios en España, sus religiosos pronto fueron requeridos para pasar a tierras americanas. Con el fin de levantar hospitales llegaron a inicios del siglo XVII y se organizaron en tres provincias: una que abarcaría el virreinato de Nueva España y de ultramar, la otra el virreinato del Perú y una tercera, la denominada Tierra Firme. A cuatro años de instalados en México, fueron solicitados en la populosa y rica ciudad minera llamada Nuestra Señora de los Zacatecas.

Latent Class Models in the Assessment of Education: The Case of Students’ Academic Attainment in Elementary Education in Zacatecas Modelos de Clase Latente en la Evaluación de la Educación. El Caso del Aprovechamiento Escolar en la Educación Primaria de Zacatecas.

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Francisco Muro González

2008-01-01

Full Text Available Based on an advanced statistical method (Latent Class Analysis, the author jointly examines two crucial factors in the assessment of students? performance in elementary school: School attainment and teacher education ( based on teachers? results in tests taken to earn their teaching credentials. Data from files in the 2001 Archives for the State of Zacatecas, Mexico are used to make this analysis. The author shows that when working with latent class models, one can make a more significant in depth analysis because by virtue of using this method, it is viable to construct suitable clusters and to segment the data files more efficiently in order to find differentiated effects of parameters in the population. A partir de una metodología de estadística avanzada, la de análisis de clase latente, el autor analiza conjuntamente dos archivos cruciales en la evaluación del desempeño de los estudiantes de primaria: los de factor aprovechamiento escolar y factor preparación profesional (o resultados de los exámenes de carrera magisterial. El autor utiliza para ello los archivos correspondientes al año 2001 del estado de Zacatecas. En el texto se muestra que al trabajar con modelos de clase latente se puede ganar significativamente en profundidad en el análisis, pues mediante este método es viable construir clusters adecuados y segmentar eficientemente el archivo de datos para encontrar efectos diferenciados de los parámetros en la población.

En torno a un nuevo corpus musical en la Iglesia de San Ignacio: música, religión y sociedad en Santiago (1856-1925 Music, Religion and Society in Santiago (1856-1925: A New Musical Source discovered at the San Ignacio Church

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Alejandro Vera

2007-12-01

Full Text Available El presente artículo constituye una primera aproximación a la música de los jesuítas en Chile tras su expulsión en 1767 y, específicamente, al fondo musical conservado en la Iglesia de San Ignacio de Santiago. Los más de quinientos volúmenes impresos y manuscritos que lo componen datan aproximadamente de 1880 a 1960 y dan cuenta de la vida musical de dicha institución y el Colegio de San Ignacio, proporcionando información nueva sobre diversos músicos que desarrollaron una actividad relevante en la ciudad como intérpretes, directores y profesores. El período escogido para este estudio se extiende entre la fundación del colegio en 1856 hasta mediados de la década de 1920, cuando finaliza, para algunos historiadores, el llamado "Chile moderno". Los temas que se estudian son, entre otros: el repertorio conservado y su función, las relaciones entre el colegio y la sociedad santiaguina del período, y la repercusión que tuvieron en el medio local los procesos de reforma de la música sacra de fines del siglo XIX y comienzos del XXThis article considers for the first time the music of the Jesuits in Chile after their expulsion in 1767. It is focused on the music collection preserved at the Church of San Ignacio in Santiago. It contains more than five hundred manuscript and printed sources dated from about 1880 to 1960, which reflect the musical life of this church and the Colegio (high school of San Ignacio. New data is supplied on relevant musicians who were active as performers, conductors and music teachers in Santiago. The period covered by this study begins in 1856 with the foundation of the Colegio, finishing about 1925, a year when, according to some historians, concludes the era of the so called "modern Chile". Among other issues, we shall study the musical repertory and its function; the relationships between the school and Santiago's social life, and the consequences of the reform of sacred music of the Catholic Church

Functional and Biochemical Characterization of Three Recombinant Human Glucose-6-Phosphate Dehydrogenase Mutants: Zacatecas, Vanua-Lava and Viangchan

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Gómez-Manzo, Saúl; Marcial-Quino, Jaime; Vanoye-Carlo, America; Serrano-Posada, Hugo; González-Valdez, Abigail; Martínez-Rosas, Víctor; Hernández-Ochoa, Beatriz; Sierra-Palacios, Edgar; Castillo-Rodríguez, Rosa Angélica; Cuevas-Cruz, Miguel; Rodríguez-Bustamante, Eduardo; Arreguin-Espinosa, Roberto

2016-01-01

Glucose-6-phosphate dehydrogenase (G6PD) deficiency in humans causes severe disease, varying from mostly asymptomatic individuals to patients showing neonatal jaundice, acute hemolysis episodes or chronic nonspherocytic hemolytic anemia. In order to understand the effect of the mutations in G6PD gene function and its relation with G6PD deficiency severity, we report the construction, cloning and expression as well as the detailed kinetic and stability characterization of three purified clinical variants of G6PD that present in the Mexican population: G6PD Zacatecas (Class I), Vanua-Lava (Class II) and Viangchan (Class II). For all the G6PD mutants, we obtained low purification yield and altered kinetic parameters compared with Wild Type (WT). Our results show that the mutations, regardless of the distance from the active site where they are located, affect the catalytic properties and structural parameters and that these changes could be associated with the clinical presentation of the deficiency. Specifically, the structural characterization of the G6PD Zacatecas mutant suggests that the R257L mutation have a strong effect on the global stability of G6PD favoring an unstable active site. Using computational analysis, we offer a molecular explanation of the effects of these mutations on the active site. PMID:27213370

Entrepreneurial Abilities Development at Universities: The Case of Polytechnic University of Zacatecas, Mexico

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Rosa Elvira Campos Álvarez

2013-12-01

Full Text Available The development of entrepreneurs is an issue that has attracted interest of higher education public institutions (HEIs; programs of entrepreneurial development, promotion of entrepreneurship, and entrepreneurial skills are certain aspects generated by this topic; however, very little attention has been given to the measuring of entrepreneurial abilities as an indicator of performance entrepreneur development programs. This study aims to measure the level of entrepreneurial skills of University students and compare them with the level of entrepreneur’s skills in order to determine the impact of the program for entrepreneurial development on senior students of the Universidad Politécnica de Zacatecas in their career of administration and management of small and medium-sized enterprises.

Concentration levels of gamma radioactivity on superficial soils of municipalities of Guadalupe and Zacatecas; Niveles de concentracion de radiactividad gamma en suelos superficiales de los municipios de Guadalupe y Zacatecas

Energy Technology Data Exchange (ETDEWEB)

Mireles, F.; Flores, F. E.; Pinedo, J. L.; Davila, J. I.; Rios, C.; Lopez, H.; Saucedo, S. [Universidad Autonoma de Zacatecas, Unidad Academica de Estudios Nucleares, Calle Cipres No. 10, Fracc. La Penuela, 98068 Zacatecas (Mexico)], e-mail: fmireles@uaz.edu.mx

2009-10-15

A study on inside of municipalities of Guadalupe and Zacatecas in Zacatecas, Mexico was realized, with the purpose of determine the concentration levels of radionuclides {sup 232}Th, {sup 238}U, {sup 40}K and {sup 137}Cs, distributed on superficial soils. For this work was obtained a total of 44 samples of superficial soils nearby to 10 communities more populated of each one of municipalities; those that were prepared and placed on containers Marinelli type of 500 m L. The samples were measured in a gamma rays spectrometry system based on a germanium detector hyper pure, and was utilized the photo pick of 609 KeV of the {sup 214}Bi for to measure the activity of {sup 226}Ra, of 666 KeV for to measure the activity of {sup 137}Cs, of 911 KeV of the {sup 228}Ac for to measure the activity of {sup 232}Th, and of 1461 KeV for to measure the activity of {sup 40}K. The calculations to optimize the detector operation as much in efficiency as in energy were realized, and it was determined a time specifies for to obtain a relative error on the activity measurement smaller to 5%. Was found a minimum perceptible activity of 1.7 Bq{center_dot}kg{sup -1} for {sup 226}Ra, 0.96 Bq{center_dot}kg{sup -1} for {sup 137}Cs, 3.7 Bq{center_dot}kg{sup -1} for {sup 232}Th and of 6.8 Bq{center_dot}kg{sup -1} for {sup 40}K; these values were below those measured in the samples with the exception of 12 cases of the total for {sup 137}Cs. The average and concentration range in activity of soils of Guadalupe were of 22.3{+-}1.5% (11-31.3) Bq{center_dot}kg{sup -1} for {sup 226}Ra, of 2.7{+-}6% (0.95-5.5) Bq{center_dot}kg{sup -1} for {sup 137}Cs, of 28.2{+-}2.5% (11-41.8) Bq{center_dot}kg{sup -1} for {sup 232}Th and of 540.5{+-}0.6% (339.8-782.6) Bq{center_dot}kg{sup -1} for {sup 40}K. The average and concentration range in activity of soils of Zacatecas were of 24.8{+-}1.4% (8.3-34.4) Bq{center_dot}kg{sup -1} for {sup 226}Ra, of 3.5{+-}1.2% (1.1-7.7) Bq{center_dot}kg{sup -1} for {sup 137}Cs, of

Provisional catalogue of the flora of San Ignacio de Huinay, Chile

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Ramón Morales

2016-09-01

Full Text Available Contribution to the vascular plants flora of San Ignacio de Huinay natural reserve, Comau fiord, Región de los Lagos, Chile. To date, 262 species with their herbaria sheets stored in 5 different American and European herbaria (CONC, M, MA, and SGO and that of Huinay, are known in the territory. In this work some first new records for the South Cone are included, such as Potentilla anglica, Plantago media, and Mentha x rotundifolia. Furthermore, some of the records are new for the Flora of Chile, such as Juncus burkartii, only known from Argentina. Other species very scarcely cited in Chile, such as Solanum nigrum and Bromus squarrosus, are also included.

Detection of pathogens associated with psyllids and leafhoppers in Capsicum annuum L. in the Mexican States of Durango, Zacatecas, and Michoacán

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In the fall of 2014, five to seventy-five percent of chili and bell peppers (Capsicum annuum L.) in commercial fields located in the Mexican states of Durango, Zacatecas, and Michoacán, had various symptoms of deformed, small, mosaic, curled, and chlorotic leaves, shortened internodes and plant dwar...

General characteristics of the diet of Trachinotus paitensis (Teleostei: Carangidae) from San Ignacio Lagoon, Baja California Sur, Mexico.

Science.gov (United States)

Cruz Escalona, V H; Abitia Cárdenas, L A

2004-03-01

The food habits of Trachinotus paitensis, in San Ignacio Lagoon B.C.S., Mexico, were investigated. We observed that T. paitensis is carnivorous, feeding mainly on benthic invertebrates (the gastropods Anachis spp., Bittium spp., and the crustacean larvae). We concluded that T. paitensis is an opportunist predator that impacts mainly on epibenthic invertebrates.

Elementary school teachers perspective about educative reform in Zacatecas, México

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Elizabeth Cristina Bañuelos Sánchez

2017-04-01

Full Text Available The results of a research carried out in the state of Zacatecas, México, aiming at probing teachers perceptions about the Educative Reform (RE to elementary school education approved in 2013 in the country are presented. Structural reforms served as the research theoretical frame and are the starting point to analyze changes that reorganized educative institutions in general. The information gathering was conducted by an interview with open answers, focusing on the aspects which have direct effects on teachers: evaluation, entry requirements and the job continuity. The results show that most teachers do not oppose the evaluation, provided that it is used as a tool for improving their teaching practice. Yet they do mistrust the transparency of the system, since they consider that the RE is a hidden mechanism to fire teachers, instead of a mechanism to improve the quality of education.

Characterization of pottery from Cerro de Las Ventanas, Zacatecas, Mexico

International Nuclear Information System (INIS)

Lopez-del-Rio, H.; Mireles-Garcia, F.; Mendez-Cardona, R.Y.; Nicolas-Caretta, M.; Speakman, R.J.; Glascock, M.D.

2009-01-01

With the aim of classifying prehispanic pottery from Cerro de Las Ventanas site, Juchipila, Zacatecas, Mexico, instrumental neutron activation analysis (INAA) was used to analyze ceramic samples at the University of Missouri Research Reactor Center. Thirty-two chemical elements were measured: Al, As, Ba, Ca, Ce, Co, Cr, Cs, Dy, Eu, Fe, Hf, K, La, Lu, Mn, Na, Nd, Rb, Sb, Sc, Sm, Sr, Ta, Tb, Ti, Th, U, V, Yb, Zn, and Zr. Two multivariate statistical methods, cluster analysis and principal component analysis, were performed on the dataset to examine similarities between samples and to establish compositional groups. The statistical analyses of the dataset suggest that the pottery samples form a unique chemically homogeneous group, with the exception of one pottery sample. The compositional data were compared to an existing Mesoamerican ceramic database. It was found that the newly generated data fit best with data from a previous chemical analysis of pottery from the Malpaso Valley. However, despite the apparent similarity, pottery samples from the site of Cerro de Las Ventanas represent a new and unique chemical fingerprint in the region. (orig.)

Characterization of pottery from Cerro de Las Ventanas, Zacatecas, Mexico

Energy Technology Data Exchange (ETDEWEB)

Lopez-del-Rio, H.; Mireles-Garcia, F. [Unidad Academica de Estudios Nucleares, UAZ, Zacatecas (Mexico); Mendez-Cardona, R.Y. [Unidad Academica de Antropologia, UAZ, Zacatecas (Mexico); Nicolas-Caretta, M. [INAH Delegacion Zacatecas (Mexico); Coordinacion de Ciencias Sociales y Humanidades, UASLP, Fracc. Talleres, SLP (Mexico); Speakman, R.J. [Museum Conservation Inst., Smithsonian Institution, Suitland, MD (United States); Glascock, M.D. [Research Reactor Center, Univ. of Missouri, Columbia, MO (United States)

2009-09-15

With the aim of classifying prehispanic pottery from Cerro de Las Ventanas site, Juchipila, Zacatecas, Mexico, instrumental neutron activation analysis (INAA) was used to analyze ceramic samples at the University of Missouri Research Reactor Center. Thirty-two chemical elements were measured: Al, As, Ba, Ca, Ce, Co, Cr, Cs, Dy, Eu, Fe, Hf, K, La, Lu, Mn, Na, Nd, Rb, Sb, Sc, Sm, Sr, Ta, Tb, Ti, Th, U, V, Yb, Zn, and Zr. Two multivariate statistical methods, cluster analysis and principal component analysis, were performed on the dataset to examine similarities between samples and to establish compositional groups. The statistical analyses of the dataset suggest that the pottery samples form a unique chemically homogeneous group, with the exception of one pottery sample. The compositional data were compared to an existing Mesoamerican ceramic database. It was found that the newly generated data fit best with data from a previous chemical analysis of pottery from the Malpaso Valley. However, despite the apparent similarity, pottery samples from the site of Cerro de Las Ventanas represent a new and unique chemical fingerprint in the region. (orig.)

Distribución espacial y temporal de aves playeras (Orden: Charadriiformes en Laguna San Ignacio, Baja California Sur, México Temporal and spatial distribution of shorebirds (Charadriiformes at San Ignacio Lagoon, Baja California Sur, Mexico

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Luis Francisco Mendoza

2013-03-01

Full Text Available Con la pérdida o degradación de humedales han declinado las poblaciones de algunas especies tales como las aves playeras. En vista de que ha crecido el interés internacional por los estudios ecológicos sobre estas especies, se determinó la abundancia, distribución y riqueza espacio-temporal de las aves playeras en Laguna San Ignacio, Península de Baja California. Se realizaron 12 censos mensuales (octubre 2007-septiembre 2008 en el perímetro interno de la laguna; la cual se dividió en cuatro zonas, dos al norte y dos al sur. Temporalmente las abundancias menores se presentaron en mayo (1 585 aves y las mayores en octubre (47 410. Las especies más abundantes fueron: el picopando canelo (Limosa fedoa; 55% de los registros totales, el playero occidental (Calidris mauri; 23% y el playero pihuiuí (Tringa semipalmata; 10%. Estas especies fueron más abundantes en otoño. El picopando canelo y el playero pihuiuí estabilizaron sus números en invierno y primavera y estuvieron presentes en verano en bajos números, el playero occidental mostró oscilaciones notorias. Se presentan los primeros reportes del playero rojizo del Pacifico (Calidris canutus roselaari para la zona. La riqueza y abundancia estuvieron influenciadas temporal y espacialmente por las aves migratorias. Las mayores abundancias se presentaron al sur de la laguna, probablemente por la disponibilidad del alimento. Los resultados presentes permitieron incluir al área en la Red Hemisférica de Reservas para las Aves Playeras como sitio de importancia internacional.Baja California Peninsula has several wetlands that represent important ecosystems for shorebirds. San Ignacio Lagoon is one of these sites, and supports 10% of the total abundance of shorebirds reported in this Peninsula. Since there is few information about this group in this area, we studied spatial and temporal changes in abundance and distribution of shorebirds in San Ignacio Lagoon. For this, we conducted twelve

Próspero y el teatro nacional: encuentros transatlánticos en las revistas teatrales de Ignacio Manuel Altamirano, 1867-1876

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Christopher Conway

2014-06-01

Full Text Available En este trabajo, se analiza la demanda de un proyecto nacional de dramaturgia mexicana a partir del quehacer crítico del escritor, periodista, maestro y político mexicano Ignacio Manuel Altamirano en las “revistas teatrales” publicadas en prensa entre 1867 y 1876.

Elemental analysis of pottery from Cerro de las Ventanas, Zacatecas, by INAA

Energy Technology Data Exchange (ETDEWEB)

Lopez del Rio, H.; Mireles G, F. [Universidad Autonoma de Zacatecas, Unidad Academica de Estudios Nucleares, Calle Cipres No. 10, Fracc. La Penuela, 98068 Zacatecas (Mexico); Mendez C, R. Y. [Universidad Autonoma de Zacatecas, Unidad Academica de Antropologia, Apdo. Postal 555 Suc. C, Zacatecas (Mexico); Nicolas C, M. [Universidad Autonoma de San Luis Potosi, Coordinacion de Ciencias Sociales y Humanidades, Av. Industrias 101-A, Fracc. Talleres, 78494 San Luis Potosi (Mexico); Speakman, R. J. [Museum Conservation Institute, Smithsonian Institution, Suitland, 20746 Maryland (United States); Glascock, M. D. [Reactor Center, University of Missouri, Columbia, 65211 Missouri (United States)

2009-10-15

Fifteen ceramic fragments samples from Cerro de las Ventanas site, Zacatecas, were analyzed by instrumental neutron activation analysis. Thirty-two elements were measured: Al, As, Ba, Ca, Ce, Co, Cr, Cs, Dy, Eu, Fe, Hf, K, La, Lu, Mn, Na, Nd, Rb, Sb, Sc, Sm, Sr, Ta, Tb, Ti, Th, U, V, Yb, Zn, and Zr. Cluster analysis and principal component analysis were performed on the dataset to examine similarities between samples and to establish compositional groups. The statistical analyses of the dataset suggest that the pottery samples form a unique chemically homogeneous group, with the exception of one pottery sample. The compositional data were compared to an existing Meso american ceramic database. It was found that the newly generated data fit best with data from a previous chemical analysis of pottery from the Mal paso Valley. However, despite the apparent similarity, pottery samples from the site of Cerro de las Ventanas represent a new and unique chemical fingerprint in the region. (Author)

Elemental analysis of pottery from Cerro de las Ventanas, Zacatecas, by INAA

International Nuclear Information System (INIS)

Lopez del Rio, H.; Mireles G, F.; Mendez C, R. Y.; Nicolas C, M.; Speakman, R. J.; Glascock, M. D.

2009-10-01

Fifteen ceramic fragments samples from Cerro de las Ventanas site, Zacatecas, were analyzed by instrumental neutron activation analysis. Thirty-two elements were measured: Al, As, Ba, Ca, Ce, Co, Cr, Cs, Dy, Eu, Fe, Hf, K, La, Lu, Mn, Na, Nd, Rb, Sb, Sc, Sm, Sr, Ta, Tb, Ti, Th, U, V, Yb, Zn, and Zr. Cluster analysis and principal component analysis were performed on the dataset to examine similarities between samples and to establish compositional groups. The statistical analyses of the dataset suggest that the pottery samples form a unique chemically homogeneous group, with the exception of one pottery sample. The compositional data were compared to an existing Meso american ceramic database. It was found that the newly generated data fit best with data from a previous chemical analysis of pottery from the Mal paso Valley. However, despite the apparent similarity, pottery samples from the site of Cerro de las Ventanas represent a new and unique chemical fingerprint in the region. (Author)

Entender la diversidad familiar. Relaciones homosexuales y nuevos modelos de familia (José Ignacio Pichardo Galán

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Maribel Blázquez Rodríguez

2010-01-01

Full Text Available Este libro que sale a la luz es el resultado de la investigación realizada por José Ignacio Pichardo para su tesis doctoral. Su estudio, como perfectamente refleja el título, se dirige a recoger los cambios que se han venido dando en el concepto de familia, en concreto las formadas por personas que mantienen relaciones sexuales con personas de su mismo sexo.

Una Aparición de la Virgen con el Niño a san Felipe Neri de Francisco Ignacio Ruiz de la Iglesia: atribución y contexto iconográfico

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Gutiérrez Pastor, Ismael

2013-06-01

Full Text Available The author studies a painting of the Apparition of the Virgin and Child with St. Philip Neri, attributing it to the painter Francisco Ignacio Ruiz de la Iglesia and analyzing its iconography in the context of Baroque painting in Madrid.Se estudia una pintura de la Aparición de la Virgen con el Niño a San Felipe Neri, se atribuye al pintor Francisco Ignacio Ruiz de la Iglesia y se analiza su iconografía en el contexto de la pintura madrileña del Barroco.

Ignacio Arellano, El ingenio de Lope de Vega. Escolios a las «Rimas humanas y divinas del licenciado Tomé de Burguillos»

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Bienvenido Morros Mestres

2014-01-01

Full Text Available Review of Ignacio Arellano,El ingenio de Lope de Vega. Escolios a las «Rimas humanas y divinas del licenciado Tomé de Burguillos», IDEA/IGAS, New York, 2012, 305 pp. ISBN: 978-1-938795-84-8.

Multivariate statistical approximation of the in situ gamma-ray spectrometry of the State of Zacatecas, Mexico

International Nuclear Information System (INIS)

Lopez I, J. F.; Rios M, C.; Mireles G, F.; Saucedo A, S.; Davila R, I.; Pinedo, J.L.

2017-09-01

The environmental radioactivity evaluation is a key point in the assessment of the environmental quality. Through this, it can be found possible radioactive contamination, locate possible Uranium and Thorium deposits and evaluate the primordial isotopes concentration due to human activities. A radioactive map of the Zacatecas State, Mexico is under construction based on in situ gamma-ray spectrometry. The present work reports the results of the multivariate statistical approximation of the measured activity data. Based on Pearson correlation, the 228 Ac and 208 Tl activities are statistically significant, while the 214 Bi and 214 Pb activities are not statistically significant. These can be due to the existence or not of secular equilibrium in the Thorium and Uranium series. (Author)

Soil erosion assessment using the Universal Soil Loss Equation (USLE) in a GIS framework: A case study of Zacatecas, México

Science.gov (United States)

Betanzos Arroyo, L. I.; Prol Ledesma, R. M.; da Silva Pinto da Rocha, F. J. P.

2014-12-01

The Universal Soil Loss Equation (USLE), which is considered to be a contemporary approach in soil loss assessment, was used to assess soil erosion hazard in the Zacatecas mining district. The purpose of this study is to produce erosion susceptibility maps for an area that is polluted with mining tailings which are susceptible to erosion and can disperse the particles that contain heavy metals and other toxic elements. USLE method is based in the estimation of soil loss per unit area and takes into account specific parameters such as precipitation data, topography, soil erodibility, erosivity and runoff. The R-factor (rainfall erosivity) was calculated from monthly and annual precipitation data. The K-factor (soil erodibility) was estimated using soil maps available from the CONABIO at a scale of 1:250000. The LS-factor (slope length and steepness) was determined from a 30-m digital elevation model. A raster-based Geographic Information System (GIS) was used to interactively calculate soil loss and map erosion hazard. The results show that estimated erosion rates ranged from 0 to 4770.48 t/ha year. Maximum proportion of the total area of the Zacatecas mining district have nil to very extremely slight erosion severity. Small areas in the central and south part of the study area shows the critical condition requiring sustainable land management.

FRECUENCIA DE VARROOSIS Y NOSEMOSIS EN COLONIAS DE ABEJAS MELÍFERAS (Apis mellifera EN EL ESTADO DE ZACATECAS, MÉXICO

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Carlos A. Medina-Flores

2014-01-01

Full Text Available El objetivo del trabajo fue determinar la frecuencia y grado de infestación de varroosis ( Var ro a destructor e infección de nosemosis ( Nosema spp. en colonias de abejas ( Apis mellifera del estado de Zacatecas, durante el otoño y la primavera. Se inspeccionaron 299 colonias comer - ciales de abejas distribuidas en 15 municipios pertenecientes a tres zonas ecológicas: 1 zona semiseca templada, 2 zona semiseca semicálida y 3 zona subhúmeda templada. La prevalencia general fue 2.3 % para la nosemosis y 88 % para la varroosis. El nivel de infestación de varroa varió significativa - mente ( P = 0.05 entre el otoño y la primavera, y entre zonas sólo varió en la primavera ( P < 0.001. Du - rante el otoño, 44 % de las colonias presentaron niveles de infestación ≥ 5 %, mientras que en la prima - vera sólo 28 % superó dicho nivel. Nosema spp. se observó solamente en 4.7 % de la población analizada en primavera; la mayoría de los casos (86 % se detectó en la zona semiseca semicálida. Los resultados indican que la varroosis es la parasitosis más común de las abejas melíferas adultas en Zacatecas. La nosemosis no representa un problema serio para la apicultura de la entidad, debido a la baja frecuencia.

Evaluation of the increase in GH and IGF-1 and effectiveness in the treatment on Zacatecas population

International Nuclear Information System (INIS)

Gallegos F, P. I.; Badillo A, V.

2013-10-01

The acromegaly and gigantism are dysfunctions that are caused by hyper-secretion of growth hormone (GH) and of production in liver of growth factor similar to the insulin type 1 (IGF-1) mediated by the GH secretion. The secretor pituitary adenomas of GH are the main cause of the hyper-secretion. The acromegaly and gigantism are manifested respectively by acral alterations and extremities increase, and an excessive growth of the bones. Although a world prevalence of 40-60 cases by inhabitants million is registered, very few formal studies exist that confirm this number. According to the program Epiacro in Mexico is considered a prevalence of 13 cases by inhabitants million. In the Zacatecas State official statistical numbers are not had for these pathologies. Due to the few registrations that exist, or to the cases reported in Mexico, is necessary to evaluate patients with suspicion and with hyper-secretion diagnostic of GH, to contribute and/or to reinforce the health state and national statistics. In this work the GH and IGF-1 concentrations were measured on Zacatecas population to estimate the age range and sex with more probability of suffering this illness, and to evaluate the patients that have received some treatment to check their effectiveness verifying the GH and IGF-1 decrease and being able to obtain normal values. We register 26 patient cases with suspicion of GH hyper-secretion, of these 9 were affected by the illness. The hyper-secretion cases were presented with more frequency in half age adults, being affected in a same way as much men as women. To the end of the study only an affected patient concludes with the pharmacological treatment for the GH hyper-secretion control of a group of 5. (Author)

Multivariate statistical approximation of the in situ gamma-ray spectrometry of the State of Zacatecas, Mexico

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Lopez I, J. F.; Rios M, C.; Mireles G, F.; Saucedo A, S.; Davila R, I.; Pinedo, J.L., E-mail: fernandolf498@gmail.com [Universidad Autonoma de Zacatecas, Unidad Academica de Estudios Nucleares, Cipres No. 10, Fracc. La Penuela, 98060 Zacatecas, Zac. (Mexico)

2017-09-15

The environmental radioactivity evaluation is a key point in the assessment of the environmental quality. Through this, it can be found possible radioactive contamination, locate possible Uranium and Thorium deposits and evaluate the primordial isotopes concentration due to human activities. A radioactive map of the Zacatecas State, Mexico is under construction based on in situ gamma-ray spectrometry. The present work reports the results of the multivariate statistical approximation of the measured activity data. Based on Pearson correlation, the {sup 228}Ac and {sup 208}Tl activities are statistically significant, while the {sup 214}Bi and {sup 214}Pb activities are not statistically significant. These can be due to the existence or not of secular equilibrium in the Thorium and Uranium series. (Author)

Diversidad de la familia Orchidaceae en los bosques montanos de San Ignacio (Cajamarca, Perú

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Gloria Calatayud

2013-05-01

Full Text Available La insuficiente información sobre la flora, específicamente sobre la familia Orchidaceae y la inminente desaparición de los bosques en la Vertiente Oriental del río Chinchipe (San Ignacio, Cajamarca, fueron las razones suficientes que motivaron a realizar la presente investigación. La evaluación se realizó en cuatro localidades de la provincia San Ignacio (Cajamarca, durante el año 2000, con 27 cuadrantes de 500 m², distribuidos cada 100 m de altitud, desde los 800 hasta los 2700 m, el método de muestreo fue aleatorio. Según el índice de diversidad de Shannon–Wiener, la zona de estudio posee un alto grado de diversidad (entre H’= 5,93 en Selva Andina y H’= 4,02 en Camaná, gracias al buen estado de conservación de los bosques y a la topografía de la zona. Las localidades de Camaná-Crucero (173,55 son menos disímiles por presentar hábitats similares. Selva Andina (969,619 es la localidad más disímil con el grupo Crucero-Camaná-Nuevo Mundo, la cual a los 2700 m presenta un alto endemismo. Para las localidades evaluadas se reportan 205 especies distribuidas en 58 géneros, los cuales son reportes nuevos para la zona, 15 son registros nuevos para Perú, ocho de éstas dejan de ser endémicas para Ecuador. Se reporta por primera vez para Perú el género Chrysocycnis, y dos especies nuevas para la ciencia Sarcoglottis sp. y Maxillaria sp.

Chemins de traverse d’Ignacio Martínez de Pisón, roman de l’absence, roman de l’amour

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André-Alain Morello

2012-08-01

Full Text Available Chemins de traverse d’Ignacio Martínez de Pisón se présente comme la pseudo autobiographie d’un adolescent, Felipe, qui, à la mort de sa mère, est condamné à vivre avec un père marginal. Le texte est aussi la conversion d’un récit de type picaresque en un roman qui débouche sur la découverte mutuelle d’un père et d’un fils. L’errance des deux personnages, chemin de fuite destiné à compenser la disparition de Cecilia, conduit à une sorte d’assomption de l’amour.Caminos secundarios, de Ignacio Martínez de Pisón, se presenta como la supuesta autobiografía de un adolescente, Felipe, quien, a la muerte de su madre, se ve forzado a vivir con un padre marginal. El texto es también la evolución de una narración de carácter picaresco hacia una novela que desemboca en el descubrimiento mutuo entre padre e hijo. El vagabundeo de ambos personajes, escape y consuelo por la desaparición de Cecilia, lleva a una forma de exaltación amorosa.

Presencia y abundancia de aves de la Isla Farallón de San Ignacio, Sinaloa

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Miguel Angel Guevara Medina

2015-06-01

Full Text Available Para determinar la presencia y abundancia de aves que utilizan la isla Farallón de San Ignacio, Sinaloa, documentamos las aves observadas durante 46 visitas de cinco días a la isla entre 2003 y 2008. Registramos 57 especies de aves. En la isla anidaron regularmente cinco especies de aves marinas:Sula nebouxii, S. leucogaster, Phaethon aethereus, Phalacrocorax auritus y Larus heermanni. En 2008 anidó una rapaz, Falco peregrinus. Además, observamos 24 especies de aves acuáticas no reproductoras y 27 especies de aves terrestres. La temporada reproductiva de las especies anidantes coincide con la época de alta productividad primaria en el sur del Golfo de California. La isla es importante como sitio de anidación para P. aethereus y es una de las dos colonias más importantes en el Golfo de California. Para el resto de las especies anidantes, la isla tiene una importancia marginal, pues otras islas albergan colonias mayores. Debido a la ausencia de vegetación, las aves terrestres usan la isla sólo de manera ocasional y por breves periodos, especialmente los migrantes neotropicales durante la migración. Al comparar con otras islas de la parte sur del Golfo de California, Farallón de San Ignacio exhibió una riqueza de especies mayor a lo esperado de acuerdo con su tamaño. Esta discordancia se podría explicar por un esfuerzo mayor en el muestreo y posiblemente por la existencia de una mayor cantidad de especies de aves terrestres usando los hábitats costeros de Sinaloa y dispersándose ocasionalmente a islas cercanas.

Mineros y poder en Nueva España. El caso de Zacatecas en vísperas de la Independencia

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Frédérique Langue

2005-11-01

Full Text Available "En Nueva Galicia el poder ha degenerado en tiranía" decía en una carta dirigida al virrey el visitador y juez de minas Francisco Antonio de Echavarri. El documento se remonta al año 1741. Comisionado por el virrey para averiguar el estado de las minas de Zacatecas -para aquel entonces decaídas- y poner término a la transgresión de la legislación minera por parte de los dueños de minas,  y acabar en fín con los numerosos conflictos originados por esta situación (acaparamientos de minas y tier...

Memoria, imaginación y sabiduría en Ignacio Gómez de Liaño

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Vinatea Serrano, Eduardo

2005-01-01

La obra de Ignacio Gómez de Liaño, elaborada a lo largo de más de treinta años, es sin duda alguna, una filosofía singular que concibe la tarea del filósofo como un conocimiento de orden práctico que; debe llevar a una transformación de la visión del mundo y a una metamorfosis de la personalidad. Esta filosofía práctica tiene como interlocutor principal a Giordano Bruno, hallando en su obra mnemónica el punto de partida para un largo viaje que le ha llevado a transitar por las viejas y casi p...

THE IMAGE OF THE BULLFIGHT AND BULLFIGHTER IN 20TH CENTURY SPANISH POETRY: LORCA'S ELEGY LAMENT FOR IGNACIO SÁNCHEZ MEJIAS / 20. YÜZYIL İSPANYOL ŞİİRİNDE BOĞA GÜREŞİ VE MATADOR İMGESİ: LORCA'NIN IGNACIO SÁNCHEZ MEJIAS'A AĞIT ÖRNEĞİ

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Ebru Yener GÖKŞENLİ

2015-12-01

Full Text Available The Spanish people worship bulls with the characteristics like aggressiveness, power and fearlessness, and also worship the bullfighters that fight a dual with bulls. The tradition of bullfight defines the basic character of a nation which perceive life as becoming continuously face to face with death. This character makes the Spaniards consider bullfights as a form of art and the possibility of death becomes an inspiration of this deadly art. The famous Spanish poet Federico García Lorca calls as duende, the muse that comes up at the time when the bullfighter come face to face with death. In this study it's aimed to indicate the roots of the Spaniard's affection for bullfighting. As in 20th century Spanish poetry bullfights theme and image of death is cultivated rather frequently, we'll take Lorca's poem Lament for Ignacio Sánchez Mejías as the study object and we'll intend to analyze this elegy in the aspects of Ignacio's bullfighter figure, the expression of death and mourning and also the symbolical images drawn by Lorca. 

Geology, petrology, U-Pb (SHRIMP) geochronology of the Morrinhos granite - Paragua terrane, SW Amazonian craton: implications for the magmatic evolution of the San Ignacio orogeny

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Franca, Ohana; Ruiz, Amarildo Salina; Sousa, Maria Zelia Aguiar de, E-mail: ohana.geo@gmail.com, E-mail: asruiz@gmail.com, E-mail: mzaguiar@terra.com.br [Universidade Federal de Mato Grosso (UFMT), Cuiaba, MT (Brazil). Instituto de Ciencias Exatas e da Terra. Dept. de Geologia Geral; Batata, Maria Elisa Froes, E-mail: elisabatata@bol.com.br [Universidade Federal de Mato Grosso (UFMT), Cuiaba, MT (Brazil). Grupo de Pesquisa em Evolucao Crustal e Tectonica; Lafon, Jean-Michel [Universidade Federal do Para (GEOCIAM/UFPA), Belem, PR (Brazil). Inst. Nacional de Cencia e Tecnologia de Geociencias da Amazonia

2014-09-15

Morrinhos granite is a batholith body that is slightly elongated in the NNW direction and approximately 1,140 km{sup 2} long; it is located in the municipality of Vila Bela da Santissima Trindade of the state of Mato Grosso, Brazil, in the Paragua Terrane, Rondonian-San Ignacio Province, in the SW portion of the Amazonian Craton. This intrusion displays a compositional variation from tonalite to monzogranite, has a medium to coarse inequigranular texture and is locally porphyritic; biotite is the predominant mafic in one of the facies, and hornblende is predominant in the other, with both metamorphosed into the green schist facies. The studied rocks characterize an intermediate to acidic sequence that was formed by a subalkaline magmatism; the series is alkali-calcic to metaluminous to slightly peraluminous, and the rocks evolved through fractioned crystallization mechanisms. The structural data show two deformation phases represented by penetrative foliation (S{sub 1}) and open folds (D{sub 2}), and both phases were most likely related to the San Ignacio Orogeny. The geochronological (U-Pb SHRIMP) and isotopic (Sm-Nd) investigations of these rocks indicated a crystallization age of 1350±12Ma, T{sub DM} of approximately 1.77 Ga and εNd{sub (1.35}) with a negative value of -2.57, suggesting that their generation was related to a partial melting process of a Paleoproterozoic (Statherian) continental crust. The results herein indicate that the Morrinhos granite was generated in a continental magmatic arc in a late- to post-orogenic stage of the San Ignacio Orogeny, and it can be recognized as belonging to the Pensamiento Intrusive Suite. (author)

Vicente Ignacio Imperial Digueri y Trejo : ingeniero militar, marino, urbanista y arquitecto del siglo XVIII

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Juan Torrejón Chaves

1989-01-01

Full Text Available Nacido en Oran el 28 de junio de 1745, fueron sus padres Ignacio Imperial Digueri, oriundo de Cartagena y destinado, a la sazón, como oficial en el Regimiento de Infantería de esta plaza norteafricana, donde alcanzó el grado de comandante de su segundo batallón —puesto que desempeñaba cuando ocurrió su muerte, el 5 de junio de 1769—, y Paula Trejo Monroy y Salcedo, natural de Badajoz, quien falleció con posterioridad a mayo de 1781, posiblemente en la ciudad de Cartagena. Otros hijos del matrimonio fueron: Antonio, Juan Bautista —que se ordenó sacerdote del Orden de Mínimos de San Francisco de Paula—, Manuel, Luisa y Teresa.

Propiedad y empresa minera en la Mesa centro-norte de México Guanajuato, San Luís Potosí y Zacatecas, 1880-1910 /

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Gámez Rodríguez, Moisés

2005-01-01

Consultable des del TDX Títol obtingut de la portada digitalitzada En la tesis se abordan los procesos de integración y diferenciación sobre la propiedad y la empresa en la Mesa Centro-norte de México (Guanajuato, San Luis Potosí y Zacatecas) circunscritos en el contexto nacional e internacional, durante el periodo de 1880-1910. La hipótesis general es que la demanda internacional de metales preciosos y de minerales industriales estimuló la producción, la creación de un marco institucio...

Presencia de Patógenos en Almácigos y Semilla de Chile (Capsicum annuum L.) en Aguascalientes y Zacatecas, México

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Velásquez-Valle, Rodolfo; Amador-Ramírez, Mario Domingo; Medina-Aguilar, María Mercedes; Lara-Victoriano, Faustino

2007-01-01

Un muestreo realizado en municipios de Aguascalientes y Zacatecas, México, indicó que el 88.4% de los almácigos tradicionales de chile presentaron daños por secadera temprana (damping-off); el área dañada osciló de 1 a 15%. Los hongos Fusarium spp., Rhizoctonia spp. y Alternaria spp. fueron identificados en la superficie de semilla de diversos tipos de chile, así como en plántulas enfermas del mismo cultivo. La fumigación del suelo y la desinfección de la semilla son llevadas a cabo solamente...

Evaluation of radon in hot spring waters in Zacatecas State, Mexico

International Nuclear Information System (INIS)

Favila R, E.; Lopez del Rio, H.; Davila R, I.; Mireles G, F.

2010-10-01

It is well know that radon is a potent human carcinogen. Because of the health concern of radon exposure, concentrations of 222 Rn were determined in ten hot spring water samples from the Mexican state of Zacatecas. The thermal water is collected in pools and used mainly for recreational purposes. In addition to radon level, the water samples were characterized for temperature, conductivity, and ph. Liquid scintillation spectrometry was used to measure 222 Rn and its decay products by mixing directly an aliquot of water with a commercial liquid scintillation. All measurements were carried out using a liquid scintillation counter (Wallac 1411). The water temperature ranged from 28 to 59 C, while the ph varied from 7.2 to 9.0, and the water conductivity was between 202.4 and 1072 μS/cm. The 222 Rn concentration varied in the range 3.9-32.6 Bq/L. In addition, the risk to radon exposure was assessed by considering three -real and possible- radon exposure scenarios: 1) ingestion of bottled thermal water, 2) direct ingestion of thermal water; and 3) vapor inhalation. The annual effective dose calculated for ingestion of bottled thermal water was 0.010-0.083 mSv/yr; for ingestion of water was 0.65-5.47 mSv/yr; and for inhalation was 0.28-2.81 mSv/yr. (Author)

José Ignacio Barraquer Moner. Un maestro de España en América

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Alberto Mayor Mora

2017-06-01

Full Text Available Fragmento.En 1987, a sus setenta y un años de edad, en la cima del reconocimiento mundial como uno de los gigantes de la oftalmología del siglo XX, José Ignacio Barraquer Monet echó una mirada atrás buscando las claves de su éxito:"En el tomo para pulir las córneas están resumidos todos los hobbies que yo tenía de joven, como la mecánica, los tornos, las emisoras de radio que fabricábamos, y los conocimientos de física y de química y de biología, porque mi casa era como un parque zoológico. Mi padre tenía mucha afición a los leones y tigres y serpientes: toda clase de animales teníamos en casa. Allí nacieron una serie de aficiones que luego se han ido profesionalizando".Barraquer Monet extrajo de una divertida infancia y de un medio polifacético y retador toda la inspiración y toda la libertad para desplegar su voluntad y crear el campo oftalmológico universalmente conocido como la Cirugía Refractiva, en cuyos conceptos se desenvuelven hoy todos los cirujanos oftalmológicos y cuyo instrumental y técnicas quirúrgicas con la marca de la escuela Barraquer son reconocidos en cualquier parte del mundo.José Ignacio Barraquer Monet trasluce al final de su existencia la satisfacción de haber realizado todo aquello que en el fondo de su corazón deseó por encima de cualquier cosa. Que su vida haya tenido un sentido para él mismo dependió de la realización de sus deseos, configurados desde la niñez y fijados paulatinamente según el entramado social que le correspondió afrontar.

Geochemistry and Nd-Sr isotopic signatures of the Pensamiento Granitoid Complex, Rondonian-San Ignacio Province, eastern precambrian shield of Bolivia: petrogenetic constraints for a mesoproterozoic magmatic arc setting;Geoquimica e assinaturas Nd-Sr do Complexo Granitoide Pensamiento, provincia Rondoniana-San Ignacio, pre-cambriano de Bolivia Oriental: caracterizacao petrogenetica de um arco magmatico no mesoproterozoico

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Matos, Ramiro, E-mail: rmatoss@igc.usp.b [Universidad Mayor de San Andre (UMSA), La Paz (Bolivia, Plurinational State of). Inst. de Investigaciones Geologicas y del Medio Ambiente; Teixeira, Wilson; Bettencourt, Jorge Silva, E-mail: wteixeir@usp.b, E-mail: jsbetten@usp.b [Universidade de Sao Paulo (IGC/USP), SP (Brazil). Inst. de Geociencias. Dept. de Mineralogia e Geotectonica; Geraldes, Mauro Cesar, E-mail: geraldes@uerj.b [Universidade do Estado do Rio de Janeiro (FG/UERJ), RJ (Brazil). Faculdade de Geologia

2009-07-01

The Pensamiento Granitoid Complex (PGC), located in the northern part of the eastern Precambrian shield of Bolivia, is tectonically assigned to the Rondonian-San Ignacio Province (1.55 - 1.30 Ga) of the Amazonian Craton that is made up by Archean and Proterozoic provinces. The Proterozoic ones result from accretionary orogens that become successively younger south westwards, such as the Rondonian/San Ignacio (1.37 - 1.32 Ga) and the Sunsas orogenies (1.20 - 1.00 Ga). The PGC crops out mainly on the 'Paragua craton' bounded to the south by the Sunsas belt, and composed of granites and subvolcanic terms, and subordinately of syenites, granodiorites, tonalites, trondhjemites and diorites as orogenic representatives of the Rondonian/San Ignacio Orogeny, intrusive into the Lomas Maneches (ca. 1.68 Ga) and Chiquitania (ca. 1.7 Ga) complexes. Thirteen whole rock chemical analyses for major, trace and REE elements were performed for the La Junta, San Martin, Diamantina, Porvernir, San Cristobal, Piso Firme plutons of the PGC. The negative trends of MgO, Al{sub 2}O{sub 3} and CaO contents with increasing SiO{sub 2} suggest that fractional crystallization played an important role in the petrogenesis of the investigated rocks. The data also indicate a mainly peraluminous, sub-alkaline to high-K calc-alkaline composition, and fractionated LREE/HREE patterns are consistent with a magmatic arc character for these plutons. SHRIMP U-Pb zircon ages of the La Junta and San Martin syn- to late-kinematic plutons are 1347 {+-} 21 Ma and 1373 {+-} 20 Ma respectively, and the Sm-Nd T{sub DM} model ages are between 1.9 to 2.0 Ga, while {epsilon}{sub Nd(1330)} values range from +1.8 to -4.3, respectively. In addition, the late- to post-kinematic Diamantina pluton yields SHRIMP U-Pb zircon age of 1340 {+-} 20 Ma, and variable Sm-Nd T{sub DM} model ages (1.6 to 1.9 Ga) and {epsilon}{sub Nd(1330)} values (+0.4 to -1.2) that are comparable with previous results found for other coeval

Ignacio Ellacuría’s thinking on University’s social function

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José Sols Lucia

2017-04-01

Full Text Available In the convulsive historical context of El Salvador (Central America during the 1970s and 1980s, characterized by popular uprisings against the postcolonial socioeconomic system, the ten year Salvadorean civil war and the mass murder of civilians, Ignacio Ellacuría rethinks the University’s social function based on his experience as Head of the Department of Philosophy and, then, as Rector of the Central American University (UCA in El Salvador. His conception of the university, and in particular of universities of Christian inspiration, is that of an institution devoted to an in-depth analysis of historical reality ―in terms of the human habitat as well as the social, economic and political reality― and the transformation of this reality towards a future society respectful of the dignity of every human being. In this sense, the university, understood in the broadest sense ―teaching, research and social mobility―, represents the theoretical moment of historical liberation movements. However, to fulfill this goal the university contribution should not only be academic but should, also, be firmly rooted in reality, and not external to the political framework or merely a place for subversive unrest.

Relationship among resistance to the insulin and obesity in Zacatecas population; Relacion entre resistencia a la insulina y obesidad en poblacion de Zacatecas

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Zapata R, P G; Badillo A, V., E-mail: vbadillocren@hotmail.com [Universidad Autonoma de Zacatecas, Unidad Academica de Ciencias Nucleares, Laboratorio de Radioinmunoanalisis y Quimioluminiscencia, Cipres No. 10, Fracc. La Penuela, 98068 Zacatecas (Mexico)

2012-10-15

The Zacatecas State (Mexico) occupies the second national place in obesity, although the adults have a bigger incidence every time exist more minors that present this problem which can facilitate other illnesses like diabetes and hypertension. The first resistance references to the insulin were made by Himsworth in 1936, when he referred to insulin-resistant and insulin-sensitive diabetics. The resistance to the insulin, as event pathogen primary in the diabetes mellitus type 2 is derived of the obesity, what implies a subnormal biological response to the actions of the hormone in the carbohydrates, proteins and lipids metabolism. In this work was carried out a study of insulin levels for the Radioimmunoassay method in 40 patients with evident obesity and 8 patients with normal weight in order to evaluate these levels according to their age and abdominal circumference. Three correlations were made for both groups (obese and normal), the first correlation indicates the size of the waist with the insulin quantity, according to the arrangements that shows the correlation is bigger in all; what means that there is a great dependence among the size of the waist and the insulin quantity that contain. The second correlation is the age with the insulin that although is small, indicates that the age does not important for the insulin quantity that is secreted. The third and last realized correlation was of the age with the waist, and according to the results correlation also exists, but this is not significant as the first correlation. Therefore is considered existent the relationship between obesity and resistance to the insulin. (Author)

José Ignacio Moreno. Un teólogo peruano. Entre Montesquieu y Joseph de Maistre

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Victor Samuel Rivera

2013-01-01

Full Text Available José Ignacio Moreno es uno de los fundadores de la independencia del Perú. En calidad de tal acompañó el proyecto del General rioplatense José de San Martín de transformar en 1822 la monarquía peruana en un reino independiente. Pero, a diferencia de la multitud de sus contemporáneos, la historiografía apenas lo presenta como un circunstante en la epopeya de la emancipación, de quien no se conserva ni un retrato. El motivo es la extraña adherencia de este personaje a las ideas del ultramontanismo y su temprana cercanía con la obra del contrarrevolucionario francés Joseph de Maistre. Un discurso monárquico extremista en 1822 lo colocaría como el fundador involuntario del Perú como República.

Factores de riesgo para cáncer cervicouterino en mujeres de Zacatecas Risk factors for cervical cancer in women from Zacatecas, Mexico

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Maura Sara Castañeda-Iñiguez

1998-07-01

Full Text Available Objetivo. Conocer las características sociodemográficas reproductivas y de conducta sexual de las usuarias del Programa de Prevención y Control del Cáncer Cervicouterino e identificar los factores de riesgo para dicha patología. Material y métodos. Se hizo un estudio de casos y controles en usuarias del Programa de Prevención y Control del Cáncer Cervicouterino en Zacatecas; los casos fueron todas aquellas pacientes con diagnóstico corroborado por histopatología de displasia severa, cáncer in situ e invasor (251 en total, referidas a la Clínica de Displasias (dependiente del mismo programa, durante el bienio 1993-1995. Los controles se seleccionaron aleatoriamente de entre la población con citología exfoliativa negativa y que era usuaria de dicho programa. Se seleccionó un control por caso, y se le pareó por edad y por la fecha en que se realizó la citología del caso. Resultados. El riesgo de neoplasia cervical aumentó con el número de gestaciones (RM 5.2, IC95% 2.6-10.5 para aquellas mujeres con más de 12 gestaciones en relación con las que tenían menos de tres. Por otra parte, el riesgo de neoplasia cervical se incrementa en la medida en que aumentan los partos. Así, las mujeres que tuvieron 12 o más partos corren un riesgo cinco veces superior que aquellas que dieron a luz menos de tres veces (RM 5.1, IC95% 2.4-11.0. El inicio de las relaciones sexuales en edad temprana está asociado al riesgo de neoplasia cervical; así, las mujeres que postergaron el inicio de sus relaciones sexuales hasta después de los 19 años tuvieron dos veces menos riesgo que quienes comenzaron antes de los 15 años. El uso de anticonceptivos hormonales aumentó el riesgo de cáncer cervical en relación con las mujeres que utilizaron anticonceptivos no hormonales (RM 1.9, IC 95% 1.3-3.4. Conclusiones. El estudio de factores de riesgo para neoplasia cervical en la población usuaria del programa de prevención y control mostró que las

[Modelling science. The ceroplastics of Ignacio Lacaba in the Colegio de Cirugía de San Carlos, Madrid].

Science.gov (United States)

Morente, Maribel

2016-01-01

Models made of wax had enormous diffusion in the anatomical teaching of the 18th century. It transcended the borders of a science that impregnated with scientific knowledge the artistic expression of beauty. Based on this premise, the San Carlos Royal College of Surgery created in Madrid a large collection of anatomical models, which is currently maintained by the Javier Puerta Anatomy Museum in the School of Medicine at Madrid Complutense University. The collection began in 1786 with Ignacio Lacaba, the first dissector of the Surgery College of Madrid, whose artistic sensibility and deep knowledge of anatomy contributed and facilitated harmonization between the work of the wax sculptors and language and anatomical expression.

Geochemistry and Nd-Sr isotopic signatures of the Pensamiento Granitoid Complex, Rondonian-San Ignacio Province, eastern precambrian shield of Bolivia: petrogenetic constraints for a mesoproterozoic magmatic arc setting

International Nuclear Information System (INIS)

Matos, Ramiro; Teixeira, Wilson; Bettencourt, Jorge Silva; Geraldes, Mauro Cesar

2009-01-01

The Pensamiento Granitoid Complex (PGC), located in the northern part of the eastern Precambrian shield of Bolivia, is tectonically assigned to the Rondonian-San Ignacio Province (1.55 - 1.30 Ga) of the Amazonian Craton that is made up by Archean and Proterozoic provinces. The Proterozoic ones result from accretionary orogens that become successively younger south westwards, such as the Rondonian/San Ignacio (1.37 - 1.32 Ga) and the Sunsas orogenies (1.20 - 1.00 Ga). The PGC crops out mainly on the 'Paragua craton' bounded to the south by the Sunsas belt, and composed of granites and subvolcanic terms, and subordinately of syenites, granodiorites, tonalites, trondhjemites and diorites as orogenic representatives of the Rondonian/San Ignacio Orogeny, intrusive into the Lomas Maneches (ca. 1.68 Ga) and Chiquitania (ca. 1.7 Ga) complexes. Thirteen whole rock chemical analyses for major, trace and REE elements were performed for the La Junta, San Martin, Diamantina, Porvernir, San Cristobal, Piso Firme plutons of the PGC. The negative trends of MgO, Al 2 O 3 and CaO contents with increasing SiO 2 suggest that fractional crystallization played an important role in the petrogenesis of the investigated rocks. The data also indicate a mainly peraluminous, sub-alkaline to high-K calc-alkaline composition, and fractionated LREE/HREE patterns are consistent with a magmatic arc character for these plutons. SHRIMP U-Pb zircon ages of the La Junta and San Martin syn- to late-kinematic plutons are 1347 ± 21 Ma and 1373 ± 20 Ma respectively, and the Sm-Nd T DM model ages are between 1.9 to 2.0 Ga, while ε Nd(1330) values range from +1.8 to -4.3, respectively. In addition, the late- to post-kinematic Diamantina pluton yields SHRIMP U-Pb zircon age of 1340 ± 20 Ma, and variable Sm-Nd T DM model ages (1.6 to 1.9 Ga) and ε Nd(1330) values (+0.4 to -1.2) that are comparable with previous results found for other coeval plutons. The Porvenir, San Cristobal and Piso Firme plutons

The relationship between carbonate facies, volcanic rocks and plant remains in a late Palaeozoic lacustrine system (San Ignacio Fm, Frontal Cordillera, San Juan province, Argentina)

Science.gov (United States)

Busquets, P.; Méndez-Bedia, I.; Gallastegui, G.; Colombo, F.; Cardó, R.; Limarino, O.; Heredia, N.; Césari, S. N.

2013-07-01

The San Ignacio Fm, a late Palaeozoic foreland basin succession that crops out in the Frontal Cordillera (Argentinean Andes), contains lacustrine microbial carbonates and volcanic rocks. Modification by extensive pedogenic processes contributed to the massive aspect of the calcareous beds. Most of the volcanic deposits in the San Ignacio Fm consist of pyroclastic rocks and resedimented volcaniclastic deposits. Less frequent lava flows produced during effusive eruptions led to the generation of tabular layers of fine-grained, greenish or grey andesites, trachytes and dacites. Pyroclastic flow deposits correspond mainly to welded ignimbrites made up of former glassy pyroclasts devitrified to microcrystalline groundmass, scarce crystals of euhedral plagioclase, quartz and K-feldspar, opaque minerals, aggregates of fine-grained phyllosilicates and fiammes defining a bedding-parallel foliation generated by welding or diagenetic compaction. Widespread silicified and silica-permineralized plant remains and carbonate mud clasts are found, usually embedded within the ignimbrites. The carbonate sequences are underlain and overlain by volcanic rocks. The carbonate sequence bottoms are mostly gradational, while their tops are usually sharp. The lower part of the carbonate sequences is made up of mud which appear progressively, filling interstices in the top of the underlying volcanic rocks. They gradually become more abundant until they form the whole of the rock fabric. Carbonate on volcanic sandstones and pyroclastic deposits occur, with the nucleation of micritic carbonate and associated production of pyrite. Cyanobacteria, which formed the locus of mineral precipitation, were related with this nucleation. The growth of some of the algal mounds was halted by the progressive accumulation of volcanic ash particles, but in most cases the upper boundary is sharp and suddenly truncated by pyroclastic flows or volcanic avalanches. These pyroclastic flows partially destroyed the

El clero y el delito de proposiciones en Zacatecas: los errores manifestados en los sermones, siglos XVI y XVII

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Georgina Quiñones Flores

2014-04-01

Full Text Available El delito de proposiciones consistía en las expresiones que refl ejaban puntos contrarios con la doctrina de la Iglesia católica. Por ello, pertenecía a la jurisdicción del Santo Ofi cio, que recibió denuncias incluso contra el clero por cometer esta transgresión, sobre todo durante los sermones, por lo que se cree que causaban confusión entre los oyentes. Pero ¿realmente provocaban escándalo entre la población o solo entre los eclesiásticos?, ¿acaso se trataba de errores de entendimiento por la poca instrucción de los predicadores?, o ¿se usaba el púlpito para expresar los confl ictos de la Iglesia? A estas preguntas se les dará respuesta en este texto, que se ubica en Zacatecas en los siglos XVI y XVII.

Relationship among resistance to the insulin and obesity in Zacatecas population

International Nuclear Information System (INIS)

Zapata R, P. G.; Badillo A, V.

2012-10-01

The Zacatecas State (Mexico) occupies the second national place in obesity, although the adults have a bigger incidence every time exist more minors that present this problem which can facilitate other illnesses like diabetes and hypertension. The first resistance references to the insulin were made by Himsworth in 1936, when he referred to insulin-resistant and insulin-sensitive diabetics. The resistance to the insulin, as event pathogen primary in the diabetes mellitus type 2 is derived of the obesity, what implies a subnormal biological response to the actions of the hormone in the carbohydrates, proteins and lipids metabolism. In this work was carried out a study of insulin levels for the Radioimmunoassay method in 40 patients with evident obesity and 8 patients with normal weight in order to evaluate these levels according to their age and abdominal circumference. Three correlations were made for both groups (obese and normal), the first correlation indicates the size of the waist with the insulin quantity, according to the arrangements that shows the correlation is bigger in all; what means that there is a great dependence among the size of the waist and the insulin quantity that contain. The second correlation is the age with the insulin that although is small, indicates that the age does not important for the insulin quantity that is secreted. The third and last realized correlation was of the age with the waist, and according to the results correlation also exists, but this is not significant as the first correlation. Therefore is considered existent the relationship between obesity and resistance to the insulin. (Author)

El ejercicio de la maternidad de las mujeres profesionales académicas de la Universidad Autónoma de Zacatecas

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Laura Hernández Martínez

2017-01-01

Full Text Available La representación mental que se tiene de la maternidad en México, por lo regular, gira en torno a la idea de una mujer dedicada con devoción a sus hijos, sin embargo la historia demuestra que esto no siempre ha sido. La mujer contemporánea ha integrado otras actividades a su vida tales como la educación y el trabajo remunerado colocado a la maternidad en otro lugar. La presente investigación utilizó una metodología cuantitativa para lo cual diseñó un cuestionario validado a través alfa de Cronbach, que buscó identi car las representaciones sociales de la maternidad (creencias, mitos, imaginarios, ejercicio de la maternidad de las mujeres académicas de la Universidad Autónoma de Zacatecas (UAZ, Los resultados de esta investigación reportan que las mujeres-madres de la UAZ, disfrutan de sus hijos, organizan sus tiempos y actividades diarias, cambiado la idea de madres totalmente buenas, en mujeres reales, rompiendo con los mitos arraigados en la mujer mexicana, de total de- voción a los hijos. Concluyendo que las mujeres madres Universitarias se encuentran insertas en un mundo social, laboral, y cultural que no limita el ejercicio y disfrute de la maternidad, sino que, por el contrario, se complementa con nuevas actividades que han integrado a su vida.Palabras clave: Maternaje, Representaciones sociales, Mitos e imaginarios.Abstract the mental representation of maternity that exists in Mexico usually revolves around the idea of a woman that is dedicated with devotion to her children; furthermore history shows that this is not always the case. e contemporary woman has inte- grated other activities to her life such as education and paid work, placing maternity in a di erent place. e present investiga- tion utilizes a quantitative methodology for which a valid questionnaire was designed through alfa of Cronbach, which looked to identify the social representations of the maternity (beliefs, myths, imaginaries, exercise

SOBRE O MÉTODO DA TEOLOGIA DA LIBERTAÇÃO NOS 20 ANOS DO MARTÍRIO DE IGNACIO ELLACURÍA

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Francisco de Aquino Júnior

2009-01-01

Full Text Available Este artigo se insere no contexto da celebração dos 20 anos do martírio de Ignacio Ellacuría, seus companheiros Jesuítas e duas mulheres, Elba e Celina, na Universidade Centro-americana de El Salvador. Em primeiro lugar, procura mostrar o vínculo entre teologia e martírio na vida de Ellacuría: entregou sua vida no labor intelectual e foi assassinado por causa do conteúdo e das consequências desse mesmo labor. Em segundo lugar, aborda um de seus aportes teológicos mais originais e fecundos: o método da teologia da libertação (problematização, orientação ou direção fundamental e estrutura básica: elementos constitutivos em unidade dinâmico-operativa. Por fim, convoca a uma memória teológico-martirial, enquanto atualização em nossa vida e atividade intelectual-teológica de sua entrega aos pobres e oprimidos deste mundo. ABSTRACT: This article is part of the celebration of the 20th anniversary of the martyrdom of Ignacio Ellacuría, his fellow Jesuits and two women, Elba and Celina, at the University of Central America in El Salvador. First, the article attempts to show the link between theology and martyrdom in the life of Ellacuría: he dedicated his life to the intellectual apostolate and was murdered because of the content and consequences of that labor. Secondly, it addresses one of his most original and fruitful theological contributions: the method of liberation theology (questioning, fundamental orientation or direction and basic structure: constitutive components in dynamic operational unity. Finally, the article summons a theological, martyrdom memory, while updating in our life and intellectual-theological activity the surrender to the poor and oppressed of this world.

Estimation of the hydrogen flux from a PEM electrolyzer, based in the solar irradiation measured in Zacatecas Mexico

Energy Technology Data Exchange (ETDEWEB)

Duron-Torres, S.M.; Villagrana-Munoz, L.E.; Garcia-Saldivar, V.M.; Escalante-Garcia, I.L. [Univ. Autonoma de Zacatecas, Zacatecas (Mexico). Unidad Academica de Ciencias Quimicas; Arriaga-Hurtado, L.G. [Centro de Investigacion y Desarrollo Tecnologico en Electroquimica, Pedro Escobedo (Mexico)

2010-07-15

The current cost of obtaining hydrogen from electrolyzers is higher than the cost of producing fossil fuels. However, with advances in technology and greater use of alternative energy sources, the cost of electrolytic hydrogen production may decrease to the point of being competitive. This study calculated how much hydrogen can be produced in a typical polymer exchange membrane (PEM) electrolyzer. Local solar irradiation measurements were carried out from November 2007 to April 2008 at the Campus Siglo 21 Solarimetric Station at Zacatecas University in Mexico. The mean irradiation measured was 6.6 kW-h per m{sup 2}. Based on the solar data obtained at the station, the hydrogen produced by a typical solar-hydrogen (SH) system was evaluated. The study showed that an important quantity of hydrogen as an energy vector could be obtained from solar radiation. April was determined to be the month of maximum hydrogen production. The lowest hydrogen production was in November. The data obtained during this study can be used to evaluate the solar renewable energy resource expressed as hydrogen production. 19 refs., 1 tab., 4 figs.

Petrogenesis, U-Pb and Sm-Nd geochronology of the Furna Azul Migmatite: partial melting evidence during the San Ignacio Orogeny, Paragua Terrane, SW Amazon Craton

Energy Technology Data Exchange (ETDEWEB)

Nascimento, Newton Diego Couto do; Ruiz, Amarildo Salina; Pierosan, Ronaldo; Lima, Gabrielle Aparecida de; Matos, Joao Batista; Lafon, Jean-Michel; Moura, Candido Augusto Veloso, E-mail: newtongeologia@hotmail.com, E-mail: asruiz@gmail.com, E-mail: ronaldo.pierosan@yahoo.com.br, E-mail: gabilimagel@gmail.com, E-mail: lafonjm@ufpa.br, E-mail: prof.jmatos@gmail.com, E-mail: candido@ufpa.br [Universidade Federal do Para (GEOCIAM/UFPA), Belem, PA (Brazil). Instituto Nacional de Ciencia e Tecnologia de Geociencias da Amazonia

2016-11-01

The Furna Azul Migmatite is a ∼10 km{sup 2} complex located in Pontes e Lacerda city, Mato Grosso, Brazil. It belongs to Paragua Terrane, limit with Rio Alegre Terrane, southeast of San Ignacio Province, in Amazon Craton. It consists of transitional metatexites with amphibolite enclaves and dioritic injections. The rocks were divided in residuum rich and leucosome rich; both have three deformation phases marked by folded stromatic layers affected by spaced foliation and metamorphosed in amphibolite facies, represented by garnet, biotite, sillimanite, and by the clinopyroxene in the enclaves. The metamorphic retrograde to greenschist is marked by formation of chlorite, muscovite and prehnite. Residuum-rich metatexites show higher CaO and Na{sub 2}O contents, separating them from K{sub 2}O, Ba and Rb enriched transitional metatexites. U-Pb on zircon and Sm-Nd whole-rocks dating indicates that the residuum-rich metatexite crystallized at 1436 ± 11 Ma, with a T{sub DM} age of 1.90 Ga and ε{sub Nd(1.43)} of -0.54, whereas the dioritic injection crystallized at 1341,7 ± 17 Ma with a T{sub DM} age of 1.47 Ga and ε{sub Nd(1.34)} of 3.39. These results indicate that the Furna Azul Migmatite protolith was formed during the San Ignacio Orogeny and was reworked during the same orogeny, as basement for collisional to post-magmatic granites from Pensamiento Intrusive Suite. (author)

El ajuste o desajuste de las prácticas normativas en Ignacio Ellacuría: hacia una nueva dimensión de lo normativo /

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Senent, Juan Antonio

2011-08-01

Full Text Available Abstract: This work provides an analysis of adjustment or disadjustment of human rights from Ignacio Ellacuría thesis. We must first place this analysis in the critical context that animatesit, the horizon of historical praxis. From there, a rationale for its adjustment in relation to human praxis is proposed, as well as a critical study of the role such adjustment or maladjustment of regulatory schemes currently plays in the overall regulatory process within the social practices in the contemporary civilization stage.In turn, we conduct an analysis of the struggle to articulate other regulatory schemes that respond more tightly to the demands of justiceagainst others and nature.Resumo: Este trabajo realiza un análisis sobre el ajuste o desajuste de los derechos humanos a partir de la tesis de Ignacio Ellacuría. Se trata primero de ubicar este análisis en el contexto crítico que lo anima, el horizonte de la praxis histórica. Desde ahí se propone una fundamentación del ajuste en su relación con la praxis humana, así como el estudio crítico del papel que ese ajuste o desajuste de los esquemas normativos juega actualmente en el conjunto del procesonormativo en el seno de las prácticas sociales en la presente fase civilizatoria. A su vez, se aborda un análisis de la lucha por articular otros esquemas normativos que respondan más ajustadamentea las exigencias de la justicia frente a los otros y a la naturaleza.

La huella de San Ignacio de Loyola en Manresa, ¿otra oportunidad perdida para el turismo religioso?

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Joan Carles Llurdés i Coit

2016-01-01

Full Text Available Los intentos de la ciudad de Manresa para conseguir un mejor posicionamiento turístico no han fructificado y sigue estancada en un estadio de desarrollo turístico poco consolidado. La última iniciativa planteada por su ayuntamiento (proyecto “Manresa 2022” pretende recuperar la figura de San Ignacio de Loyola aprovechando que en ese año se celebrará el V centenario de la estancia de este personaje en la ciudad y que fue aquí donde tuvo sus experiencias místicas. Sin embargo, a pesar de que Manresa es centro de peregrinaje de jesuitas, esto no se ha traducido en un movimiento turístico significativo. En este texto se abordan las dificultades para hacer que el turismo religioso se convierta en un verdadero motor económico y también en un instrumento que contribuya a la revitalización del patrimonio y regeneración de ciertos espacios urbanos.

Lichens as possible agents of sandstone deterioration in Jesuitic ruins of San Ignacio Miní (Misiones Province, Argentina

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Rosato, V. G.

2010-09-01

Full Text Available The ruins of San Ignacio Miní, in NE Argentina, Misiones Province, included by the UNESCO in the list of World Heritage in 1984, were built in the 18th century by the Guarani people under the supervision of the Jesuite Congregation. The ruins are located in a tropical weather zone, exposed to extreme conditions of heat and humidity affecting the rocks used in its construction. These rocks are identified as siliceous sandstones, mainly formed by rounded to subrounded clasts, with scarce angulose particles, containing 96% quartz. Weather characteristics encourage the growth of vascular plants as well as algae and mosses and other organisms that damage materials. Among these, there are 18 lichen species (belonging to 18 genera, 8 foliose, 3 fruticose and 7 crustose. The damaging action of these lichens has been observed through SEM observations and EDAX microanalysis of rock samples colonized by Caloplaca sp. and Buellia sp.

Incluidas en la lista de Patrimonio Mundial por la UNESCO, las ruinas de San Ignacio Miní, en el NE de Argentina, provincia de Misiones, fueron construidas en el siglo XVIII por pobladores guaraníes supervisados por la Compañía de Jesús. Las ruinas se encuentran en una zona de clima tropical, expuestas a condiciones extremas de calor y humedad que alteran a las rocas empleadas en su construcción. Estas rocas se identifican como areniscas silíceas, formadas por clastos redondeados a sub-redondeados, con escasas partículas angulosas, con un contenido de 96,0% cuarzo. Las características del clima favorecen el desarrollo tanto de plantas vasculares como también de musgos, algas y otros organismos capaces de dañar a los materiales. Entre éstos se incluyen 18 especies de líquenes (pertenecientes a 18 géneros, 8 foliosos, 3 fruticosos y 7 crustosos. Las observaciones con SEM y los microanálisis EDE de muestras de roca colonizadas por Caloplaca sp. y Buellia sp sugieren que estos líquenes ejercen una acci

Adoption of Agricultural Conservation Practices in the Ignacio Agramonte Cooperative of Credits and Services (CCS, Nuevitas, Camaguey

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Arelys Valido Tomé

2016-09-01

Full Text Available The adoption of sustainable technologies, like Agriculture Conservation Practices in drought-stricken suburban areas is a must for land sustainable management. In order to contribute with the inclusion of this technology at the Ignacio Agramonte CCS, in El Carmen, municipality of Nuevitas, Camaguey, Agricultural Extension tools were used, like systemic diagnostic and participatory orientation. The SWOT matrix was created after three workshops, where agricultural conservation practices were identified for adoption, based on actual conditions at the CCS. As a result, five key problems were identified: lack of water for irrigation, saline waters, saline soils, use of inappropriate management technologies, deforestation and poor training in agriculture. The most critical impact found in the matrix was in Weaknesses - Threats (81.3%. Furthermore, local farmers, inhabitants and public officials agreed on the use of agricultural extension tools to provide positive elements and an effective way to help increase motivation and knowledge about agricultural conservation technology, as an alternative to mitigate the degradation state of lands at the CCS.

