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Sample records for una cuenca endorreica

  1. Late Quaternary lacustrine paleoenvironments in the Cuenca de México

    USGS Publications Warehouse

    Bradbury, J.P.

    1989-01-01

    These lacustrine records offer important insights for evaluating the paleoenvironmental history of the Cuenca de México based on other evidence. They confirm glaciological, stratigraphic and palynologic data that suggest dry climates and the absence of large pluvial lakes in the Cuenca de México during and after the full glacial, but document climates of significantly increased precipitation at least 10 ka prior to 18 ka BP.

  2. Particulate Matter Fluxes in Cuenca Alfonso During 2002-2005

    NASA Astrophysics Data System (ADS)

    Silverberg, N.; Aguirre-Bahena, F.

    2007-05-01

    Time-series sediment trap data were collected between 2002 and 2005 from Cuenca Alfonso, a 400m-deep basin in Bahía de La Paz, a large embayment on the southwestern coast of the Gulf of California. Despite the lack of significant land drainage in this semi-dessert environment, terrigenous material, probably wind-born, dominates the sinking particulate matter. Peak lithogenic fluxes appear to be associated with higher frequencies of wind gusts stronger than 5 ms-1. Total mass flux fluctuated from week to week, and between years, averaging 277 gm-2y-1, essentially the same as radiometrically-determined accumulation rates of about 0.4 mmy-1 in cores of the underlying sediment. In 2003, the passage of 2 hurricanes induced high winds and flash flooding and the total mass flux offshore remained very high for two weeks following each event. This unusual sedimentation was equivalent to that of a full year without hurricanes and such events may account for some of the laminations found in cores. During most of 2005, on the other hand, sedimentation rates were lower than average. Although fluxes of all components tended to be highest during late fall and early winter, biogenic fluxes displayed peaks during all seasons of the year in Cuenca Alfonso. This is in contrast to the strong seasonal alternation between terrigenous sedimentation and diatom blooms observed in Guaymas Basin in the central Gulf. Furthermore, calcium carbonate dominated over biogenic silica within the marine component. Average annual fluxes of CaCO3, biogenic silica and POC were 52.5, 32.5 and 13.9 gm-2y-1, respectively.

  3. ASSOCIATIONS BETWEEN ENERGY AND FAT INTAKES WITH ADIPOSITY IN SCHOOLCHILDREN - THE CUENCA STUDY.

    PubMed

    Lahoz-García, Noelia; García-Hermoso, Antonio; Sánchez-López, Mairena; Cañete García-Prieto, Jorge; Milla-Tobarra, Marta; Martínez-Vizcaíno, Vicente

    2015-10-01

    Introducción: la relación entre los cambios en la ingesta energética en las últimas décadas y el incremento en las cifras de obesidad en niños está aún en debate. Objetivo: examinar la asociación entre la ingesta energética y de macronutrientes con diferentes medidas de adiposidad en niños, controlando por resistencia cardiorrespiratoria como una medida sustituta de la actividad física. Método: se realizó un estudio observacional sobre 320 escolares de entre 9 y 11 años (54,5% niñas). Se tomó información sobre variables sociodemográficas y se midió peso, altura, perímetro de cintura y porcentaje de masa grasa a través de bioimpedancia. El índice de masa grasa fue calculado dividiendo la masa grasa (en kg) entre la altura al cuadrado (en m), para ajustar por el tamaño corporal. La ingesta energética y el porcentaje de macronutrientes fueron medidos con dos recordatorios de 24-h en días no consecutivos (entre semana y fin de semana), empleando el software Young Adolescents’ Nutrition Assessment on Computer (YANA-C); el fitness cardiorrespiratorio fue medido a través del test de 20 metros de ida y vuelta. Resultados: los niños en el cuarto cuartil de perímetro de cintura tienen una ingesta de grasas menor (34,9%) que los chicos en el primer (42,4%; p = 0,019) y segundo cuartil (41,6%; p = 0,022). Los escolares en el primer cuartil de índice de masa grasa tienen mayor ingesta energética total que los escolares del cuarto cuartil (1762,3 kcal vs. 1496,8 kcal; p = 0,023). Las ingestas de macronutrientes relativas al peso son menores en los sujetos de las categorías más altas de estatus ponderal, perímetro de cintura e índice de masa corporal (p < 0,001). Conclusión: la adiposidad está inversamente asociada con las ingestas energética y de grasas. Una excesiva ingesta energética y de grasas no parece estar directamente asociada con la actual epidemia de obesidad de los escolares de Cuenca (España).

  4. The relationship between beverage intake and weight status in children: the Cuenca study.

    PubMed

    Milla Tobarra, Marta; Martínez-Vizcaíno, Vicente; Lahoz García, Noelia; García-Prieto, Jorge Cañete; Arias-Palencia, Natalia María; Garcia-Hermoso, Antonio

    2014-10-01

    Introducción: El consumo de bebidas está cobrando mayor importancia en las investigaciones actuales en relación a una posible asociación con la epidemia de obesidad infantil. La influencia de la actividad física en este consumo de fluidos ha sido escasamente estudiada y la resistencia cardiorespiratoria (RCR) puede resultar un marcador fiable para su valoración. Nuestro estudio analiza la ingesta de fluidos y su relación con el estatus ponderal ajustado por RCR en niños de 9-11 años. Métodos: Estudio transversal en el que participaron 373 niños de 9-11 años de colegios de la provincia de Cuenca (España). Para obtener la ingesta de bebidas, se realizó la media de dos recordatorios de 24 horas obtenidos mediante el programa YANA-C, validado para el estudio HELENA. La condición física cardiorrespiratoria fue evaluada a través del test de 20 metros ida y vuelta. Resultados: La ingesta media de líquidos fue de 1483,39 ml/día, y la energía proveniente de fluidos supone un 16% del aporte energético diario. Las bebidas suponen el 40% del aporte de azúcares ingeridos en la dieta. Las bebidas más consumidas en niños son los zumos naturales y las bebidas lácteas. Las niñas delgadas consumen más leches enteras y bebidas refrescantes “light” que sus homólogas con peso normal y sobrepeso-obesidad. Conclusiones: Los niños con exceso de peso consumen menos zumos naturales y bebidas lácteas, y las niñas consumen menos leches enteras y bebidas refrescantes “light” que sus compañeras en normopeso. Es de gran importancia revisar los hábitos de hidratación de los escolares para establecer conclusiones fiables sobre cuál es la mejor forma de hidratarse en diferentes situaciones para evitar ganancias ponderales.

  5. An Intelligent Ecosystem for Providing Support in Prehospital Trauma Care in Cuenca, Ecuador.

    PubMed

    Timbi-Sisalima, Cristian; Rodas, Edgar B; Salamea, Juan C; Sacoto, Hernán; Monje-Ortega, Diana; Robles-Bykbaev, Vladimir

    2015-01-01

    According to facts given by the World Health Organization, one in ten deaths worldwide is due to an external cause of injury. In the field of pre-hospital trauma care, adequate and timely treatment in the golden period can impact the survival of a patient. The aim of this paper is to show the design of a complete ecosystem proposed to support the evaluation and treatment of trauma victims, using standard tools and vocabulary such as OpenEHR, as well as mobile systems and expert systems to support decision-making. Preliminary results of the developed applications are presented, as well as trauma-related data from the city of Cuenca, Ecuador.

  6. Chemical fingerprints of hydrological compartments and flow paths at La Cuenca, western Amazonia

    NASA Astrophysics Data System (ADS)

    Elsenbeer, Helmut; Lack, Andreas; Cassel, Keith

    A forested first-order catchment in western Amazonia was monitored for 2 years to determine the chemical fingerprints of precipitation, throughfall, overland flow, pipe flow, soil water, groundwater, and streamflow. We used five tracers (hydrogen, calcium, magnesium, potassium, and silica) to distinguish ``fast'' flow paths mainly influenced by the biological subsystem from ``slow'' flow paths in the geochemical subsystem. The former comprise throughfall, overland flow, and pipe flow and are characterized by a high potassium/silica ratio; the latter are represented by soil water and groundwater, which have a low potassium/silica ratio. Soil water and groundwater differ with respect to calcium and magnesium. The groundwater-controlled streamflow chemistry is strongly modified by contributions from fast flow paths during precipitation events. The high potassium/silica ratio of these flow paths suggests that the storm flow response at La Cuenca is dominated by event water.

  7. An Intelligent Ecosystem for Providing Support in Prehospital Trauma Care in Cuenca, Ecuador.

    PubMed

    Timbi-Sisalima, Cristian; Rodas, Edgar B; Salamea, Juan C; Sacoto, Hernán; Monje-Ortega, Diana; Robles-Bykbaev, Vladimir

    2015-01-01

    According to facts given by the World Health Organization, one in ten deaths worldwide is due to an external cause of injury. In the field of pre-hospital trauma care, adequate and timely treatment in the golden period can impact the survival of a patient. The aim of this paper is to show the design of a complete ecosystem proposed to support the evaluation and treatment of trauma victims, using standard tools and vocabulary such as OpenEHR, as well as mobile systems and expert systems to support decision-making. Preliminary results of the developed applications are presented, as well as trauma-related data from the city of Cuenca, Ecuador. PMID:26262065

  8. Late Holocene anthropogenic and climatic influences on the regional vegetation of Mexico's Cuenca Oriental

    NASA Astrophysics Data System (ADS)

    Bhattacharya, Tripti; Byrne, Roger

    2016-03-01

    Scholars continue to debate the relative magnitude of pre- and post-Conquest anthropogenic landscape transformation in many regions of Mesoamerica. These debates have important implications for our understanding of the role of anthropogenic practices in the development, or at times degradation, of regional environments. Paleoecological records that provide long-term perspectives on climate change and human land-use patterns are critical to addressing these uncertainties. However, many regions of Mexico including the Cuenca Oriental, a semi-arid basin in the rain shadow of the Sierra Madre Oriental, remain poorly studied. We present a new paleoecological record from sediment cores recovered from Lake Aljojuca, located in the southern part of the basin. Stable isotope analyses of authigenic carbonates provide an independent record of past climate, while pollen and microscopic charcoal provide insights into past vegetation and fire history. The Aljojuca record is one of the only well-dated multi-proxy paleolimnological records from the Cuenca Oriental, and is one of few charcoal studies from highland Mexico. Zea mays pollen and increased fire activity at 2700 calendar years before present (cal yr. BP) suggest Formative period human settlement around the lake. Between 1700 and 800 cal yr BP, a drying climate combined with human uses of fire likely resulted in increases in the extent of xeric scrub vegetation. The Aljojuca record also documents important landscape changes during the historic period (~ 430 cal yr. BP-present) likely related to the introduction of invasive species and agricultural intensification. The Aljojuca record provides a unique perspective on human-environment relationships and highlights differences between landscape transformations in the pre- and post-Conquest periods.

  9. Sedimentary record of terminal Cretaceous accretions in Ecuador: The Yunguilla Group in the Cuenca area

    NASA Astrophysics Data System (ADS)

    Jaillard, Etienne; Bengtson, Peter; Ordoñez, Martha; Vaca, Wilmer; Dhondt, Annie; Suárez, Johnny; Toro, Jorge

    2008-03-01

    A reappraisal of the "Late Cretaceous Yunguilla Formation" of the Cuenca area enables the definition of four distinct formations, correlatable with those of southwestern Ecuador. A mid- to late-Campanian marine transgression (Jadán Formation) is overlain by quartz-rich conglomerates of fan-delta to turbiditic fan environment (Quimas Formation) of latest Campanian-earliest Maastrichtian age, which are interpreted as evidence of the accretion of a first oceanic terrane (San Juan). Disconformable, arkosic turbidites and cherts (Tabacay Formation) of early Maastrichtian age are thought to represent the erosion of the newly accreted oceanic terrane. A major unconformity of late Maastrichtian age, caused by the accretion of a second oceanic terrane (Guaranda), is followed by the deposition of quartz-rich micaceous shelf sandstones (Saquisilí Formation) of Paleocene age. A third accretion event (late Paleocene) is recorded in coastal Ecuador. Each accretion event correlates with the uplift and erosion of the Eastern Cordillera and with a sedimentary hiatus in the eastern areas. In Ecuador, accretion of oceanic terranes contributed to the build up of the Andes through tectonic underplating of low-density material, and the eastern areas did not behave as flexural foreland basins during late Cretaceous-Paleogene times.

  10. Cultural implications of late Holocene climate change in the Cuenca Oriental, Mexico

    PubMed Central

    Bhattacharya, Tripti; Byrne, Roger; Böhnel, Harald; Wogau, Kurt; Kienel, Ulrike; Ingram, B. Lynn; Zimmerman, Susan

    2015-01-01

    There is currently no consensus on the importance of climate change in Mesoamerican prehistory. Some invoke drought as a causal factor in major cultural transitions, including the abandonment of many sites at 900 CE, while others conclude that cultural factors were more important. This lack of agreement reflects the fact that the history of climate change in many regions of Mesoamerica is poorly understood. We present paleolimnological evidence suggesting that climate change was important in the abandonment of Cantona between 900 CE and 1050 CE. At its peak, Cantona was one of the largest cities in pre-Columbian Mesoamerica, with a population of 90,000 inhabitants. The site is located in the Cuenca Oriental, a semiarid basin east of Mexico City. We developed a subcentennial reconstruction of regional climate from a nearby maar lake, Aljojuca. The modern climatology of the region suggests that sediments record changes in summer monsoonal precipitation. Elemental geochemistry (X-ray fluorescence) and δ18O from authigenic calcite indicate a centennial-scale arid interval between 500 CE and 1150 CE, overlaid on a long-term drying trend. Comparison of this record to Cantona’s chronology suggests that both the city’s peak population and its abandonment occurred during this arid period. The human response to climate change most likely resulted from the interplay of environmental and political factors. During earlier periods of Cantona’s history, increasing aridity and political unrest may have actually increased the city’s importance. However, by 1050 CE, this extended arid period, possibly combined with regional political change, contributed to the city’s abandonment. PMID:25624470

  11. Cultural implications of late Holocene climate change in the Cuenca Oriental, Mexico.

    PubMed

    Bhattacharya, Tripti; Byrne, Roger; Böhnel, Harald; Wogau, Kurt; Kienel, Ulrike; Ingram, B Lynn; Zimmerman, Susan

    2015-02-10

    There is currently no consensus on the importance of climate change in Mesoamerican prehistory. Some invoke drought as a causal factor in major cultural transitions, including the abandonment of many sites at 900 CE, while others conclude that cultural factors were more important. This lack of agreement reflects the fact that the history of climate change in many regions of Mesoamerica is poorly understood. We present paleolimnological evidence suggesting that climate change was important in the abandonment of Cantona between 900 CE and 1050 CE. At its peak, Cantona was one of the largest cities in pre-Columbian Mesoamerica, with a population of 90,000 inhabitants. The site is located in the Cuenca Oriental, a semiarid basin east of Mexico City. We developed a subcentennial reconstruction of regional climate from a nearby maar lake, Aljojuca. The modern climatology of the region suggests that sediments record changes in summer monsoonal precipitation. Elemental geochemistry (X-ray fluorescence) and δ(18)O from authigenic calcite indicate a centennial-scale arid interval between 500 CE and 1150 CE, overlaid on a long-term drying trend. Comparison of this record to Cantona's chronology suggests that both the city's peak population and its abandonment occurred during this arid period. The human response to climate change most likely resulted from the interplay of environmental and political factors. During earlier periods of Cantona's history, increasing aridity and political unrest may have actually increased the city's importance. However, by 1050 CE, this extended arid period, possibly combined with regional political change, contributed to the city's abandonment. PMID:25624470

  12. Cultural implications of late Holocene climate change in the Cuenca Oriental, Mexico

    NASA Astrophysics Data System (ADS)

    Bhattacharya, Tripti; Byrne, Roger; Böhnel, Harald; Wogau, Kurt; Kienel, Ulrike; Ingram, B. Lynn; Zimmerman, Susan

    2015-02-01

    There is currently no consensus on the importance of climate change in Mesoamerican prehistory. Some invoke drought as a causal factor in major cultural transitions, including the abandonment of many sites at 900 CE, while others conclude that cultural factors were more important. This lack of agreement reflects the fact that the history of climate change in many regions of Mesoamerica is poorly understood. We present paleolimnological evidence suggesting that climate change was important in the abandonment of Cantona between 900 CE and 1050 CE. At its peak, Cantona was one of the largest cities in pre-Columbian Mesoamerica, with a population of 90,000 inhabitants. The site is located in the Cuenca Oriental, a semiarid basin east of Mexico City. We developed a subcentennial reconstruction of regional climate from a nearby maar lake, Aljojuca. The modern climatology of the region suggests that sediments record changes in summer monsoonal precipitation. Elemental geochemistry (X-ray fluorescence) and δ18O from authigenic calcite indicate a centennial-scale arid interval between 500 CE and 1150 CE, overlaid on a long-term drying trend. Comparison of this record to Cantona's chronology suggests that both the city's peak population and its abandonment occurred during this arid period. The human response to climate change most likely resulted from the interplay of environmental and political factors. During earlier periods of Cantona's history, increasing aridity and political unrest may have actually increased the city's importance. However, by 1050 CE, this extended arid period, possibly combined with regional political change, contributed to the city's abandonment.

  13. Prevalence of musculoskeletal disorders and rheumatic diseases in Cuenca, Ecuador: a WHO-ILAR COPCORD study.

    PubMed

    Guevara-Pacheco, Sergio; Feicán-Alvarado, Astrid; Sanín, Luz Helena; Vintimilla-Ugalde, Jaime; Vintimilla-Moscoso, Fernando; Delgado-Pauta, Jorge; Lliguisaca-Segarra, Angelita; Dután-Erráez, Holger; Guevara-Mosquera, Daniel; Ochoa-Robles, Verónica; Cardiel, Mario H; Peláez-Ballestas, Ingris

    2016-09-01

    The aim of this study was to determine the prevalence of musculoskeletal pain and rheumatic diseases in subjects over 18 years of age from the canton of Cuenca, Ecuador. Cross-sectional analytical community-based study was conducted in subjects over 18 years of age using the validated Community-Oriented Program for the Control of Rheumatic Diseases (COPCORD) questionnaire. Random sampling was used. The questionnaire was administered by standardized health workers. Subjects were visited house by house. Subjects positive for musculoskeletal (MSK) pain in the last 7 days and at some point in life were assessed by rheumatologists to confirm the diagnosis. A total of 4877 subjects participated, with an average age of 42.8 (SD 18.8) years of age; 59.7 % were women; 69.7 % lived in urban areas. 32.5 % reported MSK pain in the last 7 days and 45.7 % at some point in life. The prevalence of knee osteoarthritis was 7.4 %, hand osteoarthritis 5.3 %, low back pain 9.3 %, rheumatoid arthritis 0.8 %, fibromyalgia 2 %, gout 0.4 %, and lupus 0.06 %. Subjects from rural areas reported experiencing more MSK pain in the last 7 days and at some point in life, lower income, poorer health-care coverage, and increased physical activity involving repetitive tasks such as lifting weights or cooking with firewood. MSK pain prevalence was high. Osteoarthritis and low back pain were the most common diseases. Age, sex, physical activity, repetitive tasks, living in a rural area, and lack of health-care coverage were found to be associated with MSK pain.

  14. Cultural implications of late Holocene climate change in the Cuenca Oriental, Mexico.

    PubMed

    Bhattacharya, Tripti; Byrne, Roger; Böhnel, Harald; Wogau, Kurt; Kienel, Ulrike; Ingram, B Lynn; Zimmerman, Susan

    2015-02-10

    There is currently no consensus on the importance of climate change in Mesoamerican prehistory. Some invoke drought as a causal factor in major cultural transitions, including the abandonment of many sites at 900 CE, while others conclude that cultural factors were more important. This lack of agreement reflects the fact that the history of climate change in many regions of Mesoamerica is poorly understood. We present paleolimnological evidence suggesting that climate change was important in the abandonment of Cantona between 900 CE and 1050 CE. At its peak, Cantona was one of the largest cities in pre-Columbian Mesoamerica, with a population of 90,000 inhabitants. The site is located in the Cuenca Oriental, a semiarid basin east of Mexico City. We developed a subcentennial reconstruction of regional climate from a nearby maar lake, Aljojuca. The modern climatology of the region suggests that sediments record changes in summer monsoonal precipitation. Elemental geochemistry (X-ray fluorescence) and δ(18)O from authigenic calcite indicate a centennial-scale arid interval between 500 CE and 1150 CE, overlaid on a long-term drying trend. Comparison of this record to Cantona's chronology suggests that both the city's peak population and its abandonment occurred during this arid period. The human response to climate change most likely resulted from the interplay of environmental and political factors. During earlier periods of Cantona's history, increasing aridity and political unrest may have actually increased the city's importance. However, by 1050 CE, this extended arid period, possibly combined with regional political change, contributed to the city's abandonment.

  15. Prevalence of musculoskeletal disorders and rheumatic diseases in Cuenca, Ecuador: a WHO-ILAR COPCORD study.

    PubMed

    Guevara-Pacheco, Sergio; Feicán-Alvarado, Astrid; Sanín, Luz Helena; Vintimilla-Ugalde, Jaime; Vintimilla-Moscoso, Fernando; Delgado-Pauta, Jorge; Lliguisaca-Segarra, Angelita; Dután-Erráez, Holger; Guevara-Mosquera, Daniel; Ochoa-Robles, Verónica; Cardiel, Mario H; Peláez-Ballestas, Ingris

    2016-09-01

    The aim of this study was to determine the prevalence of musculoskeletal pain and rheumatic diseases in subjects over 18 years of age from the canton of Cuenca, Ecuador. Cross-sectional analytical community-based study was conducted in subjects over 18 years of age using the validated Community-Oriented Program for the Control of Rheumatic Diseases (COPCORD) questionnaire. Random sampling was used. The questionnaire was administered by standardized health workers. Subjects were visited house by house. Subjects positive for musculoskeletal (MSK) pain in the last 7 days and at some point in life were assessed by rheumatologists to confirm the diagnosis. A total of 4877 subjects participated, with an average age of 42.8 (SD 18.8) years of age; 59.7 % were women; 69.7 % lived in urban areas. 32.5 % reported MSK pain in the last 7 days and 45.7 % at some point in life. The prevalence of knee osteoarthritis was 7.4 %, hand osteoarthritis 5.3 %, low back pain 9.3 %, rheumatoid arthritis 0.8 %, fibromyalgia 2 %, gout 0.4 %, and lupus 0.06 %. Subjects from rural areas reported experiencing more MSK pain in the last 7 days and at some point in life, lower income, poorer health-care coverage, and increased physical activity involving repetitive tasks such as lifting weights or cooking with firewood. MSK pain prevalence was high. Osteoarthritis and low back pain were the most common diseases. Age, sex, physical activity, repetitive tasks, living in a rural area, and lack of health-care coverage were found to be associated with MSK pain. PMID:27023004

  16. Silicoflagellate Fluxes in Cuenca Alfonso, Mexico During the 2002-2003 El Niño Event

    NASA Astrophysics Data System (ADS)

    Alvarez, I. G.; Martínez-López, A.; Silverberg, N.

    2007-05-01

    Changes in the circulation and water mass patterns in the Gulf of California are closely associated with changes in atmospheric circulation. At the interannual scale, such changes are associated with events like El Niño, which in the Gulf are characterized by greater penetration of tropical-equatorial water. Subsamples of sediment trap material, collected between January 2002 and February 2004 were examined with the aim of inferring average oceanographic conditions in Cuenca Alfonso, Bahia de La Paz and those during the relatively mild 2002- 03 El Niño. Analysis of the silicoflagellate data series reveals seasonal and interannual relationships between the silicoflagellate fluxes and the dynamics of the water column. Comparison of silicoflagellate fluxes with those of the diatom group indicate that the former represent 0-52% of their combined flux. Both silicate groups generally co-vary but show differences in intensity. Thirteen taxa made up the silicoflagellate species composition. The simultaneous occurrence of Dictyocha epiodon and Distephanus speculum with Dictyocha calida and Dictyocha californica during August 2002 to May 2003, indicated the presence of both California Current Water and Equatorial Surface Water in the area close to Cuenca Alfonso. This favored the increase, mainly in November-December, in the flux of the dominant species, Octactis pulchra (as high as 7 x 106 skeletons m-2 day-1). Spring, on the other hand, was notable for a drop in the total silicoflagellate flux, probably due to the influence of the El Niño event. The subsequent increase in species typical of warm water and the replacement of the dominant species (O. pulchra) by Dictyocha messanensis var messanensis, suggest that the effects of El Niño extended to the fall of 2003.

  17. Una visita en Sud America

    NASA Astrophysics Data System (ADS)

    1982-09-01

    Oisfrute de una estadfa en el Hotel La Silla, el mejor hotel de Sud America con su tan unica atmosfera extraterrestre! Los espera su calificado personal de experimentados hoteleros, jefes de cocina, etc., ansiosos todos de satisfacer sus deseos hasta el mas mfnimo detalle. Naturalmente nuestro espacioso restaurant de tres estrellas ofrece un completo surtido de exquisitas comidas y deliciosos tragos (conocedores usualmente eligen "Oelicia Orion" 0 "Centauro Especial"). EI servicio cempleto durante 24 horas incluye nuestra ya mundialmente famosa "Cena de medianoche para los miradores de estrellas", por eso - no olvide: No pierda la oportunidad de una estadfa en EL HOTEL LA SILLA - una experiencia maravillosa!

  18. The Cuenca de Oro, a Pull-Apart Basin Hosting Precious Metal Deposits Along the Re- Activated Seri-Tahue Terrane Boundary

    NASA Astrophysics Data System (ADS)

    Feinstein, M. N.; Goodell, P. C.

    2007-05-01

    At the intersection of Chihuahua, Sonora, and Sinaloa a boundary between the Seri and Tahue terranes has been hypothesized, and further refined as the Sinforosa Lineament. Near the western termination of the Sinforosa Lineament lies a topographic basin. Part of this study will be to better define this pull-apart basin, informally named the Cuenca de Oro due to its numerous precious metal deposits. The intention of this study is to test that the Seri-Tahue terrane boundary was re-energized during the beginning of extension related to the opening of the Sea of Cortez (~30ma). It is probable that the precious metal occurrences are related to the initiation of extension(alunite at El Sauzal has been dated at ~30ma). Five field excursions totaling sixty days of field work have been completed and a first draft of a regional geologic map has been made. Large shear zones support the hypothesis of a pull-apart basin. A study of the alteration and lineament intersections determine the location of many known precious metal deposits. By creating multiple cross-sections the basin can be modeled in three dimensions and a tectonic history can be interpreted. This study will present a structural analysis of the Cuenca de Oro and develop a tectonic history related temporally with the epithermal mineralization events.

  19. Associations of major and trace components in time-series settling particle samples from Cuenca Alfonso, SW Gulf of California

    NASA Astrophysics Data System (ADS)

    Rodríguez-Castañeda, A. P.; Shumilin, E.; Silverberg, N.; Morton-Bermea, O.; Hernandez-Alvarez, E.; Aguirre-Bahena, F.

    2007-12-01

    Cuenca Alfonso is a natural sedimentation basin in Bahía de La Paz, southern Baja California Peninsula, an arid subtropical region characterized by limited land runoff with a productive surface layer overlying a well-developed Oxygen Minimum Zone. A time-series sediment trap program was initiated in 2002 to help understand the processes controlling variations in the biogeochemistry of this environment. INAA, ICP-MS and ICP-OES analyses, as well as flame AAS were made for major and trace elements in 105 subsamples of material collected at 350 m depth during 2002-2005. Principal component analysis, including data for organic and inorganic carbon, biogenic silica and the lithogenic fraction, yielded four factors. Factor 1 (25% of the total variance) showed high eigenvalues for the classical terrigenous aluminosilicate elements: Al, Fe, Mn Sc. High loadings also occurred for the group of light to medium REEs (except for Eu). The latter are frequently associated with acid source rocks, such the granites and rhyolitic volcanics exposed on the margin of the bay. Factor 2 (18%) grouped mainly REEs, with high loading on the heavier members of the series that are more typical of basic rocks (thick sequences of andesitic volcanics occur to the NW), as well as Ni and Rb. Factor 3 (12%) appears to represent carbonate organism production, with high loadings for Cinorg, Ca and moderate levels for Corg and Cu, while %litho is moderately negative, as is biogenic silica. The fourth factor (9%) is characterized by high negative loadings for Cd, Co, Se and moderately negative values for Corg. Moderate positive loadings occur only for Sr and, at lower levels, for U, Sb and %lithogenic. This suggests that this grouping is related to particles that have been partially transformed within the Oxygen Minimum Zone. The results will be examined for distinctive periods within the time-series, such as the hurricane-influenced months of August-September 2003, the generally very low fluxes

  20. Artificial neural networks applied to flow prediction scenarios in Tomebamba River - Paute watershed, for flood and water quality control and management at City of Cuenca Ecuador

    NASA Astrophysics Data System (ADS)

    Cisneros, Felipe; Veintimilla, Jaime

    2013-04-01

    The main aim of this research is to create a model of Artificial Neural Networks (ANN) that allows predicting the flow in Tomebamba River both, at real time and in a certain day of year. As inputs we are using information of rainfall and flow of the stations along of the river. This information is organized in scenarios and each scenario is prepared to a specific area. The information is acquired from the hydrological stations placed in the watershed using an electronic system developed at real time and it supports any kind or brands of this type of sensors. The prediction works very good three days in advance This research includes two ANN models: Back propagation and a hybrid model between back propagation and OWO-HWO. These last two models have been tested in a preliminary research. To validate the results we are using some error indicators such as: MSE, RMSE, EF, CD and BIAS. The results of this research reached high levels of reliability and the level of error are minimal. These predictions are useful for flood and water quality control and management at City of Cuenca Ecuador

  1. Reservoir characterization of a Sandwave-Intersandwave complex in the Albian-Cenomanian in the Serranía de Cuenca (Iberian Basin)

    NASA Astrophysics Data System (ADS)

    Chamizo-Borreguero, M.; Meléndez, N. M.; de Boer, P. L.

    2009-04-01

    Sand waves have been widely recognized in fossil and modern shelf systems, and are commonly considered to be related to marine transgressions in association with tidal currents. They have been studied from different perspectives, hydrodynamics, facies, geometry, and also reservoir potential. A siliciclastic sandwave-intersandwave complex is very well exposed in the upper part of the Calizas de la Bicuerca Member (Calizas de Aras de Alpuente Formation, Albian-Cenomanian, Serranía de Cuenca, Spain). A detailed study was carried out with the aim to characterize (a) the internal structure of the sand bodies, their vertical and lateral facies relationships, geometry, thickness and lateral extension; (b) petrographical and petrophysical properties of each facies and their heterogeneities, and (c) to build a reservoir model on the basis of these parameters. On the basis of a study of 5 outcrops along a 24 km NW-SE transect correlation panels were built. Sand waves are characterized by isolated lenticular bodies with large-scale cross bedding and internal reactivation surfaces and intersandwave facies with greenish sandy dolomitic marls. This complex developed over intertidal flat facies and is covered by open-marine facies which entails the transgressive context. Sand-wave bodies are interbedded in intersandwave facies with vertical and lateral facies transitions. Different types of sand wave have been recognized, characterized by different facies and their distribution. The sand waves have been classified on the basis of grain size, cross bedding (from decimetric to metric scale), foreset dip angle, percentage of bipolar palaeocurrent directions which entails the sand-body (a)symmetry, and the presence or absence of internal reactivation surfaces and mud drapes. Regardless of the differences in these characteristics, all sand-wave bodies show a recurrent vertical evolution from an initial to an abandonment stage, with an upward increase of burrowing intensity and a

  2. Temporal variations of C, N, δ13C, and δ15N in organic matter collected by a sediment trap at Cuenca Alfonso, Bahía de La Paz, SW Gulf of California

    NASA Astrophysics Data System (ADS)

    Aguiñiga, Sergio; Sanchez, Alberto; Silverberg, Norman

    2010-09-01

    To monitor the composition and the vertical flux of particulate matter from the sea surface, a sediment trap was moored in Cuenca Alfonso, Bahía de La Paz, a zone of high productivity in the southwestern Gulf of California. Carbonate-free samples from 2002 to 2005 were analyzed for C org, N, δ13C, and δ15N. The results show seasonal and interannual variability, with the δ13C and δ15N values larger in spring and summer than in fall and winter. The C:N ratio and δ13C increased by 1.5 units from 2002 to 2003-2005, suggesting a change in the supply of organic matter and-or the use or preferential degradation of N org. There was no interannual variation in δ15N. The occasional high δ15N values suggest that physical mechanisms, such as the shoaling and advection into the bay of 15N-rich subsurface equatorial water, occur over short time periods. The latter is presumed to be related to the periodic development of a significant cyclonic gyre in the southern Gulf.

  3. Cambios históricos en el aporte terrígeno de la cuenca del Río de la Plata sobre la plataforma interna Uruguaya

    NASA Astrophysics Data System (ADS)

    Marrero, Analía; Tudurí, Adriana; Pérez, Laura; Cuña, Caroline; Muniz, Pablo; Lopes Figueira, Rubens; Michaelovitch de Mahiques, Michel; Alves de Lima Ferreira, Paulo; Pittauerová, Daniela; Hanebuth, Till; García Rodríguez, Felipe

    2014-12-01

    El Río de la Plata (RdlP) presenta significativas variaciones naturales (hidrodinámicas y oceanográficas) asociadas a diferentes condiciones climáticas. El propósito de este trabajo es inferir los cambios de aportes continentales de sedimentos y su relación con las variaciones hidrológicas del Río de la Plata, a través del análisis de proxies sedimentológicos y geoquímicos en testigos de sedimentos de la plataforma interna uruguaya que registran los últimos 100 años, aproximadamente. A partir de la datación por 210Pb de dos testigos de sedimentos (GeoB 13813-4 y BAR1) se reconstruyó la geocronología del ambiente, y se relacionó con datos de las forzantes climáticas Pacific Decadal Oscillation, El Niño/La Niña Southern Oscillation, Atlantic Multidecadal Oscillation, y las anomalías hidrológicas de los ríos Paraná y Uruguay. Los valores más positivos y estables del Southern Oscillation Index, los cuales corresponden a fases La Niña, se observan en el periodo correspondiente entre 1910-1970, respecto al resto de la serie, donde se aprecia una mayor variabilidad y una tendencia hacia valores más negativos (eventos El Niño). Se hicieron dendrogramas (clustering) jerárquicos para ambos testigos. Para el testigo GeoB 13813-4, se utilizó la relación Ca/Ti y la granulometría, mientras que para BAR1 se recurrió a variables granulométricas y la tasa de sedimentación. El mayor aporte continental hacia la región de la plataforma adyacente al Río de la Plata registrado a partir del año 1970, podría ser el factor principal de los agrupamientos observados en los clusters para ambos testigos. Las agrupaciones mostraron una diferenciación en la década de 1970, lo que estaría asociado al aumento de los caudales de los ríos Paraná y Uruguay, durante las últimas tres décadas del siglo XX. Por otra parte se observa que la granulometría del testigo BAR1 presentó un mayor tamaño de grano y más variabilidad que en el caso del testigo Geo

  4. Consentimiento informado: una praxis dialogica para la investigacion

    PubMed Central

    Mondragon-Barrios, Liliana

    2009-01-01

    El consentimiento informado es un proceso, en el que una persona acepta participar en una investigation, conociendo los riesgos, beneficios, consecuencias o problemas que se puedan presenter durante el desarrollo de la misma. El objetivo de este trabajo es reunir las caracteristicas del proceso de consentimiento informado (PCI) pare que su discernimiento y cumplimiento posibilite el ejercicio etc° dialogico, reflexivo y responsable del investigador. Se presentan los resultados de una extensa revision de les elementos del PCI, desde sus cornponentes hasta su fundamento etico y legal, incluyendo los mites y realidades que existen sobre el formato de consentimiento informado come recurso legal de protection. El consentimiento informado no es un formato establecido que los investigadores repliquen, se trata de que la praxis del PCI sea una tarea cotidiana dentro de la investigation con seres humanos, como comunicaciOn deliberative y critica, responsable y comprometida entre dos agentes morales, investigador-investigado. PMID:19507477

  5. Una búsqueda de la identidad regional em Astrometria

    NASA Astrophysics Data System (ADS)

    Abad, C.

    2003-11-01

    La idea sobre una reunión latino-americana que congregara a las personas que desarrollan su trabajo en el área de la astrometría, se gestó a partir de una de las reuniones que el proyecto QUEST realizaba anualmente en Mérida (Venezuela). El proyecto QUEST (Quasars Equatorial Survey Team) celebraba su IV Reunión Anual, en la cual se hacía una revisón de la marcha del proyecto durante el último año. Además, se exponían los logros científicos y técnicos alcanzados hasta el momento y se planificaba el futuro del mismo para el período anual siguiente.

  6. Una técnica para filtrar patrones de fringing

    NASA Astrophysics Data System (ADS)

    Ostrov, P. G.

    Se presenta una nueva técnica para filtrar los patrones de fringing producidos en los CCDs tipo RCA. El método consiste en construir un mapa con los ángulos de inclinación de las franjas en cada punto de la imagen. Este mapa es ulteriormente utilizado para alinear con el patrón de interferencia una ventana estrecha, sobre la que se aplica un filtro de mediana. Este procedimiento permite eliminar la mayor parte del ruido del patrón de fringing sin destruirlo.

  7. Entropía de la información: una herramienta útil

    NASA Astrophysics Data System (ADS)

    Cincotta, P.

    En este trabajo se presenta una muy breve introducción al concepto de Entropía de la Información y se muestran distintas aplicaciones de una misma técnica para estudiar problemas tan variados como la determinación de periodicidad en una serie de tiempo arbitraria o de estimar el grado de caoticidad de una trayectoria en un sistema dinámico de N grados de libertad.

  8. [Valutare le esperienze positive e negative: la validazione di una nuova misura del benessere in una popolazione italiana].

    PubMed

    Corno, Giulia; Molinari, Guadalupe; Baños, Rosa Maria

    2016-01-01

    RIASSUNTO. Lo scopo del presente studio è quello di esplorare le proprietà psicometriche di uno strumento di misurazione dell'affetto, la Scala di Esperienze Positive e Negative (SPANE), all'interno di una popolazione italiana. Gli esiti dell'analisi fattoriale confermativa comprovano l'attesa struttura a due fattori, sentimenti positivi e negativi. Le correlazioni con altre dimensioni (per es., ansia, depressione, affetto, aspettative future) confermano i risultati ottenuti con le precedenti versioni della scala: affetto negativo, ansia, depressione e aspettative future negative correlano positivamente con la subscala di esperienze negative e negativamente con la subscala di esperienze positive dello SPANE. In conclusione, i risultati del nostro studio dimostrano che la versione italiana dello SPANE presenta caratteristiche psicometriche simili a quelle mostrate dalla versione orginale e da successive validazioni dello strumento in altre lingue. La scala presenta, inoltre, affidabilità e validità fattoriale. Lo SPANE è un indice utile dal punto di vista clinico che può fornire informazioni rilevanti circa l'esperienza emotiva e il benessere della persona. Nonostante ulteriori studi siano necessari per confermare le caratteristiche psicometriche della scala, la presente validazione della versione italiana dello SPANE può contribuire ad ampliare la ricerca nell'ambito del benessere in una popolazione Italiana. PMID:27362822

  9. [Valutare le esperienze positive e negative: la validazione di una nuova misura del benessere in una popolazione italiana].

    PubMed

    Corno, Giulia; Molinari, Guadalupe; Baños, Rosa Maria

    2016-01-01

    RIASSUNTO. Lo scopo del presente studio è quello di esplorare le proprietà psicometriche di uno strumento di misurazione dell'affetto, la Scala di Esperienze Positive e Negative (SPANE), all'interno di una popolazione italiana. Gli esiti dell'analisi fattoriale confermativa comprovano l'attesa struttura a due fattori, sentimenti positivi e negativi. Le correlazioni con altre dimensioni (per es., ansia, depressione, affetto, aspettative future) confermano i risultati ottenuti con le precedenti versioni della scala: affetto negativo, ansia, depressione e aspettative future negative correlano positivamente con la subscala di esperienze negative e negativamente con la subscala di esperienze positive dello SPANE. In conclusione, i risultati del nostro studio dimostrano che la versione italiana dello SPANE presenta caratteristiche psicometriche simili a quelle mostrate dalla versione orginale e da successive validazioni dello strumento in altre lingue. La scala presenta, inoltre, affidabilità e validità fattoriale. Lo SPANE è un indice utile dal punto di vista clinico che può fornire informazioni rilevanti circa l'esperienza emotiva e il benessere della persona. Nonostante ulteriori studi siano necessari per confermare le caratteristiche psicometriche della scala, la presente validazione della versione italiana dello SPANE può contribuire ad ampliare la ricerca nell'ambito del benessere in una popolazione Italiana.

  10. Radioastronomía: Una Mirada Más Amplia

    NASA Astrophysics Data System (ADS)

    Bianchi, Viviana

    2004-12-01

    The existence of the celestial bodies is known due to the light they emit. But light is a small part of a bigger phenomenon known as electromagnetic radiation. The representation of all kinds of electromagnetic radiation as a function of its frequency is called the electromagnetic spectrum. If we only studied the visible part of the spectrum, we would ignore a great deal of information. The celestial bodies emit radiation in all the regions of the electromagnetic spectrum, with very different intensity. To capture these data, astronomers design new types of telescopes that capture radiation at different wavelengths, among them the radiotelescopes that, as the name indicates, detect radio waves. The radiotelescope can be compared to a regular radio set. A radio station sends information by means of radio waves. The radio set captures these waves by means of its antenna, processes it and reproduces the information (music, etc.) in audible form. In the field of radioastronomy, interesting observations can be carried out: radio emission from stars, nebulas, pulsars, distant galaxies and stars, radiogalaxies, the Milky Way, the Sun, Jupiter, etc. La presencia de los cuerpos celestes se conoce gracias a que emiten luz. Pero la luz constituye solo una pequeña parte de un fenómeno mucho mas amplio conocido como radiación electromagnética. La representación de todas las clases de radiación como función de su frecuencia se denomina espectro electromagnético. Si solo estudiáramos la parte visual del espectro ignoraríamos una gran cantidad de información. Los cuerpos celestes emiten radiación en todas las regiones del espectro electromagnético, aunque con muy distinta intensidad. Para captar estos datos, los astrónomos deben diseñar nuevos tipos de telescopios que puedan captar la radiación de distintas longitudes de ondas, entre ellos los radiotelescopios, qué como su nombre lo indica detectan ondas de radio. El radiotelescopio puede compararse a un aparato

  11. Allele-Selective Inhibition of Huntingtin and Ataxin-3 Expression by RNA Duplexes Containing Unlocked Nucleic Acid (UNA) Substitutions

    PubMed Central

    Aiba, Yuichiro; Hu, Jiaxin; Liu, Jing; Xiang, Qin; Martinez, Carlos; Corey, David R.

    2014-01-01

    Unlocked nucleic acid (UNA) is an acyclic analog of RNA that can be introduced into RNA or DNA oligonucleotides. The increased flexibility conferred by the acyclic structure fundamentally affects the strength of base-pairing, createing opportunities for improved applications and new insights into molecular recognition. Here we test how UNA substitutions affect allele-selective inhibition of trinucleotide-repeat genes Huntingtin (HTT) and Ataxin-3 (ATX-3) expression. We find that the either the combination of mismatched bases and UNA substitutions or UNA substitutions alone can improve potency and selectivity. Inhibition is potent and selectivities of > 40-fold for inhibiting mutant versus wild-type expression can be achieved. Surprisingly, even though UNA preserves the potential for complete base-pairing, the introduction of UNA substitutions at central positions within fully complementary duplexes leads to >19-fold selectivity. Like mismatched bases, the introduction of central UNA bases disrupts the potential for cleavage of substrate by Argonaute 2 (AGO2) during gene silencing. UNA-substituted duplexes are as effective as other strategies for allele-selective silencing of trinucleotide repeat disease genes. Modulation of AGO2 activity by the introduction of UNA substitutions demonstrates that backbone flexibility is as important as base-pairing for catalysis of fully complementary duplex substrates. UNA can be used to tailor RNA silencing for optimal properties and allele-selective action. PMID:24266403

  12. Una propuesta para el desarrollo de un arreglo de síntesis de apertura

    NASA Astrophysics Data System (ADS)

    Arnal, E. M.

    Los estudios llevados a cabo en la transición del hidrógeno neutro a λ~21-cm han contribuído a incrementar nuestro conocimiento acerca de las propiedades globales del medio interestelar, sea este galáctico o extragaláctico. Avances en este campo han sido provocados, a menudo, por la puesta en servicio de radiotelescopios que poseen una mayor resolución angular. Aquí se presenta una propuesta para desarrollar un nuevo instrumento, un interferómetro, que permitirá abrir nuevas líneas de investigación. Este instrumento combinará la técnica de síntesis de apertura con la de espectroscopía de correlación digital, para alcanzar una resolución angular de 1' y un campo de visión de ~1o.7.

  13. Batkoa apiculata (Thaxter) Humber affecting Anopheles (Diptera: Culicidae) in the municipality of Una, Southern Bahia, Brazil

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Surveys for fungal pathogens affecting adult mosquitoes from the genus Anopheles were conducted in flooded and swamp-like natural breeding sites near residences in the center and suburbs of the city of Una as well as the nearby village of Outeiro in southern Bahia. Surveys of 54 mosquito breeding si...

  14. Landscape Terms and Place Names in the Trobriand Islands--The Kaile'una Subset

    ERIC Educational Resources Information Center

    Senft, Gunter

    2008-01-01

    After a brief introduction to the topic the paper first gives an overview of Kilivila landscape terms and then presents the inventory of names for villages, wells, island points, reef-channels and gardens on Kaile'una Island, one of the Trobriand Islands in the Milne Bay Province of Papua New Guinea. The data on the meaning of the place names…

  15. Encendiendo una Llama. Bilingual Gifted and Talented Program: Overview, Identification of Students, and Instructional Approaches.

    ERIC Educational Resources Information Center

    Hartford Public Schools, CT.

    Three pamphlets describe facets of "Encendiendo Una Llama," a Hartford (Connecticut) demonstration program for bilingual gifted and talented students. An overview pamphlet summarizes key aspects of the model program: identification procedures, instructional services, teacher training, parent involvement, evidence of effectiveness, implementation…

  16. Year One Evaluation of "Encendiendo Una Llama" Bilingual Gifted and Talented Program. Report 80-12.

    ERIC Educational Resources Information Center

    Barstow, Daniel; Roby, Wallace R.

    The document reports activities of "Encendiendo Una Llama," a bilingual gifted and talented program serving 60 students in grades K through 6 in a school day resource room component or in an after school program. Twelve program objectives are outlined in terms of proposed activities, proposed evaluation, actual results, and interpretation of…

  17. Cultivating "Una Persona Educada: A Sentipensante" (Sensing/Thinking) Vision of Education

    ERIC Educational Resources Information Center

    Rendon, Laura I.

    2011-01-01

    This essay focuses on the need to educate the new "persona educada", a dignified, honorable person with a good measure of social and personal responsibility who also possesses the habits of the mind and heart. To cultivate "una persona educada" requires a newly formed vision of education and pedagogy. Examples of three entrenched agreements that…

  18. Assessing channel migration on decadal scales at Una inlet (Peruíbe, Brazil)

    NASA Astrophysics Data System (ADS)

    Chagas, F. M.; Ribeiro, J.; Italiani, D. M.; Siegle, E.; Coastal Dynamics Laboratory

    2013-05-01

    Inlets are often cited as ecologically important areas, been frequent subject of study in marine sciences and engineering. Controlling forces of these complex systems are the tidal variation, waves, sediment budget, river outflow and local morphology. Over years, migration can occur alongshore or crosshore as dynamic equilibrium occurs or one of dominant forces varies. The goal of this study is to analyze decadal migration of Una inlet over 1962 to 2006, by means of aerial photographs comparison and computational measurements of coastline variation, indicating physical controlling patterns that act over southern coastal area of Sao Paulo state. Una River (also locally named as Una do Prelado) is part of the main drainage basin of Juréia Ecological Reserve at Peruíbe, southern coast of Sao Paulo state, Brazil. It is 57 km long surrounding almost completely the Juréia Massif, reaching the sea through the Barra do Una inlet. Morphologically, Una beach at Barra do Una can be classified as intermediate or dissipative, composed mainly by very fine sand, well selected due to waves and microtidal currents. Available aerial photographs range from 1962 to 2006. These images have been analyzed and three mosaics were selected to represent the decadal evolution. Images were georeferenced through the ENVI software by RST method using nearest neighbor interpolation. Both inlet margins were digitalized considering the vegetation line as limit border of water-land. For migration calculations, a hand-picked longitudinal transect was established over the inlet, in which 10 parallel segments automatic calculate the horizontal variations over digitalized data at ArgGIS 9.3 system. Through this method, the main direction of channel migration (lateral movement southwest-northeast) was obtained. Upstream transects showed small variations of line margins, typically under 40 m, indicating a relative lateral stability area on the inlet. From transect #4 downstream direction, margin

  19. La binaria LSS 3074 y su entorno: ?`una nueva asociación OB?

    NASA Astrophysics Data System (ADS)

    Niemela, V.; Morrell, N.; Corti, M.

    En este trabajo presentamos un nuevo análisis orbital de LSS~3074, junto con tipos espectrales y velocidades radiales de estrellas que podrían constituir con ella una nueva asociación OB. La estrella O4f LSS3074 fue descubierta como binaria espectroscópica de corto período y líneas dobles por Morrell & Niemela (1990, ASP Conf. Ser. 7, 57). Posteriormente, Haefner et~al.(1994, IBVS 3969) encontraron variaciones fotométricas, estimando una inclinación orbital entre 50o y 55o. Teniendo en cuenta la importancia de obtener valores empíricos para las masas de estrellas O tempranas, y considerando la gran dispersión existente entre los valores observados y su discrepancia con los predichos por los modelos teóricos, hemos obtenido nuevas observaciones espectroscópicas de este sistema, con el propósito de mejorar los elementos orbitales derivados en la solución preliminar. Además, como las estrellas O tempranas suelen formar parte de cúmulos y asociaciones OB, hemos llevado a cabo una investigación espectroscópica de varias estrellas tempranas que podrían estar físicamente relacionadas con LSS~3074.

  20. Pasado, presente y futuro de la epidemiología. Una perspective latinoamericana

    PubMed Central

    Morabia, Alfredo

    2015-01-01

    Este artículo intenta contestar tres preguntas. Sobre el pasado: ¿Por qué no existió una epidemiología precolombina? Sobre el presente: ¿Cuáles son los orígenes de la epidemiología moderna, incluyendo sus raíces sudamericanas? Y sobre el futuro, escogí un título surrealista para enfatizar el hecho que estoy consciente de que es siempre delicado hacer predicciones: ¿Por qué fenómenos complejos son los “objetos oscuros del deseo” epidemiológico? PMID:25124247

  1. Observaciones del disco solar y de una protuberancia quiescente en radiación ultravioleta

    NASA Astrophysics Data System (ADS)

    Cirigliano, D.; Vial, J.-C.; Rovira, M.

    Observaciones del disco solar y de una protuberancia quiescente en el rango de longitudes de onda ultravioleta fueron obtenidas con el instrumento CDS (Coronal Diagnostic Spectrograph) y SUMER (Solar Ultraviolet Measurements of emitted radiation) a bordo de la sonda SOHO. El propósito es investigar las velocidades macroscópicas de varias especies metálicas que se observan tanto en el disco solar como en el plasma de las protuberancias. Para calcular las velocidades del disco solar aplicamos una técnica mixta para modelar la distribución de estructuras en UV en el Sol quieto. Las velocidades macroscópicas en las protuberancias se calcularon a partir de los corrimientos Doppler en cada línea espectral y luego se tomaron las del disco solar como referencia. Obtuvimos valores absolutos para las velocidades macroscópicas entre 5 y 40 km/seg. También detectamos comportamientos diferentes en las velocidades de las protuberancias en el centro con respecto a los bordes.

  2. Desarrollo curricular, conciencia ambiental y tecnologia para estudiantes de intermedia: Una investigacion en accion

    NASA Astrophysics Data System (ADS)

    Rodriguez Ramos, Teresita

    Se llevó a cabo una investigación en acción con los propósitos de 1) documentar las relaciones de las tecnologías de la información y la comunicación en las clases de ciencias de escuela intermedia como elemento de apoyo cuando se aborda el tema ambiental y sus conceptos pertinentes, a partir de las observaciones de la investigadora, así como las entrevistas y diarios reflexivos de los estudiantes de una escuela intermedia en la zona metropolitana, y luego 2) diseñar una unidad instruccional sobre el tema ambiental que integre actividades tecnologías para el curso de ciencias de la escuela intermedia según el modelo PROCIC y las observaciones que hayan iniciado los estudiantes participantes. Finalmente, se plantearon las implicaciones educativas para el currículo del Programa de Ciencias al instrumentar este modelo de unidad mediante PROCIC, e integrado la tecnología y el tema ambiental. Los hallazgos se analizaron y se categorizaron de acuerdo con las preguntas de investigación. El hallazgo principal de la investigación aborda las cuatro relaciones centrales en las que se articula la utilización de las tecnologías y sus aplicaciones en la clase de ciencias. Estas cuatro relaciones que recogen la posición de los estudiantes son: 1) Perspectiva de los estudiantes hacia la tecnología. 2) Participación de los estudiantes en los aspectos docentes. 3) Aprendizaje estudiantil sobre el ambiente, y 4) Conciencia ambiental en relación con la vida diaria. Estas relaciones ponen de manifiesto,cómo se plantea en las implicaciones, la necesidad de más investigación en acción en la sala de clases, la importancia—como tema transversal—de la conciencia ambiental mediante la tecnología al construir conocimientos significativos dentro y fuera de la escuela, asó como, valorar la investigación y la dialogicidad en la sala de clases como actividades que obligan al reexamen de la práctica didáctica en su formas curriculares de objetivos, recursos

  3. 1981-82 Project Evaluation for Encendiendo Una Llama: A Program for Bilingual Gifted and Talented Students.

    ERIC Educational Resources Information Center

    Roby, Wallace

    The operation of "Encendiendo Una Llama," Hartford, Connecticut's program for bilingual gifted students, was evaluated for the 1981-82 school year. A total of 173 gifted children of limited English proficiency in grades 3 through 6 were served by the program at four locations. The program, staff, objectives, and target population are described.…

  4. A quencher-free molecular beacon design based on pyrene excimer fluorescence using pyrene-labeled UNA (unlocked nucleic acid).

    PubMed

    Karlsen, Kasper K; Okholm, Anders; Kjems, Jørgen; Wengel, Jesper

    2013-10-15

    A quencher-free molecular beacon capable of generating pyrene excimer fluorescence has been constructed using strategically positioned pyrene-UNA monomers. Hybridization of a fully complementary RNA target was accompanied by a pyrene excimer emission increase of more than 900%, and detection of RNA in living cells was demonstrated.

  5. [Influence of antioxidant phenovin and immunomodulator Una de gato on free radical oxidation at parodontitis].

    PubMed

    Gogebashvili, N N; Dzhashi, L M; Datunashvili, I V; Intskirveli, N A; Kiparoidze, L I

    2009-04-01

    The aim of the research: detection of changes in free radical oxidation at treatment of parodontitis with combination of preparations - antioxidant Phenovin and immunomodulator Una de gato. Reactive compounds of nitrogen, oxygen and lipids in saliva, blood and gingival tissue of patients suffering from moderate form of parodontitis has been studied by means of the electronic paramagnetic resonance (EPR) method and spin-traps (DETC, DMPO, PBN - Sigma). In patients with parodontitis content of free NO in saliva and blood increases, while in gingival tissue - decreases. In saliva, blood and gingival tissue of patients intense EPR signals of superoxidradicals (O2(-)) and lipoperoxides (LOO(-)) has been revealed indicating intensification of processes of lipid peroxidation in oral cavity, as well as in whole organism of patient. Exaggerated synthesis of NO in saliva and blood of patient is determined by high- expression of inducible NO-synthase triggered by oxidative stress, and increased activity of neuronal NO-synthase in saliva as a result of high concentrations of metacholine and P substance intensely secreted at parodontitis. Decreased content of free NO in gingival tissue of patients with parodontitis compared to control is the result of biological degradation of nitric oxide (conversion of NO into peroxinitrite on the background of intense oxidative stress in oral cavity) and nitrosylation of mitochondrial electron transport proteins of gingival tissue (characteristic for parodontitis) with further decrease in content of free oxide, suppression of intensity of mitochondrial respiration, energogenesis, development of ischemia in oral tissue leading to further initiation of destructive processes and progression of parodontitis. Treatment with combination of preparations - Phenovin and Una de gato decreased intensity of oxidative stress in organism of patients and reduced destructive processes of tissues in oral cavity. Relative normalization of oxidative metabolism

  6. La reconstrucción del seno después de una mastectomía

    Cancer.gov

    Hoja informativa que describe la reconstrucción del seno (mama) después de una mastectomía. Contiene información sobre las opciones quirúrgicas, los cuidados de seguimiento y los exámenes de detección del cáncer de seno después de la reconstrucción.

  7. Vigilando la Calidad del Agua de los Grandes Rios de la Nacion: El Programa NASQAN del Rio Grande (Rio Bravo del Norte)

    USGS Publications Warehouse

    Lurry, Dee L.; Reutter, David C.; Wells, Frank C.; Rivera, M.C.; Munoz, A.

    1998-01-01

    La Oficina del Estudio Geologico de los Estados Unidos (U.S. Geological Survey, 0 USGS) ha monitoreado la calidad del agua de la cuenca del Rio Grande (Rio Bravo del Norte) desde 1995 como parte de la rediseiiada Red Nacional para Contabilizar la Calidad del Agua de los Rios (National Stream Quality Accounting Network, o NASOAN) (Hooper and others, 1997). EI programa NASOAN fue diseiiado para caracterizar las concentraciones y el transporte de sedimento y constituyentes quimicos seleccionados, encontrados en los grandes rios de los Estados Unidos - incluyendo el Misisipi, el Colorado y el Columbia, ademas del Rio Grande. En estas cuatro cuencas, el USGS opera actualmente (1998) una red de 40 puntos de muestreo pertenecientes a NASOAN, con un enfasis en cuantificar el flujo en masa (la cantidad de material que pasa por la estacion, expresado en toneladas por dial para cada constituyente. Aplicacando un enfoque consistente, basado en la cuantificacion de flujos en la cuenca del Rio Grande, el programa NASOAN esta generando la informacion necesaria para identificar fuentes regionales de diversos contaminantes, incluyendo sustancias qui micas agricolas y trazas elementos en la cuenca. EI efecto de las grandes reservas en el Rio Grande se puede observar segun los flujos de constituyentes discurren a 10 largo del rio. EI analisis de los flujos de constituyentes a escala de la cuenca proveera los medios para evaluar la influencia de la actividad humana sobre las condiciones de calidad del agua del Rio Grande.

  8. Infection by UNA virus (Alphavirus; Togaviridae) and risk factor analysis in black howler monkeys (Alouatta caraya) from Paraguay and Argentina.

    PubMed

    Díaz, Luis Adrián; Díaz, María del Pilar; Almirón, Walter Ricardo; Contigiani, Marta Silvia

    2007-10-01

    A neutralizing antibody (NTAb) survey on UNA and Mayaro viruses in black howler monkeys (Aloutta caraya) from subtropical regions of Argentina and Paraguay was carried out. Risk factors for infection in monkeys were analyzed. No positive sera for Mayaro virus were detected. A prevalence of 73% (61/84) of NTAb against UNAV was detected with titers ranging from 20 to 1280. According to the statistical analysis performed, the monkey's age was a significant risk factor, but not the origin or sex. This is the first report of Alouatta caraya infection by UNAV and the first record of its activity in Paraguay.

  9. Regiones de formación de la línea de He II λ 1640 en una atmósfera en expansión

    NASA Astrophysics Data System (ADS)

    Venero, R.; Cidale, L.; Ringuelet, A.

    Se calculan perfiles de la línea del He II λ1640 empleando un modelo de atmósfera en expansión con una estructura cromosférica para determinar la región de formación de la línea. El problema se trata en geometría esférica, fuera de equilibrio termodinámico. La ecuación de transporte radiativo se resuelve rigurosamente en el marco de referencia del fluído para distintas leyes de velocidad, monótonamente crecientes, y diferentes leyes de temperatura. Se buscan relaciones globales entre las características del perfil y los parámetros físicos atribuídos a la atmósfera estelar, con la finalidad de definir una herramienta de diagnóstico de las propiedades del medio.

  10. "Una Luna Brilla."

    ERIC Educational Resources Information Center

    Teaching Music, 2002

    2002-01-01

    Focuses on the "World's Largest Concerts" listing various songs to be sung by students. Includes teaching tips in the form of quotes from music teachers on aspects of music education, such as teaching rhythm. Includes information on how to access the songs. (CMK)

  11. Geomorphological significance of the palaeodrainage network on a karst plateau: The Una-Korana plateau, Dinaric karst, Croatia

    NASA Astrophysics Data System (ADS)

    Bočić, Neven; Pahernik, Mladen; Mihevc, Andrej

    2015-10-01

    Karst plateaus often have a complex geological and geomorphological history. It is widely accepted that their development requires a long period of karst denudation. This study reconstructs the palaeodrainage network of a karst plateau, analyses its properties and establishes its geomorphological significance. The main purpose of this research was to deepen our understanding of a key stage in the evolution of karst plateaus - the transition from a fluvial land surface to one dominated by karst surface processes. The study was conducted on a large part of the Una-Korana plateau, the largest plateau in the Dinaric karst. The majority of the plateau is made of carbonate rocks of Triassic, Jurassic and Cretaceous age that set the conditions for the development of the karst. We have reconstructed the palaeodrainage network based on 1:25,000 topographic maps with 10 m contours. The transition of the surface drainage network to the underground karst drainage network is still in progress, so, depending on the degree of karstification, the drainage network was divided into three categories: active, dry and relict. It was found that 90.5% of the pre-existing drainage network has undergone some degree of karstification. The active surface drainage network gradually shifted to a dry network, then to a relict network. The surface drainage network is gradually replaced by a dense network of dolines. Today, the flat and karstified inter-fluvial area is drained underground towards the main watercourses and these drain the entire region over the surface towards the Pannonian basin. This is the largest known karst palaeodrainage network in the Dinaric karst that has been reconstructed in this way.