Incidence of organochlorine pesticides and the health condition of nestling ospreys (Pandion haliaetus) at Laguna San Ignacio, a pristine area of Baja California Sur, Mexico.

Science.gov (United States)

Rivera-Rodríguez, Laura B; Rodríguez-Estrella, Ricardo

2011-01-01

We identified and quantified organochlorine (OC) pesticide residues in the plasma of 28 osprey (Pandion haliaetus) nestlings from a dense population in Laguna San Ignacio, a pristine area of Baja California Sur, Mexico, during the 2001 breeding season. Sixteen OC pesticides were identified and quantified. α-, β-, δ- and γ-hexachlorocyclohexane, heptaclor, heptachlor epoxide, endosulfan I and II, endosulfan-sulfate, p,p'-DDE, p,p'-DDD, aldrin, dieldrin, endrin, endrin aldehyde, and endrin ketone were the OCs found in the plasma of nestlings, ranging from 0.002 to 6.856 pg/μl (parts per billion). No differences were found in the concentration of pesticides between genders (P > 0.05). In our work, the concentrations detected in the plasma were lower than those reported to be a threat for the species and that affect the survival and reproduction of birds. The presence of OC pesticides in the remote Laguna San Ignacio osprey population is an indication of the ubiquitous nature of these contaminants. OCs are apparently able to travel long distances from their source to the study area. A significant relationship between hemoglobin and mean corpuscular hemoglobin concentrations and OC concentrations were found suggesting that a potential effect on the health of chicks may exist in this osprey population caused by the OC, e.g. anemia. The total proteins were positively correlated with α-BHC, endosulfan I, and p,p'-DDD. It has been suggested that OC also affects competitive interactions and population status over the long term in vertebrate species, and our results could be used as reference information for comparison with other more exposed osprey populations.

The Mexican Assimilation: Colombia in the 1930s - The case of Ignacio Gómez Jaramillo

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Juanita Solano Roa

2013-07-01

Full Text Available During the 1930s in Colombia, artists such as Ignacio Gómez Jaramillo, took Mexican muralism as an important part of their careers thus engaging with public art for the irst time in the country. In 1936, Gómez Jaramillo travelled to Mexico for two years in order to study muralism, to learn the fresco technique and to transmit the Mexican experience of the open-air-schools. Gómez Jaramillo returned to Colombia in 1938 and in 1939 painted the murals of the National Capitol. Although Gómez Jaramillo’s work after 1939 is well known, his time in Mexico has been barely studied and very few scholars have analyzed the artist’s work in light of his Mexican experience. While in Mexico, Gómez Jaramillo joined the LEAR (La Liga de Escritores y Artistas Revolucionarios with whom he crated the murals of the Centro Escolar Revolución. These murals depict politically engaged images that, apparently, little had to do with his more historical work back in Colombia. This text proposes a careful reading of the artist’s work at the CER and a rereading of the National Capitol murals in light of a more politicized vision.

Ignacio Arellano y Carlos Mata, Vida y obra de Lope de Vega - José Florencio Martínez, Biografía de Lope de Vega. 1562-1635. Un friso literario del Siglo de Oro

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Enrico Di Pastena

2012-12-01

Full Text Available Review of Ignacio Arellano y Carlos Mata, Vida y obra de Lope de Vega, Homo Legens (Bibliotheca Homolegens, 63, Madrid, 2011, 334 pp. ISBN: 978-84-92518-72-2 y José Florencio Martínez, Biografía de Lope de Vega. 1562-1635. Un friso literario del Siglo de Oro, PPU, Barcelona, 2011, 783 pp. ISBN: 978-84-477-1114-7.

Adopción de prácticas de Agricultura de Conservación en la Cooperativa de Créditos y Servicios (CCS Ignacio Agramonte, Nuevitas, Camagüey

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Arelys Valido Tomé

2016-09-01

Full Text Available La adopción de tecnologías sustentables como la Agricultura de Conservación en zonas de sequía extrema de la agricultura suburbana, constituye una necesidad para el manejo sostenible de tierras. Con el objetivo de contribuir a la adopción de esta tecnología en la CCS Ignacio Agramonte, localidad El Carmen, municipio Nuevitas, se utilizaron herramientas de la Extensión Agraria; como el Diagnóstico sistémico y la orientación participativa. Se realizaron tres talleres, donde quedó elaborada la matriz DAFO y se identificaron las prácticas de Agricultura de Conservación a adoptar según las condiciones reales de la CCS. Se obtuvo como resultado cinco problemas fundamentales: falta de agua para el riego, aguas salinas, suelos salinos, uso de tecnologías de manejo de suelo no apropiadas, deforestación y poca capacitación de los agricultores. El máximo impacto de la matriz DAFO se produce en el cuadrante Debilidades – Amenazas con un 81,3 %. Además se logró el reconocimiento de agricultores, pobladores y funcionarios locales, que el uso de las herramientas de extensión agraria, aportan elementos positivos y una vía eficaz que contribuye a elevar la motivación y los niveles de conocimientos acerca de la tecnología de agricultura de conservación como alternativa para mitigar el estado de degradación de la tierra en la CCS Ignacio Agramonte.

Evaluation of the increase in GH and IGF-1 and effectiveness in the treatment on Zacatecas population; Evaluacion del aumento en GH e IGF-1 y eficacia en el tratamiento en poblacion zacatecana

Energy Technology Data Exchange (ETDEWEB)

Gallegos F, P. I.; Badillo A, V., E-mail: perla_gf17@hotmail.com [Universidad Autonoma de Zacatecas, Unidad Academica de Estudios Nucleares, Laboratorio de Radioinmunoanalisis y Quimioluminiscencia, Cipres No. 10, Fracc. La Penuela, 98060 Zacatecas (Mexico)

2013-10-15

The acromegaly and gigantism are dysfunctions that are caused by hyper-secretion of growth hormone (GH) and of production in liver of growth factor similar to the insulin type 1 (IGF-1) mediated by the GH secretion. The secretor pituitary adenomas of GH are the main cause of the hyper-secretion. The acromegaly and gigantism are manifested respectively by acral alterations and extremities increase, and an excessive growth of the bones. Although a world prevalence of 40-60 cases by inhabitants million is registered, very few formal studies exist that confirm this number. According to the program Epiacro in Mexico is considered a prevalence of 13 cases by inhabitants million. In the Zacatecas State official statistical numbers are not had for these pathologies. Due to the few registrations that exist, or to the cases reported in Mexico, is necessary to evaluate patients with suspicion and with hyper-secretion diagnostic of GH, to contribute and/or to reinforce the health state and national statistics. In this work the GH and IGF-1 concentrations were measured on Zacatecas population to estimate the age range and sex with more probability of suffering this illness, and to evaluate the patients that have received some treatment to check their effectiveness verifying the GH and IGF-1 decrease and being able to obtain normal values. We register 26 patient cases with suspicion of GH hyper-secretion, of these 9 were affected by the illness. The hyper-secretion cases were presented with more frequency in half age adults, being affected in a same way as much men as women. To the end of the study only an affected patient concludes with the pharmacological treatment for the GH hyper-secretion control of a group of 5. (Author)

La fábrica de San Ignacio: patrimonio industrial en abandono en Aguascalientes [México]. Análisis, paisaje agrícola y reúso

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Alejandro Acosta Collazo

2011-12-01

Full Text Available La Fábrica de San Ignacio se ubica al poniente de la ciudad de Aguascalientes, México. Su fundación data del año de 1861 y funcionó durante la época del Porfirismo en México y durante la Revolución Mexicana, quedando en desuso en la primera mitad del siglo XX. El edificio es muestra del primer ejemplo de arquitectura derivada del fenómeno de industrialización en Aguascalientes. Es un edificio catalogado como monumento histórico que se encuentra en abandono total en la actualidad; sumergido en la zona agrícola más productiva del Valle de Aguascalientes. Su diseño original obedece al sistema de colonias industriales de mediados del siglo XIX, que implicaba tener disponible viviendas para los trabajadores de la fábrica, un modelo tipológico afrancesado en su plástica, sistemas adicionales con cuerpos de agua (necesarios para su funcionamiento y un manejo adecuado en la arquitectura de paisaje. El sitio de San Ignacio y el inmueble comienzan a tener una fuerte colisión con el desarrollo de la ciudad en sus diversas manifestaciones económicas, sociales y políticas, provocando el detrimento de edificaciones consideradas como monumentos, aunado a la incuria humana, propiciada por la falta de regulación y reglamentaciones que conlleva la pérdida de los valores históricos y artísticos de la ciudad de Aguascalientes. El artículo expone un análisis del medio físico natural y edificado; así como del sitio y del inmueble histórico; reflexiona sobre el conjunto y las condicionantes contextuales y paisajísticas; asimismo considera los elementos fundamentales para resolver la problemática de su conservación, basado en teorías consolidadas y vigentes.

Nivel de conocimiento y actitud materna relacionado al cumplimiento del calendario de vacunación del niño menor de un año. Hospital San Ignacio de Casma. 2016

OpenAIRE

Angulo Castillo, Aurea Patricia

2017-01-01

El presente estudio tuvo como objetivo: conocer la relación entre el nivel de conocimiento y actitud materna con el cumplimiento del calendario de vacunación del niño menor de un año del Hospital San Ignacio de Casma. La muestra constituida por 100 madres con niño menor de un año. Los datos se recolectaron a través de los instrumentos: cuestionario sobre el nivel de conocimiento materno, test de actitud sobre el cumplimiento del calendario de vacunación y la ficha de cumplimiento del calen...

Gramática descriptiva de la lengua española dirigida por Ignacio Bosque y Violeta Demonte publicada por Real Academia española, collección Nebrija y Bello. Madrid: Espasa Calpe, 1999

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Jasmina Markič

2001-12-01

Full Text Available La Gramatica Descriptiva de la Lengua Española es una obra muy extensa de 5351 paginas mas las paginas de introducción, relación de autores e índice de contenidos, publicada en tres volúmenes y dirigida por dos eminentes lingüistas españoles Ignacio Bosque Mufioz, Catedratico de Lengua Espafiola en la Universidad Complutense de Madrid y miembro de la Real Academia Espafiola, y Violeta Demonte Barreto, Catedratica de Lengua Espafiola en la Universidad Autónoma de Madrid.

La satisfacción de residentes con su colonia y el programa gubernamental Tu Casa en el estado de Zacatecas

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Jorge Ibarra Salazar

2016-01-01

Full Text Available El grado de satisfacción residencial, considerado como un indicador de nivel de vida, tiene como uno de sus componentes la satisfacción con la colonia de los individuos. En este artículo estimamos una serie de modelos para analizar el grado de satisfacción con la colonia de una muestra de hogares en el estado de Zacatecas. Las estimaciones nos permiten determinar si el programa federal de vivienda Tu Casa en ese estado, operado de 2004 a 2009, tuvo alguna influencia en el grado de satisfacción con la colonia, de acuerdo con la percepción de los residentes entrevistados. Encontramos evidencia de que el referido programa causó un efecto significativo en el grado de satisfacción del grupo de familias beneficiarias. Además de ese resultado, la estimación por mínimos cuadrados ordinarios muestra que el acceso vial, la contaminación ambiental, la percepción del valor de la casa y el tiempo de vivir en la vivienda influyen de forma significativa en el grado de satisfacción con la colonia. En los modelos estimados por probit y logit encontramos evidencia de que la seguridad pública y la posesión del inmueble también influyen en tal satisfacción.

Tipificación de un sistema integral de lechería familiar en Zacatecas, México

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Ricardo A. Sánchez Gutiérrez

2015-01-01

Full Text Available El objetivo fue determinar las características sociales, económicas, agrícolas y pecuarias de las unidades deproducción (UP en Monte Escobedo, Zacatecas. Se aplicaron 73 encuestas a productores de mayo a julio del 2011.El cuestionario se dividió en dimensiones sociales, económicas, agrícolas, de alimentación y reproducción, de manejoy sanidad, y suelo. El desarrollo de la metodología consistió en ponderación de variables por cada dimensión, análisisde componentes principales y una matriz de posicionamiento. Los tres primeros componentes principales explicaronel 72 % de la variación total. El 82 % de los responsables de las UP son del sexo masculino, ambos sexos sabenleer y escribir, los ingresos provienen de la producción agrícola y pecuaria, generalmente por la venta de grano demaíz, becerro en pie, leche fresca y el queso tipo añejo. El primer grupo se caracterizó por alta producción de leche,78 L por día, y cuentan con maquinaria de alto nivel tecnológico. El segundo grupo con producciones de 74 L pordía, sin embargo no cuentan con maquinaria agrícola propia. El tercero tiene producciones de leche de 38 L por día,su maquinaria es propia, sin embargo realizan prácticas convencionales. El cuarto grupo se caracteriza por realizarprácticas convencionales, pero el 100 % de los productores dan valor agregado a la leche, al producir queso añejo.La tipificación de los productores mostró que los sistemas de producción son extensivos y su tendencia es haciala especialización, debido al potencial que tienen con la elaboración de queso añejo.

A psychology of liberation for Central America: the unfinished work of Ignacio Martín-Baró (1942-1989).

Science.gov (United States)

Gondra, José María

2013-01-01

On November 16, 1989 the world was shocked by the news of the assassination of six Jesuits at the campus of the Universidad Centro Americana José Simeón Cañas (UCA) in San Salvador, El Salvador. Among those murdered by government soldiers was Ignacio Martín-Baró, a PhD in social psychology from the University of Chicago who at that time was the Vice-Rector for Academic Affairs and Vice-President of the Interamerican Society of Psychology (SIP). Drawing on Martín-Baró's published writings and non-published academic papers and correspondence, this article traces the evolution of the Spanish-born Jesuit who became a leading authority among Latin American social psychologists. In particular, it analyzes his project of becoming a clinical psychologist under the influence of psychoanalysis, his critical social psychology aimed to "de-ideologize" the oppressed social classes of El Salvador, and his ultimate project of a psychology of liberation for Latin America. Martín-Baró's work came to a tragic end just when it began to bear fruit, but it stands as a testimony to a lifetime committed to the human values of democracy, social justice and service to society's poorest and most neglected.

Plant-based Complementary and alternative medicine used by breast cancer patients at the Hospital Universitario San Ignacio in Bogotá, Colombia.

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Marcela Mercado

2012-12-01

Full Text Available The present study estimates the frequency of the use of plant-based Complementary and Alternative Medicine (CAM by breast cancer patients. From June to December of 2011, a self-administered questionnaire was given to 404 breast cancer patients receiving outpatient therapy at the Javeriana Oncology Center of the Hospital Universitario San Ignacio in Bogotá. The prevalence of patient CAM use was 57%, out of which 76% was based on plants like anamú, aloe, red fruits and soursop. Sixty-five percent of the patients had a positive perception of using medicinal plants and 57% used them simultaneously with the oncologist recommended allopathic treatment. We concluded that the frequency of CAM use in breast cancer patients at the Javeriana Oncology Center is within the prevalence range reported worldwide, despite differences in CAM types and frequencies. The high rates of plant-based CAM use without physician consent, brings about the lack of assessment of the synergic or antagonistic effects of CAM therapies on the allopathic treatment of breast cancer and evaluation of the antitumor and immunomodulatory potential of the traditionally used plants.

Variación estacional del zooplancton del embalse Ignacio Allende, Guanajuato, México y su relación con el fitoplancton y factores ambientales

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Eugenia López- López

1999-12-01

Full Text Available Se estudiaron las comunidades planctónicas y los factores ambientales del embalse Ignacio Allende de julio de 1990 a junio de 1991. Se presentó una proliferación de cianofíceas en el verano coincidente con el mayor nivel de agua, seguido por la dominacia de bacilariofíceas en los meses fríos, en primavera con el incremento en la temperatura las cloroficeas alcanzaron sus mayores densidades. Las dinofíceas y euglenofíceas presentaron la menor riqueza específica. La proliferación de Anabaena variabilis en el verano y la alta frecuencia de Ceratium hirundinella, Aulacosseira granulata y Fragilaria crotonensis se asocian con cuerpos de agua tropicales eutróficos. Se encontraron 39 taxones zooplanctónicos, de los cuales Diaphanosoma birgei, Bosmina longirostris, Daphnia parvula, Diaptomus (Mastigodiaptomus montezumae, Acanthocyclops vernalis, Keratella cochlearis, Polyarthra vulgaris y Asplanchna priodonta, fueron persistentes en todo el ciclo. Un análisis de correspondencias canónicas mostró las relaciones que guardan los cambios en composición del zooplancton con las características físicas y químicas del embalse.The plankton communities and environmental factors of the Ignacio Allende reservoir were surveyed from July 1990 to June 1991. A total of 57 phytoplankton species were identified. There was a blue green algae bloom in the summer, simultaneously with highest water levels, followed by the dominance of diatoms in the coldest months (February and March. Chlorophyceans became dominant in the spring, consonant with highest temperature records. Bacillariophyceans and cyanophyceans had the greater species richness, while dinophyceans and euglenophyceans had the lowest values. The summer bloom of Anabaena variabilis and the abundance of Ceratium hirundinella, Aulacosseira granulata and Fragilaria crotonensis are associated with tropical eutrophic waters. The zooplankton was composed by 39 species, from these, Diaphanosoma birgei

Factores de riesgo para cáncer cervicouterino en mujeres de Zacatecas

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Castañeda-Iñiguez Maura Sara

1998-01-01

Full Text Available Objetivo. Conocer las características sociodemográficas reproductivas y de conducta sexual de las usuarias del Programa de Prevención y Control del Cáncer Cervicouterino e identificar los factores de riesgo para dicha patología. Material y métodos. Se hizo un estudio de casos y controles en usuarias del Programa de Prevención y Control del Cáncer Cervicouterino en Zacatecas; los casos fueron todas aquellas pacientes con diagnóstico corroborado por histopatología de displasia severa, cáncer in situ e invasor (251 en total, referidas a la Clínica de Displasias (dependiente del mismo programa, durante el bienio 1993-1995. Los controles se seleccionaron aleatoriamente de entre la población con citología exfoliativa negativa y que era usuaria de dicho programa. Se seleccionó un control por caso, y se le pareó por edad y por la fecha en que se realizó la citología del caso. Resultados. El riesgo de neoplasia cervical aumentó con el número de gestaciones (RM 5.2, IC95% 2.6-10.5 para aquellas mujeres con más de 12 gestaciones en relación con las que tenían menos de tres. Por otra parte, el riesgo de neoplasia cervical se incrementa en la medida en que aumentan los partos. Así, las mujeres que tuvieron 12 o más partos corren un riesgo cinco veces superior que aquellas que dieron a luz menos de tres veces (RM 5.1, IC95% 2.4-11.0. El inicio de las relaciones sexuales en edad temprana está asociado al riesgo de neoplasia cervical; así, las mujeres que postergaron el inicio de sus relaciones sexuales hasta después de los 19 años tuvieron dos veces menos riesgo que quienes comenzaron antes de los 15 años. El uso de anticonceptivos hormonales aumentó el riesgo de cáncer cervical en relación con las mujeres que utilizaron anticonceptivos no hormonales (RM 1.9, IC 95% 1.3-3.4. Conclusiones. El estudio de factores de riesgo para neoplasia cervical en la población usuaria del programa de prevención y control mostró que las

Producción y calidad de forraje de variedades de avena en condiciones de temporal en Zacatecas, México

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Ricardo A. Sánchez Gutiérrez

2014-01-01

Full Text Available Se evaluó la pro ducción, calidad y componentes de rendimiento de seis variedades de avena forrajera en Zacatecas. Los experimentos se establecieron en julio de 2011 y 2012 en el municipio de Monte Escobedo. El dise ño experimental fue bloques completos al azar con tres repeticiones, la densidad de siembra fue 120 kg ha -1 y dosis de fertilización de 60-40-00 de N, P 2 O 5 , K. La cosecha fue en estado fisiológico lechoso-masoso. En 2011 y 2012, La variedad Saía sobresalió ( P 0.05 entre variedades con un rango de 10.6 a 13.8 %. En los dos años de estudio Karma presentó las mejores características nutricionales: baja acumulación de fibra detergente neutr o (51 % y acida (33.4 y 35.3 %, valores altos en total de nutrientes digestibles (54 y 58 %, digestibilidad de la materia seca (60 y 62 %, valor relativo del forraje (110 y 113 y energía neta para lactación (1.4 y 1.34 Mcal/kg; P <0.05. Las variables asociadas de manera positiva con forraje seco fueron altura de planta (r=0.701, días a co secha (r=0.685 y proporción de tallo (r=0.629, y negativamente con proporción de espiga (r=-0.629. En calidad nut ricional Karma tuvo mejor valor forrajero. Saia es una buena alternativa para incrementar el rendimiento de forraje por hectárea.

Calymmian magmatism in the basement of the Jauru Terrain (Rondonian - San Ignacio Province), Amazon Craton: U-Pb and Sm-Nd geochemistry and geochronology

Energy Technology Data Exchange (ETDEWEB)

Fachetti, Frankie James Serrano; Costa, Ana Claudia Dantas da; Silva, Carlos Humberto da, E-mail: frankiefachetti@hotmail.com, E-mail: acdcosta@ufmt.br, E-mail: chsilva@ufmt.br [Universidade Federal de Mato Grosso (UFMT), Cuiaba, MT (Brazil). Instituto de Ciencias Exatas e da Terra

2016-11-01

The Taquarussu Orthogneiss and the Guadalupe Granodiorite, part of the Rondonian-San Ignacio Province basement, southwest of the Amazonian Craton, correspond to oriented bodies with a NW trend. The rocks show granodiorite composition with minor occurrences of coarse grained monzogranites consisting essentially of plagioclase, quartz, microcline, orthoclase and biotite. The accessory minerals are amphibole, titanite, garnet, apatite, epidote, zircon and opaque. The geochemical data indicate that the rocks are classified as granodiorites and monzogranites, with an intermediate to acid magmatism, sub-alkaline character, from the calc-alkaline to the high-K calc-alkaline series, with alumina ratios ranging from metaluminous to lightly peraluminous. The rocks were classified as generated in volcanic islands arc environment and the U-Pb data (SHRIMP zircon) show a concord age 1575 ± 6 Ma. The Sm-Nd model age (T{sub DM}) is 1.63 Ga with εNd (t = 1.57 Ga) ranging from -1.52 to +0.78. These data indicate that these rocks are probably a juvenile crust with a possible contamination of crustal rocks. (author)

Efecto tóxico del DDT, clordano y agua de la presa Ignacio Ramírez (México, sobre Daphnia magna (Crustacea: Daphnidae

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Laura Martínez-Tabche

1999-12-01

Full Text Available Actualmente en México son empleados los plaguicidas diclorodifeniltricloroetano (DDT y clordano (CLO para combatir la malaria y termitas. De 1990 a 1996 un total de 27 ton de DDT y 508 de CLO, en forma de productos técnicos, fueron importados. El objetivo de este estudio fue establecer una metodología para determinar el impacto ambiental que pueden producir estos compuestos sobre un embalse. El efecto tóxico del DDT y CLO fue evaluado sobre la actividad de la o-demetilasa (OD y del acetilcolinesterasa (AchA del cladócero Daphnia magna al exponerla a diferentes concentraciones de los insecticidas disueltos en el agua de tres sitios de la presa Ignacio Ramírez (PIR. El efecto del agua contaminada con los insecticidas sobre la actividad de la AChA y OD, así como la CL50, fueron utilizadas como indicadores de exposición para determinar los lugares más contaminadas de la PIR. Las características fisicoquímicas del agua así como la biodiversidad de los sitios en estudio de la presa fueron considerados. Los resultados obtenidos demuestran que la estación cercana a la compuerta exhibe un potencial de toxicidad, ya que las actividades enzimáticas fueron modificadas. Se sugiere utilizar las actividades de AchA y OD del cladócero para evaluar la toxicidad de un cuerpo de agua contaminado por insecticidas organoclorados.Chlorodiphenylnitrichloroethane (DDT and chlordane (CLO are currently used in Mexico to control malaria and termites. From 1990 to 1996 a total of 27 ton of DDT and 508 of CLO were imported. We establish a methodology to determine their environmental impact in a Mexican dam (Ignacio Ramírez. The toxic effect of DDT and CLO were evaluated on the o-demethylase (OD and acethycholinesterase activities (AchA of the cladoceran Daphnia magna exposed to different concentrations of the insecticides solved in water from three sites. Their effect on the AchA and OD activities, and so the CL50 were used as exposure bioindicators to

Consideraciones epidemiológicas en la prevalencia serológica de Brucella ovis en Zacatecas, México

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José Maria Carrera Chávez

2013-01-01

Full Text Available La epididimitis causada por Brucella ovis es una enfermedad de importancia en los rebaños ovinos de México. En los sementales afectados ocasiona baja productividad por la disminución de la fertilidad. El objetivo del estudio fue determinar la relevancia de diferentes posibles factores de riesgo (sistema de producción, densidad de sementales, total de vientres, relación hembras:macho, sistema de empadre y raza del semental sobre la prevalencia de B. ovis en Zacatecas, México. Se muestrearon 544 sementales, en 153 rebaños, provenientes de cuatro sistemas de producción. La respuesta serológica se evaluó mediante inmunodifusión doble en gel. El 18.6 % (101/544 de los sementales muestreados resultaron positivos y el 10.5 % (16/153 de los rebaños presentó al menos un semental positivo. El sistema semi-intensivo presentó la mayor prevalencia (P<0.05, con 86.1 % (87/101 de sementales positivos, el extensivo 11.9 % (12/101, el traspatio 2.0 % (2/101, y el intensivo no registró positivos. La prevalencia de B. ovis fue más alta en los rebaños más grandes, con mayor número de vientres y sementales. Los sementales de raza Katahdin mostraron mayor prevalencia (30.8 % (24/78 que los Rambouillet (14.0 % (18/129, Dorper (13.8 % (31/224 y Suffolk (13.8 % (8/58 (P<0.05. La prevalencia se relacionó más con el sistema de producción utilizado que con la relación hembras:macho o el sistema de empadre. Los resultados obtenidos sugieren que la cantidad de sementales en el rebaño es el factor de mayor relevancia en la prevalencia serológica de B. ovis (OR = 17.38, 95 % IC 7.76 a 38.94, aunque pudiera estar supeditado al sistema de producción.

Concentration of {sup 222}Rn in drinking water of the Zacatecas City, measured by liquid scintillation and associated dose; Concentracion de {sup 222}Rn en agua potable de la Ciudad de Zacatecas, medida por centelleo liquido y dosis asociada

Energy Technology Data Exchange (ETDEWEB)

Arevalo B, C. A.; Lopez del R, H.; Davila R, J. I.; Mireles G, F.; Pinedo V, J. L.; Rios M, C.; Saucedo A, S. A., E-mail: cesar_arevalob@outlook.com [Universidad Autonoma de Zacatecas, Unidad Academica de Estudios Nucleares, Cipres No. 10, Fracc. La Penuela, 98068 Zacatecas, Zac. (Mexico)

2017-09-15

A study was carried out to determine the concentration of {sup 222}Rn in samples of drinking water collected from different homes in the Zacatecas city, Mexico, whose main source of supply is groundwater. The {sup 222}Rn radioactive gas is a product of the decay series of {sup 238}U and is considered one of the main sources of natural radiation, since it contributes almost half of the radiation dose that a person will receive throughout his life. The {sup 222}Rn originates in the rocks of the aquifers and dissolves in the water, which is later integrated into the distribution network of the public supply that supplies the entire population. Exposure to ionizing radiation that {sup 222}Rn and its offspring emit can damage the DNA molecule, inducing the possible appearance of cancer. Has been demonstrated by various epidemiological studies carried out in uranium mines workers in different parts of the world, that this exposure increases the incidence of lung cancer, placing {sup 222}Rn and their offspring as the second main cause of this type of cancer, after smoking habit. Using the technique of solvent extraction of {sup 222}Rn in water and liquid scintillation spectrometry, water collected from 14 different households was sampled and analyzed. The average of the measured activity of {sup 222}Rn was 2.09 Bq/L and the annual effective dose per water intake attributable to that concentration of 6.07 mSv/a. The concentration of {sup 222}Rn in water and the annual effective dose are below 11 Bq/L and 50 mSv/a, such concentrations are the maximum limits established by the Unites States Environmental Protection Agency (US EPA) and the ICRP, respectively. The concentration of {sup 222}Rn that is transferred from the water to the air inside a house was also calculated and the radiation dose that this concentration causes by inhalation, being 0.209 Bq/m{sup 3} and 1,463 μ Sv a, respectively. (Author)

78 FR 9997 - Additional Designations, Foreign Narcotics Kingpin Designation Act

Science.gov (United States)

2013-02-12

... the President to impose sanctions against significant foreign narcotics traffickers and their... controlled by significant foreign narcotics traffickers as identified by the President. In addition, the..., Rio Grande, Zacatecas 98400, Mexico; Matamoros, Tamaulipas, Mexico; Rio Grande, Zacatecas, Mexico; DOB...

Concentration of 222Rn in drinking water of the Zacatecas City, measured by liquid scintillation and associated dose

International Nuclear Information System (INIS)

Arevalo B, C. A.; Lopez del R, H.; Davila R, J. I.; Mireles G, F.; Pinedo V, J. L.; Rios M, C.; Saucedo A, S. A.

2017-09-01

A study was carried out to determine the concentration of 222 Rn in samples of drinking water collected from different homes in the Zacatecas city, Mexico, whose main source of supply is groundwater. The 222 Rn radioactive gas is a product of the decay series of 238 U and is considered one of the main sources of natural radiation, since it contributes almost half of the radiation dose that a person will receive throughout his life. The 222 Rn originates in the rocks of the aquifers and dissolves in the water, which is later integrated into the distribution network of the public supply that supplies the entire population. Exposure to ionizing radiation that 222 Rn and its offspring emit can damage the DNA molecule, inducing the possible appearance of cancer. Has been demonstrated by various epidemiological studies carried out in uranium mines workers in different parts of the world, that this exposure increases the incidence of lung cancer, placing 222 Rn and their offspring as the second main cause of this type of cancer, after smoking habit. Using the technique of solvent extraction of 222 Rn in water and liquid scintillation spectrometry, water collected from 14 different households was sampled and analyzed. The average of the measured activity of 222 Rn was 2.09 Bq/L and the annual effective dose per water intake attributable to that concentration of 6.07 mSv/a. The concentration of 222 Rn in water and the annual effective dose are below 11 Bq/L and 50 mSv/a, such concentrations are the maximum limits established by the Unites States Environmental Protection Agency (US EPA) and the ICRP, respectively. The concentration of 222 Rn that is transferred from the water to the air inside a house was also calculated and the radiation dose that this concentration causes by inhalation, being 0.209 Bq/m 3 and 1,463 μ Sv a, respectively. (Author)

La técnica confesional como recurso narrativo. La transición y el cine "s" de Ignacio F. Iquino

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Alejandro Melero Salvador

2011-05-01

Full Text Available Este artículo estudia las películas eróticas de la Transición y analiza cómo el cine fue al mismo tiempo una consecuencia de los nuevos discursos en torno a la sexualidad y un instrumento para la expresión de los mismos. El artículo propone que, tras la apariencia descuidada del cine “S” se esconden aparatos narrativos que entroncan con formas tradicionales en la creación de discursos del sexo.Después de repasar la importancia de la narrativa confesional en el cine de la época, se toma como caso de estudio la obra de Ignacio F. Iquino para explorar cómo los tradicionales recursos narrativos confesionales se aplicaron a estar primeras representaciones fílmicas del sexo y cómo, muy a menudo, estos discursos dependieron de un aparato ideológico heredado del pasado, como por ejemplo la visión de la homosexualidad como algo traumático.Puesto que se trata de un estudio de narrativas fílmicas, se recurre a los guiones originales de las películas que se estudian. Constituyen un testimonio de primera mano y son imprescindibles para explicar las cuestiones y problemas que rodean la construcción de los nuevos discursos sexuales de la época. La investigación en archivos es, por lo tanto, fundamental para este trabajo y, hasta la fecha, no existen estudios académicos sobre la mayoría de las películas que se estudian.

La historia como ficción, una panorámica de la temática de la Revolución Mexicana en la obra de Ignacio Solares

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José Ávila Cuc

2011-01-01

Full Text Available Ignacio Solares, uno de los escritores vivos más importantes de México, aborda en su obra narrativa y dramática -entre otros tópicos-, el tema de la Revolución Mexicana y de personajes ligados a este hecho histórico. Esto sucede específicamente en sus novelas: Madero, el otro; La noche de Ángeles y Columbus; en las obras de teatro: El jefe máximo, El gran elector y Los mochos; y en el libro de cuentos Ficciones de la Revolución Mexicana en donde se recrean momentos claves de esta parte de la historia de México. El siguiente artículo analiza la intertextualidad temática de estas obras y la relación que guardan con la historia de la Revolución, así como su clasificación en lo que se conoce teóricamente como "novela" o "teatro histórico" y/o "texto de motivo histórico" a partir de la forma en que maneja el tema y la conflictividad de los personajes en las situaciones en que se ven inmersos.

Pramana – Journal of Physics | Indian Academy of Sciences

Indian Academy of Sciences (India)

Author Affiliations. M A Hernández-Ruíz1 2. Instituto de Física, Universidad Autónoma de San Luis Potosí, Av. Manuel Nava 6 Zona Universitaria 78290, San Luis Potosí SLP, México; Facultad de Ciencias Químicas, Universidad Autónoma de Zacatecas, Apartado Postal 585, 98060, Zacatecas, México ...

Fotogenia literaria en Carreteras secundarias, de Ignacio Martínez de Pisón: un viaje de ida y vuelta

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García-Abad García, M. Teresa

2005-06-01

Full Text Available The cinema, his synthetic character, and the dialogue that it establishes from the origin with other arts as literature, has not stopped offering a wide space of synergies for the adaptation practice and for the study of confluence areas between image and word. New generations of writers and directors propiciate across their work an opening that, beside integrating the expressive resources of the literature and the screen, consider the text as a productive and plural activity, capable of being spread in a stereophony that postpones its meaning in every process of reading, making it coincide with a practice of writing and creation. Ignacio Martinez de Pisón's literature contains sugerent keys to advance in the dialogue between literature and cinema in current Spanish narrative.El cine, su carácter sintético, y el diálogo que desde el origen establece con otras artes como la literatura, no han dejado de ofrecer un espacio amplio de sinergias para la práctica adaptativa y para la reflexión acerca de los ámbitos de confluencia entre la imagen y la palabra. Las generaciones de escritores y de directores más jóvenes propician a través de su obra una apertura que, además de integrar los recursos expresivos de la literatura y la pantalla, considera al texto como una actividad productiva y plural capaz de diseminarse en una estereofonía que aplaza su significado en cada proceso de lectura haciéndolo coincidir con una práctica de escritura y de creación. La literatura de Martínez de Pisón contiene claves sugerentes para desentrañar este diálogo entre literatura y cine en la narrativa española actual.

Análisis sistémico estructural sobre la negligencia intrafamiliar y sus consecuencias psicosociales, hacia niños y niñas de séptimo de básica de la escuela Ignacio Escandón de la ciudad de Cuenca; parroquia Yanuncay, durante el año lectivo 2011-2012

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Ordóñez Rivera, Marcia Fernanda

2016-01-01

Este trabajo de investigación tiene como título: Análisis sistémico estructural sobre la negligencia intrafamiliar y sus consecuencias psicosociales, hacia niños y niñas de séptimo de básica de la escuela Ignacio Escandón de la ciudad de Cuenca; parroquia Yanuncay, durante el año lectivo 2011-2012. El objetivo principal es detectar la negligencia intrafamiliar hacia los niños y niñas y sus consecuencias psicosociales, analizando las características y sus problemáticas para encontrar las mejo...

Gram-Negative Bacterial Wound Infections

Science.gov (United States)

2014-05-01

Bovine Tuberculosis in Cattle Farms in Zaria and Kaduna and Possible Transmission Through Milk P. N. Mbianga, V. J. Umoh, A. I. 0, K. C. A; Ahmadu...Pathogenic Escherichia coli R. M. Ramirez, M-X. Haro, P. Miranda, S-H. Sanchez, L-E. Vidales; Univ. Aut6noma de Zacatecas, Zacatecas, Mexico 517...isolates. Subsequently, five representative isolates were tested in murine pulmonary and Galleria mellonella models of infection. Infections with one strain

Perceptions of fishers to sea turtle bycatch, illegal capture and consumption in the San Ignacio-Navachiste-Macapule lagoon complex, Gulf of California, Mexico.

Science.gov (United States)

Aguilar-González, Myrna E; Luna-González, Antonio; Aguirre, Alonso; Zavala-Norzagaray, Alan A; Mundo-Ocampo, Manuel; González-Ocampo, Héctor A

2014-01-01

In this study, 10% of all registered fishermen in the coastal towns of Navachiste in Sinaloa, in northwestern Mexico, answered a survey designed to collect data on their perceptions of the following topics: the impact of turtle meat consumption; human health; bycatch; illegal turtle fishing; the illegal sea turtle market; the local economy; pollution; environmental education; the success of protective legislation; and sea turtle-based ecotourism. Perceptions were analyzed using the fuzzy logic method through classification into 5 fuzzy membership sets: VL, very low; L, low; M, moderate; H, high; VH, very high. The 9 topics generated decision areas upon applying fuzzy inference that revealed the membership level of the answers in each fuzzy set. The economic potential of sea turtle-based ecotourism and the economic profitability of the illegal turtle meat market were perceived as VL. Conservation legislation was perceived as H, although inefficiently applied due to corruption. Ecotourism and impacts on sea turtles were perceived as VL, because they were deemed unprofitable activities at the individual and community levels. Environmental education was perceived as L, because it centers on nesting, hatching and releasing turtles and is directed at elementary and middle-school students. While fishers perceive a serious negative impact of fishing activities on sea turtles in the San Ignacio-Navachiste-Macapule area, they do not see themselves individually as part of the problem. Achieving sea turtle conservation in this region requires: suitable ecotourism infrastructure, government investments in promotion, and studies to estimate the minimum number of tourists needed to assure profitability. © 2012 Wiley Publishing Asia Pty Ltd, ISZS and IOZ/CAS.

La transgresión genérica, emblema de la obra de Javier Marías, Enrique Vila-Matas e Ignacio Padilla

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Siridia Fuertes Trigal

2011-12-01

Full Text Available Nowadays, the genres are not as delimited as they use to be. In Javier Marias and Enrique Vila-Matas's novels, there is continuous reflection on the role of the author, as well as on life and literature (autobiography, essay and fiction. Padilla, a member of the group of ?Mexican Crack?, chooses both Spaniers as models. In both novels Amphitryon or Espiral de artillería there are commons traits with the novels of Marías and Vila-Matas. In this paper my aim is to analyse the relationship between Padilla and these Spanish writers workEn la época actual, los límites en la literatura han desaparecido, lo que se traduce en la ruptura de las fronteras genéricas y en la composición de obras híbridas que participan de todos los géneros. Tanto la obra de Vila-Matas como la de Javier Marías se nos presentan como una continua y trabada reflexión acerca del papel del autor en la creación literaria o, lo que en parte viene a ser lo mismo, acerca de las relaciones entre vida y literatura, entre autobiografía, ensayo y ficción. El mexicano Ignacio Padilla, miembro del autodenominado grupo del Crack mexicano, ha tomado como maestros del hibridismo genérico a estos dos autores españoles, y muestra de ello es la presencia en novelas como Amphitryon o Espiral de artillería de rasgos inspirados en las novelas policíacas, ensayísticas, históricas e incluso sociales. En este trabajo analizaré los rasgos que identifican de forma clara la obra de Padilla con Javier Marías y el prolífico Enrique Vila-Matas en un continuo diálogo entre las dos orillas

Evaluación de la recuperación de la clase funcional y modificación de los parámetros ecocadiográficos y la morbimortalidad en pacientes con cardiopatía valvular mitral intervenidos en el Hospital San Ignacio

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Giovanny Ríos D

2013-04-01

Full Text Available Objetivo: describir los resultados funcionales y la morbimortalidad en pacientes con cardiopatía valvular mitral que fueron llevados a cirugía en el Hospital San Ignacio entre los anos 2005 a 2009. Métodos: se revisó el registro quirúrgico del servicio de Cirugía Cardiovascular del Hospital San Ignacio durante los anos descritos. A partir de éste se obtuvo información de los documentos de identidad de cada uno de los pacientes para acceder a la información de las historias clínicas. Se revisaron las historias clínicas de pacientes atendidos en el Hospital, durante el periodo comprendido entre enero de 2005 a octubre de 2009, con diagnóstico de cardiopatía valvular mitral al ingreso. A partir de esta documentación y de los datos del seguimiento se obtuvo la estadística. Resultados y conclusiones: la enfermedad valvular cardíaca es una patología frecuente, compleja, que demanda normas claras de evaluación y seguimiento, además de criterios adecuados para llevar al paciente a cirugía en el momento más oportuno, seleccionar el tipo de prótesis que mejor se ajuste a la edad y sopesar el riesgo del manejo anticoagulante tal como lo predicen los estudios internacionales. La edad promedio de los pacientes intervenidos en el Hospital San Ignacio está alrededor de los 60,4 anos. Las mujeres son la población más afectada por valvulopatía mitral. El mayor porcentaje de los pacientes atendidos proviene de Bogotá. La patología mitral más intervenida es la insuficiencia mitral en 74% de los casos. El manejo más frecuente es el cambio valvular mitral, con 58% de los casos, y de éstos con válvula mecánica en 55,5% de los casos. Las prótesis más utilizadas son las mecánicas y de éstas prevalecen las prótesis ONX en 59,8% sobre las mecánicas. Posterior a la cirugía es notable el cambio en la clase funcional I a II en la mayoría de los pacientes. La mejoría de la clínica no se ve representada en un cambio ecocardiogr

DHS Office of Health Affairs Chemical Defense Program Analyzes Subway Safety Against Chemical Terrorist Threats

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Center for Homeland Defense and Security

2012-01-01

Center for Homeland Defense and Security, OUT OF THE CLASSROOM In an article for the journal Domestic Preparedness, Joselito Ignacio examines how to protect subway riders from chemical attacks. Ignacio graduated from the Center for Homeland Defense and Security in...

The Genesis of Precious and Base Metal Mineralization at the Miguel Auza Deposit, Zacatecas, Mexico

Science.gov (United States)

Findley, A. A.; Olivo, G. R.; Godin, L.

2009-05-01

The Miguel Auza mine located in Zacatecas State, Mexico, is a vein-type polymetallic epithermal deposit hosted in deformed argillite, siltstone and, greywacke of the Cretaceous Caracol Formation. Silver-rich base metal veins (0.2 m to >1.5 m wide) are spatially associated with the NE-striking, steeply SE- dipping (70-80°) Miguel Auza fault over a strike length of 1.6 km and a depth of 460 m. A 2 km2 monzonitic stock located in the proximity of the mineralized zones, has previously been interpreted as the source of the mineralizing fluids. Four distinct structural stages are correlated with hydrothermal mineral deposition: (I) The Pre-ore stage is characterized by normal faulting, fracturing of host rock, and rotation of bedding planes. This stage consists of quartz, illite, chlorite, +/- pyrite alteration of sedimentary wall rocks. (II) The Pyrite-vein stage is associated with reverse-sense reactivation of early normal faults, dilation of bedding planes/fractures, and deposition of generally barren calcite + pyrite veinlets. (III) The Main-ore stage is related to the development of reverse-fault- hosted massive sulphide veins. During this stage three phases of mineral deposition are recorded: early pyrite and arsenopyrite, intermediate chalcopyrite, pyrite, arsenopyrite, and base metals, and late base metals and Ag-bearing minerals. Associated gangue minerals during the main ore stage are quartz, muscovite, calcite and chlorite. (IV) The Post-ore stage involves late NW-SE striking block faulting, brecciation and calcite veining. Later supergene oxidation of veins led to deposition of Fe-oxides and hydroxides, commonly filling fractures or replacing early-formed sulphide assemblages. The various vein types display classic epithermal textures including open space filling, banding, comb quartz and brecciation. The Ag-bearing minerals comprise pyrargyrite [Ag3(Sb,As)S3], argentotennantite [(Cu,Ag)10(Zn,Fe)2(Sn,As)4S13], polybasite-pearceite [(Ag,Cu)16(Sb,As)2S11], and

Dose levels in conventional X-rays

International Nuclear Information System (INIS)

Guerra M, J. A.; Gonzalez G, J. A.; Pinedo S, A.; Salas L, M. A.; Vega C, H. R.; Rivera M, T.; Azorin N, J.

2009-10-01

There were a series of measures in the General Hospital of Fresnillo in the X-ray Department in the areas of X-1 and X-2-ray rooms and in the neonatal intensive care unit 2, was determined the dose surface entry in eyes, thyroid and gonads for patients undergoing to X-ray study of chest Tele by thermoluminescent dosimetry. Five dosemeters were used in each one of the scans; so find the following dose ranges 20 + - 23 mGy to 350 + - 41 mGy. With the results obtained we can conclude that the procedures used and the equipment calibration is adequate. (Author)

Dose on the entrance surface of thyroid, crystalline lens and gonads during the chest X-rays studies; Dosis en la superficie de entrada de tiroides, cristalino y gonadas durante los examenes radiologicos de torax

Energy Technology Data Exchange (ETDEWEB)

Gonzalez G, R.; Guerra M, J. A.; Pinedo S, A.; Hernandez O, M.; Duran M, H. A.; Salas L, M. A.; Vega C, H. R. [Universidad Autonoma de Zacatecas, Unidad Academica de Estudios Nucleares, Calle Cipres No. 10, Fracc. La Penuela, 98000 Zacatecas (Mexico); Rivera M, T. [Centro de Investigacion en Ciencia Aplicada y Tecnologia Avanzada, IPN, Av. Legaria No. 694, Col. Irrigacion, 11500 Mexico D. F. (Mexico); Azorin N, J. [Universidad Autonoma Metropolita, Unidad Iztapalapa, Av. San Rafael Atlixco 186, 09340 Mexico D. F. (Mexico)], e-mail: rgg_df@hotmail.com

2009-10-15

There were a measurement series in General Hospital of Fresnillo in X-rays department in areas of X-1 and X-2 ray rooms and in a neonatal intensive care unit 2, the dose was determined on the entrance surface into eyes, thyroid and gonads for patients undergoing to X-rays study of tele chest by thermoluminescent dosimetry. 5 dosemeters were used in each of the scans, found the following dose ranges 20+{sub -} 23 {mu}Gy to 350 +{sub -} 41 {mu}Gy. With results we can conclude that the used procedures and the calibration equipment are adequate. (Author)

Imágenes Americanistas en el San Ignacio de Loxola, fundador de la compañía de jesús, poema Heroico (1666 de Hernando Domínguez Camargo

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Daniel Torres

1995-12-01

Full Text Available La lírica barroca colonial es un discurso poético mestizo en el cual se dan citas otros em­ blemas de la realidad americana y donde son también otras las unidades ideológico-cultura­les que contnbuyen al proceso de significación de los textos ("lo otro" en tanto en cuanto se aleja de los modelos europeos. Las imágenes americanistas se construyen con elementos propios de la cultura hispanoamericana en ciemes. El San Ignacio de Loyola, Fundador de Ia Compañía de Jesús, Poema heroico de Hernando Domínguez Camargo denota una preocupación del hablante lírico por la geografía y el paisaje americanos como una expresión de lo indiano versus los cánones del poema barroco europeo. La mención insistente de América y su efecto obsesivo en el discurso es el foco de análisis de este ensayo. Se trata de indagar acerca de su significación en la serie de octavas reales que es el Poema heroico para atisbar la intención del hablante lírico de dignificar el espacio americano como espacio no de calcos sino de originales. Dicho de otro modo: en este estudio se intenta dilucidar la tarea de los poetas coloniales de iniciar una distancia entre Europa y América, entre lo europeo y lo americano, como diferencias conciliatorias, pero diferencias en sí.

Integrated geomorphologic and GIS analysis for the assessment of erosion zones and its relationship with hazardous zones in the Zacatecas and Guadalupe quadrangles, Mexico

Science.gov (United States)

Escalona-Alcázar, F. d. J.; Escobedo-Arellano, B.; Castillo-Félix, B.; Carrillo-Castillo, C.; García-Sandoval, P.; Gurrola-Menchaca, L. L.; Núñez-Peña, E. P.; Esparza-Martínez, A.; Bluhm-Gutiérrez, J.; Guijarro-Rodríguez, C. J.

2012-04-01

The morphology of the Zacatecas and Guadalupe quadrangles is composed to the West by a NNE-SSW fault bounded range and to the East a valley cut by minor hills. The most important and fast growing cities in the state are located in that range. However, in urban development plans variables such as the geology and geomorphologic processes, as well as the land cover characteristics, are poorly taken into consideration. Due to the landscape modification the erosion agents, mainly water, removes loose materials that are either natural or artificial. The effects on the buildings and roads are fractures, slope instability, and rock falling. In this study we present a model that considers the detailed geologic mapping, the geomorphology, land use, vegetation, and the digital slope model scale 1:50 000. The geomorphologic parameters considered were: relief energy, dissection density, general dissection density, and maximum dissection depth. The location and internal characteristics of mapped talus deposits were the basis to define the erosion criteria. High erosion zones are located in slopes over 20° where the talus deposits initiate due to the relative abundance of loose debris. Medium erosion areas are located in slopes over 10° that downslope has progressive accumulation of sediments. While the low erosion zones are located in slopes ranging from 5° to 20° with almost flat lying beds. These parameters were analyzed in ArcGIS together with the digital slope model, detailed geology mapping, the land use cover, and the soil information. The results where verified in the range where the city has been growing in recent years. The soils all over the range are lithosols which are only 10 to 15 cm thick; while the vegetation is composed mainly of bushes and nopals. Even though both, vegetation and soil are not modified, the erosion effects in them are very slow regardless of their location. The faults located in high erosion zones facilitate rock falling mainly during the

ACTIVIDADES DOMÉSTICAS DURANTE LOS SIGLOS III -VIII D.C. EN EL VALLE DE POTRERILLOS (SAN IGNACIO-MENDOZA. UN ACERCAMIENTO DESDE LA OSTEOMETRÍA Y LA TECNOLOGÍA CERÁMICA Y LÍTICA / Domestic activities during the III-VIII centuries AD in Potrerillos Valley

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Alejandra Valeria Gasco

2011-12-01

Full Text Available San Ignacio, en el Valle de Potrerillos, fue habitado durante los siglos III-VIII D.C. por grupos humanos que construyeron hornillos y ocuparon casas semi-subterráneas. Constituye uno de los escasos registros sistemáticos de contextos domésticos para el valle. Se presenta y caracteriza el sitio mediante el análisis osteométrico de camélidos, la organización de la tecnología lítica y el análisis tipológico y morfo-funcional cerámico. Las diversas actividades domésticas desarrolladas combinaron la explotación de camélidos silvestres y domésticos, además de cultígenos. Los rasgos arquitectónicos y los patrones materiales del interior de la unidad habitacional, se relacionan con una ocupación anticipada de tipo permanente. La cerámica analizada fue asignada al estilo Agrelo-Calingasta del período Agro-alfarero Temprano-Medio de la arqueología regional. El asentamiento podría insertarse en un circuito de movilidad para el aprovechamiento de diversos recursos en ambientes de altura. Además se sugiere la participación en redes de intercambio, evidenciada por la presencia de cerámica similar a la de los complejos culturales que se desarrollaron en la vertiente occidental de Los Andes y por la identificación de un morfotipo de camélido especialmente grande, propicio para la realización de caravanas.   Palabras clave: Valle de Potrerillos; Período Agro-alfarero regional; Contexto Doméstico; Camélidos silvestres y domésticos; Redes de Intercambio.   Abstract San Ignacio, in the Valley of Portrerillos was occupied during the third to eighth centuries A.D. by groups that constructed pit ovens and occupied semi-subterranean houses. It is one of the few systematically recorded domestic contexts in the valley. The site is presented and characterized through the osteometric analysis of camelids, the organization of lithic technology, and typological and morphofunctional analyses of ceramics. Diverse domestic activities

Factores de riesgo cardiovascular según la etapa de cambio conductual en personal de enfermería

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Perla María Trejo Ortíz

2012-12-01

Full Text Available Introducción: Las enfermedades cardiovasculares son la principal causa de muerte en todo el mundo y son las causantes de discapacidad y gastos excesivos para su prevención y control. En México poco más de 87 mil personas han fallecido a causa de alguna enfermedad del corazón. Por lo anterior es importante comparar la prevalencia de factores de riesgo cardiovascular según la etapa de cambio conductual en que se encuentra el personal de enfermería, pues son el principal contacto de promoción de salud entre la población y por tanto quienes deben predicar con el ejemplo para lograr una educación primaria efectiva. Materiales y Métodos:El estudio fue descriptivo y comparativo, en una muestra aleatoria de 150 enfermeros(as del Hospital General en Fresnillo, Zacatecas, México. Se utilizó el instrumento VICORSAT y la Escala de evaluación del cambio de la universidad de Rho de Island. Se tomó peso, talla, presión arterial y circunferencia de cintura. Resultados: La edad promedio fue de 35.9 años (DE = 7.1, el 63.3% de los participantes era sedentario, el 22.7% fumaba, una minoría mencionó consumir diariamente refresco o comida rápida (18% y 8% respectivamente, 64.7% cursaba con sobrepeso u obesidad, el 39.3% tenía un alto riesgo para desarrollar enfermedad cardiovascular de acuerdo con el perímetro de la cintura, un 46% de los participantes tenía antecedentes familiares de diabetes y 52% de hipertensión. Únicamente el perímetro de la cintura mostró diferencias significativas según la etapa de cambio conductual, siendo aquellos que tenían una circunferencia menor los que se encontraron en etapa de mantenimiento (p <.05.Discusión y Conclusiones: La prevalencia de factores de riesgo cardiovascular modificables es alta entre el personal de enfermería. Resulta necesario que el personal identifique la presencia de factores de riesgo y que además esté dispuesto a generar cambios tendientes a

Expansión del Aedes aegypti a localidades rurales de Cajamarca

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Lucinda Troyes R

2006-07-01

Full Text Available Objetivos: Determinar la presencia, magnitud y expansión de Aedes aegypti en las localidades rurales de las provincias de Jaén y San Ignacio, departamento de Cajamarca. Materiales y métodos: Estudio transversal realizado entre abril y mayo de 2004, en 21 (100% localidades rurales ubicadas en las márgenes de la carretera Jaén-San Ignacio y al interior de ella, hasta en 90 minutos. Se inspeccionó recipientes de 1460 viviendas para la búsqueda de larvas y adultos del mosquito, se determinaron los índices aédicos, de recipiente y de Breteau. Resultados: Se demostró la presencia de Aedes aegypti en tres localidades rurales de la provincia de Jaén y en cuatro de la provincia de San Ignacio. Los índices aédicos variaron de 1,2 a 16,6%. Los recipientes infestados con mayor frecuencia fueron las llantas y los artículos en desuso. Conclusiones: Se reporta la expansión de A. aegypti en la tercera parte de localidades rurales de las provincias de Jaén y San Ignacio; esta expansión necesita ser más estudiada y considerada al implementarse las estrategias de prevención y control del dengue en la DISA Jaén, para evitar la aparición de brotes de dengue clásico, dengue hemorrágico, incluso fiebre amarilla urbana.

Um Professor de Paleontologia: Ignácio Brito (1938-2001)

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Diógenes de Almeida Campos

2001-01-01

11 Anuário do Instituto de Geociências - UFRJ Volume 24 / 2001 Um Professor de Paleontologia: Ignacio Brito (1938-2001) Diogenes de Almeida Campos Museu de Ciências da Terra - DNPM Ignacio Aureliano Machado Brito, nascido no Rio de Janeiro, em 29 de junho de 1938, filho de Gratuliano da Costa Brito e de Adelaide Machado Brito, realizou seus estudos de nível médio no Colégio Mallet Soares, tendo concluído os mesmos em 1956. Suas atividades profissionais foram desenvolvidas primeirament...

Hydrogeochemical investigation of six geothermal sites in Honduras, Central America

Energy Technology Data Exchange (ETDEWEB)

Goff, F.E.; Truesdell, A.H.; Grigsby, C.O.; Janik, C.J.; Shevenell, L.A.; Paredes, J.R.; Gutierrez, J.W.; Trujillo, Jr.; Counce, D.A.

1987-06-01

We conducted detailed hydrogeochemical investigations at six geothermal sites in western Honduras: Azacualpa, El Olivar, Pavana, Platanares, Sambo Creek, and San Ignacio. None of the sites is associated with Quaternary silicic volcanism, although El Olivar lies adjacent to a small Quaternary basalt field and Pavana is part of a belt of hot spring activity parallel to and 35 km east of the Central American volcanic arc. None of the sites contains acid-sulfate waters indicative of vapor-dominated conditions. Thermal fluids are characterized by pH between 7 and 10, Cl<125 mg/l, HCO/sub 3/>Cl, SO/sub 4/greater than or equal toCl, Bless than or equal to17 mg/l, Liless than or equal to4 mg/l, and Asless than or equal to1.25 mg/l. Stable isotope analyses of the water show that recharge to the geothermal systems generally occurs from areas of higher elevation adjacent to the sites. Tritium contents of apparently undiluted thermal fluids range from 0 to 0.4 T.U., indicating residence times of fluids in the systems of more than 500 y. Various geochemical indicators show that mixing of hot and cold end-member fluids occurs in the system at Platanares and, to a lesser degree, in the systems at San Ignacio and Azacualpa. No mixing is apparent in the fluids discharging at Pavana, Sambo Creek, or El Olivar. Boiling is the dominant process responsible for subtle geochemical variations at Azacualpa and, possibly, San Ignacio. Our best estimates of subsurface reservoir temperatures are 225/sup 0/C at Platanares, 190/sup 0/C at San Ignacio, 185/sup 0/C at Azacualpa, 155/sup 0/C at Sambo Creek, 150/sup 0/C at Pavana, and 120/sup 0/C at El Olivar. The estimated power output of the three hottest sites is 45 thermal megawatts at Platanares, 14 thermal megawatts at San Ignacio, and 13 thermal megawatts at Azacualpa.

Enfermedad de chagas en la Región Nororiental del Perú. I. Triatominos (Hemiptera, Reduviidae presentes en Cajamarca y Amazonas

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Abraham G Cáceres

2002-01-01

Full Text Available Objetivos: Conocer la diversidad de triatominos presentes en las provincias de San Ignacio y Jaén (Cajamarca y en Bagua, Condorcanqui y Utcubamba (Amazonas. Materiales y métodos: los triatominos fueron capturados de mayo 1995 a diciembre 2000 en el intra y peridomicilios de las viviendas de las provincias de San Ignacio (5 distritos y Jaén (10 distritos del departamento de Cajamarca, y en 5 distritos de Bagua, un distrito de Condorcanqui y en seis de Utcubamba (Amazonas. El muestreo fue de 08:00 a 19:00 horas con alambre de 30 cm de largo, pinzas largas y linterna de mano. Resultados: se capturaron 5567 triatominos pertenecientes a cinco especies. Panstrongylus herreri fue la especie más predominante (94%. 90% del total de triatominos fueron capturados en ambientes intradomiciliarios. Se reporta Rhodnius robustus por primera vez para Amazonas. Ejemplares de R. ecuadoriensis y R. robustus, fueron colectados en intradomicilios en porcentajes mínimos en Sallique, provincia de Jaén (Cajamarca y Nieva, provincia de Condorcanqui (Amazonas. Panstrongylus geniculatus fue colectado en intradomicilios. Se reporta en ciertas localidades de La Coipa, Huarango y Namballe (San Ignacio; así como en Bellavista y Santa Rosa (Jaén y en Aramango, Copallín e Imaza (Bagua; además, en Jamalca, Cajaruro y Bagua Grande (Utcubamba. Panstrongylus chinai, especie silvestre con tendencia a domesticarse, se encontró en Santa Rosa, Bellavista, Chontalí y San José del Alto (Jaén y en Namballe, San Ignacio, La Coipa y Chirinos (San Ignacio. También se encontró en Cajaruro y Bagua Grande (Utcubamba. 90% de P. herreri fueron colectados en el interior de las viviendas. Para Cajamarca se ha colectado en Pomahuaca, Pucará, San José del Alto, Pirias, Bellavista, Santa Rosa, La Coipa y Huarango; mientras que para Amazonas en Aramango, Parco, Bagua Grande, Cajaruro y El Milagro.

Cadena de valor turística y desarrollo local en el Amazonas: Implicaciones en el bienestar de la comunidad. Leticia (Colombia)

OpenAIRE

Pereiro, Xerardo

2017-01-01

Critical review of a book by Germán Ignacio Ochoa Zuluaga on the tourist value chain and the distribution of tourism benefits in a context of the Colombian periphery. The research work base of this publication has been made in Leticia, border area with Brazil and Peru. Reseña crítica de un libro de la autoría de Germán Ignacio Ochoa Zuluaga sobre la cadena de valor turística y la distribución de beneficios del turismo en un contexto de la periferia colombiana. El trabajo de investigación b...

First report of BLTVA phytoplasma in Capsicum annuum and Circulifer tenellus in Mexico

Science.gov (United States)

Pepper (Capsicum annuum) plants in Durango and Zacatecas, Mexico, in September and October, 2014, had small, chlorotic, curled leaves, plant stunting, and/or big bud symptoms characteristic of phytoplasma infection (Lee et al. 2004). Samples from symptomatic pepper fields included 33 collected near...

Determination of some heavy metals in wetlands by PIXE

International Nuclear Information System (INIS)

Ramirez O, J.; Rios M, C.

2008-01-01

In this work the results of the analysis are presented, using the PIXE technique (Proton Induced X-ray Emission), in soil samples of the El Bordo, Vetagrande, Zacatecas, before and after subjecting them to a lixiviation process for the recovering of gold, silver and mercury. This community is part of the mining region nearer to the Zacatecas city municipality, region in which the mining exploitation dates from the colonial time. During almost 350 years the 'yard benefit' method was used or amalgamation with mercury, process that besides having used big quantities of mercury, generated a great quantity of mineral waste calls 'mine wetlands', those that were accumulating, crawled by the rains, toward the streams that end in the prey 'The Pedernalillo'. The dispersion of wetlands them it has extended from the prey until the communities of Tacoaleche, Zoquite, Lampotal and El Bordo, embracing an approximate area of 16 x 2 Km 2 and forming with the course of the time an accumulated of several millions of tons. In order to determining if the process of recovery of gold, silver and mercury make soluble to other contained metals in these wastes, samples were gathered in an area of 600 m 2 in the community of The Border, Vetagrande, Zacatecas. Half of the samples were subjected to the lixiviation process in a local metal recovery plant and the other part was analyzed without processing. The analysis of both types of samples by means of the PIXE was carried out in the University of Arizona in Tucson. (Author)

Determination of some heavy metals in wetlands by PIXE; Determinacion de algunos metales pesados en jales por medio de PIXE

Energy Technology Data Exchange (ETDEWEB)

Ramirez O, J.; Rios M, C. [UAZ, 98160 Zacatecas (Mexico)

2008-07-01

In this work the results of the analysis are presented, using the PIXE technique (Proton Induced X-ray Emission), in soil samples of the El Bordo, Vetagrande, Zacatecas, before and after subjecting them to a lixiviation process for the recovering of gold, silver and mercury. This community is part of the mining region nearer to the Zacatecas city municipality, region in which the mining exploitation dates from the colonial time. During almost 350 years the 'yard benefit' method was used or amalgamation with mercury, process that besides having used big quantities of mercury, generated a great quantity of mineral waste calls 'mine wetlands', those that were accumulating, crawled by the rains, toward the streams that end in the prey 'The Pedernalillo'. The dispersion of wetlands them it has extended from the prey until the communities of Tacoaleche, Zoquite, Lampotal and El Bordo, embracing an approximate area of 16 x 2 Km{sup 2} and forming with the course of the time an accumulated of several millions of tons. In order to determining if the process of recovery of gold, silver and mercury make soluble to other contained metals in these wastes, samples were gathered in an area of 600 m{sup 2} in the community of The Border, Vetagrande, Zacatecas. Half of the samples were subjected to the lixiviation process in a local metal recovery plant and the other part was analyzed without processing. The analysis of both types of samples by means of the PIXE was carried out in the University of Arizona in Tucson. (Author)

Paternal Absence and International Migration: Stressors and Compensators Associated with the Mental Health of Mexican Teenagers of Rural Origin

Science.gov (United States)

Aguilera-Guzman, Rosa Maria; de Snyder, V. Nelly Salgado; Romero, Martha; Medina-Mora, Maria Elena

2004-01-01

Mexico-U.S. migration creates situations that may cause psychological distress. The purpose of this research project was to study the impact of father's physical absence due to international migration (FPAIM) on adolescent offspring of rural immigrants from Zacatecas, Mexico. Stressors and compensators were studied from the adolescent's…

Fulltext PDF

Indian Academy of Sciences (India)

Data were arranged according to the Mexican geological provinces, indicating for each province .... geochronologic studies and a unified plate tectonic Grenvillian age), the Xolapa terrane (XO ..... component to explain the relatively high Sr and Nd .... value (see figure 6) and apparently enlarge the Pac0c ..... Zacatecas, Zac.

Protocol for a prospective longitudinal study of risk factors for hypertension incidence in a Mexico City population: the Tlalpan 2020 cohort.

Science.gov (United States)

Colín-Ramírez, Eloisa; Rivera-Mancía, Susana; Infante-Vázquez, Oscar; Cartas-Rosado, Raúl; Vargas-Barrón, Jesús; Madero, Magdalena; Vallejo, Maite

2017-07-31

Systemic hypertension (HTN) is a common risk factor for cardiovascular disease. In Mexico, HTN prevalence has increased over time and is currently 31%. Nonetheless, information about the country's HTN incidence and its associated risk factors is scarce. Understanding this condition is a priority for identifying the scope of primary prevention. The main objective of this study is to evaluate the effect of traditional and non-traditional risk factors on the incidence of HTN in a cohort of healthy Mexico City residents under biannual follow-up for 10 years. A prospective longitudinal study is proposed in which clinically healthy residents of Mexico City between 20 and 50 years old will be recruited; the participants will be evaluated every 2 years over a period of 10 years or until they develop HTN. Evaluations regarding sociodemographic, clinical, anthropometric, biochemical, diet, physical activity, stress, sleep quality, alcohol and tobacco consumption factors will be performed. The participants will be recruited from the 16 municipalities of Mexico City through promotional strategies aimed at the community and will be clinically evaluated at a tertiary care institution, Instituto Nacional de Cardiología Ignacio Chávez (National Institute of Cardiology Ignacio Chavez), located in Mexico City, Mexico. Sample size estimated for this study is 3436, and the Cox proportional hazards model will be used to estimate HRs for the association between explanatory variables and HTN using both raw and adjusted data. This study was approved by the Institutional Bioethics Committee of the Instituto Nacional de Cardiología Ignacio Chávez (National Institute of Cardiology Ignacio Chavez) under number 13-802. Findings from this study will be disseminated through scientific papers and research conferences. © Article author(s) (or their employer(s) unless otherwise stated in the text of the article) 2017. All rights reserved. No commercial use is permitted unless otherwise

78 FR 70630 - Additional Designations, Foreign Narcotics Kingpin Designation Act

Science.gov (United States)

2013-11-26

... providing goods or services in support of, the international narcotics trafficking activities of a person... fax-on-demand service at (202) 622-0077. Background The Kingpin Act became law on December 3, 1999..., Zacatecas, Mexico; nationality Mexico; Tax ID No. 06796108238 (Mexico); C.U.R.P. LOHM611211HZSZRG11 (Mexico...

Study of the environmental radiation in Zacatecas City; Estudio de la radiacion ambiental en la Ciudad de Zacatecas

Energy Technology Data Exchange (ETDEWEB)

Quirino, L.L.; Mireles, F.; Davila, J.I.; Rios, C.; Lugo, J.F.; Pinedo, J.L.; Lopez, H.; Garcia, M.L.; Soriano, J.M. [Centro Regional de Estudios Nucleares, Universidad Autonoma de Zacatecas, Cipres 10, Fracc. La Penuela, 96068 Zacatecas (Mexico)

2000-07-01

A study of detection of environmental radiation in the inner of an office is presented and a comparison of the results is made when the facilities are closed or aired. The used method is based on radiation detection by means of Geiger-Mueller RM 60 and RM 70 detectors with the aid of a personal computer which provides a detection method of radiation in real time. The used method in this study is suggested to detect the variation of radiation in closed or aired environments and as a surveillance system of radiation levels. The obtained results are discussed and they are compared with those obtained in another places. (Author)

Hospital de La Misericordia, 6 de mayo de 1906 - 6 de mayo de 1981

Directory of Open Access Journals (Sweden)

Liborio Sánchez Avella

1981-07-01

Full Text Available El 6 de mayo de 1981 cumplió el Hospital de La Misericordia 75 años de haber iniciado sus labores. La idea de crear el Hospital se venía gestando desde comienzos de 1890. Obtuvo la Personería Jurídica el 23 de julio de 1897y el 25 de julio del mismo año colocó la primera piedra el Presidente de la República Miguel Antonio Caro. José Ignacio Barberi, su fundador, dejó un escrito en el cual relataba la historia de este Hospital. El mejor homenaje que se le puede hacer al Hospital y a José Ignacio Barberi, es transcribir las palabras que él dejó inéditas en 1940.

Effect of water purification process in radioactive content: analysis on small scale purification plants; Efecto del proceso de purificacion de agua en el contenido radiactivo: analisis en plantas purificadoras a pequena escala

Energy Technology Data Exchange (ETDEWEB)

Lopez del Rio, H.; Quiroga S, J. C.; Davila R, J. I.; Mireles G, F. [Universidad Autonoma de Zacatecas, Unidad Academica de Estudios Nucleares, Calle Cipres No. 10, Fracc. La Penuela, 98000, Zacatecas (Mexico)], e-mail: hlopez@uaz.edu.mx

2009-10-15

Water from small scale purification plants is a low cost alternative for consumers in comparison to the bottled commercial presentations. Because of its low cost per liter, the consumption of this product has increased in recent years, stimulating in turn the installation of purification systems for these small businesses. The purpose of this study was to estimate the efficiency of small scale purification systems located in the cities of Zacatecas and Guadalupe, Zacatecas, to reduce the radioactive content of water. It was measured the total alpha and beta activity in water samples of entry and exit to process, through the liquid scintillation technique. In general it was observed that the process is more efficient in removing alpha that beta activity. The fraction of total alpha activity removed varied between 27 and 100%, while between 0 and 77% of the total beta activity was removed by the analyzed plants. In all cases, the total radioactivity level was lower than the maximum permissible value settled by the official mexican standard for drinking water. (Author)

Effect of water purification process in radioactive content: analysis on small scale purification plants

International Nuclear Information System (INIS)

Lopez del Rio, H.; Quiroga S, J. C.; Davila R, J. I.; Mireles G, F.

2009-10-01

Water from small scale purification plants is a low cost alternative for consumers in comparison to the bottled commercial presentations. Because of its low cost per liter, the consumption of this product has increased in recent years, stimulating in turn the installation of purification systems for these small businesses. The purpose of this study was to estimate the efficiency of small scale purification systems located in the cities of Zacatecas and Guadalupe, Zacatecas, to reduce the radioactive content of water. It was measured the total alpha and beta activity in water samples of entry and exit to process, through the liquid scintillation technique. In general it was observed that the process is more efficient in removing alpha that beta activity. The fraction of total alpha activity removed varied between 27 and 100%, while between 0 and 77% of the total beta activity was removed by the analyzed plants. In all cases, the total radioactivity level was lower than the maximum permissible value settled by the official mexican standard for drinking water. (Author)

75 FR 38151 - Governors' Designees Receiving Advance Notification of Transportation of Nuclear Waste

Science.gov (United States)

2010-07-01

... hours: (518) 292- 2200, Fax: (518) 322-4978. North Carolina First Sergeant Shane S. Manuel, North.... Ignacio T. dela Cruz, D.V.M., Secretary, Same. Department of Lands & Natural Resources, Commonwealth of...