  12. El Instituto Nacional del Cáncer de EE. UU. y Perú firman una Declaración de Intención

    Cancer.gov

    El Instituto Nacional del Cáncer y la República del Perú firmaron una declaración de intención para compartir el interés en fomentar la investigación biomédica de oncología, basándose en la colaboración mutua de ambas entidades, así como el objetivo común

  13. Informe Anual a la Nación sobre el Estado del Cáncer con una sección especial sobre la prevalencia d

    Cancer.gov

    El Informe Anual a la Nación sobre el Estado del Cáncer (1975 a 2010), mostró un descenso más acelerado que en años anteriores de los índices de mortalidad por cáncer de pulmón. También contiene una sección especial que destaca los efectos significativos

  14. Tratamiento Quirúrgico de los Meningiomas del Foramen Óptico, Técnicay Resultados de una Serie de 18 Pacientes

    PubMed Central

    Goldschmidt, Ezequiel; Ajler, Pablo; Campero, Álvaro; Landriel, Federico; Sposito, Maximiliano; Carrizo, Antonio

    2014-01-01

    Introducción: los meningiomas del foramen óptico producen un rápido deterioro de la función visual aún cuando su tamaño es pequeño, por eso su diagnóstico y manejo difiere del resto de los meningiomas clinoideos. El propósito de este estudio es presentar la técnica y los resultados de nuestro manejo quirúrgico de meningiomas foraminales (MF). Pacientes y Métodos: se llevó a cabo una revisión de las historias clínicas de 47 pacientes con meningiomas primarios intraorbitarios. Se realizaron 52 cirugías en los pacientes con MF. Se empleó una craneotomía fronto-orbitaria, seguida de una descompresión extradural del canal óptico, resección del componente intraorbitario y exploración intradural del nervio óptico. Resultados: de los 12 pacientes con MF que presentaban la visión conservada, la agudeza visual fue preservada en 7 casos, mejoró en 2, y empeoró en 3. En 18 pacientes, el principal síntoma fue exoftalmos y en 35 pacientes ceguera unilateral. Ocurrieron 6 recurrencias, 2 a 10 años después de la resección quirúrgica. Cinco de ellos fueron reoperados. Se indicó radioterapia después de la recurrencia en 3 pacientes. Conclusión: el manejo de los MF continúa siendo controvertido y frecuentemente se propone un tratamiento conservador. Basados en nuestros hallazgos de frecuente extensión intracraneal, proponemos realizar una resección total o subtotal del tumor, preservando el nervio óptico en pacientes con visión prequirúrgica conservada. PMID:25165616

  15. Hydrometric and hydrochemicai evidence for fast flowpaths at La Cuenca, Western Amazonia

    NASA Astrophysics Data System (ADS)

    Elsenbeer, Helmut; Lack, Andreas

    1996-05-01

    A hydrological reconnaissance study in a first-order tropical rainforest catchment in western Amazonia implicated overland flow as an important hydrological pathway. A complementary hydrometric and hydrochemical approach that involved the recording of overland flow hydrographs and the determination of streamflow, overland flow, groundwater, soil water, and throughfall chemical signatures, was essential to establish unambiguously the importance of this pathway. Largely uncontrolled by topography, overland flow does occur in any season, regardless of antecedent moisture conditions, which only influence the volumes generated. The latter effect is also reflected in a close approximation of stormflow and overland flow chemical signatures, as expressed in the K/SiO ratio. We conclude that, despite its greater logistical demands, a complementary hydrometric/hydrochemical approach is essential to understand a catchment's hydrological behaviour, especially where fast pathways are at work; such pathways are apparently common in more forest ecosystems than has been previously assumed.

  16. Groundwater in steppe environments: "El Hito" Lagoon wetland as a case of study (Cuenca; Spain)

    NASA Astrophysics Data System (ADS)

    Sastre-Merlín, A.; Martínez-Pérez, S.; Molina-Navarro, E.

    2012-04-01

    El Hito Lagoon wetland, located in the interfluve of the upper basins of the Cigüela and Záncara rivers (Guadiana Basin, central Spain), configures an important element of geo-environmental heritage of Castilla-LaMancha (Natural Reserve), as well as being an area recognized as Ramsar Site and integrated in the Natura 2000 Network. It has an extension around 290 ha in the periods of maximum flooding and it is embedded in an endorheic basin of 42 Km2. The area that includes it has an arid appearance in a landscape dominated by extensive agriculture, being catalogued as "without aquifers" under its unfavorable geo-hydrological substrate. Thereby, the manifestation of the wetland has been attributed to the simple accumulation of precipitation water in the rainy periods. However, studies to date show the contribution of groundwater to the dynamics of this geo-system, showing how the lake basin behaves itself like a diffuse discharge area of groundwater flow to the endorheic in which it is located. This paper shows the most relevant data to understand the functioning of this wetland of great scientific and environmental importance, as it support interesting halophytic plant communities as well as large number of waterflow and steppe birds.

  17. Diseno de una Actividad de Aprendizaje Basada en la Argumentacion Dialogica en un curso Virtual de Biotecnologia y su Incidencia en el Desarrollo de Competencias Cientificas

    NASA Astrophysics Data System (ADS)

    Ortiz Benavides, Fedra Lorena

    El proposito de la investigacion fue evaluar la efectividad de una actividad de aprendizaje basado en la argumentacion dialogica en linea y su incidencia en el desarrollo de competencias cientificas. Se fundamenta en la teoria del aprendizaje socio cultural de Vigotsky (1984), los principios del diseno instruccional de la cognicion situada por Hung y Der-Thang (2001) y como estrategia se aplico la argumentacion dialogica utilizando el Modelo Argumentativo de Toulmin MAT (1984). El diseno experimental comparo dos grupos de estudiantes A y B en el curso virtual de Biotecnologia. El grupo A (experimental) desarrollo la discusion a partir de la estrategia disenada para este estudio y el grupo B (control) realizo la discusion desde las actividades tradicionales. El desarrollo de la competencia argumentativa se valoro con el instrumento de evaluacion para argumentacion dialogica en linea propuesta por Clark y Sampson (2008). La evaluacion de las competencias cientificas se realizo a partir de una postprueba. Los datos fueron analizados con pruebas estadisticas no parametricas. Los resultados de la investigacion, indicaron diferencias significativas en el nivel de la competencia argumental en el grupo experimental en comparacion al grupo control. Igualmente se demostro que existe una relacion positiva entre el nivel de desarrollo de la competencia argumentativa y el nivel de desarrollo de las competencias cientificas.

  18. Identification of Suitable Water Harvesting Zones Based on Geomorphic Resources for Drought Areas: A Case Study of Una District, Himachal Pradesh, India.

    NASA Astrophysics Data System (ADS)

    Prakasam, D. C., Jr.; Zaman, B.

    2014-12-01

    Water is one of the most vital natural resource and its availability and quality determine ecosystem productivity, both for agricultural and natural systems. Una district is one of the major potential agricultural districts in Himachal Pradesh, India. More than 70% of the population of this district is engaged in agriculture and allied sectors and major crops grown are maize, wheat, rice, sugarcane, pulses and vegetables. The region faces drought every year and about 90 per cent of the area is water stressed. This has resulted in crop loss and shortage of food and fodder. The sources of drinking water, small ponds and bowlies dry-up during summer season resulting in scarcity of drinking water. Una district receives rainfall during monsoons from June to September and also during non-monsoon period (winter). The annual average rainfall in the area is about 1040 mm with 55 average rainy days. But due to heavy surface run-off the farmers not able to cultivate the crops more than once in a year. Past research indicate that the geomorphology of the Una district might be responsible for such droughts as it controls the surface as well as ground water resources. The research proposes to develop a water stress model for Una district using the geomorphic parameters, water resource and land use land cover data of the study area. Using Survey of India topographical maps (1:50000), the geomorphic parameters are extracted. The spatial layers of these parameters i.e. drainage density, slope, relative relief, ruggedness index, surface water body's frequency are created in GIS. A time series of normalized remotely sensed data of the study area is used for land use land cover classification and analyses. Based on the results from the water stress model, the drought/water stress areas and water harvesting zones are identified and documented. The results of this research will help the general population in resolving the drinking water problem to a certain extent and also the

  19. Reconexión magnética en una región activa en decaimiento

    NASA Astrophysics Data System (ADS)

    Mandrini, C. H.; Démoulin, P.; van Driel-Gesztelyi, L.; Schmieder, B.; Bagalá, L. G.; Rovira, M. G.

    Se han obtenido observaciones desde Tierra (Hα y magnetogramas) coordinadas con el Soft X-ray Telescope (SXT), a bordo del satélite japonés Yohkoh, de una región activa bipolar en decaimiento. Estos datos constituyen la base para el estudio de un punto brillante en rayos X (PBX) y de la actividad relacionada con el mismo en distintas capas de la atmósfera solar. Las observaciones muestran que el PBX está relacionado con la aparición de un bipolo menor (~ 1020 Mx) y que su abrillantamiento continuo, así como sus aumentos de brillo esporádicos (``fulguraciones"), son el resultado de la reconexión entre el pequeño arco emergente (visto en Hα como un sistema de filamentos arqueados, SFA) y arcos mayores asociados al campo facular preexistente. Se ha extrapolado el campo magnético observado en la aproximación libre de fuerzas lineal y se ha seguido su evolución a lo largo de la vida del PBX. Se ha calculado la posición de las cuasiseparatrices (CSs) a partir del campo modelado. Las líneas de campo extrapoladas, cuyas bases fotosféricas se encuentran a ambos lados de las CSs, están de acuerdo con las estructuras cromosféricas y coronales observadas. Se ha calculado el espesor de la CD ubicada a lo largo de la polaridad negativa emergente, encontrándose que su variación está de acuerdo con la evolución de la intensidad del PBX; la CS es muy delgada durante la vida del PBX (~ 100 m), mientras que su espesor aumenta considerablemente (>= 10^4 m) cuando el PBX desaparece de las imágenes del SXT. Estos resultados señalan que el abrillantamiento y las ``fulguraciones" de este PBX se deben al proceso de reconexión en 3D que tiene lugar en las CSs.

  20. Evolución de estrellas enanas blancas en el contexto de una constante de gravitación G variable en el tiempo

    NASA Astrophysics Data System (ADS)

    Benvenuto, O. G.; Althaus, L. G.; Torres, D. F.

    En este trabajo se estudia por primera vez de manera autoconsistente la evolución de las estrellas enanas blancas en el caso de una constante de gravitación G variable en el tiempo. Teniendo en cuenta que: 1) las enanas blancas son en general estrellas muy viejas y 2) su fuente de energía es básicamente de origen térmico y gravitacional, estos objetos son en principio muy adecuados para analizar distintas teorías de gravitación. Los cálculos que aquí presentamos fueron realizados utilizando nuestro código de evolución estelar, el cual calcula la evolución de estrellas enanas blancas por medio del esquema iterativo de Henyey. Dicho código, basado en una descripción física muy detallada, ha sido modificado para tener en cuenta la variación del valor de G. Encontramos que un G variable (decreciente en el tiempo) modifica fuertemente la evolución de las enanas blancas, conduciendo a un rápido enfriamiento de la estrella. Nuestros resultados son comparados con recientes datos observacionales sobre la función de luminosidad de las enanas blancas.

  1. EL PROGRAMA CITI: UNA ALTERNATIVA PARA LA CAPACITACIÓN EN ÉTICA DE LA INVESTIGACIÓN EN AMÉRICA LATINA

    PubMed Central

    Litewka, Sergio; Goodman, Kenneth; Braunschweiger, y Paul

    2011-01-01

    El Programa CITI (Collaborative Institutional Training Initiative) es un curso basado en Internet y desarrollado por voluntarios, que brinda material educacional sobre protección de sujetos humanos en investigaciones biomédicas y de conducta, buenas prácticas clínicas, conducta responsable de la investigación y trato humanitario a animales de laboratorio. Es un esfuerzo conjunto del Fred Hutchinson Cancer Research Center y la Universidad de Miami. Con la colaboración de expertos locales, gran parte del contenido se ha adaptado para América Latina, se ha traducido al español y portugués y se han establecido acuerdos de colaboración con instituciones especializadas en bioética en Chile, Brasil, Costa Rica y Perú. Los autores presentan una metodología accesible para la capacitación en ética de la investigación y una justificación de su uso y difusión en América Latina PMID:21687817

  2. Review of antiviral and immunomodulating properties of plants of the Peruvian rainforest with a particular emphasis on Una de Gato and Sangre de Grado.

    PubMed

    Williams, J E

    2001-12-01

    Viral diseases, including emerging and chronic viruses, are an increasing worldwide health concern. As a consequence, the discovery of new antiviral agents from plants has assumed more urgency than in the past. A number of native Amazonian medicines of plant origin are known to have antimicrobial and anti-inflammatory activity, although only a few have been studied for their antiviral properties and immunomodulating effects. Those most studied include: Sangre de Grado (drago) (Croton lechleri) in the Euphorbiaceae family and Una de Gato (Uncaria tomentosa) in the Rubiaceae family. This article reviews the chemical composition, pharmacological properties, state of current research, clinical use, and potential antiviral and immunomodulating activity of these and other plants from the Peruvian Amazon.

  3. Las propiedades de las estrellas extrañas en el marco de una nueva ecuación de estado para la materia extraña

    NASA Astrophysics Data System (ADS)

    Lugones, G.; Benvenuto, O. G.

    Se estudian las propiedades generales de las estrellas constituídas por materia extraña (ME) en el marco de una nueva ecuación de estado (EOS) en la que consideramos la masa de los quarks como dependiente del número medio de bariones por unidad de volumen. Se asume esta dependencia de forma que los quarks sean livianos (pesados) a densidades altas (bajas). En esta aproximación, la EOS de la ME es similar a la predicha por el modelo de la Bolsa del MIT, pero es significativamente mas dura a bajas densidades. Esta propiedad modifica las propiedades de las estrellas extrañas en forma notable. Encontramos que, con esta nueva EOS, los objetos pueden ser más masivos que en el caso de la EOS de la bolsa del MIT y que, además, pueden presentar mayores redshifts gravitatorios en hasta un 10%. En el caso de las oscilaciones radiales de estos objetos, calculamos la relación período vs. redshift gravitacional y encontramos una expresión analítica simple para el caso de las oscilaciones de objetos de baja masa. Encontramos que, aún con hipótesis muy diferentes en cuanto a la ecuación de estado de la materia extraña, las propiedades generales de estos objetos no se ve afectada en forma fundamental, y, por lo tanto, no deberían ser muy diferentes de las aquí expuestas.

  4. Síndrome del Outlet Torácico: ¿Una Patología Siempre Quirúrgica? Análisis de una Serie de 31 Cirugías Realizadas por Vía Supraclavicular Serie clínica

    PubMed Central

    Socolovsky, Mariano; Di Masi, Gilda; Binaghi, Daniela; Campero, Álvaro; Páez, Miguel Domínguez; Dubrovsky, Alberto

    2014-01-01

    Introducción: El síndrome de outlet torácico es una compresión del plexo braquial que suscita polémica. Se clasifica en Outlet Torácico Verdadero o neurogénico (OTV) y Outlet Torácico Disputado o no neurogénico (OTD). El primero presenta síntomas motores en la mano, mientras que el segundo sólo síntomas sensitivos en el miembro superior. El objetivo de este trabajo es analizar los resultados obtenidos en una serie de 31 cirugías. Métodos: Se analizaron las cirugías de nervios efectuadas entre 2003-2012, tomando los diagnósticos de outlet torácico cuyo período de seguimiento post-operatorio mínimo fuera de 6 meses. Se buscaron los siguientes datos: edad, sexo, presencia de síntomas sensitivos y/o motores, clasificación, resultado de los estudios neurofisiológicos y de imágenes, resultado de la cirugía, complicaciones post-operatorias y recidivas. Resultados: Se incluyeron 31 cirugías realizadas en 30 pacientes, 9 OTV (8 mujeres) de 24.3 años, y 21 con OTD (18 mujeres) de 37.4 años de edad en promedio. Un 90% presentaron alteraciones neurofisiológicas preoperatorias, y 66,6% imagenológicas. En el intraoperatorio, el 100% de los OTV presentó una alteración anatómica relacionada con la sintomatología, hecho observado sólo en el 36.7% de los OTD operados. El 87,5% de los OTV mejoraron sensitivamente, mientras que 77,7% mejoraron la atrofia. Por el contrario, 45.4% de los OTD mejoraron permanentemente, 36.3% no tuvieron cambios, 13.6% mejoraron transitoriamente y 4.5% (un caso) empeoró. Las complicaciones post-operatorias fueron más frecuentes aunque transitorias en el grupo de OTV (3 casos sobre 9 operados, 33.3%) que en los OTD (3 casos sobre 22, un 13.6%). Conclusión: El OTV suele mayormente mejorar luego de la cirugía, igual que el OTD aunque en una proporción mucho menor. Estos hallazgos coinciden con otros reportes recientes de esta patología. PMID:25165614

  5. La preparacion en ciencia de los candidatos a maestros del nivel elemental primario segun la reforma de la educacion cientifica en Puerto Rico: Una propuesta de secuencia curricular

    NASA Astrophysics Data System (ADS)

    Rodriguez Plaza, Evelyn

    El proposito de esta investigacion fue identificar los componentes de la preparacion en ciencia que deben recibir los estudiantes del Bachillerato en Artes en Educacion Elemental, Nivel Primario, de acuerdo a los documentos que dirigen la reforma de la educacion cientifica en Puerto Rico. Tambien, se identificaron los componentes de los cursos que forman parte de la preparacion en ciencia de estos estudiantes. Se compararon los componentes de la preparacion en ciencia y los componentes de los cursos para determinar congruencias y discrepancias. Con los datos recopilados se identificaron los componentes de los cursos de una secuencia curricular para la preparacion en ciencia de los candidatos a maestros del nivel elemental primario. La secuencia curricular que se propone en esta investigacion incluye cursos de contenido cientifico y de metodologia en la ensenanza de la ciencia disenados para satisfacer las necesidades de los candidatos. Se recomienda que en los procesos para el diseno, la implantacion y la evaluacion de estos cursos participen profesores de ciencia, profesores de educacion y maestros del nivel elemental primario. Todos los cursos de la secuencia curricular deben tener un enfoque constructivista. Las experiencias educativas que se incluyan en los cursos deben aspirar a desarrollar en los candidatos los atributos de la cultura cientifica y actitudes positivas hacia la ciencia y hacia la ensenanza de esta disciplina. El modelaje por parte de los profesores que ensenen los cursos de la secuencia curricular es fundamental en el desarrollo profesional de los candidatos. Se recomienda que en los cursos de contenido cientifico se estudien los conceptos y los conocimientos cientificos que forman parte del curriculo de Kindergarten a tercer grado de forma integrada y con una profundidad universitaria. Estos cursos deben tener un enfoque interdisciplinario e incluir el estudio de la naturaleza de la ciencia y un componente de laboratorio para desarrollar los

  6. CONTAMINACIÓN AMBIENTAL, VARIABILIDAD CLIMÁTICA Y CAMBIO CLIMÁTICO: UNA REVISIÓN DEL IMPACTO EN LA SALUD DE LA POBLACIÓN PERUANA

    PubMed Central

    Gonzales, Gustavo F.; Zevallos, Alisson; Gonzales-Castañeda, Cynthia; Nuñez, Denisse; Gastañaga, Carmen; Cabezas, César; Naeher, Luke; Levy, Karen; Steenland, Kyle

    2015-01-01

    RESUMEN El presente artículo es una revisión sobre la contaminación del agua, el aire y el efecto del cambio climático en la salud de la población peruana. Uno de los principales contaminantes del aire es el material particulado menor de 2,5 μ (PM 2,5), en la ciudad de Lima, anualmente 2300 muertes prematuras son atribuibles a este contaminante. Otro problema es la contaminación del aire domiciliario por el uso de cocinas con combustible de biomasa, donde la exposición excesiva a PM 2,5 dentro de las casas es responsable de aproximadamente 3000 muertes prematuras anuales entre adultos, con otro número desconocido de muertes entre niños debido a infecciones respiratorias. La contaminación del agua tiene como principales causas los desagües vertidos directamente a los ríos, minerales (arsénico) de varias fuentes, y fallas de las plantas de tratamiento. En el Perú, el cambio climático puede impactar en la frecuencia y severidad del fenómeno de El Niño oscilación del sur (ENSO) que se ha asociado con un incremento en los casos de enfermedades como cólera, malaria y dengue. El cambio climático incrementa la temperatura y puede extender las áreas afectadas por enfermedades transmitidas por vectores, además de tener efecto en la disponibilidad del agua y en la contaminación del aire. En conclusión, el Perú, pasa por una transición de factores de riesgo ambientales, donde coexisten riesgos tradicionales y modernos, y persisten los problemas infecciosos y crónicos, algunos de los cuales se asocian con problemas de contaminación de agua y de aire. PMID:25418656

  7. Cobertura de los sistemas de pensiones y factores asociados al acceso a una pensión de jubilación en México

    PubMed Central

    Murillo-López, Sandra; Venegas-Martínez, Francisco

    2016-01-01

    Resumen Objetivos: obtener estimaciones de indicadores de cobertura de las pensiones por jubilación o retiro para la población mexicana de 65 y más años, y evaluar el impacto que tienen los sistemas de pensiones en las transiciones al retiro de los adultos en edades medias y avanzadas en México. Para ello se utilizan datos microeconómicos provenientes de la Encuesta Nacional de Salud y Envejecimiento. Mediante análisis econométrico se identifican los factores sociodemográficos, económicos, laborales e institucionales que están asociados al acceso a una pensión de jubilación, o bien, a la dependencia de otras fuentes de ingresos. Se encontró que, en México, las transiciones al retiro del mercado de trabajo en las etapas avanzadas del ciclo de vida son limitadas debido a las características eminentemente contributivas de los esquemas de pensiones, los cuales favorecen a la población con trayectorias laborales formales y más estables asociadas a: características de género, oportunidades educativas y posibilidades de inserción en el mercado laboral. PMID:27524936

  8. TEMAS PARA UNA BIOETICA LATINOAMERICANA

    PubMed Central

    Yunta, Eduardo Rodriguez

    2009-01-01

    El presente trabajo reflexiona sobre el fundamento filosófico de la bioética como disciplina, método y movimiento desde su contexto histórico y en relación con el contexto social y cultural de la vivencia latinoamericana. PMID:20209030

  9. A'Una ("Let's Go!")

    ERIC Educational Resources Information Center

    Brescia, Bill

    The guide, intended to aid students (grades four and above) in making their bodies a good home for their spirit, provides a variety of athletic activities and traditional Indian recipes for use in the classroom or in cultural programs. Apart from running (the major American Indian means of maintaining physical fitness), instructions are given for…

  10. A screen of chemical modifications identifies position-specific modification by UNA to most potently reduce siRNA off-target effects

    PubMed Central

    Bramsen, Jesper B.; Pakula, Malgorzata M.; Hansen, Thomas B.; Bus, Claus; Langkjær, Niels; Odadzic, Dalibor; Smicius, Romualdas; Wengel, Suzy L.; Chattopadhyaya, Jyoti; Engels, Joachim W.; Herdewijn, Piet; Wengel, Jesper; Kjems, Jørgen

    2010-01-01

    Small interfering RNAs (siRNAs) are now established as the preferred tool to inhibit gene function in mammalian cells yet trigger unintended gene silencing due to their inherent miRNA-like behavior. Such off-target effects are primarily mediated by the sequence-specific interaction between the siRNA seed regions (position 2–8 of either siRNA strand counting from the 5′-end) and complementary sequences in the 3′UTR of (off-) targets. It was previously shown that chemical modification of siRNAs can reduce off-targeting but only very few modifications have been tested leaving more to be identified. Here we developed a luciferase reporter-based assay suitable to monitor siRNA off-targeting in a high throughput manner using stable cell lines. We investigated the impact of chemically modifying single nucleotide positions within the siRNA seed on siRNA function and off-targeting using 10 different types of chemical modifications, three different target sequences and three siRNA concentrations. We found several differently modified siRNAs to exercise reduced off-targeting yet incorporation of the strongly destabilizing unlocked nucleic acid (UNA) modification into position 7 of the siRNA most potently reduced off-targeting for all tested sequences. Notably, such position-specific destabilization of siRNA–target interactions did not significantly reduce siRNA potency and is therefore well suited for future siRNA designs especially for applications in vivo where siRNA concentrations, expectedly, will be low. PMID:20453030

  11. Training as a Tool for Community Development: 25 Years of Experience in Sparsely Populated Rural Areas in Cuenca, Spain

    ERIC Educational Resources Information Center

    Diaz-Puente, Jose M.; Moreno, Francisco Jose Gallego; Zamorano, Ramon

    2012-01-01

    Training is a key tool for community development processes in rural areas. This training is made difficult by the characteristics of the rural areas and their population. Furthermore, the methods used by traditional training bodies are not adapted to the peculiarities of these areas. This article analyses the training methodology used by the…

  12. Chronic institutional failure and enhanced vulnerability to flash-floods in the Cuenca Altadel Río Lerma, Mexico.

    PubMed

    Güiza, Frida; Simmons, Peter; Burgess, Jacquie; McCall, Michael K

    2016-01-01

    The dominant paradigm in disaster risk reduction (DRR) policies has been seriously contested because of its reliance on interventions based on technocratic expertise. In the Mexican context, the influence of informal practices such as clientelism and cartelisation of the political system produces environmental degradation and vulnerability to disasters within the communities in the study site. This paper contributes to understanding of failed institutional processes and parallel practices that intensify vulnerability to disasters by contrasting the discourses of agents within a peri-urban community in central Mexico. Employing the Situational Analysis Approach as a methodological framework, the study identifies divergent views and practices within the community, leading to different responses to disasters and to different perceptions regarding institutional performance. In addition, it finds that institutional decision-making, based only on scientific and technical expertise, has resulted in unintended consequences that influence ongoing vulnerability to floods in the site under review.

  13. Chronic institutional failure and enhanced vulnerability to flash-floods in the Cuenca Altadel Río Lerma, Mexico.

    PubMed

    Güiza, Frida; Simmons, Peter; Burgess, Jacquie; McCall, Michael K

    2016-01-01

    The dominant paradigm in disaster risk reduction (DRR) policies has been seriously contested because of its reliance on interventions based on technocratic expertise. In the Mexican context, the influence of informal practices such as clientelism and cartelisation of the political system produces environmental degradation and vulnerability to disasters within the communities in the study site. This paper contributes to understanding of failed institutional processes and parallel practices that intensify vulnerability to disasters by contrasting the discourses of agents within a peri-urban community in central Mexico. Employing the Situational Analysis Approach as a methodological framework, the study identifies divergent views and practices within the community, leading to different responses to disasters and to different perceptions regarding institutional performance. In addition, it finds that institutional decision-making, based only on scientific and technical expertise, has resulted in unintended consequences that influence ongoing vulnerability to floods in the site under review. PMID:26271745

  14. Active Commuting to School, Weight Status, and Cardiometabolic Risk in Children from Rural Areas: The Cuenca Study

    ERIC Educational Resources Information Center

    Gutiérrez-Zornoza, Myriam; Sánchez-López, Mairena; García-Hermoso, Antonio; González-García, Alberto; Chillón, Palma; Martínez-Vizcaíno, Vicente

    2015-01-01

    Purpose: The aim of this study was to examine (a) whether distance from home to school is a determinant of active commuting to school (ACS), (b) the relationship between distance from home to heavily used facilities (school, green spaces, and sports facilities) and the weight status and cardiometabolic risk categories, and (c) whether ACS has a…

  15. Learning Astronomy by Playing in a Park. (Spanish Title: Aprender AstronoMía Jugando en Una Plaza.) Aprender Astronomia Brincando em Uma Praça

    NASA Astrophysics Data System (ADS)

    Camino, Néstor

    2012-12-01

    Some public-square games are presented in this paper, considered as didactic modules to help children imagine astronomical processes, based on the concept that learning in Astronomy should be developed to strengthen the relationship of our body with three-dimensional space and time, much in the same way we experience when observing the actual sky, holding a permanent "dialogue" between the actual world and what is to be learned. The games presented (merry-go-rounds and slides) were designed to work on the astronomical concepts related to the translation of the Earth around the Sun, the phases of the Moon and gravity, and on what is perceived by an observer about those phenomena. The description of each game, their physical and astronomical foundations, and a critical comment about their didactical importance are the key parts of the paper. Finally, a recommendation is given about the role teachers should play to be essential partners in the process of learning Astronomy by means of the interaction with these games. Se presentan en este trabajo algunos juegos de plaza, considerados como módulos didácticos para imaginar procesos astronómicos, a partir de la concepción de que el aprendizaje en Astronomía debe desarrollarse fortaleciendo la relación del propio cuerpo con el espacio tridimensional y con el tiempo, tal como se vive al observar el cielo, construyendo un "diálogo" entre el mundo real y los aprendizajes a construir. Los juegos presentados (calesitas y toboganes) fueron diseñados para trabajar sobre la traslación de la Tierra en torno al Sol, las fases de la Luna y la gravedad, y sobre lo que un observador percibe de los mismos. Se da la descripción de cada juego, se discuten sus fundamentos físicos y astronómicos, y se desarrolla una crítica didáctica de los mismos. Finalmente, se comenta el rol que deberían tener los docentes en el acompañamiento a los aprendices en el proceso de interacción con los juegos presentados. Apresentam-se neste

  16. Revision curricular a partir de un analisis comparativo de las discrepancias en los curriculos de una escuela de optometria en Puerto Rico con las competencias requeridas para las agencias de revalida y acreditacion 2004

    NASA Astrophysics Data System (ADS)

    Rivera Pacheco, Andres

    El proposito de esta investigacion, un estudio cualitativo de caso, fue comparar y contrastar el curriculo vigente de la Escuela de Optometria de la UIAPR con las competencias y estandares requeridos por las agencias de acreditacion y de revalida. Con este proposito, decidimos realizar una revision y un analisis de documentos: el prontuario de cada uno de los cursos de los curriculos implantados en el 1993 y en el 2001; las competencias y estandares establecidos por las agencias de revalida y de acreditacion; y las estadisticas en las que se analiza el porcentaje de estudiantes que aprueban cada una de las partes de los examenes de revalida entre el 1998 al 2003. Se realizaron entrevistas dirigidas para dar apoyo y complementar la revision y el analisis de estos documentos. Los participantes de las entrevistas fueron tres estudiantes de la clase de optometria del 2004 (ultima clase del curriculo del 1993); tres estudiantes de la clase de optometria del 2005 (primera clase graduanda del curriculo vigente) y tres profesores y/o directores de los Departamentos de Ciencias Basicas, Ciencias Clinicas y Cuidado al Paciente. Esta investigacion se enmarco en el modelo de evaluacion curricular de discrepancia de Malcolm Provus y en el modelo de desarrollo basado en competencias. Uno de los hallazgos mas importantes del estudio es que los cambios que se implantaron al curriculo del 2001 no han logrado que los estudiantes mejoren su ejecucion en los examenes de revalida. Por otro lado, se encontro que el curriculo vigente atiende completamente los estandares de la practica de Optometria, pero no las competencias. Esta informacion fue validada mediante el uso de una tabla de cotejo para el analisis de los cursos y de la informacion obtenida de las entrevistas. El estudio determina y concluye que existen discrepancias entre los prontuarios de los cursos del curriculo y las competencias requeridas por la agencia de revalida. Segundo, que el Departamento de Ciencias Basicas es el

  17. Adapting a Common Photographic Camera to Take Pictures of the Sky. (Spanish Title: Adaptando Una Camara Fotografica Comun Para Obtener Fotografias del Cielo.) Adaptando Uma Câmera Fotográfica Manual Simples Para Fotografar o Céu

    NASA Astrophysics Data System (ADS)

    Danhoni Neves, Marcos Cesar; Pereira, Ricardo Francisco

    2007-12-01

    In this paper will be introduced a method of astrophotography using a non-reflex photographic camera (a low-cost method). It will be revised some photographic processes commonly used nowadays for comparison with the aims of this paper. En este trabajo será introducido un método de astrofotografia que utiliza una cámara fotográfica non-reflex (un método de bajo costo). Serán revisados algunos procesos fotográficos comúnmente utilizados actualmente para comparación con los objetivos de este trabajo. O presente artigo procura introduzir um método de astrofotografia utilizando uma câmera fotográfica não reflex, de baixo custo. É feita uma revisão do processo fotográfico comumente empregado para fins de comparação com os objetivos pretendidos no presente trabalho.

  18. Inverse modeling of groundwater flow in the semiarid evaporitic closed basin of Los Monegros, Spain

    NASA Astrophysics Data System (ADS)

    Samper-Calvete, F. J.; García-Vera, M. A.

    ha a été programmée, en partie dans un bassin évaporitique fermé où existent des lacs de playa. Le projet a fait émergé des préoccupations environnementales. L'évaluation des impacts hydrologiques de l'irrigation implique de quantifier correctement l'hydrogéologie de cette région. A partir des informations disponibles, un modèle hydrogéologique conceptuel a étéétabli il identifie deux aquifères principaux interconnectés par drainance au travers d'un imperméable. Un modèle numérique, établi sur la base de ce modèle conceptuel, a été calibré en conditions de régime permanent, en utilisant la méthode d'estimation automatique du maximum de vraisemblance des paramètres (Carrera and Neuman, 1986a). Le modèle calibré reproduit correctement la piézométrie mesurée et est en accord avec les informations concernant l'écoulement des nappes. La résolution du problème inverse a fourni des estimations acceptables des paramètres. On en a conclu que l'anisotropie joue un rôle essentiel dans certaines parties de l'aquifère inférieur. La moyenne géométrique de la conductivité hydraulique est d'environ deux ordres de grandeur plus élevée que la conductivité hydraulique moyenne obtenue par des essais de terrain à l'échelle locale. Cet effet d'échelle sur la conductivité hydraulique est conforme aux résultats obtenus par Neuman (1994) et Sánchez-Vila et al. (1996). Resumen La hidrogeología de zonas endorreicas en zonas evaporíticas ha recibido muy poca atención en el pasado debido fundamentalmente a que en estas zonas las aguas subterráneas tienen una elevada salinidad debido a la alta solubilidad de sus materiales. El interés por la hidrogeología de la zona de Los Monegros en el noreste de España surgió a raiz de la aprobación en 1986 del proyecto de Los Monegros II en la zona central del valle del Ebro que contempla la puesta en regadío de 60,000 ha, algunas de las cuales se encuentran situadas en la zona endorreica de Los

  19. The Moon Phases in a Paper Box. (Spanish Title: Las Fases de la Luna en Una Caja de Cartón.) As Fases da Lua Numa Caixa de Papelão

    NASA Astrophysics Data System (ADS)

    de Fátima O. Saraiva, Maria; Amador, Cláudio B.; Kemper, Érico; Goulart, Paulo; Muller, Angela

    2007-12-01

    We present a very simple concrete model to demonstrate the concept of phases of an illuminated body. The main objective of our model is to help the understanding of the Moon phases as viewed from the perspective of an observer on Earth. The material allows the visualization of two important effects: (1st) even though all the time half Moon is illuminated by the Sun, we see different fractions of the illuminated Moon surface, depending on our angle of sight; (2nd) the orientation of the convex part of the Moon in the crescent and waning phases on the sky also depends on our perspective from Earth. The use of a closed box allows one to see the contrast among the different phases with no need of a dark room. We also present a text on the Moon phases, emphasizing the dependence of the aspect of the bright part on the angle of sight. En este trabajo proponemos la construcción de material didáctico de bajo costo para demostración del concepto de fases de un cuerpo iluminado. El principal objetivo de nuestro material es facilitar la comprensión de las fases de la Luna desde la perspectiva de un observador en la Tierra. El material ayuda la visualización de dos efectos importantes: (1º) a pesar de tener siempre la mitad de la Luna (representada por una bolita de espuma plástica o de ping-pong), iluminada por el Sol ( representado por una fuente de luz natural o artificial), vemos diferentes fracciones de su superficie iluminada, dependiendo del ángulo por el cual la vemos; (2º) la orientación del borde convexo de la Luna en las fases Creciente y Menguante también depende de la perspectiva por la cual la miramos desde la Tierra. El uso de una caja cerrada permite observar el contraste entre las diferentes fases sin necesidad de estar en un recinto oscuro. Presentamos también un texto explicativo sobre las fases de la Luna, enfatizando la dependencia de la apariencia de la parte iluminada con el ángulo de visión. Neste trabalho propomos a construção de

  20. Autoreporte de exposición a publicidad y promoción de tabaco en una cohorte de fumadores mexicanos: Antes y durante la publicación de la Ley General para el Control del tabaco en 2008

    PubMed Central

    Hernández, Rosaura Pérez; Thrasher, James F.; Bolaños, Rosibel Rodríguez; Gutiérrez, Inti Barrientos; Hernández, Norma A Ibañez

    2015-01-01

    Resumen Objetivo Determinar en población fumadora el nivel de exposición a la mercadotecnia por parte de la Industria Tabacalera (IT), a través de diferentes métodos de promocionar sus productos de tabaco, antes y durante la publicación de la Ley General para el Control del Tabaco (LGCT) en 2008. Material y métodos Estudio de cohorte en fumadores adultos (n=941 pre-LGCT y n=1051 post-LGCT) de cuatro ciudades mexicanas. Se realizaron análisis multivariados mediante modelos de ecuaciones de estimación generalizada (GEE). Resultados Se incremento el autoreporte de recepción de muestras gratis de cigarros (3.7% a 8.1%), ropa o artículos con marcas o logos (3.6% a 6.4%), haber visto información sobre eventos especiales (1.9% a 4.7%), y bares, antros y discos para mayores de edad (21.4% a 28%). Se observaron decrementos de publicidad en exteriores (54.7% a 47.2%). Conclusión Es necesaria una política integral con prohibiciones totales de la publicidad y promoción de los productos de tabaco que integre mayor vigilancia y sanciones para lograr la disminución y prevención del consumo de tabaco. PMID:22689158

  1. Basic Concepts of Astronomy: a Methodological Proposal. (Spanish Title: Conceptos Básicos de Astronomía: Una Propuesta Metodológica.) Conceitos Básicos de Astronomia: Uma Proposta Metodológica

    NASA Astrophysics Data System (ADS)

    Darroz, Luiz Marcelo; Heineck, Renato; Samudio Pérez, Carlos Ariel

    2011-12-01

    In this report, the development of a methodological proposal which approaches basic concepts of astronomy-grounded pedagogically on Meaningful Learning is described. The proposal, which consists of four meetings, was developed by teachers and academics of the course of Professor in Physics of the University of Passo Fundo (UPF), through an extension course to a group of highschool students of a public school of the town of Passo Fundo, RS. The work was focused into basic concepts of astronomy. The signs of Meaningful Learning have been obtained by means of research and evaluation tools that were applied at the end of each meeting. The evaluation of the proposal has been conducted by means of a final questionnaire which was answered by the participants at the end ofthe development of activities. By means of the results obtained from the different instruments, and the comments made by the participants during the activities and by means of the high rates of approval obtained in the final questionnaire, we think that the proposal reached the established goals and it may be repeated with the certainty of success. En este relato se describe una propuesta de desarrollo metodológico que aborda conceptos básicos de astronomía fundamentada pedagógicamente en el Aprendizaje Significativo. La propuesta que comprende cuatro encuentros, fue desarrollada por profesores y académicos del curso de Licenciatura en Física de la Universidad de Passo Fundo (UPF), a través de un curso de extensión para un grupo de Liceo del 6º año de una Escuela Pública de la ciudad de Passo Fundo/RS. El trabajo tuvo como eje principal los "conceptos básicos de astronomía". Los indicios de Aprendizaje Significativo fueron obtenidos por instrumentos de pesquisa y evaluación, siempre aplicados después de cada encuentro. La evaluación de la propuesta fue hecha a través de un cuestionario final y contestado por los participantes al finalizar el desarrollo de actividades. Por los resultados

  2. Ciencia, Sociedad, Soluciones: Una Introduccion al USGS

    USGS Publications Warehouse

    ,

    2001-01-01

    El USGS sirve a la nacion de los Estados Unidos proveyendo informacion fidedigna para ? Describir y comprender la Tierra; ? Minimizar la perdida de vidas y propiedades por desastres naturales; ? Manejar los recursos hidrologicos, biologicos, energeticos y minerales; y ? Mejorar y proteger nuestra calidad de vida.

  3. Suva Una? (What Is It Doing?)

    ERIC Educational Resources Information Center

    MacLean, Edna A.

    This primary level reader is part of a series of materials developed for beginning reading instruction in Barrow Inupiaq. Each page consists of a drawing and brief text. It is a revision of an earlier version of the same title. (AMH)

  4. Estudio epidemiológico de sucesos traumáticos, trastorno de estrés post-traumático y otros trastornos psiquiátricos en una muestra representativa de Chile

    PubMed Central

    Pérez Benítez, Carlos I.; Vicente, Benjamin; Zlotnick, Caron; Kohn, Robert; Johnson, Jennifer; Valdivia, Sandra; Rioseco, Pedro

    2010-01-01

    RESUMEN Durante la década de 1990 en los Estados Unidos (EU), el conocimiento sobre el trastorno de estrés post-traumático (TEPT) evolucionó de estudios específicos en un principio, sobre veteranos de guerra y sobre víctimas de desastres, a estudios epidemiológicos más tarde, sin embargo, la epidemiología del TEPT en países en desarrollo ha sido un área poco estudiada hasta ahora. Los expertos en el área de trauma han propuesto que los sucesos traumáticos que ocurren en la niñez son más perjudiciales para la salud mental que aquellos que ocurren más tarde en la vida. Este trabajo revisa los resultados de un estudio epidemiológico llevado a cabo en Chile. Específicamente, se revisan los resultados sobre las tasas de prevalencia del TEPT, traumas asociados más frecuentemente con él, así como la comorbilidad de este trastorno con otros trastornos psiquiátricos a lo largo de la vida. Igualmente se analizaron las diferencias del TEPT en cada sexo, así como la exposición a traumas en una muestra representativa de chilenos. Además se comparó la prevalencia de trastornos psiquiátricos en personas que sufrieron su primer trauma durante la niñez, durante la edad adulta, o que no reportaron traumas durante su vida. En estos estudios epidemiológicos se usaron módulos del TEPT y trastorno de personalidad antisocial (TPA) de la entrevista diagnóstica siguiendo los criterios del DSM-III-R (DIS–III-R). Para evaluar el resto de los trastornos psiquiátricos se usó la Entrevista Diagnóstica Internacional Compuesta (CIDI). Estos instrumentos fueron administrados en tres ciudades chilenas a 2390 personas mayores de 15 años. Para estimar los errores estándares (EE) debido al diseño de la muestra y a la necesidad de ajuste se usó el método Taylor de linearización seriada. También se usó un análisis de regresión logística para examinar la relación entre el TEPT, los factores demográficos de riesgo y el tipo de trauma. Además se utilizó la

  5. A Proposed Activity for a Meaningful Learning about the Moon Phases. (Breton Title: Uma Proposta de Atividade Para a Aprendizagem Significativa sobre as Fases da Lua.) Una Actividad Propuesta Para EL Aprendizaje Significativo Acerca de Las Fases de la Luna

    NASA Astrophysics Data System (ADS)

    Martins, Bruno Andrade; Langhi, Rodolfo

    2012-12-01

    ínua avaliação durante o processo, culmina com a elaboração de uma história em quadrinhos envolvendo as fases da Lua. Portanto, o objetivo deste trabalho é apresentar uma proposta de atividade didática diferenciada sustentada pelos princípios teóricos da aprendizagem significativa aplicada ao ensino das fases da Lua durante as aulas de Física no ensino médio. En este trabajo se presenta uno de los contenidos de la Astronomía y el evidente fracaso en la enseñanza del tema en la escuela secundaria, a pesar del hecho que los documentos oficiales apuntan para la necesidad de trabajar contenidos de Astronomía en este nivel. Entre los conceptos alternativos en Astronomía que los alumnos secundarios llevan consigo, aún después de terminados los estudios, destacamos aquí el fenómeno de las fases de la Luna. El desarrollo de diferentes estrategias en relación con los métodos tradicionales, dirigidas al proceso de enseñanza-aprendizaje en este tema fue considerado en este trabajo como uno de los resultados obtenidos a la luz de los referenciales del aprendizaje significativo, tal como fueron fundamentados por Ausubel. Según la propuesta que aquí se presenta, la participación activa de los estudiantes en la ejecución de una actividad experimental y otras actividades educativas destinadas a la evaluación continua durante el proceso culminó en la elaboración de una historieta respecto de las fases de la Luna. Por lo tanto, el objetivo de este trabajo es presentar una propuesta de actividad de enseñanza diferenciada con el apoyo de los principios teóricos del aprendizaje significativo aplicado a la enseñanza de las fases de la luna durante las clases de física del ciclo secundario.

  6. Estudio epidemiológico de sucesos traumáticos, trastorno de estrés post-traumático y otros trastornos psiquiátricos en una muestra representativa de Chile

    PubMed Central

    Pérez Benítez, Carlos I.; Vicente, Benjamin; Zlotnick, Caron; Kohn, Robert; Johnson, Jennifer; Valdivia, Sandra; Rioseco, Pedro

    2010-01-01

    RESUMEN Durante la década de 1990 en los Estados Unidos (EU), el conocimiento sobre el trastorno de estrés post-traumático (TEPT) evolucionó de estudios específicos en un principio, sobre veteranos de guerra y sobre víctimas de desastres, a estudios epidemiológicos más tarde, sin embargo, la epidemiología del TEPT en países en desarrollo ha sido un área poco estudiada hasta ahora. Los expertos en el área de trauma han propuesto que los sucesos traumáticos que ocurren en la niñez son más perjudiciales para la salud mental que aquellos que ocurren más tarde en la vida. Este trabajo revisa los resultados de un estudio epidemiológico llevado a cabo en Chile. Específicamente, se revisan los resultados sobre las tasas de prevalencia del TEPT, traumas asociados más frecuentemente con él, así como la comorbilidad de este trastorno con otros trastornos psiquiátricos a lo largo de la vida. Igualmente se analizaron las diferencias del TEPT en cada sexo, así como la exposición a traumas en una muestra representativa de chilenos. Además se comparó la prevalencia de trastornos psiquiátricos en personas que sufrieron su primer trauma durante la niñez, durante la edad adulta, o que no reportaron traumas durante su vida. En estos estudios epidemiológicos se usaron módulos del TEPT y trastorno de personalidad antisocial (TPA) de la entrevista diagnóstica siguiendo los criterios del DSM-III-R (DIS–III-R). Para evaluar el resto de los trastornos psiquiátricos se usó la Entrevista Diagnóstica Internacional Compuesta (CIDI). Estos instrumentos fueron administrados en tres ciudades chilenas a 2390 personas mayores de 15 años. Para estimar los errores estándares (EE) debido al diseño de la muestra y a la necesidad de ajuste se usó el método Taylor de linearización seriada. También se usó un análisis de regresión logística para examinar la relación entre el TEPT, los factores demográficos de riesgo y el tipo de trauma. Además se utilizó la

  7. Inverse modeling of groundwater flow in the semiarid evaporitic closed basin of Los Monegros, Spain

    NASA Astrophysics Data System (ADS)

    Samper-Calvete, F. J.; García-Vera, M. A.

    ha a été programmée, en partie dans un bassin évaporitique fermé où existent des lacs de playa. Le projet a fait émergé des préoccupations environnementales. L'évaluation des impacts hydrologiques de l'irrigation implique de quantifier correctement l'hydrogéologie de cette région. A partir des informations disponibles, un modèle hydrogéologique conceptuel a étéétabli il identifie deux aquifères principaux interconnectés par drainance au travers d'un imperméable. Un modèle numérique, établi sur la base de ce modèle conceptuel, a été calibré en conditions de régime permanent, en utilisant la méthode d'estimation automatique du maximum de vraisemblance des paramètres (Carrera and Neuman, 1986a). Le modèle calibré reproduit correctement la piézométrie mesurée et est en accord avec les informations concernant l'écoulement des nappes. La résolution du problème inverse a fourni des estimations acceptables des paramètres. On en a conclu que l'anisotropie joue un rôle essentiel dans certaines parties de l'aquifère inférieur. La moyenne géométrique de la conductivité hydraulique est d'environ deux ordres de grandeur plus élevée que la conductivité hydraulique moyenne obtenue par des essais de terrain à l'échelle locale. Cet effet d'échelle sur la conductivité hydraulique est conforme aux résultats obtenus par Neuman (1994) et Sánchez-Vila et al. (1996). Resumen La hidrogeología de zonas endorreicas en zonas evaporíticas ha recibido muy poca atención en el pasado debido fundamentalmente a que en estas zonas las aguas subterráneas tienen una elevada salinidad debido a la alta solubilidad de sus materiales. El interés por la hidrogeología de la zona de Los Monegros en el noreste de España surgió a raiz de la aprobación en 1986 del proyecto de Los Monegros II en la zona central del valle del Ebro que contempla la puesta en regadío de 60,000 ha, algunas de las cuales se encuentran situadas en la zona endorreica de Los

  8. La Ciencia de los Antiguos Mexicanos: Una Bibliografia Selecta

    ERIC Educational Resources Information Center

    Ortiz-Franco, Luis; Magana, Maria

    1973-01-01

    Fifty-five citations pertaining to the scientific and mathematic development of ancient Mexicans, particularly the Mayas, are given in this select bibliography. The introduction and descriptions of resource libraries in 8 States are in Spanish. (NQ)

  9. Esercitazioni Matematiche: Una Rivista Ad uso Degli Studenti Universitari.

    ERIC Educational Resources Information Center

    Micale, Biagio

    1992-01-01

    The history of the journal "Esercitazioni Matematiche" (1921-43) edited by the "Circolo Matematico di Catania" for university students is described. A selection of proposed problems with some of their solutions is reported. (Author)

  10. Recuerdos de una revolucion cultural (Memories of a Cultural Revolution)

    ERIC Educational Resources Information Center

    Carvalho-Neto, Paulo de

    1973-01-01

    Describes elements of the modernism movement in Brazil; paper read at a symposium commemorating the fiftieth anniversay of the Week of Modern Art of Sao Paulo'' held February 11-12, 1972, at the University of California, Los Angeles, California. (DS)

  11. Una mirada hacia el pasado -- El Telescopio Espacial James Webb

    NASA Video Gallery

    La NASA planea usar el nuevo Telescopio Espacial James Webb para mirar el pasado. Al observar la luz de las estrellas que se formaron al principio del universo, la NASA está a punto de arrojar nuev...

  12. Etimologia in una lingua pianificata (Etymology in a Planned Language).

    ERIC Educational Resources Information Center

    Minnaja, Carlo

    2002-01-01

    Discusses the fifth volume of the "Etimologia Vortaro de Esperanto" (Etymological Dictionary of Esperanto). The dictionary provides not only the etynom of each Esperanto term, but also the etymology of the ethnic language words from which the editor derived the terms in question. (Author/VWL)

  13. Una Perspectiva de Mexico: Its People, Places and History.

    ERIC Educational Resources Information Center

    Bianchi, Gary; Bianchi, Maria Eugenia Matute

    Evolving from a general commitment to the goals of cultural pluralism and bicultural education, this portfolio of 24 full color and halftone photographs aims to reinforce those curricular objectives which emphasize a respect for the value and individuality of different cultures and groups, affirm the right of an individual to maintain a bicultural…

  14. The Understanding of Astronomy Concepts by Students from Basic Education of a Public School. (Spanish Title: El Entendimiento de Conceptos de Aastronmía Por Los Alumnos de Educación Básica en Una Escuela Pública.) O Entendimento de Conceitos de Astronomia Por Alunos da Educação Básica: O Caso de Uma Escola Pública Brasileira

    NASA Astrophysics Data System (ADS)

    Iria Machado, Daniel; dos Santos, Carlos

    2011-07-01

    We present the results obtained in a research on the comprehension of basic astronomical concepts, in which 561 students from fifth grade middle school to third grade high school of a public school of the city of Foz do Iguaçu (Brazil) took part. A test with 20 multiple-choice questions was applied to indentify the most common conceptions expressed by the students. This test was elaborated based on the literature about misconceptions and covered the following topics: the day-night cycle; the time zones; the seasons of the year; the phases of the Moon; the movement of the Moon; the apparent movement of the Sun in the celestial sphere; the eclipses; the dimensions and distances in the Universe; the brightness of the stars and its observation from Earth. Though a small progress was verified in the proportion of scientifically acceptable answers when comparing the eighth grade of middle school to the fifth, and the third grade of high school to the first, there was an overall predominance of alternative conceptions regarding most of the explored subjects, which persisted up to the last year of secondary school. The comparison to data found in this research made in other socio-cultural contexts revealed, in many aspects, similar notions and difficulties revealed by the students. Se presentan los resultados de una investigación sobre la comprensión de conceptos astronómicos básicos, en la cual participaron 561 estudiantes que cursaban entre el quinto grado de la enseñanza primaria y el tercer año de la enseñanza secundaria de una escuela pública de la ciudad de Foz do Iguaçu (Brasil). Se utilizó un test de 20 preguntas de opción múltiple para identificar las concepciones más comunes expresadas por los estudiantes. Este instrumento de recolección de datos se desarrolló en base a la literatura sobre las concepciones alternativas y trató los siguientes temas: el ciclo día-noche, los husos horarios, las estaciones del año, las fases de la Luna, el

  15. The Understanding of Astronomy Concepts by Students from Basic Education of a Public School. (Spanish Title: El Entendimiento de Conceptos de Aastronmía Por Los Alumnos de Educación Básica en Una Escuela Pública.) O Entendimento de Conceitos de Astronomia Por Alunos da Educação Básica: O Caso de Uma Escola Pública Brasileira

    NASA Astrophysics Data System (ADS)

    Iria Machado, Daniel; dos Santos, Carlos

    2011-07-01

    We present the results obtained in a research on the comprehension of basic astronomical concepts, in which 561 students from fifth grade middle school to third grade high school of a public school of the city of Foz do Iguaçu (Brazil) took part. A test with 20 multiple-choice questions was applied to indentify the most common conceptions expressed by the students. This test was elaborated based on the literature about misconceptions and covered the following topics: the day-night cycle; the time zones; the seasons of the year; the phases of the Moon; the movement of the Moon; the apparent movement of the Sun in the celestial sphere; the eclipses; the dimensions and distances in the Universe; the brightness of the stars and its observation from Earth. Though a small progress was verified in the proportion of scientifically acceptable answers when comparing the eighth grade of middle school to the fifth, and the third grade of high school to the first, there was an overall predominance of alternative conceptions regarding most of the explored subjects, which persisted up to the last year of secondary school. The comparison to data found in this research made in other socio-cultural contexts revealed, in many aspects, similar notions and difficulties revealed by the students. Se presentan los resultados de una investigación sobre la comprensión de conceptos astronómicos básicos, en la cual participaron 561 estudiantes que cursaban entre el quinto grado de la enseñanza primaria y el tercer año de la enseñanza secundaria de una escuela pública de la ciudad de Foz do Iguaçu (Brasil). Se utilizó un test de 20 preguntas de opción múltiple para identificar las concepciones más comunes expresadas por los estudiantes. Este instrumento de recolección de datos se desarrolló en base a la literatura sobre las concepciones alternativas y trató los siguientes temas: el ciclo día-noche, los husos horarios, las estaciones del año, las fases de la Luna, el

  16. The Universe in a Box: Introduction to the Study of Astronomy in the Initial Formation of Physics Teachers. (Spanish Title: El Universo Representado en Una Caja: Introducción al Estudio de la Astronomía en la Formación Inicial de Profesores de Física.) O Universo Representado em Uma Caixa: Introdução ao Estudo da Astronomia NA Formação Inicial de Professores de Física

    NASA Astrophysics Data System (ADS)

    Longhini, Marcos Daniel

    2009-07-01

    This is a report of an activity of introduction to the study of Astronomy developed with a group of future Physics teachers at a Brazilian public university. Such activity had the goal of giving privileged emphasis to notions of spatiality, alternative conceptions of the participants and the process of interaction among peers, and consisted of the representation, in a three dimensional space, of the models of the universe that the participants had. The results, which were categorized as miscellaneous, geocentric, heliocentric and acentric models of the universe, were qualitatively analyzed. Analyses of the activity in the perspective of the participants are indicated and additional considerations are made regarding its use as a resource for teaching Astronomy and for teacher training. Este es el informe de una actividad para presentar un estudio introductorio de la Astronomía, desarrollado con una clase de futuros profesores de física en una universidad pública brasileña. Esta actividad tuvo como objetivo centrar las nociones de espacialidad, las concepciones alternativas de los participantes y el proceso de interacción entre pares, y consistió en la representación en un espacio tridimensional, de los modelos del universo que los participantes habían. Los resultados, que se clasificaron en universo miscelania, geocéntrico, heliocéntrico y acentrico, se analizaron cualitativamente. Son identificadas análisis de la actividad por los participantes, e hizo observaciones sobre su uso como recurso para la enseñanza de la astronomía y la formación de docentes. Trata-se do relato de uma atividade de introdução ao estudo da Astronomia, desenvolvida com uma turma de futuros professores de Física, em uma universidade pública brasileira. Tal atividade teve como meta privilegiar noções de espacialidade, as concepções alternativas dos participantes e o processo de interação entre pares e constou da representação, em um espaço tridimensional, dos

  17. A Diagnostic Assessment for the Teaching of Astronomy. (Spanish Title: Una Evaluación Diagnóstica Para la Enseñanza de la Astronomia.) Uma Avaliação Diagnóstica Para o Ensino da Astronomia

    NASA Astrophysics Data System (ADS)

    Pacifico Ribeiro de Assis Silveira, Felipa; Soares Gomes de Sousa, Célia Maria; Moreira, Antonio

    2011-07-01

    This article aims to present the results of a diagnostic evaluation, used as a tool for collecting data on prior knowledge of scientific concepts needed to understand the topic "Earth and Universe", from a group comprised of 47 students of 6th grade. The educational method of diagnosing the student's prior knowledge before teaching them is founded on the Meaningful Learning theory, proposed by David Ausubel. The diagnostic evaluation consisted of 25 questions; the answers were analyzed and categorized, making possible their interpretation, which allows us to understand the meanings assigned by the student to these concepts. It follows from the diagnostic evaluation, that the majority of students surveyed had difficulties in exposing scientific concepts on the topic "Earth and Universe" when starting the 6th grade. However, we identified relevant ideas and representations that contributed to the re-signification of scientific concepts proposed for the teaching of the subject in this grade. The results of diagnostic evaluation served as reference to the organization of the syllabus, making possible the learning process by matching the sequence of teaching to the students" characteristics and context of the classroom. It is expected that other researchers in this topic can also use the instrument presented in this paper. Este artículo tiene como objetivo presentar los resultados de una evaluación diagnóstica, utilizada como una herramienta para recoger datos sobre el conocimiento previo de los conceptos científicos necesarios para comprender el tema "Tierra y Universo", de un grupo compuesto por 47 alumnos de 6º grado de la escuela primaria. La acción pedagógica del diagnóstico de los conocimientos previos del estudiante antes de enseñarles está justificada por la teoría del Aprendizaje Significativo, propuesta por David Ausubel. La evaluación de diagnóstico consistió en 25 preguntas, las respuestas fueron analizadas y clasificadas objetivando-se su

  18. A Diagnostic Assessment for the Teaching of Astronomy. (Spanish Title: Una Evaluación Diagnóstica Para la Enseñanza de la Astronomia.) Uma Avaliação Diagnóstica Para o Ensino da Astronomia

    NASA Astrophysics Data System (ADS)

    Pacifico Ribeiro de Assis Silveira, Felipa; Soares Gomes de Sousa, Célia Maria; Moreira, Antonio

    2011-07-01

    This article aims to present the results of a diagnostic evaluation, used as a tool for collecting data on prior knowledge of scientific concepts needed to understand the topic "Earth and Universe", from a group comprised of 47 students of 6th grade. The educational method of diagnosing the student's prior knowledge before teaching them is founded on the Meaningful Learning theory, proposed by David Ausubel. The diagnostic evaluation consisted of 25 questions; the answers were analyzed and categorized, making possible their interpretation, which allows us to understand the meanings assigned by the student to these concepts. It follows from the diagnostic evaluation, that the majority of students surveyed had difficulties in exposing scientific concepts on the topic "Earth and Universe" when starting the 6th grade. However, we identified relevant ideas and representations that contributed to the re-signification of scientific concepts proposed for the teaching of the subject in this grade. The results of diagnostic evaluation served as reference to the organization of the syllabus, making possible the learning process by matching the sequence of teaching to the students" characteristics and context of the classroom. It is expected that other researchers in this topic can also use the instrument presented in this paper. Este artículo tiene como objetivo presentar los resultados de una evaluación diagnóstica, utilizada como una herramienta para recoger datos sobre el conocimiento previo de los conceptos científicos necesarios para comprender el tema "Tierra y Universo", de un grupo compuesto por 47 alumnos de 6º grado de la escuela primaria. La acción pedagógica del diagnóstico de los conocimientos previos del estudiante antes de enseñarles está justificada por la teoría del Aprendizaje Significativo, propuesta por David Ausubel. La evaluación de diagnóstico consistió en 25 preguntas, las respuestas fueron analizadas y clasificadas objetivando-se su

  19. Migration of recharge waters downgradient from the Santa Catalina Mountains into the Tucson basin aquifer, Arizona, USA

    NASA Astrophysics Data System (ADS)

    Cunningham, Erin E. B.; Long, Austin; Eastoe, Chris; Bassett, R. L.

    'origine thermonucléaire permettent de caractériser qualitativement les cheminements de l'eau et leurs vitesses. Les isotopes stables ne mettent pas en évidence un effet d'altitude. Les teneurs en tritium indiquent que quelques sources et certains puits fournissent une eau ancienne, alors que l'eau de la plupart des sources date des années soixante ou est plus récente. Resumen Los acuíferos en las cuencas aluviales áridas del sudoeste de los Estados Unidos de América se recargan principalmente por la infiltración procedentes de los arroyos y playas de las propias cuencas y por entradas a lo largo de los límites de las mismas. La cuenca de Tucson, en el sudeste de Arizona es una de ellas. Las Montañas de Santa Catalina forman el contorno septentrional de esta cuenca y reciben una precipitación de más del doble (700mm/año) que la media de la propia cuenca (unos 300mm/año). En este estudio, se utilizaron isótopos ambientales para investigar la infiltración a través de fracturas y juntas superficiales. Se obtuvieron muestras de manantiales y de la escorrentía en las Montañas de Santa Catalina, así como de pozos ubicados al pie de las mismas. Los isótopos estables (Deuterio y Oxígeno-18) y el Tritio procedente de las bombas termonucleares permitieron la caracterización cualitativa de las líneas de flujo y de las velocidades. Los datos procedentes de la medida de isótopos estables no parecen presentar un efecto de altitud. Los valores de Tritio indican que aunque algunos pozos y manantiales descargan agua previa a los ensayos termonucleares, la mayoría descargan aguas de fecha posterior a 1960.

  20. Learning about the Sky from the Environment: An Experience Working Along One Year with Students of Elementary Education. (Spanish Title: Aprendiendo sobre EL Cielo Desde el Entorno: Una Experiencia Trabajando Durante un Año Junto a Estudiantes del Primario.) Aprendendo sobre o Céu a Partir do Entorno: Uma Experiência de Trabalho ao Longo de um Ano com Alunos de Ensino Fundamental

    NASA Astrophysics Data System (ADS)

    Longhini, Marcos Daniel; Gomide, Hanny Angeles

    2014-12-01

    Research developed with 95 students of the 6th year of elementary education in a public school of Uberlândia, Minas Gerais. It was a continuous work from February to December 2013, which led the students to participate in activities of observation of the environment, specifically the sky, analyzing the changes occurred. We focused on the study of variations in temperature, rainfall, day length, variations in the size of the shadows and changes in the aspect of the Moon. Our focus of analysis targeted the discussion of the knowledge that these students had about the topics indicated and as they entered the stage during the implementation of the proposal. The results showed a limited perception that students have of their environment, however, lately expanded due to the undertaken activities, especially in relation to the Moon. Working with systematic measure procedures reveals the careful handling of data so that they become understandable to students, and working with the shadows points towards the students first understand how shadows are formed, and then apply this knowledge to Astronomy. Finally, we conclude that the lived process consisted of an initial step of a work that should be encouraged for the subsequent years of training of these students. Proyecto de investigación desarrollado con 95 alumnos del sexto año de primaria en una escuela pública de Uberlândia, Minas Gerais. Fue un trabajo continuo, de febrero a diciembre de 2013, que llevó a los estudiantes a participar en actividades de observación de su entorno, entre ellas, el cielo, analizando los cambios ocurridos. Nos centramos en el estudio de las variaciones en la temperatura, las precipitaciones, la duración del día, las variaciones en el tamaño de las sombras y los cambios en los aspectos de la Luna. Nuestro foco de análisis se centró en discutir el conocimiento que estos estudiantes tenían sobre los temas indicados al inicio y término de la propuesta. Los resultados mostraron una

  1. Hydrochemical tracers in the middle Rio Grande Basin, USA: 2. Calibration of a groundwater-flow model

    NASA Astrophysics Data System (ADS)

    Sanford, Ward E.; Plummer, L. Niel; McAda, Douglas P.; Bexfield, Laura M.; Anderholm, Scott K.

    té construit avec les logiciels MODFLOW, MODPATH et UCODE, et calibré en utilisant les concentrations en 14C et la position de certaines zones définies par les données hydrochimiques. L'estimation de certains paramètres a été réalisée en utilisant une combinaison de techniques de régression non linéaire et une méthode de recherche exhaustive (Brute Force Search) de l'erreur minimum entre les résultats des observations et les simulations. Les valeurs de la recharge calibrée sont substantiellement plus basses que celles estimées dans les modèles antérieurs. Les résultats d'une simulation en régime transitoire sur 30.000 ans suggèrent que la recharge au maximum de la dernière glaciation (last glacial maximum, LGM) était 10 fois supérieure au taux actuel, mais que la recharge qui a suivit la LGM était plus bas que la recharge actuelle. La calibración de un modelo de aguas subterráneas con el apoyo de datos hidroquímicos ha demostrado que la recarga relativamente baja en la cuenca media del Río Grande es probablemente responsable de una depresión de aguas subterráneas en el centro de la cuenca y de la presencia de una cantidad considerable de agua del Río Grande en el acuífero del Grupo Santa Fe. Los modelos propuestos con anterioridad para la cuenca tenían dificultades para reproducir estas características ya que no tenían datos hidroquímicos que permitieran delimitar los ritmos y distribución de recarga. El objetivo del presente estudio consistió en utilizar una gran cantidad de datos hidroquímicos disponibles para ayudar a calibrar los parámetros del modelo, incluyendo los ritmos de recarga. El modelo se construyó utilizando los modelos MODFLOW, MODPATH, y UCODE del USGS, mientras que la calibración se realizó en base a concentraciones de 14C y a la posición de ciertas zonas definidas con los datos hidroquímicos. La estimación de parámetros se realizó en base a una combinación de técnicas de regresiones no lineares y a una b

  2. Hydrochemical tracers in the middle Rio Grande Basin, USA: 2. Calibration of a groundwater-flow model

    NASA Astrophysics Data System (ADS)

    Sanford, Ward E.; Plummer, L. Niel; McAda, Douglas P.; Bexfield, Laura M.; Anderholm, Scott K.

    té construit avec les logiciels MODFLOW, MODPATH et UCODE, et calibré en utilisant les concentrations en 14C et la position de certaines zones définies par les données hydrochimiques. L'estimation de certains paramètres a été réalisée en utilisant une combinaison de techniques de régression non linéaire et une méthode de recherche exhaustive (Brute Force Search) de l'erreur minimum entre les résultats des observations et les simulations. Les valeurs de la recharge calibrée sont substantiellement plus basses que celles estimées dans les modèles antérieurs. Les résultats d'une simulation en régime transitoire sur 30.000 ans suggèrent que la recharge au maximum de la dernière glaciation (last glacial maximum, LGM) était 10 fois supérieure au taux actuel, mais que la recharge qui a suivit la LGM était plus bas que la recharge actuelle. La calibración de un modelo de aguas subterráneas con el apoyo de datos hidroquímicos ha demostrado que la recarga relativamente baja en la cuenca media del Río Grande es probablemente responsable de una depresión de aguas subterráneas en el centro de la cuenca y de la presencia de una cantidad considerable de agua del Río Grande en el acuífero del Grupo Santa Fe. Los modelos propuestos con anterioridad para la cuenca tenían dificultades para reproducir estas características ya que no tenían datos hidroquímicos que permitieran delimitar los ritmos y distribución de recarga. El objetivo del presente estudio consistió en utilizar una gran cantidad de datos hidroquímicos disponibles para ayudar a calibrar los parámetros del modelo, incluyendo los ritmos de recarga. El modelo se construyó utilizando los modelos MODFLOW, MODPATH, y UCODE del USGS, mientras que la calibración se realizó en base a concentraciones de 14C y a la posición de ciertas zonas definidas con los datos hidroquímicos. La estimación de parámetros se realizó en base a una combinación de técnicas de regresiones no lineares y a una b

  3. The Combine Project: An Experience in a Dual-Language Classroom = El proyecto de la cosechadora: una experiencia en una clase bilingue.

    ERIC Educational Resources Information Center

    Wilson, Rebecca

    This article, also available in Spanish, describes what happened when a bilingual kindergarten class in West Liberty, Iowa, investigated a combine. The dual-language Kindergarten program supports content area instruction in both Spanish and English. The first part of the article tells the story of the Combine Project, this class's first project…

  4. A thick lens of fresh groundwater in the southern Lihue Basin, Kauai, Hawaii, USA

    NASA Astrophysics Data System (ADS)

    Izuka, Scot; Gingerich, Stephen

    2002-11-01

    ézométriques sont plusieurs centaines de mètres au-dessus du niveau de la mer à quelques kilomètres de la côte. On pensait jusqu'à présent que des niveaux piézométriques aussi élevés dans des îles de volcans en bouclier n'existaient que dans le cas de nappes perchées ou de blocage par un dyke, mais dans le sud du bassin de Lihue, des niveaux piézométriques élevés existent dans un aquifère apparemment sans dyke et complètement saturé. Un nouveau modèle conceptuel de présence d'eau souterraine dans les îles de volcans en bouclier est nécessaire pour expliquer les conditions observées dans le sud du bassin de Lihue. Resumen. Se ha determinado la existencia de un espeso lentejón de aguas subterráneas dulces en una extensa región de baja permeabilidad situada al sur de la cuenca de Lihue, en Kauai (Hawaii, Estados Unidos de América). El modelo conceptual convencional de las aguas subterráneas en Hawai y en otros cinturones de islas volcánicas no considera la existencia de lentejones tan gruesos de agua dulce. En dicho modelo, las acumulaciones de flujos de lava que constituyen la mayoría de los cinturones volcánicos se desarrollan en grandes áreas de permeabilidad relativamente baja y con pequeños lentejones de agua dulce. En el sur de la cuenca de Lihue, las lavas de relleno y los sedimentos forman una región extensa de baja conductividad hidráulica regional que, con el clima húmedo de la zona, está saturada hasta prácticamente la superficie del terreno, mientras que el nivel freático se encuentra centenares de metros por encima del nivel del mar a pocos kilómetros de la línea de costa. Se creía hasta ahora que, en los cinturones de islas volcánicas, tales niveles sólo tenían lugar en acuíferos colgados o en condiciones de confinamiento por diques, pero, al sur de la cuenca de Lihue, se dan en acuíferos completamente saturados que no están limitados por diques. Se necesita un nuevo modelo conceptual de las aguas subterráneas en

  5. Una nina adoptada su conducta en el jardin de infantes (An Adopted Girl's Conduct in Preschool).

    ERIC Educational Resources Information Center

    Truscello de Mason, Marile

    1994-01-01

    Reports observations made by a preschool teacher in Argentina about a four-year-old adopted girl in her preschool. The teacher noticed problems between the girl and her adoptive mother, who tried to prevent the girl from remembering her past. The teacher particularly noticed changes in the girl's drawings. (AA)

  6. Una Experiencia Pedagogica en el Jardin Infantil "La Cabana" (A Teaching Experience in "La Cabana" Kindergarten).

    ERIC Educational Resources Information Center

    de la Vega, B.

    1992-01-01

    Reviews the history of La Cabana kindergarten, which provides preschool education and meals for 100 children and sewing classes for mothers in a working class neighborhood in Bogota, Colombia. Describes the implementation of a new curriculum which develops child creativity through free choice of activities around a common project. (AC)

  7. GERBERTVS una nuova rivista per l'astronomia e la scienza nell'alto medioevo

    NASA Astrophysics Data System (ADS)

    Sigismondi, C.

    GERBERTVS appears as an international e-journal on medieval science, namely astronomy. It has been created to gather all the studia promoted on Gerbert of Aurillac, the most prominent figure of the tenth century: astronomer, organ builder and music theoretician, mathematician, philosopher, and finally pope with the name of Silvester II (999-1003). Here is presented the first volume (2010) published in the institutional web site www.icra.it/gerbertus with the ISSN 2038-355X.

  8. "Necesita una vacuna": what Spanish-speakers want in text-message immunization reminders.

    PubMed

    Ahlers-Schmidt, Carolyn R; Chesser, Amy; Brannon, Jennifer; Lopez, Venessa; Shah-Haque, Sapna; Williams, Katherine; Hart, Traci

    2013-08-01

    Appointment reminders help parents deal with complex immunization schedules. Preferred content of text-message reminders has been identified for English-speakers. Spanish-speaking parents of children under three years old were recruited to develop Spanish text-message immunization reminders. Structured interviews included questions about demographic characteristics, use of technology, and willingness to receive text reminders. Each participant was assigned to one user-centered design (UCD) test: card sort, needs analysis or comprehension testing. Respondents (N=54) were female (70%) and averaged 27 years of age (SD=7). A card sort of 20 immunization-related statements resulted in identification of seven pieces of critical information, which were compiled into eight example texts. These texts were ranked in the needs assessment and the top two were assessed for comprehension. All participants were able to understand the content and describe intention to act. Utilizing UCD testing, Spanish-speakers identified short, specific text content that differed from preferred content of English-speaking parents. PMID:23974378

  9. Luchando por una educacion: A Qualitative Understanding of Undocumented Latina/o College Student Motivation

    ERIC Educational Resources Information Center

    Navarro, Elvia Lorena

    2013-01-01

    The current qualitative study explored the factors and resources that motivate undocumented Latino/a college students to persist in higher education. Through the data obtained from the four qualitative open-ended survey questions, a content analysis revealed specific codes, themes, and subthemes addressing the factors and resources that motivate…

  10. Historia de vidas de profesoras de ciencias: Hacia una ensenanza cientifica de calidad

    NASA Astrophysics Data System (ADS)

    Vega Osorio, Melba

    The purpose of this research was to capture the memories, practices, thoughts and philosophies of education that four experienced Science teachers have accumulated through the years. The life story qualitative research design was used in order to collect more meaningful information from the participants amenable to in depth analysis and interpretation. The life stories interviews were conducted using an interview protocol especially designed for the study. The interviews were recorded and transcribed. The questions that guided this research are: 1. What are the meanings that science teachers give to their educational practices? 2. How did the life experiences of the participants contribute to their success as science teachers? 3. How did the participants' educational practices change and evolve over time? 4. What does teaching science mean in the life of the participants? 5. Which reflections arise from the work of the participants that impact the teaching of science? 6. What are the participants' conceptions about teachers' professional development? 7. What are the participants' contributions to the field of scientific education? Wolcott's (1994) DAI analytical model was used for the analysis of the information and the narratives were written following the three dimensions of the model: description, analysis and interpretation. According to the life stories of the participants, being a teacher requires more than teaching the content. To be a successful and an exemplary science teacher, they have to live the teaching vocation, with dedication, passion, commitment and love for teaching, for students and science; teachers have to give their best for the students, even if it means making personal sacrifices; they should keep updated in knowledge (content) and in educational innovations (strategies); emphasizing both the theoretical and the practical aspects in the field of science, and being an inspirational guide for students.

  11. Per una pedagogia della comprensione interculturale (A Method for Teaching Intercultural Understanding).

    ERIC Educational Resources Information Center

    Titone, Renzo

    1986-01-01

    Defines true bilingualism as biculturalism, explains what "understanding" another culture means, and describes how to evaluate the effectiveness of teaching methods for students from different cultures. Ideally, individuals learning a second language will acquire a "metacultural" consciousness that permits them to be comfortable in any cultural…

  12. Mediacion en educacion especial: Una guia para los padres (Special Education Mediation: A Guide for Parents).

    ERIC Educational Resources Information Center

    Consortium for Appropriate Dispute Resolution in Special Education (CADRE), Eugene, OR.

    Designed for Spanish-speaking parents of students with disabilities living in Oregon, this brochure describes the general mediation process that parents can use to resolve special education services disputes with schools. It begins by discussing what mediation is and the characteristics of a trained mediator. It addresses the requirement for…

  13. Una guia para los padres a la educacion preescolar (A Parent's Guide to Preschool).

    ERIC Educational Resources Information Center

    Dodge, Diane Trister; Phinney, Joanna

    This booklet, in Spanish- and Japanese-language versions, offers parents guidance on how to partner with teachers to help their children acquire the skills, attitudes, and habits to do well in school and throughout life. The booklet begins with a description of how preschool children learn, and continues with a discussion of the goals of the…

  14. Renovando la Esperanza por una Educacion sin Exclusiones (Rekindling the Hope for an Education without Exclusion).

    ERIC Educational Resources Information Center

    Revista Interamericana de Educacion de Adultos, 2001

    2001-01-01

    Articles in this issue, written in Spanish, focus on the following: current status and outlook of youth and adult education; opening statement of the 50th anniversary commemoration; regional framework for the education of youth and adults in Latin America and the Caribbean; interculturalism and the education of youth and adults; participation of…

  15. I Didn't Say a Word/No Dije una Palabra.

    ERIC Educational Resources Information Center

    Bielawski, Joseph G.; Pickens, Marjorie

    This bilingual English/Spanish book of captioned photographs and its related teaching manual were created as a joyful experience in nonverbal communication for children and adults. It is intended to sharpen awareness of nonverbal messages expressed by children in their everyday environment. To help develop self-understanding and to encourage oral…

  16. Una guia a los padres acerca del sistema educacional = A Parent's Guide to Education. Spanish Edition.

    ERIC Educational Resources Information Center

    Rowch, Nancy

    A guide for Spanish-speaking parents of elementary and secondary school students in Nebraska provides in Spanish, and then in English, information concerning education in the state. Topics covered include: state policy concerning enrolling children in school, medical requirements for enrollment and attendance, the school curriculum requirements…

  17. Una Visita al Viejo San Juan (A Visit to Old San Juan).

    ERIC Educational Resources Information Center

    Cabello, Victor; And Others

    Written in Spanish, this black and white illustrated booklet provides a tour of Old San Juan, Puerto Rico's oldest and most historic city. Brief historical information is provided on the Perro de San Jeronimo, a statue of a barking dog found in front of the Castillo; Plaza de Colon, a small plaza dedicated to Christopher Columbus; the Catedral de…

  18. Borders and Identity: A Resource Guide for Teachers = Identidad y Fronteras: Una Guia para Maestros.

    ERIC Educational Resources Information Center

    Belauus, Betty; Botein, Emily; Cadaval, Olivia

    The materials in this resource guide include a four-part video, a poster-size cultural map with additional exercises, and the five sections of this guide. The unit, presented in English and Spanish, intends to introduce students to the peoples and cultures of the U.S.-Mexico border, to explore the concept of borders in their own communities, to…

  19. Estrellas Wolf-Rayet y el medio interestelar: huellas de una fuerte interacción

    NASA Astrophysics Data System (ADS)

    Cichowolski, S.; Arnal, E. M.

    Se presentan resultados observacionales de un estudio de la distribución de hidrógeno neutro en los alrededores de estrellas Wolf-Rayet (WR) galácticas. Los datos de la línea de 21 cm provienen de observaciones de resolución angular intermedia (9') tomadas con el radiotelescopio de Effelsberg. La muestra está compuesta por cuatro WR de la serie del nitrógeno (WN): WR130, WR131, WR155, WR156 y tres WR de la serie del carbono (WC): WR154, WR117 y WR126. Este análisis ha permitido detectar cavidades y envolturas de HI en expansión presumiblemente vinculadas a dichas estrellas.

  20. Mi Vecina es una Mujer Colpeada (My Neighbor Is a Battered Woman).

    ERIC Educational Resources Information Center

    Howard, Melissa

    This book, the Spanish version of "My Neighbor is a Battered Woman," is intended as a general introduction to the problems of battered women. The format for part 1 consists of the presentation of facts about wife beating, i.e., who are victims, characteristics of batterers, the environment in which family violence exists, and services for battered…

  1. Validacion de Una Version Preliminar del Child Abuse Potential Inventory para su Uso en Argentina.

    ERIC Educational Resources Information Center

    Bringiotti, Maria Ines; Barbich, Alejandra; De Paul, Joaquin

    1998-01-01

    The validity of the Child Abuse Potential (CAP) Inventory was tested with a sample of 40 child physical abusers and 40 nonabusers in Argentina. More than 97% of subjects were correctly classified as abusing or nonabusing individuals. The article is in Spanish. (CR)

  2. Confieso que Divulgo. Reflexiones y Experiencias de una Astrofísica

    NASA Astrophysics Data System (ADS)

    Rodríguez Hidalgo, I.

    Este artículo presenta algunas reflexiones en torno a la popularización de la Ciencia, desarrolladas a lo largo de mi trayectoria profesional, un camino inacabado desde la intuición al oficio. Tras revisar las señas de identidad de la divulgación científica, se exponen ideas, experiencias y recursos, cribados por la práctica y su posterior análisis crítico. Se destacan las actividades relacionadas con la Astronomía, que se cuentan entre las más espectaculares y gratificantes. Confessions of a popularizer: This paper presents some author's thoughts about scientific outreach, developed along her professional path, an unfinished way from intuition to trade. First, identity signs of outreach are revised; then, ideas, experiences and resources, sifted by practice and further critical analysis, are reviewed. Activities related to Astronomy, being one of the most spectacular and rewarding, are remarked 1

  3. PREVENCIÓN DEL VIH/SIDA EN LOS CIRCUITOS DE LEVANTE HSH: UNA ASIGNATURA PENDIENTE.

    PubMed

    Barreda, Victoria; Carballo-Dieguez, Alex; Marone, Rubén; Balán, Iván; Pando, María Ángeles; Avila, María Mercedes

    2010-12-01

    A partir de un relevamiento de tipo etnográfico, se describen lugares de encuentro de HSH en la Ciudad de Buenos Aires y sus prácticas sexuales. El reconocimiento de tales espacios, así como las características que asumen en ellos los encuentros sexuales entre los HSH, plantean obstáculos específicos en la adopción de comportamientos preventivos y, asimismo, generan nuevos desafíos para las actividades de prevención. Se plantean las dificultades y debates conceptuales que la misma categoría presenta, y sus consecuencias en el abordaje preventivo y teórico-metodológico para las ciencias sociales. Además, se proponen nuevos interrogantes acerca de los alcances y las limitaciones del modelo preventivo del VIH/Sida para HSH.

  4. Una Guia Para Padres Para El Cuidado de Ninos (A Parent's Guide to Child Care).

    ERIC Educational Resources Information Center

    Oregon State Dept. of Human Resources, Salem.

    This booklet was designed to help parents in Oregon in finding and financing child care for their children. The first section of the booklet provides information on the Oregon Department of Human Resources' Adult and Family Services (AFS) Division's Aid for Dependent Children (ADC) and Employment Related Day Care (ERDC) programs. This section…

  5. Guia Practica para una Evaluacion Alternativa (Practical Guide to Alternative Assessment).

    ERIC Educational Resources Information Center

    Herman, Joan L.; Aschbacher, Pamela R.; Winters, Lynn

    Guidance is offered in Spanish on the creation and use of alternative assessment, and a process model is presented that links assessment with curriculum and instruction, based on contemporary theories of learning and cognition. The introductory chapter provides background on the purposes of assessment and the need for new alternatives, with an…

  6. The Complete Chloroplast and Mitochondrial Genomes of the Green Macroalga Ulva sp. UNA00071828 (Ulvophyceae, Chlorophyta)

    PubMed Central

    Melton, James T.; Leliaert, Frederik; Tronholm, Ana; Lopez-Bautista, Juan M.

    2015-01-01

    Sequencing mitochondrial and chloroplast genomes has become an integral part in understanding the genomic machinery and the phylogenetic histories of green algae. Previously, only three chloroplast genomes (Oltmannsiellopsis viridis, Pseudendoclonium akinetum, and Bryopsis hypnoides) and two mitochondrial genomes (O. viridis and P. akinetum) from the class Ulvophyceae have been published. Here, we present the first chloroplast and mitochondrial genomes from the ecologically and economically important marine, green algal genus Ulva. The chloroplast genome of Ulva sp. was 99,983 bp in a circular-mapping molecule that lacked inverted repeats, and thus far, was the smallest ulvophycean plastid genome. This cpDNA was a highly compact, AT-rich genome that contained a total of 102 identified genes (71 protein-coding genes, 28 tRNA genes, and three ribosomal RNA genes). Additionally, five introns were annotated in four genes: atpA (1), petB (1), psbB (2), and rrl (1). The circular-mapping mitochondrial genome of Ulva sp. was 73,493 bp and follows the expanded pattern also seen in other ulvophyceans and trebouxiophyceans. The Ulva sp. mtDNA contained 29 protein-coding genes, 25 tRNA genes, and two rRNA genes for a total of 56 identifiable genes. Ten introns were annotated in this mtDNA: cox1 (4), atp1 (1), nad3 (1), nad5 (1), and rrs (3). Double-cut-and-join (DCJ) values showed that organellar genomes across Chlorophyta are highly rearranged, in contrast to the highly conserved organellar genomes of the red algae (Rhodophyta). A phylogenomic investigation of 51 plastid protein-coding genes showed that Ulvophyceae is not monophyletic, and also placed Oltmannsiellopsis (Oltmannsiellopsidales) and Tetraselmis (Chlorodendrophyceae) closely to Ulva (Ulvales) and Pseudendoclonium (Ulothrichales). PMID:25849557

  7. Chile: Una Vision Politica, Economica y Social (Chile: A Political, Economic, and Social View).

    ERIC Educational Resources Information Center

    Cortes-Hwang, Adriana

    1972-01-01

    This address seeks to explain in brief the historical background and political, economic, and social conditions leading to the democratic election of a Marxist president in Chile. A historical sketch of Chilean government from independence in 1810 is provided with a description of the situation just before Salvador Allende's election in 1969. Some…

  8. [Clip Sheets from BOCES. Opportunities. Health. Careers. = Oportunidades. Salud. Una Camera En...

    ERIC Educational Resources Information Center

    State Univ. of New York, Geneseo. Coll. at Geneseo. Migrant Center.

    This collection of 83 clip sheets, or classroom handouts, was created to help U.S. migrants learn more about health, careers, and general "opportunities" including education programs. They are written in both English and Spanish and are presented in an easily understandable format. Health clip-sheet topics include the following: Abuse; AIDS;…

  9. "Una Nacion Acorralada": Southern Peruvian Quechua Language Planning and Politics in Historical Perspective.

    ERIC Educational Resources Information Center

    Mannheim, Bruce

    1984-01-01

    Outlines history of Spanish colonial policies toward Southern Peruvian Quechua and points out those issues under debate concerning the indigenous languages. The central issue of the "Andean language debate" continues to be whether or not the Quechua have a right to exist as a separate community. (SL)

  10. Cuentos Faciles. Habia una vez.... (Simple Stories. There was a Time....) (Presenting Simple Stories in Spanish.)

    ERIC Educational Resources Information Center

    Arroyo, Nancy; And Others

    For Spanish-speaking children, simple stories in Spanish, told in a natural language suitable for their age, are not only entertaining, but a means of developing vocabulary and concepts. Non-Spanish-speaking children, too, need exposure to more language than they can understand word for word. However, the simple stories for the Spanish speaker…

  11. Historia Verdadera de Una Gota de Miel. (The True Story of a Drop of Honey).

    ERIC Educational Resources Information Center

    Galarza, Ernesto

    Part of the series "Coleccion Mini-Libros" (Mini-Book Collection), the booklet is a factual account of the life of a bee. Designed to provide a tool for education of the Spanish-speaking child, as well as to stimulate an interest in Spanish among the youth of our country, the publication is a compilation of photographs with a description of bees…

  12. Diseno y desarrollo de una base de datos bibliograficos (Design and Development of a Bibliographic Database).

    ERIC Educational Resources Information Center

    Mattenella, L. E.; Velazco, J. W.

    1992-01-01

    This article briefly describes the development of bibliographic retrieval systems in the Instituto de Beneficio di Minerales (IN BE MI) in Salta, Argentina, using the Mini-micro CDS/ISIS software developed by Unesco. (LRW)

  13. Tengo una Bomba: The Paralinguistic and Linguistic Conventions of the Oral Practice Chismeando.

    ERIC Educational Resources Information Center

    Hall, Joan Kelly

    1993-01-01

    This article offers a linguistic and paralinguistic explication of the oral practice of chismeando (gossiping) as engaged in by a group of women from the Dominican Republic. A culture-specific study of the structuring resources by which the participants construct, maintain, and/or modify their in-group identities in everyday oral practice is…

  14. Habitos Alimentarios e Higiene Dental en una Poblacion Preescolar de Madrid.

    ERIC Educational Resources Information Center

    Lafarga, R. Tarazona; And Others

    1991-01-01

    Nutriment habits and oral hygiene in a preschool population in Madrid were studied by stratification in public or private schools. Significant differences were found only with regard to consumption of fish. Vegetable and fruit consumption was low in both groups, but not statistically significant. (SH)

  15. Protegiendo a nuestros ninos: una guia de accion (Safeguarding Our Children: An Action Guide).

    ERIC Educational Resources Information Center

    American Institutes for Research, Washington, DC. Center for Effective Collaboration and Practice.

    Although most schools are safe, they all can be safer. Improving school safety requires the strategic investment of time and dollars--scarce resources for which there are competing demands. Fortunately, schools that strategically coordinate schoolwide efforts are more likely to improve academic performance as well as reduce behavior problems. This…

  16. Perspectiva sobre una Personalidad Senera: Carmen Fischer Ramirez (Perspective on a Singular Personality: Carmen Fischer Ramirez).

    ERIC Educational Resources Information Center

    Quezeda, Dina Alarcon

    1992-01-01

    Traces the career of Carmen Fischer Ramirez, focusing on her work in improving early childhood education in Chile. Reviews her university career, work with the World Organization for Early Childhood Education, and major publications. (AC)

  17. Evolución de una protuberancia observada por el HASTA

    NASA Astrophysics Data System (ADS)

    Luoni, M. L.; Francile, C.

    Prominence eruptions are one of the most spectacular manifestations of solar activity; in addition to flares and coronal mass ejections. Both filaments and prominences are chromospheric material suspended in the corona by the magnetic field. Hence their importance as tracers of field ejections. Some parts of their magnetic structure are not well understood; especially with regard to the loss of stability. On 06 December 2010 the H-Alpha Telescope for Argentina (HASTA) observed a prominence in the eastern solar limb including when part of it was ejected. In this paper the evolution of the filament is analyzed; its structure before and after the eruption; determining parameters that characterize it from HASTA data. FULL TEXT IN SPANISH

  18. The Struggle for Mexico's First Gay-Straight Alliance: Como una Novela Real

    ERIC Educational Resources Information Center

    Macgillivray, Ian K.

    2006-01-01

    In 2004, a group of high school students at a private American school in Mexico City started the first gay-straight alliance in Mexico. A small group of conservative parents and a Mormon principal organized in opposition. This paper details the students' struggle to keep their club and offers lessons learned about student activism, school change,…

  19. Areas Nacionales de Estudio Ambiental: Una Guia. (National Environmental Study Area: A Guide).

    ERIC Educational Resources Information Center

    National Park Service (Dept. of Interior), Washington, DC.

    This booklet, the Spanish version of SE 014 817, is a guide for teachers and resource managers who are interested in establishing National Environmental Study Areas (NESA) or interested in receiving NESA recognition for their on-going environmental study area programs. It outlines the characteristics and procedures of the program; the nature,…

  20. Exploración del Sistema Solar -- Una mirada hacia el futuro

    NASA Video Gallery

    ¿Piensas que ya sabemos todo acerca de nuestro sistema solar? La realidad es que apenas hemos comenzado con lo que hay para conocer. Únete a la NASA, en el envío de misiones a los confines del sist...

  1. Sistemas Eolicos Pequenos para Generacion de Electricidad; Una guia para consumidores en los EE.UU.

    SciTech Connect

    Not Available

    2007-09-01

    This Spanish version of the popular Small Wind Electric Systems: A U.S. Consumer's Guide provides consumers with information to help them determine whether a small wind electric system can provide all or a portion of the energy they need for their home or business based on their wind resource, energy needs, and economics. Topics include how to make a home more energy efficient, how to choose the correct turbine size, the parts of a wind electric system, how to determine whether enough wind resource exists, how to choose the best site for a turbine, how to connect a system to the utility grid, and whether it's possible to become independent of the utility grid using wind energy. In addition, the cover of the guide contains a list of contacts for more information.

  2. Sistemas Eolicos Pequenos para Generacion de Electricidad: Una guia para consumidores en Nuevo Mexico

    SciTech Connect

    Not Available

    2007-09-01

    This Spanish version of the popular Small Wind Electric Systems: A New Mexico Consumer's Guide provides consumers with information to help them determine whether a small wind electric system can provide all or a portion of the energy they need for their home or business based on their wind resource, energy needs, and economics. Topics include how to make a home more energy efficient, how to choose the correct turbine size, the parts of a wind electric system, how to determine whether enough wind resource exists, how to choose the best site for a turbine, how to connect a system to the utility grid, and whether it's possible to become independent of the utility grid using wind energy. In addition, the cover of the guide contains a list of contacts for more information.

  3. The Puerto Ricans--Two Communities, One Culture. (Los Puertorriquenos--Dos Comunidades, Una Cultura.)

    ERIC Educational Resources Information Center

    Vivo, Paquita

    1980-01-01

    Puerto Rican roots stem from the ethnic mixture of Indians, Europeans, and Africans. This article describes the advent of each of the groups on the island, the historical and cultural impact each made, and the retention of heritage among Puerto Rican migrants to the U.S. (DS)

  4. Una ricerca sul bilinguismo precoce italo-inglese (Research on Early Italian-English Bilingualism).

    ERIC Educational Resources Information Center

    Taeschner, Traute; And Others

    1978-01-01

    The purpose of this study was to attempt to verify the theory of Taeschner and Volterra (1976) that bilingual children pass through three distinct phases while becoming perfectly bilingual. The 12 subjects were English-Italian bilingual children between the ages of 1.6 and 4.6. (CFM)

  5. Musings on "Densidades, Potenciales y Funciones Asociadas a una Galaxia Reducida" by Poveda et al. (1960)

    NASA Astrophysics Data System (ADS)

    López-Cruz, O.; Aguilar, L. A.; Añorve, C.

    2011-04-01

    We present a critical review on the paper "Densities, Potentials and related functions for a spherical reduced galaxy" by A. Poveda, R. Iturriaga, and I. Orozco published in 1960 in the Boletín de los Observatorios de Tonantzintla y Tacubaya (BOTT), 2, 20, 3.

  6. Community Resources Guide for Central Florida = Una Guia de Recursos en la Comunidad de Florida Central.

    ERIC Educational Resources Information Center

    Medina, Linda, Comp.

    Designed to orient Hispanic refugees to the services that are available in Central Florida, this bilingual guide consists of a section of general information on living and working in the United States and a section devoted to various public and private agencies. Provided first are addresses and phone numbers of various government agencies:…

  7. PREVENCIÓN DEL VIH/SIDA EN LOS CIRCUITOS DE LEVANTE HSH: UNA ASIGNATURA PENDIENTE.

    PubMed

    Barreda, Victoria; Carballo-Dieguez, Alex; Marone, Rubén; Balán, Iván; Pando, María Ángeles; Avila, María Mercedes

    2010-12-01

    A partir de un relevamiento de tipo etnográfico, se describen lugares de encuentro de HSH en la Ciudad de Buenos Aires y sus prácticas sexuales. El reconocimiento de tales espacios, así como las características que asumen en ellos los encuentros sexuales entre los HSH, plantean obstáculos específicos en la adopción de comportamientos preventivos y, asimismo, generan nuevos desafíos para las actividades de prevención. Se plantean las dificultades y debates conceptuales que la misma categoría presenta, y sus consecuencias en el abordaje preventivo y teórico-metodológico para las ciencias sociales. Además, se proponen nuevos interrogantes acerca de los alcances y las limitaciones del modelo preventivo del VIH/Sida para HSH. PMID:21874154

  8. Per una didattica con il laboratorio linguistico (Teaching with the Language Laboratory)

    ERIC Educational Resources Information Center

    Freddi, Giovanni

    1977-01-01

    Maintains that the language laboratory is the best way to aid language students in developing linguistic competence. The laboratory equipment needed is described and a pedagogical program for its effective use is outlined. (Text is in Italian.) (CFM)

  9. Una Metodologia de Analisis de la Interaccion Alumno-Orgendaor en la Investigacion Sobre Informatica Educativa.

    ERIC Educational Resources Information Center

    Estepa, A.; And Others

    1992-01-01

    The recording of the interaction between pupil and computer is one of the data sources frequently used in research on the use of computers in teaching. Describes the analysis methodology of these recordings to determine the use of computers in statistics and its adaptation to other research work on the use of computers in education. (Author/MDH)

  10. Una experiencia europea de innovacion pedagogica basada en la escritura de un ibro.

    ERIC Educational Resources Information Center

    Montane, Mireia; Roc, Merce

    2002-01-01

    Describes a European project based on writing a book from an educational perspective. Participants included 18 schools from 13 countries. The study originated in a Spanish Comenius 3.1 project, which determined that university teams would visit "book writing" schools, supporting teachers and analyzing and publishing their experiences. After…

  11. Establishing the Empirical Relationship Between Non-Science Majoring Undergraduate Learners' Spatial Thinking Skills and Their Conceptual Astronomy Knowledge. (Spanish Title: Estableciendo Una Relación Empírica Entre el Razonamiento Espacial de los Estudiantes de Graduación de Carreras no Científicas y su Conocimento Conceptual de la Astronomía.) Estabelecendo Uma Relação Empírica Entre o RacioCínio Espacial dos Estudantes de Graduação EM Carreiras Não Científicas e Seu Conhecimento Conceitual da Astronomia

    NASA Astrophysics Data System (ADS)

    Heyer, Inge; Slater, Stephanie J.; Slater, Timothy F.

    2013-12-01

    The astronomy education community has tacitly assumed that learning astronomy is a conceptual domain resting upon spatial thinking skills. As a first step to formally identify an empirical relationship, undergraduate students in a non-major introductory astronomy survey class at a mediumsized, Ph.D. granting, mid-western US university were given pre- and post-astronomy conceptual diagnostics and spatial reasoning diagnostics, Instruments used were the "Test Of Astronomy Standards" and "What Do You Know?" Using only fully matched data for analysis, our sample consisted of 86 undergraduate non-science majors. Students' normalized gains for astronomy surveys were low at .26 and .13 respectively. Students' spatial thinking was measured using an instrument designed specifically for this study. Correlations between the astronomy instruments' pre- to post-course gain scores and the spatial assessment instrument show moderate to strong relationships suggesting the relationship between spatial reasoning and astronomy ability can explain about 25% of the variation in student achievement. La comunidad de educación en astronomía ha supuesto de forma tácita que el aprendizaje de la astronomía consiste en un dominio conceptual fundamentado en el razonamiento espacial. Como un primer paso para identificar formalmente una relación empírica entre estas dos cosas, utilizamos como muestra los estudantes de graduación de carreras no científicas de un curso experimental en una universidad norteamericana del medioeste de porte mediano con programa de Doctorado em curso, en el cual estos estudiantes se sometieron a un diagnóstico de razonamiento espacial y conceptos astronómicos antes e después del mismo. Las herramientas utilizadas fueron el Test Of Astronomy Standards (TOAST) y el cuestionario What do you know? Utilizando solo los datos completamente consistentes para este análisis, nuestra muestra consistió en 86 estudantes de graduación. Las mejoras, depués de

  12. Hydrochemical tracers in the middle Rio Grande Basin, USA: 1. Conceptualization of groundwater flow

    NASA Astrophysics Data System (ADS)

    Plummer, L. Niel; Bexfield, Laura M.; Anderholm, Scott K.; Sanford, Ward E.; Busenberg, Eurybiades

    zones hydro-chimiques reflète principalement la distribution moderne des charges hydrauliques mais est incohérente avec une dépression dans le niveau d'eau dans la partie centre-ouest du bassin, ce qui indique que cette dépression est un élément transitoire du système aquifère plutôt qu'un élément à long terme. Les âges radiocarbones ajustés aux réactions géochimiques et aux processus de mélange et d'évapotranspiration/dilution qui ont lieu dans l'aquifère sont presque identiques aux âges non ajustés et varient de la période moderne jusqu'à 30 ka. Les gradients d'âge établis à partir des nids de piézomètres s'étendent de 0.1 à 2 a cm-1 et suggèrent un taux de recharge d'environ 3 cm a-1 le long du front des montagnes à l'est et pour l'infiltration provenant du Rio Grande près d'Albuquerque. Il y a eu substantiellement moins de recharge le long du front des montagnes à l'est, au nord et au sud d'Albuquerque. Se utilizaron datos químicos e isotópicos de agua subterránea a lo largo de la cuenca central del río Grande, Nuevo México, EEUU, para identificar y mapear el flujo de agua subterránea de 12 fuentes de agua a la cuenca para evaluar edades por medio de radio carbon y para refinar el modelo conceptual del sistema acuífero del Grupo Santa Fé. Se puede establecer zonas hidrotérmicas que representan el flujo de agua subterránea a lo largo de miles a miles de decenas de años en grandes distancias a través del sistema acuífero principalmente siliclástico. Las ubicaciones de las zonas hidroquímicas mayormente reflejan la distribucion de la cabeza hidráulica pre-desarollo moderna pero son inconsistentes con una depresión en los niveles de agua pre-desarollo en la zona central oeste de la cuenca. Esto indica que esta depresión es un rasgo transitorio y no un rasgo de largo plazo del sistema acuífero. Las edades de radio carbon ajustadas para los procesos de reaciones geoquímicas, de mezclado y de evapotranspiraci

  13. Application of the groundwater-balance equation to indicate interbasin and vertical flow in two semi-arid drainage basins, Mexico

    NASA Astrophysics Data System (ADS)

    Carrillo-Rivera, J. J.

    2000-09-01

    conclusion est qu'une étude par bilan de la nappe est une méthode qui n'est pas satisfaisante pour déterminer certains paramètres comme le coefficient d'emmagasinement. En particulier, l'approche par le bilan de la nappe donne des résultats qui ne sont pas fiables lorsque l'on ignore la drainance verticale ou que l'on ne peut pas la définir correctement. L'existence d'une drainance verticale est prouvée par des températures de l'eau souterraine pouvant être supérieures de 23 °C à la température ambiante. Des failles régionales peuvent permettre ces écoulements vers le haut. Lorsque l'on ignore la drainance verticale, on introduit une incertitude sur l'estimation de l'emmagasinement à partir des calculs du bilan régional de la nappe. Sur la base de l'équation du bilan de la nappe, une valeur de S=0,19 semble représenter les conditions captives de la partie développée de l'aquifère ce résultat est plus élevé, de plusieurs ordres de grandeur, que celui que l'on peut raisonnablement attendre des conditions géologiques. Ces résultats sont utiles pour évaluer si une ressource en eau souterraine est "surexploitée". Ces conclusions sont intéressantes lorsque l'on applique des modèles d'écoulement transitoire dans lesquels on ne prend pas en compte la drainance verticale d'une eau plus légère remontant. Resumen. En este trabajo, se investigan las entradas y salidas de flujo horizontal en la ecuación de balance de agua subterránea, así como el papel que desempeñan en el flujo entre cuencas. Se analizan dos ejemplos de México, uno en la Península de Baja California y otro en la parte central del país. En ambos, destaca la influencia del flujo entre cuencas, ya que se estima que una parte importante (aproximadamente el 70%) del agua termal extraída procede de una cuenca superficial externa. Se concluye que el método basado en cálculos de balance de agua subterránea no es satisfactorio para determinar algunos parámetros, como, por ejemplo, el

  14. METABOLIC SYNDROME AND ITS COMPONENTS IN SPANISH POSTMENOPAUSAL WOMEN.

    PubMed

    Orgaz Gallego, María Pilar; Bermejo López, Pablo; Tricio Armero, Miguel Angel; Abellán Alemán, José; Solera Albero, Juan; Tárraga López, Pedro Juan

    2015-08-01

    Objetivo: los objetivos de este estudio fueron estimar la prevalencia del síndrome metabólico y cada uno de sus componentes en mujeres menopáusicas mayores de 45 años de la provincia de Cuenca (España), con el fin de conocer su riesgo cardiovascular y el control metabólico de los principales factores de riesgo. Método: estudio observacional, transversal con selección aleatoria de 716 mujeres entre 3.108 menopáusicas mayores de 45 años. El síndrome metabólico se identificó de acuerdo con la definición del NCEP-ATP III. El riesgo cardiovascular se calculó con la tabla SCORE en las menores de 65 años y se utilizaron los estándares de la American Diabetes Association “ADA” para estimar el control metabólico. El análisis estadístico se realizó con el programa SPSS.19. Resultados: la prevalencia del síndrome metabólico fue del 61,7% (IC95% 56,9-66,4). La prevalencia de cada componente fue: hipertensión arterial: 95,8% (IC95% 95,7-95,8), obesidad abdominal: 91% (IC95% 90,9-91,0), niveles bajos de HDLc: 70% (IC95% 69,8-69,9), hipertrigliceridemia: 56,9% (IC95% 56,4-56,9), hiperglucemia: 54,3% (IC95% 54,2-54,3). El riesgo cardiovascular fue moderado hasta los 65 años y alto en la mayoría de las mujeres que superaban esa edad. El control metabólico fue muy bueno para la glucemia, malo para la presión arterial sistólica y peor para los niveles de lípidos. El mal control de la presión sanguínea se asoció a ser mayor de 65 años, hipertensa y recibir terapia antidiabética, mejorando cuando la limitación física para actividades moderadas y la ansiedad aumentaban. Conclusiones: la prevalencia de síndrome metabólico en mujeres postmenopáusicas de la provincia de Cuenca es la más alta de España. La hipertensión y la obesidad abdominal son los componentes más frecuentes. El riesgo cardiovascular es moderado–alto en la postmenopausia; sin embargo, el control de la hipertensión arterial sistólica y del perfil lipídico es

  15. Historical flood data series of Eastern Spanish Coast (14th-20th centuries). Improving identification of climatic patterns and human factors of flood events from primary documentary sources

    NASA Astrophysics Data System (ADS)

    Alberola, Armando; Barriendos, Mariano; Gil-Guirado, Salvador; Pérez-Morales, Alfredo; Balasch, Carles; Castelltort, Xavier; Mazón, Jordi; Pino, David; Lluís Ruiz-Bellet, Josep; Tuset, Jordi

    2016-04-01

    major flood events on Eastern coast of Iberian Peninsula, with identification and evaluation of natural and human factors involved on that. References: Alberola, A. 2006. "Entre la sequía y la inundación. Una aproximación a las avenidas históricas de los ríos valencianos durante el siglo XVIII", in Gérard Chastagnaret and Antonio Gil Olcina (eds.), Riesgo de inundaciones en el Mediterráneo occidental, Casa de Velázquez-Universidad de Alicante, p. 1-30. ISBN 84-95555-89-1. Barriendos, M., Ruiz-Bellet, J.L., Tuset, J., Mazón, J., Balasch, C., Pino, D., Ayala, J.L.: 2014, "The 'Prediflood' database of historical floods in Catalonia (NE Iberian Peninsula) AD 1035-2013, and its potential applications in flood analysis", Hydrology and Earth System Sciences, 18: 1-17. DOI: 10.5194/hess-18-1-2014. Gil-Guirado, S.: 2013. Reconstrucción climática histórica y análisis evolutivo de la vulnerabilidad y adaptación a las sequías e inundaciones en la Cuenca del Segura (España) y en la Cuenca del Río Mendoza (Argentina). Doctoral dissertation. Universidad de Murcia, Murcia, España.

  16. Characterisation of the hydrogeology of the Augustus River catchment, Western Australia

    NASA Astrophysics Data System (ADS)

    Wilkes, Shane M.; Clement, T. Prabhakar; Otto, Claus J.

    acuíferos en rocas fracturadas dentro de la roca fresca. Los registros geofísicos aéreos y datos de las perforaciones han identificado un gran número de diques de dolerita que intersectan el emplazamiento. Se ha hallado venas de cuarzo fracturado a lo largo de los márgenes de los diques de dolerita. Medidas detalladas del nivel piezométrico y estimaciones de la eficiencia barométrica indican que los diques de dolerita y las venas de cuarzo fracturado afectan las direcciones del flujo de las aguas subterráneas, originando una fuerte conexión hidráulica entre todos los acuíferos e influenciando también a los mecanismos de recarga. Se ha establecido la importancia hidrogeológica de los diques de dolerita y de las venas de cuarzo fracturado mediante una combinación de medidas muy frecuentes del nivel piezométrico (cada 30 min), de la precipitación (cada 5 min) y de las fluctuaciones de la presión barométrica (cada 30 min). Se ha desarrollado un modelo conceptual para describir varias características hidrogeológicas del área de estudio. El modelo indica que las venas de cuarzo fracturado en los márgenes de los diques de dolerita constituyen un componente importante de la hidrogeología de cuencas con rocas meteorizadas.

  17. Una Nueva IDEA: Una Guia para Padres acerca de los Cambios en la Ley de Educacion Especial para Ninos con Incapacidades (A New IDEA: A Parent's Guide to the Changes in Social Education Law for Children with Disabilities).

    ERIC Educational Resources Information Center

    Seltzer, Tammy

    This guide for parents, in Spanish, explains the changes in the federal special education law resulting from the 1997 amendments to the Individuals with Disabilities Education Act (IDEA). Changes related to the parent's role in decisions about the child's education and in how schools can discipline special education students are highlighted. A…

  18. Por Que Mami No Puede Cambiar una Goma? Tercer Modulo de una Serie para Maestros de Escuela Elemental. (Why Can't Mommy Change a Flat Tire? Third Module of a Series for Elementary School Teachers).

    ERIC Educational Resources Information Center

    Molina, Carmen Eneida, Ed.; And Others

    This guide for teachers, in English and Spanish, examines the role parents play in the socialization of sex roles. A pre-test and post test are included to measure the user's awareness of sexual stereotyping. Five object lessons cover the following topics: (1) stereotypes which exist prior to a baby's birth; (2) behavioral standards on which…

  19. Una Escoba para Ana, Cien Oficios para Juan. Quinto Modulo de una Serie para Maestros de Escuela Elemental. (A Broom for Anna, A Hundred Jobs for John. Fifth Module of a Series for Elementary School Teachers).

    ERIC Educational Resources Information Center

    Molina, Carmen Eneida, Ed.; And Others

    This guide for teachers, in English and Spanish, examines the stereotyped work roles assigned to men and women. The guide examines educational materials that perpetuate these roles and presents teaching alternatives which reinforce students' self esteem and confidence. A pre-test and post-test are included to measure the user's awareness of…

  20. Incidental Vocabulary Learning in Second Language Acquisition: A Literature Review (Aprendizaje incidental de vocabulario en la adquisición de una segunda lengua: una revisión de literatura)

    ERIC Educational Resources Information Center

    Restrepo Ramos, Falcon Dario

    2015-01-01

    This literature review aims to analyze previous studies that address the incidental learning of vocabulary in second language acquisition. The articles included in this literature review look into the understanding of vocabulary learning through incidental means, the relationship of reading and incidental vocabulary learning, and the strategies…

  1. La Migracion Como Una Transicion Critica para la Persona en Su Ambiente. Una Interpretacion Organismico Evolutiva. (Migration as a Critical Person-in-Environment Transition: An Organismic-Developmental Interpretation.)

    ERIC Educational Resources Information Center

    Pacheco, Angel M.; And Others

    In order to explore some of the changes and stresses connected with migration and return migration, a study was conducted among migrants returning from the United States mainland to Puerto Rico. The sample consisted of 75 adolescents participating in a Bilingual Education program in Puerto Rico. Data were collected using Psychological Distance…

  2. Peer Interaction: A Social Perspective towards the Development of Foreign Language Learning (Interacción entre pares: una perspectiva social hacia el desarrollo del aprendizaje en una lengua extranjera)

    ERIC Educational Resources Information Center

    Gómez Lobatón, July Carolina

    2011-01-01

    This pedagogical innovation aims at discovering new ways of interaction that go beyond the unidirectional relationship that is presented in the classrooms most of the times. The innovation considers peers to be active agents in the construction of knowledge and proposes new ways to arrange groups in the classroom so that the arrangement can…

  3. Una novedosa herramienta estadística para desentrañar las características intrínsecas de una distribución de datos astrofísicos

    NASA Astrophysics Data System (ADS)

    Ferrero, I.; Piatti, A. E.

    The statistical analysis of a sample of data includes the collection; the analysis and the interpretation of them. For example; the construction of histograms has proven to be a powerful tool in statistics; from which it is possible to obtain an overview of the distribution of the data sample considered. In some circumstances; however; the results often depend on the way they are constructed (e.g. size of the bins used; etc.) leading to a variety of possible interpretations. Specifically; this paper presents a statistical method that allows to unravel the intrinsic distribution of a n-dimensional data distribution from "adaptive bins" and the consideration of the errors of the data used. FULL TEXT IN SPANISH

  4. Estudios de medicina de precisión para cáncer: empieza una nueva era

    Cancer.gov

    Avances en genómica, en exploraciones con imágenes, bioinformática y disciplinas relacionadas nos permiten diseñar estudios más pequeños, más rápidos y más inteligentes que incorporan los principios esenciales de la medicina de precisión.

  5. Azimut e altezza della Piramide Cestia in una sola osservazione del Sole e dell'ombra proiettata

    NASA Astrophysics Data System (ADS)

    Sigismondi, Costantino

    2016-07-01

    The astronomical azimut and heigth of the Cestia Pyramid in Rome have been measured as 205° and 36 m by observing the alignment of the Sun with the axis and the grazing shadow of the Pyramid on July 22nd.

  6. GS118+0144: una supercáscara de H I con contrapartida en el IR medio y lejano

    NASA Astrophysics Data System (ADS)

    Suad, L. A.; Cichowolski, S.; Noriega-Crespo, A.; Arnal, E. M.; Testori, J. C.; Flagey, N.

    2016-08-01

    GS118+0144 is a supershell detected in the neutral hydrogen (H i) emission distribution, centred at ()=(117.7, 1.4) with a systemic velocity of kms, an effective radius of pc, and it is located at a distance of kpc from the Sun. The total gaseous mass associated with the supershell is M, and its kinetic energy is erg. Using mid- and far-infrared data a good morphological coincidence with the H i structure was detected indicating that the dust components coexist with the gas. Carrying out infrared fluxes measurements at different far-infrared bands the dust associated with this structure could be characterized and it was concluded that cool temperatures dominate the area of the supershell.

  7. Desarrollo de una intervención grupal para la prevención del VIH en parejas heterosexuales1

    PubMed Central

    Pérez-Jiménez, David; Escabí Montalvo, Aracelis; del Carmen Cabrera Aponte, María

    2012-01-01

    HIV preventive efforts with heterosexual couples are almost nonexistent. We designed a group intervention based on the Information-Motivation-Behavioral Skills model with the aim of increasing male condom use and promoting the practice of mutual masturbation as a safer sex alternative. We carried out a pilot study with four couples to evaluate the feasibility of the intervention and the aspects of content and format that needed to be modified. Findings reflect that participants were very satisfied with the intervention and they found it entertaining and innovative. They were very comfortable with its format, as well as with the activities. The findings confirm the feasibility of this intervention and the need to direct preventive efforts to this population. PMID:23847716

  8. Una formalizacion tentativa del problema de la barrera linguistica (A Tentative Formalization of the Problem of Linguistic Barriers).

    ERIC Educational Resources Information Center

    Zierer, Ernesto

    1971-01-01

    The formulas presented in this paper provide the means for showing the ease with which scientific information can be passed from one language into another. The formulas are based on several factors. The linguistic barrier can be measured to illustrate the relative degree of difference between two languages based on a comparison of vocabulary,…

  9. Compartiendo la Ciencia con los Ninos: Una Guia para los Padres (Sharing Science with Children: A Guide for Parents).

    ERIC Educational Resources Information Center

    North Carolina Museum of Life and Science, Durham.

    This guide offers Spanish-speaking parents ways in which they can help their children learn about science at home and in the community. Science is a way of looking at the world. It uses everyday techniques such as observation and classification to give us information about things and how they work. Advice to parents that want to support their…

  10. Schoolwide Programs: Parents' Guide & Capacity-Building Materials = Programas Schoolwide: Una Guia para Padres y Materias de Capacitacion.

    ERIC Educational Resources Information Center

    WestEd, San Francisco, CA.

    The reauthorization of Title I (Improving America's Schools Act--IASA) made the Schoolwide Program (Schoolwide) a major strategy for schools with high poverty rates and stressed the importance of parent involvement. This guide was developed to provide professional development and parent education on Schoolwide implementation in California. The…

  11. Una Guia de Consejos Practicos Sobre la Lectura para los Padres (A Guide to Reading Tips for Parents).

    ERIC Educational Resources Information Center

    Department of Education, Washington, DC.

    The No Child Left Behind program changes the federal role in education by asking America's schools to describe their success in terms of what each student accomplishes. The information in this reading guide, presented in Spanish, was developed by the United States Department of Education to assist parents, caregivers, and teachers in understanding…

  12. Una Crisis para la Educacion Bilingue en Nuevo Mexico. (A Crisis for Bilingual Education in New Mexico)

    ERIC Educational Resources Information Center

    Benavides, Ezequiel

    1976-01-01

    Written in Spanish and English, this article briefly reviews the bilingual picture in New Mexico. If New Mexico is to succeed in attracting Federal monies for bilingual education, it must strive for unity in its efforts and objectives. (NQ)

  13. Una vision holistica de la educacion superior en contextos posmodernos (The Integrative Conception of Postmodern Higher Education).

    ERIC Educational Resources Information Center

    Zoreda, Margaret Lee; Zoreda-Lozano, Juan Jose

    This paper argues that current "postmodern" conditions demand a rethinking of higher education, especially in countries like Mexico. This would involve the rapprochement of science, technology, and the humanities, based on the belief that the chasm separating them, apart from being artificial, is no longer socially viable. Through a critical…

  14. Intensive Behavioral Intervention for School-Aged Children with Autism: Una Breccia nel Muro (UBM)--A Comprehensive Behavioral Model

    ERIC Educational Resources Information Center

    Fava, Leonardo; Vicari, Stefano; Valeri, Giovanni; D'Elia, Lidia; Arima, Serena; Strauss, Kristin

    2012-01-01

    Although, reviews and outcome research supports empirical evidence for Early Intensive Behavior Intervention in pre-scholars, intensive behavioral service provision for school-aged children with autism spectrum disorders (ASD) are less subject to research studies. In order to provide effective behavioral interventions for school-aged children it…

  15. Books in Spanish for Children and Young Adults: An Annotated Guide (Libros Infantiles y Juveniles en Espanol: Una Guia Anotada).

    ERIC Educational Resources Information Center

    Schon, Isabel

    Intended to aid teachers, librarians, and others in the selection of Spanish-language books for children in grades K-12, the annotated guide includes books by Hispanic authors which highlight the lifestyle, folklore, heroes, history, fiction, poetry, theatre, and classical literature of Hispanic cultures. Most books included in the guide have been…

  16. Puentes hacia una mejor vida (Bridges to a Better Life): Outcome of a Diabetes Control Peer Support Intervention

    PubMed Central

    Ayala, Guadalupe X.; Ibarra, Leticia; Cherrington, Andrea L.; Parada, Humberto; Horton, Lucy; Ji, Ming; Elder, John P.

    2015-01-01

    PURPOSE Peer support can promote diabetes control, yet research on feasible and effective peer support models is lacking. This randomized controlled trial tested a volunteer-based model of peer support for diabetes control. METHODS Thirty-four volunteer peer leaders were recruited and trained to provide support to 5 to 8 patients each through telephone contact, in-person, individual, and group support. Planned dose was 8 contacts, preferably in the first 6 months. Patients with uncontrolled diabetes were randomly sampled from the medical records of 3 community clinics. After a baseline interview and medical records review to obtain baseline values for the primary outcome, HbA1c, 336 patient participants were randomly assigned to a 12-month peer support intervention or usual care. The assessment protocol was repeated at 6 and 12 months after baseline. RESULTS Thirty peer leaders delivered an average of 4 contacts each per assigned participant (range 1–24). Despite the lack of intervention fidelity, the intervention was effective at reducing glycated hemoglobin (HbA1c) among intervention as compared with usual care participants (P=0.05). Similar trends were observed in frequency of meeting fruit and vegetable guidelines (P =0.09), a secondary outcome. Counterintuitively, usual care participants reported checking their feet more days out of 7 than intervention participants (P =0.03). CONCLUSIONS Given the modest changes we observed, combined with other evidence for peer support to promote diabetes control, additional research is needed on how to modify the system of care to increase the level of peer support delivered by volunteers. PMID:26304977

  17. INTRODUCCION A UNA COMPARACION FONOLOGICA DEL ESPANOL Y DEL INGLES. (INTRODUCTION TO A PHONOLOGICAL COMPARISON OF SPANISH AND ENGLISH).

    ERIC Educational Resources Information Center

    CARDENAS, DANIEL N.

    A PHONOLOGICAL COMPARISON WAS MADE BETWEEN ENGLISH AND SPANISH. THE PRINCIPAL REFERENCE USED FOR ENGLISH ANALYSIS WAS "AN OUTLINE OF ENGLISH STRUCTURE" BY TRAGER AND SMITH. THE PRINCIPAL REFERENCE USED FOR SPANISH ANALYSIS WAS "SPANISH JUNCTURE AND INTONATION" BY STOCKWELL, BOWEN, AND SILVA-FUENZALIDA. THE PRONUNCIATION PROBLEMS COMMON TO A…

  18. Una Nacion En Peligro: La Necesidad Imperiosa de Reformar La Ensenanza. (A Nation at Risk: The Imperative for Educational Reform).

    ERIC Educational Resources Information Center

    National Commission on Excellence in Education (ED), Washington, DC.

    This report: (1) investigates the declining state of the educational system in America, as measured by high school student performance in the United States and other countries; (2) identifies specific problem areas; and (3) offers multiple recommendations for improvement. The five major recommendations arrived at appear, respectively, under the…

  19. La trama celeste: por qué educar en astronomía. Una oportunidad de aprendizajes múltiples

    NASA Astrophysics Data System (ADS)

    García, B.

    2016-08-01

    Astronomy education at all levels has been an issue addressed by the International Astronomical Union as part of its 2010--2020 plan. The content on astronomical topics are in the curriculum at primary and secondary levels worldwide. Being a cross-discipline, astronomy is also a science that allows to introduce students to the study of the nature in a non-confrontational way: no one is indifferent to their concepts and discoveries. The International Astronomical Union, through its Commission on Education and Development of Astronomy, has implemented, sponsored and carried out over the past five years two special programs, one about didactics of astronomy for teachers of middle level and another one for the transmission of astronomical topics for the disabled. In this presentation, achievements and impact of these programs are shared.

  20. Poblaciones estelares en una región de Carina: detección de estrellas masivas altamente enrojecidas

    NASA Astrophysics Data System (ADS)

    Molina-Lera, J. A.; Gamen, R.; Baume, G. L.; Carraro, G.; Costa, E.

    2016-08-01

    In this work, preliminary results corresponding to a region of the Galaxy close to the direction of the Carina arm are presented. The study was based on deep homogeneous photometric data ( ), obtained in the Inter-American Observatory Cerro Tololo. Data was complemented with 2MASS catalog infrared data, spectral classification of literature and own spectroscopic observations using Gemini. From our photometric analysis of the stars in the area, we could identify three stellar populations. Two of them are linked with young open clusters and the third one is characterized by a consistent set of objects with highly reddened early stars. The spectral types determined, for a sample of these stars, allowed us to confirm this hypothesis, since in all cases they were identified as massive OB type stars.

  1. La Formacion Docente y la Educacion Primaria en Una Propuesta de Cambio (Teacher Training on Education: A Proposal for Change).

    ERIC Educational Resources Information Center

    Fernandez, Enrique Alonso, Ed.

    In order to raise the quality of teaching and teacher education in Uruguay, a program of innovation and change was considered at a 1986 educational conference. Conference goals included identifying ways to: (1) increase opportunities to promote innovation and change; (2) search for strategies to encourage creative problem solving; (3) increase…

  2. Linguistica applicata e glottodidattica: Una collana per insegnanti (Applied Linguistics and Language Teaching: A Series for Teachers).

    ERIC Educational Resources Information Center

    Salvi, Rita

    1988-01-01

    A series on language teaching and learning for teachers includes books on the following topics: (1) psycholinguistics (Titone); (2) the role of the brain in language acquisition (Danesi); (3) the creative language of children (Crema & De Robertis); and (4) suggestopedia (Lozanov & Gateva). (CFM)

  3. Our Treasures: A Celebration of Nebraska's Mexican Heritage = Nuestros Tesoros: Una celebracion de la herencia mexicana de Nebraska.

    ERIC Educational Resources Information Center

    Nebraska State Historical Society, Lincoln.

    This publication is intended as a resource guide for teachers, students, and librarians interested in Mexican American culture, and for groups wishing to conduct local community research using oral histories. The Mexican American Traditions in Nebraska project was designed to document and preserve the richness of Nebraska's Mexican culture. The…

  4. El Desarrollo Social de los Ninos: Una Lista de Cotejo. ERIC Digest. (Young Children's Social Development: A Checklist. ERIC Digest.)

    ERIC Educational Resources Information Center

    McClellan, Diane E.; Katz, Lilian G.

    The best childhood predictor of later adult adaptation is the adequacy with which a child gets along with other children. Because social development begins in the early years, it is appropriate that early childhood programs include regular formal and informal assessment of children's acquisition of social competence. This digest presents the…

  5. Distribución superficial de impactos en Iapetus originada por el remanente de una colisión

    NASA Astrophysics Data System (ADS)

    Zoppetti, F. A.; Leiva, A. M.; Briozzo, C. B.

    2015-08-01

    By means of Circular Restricted Three Body Problem Saturn--Iapetus, we analize potential impact distributions on the surface of Iapetus, originated from considering a low-energy population generated as remnants of a collisional event occurred in the past on the surface of this satellite. The results are analized in order to offer a new approach to explain the origin of the albedo dichotomy observed on Iapetus.

  6. Desarrollo de una intervención grupal para la prevención del VIH en parejas heterosexuales.

    PubMed

    Pérez-Jiménez, David; Escabí Montalvo, Aracelis; Del Carmen Cabrera Aponte, María

    2010-01-01

    HIV preventive efforts with heterosexual couples are almost nonexistent. We designed a group intervention based on the Information-Motivation-Behavioral Skills model with the aim of increasing male condom use and promoting the practice of mutual masturbation as a safer sex alternative. We carried out a pilot study with four couples to evaluate the feasibility of the intervention and the aspects of content and format that needed to be modified. Findings reflect that participants were very satisfied with the intervention and they found it entertaining and innovative. They were very comfortable with its format, as well as with the activities. The findings confirm the feasibility of this intervention and the need to direct preventive efforts to this population.

  7. Si Su Hijo cartamudea: Una Guia para los Padres (If Your Child Stutters: A Guide for Parents). Publication No. 15.

    ERIC Educational Resources Information Center

    Speech Foundation of America, Memphis, TN.

    This Spanish language booklet is written for parents who are concerned about the speech of their young child. The goal of the booklet is to enable parents to begin working with their child, and a speech clinician if necessary, with a better understanding of the problem. The booklet discusses common parental questions such as: (1) Does my child…

  8. Bienvenido a los Estados Unidos. Una Guia para Refugiados (Welcome to the United States. A Guide for Refugees). First Edition.

    ERIC Educational Resources Information Center

    Economic and Social Research Council, Edinburgh (Scotland). Centre for Educational Sociology.