Molecular based assessment of genetic diversity of xoconostle ...

African Journals Online (AJOL)

aghomotsegin

2014-01-08

Jan 8, 2014 ... Xoconostle or acidic prickly pear is an important fruit in Mexico; it is produced by a ... study, we report for the first time the estimation of genetic diversity within a set ... demonstrates the high genetic variation among genotypes of .... O. leucotricha Salm-Dyck × O. joconostle F.A.C Weber Zacatecas Wild Stock.

Eesti joonisfilm taas edukas

Index Scriptorium Estoniae

2003-01-01

Riia I rahvusvahelisel animafilmide festivalil võitis "Kontsert porgandipirukale" parima animafilmi auhinna. Grand prix'i sai inglase Ignacio Ferreresi film "How to Cope With a Death". Žüriisse kuulus ka Rein Raamat

ARQUEOFAUNA DEL SITIO ARQUEOLÓGICO EL PIÑÓN, CULTURA BOLAÑOS, JALISCO, MÉXICO/Archaeofauna of the archaeological site “El Piñón”, Cultura Bolaños, Jalisco, México.

Directory of Open Access Journals (Sweden)

Bernardo Rodríguez Galicia

2012-11-01

Full Text Available La cultura Bolaños comprende diversas comunidades humanas que se asentaron en uno de los cañones que forman la Sierra Madre Occidental y se ubica, cronológicamente, entre el año 100 a.C. y llega al 1260 de nuestra era, extendiéndose desde el sur de Zacatecas hasta llegar a la desembocadura del río Grande de Santiago, en el centro de Jalisco, México. La base de su desarrollo fue el intercambio de artefactos por productos y materias primas que no existían en la región del occidente mexicano. Aquí el estudio arqueozoológico realizado con las colecciones de restos óseos obtenidos de las excavaciones efectuadas en el sitio arqueológico “El Piñón”, y su correspondiente interpretación, permitió reconstruir tanto el ambiente natural como el cultural suscitado en el pasado. La fauna identificada consistió, en un primer análisis preliminar, en poco más de 3333 especímenes óseos, entre huesos y dientes no modificados, y alterados por cocción, cremación o trabajados, los cuales correspondieron a más de 250 individuos, entre los que se pueden mencionar: conejos, liebres, ardillas, tuzas (topos, perros, pumas, linces, pecaríes, venados, guajolotes (pavos, patos, codornices y guacamayas verdes, entre otros vertebrados que son comunes al ambiente semiseco-templado que prevalece en la región de Zacatecas-Jalisco.   Abstract   The Bolaños culture is made up of many human communities that established in one of the western Sierra Madre canyons, Mexico. Their occupations are chronologically dated between 100 years BC and 1260 years AD, and extended from southern Zacatecas to the mouth of the Rio Grande of Santiago, in the center of Jalisco, Mexico. The basis of their development was the exchange of artifacts for products and raw material that didn’t exist in the western Mexican region. Here, the archaeozoological study performed with the bone remains recovered in excavations from the “El Piñon” archaeological site is

Noticias médicas

Directory of Open Access Journals (Sweden)

Facultad de Medicina Revista

1943-01-01

Full Text Available Dos de diciembre, día panamericano de la salud /  La XI conferencia sanitaria panamericana. El doctor Montoya y Florez por José Ignacio Chala H. / Facetas de una voluntad por Gabriel Toro Villa

Bagatellid : maailm / Mailis Põld

Index Scriptorium Estoniae

Põld, Mailis

2006-01-01

Vürst Pierre'i Fondi muusikaauhinnale kandideerivad ka Toivo Tulev ja Helena Tulve. Pariisis esietendub Kaija Saariaho ooper "Adriana Mater". Pariisis renoveeritakse kuulus pleyeli saal. Hispaania heliloojast Atanasio Martin Ignacio Vicente Tadeo Francisco Peppegrin Martin y Soler ehk Hispaania Martinist

Bit keskus. (Uuendusliku Tehnoloogia Keskus) Inca, Mallorca, Hispaania / Alberto Campo Baeza

Index Scriptorium Estoniae

Campo Baeza, Alberto

1998-01-01

High-tech büroo kolmnurksel krundil industriaalpargis. Krundi sisemuses suletud alal "salaaed" apelsinipuudega. Seintel ronivad aromaatse lõhnaga taimed: jasmiinid, vistaaria, viinapuud. Konkurss 1995, ehitus 1997-1998. Arhitekt Alberto Campo Baeza (koos: L. Ignacio Aguirre Lopez, Anton Garcia Abril, Antonio Perez Villegas)

El estudio de las armas en el siglo XVIII: La Real Academia de la Historia y el hallazgo de una espada renacentista en Peñafiel

Directory of Open Access Journals (Sweden)

Soler del Campo, Álvaro

2001-12-01

Full Text Available In 1751 the king Fernando VI ordered to the Real Academia de la Historia a report on the fortuitous finding of a renaissance sword in Peñafiel (Valladolid. This report allows an approach to arms studies in the eighteenth century, when legendary arguments coexisted with a modern reasoning personalized by Ignacio de Luzán. It is also important an enclosed drawing as its accurate record.

En 1751 el rey Fernando VI solicitó a la Real Academia de la Historia un informe sobre el hallazgo fortuito de una espada renacentista en Peñafiel (Valladolid. Este informe permite aproximarnos al estudio de las armas durante el siglo XVIII, en el que las explicaciones legendarias conviven con planteamientos modernos personalizados por Ignacio de Luzán. Destaca igualmente por la incorporación de una detallada documentación gráfica de dicha espada.

Study of the environmental radiation in Zacatecas City

International Nuclear Information System (INIS)

Quirino, L.L.; Mireles, F.; Davila, J.I.; Rios, C.; Lugo, J.F.; Pinedo, J.L.; Lopez, H.; Garcia, M.L.; Soriano, J.M.

2000-01-01

A study of detection of environmental radiation in the inner of an office is presented and a comparison of the results is made when the facilities are closed or aired. The used method is based on radiation detection by means of Geiger-Mueller RM 60 and RM 70 detectors with the aid of a personal computer which provides a detection method of radiation in real time. The used method in this study is suggested to detect the variation of radiation in closed or aired environments and as a surveillance system of radiation levels. The obtained results are discussed and they are compared with those obtained in another places. (Author)

La política monetaria de objetivos de inflación en México /

OpenAIRE

Rodríguez Benavides, Domingo

2011-01-01

 tesis que para obtener el grado de Doctor en Economía, presenta Domingo Rodríguez Benavides ; asesor Ignacio Perrotini Hernández. 121 páginas : ilustraciones. Doctorado en Economía UNAM, Facultad de Economía, 2011

Estados fallidos, el cuestionamiento de la soberanía y la criminalización de los intereses nacionales

OpenAIRE

Ramos Vera, Mario

2010-01-01

Review Essay de: * GUTIÉRREZ DE TERÁN, Ignacio, Somalia, Clanes, Islam y terrorismo internacional, Los Libros de la Catarata, Madrid, 2007. * NAÍM, Moisés, Ilícito, Cómo traficantes, contrabandistas y piratas están cambiando el mundo, Debate, Barcelona, 2006.

77 FR 33561 - Unblocking of Specially Designated Nationals and Blocked Persons Pursuant to Executive Order 12978

Science.gov (United States)

2012-06-06

... On October 21, 1995, the President, invoking the authority, inter alia, of the International..., October 24, 1995) (the ``Order''). In the Order, the President declared a national emergency to deal with... Cotilla 2032, Piso 10, Colonia Americana, Guadalajara, Jalisco, Mexico; Ignacio Ramos Praslow 640...

Brazil joins IPPOG as a member

CERN Multimedia

'marcelloni, claudia

2018-01-01

ignacio de Bediaga Hickman from the Rede Nacional de Física de Altas Energias (RENAFAE) has signed the IPPOG MoU on behalf of Brazilian Particle physics outreach community. Marcelo Munhoz from University of Sao Paulo will be the official representative of Brazil in IPPOG

Listado anotado de Solanum L. (Solanaceae) en el Perú

DEFF Research Database (Denmark)

Särkinen, Tiina; Baden, Maria; Gonzáles, Paúl

2015-01-01

), and Canta and Huarochirí (Lima). Secondary centres of endemism with high concentrations of both endemics and near-endemics are found in San Ignacio and Cutervo (Cajamarca), Santiago de Chuco (La Libertad), Oxapampa (Pasco), and Cusco (Cusco). Current diversity patterns are highly correlated with collection...

[Fusarium species associated with basal rot of garlic in North Central Mexico and its pathogenicity].

Science.gov (United States)

Delgado-Ortiz, Juan C; Ochoa-Fuentes, Yisa M; Cerna-Chávez, Ernesto; Beltrán-Beache, Mariana; Rodríguez-Guerra, Raúl; Aguirre-Uribe, Luis A; Vázquez-Martínez, Otilio

Garlic in Mexico is one of the most profitable vegetable crops, grown in almost 5,451ha; out of which more than 83% are located in Zacatecas, Guanajuato, Sonora, Puebla, Baja California and Aguascalientes. Blossom-end rot caused by Fusarium spp is widely distributed worldwide and has been a limiting factor in onion and garlic production regions, not only in Mexico but also in other countries. The presence of Fusarium oxysporum has been reported in Guanajuato and Aguascalientes. Fusarium culmorum has been reported in onion cultivars of Morelos; and Fusarium proliferatum, Fusarium verticillioides, Fusarium solani and Fusarium acuminatum have been previously reported in Aguascalientes. The goal of this work was identifying the Fusarium species found in Zacatecas, Guanajuato and Aguascalientes, to assess their pathogenicity. Plants with disease symptoms were collected from hereinabove mentioned States. The samples resulted in the identification of: F. oxysporum, F. proliferatum, F. verticillioides, F. solani and F. acuminatum species; out of which Aguascalientes AGS1A (F. oxysporum), AGS1B (F. oxysporum) and AGSY-10 (F. acuminatum) strains showed higher severity under greenhouse conditions. Copyright © 2016 Asociación Argentina de Microbiología. Publicado por Elsevier España, S.L.U. All rights reserved.

Conference on the Neurobiology of Learning and Memory (3rd)

Science.gov (United States)

1988-09-23

TREATMENT IN PARADOXICAL SLEEP I. Portell-Cortes, DEPRIVATION PLATFORMS IN RATS . Norpdo-Bernal Area do Psicobiologia Dept. de Psicologia do la Salut Univ...Ignacio Morgado-Bernal Dr. Georges Moroz Area de Psicobiologia CNS Development Psicologia do la Salud CIBA-GEIGY Corp. Univ. Autonoma do Barcelona DEV

Dos personajes: un pensamiento educativo latinoamericano

Directory of Open Access Journals (Sweden)

Morales Bonilla, Roxana

2005-03-01

Full Text Available En este ensayo, se analiza el aporte que los pedagogos Paulo Freire e Ignacio Martín-Baró, brindaron a la educación latinoamericana. Su labor educativa plantea alternativas pedagógicas contestatarias que luchan contra la injusticia social, económica, política y cultural. Este enfoque propone metodologías participativas y liberadoras que ofrecen contenidos socialmente emancipadores. De tal forma esta nueva visión produce una reinterpretación y organización de los procesos pedagógicos vigentes. In this essay, the contribution brought by the pedagogues Paulo Freire and Ignacio Martín-Baró to Latin American education is analyzed. Their educative work presents pedagogical alternatives that run against the establishment; fighting against social, economical, political and cultural injustice. This approach proposes cooperative and liberating methodologies that offer socially-emancipating contents. In this manner, this new vision takes a new interpretation and organization of the present pedagogical processes.

Draft Genome Sequence of Bacillus velezensis 3A-25B, a Strain with Biocontrol Activity against Fungal and Oomycete Root Plant Phytopathogens, Isolated from Grassland Soil.

Science.gov (United States)

Martínez-Raudales, Inés; De La Cruz-Rodríguez, Yumiko; Vega-Arreguín, Julio; Alvarado-Gutiérrez, Alejandro; Fraire-Mayorga, Atzin; Alvarado-Rodríguez, Miguel; Balderas-Hernández, Victor; Gómez-Soto, José Manuel; Fraire-Velázquez, Saúl

2017-09-28

Here, we present the draft genome of Bacillus velezensis 3A-25B, which totaled 4.01 Mb with 36 contigs, 3,948 genes, and a GC content of 46.34%. This strain, which demonstrates biocontrol activity against root rot causal phytopathogens in horticultural crops and friendly interactions in roots of pepper plantlets, was obtained from grassland soil in Zacatecas Province, Mexico. Copyright © 2017 Martínez-Raudales et al.

The nootka and sandwich vocabularies in the relación de la entrada de san lorenzo de nutka

NARCIS (Netherlands)

Fernández Rodríguez, R.

2013-01-01

Nootka is an historical fur-trading centre in Yuquot, on the west coast of Vancouver Island, British Columbia, Canada. In 1788, the Spanish king Charles III sent an expedition to Nootka commanded by Ignacio Arteaga (1731-1783). A year later, Spain established a military post, San Lorenzo de Nutka,

International Journal of Modern Anthropology - Vol 1, No 10 (2017)

African Journals Online (AJOL)

HLA genes in Atlantic Celtic populations: are Celts Iberians? EMAIL FREE FULL TEXT EMAIL FREE FULL TEXT DOWNLOAD FULL TEXT DOWNLOAD FULL TEXT. Antonio Arnaiz-Villena, Ana Carballo, Ignacio Juarez, Ester Muñiz, Cristina Campos, Beatriz Tejedor, Manuel Martín-Villa, Jose Palacio-Gruber, 50-72.

Eracing the Simple Certainty of Difference: A Psychoanalytic Contribution.

Science.gov (United States)

Lombardi, Karen L.

2002-01-01

Asserts that racism, classism, and sexism are fostered not only through material conditions but also through the privileging of difference common to Western intellectual thought. Turns to the unconscious of psychoanalytic theory, especially the theories of Melanie Klein and Ignacio Matter Blanco, recommending an alternative discourse on race,…

More and more together : Legal family formats for same-sex and different-sex couples in European countries – Comparative analysis of data in the LawsAndFamilies Database

NARCIS (Netherlands)

Waaldijk, C.

2017-01-01

This report (edited by Kees Waaldijk) includes contributions by Daniel Damonzé, Marie Digoix, Marina Franchi, Natalie Nikolina, José Ignacio Pichardo Galán, Giulia Selmi, Matias de Stéfano Barbero, Matthias Thibeaud, Jose A.M. Vela, Kees Waaldijk, and Giuseppe Zago. This report offers a

[Evaluation of the antithrombotic strategy in low thrombotic risk patients who underwent aortic valve replacement with a bioprosthesis].

Science.gov (United States)

Aceves-Velázquez, Eduardo; Vieyra-Herrera, Gerardo; Rodríguez-Chávez, Laura; Herrera-Alarcón, Valentín

2017-07-16

According to current guidelines, in patients without additional risk factors who have undergone aortic valve replacement with a bioprosthesis, anticoagulation in the first 3 months after surgery is still a matter of debate. According to current evidence, aspirin in low doses is a reasonable alternative to vitamin K antagonists (VKA). A comparison is made between the incidence of thrombotic and haemorrhagic complications in patients with low thrombotic risk who underwent aortic valve replacement with a bioprosthesis in the National Institute of Cardiology of Ignacio Chávez of Mexico. The hypothesis: aspirin as monotherapy has a beneficial effect compared to VKA. The studied patients were the low thrombotic risk patients who underwent aortic valve replacement with a bioprosthesis in the National Institute of Cardiology of Ignacio Chávez of Mexico from 2011 to 2015. The groups studied were: aspirin only, VKA only, and the combination of VKA plus aspirin. The patients were retrospectively followed-up for 12 months, and the thrombotic and haemorrhagic complications were documented. Of the 231 patients included in the study, only one patient in the VKA only group presented with a haemorrhagic complication. No thrombotic complications were observed. In the present study no thrombotic complications were observed in patients who did not receive anticoagulation in the first 3 months after an aortic valve replacement with a bioprosthesis after a follow up period of 12 months. This suggests that the use of aspirin only is safe during this period. Copyright © 2017 Instituto Nacional de Cardiología Ignacio Chávez. Publicado por Masson Doyma México S.A. All rights reserved.

76 FR 47089 - Regulatory Review Schedule; Cancellation of Consultation Meetings

Science.gov (United States)

2011-08-04

... Consultation-- Wild Horse Resort Casino, 1, 2, 3, 4, 5 Southwest. Scottsdale, AZ. September 19-20, 2011 NIGC Regional Training..... Sky Ute Casino Resort 3, 4, 5 Ignacio, CO. September 27-28, 2011 NIGC Consultation-- Turning Stone Casino, NY... 3, 5 Northeast. November 7-12, 2011 USET Annual Meeting........ Mississippi...

Correction: Towards the rationalization of catalytic activity values by means of local hyper-softness on the catalytic site: a criticism about the use of net electric charges.

Science.gov (United States)

Martínez-Araya, Jorge Ignacio; Grand, André; Glossman-Mitnik, Daniel

2016-01-28

Correction for 'Towards the rationalization of catalytic activity values by means of local hyper-softness on the catalytic site: a criticism about the use of net electric charges' by Jorge Ignacio Martínez-Araya et al., Phys. Chem. Chem. Phys., 2015, DOI: 10.1039/c5cp03822g.

Global tourism chains and local development in the Amazon: Implications for community wellbeing. Leticia (Colombia

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Xerardo Pereiro

2017-07-01

Full Text Available Critical review of a book by Germán Ignacio Ochoa Zuluaga on the tourist value chain and the distribution of tourism benefits in a context of the Colombian periphery. The research work base of this publication has been made in Leticia, border area with Brazil and Peru.

78 FR 21603 - Change in Bank Control Notices; Acquisitions of Shares of a Bank or Bank Holding Company

Science.gov (United States)

2013-04-11

... April 26, 2013. A. Federal Reserve Bank of Chicago (Colette A. Fried, Assistant Vice President) 230 South LaSalle Street, Chicago, Illinois 60690-1414: 1. MBG Investors I, LP, Mexico City, Mexico, and its... Pablo del Valle Perochena, Ignacio del Valle Ruiz and Adolfo del Valle Ruiz, all of Mexico City, Mexico...

Euroopa tellisepreemia 2006 / Triin Ojari

Index Scriptorium Estoniae

Ojari, Triin, 1974-

2006-01-01

Viinis toimunud Euroopa tellisarhitektuuri auhindade Brick'06 kätteandmisel märgiti ära Tartu Jaani kiriku taastamine (arhitekt Udo Tiirmaa, kunstiajaloolane Kaur Alttoa). Esimene koht: Ungari Pecsi linna Barbakani väljaku elu- ja ärikompleks (arhitektid Ferenc Csagoly, Ferenc Keller). Teine koht: kiriku rekonstruktsioon raamatukoguks Madridis (arhitekt Jose Ignacio Rodriguez)

Sadhana | Indian Academy of Sciences

Indian Academy of Sciences (India)

Home; Journals; Sadhana. RAVINDRA GETTU. Articles written in Sadhana. Volume 37 Issue 1 February 2012 pp 187-205. Analysis of mixed-mode fracture in concrete using interface elements and a cohesive crack model · Víctor O García-Álvarez Ravindra Gettu Ignacio Carol · More Details Abstract Fulltext PDF. The paper ...

Mercury Speciation in Contaminated Soils from Old Mining Activities in Mexico Using a Chemical Selective Extraction

OpenAIRE

Gavilán-García, Irma; Santos-Santos, Elvira; Tovar-Gálvez, Luis R.; Gavilán-García, Arturo; Suárez, Sara; Olmos, Jesús

2008-01-01

Amalgamation was heavily used in mining since 1557 in Spanish Colonies. In Mexico and other parts of Latin-America, this process generated tailings which were left aside in the mine backyards. In the valley of Zacatecas, tailings were carried out of the mines due to the run-off from the mountains and contaminated most of the Zacatecan Valley which most important economic activity is agricultural (crop and livestock raising). The main concern in this area is the high level of total mercury fou...

Situación actual y perspectivas de desarrollo

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Gabriel Lo\\u0301pez Nava

2014-01-01

un modelo táctico de planeación de la cadena de suministro. Este análisis considera las relaciones entre empresas pequeñas y medianas (Pyme. Los resultados permitieron la obtención de información relacionada con la industria; la identificación de las áreas de oportunidad de los agentes de la cadena; y la evaluación del potencial y restricciones de la cadena de suministro del agave-mezcal del estado de Zacatecas.

Social benefits of the RIA technique in the State of Zacatecas; Beneficio social de la tecnica de RIA en el Estado de Zacatecas

Energy Technology Data Exchange (ETDEWEB)

Badillo R, Y.; Badillo A, V. [UAZ, Carretera a Ciudad Cuahutemoc Km. 0.5, Guadalupe, Zacatecas (Mexico)]. E-mail: yasminbadilloregis@hotmail.com

2004-07-01

Presently work was carried out tests of thyroid function to 159 patients with the purpose of evaluating the incidence of thyroid illnesses, being based these studies on the method of Radio immuno analysis (RIA). During this work they were studied 159 patients, men (21%) and women (79%), to which were practiced the tests of thyroid function, applying the technique of Radio immuno analysis, throwing the following results: Healthy patients (58.5%); Hyper thyroidal patients (22.6%), Hypo thyroidal patients (18.9%). The social benefit of this technique and their importance is because the patients that go to this laboratory are of scarce resources and otherwise; they would not simply be diagnose, since we have found patients that have taken until 10 years in that are diagnosed thyroid abnormalities. (Author)

Translations on Narcotics and Dangerous Drugs No. 305

Science.gov (United States)

1977-06-17

prosecutor; Augusto Caro Rojas, court reporter; Rodolfo Carvajal Florez, municipal employee; Orlando Carrascal Claro, inspector; Jesus Antonio Carrillo...Arturo Melo Diaz, judge; Rafael Mendez Buendia, judge; Tirso Mendez Herrera, professor; Rubiela Maria Mendez Mendez , judge; Luis Orlando Mendez ...Misael Roa Fonseca, jail guard; Jose Ignacio Roa Mendez , policeman; Jose Anibal Robles Alvarado, judge; Jorge Rocha Mahecha, govern- ment inspector

Salud mental y diabetes mellitus tipo 1 : la percepción de la enfermedad y el afrontamiento en el adolescente /

OpenAIRE

Hernandez Montoya, Dewi Sharon

2012-01-01

 tesis que para obtener el grado de Doctorado en Ciencias de la Salud, presenta Dewi Sharon Hernandez Montoya ; asesor Corina Benjet, Catalina González Forteza, Ignacio Mendez Ramírez, Rebeca Robles García, Antonio Villa Romero160 páginas : ilustracionesDoctorado en Ciencias de la Salud UNAM, Facultad de Medicina, 2012

Gestión de residuos de construcción y demoliciones. Áridos reciclados

OpenAIRE

Tertre Torán, José Ignacio

2007-01-01

El Instituto de Ciencias de la Construcción Eduardo Torroja (CSIC) organiza seminarios monográficos sobre temas de actualidad en el ámbito de la Tecnología de la Construcción y de sus Materiales a cargo de destacados investigadores nacionales y extranjeros del sector .-- Ignacio Tertre Torán pertenece a Tecnologia y Reciclado, S.L.

Semiannual Report, April 1 1999 through September 30, 1999.

Science.gov (United States)

1999-11-01

Nonlinear Difference Equation Models from Data for Flow Control Richard Longman Modern feedback control system design methods usually make use of a...Layer" Goossens , Serge, Katholieke Universitaeit, Belgium July 22 "Two-level Algorithms for Overlapping Composite Mesh Difference Methods" Taft, James...Physical Sciences - Flow Control Llorente, Ignacio Applied & Numerical Math Longman, Richard Physical Sciences - Flow Control University of Paris

Nuevos registros estatales y nacionales de escarabajos (Coleoptera: Scarabaeoidea y comentarios sobre su distribución New state and country records of scarab beetles (Coleoptera: Scarabaeoidea and comments on their distribution

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Miguel Ángel Morón

2012-09-01

Full Text Available Se detallan 49 registros estatales nuevos para 38 especies de Geotrupidae, Hybosoridae, Melolonthidae y Scarabaeidae en Coahuila (1, Colima (3, Chiapas (1, Durango (1, Guerrero (1, Guanajuato (5, Hidalgo (4, Jalisco (1, Michoacán (2, Nayarit (2, Oaxaca (1, Querétaro (8, San Luis Potosí (10, Sonora (1, Tlaxcala (3, Tamaulipas (1, Veracruz (1, Zacatecas (1 y Distrito Federal (2. Se registran por primera vez Amithao cavifrons (Burmeister para Guatemala (El Petén y Leucothyreus femoratus Burmeister para Nicaragua (Granada. Mediante la elaboración de los trazos individuales de las especies analizadas se discute la congruencia de la distribución de cada especie con patrones biogeográficos previamente observados en Scarabaeoidea y otros grupos de coleópteros.Forty nine new state records of 38 species of Geotrupidae, Hybosoridae, Melolonthidae and Scarabaeidae are listed for Coahuila (1, Colima (3, Chiapas (1, Durango (1, Guerrero (1, Guanajuato (5, Hidalgo (4, Jalisco (1, Michoacán (2, Nayarit (2, Oaxaca (1, Querétaro (8, San Luis Potosí (10, Sonora (1, Tlaxcala (3, Tamaulipas (1, Veracruz (1, Zacatecas (1, and Distrito Federal (2. Two new country records for Amithao cavifrons (Burmeister in Guatemala (El Peten and Leucothyreus femoratus Burmeister in Nicaragua (Granada are also listed. Based on the individual tracks of the species analyzed, the congruence of the distribution of every species with previously observed biogeographic patterns in Scarabaeoidea and other beetle groups is discussed.

El neopaleozoico de la Sierra de Castaño (Cordillera Frontal andina, San Juan, Argentina: Reconstrucción tectónica y paleoambiental The neopaleozoic of the Sierra de Castaño (Andean Cordillera Frontal, San Juan, Argentina: Tectonic and paleoenviromental reconstruction

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Pedro Busquets

2013-01-01

Full Text Available Se efectúa el análisis estratigráfico de la secuencia neopaleozoica aflorante en la Sierra de Castaño (Cordillera Frontal de la provincia de San Juan, donde han sido reconocidas tres unidades estratigráficas. La basal corresponde a la Formación Cerro Agua Negra (Carbonífero tardío-Pérmico temprano?, formada por areniscas y pelitas depositadas en ambiente marino de plataforma somera y litoral. Sobre ella se dispone la Formación San Ignacio, compuesta por sedimentitas silicoclásticas (desde conglomerados hasta pelitas, calizas estromatolíticas-microbiales, rocas volcánicas, en su mayoría de composición mesosilícica y ácida, y depósitos volcanoclásticos. Estas últimas rocas, probablemente depositadas hacia fines del Carbonífero tardío o en el Pérmico más temprano, cubren en discordancia angular a las de la Formación Cerro Agua Negra en la Sierra de Castaño. Dentro de la Formación San Ignacio fueron identificadas 3 asociaciones de facies sedimentarias. La inferior (AFa está formada por brechas, conglomerados brechosos y areniscas líticas, sedimentadas en sistemas aluviales y fluviales entrelazados que rellenaron una irregular topografía labrada sobre la Formación Cerro Agua Negra. La asociación de facies media (AFb, compuesta por conglomerados, areniscas y pelitas, desarrolla ciclos granodecrecientes de escala métrica muy probablemente originados en sistemas fluviales de alta sinuosidad. La asociación de facies superior (AFc comprende calizas estromatolíticas microbiales, pelitas, niveles de volcanitas y piroclastitas, originadas en cuerpos de aguas someros sujetos a recurrente actividad volcánica. La Formación San Ignacio permite caracterizar el pasaje entre las sucesiones no volcánicas de la Formación Cerro Agua Negra y el intenso magmatismo representado en el Grupo Choiyoi (Pérmico medio-Triásico Inferior. Además demuestra la existencia de dos eventos mayores de deformación tectónica en la regi

El “consentimiento” negociado entre dos comunidades mineras mexicanas y las trasnacionales Goldcorp y Ternium

OpenAIRE

Blanca Ruth Santos Cordero; Eleocadio Martínez Silva

2015-01-01

En este artículo se busca reconstruir la dinámica de la relación entre empresas trasnacionales y comunidades rurales mexicanas, a partir de dos estudios de caso: la minera canadiense Goldcorp, en Mazapil, Zacatecas, y la italo-argentina Ternium, en San Miguel Arcángel, en Aquila, Michoacán. La hipótesis sostiene que la racionalidad de la máxima ganancia y el cálculo del riesgo están presentes en las negociaciones entabladas entre las comunidades campesinas y las corporaciones. Y, si bien e...

Asociación de cepas fijadoras de nitrógeno de vida libre, con recursos genéticos de pastos para zonas áridas.

OpenAIRE

Plascencia Jiménez, Raúl

2014-01-01

Para evaluar microorganismos de la rizosfera de Bouteloua curtipendula (Michx.) Torr., se recolectó suelo de cinco localidades 1) Salinas, San Luis Potosí 2) Ejido, Jacalón, Salinas, San Luis Potosí; 3) Calera, Zacatecas; 4) Santa María del Oro, Durango y 5) Crucero La Zarca, Durango. La población de actinomicetos, bacterias y hongos, se estimó con diluciones seriadas (10-1 a 10-10). Los actinomicetos (AS), bacterias (BS) y hongos (HS) se estimaron con diluciones 10-3 a 10-5; 10-5 a 10-7; 10-...

Evaluación de un cluster bajo agricultura protegida en México

OpenAIRE

Padilla-Bernal, Luz Evelia; Reyes-Rivas, Eliver; Pérez-Veyna, Óscar

2012-01-01

El naciente cluster de tomate bajo agricultura protegida en Zacatecas enfrenta el reto de participar en los mercados globales de una manera sostenible; una respuesta viable para ello es elevar su capacidad de upgrading. En este trabajo se determina la relación entre la eficiencia colectiva en el upgrading del cluster. La información se obtuvo a través de un cuestionario aplicado a técnicos de las unidades de producción (UP), el cual se complementó con entrevistas a propietarios o gerentes, in...

El colegio de la compañía y la Universidad de Salamanca en el siglo XVI. Desde los orígenes hasta la incorporación a la Universidad

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Benigno HERNÁNDEZ MONTES

2009-12-01

Full Text Available San Ignacio de Loyola, fundador de la Compañía de Jesús, decidió venir a estudiar a la Universidad de Salamanca en el verano de 1527, una vez que vio cerradas para él las puertas de la Universidad de Alcalá. El arzobispo Fonseca le ofreció un puesto en el Colegio Mayor de Santiago el Cebedeo por él fundado. No aceptó el santo el ofrecimiento, por lo que, llegado a la ciudad del Tormes vestido como un pobre estudiante, se aposentó en una posada.Lo más probable es que ni siquiera llegase a matricularse en la academia salmantina, por más que el tardío claustro pleno de la Universidad del 4-VII-1624 llame a Ignacio «hijo de esta Vniversidad». Una iniciativa de los dominicos de San Esteban hizo que aquel candidato a estudiante de Salamanca diera pronto con sus huesos en la cárcel episcopal. Salido de ella, abandonó para siempre la ciudad camino de la Sorbona parisiense «llevando algunos libros en un asnillo».

Chlamydia trachomatis in the conjunctiva of children living in three rural areas in Mexico Chlamydia trachomatis en la conjuntiva de niños de tres zonas rurales de México

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Pablo Goldschmidt

2007-07-01

Full Text Available OBJECTIVES: Chlamydia trachomatis infections, in the context of extreme poverty, may trigger trachoma. Because the levels of C. trachomatis eye infections in Mexico are unknown, this study sought to determine if C. trachomatis was present in the conjunctiva of children living in three poor, rural areas of the country. METHODS: Clinical diagnosis of conjunctival follicles in children was conducted during the 2004 visual acuity assessment campaigns in rural areas of the states of Chiapas, Oaxaca, and Zacatecas. C. trachomatis detection was carried out by sampling the children with follicles and examining the specimens after Giemsa or microimmunofluorescence (MIF staining. RESULTS: A total of 941 children from 6 to 12 years of age were examined in 2004. Of the 484 in Chiapas, 30% were found to have follicles; of the 181 in Zacatecas, 22%; and of the 276 in Oaxaca, 42%. C. trachomatis was detected at levels ranging between 2% and 5%; positive by Giemsa in 4.5% of the children with follicles, and by MIF in 15.5%. CONCLUSIONS: Considering that the chlamydiae sampling procedures and detection methods used in this study were not the most sensitive, the results underestimate the chlamydial eye infections and represent a conservative assessment of a potential risk for preventable visual impairment. Because C. trachomatis was detected here at levels similar to those reported for low-endemic trachoma areas, health authorities should be prepared to implement appropriate measures should it be confirmed that the visual health of Mexico’s children is at risk.OBJETIVOS: En un contexto de pobreza extrema, la infección por Chlamydia trachomatis puede desencadenar el tracoma. Debido a que se desconocen los niveles de infección ocular con C. trachomatis en México, el objetivo de este estudio fue determinar la presencia de C. trachomatis en la conjuntiva de niños de tres zonas rurales pobres de México. MÉTODOS:El diagnóstico clínico de fol

International Conference on Chemical Kinetics: Program and Abstracts Held in Gaithersburg, Maryland on 17-19 June 1985.

Science.gov (United States)

1985-06-01

Salamanca Dpto. Fisica Teorica and University Complutense Dpto. Metodos Matematicos de la F1sica The authors show how the knowledge of (n-1) first...M. Dominguez. Centro de Quimica, Instituto Venezolano de Investigaciones Cientificas Caracas 1010-A. Venezuela. The kinetics of the gas phase...Alexandra Rotinov, Rosa M. Domfnguez, and Ignacio Martin Centro de Qufmica, Instituto Venezolano de Investigaciones Cientificas (I.V.I.C.), Caracas

Pequeña biografía: Don Miguel de Cervantes

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Fernando Serpa Flórez

1963-01-01

Full Text Available Alcalá de Henares, ciudad castellana. Su puerta amurallada trae memorias de épocas guerreras. Sus calles, de casas vetustas, con penumbrosos soportales, guardan recuerdos de caballeros y caballería. Su ilustre universidad dio luces a mil brillantes forjadores del siglo de oro español: Lope de Vega, Ignacio de Loyola, Antonio Pérez, Francisco de Quevedo y Villegas...

Decree 120/12. It regulate the servitudes prescribed by law 17,389

International Nuclear Information System (INIS)

2012-01-01

This decree regulates the monitoring, control, maintenance and operation of the oil pipeline territory in charge of Ancap. This pipeline connects the Eastern Terminal Jose Ignacio with La Teja refinery which simultaneously is connected with La Tablada plant. The Administracion Nacional de Combustibles Alcohol y Portland (Ancap) establish the prohibitions and limitations on the land use as well as the explosive charge circulation in the zone.

LA CULTURA EMPRENDEDORA Y LOS PROYECTOS FINANCIADOS

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Rodolfo Ramírez Calvillo

2013-06-01

Full Text Available En el presente estudio se analizan los proyectos productivos apoyados por el Programa 3x1 Para Migrantes en Zacatecas durante el periodo 2002-2007 a fin de determinar dentro del concepto de cultura emprendedora la identificación del giro en que les agradaría emprender a los líderes de los proyectos productivos  y  reconocer el perfil de los emprendedores.Se seleccionó el enfoque de métodos mixtos porque tiende a concepciones pragmáticas del conocimiento. Recurre a preguntas abiertas y cerradas, enfoques emergentes y predeterminados,  datos y los respectivos análisis (Creswell, 2003.La estrategia de indagación que se utilizó fue la secuencial exploratoria, debido a sus características, en la obtención y análisis de los datos cualitativos, seguida por la obtención y análisis de los datos cuantitativos.Los resultados fue que la gran mayoría desea continuar con la actividad en la que actualmente  está trabajando y el nuevo emprendimiento consolidaría su actual situación, emprenderían  en otra rama como la agricultura controlada como el caso del invernadero para evitar las adversidades climatológicas, o como el caso de la fruticultura, el avanzar hacia la envasadora de frutas y las conservas.No hay un solo perfil sino una diversidad con ciertos rasgos característicos propios del entorno del estado de Zacatecas. 

LIMIT SITUATION IN EARLY CHILDHOOD EDUCATION: CONTRADICTIONS AND POSSIBILITIES OF INTERVENTION

OpenAIRE

Moreira, Ana Paula Gomes; Guzzo, Raquel Souza Lobo

2013-01-01

Abstract: This work is placed in the framework of school psychology. Its development tried to discuss the application of the concept of limit-situation, created by Ignacio Martín-Baró, to the context of childhood education. This concept emphasizes the relationship between risk, vulnerability and protection from the dialectical materialist perspective . Through a documentary investigation based on participatory-action-research, we conducted an interpretive process culminating in the developmen...

Caracterización y fraccionamiento químico de metales tóxicos en residuos mineros

OpenAIRE

Pérez Pegado, Ester

2015-01-01

Los residuos, llamados jales, de la producción de Plata colonial mediante la técnica de fusión, que es utilizada ampliamente en Zacatecas (México) hasta 1820, fueron dispersados por ríos de la región y se depositan generalmente en las zonas bajas y se utilizan para cultivos y ganadería. A partir de 1920, ha habido actividades de procesamiento, para extraer metales preciosos de estos suelos, en base a una lixiviación con tiosulfato de calcio y posterior recuperación de Ag y Hg en el lixiviado,...

Potencial dendroclimático de Pinus pinceana Gordon en la Sierra Madre Oriental

OpenAIRE

Santillán-Hernández, Miriam; Cornejo-Oviedo, Eladio H.; Villanueva-Díaz, José; Cerano-Paredes, Julián; Valencia-Manzo, Salvador; Capó-Arteaga, Miguel Ángel

2010-01-01

Se determinó la sensibilidad climática de Pinus pinceana Gordon y su potencial para reconstrucciones climáticas en diez de sus poblaciones localizadas en la región noreste (Zacatecas y Coahuila), norte-centro (San Luis Potosí) y centro (Hidalgo y Querétaro) de México. Se fecharon al año de formación de sus crecimientos anuales las poblaciones del noreste, centro-norte y centro de la república; excepto la población de El Arenalito en la cual no se encontró un patrón similar de crecimiento. En ...

LA PROTECCIÓN DE LOS DERECHOS DE LA INFANCIA MBYÁ-GUARANÍ: APORTES DE LA ETNOGRAFÍA EN LA PROBLEMATIZACIÓN DE LAS EXPERIENCIAS FORMATIVAS

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Ana Padawer

2010-12-01

Full Text Available ABSTRACT: This paper analyzes children rights regulations about the elimination of child labour in the South Cone countries where mbyá-guarani populations live (Paraguay, Brazil, and Argentina, and their relation to child participation in traditional productive activities, considering their formative aspect. It includes a discussion on the concepts incorporated in such rights regulations and their implications in a fieldwork carried out in San Ignacio(Southwest of the Misiones province, Argentina, as well as recent studies conducted by other researchers in these national contexts.RESUMEN: Este trabajo analiza las normativas de protección de los derechos del niño referidas a la erradicación del trabajo infantil en los países del Cono Sur en los que actualmente vive población mbyá-guaraní (Paraguay, Brasil y Argentina y su relación con laincorporación de los niños a las actividades productivas tradicionales, atendiendo a su carácter formativo. Se presenta una discusión sobre los conceptos incluidos en la normativa ysus implicancias en un trabajo de campo en curso en San Ignacio (suroeste de la provincia de Misiones, Argentina, así como estudios recientes efectuados por otros investigadores en estos contextos nacionales.

Producción y mano de obra en las haciendas jesuíticas del Buenos Aires colonial: La Chacarita y Las Conchas en el siglo XVIII

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Olivero Guidobono, Sandra

2012-12-01

Full Text Available The haciendas La Chacarita and Las Conchas, located at the Pago de la Costa in the Buenos Aires countryside, were destined to provide the supplies to the Major College of San Ignacio and to supply the regional market. The exploitation of these lands followed the basic pattern of other Jesuit properties in the territory: it combined stock raising, craft industry and grain production. This paper analyses the level of output of these haciendas and the role of the slave workforce, paying special attention to its structure and components.

Situadas en el Pago de la Costa, en la campaña bonaerense, las haciendas de La Chacarita y Las Conchas, estaban destinadas a proveer de recursos al Colegio Grande de San Ignacio y a abastecer a un mercado regional. La producción en estas tierras, reproducía el esquema básico de otras propiedades jesuíticas de la Gobernación: combinaba la producción ganadera con la artesanal y el cultivo del cereal. El presente trabajo analiza el grado de producción de estas haciendas y la importancia del empleo de mano de obra esclava, atendiendo especialmente a su estructura y composición.

Mexico: The Accidental Narco?

Science.gov (United States)

2011-06-30

9 Gonzales, Maria de la Luz (2009-03-25). "Suman 10 mil 475 ejecuciones en esta administracion : PGR" (in Spanish). El Universal. http...the Sinaloa cartel, Ignacio Coronel was killed in 2010. The leader of La Familia, Nazario Moreno Gonzalez, could not escape the reach of Mexican...cartel, La Familia, had proposed truces with the government and promised a reduction in violence if the government focuses more on targeting its

Analysis of the CFTR gene in Venezuelan cystic fibrosis patients, identification of six novel cystic fibrosis-causing genetic variants

OpenAIRE

Sánchez, Karen; De Mendonca,Elizabeth; Matute,Xiorama; Chaustre,Ismenia; Villalon,Marlene; Takiff,Howard

2016-01-01

Karen Sánchez,1 Elizabeth de Mendonca,1 Xiorama Matute,2 Ismenia Chaustre,2 Marlene Villalón,3 Howard Takiff4 1Unit of Genetic and Forensic Studies, Venezuelan Institute for Scientific Research (IVIC), 2Hospital JM de los Ríos, 3Hospital José Ignacio Baldo, Algodonal, National Reference Unit, 4Laboratory of Molecular Genetics, Venezuelan Institute for Scientific Research (IVIC), Caracas, Venezuela. Abstract: The mutations in the CFTR gene found in ...

El subsistema de educación en ciencia y tecnología del mar en méxico: el compromiso personal y sus relaciones con los factores psicosociales y objetivos operativos /

OpenAIRE

Luna Ornelas, Armando

2012-01-01

 tesis que para obtener el grado de Doctorado en Administración, presenta Armando Luna Ornelas ; tutor principal de tesis José Ramón Torres Solís, Ignacio González Sánchez, José Jorge Celestino Cardiel Hurtado230 páginas : ilustracionesDoctorado en Administración Universidad Nacional Autónoma de México, 2012 Programa de Posgrado en Ciencias de la Administración

Military Professionalism and Political Influence: A Case Study of the Mexican Military, 1917-1940

Science.gov (United States)

1992-01-01

refused to support Obreg6n’s campaign and attempted to impose a relative unknown, Ignacio Bonillas , as the next president. 2 0 When Carranza...from military forces that claimed to be followers of such revolutionary leaders as Carranza, Villa, and Pablo Gonzalez. These armies were led by...was busy as the Director of Military Education, his successor as Secretary of War, General Pablo Quiroga (and for a short period, General Ldzaro C

Casas y bodegas de Florida, San Ignacio, Ninhue, Ranquil y Coelemu

Directory of Open Access Journals (Sweden)

Gonzalo Cerda Brintrup

1990-12-01

A continuación presentamos algunos de estos ejemplos: Casa principal del Fundo "Las Lajuelas" de Florida; Vivienda en Ranquil; Bodega de vinos "El Roble" en las cercanías de Coelemu y una vivienda urbana de Ninhue.

Social benefits of the RIA technique in the State of Zacatecas

International Nuclear Information System (INIS)

Badillo R, Y.; Badillo A, V.

2004-01-01

Presently work was carried out tests of thyroid function to 159 patients with the purpose of evaluating the incidence of thyroid illnesses, being based these studies on the method of Radio immuno analysis (RIA). During this work they were studied 159 patients, men (21%) and women (79%), to which were practiced the tests of thyroid function, applying the technique of Radio immuno analysis, throwing the following results: Healthy patients (58.5%); Hyper thyroidal patients (22.6%), Hypo thyroidal patients (18.9%). The social benefit of this technique and their importance is because the patients that go to this laboratory are of scarce resources and otherwise; they would not simply be diagnose, since we have found patients that have taken until 10 years in that are diagnosed thyroid abnormalities. (Author)

Visit of Spanish Government delegation

CERN Multimedia

CERN PhotoLab

1982-01-01

A Spanish Government delegation visited CERN before Spain rejoined CERN as a Member State(in 1983). Delegates interested in advanced technologies visited the ISR workshop clean room, where Romeo Perin explained fabrication and properties of stainless steel, titanium and inconel components of vacuum chambers for experiments at the ISR. Left to right: Technical Director Giorgio Brianti, the Spanish Minister of Industry and Energy Mr.Ignacio Bayon Marine , Romeo Perin, a delegate and Director-General Herwig Schopper. See also 8202369.

Spanish Government delegation in the ISR workshop clean room

CERN Multimedia

CERN PhotoLab

1982-01-01

A Spanish Government delegation visited CERN before Spain rejoined CERN as a Member State(in 1983). Some delegates were particularly interested in advanced technologies. The picture shows them in the ISR workshop clean room looking at components of vacuum chambers for experiments. From left to right: a delegate, Director-General Herwig Schopper demonstrating the lightness of a titanium chamber, another delegate, the Spanish Minister of Industry and Energy Mr.Ignacio Bayon Marine and Romeo Perin. See also 8202369.

How to restore dry forest ecosystems

OpenAIRE

Nalvarte, Jaime

2012-01-01

AIDER is a Peruvian non-governmental organization working since 1992 on forest management activities, watershed management and urban forest management on tropical humid and dry forest at a national level. AIDER and the José Ignacio Távara Pasapera rural community have been working on dry forest management and recovery since 1992. This paper summarizes the activity of AIDER in the dry forests for the purpose of recovering degraded forest areas and conserve existing forests by developing sustai...

Strategic Insights. Volume 10, Issue 2, Summer 2011

Science.gov (United States)

2011-06-01

messages to demand the “tax” began to include a personal reference code for each “ client ,” illustrating the efficiency of its financing and...Alasdair M. (Eds.), Contemporary Research on Terrorism (Aberdeen: Aberdeen UP, 1987): 121-129. San Martín, José Ignacio, Servicio especial. A las órdenes...11 Elaborating, Haddad explained that the main idea was to hijack an El Al airliner and to hold its passengers and crew hostage. Haddad claimed that

Formative experiences, self-identifications and environmental conflicts in the southwest of Misiones (Argentina)

OpenAIRE

Padawer, Ana; Canciani, María Laura

2015-01-01

En este artículo abordaremos cómo se relacionan las experiencias formativas vinculadas al trabajo rural, las identificaciones y los conflictos ambientales en San Ignacio, Misiones (Argentina). Nos interesa problematizar cómo los aprendizajes ligados a las tareas rurales se vinculan con las auto-adscripciones de los sujetos, teniendo como referencia las categorías de actores sociales agrarios regionales y las denominaciones que provienen de agendas estatales de intervención. Estos procesos aco...

NSDUAZ unfolding package for neutron spectrometry and dosimetry with Bonner spheres

Energy Technology Data Exchange (ETDEWEB)

Vega C, H. R.; Martinez B, M. R. [Universidad Autonoma de Zacatecas, Unidad Academica de Estudios Nucleares, Calle Cipres No. 10, Fracc. La Penuela, 98068 Zacatecas (Mexico); Ortiz R, J. M., E-mail: fermineutron@yahoo.com [Universidad Autonoma de Zacatecas, Unidad Academica de Ingenieria Electrica, Av. Ramon Lopez Velarde 801, Col. Centro, 98000 Zacatecas (Mexico)

2011-10-15

NSDUAZ (Neutron Spectrometry and Dosimetry for the Universidad Autonoma de Zacatecas) is a user friendly neutron unfolding package for Bonner sphere spectrometer with {sup 6}Lil(Eu) developed under Lab View environment. Unfolding is carried out using a recursive iterative procedure with the SPUNIT algorithm, where the starting spectrum is obtained from a library initial guess spectrum to start the iterations, the package include a statistical procedure based on the count rates relative to the count rate in the 8 inches-diameter sphere to select the initial spectrum. Neutron spectrum is unfolded in 32 energy groups ranging from 10{sup -8} up to 231.2 MeV. (Author)

An Island Called Cuba

Directory of Open Access Journals (Sweden)

Jean Stubbs

2011-06-01

Full Text Available Review of: An Island Called Home: Returning to Jewish Cuba. Ruth Behar, photographs by Humberto Mayol. New Brunswick NJ: Rutgers University Press, 2007. xiii + 297 pp. (Cloth US$ 29.95 Fidel Castro: My Life: A Spoken Autobiography. Fidel Castro & Ignacio Ramonet. New York: Scribner/Simon & Schuster, 2008. vii + 724 pp. (Paper US$ 22.00, e-book US$ 14.99 Cuba: What Everyone Needs to Know. Julia E. Sweig. New York: Oxford University Press, 2009. xiv + 279 pp. (Paper US$ 16.95 [First paragraph] These three ostensibly very different books tell a compelling story of each author’s approach, as much as the subject matter itself. Fidel Castro: My Life: A Spoken Autobiography is based on a series of long interviews granted by the then-president of Cuba, Fidel Castro, to Spanish-Franco journalist Ignacio Ramonet. Cuba: What Everyone Needs to Know, by U.S. political analyst Julia Sweig, is one of a set country series, and, like Ramonet’s, presented in question/answer format. An Island Called Home: Returning to Jewish Cuba, with a narrative by Cuban-American anthropologist Ruth Behar and photographs by Cuban photographer Humberto Mayol, is a retrospective/introspective account of the Jewish presence in Cuba. While from Ramonet and Sweig we learn much about the revolutionary project, Behar and Mayol convey the lived experience of the small Jewish community against that backdrop.

Valves maintenance of the ANCAP's Jose Ignacio - La Teja Crude Pipeline, ANCAP, Uruguay; Mantenimiento de valvulas en el Oleoducto Jose Ignacio - La Teja de ANCAP, Uruguay

Energy Technology Data Exchange (ETDEWEB)

Gomez Haedo, Juan Carlos [ANCAP - Administracion Nacional de Combustibles, Alcohol y Portland, Montevideo (Uruguay)

2003-07-01

At the end of september, 2002, the ANCAP La Teja's Refinery, stopped its operation in order to make a scheduled maintenance and to prepare a plant enlargement. This stop would enable, for the first time in the Company, the complete maintenance of more than 120 valves along a 178 km crude pipeline which connects the SBM Ocean Terminal to the refinery on the Montevideo's Bay. The pipeline is a 16 inches ND pipeline, installed in 1978, buried at an average depth of 1,2 m. It crosses four rivers near their mouth, deep inside seaside resorts. The successful operation consisted in emptying out the pipeline, dismantling the hole valves of the system, inspection, repair and testing; mounting, pipeline hydraulic test and return to operation. All jobs were made with the coordinated efforts between two private companies and the own ANCAP's resources. The main problems were the pipeline emptying operation and the valves and plug valves repairing because there were not enough spare parts. (author)

Generación de bienestar social en México: un estudio DEA a partir del IDH

Directory of Open Access Journals (Sweden)

JOSÉ CÉSAR NAVARRO-CHÁVEZ

2016-01-01

Full Text Available El presente documento aborda el estudio del uso eficiente de los recursos para generar bienestar social en México durante el periodo 1990-2010; para ello se utilizó el Análisis de la Envolvente de Datos (DEA, tomando como referencia los indicadores socioeconómicos de las tres dimensiones del Índice de Desarrollo Humano (IDH. El análisis de resultados muestra que fueron Baja California Sur, Campeche, Chiapas, Colima, Distrito Federal, Estado de México, Quintana Roo, Tlaxcala y Zacatecas los más eficientes en la generación de bienestar social, haciendo evidente que las entidades con mayores recursos no son necesariamente las que generan mayor bienestar social.

El “consentimiento” negociado entre dos comunidades mineras mexicanas y las trasnacionales Goldcorp y Ternium

Directory of Open Access Journals (Sweden)

Blanca Ruth Santos Cordero

2015-01-01

Full Text Available En este artículo se busca reconstruir la dinámica de la relación entre empresas trasnacionales y comunidades rurales mexicanas, a partir de dos estudios de caso: la minera canadiense Goldcorp, en Mazapil, Zacatecas, y la italo-argentina Ternium, en San Miguel Arcángel, en Aquila, Michoacán. La hipótesis sostiene que la racionalidad de la máxima ganancia y el cálculo del riesgo están presentes en las negociaciones entabladas entre las comunidades campesinas y las corporaciones. Y, si bien en ellas se ha establecido una hegemonía de la racionalidad económica capitalista, el consentimiento ha sido activo y negociado.

[Cardiac computed tomography: new applications of an evolving technique].

Science.gov (United States)

Martín, María; Corros, Cecilia; Calvo, Juan; Mesa, Alicia; García-Campos, Ana; Rodríguez, María Luisa; Barreiro, Manuel; Rozado, José; Colunga, Santiago; de la Hera, Jesús M; Morís, César; Luyando, Luis H

2015-01-01

During the last years we have witnessed an increasing development of imaging techniques applied in Cardiology. Among them, cardiac computed tomography is an emerging and evolving technique. With the current possibility of very low radiation studies, the applications have expanded and go further coronariography In the present article we review the technical developments of cardiac computed tomography and its new applications. Copyright © 2014 Instituto Nacional de Cardiología Ignacio Chávez. Published by Masson Doyma México S.A. All rights reserved.

THE PROTECTION OF MBYÁ-GUARANÍ CHILDHOOD RIGHTS. ETHNOGRAPHIC CONTRIBUTIONS FOR QUESTIONING THE FORMATIVE EXPERIENCES

Directory of Open Access Journals (Sweden)

Ana Padawer

2010-12-01

Full Text Available This paper analyzes children rights regulations about the elimination of child labour in the South Cone countries where mbyá-guarani populations live (Paraguay, Brazil, and Argentina, and their relation to child participation in traditional productive activities, considering their formative aspect. It includes a discussion on the concepts incorporated in such rights regulations and their implications in a fieldwork carried out in San Ignacio (Southwest of the Misiones province, Argentina, as well as recent studies conducted by other researchers in these national contexts.

[Omentin: Role in insulin resistance, inflammation and cardiovascular protection].

Science.gov (United States)

Hernández-Díaz, Adrián; Arana-Martínez, Julio C; Carbó, Roxana; Espinosa-Cervantes, Román; Sánchez-Muñoz, Fausto

2016-01-01

The omentin is an adipokine, which role is due to the capacity of regulate metabolic (insulin sensitivity) and anti-inflammatory activities, thus conferring vascular protection during obesity and diabetes mellitus type 2. By this, it is important to know the mechanisms by which omentin confers cardiovascular protection, with the purpose of establish omentin a possible therapeutic target or molecule on this scenario. Copyright © 2015 Instituto Nacional de Cardiología Ignacio Chávez. Publicado por Masson Doyma México S.A. All rights reserved.

Las interferencias parentales y la alienación parental en el contexto jurídico español: Revisión de sentencias judiciales en materia de guarda y custodia

OpenAIRE

González Sarrió, Ignacio

2017-01-01

RESUMEN TESIS DOCTORAL 1. TÍTULO: LAS INTERFERENCIAS PARENTALES Y LA ALIENACIÓN PARENTAL EN EL CONTEXTO JURÍDICO ESPAÑOL: REVISIÓN DE SENTENCIAS JUDICIALES EN MATERIA DE GUARDA Y CUSTODIA. 2. AUTOR: Ignacio González Sarrió. 3. DIRECTORES: Dr. Ismael Loinaz Calvo y Dra. Mª. Jesús López Latorre. 4. TUTORA: Dra. Mª. Jesús López Latorre 5. PRESENTACIÓN. La presente tesis se estructura siguiendo dos estudios independientes a la vez que complementarios. Un primer estudio relac...

[Pulmonary arterial hypertension associated to human immunodeficiency virus].

Science.gov (United States)

Sandoval-Gutiérrez, José Luis; Santos-Martínez, Luis Efren; Rodríguez-Silverio, Juan; Baranda-Tovar, Francisco Martín; Rivera-Rosales, Rosa María; Flores-Murrieta, Francisco Javier

2015-01-01

From the advent of the highly effective antiretroviral treatment, the life expectancy of patients with human immunodeficiency virus has increased significantly. At present, the causes of death are non-infectious complications. Between them, the pulmonary arterial hypertension has a special importance. It is important early detection to establish the therapeutic, with the objective of preventing a fatal outcome to future. Copyright © 2013 Instituto Nacional de Cardiología Ignacio Chávez. Published by Masson Doyma México S.A. All rights reserved.

Institutions and Caudillos: Relations between the Deputies of the Twenty-eighth Legislature and President Venustiano Carranza

Directory of Open Access Journals (Sweden)

Ignacio Marván Laborde

2001-10-01

Full Text Available This article reviews the behavior of the Mexican Chamber of Deputies, from September, 1918 to December 1920 (XXVIII Legislature, and its relationship with the head of the executive branch, Venustiano Carranza. Challenging the traditional historiography of the period, Ignacio Marvan concludes that the dynamics of the executive-legislative relationship depended less on politician's leadership or absence of modern political parties than on institutional factors, such as the constitutional framework, the electoral system, the no reelection rule for the executive, and the presidential political cycle.

[Cardiology writings in New Spain and in the first century of the Independent period].

Science.gov (United States)

de Micheli, Alfredo

2015-01-01

The first writings on cardioangiology found in public and private libraries of New Spain from the xvi century to the first century of the Independent period in Mexico are mentioned. These go from the truly incunabular ones, books printed until the year 1500, to the physiology treatises published by European authors in the xvii and xviii centuries, as well as the cardiology texts from French authors of the first half of the xix century. The writings were depicted in the catalogs of the University library, founded in 1762, as well as in the library of a master builder of the Metropolitan Cathedral of the xvii century and that of a physician of the xviii century, Dr. José Ignacio Bartolache. The latter, in turn, edited for a brief period, from October 1772 to February 1773, a scientific-medical journal, «Mercurio Volante», which was the first scientific-hebdomadary publication in the Americas. Likewise, in the libraries of New Spain, several European scientific journals could be found, such as the one edited by the abbot Rozier, in which the initial writings of Lavoisier appeared. The exchange of ideas and knowledge, pointed out herein, attests to the always enthused interest of given individuals from New Spain on the boundless and passionate domains of cardioangiology. Copyright © 2013 Instituto Nacional de Cardiología Ignacio Chávez. Published by Masson Doyma México S.A. All rights reserved.

Ciclovía y carril bus en el VAO de la C58

OpenAIRE

Moreno Carral, Cristóbal

2017-01-01

El proyecto de la "ciclovía y carril bus en la infraestructura del VAO de la C58" se inicia en el taller PCH Ciutat Meridiana como una manera de mejorar el lugar gracias a la conectividad. Se desarrolla como PFC con Claudi Aguiló (Construcción) como tutor y Xavier Matilla (Urbanismo) e Ignacio Costales (Estructura) como asesores. El proyecto consiste en la adaptación de la infraestructura del VAO mediante la creación de nuevos accesos (Proyecto urbano) que puedan dotar a la plataforma existen...

La República de los historiadores del Paraguay posbélico

OpenAIRE

Telesca, Ignacio

2015-01-01

En ocasión del bicentenario de la adopción de la República como sistema de gobierno, e independiente tanto de España como de Buenos Aires, este artículo reflexiona sobre como los historiadores paraguayos de fines de siglo XIX reflexionaron sobre el tema, relacionándolo con la adopción de un nuevo sistema de gobierno con la constitución de 1870 (calco de la argentina). Fil: Telesca, Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - CONICET ...

Estrategia educativa para la prevención del parasitismo en edades pediátricas

OpenAIRE

Estrada Rodríguez, Janice; Amargós Ramírez, Jaqueline; Cabrera Fernández, Sonia; Peña Marrero, Mahé; Rubio López, Elena

2011-01-01

Fundamento: entre las enfermedades infecciosas, las producidas por parásitos constituyen un problema médico-social que afecta no sólo a los países subdesarrollados sino a países de alto desarrollo económico. Objetivo: elevar el nivel de conocimiento sobre medidas de control en el parasitismo. Método: se realizó un estudio de intervención educativa, diseñado al respecto y aplicado a un grupo de madres en el consultorio No 4 del Policlínico Ignacio Agramonte, Municipio Camagüey, desde septiembr...

Dos personajes: un pensamiento educativo latinoamericano

Directory of Open Access Journals (Sweden)

Roxana Morales Bonilla

2005-01-01

Full Text Available En este ensayo, se analiza el aporte que los pedagogos Paulo Freire e Ignacio Martín-Baró, brindaron a la educación latinoamericana. Su labor educativa plantea alternativas pedagógicas contestatarias que luchan contra la injusticia social, económica, política y cultural. Este enfoque propone metodologías participativas y liberadoras que ofrecen contenidos socialmente emancipadores. De tal forma esta nueva visión produce una reinterpretación y organización de los procesos pedagógicos vigentes.

Reducción de la morbilidad y de los costos hospitalarios en cirugía cardiaca, mediante una estrategia prequirúrgica ambulatoria

OpenAIRE

Ávila-Vanzzini,Nydia; Kuri-Alfaro,Jorge; Rodríguez-Chávez,Laura Leticia; Meléndez-Ramírez,Gabriela; Trevethan-Cravioto,Sergio; Quiroz-Martínez,Alejandro; Herrera-Bello,Héctor; Herrera-Alarcón,Valentín; Martínez-Hernández,Humberto; Martínez-Ríos,Marco Antonio

2010-01-01

Los pacientes que van a una cirugía electiva de corazón, se internan a través de una lista de espera de admisión hospitalaria. Desde 1999 existe en el Instituto Nacional de Cardiología Ignacio Chávez, la "vía rápida de internamiento" para pacientes de bajo riesgo quirúrgico, que en el 2004 se extendió a riesgo moderado, tomando como base criterios propios y criterios internacionalmente aceptados. Objetivos: 1) comparar las dos alternativas de internamiento utilizadas actualmente: vía de inter...

[Value of the optical coherence tomography in the treatment guided of the stent failure. Case report].

Science.gov (United States)

Macías, Enrico; Tellez, Alejandro; Ochoa, Jorge; Ortíz, José E

2014-01-01

Since the advent of bare metal and drug-eluting stents, the surgical revascularization have declined considerably, however the thrombosis and in-stent restenosis are important complications of these devices. There are several factors that predispose to thrombosis and in-stent restenosis. Conventional angiography has serious limitations to determine the causes of stent failure. Optical coherence tomography is a very sensitive technique to determine the cause of thrombosis and in-stent restenosis. Copyright © 2013 Instituto Nacional de Cardiología Ignacio Chávez. Published by Masson Doyma México S.A. All rights reserved.

Normal or abnormal?, That is the question. Anatomical Osteomuscular Variants in Pediatric Radiology

International Nuclear Information System (INIS)

Ferreira, Hugo H; Garcia, Carlos A

2009-01-01

The objective is to describe some normal radiological variants that can cause diagnostic errors being interpreted as abnormal. Method: Its present some radiologic cases from San Ignacio Hospital and Reina Sofia Clinic of some patients with different clinical scenarios, in whom a simple radiograph was obtained. The radiologic findings are described. Results: Radiologic findings observed in these patients are normal anatomic variants, there were confirmed by a literature review. Conclusion: There are innumerable radiologic variants in the human body anatomy. It is important to know them, in order to prevent diagnostic errors and unnecessary studies.

The historical sponges Collection in the Museo Nacional de Ciencias Naturales (MNCN.CSIC: 1771–1939

Directory of Open Access Journals (Sweden)

J. I. Sánchez-Almazán

2017-09-01

Full Text Available A study of the collection of historical sponges of the Museo Nacional de Ciencias Naturales is presented. This collection contains material from three different periods of the institution: the era of the Royal Cabinet of Natural History (1771–1815, the late XIX and the first third of XX century, under the direction of Ignacio Bolívar. There are over 800 specimens (143 species of which 61 (26 species come from the first period: 41 directly from Pedro Franco Dávila Collection or the years when Dávila was director of the Royal Cabinet (1771–1786, 13 from Antonio Parra Collection, six from Rojas Clemente and one from the Malaspina Expedition (1789–1794. The Museum preserves 350 pieces, mostly microscopic slides (over 40 species, from the late nineteenth century. Finally, more than 400 (120 species entered along the period of Ignacio Bolívar as director of the Museum (1901–1939. This work has a threefold objective: 1. To continue the study of the material from the Royal Cabinet, which was commenced during 2003–2007. 2. To present the results of the recovery of more than 400 microscopic slides from late nineteenth and the beginning of XX, a work that commenced in 2014, together with a review of the rest of the material of this period. 3. To investigate the work of Francisco Ferrer Hernández, who highlighted during Bolívar period. Ferrer identified more of 280 specimens and described a dozen of new species.

Q and A. The future of nuclear energy in Spain

Energy Technology Data Exchange (ETDEWEB)

Kraev, Kamen [NucNet, The Independent Global Nuclear News Agency, Brussels (Belgium)

2017-11-15

Nuclear is the primary source of electricity in Spain. Wind is second. In the first quarter of 2017 nuclear's contribution was 25 %, but by the end of the year it will even out to more or less the same level of 2016. Nuclear is still very important for Spain's energy mix. The question is, what will happen with nuclear in the near future? NucNet spoke to Ignacio Araluce, president of Spanish industry group Foro Nuclear, about energy policy, plant shut-downs and how Spain's nuclear industry is successfully diversifying overseas.

La colección de partituras y manuscritos del Archivo Perdomo

Directory of Open Access Journals (Sweden)

Ellie Anne Duque

2000-01-01

Full Text Available La donación realizada por la familia de Monseñor José  Ignacio Perdomo (1917-1980, luego de su muerte, a la Biblioteca Luis Ángel Arango, está conformada por dos grupos de elementos musicales: instrumentos escritos (libros sobre música, partituras manuscritas, partituras publicadas y manuscritos varios. Lo referente a los instrumentos se encuentra debidamente exhibido, catalogado y reseñado; la colección se puede visitar en las sala de música de la Biblioteca o consultar a través de la publicación pertinente.

Les Sépharades du Maroc vus par les Espagnols: trois témoignages de l'époque du protectorat (1818, 1919, 1922)

OpenAIRE

Díaz-Mas, Paloma

2012-01-01

Analiza la imagen de los sefardíes en tres libros publicados en España durante los primeros años del Protectorado español en Marruecos: el del misionero franciscano Africano Fernández [seudónimo de Ramón Fernández Lestón], España en África y el peligro judío. Apuntes de un testigo, de 1918, profundamente antijudío; el del periodista liberal, relacionado con Ignacio Bauer y seguidor de las tesis de Ángel Pulido Manuel Ortega, Los hebreos de Marruecos, de 1919; y el del psiquiatra destinado com...

Escrituras de una colección de arte

OpenAIRE

Pedroni, Juan Cruz

2016-01-01

Esta investigación, toma como objeto de estudio a las relaciones entre la producción escrita sobre arte en Argentina y la colección de pintura argentina e italiana del siglo XX reunida por Ignacio Acquarone –empresario radicado en la ciudad entrerriana de Concordia y con actividad en el área entre 1948 y 1982–. El estudio se centra en las figuras y en los procedimientos mediante los cuales la colección fue representada en un corpus de textos heterogéneo en cuanto a sus emplazamientos genérico...

Erratum:Quality of life in long-term premenopausal early-stage breast cancer survivors from Spain. Effects of surgery and time since surgery.

Science.gov (United States)

Arraras, J I; Illarramendi, J J; de la Cruz, S; Asin, G; Manterola, A; Ibanez, B; Salgado, E; Cambra, K; Zarandona, U; Dominguez, M A; Vera, R

2016-01-01

In this article published in Volume 21, issue 5, the authors' names were incorrectly stated in the Pubmed abstract as: "Ignacio Arraras J(1), Juan Illarramendi J, de la Cruz S, Asin G, Manterola A, Ibanez B, Salgado E, Cambra K, Zarandona U, Angel Dominguez M, Vera R.". The correct authors' names are: "Arraras JI(1), Illarramendi JJ, de la Cruz S, Asin G, Manterola A, Ibanez B, Salgado E, Cambra K, Zarandona U, Dominguez MA, Vera R.". This error appeared only in the PubMed database and not in the print form of the Journal.

Competencias docentes en los profesores de medicina de la Universidad Michoacana de San Nicolás de Hidalgo

OpenAIRE

Manzo Rodríguez, Lidia; Rivera Michelena, Natacha; Rodríguez Orozco, Alain R

2006-01-01

Para la identificación de un grupo de competencias docentes básicas en los profesores que se desempeñan en la licenciatura en medicina en la Facultad de Medicina “Dr. Ignacio Chávez”, objetivo fundamental del presente trabajo, se utilizaron métodos teóricos y empíricos. Se aplicó una encuesta a una muestra seleccionada de docentes y alumnos. Se emplearon procedimientos estadísticos para el análisis de los resultados y se elaboraron tablas. A partir de la identificación de las necesidades de a...

Optimización de la estadificación clínico-patológica mediante la utilización del aclaramiento anglionar después del estudio de patología convencional en piezas quirúrgicas de pacientes con cáncer de colon y recto

OpenAIRE

Lombana Amaya, Luis Jorge

2010-01-01

Objetivo: Establecer las ventajas de la técnica de aclaramiento ganglionar como método complementario para la detección de ganglios linfáticos en el estudio anatomopatológico de especímenes quirúrgicos de pacientes con cáncer colo-rectal. Diseño: Estudio observacional descriptivo prospectivo. Lugar y población: Pacientes llevados a cirugía por cáncer colo-rectal en el Hospital Universitario San Ignacio y la Clínica Nueva entre Julio de 2009 y Diciembre de 2009. Intervención y medición: despué...

Diagnostic dilemma: Intracardiac mass in a woman with Behçet's syndrome.

Science.gov (United States)

Núñez-Cabarcas, Edilberto; López-Ruiz, Nilson; Ramírez-Rincón, Alex

2014-01-01

Intracardiac thrombosis is a rare manifestation of cardiac involvement in Behçet's disease, and it may be mistaken for a heart tumor. In this letter we present the case of a patient diagnosed with Behçet's disease who was incidentally found to have a mass in the right atrium suspicious of a cardiac tumor. Nevertheless, cardiac magnetic resonance showed a cardiac thrombus. Immunosuppressive therapy and anticoagulation were effective for thrombus resolution. Copyright © 2014 Instituto Nacional de Cardiología Ignacio Chávez. Published by Masson Doyma México S.A. All rights reserved.

Aspectos históricos de libros relevantes de la historia de la pediatría

OpenAIRE

Vargas Rubiano, Alfonso

2010-01-01

El comité Editorial de Pediatría, Diagnostico y Tratamiento, me ha solicitado la redacción del Prólogo para su segunda edición, "deseando que se haga mención de algunos aspectos históricos del desarrollo de la Pediatría en la Universidad Nacional de Colombia y la contribución a éste proceso del profesor José Ignacio Barberi y del Hospital de la Misericordia." Para cumplir tan obligante invitación de los profesores Edgar Rojas, Hector Ulloque, Fernando Sarmiento y Carlos Medina, he revisado la...