    This guidebook provides Spanish-speaking refugees being resettled in the United States with general information about what they will encounter and the services they can receive in their first months in the country. This is the Spanish version, and is available in several other languages. The book is distributed to overseas processing agencies,…

  9. PREVENCIÓN DEL VIH/SIDA EN LOS CIRCUITOS DE LEVANTE HSH: UNA ASIGNATURA PENDIENTE1

    PubMed Central

    Barreda, Victoria; Carballo-Dieguez, Alex; Marone, Rubén; Balán, Iván; Pando, María Ángeles; Ávila, María Mercedes

    2011-01-01

    Resumen A partir de un relevamiento de tipo etnográfico, se describen lugares de encuentro de HSH en la Ciudad de Buenos Aires y sus prácticas sexuales. El reconocimiento de tales espacios, así como las características que asumen en ellos los encuentros sexuales entre los HSH, plantean obstáculos específicos en la adopción de comportamientos preventivos y, asimismo, generan nuevos desafíos para las actividades de prevención. Se plantean las dificultades y debates conceptuales que la misma categoría presenta, y sus consecuencias en el abordaje preventivo y teórico-metodológico para las ciencias sociales. Además, se proponen nuevos interrogantes acerca de los alcances y las limitaciones del modelo preventivo del VIH/Sida para HSH. PMID:21874154

  10. Una prueba empírica de generadores de nümeros pseudoaleatorios mediante un proceso de decaimiento exponencial

    NASA Astrophysics Data System (ADS)

    Coronel-Brizio, H. F.; Hernández-Montoya, A. R.; Jiménez-Montaño, M. A.; Mora-Forsbach, L. E.

    2007-10-01

    Empirical tests for pseudorandom number generators based on the use of processes or physical models have been successfuly used and are considered as complementary to theoretical test of randomness. In this work a statistical methodology for evaluating the quality of pseudorandom number generators is presented. The method is illustrated in the context of the so-called exponential decay process, using some pseudorandom number generators commonly used in physics.

  11. How To Start a Family Day Care = Como Iniciar una Guarderia en El Hogar. [Videotape and Viewer's Guide].

    ERIC Educational Resources Information Center

    Raphael, Doris; Weisman, Douglas

    Being a family day care provider is work that requires professional responsibilities and attention to the physical, emotional, and educational well-being of children; listening and responding to parents; and running a business. This videotape, in English- and Spanish-language versions, explores the elements involved in starting up a family day…

  12. Reconnaissance evaluation of Honduran geothermal sites. Una evaluacion por medio de reconocimiento de seis areas geotermicas en Honduras

    SciTech Connect

    Eppler, D.; Fakundiny, R.; Ritchie, A.

    1986-12-01

    Six geothermal spring sites were selected on the basis of preliminary investigations conducted in Honduras over the last decade and were evaluated in terms of their development potential. Of the six, the Platanares and San Ignacio sites have high base temperatures and high surface fluid discharge rates and appear to have the best potential for further development as sources of electrical power. A third site, Azacualpa, has a high enough base temperature and discharge rate to be considered as a back-up, but the logistical problems involved in geophysical surveys make it less attractive than the two primary sites. Of the remaining three sites, Pavana may be a source of direct-use heat for local agricultural processing. Sambo Creek and El Olivar have either severe logistical problems that would impede further investigation and development or base temperatures and flow rates that are too low to warrant detailed investigation at this time.

  13. Promoviendo una Alimentación Saludable (PAS) design and methods: engaging Latino families in eating disorder treatment.

    PubMed

    Reyes-Rodríguez, Mae Lynn; Bulik, Cynthia M; Hamer, Robert M; Baucom, Donald H

    2013-05-01

    The use of culturally sensitive intervention could improve mental health care for the eating disorder (ED) treatment in the Latino population. The aim of this report is to describe the rationale, design, and methods of the ongoing study entitled "Engaging Latino families in eating disorders treatment." The primary aim of the study is to compare (a) the combined effect of individual cognitive behavioral therapy for bulimia nervosa (CBT-BN) that has been previously adapted for the Latino population plus Family Enhanced (FE) modules, with (b) the standard adapted individual CBT-BN in a proof-of-principle study with 40 Latina adults with eating disorders and one relative or significant other per patient. We hypothesize that 1) the feasibility, acceptability, and adherence of participants in CBT-BN+FE will be superior to individual CBT-BN only; 2) relatives in CBT-BN+FE will report greater treatment satisfaction, greater reduction in family conflict, and greater decreases in caregiver burden than relatives in the individual CBT-BN only condition; and 3) patients who participate in CBT-BN+FE will show trends towards greater decreases in ED symptoms compared with patients in CBT-BN only; although power will be limited to detect this difference. However, we predict that they will show greater retention in treatment, greater treatment satisfaction, and greater decreases in family conflict than patients in CBT-BN only. The completion of this investigation will yield important information regarding the acceptability and feasibility of a culturally sensitive evidence-based treatment model for Latinos with eating disorders.

  14. La Traduccion Simultanea como Materia en Una Carrera de Lenguas (Simultaneous Translation as a Course in a Foreign Language Program)

    ERIC Educational Resources Information Center

    Bradley, D.

    1977-01-01

    A description of the foreign language curriculum at the university level in which courses in simultaneous translation are required. The size and composition of the groups are described as well as methods used to develop skill in translating and interpreting. Results are assessed. (Text is in Spanish.) (AMH)

  15. Hacia una adaptación cultural para el tratamiento de trastornos alimentarios en latinos en Estados Unidos

    PubMed Central

    Reyes-Rodríguez, Mae Lynn; Bulik, Cynthia M.

    2011-01-01

    Eating disorders affect all ethnic and socioeconomic groups. However, evidence based treatments for eating disorders have been developed and tested exclusively on Caucasian populations. With the purpose to develop a culturally sensitive framework for the eating disorders treatment in Latinos/as, the objectives of this work were: 1) identify and describe some of the relevant cultural elements for eating disorders in the Latino population and, 2) to draft a culturally sensitive intervention model for eating disorders in Latino population in the United States. Providing culturally sensitive treatments for Latinos with psychiatric disorders is essential to reverse public health disparities. PMID:22003472

  16. Educacion Ambiental en las Escuelas: Creando una Programa que Funcione! (Environmental Education in the Schools: Creating a Program That Works!).

    ERIC Educational Resources Information Center

    Braus, Judy A.; Wood, David

    This book is a manual that enables teachers to formulate an effective program of environmental education across multiple grade levels and cultural settings. A section provides tips for using the book, followed by nine chapters dealing with different aspects of developing and implementing an environmental education program. Chapter 1 presents a…

  17. Il volto della Luna da Plutarco a Newton. Storia di una teoria ellenistica della gravità

    NASA Astrophysics Data System (ADS)

    Cappi, Alberto

    2013-03-01

    In his dialogue "De Facie quae in Orbe Lunae apparet", Plutarch includes a discussion on a non-Aristotelian theory of gravity. I describe how this theory could be developed during the Hellenistic period and its influence on the cosmological debate along the centuries until the beginning of modern science. (Text in Italian)

  18. Personal Safety for Children: A Guide for Parents = Una guia para los padres sobre la seguridad personal de los ninos.

    ERIC Educational Resources Information Center

    Department of Justice, Washington, DC.

    Noting that parents and teachers have the responsibility of safeguarding children and teaching them the skills they need to be safe, this pamphlet, in Spanish and English versions, is designed to help parents talk to their children about how to protect themselves against abduction and exploitation. The pamphlet is organized into six sections.…

  19. Groundwater demand management at local scale in rural areas of India: a strategy to ensure water well sustainability based on aquifer diffusivity and community participation

    NASA Astrophysics Data System (ADS)

    Kulkarni, Himanshu; Vijay Shankar, P. S.; Deolankar, S. B.; Shah, Mihir

    Watershed development programmes provide an opportunity for sustainable management strategies, although currently, they remain largely `supply-side' mechanisms of water resources development. Hydrogeological conditions, community participation and status of groundwater usage are important in evolving strategies on `demand-side' groundwater management. Neemkheda aquifer is a typical low-storage, low-hydraulic conductivity aquifer from a watershed in the dryland regions of Madhya Pradesh State of central India. A shallow unconfined aquifer, it consists of an upper coarse, calcareous sandstone unit underlain by a fine-grained sandstone unit. A `well commune' of seven wells is poised to test the concept of joint groundwater management, wherein wells are mechanisms of tapping a common water source, the Neemkheda aquifer. The strategy for systematic groundwater management in the Neemkheda well commune is based upon the relationship between Transmissivity (T) and Storage coefficient (S), i.e. aquifer diffusivity, and its variation within the aquifer. Wells within a high diffusivity domain tend to dewater more quickly than wells within a low diffusivity domain. A well-use schedule during the dry season, based upon aquifer diffusivity forms the basis of the groundwater management concept. The distribution of local aquifer diffusivities governs the relationship between local and regional aquifer depletion times and forms the basis of the groundwater management exercise being proposed for the Neemkheda aquifer. Los programas de desarrollo de una cuenca hídrica son una oportunidad para el uso de estrategias de gestión sostenible, aunque hoy en día estas siguen siendo principalmente mecanismos para el desarrollo de recursos hídricos con énfasis en la ``oferta''. Las condiciones hidrogeológicas, la participación comunitaria y la condición de utilización del agua subterránea, son importantes en el desarrollo de estrategias para la gestión del agua subterránea, desde

  20. Coordination of Teachers in New Undergraduate Degrees Adapted to European Higher Education Area

    ERIC Educational Resources Information Center

    Mondéjar-Jiménez, Juan-Antonio; Cordente-Rodríguez, María; Meseguer-Santamaría, María-Leticia; Vargas-Vargas, Manuel; Mondéjar-Jiménez, José

    2010-01-01

    The introduction of new undergraduate degrees adapted to the European Higher Education Area (EHEA) requires a coordinated effort by teachers, because the different subjects are based on a new methodology of teaching and learning. The Social Sciences School of Cuenca offers degrees in Business Administration, Law and Labor Sciences. The progressive…

  1. University Practice as a Key Factor in Increasing the Sensitivity to Educational Inclusion

    ERIC Educational Resources Information Center

    De Luna Velasco, Laura E.; Hernández Fernández, Antonio; Ferrándiz Vindel, Isabel María

    2012-01-01

    The present article is based on research carried out in three universities, the University Center South (Cusur, Mexico), Jaen and Cuenca (Spain) on the influence of university practice in the development of sensitivity towards inclusive education in our students the first years of the Diploma in Education, using the subject "pedagogical basis…

  2. Distribution of stable isotopes in arid storms . I. Relation between the distribution of isotopic composition in rainfall and in the consequent runoff

    NASA Astrophysics Data System (ADS)

    Adar, E. M.; Dody, A.; Geyh, M. A.; Yair, A.; Yakirevich, A.; Issar, A. S.

    des précipitations et du ruissellement associé ont étéétudiées dans un petit bassin rocheux aride en Israël. Des préleveurs spécialement adaptés pour la pluie et le ruissellement ont fourni des échantillons séquentiels dans des sacs en PVC haute densité hermétiquement fermés. Au cours de plusieurs épisodes pluvieux où le ruissellement était isotopiquement appauvri par rapport à la pluie, la différence ne pouvait pas être expliquée par des effets de fractionnement intervenant au cours de l'écoulement en surface. Un bilan hydrologique rapportant l'écoulement de surface à la pluie sur un bassin versant rocheux montre que l'écoulement dans sa totalité est alimenté par une très petite partie (1-2mm) de l'averse. C'est pourquoi l'objectif essentiel a été de rechercher des relations quantitatives entre des parties de la pluie (averses et épisodes pluvieux) et le ruissellement. La répartition temporelle de la composition en isotopes stables (oxygène et hydrogène) a été utilisée pour quantifier la corrélation entre la hauteur tombée pendant l'épisode pluvieux et le ruissellement produit. Le but de ce travail était (a) d'utiliser les variations dynamiques de la composition isotopique dans la pluie et dans le ruissellement pour modéliser l'ordre de grandeur de la capacité de stockage de surface associée aux processus de ruissellement de l'écoulement de surface, et (a) de caractériser la composition isotopique de l'eau d'infiltration par rapport à la variation isotopique observée dans les pluies et dans les écoulements correspondants. Resumen La distribución temporal de la composición isotópica de las tormentas en zonas áridas y la correspondiente escorrentía se analizó en una pequeña cuenca rocosa en Israel. Los medidores de lluvia y escorrentía proporcionaron muestras de agua secuenciales, selladas herméticamente en bolsas de PVC de alta densidad. En muchas tormentas en las que la escorrentía tenía una composici

  3. Distribution of stable isotopes in arid storms . II. A double-component model of kinematic wave flow and transport

    NASA Astrophysics Data System (ADS)

    Yakirevich, Alexander; Dody, Avraham; Adar, Eilon M.; Borisov, Viacheslav; Geyh, Mebus

    édible par rapport aux observations a été obtenu après un ajustement des paramètres par une méthode d'essais et d'erreurs. L'analyse de sensibilité et l'application du modèle ont ensuite été réalisés. Le modèle est plutôt sensible aux changements des paramètres caractérisant les zones de stockage dans les dépressions. Le modèle rend compte de l'effet de mémoire isotopique dans l'eau dans le stockage des dépressions entre les événements séquentiels de pluie. L'utilisation d'un modèle à double composante d'écoulement et de transport par onde cinématique permet un ajustement qualitatif et quantitatif adapté entre les distributions des δ18O calculées et observées dans l'écoulement de surface. Resumen Un nuevo método matemático basado en un modelo de doble componente de onda cinemática de flujo y transporte permite caracterizar la distribución isotópica dinámica de las tormentas en zonas áridas y la escorrentía. Este modelo describe el transporte y la evolución del δ18O en la lluvia, flujo superficial y escorrentía en una cuenca rocosa de clima árido con detención superficial distribuida uniformemente. El modelo se calibró numéricamente utilizando un conjunto de datos de descarga temporal y de distribución de δ18O para lluvia y escorrentía recogida en una pequeña cuenca rocosa en el Centro de Experimentación de Sede Boker, Israel. Se obtuvo un buen ajuste a los datos tras un ajuste de parámetros mediante prueba y error. Se realizó un análisis de sensibilidad que indicó que el modelo resulta ser bastante sensible a cambios en los parámetros que caracterizan las zonas de baja detención superficial. El modelo también refleja el efecto de la memoria isotópica en el agua de estas zonas de detención entre los distintos periodos de lluvias. El uso de un modelo de doble componente de onda cinemática de flujo y transporte proporciona un buen ajuste cualitativo y cuantitativo entre los datos medidos y calculados de δ18O en la

  4. Eco-environmental problems and effective utilization of water resources in the Kashi Plain, western Terim Basin, China

    NASA Astrophysics Data System (ADS)

    Lin, Nian-Feng; Tang, Jie; Han, Feng-Xiang

    2001-02-01

    Since ancient times, water resources, mainly from melting snow in the high mountains, have nourished a large area of an oasis in the Kashi Plain in the western Terim Basin, China. In the last half-century, however, the rapid growth of population and the overexploitation of water, soil, and biological resources have led to drought, salinization, and desertification in the area, and consequently have hindered the development of sustainable agriculture. In this study, groundwater reservoirs with sustainable water supplies equivalent to 44.65×108 m3/year were identified, which has made it possible to implement several projects in the area to improve the ecological and agricultural environment. Three strategies are proposed for the integrated development and management of both surface-water and groundwater resources in the area. Résumé. Depuis des temps anciens, les ressources en eaux, provenant surtout de la fonte des neiges en montagne, ont alimenté une large part d'une oasis de la plaine de Kashi, dans le bassin occidental de Terim (Chine). Au cours des derniers cinquante ans, toutefois, l'accroissement rapide de la population et la surexploitation de l'eau, des sols et des ressources biologiques ont provoqué la sécheresse, la salinisation et la désertification de la région cela a eu pour conséquence d'entraver le développement d'une agriculture durable. Cette étude identifie les réserves en eau souterraine, susceptibles de fournir durablement 44,65×108 m3/an, ce qui a permis de réaliser plusieurs projets dans cette région pour améliorer l'environnement écologique et agricole. Trois stratégies sont proposées pour le développement intégré et la gestion simultanée des ressources en eau de surface et en eau souterraine de cette région. Resumen. Los recursos hídricos, procedentes fundamentalmente del deshielo en alta montaña, han nutrido desde tiempo inmemorial una gran área de un oasis situado en las llanuras de Kashi, en la cuenca occidental

  5. Previniendo el Uso de Drogas entre Ninos y Adolescentes: Una Guia Basada en Investigaciones (Preventing Drug Use among Children and Adolescents: A Research-Based Guide).

    ERIC Educational Resources Information Center

    Sloboda, Zili; David, Susan L.

    This question and answer guide provides an overview of the research on the origins and pathways of drug abuse, the basic principles derived from effective drug abuse prevention research, and the application of research results to the prevention of drug use among young people. The basic principles derived from drug abuse prevention research are…

  6. Building Your Baby's Brain: A Parent's Guide to the First Five Years = Como estimular el cerebro infantil: Una guia para padres de familia.

    ERIC Educational Resources Information Center

    Dodge, Diane Trister; Heroman, Cate

    Noting that all parents can help their baby's brain to grow, this guide, in English- and Spanish-language versions, explores what science has learned about infant brain development and how parents and caregivers can influence cognitive development. Topics covered include: prenatal care, touching your baby, teaching about feelings and self-control,…

  7. Realidades Suburbanas: Latinos en el Condado de Dakota. Una Investigacion Dirigida por HACER = Suburban Realities: Latinos in Dakota County. A Study Conducted by HACER.

    ERIC Educational Resources Information Center

    HACER: Hispanic Advocacy and Community Empowerment through Research, Minneapolis, MN.

    A research project was conducted between April and December of 1998 to learn about the experiences of the sizable numbers of Latinos who live in Dakota County (Minnesota). This diverse group was studied through examining existing demographic information, conducting interviews with 45 Latino and Anglo individuals, and conducting several focus…

  8. Aunque cerca...sano: Una guia para prevencion de los riesgos de los pesticidas (Although Nearby...Healthy: A Guide for the Prevention of Pesticide Risks).

    ERIC Educational Resources Information Center

    Saenz, Salvador

    Intended for Spanish-speaking farmworkers with children, this publication in comic book format tells these parents how they can protect their children from pesticide risks. On returning home from work, one farmworker couple does not hug their young children. When their behavior is questioned by neighbors, the mother explains that the fields were…

  9. Un nuevo fármaco puede ser una opción de tratamiento para algunos cánceres de mama

    Cancer.gov

    Los resultados de un estudio clínico internacional permiten suponer que, en poco tiempo, habrá otra opción de tratamiento para las mujeres con cáncer de mama metastásico HER2 positivo que deja de responder a los tratamientos dirigidos con trastuzumab.

  10. The Jobs Challenge: Pressures and Possibilities. A Report of the Jobs Panel of the Economic Policy Council of UNA-USA.

    ERIC Educational Resources Information Center

    United Nations Association of the United States of America, New York, NY.

    Technological, demographic, and competitive pressures have transformed the U.S. labor market and must be dealt with on a priority basis. The urgency of the problem can best be addressed by creating a national institution that is independent of government, business, and labor but that draws on all three sectors to develop a broad array of policies…

  11. Contribucion de la Fonetica y la Fonologia a la Ensenanza de una Segunda Lengua (Phonetic and Phonological Contributions to Teaching a Second Language)

    ERIC Educational Resources Information Center

    Cardenas, M. Cristina

    1977-01-01

    The historical changes in the teaching methods of modern languages are discussed, with emphasis on the modern principle that language, before anything, is a means of oral communication. (Text is in Spanish.) (NCR)

  12. Hacia Una Pedagogia de Solucion de Problemas en La Educacion Ambiental. Serie Educacion Ambiental 15 (Pedagogy of Solutions and Problems in Environmental Education. Environmental Education Series 15.

    ERIC Educational Resources Information Center

    United Nations Educational, Scientific, and Cultural Organization, Santiago (Chile). Regional Office for Education in Latin America and the Caribbean.

    This document discusses the teaching of problem solving in environmental education. From an interdisciplinary viewpoint, this study describes some strategies for teaching that can favor the practice of educational activities oriented toward solving the concrete problems of the surrounding environment. The volume is divided into seven chapters. The…

  13. Teaching Social Studies in an Age of Globalization: A Case Study of Secondary Social Studies Teachers' Participation in the UNA-USA's Global Classrooms Curriculum Program

    ERIC Educational Resources Information Center

    Miliziano, Kelly R.

    2009-01-01

    The researcher found few studies that explore decisions of social studies teachers as they plan what and how to teach their classes. Over a century, social studies educators have adapted and responded to political, social, and economic changes. From educating immigrants a century earlier to addressing contemporary cross-border issues, social…

  14. Factores predictores de inicio y cesación de tabaquismo en una cohorte de mujeres chilenas con 5,5 años de seguimiento

    PubMed Central

    Puschel, Klaus; Thompson, Beti; Olcay, Fabiola; Frreccio, Catterina

    2014-01-01

    Background Chilean women have one of the highest smoking prevalence in the world. Aim To estimate the main factors associated with smoking initiation and quitting among a cohort of adult women living in a low socioeconomic status area of Santiago, Chile. Material and methods A random population-based sample of 1,100 women, 18 years and older, were selected from a community located in the South East area of Santiago. Sociodemographic, as well as smoking, beliefs, behaviors, stages of change and nicotine addiction level were recorded during a personal interview. After an average follow-up period of 5.5 years, women were re-evaluated. Results Seventy-three percent of women completed the study. At baseline, 39% of women were smokers. At the end of the study, there was an absolute smoking rate reduction of 7.1% (p<0.001). The main variables associated with smoking initiation were younger age (Odds ratio (OR): 1.08, 95% confidence intervals (CI): 1.05–1.12), higher education level (OR: 1.2, 95% CI: 1.07–1.35), and having fewer children (OR: 1.3 95% CI: 1.01–1.66). Factors related with quitting were younger age of onset (OR: 1.06 95% CI: 1.02–1.1), higher level of nicotine dependence (OR: 4.22, 95% CI: 1.74–10.27), and higher perception of smoking addiction (OR: 4.34, 95% CI: 2–9.09). Stage of change was associated with smoking cessation but its effect was diluted after adjusting for the level of nicotine addiction. Conclusions Sociodemographic and family factors were the main variables related with initiation, whereas age of onset, belief of addiction, and nicotine dependence were the main factors related with cessation. Women with a high motivation for quitting should be evaluated for nicotine addiction level to define the best strategy for intervention (Rev Méd Chile 2009; 137: 1001–9). PMID:19915762

  15. Arrecifes de Coral: Una Coleccion de Actividades en Espanol para Estudiantes de Escuela Intermedia (Coral Reefs: A Spanish Compilation of Activities for Middle School Students).

    ERIC Educational Resources Information Center

    Walker, Sharon H.; Newton, R. Amanda; Ortiz, Alida

    This activity book for middle school students on coral reefs is divided into 10 sections. Section 1 is the introduction. Section 2 describes what coral reefs are while section 3 describes how coral reefs reproduce and grow. Section 4 describes where coral reefs are found, and section 5 describes life on a coral reef. Section 6 describes the…

  16. L'organizzazione di una lezione di traduzione basata sull'approccio dell'analisi testuale (The Organization of a Translation Lesson Based on a Textual Analysis Approach).

    ERIC Educational Resources Information Center

    Horrakh, Livio

    1988-01-01

    Describes a three-phase approach to teaching translation: (1) decoding the "macro" (beyond sentence level) and the "micro" (sentence or phrase level) elements of the passage; (2) coordinating the elements of the original language text with the target language text; and (3) producing the text in the target language. (CFM)

  17. Buenos Hábitos Alimenticios para Una Buena Salud: Evaluation of a Nutrition Education Program to Improve Heart Health and Brain Health in Latinas

    PubMed Central

    Otilingam, Poorni G.; Gatz, Margaret; Tello, Elizabeth; Escobar, Antonio Jose; Goldstein, Aviva; Torres, Mina; Varma, Rohit

    2015-01-01

    Objectives The goal of this research was to evaluate nutrition education targeting Latinas, a group at particular risk of obesity and diabetes, which predict to later life cardiovascular disease and dementia. Methods Culturally tailored, theory-based nutrition education was provided to Mexican origin Latinas aged 48 to 84. The randomized design compared participants in workshops incorporating the connection between dietary fat and brain health, participants in workshops focusing only on dietary fat and heart health, a waitlist control group, and a posttest only control group. Results Among those assigned to either intervention, there was statistically significant gain in health literacy, knowledge about dietary fat, and behaviors to reduce dietary fat compared to waitlist control. There was no difference in outcomes between those given the module about diet and brain health and those not provided that module. Discussion A program to encourage dietary fat modification in Latinas proved feasible and modestly effective. PMID:25231884

  18. Los Rizos y el Beisbol. Septimo Modulo de una Serie para Maestros de Escuela Elemental. (Curls and Baseball. Seventh Module of a Series for Elementary School Teachers).

    ERIC Educational Resources Information Center

    Molina, Carmen Eneida, Ed.; And Others

    This guide for teachers, in English and Spanish, examines how assigned sex roles affect grade school girls in competitive sports, simple games, pastimes, and other extracurricular activities. A pre-test and post-test are included to measure the user's awareness of sexual stereotypes. Five object lessons cover the following topics: (1) myths that…

  19. Viva La Diferencia! Segundo Modulo de una Serie para Maestros de Escuela Elemental (Long Live the Difference! Second Module of a Series for Elementary School Teachers).

    ERIC Educational Resources Information Center

    Molina, Carmen Eneida, Ed.; And Others

    This guide, in English and Spanish, is designed to provide teachers with a scientific basis for identifying myths and distortions about men and women. A pre-test and post-test are included to measure the user's awareness of stereotypes. Object lessons address the following areas: (1) common sexual stereotypes; (2) sexual functions; (3) the…

  20. Ideas, Creencias, Actitudes. Primer Modulo de una Serie para Maestros de Escuela Elemental (Ideas, Beliefs, Attitudes. First Module of a Series for Elementary Teachers).

    ERIC Educational Resources Information Center

    Molina, Carmen Eneida, Ed.; And Others

    This guide for teachers, in English and Spanish, examines the role of stereotypes within the context of contemporary beliefs, ideas, and attitudes. A pre-test and post-test are included to measure the user's awareness of stereotypes. Object lessons cover the following topics: (1) definition of stereotypes; (2) racial and ethnic stereotypes; (3)…

  1. "Una mujer trabaja doble aqui": Vignette-based focus groups on stress and work for Latina blue-collar women in eastern North Carolina.

    PubMed

    Easter, Michele M; Linnan, Laura A; Bentley, Margaret E; DeVellis, Brenda M; Meier, Andrea; Frasier, Pamela Y; Kelsey, Kristine S; Campbell, Marci K

    2007-01-01

    Latina women are a growing percentage of the working population, and very little is known about their health needs and interests. The purpose of this article is to share qualitative research results gathered from Latina women with a particular focus on exploring stress and health. This project was a substudy of Health Works in the Community, a 5-year CDC-funded multiple risk-factor reduction trial using participatory action research approaches to address smoking, healthy eating, stress, and physical activity among blue-collar women from 12 manufacturing work sites in rural, eastern North Carolina. Five focus groups were conducted with trained, bilingual facilitators using a vignette-based moderator guide that appeared particularly effective with this population. Results from the focus groups are used to make recommendations for future research with Latinas and for developing effective work-site-based interventions to address issues of stress and health within this population.

  2. Una Introduccion a los Jovenes con Discapacidades: Bibliografia Anotada. Revisiones de CYDLINE (An Introduction to Youth with Disabilities: Annotated Bibliography. CYDINE Reviews).

    ERIC Educational Resources Information Center

    Minnesota Univ., Minneapolis. National Center for Youth with Disabilities.

    This Spanish-language annotated bibliography describes English-language resources covering a wide range of issues related to disabled youth and their families. The 38 bibliographic citations date from 1980 to 1989 and are grouped into the following categories: psychosocial issues, health issues, educational issues, and community living.…

  3. Como evalvar la actuacion del profesor en una clase de segundo idioma (How to Evaluate a Teacher in a Second Language Classroom).

    ERIC Educational Resources Information Center

    Galvez de Bracamonte, Teresa

    This guide in Spanish provides performance criteria for evaluating the foreign language teacher. It provides an outline for analyzing the teacher's actions and teaching methods in the classroom. Through the evaluation by an outsider, the teacher can learn his or her faults in the views of others and can improve on them. The aspects to be analyzed…

  4. Un Segundo Idioma en el Aula: Nos Estamos Perdiendo una Oportunidad? = A Second Language in the Classroom: Are We Missing the Boat?

    ERIC Educational Resources Information Center

    Selman, Ruth Corey

    2007-01-01

    In recent years there has been greater emphasis placed on second language acquisition in schools. To be prepared for life in the 21st century, to function within an increasingly interdependent world society, to be free from the petty biases that hinder understanding and from the larger hatreds that lead to confrontation, children will need to…

  5. Ayudando a Ninos Dotados a Volar: Una Guia Practica para Padres y Maestros (Helping Gifted Children Soar: A Practical Guide for Parents and Teachers).

    ERIC Educational Resources Information Center

    Strip, Carol A.

    Intended for parents of gifted children, this book, in Spanish, stresses the importance of positive relationships between parents and teachers as they work to meet children's academic, emotional, and social needs. Individual chapters address the following topics: (1) parenting the gifted child as a wild roller coaster ride; (2) determining whether…

  6. IDEA: !"Vamos a Conocer Espana!: Una Guia Cultural Basada en Imagenes" (Let's Become Acquainted with Spain!: A Basic Cultural Guide in Pictures).

    ERIC Educational Resources Information Center

    Inestrillas, Mar

    1997-01-01

    Presents a collection of pictures presenting a visual array of the geographic features, customs, art, dress, and traditions of the Spanish culture on the European continent that are intended for classroom use. (Author/CK)

  7. What's in a Word? Elementary Students Learn a Lesson in the Language of Respect. Los Estudiantes de Primaria Aprenden una Leccion en el Lenguaje del Respeto.

    ERIC Educational Resources Information Center

    Maddalozzo, Rebecca

    2001-01-01

    Describes how one elementary teacher helped students in her class and in the entire school see through ethnic biases and feel proud of being bilingual or having bilingual friends. Her efforts taught the children that bilingual students are very much like their non-bilingual classmates in being unique people with talents that should be respected.…

  8. Caracterización espectro-fotométrica del entorno de una muestra de blazares en el óptico

    NASA Astrophysics Data System (ADS)

    Torres-Zafra, J.; Cellone, S.; Andruchow, I.

    2016-08-01

    BLLac objects are a class of active galactic nuclei characterized by presenting optical spectra without evident features; for this reason it is very difficult to determine their redshifts (). In this paper we perform a spectrophotometric study of the environment of three BLLac type objects: 3C 66A, PG1,553113 and PKS0332403, using data obtained with the Multi-Object Spectrograph and Camera, instrument at the 8m Gemini North and Gemini South telescopes. The analysis of these data allows us to detect galaxy cluster candidates with redshifts of , and respectively. Therefore, we discuss the probability of membership of the sources studied here to these structures.

  9. Planteamientos multiculturales en la educacion: una experiencia alemana. Studies and Evaluation Papers 14. (Multicultural Approaches in Education: A German Experience. Studies and Evaluation Papers 11).

    ERIC Educational Resources Information Center

    Treppte, Carmen

    This paper describes the development of Turkish Children and Mothers, a project designed to help 5-year-old preschoolers in the Ruhr Valley of Germany develop linguistic, motor, cognitive, and social abilities. The paper also describes various aspects of the project, including those that relate to maternal involvement, educational facilities, the…

  10. Summer Reading Adventure! Tips for Parents of Young Readers = La lectura...Una aventura para el verano: Ideas para padres de ninos que apenas comienzan a leer.

    ERIC Educational Resources Information Center

    Moss, Jeanette

    Over the summer, many children lose ground in the reading skills they are building at school. Weave reading into the family's summer, and children will go back to school refreshed, excited, and ready to pick up where he or she left off. Advice for parents and caregivers includes: seek out books and reading materials that tie into children's summer…

  11. Hacia Adelante: Pathways to College. A Guide for Latino Families [and] Hacia Adelante: Pathways to College. Una Guia Para Familias Latinas.

    ERIC Educational Resources Information Center

    Rodriguez, Rosana; McCollum, Pam; Diaz-Sanchez, Micaela; Romero, Anna Alicia; Montemayor, Aurelio

    This guide provides a family approach to college planning, with the goal of helping Latino students gain college entrance. Part 1 provides basic information about college, including information about how early parents should begin talking with their children about college, how parents can help their children plan for college, ensuring that…

  12. Steppin' On Up: A Post-Secondary Guide for Migrant Students = Tomando Accion: Una Guia para los Estudiantes Migrantes Sobre Que Hacer Despues de la Escuela Secundaria.

    ERIC Educational Resources Information Center

    Western Stream Migrant Education Program Coordination Center, Portland, OR.

    This bilingual guide (English and Spanish) provides information for migrant students on postsecondary education. The guide includes information on: (1) career planning, involving self-exploration, occupational exploration, and strategies for reaching career objectives; (2) planning for postsecondary education during high school, including a…

  13. An Eclectic Professional Development Proposal for English Language Teachers (Una propuesta ecléctica de formación docente para profesores de inglés)

    ERIC Educational Resources Information Center

    Chaves, Orlando; Guapacha, Maria Eugenia

    2016-01-01

    This article reports a mixed-method research project aimed at improving the practices of public sector English teachers in Cali (Colombia) through a professional development program. At the diagnostic stage surveys, documentary analysis, and a focus group yielded the teachers' profile and professional needs. The action phase measured the program's…

  14. Experiencias y repercusión de una formación en ética de investigación

    PubMed Central

    Rupaya, Carmen Rosa García

    2012-01-01

    El presente artículo tiene como propósito describir los logros y repercusiones de la capacitación en ética de la investigación que brinda el Centro Interdisciplinario de Estudios en Bioética de la Universidad de Chile, sirviendo de estímulo, motivación y orientación a profesionales que requieren conocer y aplicar las normas y el raciocinio conducente a la deliberación de los problemas en esta disciplina. Asimismo, describe cómo este conocimiento genera un efecto multiplicador en aspectos tales como la participación en un comité de ética de la investigación (CEI), organización de cursos y creación y desarrollo de líneas de investigación, que repercuten en publicaciones realizadas con estudiantes de posgrado. Relata además los contenidos y estrategias didácticas que pueden ser empleados en cursos de ética y bioética para estudiantes de estomatología y concluye mencionando la aplicación práctica de esta capacitación en los ámbitos docente, institucional y de investigación. PMID:24482556

  15. Conversacion sobre "Tres tristes tigres". Una entrevista de Rita Guibert (A Conversation about "Three Sad Tigers". An Interview with Rita Guibert)

    ERIC Educational Resources Information Center

    Cabrera Infante, Guillermo

    1971-01-01

    Interview took place in London, England, on October 5, 1970 between Cuban writer Guillermo Cabrera Infante and journalist Rita Guibert. Special issue dedicated to contemporary Spanish American literature. (DS)

  16. Perspectivas sobre las escuelas charter: Una resena para padres de familia (Perspectives on Charter Schools: A Review for Parents). ERIC Digest.

    ERIC Educational Resources Information Center

    Donahoo, Saran

    Recently, charter schools have gained popularity with parents, students, and others as alternatives to public schools, but what are charter schools and what effects are they having? This Spanish-language Digest defines charter schools and clarifies some of the administrative and legal details surrounding such schools. The Digest also lays out some…

  17. Formulación matemática del frente de onda de una fuente luminosa según el método modal

    NASA Astrophysics Data System (ADS)

    Villarreal, M. L.; Starck, M.; Recabarren, P.

    The modeling of a wave front sensor luminic signal; using the modal methode of Zernike polinomials; is described. The code was developed with Matlab; and the acquisition is based in a Field Programmable Gate Array device; as part of the initial stage of an Adaptive Optic system development. FULL TEXT IN SPANISH

  18. La Marimba y el joven Pluma de Quetzal: una leyenda chiapaneca. (The Marimba and the Young Man, Pluma de Quetzal: A Chiapaneca Legend.)

    ERIC Educational Resources Information Center

    Marquez, Jerry

    The illustrated book is about the legend of Pluma de Quetzal and the marimba. The story, which takes place in the Mexican state of Chiapas, tells how the woodcutters who lived in the area would sit around the fire talking and singing every night. Sung by tired voices, their songs had no happy music. Instead of happiness and hope, they expressed…

  19. Alianza para el Aprendizaje: Una guia de actividades educativas para familias (Alliance for Learning: A Guide of Educational Activities for Families).

    ERIC Educational Resources Information Center

    Carr, Phil

    This Spanish-language publication condenses the information in the Alliance for Learning series. The publication is intended principally for families with preschool or primary grade children, although the material can be used with older children. The sections of the publication address various themes and present activities that parents can do with…

  20. Emotions as Learning Enhancers of Foreign Language Learning Motivation (Las emociones como potenciadoras de la motivación en el aprendizaje de una lengua extranjera)

    ERIC Educational Resources Information Center

    Méndez López, Mariza G.; Peña Aguilar, Argelia

    2013-01-01

    The present article reports on a study that explores the effects of the emotional experiences of Mexican language learners on their motivation to learn English. In this qualitative research we present how emotions impact the motivation of university language learners in south Mexico. Results suggest that emotions, both negative and positive,…

  1. La Red Regional Replad: Una Estrategia Innovadora para la Capacitacion de Administradores Educacionales (The Regional Network Replad: An Innovative Strategy for the Training and Preparation of Educational Administrators).

    ERIC Educational Resources Information Center

    Jimenez Espinoza, Jorge

    This document presents an overview, analysis, and historical assessment of the Major Project for Education in Latin America and the Caribbean. Conferences, regional meetings, and outcomes from the inception of the project in 1979 are described. This project stresses the establishment of a regional network for exchange of information, experiences,…

  2. Screenwriting: A Strategy for the Improvement of Writing Instructional Practices (La escritura de guiones: una estrategia para mejorar las prácticas instruccionales de escritura)

    ERIC Educational Resources Information Center

    Amado, Hernán

    2010-01-01

    This article presents a pedagogical experience that addresses the use of an instructional strategy called screenwriting aimed at improving the teaching of writing in an educational context. This pedagogical intervention took place in a private English language school, where three adult students willingly participated to create their own short…

  3. Sistemas Eólicos Pequeños para Generación de Electricidad: Una guia para consumidores en Nuevo México

    SciTech Connect

    Not Available

    2005-10-01

    This Spanish version of the popular Small Wind Electric Systems: A New Mexico Consumer's Guide provides consumers with information to help them determine whether a small wind electric system can provide all or a portion of the energy they need for their home or business based on their wind resource, energy needs, and economics. Topics include how to make a home more energy efficient, how to choose the correct turbine size, the parts of a wind electric system, how to determine whether enough wind resource exists, how to choose the best site for a turbine, how to connect a system to the utility grid, and whether it's possible to become independent of the utility grid using wind energy. In addition, the cover of the guide contains a list of contacts for more information.

  4. Estudio de los Esquemas Conceptuales y de los Perfiles de Unos Alumnos de Segundo de Bup en Relacion con el Concepto de Pendiente de Una Recta.

    ERIC Educational Resources Information Center

    Gimenez, Carmen Azcarate

    1992-01-01

    Presents a study to determine students' concept of slope carried out in three classes of the second form before introducing the notion of derivative. Discusses the meaning of conceptual framework and reviews literature on slope. Analyzes student responses to a questionnaire for mathematical content and expression and interprets the results. (MDH)

  5. ""Una Persona Derechita" (Staying Right in the Mind)": Perceptions of Spanish-Speaking Mexican American Older Adults in South Texas "Colonias"

    ERIC Educational Resources Information Center

    Sharkey, Joseph R.; Sharf, Barbara F.; St. John, Julie A.

    2009-01-01

    Purpose: This study describes the perceptions of brain health among older Spanish-speaking Mexican Americans who reside in colonia areas of the Lower Rio Grande Valley of Texas. Design and Methods: In 2007, 33 Mexican American older adults (9 men and 24 women) were recruited by "promotoras" (community health workers) from clusters of "colonias" in…

  6. El Arte de Aprender: Una Aventura Cooperativa. Un guia de recursos para trabajar con ninos jovenes. (Learning: A Cooperative Adventure. A Resource Guide for Working with Young Children.)

    ERIC Educational Resources Information Center

    Arizona State Dept. of Education, Phoenix.

    Due to the large numbers of children from Spanish-speaking homes, many districts send both English and Spanish written communication to parents and community members. Therefore this booklet, a Spanish translation of "Learning: A Cooperative Adventure" (ED 119 868), was prepared to provide parents and preschool and kindergarten staff members with…

  7. Logo and Von Neumann Ideas [and] Towards a Humanistic Use of Computers in Education = Hacia una insercion humanista de las computadoras en la educacion.

    ERIC Educational Resources Information Center

    Reggini, Horacio C.

    The first article, "LOGO and von Neumann Ideas," deals with the creation of new procedures based on procedures defined and stored in memory as LOGO lists of lists. This representation, which enables LOGO procedures to construct, modify, and run other LOGO procedures, is compared with basic computer concepts first formulated by John von Neumann.…

  8. Impacto de un programa de lectura extensiva en la adquisicion de una segunda lengua (Impact of an Extensive Reading Program on Second Language Acquisition).

    ERIC Educational Resources Information Center

    Coll, Ana; And Others

    This study investigates the application of Krashen's Input Hypothesis, studying the relationship between exposure to the target language and language acquisition within the context of the English-as-a-foreign-language secondary classroom in Spain. The project studied the effect of additional reading instruction with emphasis on reading for…

  9. Resultados de una encuesta sobre posibles reformas ortograficas en el espanol del siglo XX (Results of a Survey Concerning Possible Orthographic Reforms in Twentieth Century Spanish)

    ERIC Educational Resources Information Center

    Varela Cuellar, Beatriz

    1976-01-01

    This article presents the results of a questionnaire sent to Spanish teachers regarding possible orthographic reforms in Spanish. Changes considered included elimination of certain letters and representation of each phoneme by only one letter. Responses to each question are classified and explained. (Text is in Spanish.) (CHK)

  10. Climate change impacts on groundwater resources: modelled deficits in a chalky aquifer, Geer basin, Belgium

    NASA Astrophysics Data System (ADS)

    Brouyère, Serge; Carabin, Guy; Dassargues, Alain

    'eau du bassin du Geer en Belgique. Le modèle de nappe est décrit en détail et les résultats sont discutés en terme d'impact du changement climatique sur l'évolution des réserves souterraines. Les premiers résultats indiquent que des déficits d'eau souterraine peuvent apparaître dans le futur en Belgique. Se ha desarrollado un modelo hidrológico integrado (MOHISE) para estudiar el impacto del cambio climático en el ciclo hidrológico de cuencas representativas en Bélgica. Este modelo considera todos los procesos hidrológicos de forma coherente, especialmente en relación con los flujos de aguas subterráneas, que son modelados por medio de un enfoque de elementos finitos espacialmente distribuidos. Gracias a esta herramienta numérica precisa, y tras una calibración y validación detalladas, se puede obtener interpretaciones cuantitativas de los resultados del modelo del acuífero. Considerando escenarios de cambio climático IPCC, se ha aplicado el enfoque integrado a la evaluación del impacto de dicho cambio climático en el ciclo hidrológico de la cuenca del Geer. Se describe los detalles y resultados del modelo de las aguas subterráneas en términos del impacto del cambio climático en la evolución de las reservas de los acuíferos. Los resultados preliminares indican que es posible esperar déficits de aguas subterráneas en un futuro en Bélgica.

  11. Environmental isotopes (18O, 2H, and 87Sr/86Sr) as a tool in groundwater investigations in the Keta Basin, Ghana

    NASA Astrophysics Data System (ADS)

    Jørgensen, Niels; Banoeng-Yakubo, Bruce

    2001-03-01

    et les eaux de surface subissent des variations beaucoup plus fortes de leurs compositions isotopiques, dues à l'évaporation et aux fluctuations saisonnières. Un excès significatif en chlorures dans les eaux souterraines peu profondes, compte tenu de l'évaporation calculée, résulte à la fois de l'évaporation et d'apports marins. Les eaux souterraines de forages profonds et de puits dans les aquifères proches de la côte sont caractérisées par des concentrations relativement élevées en chlorure; une influence marine significative est mise en évidence par des droites de mélange bien définies pour les isotopes du strontium et les isotopes stables de l'oxygène et de l'hydrogène, avec les compositions de l'eau de mer pour l'un des termes du mélange. Les résultats fournis par les isotopes du milieu dans cette étude montrent qu'une approche multi-isotopique est un outil pertinent pour identifier l'origine et les sources d'eaux souterraines salées. Resumen. Se ha aplicado el análisis de los isótopos ambientales (18O, 2H y 87Sr/86Sr) al estudio de las aguas subterráneas en la Cuenca de Keta (Ghana), haciendo énfasis en acuíferos salinizados. Las proporciones de 87Sr/86Sr en las aguas subterráneas y superficiales de la Cuenca de Keta reflejan, fundamentalmente, la geología y la composición mineralógica de las formaciones dominantes en las zonas de captación y de recarga. La composición isotópica de las aguas subterráneas profundas presenta variaciones pequeñas en 18O y 2H y se acerca a la línea meteórica mundial. Las aguas subterráneas someras y las superficiales presentan variaciones considerablemente mayores en la composición isotópica, hecho que refleja la evaporación y las fluctuaciones estacionales. Como resultado de la combinación entre evaporación e influencia marina, se observa un exceso significativo de cloruros en las aguas subterráneas someras en comparación con las pérdidas por evaporación. Las aguas subterráneas de

  12. Operational tools and applications of EO satellite data to retrieve surface fluxes in semi-arid countries

    NASA Astrophysics Data System (ADS)

    Tanguy, Maliko

    ítulo 4), se evalúa la fiabilidad de una nueva parametrización para estimar el flujo de calor en el suelo (G) con el fin de ser utilizado en métodos de estimación de la evapotranspiración (ET) usando datos de teledetección. La parametrización de G se optimiza usando datos de flujo de energía obtenido durante las campañas del proyecto AMMA, y muestra buenos resultados y una mejora de las estimaciones del flujo de calor sensible (H) y de ET cuando se utiliza conjuntamente con el método del triángulo (Jiang & Islam, 2001). En una segunda parte (Capítulo 5), el método del triángulo se compara con valores de ET estimado por un modelo de superficie terrestre (JULES). Se intenta calibrar JULES usando el método del triángulo mediante simulaciones de Monte Carlo, pero los dos métodos muestran resultados muy diferentes, indicando que se necesita tareas de comparación profundizadas para poder evaluar la eficacia de estos modelos (de superficie terrestre y basados en la teledetección) para estimar los flujos de energía a la superficie. El capítulo 6 presenta un conjunto de ejemplos de aplicaciones operacionales para estimar los flujos de superficie usando datos de teledetección. El primer ejemplo consiste en el estudio de la evolución temporal de mapas de ET en África occidental bajo la influencia del monzón africano. En el segundo ejemplo, se aplica la nueva parametrización de G descrita en el capítulo 4 para calcular y analizar la evolución a largo plazo (2000-2009) de los componentes del balance de energía a la superficie, G, H y ET, en diferentes puntos de la cuenca del río Segura (Sureste español) utilizando datos del sensor MODIS-Terra (temperatura superficial y NDVI). La distribución temporal y espacial de ET revela diferentes controles sobre ET. En el último ejemplo, datos de temperatura superficial del mar del sensor MODIS-Aqua se utilizaron para validar un modelo matemático para calcular los flujos superficiales de una laguna costera del

  13. Aerobiological study in east-central Iberian Peninsula: pollen diversity and dynamics for major taxa.

    PubMed

    Pérez-Badia, Rosa; Rapp, Ana; Vaquero, Consolación; Fernández-González, Federico

    2011-01-01

    A study was made of airborne pollen counts in Cuenca (east-central Iberian Peninsula, Spain), using data obtained over a 3-year period (2008-2010). This is the first such study carried out in the World Heritage city of Cuenca, situated in the large region of Castilla-La Mancha. Air monitoring was performed using the sampling and analysis procedures recommended by the Spanish Aerobiology Network. Sampling commenced in mid- 2007, and provided the first recorded pollen-spectrum for the area. The greatest pollen-type diversity was recorded in spring, whilst the highest pollen counts (over 80 percent of the annual total) were observed between February and June. The lowest counts were found in September, November and December. The 10 leading taxa, in order of abundance, were: Cupressaceae, Quercus, Urticaceae, Pinus, Olea, Poaceae, Populus, Platanus, Chenopodiaceae-Amaranthaceae and Plantago. The pollen calendar was thus typically Mediterrean, and comprised the 27 pollen types reaching 10-day mean counts of over 1 grain/m(3) of air. Maximum concentration values during the day were recorded between 12:00-20:00, coinciding with the highest temperatures and lowest humidity levels. The pollen types responsible for most allergies in the city of Cuenca, ordered by the number of days on which risk levels were reached, were: Poaceae, Urticaceae, Cupressaceae, Olea, Platanus and Chenopodiaceae-Amaranthaceae. PMID:21736275

  14. Genetic Diversity of Pinus nigra Arn. Populations in Southern Spain and Northern Morocco Revealed By Inter-Simple Sequence Repeat Profiles †

    PubMed Central

    Rubio-Moraga, Angela; Candel-Perez, David; Lucas-Borja, Manuel E.; Tiscar, Pedro A.; Viñegla, Benjamin; Linares, Juan C.; Gómez-Gómez, Lourdes; Ahrazem, Oussama

    2012-01-01

    Eight Pinus nigra Arn. populations from Southern Spain and Northern Morocco were examined using inter-simple sequence repeat markers to characterize the genetic variability amongst populations. Pair-wise population genetic distance ranged from 0.031 to 0.283, with a mean of 0.150 between populations. The highest inter-population average distance was between PaCU from Cuenca and YeCA from Cazorla, while the lowest distance was between TaMO from Morocco and MA Sierra Mágina populations. Analysis of molecular variance (AMOVA) and Nei’s genetic diversity analyses revealed higher genetic variation within the same population than among different populations. Genetic differentiation (Gst) was 0.233. Cuenca showed the highest Nei’s genetic diversity followed by the Moroccan region, Sierra Mágina, and Cazorla region. However, clustering of populations was not in accordance with their geographical locations. Principal component analysis showed the presence of two major groups—Group 1 contained all populations from Cuenca while Group 2 contained populations from Cazorla, Sierra Mágina and Morocco—while Bayesian analysis revealed the presence of three clusters. The low genetic diversity observed in PaCU and YeCA is probably a consequence of inappropriate management since no estimation of genetic variability was performed before the silvicultural treatments. Data indicates that the inter-simple sequence repeat (ISSR) method is sufficiently informative and powerful to assess genetic variability among populations of P. nigra. PMID:22754321

  15. Genetic diversity of Pinus nigra Arn. populations in Southern Spain and Northern Morocco revealed by inter-simple sequence repeat profiles.

    PubMed

    Rubio-Moraga, Angela; Candel-Perez, David; Lucas-Borja, Manuel E; Tiscar, Pedro A; Viñegla, Benjamin; Linares, Juan C; Gómez-Gómez, Lourdes; Ahrazem, Oussama

    2012-01-01

    Eight Pinus nigra Arn. populations from Southern Spain and Northern Morocco were examined using inter-simple sequence repeat markers to characterize the genetic variability amongst populations. Pair-wise population genetic distance ranged from 0.031 to 0.283, with a mean of 0.150 between populations. The highest inter-population average distance was between PaCU from Cuenca and YeCA from Cazorla, while the lowest distance was between TaMO from Morocco and MA Sierra Mágina populations. Analysis of molecular variance (AMOVA) and Nei's genetic diversity analyses revealed higher genetic variation within the same population than among different populations. Genetic differentiation (Gst) was 0.233. Cuenca showed the highest Nei's genetic diversity followed by the Moroccan region, Sierra Mágina, and Cazorla region. However, clustering of populations was not in accordance with their geographical locations. Principal component analysis showed the presence of two major groups-Group 1 contained all populations from Cuenca while Group 2 contained populations from Cazorla, Sierra Mágina and Morocco-while Bayesian analysis revealed the presence of three clusters. The low genetic diversity observed in PaCU and YeCA is probably a consequence of inappropriate management since no estimation of genetic variability was performed before the silvicultural treatments. Data indicates that the inter-simple sequence repeat (ISSR) method is sufficiently informative and powerful to assess genetic variability among populations of P. nigra.

  16. Groundwater capture processes under a seasonal variation in natural recharge and discharge

    NASA Astrophysics Data System (ADS)

    Maddock, Thomas, III.; Vionnet, Leticia Beatriz

    piézométrie initiale unique et à un seul jeu de données de conditions aux limites conduit à un mauvais calcul des prélèvements. Il faut alors utiliser une condition de recharge initiale pour chaque saison. Cette approche peut être réalisée en déterminant des solutions permanentes périodiques, variantes au cours des saisons, mais se répétant d'année en année. Un modèle de nappe régional, précédemment mis au point pour une partie du bassin de la rivière San Pedro (Arizona, États-Unis), a été modifié pour illustrer l'effet de conditions initiales différentes sur des solutions transitoires et sur le calcul des prélèvements. Resumen Se define como "captura" al aumento de recarga y descenso de descarga que tiene lugar cuando se impone un bombeo en un acuífero en estado de equilibrio dinámico. Se suelen utilizar modelos regionales de agua subterránea para calcular la captura en un procedimiento que consta de dos etapas. Una solución en régimen estacionario proporciona la distribución inicial de niveles piezométricos, los flujos a través de los contornos de la región modelada y el punto de partida para el cálculo de la captura. Las soluciones transitorias proporcionan los cambios en los flujos a través de los contornos. La diferencia entre las soluciones estacionaria y transitoria da el valor de la captura. Cuando los cambios estacionales son importantes, la utilización de un único estado inicial de niveles y de flujos en los contornos da lugar a errores en el cálculo de la captura. En este caso debe usarse una condición inicial para cada una de las estaciones. Esto se puede conseguir obteniendo soluciones periódicas estacionarias, que varíen a lo largo de las estaciones, pero que se repitan año a año. Un modelo regional desarrollado previamente para el estudio de una parte de la cuenca del Río San Pedro, en Arizona (EE.UU.) se modificó para ilustrar el efecto que las distintas condiciones iniciales tienen en el cálculo de la

  17. Scheme for development of monitoring networks for springs in Bavaria, Germany

    NASA Astrophysics Data System (ADS)

    Bender, Steffen; Einsiedl, Florian; Wohnlich, Stefan

    2001-03-01

    constituer un jeu de données de base pour guider la future surveillance. Une procédure de sélection a été développée autour de quatre paramètres: (1) les unités géologiques, comprenant les principaux aquifères, (2) le débit des sources, (3) l'occupation du sol dans le bassin, et (4) la dimension approximative du bassin d'alimentation souterrain. Toutefois, dans la phase initiale de l'étude, seuls les trois premiers paramètres ont été étudiés. Ces paramètres constituent une matrice d'évaluation de chaque région hydrogéologique de Bavière pour aider à la sélection de sources supplémentaires destinées au réseau de surveillance proposé. Resumen. La red de muestreo actual de aguas subterráneas en Bavaria (Alemania) está formada sobre todo por pozos, mientras que apenas hay unos pocos manantiales naturales. Los análisis incluyen, principalmente, los parámetros físico-químicos habituales. Con el objeto de desarrollar un plan de gestión de las aguas subterráneas en Bavaria a largo plazo, el Consejo del Estado para la Gestión del Agua pretende establecer una red de muestreo de manantiales diferenciada en las once regiones en que se divide el estado desde el punto de vista de las aguas subterráneas. Como primer paso, se determinaron los parámetros físico-químicos significativos que mostraban una fluctuación anual considerable (tras un muestreo de 1 a 3 años), con la finalidad de crear una base de datos elemental que canalizara los muestreos futuros. Se desarrolló un procedimiento de selección con base en cuatro parámetros: (1) unidades geológicas y acuíferos principales; (2) caudal del manantial; (3) uso del suelo dentro de la cuenca; y (4) tamaño aproximado de la zona de captación subterránea. Sin embargo, sólo se investigaron los tres primeros parámetros durante la fase inicial del estudio. Con ellos, se estableció una matriz para evaluar cada zona acuífera dentro de Bavaria y ayudar en la inclusión de otros manantiales en la

  18. The influence of faults in basin-fill deposits on land subsidence, Las Vegas Valley, Nevada, USA

    NASA Astrophysics Data System (ADS)

    Burbey, Thomas

    2002-07-01

    -dimensional consolidation. Jour. Applied Physics 12:155-164), a été utilisé pour évaluer la nature du déplacement au voisinage de deux failles verticales. La faille a été simulée comme 1) une barrière de faible perméabilité pour l'écoulement horizontal, 2) une rupture structurale dans le milieu, mais sans obstruction de l'écoulement, et 3) une combinaison des deux précédentes conditions. Les résultats indiquent que la barrière de faible perméabilité favorise fortement le déplacement horizontal. Le plan de faille constitue aussi un lieu de subsidence différentielle verticale significative. Les fortes contraintes calculées au voisinage de la faille laissent penser qu'il existe un fort potentiel de rupture et le développement de fissures du sol quand on suppose que la faille possède une faible perméabilité. Les résultats utilisant une combinaison des deux conditions suggèrent que le développement potentiel de fissures peut être grand sur ou à proximité du plan de faille et que la déformation horizontale joue vraisemblablement un rôle clé dans ce développement. Resumen. Se conoce la contribución que la deformación horizontal causada por el bombeo de sistemas acuíferos confinados tienen en el desarrollo de fisuras en regiones semiáridas, como es el caso del Valle de Las Vegas (Nevada, Estados Unidos de América). A pesar de la estabilización de los niveles, se continúa desarrollando nuevas fisuras, mientras las ya existentes se alargan y ensanchan cerca de las fallas de relleno de cuenca. Se ha utilizado un modelo tridimensional de desplazamiento granular basado en la teoría de consolidación de Biot (Biot, M.A., 1941. General theory of three-dimensional consolidation. J. Applied Physics, 12: 155-164) para evaluar la naturaleza del desplazamiento junto a dos fallas verticales. Se ha simulado cada falla como (1) una barrera de baja permeabilidad al flujo horizontal, (2) un hueco o ruptura estructural en el medio pero sin obstrucción al flujo de aguas

  19. Contributions of groundwater conditions to soil and water salinization

    NASA Astrophysics Data System (ADS)

    Salama, Ramsis B.; Otto, Claus J.; Fitzpatrick, Robert W.

    piézométrique. Le ou les ensembles salins se sont formés par évaporation couplée à la précipitation d'un carbonate alcalino-terreux et à la dissolution de sels par capillarité. Resumen La salinización es el proceso por el cual la concentración de sales disueltas en el agua o el suelo aumenta por causas naturales o antrópicas. El contenido de agua se reduce por uno o una combinación de los siguientes mecanismos: evaporación, evapotranspiración, hidrólisis y goteo entre acuíferos. La salinidad aumenta en la dirección del flujo subterráneo, desde los puntos de recarga hacia los de descarga. La salinización se puede explicar por dos modelos químicos que se pueden definir como erosión y deposición y que están de acuerdo con los clásicos procesos geológicos que tienen los mismos nombres. Se conocen cinco procesos de salinización de suelos ligados al agua o a la extracción de la misma en climas áridos o semiáridos. En todos los casos que se presentan el agua subterránea es el principal agente geológico de transmisión, acumulación y descarga de sales. A escala de pequeña cuenca, en Australia Occidental y del Sur, el agua se pierde mediante evapotranspiración e hidrólisis. El agua subterránea salina fluye a lo largo de los cauces de los arroyos y se acumula en los paleocanales, que actúan como depósitos, hasta que finalmente descarga en los lagos, donde se acumula la mayor parte de la salinidad. En los hummocks de la Zona Norte de los Grandes Llanos de Canadá y EEUU, la recarga localizada y el tipo de descarga provocan que la salinización tenga lugar fundamentalmente en las depresiones. A escala regional y en cuencas cerradas este mismo mecanismo provoca playas o lagos salinos. En los acuíferos continentales de los rift del Sudán, la salinidad se incrementa a lo largo de las líneas de flujo subterráneo y se concentra en el límite distal. La zona salina en cada rift forma una cresta cerrada que se manifiesta en los mapas piezom

  20. El Derecho de su Hijo(a) a Una Educacion: Una guia para los Padres de Ninos Impedidos en el Estado de Nueva York (Your Child's Right to an Education: A Guide for Parents of Children with Handicapping Conditions in New York State).

    ERIC Educational Resources Information Center

    New York State Education Dept. Albany. Office for the Education of Children with Handicapping Conditions.

    Intended for parents of handicapped students, the guide (available in English, Spanish, or Chinese) sets forth the New York State policies for speical education. The following topics are among those considered: eligibility for special education, program types, alternative placements (such as residential settings), referral, evaluation,…

  1. Una Guia para Los Padres sobre La Educacion Especial: El Derecho de Su Hijo(a) a Adquirir una Educacion en el Estado de Nueva York (A Parent's Guide to Special Education: Your Child's Right to an Education in New York State).

    ERIC Educational Resources Information Center

    New York State Education Dept. Albany. Office for the Education of Children with Handicapping Conditions.

    This guide provides information to help parents of special needs children in New York become active partners in the planning and implementation of special education programs. The first part of the guide provides in-depth information related to the special education process in New York State public schools. A historical view of children's rights to…

  2. Mitigation of Disagreement in Peer Review among L2 Learners and Native Speakers in a College Writing Class (Mitigación del Impacto de las Opiniones de Desacuerdo en el Proceso de Revisión por Pares entre Estudiantes de una Segunda Lengua y Hablantes Nativos en una Clase de Escritura a Nivel Universitario)

    ERIC Educational Resources Information Center

    Christoffersen, Katherine O'Donnell

    2015-01-01

    Peer review is now a commonplace practice in process-oriented writing instruction. A crucial aspect of peer review is assessing another classmate's work, which encompasses the act of disagreement. Given its prevalence in the classroom, it is necessary to analyze how L2 learners mitigate disagreement in the context of peer review with other L2…

  3. Three-dimensional mathematical model to simulate groundwater flow in the lower Palar River basin, southern India

    NASA Astrophysics Data System (ADS)

    Senthilkumar, M.; Elango, L.

    de puits répartis dans cette région. Le modèle simule l'écoulement souterrain dans une région d'environ 392 km2 avec 70 rangs, 40 colonnes et deux couches. Le modèle a fonctionné en régime transitoire en utilisant une approximation aux différences finies d'une équation différentielle partielle en trois dimensions de l'écoulement souterrain dans cet aquifère pour la période 1991-2001. Le modèle a été calibré pour des conditions de régime permanent et transitoire. Les charges hydrauliques calculées étaient en bon accord avec celles observées. Sur la base des résultats du modèle, il est apparu que le système aquifère est stable pour ce taux de pompage, excepté en quelques sites le long de la côte où l'eau marine a pénétré 50-100 m dans les terres. Le modèle transitoire a tourné jusqu'en 2010 afin de prévoir l'écoulement souterrain dynamique pour différents scénarios de pompage excessif et de recharge réduite. Il se produit un abaissement de la piézométrie de la nappe de 0.6 à 0.8 m dans la partie orientale, alors que l'aquifère est soumis à un prélèvement supplémentaire de 8,000 m3/jour à l'une des stations principales de pompage. Même avec le niveau actuel de pompage, la piézométrie de la nappe descendrait sous le niveau de la mer au cours des saisons sèches. Le modèle prédit le fonctionnement du système aquifère sous différentes conditions de stress hydrologique. Los modelos tridimensionales de flujo de aguas subterráneas son útiles para gestionar los recursos hídricos subterráneos, ya que proporcionan una aproximación a los diversos procesos hidrológicos y una descripción cuantitativa del flujo de agua en el acuífero. Se ha desarrollado un estudio de modelación de este tipo en una parte de la cuenca baja del río Palar, en el Sur de la India. Esta zona se caracteriza por las intensas extracciones de aguas subterráneas para usos agrícolas, industriales y domésticos. Hay tres estaciones de bombeo

  4. Three-dimensional mathematical model to simulate groundwater flow in the lower Palar River basin, southern India

    NASA Astrophysics Data System (ADS)

    Senthilkumar, M.; Elango, L.

    de puits répartis dans cette région. Le modèle simule l'écoulement souterrain dans une région d'environ 392 km2 avec 70 rangs, 40 colonnes et deux couches. Le modèle a fonctionné en régime transitoire en utilisant une approximation aux différences finies d'une équation différentielle partielle en trois dimensions de l'écoulement souterrain dans cet aquifère pour la période 1991-2001. Le modèle a été calibré pour des conditions de régime permanent et transitoire. Les charges hydrauliques calculées étaient en bon accord avec celles observées. Sur la base des résultats du modèle, il est apparu que le système aquifère est stable pour ce taux de pompage, excepté en quelques sites le long de la côte où l'eau marine a pénétré 50-100 m dans les terres. Le modèle transitoire a tourné jusqu'en 2010 afin de prévoir l'écoulement souterrain dynamique pour différents scénarios de pompage excessif et de recharge réduite. Il se produit un abaissement de la piézométrie de la nappe de 0.6 à 0.8 m dans la partie orientale, alors que l'aquifère est soumis à un prélèvement supplémentaire de 8,000 m3/jour à l'une des stations principales de pompage. Même avec le niveau actuel de pompage, la piézométrie de la nappe descendrait sous le niveau de la mer au cours des saisons sèches. Le modèle prédit le fonctionnement du système aquifère sous différentes conditions de stress hydrologique. Los modelos tridimensionales de flujo de aguas subterráneas son útiles para gestionar los recursos hídricos subterráneos, ya que proporcionan una aproximación a los diversos procesos hidrológicos y una descripción cuantitativa del flujo de agua en el acuífero. Se ha desarrollado un estudio de modelación de este tipo en una parte de la cuenca baja del río Palar, en el Sur de la India. Esta zona se caracteriza por las intensas extracciones de aguas subterráneas para usos agrícolas, industriales y domésticos. Hay tres estaciones de bombeo

  5. GIS-based hydrogeological databases and groundwater modelling

    NASA Astrophysics Data System (ADS)

    Gogu, Radu Constantin; Carabin, Guy; Hallet, Vincent; Peters, Valerie; Dassargues, Alain

    2001-12-01

    'applications qui ont été développées permet dès maintenant de prochaines avancées. L'intérêt grandit pour le potentiel d'intégration de la technologie des SIG et les modèles de simulation des nappes. Un outil de couplage a été créé entre le schéma de base de données spatiales et l'interface GMS (GroundWater Modelling System, système de modélisation de nappe) du modèle numérique de nappe. Suivant les requêtes en fonction du temps et de l'espace, les données hydrogéologiques stockées dans la base de données peuvent être aisément utilisées dans différents modèles numériques de nappes. Resumen. La fiabilidad y validez de los análisis de aguas subterráneas dependen enormemente de la disponibilidad de muchos datos de alta calidad. Integrarlos en una estructura consistente y lógica mediante un entorno informático sirve para asegurar su validez y disponibilidad, y rrepresenta una herramienta muy potente para ulteriores estudios hidrogeológicos. Se ha diseñado en la región de Valonia (Bélgica) una base de datos hidrogeológica basada en un sistema de información geográfica (GIS), con el que se dispone de útiles para elaborar análisis de vulnerabilidad y modelos hidregeológicos. Se ha utilizado datos de cinco cuencas fluviales, elegidas por sus características hidrogeológicas contrastadas, así como un conjunto de aplicaciones desarrolladas con vistas al futuro. El interés por el potencial que ofrece la integración de la tecnología GIS y los modelos de simulación de aguas subterráneas está en auge. Se ha desarrollado un "emulador" que integra el esquema espacial de la base de datos y la interfaz GMS (GroundWater Modelling System) de modelación numérica de aguas subterráneas. A partir de búsquedas temporales y espaciales, los datos hidrogeológicos almacenados en la base de datos pueden ser utilizados fácilmente en modelos numéricos diferentes de aguas subterráneas.

  6. Participatory groundwater management in Jordan: Development and analysis of options

    NASA Astrophysics Data System (ADS)

    Chebaane, Mohamed; El-Naser, Hazim; Fitch, Jim; Hijazi, Amal; Jabbarin, Amer

    pour assister les décideurs, les propriétaires de puits et les autres acteurs pour atteindre progressivement un régime de prélèvement durable. Les aspects sociaux et économiques de chaque option et de chaque scénario ont été analysés et présentés aux acteurs, en même temps qu'un résumé des ramifications légales, institutionnelles et environnementales. En combinant une analyse scientifique à une approche participative du bassin d'Amman Zarqa, la gestion des eaux souterraines a été imaginée comme un prototype pouvant être utilisé pour la gestion d'autres bassins aquifères de Jordanie. Il peut également être utile à d'autres régions du monde qui sont concernées par des problèmes similaires de surexploitation des eaux souterraines. La sobreexplotación de las aguas subterráneas ha ido en aumento en Jordania, donde las demandas en competición han crecido frente a una escasez perenne de agua, situación que ha sido agravada por el estado de sequía de la última década. Este artículo presenta los hallazgos de un proyecto en el que se han desarrollado opciones de gestión para hacer frente a la sobreexplotación en uno de los principales sistemas acuíferos de Jordania: la cuenca de Ammán-Zarga. Se ha elaborado opciones para afrontar la situación mediante un enfoque participativo que incluye a personal del gobierno y a diversos grupos de interés de los sectores público y privado. En particular, se ha intentado involucrar a los regantes que se sirven de aguas subterráneas, quienes tienen más probabilidad de ser directamente afectados por los cambios requeridos para devolver el sistema a un balance equilibrado. A partir de la información obtenida en rápidas campañas de valoración, así como de encuentros con la comunidad y entrevistas con los expertos técnicos del gobierno, se ha identificado un amplio conjunto de opciones para su evaluación. Basándose en un análisis integrado de los aspectos hidrogeológicos, sociales y econ

  7. Increased Virulence in Sunflower Broomrape (Orobanche cumana Wallr.) Populations from Southern Spain Is Associated with Greater Genetic Diversity

    PubMed Central

    Martín-Sanz, Alberto; Malek, Jebri; Fernández-Martínez, José M.; Pérez-Vich, Begoña; Velasco, Leonardo

    2016-01-01

    Orobanche cumana Wallr. (sunflower broomrape) is a holoparasitic weed that infects roots of sunflower in large areas of Europe and Asia. Two distant O. cumana gene pools have been identified in Spain, one in Cuenca province in the Center and another one in the Guadalquivir Valley in the South. Race F has been hypothesized to have arisen by separate mutational events in both gene pools. In the Guadalquivir Valley, race F spread in the middle 1990’s to become predominant and contained so far with race F hybrids. Recently, enhanced virulent populations of O. cumana have been observed in commercial fields parasitizing race F resistant hybrids. From them, we collected four independent populations and conducted virulence and SSR marker-based genetic diversity analysis. Virulence essays confirmed that the four populations studied can parasitize most of the race F resistant hybrids tested, but they cannot parasitize the differential inbred lines DEB-2, carrying resistance to race F and G, and P-96, resistant to F but susceptible to races G from other countries. Accordingly, the new populations have been classified as race GGV to distinguish them from other races G. Cluster analysis with a set of populations from the two Spanish gene pools and from other areas, mainly Eastern Europe, confirmed that race GGV populations maintain close genetic relatedness with the Guadalquivir Valley gene pool. This suggested that increased virulence was not caused by new introductions from other countries. Genetic diversity parameters revealed that the four populations had much greater genetic diversity than conventional populations of the same area, containing only alleles present in the Guadalquivir Valley and Cuenca gene pools. The results suggested that increased virulence may have resulted from admixture of populations from the Guadalquivir Valley and Cuenca followed by recombination of avirulence genes. PMID:27200060

  8. Groundwater targeting in a hard-rock terrain using fracture-pattern modeling, Niva River basin, Andhra Pradesh, India

    NASA Astrophysics Data System (ADS)

    Srinivasa Rao, Y.; Reddy, T. V. K.; Nayudu, P. T.

    2000-09-01

    'eau souterraine. Dans la région étudiée, les fractures N35°-55°E ont été identifiées comme étant en extension, et les fractures N35°-55°W comme étant à la fois en extension et en cisaillement. Ces fractures sont apparemment les fractures ouvertes les plus jeunes. Partout où la densité des fractures N35°-55°E et N35°-55°W est élevée, la zone altérée est plus épaisse, les fluctuations de la nappe sont faibles et les rendements des puits sont forts. Des zones à potentiel en eau souterraine ont ainsi été délimitées et classées en excellent, bon à très bon, assez bon et médiocre. Resumen. Las zonas de fracturación y de meteorización son las que condicionan el flujo de agua subterránea en rocas duras, debido a la falta de porosidad primaria en la matriz rocosa. Se utilizaron cinco conjuntos de datos fotográficos del satélite Landsat con el fin de preparar un mapa integrado hidrogeomorfológico de la cuenca del río Niva, al sur del estado Andhra Pradesh (India). El objetivo era estudiar el potencial de aguas subterráneas en esta región, que es propensa a períodos de sequía, en la que predominan las rocas duras. Se aplicó el modelo de deformación integrado de Larsson a la identificación de los sistemas de fracturación. El propósito era, por un lado, identificar los conjuntos de fracturas de tracción más jóvenes, que desempeñan un papel principal como reservorios de aguas subterráneas. Por otro lado, se quería comprender la importancia de la densidad de fracturación en el desarrollo de las aguas subterráneas. Se identificó una familia de fracturas de tracción con orientación N35°-55°E y otra familia N35°-55°W que contenía tanto bandas de cizalla como fracturas de tracción. Aparentemente, se trataba de las fracturas abiertas más recientes. El espesor de la zona de meteorización es grande cuando la densidad de fracturas de estas dos familias es elevada, hecho que está asociado a fluctuaciones pequeñas del nivel freático y

  9. The influence of faults in basin-fill deposits on land subsidence, Las Vegas Valley, Nevada, USA

    NASA Astrophysics Data System (ADS)

    Burbey, Thomas

    2002-07-01

    -dimensional consolidation. Jour. Applied Physics 12:155-164), a été utilisé pour évaluer la nature du déplacement au voisinage de deux failles verticales. La faille a été simulée comme 1) une barrière de faible perméabilité pour l'écoulement horizontal, 2) une rupture structurale dans le milieu, mais sans obstruction de l'écoulement, et 3) une combinaison des deux précédentes conditions. Les résultats indiquent que la barrière de faible perméabilité favorise fortement le déplacement horizontal. Le plan de faille constitue aussi un lieu de subsidence différentielle verticale significative. Les fortes contraintes calculées au voisinage de la faille laissent penser qu'il existe un fort potentiel de rupture et le développement de fissures du sol quand on suppose que la faille possède une faible perméabilité. Les résultats utilisant une combinaison des deux conditions suggèrent que le développement potentiel de fissures peut être grand sur ou à proximité du plan de faille et que la déformation horizontale joue vraisemblablement un rôle clé dans ce développement. Resumen. Se conoce la contribución que la deformación horizontal causada por el bombeo de sistemas acuíferos confinados tienen en el desarrollo de fisuras en regiones semiáridas, como es el caso del Valle de Las Vegas (Nevada, Estados Unidos de América). A pesar de la estabilización de los niveles, se continúa desarrollando nuevas fisuras, mientras las ya existentes se alargan y ensanchan cerca de las fallas de relleno de cuenca. Se ha utilizado un modelo tridimensional de desplazamiento granular basado en la teoría de consolidación de Biot (Biot, M.A., 1941. General theory of three-dimensional consolidation. J. Applied Physics, 12: 155-164) para evaluar la naturaleza del desplazamiento junto a dos fallas verticales. Se ha simulado cada falla como (1) una barrera de baja permeabilidad al flujo horizontal, (2) un hueco o ruptura estructural en el medio pero sin obstrucción al flujo de aguas

  10. Recharge areas and hydrochemistry of carbonate springs issuing from Semmering Massif, Austria, based on long-term oxygen-18 and hydrochemical data evidence

    NASA Astrophysics Data System (ADS)

    Yehdegho, Beyene; Reichl, Peter

    2002-10-01

    altitud. Reflejando el cambio sistemático de la actividad biótica y de las condiciones de recarga en la cuenca, se obtiene una correlación negativa entre la altitud de la recarga y la PCO2, mientras que la concentración de bicarbonato no es modificada por términos fuente/sumidero, lo cual atribuye el cambio a la química de los carbonatos. La PCO2 y el bicarbonato disminuyen aproximadamente 0,22 unidades logarítimicas (en atmósferas) y 38,6 mg/l, respectivamente, por cada 100 m de incremento en la altitud de recarga.

  11. Groundwater flow and solute transport at the Mourquong saline-water disposal basin, Murray Basin, southeastern Australia

    NASA Astrophysics Data System (ADS)

    Simmons, Craig; Narayan, Kumar; Woods, Juliette; Herczeg, Andrew

    2002-03-01

    échargent naturellement. Le bassin de stockage est isolé hydrodynamiquement par des argiles lacustres de faible perméabilité, mais il existe des zones vulnérables au sud-est, là où les argiles sont apparemment absentes. L'importance des fuites verticales et latérales des saumures du bassin et les processus contrôlant leur migration ont été étudiés au moyen (1) d'analyses de chlorures et des isotopes stables de l'eau (2H/1H et 18O/16O) pour définir le mélange entre les eaux souterraines régionales et l'eau du lac, et (2) du code SUTRA d'écoulement souterrain et de transport de soluté d'eaux de densités variables. Les résultats hydrochimiques indiquent que l'eau de stockage évaporée s'est introduite d'au moins 100 m vers l'est et qu'il existe un écoulement négligeable de saumures vers le sud, en direction de la rivière Murray. Le modèle permet de considérer différents scénarios de gestion. L'écoulement des eaux salées vers la rivière Murray était le scénario le pire du fait de l'irrigation qui est appliquée entre le bassin de stockage et la rivière Murray. Les conditions actuelles de fonctionnement produisent un écoulement direct faible, sinon nul, des saumures du bassin vers la rivière. Resumen. Las aguas subterráneas salinas y los retornos de riego se almacenan habitualmente en unas 200 balsas naturales y artificiales de deshechos, situadas a lo largo de la Cuenca de los ríos Murray-Darling (Australia). Su impacto en los acuíferos y en el propio río Murray, que actúa como una de las fuentes principales de abastecimiento de agua en Australia, es un asunto preocupante. En uno de estos lugares, las aguas subterráneas salinizadas son bombeadas al lago Mourquong, que es un complejo natural de descarga del acuífero. La balsa de eliminación está revestida con arcillas lacustres de baja permeabilidad, pero hay áreas vulnerables hacia el sudeste, donde parece no haber arcilla. Se examina el alcance de la precolación vertical y lateral de las

  12. Groundwater targeting in a hard-rock terrain using fracture-pattern modeling, Niva River basin, Andhra Pradesh, India

    NASA Astrophysics Data System (ADS)

    Srinivasa Rao, Y.; Reddy, T. V. K.; Nayudu, P. T.

    2000-09-01

    'eau souterraine. Dans la région étudiée, les fractures N35°-55°E ont été identifiées comme étant en extension, et les fractures N35°-55°W comme étant à la fois en extension et en cisaillement. Ces fractures sont apparemment les fractures ouvertes les plus jeunes. Partout où la densité des fractures N35°-55°E et N35°-55°W est élevée, la zone altérée est plus épaisse, les fluctuations de la nappe sont faibles et les rendements des puits sont forts. Des zones à potentiel en eau souterraine ont ainsi été délimitées et classées en excellent, bon à très bon, assez bon et médiocre. Resumen. Las zonas de fracturación y de meteorización son las que condicionan el flujo de agua subterránea en rocas duras, debido a la falta de porosidad primaria en la matriz rocosa. Se utilizaron cinco conjuntos de datos fotográficos del satélite Landsat con el fin de preparar un mapa integrado hidrogeomorfológico de la cuenca del río Niva, al sur del estado Andhra Pradesh (India). El objetivo era estudiar el potencial de aguas subterráneas en esta región, que es propensa a períodos de sequía, en la que predominan las rocas duras. Se aplicó el modelo de deformación integrado de Larsson a la identificación de los sistemas de fracturación. El propósito era, por un lado, identificar los conjuntos de fracturas de tracción más jóvenes, que desempeñan un papel principal como reservorios de aguas subterráneas. Por otro lado, se quería comprender la importancia de la densidad de fracturación en el desarrollo de las aguas subterráneas. Se identificó una familia de fracturas de tracción con orientación N35°-55°E y otra familia N35°-55°W que contenía tanto bandas de cizalla como fracturas de tracción. Aparentemente, se trataba de las fracturas abiertas más recientes. El espesor de la zona de meteorización es grande cuando la densidad de fracturas de estas dos familias es elevada, hecho que está asociado a fluctuaciones pequeñas del nivel freático y

  13. SOS! Ayuda para Padres: Una Guia Practica para Manejar Problemas de Conducta Comunes y Corrientes. (SOS! Help for Parents: A Practical Guide for Handling Common Everyday Behavior Problems.) Leader's Guide.

    ERIC Educational Resources Information Center

    Clark, Lynn

    This Spanish-language version of "SOS" provides parents with guidance for handling a variety of common behavior problems based on the behavior approach to child rearing and discipline. This approach suggests that good and bad behavior are both learned and can be changed, and proposes specific methods, skills, procedures, and strategies for parents…

  14. Developing Academic Literacy and Voice: Challenges Faced by a Mature ESL Student and Her Instructors (Desarrollo del discurso académico y la voz: retos de una estudiante de inglés como segunda lengua y sus profesores)

    ERIC Educational Resources Information Center

    Correa, Doris

    2010-01-01

    Drawing on critical, socio-cultural and sociolinguistic theories of writing, text and voice, this ethnographic study examines the challenges that a mature ESL student and her instructors in a university course on Spanish Language Media face as they co-construct a common understanding of academic literacy and voice in an undergraduate General…

  15. El Discurso de Pasado en el Espanol de Houston: Imperfectividad Y Perfectividad Verbal en una Situacion de Contacto (Past Tense in the Discourse of Spanish Speakers in Houston: Use of Preterite and Imperfect in a Language Contact Situation).

    ERIC Educational Resources Information Center

    Mrak, N. Ariana

    1998-01-01

    Investigates whether, due to the language contact situation in Houston in a group of a Mexican-American speakers, the imperfect forms of subordinate language (Spanish) are going through a process of reduction in favor of the forms of the superordinate language (English) when compared to the speech of Spanish monolinguals. (Author/VWL)

  16. Ayudando a los Ninos a Amarse a Si Mismos y a Otros: Una guia profesional para el cuidado infantil en el hogar (Helping Children Love Themselves and Others: A Professional Handbook for Family Day Care).

    ERIC Educational Resources Information Center

    Gellert, Sandra; And Others

    This Spanish-language guide presents an anti-bias, multicultural approach to family day care. Part A provides a rationale for such an approach. Subsections of this part concern: (1) family day care as a site for the transmission of bias; (2) characteristics of an anti-bias, multicultural approach; (3) language and stereotypes; (4) developmental…

  17. Determinación de la masa evacuada en una región de oscurecimiento coronal y su relación con la masa de su CME asociada

    NASA Astrophysics Data System (ADS)

    López, F. M.; Cremades, H.; Nuevo, F. A.; Balmaceda, L.; Vásquez, A. M.

    2016-08-01

    Coronal dimmings are regions in the low corona characterized by depletions in the coronal EUV and X-ray intensity. Dimmings are usually related to the loss of plasma and magnetic fields asociated with the eruption of a Coronal Mass Ejection (CME). In this work we present a study of the temporal evolution for the mass loss of a dimming event observed in EUV wavelengths on 23 May 2010. The study of the mass loss was performed using EUV images obtained by the Atmospheric Imaging Assembly instrument on board the Solar Dynamics Observatory (AIA/SDO). For the estimation of the plasma electronic density in the low corona, we used a differential emission measure technique. On the other hand, we used coronographic data from the STEREO mission to estimate the temporal evolution of the mass for the asociated CME in white light. The obtained results show that the mass loss of the dimming represents 67.5 of the associated CME mass determined using white light data, which accounts for a considerable amount of the CME mass.

  18. Alcoholism and the Hispanic: A Mutual Concern = El Alcoholismo y Los Hispanos Una Preocupacion Nacional. Proceedings of the National Hispanic Conference on Alcoholism (San Antonio, Texas, September 7-10, 1981).

    ERIC Educational Resources Information Center

    AVANTE International Systems Corp., San Antonio, TX.

    Written in Spanish and English, the proceedings include 6 papers and the recommendations presented at the conference on alcoholism and alcohol-related problems among Hispanics attended by approximately 400 participants, representing 29 states, Puerto Rico, and Mexico. "The Challenge of the 1980's: Action Through Unity" discusses the need for unity…

  19. Writing Using Blogs: A Way to Engage Colombian Adolescents in Meaningful Communication (La escritura a través de bitácoras o "blogs": una forma de involucrar a adolescentes colombianos en comunicación significativa)

    ERIC Educational Resources Information Center

    Rojas Álvarez, Gloria

    2011-01-01

    We report an action research project developed with ninth grade students of a public school in Bogotá, Colombia, and which focused on innovating English communication through writing blogs. The project took into account the implementation of a specific blog that proposes activities, suggestions, strategies and links, among other things, to…

  20. Kathy Attends a Mother-to-Mother Support Group Meeting. Mother-to-Mother Support = Josefa Asiste a una Reunion de Grupo de Apoyo de Madre a Madre. Apoyo Madre a Madre.

    ERIC Educational Resources Information Center

    Magalhaes, Rebecca; Stone-Jimerez, Maryanne; Allen de Smith, Paulina; Smith, Natalia

    These magazine-sized booklets, one in English, one in Spanish, are in cartoon format and designed to be used by people with limited literacy in English or Spanish. This booklet explains what a mothers' support group is, and that mothers share experiences and information about breastfeeding, invite friends and relatives to attend, and is…

  1. Studiar L'inglese dalle elementari--Problema europeo: Una proposta nuova della pedagogia cibernetica (Beginning the Study of English in the Elementary School Grades--A European Problem: A New Proposal from Cibernetic Education).

    ERIC Educational Resources Information Center

    Chiti-Batelli, Andrea

    1986-01-01

    Warns the European community of the dangers of accepting English as the international language and urges the adoption of Esperanto, a neutral language without its own cultural tradition, as the international lingua franca. (CFM)

  2. Guiandose por la Intrincada Senda de la Educacion Especial: Una Guia para Padres y Maestros. Tercera Edicion. (Negotiating the Special Education Maze: A Guide for Parents & Teachers. Third Edition).

    ERIC Educational Resources Information Center

    Anderson, Winifred; Chitwood, Stephen; Hayden, Deidre

    Designed to assist Spanish-speaking parents and teachers in understanding special education procedures, this book describes the process for obtaining school services for children with disabilities. An introduction reviews six major provisions of the Individuals with Disabilities Education Act (IDEA) that relate to children's rights to a free,…

  3. Viajando por la Carretera de la Educacion Especial: Una Guia para los Padres para Tener un Viaje Feliz y Seguro (Traveling the Special Education Highway: A Parent's Guide to a Safe and Happy Journey).

    ERIC Educational Resources Information Center

    Santa Maria, Karen

    Designed for Spanish-speaking parents, this brochure, written in Spanish, uses a car-trip analogy to describe special education services for students with disabilities. It addresses: (1) child find; (2) initial evaluation and eligibility determination; (3) categories of students who receive special education services and related services; (4)…

  4. Hacia una pedagogia Co-emergente, Transaccional y Transcultural: El Cuento Ultracorto de Cienca Ficcion en Ingles (Towards a Co-emerging Transactional and Transcultural Pedagogy: The Science Fiction Short Short Story in English).

    ERIC Educational Resources Information Center

    Zoreda, Margaret Lee

    An outline of a "co-emergent" pedagogical perspective describes the conceptual framework for an advanced university-level English-as-a-Foreign-Language (EFL) course. The course framework, which involves choosing and studying a brief science fiction story, allows for transcultural encounters via a transactional literary approach in which the…

  5. Pautas para Organizar Una Actividad de Capacitacion: Un Seminario-Taller para el Desarrollo de Personal de Direccion de Sistemas Educativos (Guidelines to Organize a Training Activity: A Workshop for Management Development of Educational Systems).

    ERIC Educational Resources Information Center

    Valle, Victor M.

    Often personnel performing managerial functions within educational systems are educators with almost no training in management. This paper presents ideas on how to organize a training activity intended to develop management knowledge and skills among educational systems officials and to implement an organizational self-study on management…

  6. "Buddy System": A Pedagogical Innovation to Promote Online Interaction (Sistema de amigos: una innovación pedagógica para fomentar la interacción en línea)

    ERIC Educational Resources Information Center

    Espitia Cruz, Martha Isabel; Kwinta, Anna

    2013-01-01

    Recent technological development has created new pedagogical practices in the EFL classroom to maximize the time for students to use the language by considering online tools. Whilst working in a pedagogical context with new technologies, some educators were concerned with how online interaction in EFL content-based classes could be effectively…

  7. Bilinguismo e immigrazione: una nota sociolinguistica al piano europeo di mantenimento delle lingue nazionali nelle comunita di emigrati (Bilingualism and Immigration: A Sociolinguistic View of the European Plan for the Maintainance of National Languages in Immigrant Communities).

    ERIC Educational Resources Information Center

    Tosi, Arturo

    1979-01-01

    Outlines the European Economic Community's (EEC) plan for the maintainance of national languages among immigrants. Describes the variety of objectives behind the EEC's linguistic policy as incompatible with the creation of a unified instructional approach. Emphasizes that dialects spoken within immigrant families create additional problems in…

  8. La Implementacion de la Tecnologia en el Salon de Clases: Una guia para los que toman decisiones en las escuelas rurales (Putting Technology into the Classroom: A Guide for Rural Decision Makers).

    ERIC Educational Resources Information Center

    Boethel, Martha; Dimock, K. Victoria; Hatch, Lin; Adams, Sharon, Ed.; Heath, Marilyn, Ed.

    This guide is intended for superintendents and central office staff in small, rural school districts who are considering ways of using technology in the classroom. It provides information about why technology is worth the trouble and what it can accomplish, lays out the basic issues and tasks involved in integrating technology into classroom…

  9. El análisis de un estudio clínico indica que una combinación de fármacos puede ser de gran eficacia

    Cancer.gov

    El uso de un tratamiento farmacológico combinado para el cáncer de ovario recidivante mostró mejorías significativas, según se informó el día de hoy en el congreso anual de la Sociedad Americana de Oncología Clínica (ASCO). La combinación farmacológica se

  10. Desarrollo de una Interfaz de Control para un Observatorio Astronómico Robotizado con fines educativos en la Facultad de Ciencias Exactas; Físicas y Naturales de la UNSJ

    NASA Astrophysics Data System (ADS)

    Pogrebinsky, L.; Francile, C.

    We report the development and the construction of an Interface to Control a robotized Astronomical Observatory (ICOA), which allows to control the operation of an observatory based on a Meade LX200 telescope. The interface operates together with a computer to control and supervise all the local variables of the observatory, and can take the control of it in risky situations. It serves as a link among the control computer and all the necessary devices for the astronomical observation such as the telescope, the dome, the weather station, the CCD camera, the calibration devices and the security devices. The computer receives orders from an operator who can be or not at the site of observation. The goal of this robotized observatory is the operation in a secure, autonomous and unattended way, with the purpose of to be used remotely by the students of the "Facultad de Ciencias Exactas, Físicas y Naturales" of the UNSJ. FULL TEXT IN SPANISH

  11. Por Que Rosa No Es Valiente? Cuarto Modulo de una Serie para Maestros de Escuela Elemental (Why Isn't Rosie Brave? Fourth Module of a Series for Elementary School Teachers).

    ERIC Educational Resources Information Center

    Molina, Carmen Eneida, Ed.; And Others

    This guide in English and Spanish provides teachers with methods for identifying textbook bias and stereotyping. A pre-test and post-test designed to measure awareness of textbook stereotypes are included. Four object lessons discuss the function of repetition, cumulative effect, omission, and distortion in reinforcing stereotypes, especially…

  12. Dona Ana No Esta Aqui. Sexto Modulo de una Serie para Maestros de Escuela Elemental (Dona Ana Isn't Here. Sixth Module of a Series for Elementary School Teachers).

    ERIC Educational Resources Information Center

    Molina, Carmen Eneida, Ed.; And Others

    This guide in English and Spanish examines the roles assigned to women in social studies textbooks and the omission of women from history books. It analyzes the topics, textbooks, pictures, and narrations in use, and offers alternatives to these biased materials. A pre-test and post-test are included to measure the user's awareness of textbook…

  13. Towards Contextual Experimentation: Creating a Faculty Learning Community to Cultivate Writing-to-Learn Practices (Hacia una experimentación contextual: Creando comunidades de aprendizaje docente para el cultivo de prácticas de escritura para el aprendizaje)

    ERIC Educational Resources Information Center

    Chang, Mary K.; Rao, Kavita; Stewart, Maria L.; Farley, Cynthia A.; Li, Katherine

    2016-01-01

    In order to explore ways to integrate new pedagogical practices, five faculty members created an informal faculty learning community focused on writing-to-learn practices, an inquiry and process-based writing pedagogy. The faculty members learned the writing-to-learn practices together, periodically met to discuss how they implemented the…

  14. Jovenes con Discapacidades y Enfermedades Cronicas: Una Guia Introductoria para Joyenes y Padres. Revisiones de CYDLINE (Youth with Disabilities and Chronic Illnesses: An Introductory Guide for Youth and Parents. CYDLINE Reviews). Parents. CYDLINE Reviews.

    ERIC Educational Resources Information Center

    Minnesota Univ., Minneapolis. National Center for Youth with Disabilities.

    This bibliography covers a wide range of issues related to the needs of adolescents and young adults with chronic illnesses and disabilities and their families. For each item in the bibliography, information provided includes author, title, source, date, and abstract. Price information is given when available. Materials include books, audiotapes,…

  15. Validacion de una Version Espanola del Child Abuse Potential Inventory para Su Uso en Espana (Validation of a Spanish Version of the Child Abuse Potential Inventory in Use in Spain).

    ERIC Educational Resources Information Center

    De Paul, Joaquin; And Others

    1991-01-01

    A Spanish translation of the Child Abuse Potential Inventory was administrated to 66 perpetrators of child maltreatment and physical abuse and a demographically representative sample (n=829) of the general population of the Pais Vasco in Spain. The measure correctly identified 98.3 percent of the physical child abuse perpetrators. (Author/DB)

  16. Expresiones de Modalidad en una Situacion de Contacto: "Deber (De)" Vs. "Tener Que" en el Espanol Hablado en Houston (Expressions of Modals in a Contact Situation in the Spanish Spoken in Houston).

    ERIC Educational Resources Information Center

    Fairclough, Marta

    2000-01-01

    Examined an aspect of modality in the Spanish spoken in the Houston, Texas community. Demonstrates that semantic-pragmatic variation and change are taking place and affecting the forms of "deber (de) and "tener que" in their deontic and epistemic modes. Interviewed Mexicans and Mexican-Americans in Spanish. Analyses show an increased use of "tener…

  17. Vistazos Intimos De Puebla; Una Compilacion De Informes Individuales Preparados Por Los Participantes Del Instituto De Verano (NDEA) (Close-ups on Puebla; A Compilation of Individual Reports Prepared by the Participants of the NDEA Summer Institute).

    ERIC Educational Resources Information Center

    Wichita State Univ., KS.

    The individual and committee reports on the sociology of Puebla, Mexico, which are collected here, were written by participants in an NDEA Summer Institute program of the University of Wichita, Kansas. The underlying motives of the program, described in the preface, were to provide participants with real language experience and a chance to…

  18. Finding Family Balance: Establishing an Adult Relationship with the Person with a Disability (A Pamphlet for Families) [and] Equilibrio Familiar: Como Establecer una Relacion Adulta con la Persona con Impedimentos (Panfleto para la Familia).

    ERIC Educational Resources Information Center

    Baron, Carla

    Two booklets, in English and Spanish, are addressed to families of disabled adults and offer guidelines for establishing an adult relationship with the disabled individual within the family. Stressed are the importance of helping the disabled adult develop a positive self image, learning to truly listen to the adult as part of improving…

  19. Fields without Borders: An Anthology of Documentary Writing and Photography by Student Action with Farmworkers' Interns = Campos sin Fronteras: Una Antologia de Obras Escritas y Fotografia por Estudiantes Internos de Accion Estudiantil con Trabajadores Agricolas.

    ERIC Educational Resources Information Center

    Manly, Libby, Ed.; Okie, Alejandra, Ed.; Wiggins, Melinda, Ed.

    In this booklet, essays and poems, presented both in English and in Spanish, portray the feelings, conditions, and economic plight of migrant and seasonal farmworkers in North and South Carolina, often in their own words. A preface describes Student Action with Farmworkers summer internships in which college students spend 10 weeks working with…

  20. The Latinas' Guide to the Information Superhighway: A Bilingual Guide for Latinas by Latinas = Guia para Mujeres Latinas sobre la Supercarretera de la Informacion: Una Guia Bilingue para Latinas por medio de Latinas.

    ERIC Educational Resources Information Center

    MANA, A National Latina Organization, Washington, DC.

    This guide to the Internet is designed to give Latinas basic information on computers and the information superhighway. Written in both Spanish and English, the guide begins by defining the Internet and making some suggestions about acquiring access to a computer. Among the topics discussed are how to choose an Internet service provider, how to…

  1. Introduccion a la Evaluacion: Una introduccion practica a la evaluacion en proyectos para la ninez de temprana edad (Introducing Evaluation: A Practical Introduction to Evaluation in Early Childhood Projects).

    ERIC Educational Resources Information Center

    Eyken, Willem van der

    Developed for the staff of field projects, this booklet provides guidelines for evaluating projects to promote activities that will enhance the well-being of young children, their families, and their communities. The booklet aims to stimulate ideas and discussions, offers general principles to help in evaluation, and raises issues that encourage…

  2. Receta para el Exito. Una Guia Actualizada para Padres sobre el Mejoramiento de las Escuelas de Colorado y Logros Estudiantiles (Recipe for Success: An Updated Parents' Guide to Improving Colorado Schools and Student Achievement).

    ERIC Educational Resources Information Center

    Taher, Bonnie; Durr, Pamela

    This Spanish language guide describes ways that parents can help improve student achievement and school quality. It answers such questions as: how to choose the right early-education opportunity for a preschooler; how to make sure a 5-year-old is ready for school; how to help a daughter do well in school; how to work with a daughter's or son's…

  3. Fostering Intercultural Communicative Competence through Reading Authentic Literary Texts in an Advanced Colombian EFL Classroom: A Constructivist Perspective (Desarrollo de la competencia comunicativa intercultural mediante la lectura de textos literarios auténticos: una perspectiva constructivista)

    ERIC Educational Resources Information Center

    Gómez, Luis Fernando R.

    2012-01-01

    This article describes an action research experience carried out in an advanced English as a foreign language classroom of the language program at a university in Bogotá, Colombia, in 2010. The study proposes the inclusion of authentic literary texts in the English as a foreign language classroom through the implementation of four constructivist…

  4. Puerto Rican Psychology: A Review of Issues Pertaining to Assessment and Counseling = La Psicologia Puertorriquena: Una Revision de la Problematica Relacionada con la Medicion y la Consejeria. Monograph #135.

    ERIC Educational Resources Information Center

    Prewitt-Diaz, Joseph O., Ed.

    This is a collection of papers related to psychological assessment and counseling in Puerto Rico. Included are: (1) an introduction (in Spanish), by Joseph O. Prewitt-Diaz; (2) "A Procedure for Constructing Valid Cross-Cultural Attitude Measures for Use in Puerto Rico," by Cecil R. Trueblood; (3) "Perfil de Personalidad en el Adolescente…

  5. The Feasibility of Assessing Teenagers' Oral English Language Performance with a Rubric (La viabilidad de evaluar el desempeño oral de los adolescentes en inglés con una rúbrica)

    ERIC Educational Resources Information Center

    Pineda, Diana

    2014-01-01

    This article reports the experience of a study group in a public university in Colombia, formed mostly by academic coordinators who worked in the design of assessment rubrics. Its focus is on the experience of the academic coordinator of the English program for teenagers, who concentrated on implementing the rubric to assess the students' oral…

  6. Online Peer Feedback between Colombian and New Zealand FL Beginners: A Comparison and Lessons Learned (Retroalimentación virtual de pares entre aprendices principiantes de lengua de Colombia y Nueva Zelanda: una comparación y lecciones aprendidas)

    ERIC Educational Resources Information Center

    Tolosa, Constanza; Ordóñez, Claudia Lucía; Alfonso, Tania

    2015-01-01

    We report on an exploratory study comparing the performance as online tutors of two groups of beginner eleven-year-old students of English in Colombia and Spanish in New Zealand. The native speaker students of the foreign language the others were learning corrected paragraphs written by their peers. The feedback provided by each group of tutors…

  7. El Instituto de Nutrición de Centro América y Panamá: Servicios de Información Científica en Una Región en Vía de Desarrollo *

    PubMed Central

    Flores, Raquel; Corado, Adelina; Girón, Arturo

    1964-01-01

    Pioneering scientific information in underdeveloped areas poses several problems, such as (1) lack of understanding on the part of key functionaries as to the why, what, and when of information services; (2) lack of trained personnel to assume the responsibility for such services; (3) lack of economic resources; and (4) lack of information pertaining to available bibliographical sources in the particular area or region. The Bibliographic and Documentation Service of the Institute of Nutrition of Central America and Panama (INCAP) provides, in addition to the customary services, technical assistance for the organization or reorganization of biomedical libraries and makes INCAP library materials available to member countries, either by loan or photocopy. Although the program was designed for the member countries, INCAP tries to make its services available to other Latin American nations, Africa, and Asia, where similar nutritional problems are being studied. PMID:14119292

  8. La Provision de una Igualdad de Oportunidades Educativas para los Estudiantes con Conocimientos Limitados del Idioma Ingles (The Provision of an Equal Education Opportunity to Limited English Proficient Students).

    ERIC Educational Resources Information Center

    Office for Civil Rights (ED), Washington, DC.

    This federal policy statement outlines policy on provision of education to limited-English-speaking school children. First, it describes briefly the demographics of this population and the academic difficulties faced by them, and the recent federal initiative for broadened educational opportunity, America 2000: An Education Strategy. Then,…

  9. Teachers' Knowledge of Second Language and Curriculum: A Narrative Experience (Conocimiento de los profesores acerca de la segunda lengua y el currículo: una experiencia narrativa)

    ERIC Educational Resources Information Center

    Mendieta Aguilar, Jenny Alexandra

    2011-01-01

    This study was carried out with a group of three teachers who work for the foreign languages department of a private university in Colombia. It was aimed at unveiling and characterizing the narrative knowledge these teachers hold about language teaching and learning processes as well as the role this knowledge plays in the constant construction…

  10. The Kindergarten Survival Handbook: The Before School Checklist & a Guide for Parents. (El Manual de Como Sobrevivir El Jardin de Ninos: La Lista Pre-escolar y Una Guia Para Los Padres).

    ERIC Educational Resources Information Center

    Elovson, Allana Cummings

    Written to help parents understand what their children need to know before they start kindergarten, this volume, bound separately in English and Spanish, is intended to help parents become their children's best, as well as their first and most important, teachers. The first part of the book, the before school checklist, is divided into eight…

  11. Teacher Collaboration Praxis: Conflicts, Borders, and Ideologies from a Micropolitical Perspective (La práctica colaborativa entre docentes: conflictos, fronteras e ideologías desde una perspectiva micropolítica)

    ERIC Educational Resources Information Center

    Keranen, Nancy; Encinas Prudencio, Fátima

    2014-01-01

    This paper looks at a feature of teacher collaboration within Achinstein's (2002) micropolitics of collaboration but from an intrapersonal perspective. Results discussed feature issues of conflict, borders, and ideologies within each participating teacher rather than between teachers. Unresolved or unacknowledged intrapersonal conflict might lead…

  12. Contributions of a Social Justice Language Teacher Education Perspective to Professional Development Programs in Colombia (Contribuciones de una perspectiva de justicia social para la formación de docentes de lenguas a los programas de desarrollo profesional en Colombia)

    ERIC Educational Resources Information Center

    Sierra Piedrahita, Ana María

    2016-01-01

    In this article, the author discusses the social justice language teacher education perspective and how it can help language teachers to develop a political view of their work and effect change inside and outside their particular school contexts. To do this, she briefly analyzes various professional development programs for teachers of English in…

  13. Little Steps for New Parents: A Week-by-Week Guide and Journal for Baby's First Year = Pasitos para nuevos padres: Una guia y diario semanal para el primer ano del bebe.

    ERIC Educational Resources Information Center

    Briggs, Sandy

    Providing young infants with a loving and interesting environment through play will have a positive impact on their future. This book, designed for first time parents, provides simple and enjoyable activities intended to promote brain development during the first year. The book's introduction discusses the importance of the environment during the…

  14. Vinculos Entre la Capacitacion de Docentes y el Desarrollo de Materiales Educativos Impresos--Anotaciones para Una Discusion (Links between In-service Teacher Training and the Development of Printed Educational Aids).

    ERIC Educational Resources Information Center

    Valle, Victor M.

    Textbooks and other printed materials will be ever present, in the foreseeable future, as major aids for teaching and learning processes. New textbooks imply new guidelines for teachers, and the ways to handle such guidelines demand teacher training. This paper explains some links between inservice teacher training programs and the development of…

  15. La Desercion Escolar en los Niveles de Sexto y Noveno Grado: Una Comparacion Entre Zonas Rurales y Urbanas. Boletin 219 (The Educational Desertion in the 6th and 9th Grades: A Comparison Between Rural and Urban Zones. Bulletin 219).

    ERIC Educational Resources Information Center

    Lopez, Maria I. Hernandez; And Others

    In 1962 and again in 1965, a group of sixth and ninth grade students in selected schools in four Puerto Rican communities were interviewed to investigate the factors influencing students' decision to withdraw from school before completing twelfth grade and to identify some characteristics of dropouts. Of 616 students interviewed in 1962, 20.9% of…

  16. Reaching Higher. A Parent's Guide to the Washington Assessment of Learning. Revised = Para llegar mas arriba. Una guia para padres sobre la evaluacion del aprendizaje de los estudiantes del estado de Washington (Washington Assessment of Student Learning). Revisado.

    ERIC Educational Resources Information Center

    Washington Office of the State Superintendent of Public Instruction, Olympia.

    This guide in English and Spanish is designed to answer questions parents may have about the Washington Assessment of Student Learning (WASL), including how it will help improve their children's education, how it is scored, and how to use the information it provides. In Washington, clear educational goals for subject content, thinking skills, and…

  17. Task-Based Language Learning: Old Approach, New Style. A New Lesson to Learn (Aprendizaje basado en tareas: un antiguo enfoque, un nuevo estilo. Una nueva lección para aprender)

    ERIC Educational Resources Information Center

    Rodríguez-Bonces, Mónica; Rodríguez-Bonces, Jeisson

    2010-01-01

    This paper provides an overview of Task-Based Language Learning (TBL) and its use in the teaching and learning of foreign languages. It begins by defining the concept of TBL, followed by a presentation of its framework and implications, and finally, a lesson plan based on TBL. The article presents an additional stage to be considered when planning…

  18. "Una Communita" Poco Nota della Communicazione non Verbale: Come Communicano il Direttore e l'Orchestra (A Little Known "Community" of Nonverbal Communication: How the Conductor and Orchestra Communicate).

    ERIC Educational Resources Information Center

    Leonardi, Magda Farago

    1992-01-01

    Examines how conductors and orchestras communicate. Communication is essentially nonverbal. Conductors use gestures, gaze, facial expression, nods and posture to deliver their message. Norbert Weiner's Cybernetic Theory of human communication is seen as a means of analyzing precisely how this musical communication takes place. (16 references) (LET)

  19. Hacia la creacion de una filosofia latinoamericana. Un ensayo nacionalista: El perfil del hombre y la cultura en Mexico (Toward the Creation of a Latin American Philosophy. An Essay on Nationalism: A Profile of the Mexicans and Their Culture).

    ERIC Educational Resources Information Center

    Mendoza, Manuel

    An analysis of a Mexican essay by Samuel Ramos attempts to resolve the issue of whether or not there is a common philosophy in Latin America today. Manuel Mendoza concludes that no such philosophy exists, because the area has not had time to develop an internal character, and as a result, the intellectual and and philosophical concepts are based…

  20. Linguistica matematica, statistica linguistica e linguistica applicata. Una nota storica sui lessici di frequenza e l'educazione linguistica (Mathematical Linguistics, Linguistic Statistics, and Applied Linguistics. An Historical Note on Word Frequencies and Linguistic Education)

    ERIC Educational Resources Information Center

    Elia, Annibale

    1977-01-01

    This article traces the history of several themes in applied linguistics and to show the relationships between linguistic theory and the sciences concerned with the learning and teaching of languages. Interest in word frequency statistics is discussed in particular. (Text is in Italian.) (CFM)

  1. Una Ricerca sull'Applicazione del TALB (Test di Attitudine Linguistica per Bambini) nella Scola Elementare [Research on the Application of the TALB (A Test for Linguistic Aptitude for Children) in Elementary School].

    ERIC Educational Resources Information Center

    Acone, Ilario

    1992-01-01

    Discusses the administration of the Test di Attitudine Linguistica per Bambini (TALB) to students 7-9 years of age. Correlations between the TALB and achievement tests administered at the end of the course were very high. It is concluded that aptitude is a main factor in successful learning of a second language. (16 references) (LET)

  2. Methodology for producing 100 tons of fuel peat for a cement plant test burn. Metodologia para producir 100 toneladas de turba combustible para una prueba de quema en uns planta de cemento

    SciTech Connect

    Allen, A.B.; Malavassi, L.; Ramirez, O.; Thayer, G. , Plymouth, NC; RECOPE, San Jose; Los Alamos National Lab., NM )

    1989-05-01

    As a part of the Agency for International Development-funded cooperative project between Los Alamos and Costa Rica, the burning characteristics of Costa Rican peat were to be tested in an application. The cement plant owned by Industria National de Cemento in Cartago has a capability to handle solid fuel and was chosen for the burn demonstration. The Jungle No. 1 Peat Deposit near El Cairo was chosen as the site of the peat excavation. This peat production methodology study covers project site selection, installation of an access road and clearing of the jungle vegetation, removal of an upper layer of organic peat, excavation of fuel-grade peat, transport of the peat to the drying site, and drying and stockpiling of the finished product. As of this date the peat removal for the demonstration project has been started, and a description of the operation is included as an appendix to this paper. 10 figs.

  3. Un Nuevo Convenio para el Aprendizaje: Una Sociedad para Mejorar los Resultados Educativos en el Estado de Nueva York (A New Compact for Learning: A Partnership To Improve Educational Results in New York State).

    ERIC Educational Resources Information Center

    New York State Education Dept., Albany. Office of Elementary, Middle and Secondary Education.

    This Spanish translation of the abridged version of "A New Compact for Learning" acknowledges the current U.S. education system's inadequacy to educate U.S. citizenry and introduces New York State's New Compact for Learning, intended as a plan to reorganize New York's own system. The compact's fundamental principles are: (1) recognizing that all…

  4. Barriers, facilitators and preferences for the physical activity of school children. Rationale and methods of a mixed study

    PubMed Central

    2012-01-01

    Background Physical activity interventions in schools environment seem to have shown some effectiveness in the control of the current obesity epidemic in children. However the complexity of behaviors and the diversity of influences related to this problem suggest that we urgently need new lines of insight about how to support comprehensive population strategies of intervention. The aim of this study was to know the perceptions of the children from Cuenca, about their environmental barriers, facilitators and preferences for physical activity. Methods/Design We used a mixed-method design by combining two qualitative methods (analysis of individual drawings and focus groups) together with the quantitative measurement of physical activity through accelerometers, in a theoretical sample of 121 children aged 9 and 11 years of schools in the province of Cuenca, Spain. Conclusions Mixed-method study is an appropriate strategy to know the perceptions of children about barriers and facilitators for physical activity, using both qualitative methods for a deeply understanding of their points of view, and quantitative methods for triangulate the discourse of participants with empirical data. We consider that this is an innovative approach that could provide knowledges for the development of more effective interventions to prevent childhood overweight. PMID:22978490

  5. Spatial Characterization of Flood Magnitudes from Hurricane Irene (2011) over Delaware River Basin

    NASA Astrophysics Data System (ADS)

    Lu, P.; Smith, J. A.; Cunha, L.; Lin, N.

    2014-12-01

    Flooding from landfalling tropical cyclones can affect drainage networks over a large range of basin scales. We develop a method to characterize the spatial distribution of flood magnitudes continuously over a drainage network, with focus on flooding from landfalling tropical cyclones. We use hydrologic modeling to translate precipitation fields into a continuous representation of flood peaks over the drainage network. The CUENCAS model (Cunha 2012) is chosen because of its ability to predict flooding over various scales with minimal calibration. Taking advantage of scaling properties of flood magnitudes, a dimensionless flood index (Smith 1989, Villarini and Smith 2010) is obtained for a better representation of flood magnitudes for which the effects of basin scales are reduced. Case study analyses from Hurricane Irene are carried for the Delaware River using Stage IV radar rainfall fields. Reservoir regulation is implemented in CUENCAS since the Delaware River, like many large rivers, is strongly regulated. With limited info of dam operation and initial water level, reservoirs are represented as filters that directly reduce streamflow downstream, as a trade-off between efficiency and accuracy. Results show a correlation coefficient greater than 0.9 for all the available flood peak observations. Uncertainties are mostly from errors in rainfall fields for small watersheds, and reservoir regulation for large ones. The hydrological modeling can also be driven by simulated rainfall from historical or synthetic storms: this study fits into our long-term goal of developing a methodology to quantify the risk of inland flooding associated with landfalling tropical cyclone.

  6. Using environmental isotopes in the study of the recharge-discharge mechanisms of the Yarmouk catchment area in Jordan

    NASA Astrophysics Data System (ADS)

    Salameh, Elias

    altitude sont enrichies (δO18 = -5, δD = -23) et les eaux de la vallée très enrichies (δO18 -3.8, δD = -18). Les aquifers profonds dans la vallée de la Jordanie sont appauvris (δO18 -18 = -6, δD = -30) et se confondent avec les eaux des zones situées en altitude. En appliquant uniquement les isotopes environnementaux comme des outils de compréhension des phénomènes hydrogéologiques, la source des différentes masses d'eau souterraines, les mécanismes de la recharge et de la décharge pourraient être expliqués de manière ambiguë. Las fuentes de recarga, los mecanismos de flujo y las áreas de descarga de los diferentes cuerpos de agua subterránea que subyacen el área de la cuenca del Río Yarmouk en Jordania, se han explicado de manera no ambigua únicamente mediante la aplicación de los isótopos como herramienta. A lo largo de la parte Jordana del área de la cuenca del Río Yarmouk el agua subterránea emerge de diferentes acuíferos con una variedad de tipos y composiciones, ya sea que provengan del mismo acuífero o de diferentes acuíferos. Los mecanismos convencionales de recarga/descarga, balances hídricos y variaciones químicas no han podido explicar las variaciones químicas y los diferentes tipos de aguas. La aplicación de herramientas de isótopos ambientales combinadas con los efectos de altitud derivados de variaciones topográficas (250 hasta 1,300 m s.n.m. en una distancia de 20 km) y tomando en consideración los efectos de re-evaporación en el empobrecimiento de isótopos y enriquecimiento del agua de lluvia han ayudado fuertemente en el entendimiento de los mecanismos de recarga/descarga de los diferentes acuíferos. La precipitación en el área varía de 600 mm/año, a lo largo de las tierras altas, a 350 mm/año en el área del Valle Jordán. El flujo de agua subterránea ocurre de las tierras altas hacia el Valle Jordán. El agua subterránea de las tierras altas está empobrecida en isótopos (δO18 = -6, δD = -30), el agua

  7. Applicability and methodology of determining sustainable yield in groundwater systems

    NASA Astrophysics Data System (ADS)

    Kalf, Frans R. P.; Woolley, Donald R.

    2005-03-01

    una política de producción sostenible particularmente donde se aplican restricciones ecológicas. La derivación de producción sostenible utilizando principios de conservación de masa conduce a expresiones para producciones sostenibles en cuenca, minado parcial (no sostenible) y total (no sostenible) que pueden determinarse fácilmente utilizando métodos de modelos numéricos y seleccionados en base a restricciones aplicadas. En algunos casos tiene que reconocerse que el recurso de agua subterránea no es renovable y que por lo tanto su uso no puede ser sostenible. En estos casos su destino debe de ser el uso más equitativo.

  8. Interpretation of tracer tests performed in fractured rock of the Lange Bramke basin, Germany

    NASA Astrophysics Data System (ADS)

    Maloszewski, Piotr; Herrmann, Andreas; Zuber, Andrzej

    maximale de 225m), l'influence des fractures adjacentes a été négligée. Ce modèle a fourni pour chaque traceur pratiquement les mêmes paramètres pour la roche et le transport, ce qui signifie que l'approximation de la fracture unique est acceptable et que la diffusion dans la matrice joue un rôle important. La conductivité hydraulique de la zone de faille fournie par les traçages est d'environ 1,5×10-2m/s, alors que la conductivité hydraulique régionale de la roche fracturée dans son ensemble est de l'ordre de 3×10-7m/s, selon l'estimation tirée des âges tritium et de la porosité de la matrice d'environ 2%. Ces valeurs montrent que la conductivité hydraulique le long de la faille est supérieure de plusieurs ordres de grandeur à celle de la partie fracturée restante de l'aquifère, ce qui confirme le rôle prédominant joué par les zones de failles comme drains de l'eau et comme axes d'écoulement rapide. Resumen Dos ensayos con múltiples trazadores realizados en una de las zonas más fracturadas de la cuenca de Lange Bramke (Montes Harz, Alemania) confirman el papel dominante de la zona de fractura en el flujo de agua subterránea y el transporte de solutos. Trazadores con distintos coeficientes de difusión molecular (deuterio, bromuro, uranina y eosina) dieron curvas de llegada que sólo pueden ser explicadas mediante un modelo que acople el transporte advectivo-dispersivo en las fracturas con la difusión en la matriz. Para la escala de los ensayos (distancia máxima de 225m), se usó como aproximación que la influencia de las fracturas adyacentes podía despreciarse. Este modelo dio lugar para cada trazador a valores muy similares de los parámetros de transporte, lo que supone que la aproximación de fractura única es aceptable y que la difusión en la matriz es un mecanismo importante. La conductividad hidráulica de la zona fracturada obtenida de los ensayos es de unos 1.5×10-2m/s, mientras que la conductividad hidráulica regional para la

  9. Interpretation of tracer tests performed in fractured rock of the Lange Bramke basin, Germany

    NASA Astrophysics Data System (ADS)

    Maloszewski, Piotr; Herrmann, Andreas; Zuber, Andrzej

    maximale de 225m), l'influence des fractures adjacentes a été négligée. Ce modèle a fourni pour chaque traceur pratiquement les mêmes paramètres pour la roche et le transport, ce qui signifie que l'approximation de la fracture unique est acceptable et que la diffusion dans la matrice joue un rôle important. La conductivité hydraulique de la zone de faille fournie par les traçages est d'environ 1,5×10-2m/s, alors que la conductivité hydraulique régionale de la roche fracturée dans son ensemble est de l'ordre de 3×10-7m/s, selon l'estimation tirée des âges tritium et de la porosité de la matrice d'environ 2%. Ces valeurs montrent que la conductivité hydraulique le long de la faille est supérieure de plusieurs ordres de grandeur à celle de la partie fracturée restante de l'aquifère, ce qui confirme le rôle prédominant joué par les zones de failles comme drains de l'eau et comme axes d'écoulement rapide. Resumen Dos ensayos con múltiples trazadores realizados en una de las zonas más fracturadas de la cuenca de Lange Bramke (Montes Harz, Alemania) confirman el papel dominante de la zona de fractura en el flujo de agua subterránea y el transporte de solutos. Trazadores con distintos coeficientes de difusión molecular (deuterio, bromuro, uranina y eosina) dieron curvas de llegada que sólo pueden ser explicadas mediante un modelo que acople el transporte advectivo-dispersivo en las fracturas con la difusión en la matriz. Para la escala de los ensayos (distancia máxima de 225m), se usó como aproximación que la influencia de las fracturas adyacentes podía despreciarse. Este modelo dio lugar para cada trazador a valores muy similares de los parámetros de transporte, lo que supone que la aproximación de fractura única es aceptable y que la difusión en la matriz es un mecanismo importante. La conductividad hidráulica de la zona fracturada obtenida de los ensayos es de unos 1.5×10-2m/s, mientras que la conductividad hidráulica regional para la

  10. Neogene tectonic evolution and exhumation of the southern Ecuadorian Andes: a combined stratigraphy and fission-track approach

    NASA Astrophysics Data System (ADS)

    Steinmann, Michael; Hungerbühler, Dominik; Seward, Diane; Winkler, Wilfried

    1999-06-01

    Coastal marine and continental sedimentary facies of Middle to Late Miocene age are exposed in the Andes of southern Ecuador (Cuenca, Girón-Santa Isabel, Loja, Malacatos-Vilcabamba and Catamayo-Gonzanamá Basins). The chronostratigraphy of the basin series was established by zircon fission-track dating on a total of 120 tephra layers. Subsequently, the timing of tectonic events was estimated through the well-dated stratigraphic sequences and intervening unconformities. Sedimentation from ≈15 to 9 Ma (termed Pacific Coastal Stage) was dominantly of coastal marine type, extending over an area far greater than the present basin perimeters. It ended when a period of east-west-oriented compression at ≈9.5-8 Ma exhumed the region, and sedimentation was then restricted to smaller basins (termed Intermontane Stage). These Late Miocene continental sediments were for the first time sourced from the west in the rising Western Cordillera. Apatite fission-track analysis was applied to some of the tephras in the Cuenca Basin and also to the older (Eocene, 42-35 Ma) Quingeo Basin series in order to quantify the basin histories with respect to timing and amount of burial and later exhumation. In the Quingeo Basin burial of the oldest sediments reached temperatures of ˜100°C at 18 Ma, when they started to cool down during a period of exhumation. This process preceded the Pacific Coastal Stage development of the other basins. In the Cuenca Basin, the oldest sediments were buried to temperatures of ca. 120°C by 9 Ma, when a period of inversion began and a phase of erosion was dominant. This timing correlates well with that estimated from structural evidence. At ca. 6 Ma the cooling rate slowed down and maybe even reverted to a small increase in temperature until 3 Ma, when the final stages of exhumation took place. Assuming a geothermal gradient of 35°C/km, total uplift for this part for Ecuador is about 6100 m over the last 9 million years. Assuming a steady state

  11. New Crocodyliforms from Southwestern Europe and Definition of a Diverse Clade of European Late Cretaceous Basal Eusuchians.

    PubMed

    Narváez, Iván; Brochu, Christopher A; Escaso, Fernando; Pérez-García, Adán; Ortega, Francisco

    2015-01-01

    The late Campanian-early Maastrichtian site of Lo Hueco (Cuenca, Spain) has provided a set of well-preserved crocodyliform skull and lower jaw remains, which are described here and assigned to a new basal eusuchian taxon, Lohuecosuchus megadontos gen. et sp. nov. The reevaluation of a complete skull from the synchronous site of Fox-Amphoux (Department of Var, France) allows us to define a second species of this new genus. Phylogenetic analysis places Lohuecosuchus in a clade exclusively composed by European Late Cretaceous taxa. This new clade, defined here as Allodaposuchidae, is recognized as the sister group of Hylaeochampsidae, also comprised of European Cretaceous forms. Allodaposuchidae and Hylaeochampsidae are grouped in a clade identified as the sister group of Crocodylia, the only crocodyliform lineage that reaches our days. Allodaposuchidae shows a vicariant distribution pattern in the European Late Cretaceous archipelago, with several Ibero-Armorican forms more closely related to each other than with to Romanian Allodaposuchus precedens. PMID:26535893

  12. New Crocodyliforms from Southwestern Europe and Definition of a Diverse Clade of European Late Cretaceous Basal Eusuchians

    PubMed Central

    Narváez, Iván; Brochu, Christopher A.; Escaso, Fernando; Pérez-García, Adán; Ortega, Francisco

    2015-01-01

    The late Campanian-early Maastrichtian site of Lo Hueco (Cuenca, Spain) has provided a set of well-preserved crocodyliform skull and lower jaw remains, which are described here and assigned to a new basal eusuchian taxon, Lohuecosuchus megadontos gen. et sp. nov. The reevaluation of a complete skull from the synchronous site of Fox-Amphoux (Department of Var, France) allows us to define a second species of this new genus. Phylogenetic analysis places Lohuecosuchus in a clade exclusively composed by European Late Cretaceous taxa. This new clade, defined here as Allodaposuchidae, is recognized as the sister group of Hylaeochampsidae, also comprised of European Cretaceous forms. Allodaposuchidae and Hylaeochampsidae are grouped in a clade identified as the sister group of Crocodylia, the only crocodyliform lineage that reaches our days. Allodaposuchidae shows a vicariant distribution pattern in the European Late Cretaceous archipelago, with several Ibero-Armorican forms more closely related to each other than with to Romanian Allodaposuchus precedens. PMID:26535893

  13. [New model of accumulation and agro-business: the ecological and epidemiological implications of the Ecuadorian cut flower production].

    PubMed

    Breilh, Jaime

    2007-01-01

    The article refers to the results of an integrative research project that aim to analyze ecosystem and human health's impacts of cut flower production in Cuencas del Rio Grande region (Cayambe and Tabacundo zones). In order to assess the complex object of study and its multiple dimensions, an interdisciplinary approach has been constructed, based on the following components: a) pesticides dynamics analysis; b) pesticides distribution and commercialization processes in the region; c) economic and anthropological transformation determinate by the flower production; d) epidemiological process of human health impacts; e) and the design of participatory, multicultural and integrative information. The research consolidated an important geo-codified data base on the impacts of cut flower production to workers, communities, aquatic systems and soils, offering evidences of the actual flower production system severe impacts and leading to a reflection about the sustainability of the productive systems and the future of the ecosystems.

  14. Comparing peasants' perceptions of precipitation change with precipitation records in the tropical Callejón de Huaylas, Peru

    NASA Astrophysics Data System (ADS)

    Gurgiser, Wolfgang; Juen, Irmgard; Singer, Katrin; Neuburger, Martina; Schauwecker, Simone; Hofer, Marlis; Kaser, Georg

    2016-05-01

    Pronounced hygric seasonality determines the regional climate and, thus, the characteristics of rain-fed agriculture in the Peruvian Callejón de Huaylas (Cordillera Blanca). Peasants in the Cuenca Auqui on the eastern slopes above the city of Huaraz attribute recently experienced challenges in agricultural production mainly to perceived changes in precipitation patterns. Statistical analyses of daily precipitation records at nearby Recuay (1964 to 2013) and Huaraz (1996 to 2013) stations do not corroborate the perceived changes. Either insufficient temporal resolution of available precipitation records or other environmental and sociopolitical factors impacting traditional farming methods may be the reason for the lack of concordance between the two information sources investigated in this study.

  15. Comparing peasants' perceptions of precipitation change with precipitation records in the tropical Callejón de Huaylas, Peru

    NASA Astrophysics Data System (ADS)

    Gurgiser, W.; Juen, I.; Singer, K.; Neuburger, M.; Schauwecker, S.; Hofer, M.; Kaser, G.

    2015-10-01

    Pronounced hygric seasonality determines the regional climate and, thus, the characteristics of rain-fed agriculture in the Peruvian Callejón de Huaylas (Cordillera Blanca). Peasants in the Cuenca Auqui on the eastern slopes above the city of Huaraz attribute recently experienced challenges in agricultural production mainly to perceived changes in precipitation patterns. Statistical analyses of daily precipitation records at nearby Recuay (1964 to 2013) and Huaraz (1996 to 2013) stations do not corroborate the perceived changes. Either insufficient temporal resolution of available precipitation records or other environmental and sociopolitical factors impacting traditional farming methods may be the reason for the lack of concordance between the two information sources investigated in this study.