First discussion for fostering the photovoltaic energy in Mexico; Primer coloquio para el fomento de la energia fotovoltaica en Mexico

Energy Technology Data Exchange (ETDEWEB)

NONE

2007-06-15

The varied spheres (political, environmental, economic, scientific and social) day by day are looking for the key issues, which are going to make them to preserve or disappear either in the present or in the future. Therefore, it was carried out the first conversation in the State of Zacatecas, Mexico. Here there were shown different advances related to the renewable energies by those spheres. Generally speaking, it was in this event where there were gather together private and government organs in order to present every issue related to the use and to the promotion of the renewable energies. By these means, it was probed that the renewable energies are: the current market, the groundbreaking technology, the best option friendly-environment, the panacea for the society and for the improvement of the economy of many countries both developing countries and developed countries. The renewable energy topic is seen from different point of views. [Spanish] Las diferentes esferas que rigen el dia a dia; es decir, la politica, el medio ambiente, la economia, las ciencias y la sociedad, siempre estan en busca de cuestiones que las hagan crecer y evolucionar para asi seguir ocupando un espacio no solo en el presente sino tambien en el futuro. En esta ocasion fue en el primer coloquio, realizado en el Estado de Zacatecas, Mexico, donde dichas esferas se reunieron con el fin de mostrar sus diversos avances acerca de las energias fotovoltaicas. En otras palabras, fue en este coloquio donde se reunieron organos privados y gubernamentales con el fin de mostrar todo lo relacionado con el uso y la promocion de las energias renovables. Comprobando que las energias renovables son tanto: el mercado de hoy, la tecnologia de punta, la mejor opcion ambiental, la panacea para la sociedad y para la mejora de la economia de muchos paises en vias de desarrollo y de primer mundo. En estas ponencias no solo se habla de las energias renovables desde un aspecto cientifico, sino tambien financiero

CARACTERIZACIÓN MOLECULAR DE AISLADOS DE Sclerotium cepivorum MEDIANTE ANÁLISIS DEL POLIMORFISMO DE LOS FRAGMENTOS AMPLIFICADOS AL AZAR CARACTERIZACIÓN MOLECULAR DE AISLADOS DE Sclerotium cepivorum MEDIANTE ANÁLISIS DEL POLIMORFISMO DE LOS FRAGMENTOS AMPLIFICADOS AL AZAR

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Francisco Luna Martínez

2012-02-01

Full Text Available Sclerotium cepivorum is the etiologic agent of garlic "white rot". Knowledge of genetic variability of the fungus may help to design efficient strategies for its control. For this study, 47 isolates obtained from Aguascalientes, Guanajuato and Zacatecas as well as 7 reference strains were used. Morphological characterization was that established for this organism. PCR amplification of ribosomal 18S gene generated a DNA fragment of a size close to 2.2 Kb in all isolates and reference strains, as compared to that of 1.8 Kb amplified in control fungi. Variability was analyzed by Random Amplified Polymorphism Distance (RAPD. Isolates exhibited a similar gene pattern with an average dissimilitud of 9.4%. Some of the bands identified here can be useful as molecular markers in identification studies of this plant pathogen. Dendogram analysis of data revealed a tendency of isolates to group according to their geographic procedence.Sclerotium cepivorum es el agente causal de la "pudrición blanca" del ajo. El conocer su variabilidad genética permitirá buscar estrategias de control mas eficientes. Se utilizaron 47 aislados de S. cepivorum provenientes de Aguascalientes, Guanajuato, Zacatecas y 7 cepas de referencia. El análisis morfológico correspondió al establecido para este hongo. Se amplificó el gen ribosomal 18S dando un tamaño cercano a 2.2 kb en todos los aislados y cepas de S. cepivorum, en los hongos control fue de aproximadamente 18 kb. El grado de variabilidad se analizó por medio del Polimorfismo de los Fragmentos Amplificados al Azar (RAPD. Los aislados de S. cepivorum dieron un patrón génico similar, pero muy diferente al que muestran los otros hongos fitopatógenos. La disimilitud genética promedio fue de 9.4%. Se proponen algunas bandas como marcadores moleculares para identificar al fitopatógeno. En el dendograma se aprecia que hay tendencia de los aislados a agruparse según el estado de donde provienen.

FORJAR UN CUERPO TRABAJADOR. ETNOGRAFÍA RETROSPECTIVA SOBRE LA CONSTRUCCIÓN DE MASCULINIDADES

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Juan Miguel Sarricolea Torres

2017-01-01

Full Text Available A través de una etnografía retrospectiva realizada en Jerez, Zacatecas, con un grupo de varones “viejos” con experiencia migratoria, argumento que la construcción social de las masculinidades es recreada y puesta en marcha por ellos y por otros mediante la construcción física y simbólica de cuerpos trabajadores. A través de la reconstrucción del ciclo cultural de vida y las trayectorias laborales y familiares muestro que los varones construyen y significan sus cuerpos mediante dos mandatos culturales de la masculinidad (trabajadores y proveedores: noción que enfatiza la existencia de ciertas regularidades en el sistema de género, en este caso, constantes de la masculinidad (Rosas, 2008.

Evaluation of the shielding of dental X-rays units

International Nuclear Information System (INIS)

Medrano, E.; Vega C, H. R.; Letechipia de L, C.; Hernandez D, V. M.; Salas L, M. A.

2014-08-01

The capacity of the walls of the dental radio-diagnostic rooms has been determined, to diminish the dose levels during the use of the X-rays equipment s. The study was carried out in the Dentistry Academic Unit of the campus Siglo X XI of the Universidad Autonoma de Zacatecas. The X-rays equipment s are a learning tool for the dentistry students and they are also used for offering health services to the population; for this reason is important to verify that the dose levels outside of the room walls are safe. During the evaluation process were used conservative approaches without prejudice of the thickness necessary in benefit of the radiological protection. Of the evaluation was found that all the walls satisfy their function thoroughly like barriers against the X-rays. (Author)

Evaluation of the shielding of dental X-rays units; Evaluacion del blindaje de unidades de rayos X dentales

Energy Technology Data Exchange (ETDEWEB)

Medrano, E.; Vega C, H. R.; Letechipia de L, C.; Hernandez D, V. M.; Salas L, M. A., E-mail: edumeco@yahoo.com.mx [Universidad Autonoma de Zacatecas, Apdo. Postal 336, 98000 Zacatecas (Mexico)

2014-08-15

The capacity of the walls of the dental radio-diagnostic rooms has been determined, to diminish the dose levels during the use of the X-rays equipment s. The study was carried out in the Dentistry Academic Unit of the campus Siglo X XI of the Universidad Autonoma de Zacatecas. The X-rays equipment s are a learning tool for the dentistry students and they are also used for offering health services to the population; for this reason is important to verify that the dose levels outside of the room walls are safe. During the evaluation process were used conservative approaches without prejudice of the thickness necessary in benefit of the radiological protection. Of the evaluation was found that all the walls satisfy their function thoroughly like barriers against the X-rays. (Author)

[From the medieval hospitals hospices to modern National public Health Institutes].

Science.gov (United States)

de Micheli, Alfredo

2016-01-01

Since the most ancient times, hospital constructions and progresses in the clinical practice advanced pari passu. We can find exampless of this statement in Greek regions as well as in Greek citie overseas. Thus, during the renaissance, great figures ot that time converged in Italy: The genius Leonardo da Vinci (1452-1519) and Leon Battista Alberti (1404-1472), a humanist and innovator of architecture. Michelangelo Buonarroti (1475-1564) and his contemporany artists performed anatomical dissection to perfect their art by studying the human body. Anatomical studies flourished at the University of Padua, driven by the Flemish Master. Based on the rigorous study of the anatomical substrate, the studies on the function of the already known organic structures excelled in the xvii century. That century started with the revelation of the major blood circulation by the British physician William Harvey, alumni of the University of Padua, and continued with the description of the minior or pulmonary circulation by ancient or contemporany authors and of the peripheral connections between the arterial and the venous system (Marcelo Malpighi, 1661). All these researchers, and others, were membres of the University of Padua, were the beneficial influence of the teachings of Galileo persisted. In the following centuries, together with the embryological and normal anatomy, the pathological anatomy, systematized by G.B. Morgani, became the cornerstone of the clinical practice. The model of the ancient hospitals evolved to ward the National Institutes of Health in Mexico fostered by Dr. Ignacio Chávez. Copyright © 2014 Instituto Nacional de Cardiología Ignacio Chávez. Published by Masson Doyma México S.A. All rights reserved.

A New capitalism in Brazil? Fusions & acquisitions on Lula government

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José Carlos Martines Belieiro Junior

2014-06-01

Full Text Available This paper aims analyze the phenomenon of fusions and acquisitions of companies in Brazil during the government of ex-president Luis Ignacio Lula da Silva, from 2003 to 2010. The adopted point of view is the one of relations between the State an d the economy trying to investigate what the new role of the private capital in the contemporary Brazil. The basic hypothesis that guide this work is to explain the fusions and acquisitions in a broader context of State support to the process of fusions and acquisitions as a new way of global insertion of Brazilian capitalism in a moment of international competitiveness.

Diagnóstico del empleo de las tecnologías de la información y la comunicación en el proceso de enseñanza-aprendizaje de la electrónica en el área de la Educación para el Trabajo en la secundaria

OpenAIRE

Guizado Carmona, Federico Édgar; Cruzata Martinez, Alejandro

2017-01-01

El presente artículo ofrece resultados de una investigación de maestría en Ciencias de la Educación, desarrollada en la Universidad San Ignacio Loyola. Metodológicamente, la investigación consideró el enfoque cualitativo con carácter aplicado educativo. Las categorías de estudio fueron el proceso de enseñanza-aprendizaje de electrónica y la implementación de las tecnologías de la información y la comunicación (TIC) en la educación. Los sujetos de la muestra se seleccionaron con la técnica de ...

ENTRE EL VENDAVAL CLIMÁTICO Y LA TORMENTA POLÍTICA: ELECCIONES PRESIDENCIALES Y FACCIONALISMO POLÍTICO EN CARTAGENA EN 1836

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Edwin Monsalvo

2013-07-01

Full Text Available Este trabajo se propone describir el proceso electoral de 1836 en Cartagena de Indias (Colombia que significó la transición de la Presidencia de la República de Francisco de Paula Santander a José Ignacio de Márquez, para mostrar el papel que jugaron el poder provincial en la definición de las mismas. Nuestra hipótesis es que en la provincia de Cartagena, el entramado de los poderes locales tuvo el control de las elecciones parroquiales y ello ayudó a definir el resultado electoral en favor de la facción de los liberales moderados.

[Right-side aortic arch with aberrant left subclavian artery and Kommerell's diverticulum. A cause of vascular ring].

Science.gov (United States)

Tamayo-Espinosa, Tania; Erdmenger-Orellana, Julio; Becerra-Becerra, Rosario; Balderrabano-Saucedo, Norma; Segura-Standford, Begoña

The right-side aortic arch may be associated with aberrant left subclavian artery, in some cases this artery originates from an aneurismal dilation of the aorta called Kommerell's diverticulum. A report is presented on 2 cases of vascular ring formed by a right-side aortic arch, anomalous left subclavian artery, Kommerell's diverticulum and left patent ductus arteriosus. A review the literature was also performed as regards the embryological development and the imaging methods used to help in the diagnosis of this rare vascular anomaly. Copyright © 2017 Instituto Nacional de Cardiología Ignacio Chávez. Publicado por Masson Doyma México S.A. All rights reserved.

2015. 2. Por qué celebrar primarias

OpenAIRE

Sanz Díaz, Benito

2015-01-01

¿Por qué celebrar primarias? ¿Beneficia o perjudica a las organizaciones y partidos que las promueven?, ¿Mejora la participación?, ¿La elección de los dirigentes evita la oligarquización y la Ley de Hierro de los partidos políticos que enunció Robert Michels? Un sistema de selección de candidatos con origen en la política norteamericana, fue adaptado por el PSOE, y a continuación iría extendiéndose su práctica a los todos los partidos políticos. Ignacio Urquizu señalaba sobre l...

Eficiencia financiera de la administración pública: el caso de región occidental

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Fernando García López

2014-12-01

Full Text Available Proper management of government budgets ensures sustained economic growth of the governed entities; so the purpose of this research is to determine the degree of financial efficiency of the public administration of the states that make up the Western region of Mexico. The main results shows that the analyzed states continue to maintain a strong dependence of federal resources, the most autonomous state followed by Querétaro Aguascalientes. Regarding the investment capacity to Aguascalientes and Colima is seen as the best states weighted in this area; Michoacan is the state with more bureaucratic cost (44.76% followed by Guanajuato (34.83% and Jalisco (33.32%; while states that exceed 100 from the sum of these two indicators are on or are spending Michoacán first followed by Nayarit, Jalisco, Guanajuato and Zacatecas.

La lectura del libro natural: apuntes para una historia de los estudios anatómicos y quirúrgicos en Buenos Aires (1870-1895 Reading the 'natural book': notes towards a history of anatomical and surgical studies in Buenos Aires (1870-1895

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Pablo Souza

2010-12-01

Full Text Available Explora las transformaciones en los estudios anatómicos y quirúrgicos de la escuela médica de Buenos Aires durante la segunda mitad del siglo XIX. Se focaliza en las tensiones entre el modo de transmitir estos conocimientos y las cambiantes cosmovisiones quirúrgicas de los grupos más visibles de médicos durante la década de 1870. En este contexto, se analiza la influencia de las tradiciones quirúrgicas europeas, con énfasis en la influencia de la tradición parisina, a partir del viaje de estudios del joven Ignacio Pirovano, más tarde catedrático de anatomía y 'cirujano mayor' en Buenos Aires. Se presta especial atención a los cambios en las formas de la experiencia y en las condiciones materiales promovidas por la introducción de la cirugía antiséptica, algunos anestésicos y la resección de huesos.The article explores transformations in anatomical and surgical studies within the school of medical thought in Buenos Aires in the latter half of the nineteenth century, focusing on the tension between how this knowledge should be conveyed and the changing surgical worldviews of the most visible medical groups of the 1870s. The influence of European surgical traditions is analyzed within this context, particularly the influence of the Paris tradition, which can be linked to study abroad by young Ignacio Pirovano, who would later become professor of anatomy and major surgery in Buenos Aires. The article pays special attention to changes in forms of experiments and in the new material conditions afforded through the introduction of antiseptic surgery, some types of anesthesia, and bone resection.

Agresividad escolar e ideas suicidas en escuelas secundarias

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Beatriz Mabel Pacheco Amigó

2015-08-01

Full Text Available ResumenLos adolescentes presentan una amplia gama de dificultades en el proceso de desarrollo, evolución y adaptación, por lo que no se puede dejar de lado la agresividad escolar como fenómeno social que aqueja y delinea un problema manifiesto en cualquier entorno escolar donde se puede encontrar. El objetivo del presente estudio es analizar los diversos factores sociales que intervienen en el proceso de la agresividad escolar, pero a la vez identificar las ideas suicidas que presentan los alumnos que han sido víctimas de agresión en la institución educativa. Para llegar a tal objetivo se utilizaron diversas técnicas de evaluación, entre las que destacan encuestas semiestructuradas y The Scale for Suicide Ideation, las cuales ayudaron a establecer escalas estimativas de incidencia aproximada de actitudes referidas a la muerte, planeación o tentativa suicida en escuelas secundarias privadas de las ciudades de Guadalupe y Zacatecas. En la muestra estudiada se pudo detectar el apoyo escaso de los familiares en torno a la problemática; así como también los altos niveles de ansiedad e idea de planeación suicida que refieren los adolescentes. AbstractAdolescents have a wide range of difficulties in their development process, evolution and adaptation; bullying is a social phenomenon which affects and outlines a clear problem that can be found in any school environment, therefore, it cannot be disregarded. The aim of this paper is to analyze various social factors involved in bullying, but at the same time, to identify suicidal thoughts in students who have been victims of aggression at school. To accomplish such objective, various evaluation techniques which include semi-structured interviews and The Scale for Suicide Ideation, were used; they helped establish the approximate estimated percentage scale of suicidal behavior or attempts in private secondary schools in the cities of Guadalupe and Zacatecas. In the

[Pathophysiology of hypertension secondary to obesity].

Science.gov (United States)

García Casilimas, Guihovany Alberto; Martin, Daniel Augusto; Martínez, María Alejandra; Merchán, Claudia Rocío; Mayorga, Carol Anne; Barragán, Andrés Felipe

The obesity is a problem with a high morbidity and mortality all over the world. It has now been designated as a cardiovascular risk factor. It often predisposes the development of many diseases that reduce quality of life, such as hypertension, dyslipidaemia, and diabetes. These diseases are associated with some of the criteria that should be considered in the diagnosis of metabolic syndrome. During this review, explanations will be presented on the relationship between obesity, metabolic syndrome, and the development of hypertension from neurohumoral, biochemical and mechanical concepts. Copyright © 2017 Instituto Nacional de Cardiología Ignacio Chávez. Publicado por Masson Doyma México S.A. All rights reserved.

Next generation sequencing for molecular confirmation of hereditary sudden cardiac death syndromes.

Science.gov (United States)

Márquez, Manlio F; Cruz-Robles, David; Ines-Real, Selene; Vargas-Alarcón, Gilberto; Cárdenas, Manuel

2015-01-01

Hereditary sudden cardiac death syndromes comprise a wide range of diseases resulting from alteration in cardiac ion channels. Genes involved in these syndromes represent diverse mutations that cause the altered encoding of the diverse proteins constituting these channels, thus affecting directly the currents of the corresponding ions. In the present article we will briefly review how to arrive to a clinical diagnosis and we will present the results of molecular genetic studies made in Mexican subjects attending the SCD Syndromes Clinic of the National Institute of Cardiology of Mexico City. Copyright © 2014 Instituto Nacional de Cardiología Ignacio Chávez. Published by Masson Doyma México S.A. All rights reserved.

Aspectos históricos de libros relevantes de la historia de la Pediatría

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Alfonso Vargas Rubiano

1999-10-01

Full Text Available El comité Editorial de Pediatría, Diagnostico y Tratamiento, me ha solicitado la redacción del Prólogo para su segunda edición, "deseando que se haga mención de algunos aspectos históricos del desarrollo de la Pediatría en la Universidad Nacional de Colombia y la contribución a éste proceso del profesor José Ignacio Barberi y del Hospital de la Misericordia." Para cumplir tan obligante invitación de los profesores Edgar Rojas, Hector Ulloque, Fernando Sarmiento y Carlos Medina, he revisado la bibliografia pediátrica de nuestra universidad -desde 1828- y del Hospital de la Misericordia en la actual centuria.

Paradojas de la migración internacional y el medio ambiente

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Rodolfo García-Zamora

2007-01-01

Full Text Available En el presente artículo se analiza la relación entre migración internacional y degradación ambiental, se estudia el caso de Zacatecas. Se identifican tres paradojas: a factores como la degradación ecológica, la escasez de recursos naturales o la presión del crecimiento poblacional no explican la migración internacional; contrariamente, las causas se encuentran en la insostenibilidad social derivada de las relacione de producción; b merced a la migración, la fuerza de trabajo pasa de ser un recurso natural renovable a uno no renovable, en particular para la dinámica socioeconómica de los lugares de origen, y c la migración puede gestar el empoderamiento de las organizaciones de migrantes en tareas vinculadas a la reversión de la degradación ambiental.

Mexican experience on migration and development 1990-2013

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Rodolfo García Zamora

Full Text Available After 40 years of a long rising emigration from Mexico to the United States, the number of Mexicans increased to 12 million in 2006, while the increased input of remittances reached $26 million dollars in 2007. Yet, the increasing migration and remittances mainly in Zacatecas and Michoacan states do not achieve economic and social development because of the persistent backwardness, unemployment and marginalization. It demands the need for new Policies of Development, Migration and Human Rights that allow exercising the right to not emigrate in a medium term. Positive products of this long migration are the Mexican Migrant Clubs and their Federations that elaborated the concrete development proposals. Whereas, the possibility that these proposals can become a Development, Migration and Human Rights, Comprehensive and Long Term State Policy will depend on the capacity and participation of Mexican Civil Society and the Transnational Communities in both countries.

Neurocirugía, un arte y una ciencia“Nuestro modo de proceder” Ignacio de Loyola

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Germán Peña Quiñones

2011-10-01

Full Text Available

Cada vez que nos referimos a nuestra especialidad en artículos, trabajos o presentaciones hablamos del estado del arte de la neurocirugía y cuando la describimos, nos referimos a la especialidad como una ciencia y un arte; cuando pensamos en la palabra “ciencia”, el concepto es claro, no se nos hace necesario buscar explicaciones porque sabemos que nos referimos a “un saber o erudición” [1] o a “un conocimiento cierto de las cosas por sus principios y causas” [1].

Pienso que pocas veces nos detenemos a evaluar el concepto de “arte” y sobre todo en relación a la neurocirugía que es el motivo de este trabajo.Antes de iniciar el análisis del concepto de arte de la neurocirugía, me parece pertinente establecer qué es la neurocirugía? y quienes somos los neu-rocirujanos? según los cánones actuales por los que se califica la medicina y sus especialidades.

Neurocirugía, un arte y una ciencia“Nuestro modo de proceder” Ignacio de Loyola

OpenAIRE

Germán Peña Quiñones

2011-01-01

Cada vez que nos referimos a nuestra especialidad en artículos, trabajos o presentaciones hablamos del estado del arte de la neurocirugía y cuando la describimos, nos referimos a la especialidad como una ciencia y un arte; cuando pensamos en la palabra “ciencia”, el concepto es claro, no se nos hace necesario buscar explicaciones porque sabemos que nos referimos a “un saber o erudición” [1] o a “un conocimiento cierto de las cosas por sus principios y causas” [1].

P...

Rb-Sr geochronology and geochemical characteristics of mafic dikes in the Nova Lacerda and Conquista D'Oeste region, Mato Grosso, SW Amazonian Craton; Geocronologia Rb-Sr e caracteristicas geoquimicas dos diques maficos da regiao de Nova Lacerda e Conquista D'Oeste (MT), porcao sudoeste do Craton Amazonico

Energy Technology Data Exchange (ETDEWEB)

Costa, Paulo Cesar Correa da; Matos, Joao Batista de [Universidade Federal de Mato Grosso (UFMT), Cuiaba, MT (Brazil). Dept. de Recursos Minerais; Grupo de Pesquisas em Evolucao Crustal e Metalogenia Guapore, Cuiaba, MT (Brazil)], e-mail: pccorrea@ufmt.br, e-mail: jmatos@cpd.ufmt.br; Girardi, Vicente Antonio Vitorio [Universidade de Sao Paulo (USP), SP (Brazil). Inst. de Geociencias. Dept. de Mineralogia e Geotectonica], e-mail: girardi@usp.br; Ruiz, Amarildo Salina [Universidade Federal de Mato Grosso (UFMT), Cuiaba, MT (Brazil). Dept. de Geologia Geral; Grupo de Pesquisas em Evolucao Crustal e Metalogenia Guapore, Cuiaba, MT (Brazil)], e-mail: asruiz@rc.unesp.br

2009-07-01

In the Nova Lacerda and Conquista D'Oeste regions, Mato Grosso State, SW part of the Amazonian Craton, mafic dikes trending NNW intrude the Nova Lacerda Granite (1462{+-}12 Ma), within the Jauru Domain, in the Rondonia-San Ignacio Province (1.55 - 1.3 Ga). The mafic swarm comprises diabases, metadiabases and amphibolites. Metadiabases originated from uralitization of diabases. These rocks have tholeiitic affinity and predominant basaltic composition. Some samples are andesi-basalts. The ages of diabases and metabasites are 1380 {+-} 32 Ma and 1330 {+-} 120 Ma respectively. Geochemical data indicate that the compositional variation of diabases and metadiadases is due to fractional crystallization of evolved tholeiitic magmas. The origin of the basaltic magmas is related to a heterogeneous mantle source. (author)

[Reading the 'natural book': notes towards a history of anatomical and surgical studies in Buenos Aires (1870-1895)].

Science.gov (United States)

Souza, Pablo; Hurtado, Diego

2010-12-01

The article explores transformations in anatomical and surgical studies within the school of medical thought in Buenos Aires in the latter half of the nineteenth century, focusing on the tension between how this knowledge should be conveyed and the changing surgical worldviews of the most visible medical groups of the 1870s. The influence of European surgical traditions is analyzed within this context, particularly the influence of the Paris tradition, which can be linked to study abroad by young Ignacio Pirovano, who would later become professor of anatomy and major surgery in Buenos Aires. The article pays special attention to changes in forms of experiments and in the new material conditions afforded through the introduction of antiseptic surgery, some types of anesthesia, and bone resection.

The Territory of Quintana Roo. Colo­nization and Military Control Attempts in the Selva Maya (1888-1902

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Carlos Macías Richard

1999-07-01

Full Text Available The  federal territory of Quintana Roo was established in 1902, shortly after federal forces, under General Ignacio A. Bravo, concluded a long and intense campaign against one of the country's oldest rebel groups: the Maya from the Selva Oriental of the Yucatan Península. This article analyzes the successive military attempts to finally overtake the Maya sanctuary Chan Santa Cruz, where the Speaking Cross is located, which occurred within the wider central attempts to colonize the  peninsula. Furthermore, the arti­cle includes and makes a contextual interpretation of  the individual profiles  of  the  last campaign's leaders, in order to explain the "militarized" beginnings of  the  Quintana Roo government.

COMPOSITION OF THE JOINT ADVISORY APPEALS BOARD

CERN Multimedia

2004-01-01

2004 Exercise Appointed by the Director-GeneralAppointed by the Staff Association Members Lars Leistam / TS Irene Seis / IT 1st deputies Christian Fabjan / PH Jean-François Michaud / TS 2nd deputies Mats Møller / IT Gérard Antoinet / SC Dr Leistam and Mrs Seis have drawn up the following list of staff members from among whom the Chairperson of the Board may be chosen when required : Etienne Carlier / AB Ignacio Reguero / IT Philippe Charpentier / PH Alasdair smith / PH Paula Carvalho Correia / FI Pierre Strubin / AT Hans De Groot / PH Emmanuel Tsesmelis / AT Catherine Delamare / IT Elena Wildner / AT Mediators [see Administrative Circular N° 6 (Rev. 1) entitled "Review procedure"] will also be selected from this list of ten staff members.

Analysis of Auto ignition of Hydrogen-Air Mixture using Direct Numerical Simulation; Analisis de la Autoignicion de Mezclas Hidrogeno-Aire mediante Simulacion Numerica directa

Energy Technology Data Exchange (ETDEWEB)

Hernandez Vera, I.; Paola, G. de; Jimenez Sanchez, C.

2008-07-01

This document reproduces the final project of Ignacio Hernandez Vera, presented on September 25, 2008, for the obtention of the engineer degree of the Carlos III University of Madrid. A study on the auto ignition process of different hydrogen-air mixtures for different simple geometries is carried out by means of direct numerical simulation. Auto ignition time is compared for different configurations and it is discussed the influence that different parameters have on it, such as temperature or transport phenomena. Afterwards a new reduced chemical mechanism for the simulation of this phenomenon is tested and assessed. Finally the mixing and ignition process is tackled using different mixture fractions and its implications on the construction of combustion models briefly discussed. (Author) 15 refs.

Isotopic and chemical evidence for three accretionary magmatic arcs ( 1.79 - 1.42 Ga) in the SW Amazon Craton, Mato Grosso State, Brazil

International Nuclear Information System (INIS)

Geraldes, Mauro Cesar; Teixeira, Wilson; Schmus, William Randall van

2000-01-01

Twenty-one U/Pb ages of granitoids in the SW Amazon craton define three crustal accretionary events during the Paleo-and Mesoproterozoic that represent significant portions of the Rio Negro-Juruena Province and the Rondonian/San Ignacio province. Two events refer to the Rio Negro-Juruena province: The Alto Jauru greenstone belt comprises acid volcanics and tonalite to granite gneisses with U/Pb ages from 1790 to 1750 Ma. Sm/Nd isotopic data (e N -d (t) from +2.6 to +2.2 and T DM from 2.0 to 1.80 Ga) indicate a volcanic arc with juvenile signatures for these units. The second event (Cachoeirinha arc) comprises granites to tonalites with U/Pb ages from 1580 to 1530 Ma. Sm/Nd results. (author)

Acarine infracommunities associated with the Mexican free-tailed bat, Tadarida brasiliensis mexicana (Chiroptera: Molossidae) in arid regions of Mexico.

Science.gov (United States)

Guzmán-Cornejo, C; García-Prieto, L; Morales-Malacara, J B; Pérez-Ponce De León, G

2003-11-01

The Mexican free-tailed bat, Tadarida brasiliensis mexicana, is one of the most widely distributed bats, and its range includes the whole Mexican territory. Ectoparasites of this bat have been the subject of isolated reports, but no studies of its community ecology have been conducted. The acarine infracommunities associated with this bat were analyzed, comparing bat populations from three arid regions of Mexico: an abandoned factory in Nombre de Dios, Durango; a cave in Santiago, Nuevo León; and a church in Concepción del Oro, Zacatecas. The acarine infracommunity in Nuevo Le6n's bats exhibited the highest levels of diversity as reflected by a higher richness, a lower dominance, and a moderate and relatively homogeneous abundance in this locality in relation to the other two. This pattern is influenced by stable cave conditions relative to artificial habitats. Notwithstanding, further studies are required to determine whether or not different habitat conditions are a primary factor in the process of structuring the acari infracommunities.

Absorbed dose measurements in mammography using Monte Carlo method and ZrO2+PTFE dosemeters

International Nuclear Information System (INIS)

Duran M, H. A.; Hernandez O, M.; Salas L, M. A.; Hernandez D, V. M.; Vega C, H. R.; Pinedo S, A.; Ventura M, J.; Chacon, F.; Rivera M, T.

2009-10-01

Mammography test is a central tool for breast cancer diagnostic. In addition, programs are conducted periodically to detect the asymptomatic women in certain age groups; these programs have shown a reduction on breast cancer mortality. Early detection of breast cancer is achieved through a mammography, which contrasts the glandular and adipose tissue with a probable calcification. The parameters used for mammography are based on the thickness and density of the breast, their values depend on the voltage, current, focal spot and anode-filter combination. To achieve an image clear and a minimum dose must be chosen appropriate irradiation conditions. Risk associated with mammography should not be ignored. This study was performed in the General Hospital No. 1 IMSS in Zacatecas. Was used a glucose phantom and measured air Kerma at the entrance of the breast that was calculated using Monte Carlo methods and ZrO 2 +PTFE thermoluminescent dosemeters, this calculation was completed with calculating the absorbed dose. (author)

Deserción escolar y menor infractor

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Martha Angélica Ramírez Salazar

2015-05-01

Full Text Available The main reason for designing this research was to capture school and social exclusion with young people who are to become juvenile offenders. A qualitative approach was used, with methods as narratives, focus groups and depth interviews. The people whom we worked, was those who are being held in the detention center in Zacatecas, for the commission of crime. Results showed that low education level juvenile offender, has a school life with traits such as lack of interest, poor grades, no relationship between classroom content and daily life; very aggressive teachers, and influenced by peer groups. Their life is a reproduction of familiar academic history. Among the factors that influence them in school dropout were economics, lack of interest, poor performance, behavioral problems, while the factors that influence the offenses were drug abuse, domestic violence, precarious families dissociated. Findings point to a strong relationship between school dropout and commission of crime.

Analysis of the sediments of the Julian Adame Alatorre dam by the INAA

International Nuclear Information System (INIS)

Oliva, J.E.; Lugo, J.F.; Mireles, F.; Quirino, L.L.; Davila, J.I.; Pinedo, J.L.; Rios, C.; Miller, W.H.

2003-01-01

Its were taken eight samples of sediment of the Julian Adame Alatorre dam located in the Villanueva municipality, in the State of Zacatecas, Mexico; with the end of determining the presence of elements of anthropogenic origin, as well as the concentration of the same ones. It was used the Instrumental neutron activation analysis (AANI) with a flow of thermal neutrons of 8 x 10 13 and 5 x 10 13 n cm -2 s -1 . With the purpose of determining the concentration of these elements at level of traces; finding presence of 32 elements among which its were find elements in greater concentrations and others at level of traces. Of these 32 elements, five of anthropogenic origin were identified which its were: Cr, Co, Zn, As and Mn; but that whose concentration is very low, in comparison with the one reported in other places of the world. In this work there are presented the obtained results of the elementary analysis of this samples. (Author)

Dose in conventional radiography; Dosis en radiografia convencional

Energy Technology Data Exchange (ETDEWEB)

Acuna D, E.; Padilla R, Z. P.; Escareno J, E.; Vega C, H. R. [Universidad Autonoma de Zacatecas, Unidad Academica de Estudios Nucleares, Calle Cipres No. 10, Fracc. La Penuela, 98000 Zacatecas (Mexico)

2011-10-15

It has been pointed out that medical exposures are the most significant sources of exposure to ionizing radiation for the general population. Inside the medical exposures the most important is the X-ray use for diagnosis, which is by far the largest contribution to the average dose received by the population. From all studies performed in radiology the chest radiography is the most abundant. In an X-ray machine, voltage and current are combined to obtain a good image and a reduce dose, however due to the workload in a radiology service individual dose is not monitored. In order to evaluate the dose due to chest radiography in this work a plate phantom was built according to the ISO recommendations using methylmethacrylate walls and water. The phantom was used in the Imaging department of the Zacatecas General Hospital as a radiology patient asking for a chest study; using thermoluminescent dosimeters, TLD 100 the kerma at the surface entrance was determined. (Author)

Dose in conventional radiography

International Nuclear Information System (INIS)

Acuna D, E.; Padilla R, Z. P.; Escareno J, E.; Vega C, H. R.

2011-10-01

It has been pointed out that medical exposures are the most significant sources of exposure to ionizing radiation for the general population. Inside the medical exposures the most important is the X-ray use for diagnosis, which is by far the largest contribution to the average dose received by the population. From all studies performed in radiology the chest radiography is the most abundant. In an X-ray machine, voltage and current are combined to obtain a good image and a reduce dose, however due to the workload in a radiology service individual dose is not monitored. In order to evaluate the dose due to chest radiography in this work a plate phantom was built according to the ISO recommendations using methylmethacrylate walls and water. The phantom was used in the Imaging department of the Zacatecas General Hospital as a radiology patient asking for a chest study; using thermoluminescent dosimeters, TLD 100 the kerma at the surface entrance was determined. (Author)

Evaluation of the shielding of a room for radiodiagnostic; Evaluacion del blindaje de una sala para radiodiagnostico

Energy Technology Data Exchange (ETDEWEB)

Padilla R, Z. P. [Servicios de Salud de Zacatecas, Hospital de Especialidades en Salud Mental, Prolongacion 5 de mayo 1702-Sur, Parque Industrial, 98500 Calera de Victor Rosales, Zacatecas (Mexico); Acuna D, E.; Escareno J, E.; Vega C, H. R. [Universidad Autonoma de Zacatecas, Unidad Academica de Estudios Nucleares, Calle Cipres No. 10, Fracc. La Penuela, 98068 Zacatecas (Mexico)

2011-10-15

The X-ray discovery by Roentgen in 1895 and its application in diagnosis was a breakthrough in medicine. Worldwide, X-ray technique is one of the most widely used procedures in medical diagnosis. At the Mental Health Hospital of Calera Zacatecas a room has been designed as radiology room, however there is not a record of shielding characteristics. In order to determine the features of X-ray equipment that the room can host, in this work a series of calculations were carried out. Calculations were based upon the NCRP 151 recommendations and fulfilling the requirements given in the Mexican standard NOM-229-SSA1-2002. From the actual room conditions this can host a X-ray equipment without fluoroscopy, with a workload of 80 ma-min/week, with 125 k Vp as maximum operating voltage. From the actual conditions a set of recommendations, for better protection of radiation workers and public are also given. (Author)

Major, trace and rate earth elements in sediments of the Julian Adame-Alatorre dam by instrumental neutron activation analysis

International Nuclear Information System (INIS)

Mireles, F.; Pinedo, J. L.; Davila, J. I.; Oliva, J. E.; Speakman, R. J.; Glascock, M. D.

2010-10-01

The rapid industrial development in regions of Mexico during recent years has had the side effect of introducing toxic metals, fertilizers, and pesticides into the ecosystem. Sediment cores were collected from eight locations around the Julian Adame-Alatorre dam located in Municipality of Villanueva in the Zacatecas State, Mexico. The cores were analyzed for 32 major, trace, and rare earth elements (As, La, Lu, Nd, Sm, U, Yb, Ce, Co, Cr, Cs, Eu, Fe, Hf, Rb, Sb, Sc, Sr, Ta, Tb, Th, Zn, Zr, Al, Ba, Ca, Dy, K, Mn, Na, Ti, V) in order to estimate the health risk. The samples were analyzed by instrument neutron activation analysis using thermal neutron fluxes of 8 x 10 13 and 5 x 10 13 n cm -2 s -1 for short and long irradiations, respectively. The results of the contamination levels for elements such as As, Ba, Cr, Fe, Mn, Ta, V, and Zn were compared with the Mexican regulations and the guidelines of US EPA. (Author)

Evaluation of the shielding of a room for radiodiagnostic

International Nuclear Information System (INIS)

Padilla R, Z. P.; Acuna D, E.; Escareno J, E.; Vega C, H. R.

2011-10-01

The X-ray discovery by Roentgen in 1895 and its application in diagnosis was a breakthrough in medicine. Worldwide, X-ray technique is one of the most widely used procedures in medical diagnosis. At the Mental Health Hospital of Calera Zacatecas a room has been designed as radiology room, however there is not a record of shielding characteristics. In order to determine the features of X-ray equipment that the room can host, in this work a series of calculations were carried out. Calculations were based upon the NCRP 151 recommendations and fulfilling the requirements given in the Mexican standard NOM-229-SSA1-2002. From the actual room conditions this can host a X-ray equipment without fluoroscopy, with a workload of 80 ma-min/week, with 125 k Vp as maximum operating voltage. From the actual conditions a set of recommendations, for better protection of radiation workers and public are also given. (Author)

Identification of risk factors and perspectives of adolescents regarding pregnancy, sexuality and contraception

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Janette Carrillo Soto

2018-04-01

Full Text Available Aims: Describe the risk factors and perspectives of adolescents regarding pregnancy, sexuality and contraception at the Hospital General de Jerez, Zacatecas. Material and methods. Transversal, observational and descriptive study. The population consisted of 137 teenagers or young mothers with a history of pregnancy who attended a consultation in the General Hospital of Jerez and who were between 14 and 22 years old. Results. The average age of the 137 adolescents surveyed was 19.8 ± 1.9 years. 56.2% were single, 68.5% have primary and/or secondary, 75.9% of them depended economically on their father before getting pregnant and currently only 34.3% of them Conclusion. The information regarding the risks of pregnancy in adolescents presented in this document is insufficient. It is necessary to reinforce in schools, community health centers, hospitals, neighborhoods and homes, preventive education to avoid pregnancy at an early age and that this brings consequences for the adolescent mother, the child and her family.

Mental images of architectural heritage. The representations and the radical envision towards the conflicts and proposals of the historical downtown of the city of Guanajuato [Gto.], Mexico

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Edith Hernández López

2014-04-01

Full Text Available This paper searches to understand the imagery made by the inhabitants to their main conflicts and threats to built heritage, using the methodology of urban imaginaries trying to deal –with the imagination– of how the world functions and how it might work. The assumption is that perception and the proposals of these actors can shed light to the rearrangement of the Historic Center of the city and thus contribute to the conservation of the built heritage, and achieve from their imaginary ideal spaces. The Charter of Zacatecas recommends that land planning should be understood as a set of actions and integrated action programs to improve the quality of life of the population, promote orderly growth and ensure social cohesion; protect, preserve and rescue the property through public awareness and appreciation and active participation by developing surveys and identification of key individuals and opinion leaders to define policies and comprehensive strategies most convenient.

Simulation of radiation transport using MCNP for a teletherapy machine; Simulacion del transporte de radiacion usando MCNP para una maquina de teleterapia

Energy Technology Data Exchange (ETDEWEB)

Flores O, F.E.; Mireles G, F.; Davila R, J.I.; Pinedo V, J.L.; Risorios M, C.; Lopez del Rio, H. [UAZ, Unidad Academica de Estudios Nucleares, 98068 Zacatecas (Mexico)

2008-07-01

The MCNP code is used to simulate the radiation transport taking as tools the transport physics of each particle, either photon, neutron or electron, and the generation of random numbers. Developed in the Los Alamos National Laboratory, this code has been used thoroughly with great success, because the results of the simulations are broadly validated with representative experiments. In the one present work the room of radiotherapy of the Institute Zacatecano of the Tumor it is simulated, located in the city of Zacatecas where one is Theratron 780C machine manufactured by MSD Nordion, with the purpose of estimating the contribution to the dose that would be received in different points of the structure, included three directly under the source. Three results of analytical calculations for points located at different distances from the source are presented, and they are compared against those obtained by the simulation. Its are also presented results for the simulation of 10 points more distributed around the source. (Author)

Caracterizando las Necesidades de las Pymes para Implementar Mejoras de Procesos Software: Una Comparativa entre la Teoría y la Realidad

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Mirna Muñoz

2014-03-01

Full Text Available Actualmente en el ámbito del desarrollo de software a nivel mundial las pymes ocupan un considerable porcentaje del número de empresas generando el 52% del producto interno bruto de los países y alrededor del 72% de los empleados formales. Sin embargo, aun cuando es importante asegurar la calidad en sus productos, existe una carencia en la implementación de procesos o modelos formales enfocados en el desarrollo de software que las ayuden a las organizaciones a dirigir esta necesidad. Este artículo muestra una comparativa entre teoría y realidad de la caracterización de necesidades que presentan las pymes para implementar una mejora de procesos de software exitosa. En específico el estudio presentado en este artículo se centra en la Región de Zacatecas, México y los resultados obtenidos al realizar una revisión de literatura enfocada en la caracterización de pymes.

La Pediatría Colombiana (1867 – 1990

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Alberto Hernández Saenz

1991-09-01

Full Text Available

“Los libros de historia tienen un comienzo y un fin, pero no los eventos que en ellos se describen” R.G. Colllingwood (1

El 22 de septiembre de 1868, se inició en el país la Pediatría, era la época denominada segunda etapa de la Medicina Colombiana (1860-1939

Por Ley 66 de 1867, se fundó en Bogotá la Universidad de los Estados Unidos de Colombia (2. El médico y Presidente Santos Acosta en 1868, estableció en el pensum del cuarto año de la Escuela de Medicina, la cátedra de Obstetricia y Patología Especial de las mujeres y los niños. Esta materia constituyó el curso número 12 de los estudios médicos.

Fueron los primeros profesores (1868- 1881, dos destacados obstetras: José María Buendía, Libardo Rivas y el eminente fisiólogo Liborio Zerda.

El Profesor Alfonso Vargas Rubiano, estableció que el primer Profesor que aún no siendo pediatra, se dedicó exclusivamente a la docencia en nuestra especialidad (desde 1881, fué el doctor Gabriel J. Castañeda, quien con Liborio Zerda fue uno de los fundadores de la Sociedad de Medicina y Ciencias Naturales en 1873.

Al separarse las asignaturas: Obstetricia y Patología especial de las mujeres, nació la cátedra opcional de Patología e Higiene de la Infancia. El profesor Castañeda continuó al frente de la cátedra hasta 1891. En ese mismo año se fundó la Clínica Obstétrica e Infantil.

Emergió como somera figura José Ignacio Barberi, bogotano, graduado en la Universidad Nacional en 1881 3. Viajó a Inglaterra y regresó a Colombia con la firme intención de dedicar por entero sus esfuerzos al ejercicio de la Pediatría. Se constituyó así el profesor Barberi en nuestro primer especialista y desde 1891, comenzó a regentar la cátedra de Clínica Infantil, iniciándose entonces el tercer plan de estudios de Pediatría en la Facultad de Medicina.

El Profesor José Ignacio Barberi, concibió la creación de

Mujer y violencia: ¿un problema de salud comunitario?

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Alexis Culay Pérez

2000-10-01

Full Text Available Se realizó un estudio descriptivo transversal con el objetivo de conocer el comportamiento de la violencia contra la mujer en el microdistrito "Ignacio Agramonte", perteneciente al policlínico docente "Tula Aguilera" del municipio Camagüey, en el período comprendido desde el 1° de agosto de 1997 al 31 de enero de 1998. De un universo de 1088 mujeres entre 15 y 49 años se le realizó una encuesta a 310 mujeres - el tamaño de la encuesta se calculó utilizando el programa estadístico nombrado EPIDAT- resultando que 226 mujeres reportaron algún tipo de violencia para un 72,9 %. Se concluyó que la violencia psicológica fue reportada por la mitad de las mujeres, la violencia sexual por una 3ra parte y la violencia física fue la menos reportada. La violencia fue mayormente señalada por mujeres de 30-39 años con un nivel de escolaridad pre-universitario. La gran mayoría de las mujeres violentadas no solicitaron ayuda profesionalA descriptive cross-sectional study was conducted aimed at knowing the behaviour of violence against women at the "Ignacio Agramonte" microdistrict belonging to the "Tula Aguilera" Teaching Polyclinic, in the municipality of Camagüey, from August lst, 1997, to January 3lst, 1998. Of a universe of 1 088 women aged 15-49, 310 were surveyed. The size of the survey was calculated by using the EDIPAT statistical program. 226 women reported some type of violence, accounting for 72,9%. It was concluded that psychological violence was reported by half of the women, sexual violence by a third, and that physical violence was the ess reported. Violence was mostly reported by women aged 30-39 with a preuniversitary educational level. Most of the battered women did not ask for professional help

La transformación del ecosistema mediático español: el caso de eldiario.es / The transformation of the Spanish media ecosystem: the case of eldiario.es

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José Luis González Esteban

2014-12-01

Full Text Available El ecosistema mediático español se está transformando a ritmo vertiginoso, de manera similar a la política nacional y con muchas claves coincidentes como la participación ciudadana. Tras unos años de experimentación en torno a contenidos, organización y sobre todo modelos de negocio de los nuevos medios, en España se están consolidando proyectos de sumo interés. Uno de ellos es eldiario.es, medio nativo digital encabezado por el periodista Ignacio Escolar que se ha colocado entre los medios más influyentes del país, entre los más visitados en Internet, y ello gracias a un periodismo de calidad especializado en contenidos de política nacional, aderezados con un toque social. En el presente artículo se analiza la evolución de los medios nativos digitales en España durante el último lustro, poniendo el foco en el caso aludido por la originalidad de su modelo de negocio y por el impacto de sus contenidos de actualidad política. Abstract The Spanish media ecosystem is becoming a crazy pace, similar to the national policy and with many matching keys as citizen participation. After years of experimentation around content, organization, and especially business models of new media in Spain are consolidating projects of great interest. One is eldiario.es, digital native environment led by journalist Ignacio Escolar has been placed among the most influential media in the country, among the most visited on the Internet, thanks to quality journalism specializing in content of national policy seasoned with a social twist. In this paper the evolution of digital natives in Spain media is analyzed during the last five years, putting the focus on the case mentioned by the originality of its business model and the impact of current affairs content.

Censura y prensa periódica a finales del siglo XVIII: El caso del Semanario erudito (1787-1791

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Sutherland, Madeline

2013-12-01

Full Text Available How did censorship operate in Spain in the last decades of the eighteenth century? This article considers one periodical—the Semanario Erudito—as a case study. Extant correspondence between the editor (Antonio Valladares de Sotomayor, the Consejo de Castilla, and the censors (primarily Ignacio López de Ayala and Santos Díez González allow us to view the censorship process and the attitudes of the participants in the process. After introducing Valladares and reviewing the laws that regulated the printing of periodicals, we examine requests for printing licenses made by the editor and the justifications of the censors and the Consejo for their decisions. While the censors and the Consejo sought to maintain ideological and legal control over what was published, the correspondence shows that they were also interested in making important, useful documents available to the reading public and in insuring that what was printed was correct and accurate.¿Cómo operaba la censura periodística en España en las últimas décadas del siglo XVIII? Este trabajo considera el caso de un periódico en particular, el Semanario Erudito. La correspondencia existente entre el editor (Antonio Valladares de Sotomayor, el Consejo de Castilla, y los censores (principalmente Ignacio López de Ayala y Santos Díez González nos permite ver el proceso censorio y las actitudes de los participantes en el proceso. Tras describir las actividades editoras de Valladares y repasar las leyes que regulaban la imprenta de periódicos, se examinan las peticiones del editor y las justificaciones de los censores y el Consejo con respecto a sus decisiones. La correspondencia nos permite concluir que mientras los censores y el Consejo se interesaban en ejercer un control ideológico y jurídico sobre lo que se publicaba, les importaba también hacer posible la publicación de documentos importantes o útiles y asegurar la calidad de ellos haciendo correcciones y exigiendo precisi

Therapeutic plasma exchange in patients with pauciimmune vasculitis: Hospital Universitario San Ignacio experience; Bogotá, Colombia

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Juan P. Córdoba

2014-05-01

Full Text Available Introduction: The vasculitis ANCAS positive, are a group of diseases with different clinical manifestations. Therapeutic plasma exchange has become an excellent tool for the treatment of these patients in specific conditions. Objective: Describe the demographic and clinical characteristics of patients and the final outcomes in patients with positive ANCAS vasculitis that required therapeutic plasma exchange (TPE. Materials and methods: All patients under 18 years old with positive ANCAS vascultiis that required TPE where included during the period of May 2010 and December 2013. Results: 13 patients where treated, with a total of 73 TPE sessions. The average age was 52,3 years (Range 17 to 70. The principal diagnosis for interventions was rapidly progressive glomerulonephritis (RPGN plus alveolar hemorrhage (63%. The average number of sessions per patient was 5,6 (range 1 a 10 with an average of plasma volume exchange per session of 1,26 (range 0.72 a 1,56. Of the 13 patients, 11 (84,6% required renal replacement therapy (RRT during hospitalization. At discharge, 36.3% recover the renal function, 27% continue on RRT and 36,3% died. There was at least one complication in 6,8% of all sessions. Conclusions: TPE is an excellent tool to treat patients with positive ANCAS vasculitis that present with RPGN, high levels of serum creatinine or dialysis need, or alveolar hemorrhage. This is a safe procedure with comparable results according to International literature.Key words: Apheresis, plasmapheresis, therapeutic plasma exchange, vasculitis, ANCA.

Commensality identity, a challenge for public health policies. The case of culinary exchanges: from mulli to wedding roasts in the Great Chichimeca La comensalidad identitaria un reto para las políticas públicas de salud. El caso del mulli al asado de boda en la Gran Chichimeca

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Maricruz Romero Ugalde

2013-09-01

Full Text Available The "Great Chichimeca" is considered as a region of constant cultural exchanges between sedentary and nomadic groups. It is located in San Juan del Río, México, southwest of the United States. In this research the relationship between the meals that were used in com­memorative rituals and traditional festivities associated with life cycles in populations in the area comprised between Querétaro and Zacatecas are shown. The objective is to demonstrate the possibility of accounting for certain cultural exchanges in the region based on food and specific forms of preparation, identifying transformations and continuities that promote iden­tity regarding ritual commensality. Some of the questions guiding this research are: Is it pos­sible to identify certain constants in the use of corn and chili? How did culinary changes occur from the introduction of turkey to the introduction of pork? Why are there certain dishes with names that have a direct reference to indigenous cultures? In which way is commensality related to international policies such as the right to food or the recognition of certain cuisines as part of cultural heritage of humanity?La Gran Chichimeca se concibe como una zona de intercambio cultural constante entre grupos sedentarios y nómadas que se ubica de San Juan del Río al suroeste de Estados Unidos. En el presente trabajo se muestran relaciones entre algunas poblaciones de los actuales estados de Querétaro a Zacatecas a partir de las comidas empleadas en los rituales conmemorativos del ciclo vital y festivo para demostrar cómo a través de los alimentos y sus formas de preparación es posible dar cuenta de los intercambios culturales en la zona, ubicando las transformacio­nes y continuidades que promueven factores identitarios a partir de la comensalidad ritual. Algunas de las preguntas que guían la exposición son: ¿Es posible identificar continuidades en el uso del maíz y el chile? ¿Cómo se modifica la incorporaci

Los grandes hacendados de Zacatecas: permanencia y evolución de un modelo aristocrático

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Frédérique Langue

2005-02-01

Full Text Available Las vías de la historia resultan a veces impredecibles, o más bien las que llevan a la interpretación de la misma, o incluso a su reconstitución a posteriori. La América hispánica, por las implicaciones que conlleva tradicionalmente su ubicación dentro de estrategias políticas y culturales abiertas, es un ejemplo privilegiado de lo anteriormente señalado. La independencia de las jóvenes naciones hispanoamericanas dio paso de esta manera a la denunciación del carácter "feudal" de las estructur...

Los grandes hacendados de Zacatecas: permanencia y evolución de un modelo aristocrático

OpenAIRE

Langue, Frédérique

2005-01-01

Las vías de la historia resultan a veces impredecibles, o más bien las que llevan a la interpretación de la misma, o incluso a su reconstitución a posteriori. La América hispánica, por las implicaciones que conlleva tradicionalmente su ubicación dentro de estrategias políticas y culturales abiertas, es un ejemplo privilegiado de lo anteriormente señalado. La independencia de las jóvenes naciones hispanoamericanas dio paso de esta manera a la denunciación del carácter "feudal" de las estructur...

Black holes go supersonic

Energy Technology Data Exchange (ETDEWEB)

Leonhardt, Ulf [School of Physics and Astronomy, University of St. Andrews (United Kingdom)

2001-02-01

In modern physics, the unification of gravity and quantum mechanics remains a mystery. Gravity rules the macroscopic world of planets, stars and galaxies, while quantum mechanics governs the micro-cosmos of atoms, light quanta and elementary particles. However, cosmologists believe that these two disparate worlds may meet at the edges of black holes. Now Luis Garay, James Anglin, Ignacio Cirac and Peter Zoller at the University of Innsbruck in Austria have proposed a realistic way to make an artificial 'sonic' black hole in a tabletop experiment (L J Garay et al. 2000 Phys. Rev. Lett. 85 4643). In the February issue of Physics World, Ulf Leonhardt of the School of Physics and Astronomy, University of St. Andrews, UK, explains how the simulated black holes work. (U.K.)

Realities given in Colombia: an urgent call to the psychology of liberation

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Daniela Barrera Machado

2017-06-01

Full Text Available The socio-political crisis that Colombia has been going through for decades has made psychology an enormous task, namely: to think about the role it plays in the midst of these realities given in the country and in the contribution it has made and could make for its transformation. Starting from the proposals of Ignacio Martín-Baró and Edgar Barrero Cuellar, this article tries to reflect on the psychology that Colombia needs, a psychology of the liberation that makes a decided commitment by a critical perspective and emancipating; Which implies transcending its authoritarian epistemology, constructing theory from and for the people and deploying a transformative praxis that takes on three important tasks: to recover the historical memory, to deideologize the common sense and to promote the popular virtues.

COMPOSITION OF THE JOINT ADVISORY APPEALS BOARD - 2003 Exercise

CERN Multimedia

2003-01-01

Appointed by the Director-GeneralAppointed by the Staff Association MembersChristian Fabjan/EPIrene Seis/IT 1st deputies Lars Leistam/ESTJean-Claude Carlier/TIS 2nd deputies Luc Durieu/ABMorna Robillard/HR Dr Fabjan and Mrs Seis have drawn up the following list of staff members from among whom the Chairperson of the Board may be chosen when required : Appointed by the Director-GeneralAppointed by the Staff AssociationPhilippe Charpentier/EPCorrado Pettenati/ETT Christophe Delamare/EST Ignacio Reguero/IT Eugenia Hatziangeli/AB Alasdair smith/EP Tadeusz Kurtyka/EST Pierre Strubin/AT Mats Møller/AS Elena Wildner/AT Mediators [see Administrative Circular N° 6 (Rev. 1) entitled "Review procedure"] will also be selected from this list of ten staff members. Human Resources DivisionTel. 74128

COMPOSITION OF THE JOINT ADVISORY APPEALS BOARD - 2002 Exercise

CERN Multimedia

Human Resources Division

2002-01-01

Apointed by the Director-General Appointed by the Staff Association Members Christian Fabjan/EP Irene Seis/IT 1st deputies Sue Foffano/AS Jean-Claude Carlier/TIS 2nd deputies Luc Durieu/PS Morna Robillard/HR Dr Fabjan and Mrs Seis have drawn up the following list of staff members from among whom the Chairman of the Board may be chosen when required: Apointed by the Director-General Appointed by the Staff Association Christophe Delamare/eEST Mats Moller/AS Cristina Lara/SPL Corrado Pettenati/ETT Eugenia Hatziangeli/SL Ignacio Reguero/IT Lars Leistam/EST Alasdair smith/EP Guy Maurin/EP Pierre Strubin/LHC Mediators [see Administrative Circular N° 6 (Rev. 1) entitled 'Review procedure'] will also be selected from this list of ten staff members. Human Resources Division Tel. 74128

REPROBATION AND LACK OF INTEREST IN MECHATRONICS ENGINEERING STUDENTS

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César Humberto Guzmán Valdivia

2013-07-01

Full Text Available Engineering education in mechatronics is an attractive field of research because it is a new multidisciplinary career. However, a potential problem is the reprobation rate. In the period from January to April 2012 at the Universidad Politécnica de Zacatecas a 53% regular students of a total of 197 were registered. To find the causes of this problem, a survey was conducted to determine the causes of reprobation, lack of motivation and interest to a population of 96 students, of which 40 were the first training cycle, 32 the second and 24 the third. The surveys yielded three main results. The first indicates that the lack of interest is proportional to the time spent in college. The second shows that the reprobation rate is linked to the laziness and the excess of courses. And the last shows a lack of motivation and low expectations of student due to the monotony of the theoretical courses. In conclusion, more research is needed to have a motivated student in an engineering career in mechatronics.

Analysis of the sediments of the Julian Adame Alatorre dam by the INAA; Analisis de sedimentos de la presa Julian Adame Alatorre por la tecnica de AANI

Energy Technology Data Exchange (ETDEWEB)

Oliva, J.E.; Lugo, J.F.; Mireles, F.; Quirino, L.L.; Davila, J.I.; Pinedo, J.L.; Rios, C. [UAZ, Cipres 10, Fracc. La Penuela, 98068 Zacatecas (Mexico); Miller, W.H. [Nuclear Science and Engineering Institute, E2433 Engineering Building East, University of Missouri-Columbia, MO 65211 (United States)]. e-mail: jeolivag@yahoo.com.mx

2003-07-01

Its were taken eight samples of sediment of the Julian Adame Alatorre dam located in the Villanueva municipality, in the State of Zacatecas, Mexico; with the end of determining the presence of elements of anthropogenic origin, as well as the concentration of the same ones. It was used the Instrumental neutron activation analysis (AANI) with a flow of thermal neutrons of 8 x 10{sup 13} and 5 x 10{sup 13} n cm{sup -2} s{sup -1}. With the purpose of determining the concentration of these elements at level of traces; finding presence of 32 elements among which its were find elements in greater concentrations and others at level of traces. Of these 32 elements, five of anthropogenic origin were identified which its were: Cr, Co, Zn, As and Mn; but that whose concentration is very low, in comparison with the one reported in other places of the world. In this work there are presented the obtained results of the elementary analysis of this samples. (Author)

[Trend analysis of acquired syphilis in Mexico from 2003 to 2013].

Science.gov (United States)

Herrera-Ortiz, Antonia; Uribe-Salas, Felipe J; Olamendi-Portugal, Ma Leonidez; García-Cisneros, Santa; Conde-Glez, Carlos Jesús; Sánchez-Alemán, Miguel A

2015-01-01

To identify the population group in which syphilis increase was concentrated. The information was collected from the Mexico health statistical yearbooks. The information disaggregated by sex, age group and state during the period 2003 to 2013 was used to form different databases. Linear regression analysis with confidence interval at 95% was used to evaluate changes over time in different population groups. An increase of 0.67 cases per 100,000 population (95%CI 0.30-1.04) in men was detected from 2010. The increase was concentrated in each group of 20-24 and 25-44. The highest incidence of acquired syphilis was reported in the last two years: 2012 and 2013. The last year reported a 1.85 times higher incidence than reported in 2003. Aguascalientes, Distrito Federal, Durango, Mexico, Oaxaca, Puebla, Quintana Roo, Yucatan and Zacatecas reported that syphilis increased during the study period. Acquired syphilis may be reemerging in our country among young men; this increase is not uniform across the country, it is necessary to focus intervention measures for this sexually transmitted infection.

Major, trace and rate earth elements in sediments of the Julian Adame-Alatorre dam by instrumental neutron activation analysis

Energy Technology Data Exchange (ETDEWEB)

Mireles, F.; Pinedo, J. L.; Davila, J. I.; Oliva, J. E. [Universidad Autonoma de Zacatecas, Calle Cipres No. 10, Fracc. La Penuela, 98068 Zacatecas (Mexico); Speakman, R. J. [Museum Conservation Institute, Smithsonian Institution, Suitland, MD 20746 (United States); Glascock, M. D., E-mail: fmireles@uaz.edu.m [Research Reactor Center, University of Missouri, Columbia, MO 65211 (United States)

2010-10-15

The rapid industrial development in regions of Mexico during recent years has had the side effect of introducing toxic metals, fertilizers, and pesticides into the ecosystem. Sediment cores were collected from eight locations around the Julian Adame-Alatorre dam located in Municipality of Villanueva in the Zacatecas State, Mexico. The cores were analyzed for 32 major, trace, and rare earth elements (As, La, Lu, Nd, Sm, U, Yb, Ce, Co, Cr, Cs, Eu, Fe, Hf, Rb, Sb, Sc, Sr, Ta, Tb, Th, Zn, Zr, Al, Ba, Ca, Dy, K, Mn, Na, Ti, V) in order to estimate the health risk. The samples were analyzed by instrument neutron activation analysis using thermal neutron fluxes of 8 x 10{sup 13} and 5 x 10{sup 13} n cm{sup -2} s{sup -1} for short and long irradiations, respectively. The results of the contamination levels for elements such as As, Ba, Cr, Fe, Mn, Ta, V, and Zn were compared with the Mexican regulations and the guidelines of US EPA. (Author)

PROJECTION OF UNEMPLOYMENT IN SMES THE FEDERAL REPUBLIC OF MEXICO FOR 2012

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Saúl Robles-Soto

2016-01-01

Full Text Available In the mexican economic system the denominated Mypymes conform the microempresas, small companies and medium companies, the small and medium generate 30 % of the total employment, while the microempresas 46 %. This study is made a recount of the Mypymes in Mexico, with emphasis in the year 2010, where were a significant quantity of companies closed its activities, standing out the insecurity /1/, crisis and decrease of the internal market. The study is been of a permanent work with data of the INEGI /2/ for the Applied Economy Laboratory (LAE in the Academic Unit of Economy of the Autonomous University of Zacatecas Mexico, and the Center of Studies of Applied Investigations to the Production and the Services of the Economic and Managerial Sciences Faculty of the Universidad de Oriente in Santiago de Cuba. Also by the classic analysis of regression is projected the possible unemployment the year 2012, based on the prognosis of Mypymes for this stage, which was in an increment in the number of unemployment of 2,54 %. 

The integration of the contents of the subject Physics-Chemistry (I in Biology-Chemistry specialty

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M. Sc. Luis AZCUY LORENZ

2017-12-01

Full Text Available This work is the result of a research task developed in the Natural Sciences Education Department during 2013-2014 academic year, and it emerged from the necessity of solving some insufficiencies in the use of the real potentialities offered by the content of the subject Physics-Chemistry (I, that is part of the curriculum of the Biology-Chemistry career. Its main objective is to offer a set of exercises to contribute to achieve the integration of contents from the subject Physics-chemistry (I in the mentioned career at «Ignacio Agramonte Loynaz» University of Camaguey. The exercises proposed are characterized for being related to the real practice and to other subjects of the career. Their implementation through review lessons, partial tests and final evaluations during the formative experiment made possible a better academic result in the learners overall performance.

El vértigo de lo lento de Mónica Millán: presentar mundos

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Georgina Gluzman

2012-07-01

Full Text Available La obra de Mónica Millán (San Ignacio, 1960 El vértigo de lo lento se sitúa en el cruce entre el arte y la antropología. Frente a las lecturas que esta propuesta ha suscitado, nuestro texto busca poner de relieve las tensiones y relaciones existentes entre el trabajo de la artista y la disciplina antropológica, que constituyen una rica y densa trama. El vértigo de lo lento, al abordar la dicotomía arte/artesanía, basándose en un proceso de apropiación de una realidad cultural ajena a la autora, resulta una obra compleja, cuyo análisis puede contribuir a desnaturalizar ideas arraigadas en torno a la creación artística y a las jerarquías entre técnicas.

Theoretical perspectives for the Environmental Education in high school. Theory and practice

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Liliana Haydé Gutiérrez Sabogal

2017-03-01

Full Text Available This article exposes the background and conclusions of an Environmental Education purpose —EE— supported by theoretical models able to frame processes of teaching and learning applied to EE in the high school. All of this come from strict revision and analysis of complemented educational didactics, through the professional teaching experience. To reveal this conceptual framework, the activities are posed and developed within the Environmental School Project —ESP— of the District Education Institute —DEI— Ignacio Pescador as a mode to put into practice the analyzed theory. Thus, the results obtained validate the referential framework proposed to produce knowledge about the instructive theory — which is aimed to professional teachers who will be added to the teaching process of EE into the high school institutes— and the process of knowledge creation in the student body.

Cantor, God, and Inconsistent Multiplicities*

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Thomas-Bolduc Aaron R.

2016-03-01

Full Text Available The importance of Georg Cantor’s religious convictions is often neglected in discussions of his mathematics and metaphysics. Herein I argue, pace Jané (1995, that due to the importance of Christianity to Cantor, he would have never thought of absolutely infinite collections/inconsistent multiplicities, as being merely potential, or as being purely mathematical entities. I begin by considering and rejecting two arguments due to Ignacio Jané based on letters to Hilbert and the generating principles for ordinals, respectively, showing that my reading of Cantor is consistent with that evidence. I then argue that evidence from Cantor’s later writings shows that he was still very religious later in his career, and thus would not have given up on the reality of the absolute, as that would imply an imperfection on the part of God.

A randomized, double-masked study to evaluate the effect of omega-3 fatty acids supplementation in meibomian gland dysfunction

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Oleñik A

2013-08-01

Full Text Available Andrea Oleñik,1 Ignacio Jiménez-Alfaro,1 Nicolás Alejandre-Alba,1 Ignacio Mahillo-Fernández2 1Department of Ophthalmology, Jiménez Díaz Foundation, Madrid, Spain; 2Department of Statistics, Jiménez Díaz Foundation, Madrid, Spain Background: Dysfunction of the meibomian gland (MG is among the most frequent causes of ophthalmological symptoms. The inflammation seen in meibomian gland dysfunction (MGD is part of its pathogenesis, and evidence of the antioxidant-inflammatory properties of omega-3 fatty acids suggests this to be an appropriate treatment for MGD. Objective: We aimed to assess the effectiveness of omega-3 fatty acids versus placebo, in improving the symptoms and signs of MGD. Methods: We conducted a randomized and double-mask trial of 3 months duration. We enrolled 61 patients who presented with symptomatic MGD and no tear instability (defined as tear breakup time [TBUT] <10 seconds. Participants were randomly assigned to two homogeneous subgroups. For patients in group A, the study treatment included cleaning the lid margins with neutral baby shampoo and use of artificial tears without preservatives, plus a placebo oral agent. For patients in group B, the study treatment included cleaning the lid margins with neutral baby shampoo and use of artificial tears without preservatives, plus oral supplementation with omega-3 fatty acids. We performed the following tests: (1 TBUT; (2 Schirmer I test; (3 Ocular Surface Disease Index© (OSDI©; Allergan, Inc., Irvine, CA, USA; (4 MG expression; (5 evaluation of lid margin inflammation; and (6 interpalpebral and corneal dye staining. Results: After 3 months of evaluation, the mean OSDI, TBUT, lid margin inflammation, and MG expression presented improvement from the baseline values, in group B (P < 0.01, P < 0.001, P < 0.0001, P < 0.0001, respectively. The Schirmer test results were also improved and statistically significant (P < 0.01. Conclusion: Oral omega-3 fatty acids, 1.5 grams per

Hipertensión arterial: comportamiento de su prevalencia y de algunos factores de riesgo

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Freddie Hernández Cisneros

1996-04-01

Full Text Available Se realizó un estudio de casos y controles con el objetivo de conocer el comportamiento de la prevalencia y de algunos factores de riesgo de la hipertensión arterial en un consultorio del médico de la familia perteneciente al Policlínico Comunitario Docente "Ignacio Agramonte" del municipio Camagüey. El grupo de casos estuvo constituido por los 150 pacientes dispensariza dos con el diagnóstico de hipertensión arterial y el grupo control por igual número de sujetos que no padecían de esta entidad y pertenecientes al mismo consultorio; se les aplicó a todos un modelo de encuesta donde se recogieron una serie de variables seleccionadas, para el posterior procesamiento de los datos de una forma computadorizada. Los resultados más importantes que se obtuvieron fueron: una prevalencia muy por encima de otros estudios realizados en el país, con mayor frecuencia en el sexo masculino, mayores de 35 años de edad y color de la piel mestiza y negra. Los 3 factores de riesgo que mostraron mayor grado de asociación fueron: los antecedentes patológicos familiares de hipertensión arterial, la obesidad y el abuso en la ingestión de salA case-control study was carried out with the aim of knowing the behaviour of prevalence and of some risk factors of arterial hypertension at a consultation of the family physician, belonging to the "Ignacio Agramonte" Community Teaching Polyclinic. The case group was composed of 150 patients dispensarized with the diagnosis of arterial hypertension, and the control group had the same number of subjects, who did not suffer from this disease and received medical attention at the same consultation. All of them took part in a survey where a series of selected variables were collected for the computerized processing of data. The most important results attained were as follows: a prevalence highly over other studies carried out in the country, with a greater frequency in men over 35 years old, and with brown and black

Kevadelaul : [luuletused] / Federico Garcia Lorca ; tlk. Ain Kaalep

Index Scriptorium Estoniae

García Lorca, Federico, 1898-1936

2006-01-01

Sisu: Kevadelaul ; Uued laulud ; Unenägu ; Uus süda ; Rõske siseõu ; Risttee : "Oh valu: mu värsid võtnud..." ; Ballaad mereveest ; Huile ; Vaikus ; Risttee : "Tuul puhub läänest..." ; Sevilla ; Kuus keelt ; Memento ; Kolm linna : Malaguena ; Cordoba agul ; Tants ; Kitarrimõistatus ; Poolkuu ; Neli kollast ballaadi ; Aadam ; Tasakaal ; Friis ; Maha raiuti kolm puud ; Teokarp ; Rumal laul ; Õhtu ; Ratsaniku laul ; Debussy ; Kuu tõuseb ; Kaks õhtust kuud ; Serenaad ; Laul lahkuvast päevast ; Kuuba neegrilaul ; Itk Ignacio Sanchez Mejiase surma puhul ; Madrigal Santiago linnale ; Hällilaul surnud Rosalia Castrole ; Kuu tants Santiagos ; Gaseel kohutavast lähedusest ; Gaseel tumedast surmast ; Gaseel põgenemisest ; Gaseel saja-aastasest armastusest ; Kassiida okstest ; Kassiida selili lebavast naisest ; Kassiida unenäost vabas õhus ; Kassiida tumedaist tuvidest ; Vee süit ; Herbaariumid ; Omega ; Ood Salvador Dalile ; "Ma kardan, kas su imet ma ei kaota..." . Eluloolisi andmeid autori kohta lk. 879

Alternancia política y nueva gestión pública: un análisis comparativo, 1998-2008

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Carlos López Portillo Tostado

2013-01-01

Full Text Available Ante un vacío en el tema, aquí se analiza el impacto de la alternancia política en la modernización administrativa municipal, a partir de las propuestas de la nueva gestión pública, de las que se tomaron tres variables representativas: estructura organizacional, mejora regulatoria y gobierno electrónico, además de la participación ciudadana(ciudadano como cliente y cogestión, que representan la gobernabilidad democrática, y se aplicaron en tres casos: Hermosillo, gobernado por el Partido Acción Nacional; Zacatecas por el Partido de la Revolución Democrática y Culiacán, por el Partido Revolucionario Institucional, durante tres periodos consecutivos. Se utilizaron ponderaciones y coeficientes de correlación, y la conclusión es que los gobiernos panistas tienden a ajustar más su estructura organizacional y marco regulatorio que los otros dos partidos, aunque todos los municipios han incorporado el gobierno electrónico y mecanismos de participación ciudadana institucionalizada. Ninguno ha adoptado las propuestas de reducir el tamaño del gobierno e implementar un servicio profesional de carrera.

Desarrollo convergente municipal entre estados contiguos a Nayarit y Sinaloa

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Eduardo Meza-Ramos

2010-01-01

Full Text Available El análisis del crecimiento económico registra disparidades sectoriales que se manifiestan en el interior de los países, entre las áreas urbanas y las rurales; entre las regiones prósperas y las rezagadas. En México la política de liberalización comercial no se ha visto reflejada de manera generalizada en la riqueza de la población. Se evaluó la hipótesis de convergencia en el ámbito municipal de los estados de Chihuahua, Durango, Jalisco, Nayarit, Sinaloa, Sonora y Zacatecas; por los datos considerados en el estudio se puede argumentar la existencia de convergencia ¿ y ¿, pues en promedio, la desviación estándar en el año 1989 fue de 1.73 y disminuyó a 1.31 en 2006. La convergencia ¿ describe una relación negativa con un valor absoluto de su estadístico mayor a 2; con 95% de confianza. Cabe señalar que se cuenta con políticas sociales y sectoriales pero se carece de políticas públicas que promuevan el desarrollo regional.

A ambos lados del Atlántico con García Márquez

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Conrado Zuluaga

2014-03-01

Full Text Available El español, lengua materna de unos quinientos millones de personas en veintiún países, es uno de los idiomas más hablados en el mundo y, aunque conserva una considerable homogeneidad, presenta una gran variedad de acentos y vocablos. Si bien los hispanohablantes de ambos lados del Atlántico comparten cerca del noventa por ciento del vocabulario, los regionalismos, modismos o coloquialismos locales prestan a confusión, y es posible que una misma palabra tenga numerosos y diferentes significados, según el país o la región en donde se emplean. En su discurso inaugural del Primer Congreso Internacional de la Lengua Española, en Zacatecas (1997, titulado Botella al mar para el dios de las palabras, García Márquez afirma que “el español tiene un ámbito propio de 19 millones de kilómetros cuadrados [...] Con razón un maestro de letras hispánicas en Estados Unidos ha dicho que sus horas de clase se le van en servir de intérprete entre latinoamericanos de distintos países”.

A neutron spectrum unfolding code based on iterative procedures

International Nuclear Information System (INIS)

Ortiz R, J. M.; Vega C, H. R.

2012-10-01

In this work, the version 3.0 of the neutron spectrum unfolding code called Neutron Spectrometry and Dosimetry from Universidad Autonoma de Zacatecas (NSDUAZ), is presented. This code was designed in a graphical interface under the LabVIEW programming environment and it is based on the iterative SPUNIT iterative algorithm, using as entrance data, only the rate counts obtained with 7 Bonner spheres based on a 6 Lil(Eu) neutron detector. The main features of the code are: it is intuitive and friendly to the user; it has a programming routine which automatically selects the initial guess spectrum by using a set of neutron spectra compiled by the International Atomic Energy Agency. Besides the neutron spectrum, this code calculates the total flux, the mean energy, H(10), h(10), 15 dosimetric quantities for radiation protection porpoises and 7 survey meter responses, in four energy grids, based on the International Atomic Energy Agency compilation. This code generates a full report in html format with all relevant information. In this work, the neutron spectrum of a 241 AmBe neutron source on air, located at 150 cm from detector, is unfolded. (Author)

Escrituras subversivas: pensamiento crítico desde Centroamérica

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Juan Pablo Gómez

2014-02-01

Full Text Available ¿Qué significa escribir durante la guerra? ¿Qué posicionalidades y sensibilidades se producen a partir de estas experiencias límites y de qué forma nos pueden ayudar a comprender el pasado y el presente? Para responder estas preguntas analizamos la política de escritura de tres pensadores centroamericanos: Ignacio Martín-Baró, Ricardo Falla e Ileana Rodríguez. A través del método etnográfico de la historia propuesto por Cristina Rivera Garza, postulamos que estos intelectuales nos permiten establecer un puente para presenciar el pasado. Cada uno de ellos nos ofrece una imagen del pasado reciente de tres países de la región. El pensamiento producido desde Centroamérica durante los contextos revolucionarios y de guerra nos permite dialogar críticamente con el pasado, a la vez que nos da luces para pensar los cambios que continúan pendientes hoy.

El nazismo a la luz de las novelas hispanoamericanas actuales

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Nina Pluta

2013-01-01

Full Text Available The exchange of ideas and cultural influences between postcolonial countries of both Americas and the mother countries, has never been limited to one-sided imitation of European patterns. Since the 21th century or even since the colonial period, European theories rooted locally giving original fruits (i.e. magical realism, the Latin American version of world’s primitivisme from the first half of the 20th century. Within the broadly defined transatlantic studies, the particular aim of this paper is to explore motives related to fascism and nazism present in the modern Spanish American prose (Roberto Bolaño, Ignacio Padilla, Jorge Volpi. Firstly, I draw the cultural context in which racist and esoteric ideas of renewing the world infiltrated to Latin America. In the second part I analyse ways to adapt fascist plots in modern novels. Among them the predominating tendencies are to parody the totalitarian ideas or to see them as an incarnation of the intangible evil.

[Peculiarities of the transesophageal echocardiography in octogenarian patients].

Science.gov (United States)

Canale, Jesús M; Cardoza-Encinas, Rubén; Canale-Segovia, Andrés

The growing trend in the absolute and relative number of elderly in the population scheme, the increasing prevalence of heart disease as people get older and the impressive technological development of ultrasound devices have all together recently contributed to promote an increasing number of transesophageal echocardiograms in older patients, however, the already published information about the distinguishing features of this diagnostic methodology in elderly patients is still scarce and seems to be insufficient. This review focuses on the already published methodological and diagnostic features related to the transesophageal echocardiography in the octogenarian -or even older patient- in order to show them in an orderly and systematic manner to provide elements that induce useful clinical criteria for the physician who attends patients in this age group in whom this diagnostic modality is now increasingly requested. Copyright © 2016 Instituto Nacional de Cardiología Ignacio Chávez. Publicado por Masson Doyma México S.A. All rights reserved.

Mexican and Cuban Composers in New York City circa 1880-1920

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John Koegel

2006-10-01

Full Text Available Cuban musicians active in New  York in the 1860s through the 1890s such as Ignacio Cervantes, Emilio Agramonte, and Rosalia Chalia assisted in the struggle for Cuban independence from Spain from the vantage point of New York's Cuban émigré community, and they also established  a strong  presence in the city's musical life.  Important Mexican musicians such as Miguel Lerdo  de Tejada and Carlos Curti intermittently visited New York or were long-term residents there. This was especially true during the late- nineteenth century, when the forced political stability during the Porfiriato made possible the extended visits of Mexican musicians and ensembles to North American cities such as New York. The Mexican Revolution also sent Mexican musicians to the United States in search of political freedom as well as economic and artistic opportunities that were temporarily closed to them in Mexico.

Evolution of Northeastern Mexico during the early Mesozoic: potential areas for research and exploration José Rafael Barboza-Gudiño

Science.gov (United States)

Barboza-Gudiño, R.

2013-05-01

The lower Mesozoic succession of central and northeastern Mexico was deposited in a late Paleozoic-early Mesozoic remnant basin, formed at the westernmost culmination of the Ouachita-Marathon geosuture, after closure of the Rheic Ocean. Triassic fluvial deposits of El Alamar Formation (El Alamar River) are distributed in Tamaulipas and Nuevo Leon as remnants of a continental succession deposited close to the western margin of equatorial Pangea, such fluvial systems flowed to the ocean, located to the west and contributed to construction of the so-called Potosí submarine fan (Zacatecas Formation). Petrographic, geochemical, and detrital zircon geochronology studies indicate that both, marine and continental Triassic successions, come from a continental block and partially from a recycled orogen, showing grenvillian (900-1300 Ma) and Pan-African (500-700 Ma) zircon age populations, typical for peri-gondwanan blocks, in addition to zircons from the Permo-Triassic East Mexico arc (240-280 Ma). The absence of detrital zircons from the southwestern North American craton, represent a strong argument against left lateral displacement of Mexico to the southwest during the Jurassic up to their actual position, as proposed by the Mojave-Sonora megashear hypothesis. Towards the end of the Triassic or in earliest Jurassic time, began the subduction along the western margin of Pangea, which causes deformation of the Late Triassic Zacatecas Formation and subsequent magmatism in the continental Jurassic arc known as "Nazas Arc ", whose remnants are now exposed in central- to northeastern Mexico. Wide distributed in northern Mexico occurred also deposition of a red bed succession, overlying or partially interstratified with the Early to Middle Jurassic volcanic rocks of the Nazas Formation. To the west and southwest, such redbeds change transitionally to marine and marginal sedimentary facies which record sedimentation at the ancient paleo-pacific margin of Mexico (La Boca and

Variabilidad anatómica de los sistemas de conducción y estomático de genotipos de Prunus spp. de diferentes orígenes Anatomical variability of water conduction and stomatal systems in genotypes of Prunus spp. of different origins

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Carlos Alberto Núñez-Colín

2006-02-01

Full Text Available El propósito de esta investigación fue estudiar las relaciones ambientales de disponibilidad de humedad, con las características anatómicas del sistema de conducción de agua y estomático, en cinco genotipos de duraznos mexicanos con diferentes orígenes (Jalatzingo y Misantla, Veracruz; Temascaltepec, México; Tulancingo, Oaxaca; Sombrerete, Zacatecas, un almendro y el portainjerto Nemaguard. Fueron caracterizados anatómicamente brotes, hojas y estomas de plántulas de seis meses de edad, mediante 25 caracteres. El almendro y el portainjerto Nemaguard presentaron diferencias con respecto a los duraznos, los cuales tuvieron mayor similitud, aunque mantuvieron una separación acorde con su origen. Los caracteres que diferenciaron los grupos fueron: densidad estomática, grosor de la epidermis superior, número, frecuencia y perímetro de vasos, el índice de vulnerabilidad de la nervadura central, y el porcentaje de médula, xilema y floema del brote. Las condiciones de disponibilidad de humedad del origen presentaron fuerte asociación con las características anatómicas estudiadas, debido a que los ambientes con mayor déficit de humedad (Tulancingo y Sombrerete presentaron mayor tamaño y menor frecuencia de vasos de xilema, así como bajo porcentaje de xilema y floema en brote, lo que puede interpretarse como adaptaciones de resistencia a sequía. La zona donde es rara la ocurrencia de sequía (Jalatzingo presentó características opuestas.The aim of this research was to study the relationships between environmental humidity availability and the anatomical characteristics of water conduction and stomatal systems, in five Mexican peach genotypes with different origins (Jalatzingo and Misantla, Veracruz; Temascaltepec, México; Tulancingo, Oaxaca; Sombrerete, Zacatecas, one almond and Nemaguard rootstock. Shoots, leaves and stomata of six months old plants were anatomically characterized by means of 25 characters. The almond tree and

Representación gráfica del riesgo de mortalidad neonatal en un centro perinatal regional en Mérida, Yucatán, México The graphical display of neonatal mortality risk at a regional perinatal center in Merida, Yucatan, Mexico: The joint effect of birth weight and gestational age

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Lorenzo Osorno-Covarrubias

2002-07-01

Full Text Available Objetivo. Determinar el riesgo de mortalidad neonatal por edad gestacional y el peso al nacer. Material y métodos. Se estudió una cohorte de 19 668 neonatos que egresaron entre el 1 de enero de 1995 y el 31 de octubre de 1999 del Centro Médico Nacional Ignacio García Téllez, del tercer nivel de atención perinatal del Instituto Mexicano del Seguro Social de la Península de Yucatán. Se registraron el peso al nacer, edad gestacional y condición de egreso. Se calculó el riesgo absoluto (RA de mortalidad para cada semana de edad gestacional y grupo de peso. Resultados. El RA de mortalidad observado en neonatos de entre 34 a 44 semanas y peso mayor o igual a 2 250 g fue de 0.4%, de 15% para aquellos de entre 26 a 32 semanas con peso mayor o igual a 1000 g, y de 73% para los de entre las 26 a las 34 semanas, con peso al nacimiento de entre 750 y 1 000 g. Conclusione. El RA de mortalidad neonatal aumentó a menor. edad gestacional y peso. Los datos pueden ser utilizados como valores de referencia para nuestro hospital y para comparación con otros hospitales.Objective. To determine the neonatal mortality risk according to gestational age and birth weight. Material and Methods. The cohort consisted of 19 668 newborns of Centro Médico Nacional (National Medical Center Ignacio García Téllez, a tertiary level healthcare institution of the Instituto Mexicano del Seguro Social (Mexican Institute of Social Security, IMSS of the Yucatan Peninsula. All new-borns discharged from the hospital between January 1 st , 1995 and October 31 st , 1999 were included in the study. Birth weight, gestational age, and conditions upon discharge were recorded. Absolute risk (AR of mortality was calculated for each week-of-gestation- and birth group. Results. Observed AR in newborns 34 to 44 weeks of gestational age and weighing at least 2 250 g was 0.4, while that for those 26 to 32 weeks of gestational age and weighing between 1000 g was 15%. Conclusions. AR of

Dosimetry in thorax X-rays

International Nuclear Information System (INIS)

Pinedo S, A.; Hernandez O, M.; Duran M, H. A.; Gonzalez G, R.; Guerra M, J. A.; Salas L, M. A.; Vega C, H. R.; Rivera M, T.; Azorin N, J.

2009-10-01

The dose to the entrance of thorax during a radiological study has been measured in a phantom of paraffin and with thermoluminescent dosemeters. This work was realized in the living room 1 of the X-rays service of the General Hospital No. 1 IMSS in Zacatecas. For the study thermoluminescent dosemeters of CaSO 4 :Dy were used. The irradiation of the thoracic region is the more studied through the conventional radiology, method that continues occupying the first place as diagnostic in diverse pathologies due to generates images of the heart, lungs, spine, etc. As well as can to observe the location of subclavian catheters, nasogastric sound, endotracheal tubes and umbilical catheters. The magnitude of the dose that is received during the realization of this study type is not usually measured, since the main concern is to have a good image to make a good diagnostic. The measurements were carried out using parameters of the equipment that were defined with base to the experience of the technical radiologist. It was found that the irradiation field is not uniform and that in any point where the dose was measured it is not exceeded the 7 mGy settled by the Mexican Official Standard-157-SSA-1996 for a thorax study. (author)

E-learning y Comunicación Oral y Escrita. Una perspectiva sobre el diseño, la implementación y el impacto académico en el contexto universitario

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Mauro MARINO JIMÉNEZ

2015-12-01

Full Text Available El presente estudio analiza la experiencia desarrollada en la asignatura de Comunicación Oral y Escrita en un sistema de educación virtual para adultos en la Universidad San Ignacio de Loyola de Lima (Perú, a través de un estudio cuasiexperimental pretest y postest. Esta propuesta cuenta con una revisión del programa virtual en un entorno andragógico, la evaluación del diseño de acuerdo con la postura de diversos investigadores, las principales características de los productos generados por los estudiantes, el impacto académico propiamente dicho y la opinión estudiantil. El resultado de este análisis evidencia que no hay una diferencia significativa en el desarrollo de las competencias lingüísticas en los sistemas presencial y virtual; asimismo, revela la posibilidad de incorporar el desarrollo de competencias digitales en el entorno andragógico antes descrito; finalmente, estos resultados evidencian la posibilidad de un desarrollo promisorio de la educación virtual en el contexto universitario peruano.

Crisis del Café y el Desarrollo Regional

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Aguilar Zambrano Luis Ignacio

2003-08-01

Full Text Available

Aguilar, Luis Ignacio. "Crisis del Café y el Desarrollo Regional", cuadernos de Economía, V. XXII, n. 38, Bogotá, 2003, páginas 239-272.

Este articulo describe y analiza la situación de precios internacionales del café y su impacto en el sector cafetero colombiano. Se plantea que con la forma tradicional de producción, el café ha dejado de ser rentable y se propone y una nueva forma de entender el papel del sector cafetero en el desarrollo económico. El trabajo señala la importancia de la reorganización del sector cafetero en colombia y centra su atencia en la estructura de la propiedad y en la dotacion de factores para que los productores sean mas competitivos en el mercado internacional. Para un caso particular en un departamento colombiano, se describen en el trabajo las orientaciones de instituciones públicas y privadas hacia sectores diferentes al cafetero, cuyo objetivo es la mejora de las condiciones de vida de la poblacion afectada.

Management of severe sepsis: advances, challenges, and current status

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Martin-Loeches I

2015-04-01

Full Text Available Ignacio Martin-Loeches,1 Mitchell M Levy,2 Antonio Artigas31Multidisciplinary Intensive Care Research Organization (MICRO, St James’s University Hospital, Trinity Centre for Health Sciences, Dublin, Ireland; 2Brown University, Providence, RI, USA; 3Critical Care Center, CIBER Enfermedades Respiratorias, Sabadell Hospital, Corporació Sanitaria Universitaria Parc Tauli, Autonomous University of Barcelona, Barcelona, SpainAbstract: The complexity of treating severe sepsis and septic shock has been elucidated in myriad studies, particularly in the past 10 years. The development of clinical guidelines, insight into the effect of bundle elements, and results of clinical trials have brought to light further opportunities and questions in the approach to pharmaceutical interventions for the global challenge to save lives and reduce healthcare costs. Therapeutic interventions including fluid resuscitation, hemodynamic monitoring, glycemic control, corticosteroids, and antimicrobial therapy and stewardship inform outcomes. Research on biomarkers, use of mesenchymal stem cells, blood purification, immunoglobulins, and antioxidative treatments apropos the immune response may soon yield viable therapies.Keywords: sepsis, septic shock, guidelines, critical care, biomarkers, surviving sepsis campaign

Proporcionalidad y equidad en las contribuciones. El amparo fiscal en México, 1917-1968

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Carlos de Jesús Becerril Hernández

2015-01-01

Full Text Available El juicio de amparo ha sido comúnmente identificado como parte del proceso de la modernización jurídica liberal de la segunda mitad del siglo XIX. No obstante, el amparo fiscal, que tiene que ver directamente con el reclamo por la proporcionalidad y equidad de las contribuciones contenidas en el artículo 31, fracción IV, de la Constitución Política de los Estados Unidos Mexicanos de 1917, no fue reconocido como jurisprudencia inmediatamente aplicable; el criterio del ministro Ignacio L. Vallarta (1830-1893 sobre la incapacidad de la Corte para conocer de este recurso fue vigente hasta bien entrado el siglo XX. El amplio arco temporal (1917-1968 cubierto por este ensayo tratará de explicar, a la luz del derecho constitucional y del desempeño económico, por qué la justicia federal se negó a amparar y proteger a los causantes, bajo el argumento de que la Corte no era juez ni órgano revisor de las leyes expedidas por el Congreso.

[Screening for malnutrition among hospitalized patients in a Colombian University Hospital].

Science.gov (United States)

Cruz, Viviana; Bernal, Laura; Buitrago, Giancarlo; Ruiz, Álvaro J

2017-04-01

On admission, 30 to 50% of hospitalized patients have some degree of malnutrition, which is associated with longer length of stay, higher rates of complications, mortality and greater costs. To determine the frequency of screening for risk of malnutrition in medical records and assess the usefulness of the Malnutrition Screening Tool (MST). In a cross-sectional study, we searched for malnutrition screening in medical records, and we applied the MST tool to hospitalized patients at the Internal Medicine Wards of San Ignacio University Hospital. Of 295 patients included, none had been screened for malnutrition since hospital admission. Sixty one percent were at nutritional risk, with a higher prevalence among patients with HIV (85.7%), cancer (77.5%) and pneumonia. A positive MST result was associated with a 3.2 days increase in length of hospital stay (p = 0.024). The prevalence of malnutrition risk in hospitalized patients is high, but its screening is inadequate and it is underdiagnosed. The MST tool is simple, fast, low-cost, and has a good diagnostic performance.

The basement of the Punta de Este Terrane: A meso proterozoic heritage at the eastern border of Rio de La Plata craton

International Nuclear Information System (INIS)

Preciozzi, F.; Peel, E.; Sanchez, L.; Basei, M.

2005-01-01

U-Pb zircon ages between 1000 and 900 Ma corresponding to the nuclei of zircon crystals extracted from the basement of the Punta del Este Terrane (Eastern Uruguay) allowed the correlation of the protoliths of this domain with rocks attributed to the Namaqua Belt in Southwestern Africa. SHRIMP ages obtained for the ortho gneissic rocks allowed to place at ca. 750 Ma the generations of gneisses and migmatites. Differently from what occurred in Africa, reworking of this crustal segment during the Brasiliano-Pan african orogenesis was very intense, reaching the granulite facies around 640Ma. Acid volcanic and volcaniclastic rocks (Sierra de Aguirre Formation) with ages around 570 Ma, late sedimentary basins (San Carlos Formation) and post-tectonic granitoids (Santa Teresa and José Ignacio batholith s) mark the end of the events related with the Brasiliano/Pan-African orogenesis. The final collision between the Punta del Este Terrane and the western domains represented by the Dom Feliciano Belt and the Río de La Plata Craton may have occurred at around 535 Ma

Uso de la simulación con SuperPro Designer en las prácticas de laboratorio de tratamiento de agua y residuales Using SuperPro Designer simulation in water and waste water treatment laboratory practices

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Sarah Isabel Barreto Torrella

2017-01-01

Full Text Available This article aims to describe results of introducing simulation practice, using Super Pro Designer program, in laboratory practices of Water and Waste Water Treatment in Chemical Engineering career of the “Ignacio Agramonte Loynaz” University and designed teaching strategy for that purpose. The subject was studied to set its system of contents, frontier and environment, the relation to other subjects and the system, subsystem and learning dynamics as a whole. A system of laboratory practices and a teaching strategy to use the simulator SuperPro Designer were design. Learning and skills development were assessed through self-preparation control, performance in doing tasks, findings registered in the corresponding reports and application in other homework tasks. The set of activities designed favored students’ independent work of students by presenting problematic situations in a nice graphical environment and under the teacher leadership continue varying operating conditions to evaluate results. The strategy fostered the horizontal and vertical connection of subjects of and the fulfillment of language, economy and ICT curricular strategies. Keywords: , , , .

UN ACERCAMIENTO TEÓRICO A LA CREACIÓN DE MOTIVOS PROFESIONALES PEDAGÓGICOS EN ESCOLARES PRIMARIOS

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María Isabel Bardina Torres

2015-12-01

Full Text Available El presente artículo tiene como objetivo revelar los fundamentos filosóficos, sociológicos, psicológicos y pedagógicos del proceso de formación de motivos relacionados con el magisterio en escolares del segundo ciclo de la Educación Primaria. Surge como parte de la labor investigativa que al respecto se desarrolla en el Proyecto de Orientación Profesional de la Universisdad “Ignacio Agramonte Loynaz”. Para ello, se realiza una sistematización epistemológica de las motivaciones relacionadas con la profesión en escolares preadolescentes. En este proceso se utilizaron métodos científicos de nivel teórico y empírico sobre una base dialéctica materialista. Los fundamentos que se presentan constituyen el soporte científico de los recursos que pueden utilizarse en la práctica pedagógica para desarrollar el interés de los escolares por la profesión del magisterio.

Bioaccumulation of methyl parathion and its toxicology in several species of the freshwater community in Ignacio Ramirez dam in Mexico.

Science.gov (United States)

De La Vega Salazar, M Y; Tabche, L M; García, C M

1997-10-01

Environmental contamination by pesticides, including the presence of chemical residues in aquatic wildlife, is a widespread ecological problem. Methyl parathion (MP), a widely used organophosphorate insecticide, is a potent neurotoxic in both vertebrates and invertebrates. The effect of a subchronic exposure to MP in aquatic organisms was evaluated in a natural ecosystem measuring acetyl cholinesterase (AChE) and gamma glutamil transpeptidase (GGT) activity. Two samples were conducted. Physicochemical characterization was done at each sampling time and organisms were collected. MP and metabolite 4-nitrophenol (4-NP) concentrations were measured in water sediment and organisms. The major differences in physical features between season were an increase of turbidity and salinity and depletion of dissolved oxygen in the rainy season. MP and 4-NP are bioconcentrated in organisms in response to environmental stress. MP concentration was measured in different size/age and reproductive stages separately. A significant concentration in reproductive tissues (plants)/unborn progeny (animals) was always found, and this can affect egg viability. The metabolite 4-NP is bioaccumulated and is toxic because it causes an increase of AChE activity. GGT activity was higher than that in controls. The increase in enzymatic activity provides a detoxification mechanism from chronic sublethal exposure, when hepatic glutation depletion occurs, and may be an indicator of liver damage.

Comportamiento del proceso de adaptación en un círculo infantil

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Odilia Guerra Vallejo

2000-02-01

Full Text Available Se realizó un estudio descriptivo de eficacia en el Círculo Infantil "XX Aniversario", del Policlínico "Ignacio Agramonte" del municipio Camagüey, entre septiembre y diciembre de 1993, en 23 niños que comenzaron el proceso de adaptación para conocer su comportamiento. Se incluuyeron variables sobre las incidencias de la planificación, realización, control y atención y orientación a los padres, causas de las dificultades y medidas tomadas. Entre los niños estudiados predominaron los del 2do. año de vida (56,5 %, del sexo masculino (65,2 %, de padres con buen nivel económico (100 % y de escolaridad (93 %, procedentes de familias integradas (60,8 %. El uso del chupete (30,4 % y la alteración de los hábitos alimentarios (21,7 % predominaron entre los hábitos negativos; mientras que las enfermedades respiratorias crónicas (47,7 % y las alteraciones del lenguaje (43,4 % entre los antecedentes patológicos personales. Finalmente las dificultades encontradas fueron: inadecuada planificación y realización del proceso, repercusión negativa de las infecciones respiratorias agudas y el manejo inadecuado por la familia, y presentación frecuente de adaptaciones difícilesA descriptive efficacy study was conducted at the " XX Aniversario" Day Care Center of the " Ignacio Agramonte" Polyclinic, in the municipality of Camagüey, from September to December, 1993. 23 children that started the process of adaptation were studied to know their behaviour. Variables on the incidences of planning, making, control and attention and guidance of parents, as well as the causes of the dificulties and the measures taken were included. 2-year-old children ( 56. 5 % predominated among the studied children. 65. 2 % were males, 100 % had parents with a good economic level, 93 % had parents with an adequate educational level and 60. 8 % were from families integrates into society. The use of pacifier (30.4 % and the alteration of the nutritional habits ( 21. 7

Punta del este terrane: meso proterozoic basement and neo proterozoic cover

International Nuclear Information System (INIS)

Preciozzi, F.; Sanchez Bettucci, L.; Basei, M.; Peel, E.; Oyhantcabal, P.; Cordani, U.

2003-01-01

�nchez, 1999). Rocha Formation may correlate with the supra crustal Gariep Group. Rocha-Gariep basin closure and following deformation would have been occurred ca. 545 to 570 Ma. Cerros de Aguirre formation (Campal and Gancio, 1993) represents a volcaniclastic sequence, of Vendian age, with an intermediate to acidic composition. This formation had suffered compression generating open folds with axial orientation N30º-40ºE and local development of axial plane cleavage. Isotropy granitoids represent the most important magmatic manifestation that affected PET. These granitoides of calc alkaline character includes José Ignacio and Santa Teresa plutons among others. Using Rb/Sr mineral isochron, ages of 611 – 590 Ma for José Ignacio pluton and of 550 – 537 Ma for Santa Teresa pluton were obtained

Helping organizations to address their effort toward the implementation of improvements in their software process

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Mirna Ariadna Muñoz-Mata

2015-01-01

Full Text Available Debido a la importancia de las pequeñas y medianas empresas (pymes de desarrollo de software para la industria del software, es importante garantizar la calidad de sus productos, para lo cual la mejora de sus procesos ofrece un camino atractivo para lograrlo. Desafortunadamente, la falta de conocimientos que existe en las pymes sobre cómo o dónde dirigir su esfuerzo de mejora hace que la implementación de mejoras sea un camino lleno de obstáculos, la mayoría de veces imposible de lograr. Este artículo presenta un marco de trabajo cuyo objetivo es ayudar a las pymes a encontrar un punto de inicio para dirigir sus esfuerzos de mejora, basado en la identifi cación de sus problemas principales. Además, el marco de trabajo proporciona una guía para iniciar la implementación de la mejora (punto de inicio, referente a los modelos, estándares y/o metodologías ágiles que pueden ser usados como referencia, basada en sus necesidades, características y cultura de trabajo. Finalmente, el artículo incluye un caso de estudio en el que se muestran los resultados de la implementación del marco de trabajo en cuatro pymes de la región de Zacatecas.

Selección de estrategias para la implementación de Mejoras de Procesos Software

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Brenda Liliana Durón del Villar

2013-12-01

Full Text Available La mejora de procesos software se ha convertido en la forma más lógica y obvia de dirigir la creciente necesidad de aumentar la competitividad en las empresas de desarrollo de software. Desafortunadamente no todas las implementaciones de mejoras en los procesos tienen el rendimiento deseado, debido a que los modelos y estándares existentes centran su atención en qué actividades implementar sin abordar el cómo implementarlas. Sin embargo, la identificación de qué actividades implementar no es suficiente y el conocimiento del cómo implementarlas es requerido para el éxito de la implementación de iniciativas de Mejoras de Procesos Software (MPS en las empresas de desarrollo de software. En este trabajo se presenta los resultados tanto de una revisión del estado actual en la implementación de MPS lograda mediante una revisión literaria así como los resultados de un análisis de empresas locales de Zacatecas logrado mediante la aplicación de entrevistas. Finalmente, se presenta una propuesta para el establecimiento de estrategias para la implementación de MPS basadas en los aspectos contextuales en los cual el software es desarrollado y entregado, tal que, pueda ser seleccionada una estrategia acorde a las necesidades y cultura de trabajo de la organización.

Wind speed forecasting in three different regions of Mexico, using a hybrid ARIMA-ANN model

Energy Technology Data Exchange (ETDEWEB)

Cadenas, Erasmo [Facultad de Ingenieria Mecanica, Universidad Michoacana de San Nicolas de Hidalgo, Santiago Tapia No. 403, Centro (Mexico); Rivera, Wilfrido [Centro de Ivestigacion en Energia, Universidad Nacional Autonoma de Mexico, Apartado Postal 34, Temixco 62580, Morelos (Mexico)

2010-12-15

In this paper the wind speed forecasting in the Isla de Cedros in Baja California, in the Cerro de la Virgen in Zacatecas and in Holbox in Quintana Roo is presented. The time series utilized are average hourly wind speed data obtained directly from the measurements realized in the different sites during about one month. In order to do wind speed forecasting Hybrid models consisting of Autoregressive Integrated Moving Average (ARIMA) models and Artificial Neural Network (ANN) models were developed. The ARIMA models were first used to do the wind speed forecasting of the time series and then with the obtained errors ANN were built taking into account the nonlinear tendencies that the ARIMA technique could not identify, reducing with this the final errors. Once the Hybrid models were developed 48 data out of sample for each one of the sites were used to do the wind speed forecasting and the results were compared with the ARIMA and the ANN models working separately. Statistical error measures such as the mean error (ME), the mean square error (MSE) and the mean absolute error (MAE) were calculated to compare the three methods. The results showed that the Hybrid models predict the wind velocities with a higher accuracy than the ARIMA and ANN models in the three examined sites. (author)

Test and validation of the iterative code for the neutrons spectrometry and dosimetry: NSDUAZ; Prueba y validacion del codigo iterativo para la espectrometria y dosimetria de neutrones: NSDUAZ

Energy Technology Data Exchange (ETDEWEB)

Reyes H, A.; Ortiz R, J. M.; Reyes A, A.; Castaneda M, R.; Solis S, L. O.; Vega C, H. R., E-mail: alfredo_reyesh@hotmail.com [Universidad Autonoma de Zacatecas, Unidad Academica de Ingenieria Electrica, Av. Lopez Velarde 801, Col. Centro, 98000 Zacatecas (Mexico)

2014-08-15

In this work was realized the test and validation of an iterative code for neutronic spectrometry known as Neutron Spectrometry and Dosimetry of the Universidad Autonoma de Zacatecas (NSDUAZ). This code was designed in a user graph interface, friendly and intuitive in the environment programming of LabVIEW using the iterative algorithm known as SPUNIT. The main characteristics of the program are: the automatic selection of the initial spectrum starting from the neutrons spectra catalog compiled by the International Atomic Energy Agency, the possibility to generate a report in HTML format that shows in graph and numeric way the neutrons flowing and calculates the ambient dose equivalent with base to this. To prove the designed code, the count rates of a spectrometer system of Bonner spheres were used with a detector of {sup 6}LiI(Eu) with 7 polyethylene spheres with diameter of 0, 2, 3, 5, 8, 10 and 12. The count rates measured with two neutron sources: {sup 252}Cf and {sup 239}PuBe were used to validate the code, the obtained results were compared against those obtained using the BUNKIUT code. We find that the reconstructed spectra present an error that is inside the limit reported in the literature that oscillates around 15%. Therefore, it was concluded that the designed code presents similar results to those techniques used at the present time. (Author)

El Rey del Tomate. Migrant Political Transnationalism and Democratization in Mexico.

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Matt Bakker

2003-01-01

Full Text Available La ampliamente publicitada campaña política transnacional de Andrés Bermúdez, que contendió como candidato para alcalde de Jerez, Zacatecas, es analizada en términos de un continuum de marcos teóricos sobre teoría y práctica de la democracia. Con base en intensivas entrevistas cualitativas con participantes importantes de la campaña, este estudio considera las siguientes cuestiones: ¿Hasta qué punto la candidatura de Bermúdez contribuye a la apertura del sistema político mexicano hacia la participación electoral de losmigrantes? ¿Qué implicaciones tienen los procesos políticos aquí mencionados para una implementación a gran escala de la doble ciudadanía, incluyendo el voto en el extranjero y las campañas transnacionales de migrantes mexicanos que viven en los Estados Unidos? ¿En qué contribuye el caso de Bermúdez para nuestro conocimiento teórico sobre el carácter y significado del transnacionalismo político de los migrantes en el momento presente? Las respuestas a estos cuestionamientos hacen posible determinar el papel que tuvo la campaña de Bermúdez en el proceso actual de democratización del México contemporáneo.

Discovery of the fossil otter Enhydritherium terraenovae (Carnivora, Mammalia) in Mexico reconciles a palaeozoogeographic mystery.

Science.gov (United States)

Tseng, Z Jack; Pacheco-Castro, Adolfo; Carranza-Castañeda, Oscar; Aranda-Gómez, José Jorge; Wang, Xiaoming; Troncoso, Hilda

2017-06-01

The North American fossil otter Enhydritherium terraenovae is thought to be partially convergent in ecological niche with the living sea otter Enhydra lutris , both having low-crowned crushing teeth and a close association with marine environments. Fossil records of Enhydritherium are found in mostly marginal marine deposits in California and Florida; despite presence of very rich records of fossil terrestrial mammals in contemporaneous localities inland, no Enhydritherium fossils are hitherto known in interior North America. Here we report the first occurrence of Enhydritherium outside of Florida and California, in a land-locked terrestrial mammal fauna of the upper Miocene deposits of Juchipila Basin, Zacatecas State, Mexico. This new occurrence of Enhydritherium is at least 200 km from the modern Pacific coastline, and nearly 600 km from the Gulf of Mexico. Besides providing further evidence that Enhydritherium was not dependent on coastal marine environments as originally interpreted, this discovery leads us to propose a new east-to-west dispersal route between the Florida and California Enhydritherium populations through central Mexico. The proximity of the fossil locality to nearby populations of modern neotropical otters Lontra longicaudis suggests that trans-Mexican freshwater corridors for vertebrate species in riparian habitats may have persisted for a prolonged period of time, pre-dating the Great American Biotic Interchange. © 2017 The Author(s).

Biosorption of lead phosphates by lead-tolerant bacteria as a mechanism for lead immobilization.

Science.gov (United States)

Rodríguez-Sánchez, Viridiana; Guzmán-Moreno, Jesús; Rodríguez-González, Vicente; Flores-de la Torre, Juan Armando; Ramírez-Santoyo, Rosa María; Vidales-Rodríguez, Luz Elena

2017-08-01

The study of metal-tolerant bacteria is important for bioremediation of contaminated environments and development of green technologies for material synthesis due to their potential to transform toxic metal ions into less toxic compounds by mechanisms such as reduction, oxidation and/or sequestration. In this study, we report the isolation of seven lead-tolerant bacteria from a metal-contaminated site at Zacatecas, México. The bacteria were identified as members of the Staphylococcus and Bacillus genera by microscopic, biochemical and 16S rDNA analyses. Minimal inhibitory concentration of these isolates was established between 4.5 and 7.0 mM of Pb(NO 3 ) 2 in solid and 1.0-4.0 mM of Pb(NO 3 ) 2 in liquid media. A quantitative analysis of the lead associated to bacterial biomass in growing cultures, revealed that the percentage of lead associated to biomass was between 1 and 37% in the PbT isolates. A mechanism of complexation/biosorption of lead ions as inorganic phosphates (lead hydroxyapatite and pyromorphite) in bacterial biomass, was determined by Fourier transform infrared spectroscopy and X-ray diffraction analyses. Thus, the ability of the lead-tolerant isolates to transform lead ions into stable and highly insoluble lead minerals make them potentially useful for immobilization of lead in mining waste.

Papers of the Fifth Annual Congress of the Sociedad Mexicana de Seguridad Radiologica, A.C., 2. Regional Congress on Radiological and Nuclear Safety. Vol. 2 (pt.2)

International Nuclear Information System (INIS)

1993-11-01

The fulfillment of the Fifth Annual Congress of the Sociedad Mexicana de Seguridad Radiologica, A.C., this time inside the frame of the Second Regional Congress of Radiological and Nuclear Safety, is no doubt an event that approach us to make of this forum the most important for the exchange of ideas and the approaching among the members of our nuclear community. This time, the beautiful colonial city of Zacatecas, welcome us for this event, gathering fifty works in the areas of fuel cycle, power reactor operation, reactor physics, research reactors, transient analysis and instrumentation and experimental techniques. This significant number of works reaffirm the great interest of the nuclear community in to take part, presenting its most recent developments. The reporting belongs to seven of the main institutions of the country who dedicate, or are related with the technological development of the nuclear area and its different branches. With regard to participants of foreign countries, papers representing to Argentina, Brazil, Chile, United States of North America and Peru are included. The efforts of all the members of the Sociedad Mexicana de Seguridad Radiologica, A.C. has been addressed to do of the event a mean to make easy the exchange of ideas and to get acquainted with the work of other colleagues, in an ambient of warmth and surmounting. (Author)

Test and validation of the iterative code for the neutrons spectrometry and dosimetry: NSDUAZ

International Nuclear Information System (INIS)

Reyes H, A.; Ortiz R, J. M.; Reyes A, A.; Castaneda M, R.; Solis S, L. O.; Vega C, H. R.

2014-08-01

In this work was realized the test and validation of an iterative code for neutronic spectrometry known as Neutron Spectrometry and Dosimetry of the Universidad Autonoma de Zacatecas (NSDUAZ). This code was designed in a user graph interface, friendly and intuitive in the environment programming of LabVIEW using the iterative algorithm known as SPUNIT. The main characteristics of the program are: the automatic selection of the initial spectrum starting from the neutrons spectra catalog compiled by the International Atomic Energy Agency, the possibility to generate a report in HTML format that shows in graph and numeric way the neutrons flowing and calculates the ambient dose equivalent with base to this. To prove the designed code, the count rates of a spectrometer system of Bonner spheres were used with a detector of 6 LiI(Eu) with 7 polyethylene spheres with diameter of 0, 2, 3, 5, 8, 10 and 12. The count rates measured with two neutron sources: 252 Cf and 239 PuBe were used to validate the code, the obtained results were compared against those obtained using the BUNKIUT code. We find that the reconstructed spectra present an error that is inside the limit reported in the literature that oscillates around 15%. Therefore, it was concluded that the designed code presents similar results to those techniques used at the present time. (Author)

Evaluación de un cluster bajo agricultura protegida en México

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Luz Evelia Padilla-Bernal

2012-01-01

Full Text Available El naciente cluster de tomate bajo agricultura protegida en Zacatecas enfrenta el reto de participar en los mercados globales de una manera sostenible; una respuesta viable para ello es elevar su capacidad de upgrading. En este trabajo se determina la relación entre la eficiencia colectiva en el upgrading del cluster. La información se obtuvo a través de un cuestionario aplicado a técnicos de las unidades de producción (UP, el cual se complementó con entrevistas a propietarios o gerentes, investigadores y funcionarios gubernamentales; posteriormente, se hizo una clasificación de las UP por nivel tecnológico aplicando la técnica de análisis de conglomerado con lo que se obtuvo el índice de eficiencia colectiva, el tipo de gobernanza de las cadenas de valor con las que se relacionan las agroempresas y los tipos de upgrading logrados. Se encontró que las economías externas fueron más dominantes que las acciones conjuntas; la eficiencia colectiva y el upgrading se encuentran positivamente relacionados; asimismo, se observó que el alto nivel tecnológico es condición necesaria, más no suficiente, para que las agroempresas permanezcan competitivas en el mercado global, por lo que se requiere elevar su capacidad de upgrading.

Carry-over effects of winter location contribute to variation in timing of nest initiation and clutch size in black brant (Branta bernicla nigricans)

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Schamber, Jason L.; Sedinger, James S.; Ward, David H.

2012-01-01

We assessed carry-over effects from winter location on timing of nest initiation and clutch size of Black Brant (Branta bernicla nigricans) using observations of individually marked brant breeding at the Tutakoke River colony in Alaska, and wintering along a latitudinal gradient at three areas on the Pacific coast of Baja California: northernmost Bahia San Quintin (BSQ), Laguna Ojo de Liebre (LOL), and southernmost Laguna San Ignacio (LSI). Black Brant initiated nests according to a north—south trend in winter location, although year was a stronger predictor of initiation date than was wintering site. Female Black Brant that wintered at BSQ initiated nests 2.2 days earlier than females from LSI. Conversely, Black Brant showed only a weak south—north trend in clutch size; individuals from LSI laid slightly larger clutches than individuals from BSQ, probably because a smaller proportion of only high-quality females from the southernmost wintering area in Baja California were able to attain the nutritional condition necessary to breed. These results indicate that winter location can influence individual reproductive performance and, potentially, limit population growth of southern segments of the wintering Black Brant population.

[Cardiology was born with the modern medical science].

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de Micheli, Alfredo

2015-01-01

Modern medical science was born in the post-Renaissance age and began to consolidate towards the middle of the XVII century thanks to physicists, physiologists and biologists, most of whom were direct or indirect pupils of Galileo. The discovery of blood circulation by Harvey is now considered the only progress in physiology at the beginning of the XVII century, comparable to the current advances seen in physical sciences. The history of this exploit could be written from view point of the progressive advance in knowledge. In his experiments, Harvey referred to the authentic not imaginary experiments, and put forward irrefutable quantitative arguments. We can therefore claim that his discovery of blood circulation was the first proper explanation of an organic process and the starting point leading to experimental physiology. So it seems justified to assert that modern medical science did not all rise suddenly, but was gradually structured starting from the middle of the XVII century following the path traced by William Harvey in light of Galileo's thought. Copyright © 2014 Instituto Nacional de Cardiología Ignacio Chávez. Published by Masson Doyma México S.A. All rights reserved.

Mujer y violencia: ¿un problema de salud comunitario?

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Alexis Culay Pérez

Full Text Available Se realizó un estudio descriptivo transversal con el objetivo de conocer el comportamiento de la violencia contra la mujer en el microdistrito "Ignacio Agramonte", perteneciente al policlínico docente "Tula Aguilera" del municipio Camagüey, en el período comprendido desde el 1° de agosto de 1997 al 31 de enero de 1998. De un universo de 1088 mujeres entre 15 y 49 años se le realizó una encuesta a 310 mujeres - el tamaño de la encuesta se calculó utilizando el programa estadístico nombrado EPIDAT- resultando que 226 mujeres reportaron algún tipo de violencia para un 72,9 %. Se concluyó que la violencia psicológica fue reportada por la mitad de las mujeres, la violencia sexual por una 3ra parte y la violencia física fue la menos reportada. La violencia fue mayormente señalada por mujeres de 30-39 años con un nivel de escolaridad pre-universitario. La gran mayoría de las mujeres violentadas no solicitaron ayuda profesional

La infección del tracto urinario (ITU en un hospital universitario de Santafé de Bogotá: etiología y evaluación de los antimicrobianos

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S. Máttar

1994-09-01

Full Text Available Los objetivos de este trabajo fueron determinar la etiología y la sensibilidad antimicrobiana en la infección del tracto urinario (ITU. Para ello, se analizaron prospectivamente 245 orinas extra e intrahospitalarias del Hospital Universitario San Ignacio de Santafé de Bogotá. Las orinas se estudiaron a través del sedimento, Gram, tira reactiva y cultivo bacteriológico; la susceptibilidad antimicrobiana se realizó por el método de Kirby Bauer. De las 245 orinas se descartaron 45; las 200 orinas restantes fueron cultivadas, resultando 100 positivas y 100 negativas. El agente más frecuentemente aislado fue E. coli (85%, seguido de Proteus sp. (6%. Los microorganismos aislados presentaron una alta sensibilidad a la cefotaxima (100%, norflocacina (98%, netilmicina (98%, amikacina (98%, nitrofurantoína (92%, gentamicina (86%, ácido nalidixico (78% y una sensibilidad del 57% frente al trimetoprim-sulfametoxasol y el 25% a la ampicilina. Los antimicrobianos eficaces para el tratamiento de la ITU, por su bajo costo y alta actividad sobre los microorganismos encontrados, son: nitrofurantoina, norfloxacina, amikacina, netilmicina, gentamicina y ácido nalidíxico.

[The knowledge of animal respiration as a combustion phenomenon].

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de Micheli, Alfredo

2014-01-01

The different stages leading to knowledge of the phenomenon of animal breathing are going from some writings in Corpus Hippocraticum to Aristoteles' and Galen's works, who considered the heart as the source of the animal heat. Later, Miguel Servet suggested that the inspired air can achieve other functions besides cooling the blood. After that, different explications of the animal heat were raised. About 1770, due to progress of knowledge in the chemistry field, first Mayow and later Black began to consider the animal respiration as a combustion. The important treatise Méthode de nomenclature chimique, published by Guyton de Morveau et al. in 1787 and soon after the Traité élémentaire de chimie de Lavoisier (1789) provided a solid support to Lavoisier's thought. This way on arrived to consider analogous the respiration and combustion phenomena. Studies on the animal respiration phenomenon continued in xix century and in the following century it was possible to apply thermodynamic principles to biology: "generalized thermodynamics". Copyright © 2013 Instituto Nacional de Cardiología Ignacio Chávez. Published by Masson Doyma México S.A. All rights reserved.

Salvador Alvarado y las elecciones de 1920, una candidatura olvidada

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Francisco Iván Méndez Lara

2017-09-01

Full Text Available El presente artículo muestra una de las facetas menos estudiadas del general Salvador Alvarado: su papel en la sucesión presidencial de 1920. A través de la revisión de fuentes poco exploradas como los periódicos El Heraldo de México y El Monitor Republicano podrá observarse la complejidad y tensión del ambiente político en la coyuntura electoral. Alvarado modificó su postura conforme avanzó la contienda, de una actitud belicosa que lo llevó a crear su propio partido político contra los generales Pablo González y Álvaro Obregón, pasó a ser un aliado del grupo sonorense en la lucha contra la imposición del candidato carrancista, Ignacio Bonillas. Además de comprender a un Alvarado interesado en la silla presidencial, este trabajo muestra el accionar de los periódicos capitalinos como espacios de discusión e impulsores de plataformas políticas en las elecciones que posicionaron a los sonorenses en la cúspide del poder.

Il mito di Lope de Aguirre in due opere della drammaturgia franchista e postfranchista

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Arianna Fiore

2016-12-01

Full Text Available Twentieth-century Spanish theatre is often inspired by the figure of Lope de Aguirre, with motifs and modes that change depending on time, considering 1939 and 1975 two crucial watershed moments in the cultural history of the Iberian Peninsula. The dramatic works analysed date back precisely to the years of Franco’s dictatorship and the democratic period: in 1941 Gonzalo Torrente Ballester was the first twentieth-century dramatist to devote a text, entitled Lope de Aguirre, to the life of the Basque conqueror. The work, for reasons that will be explored in the present essay, was never staged in Franco’s time: Ballester’s Aguirre is a romantic hero who defies the king to defeat the injustices which he is forced to witness, and everyone, men, women, blacks, indios, will at last be free under his red-black banner. Dona Elvira, Imaginate Euskadi (1985, by Ignacio Amestoy Egiguren, is the first published work in the democratic era. It can be read as a great metaphor of the Basque issue, the tragedy of Euskadi and the climate of violence and tension that characterized the Basque Country in the 1980s.

Carácter interdisciplinario de la modelación computacional en la solución de problemas de salud

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González Carbonell Raide Alfonso

Full Text Available La solución de los problemas de salud requiere de la interrelación entre diferentes ramas científicas y tecnológicas, tales como la Biomecánica, las tecnologías de la información, la ingeniería y las ciencias médicas. La importancia de la comunicación interdisciplinaria en las universidades fundamenta la creación de un grupo de investigación que fusiona el conocimiento de la mecánica clásica con las disciplinas de la salud y la participación de pacientes, técnicos, ingenieros, médicos y estudiantes. En el trabajo se realiza una reflexión sobre el carácter interdisciplinario de las investigaciones, cómo se inserta la Ingeniería Mecánica desde la modelación en la solución de problemas de salud y se brindan algunos resultados obtenidos por los miembros del Grupo de Biomecánica y Bioingeniería de la Universidad "Ignacio Agramonte y Loynaz" de Camagüey.

La atención de los enfermos y discapacitados en el hogar: Retos para el sistema de salud mexicano Household care for ill and disabled persons: challenges for the Mexican health care system

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Gustavo Nigenda

2007-08-01

Full Text Available OBJETIVO: Identificar el patrón de dedicación de tiempo y analizar los mecanismos de atención que utilizan los miembros de familias con enfermos y discapacitados en el hogar. MATERIAL Y MÉTODOS: Para cumplir con el primer objetivo se analizó la base de datos de la Encuesta Nacional de Uso de Tiempo 2002. Para cumplir con el segundo objetivo se levantó información a través de entrevistas en profundidad y grupos focales en Coahuila, Sinaloa, Zacatecas, Jalisco, Oaxaca, Yucatán y el Distrito Federal de junio a diciembre de 2004. RESULTADOS: Se estima que 1 738 756 personas dedicaron tiempo a cuidar enfermos y que 1 496 616 se encargaron de cuidar discapacitados, la semana anterior al levantamiento de la encuesta. Existen diferencias importantes por género y nivel de escolaridad en la dedicación de horas a estas actividades. Por otra parte, los hogares tienden a reorganizarse para ofrecer atención a enfermos y discapacitados. En el hogar, son las mujeres quienes asumen la mayor responsabilidad en el cuidado. Existen diferencias importantes en la atención a enfermos y discapacitados en términos del desgaste físico y emocional que sufre el cuidador. CONCLUSIONES: Las implicaciones de los resultados en la atención a enfermos y discapacitados son enormes para un futuro cercano. El envejecimiento de la población y el aumento de las enfermedades crónicas requieren de una mayor articulación entre el ámbito institucional de atención y el ámbito del hogar, a fin de que ambos puedan complementar sus capacidades.OBJECTIVE: To identify the pattern of time devoted by members of Mexican households to providing care to ill and disabled family members. To analyze the mechanisms used by families to provide care to an ill or disabled member. MATERIAL AND METHODS: The database of the 2002 National Survey of Time Use was explored to accomplish the first objective. The second objective was accomplished by collecting primary data through in

Ignacio García de Escucha, arquitecto, escultor y ensamblador asturiano-bogotano (1580-1629): aproximación a su vida y obra

OpenAIRE

Gila Medina, Lázaro; Herrera García, Francisco Javier

2011-01-01

Este trabajo tiene como fin sacar a la luz a uno de los personajes más importantes de la vida artística en el Reino de la Nueva Granada (Colombia), durante parte del primer tercio del siglo XVII. Nacido en 1580 en Porceyo, Gijón, tras un primer aprendizaje en el entorno familiar, a comienzos del siglo xvii arribó a Toledo completando su formación en el taller de Alonso Sánchez Cotán. Habiendo emparentado con su maestro al casar con su hermana María, desavenencias conyugales le llevaron, hacia...

La Biblioteca del Monasterio de Fitero a fines del Renacimiento e inicio del Barroco

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Ostolaza Elizondo, Maria Isabel

2013-06-01

Full Text Available The article describes the time of the creation of library of the Cistercian monastery of Fitero (Navarre. Over the years it became one of the most important in the kingdom, until its decline trougth secularisations and confiscations of property suffered by the convent in the 19th century. The data on its initial phase come from the books of the abbots Fray Marcos de Villalva and Fray Ignacio Fermín de Ibero, both originally from Castile, who were appointed abbots vy virtue of the righ to royal patronage exercised by King Philip II. Although most of the books belong, as could be expected to an ecclesiastical library, a surprising case inthat of Abbot Ibero for the wide range of subjets he covers and the high quality of the editions, often accompanied by engravings and musical notes. Through these books, which are either identified through the exlibris or references ot notarial list, one can perceive the important ecclesiastical issues of the day: the reform of the monasteries and the practice of Orthodox Catholicism, and also secular issues that came to the knowledge of the monastery related to the two great powers of the Catholic world, the monarchy and the papacy.El artículo recoge los momentos de la creación de la biblioteca del monasterio cisterciense de Fitero (Navarra, que sería con el tiempo una de las más importantes de ese reino, hasta su mengua por causa de las distintas exclaustraciones y desamortizaciones que sufrió el convento en el s. XIX. Los datos de estos primeros tiempos corresponden a las librerías de fray Marcos de Villalva y fray Ignacio Fermín de Ibero, ambos procedentes de Castilla y nombrados abades fiterenses en virtud del derecho de patronato real ejercido por Felipe II. Aunque la mayoría de los libros corresponden a lo que se entendería como lógico en una biblioteca eclesiástica, sorprende en el caso de la del abad Ibero la amplitud de la temática y la calidad de las ediciones, en muchos casos con grabados

[Quality of professional life and musculoskeletal disorders in nurses].

Science.gov (United States)

Rodarte-Cuevas, Lilia; Araujo-Espino, Roxana; Trejo-Ortiz, Perla María; González-Tovar, José

To characterize the conditions of quality of working life, the presence of muscle- skeletal disorders and the association between these variables in nursing staff of a public hospital in Zacatecas, Mexico. A cross-sectional study with descriptive-correlational scope was designed. A stratified random sampling per shift was used in 107 cases. The Questionnaire Professional Quality of Life (CVP-35) was applied as well as the Nordic Questionnaire Standardized for musculoskeletal pain and work-related risk factors questionnaire. The quality of working life gained an average of 55.62 (SD=13.57), the intrinsic motivation was the best rated component with (M=75.06, SD=18.44), contrary to managerial support that got the lowest scores with (M=43.74, SD=21.71). The presence of risk factors in the development work of musculoskeletal problems obtained a mean of 50.10 (SD=26.69). The main musculoskeletal disorders occurred in the neck region, lumbar spine and knees with 42.1% for each one. The quality of working life decreased in the presence of muscle-skeletal problems in the lumbar region with (-0.188, p≤.050), dorsal (-0.206, p≤.050), neck (-0.175, p≤.050) and knees (-0.220, p≤.010). It is necessary to improve the working conditions of nurses to reduce the presence of musculoskeletal problems and improve their quality of working life. Copyright © 2016 Elsevier España, S.L.U. All rights reserved.

Shielding features of quarry stone

International Nuclear Information System (INIS)

Hernandez V, C.; Contreras S, H.; Hernandez A, L.; Baltazar R, A.; Escareno J, E.; Mares E, C. A.; Vega C, H. R.

2010-10-01

Quarry stone lineal attenuation coefficient for gamma-rays has been obtained. In Zacatecas, quarry stone is widely utilized as a decorative item in buildings, however its shielding features against gamma-rays unknown. The aim of this work is to determine the shielding properties of quarry stone against γ-rays using Monte Carlo calculations where a detailed model of a good geometry experimental setup was carried out. In the calculations 10 pieces 10 X 10 cm 2 of different thickness were utilized to evaluate the photons transmission as the quarry stone thickness is increased. It was noticed that transmitted photons decay away as the shield thickness is increased, these results were fitted to an exponential function were the linear attenuation coefficient was estimated. Also, using XCOM code the linear attenuation coefficient from several keV up to 100 MeV was estimated. From the comparison between Monte Carlo results and XCOM calculations a good agreement was found. For 0.662 MeV γ-rays the attenuation coefficient of quarry stone, whose density is 2.413 g-cm -3 , is 0.1798 cm -1 , this mean a X 1/2 = 3.9 cm, X 1/4 = 7.7 cm, X 1/10 = 12.8 cm, and X 1/100 = 25.6 cm. Having the information of quarry stone performance as shielding give the chance to use this material to shield X and γ-ray facilities. (Author)

Spatial Variability of Heavy Metals in Soils and Sediments of “La Zacatecana” Lagoon, Mexico

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Sergio A. Covarrubias

2018-01-01

Full Text Available Anthropogenic activities have greatly increased heavy metal pollution worldwide. Due to inadequate waste management, mining is one of the chief causes. One particularly affected area in Mexico is the “La Zacatecana” Lagoon, in the municipality of Guadalupe, Zacatecas. From colonial times until the mid-nineteenth century, about 20 million tons of mine tailings were deposited at this site. Here, we catalogue the heavy metal content and their distribution in soils and sediments of La Zacatecana. The mobility of lead in soils was also assayed by sequential extraction. Concentrations of the different metals analysed were as follows: Pb > Cr > As > Ni > Hg > Cd. Site VIII accumulated the highest amount of Pb (3070 mg·kg−1 sevenfold more than the limit established by the Mexican standards for agricultural soils (i.e., 400 mg·kg−1. On the other hand, the contents of Cd, Cr, and Ni were within the levels accepted by the above normativity, set at 37, 280, and 1600 mg·kg−1, respectively. Concentrations of Hg and Pb were highest in the north-northwest zone of the lagoon and decreased towards the southeast. Except for Site VIII where 30% of the Pb was in an interchangeable form or bound to carbonates, most Pb in La Zacatecana soils was present in an unavailable form, associated with Fe-Mn oxides.

Iterative code for the reconstruction of the neutrons spectrum using the Bonner spheres

International Nuclear Information System (INIS)

Reyes H, A.; Ortiz R, J. M.; Vega C, H. R.

2012-10-01

The neutrons are the particles more difficult of detecting for their intrinsic nature. The absence of the neutrons charge makes that an interaction exists with the matter in a different way. The term radiation spectrometry can use to describe the measurement of the intensity of a radiation field with regard to the energy. The intensity distribution with relationship to the energy is commonly known as spectrum. A method to know the neutrons spectrum in the radiation fields to those that people are exposed is the use of the known system as spectrometry system of Bonner spheres, being the more used for the purposes of the radiological protection. The current interest in the electrons spectrometry has stimulated the development of several procedures to carry out the reconstruction of the spectra. During the last decades new codes have been developed such as BUNKIUT, Bums, Fruit, UMG, etc., however, these methods still present several inconveniences as the complexity in their use, the necessity of an expert user and a very near initial spectrum to the spectrum that is wanted to obtain. To solve the mentioned problems it was development the program NSDUAZ (Neutron Spectrometry and Dosimetry from Autonomous University of Zacatecas). The objective of the present work is to prove and to validate the code before mentioned making an analysis of likeness and differences and of advantages and disadvantages with relationship to the codes used at the present time. (Author)

Impacto laboral de la violencia contra las mujeres en el Municipio de San Ignacio de Velasco, Santa Cruz-Bolivia, año 2014

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Saucedo Tapanache, Marlies

2016-01-01

Bolivia es uno de los países cuyo índice de violencia contra las mujeres y la tasa de feminicidio son los más altos de Latinoamérica. Según datos de la "Fuerza especial de la lucha Contra la Violencia" dichas estadísticas han aumentado para el año 2014. Detrás de cada mujer violentada o asesinada no solo se esconde una historia de sufrimiento, también acarrea consecuencias para quienes las rodean, como el centro donde laboran, sean estos públicos o privados. Objetivo: Determinar el impacto la...

Efecto tóxico del DDT, clordano y agua de la presa Ignacio Ramírez (México), sobre Daphnia magna (Crustacea: Daphnidae)

OpenAIRE

Laura Martínez-Tabche; Martha Romero Solís; Eugenia López López; Marcela Galar Martínez

1999-01-01

Actualmente en México son empleados los plaguicidas diclorodifeniltricloroetano (DDT) y clordano (CLO) para combatir la malaria y termitas. De 1990 a 1996 un total de 27 ton de DDT y 508 de CLO, en forma de productos técnicos, fueron importados. El objetivo de este estudio fue establecer una metodología para determinar el impacto ambiental que pueden producir estos compuestos sobre un embalse. El efecto tóxico del DDT y CLO fue evaluado sobre la actividad de la o-demetilasa (OD) y del acetilc...

Continuous glucose monitoring in acute coronary syndrome.

Science.gov (United States)

Rodríguez-Quintanilla, Karina Alejandra; Lavalle-González, Fernando Javier; Mancillas-Adame, Leonardo Guadalupe; Zapata-Garrido, Alfonso Javier; Villarreal-Pérez, Jesús Zacarías; Tamez-Pérez, Héctor Eloy

2013-01-01

Diabetes mellitus is an independent risk factor for cardiovascular disease. To compare the efficacy of devices for continuous glucose monitoring and capillary glucose monitoring in hospitalized patients with acute coronary syndrome using the following parameters: time to achieve normoglycemia, period of time in normoglycemia, and episodes of hypoglycemia. We performed a pilot, non-randomized, unblinded clinical trial that included 16 patients with acute coronary artery syndrome, a capillary or venous blood glucose ≥ 140 mg/dl, and treatment with a continuous infusion of fast acting human insulin. These patients were randomized into 2 groups: a conventional group, in which capillary measurement and recording as well as insulin adjustment were made every 4h, and an intervention group, in which measurement and recording as well as insulin adjustment were made every hour with a subcutaneous continuous monitoring system. Student's t-test was applied for mean differences and the X(2) test for qualitative variables. We observed a statistically significant difference in the mean time for achieving normoglycemia, favoring the conventional group with a P = 0.02. Continuous monitoring systems are as useful as capillary monitoring for achieving normoglycemia. Copyright © 2012 Instituto Nacional de Cardiología Ignacio Chávez. Published by Masson Doyma México S.A. All rights reserved.

Colonialism and Sanctity in the Mariana Islands: the soldiers of Gideon (1676-1690

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Alexandre Coello de la Rosa

2010-04-01

Full Text Available In this article I analyze the conquest and conversion of the Marianas (1676- 1690 as a discursive reality that turned the islands in a violent theater wherein the chamorros were defined as ruthless warriors (warrior’s ethos, and the Jesuits, on the contrary, as victims of the betrayals and retaliations of their newly converted «children» (martyr’s ethos. The hagiographers elevated their Jesuit martyrs to the category of «moral heroes», turning their deeds into a strong element of cohesion and identity for the missionaries preaching in the archipelago. In addition, the superiors wrote informaciones or memorials in which they stood out the behaviour of the military «heroes» of the colonization. We refer to José de Quiroga y Losada, captain and major sergeant of the garrison, and to the «loyal Indian» don Ignacio de Hineti, Indian sergeant and a «good Christian», whose military expeditions were directed to deal with the «anomaly» of the chamorros’ resistance. After the Second Great War (1683-86, the Jesuits clearly adopted the political and religious leadership in the islands, becoming the founders of a real «missionary state» wherein their martyrs acted as moral referents of the subjugated territories.

Neuroimaging in eating disorders

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Jáuregui-Lobera I

2011-09-01

Full Text Available Ignacio Jáuregui-LoberaBehavioral Sciences Institute and Pablo de Olavide University, Seville, SpainAbstract: Neuroimaging techniques have been useful tools for accurate investigation of brain structure and function in eating disorders. Computed tomography, magnetic resonance imaging, positron emission tomography, single photon emission computed tomography, magnetic resonance spectroscopy, and voxel-based morphometry have been the most relevant technologies in this regard. The purpose of this review is to update the existing data on neuroimaging in eating disorders. The main brain changes seem to be reversible to some extent after adequate weight restoration. Brain changes in bulimia nervosa seem to be less pronounced than in anorexia nervosa and are mainly due to chronic dietary restrictions. Different subtypes of eating disorders might be correlated with specific brain functional changes. Moreover, anorectic patients who binge/purge may have different functional brain changes compared with those who do not binge/purge. Functional changes in the brain might have prognostic value, and different changes with respect to the binding potential of 5-HT1A, 5-HT2A, and D2/D3 receptors may be persistent after recovering from an eating disorder.Keywords: neuroimaging, brain changes, brain receptors, anorexia nervosa, bulimia nervosa, eating disorders

El doctor Moreno Pérez y el anopheles crucians

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Facultad de Medicina Revista

1943-03-01

Full Text Available En el año de 1933, con ocasión del conflicto del Amazonas, el doctor Ignacio Moreno·Pérez trabajó como médico de sanidad en la hoya del río Caquetá. Prosiguiendo sus estudios sobre paludismo y mosquitos transmisores a que dedicó gran parte de su meritoria vida, practicó una inspección entomológica de las cercanías de Florencia, capital de la comisaria del Caquetá, y encontró una raza en aguas salobres de Anopheles crucians. El hallazgo comunicado por él en el informe de 1934 de la comisión de paludismo del valle del Magdalena, (Estudios de Paludismo en el Valle del Magdalena, Departamento Nacional de Higiene, Sección de Sanidad Rural, Bogotá editorial de "Cromos", 1934, despertó mucho interés y fué objeto de controversias, porque conforme a los estudios de Howard, Dyar y Knab (1917, la localización del Anopheles crucians era casi hiperbórea, por encima del paralelo 25 en la América del Norte y solamente se había logrado ver además en Cuba y Jamaica.

Working With Embroideries and Counter-Maps: Engaging Memory and Imagination Within Decolonizing Frameworks

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Puleng Segalo

2015-08-01

Full Text Available As people around the world continue to have their voices, desires, and movements restricted, and their pasts and futures told on their behalf, we are interested in the critical project of decolonizing, which involves contesting dominant narratives and hegemonic representations. Ignacio Martín-Baró called these the “collective lies” told about people and politics. This essay reflects within and across two sites of injustice, located in Israel/Palestine and in South Africa, to excavate the circuits of structural violence, internalized colonization and possible reworking of those toward resistance that can be revealed within the stubborn particulars of place, history, and culture. The projects presented here are locally rooted, site-specific inquiries into contexts that bear the brunt of colonialism, dispossession, and occupation. Using visual research methodologies such as embroideries that produce counter-narratives and counter-maps that divulge the complexity of land-struggles, we search for fitting research practices that amplify unheard voices and excavate the social psychological soil that grows critical analysis and resistance. We discuss here the practices and dilemmas of doing decolonial research and highlight the need for research that excavates the specifics of a historical material context and produces evidence of previously silenced narratives.

Inventario del Archivo del conde de Bornos

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Pedro Antonio Porras Arboledas

1995-01-01

Full Text Available Mi primer contacto con esta Casa se remonta a algunos años atrás, cuando me Mamó la atención un documento muy interesante, publicado a comienzos del presente siglo por el ilustre erudito ubetense don Alfredo Cazaban, por el que los Reyes Católicos hacían merced a su secretario y jefe de la artillería real durante la Guerra contra Granada, Francisco Ramírez de Madrid, personaje madrileño de origen cántabro, de una heredad en término de Jaén —el cortijo de Bornos— por sus grandes esfuerzos en la conquista de las plazas, hasta el momento inexpugnables, de Cambil y Alhabar. Posteriormente, al realizar un estudio sobre el régimen señorial en el Reino de Jaén, intenté localizar los archivos de las diferentes casas nobiliarias asentadas en esta provincia, gracias a lo cual pude saber que la documentación del Condado de Bornos se hallaba en Madrid, bien en la Biblioteca Nacional o en el Archivo Histórico, ya que el actual Conde, el Excmo. Sr. Don Ignacio Ramírez de Haro, así me lo comunicó en marzo de 1983.

SECONDARY EFFECTS OF THE LOCALIZAED PROSTATE CANCER TREATMENTS ON THE QUALITY OF LIFE AND MARITAL

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MÓNICA MARÍA NOVOA GÓMEZ

2003-07-01

Full Text Available The general objective of this correlational-descriptive study was to analyze the relation betweenantineoplasic treatment’s secondary effects, quality of life and marital adjustment in men with localizedprostate cancer. The instruments were a structured interview about sociodemographic data, the QLQC30.v3 Inventory, to evaluate quality of life in oncology patients; the QLQ-PR25 Inventory, that is a complementary module of the previous one aimed to evaluate prostate cancer treatment’s secondaryeffects, and the Dyadic Adjustment Scale (DAS to evaluate marital adjustment. In order to select theparticipants of the study, contacts with the Javeriano Oncology Center at the San Ignacio UniversitaryHospital, the Santa Fe Foundation and the National Institute of Cancerology were made. Participantswere fifty (50 patients diagnosed with localized prostate cancer who received treatment s as radicalprostatectomy, and/or radiotherapy and/or hormonal therapy and/or brachitherapy, and with a timebetween six months and two years elapsed since the treatment. After the instruments application datawere analyzed with Kendall’s bivariate statistics. Significant correlations were found between treatment’ssecondary effects and quality of life, marital adjustment and quality of life, and treatment’s secondaryeffects and marital adjustment. Based on this results, hypothesis formulated for this study were accepted.

Editorial

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Ana Zazo Moratalla

2017-05-01

Full Text Available El número 35 de mayo de 2017 arranca una nueva etapa para URBANO. Tras su reformulación en 2014 por su anterior editor, Ignacio Bisbal, la revista del Departamento de Planificación y Diseño Urbano, que hasta entonces había desempeñado un papel más divulgativo en el contexto chileno, se decidió ajustar a los estándares científicos y poder aspirar a su indización internacional. En esa etapa, la revista se transformó para dar cabida a todas las necesidades formales, y mejoró su visibilidad y la trazabilidad de su proceso editorial a través del Open Journal System. Además, el trabajo conjunto del equipo de producción editorial de Urbano y del resto de editores de la Facultad de Arquitectura, Construcción y Diseño de la Universidad del Bío-Bío favoreció un crecimiento conjunto como equipo y un aprendizaje colectivo de los procesos de mejora de la calidad editorial. El resultado de este trabajo fue el acceso a los índices Redalyc, Latindex Catálogo, Avery Index, DOAJ, Dialnet, Redib, EBSCO y la red ARLA.

[Use of microRNAs in heart failure management].