  16. Prevalence and Antimicrobial Resistance of Vibrio spp. in Retail and Farm Shrimps in Ecuador.

    PubMed

    Sperling, L; Alter, T; Huehn, S

    2015-11-01

    The aim of this study was to investigate the prevalence of Vibrio spp. in shrimp at retail and in shrimp farms in Ecuador and to determine the antimicrobial agent resistance patterns of farm isolates. The presence of genes linked to early mortality syndrome (EMS) or acute hepatopancreatic necrosis disease (AHPND) also was evaluated. Vibrio spp. were isolated from retail shrimps in Cuenca, Ecuador, and farm shrimps originating from provinces El Oro and Guayas, Ecuador. A total of 229 shrimp samples were collected, of which 71 originated from retail markets in Cuenca and 158 came from shrimp farms. Overall, 219 (95.6%) samples tested positive for Vibrio spp. Vibrio parahaemolyticus (80.8%) was the most common species detected, followed by Vibrio alginolyticus (50.2%), Vibrio cholerae (11.3%), and Vibrio vulnificus (3.5%). None of the V. parahaemolyticus isolates carried the virulence-associated tdh and trh genes. In V. parahaemolyticus shrimp farm isolates, high resistance was found to ampicillin (92.2%), and intermediate resistance was found to tetracycline (51.3%) and amikacin (22.1%). Of the V. parahaemolyticus strains, 68 were resistant to at least three antimicrobial agents, and 2 were resistant to seven antimicrobial agents simultaneously. Up to 18 resistant isolates were found for V. alginolyticus, whereas V. vulnificus and V. cholerae isolates were more susceptible. None of the V. parahaemolyticus isolates carried the EMS-AHPND plasmid. The results of this study revealed the ubiquitous occurrence of Vibrio spp. in shrimps at retail and on shrimp farms in Ecuador.

  17. Community embedded reproductive health interventions for adolescents in Latin America: development and evaluation of a complex multi-centre intervention

    PubMed Central

    2013-01-01

    Background Adolescents in Latin America are at high risk for unwanted and unplanned pregnancies, which often result in unsafe abortions or poor maternal health outcomes. Both young men and women in the region face an increased risk of sexually transmitted infections due to inadequate sexual and reproductive health information, services and counselling. To date, many adolescent health programmes have targeted a single determinant of sexual and reproductive health. However, recent evidence suggests that the complexity of sexual and reproductive health issues demands an equally multi-layered and comprehensive approach. Methods This article describes the development, implementation and evaluation design of the community-embedded reproductive health care for adolescents (CERCA) study in three Latin American cities: Cochabamba (Bolivia), Cuenca (Ecuador) and Managua (Nicaragua). Project CERCA’s research methodology builds on existing methodological frameworks, namely: action research, community based participatory research and intervention-mapping. The interventions in each country address distinct target groups (adolescents, parents, local authorities and health providers) and seek improvement of the following sexual health behaviours: communication about sexuality, sexual and reproductive health information-seeking, access to sexual and reproductive health care and safe sexual relationships. In Managua, we implemented a randomised controlled study, and in Cochabamba and Cuenca we adopted a non-randomised controlled study to evaluate the effectiveness of Project CERCA interventions, in addition to a process evaluation. Discussion This research will result in a methodological framework that will contribute to the improved design and implementation of future adolescent sexual and reproductive health interventions. Trial registration ClinicalTrials.gov (NCT01722084) PMID:23311647

  18. Trajes espaciales

    NASA Video Gallery

    Un traje espacial es mucho más que un conjunto de prendas que los astronautas usan en los paseos espaciales. En realidad, un traje espacial totalmente equipado es una nave para una persona, formada...

  19. A Guide for Parents and Families about What Your 11th Grader Should Be Learning in School This Year. Don't Fail Your Children = Una Guia para los Padres y Familias Acerca de Lo Que Su Hijo de Grado 11 Debe Aprender en la Escuela Este Ano. No Le Falle a Sus Hijos.

    ERIC Educational Resources Information Center

    South Carolina State Dept. of Education, Columbia.

    This guide, in English- and Spanish-language versions, shares with parents information about the South Carolina Curriculum Standards. The standards outline state requirements for children's learning and what students across the state should be able to do in certain subjects. The guide lists seven key reasons parents should be aware of the new…

  20. A Guide for Parents and Families about What Your 2nd Grader Should Be Learning in School This Year. Don't Fail Your Children = Una Guia para los Padres y Familias Acerca de Lo Que Su Hijo de 2do Grado Debe Aprender en la Escuela Este Ano. No Le Falle a Sus Hijos.

    ERIC Educational Resources Information Center

    South Carolina State Dept. of Education, Columbia.

    This guide, in English- and Spanish-language versions, shares with parents information about the South Carolina Curriculum Standards. The standards outline state requirements for children's learning and what students across the state should be able to do in certain subjects. The guide lists seven key reasons parents should be aware of the new…

  1. A Guide for Parents and Families about What Your 1st Grader Should Be Learning in School This Year. Don't Fail Your Children = Una Guia para los Padres y Familias Acerca de Lo Que Su Hijo de 1er Grado Debe Aprender en la Escuela Este Ano. No Le Falle a Sus Hijos.

    ERIC Educational Resources Information Center

    South Carolina State Dept. of Education, Columbia.

    This guide, in English- and Spanish-language versions, shares with parents information about the South Carolina Curriculum Standards. The standards outline state requirements for children's learning and what students across the state should be able to do in certain subjects. The guide lists seven key reasons parents should be aware of the new…

  2. A Guide for Parents and Families about What Your 6th Grader Should Be Learning in School This Year. Don't Fail Your Children = Una Guia para los Padres y Familias Acerca de Lo Que Su Hijo de 6to Grado Debe Aprender en la Escuela Este Ano. No Le Falle a Sus Hijos.

    ERIC Educational Resources Information Center

    South Carolina State Dept. of Education, Columbia.

    This guide, in English- and Spanish-language versions, shares with parents information about the South Carolina Curriculum Standards. The standards outline state requirements for children's learning and what students across the state should be able to do in certain subjects. The guide lists seven key reasons parents should be aware of the new…

  3. A Guide for Parents and Families about What Your 7th Grader Should Be Learning in School This Year. Don't Fail Your Children = Una Guia para los Padres y Familias Acerca de Lo Que Su Hijo de Septimo Grado Debe Aprender en la Escuela Este Ano. No Le Falle a Sus Hijos.

    ERIC Educational Resources Information Center

    South Carolina State Dept. of Education, Columbia.

    This guide, in English- and Spanish-language versions, shares with parents information about the South Carolina Curriculum Standards. The standards outline state requirements for children's learning and what students across the state should be able to do in certain subjects. The guide lists seven key reasons parents should be aware of the new…

  4. A Guide for Parents and Families about What Your 5th Grader Should Be Learning in School This Year. Don't Fail Your Children = Una Guia para los Padres y Familias Acerca de Lo Que Su Hijo de 5to Grado Debe Aprender en la Escuela Este Ano. No Le Falle a Sus Hijos.

    ERIC Educational Resources Information Center

    South Carolina State Dept. of Education, Columbia.

    This guide, in English- and Spanish-language versions, shares with parents information about the South Carolina Curriculum Standards. The standards outline state requirements for children's learning and what students across the state should be able to do in certain subjects. The guide lists seven key reasons parents should be aware of the new…

  5. A Guide for Parents and Families about What Your 9th Grader Should Be Learning in School This Year. Don't Fail Your Children = Una Guia para los Padres y Familias Acerca de Lo Que Su Hijo de Noveno Grado Debe Aprender en la Escuela Este Ano. No Le Falle a Sus Hijos.

    ERIC Educational Resources Information Center

    South Carolina State Dept. of Education, Columbia.

    This guide, in English- and Spanish-language versions, shares with parents information about the South Carolina Curriculum Standards. The standards outline state requirements for children's learning and what students across the state should be able to do in certain subjects. The guide lists seven key reasons parents should be aware of the new…

  6. A Guide for Parents and Families about What Your 4th Grader Should Be Learning in School This Year. Don't Fail Your Children = Una Guia para los Padres y Familias Acerca de Lo Que Su Hijo de 4to Grado Debe Aprender en la Escuela Este Ano. No Le Falle a Sus Hijos.

    ERIC Educational Resources Information Center

    South Carolina State Dept. of Education, Columbia.

    This guide, in English- and Spanish-language versions, shares with parents information about the South Carolina Curriculum Standards. The standards outline state requirements for children's learning and what students across the state should be able to do in certain subjects. The guide lists seven key reasons parents should be aware of the new…

  7. A Guide for Parents and Families about What Your 3rd Grader Should Be Learning in School This Year. Don't Fail Your Children = Una Guia para los Padres y Familias Acerca de Lo Que Su Hijo de 3er Grado Debe Aprender en la Escuela Este Ano. No Le Falle a Sus Hijos.

    ERIC Educational Resources Information Center

    South Carolina State Dept. of Education, Columbia.

    This guide, in English- and Spanish-language versions, shares with parents information about the South Carolina Curriculum Standards. The standards outline state requirements for children's learning and what students across the state should be able to do in certain subjects. The guide lists seven key reasons parents should be aware of the new…

  8. A Guide for Parents and Families about What Your 8th Grader Should Be Learning in School This Year. Don't Fail Your Children = Una Guia para los Padres y Familias Acerca de Lo Que Su Hijo de Octavo Grado Debe Aprender en la Escuela Este Ano. No Le Falle a Sus Hijos.

    ERIC Educational Resources Information Center

    South Carolina State Dept. of Education, Columbia.

    This guide, in English- and Spanish-language versions, shares with parents information about the South Carolina Curriculum Standards. The standards outline state requirements for children's learning and what students across the state should be able to do in certain subjects. The guide lists seven key reasons parents should be aware of the new…

  9. A Guide for Parents and Families about What Your 12th Grader Should Be Learning in School This Year. Don't Fail Your Children = Una Guia para los Padres y Familias Acerca de Lo Que Su Hijo de Grado 12 Debe Aprender en la Escuela Este Ano. No Le Falle a Sus Hijos.

    ERIC Educational Resources Information Center

    South Carolina State Education Oversight Committee, Columbia.

    This guide, in English- and Spanish-language versions, shares with parents information about the South Carolina Curriculum Standards. The standards outline state requirements for children's learning and what students across the state should be able to do in certain subjects. The guide lists seven key reasons parents should be aware of the new…

  10. A Guide for Parents and Families about What Your 10th Grader Should Be Learning in School This Year. Don't Fail Your Children = Una Guia para los Padres y Familias Acerca de Lo Que Su Hijo de Decimo Grado Debe Aprender en la Escuela Este Ano. No Le Falle a Sus Hijos.

    ERIC Educational Resources Information Center

    South Carolina State Education Oversight Committee, Columbia.

    This guide, in English- and Spanish-language versions, shares with parents information about the South Carolina Curriculum Standards. The standards outline state requirements for children's learning and what students across the state should be able to do in certain subjects. The guide lists seven key reasons parents should be aware of the new…

  11. A Guide for Parents and Families about What Your Kindergartner Should Be Learning in School This Year. Don't Fail Your Children = Una Guia para los Padres y Familias Acerca de Lo Que Su Hijo de Jardin Infantil (Kindergarten) Debe Aprender en la Escuela Este Ano. No Le Falle a Sus Hijos.

    ERIC Educational Resources Information Center

    South Carolina State Dept. of Education, Columbia.

    This guide, in English- and Spanish-language versions, shares with parents information about the South Carolina Curriculum Standards. The standards outline state requirements for children's learning and what students across the state should be able to do in certain subjects. The guide lists seven key reasons parents should be aware of the new…

  12. Narrative Research into the Possibilities of Classroom-Generated Stories in English Teacher Education (Una investigación narrativa en torno a las posibilidades de los relatos realizados en clase en la formación del profesorado de inglés)

    ERIC Educational Resources Information Center

    Sarasa, María Cristina

    2015-01-01

    This paper summarizes a narrative inquiry carried out with forty volunteer undergraduate participants attending the course Overall Communication, in the English Teacher Education Program in the School of Humanities of the "Universidad Nacional de Mar del Plata," Argentina. It addresses their family/academic identities and personal…

  13. Educacion Bilingue: Una Declaraccion del Plan y Accion que Proponen los Regentes de la Universidad del Estado de Nueva York. Bilingual Education: A Statement of Policy and Proposed Action by the Regents of the University of the State of New York. Position Paper No. 16.

    ERIC Educational Resources Information Center

    New York State Education Dept., Albany.

    Large numbers of Puerto Rican and other non-English-speaking students live in school districts throughout New York State. To enable these students to function in an English-speaking society while retaining their own culture, a policy to promote bilingual program planning was established by the Board of Regents of New York State in 1972. In this…

  14. Autobiographies: A Way to Explore Student-Teachers' Beliefs in a Teacher Education Program (Autobiografías: una forma de explorar las creencias de docentes en formación en un programa de Licenciatura en Inglés)

    ERIC Educational Resources Information Center

    Durán Narváez, Norma Constanza; Lastra Ramírez, Sandra Patricia; Morales Vasco, Adriana María

    2013-01-01

    Autobiographies depict with words life stories, personal experiences, and perceptions that allow researchers to deeply understand the way people see life, reflect, and construct meaning out of experiences. This article aims at describing the contributions of autobiographies as valuable resources in qualitative research when exploring people's…

  15. Experiencias interculturales y la pedagogia de la anglofonia en la ensenanza de ingles como lengua extranjera (EILE) desde una perspectiva deweyana. Working Paper (A Deweyan Perspective on Cross-Cultural Experiences and Anglophone Pedagogy in the Teaching of English as a Foreign Language. Working Paper).

    ERIC Educational Resources Information Center

    Zoreda, Margaret Lee

    This paper discusses a framework for teaching English as a foreign language that incorporates significant cultural content and fosters critical encounters with Anglophone culture. It reviews relevant contemporary perspectives for understanding cross-cultural processes within the foreign language teaching environment with emphasis on the issue of…

  16. Self-Programmed Counseling and Self-Programmed Control Manual. A Guide to Self-Image Development with Emphasis on the Chicano Student. Student's Guide = Manual de Sistema de Consejo Auto Programado y Control Auto Programado. Una Guia Para el Desarrollo de La Imagen Propia Con un Enfasis en el Estudiante Chicano.

    ERIC Educational Resources Information Center

    Mireles, S. Raymond

    Self-Programmed Counseling, the instructor's guidance, and Self-Programmed Control (SPC), the student's response, was initially developed by Title III Project USTED (United Students and Teachers for Educational Development) for Mexican American college students on academic probation to use on a non-credit, special group counseling basis. As part…

  17. Comparing Teaching Styles and Personality Types of EFL Instructors in the Public and Private Sectors (Una comparación de los estilos de enseñanza y los tipos de personalidad de profesores de inglés de los sistemas educativos estatal y privado)

    ERIC Educational Resources Information Center

    Diaz Larenas, Claudio H.; Rodriguez Moran, Andrea Victoria; Poblete Rivera, Karen Jocelyn

    2011-01-01

    This is an exploratory non-experimental research study whose main objective is to compare the teaching styles of a group of thirty teachers of English working in either public or private secondary education in Chile. In order to collect the required data, two instruments were administered to the participants: a teaching style inventory and a…

  18. Human Relations Activities for the Single Parent To Develop More Effective Parent/Child Relations. Bilingual Guide = Actividades sobre relaciones humanas para ayudar al padre-soltero o madre-soltera a desarrollar una relacion efectiva entre padre e hijo Guia bilingue.

    ERIC Educational Resources Information Center

    Peterson, Susan

    Written in English and Spanish, this bilingual guide offers 10 activities which single parents can use to improve their relationships with their children. Objectives of activities include: (1) developing children's responsibility for work tasks in the home; (2) improving sibling relationships; (3) discussing emergencies with children; (4)…

  19. Auxilio, Socorro! Salvame! Los Esterioripos de la Mujer en la Television. Octavo Modulo de una Serie para Maestros de Escuela Elemental. Fara Usar con la Grabacion (Help! Help! Save me! Sexual Stereotyping of Women. Eighth Module of a Series for Elementary School Teachers. Audiotape Transcriptions).

    ERIC Educational Resources Information Center

    Garcia Ramis, Magali, Ed.; And Others

    This guide in English and Spanish provides information for teachers concerning the roles assigned to women in television, and the stereotypes on which these roles are based. The guide contains a pre-test and a post-test to measure the user's awareness of sexual stereotyping. Four object lessons examine: (1) the traditional role of women on…

  20. EFL Teenagers' Social Identity Representation in a Virtual Learning Community on Facebook (Representación de la identidad social de los estudiantes adolescentes de inglés como lengua extranjera en una comunidad de aprendizaje virtual en Facebook)

    ERIC Educational Resources Information Center

    Jiménez Guamán, Laura Verónica

    2012-01-01

    In this article I report the findings of a descriptive and interpretative qualitative study carried out in a public school in Bogotá, Colombia. The study aimed at analyzing, describing and exploring teenage students' social identity representation as observed in their participation in a learning community on Facebook. Data were collected from…

  1. Skype™ Conference Calls: A Way to Promote Speaking Skills in the Teaching and Learning of English (Llamadas para conferencia en Skype™: una forma de promover la habilidad de habla en la enseñanza y aprendizaje del inglés)

    ERIC Educational Resources Information Center

    Romaña Correa, Yeferson

    2015-01-01

    This article presents the results of a research project on the teaching and learning of English through the use of Skype™ conference calls. The research was carried out with a group of 12 English as a foreign language adult learners in the language institute of Universidad Distrital Francisco José de Caldas, Bogotá, Colombia. The findings of this…

  2. La Realidad de la Adquisicion del Lenguaje Oral y Escrito en una Muestra de Escuelas del Sector sur de Santiago. [The Reality of the Acquisition of Oral and Written Language in a Sample of Schools in the Southern Part of Santiago.

    ERIC Educational Resources Information Center

    Oyarce, Carmen Diaz; Mujica, Elena Alvarez-Salamanca

    2001-01-01

    Investigated reading and writing skills of socioeconomically deprived first graders in Santiago, Chile. Found that the children had low achievement in reading and writing and at the end of the school year had not acquired sufficient linguistic competence to successfully master these skills. Also found a dissociation between observed practice and…

  3. Oxygen uptake of overweight and obese children at different stages of a progressive treadmill test: Consumo de oxígeno de niños y niñas con sobrepeso y obesos en los diferentes estadios de una prueba progresiva en un tapiz rodante.

    PubMed

    Meléndez-Ortega, Agustín; Lucy Davis, Catherine; Barbeau, Paule; Boyle, Colleen Ann

    2010-01-01

    INTRODUCTION: Maximal oxygen uptake (VO2 max) is associated with cardiovascular and metabolic risks but it is difficult to assess in obese children. The objective of this study was to develop an equation to estimate VO2 (mL/kg/min) and to check the % of tests that were maximal according to recommended criteria. METHODS: Stress tests were analyzed of 222 subjects (94 male and 128 female with a BMI above the 85 percentile for age and sex), and repeated 4 months later. Mean age was 9.4 ± 1.1 years and weighed 52.4 ± 13.3 kg. Body fat % (40.5 + 6.2) was determined by DXA (Hologic QDR 4500W). The protocol on the treadmill started with a warm up at 2.5 and 3 mph with a slope of 0% and 2%. The speed was kept at 3 mph for all the stages and the slope was increased 2% every 2 minutes. Statistical analysis (descriptive, t-test and ANOVAS 2×2×2) was done with SPSS 15.0. RESULTS: Only 35% of the tests were maximal. The equation calculates was Y = 2.6x + 22.3 (x = protocol stage). Data pre and post treatment were not statistically different DISCUSSION: Increments in VO2 were consistent despite subject diversity (sex, % body fat, physical fitness, treatment). CONCLUSION: To be able to estimate VO2 at the different stages of the test without complex equipment or specialized staff, will facilitate the performance of stress tests on a daily basis.

  4. Educacion Bilingue: Una Declaracion del Plan y Accion que Proponen los Regentes de la Universidad del Estado de Nueva York (Bilingual Education: A Statement of Policy and Proposed Action by the Regents of the University of the State of New York.)

    ERIC Educational Resources Information Center

    New York State Education Dept., Albany.

    The primary goal of the Regents in their bilingual education program is to provide equal educational opportunity for non-English-speaking children through activities capitalizing on their proficiency in their native language and developing competency in English. Two complementary goals are inherent: (1) a vitally needed national resource, the…

  5. Astronomy, Art and Mythology in a Public Elementary School in Itaocara/rj. (Spanish Title: Astronomía, Arte y Mitologia en el Ensino Fundamental en Una Escuela de la Red Estatal en ITAOCARA/RJ.) Astronomia, Arte e Mitologia no Ensino Fundamental em Escola da Rede Estadual em ITAOCARA/RJ

    NASA Astrophysics Data System (ADS)

    Oliveira Bernardes, Adriana; Ramos dos Santos, Arleidimar

    2008-12-01

    Volunteer advisors at Itaocara Astronomy Club Marcos Pontes(CAIMP), in their majority high school students, introduced students at Teotônio Brandão Vilela Elementary School to basic concepts in Astronomy, Physics, and Mythology. Computer Science, Arts, puppetry, and educational videos were used to stimulate students to share their feelings and test their knowledge of the concepts presented. The work done by the volunteers helped boost the student's self-esteem and improved their oral skills by applying their knowledge of Physics and Astronomy in Lab experiments. The main goals of the CAIMP are the possibility of including astronomy in Elementary school curricula and developing an interdisciplinary work involving Astronomy, Arts, and Mythology. Through tests and reports, the students who participated in the Brazilian Astronomy Olympics, showed an increase in their knowldge of the sujects presented during the volunteer work. Durante el curso de un trabajo voluntario con estudiantes de nivel primario (1 º a 4 º grado), los guías de Astronomía miembros del CAIMP (Club de Astronomía de Itaocara "Marcos Puentes"), en su mayoría estudiantes secundarios, desarrollaron un trabajo de introducción a las Ciencias y Astronomía con alumnos del colegio estatal Teotônio Vilela Brandão. A través de talleres de informática, artes, videos educativos y teatro de títeres, los estudiantes pudieron expresar sus conocimientos y emociones frente a las leyendas mitológicas con las que se inició el trabajo de introducción. La labor desarrollada por los guías con los alumnos promovió la integración entre las aulas del colegio haciéndolos participar en actividades con el fin de estimular su expresión verbal y aumentar su autoestima. Trabajando diversas formas de expresión, los alumnos pudieron realizar experimentos y conocer algunos conceptos de Física y Astronomía al mismo tiempo que adquirían autonomía para la libre expresión de sus sentimientos y de los conocimientos recibidos. El trabajo en sí ha mostrado además de la posibilidad de la inclusión de la Astronomía en la Educación Primaria, la posibilidad de un trabajo interdisciplinario en los niveles iniciales incluyendo Astronomía, Arte y Mitología. Los resultados presentados por los estudiantes en las Olimpiadas promovidas en la escuela y por la OBA (Olimpiada Brasilera de Astronomía) permitieron verificar un creciente aprendizaje y estimulo hacia las materias científicas, comprobados por la apropiada expresión de los conceptos adquiridos de astronomía y presentados en evaluaciones o en informes obtenidos de ellos mismos, sus familias y profesores. Desenvolvendo um trabalho voluntário junto aos alunos do ensino fundamental no 1º ciclo (1ª a 4ª série), os monitores de Astronomia membros do CAIMP (Clube de Astronomia de Itaocara Marcos Pontes), que eram em sua maioria alunos do ensino médio, desenvolveram um trabalho de aproximação entre os alunos do Colégio Estadual Teotônio Brandão Vilela e os temas envolvendo Ciências e Astronomia. Através de oficinas de informática, artes, vídeos educativos e teatros de fantoches, os alunos puderam expressar seus conhecimentos e emoções diante das lendas mitológicas com as quais começaram a ter contato. O trabalho desenvolvido pelos monitores junto aos alunos proporcionou a integração entre as turmas do colégio e os levou a participação em atividades de maneira a estimular sua oralidade e aumentar sua auto-estima. Trabalhando várias formas de expressões, os alunos puderam realizar seus experimentos e conhecer alguns conceitos de Física e Astronomia, enquanto adquiriam autonomia para se expressarem de acordo com seus sentimentos e conhecimentos adquiridos. O trabalho em si mostrou além da possibilidade de inserção de Astronomia no Ensino Fundamental, a possibilidade de realização de um trabalho interdisciplinar nas séries iniciais envolvendo Astronomia, Arte e Mitologia. Os resultados apresentados pelos alunos nas Olimpíadas promovidas na escola e pela OBA (Olimpíada Brasileir

  6. Teaching English through Stories: A Meaningful and Fun Way for Children to Learn the Language (La enseñanza del inglés a través de historias: una forma divertida y significativa para que los niños aprendan el idioma)

    ERIC Educational Resources Information Center

    Porras González, Nohora Inés

    2010-01-01

    This article presents the results of a study on utilizing stories for teaching English as a foreign language to children in first, second and third grades. It was carried out in a Colombian public elementary school in Bucaramanga, Colombia. The proposal was initiated by a group of student-teachers at Universidad Cooperativa de Colombia, Seccional…

  7. A Reappraising of Cosmography: the Interface Between Astronomical and Geographic Studies. (Breton Title: Releitura do Conceito de Cosmografia: a Interface Entre os Estudos Astronômicos e Geográficos.) Una Relectura del Concepto de Cosmografía: la Interfase Entre los Estudios Astronómicos y Geográficos

    NASA Astrophysics Data System (ADS)

    Azevedo Sobreira, Paulo Henrique

    2012-12-01

    The concept of "Cosmography" is in disuse since the 80s of the last century, but the astronomical themes previously discussed in the school subjects of Geography and Cosmography remain in current textbooks. The use of term "Cosmography" was rescued in this research, and the study of its re-signification prompted the appearance of the term Geographic Cosmography. The Geographic Cosmography is a field of studies of the Geography, whose set of knowledge and skills is predominantly scholar. It studies the interface between terrestrial and celestial knowledge, and assigns a geographic significance to them. It examines human and natural relationships with Sidereal Space and its consequences for society and nature. O conceito de "Cosmografia" está em desuso desde os anos 80 do século XX, mas os temas astronômicos anteriormente abordados nas disciplinas escolares de Cosmografia e de Geografia permanecem nos atuais livros didáticos. O uso do termo "Cosmografia" foi resgatado nesta pesquisa e o estudo de sua ressignificação proporcionou o surgimento do termo Cosmografia Geográfica. A Cosmografia Geográfica é um campo de estudos da Geografia, cujo conjunto de conhecimentos e habilidades é predominantemente escolar. Estuda a interface entre os conhecimentos terrestres e os celestes e lhes atribui significância geográfica. Analisa as relações humanas e naturais com o Espaço Sideral e suas consequências para a sociedade e a natureza.

    Aunque el concepto de "Cosmografía" no se usa desde la década de los '80 del siglo pasado, los temas astronómicos que se enseñaban anteriormente en las asignaturas escolares de Cosmografía y de Geografía permanecen en los actuales libros didácticos. El uso del término "Cosmografía" fue rescatado en esta investigación y el estudio de su resignificación proporcionó el surgimiento del término Cosmografía Geográfica. La Cosmografía Geográfica es un campo de estudio de la Geografía, donde el conjunto de conocimientos y habilidades es predominantemente escolar. Estudia la interfase entre los conocimientos terrestres y los celestes, dándoles un significado geográfico. Analiza las relaciones humanas y naturales con el Espacio Sideral y sus consecuencias para la sociedad y la naturaleza.

  8. The Design of a Rubric to Evaluate Laboratory Reports in Astronomy: Academic Literacy in the Disciplines (El diseño de una rúbrica para evaluar informes de laboratorio en Astronomía: la alfabetización académica en las disciplinas)

    ERIC Educational Resources Information Center

    Arancibia Aguilera, María Cristina

    2014-01-01

    A rubric was developed to evaluate laboratory reports written by undergraduate students of astronomy and astrophysics from Universidad Católica de Chile. The process of elaboration, peer validation, and application of the rubric to the evaluation of written tasks extended from August 2011 to August 2012. The instrument proved to be effective as an…

  9. An Exploration of EFL Teachers' Awareness of the Sources of Pedagogical Knowledge in a Teacher Education Program (Una exploración del nivel de conciencia de docentes de inglés como lengua extranjera respecto a las fuentes del conocimiento pedagógico en un programa de formación de docentes)

    ERIC Educational Resources Information Center

    Macías, Diego Fernando

    2013-01-01

    This project set out to investigate the extent to which the sources of English as a foreign language teachers' pedagogical knowledge are acknowledged and addressed in a teacher education program in a public university in Colombia. It involved the participation of teacher educators and novice teachers as well as the analysis of documents. This…

  10. Una guia para los padres sobre lo mas importante: el logro academico plan de educacion de Maryland desde preescolar hasta el 12 grado, 2002-2003. (A Parent's Guide to Achievement Matters Most: Maryland's Plan for PreK-12 Education, 2002-2003).

    ERIC Educational Resources Information Center

    Maryland State Dept. of Education, Baltimore.

    To raise the achievement of every student in the state, Maryland implemented "Achievement Matters Most," a new plan for public elementary and secondary schools that sets goals in the areas of achievement, teaching, testing, safety, and family involvement in schools. This Spanish-language guide for parents outlines the goals and characteristics of…

  11. Minority Languages of the Russian Federation: Perspectives for a Ratification of the European Charter of Regional and Minority Languages. Mercator Working Papers = Las lenguas minoritarias de la Federacion Rusa Perspectivas para una ratificacion de la Carta Europea de las Lenguas Regionales y Minoritarias. Mercator Documentos de trabajo.

    ERIC Educational Resources Information Center

    Vieytez, Eduardo J. Ruiz

    This paper describes the linguistic plurality of the Russian Federation, assessing the impact that the hypothetical ratification of the European Charter of Regional and Minority Languages could have on it. Four sections focus on the following: (1) "Introduction"; (2) "Part 1--The Linguistic Plurality of the Russian Federation": the linguistic…

  12. How Do EFL Student Teachers Face the Challenge of Using L2 in Public School Classrooms? (¿Cómo enfrentan los docentes practicantes de inglés como lengua extranjera el reto de usar una segunda lengua en las aulas de clase de la escuela pública?)

    ERIC Educational Resources Information Center

    Viáfara, John Jairo

    2011-01-01

    As an EFL Student teachers' advisor, I had constantly perceived that they regarded using the target language with their pupils inside their classroom as a challenge. That is why I became interested in investigating how thirteen student teachers in Tunja public schools faced this issue. While participants were involved in a reflective teaching…

  13. Desorden Deficitario de la Atencion. Segunda Edicion. NICHCY Briefing Paper [and] El Desorden Deficitario de la Atencion: Una Bibliografia de Materiales en Ingles y Espanol (Attention Deficit Disorder. Second Edition. NICHCY Briefing Paper [and] Attention Deficit Disorder: A Bibliography of Materials in English and Spanish).

    ERIC Educational Resources Information Center

    Fowler, Mary

    This briefing paper uses a question-and-answer format to provide basic information about children with attention deficit disorder (ADD). Questions address the following concerns: nature and incidence of ADD; causes of ADD; signs of ADD (impulsivity, hyperactivity, disorganization, social skill deficits); the diagnostic ADD assessment; how to…

  14. Hacer lo mejor de la educacion de su nino: Una Guia para padres. Preparado para el Proyecto para la Movilizacion de la Communidad Hispana para la Provencion de la Desercion Escolar. (Making the Most of Your Child's Education: A Guide to Parents. Prepared for the ASPIRA Hispanic Community Mobilization for Dropout Prevention Project).

    ERIC Educational Resources Information Center

    Pell, Elena; And Others

    This guide, in Spanish, offers practical advice to Latino parents on how to help their children succeed academically. Chapter 1, "About This Booklet," discusses the importance of parent involvement in a child's education and development and reviews the format of the five other chapters. Chapter 2, "What Is Parent Involvement, and Why Should I Get…

  15. Indigenous Students' Attitudes towards Learning English through a Virtual Program: A Study in a Colombian Public University (Actitudes de estudiantes indígenas frente al aprendizaje de inglés a través de un programa virtual: un estudio en una universidad pública colombiana)

    ERIC Educational Resources Information Center

    Cuasialpud Canchala, Ruth Elena

    2010-01-01

    This article reports an exploratory study carried out at a public university in Bogotá, Colombia, with two indigenous students who took a level I virtual English-course during the second term of 2008 and the first term of 2009. The aim was to analyse their attitudes towards the learning of English through the virtual modality. Interviews,…

  16. Astronomy, Art and Mythology in a Public Elementary School in Itaocara/rj. (Spanish Title: Astronomía, Arte y Mitologia en el Ensino Fundamental en Una Escuela de la Red Estatal en ITAOCARA/RJ.) Astronomia, Arte e Mitologia no Ensino Fundamental em Escola da Rede Estadual em ITAOCARA/RJ

    NASA Astrophysics Data System (ADS)

    Oliveira Bernardes, Adriana; Ramos dos Santos, Arleidimar

    2008-12-01

    Volunteer advisors at Itaocara Astronomy Club Marcos Pontes(CAIMP), in their majority high school students, introduced students at Teotônio Brandão Vilela Elementary School to basic concepts in Astronomy, Physics, and Mythology. Computer Science, Arts, puppetry, and educational videos were used to stimulate students to share their feelings and test their knowledge of the concepts presented. The work done by the volunteers helped boost the student's self-esteem and improved their oral skills by applying their knowledge of Physics and Astronomy in Lab experiments. The main goals of the CAIMP are the possibility of including astronomy in Elementary school curricula and developing an interdisciplinary work involving Astronomy, Arts, and Mythology. Through tests and reports, the students who participated in the Brazilian Astronomy Olympics, showed an increase in their knowldge of the sujects presented during the volunteer work. Durante el curso de un trabajo voluntario con estudiantes de nivel primario (1 º a 4 º grado), los guías de Astronomía miembros del CAIMP (Club de Astronomía de Itaocara "Marcos Puentes"), en su mayoría estudiantes secundarios, desarrollaron un trabajo de introducción a las Ciencias y Astronomía con alumnos del colegio estatal Teotônio Vilela Brandão. A través de talleres de informática, artes, videos educativos y teatro de títeres, los estudiantes pudieron expresar sus conocimientos y emociones frente a las leyendas mitológicas con las que se inició el trabajo de introducción. La labor desarrollada por los guías con los alumnos promovió la integración entre las aulas del colegio haciéndolos participar en actividades con el fin de estimular su expresión verbal y aumentar su autoestima. Trabajando diversas formas de expresión, los alumnos pudieron realizar experimentos y conocer algunos conceptos de Física y Astronomía al mismo tiempo que adquirían autonomía para la libre expresión de sus sentimientos y de los conocimientos recibidos. El trabajo en sí ha mostrado además de la posibilidad de la inclusión de la Astronomía en la Educación Primaria, la posibilidad de un trabajo interdisciplinario en los niveles iniciales incluyendo Astronomía, Arte y Mitología. Los resultados presentados por los estudiantes en las Olimpiadas promovidas en la escuela y por la OBA (Olimpiada Brasilera de Astronomía) permitieron verificar un creciente aprendizaje y estimulo hacia las materias científicas, comprobados por la apropiada expresión de los conceptos adquiridos de astronomía y presentados en evaluaciones o en informes obtenidos de ellos mismos, sus familias y profesores. Desenvolvendo um trabalho voluntário junto aos alunos do ensino fundamental no 1º ciclo (1ª a 4ª série), os monitores de Astronomia membros do CAIMP (Clube de Astronomia de Itaocara Marcos Pontes), que eram em sua maioria alunos do ensino médio, desenvolveram um trabalho de aproximação entre os alunos do Colégio Estadual Teotônio Brandão Vilela e os temas envolvendo Ciências e Astronomia. Através de oficinas de informática, artes, vídeos educativos e teatros de fantoches, os alunos puderam expressar seus conhecimentos e emoções diante das lendas mitológicas com as quais começaram a ter contato. O trabalho desenvolvido pelos monitores junto aos alunos proporcionou a integração entre as turmas do colégio e os levou a participação em atividades de maneira a estimular sua oralidade e aumentar sua auto-estima. Trabalhando várias formas de expressões, os alunos puderam realizar seus experimentos e conhecer alguns conceitos de Física e Astronomia, enquanto adquiriam autonomia para se expressarem de acordo com seus sentimentos e conhecimentos adquiridos. O trabalho em si mostrou além da possibilidade de inserção de Astronomia no Ensino Fundamental, a possibilidade de realização de um trabalho interdisciplinar nas séries iniciais envolvendo Astronomia, Arte e Mitologia. Os resultados apresentados pelos alunos nas Olimpíadas promovidas na escola e pela OBA (Olimpíada Brasileira de Astronomia) possibilitaram a verificação de uma crescente aprendizagem e estímulo ao conhecimento de temas científicos, que foi comprovado diante da apropriação dos conceitos de Astronomia adquiridos e apresentados em resultados como avaliações, ou ainda, diante dos relatos obtidos dos mesmos, suas famílias e professores.

  17. BOCCE, The Bologna Open Clusters Chemical Evolution Project: a large, homogeneous sample of Galactic open clusters. (Spanish Title: %t Proyecto BOCCE (The Bologna Open Clusters Chemical Evolution Project): una gran muestra homogénea de cúmulos abiertos galácticos)

    NASA Astrophysics Data System (ADS)

    Ahumada, A. V.; Bragaglia, A.; Tosi, M.; Marconi, G.

    The BOCCE project is a photometric and spectroscopic survey of Galactic open clusters (OCs), to be used as tracers of the properties and evolution of the Galactic disk. The main OCs parameters are derived in a precise and homogeneous way, and they will be used, for example, to determine the metallicity distribution in the Galactic disk and how it has evolved with time. We have presently data for about 40 OCs. We present here part of our last effort, concerning the photometric data obtained for NGC 2849.

  18. Oxygen uptake of overweight and obese children at different stages of a progressive treadmill test: Consumo de oxígeno de niños y niñas con sobrepeso y obesos en los diferentes estadios de una prueba progresiva en un tapiz rodante.

    PubMed

    Meléndez-Ortega, Agustín; Lucy Davis, Catherine; Barbeau, Paule; Boyle, Colleen Ann

    2010-01-01

    INTRODUCTION: Maximal oxygen uptake (VO2 max) is associated with cardiovascular and metabolic risks but it is difficult to assess in obese children. The objective of this study was to develop an equation to estimate VO2 (mL/kg/min) and to check the % of tests that were maximal according to recommended criteria. METHODS: Stress tests were analyzed of 222 subjects (94 male and 128 female with a BMI above the 85 percentile for age and sex), and repeated 4 months later. Mean age was 9.4 ± 1.1 years and weighed 52.4 ± 13.3 kg. Body fat % (40.5 + 6.2) was determined by DXA (Hologic QDR 4500W). The protocol on the treadmill started with a warm up at 2.5 and 3 mph with a slope of 0% and 2%. The speed was kept at 3 mph for all the stages and the slope was increased 2% every 2 minutes. Statistical analysis (descriptive, t-test and ANOVAS 2×2×2) was done with SPSS 15.0. RESULTS: Only 35% of the tests were maximal. The equation calculates was Y = 2.6x + 22.3 (x = protocol stage). Data pre and post treatment were not statistically different DISCUSSION: Increments in VO2 were consistent despite subject diversity (sex, % body fat, physical fitness, treatment). CONCLUSION: To be able to estimate VO2 at the different stages of the test without complex equipment or specialized staff, will facilitate the performance of stress tests on a daily basis. PMID:21218170

  19. La Roya naranja de la caña de azúcar, una enfermedad emergente: su impacto y comparación con la roya marrón English Translation: Orange rust of sugarcane, an emerging disease: its impact and comparison to brown rust.

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Sugarcane orange rust, caused by Puccinia kuehnii, was first detected in Florida in 2007, the first for Western Hemisphere. Subsequently, it has spread to the majority of sugarcane producing countries in the hemisphere. Orange rust is distinguished from brown rust its pustule size which is slightl...

  20. Using a Blog to Guide Beginner Students to Use Adjectives Appropriately When Writing Descriptions in English (El uso de una bitácora o "blog" para guiar a estudiantes principiantes en el uso apropiado de los adjetivos cuando escriben descripciones en inglés)

    ERIC Educational Resources Information Center

    Lizarazo Jara, Omar Yesid

    2012-01-01

    Beginner students often have difficulties using adjectives when they write descriptions in English. This article focuses on the procedures used to help my sixth grade students understand and use adjectives in the correct order by using a blog. To achieve the objective of the project I decided to implement an innovation in and out of class…

  1. Teacher Activities and Adolescent Students' Participation in a Colombian EFL Classroom (Actividades de enseñanza y participación de estudiantes adolescentes en una clase de enseñanza de inglés como lengua extranjera en Colombia)

    ERIC Educational Resources Information Center

    Caicedo, Jefferson

    2015-01-01

    The present study concerns the activities teachers develop and ninth-graders' participation in responses to those activities. The objectives of this study were to identify and describe the types of teaching activities developed and how students respond to them and to show how the target language is used in the classroom. The data collection was…

  2. A Visit to the Library: Activities for Families with Children Ages 3 to 5 [Presented by]"Between the Lions[R]" = Una visita a la biblioteca: Actividades para familias con ninos de 3 a 5 anos [presentado por]"Between the Lions[R]."

    ERIC Educational Resources Information Center

    WGBH-TV, Boston, MA.

    "Between the Lions" is a Public Broadcasting System program promoting literacy for children ages 4 through 7 years combining state-of-the-art puppetry, animation, live action, and music to achieve its mission of helping young children learn to read. This guide, in English- and Spanish-language versions, provides suggestions for parents of 3- to…

  3. For a Child, Life is a Creative Adventure: Supporting Development and Learning through Art, Music, Movement, and Dialogue. A Guide for Parents and Professionals. = Para los ninos, la vida es una aventura creativa: Como estimular el desarrollo y el aprendizaje por medio de las artes visuales, la musica, el movimiento y el dialogo. Guia para padres de familia y profesionales.

    ERIC Educational Resources Information Center

    Cohen, Elena

    Recognizing that creativity facilitates children's learning and development, the Head Start Program Performance Standards require Head Start programs to include opportunities for creative self-expression. This guide with accompanying videotape, both in English- and Spanish- language versions, encourages and assists adults to support children's…

  4. Neogene stratigraphy and Andean geodynamics of southern Ecuador

    NASA Astrophysics Data System (ADS)

    Hungerbühler, Dominik; Steinmann, Michael; Winkler, Wilfried; Seward, Diane; Egüez, Arturo; Peterson, Dawn E.; Helg, Urs; Hammer, Cliff

    2002-01-01

    The present paper reviews Tertiary volcanic and sedimentary formations in the Inter-Andean region of southern Ecuador (between 2°S and 4°20'S) in order to develop a geodynamic model of the region. The formations occur in the southern shallow prolongation of the Inter-Andean Valley between the Cordillera Real to the east, and the Cordillera Occidental and Amotape-Tahuı´n Provinces to the west. One hundred fifty zircon fission-track analyses has established a detailed chronostratigraphy for the sedimentary and volcanic formations and several small intrusions. The Paleogene to early Miocene formations are dominated by intermediate and acidic volcanic and pyroclastic rocks. In addition, relics of Eocene continental sedimentary series have been identified. The Neogene sedimentary series lie unconformably on deformed and eroded metamorphic, sedimentary and volcanic formations. They were deposited in two stages, which are separated by a major unconformity dated at ≈10-9 Ma. (1) During the middle and early late Miocene (≈15-10 Ma) marginal marine deltaic, lagoonal, lacustrine and fluvial environments prevailed, which we group under the heading "Pacific Coastal sequences". They presumably covered a greater surface area in southern Ecuador than their present occurrence in small topographic depressions. We suggest that they were deposited in the shallow marine Cuenca and Loja Embayments. Deposition in a marginal marine environment is also supported by the occurrence of brackish water ostracods and other fauna. (2) Above the regional (angular) unconformity, the coastal facies are overlain by late Miocene (≈9-5 Ma) continental alluvial fan and fluvial facies which are in turn covered by mainly airborne volcanic material. They represent the "Intermontane sequences" of the basins of Cuenca, Girón-Santa Isabel, Nabón, Loja and Malacatos-Vilcabamba. Sedimentologic and stratigraphic results are used to discuss the tectonic setting of Neogene sedimentation in the forearc

  5. [Fertility decline in Spain].

    PubMed

    Arango, J

    1987-01-01

    The historical processes of secular fertility decline in Spain and Portugal are not well understood. Very few microdemographic studies of small geographic regions or particular social strata have been done. A contribution by David Reher to the First Spanish-Portuguese-Italian Historical Demography Conference on the fertility decline in the interior province of Cuenca, Spain, uses the own-children method to analyze changes in marital fertility in the 19th and 20th centuries. Reher discovered a slight fertility decline of perhaps 15% which occurred between the end of the 18th century and 1860-75. The fertility decline did not resume until after the Spanish Civil War, and then it was a very gradual and continuous process. When instead of the total female population, women aged 35-39 were studied, unequivocal signs of fertility control appeared. Conscious fertility control thus appears to have begun among older women limiting rather than spacing births. Reher's analysis by social groups demonstrates that fertility declined first and more rapidly in the nonagricultural and urban populations and among the higher income groups. The fertility decline in Cuenca was certainly not identical to that in most of Spain, but may have been fairly typical of a large part of the interior. Another contribution to the Historical Demography Conference, by Anna Cabre and Isabel Pujadas, analyzes fertility trends and cyclical fluctuations in 20th century Cataluna, arguing that they must be placed in historical perspective if recent changes are to be understood and plausible projections made. Their work demonstrates the value of selecting a relatively homogeneous geographic unit for analysis. The contribution of Margarita Delgado to the conference analyzed interregional fertility differences in contemporary Spain. The high legitimate fertility of the south of Spain is accentuated by high nuptiality rates. In central Spain, the combination of high legitimate fertility rates and low

  6. Paleoecological studies at Lake Patzcuaro on the west-central Mexican Plateau and at Chalco in the basin of Mexico

    USGS Publications Warehouse

    Watts, W.A.; Bradbury, J.P.

    1982-01-01

    A 1520-cm sediment core from Lake Patzcuaro, Michoacan, Mexico, is 44,000 yr old at the base. All parts of the core have abundant pollen of Pinus (pine), Alnus (alder), and Quercus (oak) with frequent Abies (fir). The interval dated from 44,000 to 11,000 yr ago has a homogeneous flora characterized by abundant Juniperus (juniper) pollen and frequent Artemisia (sagebrush). It is believed to represent an appreciably drier and colder climate than at present. The Holocene at Lake Patzcuaro is characterized by a moderate increase in Pinus pollen and the loss of Juniperus pollen, as the modern type of climate succeeded. Alnus was abundant until about 5000 yr ago; its abrupt decrease with the first appearance of herbaceous weed pollen may reflect the cutting of lake-shore and stream-course alder communities for agricultural purposes, or it may simply reflect a drying tendency in the climate. Pollen of Zea (corn) appears at Lake Patzcuaro along with low peaks of chenopod and grass pollen at 3500 yr B.P. apparently recording a human population large enough to modify the natural environment, as well as the beginning of agriculture. A rich aquatic flora in this phase suggests eutrophication of the lake by slope erosion. In the most recent period corn is absent from the sediments, perhaps reflecting a change in agricultural practices. The environment changes at Lake Patzcuaro are similar to and correlate with those in the Cuenca de Mexico, where diatom stratigraphy from the Chalco basin indicates fluctuations in lake levels and lake chemistry in response to variations in available moisture. Before 10,000 yr ago climates there were cool and dry, and the Chalco basin was occupied by a shallow freshwater marsh that drained north to Lake Texcoco, where saline water accumulated by evaporation. Increases in effective moisture and possible melting of glaciers during the Holocene caused lake levels to rise throughout the Cuenca de Mexico, and Lake Texcoco flooded the Chalco basin with

  7. Distributed modeling of storm flow generation in an Amazonian rain forest catchment: Effects of model parameterization

    NASA Astrophysics Data System (ADS)

    Vertessy, Robert A.; Elsenbeer, Helmut

    1999-07-01

    We describe a process-based storm flow generation model, Topog_SBM consisting of a simple bucket model for soil water accounting, a one-dimensional kinematic wave overland flow scheme, and a contour-based element network for routing surface and subsurface flows. Aside from topographic data and rainfall the model has only six input parameters: soil depth (z), saturated hydraulic conductivity at the soil surface (K0), the rate of decay in K0 with depth (m), the Manning surface roughness parameter (n), the maximum (saturated) soil water content (θs), and the minimum (residual) soil water content (θr). However, the model is fully distributed, so these values can vary in magnitude across space. The model was applied to La Cuenca, a very small rainforest catchment in western Amazonia that has been well characterized in several hydrometric and hydrochemical investigations. Total runoff, peak runoff, time of rise, and lag time were predicted for 34 events of varying magnitudes and antecedent moisture conditions. We compared results for eight different model parameterizations or "sets"; four of these were freely calibrated to yield the best possible model fit to runoff data, whereas the other four were constrained (in various ways) by the use of actual K0 data gathered for the catchment. The eight sets were calibrated on either one of three events or on the three events jointly to illustrate the importance of calibration event selection on model performance. Model performance was evaluated by comparing observed and predicted (1) storm flow hydrograph attributes and (2) spatiotemporal patterns of overland flow occurrence across the catchment. The model generally predicted the right amount of runoff but usually underpredicted the peak runoff rate and overpredicted the time of rise. The "best" parameterization could credibly predict hydrographs for only about half of the events. Significant, and sometimes gross, errors were encountered for about one fourth of the events

  8. The role of economic analysis in groundwater management in semi-arid regions: the case of Nigeria

    NASA Astrophysics Data System (ADS)

    Acharya, Gayatri

    The aim of this paper is to use an economic framework to derive decision making rules for river basin management with a focus on groundwater resources. Using an example from northern Nigeria, the paper provides an example of how decision making for sustainable water resources management may be facilitated by comparing net benefits and costs across a river basin. It is argued that economic tools can be used to assess the value of water resources in different uses, identify and analyze management scenarios, and provide decision rules for the sustainable use and management of surface and ground water resources in the region. L'objet de cet article est l'utilisation d'un cadre économique pour établir des règles de prise de décision pour la gestion d'un bassin versant prenant en compte les ressources en eau souterraine. À partir d'un exemple du Nigéria septentrional, cet article explique comment une prise de décision pour la gestion durable de ressources en eau peut être facilitée en comparant les bénéfices nets et les coûts sur tout le bassin versant. Il est montré que les outils économiques peuvent être utilisés pour établir la valeur des ressources en eau dans les différents usages, pour identifier et analyser des scénarios de gestion et pour fournir des règles de décision pour un usage et une gestion durables des ressources en eaux de surface et souterraines dans la région. El objetivo de este artículo es utilizar un enfoque económico para deducir reglas de toma de decisión en la gestión de cuencas, haciendo énfasis en los recursos subterráneos. Por medio de un ejemplo del Norte de Nigeria, se ilustra cómo la toma de decisiones orientadas a la gestión sustentable de los recursos hídricos puede ser facilitada si se compara los beneficios netos y los costes en toda la cuenca. Se argumenta que las herramientas económicas pueden servir para establecer el valor de los recursos hídricos destinados a usos diferentes, para identificar y

  9. [Description of a series of hospital patients with a spinal fistula].

    PubMed

    Garcia-Cabo, C; Morales-Deza, E S; Martinez-Rodriguez, L; Murias-Quintana, E; Perez-Alvarez, A; Martinez-Ramos, J; Vega-Valdes, P; Suarez-Santos, P; Garcia-Rua, A; Moris, G

    2016-10-01

    Introduccion. Aunque las fistulas espinales suponen el 70% de las malformaciones arteriovenosas espinales, son una entidad infradiagnosticada. El shunt arteriovenoso produce una congestion vascular que da lugar a una mielopatia progresiva, en ocasiones irreversible si no se trata de forma precoz. Objetivo. Describir las caracteristicas clinicorradiologicas de una serie de pacientes con fistula espinal. Pacientes y metodos. Se realizo una busqueda retrospectiva de pacientes con diagnostico de fistula espinal ingresados en el area de neurociencias de un hospital de tercer nivel asistencial. Resultados. Se identificaron 19 pacientes (7 mujeres y 12 varones) con una edad media de 56 años. La fistula espinal fue de tipo I en un 79% de los pacientes y la localizacion dorsal fue la mas frecuente. La mayoria de los casos presento un curso progresivo (90%). Un 74% de los pacientes se diagnostico mediante resonancia magnetica. En cuatro casos fue necesaria la realizacion de una angiografia para llegar al diagnostico, y en uno de ellos se preciso una biopsia intraoperatoria. Se realizaron tres punciones lumbares, en dos de las cuales se objetivo pleocitosis linfocitaria e hiperproteinorraquia. El retraso diagnostico medio fue de nueve meses. Se trato a un 79% de los pacientes, y de ellos solo mejoro el 10%. Conclusiones. Ante una clinica sugestiva de fistula espinal, debe realizarse una angiografia espinal diagnostica aunque el paciente estudiado pueda presentar caracteristicas licuorales atipicas y normalidad en la resonancia magnetica medular.

  10. Creativity and Democratic Governance. Adult Learning: A Strategic Choice. Proceedings of the ICAE World Assembly (6th, Ocho Rios, Jamaica, August 9-12, 2001) = Creativite et Gouvernance Democratique. L'apprentissage des Adultes: Un Choix Strategique. Actes de la Assemblee Mondiale du CIEA (6th, Ocho Rios, Jamaique, 9 au 12 aout 2001) = Creatividad y Gobernabilidad Democratica. Educacion de Adultos: Una Eleccion Estrategica. Actas de la Asamblea Mundial del ICAE (6th, Ocho Rios, Jamaica, Agosto 9-12, 2001).

    ERIC Educational Resources Information Center

    Dobson, Stephan, Ed.

    This document contains information from and about a world assembly on creativity and democratic governance in adult learning that was held by the International Council for Adult Education (ICAE) and its partner organizations in the Caribbean. The proceedings begin with English, French, and Spanish translations of the address…

  11. Derechos Educacionales de los Padres: Una Explicacion de los Procedimientos de Seguridad para los Padres de Ninos con Discapacidades. Bajo la Clausula del Acta de Educacion para Individuos con Discapacidades (IDEA) y las Reglas para la Administracion del Acta de Educacion para Ninos Excepcionales (Educational Rights of Parents: An Explanation of Procedural Safeguards Available to Parents of Children with Disabilities. Under Provisions of the Individuals with Disabilities Education Act (IDEA) and the Rules for the Administration of the Exceptional Children's Educational Act [ECEA]).

    ERIC Educational Resources Information Center

    Mountain Plains Regional Resource Center, Des Moines, IA.

    This pamphlet, in Spanish, describes Colorado parents' educational rights under federal and state special education rules and regulations. It addresses: (1) free appropriate public education and termination of services; (2) required prior notice to parents if there is a proposed change or refusal to change a child's special education program; (3)…

  12. Découverte d'une mégafaune holocène à la Toca do Serrote do Artur (aire archéologique de São Raimundo Nonato, Piauî, Brésil). A gruta do Serrote do Artur (área arqueológica de São Raimundo Nonato, Piaúi, Brasil): dataçoes holocênicas para megafáuna de mamíferos

    NASA Astrophysics Data System (ADS)

    Faure, Martine; Guérin, Claude; Parenti, Fabio

    1999-09-01

    The cave of Toca do Serrote do Artur (São Raimundo Nonato Archaeological Area, southeastern Piauí, Brazil) has yielded a Mammalian community constituted of Dasypus septemcinctus, Propraopus cf. sulcatus, Hoplophorus euphractus, Glyptodon clavipes, Conepatus sp., Panthera onca, Equus neogaeus, Dicotyles tajacu, Tayassu pecari, Palaeolama major, Mazama guazoubira, Mazama americana and a large Cervid. In comparison with the Mammalian fauna of the other sites from the same area, such a list shows a comparatively reduced biodiversity together with the presence of rare ( Hoplophorus, Conepatus) or unknown ( Propraopus, Palaeolama major) taxa. Explanation lies in the more recent age of the fossiliferous layers, probably Lower Holocene, as demonstrated by two 14C dating of 8 490 ± 120 BP and 6 890 ± 60 BP of the highest one. Moreover, that fauna shows the late survival of some genera ( Propraopus, Hoplophorus, Glyptodon, Equus, Palaeolama) together with climatic modifications related to the Pleistocene-Holocene transition.

  13. [Endovascular treatment of critical basilar stenosis with a Solitaire® stent device: a first experience in our centre].

    PubMed

    Mulero, Patricia; Cortijo-García, Elisa; Ruiz-Piñero, Marina; Pérez-Fernández, Santiago; Arenillas-Lara, Juan F; Martínez-Galdámez, Mario

    2014-08-01

    Introduccion. Aunque la arterioesclerosis intracraneal es una causa importante de ictus, la actitud terapeutica no esta claramente establecida. En este sentido, el estudio SAMMPRIS comparo el tratamiento medico intensivo con la angioplastia y colocacion de stent, con resultados favorables al tratamiento farmacologico. Estos resultados podrian, en parte, deberse al dispositivo utilizado (stent Wingspan ®). Caso clinico. Varon de 71 años con una estenosis grave de la arteria basilar, en quien se repetian episodios de focalidad neurologica transitoria a pesar del tratamiento con doble antiagregacion y estatinas. En estas circunstancias se decidio realizar una arteriografia terapeutica con angioplastia y colocacion de un stent Solitaire ® para optimizar resultados y se logro una estenosis residual del 40%. La evolucion fue favorable y los controles posteriores muestran una minima progresion. Conclusion. Segun nuestro conocimiento, este es el primer caso publicado de tratamiento de una estenosis critica de la arteria basilar mediante la colocacion de un stent Solitaire ®.

  14. [Papilionoidea from Sierra de Huantla, Morelos and Puebla, México (Insecta: Lepidoptera)].

    PubMed

    Luna-Reyes, Mercedes; Llorente-Bousquets, Jorge

    2008-12-01

    The Cuenca del Balsas region has significant biodiversity and endemicity of its herpetofauna, avifauna and vascular plants. Despite this, our knowledge of the Papilionoidea of the region is poor. We analyzed the local and temporal distribution of Papilionoidea at 24 localities in the states of Morelos and Puebla. The study sites are situated between 900 and 1300 m. a.s.l., and are composed of dry tropical forest (dtf). We recorded 8790 individuals of 83 genera and 142 species of Papilionoidea (sensu Kristensen, 1975), over 79 days of field work, with 2-4 days at each of the 24 localities. Twenty five species were newly recorded for the state of Puebla. Our data render Morelos and Puebla among the seven richest Mexican states, in terms of Papilionoidea diversity. Our results show that the Sierra de Huautla has the lowest diversity, but the highest standard abundance, compared to other Mexican regions with similar vegetation. Patterns of diversity and seasonal abundance are atypical, in that individuals of many species are unusually abundant during the wet months.

  15. New host, geographic records, and histopathologic studies of Angiostrongylus spp (Nematoda: Angiostrongylidae) in rodents from Argentina with updated summary of records from rodent hosts and host specificity assessment.

    PubMed

    Robles, María del Rosario; Kinsella, John M; Galliari, Carlos; Navone, Graciela T

    2016-03-01

    To date, 21 species of the genus Angiostrongylus (Nematoda: Angiostrongylidae) have been reported around the world, 15 of which are parasites of rodents. In this study, new host, geographic records, and histopathologic studies of Angiostrongylus spp in sigmodontine rodents from Argentina, with an updated summary of records from rodent hosts and host specificity assessment, are provided. Records of Angiostrongylus costaricensis from Akodon montensis and Angiostrongylus morerai from six new hosts and geographical localities in Argentina are reported. The gross and histopathologic changes in the lungs of the host species due to angiostrongylosis are described. Published records of the genus Angiostrongylus from rodents and patterns of host specificity are presented. Individual Angiostrongylus species parasitise between one-19 different host species. The most frequent values of the specificity index (STD) were between 1-5.97. The elevated number of host species (n = 7) of A. morerai with a STD = 1.86 is a reflection of multiple systematic studies of parasites from sigmodontine rodents in the area of Cuenca del Plata, Argentina, showing that an increase in sampling effort can result in new findings. The combination of low host specificity and a wide geographic distribution of Angiostrongylus spp indicates a troubling epidemiological scenario although, as yet, no human cases have been reported. PMID:26982178

  16. New host, geographic records, and histopathologic studies of Angiostrongylus spp (Nematoda: Angiostrongylidae) in rodents from Argentina with updated summary of records from rodent hosts and host specificity assessment

    PubMed Central

    Robles, María del Rosario; Kinsella, John M; Galliari, Carlos; Navone, Graciela T

    2016-01-01

    To date, 21 species of the genus Angiostrongylus (Nematoda: Angiostrongylidae) have been reported around the world, 15 of which are parasites of rodents. In this study, new host, geographic records, and histopathologic studies of Angiostrongylus spp in sigmodontine rodents from Argentina, with an updated summary of records from rodent hosts and host specificity assessment, are provided. Records of Angiostrongylus costaricensis from Akodon montensis andAngiostrongylus morerai from six new hosts and geographical localities in Argentina are reported. The gross and histopathologic changes in the lungs of the host species due to angiostrongylosis are described. Published records of the genus Angiostrongylus from rodents and patterns of host specificity are presented. Individual Angiostrongylusspecies parasitise between one-19 different host species. The most frequent values of the specificity index (STD) were between 1-5.97. The elevated number of host species (n = 7) of A. morerai with a STD = 1.86 is a reflection of multiple systematic studies of parasites from sigmodontine rodents in the area of Cuenca del Plata, Argentina, showing that an increase in sampling effort can result in new findings. The combination of low host specificity and a wide geographic distribution of Angiostrongylus spp indicates a troubling epidemiological scenario although, as yet, no human cases have been reported. PMID:26982178

  17. Titanosaur osteoderms from the Upper Cretaceous of Lo Hueco (Spain) and their implications on the armor of Laurasian titanosaurs.