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Arias Sosa, Luis Alejandro

Heart failure (HF) is a high impact disease that affects all human populations, demanding the development of new strategies and methods to manage this pathology. That's why microRNAs, small noncoding RNAs that regulate gene expression, appear as an important option in the diagnosis, prognosis and treatment of this disease. MiRNAs seems to have a future on HF handling, because can be isolated from body fluids such as blood, and changes in its levels can be associated with the presence, stage and specific disease features, which makes them an interesting option as biomarkers. Also, due to the important role of these molecules on regulation of gene expression and cell homeostasis, it has been explored its potential use as a therapeutic method to prevent or treat HF. That is why this review seeks to show the importance of biomedical research involving the use of miRNAs as a method to approach the HF, showing the impact of disease in the world, aspects of miRNAs biology, and their use as biomarkers and as important therapeutic targets. Copyright © 2017 Instituto Nacional de Cardiología Ignacio Chávez. Publicado por Masson Doyma México S.A. All rights reserved.

[Update on tegumentary leishmaniasis and carrion's disease vectors in Peru].

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Zorrilla, Victor; Vásquez, Gissella; Espada, Liz; Ramírez, Pablo

2017-01-01

Among approximately 190 species of Lutzomyia in Peru, only a small number have been identified as vectors of tegumentary leishmaniasis in Western and inter-Andean valleys. These include L. peruensis, L. verrucarum, L. tejadai, L. ayacuchensis, and L. pescei. In the Amazon region, L. yuilli yuilli, L. chagasi, L. davisi, and L. auraensis are naturally infected, among the subgenera Leishmania and Viannia. L. auraensis is newly reported as a potential vector of leishmaniasis in neotropical regions. Among the primary and most widely distributed vectors of human bartonellosis or Carrión's disease, L. verrucarum and L. peruensis are predominant in the Andean regions of northern, central, and southern Peru. Other potential vectors of Carrion's disease are L. serrana in the Monzon Valley, Huamalies, and Huanuco; L. pescei in Apurímac and Cusco; and L. robusta and L. maranonensis in Jaén, San Ignacio, and Utcubamba provinces, and the high forests of Peru. Because of the high prevalence of leishmaniasis and bartonellosis outside of known endemic areas in Peru, it is necessary to update data and distribution maps of these disease vectors. This may improve both prevention and control measures. Existing information about sandfly vectors in Peru is also provided in this article.

Hacia una nueva clasificación de los modelos pedagógicos: el pensamiento configuracional como paradigma científico y educativo del siglo xxi

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Alexander Ortiz Ocaña

2013-10-01

Full Text Available En este trabajo, resultado del proyecto MODEPED: Identificación, caracterización y elaboración del modelo pedagógico de las instituciones educativas públicas del Caribe Colombiano, se hace una nueva clasificación de los modelos pedagógicos en cuatro grande grupos: la pedagogía tradicional (Ignacio Loyola; la escuela nueva (Jhon Dewey, Decroly, Cousinet; la tecnología educativa (B. F. Skinner y la escuela del desarrollo integral (E. Pichón Riviere, P. Freyre, L. S. Vigotsky, A. N. Leontiev, S. L. Rubinstein, A. R. Luria, V. Davidov, I. A. Galperin, L. Zankov, N. Talízina, C. Rogers, Hamachek, A. Maslow, J. Bruner, D. Ausubel, R. Sternberg, J. Piaget, R. Feuerstein, J. de Zubiría, M. de Zubiría. Finalmente, se propone una alternativa emergente, tanto para la investigación científica como para la educación. Se propone el paradigma científico neuroconfiguracional para hacer ciencia humana y social, y un nuevo paradigma educativo para el siglo XXI: el Pensamiento Configuracional (Alexander Ortiz. En este sentido, se define la noción de pensamiento configuracional y se proponen sus bases, sus dimensiones, particularidades, indicadores, estadios, proceso y requerimientos.    

[Lung perfusion studies after percutaneous closure of patent ductus arteriosus using the Amplatzer Duct Occluder in children].

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Parra-Bravo, José Rafael; Apolonio-Martínez, Adriana; Estrada-Loza, María de Jesús; Beirana-Palencia, Luisa Gracia; Ramírez-Portillo, César Iván

2015-01-01

The closure of patent ductus arteriosus with multiple devices has been associated with a reduction in lung perfusion. We evaluated the pulmonary perfusion after percutaneous closure of patent ductus arteriosus with the Amplatzer Duct Occluder device using perfusion lung scan. Thirty patients underwent successful percutaneous patent ductus arteriosus occlusions using the Amplatzer Duct Occluder device were included in this study. Lung perfusion scans were preformed 6 months after the procedure. Peak flow velocities and protrusion of the device were analyzed by Doppler echocardiography. A left lung perfusionductus arteriosus and the minimum and maximum diameter/length of the ductus arteriosus ratio were statistically significant in patients with abnormalities of lung perfusion. It was observed protrusion the device in 6 patients with a higher maximum flow rate in the left pulmonary artery. The left lung perfusion may be compromised after percutaneous closure of patent ductus arteriosus with the Amplatzer Duct Occluder. The increased flow velocity in the origin of the left pulmonary artery can be a poor indicator of reduction in pulmonary perfusion and can occur in the absence of protrusion of the device. Copyright © 2014 Instituto Nacional de Cardiología Ignacio Chávez. Published by Masson Doyma México S.A. All rights reserved.

VIOLÊNCIA E PREVENÇÃO NA ESCOLA: AS POSSIBILIDADES DA PSICOLOGIA DA LIBERTAÇÃO

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Ana Paula Gomes Moreira

Full Text Available Resumo O artigo reflete sobre a violência no contexto da escola pública brasileira a partir da concepção construída por Ignacio Martín-Baró. Tomamos o conceito de situação-limite, construído pelo autor com o objetivo de investigar qual a compreensão que professoras da educação básica têm a respeito do que sejam situações-limite para o desenvolvimento de seus alunos. Para tanto, construímos um questionário, composto por perguntas norteadoras que foram respondidas por duas professoras de uma escola pública de ensino fundamental de uma cidade no interior do Estado de São Paulo. O método está fundamentado no Materialismo Histórico Dialético e busca evidenciar, por meio das respostas ao questionário, o confronto entre um conceito teoricamente sistematizado e os sentidos que ele pode assumir na prática. A promoção da consciência sobre esses sentidos, bem como o papel do psicólogo escolar na escola e na comunidade, são necessidades apontadas pelos resultados, cujas implicações devem sustentar pesquisas futuras.

Agave salmiana Plant Communities in Central Mexico as Affected by Commercial Use

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Martínez Salvador, Martin; Mata-González, Ricardo; Morales Nieto, Carlos; Valdez-Cepeda, Ricardo

2012-01-01

Agave salmiana is a native plant species harvested for the commercial production of mezcal ( Agave spirits) in the highlands of central Mexico. The objective of this study was to identify vegetation changes in natural communities where A. salmiana has been differentially harvested for commercial purposes. Three plant community categories were identified in the state of Zacatecas based on their history of A. salmiana utilization: short (less than 10 years of use), moderate (about 25 years), and long (60 or more years). Species cover, composition, and density were evaluated in field surveys by use category. A gradient of vegetation structure of the communities parallels the duration of A. salmiana use. A. salmiana density was greatest (3,125 plants ha-1) in the short-use areas and less (892 plants ha-1) in the moderate-use areas, associated with markedly greater density of shrubs (200%) and Opuntia spp. (50%) in moderate-use areas. The main shrubs were Larrea tridentata, Mimosa biuncifera, Jatropha dioica and Buddleia scordioides while the main Opuntia species were Opuntia leucotricha and Opuntia robusta. A. salmiana density was least (652 plants ha-1) in the long-use areas where shrubs were less abundant but Opuntia spp. density was 25% higher than in moderate-use areas. We suggest that shrubs may increase with moderate use creating an intermediate successional stage that facilitates the establishment of Opuntia spp. Long-term Agave use is generating new plant communities dominated by Opuntia spp. (nopaleras) as a replacement of the original communities dominated by A. salmiana (magueyeras).

Pérdida de seguimiento y factores asociados en pacientes inscritos en el programa de HIV/sida del Hospital Universitario San Ignacio, Colombia, 2012-2013

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José Roberto Támara-Ramírez

2016-06-01

Conclusiones. Es necesario que los programas de HIV/sida establezcan sistemas de seguimiento y rastreo, con el fin de establecer estrategias para mejorar la retención de los pacientes y, por ende, su calidad de vida a largo plazo.

Cardiovascular risk factors in a Mexican middle-class urban population. The Lindavista Study. Baseline data.

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Meaney, Alejandra; Ceballos-Reyes, Guillermo; Gutiérrez-Salmean, Gabriela; Samaniego-Méndez, Virginia; Vela-Huerta, Agustín; Alcocer, Luis; Zárate-Chavarría, Elisa; Mendoza-Castelán, Emma; Olivares-Corichi, Ivonne; García-Sánchez, Rubén; Martínez-Marroquín, Yolanda; Ramírez-Sánchez, Israel; Meaney, Eduardo

2013-01-01

The aim of this communication is to describe the cardiovascular risk factors affecting a Mexican urban middle-class population. A convenience sample of 2602 middle class urban subjects composed the cohort of the Lindavista Study, a prospective study aimed to determine if conventional cardiovascular risks factors have the same prognosis impact as in other populations. For the baseline data, several measurements were done: obesity indexes, smoking, blood pressure, fasting serum glucose, total cholesterol, HDL-c, LDL-c and triglycerides. This paper presents the basal values of this population, which represents a sample of the Mexican growing urban middle-class. The mean age in the sample was 50 years; 59% were females. Around 50% of the entire group were overweighed, while around 24% were obese. 32% smoked; 32% were hypertensive with a 20% rate of controlled pressure. 6% had diabetes, and 14% had impaired fasting glucose; 66% had total cholesterol ≥ 200 mg/dL; 62% showed HDL-c levels150 mg/dL, and 34% levels of LDL-c ≥ 160 mg/dL. Half of the population studied had the metabolic syndrome. These data show a population with a high-risk profile, secondary to the agglomeration of several cardiovascular risk factors. Copyright © 2012 Instituto Nacional de Cardiología Ignacio Chávez. Published by Masson Doyma México S.A. All rights reserved.

Modified Ponseti method of treatment for correction of neglected clubfoot in older children and adolescents--a preliminary report.

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Bashi, Ramin Haj Zargar; Baghdadi, Taghi; Shirazi, Mehdi Ramezan; Abdi, Reza; Aslani, Hossein

2016-03-01

Congenital talipes equinovarus may be the most common congenital orthopedic condition requiring treatment. Nonoperative treatment including different methods is generally accepted as the first step in the deformity correction. Ignacio Ponseti introduced his nonsurgical approach to the treatment of clubfoot in the early 1940s. The method is reportedly successful in treating clubfoot in patients up to 9 years of age. However, whether age at the beginning of treatment affects the rate of effective correction and relapse is unknown. We have applied the Ponseti method successfully with some modifications for 11 patients with a mean age of 11.2 years (range, 6 to 19 years) with neglected and untreated clubbed feet. The mean follow-up was 15 months (12 to 36 months). Correction was achieved with a mean of nine casts (six to 13). Clinically, 17 out of 18 feet (94.4%) were considered to achieve a good result with no need for further surgery. The application of this method of treatment is very simple and also cheap in developing countries with limited financial and social resources for health service. To the best of the authors' knowledge, such a modified method as a correction method for clubfoot in older children and adolescents has not been applied previously for neglected clubfeet in older children in the literature.

Mitochondrial and nuclear genetic variation across calving lagoons in Eastern North Pacific gray whales (Eschrichtius robustus).

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Alter, S Elizabeth; Ramirez, Sergio Flores; Nigenda, Sergio; Ramirez, Jorge Urbán; Bracho, Lorenzo Rojas; Palumbi, Stephen R

2009-01-01

Accurate knowledge of population structure in cetaceans is critical for preserving and managing breeding habitat, particularly when habitat is not uniformly protected. Most eastern gray whales return to their major breeding range each winter along the Pacific coast of Baja California, Mexico, concentrating in 3 major calving lagoons, but it is unknown whether genetic differences exist between lagoons. Previous photo-identification studies and genetic studies suggest that gray whales may return to their natal lagoons to breed, potentially resulting in the buildup of genetic differences. However, an earlier genetic study used only one genetic marker and did not include samples from Bahia Magdalena, a major calving lagoon not currently designated as a wildlife refuge. To expand on this previous study, we collected genetic data from the mitochondrial control region (442 bp) and 9 microsatellite markers from 112 individuals across all 3 major calving lagoons. Our data suggest that migration rates between calving lagoons are high but that a small but significant departure from panmixia exists between Bahia Magdalena and Laguna San Ignacio (Fisher's Exact test, P 10% per generation). In addition, microsatellite data showed evidence of a severe population bottleneck. Eastern gray whales are still recovering from the impacts of whaling on their breeding grounds, and these populations should be protected and monitored for future genetic changes.

Maxillaria jostii Dodson (Orchidaceae un nuevo registro para la Flora del Perú

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Eric F. Rodríguez Rodríguez

2013-12-01

Full Text Available Se presenta a Maxillaria jostii Dodson (Orchidaceae como una nueva adición a la Flora del Perú procedente de los substratos de roca arenisca de la Cordillera subandina de Huarango (provincia San Ignacio, departamento Cajamarca, una prolongación sureña de la Cordillera del Cóndor rica en especies. Maxillaria jostii ha sido considerada como una especie endémica para Ecuador (Zamora-Chinchipe, Morona-Santiago; sin embargo, con el presente estudio se amplía su distribución geográfica hacia el Perú. Esta nueva contribución al conocimiento de la flora del país es el resultado del trabajo de campo y de herbario, gracias al Proyecto Binacional «Inventario Botánico de la Región de la Cordillera del Cóndor, Ecuador y Perú, 2005-2007», desarrollado entre las instituciones: MO, HUT, LOJA y QCNE. La contrastación específica se realizó con las especies documentadas en el «Catálogo de las Angiospermas y Gimnospermas del Perú» (Brako & Zarucchi 1993, «Diez años de adiciones a la flora del Perú: 1993-2003» (Ulloa Ulloa et al. 2004 y «Nuevas Adiciones de Angiospermas a la Flora del Perú» (Rodríguez et al. 2006b.

[Safety of repeat median sternotomy in the palliative treatment of patients with a univentricular heart].

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Díliz-Nava, Héctor; Meléndez-Sagaón, Isis; Tamaríz-Cruz, Orlando; García-Benítez, Luis; Araujo-Martínez, Aric; Palacios-Macedo, Alexis

To establish the morbidity and mortality of patients with univentricular hearts who underwent a repeat median sternotomy at the Instituto Nacional de Pediatría. A retrospective review was performed on the clinical charts of all patients who underwent a repeat median sternotomy from 2001 to 2016. Sixty-five patients underwent 76 surgeries by repeat median sternotomy. Fifty-nine patients had a first repeat median sternotomy, with a mean age of 36 months (range: 4-176 months) and a mean weight of 12.2 kg (range: 3.2-21.5 kg). Forty patients had a Glenn procedure, and 19 patients had a Fontan procedure. There were 17 patients with a second repeat median sternotomy, with a mean age of 89 months (range 48-156 months), and a mean weight of 22.7 kg (14.4-41 kg). A Fontan procedure was performed on all these 17 patients. A section of the right coronary artery with electrocardiographic changes and a right atrium tear that caused hypotension occurred during first repeat sternotomy. An aortic tear occurred during a second repeat sternotomy with massive bleeding and subsequent death. This represents 3.9% of re-entry injuries. It is concluded that repeat median sternotomy is a safe procedure. Copyright © 2016 Instituto Nacional de Cardiología Ignacio Chávez. Publicado por Masson Doyma México S.A. All rights reserved.

Heart failure complicating myocardial infarction. A report of the Peruvian Registry of ST-elevation myocardial infarction (PERSTEMI).

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Chacón-Diaz, Manuel; Araoz-Tarco, Ofelia; Alarco-León, Walter; Aguirre-Zurita, Oscar; Rosales-Vidal, Maritza; Rebaza-Miyasato, Patricia

2018-05-01

The aim of this study is to determine the incidence, associated factors, and 30-day mortality of patients with heart failure (HF) after ST elevation myocardial infarction (STEMI) in Peru. Observational, cohort, multicentre study was conducted at the national level on patients enrolled in the Peruvian registry of STEMI, excluding patients with a history of HF. A comparison was made with the epidemiological characteristics, treatment, and 30 day-outcome of patients with (Group 1) and without (Group 2) heart failure after infarction. Of the 388 patients studied, 48.7% had symptoms of HF, or a left ventricular ejection fraction 75 years, anterior wall infarction, and the absence of electrocardiographic signs of reperfusion were the factors related to a higher incidence of HF. The hospital mortality in Group 1 was 20.6%, and the independent factors related to higher mortality were age>75 years, and the absence of electrocardiographic signs of reperfusion. Heart failure complicates almost 50% of patients with STEMI, and is associated with higher hospital and 30-day mortality. Age greater than 75 years and the absence of negative T waves in the post-reperfusion ECG are independent factors for a higher incidence of HF and 30-day mortality. Copyright © 2018 Instituto Nacional de Cardiología Ignacio Chávez. Publicado por Masson Doyma México S.A. All rights reserved.

[Surgical results and monitoring of postoperative atrial myxomas].

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Tarelo-Saucedo, Juan M; Peñaloza-Guadarrama, Mario; Villela-Caleti, Jorge; García-Cruz, Adriana; Arizmendi-Monroy, Dulce K; Reynada-Torres, Jose L; Martinez-Ramirez, Leonel

2016-01-01

To analyze the casuistics of left atrial myxoma with emphasis on results and follow-up. We reviewed the clinical records of patients operated in the Hospital Cardiac Myxomas South Central High Specialty (HCSAE) of PEMEX in the last 7 years, with an emphasis on results and follow-up. The analysis showed 10 patients, of whom 60% were female and 40% male, with ages from 12 to 76 years, with a mean age of 50 years. In the clinical characteristics of patients predominated dyspnea in 90%, followed by fatigue (80%) and chest pain (60%). The incidence was 90% for the left atrium and 10% for the right atrium, had tumors less than 3cm to up to over 10cm (average of 6 to 7cm). The pathology report was myxoma in the 100% of cases, the morbidity and early mortality was 0%, with a mean hospital stay of 6 days, and a patient of 12 years of age recurred and underwent surgery five months later. The 5-year survival was 100%. The incidence of myxomas is well known for rare presentation, the experience in this national medical center is one patient for every 350 operations, one case per year with no mortality and excellent survival. Copyright © 2015 Instituto Nacional de Cardiología Ignacio Chávez. Published by Masson Doyma México S.A. All rights reserved.

Nuclear Medicine week in Colombia

International Nuclear Information System (INIS)

Padhy, A.K.

2003-01-01

During the week of 6-12 October 2003 the IAEA organized a Research Coordination Meeting on 'Relationship between lower Respiratory Tract Infection, Gastroesophageal reflux and bronchial Asthma in children' at Hospital San Ignacio in Bogota. Besides there were four workshops in Bogota; workshops on Bone infection and Bone scan in Pediatric ortopaedics at Hospital Militar and Fundacion CardioInfantil, a workshop for Nuclear Medicine Technologists and a workshop on Sentinel Lymph Node mapping and Surgical Gamma Probe Application at Institute of Oncology. A nuclear cardiology workshop was organized in Medellin, and finally crowning them all was the 9th Congress of the Colombian Association of Nuclear Medicine at Cali from 10-12 October, 2003; probably the largest and best Colombian nuclear medicine congress every held in the country. A workshop was also organized in Cali for nuclear medicine technologists in conjunction with the Annual Convention. It was a mix of IAEA's Technical Cooperation and Regular Budget activities along with the activities of Colombian Association of Nuclear Medicine, bringing in absolute synergy to galvanize the entire nuclear medicine community of the country. The week saw nuclear medicine scientists from more than 20 IAEA Member States converging on Colombia to spread the message of nuclear medicine, share knowledge and to foster International understanding and friendship among the nuclear medicine people of the world

Mexican registry of pulmonary hypertension: REMEHIP.

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Sandoval Zarate, Julio; Jerjes-Sanchez, Carlos; Ramirez-Rivera, Alicia; Zamudio, Tomas Pulido; Gutierrez-Fajardo, Pedro; Elizalde Gonzalez, Jose; Leon, Mario Seoane Garcia De; Gamez, Miguel Beltran; Abril, Francisco Moreno Hoyos; Michel, Rodolfo Parra; Aguilar, Humberto Garcia

REMEHIP is a prospective, multicentre registry on pulmonary hypertension. The main objective will be to identify the clinical profile, medical care, therapeutic trends and outcomes in adult and pediatric Mexican patients with well-characterized pulmonary hypertension. REMEHIP a multicenter registry began in 2015 with a planned recruitment time of 12 months and a 4-year follow-up. The study population will comprise a longitudinal cohort study, collecting data on patients with prevalent and incident pulmonary hypertension. Will be included patients of age >2 years and diagnosis of pulmonary hypertension by right heart catheterization within Group 1 and Group 4 of the World Health Organization classification. The structure, data collection and data analysis will be based on quality current recommendations for registries. The protocol has been approved by institutional ethics committees in all participant centers. All patients will sign an informed consent form. Currently in Mexico, there is a need of observational registries that include patients with treatment in the everyday clinical practice so the data could be validated and additional information could be obtained versus the one from the clinical trials. In this way, REMEHIP emerges as a link among randomized clinical trials developed by experts and previous Mexican experience. Copyright © 2016 Instituto Nacional de Cardiología Ignacio Chávez. Publicado por Masson Doyma México S.A. All rights reserved.

[Spontaneous speech prosody and discourse analysis in schizophrenia and Fronto Temporal Dementia (FTD) patients].

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Martínez, Angela; Felizzola Donado, Carlos Alberto; Matallana Eslava, Diana Lucía

2015-01-01

Patients with schizophrenia and Frontotemporal Dementia (FTD) in their linguistic variants share some language characteristics such as the lexical access difficulties, disordered speech with disruptions, many pauses, interruptions and reformulations. For the schizophrenia patients it reflects a difficulty of affect expression, while for the FTD patients it reflects a linguistic issue. This study, through an analysis of a series of cases assessed Clinic both in memory and on the Mental Health Unit of HUSI-PUJ (Hospital Universitario San Ignacio), with additional language assessment (analysis speech and acoustic analysis), present distinctive features of the DFT in its linguistic variants and schizophrenia that will guide the specialist in finding early markers of a differential diagnosis. In patients with FTD language variants, in 100% of cases there is a difficulty understanding linguistic structure of complex type; and important speech fluency problems. In patients with schizophrenia, there are significant alterations in the expression of the suprasegmental elements of speech, as well as disruptions in discourse. We present how depth language assessment allows to reassess some of the rules for the speech and prosody analysis of patients with dementia and schizophrenia; we suggest how elements of speech are useful in guiding the diagnosis and correlate functional compromise in everyday psychiatrist's practice. Copyright © 2014 Asociación Colombiana de Psiquiatría. Publicado por Elsevier España. All rights reserved.

Household Air Pollution Exposure and Influence of Lifestyle on Respiratory Health and Lung Function in Belizean Adults and Children: A Field Study

Directory of Open Access Journals (Sweden)

Stephanie P. Kurti

2016-06-01

Full Text Available Household air pollution (HAP contributes to the global burden of disease. Our primary purpose was to determine whether HAP exposure was associated with reduced lung function and respiratory and non-respiratory symptoms in Belizean adults and children. Our secondary purpose was to investigate whether lifestyle (physical activity (PA and fruit and vegetable consumption (FV is associated with reported symptoms. Belizean adults (n = 67, 19 Male and children (n = 23, 6 Male from San Ignacio Belize and surrounding areas participated in this cross-sectional study. Data collection took place at free walk-in clinics. Investigators performed initial screenings and administered questionnaires on (1 sources of HAP exposure; (2 reported respiratory and non-respiratory symptoms and (3 validated lifestyle questionnaires. Participants then performed pulmonary function tests (PFTs and exhaled breath carbon monoxide (CO. There were no significant associations between HAP exposure and pulmonary function in adults. Increased exhaled CO was associated with a significantly lower forced expiratory volume in 1-s divided by forced vital capacity (FEV1/FVC in children. Exposed adults experienced headaches, burning eyes, wheezing and phlegm production more frequently than unexposed adults. Adults who met PA guidelines were less likely to experience tightness and pressure in the chest compared to those not meeting guidelines. In conclusion, adults exposed to HAP experienced greater respiratory and non-respiratory symptoms, which may be attenuated by lifestyle modifications.

[Arrhythmogenic right ventricular cardiomyopathy. Case report and a brief literature review].

Science.gov (United States)

Izurieta, Carlos; Curotto-Grasiosi, Jorge; Rocchinotti, Mónica; Torres, María J; Moranchel, Manuel; Cañas, Sebastián; Cardús, Marta E; Alasia, Diego; Cordero, Diego J; Angel, Adriana

2013-01-01

A 51-year-old man was admitted to this hospital because of palpitations and a feeling of dizziness for a period of 2h. The electrocardiogram revealed a regular wide-QRS complex tachycardia at a rate of 250 beats per minute, with superior axis and left bundle branch block morphology without hemodynamically decompensation, the patient was cardioverted to sinus rhythm after the administration of a loading and maintenance dose of amiodarone. The elechtrophysiological study showed the ventricular origin of the arrhythmia. In order to diagnose the etiology of the ventricular tachycardia we performed a coronary arteriography that showed normal epicardial vessels, thus ruling out coronary disease. Doppler echocardiography revealed systolic and diastolic functions of both left and right ventricles within normal parameters, and normal diameters as well. A cardiac magnetic resonance with late enhancement was done, showing structural abnormalities of the right ventricle wall with moderate impairment of the ejection fraction, and a mild dysfunction of the left ventricle. The diagnosis of arrhythmogenic right ventricular cardiomyopathy was performed as 2 major Task Force criteria were met. We implanted an automatic cardioverter defibrillator as a prophylactic measure. The patient was discharged without complications. Copyright © 2012 Instituto Nacional de Cardiología Ignacio Chávez. Published by Masson Doyma México S.A. All rights reserved.

About the specialized myocardial conducting tissue.

Science.gov (United States)

de Micheli Serra, Alfredo; Iturralde Torres, Pedro; Aranda Fraustro, Alberto

2013-01-01

The chronological succession of discoveries on the location and structure of the atrio-ventricular conducting system are described. The starting point of this system is located in the sinus atrial node, identified by the English scientists A. Keith and M. W. Flack in 1907. The atrioventricular conducting system was pointed out by the Swiss physician Wilhelm His Jr. in 1893. The atrioventricular node (AV) was first identified by the Japanese pathologist Sumao Tawara and his German professor Ludwig Aschoff in 1906. Likewise the structure and routes of the three internodal bundles are described. These bundles include: Bachmann's bundle (1916) connecting the right with the left atrium and the AV node; the middle Wenckebach's bundle (1910) and the posterior or Thörel's bundle (1910), extending from the region of the sinus atrial node towards the posterior margin of the AV node. Lastly, the ventricular left and right conduction systems are detailed. These include the main trunk and their peripheral subdivisions with respective networks. Regarding the controversial existence of the left middle subdivision, it can exist in animal and human hearts. Nevertheless, an intermediate left septal network of specialized fibers seems to act as a functional equivalent of this subdivision. Copyright © 2012 Instituto Nacional de Cardiología Ignacio Chávez. Published by Masson Doyma México S.A. All rights reserved.

Frecuencia de micosis en pacientes inmunosuprimidos de un hospital regional de la Ciudad de México

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Hernández-Hernández Francisca

2003-01-01

Full Text Available OBJETIVO: Aislar e identificar hongos en diferentes especímenes de pacientes inmunocomprometidos, atendidos en un hospital de la Ciudad de México, y determinar su asociación con micosis. MATERIAL Y MÉTODOS: Se realizó un estudio de tipo observacional transversal en pacientes del Hospital Regional General Ignacio Zaragoza, de junio de 1999 a mayo de 2000. De 108 pacientes se procesaron 268 especímenes para estudio micológico que incluyó examen directo, frotis, cultivos y microcultivos en medios específicos además de pruebas bioquímicas. La mayoría de pacientes tenía diagnóstico clínico de tuberculosis pulmonar y de síndrome de inmunodeficiencia adquirida. RESULTADOS: Se obtuvieron 183 aislamientos de levaduras y 66 de hongos filamentosos. Se diagnosticaron 45 micosis que en su mayoría correspondieron a candidosis pulmonar (32 casos. Las especies de Candida más frecuentes asociadas a patología fueron Candida albicans y C parapsilosis. Se obtuvieron cinco aislamientos de Cryptococcus neoformans variedad neoformans, uno de C albidus, tres de Histoplasma capsulatum y uno de Geotrichum candidum, asociados a infección micótica. CONCLUSIONES: El 41.6% de los pacientes estudiados presentaron una micosis asociada principalmente a síndrome de inmunodeficiencia adquirida y a tuberculosis pulmonar.

La Junta para Ampliación de Estudios republicana frentepopulista, represaliada por el franquismo y olvidada por la Transición y la democracia

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Cristina Calandre Hoenigsfeld

2009-12-01

Full Text Available La Junta para Ampliación de Estudios, creada en 1907 , fue sin duda la gran institución científica que introdujo a España en la modernidad. Tuvo dos presidentes,el primero fue Ramón y Cajal, que la presidió hasta su muerte en 1934 y el segundo Ignacio Bolívar. Normalmente los estudios sobre la JAE no incluyen el periodo que va desde el comienzo de la Guerra Civil española en Julio de 1936 hasta su final en Marzo de 1939. Durante todo ese periodo, con el gobierno republicano del Frente Popular, la JAE siguió funcionando, tanto a nivel organizativo, como con actividades científicas y pedagógicas. Según se iba desarrollando la contienda, iban desplazándose. Se creo una Comisión Delegada en Valencia, presidida por el Dr Márquez, que luego en Noviembre de 1937 se trasladó, con el gobierno republicano a Barcelona, incorporando a personalidades de la intelectualidad catalana. Durante estos años, fueron los ministros de Instrucción Pública y Sanidad, de los que dependía la JAE, Jesús Hernández del PC y Segundo Blanco de la CNT. La JAE supo ir sorteando toda clase de dificultades, adaptándose a cada situación, por encima de partidismos y nacionalismos, pues tenían muy claro que el enemigo a combatir era el fascismo. Es este artículo se pretende sacar del olvido la historia de la JAE de ese periodo “maldito”, en consonancia con las investigaciones dedicadas a la memoria histórica, poniendo de relieve la actuación valiente y desconocida de la JAE._________________ABSTRACT:The Furthering of Studies Board , created in 1907, was , without a doubt , the great scientific institution that introduced Spain to modernism.This institution had two predidents.The first was Ramón y Cajal and the second was Ignacio Bolivar.Normally, studies of the Furthering of Studies Board do not include the period from the beginning of the Spanish Civil War in July 1936 to the end , in March 1939.During this period, with the Republican Government of

Reseñas

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HC Reseñas

2010-02-01

Full Text Available VÁZQUEZ DE PRADA, Valentín; OLÁBARRI, Ignacio y CASPISTEGUI, Francisco Javier (eds.. V Conversaciones Internacionales de Historia: Para comprender el cambio social. Enfoques teóricos y perspectivas historiográficas. Pamplona, Eunsa, 1997. OLÂBAKRI, Ignacio y CASPISTEGUI, Francisco Javier (dirs. La "nueva" historia cultural: la influencia delpostestructuralismo y el auge de la interdisciplinariedad. Madrid, Ed. Complutense, 1996. W.AA. L'histoire sociale en débat. Paris, Université Paris X-Nanterre, 1995. MARTIN, Jean-Clément. Révolution et Contre-révolution en France, 1789-1989. Les rouages de l'Histoire. Rennes, Presses Universitaires, 1996. PETIT, Jacques-Guy y MAREC, Yannick (Eds.· Le social dans la ville en France et en Europe. Paris, L'Atelier, 1996. LUEBBERT, Gregory M. Liberalismo, fascismo o socialdemocracia: Clases sociales y orígenes políticos de los regímenes de la Europa de entreguerras. Zaragoza, Prensas Universitarias de Zaragoza, 1997. CUENCA TORIBIO, José Manuel. La Francia actual: Política y políticos. Córdoba, Universidad, 1996. GUEREÑA, Jean-Louis y VIÑAO FRAGO, Antonio. Estadística escolar, proceso de escolarización y sistema educativo nacional en España (1750-1850. Barcelona, EUB, 1996. BORRAS LLOP, José María (dir.· Historia de la infancia en la España contemporánea. 1834-1936. Madrid, Ministerio de Trabajo-Fundación Germán Sánchez Ruipérez, 1996. FOX, Inman. La invención de España. Nacionalismo liberal e identidad nacional. Madrid, Ediciones Cátedra, 1997. MARTÍN, Luis P. La masonería en Castilla y León en el siglo XIX. Salamanca, Diputación Provincial, 1996. DE LA GRANJA, José Luis. El nacionalismo vasco: un siglo de historia. Madrid, Ed. Tecnos, 1995. MAGNIEN, Brigitte (Ed.. Hacia una literatura del pueblo: del folletín a la novela (El ejemplo de Timoteo Orbe. Barcelona, Anthropos, 1995. MARTÍNEZ MARTÍN, María Ascensión. Gipuzkoa en la vanguardia del reformismo social

Environmental equivalent dose due to radiation dispersed by the patient body in treatments with tomotherapy; Dosis equivalente ambiental debida a la radiacion dispersada por el cuerpo del paciente en tratamientos con tomoterapia

Energy Technology Data Exchange (ETDEWEB)

Esparza H, A.; Luna S, K. C.; Vega C, H. R. [Universidad Autonoma de Zacatecas, Unidad Academica de Estudios Nucleares, Cipres No. 10, Fracc. La Penuela, 98068 Zacatecas, Zac. (Mexico); Reyes R, E., E-mail: ange.es.he55@gmail.com [Universidad de Guanajuato, Division de Ciencias e Ingenieria, 37150 Leon, Guanajuato (Mexico)

2017-09-15

One of the important parameters of the design and evaluation of the bunker of a linear accelerator for radiotherapy is the dose at the point to be protected behind the barriers of the treatment room. In the case of primary barriers this dose is due to direct radiation and in the case of secondary barriers is the dose due to radiation that leaks from the head and the dose due to radiation scattered by the body of the patient. In Zacatecas the bunker in the oncology ward was designed for a linear accelerator of 18 MV, but an accelerator of the latest technology was installed, which is a linear accelerator of 6 MV for tomotherapy that has a better control of the applied dose. In order to determine the dose due to the scattered radiation that reaches the internal surfaces of the barriers of the room, thermoluminescent dosimeters (TLDs) of type 100 were used, which were placed on three occasions, in 9 points inside the bunker for periods of 7 days. During these periods, patients were routinely treated and treated for different tumors using different procedures. At each measurement point, 4 dosimeters were placed. The readings of the TLDs were used to calculate the environmental equivalent dose that was normalized to the applied dose. The highest doses were found on the surface of the accelerator and did not show symmetry, in the primary barriers the same doses were found and in the labyrinth the dose due to scattered radiation is influenced by the Compton dispersion that the photons scattered on the wall of the labyrinth background. (Author)

Determination of {sup 40}K in water samples; Determinacion del {sup 40}K en muestras de agua

Energy Technology Data Exchange (ETDEWEB)

Delgado, C. E.; Miranda C, L.; Cuevas J, A. K.; Vega C, H. R., E-mail: rmfranccesco0223@hotmail.com [Universidad Autonoma de Zacatecas, Unidad Academica de Estudios Nucleares, Cipres No. 10, Fracc. La Penuela, 98068 Zacatecas (Mexico)

2014-10-15

The natural water used for human consumption comes from different sources, which may contain suspended solids in varying proportions. In groundwater, the source of suspended solids is related to the dissolution of mineral strata by the waters and leaching of rocks. Also, the radioactivity could concentrate on the bodies of slow-moving water that eventually could present a risk to ecosystems, as well as for the consumer. The water usually contains several natural radionuclides as: tritium, radon, radio, uranium isotopes, etc. The objective of this study was to evaluate the concentration of {sup 40}K in water from different areas of Zacatecas state (Mexico). Four water samples were taken in triplicate from different areas; the {sup 40}K concentration was measured with a spectrum metric system of gamma radiation with NaI (Tl) scintillation detector of 7.62 cm. In the measuring process a standard was prepared using water and KCl analytic grade where the {sup 40}K concentration is 6.25 mol/Lt adding 250 mg/ml of potassium. Also the system was calibrated in energy using 3 point sources of {sup 137}Cs, diameter {sup 22}Na and 7.62 cm of height, using containers Marinelli and {sup 60}Co. In the obtained spectra was observed that the photon of 1.432 MeV that emits the {sup 40}K when decaying is the most important. The highest concentration was of 123 ± 5.2 Bq/lt and the lowest was of 9 ± 0.4 Bq/lt. Under the standards of drinking water, an amount of {sup 40}K deposits an effective dose which contributes to annual dose received by people. (Author)

Niveles de plomo en sangre y factores de riesgo por envenenamiento de plomo en niños mexicanos

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Eduardo González Valdez

2008-01-01

Full Text Available El plomo (Pb es un contaminante ambiental que causa efectos adversos a la salud humana. La exposición humana al plomo se determina monitoreando su concentración en sangre, tomando en cuenta la influencia de varios factores, tales como edad, sexo, dieta y contaminación del aire. En este trabajo se analizó por duplicado la concentración de plomo en sangre de 80 niños que corresponde al 32% del total de menores de 15 años en la población del área minera de Vetagrande Zacatecas, México. Se usó voltamperometría de redisolución anódica siguiendo los criterios de la Norma Oficial Mexicana (NOM, la cual define seis categorías de contaminación. De los valores, 45% de los menores presentaron <10 µg/dL, 16,25%, 10-14 µg/dL, 33,75% 15-24 µg/dL y 5%, 25-44 µg/dL, que corresponden a las categorías de la II a la IV respectivamente. Los resultados en materia de salud revisten gran importancia ya que más del 50% de los niños tiene niveles de plomo en sangre que ameritan intervención por parte de los servicios de salud. La causa probable de la presencia de plomo en sangre se debe a que las casas habitación de esa población se encuentran asentadas en terrenos enriquecidos con plomo, y a través de una interacción el plomo se transporta hacia las personas.

Determination of 40K in water samples

International Nuclear Information System (INIS)

Delgado, C. E.; Miranda C, L.; Cuevas J, A. K.; Vega C, H. R.

2014-10-01

The natural water used for human consumption comes from different sources, which may contain suspended solids in varying proportions. In groundwater, the source of suspended solids is related to the dissolution of mineral strata by the waters and leaching of rocks. Also, the radioactivity could concentrate on the bodies of slow-moving water that eventually could present a risk to ecosystems, as well as for the consumer. The water usually contains several natural radionuclides as: tritium, radon, radio, uranium isotopes, etc. The objective of this study was to evaluate the concentration of 40 K in water from different areas of Zacatecas state (Mexico). Four water samples were taken in triplicate from different areas; the 40 K concentration was measured with a spectrum metric system of gamma radiation with NaI (Tl) scintillation detector of 7.62 cm. In the measuring process a standard was prepared using water and KCl analytic grade where the 40 K concentration is 6.25 mol/Lt adding 250 mg/ml of potassium. Also the system was calibrated in energy using 3 point sources of 137 Cs, diameter 22 Na and 7.62 cm of height, using containers Marinelli and 60 Co. In the obtained spectra was observed that the photon of 1.432 MeV that emits the 40 K when decaying is the most important. The highest concentration was of 123 ± 5.2 Bq/lt and the lowest was of 9 ± 0.4 Bq/lt. Under the standards of drinking water, an amount of 40 K deposits an effective dose which contributes to annual dose received by people. (Author)

Relación entre actividad física y obesidad en escolares Relation between the physical activity and obesity in schoolchildren

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Perla María Trejo Ortiz

2012-03-01

Full Text Available Introducción: la presencia de obesidad entre la población infantil, es un problema que va en aumento en países de todo el mundo. Su desarrollo obedece a factores de tipo genético y a aquellos relacionados con el estilo de vida, entre los que se destaca la actividad física. Los niños durante la etapa escolar, realizan poco ejercicio, ya que destinan la mayor parte de su tiempo, a ver la televisión o a videojuegos, lo que los hace altamente vulnerables a desarrollar obesidad. Objetivo: identificar la asociación de actividad física reportada por las madres y la obesidad en escolares. Métodos: estudio descriptivo, correlacional y comparativo. La muestra se conformó por 138 madres y sus hijos, escolares de una primaria pública de Guadalupe, Zacatecas. A las madres se les aplicó el cuestionario de actividad física en escolares, denominado en inglés Physical activity questionnaire; a los niños se les tomó peso y talla. Resultados: la prevalencia combinada de sobrepeso y obesidad fue de 29,7 %, mayor en el sexo masculino, y a partir de los 8 años. En escala de 1 a 5 puntos, los escolares tuvieron una media de actividad física de 2,5, dedicaban en promedio tres horas diarias frente al televisor. Las actividades más frecuentes fueron correr y saltar la cuerda. No se encontraron diferencias significativas en la actividad física realizada según el sexo y edad. No existió asociación entre actividad física y peso corporal en los escolares, pero sí tendencia a la significancia para que los niños con obesidad, pasen más horas frente a la televisión, que aquellos con peso normal. Conclusiones: es necesario utilizar otros métodos más exactos para valorar la actividad física en los escolares, los cuestionarios aplicados a las madres, revelan que no existe asociación entre las variables utilizadas.Introduction: the presence of obesity among the children is an increasing problem in countries at world level. It development is due to

Carryover effects associated with winter location affect fitness, social status, and population dynamics in a long-distance migrant.

Science.gov (United States)

Sedinger, James S; Schamber, Jason L; Ward, David H; Nicolai, Christopher A; Conant, Bruce

2011-11-01

We used observations of individually marked female black brant geese (Branta bernicla nigricans; brant) at three wintering lagoons on the Pacific coast of Baja California-Laguna San Ignacio (LSI), Laguna Ojo de Liebre (LOL), and Bahía San Quintín (BSQ)-and the Tutakoke River breeding colony in Alaska to assess hypotheses about carryover effects on breeding and distribution of individuals among wintering areas. We estimated transition probabilities from wintering locations to breeding and nonbreeding by using multistratum robust-design capture-mark-recapture models. We also examined the effect of breeding on migration to wintering areas to assess the hypothesis that individuals in family groups occupied higher-quality wintering locations. We used 4,538 unique female brant in our analysis of the relationship between winter location and breeding probability. All competitive models of breeding probability contained additive effects of wintering location and the 1997-1998 El Niño-Southern Oscillation (ENSO) event on probability of breeding. Probability of breeding in non-ENSO years was 0.98 ± 0.02, 0.68 ± 0.04, and 0.91 ± 0.11 for females wintering at BSQ, LOL, and LSI, respectively. After the 1997-1998 ENSO event, breeding probability was between 2% (BSQ) and 38% (LOL) lower than in other years. Individuals that bred had the highest probability of migrating the next fall to the wintering area producing the highest probability of breeding.

Reperfusion therapy of myocardial infarction in Mexico: A challenge for modern cardiology.

Science.gov (United States)

Martínez-Sánchez, Carlos; Arias-Mendoza, Alexandra; González-Pacheco, Héctor; Araiza-Garaygordobil, Diego; Marroquín-Donday, Luis Alfonso; Padilla-Ibarra, Jorge; Sierra-Fernández, Carlos; Altamirano-Castillo, Alfredo; Álvarez-Sangabriel, Amada; Azar-Manzur, Francisco Javier; Briseño-de la Cruz, José Luis; Mendoza-García, Salvador; Piña-Reyna, Yigal; Martínez-Ríos, Marco Antonio

Mexico has been positioned as the country with the highest mortality attributed to myocardial infarction among the members of the Organization for Economic Cooperation and Development. This rate responds to multiple factors, including a low rate of reperfusion therapy and the absence of a coordinated system of care. Primary angioplasty is the reperfusion method recommended by the guidelines, but requires multiple conditions that are not reached at all times. Early pharmacological reperfusion of the culprit coronary artery and early coronary angiography (pharmacoinvasive strategy) can be the solution to the logistical problem that primary angioplasty rises. Several studies have demonstrated pharmacoinvasive strategy as effective and safe as primary angioplasty ST-elevation myocardial infarction, which is postulated as the choice to follow in communities where access to PPCI is limited. The Mexico City Government together with the National Institute of Cardiology have developed a pharmaco-invasive reperfusion treatment program to ensure effective and timely reperfusion in STEMI. The model comprises a network of care at all three levels of health, including a system for early pharmacological reperfusion in primary care centers, a digital telemedicine system, an inter-hospital transport network to ensure primary angioplasty or early percutaneous coronary intervention after fibrinolysis and a training program with certification of the health care personal. This program intends to reduce morbidity and mortality associated with myocardial infarction. Copyright © 2016 Instituto Nacional de Cardiología Ignacio Chávez. Publicado por Masson Doyma México S.A. All rights reserved.

Iron deficiency and cognitive functions

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Jáuregui-Lobera I

2014-11-01

Full Text Available Ignacio Jáuregui-Lobera Department of Nutrition and Bromatology, Pablo de Olavide University, Seville, Spain Abstract: Micronutrient deficiencies, especially those related to iodine and iron, are linked to different cognitive impairments, as well as to potential long-term behavioral changes. Among the cognitive impairments caused by iron deficiency, those referring to attention span, intelligence, and sensory perception functions are mainly cited, as well as those associated with emotions and behavior, often directly related to the presence of iron deficiency anemia. In addition, iron deficiency without anemia may cause cognitive disturbances. At present, the prevalence of iron deficiency and iron deficiency anemia is 2%–6% among European children. Given the importance of iron deficiency relative to proper cognitive development and the alterations that can persist through adulthood as a result of this deficiency, the objective of this study was to review the current state of knowledge about this health problem. The relevance of iron deficiency and iron deficiency anemia, the distinction between the cognitive consequences of iron deficiency and those affecting specifically cognitive development, and the debate about the utility of iron supplements are the most relevant and controversial topics. Despite there being methodological differences among studies, there is some evidence that iron supplementation improves cognitive functions. Nevertheless, this must be confirmed by means of adequate follow-up studies among different groups. Keywords: iron deficiency, anemia, cognitive functions, supplementation

Carryover effects associated with winter location affect fitness, social status, and population dynamics in a long-distance migrant

Science.gov (United States)

Sedinger, James S.; Schamber, Jason L.; Ward, David H.; Nicolai, Christopher A.; Conant, Bruce

2011-01-01

We used observations of individually marked female black brant geese (Branta bernicla nigricans; brant) at three wintering lagoons on the Pacific coast of Baja California—Laguna San Ignacio (LSI), Laguna Ojo de Liebre (LOL), and Bahía San Quintín (BSQ)—and the Tutakoke River breeding colony in Alaska to assess hypotheses about carryover effects on breeding and distribution of individuals among wintering areas. We estimated transition probabilities from wintering locations to breeding and nonbreeding by using multistratum robust-design capture-mark-recapture models. We also examined the effect of breeding on migration to wintering areas to assess the hypothesis that individuals in family groups occupied higher-quality wintering locations. We used 4,538 unique female brant in our analysis of the relationship between winter location and breeding probability. All competitive models of breeding probability contained additive effects of wintering location and the 1997–1998 El Niño–Southern Oscillation (ENSO) event on probability of breeding. Probability of breeding in non-ENSO years was 0.98 ± 0.02, 0.68 ± 0.04, and 0.91 ± 0.11 for females wintering at BSQ, LOL, and LSI, respectively. After the 1997–1998 ENSO event, breeding probability was between 2% (BSQ) and 38% (LOL) lower than in other years. Individuals that bred had the highest probability of migrating the next fall to the wintering area producing the highest probability of breeding.

[Pulmonary hypertension associated with congenital heart disease and Eisenmenger syndrome].

Science.gov (United States)

Calderón-Colmenero, Juan; Sandoval Zárate, Julio; Beltrán Gámez, Miguel

2015-01-01

Pulmonary arterial hypertension is a common complication of congenital heart disease (CHD). Congenital cardiopathies are the most frequent congenital malformations. The prevalence in our country remains unknown, based on birthrate, it is calculated that 12,000 to 16,000 infants in our country have some cardiac malformation. In patients with an uncorrected left-to-right shunt, increased pulmonary pressure leads to vascular remodeling and endothelial dysfunction secondary to an imbalance in vasoactive mediators which promotes vasoconstriction, inflammation, thrombosis, cell proliferation, impaired apotosis and fibrosis. The progressive rise in pulmonary vascular resistance and increased pressures in the right heart provocated reversal of the shunt may arise with the development of Eisenmenger' syndrome the most advanced form de Pulmonary arterial hypertension associated with congenital heart disease. The prevalence of Pulmonary arterial hypertension associated with CHD has fallen in developed countries in recent years that is not yet achieved in developing countries therefore diagnosed late as lack of hospital infrastructure and human resources for the care of patients with CHD. With the development of targeted medical treatments for pulmonary arterial hypertension, the concept of a combined medical and interventional/surgical approach for patients with Pulmonary arterial hypertension associated with CHD is a reality. We need to know the pathophysiological factors involved as well as a careful evaluation to determine the best therapeutic strategy. Copyright © 2014 Instituto Nacional de Cardiología Ignacio Chávez. Published by Masson Doyma México S.A. All rights reserved.

Homenaje Póstumo: Jorge Cavelier Gaviria (1929-2012

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Efraim Otero Ruiz

2013-09-01

Full Text Available "Ya voces más autorizadas y elocuentes que la mía han hablado y hablarán de una fi gura que, como pocos, ha grabado un hito en la historia de esta Academia. Yo sólo quiero recordar afectuosamente una amistad que nos vinculó por más de un sexenio de nuestras vidas y comenzó por los claustros “esos sí antiguos- de la Javeriana de la calle 10, al lado de la iglesia de San Ignacio. Amistad sincera pero no cercana, cordial pero no íntima. Sus verdaderos amigos, bartolinos y no gimnasianos eran en la Facultad de Medicina Alberto Mejía, Eduardo Borda y Eduardo Rodríguez, verdadera guardia pretoriana alrededor de Jorge y de la cual, sobreviven activos y fuertes los dos últimos. A ellos y otros que veníamos “de Chapinero” “nuestro punto de concentración y bastión javeriano era el Centro de Practicantes de la 39 con 13- nos les fuimos uniendo con motivo de las conferencias en mimeógrafo. Allí debíamos tomar el tranvía amarillo que nos dejaba en la carrera 7ª. con calle 13, de donde subíamos anhelantes a la casa del Profesor, casi en la esquina de la carrera 4ª. donde procedíamos a descifrar nuestros cuadernos de apuntes y a preparar los esténciles."

Annotated checklist of Solanum L. (Solanaceae for Peru

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Tiina Särkinen

2015-04-01

Full Text Available The genus Solanum is among the most species-rich genera both of the Peruvian flora and of the tropical Andes in general. The present revised checklist treats 276 species of Solanum L., of which 253 are native, while 23 are introduced and/or cultivated. A total of 74 Solanum species (29% of native species are endemic to Peru. Additional 58 species occur only in small number of populations outside Peru, and these species are here labelled as near-endemics to highlight the role Peru playes in their future protection. Species diversity is observed to peak between 2500 – 3000 m elevation, but endemic species diversity is highest between 3000 – 3500 m elevation. Cajamarca has the highest number of endemic (29 spp. and total species (130 spp., even when considering the effect of area. Centers of endemic species diversity are observed in provinces of Cajamarca (Cajamarca, Huaraz and Carhuaz (Ancash, and Canta and Huarochirí (Lima. Secondary centres of endemism with high concentrations of both endemics and near-endemics are found in San Ignacio and Cutervo (Cajamarca, Santiago de Chuco (La Libertad, Oxapampa (Pasco, and Cusco (Cusco. Current diversity patterns are highly correlated with collection densities, and further collecting is needed across all areas, especially from Arequipa, Ayacucho, Puno, Ancash, Huánuco, Amazonas and Cajamarca, where high levels of species diversity and endemism are indicated but only a few collections of many species are known.

[Association between IGF system and PAPP-A in coronary atherosclerosis].

Science.gov (United States)

Fierro-Macías, Alfonso Eduardo; Floriano-Sánchez, Esaú; Mena-Burciaga, Victoria Michelle; Gutiérrez-Leonard, Hugo; Lara-Padilla, Eleazar; Abarca-Rojano, Edgar; Fierro-Almanzán, Alfonso Edmundo

2016-01-01

Atherosclerosis is a condition that involves multiple pathophysiological mechanisms and whose knowledge has not been fully elucidated. Often, scientific advances on the atherogenic pathophysiology generate that molecules not previously considered in the scene of this disease, were attributed actions on the onset or progression of it. A representative example is the study of a new mechanism involved in the atherogenic process, consisting of the association between the insulin-like growth factor (IGF) system and pregnancy-associated plasma protein-A (PAPP-A). Insulin-like growth factor system is a family of peptides that include 3 peptide hormones, 4 transmembrane receptors and 6 binding proteins. Insulin-like growth factor-1 (IGF-1) is the main ligand of the IGF system involved in coronary atherosclerosis. IGF-1 exerts its effects via activation of the IGF-1R receptor on vascular smooth muscle cells or macrophages. In vascular smooth muscle cells promotes migration and prevents apoptosis which increases plaque stability while in macrophages reduces reverse cholesterol transport leading to the formation of foam cells. Regulation of IGF-1 endothelial bioavailability is carried out by IGFBP proteases, mainly by PAPP-A. In this review, we address the mechanisms between IGF system and PAPP-A in atherosclerosis with emphasis on molecular effects on vascular smooth muscle cells and macrophages. Copyright © 2016 Instituto Nacional de Cardiología Ignacio Chávez. Published by Masson Doyma México S.A. All rights reserved.

Relationship between the scannographic appearance and the clinical course in sharp pancreatitis

International Nuclear Information System (INIS)

Moron M, Fanny Emilia; Bermudez M, Sonia; Mantilla M, Maria Isabel; Manzano Ana Cristina

1997-01-01

Relationship between computed tomography appearance and clinical course in acute pancreatitis. A review of the CT's of patients admitted to Hospital Universitario de San Ignacio with acute pancreatitis. On the first stage of the study, an inter-observer variability for CT interpretation was analysed. The second part is a correlation between findings on early CT examinations (less than 48 hrs) and clinical course, using the Balthazar staging system, the CT severity index and the clinical Ranson staging and apache index, and comparing clinical course defined as probability of death, days of hospitalisation on the critical care unit (CCU) and prolonged stay at the CCU. The CT severity index and the Ranson staging demonstrated a greater correlation with the clinical course of pancreatitis. There was not an adequate correlation between clinical course and the apache II staging system. Even though the Balthazar staging system and the severity index correlate well with each other, the latter has a better association with the outcome of patients and severity of the disease. The percentage of necrosis on CT cannot be used as a sole parameter for severity, because it is not present in a significant number of patients and it does not relate well, on its own, with the clinical severity scales nor with hospitalisation times. The determination of the number of positive CT findings has a direct correlation with the other radiological staging systems and with the Ranson scale, and could be easily interpreted and standardized

Risk factors for hospital-acquired bacteremia due to carbapenem-resistant Pseudomonas aeruginosa in a Colombian hospital.

Science.gov (United States)

Valderrama, Sandra Liliana; González, Pedro Felipe; Caro, María Alejandra; Ardila, Natalia; Ariza, Beatriz; Gil, Fabián; Álvarez, Carlos

2016-02-23

Bacteremia due to Pseudomonas aeruginosa resistant to carbapenems is a public health problem due to the limitations it places on therapeutic options, as well as the increased time patients must spend in hospital, costs and the risk of mortality.  To evaluate the risk factors for presentation of bacteremia due to carbapenem-resistant P. aeruginosa acquired in the Hospital Universitario San Ignacio between January 2008 and June 2014.  This was a case control study in which the case patients presented bacteremia due to P. aeruginosa resistant to carbapenems and the control group included patients with P. aeruginosa susceptible to this group of antibiotics. Variables such as the previous use of meropenem and ertapenem, immunosuppression and neoplasia were measured. Mortality and duration of hospital were also described.  In all, 168 patients were evaluated, of which 42 were cases and 126 controls. Using a multivariate model, the risk factors related to bacteremia due to carbapenem-resistant P. aeruginosa acquired in hospital were the following: use of parenteral nutrition (OR=8.28; 95% CI: 2.56-26.79; p=0); use of meropenem (OR=1.15; 95% CI: 1.03-1.28; p=0.01); and use of ciprofloxacin (OR=81.99; 95% CI: 1.14-5884; p=0.043).  In order to prevent the emergence of carbapenem-resistant P. aeruginosa, antimicrobial control programs should be strengthened by promoting the prudent administration of carbapenems and quinolones. The correct use of parenteral nutrition should also be monitored.

[Analysis of the safety culture in a Cardiology Unit managed by processes].

Science.gov (United States)

Raso-Raso, Rafael; Uris-Selles, Joaquín; Nolasco-Bonmatí, Andreu; Grau-Jornet, Guillermo; Revert-Gandia, Rosa; Jiménez-Carreño, Rebeca; Sánchez-Soriano, Ruth M; Chamorro-Fernández, Carlos I; Marco-Francés, Elvira; Albero-Martínez, José V

2017-04-04

Safety culture is one of the requirements for preventing the occurrence of adverse effects. However, this has not been studied in the field of cardiology. The aim of this study is to evaluate the safety culture in a cardiology unit that has implemented and certified an integrated quality and risk management system for patient safety. A cross-sectional observational study was conducted in 2 consecutive years, with all staff completing the Spanish version of the questionnaire, "Hospital Survey on Patient Safety Culture" of the "Agency for Healthcare Research and Quality", with 42 items grouped into 12 dimensions. The percentage of positive responses in each dimension in 2014 and 2015 were compared, as well as national data and United States data, following the established rules. The overall assessment out of a possible 5, was 4.5 in 2014 and 4.7 in 2015. Seven dimensions were identified as strengths. The worst rated were: staffing, management support and teamwork between units. The comparison showed superiority in all dimensions compared to national data, and in 8 of them compared to American data. The safety culture in a Cardiology Unit with an integrated quality and risk management patient safety system is high, and higher than nationally in all its dimensions and in most of them compared to the United States. Copyright © 2017 Instituto Nacional de Cardiología Ignacio Chávez. Publicado por Masson Doyma México S.A. All rights reserved.

[Electrical storm in patients with prophylactic defibrillator implantation].

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Rodríguez-Mañero, Moisés; González-Cambeiro, Cristina; Moreno-Arribas, Jose; Expósito-García, Víctor; Sánchez-Gómez, Juan Miguel; González-Torres, Luis; Arce-León, Álvaro; Arguedas-Jiménez, Hugo; Gaztañaga, Larraitz; Salvador-Montañés, Oscar; Iglesias-Bravo, Jose Antonio; Huerta, Ana Andrés La; Fernández-Armenta, Juan; Arias, Miguel Ángel; Martínez-Sande, Luis

2016-01-01

Little is known about the prevalence of electrical storm, baseline characteristics and mortality implications of patients with implantable cardioverter defibrillator in primary prevention versus those patients without electrical storm. We sought to assess the prevalence, baseline risk profile and survival significance of electrical storm in patients with implantable defibrillator for primary prevention. Retrospective multicenter study performed in 15 Spanish hospitals. Consecutives patients referred for desfibrillator implantation, with or without left ventricular lead (at least those performed in 2010 and 2011), were included. Over all 1,174 patients, 34 (2,9%) presented an electrical storm, mainly due to ventricular tachycardia (82.4%). There were no significant baseline differences between groups, with similar punctuation in the mortality risk scores (SHOCKED, MADIT and FADES). A clear trigger was identified in 47% of the events. During the study period (38±21 months), long-term total mortality (58.8% versus 14.4%, pstorm patients. Rate of inappropriate desfibrillator intervention was also higher (14.7 versus 8.6%, pstorm was 2.9%. There were no baseline differences in the cardiovascular risk profile versus those without electrical storm. However, all cause mortality and cardiovascular mortality was increased in these patients versus control desfibrillator patients without electrical storm, as was the rate of inappropriate desfibrillator intervention. Copyright © 2015 Instituto Nacional de Cardiología Ignacio Chávez. Published by Masson Doyma México S.A. All rights reserved.

[An overview of the history of electro-vectorcardiography. Tribute to the memory of the unforgettable Dr. Gustavo A. Medrano Castro].

Science.gov (United States)

de Micheli Serra, Alfredo; Iturralde Torres, Pedro

2014-01-01

The history of the investigations about of the so-called irritability of animal tissues showed by English physician Francis Glisson in the 17th century, is summarized. During the 18th century, reliable studies on the bioelectric properties of these tissues began, due to the Swiss scientist Albrecht von Haller and continuated by the Italian naturalist Felice Fontana. In the second half of this century, multiple controversies of the partisans of the animal electricity against the partisans of the contact electricity took place. The Danish scientist Oersted in 1820 proved the close relation of magnetism to electricity, which led to construction of electrometers. These instruments allowed to register and measure record of the electric current. On this way, at middle 21st century, the true animal electricity was identified as the injury current. Later it was possible to record the electric current, risen in the myocardium, out the thorax first by means of the Lippmann' capillary electrometer and later thanks to the Einthoven's string galvanometer at the beginning of the 20th century. So the modern electro-vectorcardiography took off, due to English Thomas Lewis, the North-American Frank N. Wilson and the Mexican Demetrio Sodi Pallares. The last one allowed to rationalize the electro-vectorcardiographic exploration on experimental bases. Copyright © 2013 Instituto Nacional de Cardiología Ignacio Chávez. Published by Masson Doyma México S.A. All rights reserved.

[On the evolution of scientific thought].

Science.gov (United States)

de Micheli, Alfredo; Iturralde Torres, Pedro

2015-01-01

The Nominalists of the XIV century, precursors of modern science, thought that science's object was not the general, vague and indeterminate but the particular, which is real and can be known directly. About the middle of the XVII Century the bases of the modern science became established thanks to a revolution fomented essentially by Galileo, Bacon and Descartes. During the XVIII Century, parallel to the development of the great current of English Empiricism, a movement of scientific renewal also arose in continental Europe following the discipline of the Dutch Physicians and of Boerhaave. In the XIX Century, Claude Bernard dominated the scientific medicine but his rigorous determinism impeded him from taking into account the immense and unforeseeable field of the random. Nowadays, we approach natural science and medicine, from particular groups of facts; that is, from the responses of Nature to specific questions, but not from the general laws. Furthermore, in recent epistemology, the concept that experimental data are not pure facts, but rather, facts interpreted within a hermeneutical context has been established. Finally a general tendency to retrieve philosophical questions concerning the understanding of essence and existence can frequently be seen in scientific inquiry. In the light of the evolution of medical thought, it is possible to establish the position of scientific medicine within the movement of ideas dominating in our time. Copyright © 2014 Instituto Nacional de Cardiología Ignacio Chávez. Published by Masson Doyma México S.A. All rights reserved.

Morbilidad y maltrato infantil en niños entre 7- 14 años en consulta de Psicología Morbility and infant abuse: 14 years in a Psycology office

Directory of Open Access Journals (Sweden)

Ivonne Jiménez Macías

2006-04-01

Full Text Available Se realizó un estudio descriptivo transversal a la población infanto juvenil de 7 - 14 años atendidos en el servicio de Psicología perteneciente al Policlínico Comunitario Docente de Camagüey “Ignacio Agramonte y Loynaz” , durante el año 2004, con el objetivo de conocer el comportamiento de la morbilidad en consulta, determinar presencia de maltrato infantil en los niños estudiados y relacionar sus formas con la morbilidad encontrada, precisar los antecedentes de bajo peso al nacer y prematuridad en los niños con maltrato, así como la presencia e intensidad de la depresión en los mismos. El universo estuvo constituido por 90 niños, correspondiente a la fuente de datos dada por las historias clínicas individuales elaboradas en consulta, a los cuales se le aplicaron un grupo de cuestionarios tomados de bibliografía consultada y que pasaron a ser el registro primario de la investigación. Se procesaron los datos por métodos de estadística descriptiva y los resultados se expresaron en textos, tablas y gráficas. Se encontró que las afecciones más frecuentes en consulta de Psicología fueron: las situaciones familiares inadecuadas (SFI, los trastornos transitorios situacionales (TTS en SFI, la neurosis infantil y el síndrome ansioso en SFI presentes en un 52.2 % (47 pacientes. En el 85.6 % de los niños estudiados existía maltrato, predominando en el sexo masculino y en el grupo de edad de 7 -10 años, las formas de maltrato predominante fueron: el emocional, la negligencia en los cuidados y el físico. Un 85.7 % de los niños maltratados (66 niños presentó depresión, fundamentalmente a nivel ligero (47 %. No resultó representativa la presencia de bajo peso al nacer y prematuridad en los niños maltratadosA descriptive traversal study was carried out to the juvenile- infant population from 7 to 14 years old assisted in the psychology Service of the “Ignacio Agramonte y Loynaz” Policlinic in Camaguey during the year

Seasonal diet composition of Fundulus lima (Cyprinodontiformes: Fundulidae in two oasis systems of Baja California Sur, Mexico

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Dinora Acosta Zamorano

2011-12-01

Full Text Available Fundulus lima inhabits river drainage systems and is threatened after the introduction of cichlids in the area. To support conservation programs, the spatial and temporal variation of the diet composition of this endangered killifish, was determined in two oasis systems of Baja California Sur, Mexico (San Ignacio and La Purisima river drainages, during rainy and dry seasons. F. lima was captured by using passive and active capture techniques. A total of 192 stomach contents of F. lima was analyzed. The contribution of each prey item in the diet composition was quantified by means of the indices of occurrence frequency (% OF, numerical (%N and volume (%V percentages. The relative importance of each prey item was determined according to the percentage of the Relative Importance Index (%RII. The similarity of the diet was calculated between hydrological basins (populations combined by basin, seasons (rainy versus dry months, sexes and size classes, by using Schoener’s resource overlap index. We used two ecological indices to determine the type of feeding strategy exhibited by the fish: (1 niche breadth of Levins and (2 proportional similarity of Feisinger. Sand was the most abundant item in the stomach content of killifishes from both drainages (39% and 47%, respectively. Diet composition was similar for both drainages (74% as well as among their respective size classes; however, it was different between sexes. In both drainages, F. lima predated mainly on diatom algae, dipterous and trichopteran larvae, and fish scales during the dry season; while it preferred dipterous larvae, filamentous algae and ostracods in the rainy season. A feeding strategy of opportunist type was exhibited by F. lima during the rainy season, changing to specialist type during the dry season. This information will be the basis for future investigations related to the conservation of this endangered species and its habitat. Rev. Biol. Trop. 59 (4: 1669-1678. Epub 2011

The Photo-3 model: A Python-based model for C3, C4, and CAM photosynthesis coupled with environmental conditions

Science.gov (United States)

Hartzell, S. R.; Bartlett, M. S., Jr.; Porporato, A. M.

2017-12-01

The ability to depict all three photosynthetic types (C3, C4, and CAM) has important implications for the study of both natural and agroecosystems. Currently no model exists which covers all types of photosynthesis in a consistent way and which can be fully integrated with environmental conditions. This is partially because, despite the fact that Crassulacean acid metabolism (CAM) photosynthesis is prevalent in many plants in arid and semi-arid ecosystems, where it may comprise nearly 50% of all plant biomass, CAM modelling remains understudied. The Photo-3 model takes advantage of recent advances in mechanistic modeling of CAM photosynthesis to provide a direct comparison of CAM functioning with C3 and C4 functioning under a wide range of soil and atmospheric conditions. The model is based on a core Farquhar photosynthetic model with additional functions to represent the spatial and temporal separations of carbon uptake and assimilation in the case of C4 and CAM photosynthesis. We have parameterized the model for one representative species of each photosynthetic type: Opuntia ficus-indica (CAM), Sorghum bicolor (C4), and Triticum aestivum (C3). Results agree well with experimental data on carbon assimilation and water use for the three species. Model runs using climate data from Temple, TX; Sicily, Italy; Zacatecas, Mexico; Pernambuco, Brazil and Adias Ababa, Ethiopia illustrate the high water use efficiency of CAM plants and its cumulative effects on long-term productivity in water-limited environments. The Photo-3 model, which is written in Python, will be made publicly available on GitHub and its outputs may be coupled to existing models of plant growth and phenology. The model may be used to evaluate potential productivity and water use for C3, C4, and CAM plants, and to devise optimal strategies for cropping systems and irrigation in water-limited environments.

Asociación del sobrepeso y caries dental en niños de 3 a 6 años

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Carmen de la Luz-Ayala-Escandón

2013-01-01

Full Text Available Antecedentes: En los últimos años de nuestro país, los cambios en los patrones de alimentación han incrementado los casos de obesidad y sobrepeso en los niños. Objetivo: determinar si la prevalencia de caries dental se asocia al sobrepeso y obesidad en preescolares de la Zona Metropolitana Zacatecas-Guadalupe. Materiales y Métodos: Se realizó estudio observacional de cohorte retrospectivo, en dos grupos de estudio: niños con peso normal (n=108 y niños con sobrepeso u obesidad (n=54. Para determinar el sobrepeso o peso normal, se utilizó un estadiómetro y una báscula digital, los datos se analizaron de acuerdo a los puntos de corte de IMC para cada edad según género con tablas de percentiles del Center for Diseases Control (CDC. Para el registro de la enfermedad caries dental se realizó examen clínico de las superfi\tdentales bajo luz artifi espejo dental plano, sonda de la OMS y barreras de protección, utilizando los criterios del Sistema Internacional de Evaluación y Detección de Caries Dental (ICDAS II. Los datos recopilados se procesaron en el paquete estadístico SPSS 17 para la obtención de tablas y fi\tPara determinar la asociación entre las variables de estudio se utilizó las pruebas X2 y riesgo relativo (RR. Resultados: En los niños con peso normal la prevalencia de caries fue de 77.8% mientras que en los niños con sobrepeso fue de 69.1%. Conclusiones: Este estudio no encontró evidencia de asociación entre caries dental y sobrepeso.

FACTORES QUE CONDICIONAN EL CONSUMO DE DROGAS EN ESTUDIANTES DEL 4TO Y 5TO DE SECUNDARIA DEL COLEGIO IGNACIO ALVAREZ THOMAS DE CERRO COLORADO AREQUIPA, 2009

OpenAIRE

VILCA CEBALLOS, NURY VANESSA

2014-01-01

DROGAS USO, ABUSO Y DEPENDENCIA DE LAS DROGAS CLASIFICACIÓN DE LAS DROGAS TIPOS DE DROGAS DROGAS ILEGALES ENFERMEDADES SOCIALES DROGADICCIÓN TABAQUISMO FACTORES QUE CONDICIONAN EL CONSUMO DE DROGAS FACTORES SOCIALES FACTORES PSICOLÓGICOS

Telling Tales of War to Teens: Ignacio Martínez de Pisón's Una guerra africana and Morocco as "Open Wound" in the Spanish National Imaginary

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Silvia Bermúdez

2006-01-01

Full Text Available Exactly ten years after its traumatic defeat in the Spanish-American War of 1898, Spain appeared to find some compensation for the loss of its last colonies by undertaking the invasion of Morocco in 1908. The enterprise proved difficult when the forces of Abd-el-Krim defeated the Spanish army in the summer of 1921. This terrible loss was metaphorized as an "open wound" and entered the collective imagination by becoming a theme in novels such as José Díaz Fernández's El blocao (1928, Ramón Sender's Imán (1930, and Arturo Barea's series La forja de un rebelde (1941-1944. Known as the "Disaster of Annual," the defeat appeared to be almost forgotten until a series of narratives in the late twentieth and early twenty-first centuries obsessively returned to this particular moment of Spanish history. I focus on how one such narrative, Martínez de Pisón's Una guerra africana (2000, revisits this war as adolescent literature ("novelas juveniles" and within the literary genre of the "novels of the War in Africa," and by so doing, contributes to the articulation of a Spanish collective identity with the historical memory of the feared Moroccan Other.

[Prehospital thrombolysis: A national perspective. Pharmaco-invasive strategy for early reperfusion of STEMI in Mexico].

Science.gov (United States)

Arriaga-Nava, Roberto; Valencia-Sánchez, Jesús-Salvador; Rosas-Peralta, Martin; Garrido-Garduño, Martin; Calderón-Abbo, Moisés

2015-01-01

To review the existing evidence on the role of prehospital thrombolysis in patients with ST-segment elevation acute myocardial infarction (STEMI) as part of a strategy of cutting edge to reduce the time of coronary reperfusion and as a consequence improves both the survival and function. We used the technique of exploration-reduction-evaluation-analysis and synthesis of related studies, with an overview of current recommendations, data from controlled clinical trials and from the national and international registries about the different strategies for STEMI reperfusion. In total, we examined 186 references on prehospital thrombolysis, 130 references in times door-treatment, 139 references in STEMI management and national and international registries as well as 135 references on rescue and primary percutaneous coronary intervention for STEMI. Finally the 48 references that were more relevant and informative were retained. The «time» factor is crucial in the success of early reperfusion in STEMI especially if thrombolysis is applied correctly during the prehospital time. The primary percutaneous coronary intervention is contingent upon its feasibility before 120 min from the onset of symptoms. In our midst to internationally, thrombolysis continues to be a strategy with great impact on their expectations of life and function of patients. Telecommunication systems should be incorporate in real time to the priority needs of catastrophic diseases such as STEMI where life is depending on time. Copyright © 2014 Instituto Nacional de Cardiología Ignacio Chávez. Published by Masson Doyma México S.A. All rights reserved.

Zorrilla, El poeta y el Semanario Pintoresco Español

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Ricardo de la Fuente Ballesteros

2008-07-01

Full Text Available Zorrilla no pudo escapar al éxito del artículo de costumbres en su época, de manera que, en medio del triunfo de este género, Ignacio Boix recaba su colaboración –un trabajo sobre la figura del “poeta”– para su obra Los españoles pintados por sí mismos. Como señala María de los Ángeles Ayala, el escritor vallisoletano va a seguir la modelización del género, dirigiendo sus palabras al lector, manifestando su satisfacción por el encargo que se le ha hecho, etc., todo ello al uso de las fisiologías francesas, al igual que harán sus colegas participantes en esta colección (Blasco, 231-239. El objeto de este estudio no será una retrospectiva sobre lo que supone la aportación de Zorrilla al género, bien escasa por cierto, sino más bien una lectura de este artículo, dentro del contexto del pensamiento literario de los años cuarenta, a la vez que a la luz de la representación que del poeta hace en otros momentos el autor de Don Juan Tenorio, pues se evidencia al comparar este texto con otros que tienen por objeto el mismo personaje que hay una cierta distorsión del mismo. Todo ello contextualizado a través de una de las revistas más significativas del momento: el Semanario Pintoresco.

[Hospitals' evolution through the ages].

Science.gov (United States)

de Micheli, Alfredo

2005-01-01

The predecessor institutions of modern hospitals--Byzantine nosocómeion, European hospitale and Islamic maristan--were dissimilar both in their patients and their aims. The first charitable organizations in West Europe (Rome) and in the East (Cesarea in Cappadocia) were rather hospices. After the collapse of the Western Roman Empire (476 A.D.), some monastic centers were prepared to provide medical assistance to religious and secular patients. Since the XI and XII Centuries in all of Christian Europe the charitable institutions, designated as hospitale, multiplied. Among the Italian ones, the Roman Santo Spirito (Holy Ghost) Hospital, built in the 1201-1204 period, reached a preeminet position. This one soon became the most important of the entire Christendom (archihospital), with a lot of affiliated hospitals in Europe and later in America. The first American hospital, Saint Nicholas Hospital, opened on December 29, 1503 in Santo Domingo, obtained in 1541 its affiliation to the Santo Spirito archihospital. Regarding continental America, the first health centers were established in Mexico: the Immaculate Conception Hospital and the Saint Lazarus Hospital, both established by Hernán Cortés. For its part, clinical teaching was systematized at the Saint Francis Hospital in Padua and by there moved to Leyden. In Mexico, the chair of medical clinics or practical medicine was established in 1806 at the Saint Andrew Hospital. During the XX century, Dr. Ignacio Chávez was the driving force behind the creation of the modern Mexican Health Institutes. These ones are dedicated to the treatment of poor patients, as well as to medical teaching and research.

[Environmental noise levels in 2 intensive care units in a tertiary care centre].

Science.gov (United States)

Ornelas-Aguirre, José Manuel; Zárate-Coronado, Olivia; Gaxiola-González, Fabiola; Neyoy-Sombra, Venigna

2017-04-03

The World Health Organisation (WHO) has established a maximum noise level of 40 decibels (dB) for an intensive care unit. The aim of this study was to compare the noise levels in 2 different intensive care units at a tertiary care centre. Using a cross-sectional design study, an analysis was made of the maximum noise level was within the intensive coronary care unit and intensive care unit using a digital meter. A measurement was made in 4 different points of each room, with 5minute intervals, for a period of 60minutes 7:30, 14:30, and 20:30. The means of the observations were compared with descriptive statistics and Mann-Whitney U. An analysis with Kruskal-Wallis test was performed to the mean noise level. The noise observed in the intensive care unit had a mean of 64.77±3.33dB (P=.08), which was similar to that in the intensive coronary care unit, with a mean of 60.20±1.58dB (P=.129). Around 25% or more of the measurements exceeded the level recommended by the WHO by up to 20 points. Noise levels measured in intensive care wards exceed the maximum recommended level for a hospital. It is necessary to design and implement actions for greater participation of health personnel in the reduction of environmental noise. Copyright © 2017 Instituto Nacional de Cardiología Ignacio Chávez. Publicado por Masson Doyma México S.A. All rights reserved.

Experiencias formativas, auto-adscripciones y conflictos ambientales en el sudoeste de Misiones (Argentina

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Ana Padawer

2015-04-01

Full Text Available En este artículo abordaremos cómo se relacionan las experiencias formativas vinculadas al trabajo rural, las identificaciones y los conflictos ambientales en San Ignacio, Misiones (Argentina. Nos interesa problematizar cómo los aprendizajes ligados a las tareas rurales se vinculan con las auto-adscripciones de los sujetos, teniendo como referencia las categorías de actores sociales agrarios regionales y las denominaciones que provienen de agendas estatales de intervención. Estos procesos acontecen en un contexto de creciente concentración de propiedades que se destinan a la explotación forestal, donde observamos, en algunos casos, cierta ambientalización de los históricos conflictos territoriales.Utilizando materiales provenientes de un trabajo de campo etnográfico que iniciamos en 2008, presentaremos a dos familias de pobladores rurales. En ambos casos es posible ver cómo el acceso a la tierra es decisivo para las experiencias formativas en las actividades de reproducción social, y que se liga con identificaciones como “gente de la colonia” y una incipiente referencia a la “agricultura familiar” a partir de las intervenciones del Estado. Estas dos familias permiten mostrar cómo las experiencias e identificaciones se expresan en el contexto de la participación de los sujetos en conflictos sociales, que asumen en un caso la forma histórica de reclamos fundiarios mientras que, en el otro, es posible ver que el ambiente tiene protagonismo incipiente.

[Correlation of metabolic syndrome components in older Mexican women].

Science.gov (United States)

Ramírez-Arriola, Maria Cleofas; Mendoza-Romo, Margarita Paz; González-Rubio, Marco Vinicio; López-Esqueda, Francisco Javier; Mendoza-Romo, Miguel Angel; Velasco-Chávez, José Fernando

2011-01-01

In woman aged over 60 years, body changes occur and might cause insulin resistance and metabolic syndrome. To determine the relationship between the components of metabolic syndrome, insulin resistance and body mass index in women over 60 years, attended at the Geriatric Services in the Dr. Ignacio Morones Prieto Hospital in San Luis Potosi, Mexico. We performed an observational, descriptive and transversal study with non-probability sampling, selecting 61 women aged 60 years attended from 2006 to 2008, who have measured the body mass index (BMI), insulin resistance and homeostasis model (HOMA2), and identifying the components of metabolic syndrome according to the criteria of the World Health Organization. We used descriptive and inferential statistics with r Pearson and Chi Square. The mean age was 68 years. The average HOMA2 were 1.4 and 75 percentile 1.9. The prevalence of metabolic syndrome was present in 23%. The association test with a p metabolic syndrome dysglucemia and obesity, but not for other components of metabolic syndrome. The triglycerides level correlated with insulin resistance (r = 0.325, p = 0.011), insulin resistance with glucose (r = 0.535, p = 0.000) and insulin resistance with BMI (r = 0.282, p = 0.28). It is important to properly define the components for the presence of metabolic syndrome in older women due to not all who qualify as obese have metabolic syndrome, and neither all the metabolic syndrome are associated with insulin resistance. The single alteration of one of the components of metabolic syndrome is not sufficient to cause insulin resistance.

[Why is it important to achieve the goals of treatment of hypertension…. About a case that began as ischemic stroke].

Science.gov (United States)

Sauza-Sosa, Julio César; Romero-Figueroa, José Antonio; Sierra-Galán, Lilia Mercedes; Ferez-Santander, Sergio Mario

2016-01-01

Systemic arterial hypertension (SAH) is one of the most common conditions seen in primary care of cardiovascular disease and whose consequences; depending on the "target organ" affecting produce ischemic heart disease, cerebral vascular disease or chronic kidney disease. In the pathogenesis of HAS are several physiopathological mechanisms involved; of which currently, to name the most important and frequent play a role in increasing adrenaline levels, the renin-angiotensin-aldosterone system and recently, much the participation of insulin resistance and hyperinsulinemia mentioned. These processes lead to an imbalance between the sympathetic and parasympathetic tone, coupled with hypersensitivity sodium trigger one of the pathophysiologic mechanisms of hypertension. SAH is currently defined as finding numbers of older blood pressure 140/90mm Hg. This is one of the diseases that most affect the world population prevalences found in age and gender groups 45 to 55% in men between 45 and 70 years and 45 to 65% in women of the same age group. In 2013 most recent clinical guidelines for treatment and the recommended goals, which has managed to reduce its complications and mortality were published; among which include vascular diseases such as ischemic heart and brain and kidney. In this paper a case that exemplifies the secondary complications in late diagnosis, damage to "target organ" by long-term exposure and inadequate compliance with therapeutic goals discussed. Copyright © 2015 Instituto Nacional de Cardiología Ignacio Chávez. Published by Masson Doyma México S.A. All rights reserved.

[Determination of prognostic value of the OESIL risk score at 6 months in a Colombian cohort with syncope evaluated in the emergency department; first Latin American experience].

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Díaz-Tribaldos, Diana Carolina; Mora, Guillermo; Olaya, Alejandro; Marín, Jorge; Sierra Matamoros, Fabio

2017-07-14

To establish the prognostic value, with sensitivity, specificity, positive predictive value, and negative predictive value for the OESIL syncope risk score to predict the presentation of severe outcomes (death, invasive interventions, and readmission) after 6 months of observation in adults who consulted the emergency department due to syncope. Observational, prospective, and multicentre study with enrolment of subjects older than 18 years, who consulted in the emergency department due to syncope. A record was mad of the demographic and clinical information of all patients. The OESIL risk score was calculated, and severe patient outcomes were followed up during a 6 month period using telephone contact. A total of 161 patients met the inclusion criteria and were followed up for 6 months. A score above or equal to 2 in the risk score, classified as high risk, was present in 72% of the patients. The characteristics of the risk score to predict the combined outcome of mortality, invasive interventions, and readmission for a score above or equal to 2 were 75.7, 30.5, 43.1, and 64.4% for sensitivity, specificity, positive predictive value, and negative predictive value, respectively. A score above or equal to 2 in the OESIL risk score applied in Colombian population was of limited use to predict the studied severe outcomes. This score will be unable to discriminate between patients that benefit of early admission and further clinical studies. Copyright © 2017 Instituto Nacional de Cardiología Ignacio Chávez. Publicado por Masson Doyma México S.A. All rights reserved.

[Influence of the professional experience of the clinical cardiologist on the adequacy of the clinical indications of myocardial perfusion gated-SPECT].

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Dominguez-Rodriguez, Alberto; Avanzas, Pablo; Abreu-Gonzalez, Pedro; Sanchez Grande-Flecha, Alejandro; García-Baute, María Del Carmen; Gómez, María Ángeles

2017-11-30

During cardiology training, the cardiology fellow has to be trained in all things related to the indication, interpretation, and performing of nuclear cardiology studies using single photon emission computed tomography (SPECT). The aim of the present study was to analyse the relationship between the adequacy of indications of myocardial perfusion gated-SPECT and the years of experience since the completion of cardiology training. A descriptive, retrospective analysis was performed on a single-centre register, in which the indications (adequate or inadequate use) were recorded according to myocardial perfusion gated-SPECT guidelines, prescribed by cardiologists of a university hospital. A total of 950 gated-SPECT tests were analysed according to the appropriate or inadequate indication. The sample of study was distributed in quartiles (years) since the cardiologist finished the residency. Cardiologists with less than 10 years of clinical experience reported a higher proportion of gated-SPECT tests compared to the more experienced cardiologists (87.6 vs. 9.3%, P<.001). After adjusting for age, gender, and cardiovascular risk factors, the multivariate analysis showed that, for each year of experience after completion of cardiology training, the probability of adequately indicating the test (OR: 1.33, 95% CI: 1.29-1.38, P<.001) was statistically significant. The professional experience of the clinical cardiologist is the most important factor to perform an appropriate indication of gated-SPECT myocardial perfusion. Copyright © 2017 Instituto Nacional de Cardiología Ignacio Chávez. Publicado por Masson Doyma México S.A. All rights reserved.

[Demographic analysis of a congenital heart disease clinic of the Mexican Institute of Social Security, with special interest in the adult].

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Márquez-González, Horacio; Yáñez-Gutiérrez, Lucelli; Rivera-May, Jimena Lucely; López-Gallegos, Diana; Almeida-Gutiérrez, Eduardo

2017-11-07

Congenital heart disease (CHD) has an incidence of 8-10 cases per 1000 live births. In Mexico, there are 18,000-20,000 new cases per year. Most tertiary care centers for CHD attend only pediatric population; the Mexican Institute of Social Security (IMSS) has a clinic that attends pediatric and adult population. To analyze the demographic aspects of the CHD clinic of IMSS. From 2011 to 2016 a cross-sectional study of the CC clinic of a third level hospital of the IMSS, including all patients with confirmed structural heart disease of recent diagnosis was carried out. The sex, age, reference entity, antecedent of pregnancy and treatment were registered. The population was divided into age ranges (17.1 years). Descriptive statistics and χ 2 test were used in qualitative variables. 3,483 patients with CHD (male:female ratio, 0.8:1.2) were included. Increased pulmonary flow acyanogenic cardiopathies were the most frequent CHD group (47.2%), with atrial septal defect being the most frequent diagnosis overall; 25.6% were adults and 35% of women with a history of pregnancy. Chiapas was Federal entity with greater proportion of patients diagnosed in the adult stage (33.82%); 7% were not candidates for any treatment for complications of the disease. CHD is a late diagnosis; it is necessary to create a national register to promote new health policies and a rational distribution of resources for these patients. Copyright © 2017 Instituto Nacional de Cardiología Ignacio Chávez. Publicado por Masson Doyma México S.A. All rights reserved.

Los estudios de medicina en Santafé de Bogotá EN LA ÉPOCA DE LA INDEPENDENCIA

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Humberto Roselli

1979-06-01

Full Text Available

CAPITULO TERCERO

En el vestíbulo de la escalera principal de la antigua Facultad Nacional de Medicina, había una lápida conmemorativa de los médicos de la Independencia, hoy en la Ciudad Universitaria. Se erigió como un homenaje de la Academia Nacional de Medicina, de la Facultad y del Cuerpo Médico del país a dichos próceres, en 1.940, con motivo del centenario de la muerte del General Francisco de Paula Santander. El alto relieve, ejecutado por el escultor José Domingo Rodríguez, muestra en un primer término, la figura de una mujer con un gorro frigio, en pie, que representa la Patria, y a su lado un grupo de soldados heridos en pleno campo de batalla. La leyenda, puesta al pie, dice así:

HOMENAJE A LOS MEDICOS DE LA GUERRA DE INDEPENDENCIA
José Félix Merlzalde
Francisco Ignacio Carreño
Carlos Moore
Joaquín García
José C. Zapata
Miguel Ibáñez
Benito Osorio
Juan Ma. Pardo
Pedro Lasso de la Vega
Manuel M. Quijano y
Santos González

EL CUERPO MEDICO COLOMBIANO. MCCMX. MCMXXXX

[Future status of ischaemic heart disease in the state of San Luis Potosí: A predictive dynamic model].

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Gaytán-Hernández, Darío; Díaz-Oviedo, Aracely; Gallegos-García, Verónica; Terán-Figueroa, Yolanda

To develop a predictive dynamic model to generate and analyse the future status of the incidence rate of ischaemic heart disease in a population of 25 years and over in Mexico, according to the variation in time of some risk factors. Retrospective ecological study performed during the period 2013-2015, in San Luis Potosí City, Mexico. Secondary databases that corresponded to the years 2000, 2005, and 2010, were used along with official indicators of the 58 municipalities of the state of San Luis Potosí. Eight indicators were analysed at municipality level, using principal components analysis, structural equation modelling, dynamic modelling, and simulation software methods. Three components were extracted, which together explained 80.43% of the total variance of the official indicators used. The second component had a weight of 16.36 units that favoured an increase of the disease analysed. This component was integrated only by the indicator AGE 60-64 and the expected stage of it increasing. The structural model confirmed that the indicators explain 42% of the variation of this disease. The possible stages for the years 2015, 2020, and 2025 are 195.7, 240.7, and 298.0, respectively for every 100,000 inhabitants aged 25 and over. An exponential increase in the incidence rate of ischaemic heart disease is expected, with the age of 60-64 years being identified as the highest risk factor. Copyright © 2017 Instituto Nacional de Cardiología Ignacio Chávez. Publicado por Masson Doyma México S.A. All rights reserved.

[Stem cells: searching predisposition to cardiac commitment by surface markers expression].

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Lara-Martínez, Luis A; Gutiérrez-Villegas, Ingrid; Arenas-Luna, Victor M; Hernández-Gutierrez, Salomón

2018-01-05

It is well-known that cardiovascular diseases are the leading cause of death worldwide, and represent an important economic burden to health systems. In an attempt to solve this problem, stem cell therapy has emerged as a therapeutic option. Within the last 20 years, a great variety of stem cells have been used in different myocardial infarction models. Up until now, the use of cardiac stem cells (CSCs) has seemed to be the best option, but the inaccessibility and scarcity of these cells make their use unreliable. Additionally, there is a high risk as they have to be obtained directly from the heart of the patient. Unlike CSCs, adult stem cells originating from bone marrow or adipose tissue, among others, appear to be an attractive option due to their easier accessibility and abundance, but particularly due to the probable existence of cardiac progenitors among their different sub-populations. In this review an analysis is made of the surface markers present in CSCs compared with other adult stem cells. This suggested the pre-existence of cells sharing specific surface markers with CSCs, a predictable immunophenotype present in some cells, although in low proportions, and with a potential of cardiac differentiation that could be similar to CSCs, thus increasing their therapeutic value. This study highlights new perspectives regarding MSCs that would enable some of these sub-populations to be differentiated at cardiac tissue level. Copyright © 2017 Instituto Nacional de Cardiología Ignacio Chávez. Publicado por Masson Doyma México S.A. All rights reserved.

Aislamiento y caracterización de células “stem” mesenquimales de médula ósea humana según criterios de la Sociedad Internacional de Terapia Celular

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Jose Alejandro Aristizabal-Castellanos

2010-12-01

Full Text Available Isolation and characterization of mesenchymal stem cells from human bone marrow according to the criteria of the InternationalSociety for Cellular Therapy. Bone marrow (BM is an important source for isolating mesenchymal stem cells (MSC useful inimmunomodulation and tissue regeneration therapies. Objective. To isolate and characterize mesenchymal stem cells obtained from BMmeeting the requirements of the International Society for Cellular Therapy. Materials and methods. BM samples were collected fromvolunteer donors attending the Orthopedics Service of the San Ignacio University Hospital (Bogotá, Colombia. Morphological characteristicswere evaluated by inverted microscopy and the immunophenotype was determined by flow cytometry. Protocols were developed foradipogenic, osteogenic and chondrogenic differentiation using the Oil Red O, alkaline phosphatase and safranin stains, respectively.Results. We collected 24 samples of BM from patients with total hip replacement (volume of BM sample: 5-45 ml. Cells with afibroblastoid morphology were isolated from 21 BM samples (isolation efficiency: 87.5%. No statistical significant differences were foundbetween the hematopoyetic antigens (CD34 and CD45, p>0.05 in the immunophenotypic evaluation (of MSC from BM; on the contrary,there were differences (p=0.006 between the hematopoyetic antigen CD45 and the mesenchymal antigens (CD13, CD44, CD73, CD90,CD105, HLA-I, and HLA-DR. Oil Red O stain revealed the presence of multilocular adipocytes, in the osteogenic induction we observedlocalized mineralization nodules, and chondrogenesis was positive as revealed by the safranin stain. Conclusion. MSC were satisfactorilyisolated from BM and characterized according to the international standards.

[Nursing process in advanced cardiopulmonary resuscitation].

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Lucio Peña, Gerardo; Fuentes Leonardo, Ana María

2002-01-01

The process male nurse is a systematic and organized method to offer effective and efficient cares guided to the achievement of solving real problems of health, reducing the incidence and the duration. It is organized and systematic for that consists of five sequential and interrelated steps: Valuation, diagnostic, planning, execution and evaluation, in which are carried out interrelated actions, thought to maximize the long term results. The nurse process is based on the notion that the success of the cares is measured by the degree of effectiveness and the degree of satisfaction and the patient's progress. Applying this method in the Advanced Cardiac Live Support (ACLS) the identification of a cardiovascular or cardiopulmonary urgency was achieved that implies advanced treatment of the air road, defibrillation and appropriate medications to the circumstances. The ACLS challenges the nurses in charge from the patient's attention to make decisions quick low pressure and in dramatic scenes. Reason why it develops the flowing process male nurse in the advanced cardiopulmonary reanimation due to the incidence of these events in the National Institute of Cardiology Ignacio Chávez, which should guarantee the benefit of services in basic and advanced cardiopulmonary reanimation for personal with a high formation level in all the units of intensive cares and services of hospitalization in integrated form and stratified this way to avoid that it progresses to situations that cause the death or leave irreversible sequels since in the central nervous system the time it is a factor critical for the treatment of this events.

[Cardiovascular exercise on obese women: effects on adiponectine, leptine, and tumour necrosis factor-alpha].

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Landeros-Olvera, Erick; López-Alvarenga, Juan Carlos; Nava-González, Edna J; Gallegos-Cabriales, Esther; Lavalle-González, Fernando; Bastarrachea, Raúl A; Salazar González, Bertha Cecilia

2014-01-01

The relationship of hormones adiponectin, leptin and tumor necrosis factor-alpha in adipose tissue on the atherogenic process is one of the most promising models in preventive medicine. The numerous tests performed to identify the effect of exercise on these hormones have not been clear on the type of exercise routine and physical effort calculated to contribute to changing plasma concentrations in obese women. Analyze controlledcardiovascular exercise effect on serum level of adiponectin, leptin, and tumournecrosis factor-alpha in obese young women. A simple blind clinical essay. The intervention covered a 10-week controlled, cardiovascular exercise program by 34 women (cases n=17, controls n=17) with a body mass index>27kg/m(2). Molecular analysis was performed by immune-fluorescence. Following the intervention, cases and controls means were as follows: adiponectin 19.0 vs. 12.2μ/ml (P=.008); leptin 20.0 vs. 28.0μ/L (P=.02); and tumour necrosis factor-alpha 4.7 vs. 5.1pg/ml (P=.05). The established exercise (5 sessions a week of exercise of 40min each for 10 weeks with a heart rate reserve of 40 to 80%) improved plasma concentrations of these hormones in the expected direction. This finding highlights an unpublished amount of exercise, controlled by the reserve cardiac frequency that might contribute the cardiovascular and metabolic protection to obese women. Copyright © 2013 Instituto Nacional de Cardiología Ignacio Chávez. Published by Masson Doyma México S.A. All rights reserved.

[Scimitar syndrome. Correlation anatomo-embryological].

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Muñoz-Castellanos, Luis; Kuri-Nivon, Magdalena

2016-01-01

To describe morphologically a toracoabdominal visceral block of a scimitar's syndrome case. We propose a pathogenetic theory wich explains the development of the pulmonary venous connection in this syndrome. The anatomic specimen was described with the segmental sequential system. The situs was solitus, the connections between the cardiac segments and the associated anomalies were determined. The anatomy of both lungs, including the venous pulmonary connection, was described. A pathogenetic hypothesis was made, which explains the pulmonary venous connection throw a correlation between the pathology of this syndrome and the normal development of the pulmonary veins. The situs was solitus, the connections of the cardiac chambers were normal; there were hypoplasia and dysplasia of the right lung with sequestration of the inferior lobe; the right pulmonary veins were connected with a curved collector which drainaged into the suprahepatic segment of the inferior vena cava; the left pulmonary veins were open into the left atrium. The sequestered inferior lobe of the right lung received irrigation throw a collateral aortopulmonary vessel. There was an atrial septal defect. The pathogenetic hypothesis propose that the pulmonary venous connection in this syndrome represent the persistent of the Streeter's horizon xiv (28-30 days of development), period in which the sinus of the pulmonary veins has double connection, with the left atrium and with a primitive collector into the right viteline vein which forms the suprahepatic segment of the inferior vena cava. Copyright © 2015 Instituto Nacional de Cardiología Ignacio Chávez. Published by Masson Doyma México S.A. All rights reserved.

Homenaje: Hernando Groot Liévano, Académico y Maestro

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Efraím Otero-Ruiz

2003-10-01

a ellos se iniciaba también, anexo al Laboratorio Samper Martínez, el Instituto Carlos Finlay de investigación en esas materias, principalmente fiebre amarilla e infecciones virales.

La Facultad de Medicina de la Javeriana apenas se estaba medio organizando en el vetusto claustro de San Ignacio, después de una diáspora inicial que había incluído clases dictadas en garages y casas de alquiler de la vecindad. Y se estaban dando pasos acelerados en la construcción del anfiteatro de anatomía de la calle 24-Sur (hoy Barrio Restrepo, desde donde se visualizaban los amplios terrenos vacíos que circundaban la ya iniciada obra del Hospital Antituberculoso de San Carlos. Para 1948, año en que yo inicié mis estudios de medicina, ya se había concluido la formidable estructura en concreto del futuro Hospital San Ignacio de la calle 40, que continuaría así por más de una década.

En cuanto al claustro de San Ignacio, oigamos la descripción que hice del mismo en la nota necrológica que escribí sobre mi amigo Jorge Guzmán Toledo (“Boliche” y que fue publicada en 1997 en la revista “Estetoscopio”: “La Facultad de Medicina de la Javeriana tenia como sede el viejo caserón anexo a la iglesia de San Ignacio y el Colegio de San Bartolomé, en la esquina sur-oriental de la plaza de Bolívar, frente al Capitolio Nacional. Ese caserón ya fue demolido hace muchos años y dio lugar a una elegante plazoleta que complementa la muy linda de palmeras centenarias, situada frente a la iglesia y enmarcada por la casa donde imprimió Nariño los Derechos del Hombre. Justamente por ese ‘apiñuscamiento’ de los alumnos de los tres primeros años en el viejo edificio –los de los tres últimos ya se diseminaban por varios hospitales de Bogotá- la estratificación entre un curso y otro no era muy estricta y todos compartíamos el espacio en un primitivo ‘café’ del primer piso, junto al patio colonial, o en la pequeña tienda donde Candelaria, una

Effect of tomato consumption on high-density lipoprotein cholesterol level: a randomized, single-blinded, controlled clinical trial

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Cuevas-Ramos D

2013-07-01

Full Text Available Daniel Cuevas-Ramos,1 Paloma Almeda-Valdés,1 Emma Chávez-Manzanera,1 Clara Elena Meza-Arana,2 Griselda Brito-Córdova,1 Roopa Mehta,1 Oscar Pérez-Méndez,3 Francisco J Gómez-Pérez1 1Department of Endocrinology and Metabolism, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico; 2Department of Internal Medicine, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico; 3Department of Molecular Biology, Instituto Nacional de Cardiología Ignacio Chávez, Mexico City, Mexico Introduction: Epidemiologic evidence suggests that tomato-based products could reduce the risk of cardiovascular diseases. One of the main cardiovascular risk factors is low levels of high-density lipoprotein cholesterol (HDL-C. This study aimed to prospectively evaluate the effect of tomato consumption on HDL-C levels. Subject and methods: We conducted a randomized, single-blinded, controlled clinical trial. We screened 432 subjects with a complete lipid profile. Those individuals with low HDL-C (men 40 mg/dL. A linear regression model that adjusted for those parameters that impact HDL-C levels (age, gender, waist-to-hip ratio, body mass index, fasting triglyceride concentration, simple sugars, alcohol, physical activity, and omega-3 consumption showed an independent association between tomato consumption and the increase in HDL-C (r2 = 0.69; P > 0.0001. Conclusion: Raw tomato consumption produced a favorable effect on HDL-C levels in overweight women. Keywords: lycopene, hypoalphalipoproteinemia, dyslipidemia, overweight, cardiovascular diseases

Sudden death in eating disorders

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Jáuregui-Garrido B

2012-02-01

Full Text Available Beatriz Jáuregui-Garrido1, Ignacio Jáuregui-Lobera2,31Department of Cardiology, University Hospital Virgen del Rocío, 2Behavioral Sciences Institute, 3Pablo de Olavide University, Seville, SpainAbstract: Eating disorders are usually associated with an increased risk of premature death with a wide range of rates and causes of mortality. “Sudden death” has been defined as the abrupt and unexpected occurrence of fatality for which no satisfactory explanation of the cause can be ascertained. In many cases of sudden death, autopsies do not clarify the main cause. Cardiovascular complications are usually involved in these deaths. The purpose of this review was to report an update of the existing literature data on the main findings with respect to sudden death in eating disorders by means of a search conducted in PubMed. The most relevant conclusion of this review seems to be that the main causes of sudden death in eating disorders are those related to cardiovascular complications. The predictive value of the increased QT interval dispersion as a marker of sudden acute ventricular arrhythmia and death has been demonstrated. Eating disorder patients with severe cardiovascular symptoms should be hospitalized. In general, with respect to sudden death in eating disorders, some findings (eg, long-term eating disorders, chronic hypokalemia, chronically low plasma albumin, and QT intervals >600 milliseconds must be taken into account, and it must be highlighted that during refeeding, the adverse effects of hypophosphatemia include cardiac failure. Monitoring vital signs and performing electrocardiograms and serial measurements of plasma potassium are relevant during the treatment of eating disorder patients.Keywords: sudden death, cardiovascular complications, refeeding syndrome, QT interval, hypokalemia

Numerical and clinical precision of continuous glucose monitoring in Colombian patients treated with insulin infusion pump with automated suspension in hypoglycemia.

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Gómez, Ana M; Marín Sánchez, Alejandro; Muñoz, Oscar M; Colón Peña, Christian Alejandro

2015-12-01

Insulin pump therapy associated with continuous glucose monitoring has shown a positive clinical impact on diabetes control and reduction of hypoglycemia episodes. There are descriptions of the performance of this device in other populations, but its precision and accuracy in Colombia and Latin America are unknown, especially in the routine outpatient setting. Data from 33 type 1 and type 2 diabetes patients with sensor-augmented pump therapy with threshold suspend automation, MiniMed Paradigm® Veo™ (Medtronic, Northridge, California), managed at Hospital Universitario San Ignacio (Bogotá, Colombia) and receiving outpatient treatment, were analyzed. Simultaneous data from continuous glucose monitoring and capillary blood glucose were compared, and their precision and accuracy were calculating with different methods, including Clarke error grid. Analyses included 2,262 continuous glucose monitoring -reference paired glucose values. A mean absolute relative difference of 20.1% was found for all measurements, with a value higher than 23% for glucose levels ≤75mg/dL. Global compliance with the ISO criteria was 64.9%. It was higher for values >75mg/dl (68.3%, 1,308 of 1,916 readings), than for those ≤ 75mg/dl (49.4%, 171 of 346 readings). Clinical accuracy, as assessed by the Clarke error grid, showed that 91.77% of data were within the A and B zones (75.6% in hypoglycemia). A good numerical accuracy was found for continuous glucose monitoring in normo and hyperglycemia situations, with low precision in hypoglycemia. The clinical accuracy of the device was adequate, with no significant safety concerns for patients. Copyright © 2015 SEEN. Published by Elsevier España, S.L.U. All rights reserved.

National Registry of Cardiac Rehabilitation Programs in Mexico II (RENAPREC II).

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Ilarraza-Lomelí, Hermes; García-Saldivia, Marianna; Rojano-Castillo, Jessica; Justiniano, Samuel; Cerón, Norma; Aranda-Ayala, Zulema-L; Rodríguez, Azucena; Hernández, Alejandro; Cassaigne, María-Elena; Cantero, Raúl; Gasca, Pablo; Hinojosa, Tania; Alonso, Jesús; Romo, Ricardo; Lara, Jorge; Pimentel, Elizabeth; Zavala, Juana; Rius-Suárez, María-Dolores; Cherebetiu, Gabriel; Cortés, Othniel; Almaraz, Alejandro; Mendoza, Pedro; Silva, Jesús; Tirado, Enrique; Martínez, Leonel

The aim of this paper is to compare the state of Cardiac Rehabilitation Programs (CRP) in 2009 with 2015. Focus is directed on health care, training of health-providers, research, and the barriers to their implementation. All authors of RENAPREC-2009, and other cardiac rehabilitation leaders in Mexico were requested to participate. These centres were distributed into two groups: RENAPREC-2009 centres that participated in 2015, and the new CRP units. In 2009 there were 14 centres, two of which disappeared and another two did not respond. CRP-units increased by 71% (n=24), and their geographic distribution shows a centripetal pattern. The coverage of CRP-units was 0.02 centres per 100,000 inhabitants. Only 4.4% of eligible patients were referred to CRP, with a rate of 10.4 patients/100,000 inhabitants in 2015. The ratio of Clinical Cardiologists to Cardiac Rehabilitation Specialists was 94:1, and the ratio of Intervention Specialists to cardiac rehabilitation experts was 16:1. Cardiac rehabilitation activities and costs varied widely. Patient dropout rate in phase II was 12%. Several barriers were identified: financial crisis (83%), lack of skilled personnel (67%), deficient equipment (46%), inadequate areas (42%), and a reduced number of operating centres (38%). CRPs in Mexico are still in the process of maturing. Mexican CRP-centres have several strengths, like the quality of the education of the professionals and the multidisciplinary programs. However, the lack of referral of patients and the heterogeneity of procedures are still their main weaknesses. Copyright © 2016 Instituto Nacional de Cardiología Ignacio Chávez. Publicado por Masson Doyma México S.A. All rights reserved.

El declinar de la profecía en el siglo II: Notas para un ensayo

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Sergio Zañartu

2009-01-01

Full Text Available El autor presenta recientes estudios sobre el tema, como el de Aune. Introduce con Qumrán, Juan Bautista y Jesús, siendo este la Palabra definitiva de Dios. En su esbozo recorre diversas fuentes en el siguiente orden. Irrupción del Espíritu y Hch. La profecía en Corinto y en la Didache. Pablo y Pedro como profetas. Tradición apostólica, dichos de Jesús y exegesis carismática. No especiales problemas doctrinales en el profetismo. La profecía de Ap y su autoridad. Los himnos inspirados, como las Odas de Salomón. Ignacio de Antioquía y Policarpo. El desafío del montañismo y el discernimiento de la profecía. Orientado por este recorrido, el autor concluye presentando las principales razones del declinar profético.The author presents recent studies on the subject, such as that of Aune. He begins with Qumran, John the Baptist and Jesus, He being the definitive word of God. In his study, he goes through various sources in the following order. Emergence of the Spirit and Acts; the prophecy in Corinth and the Didache. Paul and Peter as prophets. Apostolic tradition, quotes of Jesus and charismatic exegesis. Non special doctrinal issues in the prophetism. The prophecy of the Revelation and its authority. The inspired hymns such as Solomon's Odes. Ignatius of Antioch and Polycarp. The challenge of Montanism and the discernment of the prophecy. Following this course, the author concludes by presenting the main reasons of the prophetic decline.

Inferior vena cava filters in pulmonary embolism: A historic controversy.

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Jerjes-Sanchez, Carlos; Rodriguez, David; Navarrete, Aline; Parra-Cantu, Carolina; Joya-Harrison, Jorge; Vazquez, Eduardo; Ramirez-Rivera, Alicia

Rationale for non-routine use of inferior venous cava filters (IVCF) in pulmonary embolism (PE) patients. Thrombosis mechanisms involved with IVCF placement and removal, the blood-contacting medical device inducing clotting, and the inorganic polyphosphate in the contact activation pathway were analyzed. In addition, we analyzed clinical evidence from randomized trials, including patients with and without cancer. Furthermore, we estimated the absolute risk reduction (ARR), the relative risk reduction (RRR), and the number needed to treat (NNT) based on the results of each study using a frequency table. Finally, we analyzed the outcome of our PE patients that were submitted to thrombolysis with short and long term follow-up. IVCF induces thrombosis by several mechanisms including placement and removal, rapid protein adsorption, and simultaneous surface-induced activation via the contact activation pathway. Also, inorganic polyphosphate has an important role as a procoagulant, reversing the effect of anticoagulants. Randomized control trials included 904 cancer and non-cancer PE patients. In terms of ARR, RRR, and NNT, there is no evidence for routine use of IVCF. In 290 patients with proved PE, extensive thrombotic burden and right ventricular dysfunction under thrombolysis and oral anticoagulation, we observed a favorable outcome in a short- and long-term follow-up; additionally, IVCF was only used in 5% of these patients. Considering the complex mechanisms of thrombosis related with IVCF, the evidence from randomized control trials and ARR, RRR, and NNT obtained from venous thromboembolism patients with and without cancer, non-routine use of IVCF is recommended. Copyright © 2017 Instituto Nacional de Cardiología Ignacio Chávez. Publicado por Masson Doyma México S.A. All rights reserved.

[P wave dispersion increased in childhood depending on blood pressure, weight, height, and cardiac structure and function].

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Chávez-González, Elibet; González-Rodríguez, Emilio; Llanes-Camacho, María Del Carmen; Garí-Llanes, Merlin; García-Nóbrega, Yosvany; García-Sáez, Julieta

2014-01-01

Increased P wave dispersion are identified as a predictor of atrial fibrillation. There are associations between hypertension, P wave dispersion, constitutional and echocardiographic variables. These relationships have been scarcely studied in pediatrics. The aim of this study was to determine the relationship between P wave dispersion, blood pressure, echocardiographic and constitutional variables, and determine the most influential variables on P wave dispersion increases in pediatrics. In the frame of the PROCDEC II project, children from 8 to 11 years old, without known heart conditions were studied. Arterial blood pressure was measured in all the children; a 12-lead surface electrocardiogram and an echocardiogram were done as well. Left ventricular mass index mean values for normotensive (25.91±5.96g/m(2.7)) and hypertensive (30.34±8.48g/m(2.7)) showed significant differences P=.000. When we add prehypertensive and hypertensive there are 50.38% with normal left ventricular mass index and P wave dispersion was increased versus 13.36% of normotensive. Multiple regression demonstrated that the mean blood pressure, duration of A wave of mitral inflow, weight and height have a value of r=0.88 as related to P wave dispersion. P wave dispersion is increased in pre- and hypertensive children compared to normotensive. There are pre- and hypertensive patients with normal left ventricular mass index and increased P wave dispersion. Mean arterial pressure, duration of the A wave of mitral inflow, weight and height are the variables with the highest influence on increased P wave dispersion. Copyright © 2013 Instituto Nacional de Cardiología Ignacio Chávez. Published by Masson Doyma México S.A. All rights reserved.

[Percutaneous closure of the patent ductus arteriosus in children with the Amplatzer Duct Occluder II].

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Parra-Bravo, José Rafael; Osuna-Izaguirre, Manuel Alfredo; Beirana-Palencia, Luisa; Gálvez-Cancino, Franco; Martínez-Monterrosas, Christian; Lazo-Cárdenas, César; Reyes-Vargas, César

2014-01-01

In the last decades, several devices have been used for the percutaneous closure of patent ductus arteriosus, with its own limitations and risks. The Amplatzer Duct Occluder II has been designed to overcome those limitations and reduce risks. We described our initial series of patients who underwent percutaneous closure of patent ductus arteriosus with the Amplatzer Duct Occluder II, emphasis on the technical aspects of the procedure. We reviewed the clinical records of 9 patients with patent ductus arteriosus who underwent percutaneous closure with the Amplatzer Duct Occluder II. Median age was 24 months (range 8-51 months) and the median weight was 10.7kg (range 6-16.3kg). The minimal ductus arteriosus diameter was 2.7mm (1-5mm). Implantation was successful in all cases. The devices most commonly used (33.3%) were the dimensions 4-4mm (3 patients), in 2 patients were used 3-4mm and in the rest of the patients were employed occluder other sizes. Four cases showed slight residual flow immediately after implantation. Total closure was achieved in 24h in 8 of 9 patients (89%). There was no embolization of the occluder or deaths during the procedure and we only observed one minor complication. The Amplatzer Duct Occluder II in this series was effective in 89% of the patients at 24hs after the procedure and 100% follow-up. The implantation was safe and no major complications were observed. The occlusion rate is comparable to those reported for the Amplatzer Duct Occluder I. Copyright © 2013 Instituto Nacional de Cardiología Ignacio Chávez. Published by Masson Doyma México S.A. All rights reserved.

Effect of physical training on the recovery of acute exercise, among patients with cardiovascular disease.

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García-Saldivia, Marianna; Ilarraza-Lomelí, Hermes; Myers, Jonathan; Lara, Jorge; Bueno, Leopoldo

Physical training programs (PTP) have shown several beneficial effects for patients with cardiovascular disease (CVD), particularly by increasing survival and quality of life. Physiological response during the effort and recovery phases of an exercise testing, is one of the strongest prognostic markers among patients with CVD. A reasonable mechanism that explains those training effects on survival is through the adaptations seen on heart rate recovery (HRR) and oxygen uptake kinetics at the post-exertional phase (RVO 2 ). Compare the HRR and RVO 2 values before and after a PTP in patients with CVD. We studied a cohort of patients included in a cardiac rehabilitation program, whom performed a cardiopulmonary exercise testing (CPX). Then, risk stratification and an individualized exercise training program were performed. The exercise training program included 20 sessions of aerobic exercise, 30min a day, five times a week, at moderate intensity. Finally, a second CPX was performed. A total of 215 patients were included. Peak oxygen uptake values rose 2.2±5.2ml/kg/min (p<0.001), HRR increased 1.6±10bpm (p<0.05) and RVO 2 improved -21±98s (p<0.001). A post-hoc analysis show that the percentage of maximum heart rate remained statistically associated with HRR increment. Furthermore, diabetes and sedentarism were strongly related to RVO 2 improvement. No correlation between HRR and RVO 2 was found (R 2 =0.002). Physical exercise was associated with a beneficial effect on HRR and RVO 2 . Nevertheless, both variables were statistically unrelated. Copyright © 2016 Instituto Nacional de Cardiología Ignacio Chávez. All rights reserved.

Utility of myeloperoxidase in the differential diagnosis of acute coronary syndrome.

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Calmarza, Pilar; Lapresta, Carlos; Martínez, María; Lahoz, Raquel; Povar, Javier

2017-12-07

To determine the usefulness of myeloperoxidase in discriminating between patients with acute coronary syndrome and patients with chest pain by other causes. The study included all patients over 18 years of age who come consecutively to the emergency department from September 2015 to December 2015 with chest pain of non-traumatic origin. The initial patient evaluation was performed according to the study protocol for patients with suspected acute coronary syndrome (ACS) in our Emergency Department. This included the serial measurement of troponin, and in this case myeloperoxidase, with serialization on admission and at 6h. For the determination of myeloperoxidase (MPO), a single step sandwich enzyme immunoassay by Siemens, automated on a Dimension analyser, was used. Statistically significant differences were observed in the concentration of myeloperoxidase at time 0 among patients diagnosed with ACS: 505 (413)pmol/L, and non-ACS patients: 388 (195)pmol/L (p<.001), as well as at 6h (p<.001). An area under the curve ROC of 0.824 was obtained at 6h for ACS patients, with a confidence interval of 95% from 0.715 to 0.933 and a level of significance of p<.001. Statistically significant differences were also found in the concentration of myeloperoxidase at time 0 and at 6h among patients with ACS and patients with heart disease other than coronary artery disease. The concentration of MPO helps to differentiate between ACS and non-ACS patients, as well as between ACS patients and patients with heart diseases other than coronary artery disease. Copyright © 2017 Instituto Nacional de Cardiología Ignacio Chávez. Publicado por Masson Doyma México S.A. All rights reserved.

Geographic variation in migration chronology and winter distribution of midcontinent greater white-fronted geese

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Ely, Craig R.; Nieman, Daniel J.; Alisauskas, Ray T.; Schmutz, Joel A.; Hines, James E.

2013-01-01

We evaluated spatial and temporal differences in migratory behavior among different breeding groups of midcontinent greater white-fronted geese (Anser albifrons) using band-recovery data and observations of neck collared geese during migration and winter. Birds from different breeding areas were initially delineated by geographic distance into 6 banding reference areas (BRAs): 1) interior Alaska, 2) North Slope of Alaska, 3) western Northwest Territories (NWT), 4) western Nunavut, 5) central Nunavut, and 6) eastern Nunavut. The banding groups also differed by breeding habitat, with geese from interior Alaska nesting in the boreal forest (taiga), and all other groups breeding in tundra habitats. Geese from interior Alaska migrated earlier during autumn, and were more likely to winter farther south (in Mexico) than geese from other breeding areas. Geese banded in central and eastern Nunavut (Queen Maud Gulf and Inglis River) wintered farther east (in Louisiana) than geese from other breeding areas. Small-scale (within-state) geographic segregation of wintering flocks was evidenced by the recent (post-1990) nearly exclusive use of a new wintering area in north central Texas by geese from interior Alaska. Segregation among BRAs was also apparent in Mexico, where taiga geese were found predominantly in the central Highlands (states of Zacatecas and Durango), whereas tundra geese mostly used states along the Gulf Coast (primarily Tamaulipas). Interior Alaska birds initiated spring migration earlier than geese from other areas, and were more likely than others to stop in the Rainwater Basin of Nebraska, a region where cholera outbreaks periodically kill thousands of geese. Geese from interior Alaska were the first to arrive at spring staging areas in prairie Canada where BRAs exhibited spatial delineation (a longitudinal cline) in relation to breeding areas. Our results show significant geographic and temporal variation among taiga and tundra breeding cohorts during

Una Normal y un Método. La iniciativa de Fray Matías de Córdova en Chiapas (1828

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Morelos Torres Aguilar

2016-01-01

Full Text Available El art culo es producto de una investigaci n m s amplia sobre las iniciativas de ense anza que fueron realizadas en el Estado de Chiapas, en M xico, durante el siglo XIX, y se centra en la idea que dio origen a la Escuela Normal de Ense anza Primaria, fundada en Ciudad Real por fray Mat as de C rdova en 1828. El principal objetivo de la investigaci n consiste en conocer, describir, analizar y comprender las principales caracter sticas de esta instituci n, as como el m todo de lectoescritura inventado por su fundador, el cual fue aplicado con xito en la misma. Un segundo prop sito consiste en contextualizar dicha escuela normal respecto a otras que surgieron en M xico durante el mismo per odo, como la de Oaxaca o Zacatecas. Por ltimo, se pretende relacionar esta iniciativa con las tendencias educativas de la poca, en particular con la Escuela Lancasteriana, y asimismo analizar su trascendencia. El m todo utilizado consisti en una UHYLVLyQ GRFXPHQWDO ELEOLRJUi FD \\ KHPHURJUi FD VREUH HO WHPD FRQ HO PDUFR te rico de la historia institucional, la nueva historia de las ideas pedag gicas -a partir del planteamiento de Antonio Novoa-, y un modelo hermen utico que permiti profundizar en las caracter sticas de la primera Normal de Chiapas. A partir de la investigaci n se puede concluir que aunque la Normal solo funcion durante un corto tiempo, el m todo de ense anza de Mat as de C rdova que le dio fundamento tuvo una amplia trascendencia, pues se sigui empleando a lo largo del siglo XIX e incluso a principios del XX, tanto en el Estado de Chiapas como en otros lugares de M xico. De esta manera, la investigaci n aporta conocimientos relevantes sobre la historia de la educaci n en el Estado de Chiapas en la primera mitad del siglo XIX.

EVALUACIÓN TÉCNICA Y FINANCIERA DEL CULTIVO DE LECHUGA EN INVERNADERO, COMO ALTERNATIVA PARA INVIERNO

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Gerardo Martínez Carrillo

2015-07-01

Full Text Available Los cultivos que se producen en invernadero sin calefacción en el Altiplano de México y específicamente en Jerez de García Salinas, Zacatecas, no se adaptan en invierno, época en la que no se usan los invernaderos. Con el fin de encontrar una opción de producción que sea económicamente rentable en la época invernal para los productores de esta región, se evaluó la producción de lechuga (Lactuca sativa L. posterior a un cultivo de tomate. La investigación se realizó en un invernadero tipo multitunel con control pasivo del clima, el cultivo fue establecido en suelo. Se evaluó la combinación de tres variedades (Durango, Orejona PX y EZ-1 y tres densidades de plantación (20, 6.6 y 5 plantas m-² en la producción y la rentabilidad. El rendimiento con la variedad Durango fue superior en 1.22 y 1.18 veces a EZ-1 y Orejona PX, respectivamente; la densidad de 20 plantas m-2 presentó un rendimiento en kg m-2 de 2.1 y 2.7 veces mayor que con 6.6 y 5 plantas m-2, respectivamente; sin embargo, el peso por planta tuvo comportamiento inverso al peso por metro cuadrado; con cinco plantas m-2 el peso por planta fue mayor en 1.01 y 1.49 veces respecto a 6.6 y 20 plantas m-2, respectivamente. La relación beneficio/costo con el cultivo de tomate fue de 1.28 y con tomate + lechuga fue de 1.37, 1.30 y 1.29 con 20, 6.6 y 5 plantas m-2, respectivamente; por lo cual el cultivo de lechuga, principalmente con la variedad Durango y la densidad de 20 plantas m-2, es una opción recomendable.

Industrial subdivisions in Aguascalientes State [Mexico]: Valley Region, potential spaces for development in the 21st Century

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Héctor Daniel García Díaz

2014-04-01

Full Text Available The planning policies of the Mexican urban development oriented to the industrial activities implemented regionally and locally, have responded in different ways. The commitment to the sector led to the need to regulate urban growth and development as a substantial factor in achieving government strategies in the search for equitable sharing of national wealth and potential. The publication in 1976 of the General Law of Human Settlements born with this fundamental purpose. Excessive administrative burden of the Mexican social property and the need to insert in an increasingly globalizing economic activities led, in 1992 and 1994, respectively, the amendments to the Land Act and the signing of the Free Trade Agreement between North America, Canada, United States and Mexico. In the West Central Region, consisting of the metropolitan areas of Guadalajara, Zacatecas, San Luis Potosi, Queretaro, Guanajuato and Aguascalientes, spatial area in which a third of the country's inhabitants is based, and hosts the 100% extension territorial state of Aguascalientes, have been exploited discontinuously the natural and man-made resources available in the area. In the Valley of Aguascalientes, north-south strip of the state territory, have been authorized industrial subdivisions under plans and urban development programs that have accelerated or inhibited impulses, according to the vision and expectations of government power in turn; the different rhythms and changes of strategy applied to organize the disorder potential of the rural and urban environment express divergences in the reaches of consolidation and longed purposes. Research indicates and identifies the dynamics with which the last eight administrations of the Mexican State have acted in shaping the industrial potential of the Valley, which the south side hosts industrial city, Nissan I, Nissan II and Automotive Logistics Industrial Park, industrial settlements seeking to consolidate the region

PODA DE RAMAS MIXTAS Y RALEO DE FRUTOS: PRÁCTICAS CULTURALES INDEPENDIENTES EN DURAZNO 'VICTORIA'

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J. A. Zegbe-Domínguez

2007-01-01

Full Text Available El durazno requiere de la poda (en particular, el despunte de las ramas mixtas, DRM y el raleo de frutos (RF para una producción comercial de fruta. En la estación de crecimiento del 2004-05, se estudió la interacción entre DRM y RF en durazno cultivar 'Victoria' sobre el rendimiento, distribución de la fruta por tamaños, calidad del fruto, crecimiento de fruto y brote, además del peso especifico de la hoja. El experimento se llevó a cabo en el Campo Experimental Zacatecas con árboles de 20 años e injertados en patrones francos. Los factores estudiados fueron: el DRM y el RF, ambos factores con dos niveles; sin y con DRM y sin y con RF. El análisis estadístico no detectó interacción significativa (P 5.1 cm con relación a árboles testigo (sin DRM. El crecimiento del fruto y la longitud de brote fueron significativamente (P<0.05 mayores en comparación con los árboles testigo, pero tanto el rendimiento como la eficiencia productiva fueron reducidos (P<0.05 cuando se aplicó el DRM. El peso medio del fruto, el mesocarpio y el endocarpio fue significativamente mayor en frutos con DRM. Sin embargo, la firmeza, concentración de sólidos solubles totales, concentración de materia seca del fruto y el peso específico de hoja fue estadísticamente (P<0.05 igual entre frutos sin y con DRM. Los resultados sugieren que el durazno 'Victoria' puede prescindir del raleo de frutos, y por consiguiente, esto reduciría costos de producción. Ambos factores merecen ser estudiados en otros cultivares de durazno cuyas estructuras reproductivas tengan mayor habilidad en la utilización de foto asimilados.

La expulsión de los jesuitas de Portugal en la “era pombalina”

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Vivanco Díaz, Borja

2014-04-01

Full Text Available The Jesuits were expelled from Portugal in 1759 as a consequence of Regalian policy of enlightened despotism, which had been wholeheartedly accepted by Marquis of Pombal, prime-minister under the King Joseph I. Accusations of inciting the Guarani people to rise up against “The Treaty of the borders”, on the one hand, and of conspiring in the assassination attempt against King Joseph I, on the other, supported the decision to force the Jesuits into exile. However, neither allegation has been ever proven, rather they were the result of Pombal’s campaign against Saint Ignatius of Loyola’s order. The ultimate outcome of the expulsion of the Jesuits was the diminished influence of Catholic Church, thus encourating the introduction of new Enlightenment ideas in Portugal.Los jesuitas fueron expulsados de Portugal en 1759 como consecuencia de la política “regalista” del “despotismo ilustrado” y a la que se había adherido sin reservas el Marqués de Pombal, primer ministro del rey José I. Las acusaciones de instigar a los guaraníes a rebelarse contra el Tratado de los Límites, por un lado, y de conspirar en la organización del atentado frustrado contra la vida de José I, por otro, sirvieron de argumentos para provocar el exilio de la Compañía de Jesús. Sin embargo, ninguna de las dos acusaciones ha podido ser nunca probada y respondieron más bien a la campaña “pombalina” contra la orden de Ignacio de Loyola. Como resultado final, la expulsión de los jesuitas aminoró la influencia de la Iglesia Católica y favoreció la introducción en Portugal de las nuevas ideas de la Ilustración.

[The tobacco in the light of history and medicine].

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de Micheli, Alfredo

2015-01-01

Super trajectory is reported of tobacco from his first meeting with the European man October 15, 1492. This plant was known in Europe by the publications of the Sevillan physician Nicolas Monardes (1574), the relations of friar Andrés Thevet (1575) and the famous botanical treatise of Charles de l'Écluse (1605). The Swedish botanist Karl Linnaeus inclused tobacco plant in the family Solanaceae and deleted from this group other plants that were intermixed with it. Its botanical name (Nicotiana tabacum) derived from the surname of the French ambassador to Portugal, Jean Nicot of Villemain, who in 1560 sent it to the Queen Mother of France Cathérine de Medicis. The use of snuff quickly spread throughout Europe, were it became common in the seventeenth century. By the late eighteenth century in New Spain, in addition to cigars, cigarettes and due in packs of different content the tobacco is concocted and price. The preparation of the different presentations of snuff, tobacco made in factories in the capital and several provincial cities, originated in 1796 the creation of the first kindergartens for the children of those working in them. This thanks to the successful initiative of then viceroy Marquis of Branciforte. But contrary to the forecasts of Father F. J. Clavijero and Mrs. F. Calderón de la Barca, wife of the first Spanish diplomatic representative to the government of Mexico, the use of tobacco, with the passage of time, far from waning has been increasing in every social class. And now, more than men, women are smokers. Copyright © 2014 Instituto Nacional de Cardiología Ignacio Chávez. Published by Masson Doyma México S.A. All rights reserved.

In-hospital mortality risk factors for patients with cerebral vascular events in infectious endocarditis. A correlative study of clinical, echocardiographic, microbiologic and neuroimaging findings.

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González-Melchor, Laila; Kimura-Hayama, Eric; Díaz-Zamudio, Mariana; Higuera-Calleja, Jesús; Choque, Cinthia; Soto-Nieto, Gabriel I

2015-01-01

Cardiac complications in infectious endocarditis (IE) are seen in nearly 50% of cases, and systemic complications may occur. The aim of the present study was to determine the characteristics of inpatients with IE who suffered acute neurologic complications and the factors associated with early mortality. From January 2004 to May 2010, we reviewed clinical and imaging charts of all of the patients diagnosed with IE who presented a deficit suggesting a neurologic complication evaluated with Computed Tomography or Magnetic Resonance within the first week. This was a descriptive and retrolective study. Among 325 cases with IE, we included 35 patients (10.7%) [19 males (54%), mean age 44-years-old]. The most common underlying cardiac disease was rheumatic valvulopathy (n=8, 22.8%). Twenty patients survived (57.2%, group A) and 15 patients died (42.8%, group B) during hospitalization. The main cause of death was septic shock (n=7, 20%). There was no statistical difference among groups concerning clinical presentation, vegetation size, infectious agent and vascular territory. The overall number of lesions was significantly higher in group B (3.1 vs. 1.6, p=0.005) and moderate to severe cerebral edema were more frequent (p=0.09). Sixteen patients (45.7%) (12 in group A and 4 in group B, p=0.05) were treated by cardiac surgery. Only two patients had a favorable outcome with conservative treatment (5.7%). In patients with IE complicated with stroke, the number of lesions observed in neuroimaging examinations and conservative treatment were associated with higher in-hospital mortality. Copyright © 2014 Instituto Nacional de Cardiología Ignacio Chávez. Published by Masson Doyma México S.A. All rights reserved.

Thought–shape fusion and body image in eating disorders

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Jáuregui-Lobera I

2012-10-01

Full Text Available Ignacio Jáuregui-Lobera,1 Patricia Bolaños-Ríos,2 Inmaculada Ruiz-Prieto21Department of Nutrition and Bromatology, Pablo de Olavide University, Seville, Spain; 2Behavioral Sciences Institute, Seville, SpainPurpose: The aim of this study was to analyze the relationships among thought–shape fusion (TSF, specific instruments to assess body image disturbances, and body image quality of life in eating disorder patients in order to improve the understanding of the links between body image concerns and a specific bias consisting of beliefs about the consequences of thinking about forbidden foods.Patients and methods: The final sample included 76 eating disorder patients (mean age 20.13 ± 2.28 years; 59 women and seven men. After having obtained informed consent, the following questionnaires were administered: Body Appreciation Scale (BAS, Body Image Quality of Life Inventory (BIQLI-SP, Body Shape Questionnaire (BSQ, Eating Disorders Inventory-2 (EDI-2, State-Trait Anxiety Inventory (STAI, Symptom Checklist-90-Revised (SCL-90-R and Thought-Shape Fusion Questionnaire (TSF-Q.Results: Significant correlations were found between TSF-Q and body image-related variables. Those with higher scores in TSF showed higher scores in the BSQ (P < 0.0001, Eating Disorder Inventory – Drive for Thinness (EDI-DT (P < 0.0001, and Eating Disorder Inventory – Body Dissatisfaction (EDI-BD (P < 0.0001. The same patients showed lower scores in the BAS (P < 0.0001. With respect to the psychopathological variables, patients with high TSF obtained higher scores in all SCL-90-R subscales as well as in the STAI.Conclusion: The current study shows the interrelations among different body image-related variables, TSF, and body image quality of life.Keywords: cognitive distortions, quality of life, body appreciation, psychopathology, anorexia nervosa, bulimia nervosa

[The exercise training restores the heart rate variability in heart failure patients. A systematic review].

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Segovia, Victoria; Manterola, Carlos; González, Marcelo; Rodríguez-Núñez, Iván

Cardiovascular diseases are a significant cause of morbidity and mortality in the general population. In this sense, the autonomic imbalance is the cornerstone of the pathophysiology underlying the development of these diseases. The aim of this study was to determine the efficacy of exercise training on heart rate variability (HRV) in adult patients with chronic heart failure. A systematic literature review was conducted in electronic databases. The considered studies were randomised clinical trials, quasi-experimental studies with non-randomised control group, quasi-experimental studies with analysis of pre- and post- intervention, and crossover studies with randomly assigned training and non-training periods. The standardised mean differences were calculated between pre- and post-intervention in both the control and experimental group. Within-subject analysis of the control group showed no statistical significance in the standardised mean differences of HRV. In the experimental group, the standardised mean differences were positive for the root mean square of successive difference (+0.468±0.215; P=.032), high frequency band (HF) (0.934±0.256; P < .001) and low frequency band (LF) (< 0.415±0.096; P=.001). Moreover, the standardised mean difference was negative for LF/HF (-0.747±0.369, P=<.044). On the other hand, only 3 studies entered the comparative meta-analysis. The effect of exercise training was favourable for the experimental group in LF/HF (-2.21±95% CI: -3.83 to -0.60), HF, and LF. The exercise training was effective in increasing HRV and restoring the autonomic balance in patients with heart failure. Copyright © 2016 Instituto Nacional de Cardiología Ignacio Chávez. Publicado por Masson Doyma México S.A. All rights reserved.

Prevalencia de microsporidios y otros parásitos intestinales en pacientes con infección por VIH, Bogotá, 2001.

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Astrid Carolina Flórez

2003-09-01

Full Text Available Los parásitos intestinales oportunistas son protozoos que causan diarrea en pacientes infectados con el virus de inmunodeficiencia humana (VIH. Para determinar la prevalencia de microsporidios y otros parásitos oportunistas intestinales en pacientes infectados con el VIH con síntomas gastrointestinales y sistémicos, se estudiaron 115 pacientes que durante el 2001 consultaron al Hospital Santa Clara (33,0%, Clínica San Pedro-ISS (20,0%, Hospital Simón Bolívar (14,8%, San José (13,9%, Central de la Policía (6,1%, Compensar (5,2%, Liga de Lucha contra el Sida (2,6%, Hospital San Ignacio (2,6% y Hospital Militar (1,7%. La edad promedio fue de 36 años con un rango de 18 a 71 años; 14 eran mujeres y 101 hombres. La metodología empleada fue la recolección por paciente de dos muestras de materia fecal seriadas para montaje directo, concentración, coloración de Zielh Neelsen modificada para diagnóstico de coccidios intestinales y coloraciones de cromotropo modificada, Gramcromotropo y calcoflúor para diagnóstico de microsporidios. La prevalencia de oportunistas fue de 10,4 % para Cryptosporidium sp. En cuanto a microsporidios, se encontró que de 29% de positividad con cromotropo modificada como tamizaje, tan sólo 3,5% de las muestras se confirmaron como positivas con técnicas de calcoflúor y Gram-cromotropo. La prevalencia general de parásitos intestinales fue de 59,1%, de los cuales los principales patógenos fueron Blastocystis hominis con 25,2% y Entamoeba histolytica con 13%. En otros estudios con pacientes inmunosuprimidos por el VIH en Colombia, se han encontrado prevalencias de Cryptosporidium sp. menores que la hallada en esta investigación.

Safety and efficacy of fimasartan in Mexican patients with grade 1-2 essential hypertension.

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Cardona-Muñoz, Ernesto G; López-Alvarado, Agustín; Conde-Carmona, Ignacio; Sánchez-Mejorada, Gerardo; Pascoe-González, Sara; Banda-Elizondo, Ramiro G; García-Castillo, Armando; González-Gálvez, Guillermo; Velasco-Sánchez, Raúl G; Vidrio-Velázquez, Maricela; Leiva-Pons, José L; Villeda-Espinosa, Efraín; Guerra-López, Arturo; Esturau-Santalo, Ramón M

To evaluate efficacy and safety of 60mg and 120mg Fimasartan (FMS) alone or combined with 12.5mg hydrochlorothiazide (HCTZ) in a Mexican population. A six month, treat-to-target, open study was conducted on subjects with grade 1-2 hypertension. The subjects were initially treated with 60mg FMS once daily. In week 8, those with Diastolic Blood Pressure (DBP) <90mmHg continued on the same FMS dose during the rest of the study, while those with DBP ≥90mmHg were randomised to either 120mg FMS or 60mg FMS + 12.5mg HCTZ once daily. In week 12, randomised subjects with DBP ≥90mmHg received 120mg FMS+12.5mg HCTZ, while those achieving target continued with their assigned treatment until the end of the study. FMS 60mg (n=272) decreased both DBP and Systolic Blood Pressure (SBP) by 11.3±8.9 (p<.0001) and 16.0±14.1 (p<.0001)mmHg, respectively, with 75.4% of subjects reaching the treatment target. Subjects assigned to FMS 120mg, FMS 60mg+HCTZ 12.5mg, or FMS 120mg+HCTZ 12.5mg once daily, showed significant reductions in DBP and SBP with their assigned treatment. At the end of the study, 237/272 subjects (87.1%) achieved a DBP<90mmHg and an SBP<140mmHg. The most frequently reported adverse reactions included headache (3.7%), dry mouth (1.1%), transient liver enzyme increase (1.1%), and dizziness (0.7%). Fimasartan is safe and effective in Mexican subjects with grade 1-2 essential hypertension. Copyright © 2017 Instituto Nacional de Cardiología Ignacio Chávez. Publicado por Masson Doyma México S.A. All rights reserved.

[Mechanical circulatory support in pediatrics. Experience at the Dr. Juan P. Garrahan Pediatric Hospital. Argentina].

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Moreno, Guillermo E; Magliola, Ricardo; Pilán, María Luisa; Althabe, María; Balestrini, María; Lenz, Ana Miriam; Krysnki, Mariela; Rodríguez, Ricardo; Salgado, Gladys; Martin, Analía; Cardoso, Hugo; Ruffa, Pablo; Cornelis, Carlos Javier; Barreta, Jorge; García Delucis, Pablo

2014-01-01

Mechanical circulatory support provides oxygen to the tissues in patients with cardiac and/or respiratory reversible disease refractory to conventional treatments. The aim of this study is to show our initial results of mechanical circulatory support in children with heart disease. Retrospective cohort between March 2006 and March 2012. Demographic data (age, sex, weight, cardiac diagnosis), surgery (technique, pump, aortic cross clamping time) and mechanical circulatory support (type of assistance, indication, duration, complications and outcome) were collected. Thirty-three patients were supported (1.3% of all surgeries), extracorporeal membrane oxygenation 32 cases and one ventricular assist device. The median age 7.4 months (one day-18 years) and weight 6kg (2.3-75). The most frequent cardiac malformations supported were the transpositions of the great arteries associated with other anomalies and the corrected transpositions (ventricular inversion or double discordance). The most common reason for admission was post-cardiotomy biventricular dysfunction. Twenty-eight patients were supported in the postoperative period, 4 in the preoperative period and in one with myocarditis. Median days of support were 3 days (1-10). The most common complications were infection (21%), bleeding (21%). Elective decannulation was achieved in 94% of cases. Hospital discharge survival: 52%. The mechanical circulatory support in our institution is a safe and standard procedure. We have been using it in a small number of cases with a similar survival to that reported internationally. This complex procedure is widely justified because it allows for the recovery of more than half of the patients who otherwise would have died. Copyright © 2013 Instituto Nacional de Cardiología Ignacio Chávez. Published by Masson Doyma México S.A. All rights reserved.

Académico Jorge Segura Vargas

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Alfredo Jácome Roca

2011-07-01

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El doctor Jorge Segura Vargas nació en Duitama, Boyacá, el 14 de agosto de 1924. Ingresó como estudiante fundador en 1942 a la naciente escuela de medicina de la Javeriana, la segunda facultad en Bogotá, que contó con no pocos enemigos que casi acaban con ella. El apoyo de algunos distinguidos profesores de la época –que además firmaron el acta de fundación- el tesón del Padre Félix Restrepo, a la sazón Rector Magnífico, y la perseverancia de alumnos como Segura, permitió que este finalizara sus estudios en 1947 en la primera promoción y se graduara en 1950 con la tesis “Vesícula no visible, intubación duodenal”. Con el título no terminaron los avatares, por la resistencia que generaban los egresados de la nueva escuela médica. Sin embargo, Jorge y algunos compañeros lograron ingresar al Hospital San José de Bogotá, donde llegaron a ser muy apreciados. El entrenamiento lo logró realizar en este tradicional centro hospitalario de la capital, con el profesor Hernando Anzola Cubides. Era Anzola un distinguido académico, miembro de la Sociedad de Cirugía de Bogotá, quien creó una importante escuela quirúrgica en la capital.

Fue Alumno Fundador y Profesor Distinguido de la Facultad de Medicina de la Universidad Javeriana, Jefe del Departamento Quirúrgico del Hospital San Ignacio, donde dejó un legado de habilidades y conocimientos quirúrgicos, bonhomía y lealtad con la Facultad, que acompañó de principio a fin, en las buenas y en las malas.

Parientes, amigos y patronos. Red, movilidad y reproducción social en la burguesía y la elite de poder a finales del antiguo régimen (Albacete, 1750-1808

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Cosme Jesús GÓMEZ CARRASCO

2009-10-01

Full Text Available Stvdia histórica: Historia Moderna, 2007, vol. 29, pp.279-305 José Ignacio RUIZ-RODRÍGUEZ confesionalización; historiografía; edad moderna=Confessionalization; Historiography; Modern Age 14.00 Normal 0 21 false false false ES X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Tabla normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin-top:0cm; mso-para-margin-right:0cm; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0cm; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi; mso-fareast-language:EN-US;} Este trabajo pretende analizar las relaciones sociales de cuatro familias pertenecientes a la elite de poder y a la burguesía en una población en crecimiento como es Albacete a finales del Antiguo Régimen. Nuestra intención ha sido acercarnos a todas las acciones que estos perso­najes protagonizan en protocolos, pleitos, y a la imagen que de ellos nos dan censos, padrones y relaciones de riqueza. Todo ello se ha realizado a través del estudio de sus estrategias familiares y de la red social. Con ello se ha descubierto cómo el parentesco y el clientelismo juegan un papel clave en sus procesos de reproducción y movilidad social, así como en los cambios institucionales que empezaron a vislumbrarse a finales de la Edad Moderna.

[Cardiorenal syndrome type 1 in the intensive coronary care unit of the Hospital Nacional Arzobispo Loayza].