    PubMed

    Vidal, Daniel; Ortega, Francisco; Sanz, José Luis

    2014-01-01

    Titanosaurs are the only sauropod dinosaurs known to bear a dermal armor. Their osteoderms are relatively rare finds, with few more than a hundred specimens recovered worldwide. Also, little is known about their intra-individual, intra-specific or inter-specific variability. The macrovertebrate site of Lo Hueco (Upper Cretaceous; Cuenca, Spain) has yielded several complete specimens of osteoderms, some associated with fairly articulated specimens. They are all variations of the morphotype known as bulb and root. The presence of only this morphotype in Europe, which is considered as the primitive condition among titanosaurs, seems to indicate that the known Upper Cretaceous Laurasian titanosaurs only bore these referred bulb and root osteoderms. An eliptic Fourier analysis on the outline of complete specimens from this morphotype reveals: i) that they truly are part of a morphological cline; and ii) the existence of a consistent correlation between the outline and the morphology of the bulb. Such variation along a cline is more consistent with intra-individual rather than inter-specific variation. The osteoderms associated with a single titanosaur individual from Lo Hueco reinforce this hypothesis. PMID:25118985

  18. CFD study to determine the optimal configuration of aerators in a full-scale waste stabilization pond.

    PubMed

    Alvarado, Andres; Vesvikar, Mehul; Cisneros, Juan F; Maere, Thomas; Goethals, Peter; Nopens, Ingmar

    2013-09-01

    Aerated lagoons (ALs) are important variants of the pond wastewater treatment technology that have not received much attention in the literature. The hydraulic behaviour of ALs and especially the Facultative aerated lagoons (FALs) is very complex since the aeration in these systems is designed for oxygen transfer but not necessarily to create complete mixing. In this work, the energy expenditure of the aerators was studied by means of a scenario analysis. 3D CFD models (one phase and multiphase) of a 3 ha FAL in a waste stabilization pond system in Cuenca (Ecuador) were built for different configurations of aerators. The thrust produced by the aerators was modelled by an external momentum source applied as velocity vectors into the pond fluid. The predictions of a single phase model were in satisfactory agreement with experimental results. Subsequently, a scenario analysis assessing several aeration schemes with different numbers of aerators in operation were tested with respect to velocity profiles and residence time distribution (RTD) curves. This analysis showed that the aeration scheme with all 10 aerators switched on produces a similar hydraulic behaviour compared to using only 6 or 8 aerators. The current operational schemes comprise of switching off some aerators during the peak hours of the day and operating all 10 aerators during night. This current practice could be economically replaced by continuously operating 4 or 6 aerators without significantly affecting the overall mixing. Furthermore, a continuous mixing regime minimises the sediment oxygen demand enhancing the oxygen levels in the pond. PMID:23764602

  19. Investigation on the hazing of a Brazilian contemporary painting.

    PubMed

    Puglieri, Thiago S; Lavezzo, Ariane S; dos Santos, Isabela F S; de Faria, Dalva L A

    2016-04-15

    A whitish crystalline-like coating was observed on the surface of the painting "Incêndio", 1990, produced by Emmanuel Nassar and awarded at the 6th Biennial of Cuenca. This work belongs to the Contemporary Art Museum of the University of São Paulo (MAC-USP) and such coating modified the artwork characteristics, causing an unpleasant effect and compromising its exhibition. The choice of the proper conservation and restoration strategies involves the understanding of the degradation process, demanding the identification of the chemical compounds formed on the painting surface, as well as of the other components in the painting. The results here obtained from Raman and optical microscopies, FTIR-ATR, SEM-EDS and GC-MS, revealed that the efflorescence chemical composition is almost only palmitic acid, with minor contents of stearic acid and their methyl esters, and that the paints are composed by chrome yellow, amorphous carbon and toluidine red pigment; an aluminum silicate filler in the black paint applied on the aluminum ground was also detected. Hierarchical Cluster Analyses (HCA) of the Raman spectra also revealed that the concentration of the efflorescence minor components depends on the paint composition. It was suggested, therefore, that the degradation process resulted from segregation and migration of mainly palmitic acid from the dried paints. Restoration methodologies used in similar cases, as well as factors that contribute to this process, were discussed. PMID:26836452

  20. Monthly hail time series analysis related to agricultural insurance

    NASA Astrophysics Data System (ADS)

    Tarquis, Ana M.; Saa, Antonio; Gascó, Gabriel; Díaz, M. C.; Garcia Moreno, M. R.; Burgaz, F.

    2010-05-01

    Hail is one of the mos important crop insurance in Spain being more than the 50% of the total insurance in cereal crops. The purpose of the present study is to carry out a study about the hail in cereals. Four provinces have been chosen, those with the values of production are higher: Burgos and Zaragoza for the wheat and Cuenca and Valladolid for the barley. The data that we had available for the study of the evolution and intensity of the damages for hail includes an analysis of the correlation between the ratios of agricultural insurances provided by ENESA and the number of days of annual hail (from 1981 to 2007). At the same time, several weather station per province were selected by the longest more complete data recorded (from 1963 to 2007) to perform an analysis of monthly time series of the number of hail days (HD). The results of the study show us that relation between the ratio of the agricultural insurances and the number of hail days is not clear. Several observations are discussed to explain these results as well as if it is possible to determinte a change in tendency in the HD time series.

  1. Uncertainties in the stratigraphic analysis of fluvial deposits from the Loranca Basin, central Spain

    NASA Astrophysics Data System (ADS)

    Daams, R.; Díaz-Molina, M.; Mas, R.

    1996-03-01

    A detailed stratigraphic and sedimentological analysis is given of Late Oligocene to Early Miocene continental sediments in a small area (1 km 2) of the Loranca Basin (Province of Cuenca). The studied exposure is a part of the Tórtola fluvial fan and mainly consists of superimposed meander belt sediments. The ages of base and top of the sedimentary succession were obtained by a combination of biostratigraphic and palaeomagnetic data, thus allowing us to estimate the mean sedimentation rates of the section (10 cm/ka). Our estimation of the sediment accumulation rate based on the analysis of palaeosols (18 cm/ka) appears to be reasonably reliable for short-term accumulation rates. The small size of palaeochannels and the relatively wide basin section may have allowed the development of a distributary fluvial system and may have caused the low vertical recurrence of relatively episodic sedimentation. The time interval covered by the sediments studied shows a progressive trend toward drier conditions and higher temperatures, inferred from qualitative and quantitative changes in fossil rodent faunas. These trends coincide with a gradual decrease of maximum values of estimated discharge of our fluvial systems. In these sediments it is dangerous to establish a correlation between the detected possible climatic changes and Milankovitch cycles. This is due to the low sedimentation rate and the frequent discontinuities in our stratigraphic record.

  2. Seismics-electrics Joint Interpretation in a gypsiferous context.

    NASA Astrophysics Data System (ADS)

    Marzan, Ignacio; Marti, David; Lobo, Agustin; Alvarez-Marron, Joaquina; Carbonell, Ramon

    2016-04-01

    The main objective of this study is to improve the geophysical characterization resulting from a shallow 3D high resolution travel-time tomography survey (500x500m). This survey was acquired in Villar de Cañas (Cuenca, Spain) in late 2013 and early 2014. Lithology down to 150 m depth in this site is characterized by endorheic sediments, mainly siltstone and gypsum. After processing the tomography data, the velocity model showed a good correlation with geology models and borehole data except for the siltstone-gypsum transition. The model involves two lithological limits: the "transition layer - massive gypsum layer" (well resolved by a relatively high velocity contrast) and the "siltstone layer - transition layer" (constrained only in the central part of the model by a relatively low velocity contrast). As electrical resistivity is able to characterize shale-gypsum transitions, we complemented the seismic data with results from a collection of 2D ERT surveys, for which we build a new 3D grid with 2 parameters by node: velocity and resistivity. In order to derive a geological interpretation, we apply a statistical classification method (Linear Discriminant Analysis) to the new bi-parametric grid, using reference classes from well logs. This process results on a final 3D lithological model with less ambiguity and thus with a better definition of the two limits under discussion. Our study shows that the integration of seismic and electric methods significantly improves geological characterization in a gypsiferous context.

  3. Analysis of the maximum discharge of karst springs

    NASA Astrophysics Data System (ADS)

    Bonacci, Ognjen

    2001-07-01

    ) la dimension limitée du conduit karstique, (2) l'écoulement en charge, (3) le débordement dans un autre bassin, (4) le débordement du réseau s'écoulant vers la source principale par des sources temporaires dans le même bassin, (5) le stockage d'eau dans la zone surmontant l'aquifère karstique ou la zone épikarstique du bassin, et (6) des facteurs tels que le climat, le sol et le couvert végétal, l'altitude et la géologie du bassin d'alimentation. Le phénomène de capacité limitée du débit maximal des sources karstiques n'est pas pris en compte dans la modélisation des processus de précipitation-ruissellement, ce qui est probablement une des principales raisons de l'actuelle médiocre qualité de la modélisation hydrologique du karst. Resumen. Se presenta un análisis de las condiciones que limitan la descarga de algunos manantiales kársticos. Un elevado número de los manantiales estudiados muestra que, bajo condiciones de precipitación extremadamente intensa, hay un valor máximo para la descarga de los manantiales principales de la cuenca, independientemente del tamaño de ésta y del volumen de precipitación. La modelación de la descarga de manantiales kársticos no es fácil de generalizar y esquematizar debido a la existencia de numerosas características que son inherentes a los sistemas kársticos de flujo. A partir del estudio detallado de los datos publicados sobre cuatro manantiales kársticos, se identificó las posibles causas de la existencia de un caudal máximo de descarga: (1) el tamaño limitado del conducto kárstico, (2) el caudal surgente, (3) la descarga a otras cuencas, (4) el desbordamiento del sistema de flujo principal hacia manantiales intermitentes dentro de la misma cuenca, (5) el almacenamiento de agua en la zona superior del acuífero kárstico o zona epikárstica de la cuenca, y (6) factores tales como el clima, suelo y cubierta vegetal, y la altitud y geología de la zona de captación. La limitación de la

  4. Origin of the Permian-Triassic Iberian Basin, central-eastern Spain

    NASA Astrophysics Data System (ADS)

    Arche, Alfredo; López-Gómez, José

    1996-12-01

    The Iberian Basin was an intracratonic rift basin in central-eastern Spain developed since Early Permian times. The basin boundary faults were normal, listric faults controlling an asymmetric extension propagating northeast with time. Hercynian or older lineaments controlled the orientation of the Iberian Basin and extension was accommodated basically in the hanging wall block by the formation of secondary grabens and a central high. The basin was related with the coeval Ebro, Catalan and Cuenca-Mancha Basins and their connections are discussed. Subsidence curves show that the Early Permian-Early Jurassic period of extension can be subdivided into three rifting episodes and a flexural one. Extension factor increases from 1.17 in the northwest to 1.29 near the Mediterranean coast. The increasing extension rate was accommodated by transfer faults trending NNE-SSW, more important in the Levante area. The rift evolution is intermittent and seems to reflect distinct stress fields. The collapse of the late Hercynian orogen and related increased heat flux, extension and rifting is the most probable origin of the Iberian Basin and related basins. The origin of the Catalan and the Valencia-Prebetic Basins is related to the southwards migration of the Hesse-Burgundy Rift along the eastern margin of the Iberian Microplate.

  5. Investigation on the hazing of a Brazilian contemporary painting

    NASA Astrophysics Data System (ADS)

    Puglieri, Thiago S.; Lavezzo, Ariane S.; Santos, Isabela F. S. dos; de Faria, Dalva L. A.

    2016-04-01

    A whitish crystalline-like coating was observed on the surface of the painting "Incêndio", 1990, produced by Emmanuel Nassar and awarded at the 6th Biennial of Cuenca. This work belongs to the Contemporary Art Museum of the University of São Paulo (MAC-USP) and such coating modified the artwork characteristics, causing an unpleasant effect and compromising its exhibition. The choice of the proper conservation and restoration strategies involves the understanding of the degradation process, demanding the identification of the chemical compounds formed on the painting surface, as well as of the other components in the painting. The results here obtained from Raman and optical microscopies, FTIR-ATR, SEM-EDS and GC-MS, revealed that the efflorescence chemical composition is almost only palmitic acid, with minor contents of stearic acid and their methyl esters, and that the paints are composed by chrome yellow, amorphous carbon and toluidine red pigment; an aluminum silicate filler in the black paint applied on the aluminum ground was also detected. Hierarchical Cluster Analyses (HCA) of the Raman spectra also revealed that the concentration of the efflorescence minor components depends on the paint composition. It was suggested, therefore, that the degradation process resulted from segregation and migration of mainly palmitic acid from the dried paints. Restoration methodologies used in similar cases, as well as factors that contribute to this process, were discussed.

  6. New Proposal of Setal Homology in Schizomida and Revision of Surazomus (Hubbardiidae) from Ecuador

    PubMed Central

    2016-01-01

    The homology of three somatic systems in Schizomida is studied yielding the following results: (1) proposal of homology and chaetotaxy of abdominal setae in Surazomus; (2) revision of the cheliceral chaetotaxy in Schizomida, with suggestion of new homology scheme between Hubbardiidae and Protoschizomidae, description of a new group of setae in Hubbardiinae (G7), and division of setae group 5 in two subgroups, G5A and G5B; (3) proposal of segmental homology between trimerous and tetramerous female flagellum in Hubbardiinae with association of segment III of tri-segmented species to segments III + IV of tetra-segmented species. Considerations about the dorsal microsetae on the male flagellum are made. The genus Surazomus in Ecuador is revised. The sympatric species Surazomus palenque sp. nov. and S. kitu sp. nov. (Ecuador, Pichincha) are described and illustrated. The female of S. cuenca (Rowland and Reddell, 1979) is described, with two new distributional records for the species. Surazomus cumbalensis (Kraus, 1957) is recorded for the first time from Ecuador (Pichincha). PMID:26863017

  7. New Proposal of Setal Homology in Schizomida and Revision of Surazomus (Hubbardiidae) from Ecuador.

    PubMed

    Manzanilla, Osvaldo Villarreal; de Miranda, Gustavo Silva; Giupponi, Alessandro Ponce de Leão

    2016-01-01

    The homology of three somatic systems in Schizomida is studied yielding the following results: (1) proposal of homology and chaetotaxy of abdominal setae in Surazomus; (2) revision of the cheliceral chaetotaxy in Schizomida, with suggestion of new homology scheme between Hubbardiidae and Protoschizomidae, description of a new group of setae in Hubbardiinae (G7), and division of setae group 5 in two subgroups, G5A and G5B; (3) proposal of segmental homology between trimerous and tetramerous female flagellum in Hubbardiinae with association of segment III of tri-segmented species to segments III + IV of tetra-segmented species. Considerations about the dorsal microsetae on the male flagellum are made. The genus Surazomus in Ecuador is revised. The sympatric species Surazomus palenque sp. nov. and S. kitu sp. nov. (Ecuador, Pichincha) are described and illustrated. The female of S. cuenca (Rowland and Reddell, 1979) is described, with two new distributional records for the species. Surazomus cumbalensis (Kraus, 1957) is recorded for the first time from Ecuador (Pichincha). PMID:26863017

  8. New Proposal of Setal Homology in Schizomida and Revision of Surazomus (Hubbardiidae) from Ecuador.

    PubMed

    Manzanilla, Osvaldo Villarreal; de Miranda, Gustavo Silva; Giupponi, Alessandro Ponce de Leão

    2016-01-01

    The homology of three somatic systems in Schizomida is studied yielding the following results: (1) proposal of homology and chaetotaxy of abdominal setae in Surazomus; (2) revision of the cheliceral chaetotaxy in Schizomida, with suggestion of new homology scheme between Hubbardiidae and Protoschizomidae, description of a new group of setae in Hubbardiinae (G7), and division of setae group 5 in two subgroups, G5A and G5B; (3) proposal of segmental homology between trimerous and tetramerous female flagellum in Hubbardiinae with association of segment III of tri-segmented species to segments III + IV of tetra-segmented species. Considerations about the dorsal microsetae on the male flagellum are made. The genus Surazomus in Ecuador is revised. The sympatric species Surazomus palenque sp. nov. and S. kitu sp. nov. (Ecuador, Pichincha) are described and illustrated. The female of S. cuenca (Rowland and Reddell, 1979) is described, with two new distributional records for the species. Surazomus cumbalensis (Kraus, 1957) is recorded for the first time from Ecuador (Pichincha).

  9. New host, geographic records, and histopathologic studies of Angiostrongylus spp (Nematoda: Angiostrongylidae) in rodents from Argentina with updated summary of records from rodent hosts and host specificity assessment.

    PubMed

    Robles, María del Rosario; Kinsella, John M; Galliari, Carlos; Navone, Graciela T

    2016-03-01

    To date, 21 species of the genus Angiostrongylus (Nematoda: Angiostrongylidae) have been reported around the world, 15 of which are parasites of rodents. In this study, new host, geographic records, and histopathologic studies of Angiostrongylus spp in sigmodontine rodents from Argentina, with an updated summary of records from rodent hosts and host specificity assessment, are provided. Records of Angiostrongylus costaricensis from Akodon montensis and Angiostrongylus morerai from six new hosts and geographical localities in Argentina are reported. The gross and histopathologic changes in the lungs of the host species due to angiostrongylosis are described. Published records of the genus Angiostrongylus from rodents and patterns of host specificity are presented. Individual Angiostrongylus species parasitise between one-19 different host species. The most frequent values of the specificity index (STD) were between 1-5.97. The elevated number of host species (n = 7) of A. morerai with a STD = 1.86 is a reflection of multiple systematic studies of parasites from sigmodontine rodents in the area of Cuenca del Plata, Argentina, showing that an increase in sampling effort can result in new findings. The combination of low host specificity and a wide geographic distribution of Angiostrongylus spp indicates a troubling epidemiological scenario although, as yet, no human cases have been reported.

  10. Investigation on the hazing of a Brazilian contemporary painting.

    PubMed

    Puglieri, Thiago S; Lavezzo, Ariane S; dos Santos, Isabela F S; de Faria, Dalva L A

    2016-04-15

    A whitish crystalline-like coating was observed on the surface of the painting "Incêndio", 1990, produced by Emmanuel Nassar and awarded at the 6th Biennial of Cuenca. This work belongs to the Contemporary Art Museum of the University of São Paulo (MAC-USP) and such coating modified the artwork characteristics, causing an unpleasant effect and compromising its exhibition. The choice of the proper conservation and restoration strategies involves the understanding of the degradation process, demanding the identification of the chemical compounds formed on the painting surface, as well as of the other components in the painting. The results here obtained from Raman and optical microscopies, FTIR-ATR, SEM-EDS and GC-MS, revealed that the efflorescence chemical composition is almost only palmitic acid, with minor contents of stearic acid and their methyl esters, and that the paints are composed by chrome yellow, amorphous carbon and toluidine red pigment; an aluminum silicate filler in the black paint applied on the aluminum ground was also detected. Hierarchical Cluster Analyses (HCA) of the Raman spectra also revealed that the concentration of the efflorescence minor components depends on the paint composition. It was suggested, therefore, that the degradation process resulted from segregation and migration of mainly palmitic acid from the dried paints. Restoration methodologies used in similar cases, as well as factors that contribute to this process, were discussed.

  11. Titanosaur Osteoderms from the Upper Cretaceous of Lo Hueco (Spain) and Their Implications on the Armor of Laurasian Titanosaurs

    PubMed Central

    Vidal, Daniel; Ortega, Francisco; Sanz, José Luis

    2014-01-01

    Titanosaurs are the only sauropod dinosaurs known to bear a dermal armor. Their osteoderms are relatively rare finds, with few more than a hundred specimens recovered worldwide. Also, little is known about their intra-individual, intra-specific or inter-specific variability. The macrovertebrate site of Lo Hueco (Upper Cretaceous; Cuenca, Spain) has yielded several complete specimens of osteoderms, some associated with fairly articulated specimens. They are all variations of the morphotype known as bulb and root. The presence of only this morphotype in Europe, which is considered as the primitive condition among titanosaurs, seems to indicate that the known Upper Cretaceous Laurasian titanosaurs only bore these referred bulb and root osteoderms. An eliptic Fourier analysis on the outline of complete specimens from this morphotype reveals: i) that they truly are part of a morphological cline; and ii) the existence of a consistent correlation between the outline and the morphology of the bulb. Such variation along a cline is more consistent with intra-individual rather than inter-specific variation. The osteoderms associated with a single titanosaur individual from Lo Hueco reinforce this hypothesis. PMID:25118985

  12. [Spoilage of a recreational area due to the effects of a sewage dump].

    PubMed

    Streitenberger, M E; Baldini, M D

    2010-01-01

    Maldonado is the only municipal bathing resort in Bahía Blanca. Its pool receives water from the estuary of Bahia Blanca. The so-called "Planta de Tratamiento de Líquidos Cloacales para la Tercera Cuenca" located nearby, started to operate in September 2008. It is known that the use of fecal contaminated waters increases the disease risk in the population. The aim of this work was to compare current data with the results obtained in previous studies carried out in the Maldonado bathing resort. Five stations were established to assess the presence of Escherichia coli and Enterococcus spp. Results showed an increase in E. coli counts in the area of interest. The results obtained both in the pool and at the floodgate during the period 2008-2009 showed that fecal indicators in the samples exceeded the levels required for recreational waters by approximately 80%. During time the sampling lasted, the treatment plant did not work properly. Therefore, it is necessary for the involved authorities to design the right strategies to ensure the proper operation of the plant, and to raise general awareness of environmental and health issues.

  13. [Risk factors for arterial hypertension in the adult population of an urban region of Ecuador].

    PubMed

    Ortiz-Benavides, Rina Elizabeth; Torres-Valdez, Maritza; Sigüencia-Cruz, Wilson; Añez-Ramos, Roberto; Salazar-Vílchez, Juan; Rojas-Quintero, Joselyn; Bermúdez-Pirela, Valmore

    2016-06-01

    Objectives . To determine the risk factors for arterial hypertension (HTN) in the adult resident population of the city of Cuenca, Ecuador Materials and methods A cross-sectional analytical study of adults selected via multistage random sampling who underwent clinical, anthropometric, and laboratory evaluations. The diagnosis of HTN was defined according to the JNC-7 criteria. A multiple logistic regression model was performed Results A total of 318 persons were included. The prevalence of HTN was 25.8% (males: 27.2% vs. females: 24.7%; p = 0.617). In the multiple logistic regression model, the risk factors for HTN were age > 60 years (OR, 8.68; 95% CI, 3.56-21.14; p < 0.001), obesity according to body mass index (OR, 2.36; 95% CI, 1.04-5.70; p = 0.042), high caloric intake (OR, 2.06; 95% CI, 1.01- 4.53; p = 0.044), and family history of HTN (OR, 1.58; 95% CI, 1.02-2.90; p = 0.040) Conclusions The presence of HTN in this population is associated with both intrinsic and environmental factors, which should be considered in routine evaluations to ensure its early identification and control. PMID:27656923

  14. Water infiltration and hydraulic conductivity in a natural Mediterranean oak forest: impacts of hydrology-oriented silviculture on soil hydraulic properties

    NASA Astrophysics Data System (ADS)

    Di Prima, Simone; Bagarello, Vincenzo; Bautista, Inmaculada; Cerdà, Artemi; Cullotta, Sebastiano; del Campo, Antonio; González-Sanchis, María; Iovino, Massimo; Maetzke, Federico

    2016-04-01

    :10.1016/j.compag.2015.09.022 Di Prima, S., Lassabatere, L., Bagarello, V., Iovino, M., Angulo-Jaramillo, R., 2016. Testing a new automated single ring infiltrometer for Beerkan infiltration experiments. Geoderma 262, 20-34. doi:10.1016/j.geoderma.2015.08.006 González-Sanchis, M., del Campo, A., Lidón, A., Lull, C., Bautista, I., García-Prats, A., Francés, F., others, 2015. Incorporación de criterios eco-hidrológicos en la gestión forestal: adaptación a la escasez de agua de una masa marginal de encina. Cuadernos de la Sociedad Española de Ciencias Forestales. Hibbert, A.R., 1983. Water Yield Improvement Potential by Vegetation Management on Western Rangelands1. JAWRA Journal of the American Water Resources Association 19, 375-381. doi:10.1111/j.1752-1688.1983.tb04594.x Lassabatère, L., Angulo-Jaramillo, R., Soria Ugalde, J.M., Cuenca, R., Braud, I., Haverkamp, R., 2006. Beerkan Estimation of Soil Transfer Parameters through Infiltration Experiments - BEST. Soil Science Society of America Journal 70, 521. doi:10.2136/sssaj2005.0026 Lewis, D., Singer, M.J., Dahlgren, R.A., Tate, K.W., 2000. Hydrology in a California oak woodland watershed: a 17-year study. Journal of Hydrology 240, 106-117. doi:10.1016/S0022-1694(00)00337-1 Logsdon, S.D., Jaynes, D.B., 1996. Spatial Variability of Hydraulic Conductivity in a Cultivated Field at Different Times. Soil Science Society of America Journal 60, 703. doi:10.2136/sssaj1996.03615995006000030003x Molina, A.J., del Campo, A.D., 2012. The effects of experimental thinning on throughfall and stemflow: A contribution towards hydrology-oriented silviculture in Aleppo pine plantations. Forest Ecology and Management 269, 206-213. doi:10.1016/j.foreco.2011.12.037 Touma, J., Voltz, M., Albergel, J., 2007. Determining soil saturated hydraulic conductivity and sorptivity from single ring infiltration tests. European Journal of Soil Science 58, 229-238. doi:10.1111/j.1365-2389.2006.00830.x Zhang, L., Dawes, W.R., Walker, G.R., 2001

  15. Fotometría de imágenes CCD insuficientemente muestreadas

    NASA Astrophysics Data System (ADS)

    Ostrov, P. G.

    Se enfrenta el problema de la fotometría de imágenes CCD con una escala inadecuada (fwhm menor o igual que el tamaño de un pixel) y psf fuertemente variable con la posición. Se analiza, en particular, la aplicabilidad de una táctica propuesta por Massey, consistente en eliminar las vecinas débiles (utilizando una psf rudimentaria) para luego efectuar una fotometría de apertura sobre las estrellas brillantes. Se determina, mediante experimentos numéricos, la precisión alcanzada mediante esta técnica.

  16. [Experience in molecular diagnostic in hereditary neuropathies in a pediatric tertiary hospital].

    PubMed

    Fernández-Ramos, Joaquín A; López-Laso, Eduardo; Camino-León, Rafael; Gascón-Jiménez, Francisco J; Jiménez-González, M Dolores

    2015-12-01

    Introduccion. La enfermedad de Charcot-Marie-Tooth (CMT) es la neuropatia hereditaria sensitivomotora mas frecuente. Avances en el diagnostico molecular han incrementado las posibilidades diagnosticas de estos pacientes. Pacientes y metodos. Estudio retrospectivo de 36 casos pediatricos diagnosticados de CMT en un centro terciario en el periodo 2003-2015. Resultados. Se identificaron 16 pacientes con CMT1A por una duplicacion en PMP22; dos casos se diagnosticaron de neuropatia hereditaria con predisposicion a paralisis por presion, uno de ellos con una mutacion puntual en PMP22; un varon con un fenotipo leve desmielinizante se diagnostico de CMTX1 por mutacion en GJB1; un paciente con una hipotonia paralitica en el nacimiento y un patron axonal por mutacion en MFN2; un paciente de origen rumano se diagnostico de CMT4D por una mutacion en el gen NDRG1; una paciente con una atrofia muscular espinal congenita distal con neuropatia axonal leve asociada por mutacion en el gen TRPV4; tres niñas de una familia consanguinea de etnia gitana se diagnosticaron de CMT axonal con descargas neuromiotonicas por una mutacion en el gen HINT1; 12 pacientes no tienen diagnostico molecular actualmente, cuatro de ellos de etnia gitana. Conclusiones. CMT1A predomino en nuestra serie (44%), como corresponde a la bibliografia. Destacamos la descripcion de una paciente con una mutacion en TRPV4 recientemente descrita como causa de CMT2C y tres casos de una misma familia consanguinea gitana con la misma mutacion en el gen HINT1 recientemente publicada como causa de neuropatia axonal con neuromiotonia autosomica recesiva (AR-CMT2). El porcentaje de casos sin diagnostico molecular es similar al de grandes series europeas.

  17. Accidentes en plantas nucleares de electricidad y el riesgo de cáncer

    Cancer.gov

    Hoja informativa acerca de los riesgos del cáncer asociados con accidentes en plantas nucleares de electricidad. Incluye información para pacientes con cáncer que viven en una zona que puede haber sido afectada por un accidente en una planta nuclear.

  18. Fatiga (PDQ®)—Versión para profesionales de salud

    Cancer.gov

    Resumen de información revisada por expertos acerca de la fatiga, una afección caracterizada por extremo cansancio e incapacidad para funcionar por la falta de energía, que a menudo se observa como una complicación del cáncer y su tratamiento.

  19. Cigarrillos de mentol | Smokefree Español

    Cancer.gov

    ¿Qué es el mentol? El mentol es una sustancia encontrada naturalmente en las plantas de menta, tales como la menta fresca y la hierbabuena. Deja una sensación refrescante y se usa frecuentemente para aliviar el dolor y la irritación leve, y para prevenir infecciones [1].

  20. Desafíos de la ingeniería -- El Telescopio Espacial James Webb

    NASA Video Gallery

    Cómo colocas un telescopio del tamaño de una cancha de tenis en un cohete ancho como una camioneta? Este es el tipo de preguntas que la gente de la NASA responde acerca del Telescopio Espacial Jame...

  1. El Observatorio Gemini - Status actual

    NASA Astrophysics Data System (ADS)

    Levato, H.

    Se hace una breve descripción de la situación actual del Observatorio Gemini y de las últimas decisiones del Board para incrementar la eficiencia operativa. Se hace también una breve referencia al uso argentino del observatorio.

  2. Aprendiendo de los errores del pasado

    NASA Video Gallery

    Fernando Abilleira, analista de trayectoria de la NASA para la Oficina de Exploración de Marte, comenta por qué el aterrizaje de una nave espacial en Marte requiere una precisión increíble y hasta ...

  3. The Universidad Nacional Abierta of Venezuela. A Case Study in Distance Learning Systems.

    ERIC Educational Resources Information Center

    Friedman, H. Z.

    A brief description of the country of Venezuela (geography, population, economy, internal communications, and politics) and its educational system introduce a description of the Universidad Nacional Abierta (UNA). The UNA was opened in July 1978 to expand the national system of higher education by the use of distance learning techniques. These…

  4. Fatiga (PDQ®)—Versión para pacientes

    Cancer.gov

    Resumen de información revisada por expertos acerca de la fatiga, una afección caracterizada por extremo cansancio e incapacidad para funcionar por la falta de energía, que a menudo se observa como una complicación del cáncer y su tratamiento.

  5. Perspectives on Official English. The Campaign for English as the Official Language of the USA.

    ERIC Educational Resources Information Center

    Adams, Karen L., Ed.; Brink, Daniel T., Ed.

    Essays on the campaign to establish English as the United States' official language include: "Official Languages and Language Planning" (Richard Ruiz); "Una lingua, una patria?: Is Monolingualism Beneficial or Harmful to a Nation's Unity?" (David F. Marshall and Roseann D. Gonzalez); "Canadian Perspectives on Official English" (Joseph E. Magnet);…

  6. Hacer frente - Obtener cuidados médicos de seguimiento

    Cancer.gov

    Información sobre los cuidados médicos de seguimiento después del tratamiento del cáncer. Trata sobre su plan de cuidados de seguimiento, cómo obtener un plan para el bienestar e incluye una guía para una vida saludable.

  7. [Neuroethics as the neuroscience of ethics].

    PubMed

    Álvarez-Díaz, Jorge Alberto

    2013-10-16

    Introduccion. El desarrollo que han tenido las neurociencias ha avanzado de una manera rapida y espectacular. Puntos clave para ello son la introduccion de las tecnicas de neuroimagen funcional y el empuje del proyecto 'decada del cerebro'. Este desarrollo tambien ha permitido que surjan nuevas disciplinas como la neuroetica. Desarrollo. Quienes han trabajado en neuroetica pueden dividirse en tres grupos (neurorreduccionistas, neuroescepticos y neurocriticos), y cada grupo tiene diferentes posturas de lo que es la neuroetica, con varios alcances y limitaciones en sus propuestas. Conclusiones. La neuroetica es una disciplina que antes del año 2002 se entiende en exclusiva como una etica de la neurociencia (una rama de la bioetica) y, a partir de esa fecha, se entiende tambien como una neurociencia de la etica (una nueva disciplina). El neurorreduccionismo propone que toda la vida etica tiene una base cerebral que determina los actos eticos, el neuroescepticismo argumenta que no se puede considerar la neurociencia como una funcion normativa y el neurocriticismo considera que los avances neurocientificos no se pueden ignorar y se deben tomar en cuenta de algun modo para la elaboracion de las teorias eticas.

  8. Clinical and diagnostic problems of desmoid-type fibromatosis of the mesentery: case report and review of the literature.

    PubMed

    La Greca, Gaetano; Santangelo, Antonio; Primo, Stefano; Sofia, Maria; Latteri, Saverio; Russello, Domenico; Magro, Gaetano

    2014-12-12

    In accordo con la “World Health Organization”, il tumore desmoide viene definito come una “proliferazione di tipo clonale dei fibroblasti che origina dai tessuti molli posti più in profondità e che risulta essere caratterizzata da una crescita infiltrante con la tendenza a dare delle recidive locali ma con l’incapacità di metastatizzare”. Noi riportiamo il caso di una giovane donna di 33 anni che presentava una sintomatologia aspecifica, con la presenza di una massa palpabile in sede addominale. La prima diagnosi, eseguita in altra Unità Operativa con US, evidenziava una neoformazione classificata come Leiomioma uterino. Il reperto intraoperatorio durante intervento di isterectomia evidenziava, invece, una neoformazione a partenza dal mesentere. L’esecuzione di due esami bioptici estemporanei non ha portato a nessuna diagnosi di certezza. Veniva quindi eseguita una resezione “en bloc”, allargata con criteri oncologici, della massa, comprendendo digiuno, ileo e colon destro. La diagnosi istologica definitiva è stata poi di Tumore Desmoide. La revisione della letteratura condotta con 25 casi di tumore desmoide del mesentere, ha confermato definitivamente come la diagnosi è molto difficile e quasi mai disponibile prima o durante l’intervento chirurgico. Appare quindi chiaro che la prima scelta di trattamento di questa neoplasia rimane quella chirurgica con margini di resezione R0, pur esistendo la possibilità di un trattamento conservativo farmacologico o radioterapico. Il trattamento del Tumore Desmoide rimane comunque difficile e richiede esperienza ed collaborazione interdisciplinare.

  9. [Inferior vertical nystagmus: is magnetic resonance imaging mandatory?].

    PubMed

    Esteban-Sánchez, Jonathan; Rueda-Marcos, Almudena; Sanz-Fernández, Ricardo; Martín-Sanz, Eduardo

    2016-02-01

    Introduccion. La aparicion de un nistagmo vertical inferior clasicamente obliga a descartar una patologia vascular o de la union craneocervical mediante resonancia magnetica (RM). Estudios recientes demuestran una baja rentabilidad de esta prueba, ya que sugieren que este signo oculomotor puede tener una causa vestibular periferica, sobre todo cuando el paciente presenta un vertigo posicional paroxistico benigno (VPPB) del canal semicircular superior. Objetivo. Comprobar la rentabilidad de la RM en una poblacion de pacientes con nistagmo de posicion vertical inferior. Pacientes y metodos. Estudio retrospectivo de 42 pacientes consecutivos a los que se les realizo una historia clinica, exploracion fisica, y pruebas vestibulares caloricas y rotatorias. A todos ellos se les practico una RM craneal y cervical. Resultados. El 52% de los pacientes con nistagmo de posicion vertical inferior presentaba una clinica y exploracion fisica compatibles con VPPB del canal semicircular superior. La RM fue normal en un 67%, un 26% mostraba datos de espondilopatia y un 5% de microangiopatia cerebral no relacionados con la clinica del paciente. La prevalencia de malformacion de Arnold-Chiari de tipo I fue de un 9% en la poblacion estudiada, sin que nadie tuviera un antecedente reciente de VPPB. Los resultados obtenidos en las pruebas complementarias vestibulares no aportaron informacion adicional para llegar a un diagnostico etiologico. Conclusion. En los pacientes con un VPPB, la RM craneal y las pruebas vestibulares tienen una baja rentabilidad diagnostica, y se debe evaluar la necesidad real de esta prueba con el contexto clinico.

  10. [Reversible porencephalic cyst related to shunt dysfunction].

    PubMed

    Santín-Amo, José M; Rico-Cotelo, María; Serramito-García, Ramón; Gelabert-González, Miguel; Allut, Alfredo G

    2014-03-16

    Introduccion. El tratamiento quirurgico de la hidrocefalia es uno de los procedimientos quirurgicos mas habituales en la neurocirugia pediatrica, y las derivaciones ventriculoperitoneales constituyen una herramienta fundamental en el tratamiento de la hidrocefalia tanto infantil como del adulto. Las complicaciones de las valvulas son relativamente frecuentes, sobre todo en la poblacion pediatrica, y, entre estas, las mas habituales incluyen: las obstrucciones, las desconexiones, el hiperdrenaje y las infecciones. Caso clinico. Niña de 7,5 años, portadora de una valvula ventriculoperitoneal, que presentaba cefalea intermitente. Un estudio con tomografia computarizada demostro una lesion quistica temporal derecha. Tras la revision valvular, la tomografia computarizada evidencio la reduccion del quiste. Conclusiones. La formacion de una cavidad porencefalica es una complicacion poco frecuente. Se relaciona con problemas en el cateter distal en pacientes con ventriculos dilatados y de las que existen escasas referencias en la bibliografia.

  11. Fluorescent protein-based detection of unconjugated bilirubin in newborn serum

    PubMed Central

    Iwatani, Sota; Nakamura, Hajime; Kurokawa, Daisuke; Yamana, Keiji; Nishida, Kosuke; Fukushima, Sachiyo; Koda, Tsubasa; Nishimura, Noriyuki; Nishio, Hisahide; Iijima, Kazumoto; Miyawaki, Atsushi; Morioka, Ichiro

    2016-01-01

    Increased serum levels of unconjugated bilirubin are associated with the development of brain damage in newborns. In current clinical settings, there are no methods for directly determining serum levels of unconjugated bilirubin. UnaG, a fluorescent protein from Japanese eel muscle that specifically binds to unconjugated bilirubin was used in this study. Linear regression analysis was carried out to compare unconjugated bilirubin levels measured by UnaG and conventional bilirubin oxidase methods. Unconjugated bilirubin levels in the serum of newborns who were untreated or treated with phototherapy were compared. Effects of interfering factors in the serum (conjugated bilirubin, hemoglobin, and lipid) on unconjugated bilirubin concentration measured by the UnaG method were also evaluated. Unconjugated bilirubin levels measured by the UnaG method were highly correlated with those determined by the bilirubin oxidase assay. Unconjugated bilirubin levels determined by bilirubin oxidase and UnaG assays were similar in serum samples containing conjugated bilirubin. The performance of the UnaG assay was unaffected by phototherapy and the presence of serum hemoglobin and lipid emulsion. These results demonstrate the clinical applicability of the UnaG method for direct measurement of unconjugated bilirubin levels in newborn serum. PMID:27324682

  12. Rare case of isolated osteochondroma of the zygomatic bone: an endoscopic-assisted approach.

    PubMed

    Romano, Antonio; Dell'Aversana, Giovanni; Corvino, Raffaele; Abbate, Vincenzo; Iaconetta, Giorgio; Califano, Luigi

    2015-11-03

    L’osteocondroma è una neoplasia benigna che nel distretto cranio-facciale colpisce spesso il corpo ed il ramo mandibolare e soltanto di rado può interessare il processo coronoide e l’arco zygomatico. In questo articolo descriviamo un raro caso di osteocondroma isolato dell’osso zygomatico trattato mediante approccio chirurgico intraorale endoscopicamente assistito ed in letteratura non sono riportati altri casi di questa patologia trattati con procedure endoscopicamente assistite. Una donna caucasica di cinquantadue anni, è stata osservata nel nostro reparto nel mese di marzo del 2012, la paziente lamentava dolore in regione zygomatica destra. La tomografia computerizzata (TC) del distretto osseo interessato mostrava una lesione sessile non definita. Il sospetto diagnostico è stato di osteocondroma. L’intervento è stato realizzato in anestesia generale mediante approccio intraorale endoscopicamente assistito. All’esame istologico del campione operatorio è stata confermata la diagnosi di osteocondroma. Nell’immediato post operatorio la paziente non ha presentato edema, dolore o febbre. L’uso dell’endoscopia nel trattamento chirurgico di questa patologia quindi ha consentito di ottenere una maggiore precisione e una maggiore rispetto delle strutture anatomiche. L’approccio intraorale ci garantisce l’assenza di cicatrici visibili e l’ausilio dell’endoscopia ci consente di avere una migliore visione di tutte le strutture anatomiche, una buona gestione della patologia riducendo quindi il rischio di complicanze intraoperatorie quali: fratture patologiche e lesioni del VII nervo cranico.

  13. Analysis of correlation between 24-hour urinary sodium and the degree of blood pressure control in patients with chronic kidney disease and non-chronic kidney disease.

    PubMed

    Koo, Ho Seok; Kim, Yong Chul; Ahn, Shin Young; Oh, Se Won; Kim, Suhnggwon; Chin, Ho Jun

    2014-09-01

    We investigated the association between 24-hr urinary sodium (24UNA) and adequacy of blood pressure (BP) control in patients with chronic kidney disease (CKD) and nonCKD. All data were collected retrospectively by accessing the electrical medical records in patients with 24-hr urine collection and serum creatinine. Enrolled 400 subjects were subgrouped by the amount of 24UNA, or CKD stage. The appropriate BP was defined as BP < 130/80 mmHg for subjects with proteinuria, and BP < 140/90 mmHg for subjects without proteinuria. The mean level of 24UNA was 166±76 mEq/day. The 24UNA group was an independently related factor to diastolic BP as a continuous variable. The rate of appropriate BP control in patients with proteinuria was highest in 24UNA <100 mEq/L (P=0.012). The odds to fail achievement of BP target in subjects with 24UNA≥90 mEq/day was 2.441 (1.249-4.772, P=0.009) higher than that of 24UNA <90 mEq/day among participants with proteinuria. There was difference in the amount of 24UNA between CKD and non-CKD except each stage of CKD group. In conclusion, salt intake estimated by 24-hr urine sodium excretion is a risk factor to achieve appropriate BP control.

  14. Fluorescent protein-based detection of unconjugated bilirubin in newborn serum.

    PubMed

    Iwatani, Sota; Nakamura, Hajime; Kurokawa, Daisuke; Yamana, Keiji; Nishida, Kosuke; Fukushima, Sachiyo; Koda, Tsubasa; Nishimura, Noriyuki; Nishio, Hisahide; Iijima, Kazumoto; Miyawaki, Atsushi; Morioka, Ichiro

    2016-01-01

    Increased serum levels of unconjugated bilirubin are associated with the development of brain damage in newborns. In current clinical settings, there are no methods for directly determining serum levels of unconjugated bilirubin. UnaG, a fluorescent protein from Japanese eel muscle that specifically binds to unconjugated bilirubin was used in this study. Linear regression analysis was carried out to compare unconjugated bilirubin levels measured by UnaG and conventional bilirubin oxidase methods. Unconjugated bilirubin levels in the serum of newborns who were untreated or treated with phototherapy were compared. Effects of interfering factors in the serum (conjugated bilirubin, hemoglobin, and lipid) on unconjugated bilirubin concentration measured by the UnaG method were also evaluated. Unconjugated bilirubin levels measured by the UnaG method were highly correlated with those determined by the bilirubin oxidase assay. Unconjugated bilirubin levels determined by bilirubin oxidase and UnaG assays were similar in serum samples containing conjugated bilirubin. The performance of the UnaG assay was unaffected by phototherapy and the presence of serum hemoglobin and lipid emulsion. These results demonstrate the clinical applicability of the UnaG method for direct measurement of unconjugated bilirubin levels in newborn serum. PMID:27324682

  15. [Waist-hip ratio as a predictor of arterial hypertension risk in children and adolescents].

    PubMed

    González-Jiménez, Emilio; Montero-Alonso, Miguel Ángel; Schmidt-RioValle, Jacqueline

    2013-11-01

    Resumen: Objetivos: Los objetivos de este estudio fueron verificar la existencia de una asociación significativa entre el estado nutricional de los alumnos y los valores del índice de cintura-cadera. En segundo lugar, comprobar una posible correlación entre los valores del índice de cintura-cadera y los niveles de presión arterial sistólica y diastólica. Muestra y metodología: Una población de 1001 adolescentes de entre 9 y 17 años de edad, pertenecientes a 18 centros educativos de las provincias de Granada y Almería. Se realizó una valoración completa del estado nutricional de los alumnos mediante antropometría así como la determinación de la presión arterial a todos los alumnos. Resultados: Los resultados obtenidos confirman una prevalencia de normopeso del 85,01%, frente a una tasa de sobrepeso del 9,99% y de obesidad del 4,99% para ambos sexos y con independencia de la edad. Se encontró una asociación significativa entre el estado nutricional y su relación los valores del índice cintura–cadera (F=118,060; p.

  16. AFLP and MS-AFLP Analysis of the Variation within Saffron Crocus (Crocus sativus L.) Germplasm

    PubMed Central

    Busconi, Matteo; Colli, Licia; Sánchez, Rosa Ana; Santaella, Marcela; De-Los-Mozos Pascual, Marcelino; Santana, Omar; Roldán, Marta; Fernández, José-Antonio

    2015-01-01

    The presence and extent of genetic variation in saffron crocus are still debated, as testified by several contradictory articles providing contrasting results about the monomorphism or less of the species. Remarkably, phenotypic variations have been frequently observed in the field, such variations are usually unstable and can change from one growing season to another. Considering that gene expression can be influenced both by genetic and epigenetic changes, epigenetics could be a plausible cause of the alternative phenotypes. In order to obtain new insights into this issue, we carried out a molecular marker analysis of 112 accessions from the World Saffron and Crocus Collection. The accessions were grown for at least three years in the same open field conditions. The same samples were analysed using Amplified Fragment Length Polymorphism (AFLP) and Methyl Sensitive AFLP in order to search for variation at the genetic (DNA sequence) and epigenetic (cytosine methylation) level. While the genetic variability was low (4.23% polymorphic peaks and twelve (12) effective different genotypes), the methyl sensitive analysis showed the presence of high epigenetic variability (33.57% polymorphic peaks and twenty eight (28) different effective epigenotypes). The pattern obtained by Factorial Correspondence Analysis of AFLP and, in particular, of MS-AFLP data was consistent with the geographical provenance of the accessions. Very interestingly, by focusing on Spanish accessions, it was observed that the distribution of the accessions in the Factorial Correspondence Analysis is not random but tends to reflect the geographical origin. Two clearly defined clusters grouping accessions from the West (Toledo and Ciudad Real) and accessions from the East (Cuenca and Teruel) were clearly recognised. PMID:25885113

  17. Orthologous Allergens and Diagnostic Utility of Major Allergen Alt a 1

    PubMed Central

    Moreno, Antonio; Alcover, Javier; Rodríguez, David; Palacios, Ricardo; Martínez-Naves, Eduardo

    2016-01-01

    Purpose Hypersensitivity to fungi is associated with rhinoconjunctivitis and asthma. For some fungi, such as Alternaria alternata (A. alternata), the symptoms of asthma are persistent, increasing disease severity and the risk of fatal outcomes. There are a large number of species of fungi but knowledge of them remains limited. This, together with the difficulties in obtaining adequate standardized extracts, means that there remain significant challenges in the diagnosis and immunotherapy of allergy associated with fungi. The type of indoor fungi related to asthma/allergy varies according to geographic, climatic, and seasonal factors, making their study difficult. The aim of this study was to determine hypersensitivity to indoor fungi in a population from Cuenca, Spain. Methods Thirty-five patients with symptoms compatible with rhinitis or asthma who showed clear worsening of their symptoms in their homes or workplace were included. In vivo and in vitro tests were made with a battery of fungal allergens, including the species isolated in the home or workplace. Results Ulocladium botrytis (U. botrytis) and A. alternata were the most representative species as a source of home sensitization. These species showed very high concordance in skin tests, specific IgE, and histamine release. The allergen Alt a 1, which was recognized in all patients, was detected in A. alternata, U. botrytis, and Stemphylium botryosum (S. botryosum). Conclusions U. botrytis and A. alternata were the most representative species as a source of home sensitization. Alt a 1 was recognized in all patients and may be considered a non-species-specific allergen that could be used as a diagnostic source of sensitization to some species of the Pleosporaceae family. PMID:27334781

  18. Impact of radar-rainfall error structure on estimated flood magnitude across scales: An investigation based on a parsimonious distributed hydrological model

    NASA Astrophysics Data System (ADS)

    Cunha, Luciana K.; Mandapaka, Pradeep V.; Krajewski, Witold F.; Mantilla, Ricardo; Bradley, Allen A.

    2012-10-01

    The goal of this study is to diagnose the manner in which radar-rainfall input affects peak flow simulation uncertainties across scales. We used the distributed physically based hydrological model CUENCAS with parameters that are estimated from available data and without fitting the model output to discharge observations. We evaluated the model's performance using (1) observed streamflow at the outlet of nested basins ranging in scale from 20 to 16,000 km2 and (2) streamflow simulated by a well-established and extensively calibrated hydrological model used by the US National Weather Service (SAC-SMA). To mimic radar-rainfall uncertainty, we applied a recently proposed statistical model of radar-rainfall error to produce rainfall ensembles based on different expected error scenarios. We used the generated ensembles as input for the hydrological model and summarized the effects on flow sensitivities using a relative measure of the ensemble peak flow dispersion for every link in the river network. Results show that peak flow simulation uncertainty is strongly dependent on the catchment scale. Uncertainty decreases with increasing catchment drainage area due to the aggregation effect of the river network that filters out small-scale uncertainties. The rate at which uncertainty changes depends on the error structure of the input rainfall fields. We found that random errors that are uncorrelated in space produce high peak flow variability for small scale basins, but uncertainties decrease rapidly as scale increases. In contrast, spatially correlated errors produce less scatter in peak flows for small scales, but uncertainty decreases slowly with increasing catchment size. This study demonstrates the large impact of scale on uncertainty in hydrological simulations and demonstrates the need for a more robust characterization of the uncertainty structure in radar-rainfall. Our results are diagnostic and illustrate the benefits of using the calibration-free, multiscale

  19. Analysis of the presence of perfluoroalkyl substances in water, sediment and biota of the Jucar River (E Spain). Sources, partitioning and relationships with water physical characteristics.

    PubMed

    Campo, Julian; Lorenzo, María; Pérez, Francisca; Picó, Yolanda; Farré, Marinel la; Barceló, Damià

    2016-05-01

    The presence, sources and partitioning of 21 perfluoroalkyl substances (PFASs: C4-C14, C16, C18 carboxylate, C4, C6-C10 sulfonates and C8 sulfonamide) were assessed in water, sediment, and biota of the Jucar River basin (E Spain). Considering the three matrices, perfluoropentanoate (PFPeA) and perfluorooctane sulfonate (PFOS) were the most frequent compounds, being remarkable the high occurrence of short-chain PFASs (C≤8), which are intended to replace the long-chain ones in several industrial and commercial applications. In general, all samples were contaminated with at least one PFAS, with the exception of three fish samples. Mean concentrations detected in sediments (0.22-11.5ng g(-1)) and biota (0.63-274µgkg(-1)) samples were higher than those measured in water (0.04-83.1ngL(-1)), which might suggest (bio) accumulation. The occurrence of PFAS is related to urban and industrial discharges (Cuenca city in the upper part of basin, and car's factory, and effluents of the sewage treatment plant (STP) of Alzira, in the lower part). Increasing pollution gradients were found. On the other hand, higher contamination levels were observed after regulation dams of the catchment pointing out their importance in the re-distribution of these contaminants. None of the hazard quotients (HQ) calculated indicate potential risk for the different tropic levels considered (algae, Daphnia sp. and fish). PFAS concentrations found in this study can be considered in acceptable levels if compared to existing Regulatory Legislation and, consequently, they do not pose an immediate human health risk. PMID:26974364

  20. A bizarre, humped Carcharodontosauria (Theropoda) from the lower cretaceous of Spain.

    PubMed

    Ortega, Francisco; Escaso, Fernando; Sanz, José L

    2010-09-01

    Carcharodontosaurs were the largest predatory dinosaurs, and their early evolutionary history seems to be more intricate than was previously thought. Until recently, carcharodontosaurs were restricted to a group of large theropods inhabiting the Late Cretaceous Gondwanan land masses, but in the last few years Laurasian evidence has been causing a reevaluation of their initial diversification. Here we describe an almost complete and exquisitely preserved skeleton of a medium-sized (roughly six metres long) theropod from the Lower Cretaceous series (Barremian stage) Konservat-Lagerstätte of Las Hoyas in Cuenca, Spain. Cladistic analysis supports the idea that the new taxon Concavenator corcovatus is a primitive member of Carcharodontosauria, exhibiting two unusual features: elongation of the neurapophyses of two presacral vertebrae forming a pointed, hump-like structure and a series of small bumps on the ulna. We think that these bumps are homologous to quill knobs present on some modern birds; the knobs are related to the insertion area of follicular ligaments that anchor the roots of the flight feathers (remiges) to the arm. We propose that Concavenator has integumentary follicular structures inserted on the ulna, as in modern birds. Because scales do not have follicles, we consider the structures anchored to the Concavenator arms to be non-scale skin appendages homologous to the feathers of modern birds. If this is true, then the phylogenetic bracket for the presence of non-scale skin structures homologous to feathers in theropod dinosaurs would be extended to the Neotetanurae, enlarging the scope for explaining the origin of feathers in theropods. PMID:20829793

  1. Factorial validation of the Attitudes toward Women Scale for Adolescents (AWSA) in assessing sexual behaviour patterns in Bolivian and Ecuadorian adolescents

    PubMed Central

    Jaruseviciene, Lina; De Meyer, Sara; Decat, Peter; Zaborskis, Apolinaras; Degomme, Olivier; Rojas, Mildrett; Hagens, Salazar Arnold; Auquilla, Nancy; Vega, Bernardo; Gorter, Anna C.; Orozco, Miguel; Lazarus, Jeffrey V.

    2014-01-01

    Background Adolescents’ health is greatly influenced by social determinants, including gender norms. Although research has shown that there is an association between gender attitudes and adolescents’ sexual behaviour, few studies have assessed this relationship carefully. The Attitudes toward Women Scale for Adolescents (AWSA) is widely used to assess gender attitudes among adolescents; however, to our knowledge it has not been applied in Latin America. Objective To apply AWSA in Latin America for the first time, to perform a factorial validation of this scale and to assess the relationship of gender attitudes and sexual behaviour in Bolivian and Ecuadorian adolescents. Design This cross-sectional study was carried out in 2011 among 14–18 year olds in 20 high schools in Cochabamba (Bolivia) and six in Cuenca (Ecuador) as a part of a larger project. Schools were purposively selected. A Spanish version of the 12-item AWSA was employed for this study. The assessed aspects of adolescent sexual behaviour were: reported sexual intercourse, reported positive experience during last sexual intercourse and reported current use of contraception. The psychometric properties of AWSA were investigated, and both explanatory and confirmatory factorial analyses were performed. Results The number of questionnaires included in the analysis was 3,518 in Bolivia and 2,401 in Ecuador. A factorial analysis of AWSA resulted in three factors: power dimension (PD), equality dimension (ED) and behavioural dimension (BD). ED showed the highest correlates with adolescent sexual behaviour. Higher scores of this dimension were associated with a more positive experience of sexual relationships, a higher current use of modern contraception and greater sexual activity among girls. Conclusions This study revealed a three-factorial structure of AWSA and demonstrated that by employing factors, the sensitivity of AWSA increases as compared to using the scale as a whole to assess sexual behaviour

  2. Interactive effects of water diversion and climate change for juvenile chinook salmon in the lemhi river basin (USA.).

    PubMed

    Walters, Annika W; Bartz, Krista K; McClure, Michelle M

    2013-12-01

    The combined effects of water diversion and climate change are a major conservation challenge for freshwater ecosystems. In the Lemhi Basin, Idaho (U.S.A.), water diversion causes changes in streamflow, and climate change will further affect streamflow and temperature. Shifts in streamflow and temperature regimes can affect juvenile salmon growth, movement, and survival. We examined the potential effects of water diversion and climate change on juvenile Chinook salmon (Oncorhynchus tshawytscha), a species listed as threatened under the U.S. Endangered Species Act (ESA). To examine the effects for juvenile survival, we created a model relating 19 years of juvenile survival data to streamflow and temperature and found spring streamflow and summer temperature were good predictors of juvenile survival. We used these models to project juvenile survival for 15 diversion and climate-change scenarios. Projected survival was 42-58% lower when streamflows were diverted than when streamflows were undiverted. For diverted streamflows, 2040 climate-change scenarios (ECHO-G and CGCM3.1 T47) resulted in an additional 11-39% decrease in survival. We also created models relating habitat carrying capacity to streamflow and made projections for diversion and climate-change scenarios. Habitat carrying capacity estimated for diverted streamflows was 17-58% lower than for undiverted streamflows. Climate-change scenarios resulted in additional decreases in carrying capacity for the dry (ECHO-G) climate model. Our results indicate climate change will likely pose an additional stressor that should be considered when evaluating the effects of anthropogenic actions on salmon population status. Thus, this type of analysis will be especially important for evaluating effects of specific actions on a particular species. Efectos Interactivos de la Desviación del Agua y el Cambio Climático en Individuos Juveniles de Salmón Chinook en la Cuenca del Río Lemhi (E.U.A.).

  3. [PREVALENCE OF THINNESS, OVERWEIGHT AND OBESITY AMONG 4-TO-6-YEAR-OLD SPANISH SCHOOLCHILDREN IN 2013; SITUATION IN THE EUROPEAN CONTEXT].

    PubMed

    González García, Alberto; Álvarez Bueno, Celia; Lucas de la Cruz, Lidia; Sánchez López, Mairena; Solera Martínez, Montserrat; Díez Fernández, Ana; Martínez Vizcaíno, Vicente

    2015-10-01

    Introducción y objetivos: tanto el exceso de peso como la delgadez se relacionan con diversos problemas de salud que pueden continuar hasta la edad adulta. Los objetivos de este estudio fueron estimar la prevalencia de delgadez, sobrepeso y obesidad en escolares de 4-6 años de las provincias de Cuenca y Ciudad Real (España), mediante criterios del Grupo Internacional de Trabajo sobre Obesidad y de la Organización Mundial de la Salud, y comparar estas cifras con otros estudios europeos. Métodos: estudio observacional-transversal que incluyó a 1.585 escolares realizado en septiembre de 2013. Las mediciones de peso y talla fueron realizadas por enfermeras entrenadas y mediante procedimientos estandarizados. El estatus ponderal se definió según los criterios del Grupo Internacional de Trabajo sobre Obesidad y la Organización Mundial de la Salud. Resultados: según criterios del Grupo Internacional de Trabajo sobre Obesidad, la prevalencia de delgadez, sobrepeso y obesidad fue del 20,51%, 11,84% y 8,58%, respectivamente; y del 3,97%, 13,92% y 10,79% cuando se utilizaron los criterios de la Organización Mundial de la Salud. No se encontraron diferencias estadísticamente significativas por sexo ni provincia para ninguna categoría de estatus ponderal. Para ambos criterios, la prevalencia de delgadez fue menor a medida que aumentaba la edad, mientras que la prevalencia de sobrepeso/obesidad fue mayor. Conclusiones: la prevalencia de exceso de peso podría haber tocado techo en España, aunque continúa siendo un importante problema de salud pública. El aumento de la prevalencia de bajo peso debería ocupar un lugar relevante en las intervenciones de salud pública.

  4. The interaction between parent material, climate and volcanism as the major soil forming factor in the Ecuadorian high Andes region

    NASA Astrophysics Data System (ADS)

    Buytaert, W.; Duyck, H.; Dercon, G.; Deckers, J.; Wyseure, G.

    2003-04-01

    The high Andes region of Ecuador and Colombia (>3500m a.s.l.) is covered by the so-called páramo ecosystem, characterised by a cold climate, a typical grass or small shrub vegetation and volcanic soils. Soil profiles of the paramo in the Austro Ecuatoriano, South Ecuador, were studied in order to reveal genetic relationships with geology, volcanic ash deposits, climate and land use. A gradual diminuation of Andic properties was found, related to the distance of the pedon to the active volcanoes of the Northern Volcanic Zone of the Andes. Pedons in the north of the region, closer to these volcanoes (Sangay, Tungurahua) are classified as non-allophanic Histic Andosols. The influence of the vicinity of the volcanoes leads to a higher oxalate extractable aluminium and iron. The genesis of the Andosols seems to be strongly related to the presence and thickness of volcanic ash depositions. The limit of these depositions is situated south of the city of Cuenca. Pedons further to the south are classified as Histosols. However, they also have clear Andic properties. Several differences in chemical properties between the Western and Eastern cordilleras where found, that are most probable related with a difference in mother material, and maybe also a different climatic regime. Correlation of the chemical properties with land use reveals that no chemical differences can be found that are invoked by occupying natural Andosols for agricultural purposes, within the first five years of cultivation. At last, the conclusions were used to revisit the World Reference Base for Soil Resources in order to sharpen up differenciation between Andosols and Histosols.

  5. Evolution and Intensity of Hail in Wheat and Barley

    NASA Astrophysics Data System (ADS)

    Bernaldo de Quirós, I.; Saa Requejo, A.; Tarquis, A. M.; Burgaz, F.

    2009-04-01

    The cereals have represented a very important place in the agriculture along the history. The current expansion and growth of the energetic markets are changing the role of the agriculture. The cereals, with other crops, are becoming more significant as suppliers of raw material for the production of biofuels. The purpose of the present project is to carry out a study about the hail in cereals. The survey is focus in wheat and barley as they both represent the highest cereal production of Spain. Four provinces have been chosen (those with the values of production are higher): Burgos and Zaragoza for the wheat and Cuenca and Valladolid for the barley. The materials and methods that we had available for the study of the evolution and intensity of the damages for hail include an analysis of the correlation between the ratios of agricultural insurances provided by ENESA and the number of days of annual hail (from 1981 to 2007). At the same time, one weather station per province was selected by the longest more complete data recorded (from 1963 to 2007) to perform an analysis of monthly time series of the number of hail days (HD). The results of the study show us that there is no relation between the ratio of the agricultural insurances and the number of hail days. This can be due to the large area of which the ratio refers to and the low density of meteorological stations to cover the hail that is registered in every of the four provinces. On the other hand, it is observed that monthly HD time series don't show a change in pattern except in one of the stations studied. Therefore with the information available we cannot state that there are clear changes in the evolution of the hail registered for each province.

  6. Analysis of the impact of water shortage on irrigated fruit yields in Spain

    NASA Astrophysics Data System (ADS)

    Bielza, M.; Maestro, T.; Algarra, A.; Garrido, A.

    2012-04-01

    Fruit production is strongly dependent on irrigation water in Spain. In contrast with annual crops, fruit producers are concerned not only with current year yields but also with future years' production or even with the potential loss of a strong investment in the case of death of the plantation. According to climate change predictions, extreme precipitation events -- floods and droughts -- are likely to increase in the future. This means that there might be a potential demand for hydrological drought insurance among fruit producers. This study tests whether hydrological drought has effectively affected fruit yields in the last 30 years in Spain. Water management decisions are taken in Spain according to drought indicators, called State Indices, established in the Drought Action Plans in the different river basins in Spain. These indicators are mainly based on reservoir stocks and inflows in regulated sub-basins and on river flows in non-regulated sub-basins. However, in some cases they are also based on ground water stocks and on water transfers between basins depending on the case. We analyze the relationship between the State Indices at their lowest levels and the yields of non-citrus fruit (apples, pears, peaches, apricots, plums and cherries) in the most important producing areas in Spain (Cuenca del Ebro, del Segura, del Júcar y del Guadiana). Preliminary results in some of the regions suggest that hydrological drought has caused some yield decrease, but it has not been so far so strong as to compromise fruit plantations. Keywords: Hydrological drought, drought indicators, fruit yields, Spain

  7. Pedotransfer functions for estimating saturated hydraulic conductivity: implications for modeling storm flow generation

    NASA Astrophysics Data System (ADS)

    Sobieraj, J. A.; Elsenbeer, H.; Vertessy, R. A.

    2001-10-01

    We evaluated the performance of nine published pedotransfer functions (PTFs) for estimating saturated hydraulic conductivity ( Ks) in modeling the stormflow generated in a rainforest catchment. Using available input data consisting of particle size distribution, bulk density, and saturated moisture content information, these empirically-based PTFs were found to be inadequate in estimating Ks for this catchment. At shallow depths (0-0.1 m), PTFs commonly underestimated Ks by variable amounts with the exception of the Jabro PTF, which either overestimated Ks or was not significantly different from measured values. At subsequent depths (0.1-0.4 m), PTFs typically overestimated Ks by variable amounts, the exception being the Campbell and Shiozawa PTF, which typically underestimated Ks. We used TOPOG_SBM to model storm flow generation by replacing measured Ks values from the 0 to 0.1 m depth interval with PTF-estimated Ks values. The simulation set using Rosetta SSC (PTF with input of % sand, silt, clay) Ks values overestimated runoff for all events, and overland flow occurred across the entire catchment for all events. Simulations using Rosetta SSC-BD (PTF with input of % sand, silt, clay, and bulk density) Ks values predicted hydrograph attributes as well as the simulations using measured Ks values, but the Rosetta SSC-BD simulation set predicted a much larger spatial frequency of overland flow across the catchment than the measured Ks simulation set. Model simulations using the Jabro PTF, which generated large estimates of Ks, produced hydrographs that overestimated total runoff and time of rise but underestimated peak runoff. This model predicted much less overland flow than other models. Currently published PTFs used in this study are inadequate in estimating Ks for the La Cuenca catchment, which in turn make them inadequate for modeling storm flow generation. Enhanced model performance could likely be achieved by utilizing PTFs that better account for the

  8. Vegetation influence on runoff and sediment yield in the Andes region: observation and modelling

    NASA Astrophysics Data System (ADS)

    Braud, I.; Vich, A. I. J.; Zuluaga, J.; Fornero, L.; Pedrani, A.