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Preza, Paul M; Hurtado, Abdías; Armas, Victoria; Cárcamo, César P

2015-01-01

This study sought to evaluate the incidence of cardiorenal syndrome (CRS) type 1 in a coronary care unit and its association with hospital mortality within 30 days of admission, as well as other epidemiological characteristics. The medical records of all the patients who were hospitalized with the diagnosis of acute heart failure in a 4-year period were reviewed. CRS type 1 was characterized by the presence of acute heart failure and an elevation of serum creatinine ≥0.3mg/dL in comparison to the baseline creatinine calculated by the MDRD75 equation and/or the elevation of ≥50% of the admission serum creatinine within a 48 h period. The incidence of CRS type 1 was 27.87%, 95% CI: 20.13-36.71 (34 of 122). There was a higher frequency of CRS type 1 in those patients who were admitted with the diagnosis of cardiogenic shock (adjusted RR 2.02, 95% CI: 1.20-3.93, p=0.0378) and in those with higher hemoglobin levels (p=0.0412). The CRS type 1 was associated with an increase of 30-day mortality (HR: 4.11, 95% CI: 1.20-14.09, p=0.0244). The incidence of CRS type 1 in the coronary care unit found in our study is similar to those found in foreign studies. The history of stroke and the higher values of hemoglobin were associated with a higher incidence of cardiorenal syndrome type 1. Patients with CRS type 1 had a higher hospital mortality within 30 days of admission. Copyright © 2014 Instituto Nacional de Cardiología Ignacio Chávez. Published by Masson Doyma México S.A. All rights reserved.

Desafios atuais e antigas sutilezas nas práticas da psicologia social comunitária

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María de Fátima Quintal

2016-05-01

Full Text Available O texto abordará brevemente a história da psicologia nos países da América Latina e destaca a maior visibilidade das praticas da psicologia em comunidade. Isso acontece porque nos últimos anos os governos neoliberais incluíram em suas agendas de políticas públicas a participação de profissionais comprometidos com os programas comunitários. São apresentados também os fundamentos principais que são guias importantes para a realização das práticas em comunidade. Esses fundamentos apóiam-se em aportes de Ignacio Martin-Baró, Silvia Lane e da filosofia de Paulo Freire. Entre eles estão os processos de conscientização e participação, e a recuperação da memória histórica dos grupos e comunidades. É feita uma crítica ao fato do trabalho ser considerado inédito por causa principalmente de aspectos superficiais, enquanto que os seus paradigmas permanecem os mesmos. Realiza-se uma comparação da psicologia social comunitaria em seu início e na atualidade, e para isso a análise utiliza as dimensões da intervenção comunitária e como isso se materializa na prática dos trabalhos em comunidade. Em continuidade, faz-se uma discussão sobre os tipos diferenciados da participação que acontecem na atualidade, e também sobre o uso generalizado e superficial de conceitos importantes para o campo comunitário. Finaliza-se com uma discussão sobre a possibilidade de mudança dos princípios e compromisso da psicologia social comunitária.

Primary closure in colon trauma.

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Salinas-Aragón, Luis Enrique; Guevara-Torres, Lorenzo; Vaca-Pérez, Enrique; Belmares-Taboada, Jaime Arístides; Ortiz-Castillo, Fátima de Guadalupe; Sánchez-Aguilar, Martín

2009-01-01

Primary repair of colon injuries is an accepted therapeutic option; however, controversy persists regarding its safety. Our objective was to report the evolution and presence of complications in patients with colon injury who underwent primary closure and to determine if the time interval (>6 h), degree of injury, contamination, anatomic site injured, PATI (Penetrating Abdominal Trauma Index) >25, and the presence of other injuries in colon trauma are associated with increased morbidity and mortality. This was a prospective, observational, longitudinal and descriptive study conducted at the Central Hospital "Dr. Ignacio Morones Prieto," San Luis Potosí, Mexico, from January 1, 2003 to December 31, 2007. We included patients with abdominal trauma with colon injury subjected to surgical treatment. chi(2) was used for basic statistical analysis. There were 481 patients with abdominal trauma who underwent surgery; 77(16.1%) had colon injury. Ninety percent (n = 69) were treated in the first 6 h; 91% (n = 70) were due to penetrating injuries, and gunshot wound accounted for 48% (n = 37). Transverse colon was the most frequently injured (38%) (n = 29). Grade I and II injuries accounted for 75.3% (n = 58). Procedures included primary repair (76.66 %) (n = 46); resection with anastomosis (8.3%) (n = 5); and colostomy (15%) (n = 9). Associated injuries were present in 76.6% (n = 59). There was some degree of contamination in 85.7% (n = 66); 82.8% (58) had PATI colon injury. Primary repair is a safe procedure for treatment of colon injuries. Patients with primary repair had lower morbidity (p <0.009). Surgery during the first 6 h (p <0.006) and in hemodynamically stable patients (p <0.014) had a lower risk of complications.

[Sigmoid septum: A variant of the ventricular hypertrophy or of the hypertrophic cardiomyopathy?].

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Gentille-Lorente, Delicia; Salvadó-Usach, Teresa

2016-01-01

Sigmoid septum and hypertrophic cardiomyopathy presenting with left ventricular hypertrophy and, although they appear to be different entities, often involve problems in the differential diagnosis. This study was carried out to assess the prevalence and characteristics of the echocardiographic sigmoid septum and its differential findings regarding hypertrophic cardiomyopathy. Descriptive, observational and prospective study. A total of 1,770 patients were studied by echocardiography. Sigmoid septum (focal and isolated hypertrophy of the basal interventricular septum≥13mm in men and ≥12mm in women, exceeding ≥50% of the median septum thickness) was classified as «Type 1» (≤14mm) and «Type 2» (≥15mm). There were 59 cases of sigmoid septum (prevalence of 3.3%): 26 (1.5%) patients with type 1 (50% male) and 33 (1.9%) patients with type 2 (72.7% male); there were 25 (1.4%) cases of hypertrophic cardiomyopathy (76% male). The group with type 2 sigmoid septum differed from hypertrophic cardiomyopathy in: was older (73±10.5years; P<.0001), with more hypertension (84.8%; P<.0001), lower glomerular filtering (73.3±21.4ml/min; P=.007), lower repolarization abnormalities (18.2%; P=.004) and Cornell index (in men, 22.2±11mm; P=.041), more diastolic dysfunction (75%; P=.0089) and in ventricular morphology and fibrosis location in magnetic resonance. Regarding the hypertrophic cardiomyopathy, patients with type 2 sigmoid septum are older and generally hypertensive; otherwise, often they have no clear differences in their clinical, electrocardiographic or echocardiographic characteristics. Therefore, cardiac resonance is helpful in the differential diagnosis. Copyright © 2016 Instituto Nacional de Cardiología Ignacio Chávez. Published by Masson Doyma México S.A. All rights reserved.

Body image and quality of life in a Spanish population

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Ignacio Jáuregui Lobera

2011-01-01

Full Text Available Ignacio Jáuregui Lobera1, Patricia Bolaños Ríos21Department of Nutrition and Bromatology, Pablo de Olavide University, Seville, Spain; 2Behavior Science Institute, Seville, SpainPurpose: The aim of the current study was to analyze the psychometric properties, factor structure, and internal consistency of the Spanish version of the Body Image Quality of Life Inventory (BIQLI-SP as well as its test–retest reliability. Further objectives were to analyze different relationships with key dimensions of psychosocial functioning (ie, self-esteem, presence of psychopathological symptoms, eating and body image-related problems, and perceived stress and to evaluate differences in body image quality of life due to gender.Patients and methods: The sample comprised 417 students without any psychiatric history, recruited from the Pablo de Olavide University and the University of Seville. There were 140 men (33.57% and 277 women (66.43%, and the mean age was 21.62 years (standard deviation = 5.12. After obtaining informed consent from all participants, the following questionnaires were administered: BIQLI, Eating Disorder Inventory-2 (EDI-2, Perceived Stress Questionnaire (PSQ, Self-Esteem Scale (SES, and Symptom Checklist-90-Revised (SCL-90-R.Results: The BIQLI-SP shows adequate psychometric properties, and it may be useful to determine the body image quality of life in different physical conditions. A more positive body image quality of life is associated with better self-esteem, better psychological wellbeing, and fewer eating-related dysfunctional attitudes, this being more evident among women.Conclusion: The BIQLI-SP may be useful to determine the body image quality of life in different contexts with regard to dermatology, cosmetic and reconstructive surgery, and endocrinology, among others. In these fields of study, a new trend has emerged to assess body image-related quality of life.Keywords: body appreciation, wellbeing, self-esteem, social

[Percutaneous coronary intervention of unprotected left main coronary compared with coronary artery bypass grafting; 3 years of experience in the National Institute of Cardiology, Mexico].

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López-Aguilar, Carlos; Abundes-Velasco, Arturo; Eid-Lidt, Guering; Piña-Reyna, Yigal; Gaspar-Hernández, Jorge

The best revascularisation method of the unprotected left main artery is a current and evolving topic. A total of 2439 percutaneous coronary interventions (PCI) were registered during a 3-year period. The study included all the patients with PCI of the unprotected left main coronary (n=48) and matched with patients who underwent coronary artery bypass graft (CABG) (n=50). Major adverse cerebral and cardiac events (MACCE) were assessed within the hospital and in outpatients during a 16 month follow up. The cardiovascular risk was greater in the PCI group; logEuroSCORE 16±21 vs. 5±6, P=.001; clinical Syntax 77±74 vs 53±39, P=.04. On admission, the PCI group of patients had a higher frequency of ST segment elevation myocardial infarction (STEMI) and cardiogenic shock. The MACCE were similar in both groups (14% vs. 18%, P=.64). STEMI was less frequent in the PCI group (0% vs. 10%, P=.03). Cardiovascular events were lower in the PCI group (2.3% vs. 18%, P=.01), and there was a decrease in general and cardiac mortality (2.3% vs. 12%, P=.08 y 2.3% vs. 8%, P=.24), on excluding the patients with cardiogenic shock as a presentation. MACCE were similar in both groups in the out-patient phase (15% vs. 12%, P=.46). Survival without MACCE, general and cardiac death were comparable between groups (log rank, P=.38, P=.44 and P=.16, respectively). Even though the clinical and peri-procedural risk profile of the PCI patients were higher, the in-hospital and out-hospital efficacy and safety were comparable with CABG. Copyright © 2016 Instituto Nacional de Cardiología Ignacio Chávez. Publicado por Masson Doyma México S.A. All rights reserved.

Compression of the right coronary artery by an aortic pseudoaneurysm after infective endocarditis: an unusual case of myocardial ischemia

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Lacalzada-Almeida J

2017-12-01

Full Text Available Juan Lacalzada-Almeida,1 Alejandro De la Rosa-Hernández,1 María Manuela Izquierdo-Gómez,1 Javier García-Niebla,2 Iván Hernández-Betancor,1 Juan Alfonso Bonilla-Arjona,3 Antonio Barragán-Acea,1 Ignacio Laynez-Cerdeña1 1Cardiology Department, Hospital Universitario de Canarias, Tenerife, 2Health services from the Health Area of El Hierro, Valle del Golfo Health Center, El Hierro, 3Radiology Department, Hospital Universitario de Canarias, Tenerife, Spain Abstract: A 61-year-old male with a prosthetic St Jude aortic valve size 24 presented with heart failure symptoms and minimal-effort angina. Eleven months earlier, the patient had undergone cardiac surgery because of an aortic root dilatation and bicuspid aortic valve with severe regurgitation secondary to infectious endocarditis by Coxiela burnetii and coronary artery disease in the left circumflex coronary artery. Then, a prosthesis valve and a saphenous bypass graft to the left circumflex coronary artery were placed. The patient was admitted to the Cardiology Department of Hospital Universitario de Canarias, Tenerife, Spain and a transthoracic echocardiography was performed that showed severe paraprosthetic aortic regurgitation and an aortic pseudoaneurysm. The 64-slice multidetector computed tomography confirmed the pseudoaneurysm, originating from the right sinus of Valsalva, with a compression of the native right coronary artery and a normal saphenous bypass graft. On the basis of these findings, we performed surgical treatment with a favorable postoperative evolution. In our case, results from complementary cardiac imaging techniques were crucial for patient management. The multidetector computed tomography allowed for a confident diagnosis of an unusual mechanism of coronary ischemia. Keywords: pseudoaneurysm, infective endocarditis, myocardial ischemia, aortic valve prosthesis

CARACTERIZACIÓN AGRONÓMICA, CALIDAD INDUSTRIAL Y NUTRICIONAL DE MAÍZ PARA EL TRÓPICO MEXICANO

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Mauro Sierra-Mac\\u00EDas

2010-01-01

Full Text Available El objetivo de este trabajo fue determinar el valor agronómico y nutricional de varie dades e híbridos de maíz en Veracruz, México, durante el ciclo primavera verano 2006. Se validaron híbridos y varie dades de maíz normal y con alta calidad de proteína en Cotaxtla, Mata de Agua, Tlalixcoyan, Ignacio de la Llave, Martínez de la Torre y Rodríguez Clara, en Veracruz, México. Se utilizó un diseño de bloques completos al azar con dos repe ticiones y parcelas de ocho surcos de 25 m de largo con una densidad de 62 500 semillas/ha. Del análisis de varianza combinado, se encontró diferencia altamente significativa para Ge notip os (G, Localidades (L y la interacción GxL. Los genotip os sobresalie ntes, por su rendimie nto de grano y otras características agronómicas fueron HQ4, H-520, HQ3 y HQ1 con 5,42; 5,38; 5,13 y 5,06 t/ha, respectivamente. Los híbridos con mejor valor nutricional de grano blanco fueron HQ1, HQ3 y HQ4, y la varie dad V-556AC , de grano amarillo, calidad basada en características físicas, químicas, de nixtamal, la masa y las tortillas, así como los aminoácidos lisina y trip tofano, en endospermo, grano entero y tortillas. Estos maíces cumplen con las especificaciones de la norma mexicana para maíces destinados al proceso de nixtamalización. El HQ1 produjo las mejores tortillas, y el híbrido HQ4, se consideró apropiado para la industria de la harina nixtamalizada.

[Intelligent systems tools in the diagnosis of acute coronary syndromes: A systemic review].

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Sprockel, John; Tejeda, Miguel; Yate, José; Diaztagle, Juan; González, Enrique

2017-03-27

Acute myocardial infarction is the leading cause of non-communicable deaths worldwide. Its diagnosis is a highly complex task, for which modelling through automated methods has been attempted. A systematic review of the literature was performed on diagnostic tests that applied intelligent systems tools in the diagnosis of acute coronary syndromes. A systematic review of the literature is presented using Medline, Embase, Scopus, IEEE/IET Electronic Library, ISI Web of Science, Latindex and LILACS databases for articles that include the diagnostic evaluation of acute coronary syndromes using intelligent systems. The review process was conducted independently by 2 reviewers, and discrepancies were resolved through the participation of a third person. The operational characteristics of the studied tools were extracted. A total of 35 references met the inclusion criteria. In 22 (62.8%) cases, neural networks were used. In five studies, the performances of several intelligent systems tools were compared. Thirteen studies sought to perform diagnoses of all acute coronary syndromes, and in 22, only infarctions were studied. In 21 cases, clinical and electrocardiographic aspects were used as input data, and in 10, only electrocardiographic data were used. Most intelligent systems use the clinical context as a reference standard. High rates of diagnostic accuracy were found with better performance using neural networks and support vector machines, compared with statistical tools of pattern recognition and decision trees. Extensive evidence was found that shows that using intelligent systems tools achieves a greater degree of accuracy than some clinical algorithms or scales and, thus, should be considered appropriate tools for supporting diagnostic decisions of acute coronary syndromes. Copyright © 2017 Instituto Nacional de Cardiología Ignacio Chávez. Publicado por Masson Doyma México S.A. All rights reserved.

PCSK9 inhibitors in the current management of atherosclerosis.

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Whayne, Thomas F

The history of proprotein convertase subtilisin/kexin type 9 (PCSK9) in medical science is fascinating and the evolution of knowledge of its function has resulted in new medications of major importance for the cardiovascular (CV) patient. PCSK9 functions as a negative control or feedback for the cell surface receptors for low-density lipoprotein including its component of cholesterol (LDL-C). The initial and key findings were that different abnormalities of PCSK9 can result in an increase or a decrease of LDL-C because of more or less suppression of cell surface receptors. These observations gave hints and awoke interest that it might be possible to prepare monoclonal antibodies to PCSK9 and decrease its activity, after which there should be more active LDL-C cell receptors. The rest is a fascinating story that currently has resulted in two PCSK9 inhibitors, alirocumab and evolocumab, which, on average, decrease LDL-C approximately 50%. Nevertheless, if there are no contraindications, statins remain the standard of prevention for the high-risk CV patient and this includes both secondary and primary prevention. The new inhibitors are for the patient that does not attain the desired target for LDL-C reduction while taking a maximum statin dose or who does not tolerate any statin dose whatsoever. Atherosclerosis can be considered a metabolic disease and the clinician needs to realize this and think more and more of CV prevention. These inhibitors can contribute to both the stabilization and regression of atherosclerotic plaques and thereby avoid or delay major adverse cardiac events. (United States). Copyright © 2016 Instituto Nacional de Cardiología Ignacio Chávez. Publicado por Masson Doyma México S.A. All rights reserved.

Liderazgo en los directivos de educación primaria

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Johel Furguerle Rangel

2016-05-01

Full Text Available El presente estudio tuvo como objetivo determinar las características de liderazgo del directivo en las instituciones educativas de la Parroquia Juan Ignacio Montilla, municipio Valera, estado Trujillo, el cual se sustenta teóricamente en los planteamientos teóricos de Robbins (2008, Martí (2008, Cáceres (2006, Romero (2006, Ramírez (2009, Moreno (2007, entre otros. La investigación fue de tipo descriptiva con diseño no experimental de campo, teniendo como población a ocho directivos y 65 docentes cuya sumatoria es igual a 73 sujetos. La recolección de información se realizó por medio de la técnica de la encuesta, bajo la presentación de un cuestionario con preguntas cerradas con una escala de estimación, el cual fue validado por un panel de expertos y alcanzada la confiabilidad por medio del coeficiente de Cronbach, cuyo valor fue 0,91. Una vez aplicado el instrumento se procedió a realizar el análisis estadístico por medio de la frecuencia y el porcentaje; ello condujo a identificar que el directivo no desarrolla plenamente las características de liderazgo, comunicación, motivación o apertura al cambio; por ello, se puede concluir que la interacción con el personal se ve afectada por barreras comunicacionales, escasamente se reconoce e incentiva la labor desarrollada por los docentes y demás miembros de la comunidad; asimismo, existe una resistencia por parte del directivo a asumir las políticas educativas, lo cual impide aunar esfuerzos para posicionar a las instituciones hacia las transformaciones en el quehacer escolar propuestas por el Ministerio del Poder Popular para la Educación.

[Experience with the use of the bio-active stent coated with titanium nitric oxide compared with zotarolimus-eluting stent: experience of a unit medical high specialty].

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Garcia-Gutierrez, Juan C; Palacios-Rodríguez, Juan M; Cordova-Correa, Horacio G; Becerra-Laguna, Carlos A; López-López, Hugo A; Salinas Aragón, Miguel A; García-Bonilla, Jorge

2016-01-01

The use of coronary stents in coronary angioplasty has evolved dramatically in its design, type materials, polymers, and a variety of drugs, the use of coronary stents covered nitric oxide have shown satisfactory results in practice, however compared to the results reported drug-eluting stents, there is little information. The aim of this study was to compare clinical outcomes of a stainless steel stent Bioactive nitric oxide coated titanium (BAS) and a drug-eluting stent zotarolimus (DES) in daily clinical practice. A retrospective, analytical, descriptive and comparative study aimed at evaluating the safety and efficacy of two devices with different characteristics in our population. The primary endpoints were: death, acute infarction (AMI), and re intervention injury Treated (RLT). A total of 759 patients were included in the study which was performed angioplasty to a single vessel. Were divided into two arms 382 with DES and 377 patients with BAS, the one year follow up was carried in 95%. After this follow-up period, primary points (cardiovascular death, myocardial infarction, TLR and stent thrombosis) for arm DES vs BAS; 9.5% vs 8.5% P=NS but with shorter periods of dual antiplatelet therapy for arm BAS 6.9±4.1 vs 11.1±2.5 months DES P=.0001. The results were independent of the clinical syndrome of presentation. After one year of follow no statistically significant difference in major clinical events, there was a trend in favour of BAS vs SM with respect to revascularization of the target lesion without reaching statistical significance. Copyright © 2015 Instituto Nacional de Cardiología Ignacio Chávez. Published by Masson Doyma México S.A. All rights reserved.

Derechos humanos constituyentes, luchas sociales y cotidianas e historización

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David Sánchez Rubio

2014-10-01

Full Text Available Los derechos humanos tienen en su reclamación a uno de sus componentes más importantes. Se puede exigir un derecho negado pero ya reconocido por el ordenamiento jurídico de un estado constitucional de derecho o reivindicar un derecho nuevo que no está recogido por el sistema normativo de los estados-nacionales que incorporan internamente a los sistemas internacionales. Las causas de que se reclamen derechos residen en algún tipo de agravio, afrenta o perjuicio ocasionado a un ser humano particular o a un grupo o colectivo de seres humanos. Ese daño puede ser individual y puntual, producido por un acto concreto y determinado, o puede ser provocado por una relación desigual de poder más estabilizada, es decir, por una estructura o un sistema de dominación que genera la discriminación, la opresión, la exclusión y/o la muerte de quienes lo sufren. Por esta razón, para Ignacio Ellacuría la mejor forma y el método más adecuado para percibir un derecho humano real y dinámico es el de negar aquella condición de esclavitud, debilidad y opresión que viola una dimensión vital y existencia de los seres humanos que se traduce y significa en términos de dignidad, de libertad o de derechos, ya que este estado o condición negadora es la que ofrece un dato temático primario que sirve de fuente no solo de análisis, sino, principalmente, para poder ha-cer justicia enfrentándola y, de modo dialéctico, anulándola, mediante su superación crítica y transformadora.

Hábitos dietéticos, peso elevado, consumo de tabaco, lipidemia e hipertensión arterial en adolescentes

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Remigio Rafael Gorrita Pérez

Full Text Available Introducción: aunque se conoce que la hipertensión arterial puede tener su origen desde la infancia y adolescencia, en esta etapa no es tan bien valorada como en el adulto. Objetivo: determinar la incidencia de hipertensión arterial en escolares adolescentes, y su relación con hábitos dietéticos, peso elevado, hábito de fumar e hiperlipidemias. Métodos: se realizó un estudio prospectivo y analítico en 532 adolescentes entre 12 y 14 años, de ambos sexos, de la Escuela Secundaria Básica Urbana "Ignacio Agramonte y Loynaz" de San José de las Lajas, durante el curso 2012-2013. Se estableció el riesgo relativo o razón de incidencia para los factores estudiados y la hipertensión arterial. Resultados: se identificaron cifras elevadas de tensión arterial en 21 estudiantes (3,9 %. El 18,6 % eran obesos y sobrepesos, solo el 5,45 % mostró una frecuencia óptima de alimentación posiblemente saludable. Casi la totalidad de obesos y sobrepesos se encontraban entre los que tenían una alimentación no saludable o con riesgo de no serlo. El 95,2 % de los hipertensos recibían alimentación no saludable, o con riesgo de no serlo. El 5 % practicaba el hábito de fumar. El 19,0 y el 14,3 % de los hipertensos tenían cifras elevadas de colesterol y triglicéridos respectivamente, y el 16,1 % de ambos estaban elevados en los obesos. Conclusiones: se estableció la incidencia de hipertensión arterial en adolescentes de una escuela secundaria básica. Se identificaron los hábitos dietéticos inadecuados, el peso elevado y el consumo de tabaco.

Multicomponent exercise decreases blood pressure, heart rate and double product in normotensive and hypertensive older patients with high blood pressure.

Science.gov (United States)

Coelho-Júnior, Hélio José; Asano, Ricardo Yukio; Gonçalvez, Ivan de Oliveira; Brietzke, Cayque; Pires, Flávio Oliveira; Aguiar, Samuel da Silva; Feriani, Daniele Jardim; Caperuto, Erico Chagas; Uchida, Marco Carlos; Rodrigues, Bruno

2018-02-26

The present study aimed to investigate the effects of a 6-month multicomponent exercise program on blood pressure, heart rate, and double product of uncontrolled and controlled normotensive and hypertensive older patients. The study included 183 subjects, 97 normotensives, of which 53 were controlled normotensives (CNS), and 44 uncontrolled normotensives (UNS), as well as 86 hypertensives, of which 43 were controlled hypertensives (CHS), and 43 uncontrolled hypertensives (UHS). Volunteers were recruited and blood pressure and heart rate measurements were made before and after a 6-month multicomponent exercise program. The program of physical exercise was performed twice a week for 26 weeks. The physical exercises program was based on functional and walking exercises. Exercise sessions were performed at moderate intensity. The results indicated that UHS showed a marked decrease in systolic (-8.0mmHg), diastolic (-11.1mmHg), mean (-10.1mmHg), and pulse pressures, heart rate (-6.8bpm), and double product (-1640bpmmmHg), when compared to baseline. Similarly, diastolic (-5.5mmHg) and mean arterial (-4.8mmHg) pressures were significantly decreased in UNS. Concomitantly, significant changes could be observed in the body mass index (-0.9kg/m 2 ; -1.5kg/m 2 ) and waist circumference (-3.3cm; only UHS) of UNS and UHS, which may be associated with the changes observed in blood pressure. In conclusion, the data of the present study indicate that a 6-month multicomponent exercise program may lead to significant reductions in blood pressure, heart rate, and double product of normotensive and hypertensive patients with high blood pressure values. Copyright © 2018 Instituto Nacional de Cardiología Ignacio Chávez. Publicado por Masson Doyma México S.A. All rights reserved.

On New Spain and Mexican medicinal botany in cardiology.

Science.gov (United States)

de Micheli-Serra, Alfredo Alessandro; Izaguirre-Ávila, Raúl

2014-01-01

Towards the middle of the XVI century, the empirical physician Martín de la Cruz, in New Spain, compiled a catalogue of the local medicinal herbs and plants, which was translated into Latin by Juan Badiano, professor at the Franciscan college of Tlatelolco. On his side, Dr. Francisco Hernández, the royal physician (protomédico) from 1571 until 1577, performed a systematic study of the flora and fauna in this period. His notes and designs were not published at that time, but two epitomes of Hernández' works appeared, respectively, in 1615 in Mexico and in 1651 in Rome. During the XVIII century, two Spanish scientific expeditions arrived to these lands. They were led, respectively, by the Spanish naturalist Martín Sessé and the Italian seaman, Alessandro Malaspina di Mulazzo, dependent from the Spanish Government. These expeditions collected and carried rich scientific material to Spain. At the end of that century, the Franciscan friar Juan Navarro depicted and described several Mexican medicinal plants in the fifth volume of his botanic work. In the last years of the colonial period, the fundamental works of Humboldt and Bonpland on the geographic distribution of the American plants were published. In the modern age, the first research about the Mexican medicinal botany was performed in the laboratory of the Instituto Médico Nacional [National Medical Institute] under the leadership of Dr. Fernando Altamirano, who started pharmacological studies in this country. Later, trials of cardiovascular pharmacology were performed in the small laboratories of the cardiological unit at the General Hospital of Mexico City, on Dr. Ignacio Chávez' initiative. The Mexican botanical-pharmacological tradition persists alive and vigorous at the Instituto Nacional de Cardiología and other scientific institutions of the country.

Designing a mini subcritical nuclear reactor

International Nuclear Information System (INIS)

Escobedo G, C. R.; Vega C, H. R.; Davila H, V. M.

2015-10-01

In this work the design of a mini subcritical nuclear reactor formed by means of light water moderator, uranium as fuel, and isotopic neutron source of 239 PuBe was carried out. The design was done by Monte Carlo methods with the code MCNP5 in which uranium was modeled in an array of concentric holes cylinders of 8.5, 14.5, 20.5, 26.5, 32.5 cm of internal radius and 3 cm of thickness, 36 cm of height. Different models were made from a single fuel cylinder (natural uranium) to five. The neutron source of 239 PuBe was situated in the center of the mini reactor; in each arrangement was used water as moderator. Cross sections libraries Endf/Vi were used and the number of stories was large enough to ensure less uncertainty than 3%. For each case the effective multiplication factor k e -f f , the amplification factor and the power was calculated. Outside the mini reactor the ambient dose equivalent H (10) was calculated for different cases. The value of k eff , the amplification factor and power are directly related to the number of cylinders of uranium as fuel. Although the average energy of the neutrons 239 PuBe is between 4.5 and 5 MeV in the case of the mini reactor for a cylinder, in the neutron spectrum the presence of thermal neutrons does not exist, so that produced fissions are generated with fast neutrons, and in designs of two and three rings the neutron spectra shows the presence of thermal neutrons, however the fissions are being generated with fast neutrons. Finally in the four and five cases the amount of moderator is enough to thermalized the neutrons and thereby produce the fission. The maximum value for k eff was 0.82; this value is very close to the assembly of Universidad Autonoma de Zacatecas generating a k eff of 0.86. According to the safety and radiation protection standards for the design of mini reactor of one, two and three cylinders they comply with the established safety, while designs of four and five cylinders not met. (Author)

Characterization of Mexican zeolite minerals; Caracterizacion de minerales zeoliticos mexicanos

Energy Technology Data Exchange (ETDEWEB)

Jimenez C, M.J

2005-07-01

50% of the Mexican territory is formed by volcanic sequences of the Pliocene type, which appear extensively in the northwest states (Sonora, Sinaloa, Chihuahua, Durango) and west of Mexico (Jalisco and Nayarit), in central Mexico (Zacatecas, Guanajuato, San Luis Potosi, Queretaro, Hidalgo) and south of Mexico (Guerrero, Oaxaca); therefore, it is to be expected that in our country big locations of natural zeolites exist in its majority of the clinoptilolite type. The present study was focused toward the characterization of two Mexican natural zeolite rocks presumably of the clinoptilolite and filipsite types, one of them comes from the state of Chihuahua and the other of a trader company of non metallic minerals, due that these materials are not characterized, its are not known their properties completely and therefore, the uses that can be given to these materials. In this investigation work it was carried out the characterization of two Mexican zeolite rocks, one coming from the Arroyo zone, municipality of La Haciendita, in the state of Chihuahua; and the other one was bought to a trader company of non metallic minerals. The two zeolites so much in their natural form as conditioned with sodium; they were characterized by means of X-ray diffraction, scanning electron microscopy of high vacuum and elementary microanalysis (EDS), surface area analysis (BET), thermal gravimetric analysis. To differentiate the heulandite crystalline phase of the other clinoptilolite rock, its were carried out thermal treatments. The quantification of Al, Na, Ca, K, Mg, Fe was carried out in solution, by means of atomic absorption spectroscopy and the quantity of Si was determined by gravimetry. The zeolite rocks presented for the major part the crystalline heulandite and clinoptilolite phases for the most part, and it was found that the zeolite coming from the state of Chihuahua possesses a bigger content of heulandite and the denominated filipsite it is really a zeolite

Measurement of K40 in mine soil

International Nuclear Information System (INIS)

Salazar R, A. R.; Vega C, H. R.

2014-10-01

The natural radioactivity of the soil and the external exposition of the gamma radiation mainly depend of the geologic characteristics of the same soil. Their radioactivity levels provide information of the radio-nuclides distribution in the environment and allow estimating the radiological risk. For this reason, the objective of this work was to determine the K 40 concentration in four soil samples of a mine that produces Ag, Pb, Cu, and Zn, in Zacatecas State (Mexico), through gamma rays spectrometry using a Sodium Iodide detector doped with Thallium (Nal (Tl)). The results it was found that the soil sample contaminated by the liquid effluents of the mine it has a specific activity of 353 Bq/kg, for draw Los Angeles of 55 Bq/kg, in the old dam of 307 Bq/kg and inside the mine of 485 Bq/kg, mentioning that all the sites refer to the same mine. Using a conversion factor of 0.043 n Gy/h (Bq/kg) -1 to calculate the absorbed dose in air of the natural radionuclide as the K 40 in the soil samples were founded the following dose reasons; of 15.18 n Gy/h, 2.37 n Gy/h, 13.2 n Gy/h and 20.86 n Gy/h, respectively. These results are similar to those reported for soil samples of Texas (USA), Karabuk (Turkey) and Kalpakkam (India), it should be noted that these samples are not mine samples; only were used like reference for this work. Our results are in an average of 300 Bq/kg that corresponds to one dose reason of 12.9 n Gy/h, comparing it with the highest value reported in the case of Chinese that is of 580 Bq/kg (24.94 n Gy/h) throwing a difference of 48.3% and compared with the smallest average value that belongs to Tripoli (Libya) of 270 Bq/kg (11.61 n Gy/h) is of 10%. The concentration average of the K 40 activity was below the world average of absorbed dose, which is of 55 n Gy/h of the average reported for the world, therefore these results can be used as a reference for the radioactivity analysis in the soil of this mine. (Author)

Study protocol: intervention in maternal perception of preschoolers' weight among Mexican and Mexican-American mothers.

Science.gov (United States)

Flores-Peña, Yolanda; He, Meizi; Sosa, Erica T; Avila-Alpirez, Hermelinda; Trejo-Ortiz, Perla M

2018-05-30

Childhood obesity is a public health issue negatively affecting children's physical and psychosocial health. Mothers are children's primary caregivers, thus key players in childhood obesity prevention. Studies have indicated that mothers underestimate their children's weight. If mothers are unaware of their children's weight problem, they are less likely to participate in activities preventing and treating excess weight. The "Healthy Change" intervention is designed to change maternal perception of child's weight (MPCW) through peer-led group health education in childcare settings. The "Healthy Change" is a multicenter two-arm randomized trial in four centers. Three centers are in Mexican States (Nuevo Leon, Tamaulipas, and Zacatecas). The fourth center is in San Antonio, Texas, USA. A total of 360 mother-child pairs (90 pairs per center) are to be randomly and evenly allocated to either the intervention or the control group. Intervention group will receive four-session group obesity prevention education. Control group will receive a four-session personal and food hygiene education. The education is delivered by trained peer-mother promotoras. Data will be collected using questionnaires and focus groups. The primary outcome is a change in proportion of mothers with accurate MPCW. Secondary outcomes include change in maternal feeding styles and practices, maternal self-efficacy and actions for managing child excessive weight gain. McNemar's Test will be used to test the primary outcome. The GLM Univariate procedure will be used to determine intervention effects on secondary outcomes. The models will include the secondary outcome measures as the dependent variables, treatment condition (intervention/control) as the fixed factor, and confounding factors (e.g., mother's education, children's gender and age) as covariates. Sub-analyses will be performed to compare intervention effects on primary and secondary outcomes between the samples from Mexico and Texas, USA

Designing a mini subcritical nuclear reactor; Diseno de un mini reactor nuclear subcritico

Energy Technology Data Exchange (ETDEWEB)

Escobedo G, C. R.; Vega C, H. R.; Davila H, V. M., E-mail: rafelaescobedo@hotmail.com [Universidad Autonoma de Zacatecas, Unidad Academica de Estudios Nucleares, Jardin Juarez 147, Col. Centro, 98000 Zacatecas, Zac. (Mexico)

2015-10-15

In this work the design of a mini subcritical nuclear reactor formed by means of light water moderator, uranium as fuel, and isotopic neutron source of {sup 239}PuBe was carried out. The design was done by Monte Carlo methods with the code MCNP5 in which uranium was modeled in an array of concentric holes cylinders of 8.5, 14.5, 20.5, 26.5, 32.5 cm of internal radius and 3 cm of thickness, 36 cm of height. Different models were made from a single fuel cylinder (natural uranium) to five. The neutron source of {sup 239}PuBe was situated in the center of the mini reactor; in each arrangement was used water as moderator. Cross sections libraries Endf/Vi were used and the number of stories was large enough to ensure less uncertainty than 3%. For each case the effective multiplication factor k{sub e}-f{sub f}, the amplification factor and the power was calculated. Outside the mini reactor the ambient dose equivalent H (10) was calculated for different cases. The value of k{sub eff}, the amplification factor and power are directly related to the number of cylinders of uranium as fuel. Although the average energy of the neutrons {sup 239}PuBe is between 4.5 and 5 MeV in the case of the mini reactor for a cylinder, in the neutron spectrum the presence of thermal neutrons does not exist, so that produced fissions are generated with fast neutrons, and in designs of two and three rings the neutron spectra shows the presence of thermal neutrons, however the fissions are being generated with fast neutrons. Finally in the four and five cases the amount of moderator is enough to thermalized the neutrons and thereby produce the fission. The maximum value for k{sub eff} was 0.82; this value is very close to the assembly of Universidad Autonoma de Zacatecas generating a k{sub eff} of 0.86. According to the safety and radiation protection standards for the design of mini reactor of one, two and three cylinders they comply with the established safety, while designs of four and five

Evaluating the performance of two neutron spectrum unfolding codes based on iterative procedures and artificial neural networks

International Nuclear Information System (INIS)

Ortiz-Rodríguez, J. M.; Reyes Alfaro, A.; Reyes Haro, A.; Solís Sánches, L. O.; Miranda, R. Castañeda; Cervantes Viramontes, J. M.; Vega-Carrillo, H. R.

2013-01-01

In this work the performance of two neutron spectrum unfolding codes based on iterative procedures and artificial neural networks is evaluated. The first one code based on traditional iterative procedures and called Neutron spectrometry and dosimetry from the Universidad Autonoma de Zacatecas (NSDUAZ) use the SPUNIT iterative algorithm and was designed to unfold neutron spectrum and calculate 15 dosimetric quantities and 7 IAEA survey meters. The main feature of this code is the automated selection of the initial guess spectrum trough a compendium of neutron spectrum compiled by the IAEA. The second one code known as Neutron spectrometry and dosimetry with artificial neural networks (NDSann) is a code designed using neural nets technology. The artificial intelligence approach of neural net does not solve mathematical equations. By using the knowledge stored at synaptic weights on a neural net properly trained, the code is capable to unfold neutron spectrum and to simultaneously calculate 15 dosimetric quantities, needing as entrance data, only the rate counts measured with a Bonner spheres system. Similarities of both NSDUAZ and NSDann codes are: they follow the same easy and intuitive user's philosophy and were designed in a graphical interface under the LabVIEW programming environment. Both codes unfold the neutron spectrum expressed in 60 energy bins, calculate 15 dosimetric quantities and generate a full report in HTML format. Differences of these codes are: NSDUAZ code was designed using classical iterative approaches and needs an initial guess spectrum in order to initiate the iterative procedure. In NSDUAZ, a programming routine was designed to calculate 7 IAEA instrument survey meters using the fluence-dose conversion coefficients. NSDann code use artificial neural networks for solving the ill-conditioned equation system of neutron spectrometry problem through synaptic weights of a properly trained neural network. Contrary to iterative procedures, in neural

Evaluating the performance of two neutron spectrum unfolding codes based on iterative procedures and artificial neural networks

Science.gov (United States)

Ortiz-Rodríguez, J. M.; Reyes Alfaro, A.; Reyes Haro, A.; Solís Sánches, L. O.; Miranda, R. Castañeda; Cervantes Viramontes, J. M.; Vega-Carrillo, H. R.

2013-07-01

In this work the performance of two neutron spectrum unfolding codes based on iterative procedures and artificial neural networks is evaluated. The first one code based on traditional iterative procedures and called Neutron spectrometry and dosimetry from the Universidad Autonoma de Zacatecas (NSDUAZ) use the SPUNIT iterative algorithm and was designed to unfold neutron spectrum and calculate 15 dosimetric quantities and 7 IAEA survey meters. The main feature of this code is the automated selection of the initial guess spectrum trough a compendium of neutron spectrum compiled by the IAEA. The second one code known as Neutron spectrometry and dosimetry with artificial neural networks (NDSann) is a code designed using neural nets technology. The artificial intelligence approach of neural net does not solve mathematical equations. By using the knowledge stored at synaptic weights on a neural net properly trained, the code is capable to unfold neutron spectrum and to simultaneously calculate 15 dosimetric quantities, needing as entrance data, only the rate counts measured with a Bonner spheres system. Similarities of both NSDUAZ and NSDann codes are: they follow the same easy and intuitive user's philosophy and were designed in a graphical interface under the LabVIEW programming environment. Both codes unfold the neutron spectrum expressed in 60 energy bins, calculate 15 dosimetric quantities and generate a full report in HTML format. Differences of these codes are: NSDUAZ code was designed using classical iterative approaches and needs an initial guess spectrum in order to initiate the iterative procedure. In NSDUAZ, a programming routine was designed to calculate 7 IAEA instrument survey meters using the fluence-dose conversion coefficients. NSDann code use artificial neural networks for solving the ill-conditioned equation system of neutron spectrometry problem through synaptic weights of a properly trained neural network. Contrary to iterative procedures, in neural

Evaluating the performance of two neutron spectrum unfolding codes based on iterative procedures and artificial neural networks

Energy Technology Data Exchange (ETDEWEB)

Ortiz-Rodriguez, J. M.; Reyes Alfaro, A.; Reyes Haro, A.; Solis Sanches, L. O.; Miranda, R. Castaneda; Cervantes Viramontes, J. M. [Universidad Autonoma de Zacatecas, Unidad Academica de Ingenieria Electrica. Av. Ramon Lopez Velarde 801. Col. Centro Zacatecas, Zac (Mexico); Vega-Carrillo, H. R. [Universidad Autonoma de Zacatecas, Unidad Academica de Ingenieria Electrica. Av. Ramon Lopez Velarde 801. Col. Centro Zacatecas, Zac., Mexico. and Unidad Academica de Estudios Nucleares. C. Cip (Mexico)

2013-07-03

In this work the performance of two neutron spectrum unfolding codes based on iterative procedures and artificial neural networks is evaluated. The first one code based on traditional iterative procedures and called Neutron spectrometry and dosimetry from the Universidad Autonoma de Zacatecas (NSDUAZ) use the SPUNIT iterative algorithm and was designed to unfold neutron spectrum and calculate 15 dosimetric quantities and 7 IAEA survey meters. The main feature of this code is the automated selection of the initial guess spectrum trough a compendium of neutron spectrum compiled by the IAEA. The second one code known as Neutron spectrometry and dosimetry with artificial neural networks (NDSann) is a code designed using neural nets technology. The artificial intelligence approach of neural net does not solve mathematical equations. By using the knowledge stored at synaptic weights on a neural net properly trained, the code is capable to unfold neutron spectrum and to simultaneously calculate 15 dosimetric quantities, needing as entrance data, only the rate counts measured with a Bonner spheres system. Similarities of both NSDUAZ and NSDann codes are: they follow the same easy and intuitive user's philosophy and were designed in a graphical interface under the LabVIEW programming environment. Both codes unfold the neutron spectrum expressed in 60 energy bins, calculate 15 dosimetric quantities and generate a full report in HTML format. Differences of these codes are: NSDUAZ code was designed using classical iterative approaches and needs an initial guess spectrum in order to initiate the iterative procedure. In NSDUAZ, a programming routine was designed to calculate 7 IAEA instrument survey meters using the fluence-dose conversion coefficients. NSDann code use artificial neural networks for solving the ill-conditioned equation system of neutron spectrometry problem through synaptic weights of a properly trained neural network. Contrary to iterative procedures, in

Characterization of Mexican zeolite minerals

International Nuclear Information System (INIS)

Jimenez C, M.J.

2005-01-01

50% of the Mexican territory is formed by volcanic sequences of the Pliocene type, which appear extensively in the northwest states (Sonora, Sinaloa, Chihuahua, Durango) and west of Mexico (Jalisco and Nayarit), in central Mexico (Zacatecas, Guanajuato, San Luis Potosi, Queretaro, Hidalgo) and south of Mexico (Guerrero, Oaxaca); therefore, it is to be expected that in our country big locations of natural zeolites exist in its majority of the clinoptilolite type. The present study was focused toward the characterization of two Mexican natural zeolite rocks presumably of the clinoptilolite and filipsite types, one of them comes from the state of Chihuahua and the other of a trader company of non metallic minerals, due that these materials are not characterized, its are not known their properties completely and therefore, the uses that can be given to these materials. In this investigation work it was carried out the characterization of two Mexican zeolite rocks, one coming from the Arroyo zone, municipality of La Haciendita, in the state of Chihuahua; and the other one was bought to a trader company of non metallic minerals. The two zeolites so much in their natural form as conditioned with sodium; they were characterized by means of X-ray diffraction, scanning electron microscopy of high vacuum and elementary microanalysis (EDS), surface area analysis (BET), thermal gravimetric analysis. To differentiate the heulandite crystalline phase of the other clinoptilolite rock, its were carried out thermal treatments. The quantification of Al, Na, Ca, K, Mg, Fe was carried out in solution, by means of atomic absorption spectroscopy and the quantity of Si was determined by gravimetry. The zeolite rocks presented for the major part the crystalline heulandite and clinoptilolite phases for the most part, and it was found that the zeolite coming from the state of Chihuahua possesses a bigger content of heulandite and the denominated filipsite it is really a zeolite

Ciencia básica y ciencia aplicada Basic science and applied science

Directory of Open Access Journals (Sweden)

Ruy Pérez-Tamayo

2001-08-01

Full Text Available En el contexto de una intervención en el Foro de Consulta Democrática de la Coordinación de los Institutos Nacionales de Salud sobre Enseñanza e Investigación en Salud, realizado en el Instituto Nacional de Cardiología Ignacio Chávez, se hace una revisión crítica de la clasificación convencional de la ciencia en básica y aplicada; además, se analiza lo que deberían ser la enseñanza y la investigación en salud. Para apoyar su propia clasificación de la ciencia en "bien hecha", la cual "genera conocimientos verificables sobre la realidad" y la "mal hecha", improductiva o productora de "puras mentiras" y "no debe patrocinarse", el autor revisa las definiciones utilitaristas y peyorativas como las que establecen ciencia comprometida y ciencia pura, ciencia útil y ciencia inútil, y ciencia práctica y ciencia esotérica, como sinónimos de ciencia aplicada y ciencia básica y afirma que, en México, esta diferenciación "para lo único que ha servido en el pasado es para justificar la reducción en el apoyo oficial a la ciencia básica, porque no estaba dirigida a resolver ´los problemas nacionales´o porque no caía en las prioridades establecidas en ese sexenio". En cuanto a educación e investigación en salud reconoce que el programa actual de formación de investigadores tiene una eficiencia muy baja y propone un estudio científico crítico, realizado por un equipo de especialistas, interdisciplinario, "para integrar la carrera del investigador científico desde la captura de la juventud inteligente hasta la jubilación o muerte del investigador" y para el cual la evaluación de la eficiencia del apoyo a sus proyectos de investigación no se restrinja a si se publicó o no un artículo "pues la calidad del trabajo científico y la contribución de un investigador al desarrollo de la ciencia no es nada más el número de sus publicaciones". El texto completo en inglés de este artículo está disponible en: http

Reviews | Reseñas de libros

Directory of Open Access Journals (Sweden)

Pasado y Memoria

2014-12-01

Full Text Available Reseñas: ALONSO, Gregorio, La nación en capilla. Ciudadanía católica y cuestión religiosa en España (1793-1874, Granada, Comares Historia, 2014, 376 pp. / Alicia Mira Abad; COLETES BLANCO, Agustín; LASPRA RODRÍGUEZ, Alicia, (eds. y trads., Libertad frente a Tiranía: Poesía inglesa de la Guerra de la Independencia (1808-1814. Antología Bilingüe, Madrid y Barcelona, Espasa Libros, 2013, 432 pp. / Ignacio Gracia Noriega; BARBASTRO GIL, Luis, El episcopado español y el alto clero en la Guerra de la Independencia (1808-1814. La huella del afrancesamiento, prólogo de Antonio Moliner Prada, Alicante, Instituto Alicantino de Cultura Juan Gil-Albert, 2013, 407 pp. / Rafael Fernández Sirvent; RAMÍREZ, Pedro J., La desventura de la libertad. José María Calatrava y la caída del régimen constitucional español en 1823, Madrid, La Esfera de los Libros, 2014, 1165 pp. / Ignacio Fernández Sarasola; QUINTERO, Tomás; FARMER, Thomas, Informes del espía de la República de Colombia en la corte de Fernando VII (1825-1830, edición, presentación y notas por Daniel Gutiérrez Ardila, Bogotá, Universidad Externado de Colombia, 2012, 563 pp. / Emilio La Parra López; PASTOR GARRIGUES, Francisco Manuel, A las puertas del Protectorado. Las negociaciones secretas hispanofrancesas en torno a Marruecos (1901-1904, presentación por Alberto M. Pérez Calero, prólogo de Juan Ortiz Villalba, Sevilla, Universidad de Sevilla-Ateneo de Sevilla, 2013, 253 pp. / Juan B. Vilar; FUENTES CODERA, Maximiliano, España en la Primera Guerra Mundial. Una movilización cultural, Madrid, Akal, 2014, 238 pp. / Guillermo J. Pérez Casanova; HEARD, Martha E., Salir del silencio. Voces de Càlig. 1900-1938, Benicarló, Onada edicions, 2013, 216 pp. / Rosa Monlleó Peris; RAMOS PALOMO, María Dolores (coord., Andaluzas en la historia. Reflexiones sobre política, trabajo y acción colectiva, Sevilla, Centro de Estudios Andaluces, 2012, 182 pp. / Sergio Sánchez Collantes

ÍNDICE

Directory of Open Access Journals (Sweden)

MARÍA JESUS MARRON GAITE

2015-12-01

Full Text Available PRESENTACIÓN: La investigación en Educación GeográficaCOORDINACIÓN: Ramón Martínez Medina.................................................... 7ARTÍCULOSFormer ses élèves à L’abstraction en géographieBernadette Mérenne-Schoumaker................................................................ 25El paisaje en la Educación Secundaria Obligatoria. Una oportunidad educativa en el cambio curricular LOE-LOMCEMaría Casas Jericó y Luis Erneta Altarriba ...................................................... 4Parques naturales: la necesaria conceptualización transformadora en la Educación Primaria y SecundariaDiana Santana Martín, Antonio José Morales Hernández, Juan Carlos Colomer Rubio, Benito Campo Pais, Carlos Caurín Alonso............................................ 73Le territoire, un concept sensible : enjeux didactiques et politiques dans le contexte scolaire françaisEric Ratzel et Jean-François Thémines..................................................................................................95La obra La recogida de la manzana como pretexto para la lectura e interpretación del paisaje tradicional a través de una fuente iconográfica: un estudio con alumnado de 2º de BachilleratoRoberto García-Morís..................................................................................................... 115Propuesta didáctica para la interpretación del espacio geográfico: la ciudad de Segovia y su entornoLuis Carlos Martínez Fernández, Berta Fernández-Vega Peláez e Ignacio Molina de la Torre.................................................................................................. 135Aportes del enfoque de género para una enseñanza inclusiva de la Geografía escolarMaría Victoria Fernández Caso y Daniela Guberman....................................... 165El modelo TPACK en los estudios de Grado para la formación inicial del profesorado en TIC Isabel Mª Gómez Trigueros

Pre-Columbian Agriculture: Construction history of raised fields in Bermeo, in the Bolivian Lowlands

Science.gov (United States)

Rodrigues, Leonor; Fehr, Seraina; Lombardo, Umberto; Veit, Heinz

2013-04-01

Since the beginning of the 1960s, research in the Amazon has revealed that in Pre-Columbian times, landscapes that were viewed as challenging living environments were nevertheless altered in several ways. Raised fields agriculture is one of the most impressive phenomena that can be found in South-eastern Amazonia. Pre-Columbian raised fields are earth platforms of differing shape and dimension that are elevated above the landscape's natural surface. The Llanos de Moxos, situated in the Bolivian Lowlands is one of the areas with the highest density of raised fields. In spite of the high interest in raised field agriculture, very few field-based investigations have been performed. As a result, there remains little explanation as to how they were constructed, managed or for what time frame they were in use. Recently, more detailed investigations have been performed on raised fields located in the indigenous community of Bermeo, in the vicinity of San Ignacio de Moxos. Combined data from fieldwork and laboratory analysis including particle size distribution, thin section micromorphology and radiocarbon analyses as well as optically stimulated luminescence analysis has given an insight into the history of their construction. Applied to the Bolivian Lowlands, the current study provides for the first time data showing aspects of the Pre-Columbian management of the raised fields, and a chronological sequence of utilization and abandonment of these fields. Radiocarbon dating has shown that the raised fields had been in use since as early as 900 AD. Two distinct paleosols identified in the field sequence point to the existence of two separate prolonged soil formation periods. The paleosols are characterized by initial stages of Bt-horizons. Each soil sequence indicates therefore a particular stable period of the field during which no new earth was heaped up. This suggests that contrary to the well supported theory that raised fields were managed through continuous

Standardization of micro-enzyme-linked immunosorbent assay (ELISA) and Western blot for detection of Trypanosoma cruzi antibodies using extracts from Mexican strains as antigens.

Science.gov (United States)

Sánchez, B; Monteón, V; Reyes, P A; Espinoza, B

2001-01-01

This report describes two assays for the detection of anti-Trypanosoma cruzi antibodies using Mexican strains of the parasite and the concordance with two assays previously evaluated at the Instituto Nacional de Cardiología Ignacio Chávez in Mexico City. Micro-enzyme-linked immunosorbent assay (ELISA) and Western blot were used for the detection of T. cruzi antibodies with a total extract of epimastigote from Ninoa and Queretaro, which are Mexican strains of T. cruzi. To standardize these methods, a total of 246 serum samples was used. In addition, sera from six confirmed Mexican chronic individuals in the asymptomatic phase were also used for comparison with the Argentinean antigen. ELISA was 100% specific in that no false positive results were found with sera of both healthy individuals and non-Chagasic cardiopaths. Sera from individuals infected with Leishmania sp. showed approximately 16% of cross-reaction with ELISA. The test showed a positive predictive value of 90% and a negative predictive value of 100%. Western blot was also a highly sensitive test for detecting chronic Chagasic symptomatic patients from Mexico because no false negative results were obtained. Furthermore, it was possible to use Western blot to detect seven immunodominant antigens of approximately 30, 32, 40, 42, 65, 70, and 83 kDa. Concordance with two previous standardized tests at the Instituto Nacional de Cardiología showed a Kappa index of 0.96, indicating high concordance between the results obtained at these two laboratories. Finally, ELISA using Ninoa antigen extract was more sensitive than ELISA with an Argentinean extract, which failed to detect individuals in the chronic asymptomatic phase (undetermined phase) of infection. This study indicates that ELISA and Western blot using Ninoa and/or Queretaro extracts of T. cruzi as antigens are useful tools in the detection of individuals who have been exposed to T. cruzi both in the undetermined/asymptomatic and symptomatic phases

Fixed-dose combinations at the front line of multimodal pain management: perspective of the nurse-prescriber

Directory of Open Access Journals (Sweden)

O'Brien J

2013-02-01

Full Text Available Joanne O’Brien,1 Joseph V Pergolizzi Jr,2 Mart van de Laar3, Hans-Ulrich Mellinghoff,4 Ignacio Morón Merchante,5 Srinivas Nalamachu,6 Serge Perrot,7 Robert B Raffa81Department of Pain Medicine, Beaumont Hospital, Beaumont, Dublin, Ireland; 2Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD; Association of Chronic Pain Patients, Houston, TX; Department of Pharmacology, Temple University School of Medicine, Philadelphia, PA, USA; 3Arthritis Center Twente, Enschede, The Netherlands; 4Department of Endocrinology, Diabetology and Osteology, Kantonsspital St Gallen, Switzerland; 5Centro de Salud Universitario Goya, Madrid, Spain; 6Kansas University Medical Center, Kansas City, and International Clinic Research, Leawood, KS, USA; 7Service de Médecine Interne et Consultation de la Douleur, Hôpital Hotel Dieu, Paris Descartes University, Paris, France; 8Department of Pharmaceutical Sciences, Temple University School of Pharmacy, Philadelphia PA, USAAbstract: Pain should be treated promptly and effectively to restore the patient to full function, avoid pain chronification, and preserve quality of life. A recent pain specialists' meeting discussed the use of different pharmacological treatment options, such as topical analgesics, nonopioid agents (such as paracetamol and nonsteroidal anti-inflammatory drugs, weak and strong opioids, and fixed-dose combination products in the management of moderate to severe pain from different etiologies. One of the topics discussed in, and subsequent to, this meeting was the role of fixed-dose combination products for nurse-prescribers who are in many ways at the front line of managing both acute and chronic pain syndromes. The panel agreed that proper product selection should take into account the patient's age, condition, type of pain, and comorbidities, as well as balance safety with effectiveness. Although nurse-prescribers need to be aware of cumulative paracetamol dosing, fixed

Bioavailability of cadmium, copper, mercury, lead, and zinc in subtropical coastal lagoons from the southeast Gulf of California using mangrove oysters (Crassostrea corteziensis and Crassostrea palmula).

Science.gov (United States)

Páez-Osuna, Federico; Osuna-Martínez, Carmen C

2015-02-01

Cadmium (Cd), copper (Cu), mercury (Hg), lead (Pb), and zinc (Zn) were assessed in the edible tissues of Crassrotrea corteziensis oysters collected during the rainy and dry seasons in 27 sites from 8 coastal lagoons of the southeast Gulf of California. In addition, C. palmula oysters were sampled at 9 sites from the same mangrove roots where C. corteziensis oysters were collected. Metal analyses were performed by flame atomic absorption spectrophotometry (Cd, Cu, and Zn), graphite furnace (Pb), and cold vapor detection (Hg). The obtained mean levels were (µg g(-1) dry weight) as follows: Cd 6.05 ± 2.77, Cu 60.0 ± 33.4, Hg 0.38 ± 0.17, Pb 1.11 ± 0.63, and Zn 777 ± 528 µg g(-1). For all metals except Hg, the concentrations were greater during dry season than during rainy seasons. The high levels, particularly that for Cd, were related to upwelling along the eastern Gulf of California. High Hg levels in the rainy season were associated with the transport of materials from the watershed to the lagoon. Shrimp farming, agriculture, and other sources were considered as potential sources to explain the differences in metal bioavailability in the 8 lagoons. The mean concentrations of Cd (Santa María-La Reforma lagoon), Cu [San Ignacio-Navachiste-El Macapule (SINM), Urías (URI), and Altata-Ensenada del Pabellón lagoons], and zinc (Zn) (URI, Santa María-Ohuira-Topolobampo, El Colorado, and SINM lagoons) during the dry season were greater than the maximum permissible limits. C. palmula collected in 8 sites where they were present simultaneously with C. corteziensis had consistently greater metal levels than C. corteziensis, but correlation analyses showed a high and significant (P < 0.05) correlation between metal concentrations in both species. The correlation equations obtained are useful where the same species is not distributed and is necessary to compare results from distinct regions.

Topical niacinamide 4% and desonide 0.05% for treatment of axillary hyperpigmentation: a randomized, double-blind, placebo-controlled study

Directory of Open Access Journals (Sweden)

Castanedo-Cazares JP

2013-01-01

Full Text Available Juan Pablo Castanedo-Cazares,1 Gabryela Lárraga-Piñones,1 Adriana Ehnis-Pérez,1 Cornelia Fuentes-Ahumada,1 Cuauhtemoc Oros-Ovalle,2 Bruce R Smoller,3 Bertha Torres-Álvarez11Department of Dermatology, 2Department of Pathology, Hospital Central Dr Ignacio Morones Prieto, Universidad Autónoma de San Luis Potosí, México; 3Department of Pathology, University of Arkansas for Medical Sciences, Little Rock, AK, USABackground: Axillary hyperpigmentation is a frequent cause of cosmetic consultations in dark-skinned women from tropical areas, including Latin America. Currently, there is no widely accepted treatment for the disorder, but it is usually treated with bleaching agents because it is considered a variant of inflammatory hyperpigmentation. The purpose of this study was to assess the efficacy of niacinamide 4% and desonide 0.05% emulsions compared with placebo in the treatment of axillary hyperpigmentation.Methods: Twenty-four women aged 19–27 years with hyperpigmented axillae (phototype III–V were randomly assigned to receive the study treatments in the axillary region. Improvement was assessed at baseline, then clinically and by colorimetry 9 weeks later. Quantitative evaluation including melanin, inflammatory infiltrates, NKI/Beteb, CD1a, CD68, and collagen type IV content was performed by histochemistry and immunohistochemistry, assisted by computerized morphometric analysis.Results: Both niacinamide and desonide induced significant colorimetric improvement compared with placebo; however, desonide showed a better depigmenting effect than niacinamide. A good to excellent response was achieved in 24% of cases for niacinamide, 30% for desonide, and 6% for placebo. We observed a marked disruption of the basal membrane in axillary hyperpigmentation and an inflammatory infiltrate that improved after treatment. Decreased pigmentation in the desonide-treated axillae was associated with recovery of disruption at the basal membrane

Andean settlers rush for Amazonia.

Science.gov (United States)

Serra-vega, J

1990-01-01

Governments of Andean countries (Peru, Bolivia, Colombia, Ecuador, and Venezuela) have encouraged migration to the Amazon Basin, which has contributed to its destruction. Population pressure, landlessness, and poverty are the inducements to migrate. Efforts to populate the Amazon forest were begun as early as 1964 in Peru without international notice. By 1980, logging was allowed in Peru, and Brazil considered colonization of the Amazon essential to national sovereignty. By 1986, outside of Lima, Peru, a development project originally funded by the World Bank, the InterAmerican Development Bank, and the US, resulted in conflicts between settlers and Indians, in loggers indiscriminately cutting, and in farmers using slash and burn techniques to clear forests. Elsewhere the Peruvian Amazon, in San Ignacio, the population was growing by 5.5%/year. The jungle road that had been started but never completed, Carretera Marginal, destroyed 5 million hectares of primary forest, and much of the 600,000 hectares of arable land gained by the road suffered from inappropriate farming practices which caused massive erosion and laterization of the soils. Food crop production declined, and production of coca for cocaine increased. Coca crops are controlled by the Shining Path guerrillas, who are trying to overthrow the Peruvian government. Devastation of Ecuador around Lago Agrio continues. In Colombia, east of Bogota, forests have disappeared and hills have eroded and silted up rivers and dams. The Andean piedmont in Bolivia has also been devastated by loggers and by slash and burn farming. Southeastern Bolivian forests have been cleared for soya bean cultivation on poor soils. Social and economic crises propel people into the remaining forests. The solution is to ease foreign debt, transfer appropriate technology at affordable prices, refuse to finance destructive development, and help to educate and train scientific researchers. Family planning services are also urgently needed

New developments in the treatment of osteoarthritis – focus on biologic agents

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Torrero JI

2015-07-01

Full Text Available Jose Ignacio Torrero,1 Carlos Martínez2 1BioTrauma Centre, Escaldes, Principality of Andorra; 2University of Illinois Hospital and Health Sciences System, Chicago, IL, USA Abstract: Osteoarthritis (OA is one of the most common diseases around the world. Medical, social, and financial consequences oblige clinicians, surgeons, and researchers to focus on finding the best treatment option, to eradicate and stop this degenerative joint disease, in order to avoid surgical options which in many instances are over-indicated. Noninvasive treatments, such as anti-inflammatory drugs, physiotherapy, orthotic devices, dietary supplements, have demonstrated lack of effectiveness. The possibility to perform intra-articular injections with hyaluronic acid, corticosteroids, or the newest but criticized treatment based on platelet-rich plasma (PRP has changed the management of OA disease. The use of PRP has led to many differences in treatment since there is a lack of consensus about protocols, indications, number of doses, cost-effectiveness, and duration of the treatment. Many publications have suggested efficacy in tendon injuries, but when PRP has been indicated to treat cartilage injuries, things are more inconsistent. Some authors have reported their experience treating OA with PRP, and it seems that, if well indicated, it is an option as a supplementary therapy. Therefore, we need to understand that OA is a mechanical disease which not only produces changes in radiographs, but also affects the quality of life. Pathogenesis of OA has been well explained, providing us new knowledge and future possibilities to improve the clinical approach. From basic science to surgery, there is a great field we all need to contribute to, because the general population is aging and total joint replacements should not be the only solution for OA. So herein is an actual review of the developments for treating OA with biologics, intended to be useful for the population inside

Identification of thermotectonics events by 40Ar/39Ar methodology, in Jauru, Pontes e Lacerda and Rio Alegre Terrane - southwest portion of Amazon Craton

International Nuclear Information System (INIS)

Paulo, Valeria Guimaraes de

2005-01-01

The southwest portion of Amazon Craton, subject of these work, correspond to the southwest region of Mato Grosso State and is inserted on Rio Negro-Juruena, Rondoniana-San Ignacio and Sunsas-Aguapei geochronologic Provinces. This region is surrounded by three big terranes: Jauru, Pontes e Lacerda and Rio Alegre. The main aim of this study is to use the ages of termochronologic events obtained by 40 Ar/ 39 Ar methodology, including data of literature, to contribute with the study of the geotectonic evolution on this region. Twenty samples were analyzed and 40 Ar/ 39 Ar ages found for the Jauru Terrane vary of 1539 ± 3 Ma to 1338 ± 3 Ma, for the Pontes e Lacerda Terrane the interval obtained was of 946,1 ± 0,8 Ma to 890 ± 2 Ma and for Rio Alegre Terrane the ages are between 1407 ± 3 Ma to 1321 ± 2 Ma. U/Pb, Rb/Sr and Sm/Nd data from previous works, together with 40 Ar/ 39 Ar results allowed to obtain cooling average rates to each terrane. The Jauru Terrane units cooling age is equivalent to 1,52 Ga. The cooling average rates found to Alto Jauru Greenstone belt rocks is 2,4 deg C - 1,0 Ma and to Magmatic Arc Cachoeirinha is 10,8 deg C - 1,0 Ma. Stabilization age obtained for Pontes and Lacerda Terrane is about 900 Ma coherent with the cooling age of the Sunsas Aguapei Event (1,0 - 0,9 Ga) and cooling average rates calculate were the lower, equivalent to 1,0 deg C - 1,0 Ma. Cooling age found in Rio Alegre Terrane was 1,35 Ga, possibility correspond to collision age these terrane with Amazonian protoCraton and cooling average rates of 5,0 deg C - 1,0 Ma. Finally, younger age found of 900 Ma, coherent to the Sunsas - Aguapei Event, probably represent the last regional event that affected these rocks, characterizing the stabilization period of the southwest portion of Amazon Craton. (author)

The analysis of pre-hispanic obsidians by the neutron activation technique

International Nuclear Information System (INIS)

Esparza L, R.; Tenorio C, D.; Jimenez R, M.

2005-01-01

The project called Bank of Data of the locations of obsidian of the occident of Mexico (Analysis by Neutron activation) as it has been explained, for the use of the Neutron activation analysis in archaeological materials it was developed from the years 1960. In Mexico it use is unfortunately very later, until the middle of the decade of 1990 the first studies were made. Without a doubt we face a bigger challenge which consists on creating databases of different materials to have comparison parameters of the studied materials. In the foreigner's different institutions (Missouri Research Reactor, University of Berkeley, among other) it has been of great importance the possibility to be able to compare the databases of each investigation with other coming from different institutions. The results to that have arrived even present certain error margin using the same study patterns, for what is advisable to only use own databases; for it, in the project of this investigation it is sought that the Nuclear Center has its own wealth of information of the different obsidian locations that they exist in the Mexican territory, so that later on the reliable analysis of materials coming from different archaeological places is made to know its origin. Thirteen obsidian locations were analyzed that are located in the states of Michoacan, Jalisco, Guanajuato and Zacatecas. The geologic samples were obtained of different investigation projects, of the National Institute of Anthropology and History, of the Center of Meso-American Studies and of Central America (CEMCA) and of the New Orleans University. One of the problems that face when studying the obsidian locations in the occident of Mexico is linked with the variety of colors that they exist in different locations. With it, we want to show the difficulty that it exists to study this material at level 'eye meter', that which could carry errors and graft of the archaeological information. It is for that reason that it becomes

Comparative study of adsorbents for the removal of fluoride ions from water use and consumption in Mexico; Estudio comparativo de adsorbentes para la remocion de iones fluoruro del agua de uso y consumo en Mexico

Energy Technology Data Exchange (ETDEWEB)

Teutli S, E. A.

2014-07-01

Although fluoride is essential for health many studies have shown it is associated with some health problems, such as fluoro sis, thyroid disorder, neurological disease, Alzheimer, pineal gland and cancer. One of the major routes of exposure is through drinking water. The World Health Organization (Who) allows only 1.5 mg/L as a safe limit for fluoride ions in drinking water and the EPA U. S. Environmental Protection Agency has recently proposed 0.7 mg/L. In some cases, the water extracted from deep wells has concentrations of fluoride ions above 1.5 mg/L (NOM-127-SSA1-2000) which is the permissible limit of water for human use and consumption (whuc). In several countries, there are high concentrations of fluoride ions due to the geological distribution of fluorine-rich rocks. In our country we can find several states that have concentrations higher than 1.5 mg/L of fluoride ions in water, such as Aguascalientes, Zacatecas, Chihuahua, Coahuila, Durango, Guanajuato, Sonora, Jalisco and San Luis Potosi. Various technologies have been proposed to remove fluoride ions from water, such as adsorption, ion exchange, reverse osmosis, nano filtration, electrodialysis, dialysis and electrocoagulation. Sorption is superior to other techniques in terms of initial cost, simplicity of design and ease of operation. In this work systematic studies were done considering the aspects mentioned above, in order to determine the adsorbents properties and most suitable conditions for the removal of fluoride ions from whuc. It is important to note that to date no adsorption treatments for the removal of fluoride ions from water for human use and consumption in our country is done, although there are established methodologies, they have not been implemented because of their high costs. In this work an integral study was done on the removal of fluoride ions from water for human use and consumption. A comparative study of hematite, calcite and zeolite as adsorbents was performed to develop a

Measurement of K{sup 40} in mine soil; Medicion de K{sup 40} en suelo de mina

Energy Technology Data Exchange (ETDEWEB)

Salazar R, A. R.; Vega C, H. R., E-mail: rosy_ojitos@hotmail.com [Universidad Autonoma de Zacatecas, Unidad Academica de Estudios Nucleares, Cipres No. 10, Fracc. La Penuela, 98068 Zacatecas (Mexico)

2014-10-15

The natural radioactivity of the soil and the external exposition of the gamma radiation mainly depend of the geologic characteristics of the same soil. Their radioactivity levels provide information of the radio-nuclides distribution in the environment and allow estimating the radiological risk. For this reason, the objective of this work was to determine the K{sup 40} concentration in four soil samples of a mine that produces Ag, Pb, Cu, and Zn, in Zacatecas State (Mexico), through gamma rays spectrometry using a Sodium Iodide detector doped with Thallium (Nal (Tl)). The results it was found that the soil sample contaminated by the liquid effluents of the mine it has a specific activity of 353 Bq/kg, for draw Los Angeles of 55 Bq/kg, in the old dam of 307 Bq/kg and inside the mine of 485 Bq/kg, mentioning that all the sites refer to the same mine. Using a conversion factor of 0.043 n Gy/h (Bq/kg){sup -1} to calculate the absorbed dose in air of the natural radionuclide as the K{sup 40} in the soil samples were founded the following dose reasons; of 15.18 n Gy/h, 2.37 n Gy/h, 13.2 n Gy/h and 20.86 n Gy/h, respectively. These results are similar to those reported for soil samples of Texas (USA), Karabuk (Turkey) and Kalpakkam (India), it should be noted that these samples are not mine samples; only were used like reference for this work. Our results are in an average of 300 Bq/kg that corresponds to one dose reason of 12.9 n Gy/h, comparing it with the highest value reported in the case of Chinese that is of 580 Bq/kg (24.94 n Gy/h) throwing a difference of 48.3% and compared with the smallest average value that belongs to Tripoli (Libya) of 270 Bq/kg (11.61 n Gy/h) is of 10%. The concentration average of the K{sup 40} activity was below the world average of absorbed dose, which is of 55 n Gy/h of the average reported for the world, therefore these results can be used as a reference for the radioactivity analysis in the soil of this mine. (Author)