    2001-12-01

    The Precordillera of the Andes Mountains (Mendoza, Argentina) is prone to severe flash floods, caused by heavy rainfall events of short duration and high intensities. Two catchments were instrumented in order to study the rainfall-runoff process and soil management impact on runoff and/or sediment yield. In the first catchment (Divisadero Largo, DL, 5.47 km 2), characterized by a large heterogeneity of surface geology, a data set of about 50 rainfall-runoff events covering the 1983-1994 period was available. Vegetation cover changed significantly after the catchment was enclosed in 1989-1990. This change was successfully mapped using Landsat TM image analysis. The second catchment (Cuenca Aluvional Piloto, CAP, 35 ha), the soil of which was homogeneous, was instrumented in 1992 for total runoff and sediment yield measurements. Three small plots of 3×10 m 2 (bare soil, 42 and 60% vegetation cover) and three sub catchments (2-4.5 ha) were delimited with different average vegetation cover. Data analysis showed the difficulty in relating runoff volume and sediment yield to simple descriptors of the catchments such as the average slope and/or the average vegetation cover. The DL and CAP catchments were modelled using the Areal Non Point Source Watershed Environment Response Simulation (ANSWERS) model with contrasting results. Good agreement between model and observation could be achieved after calibration on the 3×10 m 2 plots, but the model failed to correctly reproduce runoff on the three 2-4.5 ha CAP sub-catchments using the values calibrated on the small plots. Better results were obtained on the larger and heterogeneous DL basin, where surface geology variations and rainfall variability seemed to be the most influential factors. In this case, no sensitivity to vegetation coverage changes, induced when enclosing the catchment, was found. On the other hand, the model proved sensitive to differences in vegetation cover at smaller scales when the geology was

  9. Interseismic deformations along Ecuador active fault systems: Contribution of space-borne SAR Interferometry

    NASA Astrophysics Data System (ADS)

    Champenois, J.; Audin, L.; Baize, S.; Nocquet, J.; Alvarado, A.

    2013-05-01

    Located in the Northern Andes along the active subduction zone of the Nazca plate beneath the South American continent, Ecuador is highly exposed to seismic hazard. Up to now, numerous multidisciplinary studies for the last ten years focused on the seismicity related to the subduction, whereas few investigations concentrated on the crustal seismicity in the upper plate (through few strong events like the 1797 Riobamba earthquake, ML 8.3, 12.000 deaths). The faults that are responsible of these earthquakes are poorly known in term of slip rate and in some cases are even not identified yet. To address this issue and compare the interseismic data to the geomorphological long term signature of active faulting we propose to use multi-temporal Synthetic Aperture Radar Interferometry (InSAR) methods.Using these cost-effective techniques, we are able to investigate surface interseismic deformation with an unprecedented spatial density of measurements (highly superior to Global Positioning System network density). This study presents preliminary results of tectonic surface deformation using ERS (1993-2000) and Envisat (2002-2010) SAR data in the Inter Andean Valley and along the eastern border of the North Andean Block, where is accommodated the relative displacement between the North Andean Block and South America plate (~ 8 mm/yr). We generated average velocity maps and consistent time-series of displacements with values measured along the line of sight of the radar. Resulting maps of ground displacements are calibrated by GPS data in order to provide a homogeneous database. These preliminary results show large scale deformation localized on some major fault systems in the Inter Andean Valley (from Quito to north of Cuenca) and allow an updating of the active faults map. Moreover, these InSAR results permit detecting and quantifying ground deformation due to volcanic unrest.

  10. Intense cold and mortality in Castile-La Mancha (Spain): study of mortality trigger thresholds from 1975 to 2003

    NASA Astrophysics Data System (ADS)

    Miron, Isidro J.; Montero, Juan Carlos; Criado-Alvarez, Juan José; Linares, Cristina; Díaz, Julio

    2012-01-01

    Studies on temperature-mortality time trends especially address heat, so that any contribution on the subject of cold is necessarily of interest. This study describes the modification of the lagged effects of cold on mortality in Castile-La Mancha from 1975 to 2003, with the novelty of also approaching this aspect in terms of mortality trigger thresholds. Cross-correlation functions (CCFs) were thus established with 15 lags, after application of ARIMA models to the mortality data and minimum daily temperatures (from November to March), and the results for the periods 1975-1984, 1985-1994 and 1995-2003 were then compared. In addition, daily mortality residuals for the periods 1975-1989 and 1990-2003 were related to minimum temperatures grouped in 2°C intervals, with a cold threshold temperature being obtained in cases where such residuals increased significantly ( p < 0.05) with respect to the mean for the study period. A cold-related mortality trigger threshold of -3°C was obtained for Ciudad Real for the period 1990-2003. The significant number of lags ( p < 0.05) in the CCFs declined every 10 years in Toledo (5-2-0), Cuenca (4-2-0), Albacete (4-3-0) and Ciudad Real (3-2-1). This meant that, while the trend in cold-related mortality trigger thresholds in the region could not be ascertained, it was possible to establish a reduction in the lagged effects of cold on mortality, attributable to the improvement in socio-economic conditions over the study period. Evidence was shown of the effects of cold on mortality, a finding that renders the adoption of preventive measures advisable in any case where intense cold is forecast.

  11. Testing & Validating: 3D Seismic Travel Time Tomography (Detailed Shallow Subsurface Imaging)

    NASA Astrophysics Data System (ADS)

    Marti, David; Marzan, Ignacio; Alvarez-Marron, Joaquina; Carbonell, Ramon

    2016-04-01

    A detailed full 3 dimensional P wave seismic velocity model was constrained by a high-resolution seismic tomography experiment. A regular and dense grid of shots and receivers was use to image a 500x500x200 m volume of the shallow subsurface. 10 GEODE's resulting in a 240 channels recording system and a 250 kg weight drop were used for the acquisition. The recording geometry consisted in 10x20m geophone grid spacing, and a 20x20 m stagered source spacing. A total of 1200 receivers and 676 source points. The study area is located within the Iberian Meseta, in Villar de Cañas (Cuenca, Spain). The lithological/geological target consisted in a Neogen sedimentary sequence formed from bottom to top by a transition from gyspum to silstones. The main objectives consisted in resolving the underground structure: contacts/discontinuities; constrain the 3D geometry of the lithology (possible cavities, faults/fractures). These targets were achieved by mapping the 3D distribution of the physical properties (P-wave velocity). The regularly space dense acquisition grid forced to acquire the survey in different stages and with a variety of weather conditions. Therefore, a careful quality control was required. More than a half million first arrivals were inverted to provide a 3D Vp velocity model that reached depths of 120 m in the areas with the highest ray coverage. An extended borehole campaign, that included borehole geophysical measurements in some wells provided unique tight constraints on the lithology an a validation scheme for the tomographic results. The final image reveals a laterally variable structure consisting of four different lithological units. In this methodological validation test travel-time tomography features a high capacity of imaging in detail the lithological contrasts for complex structures located at very shallow depths.

  12. Physical fitness among urban and rural Ecuadorian adolescents and its association with blood lipids: a cross sectional study

    PubMed Central

    2014-01-01

    Background Physical fitness has been proposed as a marker for health during adolescence. Currently, little is known about physical fitness and its association with blood lipid profile in adolescents from low and middle-income countries. The aim of this study is therefore to assess physical fitness among urban and rural adolescents and its associations with blood lipid profile in a middle-income country. Methods A cross-sectional study was conducted between January 2008 and April 2009 in 648 Ecuadorian adolescents (52.3% boys), aged 11 to 15 years, attending secondary schools in Cuenca (urban n = 490) and Nabón (rural n = 158). Data collection included anthropometric measures, application of the EUROFIT battery, dietary intake (2-day 24 h recall), socio-demographic characteristics, and blood samples from a subsample (n = 301). The FITNESGRAM standards were used to evaluate fitness. The associations of fitness and residential location with blood lipid profile were assessed by linear and logistic regression after adjusting for confounding factors. Results The majority (59%) of the adolescents exhibited low levels of aerobic capacity as defined by the FITNESSGRAM standards. Urban adolescents had significantly higher mean scores in five EUROFIT tests (20 m shuttle, speed shuttle run, plate tapping, sit-up and vertical jump) and significantly most favorable improved plasma lipid profile (triglycerides and HDL) as compared to rural adolescents. There was a weak association between blood lipid profile and physical fitness in both urban and rural adolescents, even after adjustment for confounding factors. Conclusions Physical fitness, in our sample of Ecuadorian adolescents, was generally poor. Urban adolescents had better physical fitness and blood lipid profiles than rural adolescents. The differences in fitness did not explain those in blood lipid profile between urban and rural adolescents. PMID:24745348

  13. Analysis of the presence of perfluoroalkyl substances in water, sediment and biota of the Jucar River (E Spain). Sources, partitioning and relationships with water physical characteristics.

    PubMed

    Campo, Julian; Lorenzo, María; Pérez, Francisca; Picó, Yolanda; Farré, Marinel la; Barceló, Damià

    2016-05-01

    The presence, sources and partitioning of 21 perfluoroalkyl substances (PFASs: C4-C14, C16, C18 carboxylate, C4, C6-C10 sulfonates and C8 sulfonamide) were assessed in water, sediment, and biota of the Jucar River basin (E Spain). Considering the three matrices, perfluoropentanoate (PFPeA) and perfluorooctane sulfonate (PFOS) were the most frequent compounds, being remarkable the high occurrence of short-chain PFASs (C≤8), which are intended to replace the long-chain ones in several industrial and commercial applications. In general, all samples were contaminated with at least one PFAS, with the exception of three fish samples. Mean concentrations detected in sediments (0.22-11.5ng g(-1)) and biota (0.63-274µgkg(-1)) samples were higher than those measured in water (0.04-83.1ngL(-1)), which might suggest (bio) accumulation. The occurrence of PFAS is related to urban and industrial discharges (Cuenca city in the upper part of basin, and car's factory, and effluents of the sewage treatment plant (STP) of Alzira, in the lower part). Increasing pollution gradients were found. On the other hand, higher contamination levels were observed after regulation dams of the catchment pointing out their importance in the re-distribution of these contaminants. None of the hazard quotients (HQ) calculated indicate potential risk for the different tropic levels considered (algae, Daphnia sp. and fish). PFAS concentrations found in this study can be considered in acceptable levels if compared to existing Regulatory Legislation and, consequently, they do not pose an immediate human health risk.

  14. A cross-sectional study on attitudes toward gender equality, sexual behavior, positive sexual experiences, and communication about sex among sexually active and non-sexually active adolescents in Bolivia and Ecuador

    PubMed Central

    De Meyer, Sara; Jaruseviciene, Lina; Zaborskis, Apolinaras; Decat, Peter; Vega, Bernardo; Cordova, Kathya; Temmerman, Marleen; Degomme, Olivier; Michielsen, Kristien

    2014-01-01

    Background It is widely agreed upon that gender is a key aspect of sexuality however, questions remain on how gender exactly influences adolescents’ sexual health. Objective The aim of this research was to study correlations between gender equality attitudes and sexual behavior, sexual experiences and communication about sex among sexually active and non-sexually active adolescents in 2 Latin American countries. Design In 2011, a cross-sectional study was carried out among 5,913 adolescents aged 14–18 in 20 secondary schools in Cochabamba (Bolivia) and 6 secondary schools in Cuenca (Ecuador). Models were built using logistic regressions to assess the predictive value of attitudes toward gender equality on adolescents’ sexual behavior, on experiences and on communication. Results The analysis shows that sexually active adolescents who consider gender equality as important report higher current use of contraceptives within the couple. They are more likely to describe their last sexual intercourse as a positive experience and consider it easier to talk with their partner about sexuality than sexually experienced adolescents who are less positively inclined toward gender equality. These correlations remained consistent whether the respondent was a boy or a girl. Non-sexually active adolescents, who consider gender equality to be important, are more likely to think that sexual intercourse is a positive experience. They consider it less necessary to have sexual intercourse to maintain a relationship and find it easier to communicate with their girlfriend or boyfriend than sexually non-active adolescents who consider gender equality to be less important. Comparable results were found for boys and girls. Conclusions Our results suggest that gender equality attitudes have a positive impact on adolescents’ sexual and reproductive health (SRH) and wellbeing. Further research is necessary to better understand the relationship between gender attitudes and specific SRH

  15. [The People's Health Movement: health for all now].

    PubMed

    San Sebastián, Miguel; Hurtig, Anna-Karin; Breilh, Jaime; Peralta, Arturo Quizhpe

    2005-07-01

    We are moving away from the year 2000, and the goal of "health for all" remains distant. Economic globalization, which many consider to be one of the most serious threats to health, moves ahead, along with globalization of international health policies. A small number of powerful actors are in charge of setting the agenda, and they relegate to an inferior position the World Health Organization, which has moved away from the goal of "health for all." All of this has helped to promote a neoliberal mentality in the field of health. The People's Health Movement was created with the objective of reestablishing the right to comprehensive health and to development with equity as principal priorities of health policies at the local, national, and international levels. The People's Health Movement uses as a strategy the People's Charter for Health, which was approved at the first People's Health Assembly, which was held in Bangladesh in 2000. The Charter expresses collective concerns and the belief in a better and healthier world as a meeting point in order to promote a world health movement and a call for radical action. In July 2005 the People's Health Movement will hold the People's Health Assembly 2, in the city of Cuenca, Ecuador. The slogan of that meeting will be "The voices of the earth are calling!--let's build a healthy world." Among the topics that will be examined at the meeting are: health as a fundamental human right; militarization and occupation; environmental degradation; emerging and reemerging pandemics; equity, poverty, and health; the importance of cultural diversity; social and political violence; health in the hands of the people; health at work; traditional medicine and bioenergetic medicine; gender; and health sector reform. The objective of the People's Health Movement is to help to reach the Millennium Development Goals and to smooth the path toward attaining health for all, in Latin America and the Caribbean as well as in the rest of the world

  16. AFLP and MS-AFLP analysis of the variation within saffron crocus (Crocus sativus L.) germplasm.

    PubMed

    Busconi, Matteo; Colli, Licia; Sánchez, Rosa Ana; Santaella, Marcela; De-Los-Mozos Pascual, Marcelino; Santana, Omar; Roldán, Marta; Fernández, José-Antonio

    2015-01-01

    The presence and extent of genetic variation in saffron crocus are still debated, as testified by several contradictory articles providing contrasting results about the monomorphism or less of the species. Remarkably, phenotypic variations have been frequently observed in the field, such variations are usually unstable and can change from one growing season to another. Considering that gene expression can be influenced both by genetic and epigenetic changes, epigenetics could be a plausible cause of the alternative phenotypes. In order to obtain new insights into this issue, we carried out a molecular marker analysis of 112 accessions from the World Saffron and Crocus Collection. The accessions were grown for at least three years in the same open field conditions. The same samples were analysed using Amplified Fragment Length Polymorphism (AFLP) and Methyl Sensitive AFLP in order to search for variation at the genetic (DNA sequence) and epigenetic (cytosine methylation) level. While the genetic variability was low (4.23% polymorphic peaks and twelve (12) effective different genotypes), the methyl sensitive analysis showed the presence of high epigenetic variability (33.57% polymorphic peaks and twenty eight (28) different effective epigenotypes). The pattern obtained by Factorial Correspondence Analysis of AFLP and, in particular, of MS-AFLP data was consistent with the geographical provenance of the accessions. Very interestingly, by focusing on Spanish accessions, it was observed that the distribution of the accessions in the Factorial Correspondence Analysis is not random but tends to reflect the geographical origin. Two clearly defined clusters grouping accessions from the West (Toledo and Ciudad Real) and accessions from the East (Cuenca and Teruel) were clearly recognised.

  17. Interactive effects of water diversion and climate change for juvenile chinook salmon in the lemhi river basin (USA.).

    PubMed

    Walters, Annika W; Bartz, Krista K; McClure, Michelle M

    2013-12-01

    The combined effects of water diversion and climate change are a major conservation challenge for freshwater ecosystems. In the Lemhi Basin, Idaho (U.S.A.), water diversion causes changes in streamflow, and climate change will further affect streamflow and temperature. Shifts in streamflow and temperature regimes can affect juvenile salmon growth, movement, and survival. We examined the potential effects of water diversion and climate change on juvenile Chinook salmon (Oncorhynchus tshawytscha), a species listed as threatened under the U.S. Endangered Species Act (ESA). To examine the effects for juvenile survival, we created a model relating 19 years of juvenile survival data to streamflow and temperature and found spring streamflow and summer temperature were good predictors of juvenile survival. We used these models to project juvenile survival for 15 diversion and climate-change scenarios. Projected survival was 42-58% lower when streamflows were diverted than when streamflows were undiverted. For diverted streamflows, 2040 climate-change scenarios (ECHO-G and CGCM3.1 T47) resulted in an additional 11-39% decrease in survival. We also created models relating habitat carrying capacity to streamflow and made projections for diversion and climate-change scenarios. Habitat carrying capacity estimated for diverted streamflows was 17-58% lower than for undiverted streamflows. Climate-change scenarios resulted in additional decreases in carrying capacity for the dry (ECHO-G) climate model. Our results indicate climate change will likely pose an additional stressor that should be considered when evaluating the effects of anthropogenic actions on salmon population status. Thus, this type of analysis will be especially important for evaluating effects of specific actions on a particular species. Efectos Interactivos de la Desviación del Agua y el Cambio Climático en Individuos Juveniles de Salmón Chinook en la Cuenca del Río Lemhi (E.U.A.). PMID:24299084

  18. A bizarre, humped Carcharodontosauria (Theropoda) from the lower cretaceous of Spain.

    PubMed

    Ortega, Francisco; Escaso, Fernando; Sanz, José L

    2010-09-01

    Carcharodontosaurs were the largest predatory dinosaurs, and their early evolutionary history seems to be more intricate than was previously thought. Until recently, carcharodontosaurs were restricted to a group of large theropods inhabiting the Late Cretaceous Gondwanan land masses, but in the last few years Laurasian evidence has been causing a reevaluation of their initial diversification. Here we describe an almost complete and exquisitely preserved skeleton of a medium-sized (roughly six metres long) theropod from the Lower Cretaceous series (Barremian stage) Konservat-Lagerstätte of Las Hoyas in Cuenca, Spain. Cladistic analysis supports the idea that the new taxon Concavenator corcovatus is a primitive member of Carcharodontosauria, exhibiting two unusual features: elongation of the neurapophyses of two presacral vertebrae forming a pointed, hump-like structure and a series of small bumps on the ulna. We think that these bumps are homologous to quill knobs present on some modern birds; the knobs are related to the insertion area of follicular ligaments that anchor the roots of the flight feathers (remiges) to the arm. We propose that Concavenator has integumentary follicular structures inserted on the ulna, as in modern birds. Because scales do not have follicles, we consider the structures anchored to the Concavenator arms to be non-scale skin appendages homologous to the feathers of modern birds. If this is true, then the phylogenetic bracket for the presence of non-scale skin structures homologous to feathers in theropod dinosaurs would be extended to the Neotetanurae, enlarging the scope for explaining the origin of feathers in theropods.

  19. Intense cold and mortality in Castile-La Mancha (Spain): study of mortality trigger thresholds from 1975 to 2003.

    PubMed

    Miron, Isidro J; Montero, Juan Carlos; Criado-Alvarez, Juan José; Linares, Cristina; Díaz, Julio

    2012-01-01

    Studies on temperature-mortality time trends especially address heat, so that any contribution on the subject of cold is necessarily of interest. This study describes the modification of the lagged effects of cold on mortality in Castile-La Mancha from 1975 to 2003, with the novelty of also approaching this aspect in terms of mortality trigger thresholds. Cross-correlation functions (CCFs) were thus established with 15 lags, after application of ARIMA models to the mortality data and minimum daily temperatures (from November to March), and the results for the periods 1975-1984, 1985-1994 and 1995-2003 were then compared. In addition, daily mortality residuals for the periods 1975-1989 and 1990-2003 were related to minimum temperatures grouped in 2°C intervals, with a cold threshold temperature being obtained in cases where such residuals increased significantly (p < 0.05) with respect to the mean for the study period. A cold-related mortality trigger threshold of -3°C was obtained for Ciudad Real for the period 1990-2003. The significant number of lags (p < 0.05) in the CCFs declined every 10 years in Toledo (5-2-0), Cuenca (4-2-0), Albacete (4-3-0) and Ciudad Real (3-2-1). This meant that, while the trend in cold-related mortality trigger thresholds in the region could not be ascertained, it was possible to establish a reduction in the lagged effects of cold on mortality, attributable to the improvement in socio-economic conditions over the study period. Evidence was shown of the effects of cold on mortality, a finding that renders the adoption of preventive measures advisable in any case where intense cold is forecast. PMID:21312043

  20. Evaluating dryland ecological and river restoration using repeat LiDAR and hydrological monitoring

    NASA Astrophysics Data System (ADS)

    Henderson, W. M.; DeLong, S.

    2012-12-01

    Recent improvements in the collection of multitemporal, high-resolution topographic data such as Light Detection and Ranging (LiDAR) have done a great deal to increase our ability to quantify the details of landscape change. Both Terrestrial Laser Scanning (TLS) and Airborne Laser Swath Mapping (ALSM) can be used to easily assess how Earth surface processes affect landscape form to a level of precision that was previously more difficult to attain. A comprehensive approach using ALSM, TLS-TLS comparison, and hydrological monitoring is being used to assess the effectiveness of a large scale ecological and river restoration effort by the Cuenca los Ojos Foundation at San Bernardino Ranch near Agua Prieta, Sonora, Mexico. In the study area, historical arroyo cutting and changes in land use led to the abandonment of a ciénega wetland and resulted in widespread ecological destruction. The current land managers have employed engineering methods in order to restore stream and ciénega ecology, including the installation of large rock gabions, earthen berms, and concrete spillways along channels. Our goal is to test the hypothesis that the use of dam and gabion structures leads to stream aggradation, flash flood dampening, and ultimately, increased available water and reestablishment of historic wetland plant and animal communities. We present results from LiDAR change detection that includes 2007-2011 ALSM to TLS change, and several 2011-2012 TLS-TLS comparisons. We also present results from streamflow monitoring, field observation, and monitoring of shallow groundwater and soil moisture conditions. Preliminary results show that channel aggradation occurs rapidly upstream of engineered structures. However, the apparent dampening of sediment transport by the structures leads to less aggradation and even incision immediately downstream of structures. Peak flood flows are decreased by the reservoirs formed behind large earthen berms. After several years of water retention

  1. Groundwater chemical baseline values to assess the Recovery Plan in the Matanza-Riachuelo River basin, Argentina.

    PubMed

    Zabala, M E; Martínez, S; Manzano, M; Vives, L

    2016-01-15

    The two most exploited aquifers in the Matanza-Riachuelo River basin are being monitored in the framework of the Integrated Environmental Sanitation Plan that implements the Basin Authority, Autoridad de Cuenca Matanza Riachuelo. In this context, this work identifies the groundwater chemical types and the natural processes behind them; determines spatial and temporal changes; establishes ranges of variation for chemical components, and proposes concentration values for the upper limit of the natural chemical background. A total of 1007 samples from three aquifer-layers (Upper Aquifer, top and bottom of Puelche Aquifer) have been studied. As concrete guidelines for practical determination of baseline values are not available in the region, the methodology used follows the proposals of European projects which assessed European water directives. The groundwater composition is very stable in terms of both chemical facies and mineralization degree, and the changes observed in the dry and wet periods analysed are subtle in general. Most of the groundwater is Na-HCO3 type, except a few samples that are Ca-HCO3, Na-ClSO4 and Na-Cl types. The Ca-HCO3 waters are the result of calcium carbonate dissolution, Na-HCO3 waters result from cation exchange and carbonate dissolution, while in the Na-ClSO4 and Na-Cl waters, mixing with connate and with encroached old marine water from the underlying and overlying sediments are the most relevant processes. The proposed values for the upper limit of the natural background consider the influence of geology and Holocene marine ingressions in the baseline of coastal groundwater. This study allowed to know the initial chemical conditions of the groundwater system of the Matanza-Riachuelo River basin and to establish the reference from which Basin Authority can start to evaluate trends and monitor the recovery plan. At the same time, it sets a precedent for future studies in the region.

  2. Rainy Day: A Remote Sensing-Driven Extreme Rainfall Simulation Approach for Hazard Assessment

    NASA Astrophysics Data System (ADS)

    Wright, Daniel; Yatheendradas, Soni; Peters-Lidard, Christa; Kirschbaum, Dalia; Ayalew, Tibebu; Mantilla, Ricardo; Krajewski, Witold

    2015-04-01

    Progress on the assessment of rainfall-driven hazards such as floods and landslides has been hampered by the challenge of characterizing the frequency, intensity, and structure of extreme rainfall at the watershed or hillslope scale. Conventional approaches rely on simplifying assumptions and are strongly dependent on the location, the availability of long-term rain gage measurements, and the subjectivity of the analyst. Regional and global-scale rainfall remote sensing products provide an alternative, but are limited by relatively short (~15-year) observational records. To overcome this, we have coupled these remote sensing products with a space-time resampling framework known as stochastic storm transposition (SST). SST "lengthens" the rainfall record by resampling from a catalog of observed storms from a user-defined region, effectively recreating the regional extreme rainfall hydroclimate. This coupling has been codified in Rainy Day, a Python-based platform for quickly generating large numbers of probabilistic extreme rainfall "scenarios" at any point on the globe. Rainy Day is readily compatible with any gridded rainfall dataset. The user can optionally incorporate regional rain gage or weather radar measurements for bias correction using the Precipitation Uncertainties for Satellite Hydrology (PUSH) framework. Results from Rainy Day using the CMORPH satellite precipitation product are compared with local observations in two examples. The first example is peak discharge estimation in a medium-sized (~4000 square km) watershed in the central United States performed using CUENCAS, a parsimonious physically-based distributed hydrologic model. The second example is rainfall frequency analysis for Saint Lucia, a small volcanic island in the eastern Caribbean that is prone to landslides and flash floods. The distinct rainfall hydroclimates of the two example sites illustrate the flexibility of the approach and its usefulness for hazard analysis in data-poor regions.

  3. If Your Child Learns in Two Languages: A Parent's Guide for Improving Educational Opportunities for Children Acquiring English as a Second Language = Si su nino aprende en dos idiomes: Una guia para que las familias sepan como mejorar las oportunidades educativas de los ninos que adquieren el ingles como segunda lengua = Neu lon Ban Hoc Bang Hai Thu Tieng: Chi-nam cua phu-huynh de cai tien co hoi hoc van cua con em dang hoc Anh van nhu sinh ngu thu hai.

    ERIC Educational Resources Information Center

    Zelasko, Nancy; Antunez, Beth

    This guide, in English, Spanish, and Vietnamese, aims to inform parents of students who have learned or are learning English as a Second Language about appropriate approaches for educating children so that they can work with schools to ensure a high quality education for their children. The emphasis is on explaining the laws, schools, and research…

  4. Analysis of the life-style and dietary habits of a population of adolescents.

    PubMed

    González-Jiménez, Emilio; Cañadas, Gustavo R; Fernández-Castillo, Rafael; Cañadas-De la Fuente, Guillermo Arturo

    2013-11-01

    Objetivos: En primer lugar verificar una posible mejora del estado nutricional en una población de alumnos tras el desarrollo de una intervención educativa. Comprobar la adopción de hábitos alimentarios y de actividad física saludables por los alumnos, tras el desarrollo de una intervención educativa en salud. Por último, verificar una reducción en el tiempo que los alumnos dedican al ocio sedentario. Muestra y metodología: La población de estudio estaba compuesta por 138 adolescentes de entre 14 y 19 años de edad, 67 chicos (48,6%) y 71 chicas (51,4 %), pertenecientes a dos centros educativos públicos de la ciudad de Almería (España). El estudio se articuló en tres fases. Una primera etapa, que comprendería la segunda quincena del mes de septiembre de 2011. En ella se realizó una valoración del estado nutricional de todos los alumnos mediante antropometría. Una segunda etapa (desde octubre de 2011 hasta la primera quincena de junio de 2012), donde tendría lugar la intervención educativa sobre alimentación saludable y actividad física. Y una última fase (segunda quincena de junio de 2012), donde sería evaluada la eficacia de la intervención desarrollada. Resultados: Tras la intervención, se encontraron diferencias estadísticamente significativa (p.

  5. Association of sodium and potassium intake with left ventricular mass: coronary artery risk development in young adults.

    PubMed

    Rodriguez, Carlos J; Bibbins-Domingo, Kirsten; Jin, Zhezhen; Daviglus, Martha L; Goff, David C; Jacobs, David R

    2011-09-01

    High salt intake may affect left ventricular mass (LVM). We hypothesized that urinary sodium (UNa) and sodium/potassium ratio (UNa/K) are associated with LVM in a predominantly normotensive cohort of young adults. The Coronary Artery Risk Development in Young Adults (CARDIA) Study is a multicenter cohort of black and white men and women aged 30±3.6 years at the time of baseline echocardiographic examination (1990-1991). 2D guided M-mode LVM indexed to body size (grams per meter(2.7)) was calculated, and UNa and potassium excretion assessed (average of three 24-hour urinary samples, n=1042). Linear and logistic regression analysis was used. Participants were 57% women and 55% black. Only 4% were hypertensive. UNa, urinary potassium, and UNa/K ratios were (mean±SD) 175.6±131.0, 56.4±46.3, and 3.4±1.4 mmol/24 h, respectively. Participants in the highest versus the lowest UNa excretion quartile had the greatest LVM (37.5 versus 34.0 g/m(2.7); P<0.001). Adjusted for age, sex, education, and race, LVM averaged 0.945 g/m(2.7) higher per SD of UNa/K (P=0.001). The relationship between UNa/K and LVM persisted among 399 participants with repeat echocardiographic measures 5 years later. In logistic regression analysis adjusted for age, sex, education, and race, each SD higher baseline UNa/K was associated with 23% and 38% greater chances of being in the highest quartile of LVM at baseline (odds ratio: 1.23; P=0.005) and 5 years later (odds ratio: 1.38; P=0.02). A higher sodium/potassium excretion ratio is significantly related to cardiac structure, even among healthy young adults.

  6. [Bilateral carotid artery occlusion: prognosis and neurosonological features].

    PubMed

    Pérez-Sánchez, Javier R; García-Pastor, Andrés; Díaz-Otero, Fernando; Sobrino-García, Pilar; Rodríguez-Cruz, Pedro M; Vicente-Peracho, Gema; Vázquez-Alén, Pilar; Fernández-Bullido, Yolanda; Villanueva-Osorio, José A; Gil-Núñez, Antonio

    2014-07-16

    Introduccion. La oclusion carotidea bilateral (OCB) es una entidad infrecuente y poco estudiada. El pronostico a medio y largo plazo comunicado es variable. La circulacion colateral desempeña, probablemente, un papel crucial en su pronostico; sin embargo, existen pocos trabajos en la bibliografia al respecto. Objetivo. Describir el pronostico y las caracteristicas neurosonologicas de una serie de pacientes con OCB. Pacientes y metodos. Se seleccionaron pacientes del laboratorio de neurosonologia por un periodo de cinco años. El diagnostico de OCB se realizo mediante ultrasonografia duplex y se confirmo con angiotomografia computarizada o angiografia convencional. Se registraron las variables clinico-diagnosticas, el seguimiento de recurrencias, y se realizo un estudio neurosonologico completo y un test de reserva hemodinamica cerebral (RHC) con acetazolamida intravenosa. Resultados. Se revisaron 2.780 estudios neurosonologicos y se confirmo el diagnostico de OCB en 10 pacientes. Ocho pacientes se diagnosticaron a raiz de una isquemia cerebral. Se realizo un seguimiento medio de 2,7 años. Un paciente presento un ataque isquemico transitorio carotideo derecho durante el seguimiento, lo que resulto en una tasa anual de ictus isquemico del 4,1%. Seis se mantuvieron funcionalmente independientes y dos fallecieron. Se realizo un estudio neurosonologico completo en seis pacientes, y se evidencio una circulacion colateral extensa y RHC patologica en todos. El paciente que sufrio la recurrencia presento una RHC exhausta y circulacion colateral desfavorable en el hemisferio sintomatico. Conclusiones. En la serie estudiada, los pacientes con OCB presentaron una baja tasa de recurrencias cerebrovasculares. Una RHC patologica y una circulacion colateral insuficiente podrian relacionarse con un mayor riesgo de recurrencias.

  7. Scienza dei servizi

    NASA Astrophysics Data System (ADS)

    Cavenago, Dario; Mezzanzanica, Mario

    I servizi sono oramai centrali nella vita sociale di ogni Paese. L'aspettativa di ogni attore sociale, sia esso cittadino/utente e/o istituzione, è quella di ricevere da uno scambio che ha alla base un servizio un contributo che si caratterizza per una qualità intrinseca. Il mantenimento di tale promessa richiede all'azienda erogatrice un forte coinvolgimento, nel disegno del servizio, degli utenti ed una capacità di gestione della conoscenza; ciò è particolarmente significativo per quei servizi che si caratterizzano per una forte personalizzazione o complessità progettuale. Disegnare un servizio, metterlo in produzione e gestirne l'erogazione ha una complessità variabile in base al grado di coinvolgimento dei destinati ed alle dimensioni critiche che esprimono le condizioni di fattibilità di un servizio di qualità appropriato alle attese degli utilizzatori. Ugualmente la globalizzazione dell'economia e la scarsità delle risorse ha portato l'attenzione, ai fini della sostenibilità delle condizioni sopra richiamate, di una ricerca di modelli e strumenti che permettano una valutazione e una standardizzazione dei processi di produzione ed erogazione secondo condizioni di economicità. Tali primi e sintetici elementi hanno condotto diversi attori istituzionali, grandi imprese ed università attraverso i loro centri di ricerca, ad una azione di riflessione sul grado di "ingegnerizzazione" dei processi sottesi alla erogazione dei servizi ed in particolare ai servizi che attuano le politiche dei grandi settori di base dell'economia di una Nazione: educazione, sanità, sociale, sviluppo infrastrutture ecc.

  8. [Pilot study about the effectivity of an intervention based on games in nutritional status and muscle strength on children].

    PubMed

    Soto-Sánchez, Johana Patricia; Pavez Saldiviar, Nicolás Fernando; Bravo-Gatica, Javier Ignacio; White Ortiz, Alan Rigoberto; Jaque Fernández, Francisco Ignacio; Vargas-Gyllen, Cristian Ignacio; Arriagada Cárdenas, Sandra; Carrasco Naranjo, Fernando; Cano-Cappellacci, Marcelo Antonio

    2014-07-01

    INTRODUCCIÓN: La malnutrición por exceso es una constante en países en vías de desarrollo, Chile no es una excepción ya que existe una marcada tendencia hacia el sobrepeso y obesidad en la población escolar. La fuerza muscular ha sido asociada con un adecuado estado de salud cardiovascular y metabólica en la población escolar. Se necesitan intervenciones efectivas, que utilicen herramientas lúdicas y que permitan mejorar el estado nutricional y la capacidad física de los escolares.

  9. [Not Available].

    PubMed

    Molina Villaverde, Raquel

    2016-01-01

    El cáncer es un problema sanitario de primera magnitud a escala mundial. Su tratamiento es uno de los mayores campos de innovación y desarrollo en medicina. La visión del cáncer como una enfermedad sistémica, heterogénea y de una elevada complejidad hace que los enfermos deban recibir una atención oncológica de calidad, proporcionada por equipos multidisciplinares altamente cualificados. Además de la gran incidencia de malnutrición en estos pacientes, la intervención nutricional precoz puede mejorar su pronóstico, aumentar la calidad de vida y disminuir la tasa de complicaciones de la enfermedad. Por ello, es necesaria una estrecha colaboración entre el oncólogo y el experto en nutrición. PMID:27269214

  10. New oleanan-type triterpene and cincholic acid glycosides from Peruvian "Uña de Gato" (Uncaria tomentosa).

    PubMed

    Kitajima, Mariko; Hashimoto, Ken-Ichiro; Sandoval, Manuel; Aimi, Norio; Takayama, Hiromitsu

    2004-10-01

    A new oleanan-type triterpene and three new cincholic acid glycosides were isolated from Peruvian "Una de Gato" (Cat's claw, plant of origin: Uncaria tomentosa), a traditional herbal medicine in Peru. Their structures were determined by spectroscopic analysis.

  11. Study Urges Church to Stress Migrant Empowerment, Self Determination.

    ERIC Educational Resources Information Center

    Johnston, Robert L.

    1988-01-01

    Summarizes the findings and recommendations of "Una Vida Dura" ("A Hard Life"), a 1988 study by Charles Kyle and others, that criticizes the services provided to migrant farm workers in Illinois by the Catholic Church. (FMW)

  12. El estrés y fumar | Smokefree Español

    Cancer.gov

    Muchas personas fuman cuando se sienten estresadas. Una parte importante de dejar de fumar es encontrar maneras de manejar el estrés. Reciba recomendaciones sobre formas de disminuir el estrés en su vida.

  13. Liberation Bookstore: A Community Institution.

    ERIC Educational Resources Information Center

    Banfield, Beryle

    1985-01-01

    Describes a Harlem-based community bookstore and the services that the owner, Una Mulzac, offers the community. The shop stocks one of New York City's largest selection of books on Afro-American and African history and culture. (SA)

  14. [Not Available].

    PubMed

    Molina Villaverde, Raquel

    2016-06-03

    El cáncer es un problema sanitario de primera magnitud a escala mundial. Su tratamiento es uno de los mayores campos de innovación y desarrollo en medicina. La visión del cáncer como una enfermedad sistémica, heterogénea y de una elevada complejidad hace que los enfermos deban recibir una atención oncológica de calidad, proporcionada por equipos multidisciplinares altamente cualificados. Además de la gran incidencia de malnutrición en estos pacientes, la intervención nutricional precoz puede mejorar su pronóstico, aumentar la calidad de vida y disminuir la tasa de complicaciones de la enfermedad. Por ello, es necesaria una estrecha colaboración entre el oncólogo y el experto en nutrición.

  15. Late surgical complications of subtotal colectomy with antiperistaltic caeco-rectal anastomosis for slow transit constipation A critical analysis.

    PubMed

    Marchesi, Federico; Rapacchi, Chiara; Cecchini, Stefano; Sarli, Leopoldo; Tartamella, Francesco; Roncoroni, Luigi

    2016-01-01

    La stipsi grave da rallentato transito è stata negli ultimi anni definitivamente riconosciuta come una condizione potenzialmente chirurgica, e nuove varianti tecniche sono state proposte in alternativa alla colectomia totale con ileo-retto anastomosi con l’obiettivo di minimizzare il rapporto rischi-benefici per il paziente. In quest’ottica la colectomia subtotale con anastomosi ceco-rettale (SCCRA) rappresenta nella nostra esperienza una valida alternativa, riducendo, a parità di efficacia, l’incontinenza e l’urgency postoperatoria, grazie alla preservazione della valvola ileo-cecale e del reservoir cecale. Tuttavia, a fronte di una buona percentuale di successi, legati soprattutto al miglioramento della selezione dei pazienti, la chirurgia della stipsi da rallentato transito presenta tuttora un non trascurabile numero di insuccessi e di complicanze tardive, spesso imprevedibili, e correlate alle varianti tecniche adottate. Nello specifico caso della SCCRA, la preservazione di un segmento colico verosimilmente malfunzionante (il ceco) è stata imputata come possibile causa di recidiva di stipsi cosiccome origine di complicanze chirurgiche tardive (distensione cecale, volvolo). L’obiettivo di questo studio è di analizzare in maniera critica le complicanze tardive di SCCRA, esaminando i rischi specifici della procedura per identificare possibili misure di prevenzione. A tal fine sono stati valutati i dati di 43 pazienti aderenti al follow-up sottoposti a SCCRA presso il nostro Istituto. Sono stati inclusi i pazienti sottoposti a re-intervento per complicanza tardiva chiaramente correlata a SCCRA presso il nostro centro. Sono state identificate 3 complicanze tardive (7%): una distensione cecale, un volvolo ileo-cecale, un volvolo ileale. Tutti i pazienti sono stati trattati chirurgicamente con successo. Solo nel primo caso è stata identificata una evidente condizione predisponente: la presenza di una defecazione ostruita non risolta associata ad un

  16. Introduzione al Laboratorio di Fisica

    NASA Astrophysics Data System (ADS)

    Ciullo, Giuseppe

    La Fisica (dal greco τὰ ϕυσικὰ: le cose naturali) si pone l'obiettivo di descrivere e prevedere il comportamento dei fenomeni naturali, nonché degli apparati e degli strumenti, che hanno reso e rendono la nostra vita più comoda ed efficiente. Tale obiettivo viene perseguito mediante un'attenta osservazione dei fenomeni, con una conseguente schematizzazione dell'osservazione, per fornire una conoscenza della realtà oggettiva, affidabile, verificabile e condivisibile.

  17. La distribución multimodal de cúmulos globulares en la galaxia NGC 1399

    NASA Astrophysics Data System (ADS)

    Forte, J. C.; Ostrov, P. G.

    Se presenta una discusión de las características del diagrama de dos colores para un muestreo de 400 cúmulos globulares asociados con NGC 1399. Los resultados indican la presencia de, por lo menos, tres familias de cúmulos. La naturaleza de una cuarta componente, muy azul, no es clara aunque podría tratarse de cúmulos ``sueltos" asociados con el sistema de Fornax.

  18. Observacion y anatisis de la varlacton de parametros geofisicos de un pozo ubicado en el piedemonte lIanero

    NASA Astrophysics Data System (ADS)

    Montano Mejia, Felix Humberto

    2001-12-01

    Este articulo presenta el desarrollo de instrumentacion especializada que se diseiio y se puso en funcionamiento con el fin de real izar la observacion y el anal isis de la variacion de parametres geofisicos de un pozo ubicado en el piedemonte llanero. La instrumentacion esta compuesta por una estacion remota para el registro multipararnetro y una estacion local en la cual se analizan los registros bajados de la estacion remota mediante la interrogacion periodica.

  19. [An exceptional mimicker of ovarian tumors: cancer in a pelvic horseshoe kidney].

    PubMed

    Ortiz-Mendoza, Carlos Manuel

    2013-01-01

    Introducción: aunque el riñón en herradura es una anomalía congénita frecuente, hasta el momento no se había informado que produjera un tumor maligno que pareciera una neoplasia de ovario. Caso clínico: mujer de 53 años de edad con un tumor pélvico, que tenía el antecedente de una histerectomía simple debida a miomatosis. Mediante la exploración abdominal se detectó una masa en hipogastrio, edondeada, de 20 cm, firme y fija. En el tacto vaginal, la lesión era palpable a través del fondo de saco. Con el diagnóstico de una probable neoplasia por síndrome de ovario residual, la paciente fue remitida al servicio de ginecología para su estudio y atención. Una tomografía computarizada demostró que la masa se originaba del lado derecho de un riñón pélvico malformado. Por lo anterior, la paciente fue enviada al servicio de oncología quirúrgica, donde se corroboró el hallazgo. Al analizar los estudios de imagen se emitió el diagnóstico de una probable neoplasia de un riñón pélvico en herradura. La paciente fue sometida a una laparotomía exploradora, en la que se extirpó un tumor de 19 cm del riñón malformado, cuyo polo inferior ocupaba la pelvis verdadera. Mediante el examen histopalógico se determinó que se trataba de un carcinoma de células cromófobas. Conclusiones: en las mujeres, los tumores del riñón pélvico en herradura pueden simular un tumor de ovario.

  20. Is pentoxifylline effective in alcoholic hepatitis? –First update.

    PubMed

    Rada, Gabriel; Arteaga, Matías; Candia, Roberto

    2016-06-14

    ACERCA DE LA ACTUALIZACIÓN: Este resumen Epistemonikos (Living FRISBEE: Living FRIendly Summary of the Body of Evidence using Epistemonikos) es una actualización del resumen publicado en Junio de 2014. Incorpora una nueva revisión sistemática que identificó un estudio no incluido en las revisiones previas. La incorporación de esta nueva evidencia lleva a cambios sustantivos en la evidencia existente.

  1. [Relationships between language disorders and socio-emotional competence].

    PubMed

    Baixauli-Fortea, Inmaculada; Roselló-Miranda, Belén; Colomer-Diago, Carla

    2015-02-25

    Introduccion. Existe una comorbilidad elevada entre los trastornos del lenguaje y los problemas conductuales, emocionales y sociales. Objetivo. Revisar la bibliografia existente sobre las dificultades sociales y emocionales de los niños con trastorno especifico del lenguaje desde una perspectiva evolutiva. Desarrollo. En la infancia temprana, los resultados acerca de este tipo de dificultades en niños con un retraso del lenguaje no son concluyentes. Sin embargo, desde el periodo de educacion infantil, la investigacion advierte de una mayor ocurrencia de alteraciones en el area social y emocional. Los estudios longitudinales que han permitido determinar el ajuste psicosocial en la adolescencia indican un mayor riesgo de presentar experiencias de victimizacion y bullying o de desarrollar ansiedad y depresion a largo plazo, aunque algunos trabajos ofrecen una panoramica mas alentadora. Conclusiones. La afectacion de la comprension y del componente pragmatico del lenguaje es un predictor importante en la manifestacion de alteraciones socioemocionales. En los trastornos mixtos comprensivos-expresivos, una dificultad de procesamiento general podria justificar, al menos parcialmente, esta asociacion. A su vez, es probable que limitaciones en el desarrollo de la cognicion social contribuyan a explicar, en cierta medida, las dificultades de las personas con trastornos pragmaticos, si bien no existe una consistencia en la investigacion en este sentido.

  2. The role of plastic surgeon in complex cephalic malformations. Our experience.

    PubMed

    Chiumariello, Stefano; Del Torto, Giuseppe; Guarro, Giuseppe; Alfano, Carmine

    2014-01-01

    Le malformazioni complesse del distretto cefalico comprendono tutta una serie di anomalie di sviluppo che oltre a presentare una notevole difficoltà classificativa e di inquadramento, comprendono forme che sono talora di stretta pertinenza specialistica. La correzione delle malformazioni craniofacciali fa ricorso ad una disciplina chirurgica particolarmente esigente, che deve associare una formazione chirurgica di base con un apprendimento delle tecniche specifiche per il territorio craniofacciale e una conoscenza della patologia malformativa. L’eziologia malformativa pone il chirurgo davanti a problemi specifici, dominati dallo sviluppo della tecnica chirurgica. Si stabilisce dunque un protocollo terapeutico dopo aver identificato la malformazione, stimato la gravità delle alterazioni tissutali e valutato la capacità di crescita dei territori interessati. E’ fondamentale, oltre che il rimodellamento della morfologia, il recupero delle funzioni ed il trattamento rieducativo. E’ quindi evidente che si tratta di una chirurgia di equipe che può portare risultati positivi solo se realizzata con fiducia reciproca tra i vari operatori.

  3. [Rupture of splenic artery pseudoaneurysm: an unusual cause of upper gastrointetinal bleeding].

    PubMed

    Herrera-Fernández, Francisco Antonio; Palomeque-Jiménez, Antonio; Serrano-Puche, Félix; Calzado-Baeza, Salvador Francisco; Reyes-Moreno, Montserrat

    2014-01-01

    Antecedentes: tras una pancreatitis, el sangrado de un pseudoquiste pancreático es una complicación grave que puede conducir a una hemorragia digestiva masiva. La ruptura de ese pseudoquiste en el estómago es rara. Caso clínico: se comunica el caso de una paciente femenina de 34 años de edad, con antecedentes de alcoholismo y un pseudoquiste pancreático. Después de abandonar el estudio y seguimiento del pseudoquiste pancreático un año más tarde reingresó de urgencia debido a un cuadro de hemorragia digestiva alta. En una endoscopia del tubo digestivo alto se encontró sangrado activo en la región del fundus gástrico, que no pudo controlarse. La angio-tomografía axial computada abdominal confirmó el diagnóstico de pseudoaneurisma de la arteria esplénica, en íntimo contacto con la pared posterior del estómago y quizá fistulizado al mismo. La paciente se intervino con carácter urgente realizándose esplenopancreatectomía distal y fistulorrafia. Conclusión: en raras ocasiones la ruptura de un pseudoaneurisma de la arteria esplénica puede iniciarse como una hemorragia digestiva alta, que puede ser letal si no es tratada con urgencia.

  4. [Analysis of the stay and morbidity and mortality rates in a unit for neurocritical patients following surgery for a brain tumour].

    PubMed

    Benatar-Haserfaty, Jacobo; Ly-Liu, Diana; González-Moreno, Victoria; Tiscar-García, Carlos

    2015-04-01

    Objetivo. Evaluar la asociacion entre las variables pre y postoperatorias con estancias superiores al dia de ingreso y la morbimortalidad del paciente operado de tumor cerebral durante su estancia en una unidad de cuidados intensivos neurocriticos (UNC). Pacientes y metodos. El estudio retrospectivo incluyo una cohorte de 317 pacientes operados consecutivamente de tumor cerebral por diferentes neurocirujanos e ingresados en la UNC durante un periodo de tres años (2010-2012). Resultados. El 21,5% (n = 68) de los pacientes tuvo estancias superiores a un dia (grupo L), y el 78,5% (n = 249), igual o menores a un dia (grupo C). Se evaluo la asociacion univariable de los factores de riesgo pre y perioperatorios con la estancia. No hubo diferencias significativas en los datos demograficos, el estado fisico segun la clasificacion de la American Society of Anesthesiologists (ASA), las caracteristicas anatomopatologicas ni el indice de gravedad tumoral radiologica entre los grupos L y C. Se necesito intubacion traqueal en el 42,6% (n = 29) de los pacientes del grupo L en algun momento del postoperatorio. El 19,1% (n = 13) de los pacientes del grupo L tuvo complicaciones sistemicas y regionales simultaneamente. Conclusiones. Existe una fraccion importante de pacientes que tiene una estancia superior a un dia en una UNC. Tanto la necesidad de intubacion traqueal como la asistencia respiratoria y la aparicion de complicaciones sistemicas y regionales pueden determinar estancias superiores a un dia en una UNC.

  5. [Epileptic seizures complicated by Takotsubo syndrome].

    PubMed

    Garea Garcia-Malvar, M J; Gonzalez-Silva, Y; Epureanu-Epureanu, V

    2014-11-01

    Introduccion. El sindrome de takotsubo es un trastorno caracterizado por disfuncion ventricular reversible, dolor precordial de tipo anginoso y cambios electrocardiograficos sin evidencia de obstruccion coronaria en coronariografia. Se desencadena por estres, y es frecuente tras crisis epilepticas. Presentamos el caso de una paciente que inicia esta miocardiopatia tras una crisis epileptica al finalizar su sesion de hemodialisis. Caso clinico. Mujer de 55 años en hemodialisis por insuficiencia renal cronica, con epilepsia secundaria a lesion residual frontoparietal derecha por un hematoma que preciso evacuacion quirurgica. Tras una sesion de hemodialisis experimenta una crisis epileptica focal con generalizacion secundaria y, horas despues de esta, dolor centrotoracico. En seriacion enzimatica se objetiva elevacion de troponina I y, electrocardiograficamente, ondas T negativas en derivaciones precordiales (V2-V6). Se realiza coronariografia, cuyo resultado es normal, y se demuestran alteraciones de la contractilidad, confirmadas como de caracter transitorio en un estudio ecocardiografico seriado. Todos los datos anteriores hacen sospechar el diagnostico de sindrome de takotsubo. Conclusion. Las complicaciones cardiacas son una de las causas de morbimortalidad en la epilepsia, y entre ellas se encuentra el sindrome de takotsubo. La incidencia real de dicho sindrome se desconoce, pero dada su implicacion en la mortalidad de causa cardiaca en la epilepsia es importante sospecharlo ante la presencia de disfuncion cardiaca tras una crisis epileptica.

  6. [First case described of isolated, complete and fluctuating cranial nerve III palsy heralding multiple myeloma].

    PubMed

    León-Ruiz, Moisés; Benito-León, Julián; Sierra-Hidalgo, Fernando; García-Soldevilla, Miguel Ángel; Izquierdo-Esteban, Laura; Tejeiro-Martínez, José; Cabrera-Valdivia, Francisco; García-Albea Ristol, Esteban

    2015-02-01

    Introduccion. El mieloma multiple es la neoplasia de celulas plasmaticas mas frecuente. Al ser incurable, el tratamiento persigue obtener el mayor tiempo de supervivencia libre de clinica. Constituye una causa extremadamente rara de afectacion de los nervios craneales y es producido habitualmente por un plasmocitoma intracraneal. Presentamos un caso de mieloma multiple, que asociaba un plasmocitoma intracraneal y que comenzo clinicamente con paralisis aislada, completa y fluctuante del III nervio craneal. Caso clinico. Mujer de 63 años que acudio a urgencias por presentar un cuadro clinico oscilante, consistente en diplopia binocular horizontal y, posteriormente, cefalea. La exploracion neurooftalmologica revelo una paralisis completa del III nervio craneal derecho. Se solicito una tomografia axial computarizada craneal urgente, que revelo multiples lesiones osteoliticas diploicas, asociando una de ellas componente de partes blandas en la hendidura esfenoidal derecha. La paciente fue ingresada, y se le diagnostico posteriormente un mieloma multiple IgA-kappa. Tras recibir induccion quimioterapica y ser sometida a un trasplante autologo de progenitores hematopoyeticos, alcanzo la remision completa. Conclusiones. El mieloma multiple es un trastorno raro de los nervios craneales, una causa muy infrecuente de paralisis aislada y completa del III nervio craneal y menos aun fluctuante, y no se ha encontrado ningun caso publicado con este inicio clinico. Tener en cuenta las posibles manifestaciones neurooftalmologicas del mieloma multiple puede contribuir a un diagnostico precoz y a una incidencia positiva sobre el curso de esta enfermedad.

  7. [Description of the follow-up protocol for idiopathic intracranial hypertension in the neuro-ophthalmological unit of a tertiary hospital].

    PubMed

    González-Hernández, Ayoze; Tandón-Cárdenes, Luis; Cabrera-Naranjo, Fernando; Guzmán-Fernández, María; Fabre-Pi, Óscar; López-Veloso, Carolina

    2013-05-16

    Objetivo. Revisar los resultados de la implantacion de un protocolo de seguimiento de pacientes con hipertension intracraneal idiopatica (HICI) en una unidad de neurooftalmologia (UNO). Pacientes y metodos. Se realizo una revision bibliografica para determinar las exploraciones necesarias que debian incluirse en el protocolo de seguimiento, asi como la frecuencia optima de las visitas y la duracion adecuada del seguimiento. Posteriormente, se revisaron de forma prospectiva los pacientes incluidos desde la creacion de la UNO y se compararon con los pacientes incluidos en el registro de HICI previo a la creacion de la UNO. Resultados. Desde la implantacion del protocolo, en el 100% de los pacientes se ha valorado la agudeza visual y la campimetria visual a los tres meses, a los seis meses y al ano del diagnostico. Ademas, en un 91%, 72,8% y 100% de los pacientes con HICI se realizo una campimetria visual a los tres meses, a los seis meses y al ano del diagnostico, respectivamente. Antes de la implantacion de nuestro protocolo de seguimiento, se habian realizado 190, lo que corresponde a unas tres por paciente. El numero de punciones lumbares realizadas desde la creacion de la UNO es de 11. Conclusiones. La creacion de una UNO multidisciplinar permite optimizar los recursos y mejorar la asistencia a los pacientes con HICI. Esto deberia redundar en una mejoria del pronostico funcional de estos pacientes.

  8. [The influence of physical exercise in the prevention of cognitive deterioration in the elderly: a systematic review].

    PubMed

    Franco-Martín, Manuel; Parra-Vidales, Esther; González-Palau, Fátima; Bernate-Navarro, Mara; Solis, Abdel

    2013-06-01

    Introduccion. La poblacion espanola mayor de 65 anos continua creciendo, por lo que la atencion a adultos mayores se convierte en un objetivo de salud publica cada vez mas relevante. La actividad fisica esta siendo reconocida como un factor altamente protector de las funciones cognitivas en el envejecimiento, y se establece, en la actualidad, como una estrategia psicosocial prometedora para la proteccion de las facultades cognitivas. Pacientes y metodos. Mediante una busqueda bibliografica en las bases de datos PubMed, PsycINFO, Psicodoc, Scopus y SciELO, se revisaron sistematicamente los estudios relativos a la influencia del ejercicio fisico en la prevencion del deterioro cognitivo en adultos mayores sanos y en la reversion o en el mantenimiento del declive cognitivo una vez ya iniciado. Se seleccionaron y utilizaron 31 articulos como unidades de analisis. Resultados. En conjunto, estos estudios indicaron que un mayor indice de actividad fisica se relacionaria con un menor deterioro de las funciones cognitivas en adultos mayores sanos y con deterioro cognitivo ya manifiesto. Conclusiones. El ejercicio fisico constituye una estrategia psicosocial prometedora para la intervencion de adultos mayores con y sin signos de deterioro cognitivo. Serian convenientes mayores estudios que empleen una metodologia experimental, mayor homogeneidad en cuanto a los instrumentos de recogida de datos de funciones cognitivas y una profundizacion en la frecuencia e intensidad necesaria en las intervenciones.

  9. [Effect of alcohol on electrical organisation in the brain during a visuospatial working memory task and its relationship with the menstrual cycle].

    PubMed

    Sanz-Martin, Araceli; Hernández-González, Marisela; Guevara, Miguel Ángel; Santana, Gloria; Gumá-Díaz, Emilio

    2014-02-01

    Introduccion. El metabolismo del alcohol y el desempeño de muchas funciones cognitivas pueden variar a lo largo del ciclo menstrual. Tanto la ingestion de alcohol como las variaciones hormonales durante el ciclo menstrual se asocian con cambios caracteristicos en la actividad electroencefalografica. Objetivo. Determinar si la actividad electroencefalografica durante una tarea de memoria de trabajo es afectada por el consumo agudo de alcohol, y si dicha actividad varia en funcion del ciclo menstrual. Sujetos y metodos. Muestra de 24 mujeres que ingirieron alcohol o placebo durante las fases folicular y lutea temprana. Se registro el electroencefalograma durante la ejecucion de una tarea de memoria de trabajo visuoespacial. Resultados. Aunque el alcohol no deterioro el rendimiento de la tarea de memoria de trabajo, si produjo en el electroencefalograma una disminucion de la potencia relativa de theta y una menor correlacion frontoparietal derecha en las bandas theta y alfa2. Unicamente las mujeres alcoholizadas en la fase folicular presentaron una mayor potencia relativa de alfa1, que podria indicar menor nivel de alertamiento y atencion. Conclusiones. Estos resultados contribuyen a una mejor comprension de los mecanismos cerebrales que subyacen a los cambios cognitivos con el alcohol y su relacion con el ciclo menstrual.

  10. [Value of electroencephalography in the early detection of neonatal leucinosis].

    PubMed

    Pardal-Fernandez, J M; Carrascosa-Romero, M C; Grande, A; Martinez-Gonzalez, M; Godes-Medrano, B

    2016-08-16

    Introduccion. La leucinosis es una metabolopatia neonatal grave. Es consecuencia del deficit enzimatico determinado geneticamente del complejo descarboxilasa-dihidrolipoil transacilasa y dihidrolipoil deshidrogenasa, y del acumulo consecuente de los metabolitos precursores, aminoacidos ramificados de cadena larga y sus alfa-cetoacidos. Son potentes neurotoxicos, responsables del rapido establecimiento de edema y desmielinizacion cerebral difusa. La demora en el diagnostico suele provocar graves secuelas psicomotoras o incluso la muerte. Caso clinico. Se presenta una paciente neonata con encefalopatia neonatal grave, crisis epilepticas y un electroencefalograma (EEG) con unas caracteristicas especiales que oriento el diagnostico hacia una posible leucinosis. El diagnostico temprano permitio instaurar rapidamente el tratamiento especifico y conseguir una evolucion favorable de la paciente. Conclusiones. El EEG en pacientes con sospecha de encefalopatia neonatal ofrece informacion funcional de alta rentabilidad con un bajo coste, en especial por promover diagnosticos y tratamientos tempranos. El EEG en la leucinosis presenta signos peculiares, reconocibles en periodos tempranos en la mayor parte de los afectados, como ocurrio en el caso descrito. Parece recomendable integrar el EEG en el cribado de encefalopatias neonatales por ser una tecnica diagnostica valiosa, inocua y, por lo general, accesible y especialmente de ayuda en metabolopatias tratables, como la leucinosis.

  11. Multimodality imaging of bilateral pheochromocytoma. A case report.

    PubMed

    Paladino, Nunzia Cinzia; Lowery, Aoife; Guérin, Carole; Taïeb, David; Sebag, Frédéric

    2015-06-22

    I feocromocitomi bilaterali sono rari; nella maggior parte dei casi presentano origine ereditaria e sono legati a mutazioni germinali relative ai geni RET, VHL o SDHx, tuttavia in altri casi non viene ritrovata alcuna eziologia. A tal proposito riportiamo il caso clinico di una donna di 76 anni, giunta alla nostra osservazione per malessere generale sopravvenuto in concomitanza di crisi ipertensive responsabili di ospedalizzazione. Il profilo ormonale realizzato in tale occasione, era suggestivo di feocromocitoma (metanefrine plasmatiche ed urinarie 10 volte superiori al range di normalità). Gli esami radiologici (TC e RMN) rivelavano due lesioni surrenaliche bilaterali di diametro rispettivamente a destra di 47 mm ed a sinistra di 26 mm. Mentre la TC definiva le dimensioni di queste lesioni, il loro carattere eterogeneo e la loro ipervascolarizzazione oltre ai rapporti con gli organi adiacenti, la RMN si esprimeva già in favore di feocromocitoma bilaterale. La scintigrafia alla MIBG mostrava una iperfissazione a carico della lesione surrenalica destra mentre sulla surrenale controlaterale evidenziava una fissazione limitata, relativa alla midollare normale. Tenuto conto del forte sospetto di feocromocitoma bilaterale, veniva eseguita una TEP alla 18F-FDOPA che mostrava un intenso ipermetabolismo a carico della massa surrenalica destra, mentre controlateralmente una fissazione simile a quella del fegato e pertanto non sospetta, nonostante molti studi sostengano una sensibilità uguale o addirittura superiore della TEP alla 18-FDOPA rispetto alla scintigrafia MIBG nei pazienti con feocromocitoma o paraganglioma. In un primo tempo veniva eseguita una surrenalectomia destra per via laparoscopica. In fase post-operatoria, in seguito alla constatazione del persistente incremento delle metanefrine plasmatiche ed urinarie, veniva realizzata una TEP alla 18 FDG che confermava la presenza di un’area di ipermetabolismo intenso a carico della lesione surrenalica sinistra

  12. [Anthracycline-induced cardiotoxicity: report of fatal cases].

    PubMed

    Vargas-Neri, Jessica Liliana; Castelán-Martínez, Osvaldo Daniel; de Jesús Estrada-Loza, María; Betanzos-Cabrera, Yadira; Rivas-Ruiz, Rodolfo

    2016-01-01

    Introducción: las antraciclinas son fármacos eficaces en el tratamiento de pacientes pediátricos con cáncer. Sin embargo, la cardiotoxicidad inducida por antraciclinas (CIA) es una reacción adversa grave que afecta la sobrevida de niños y jóvenes. Casos clínicos: el caso 1 estuvo constituido por una paciente de nueve años con linfoma de Hodgkin estadio IV con 12 ciclos de quimioterapia con epirrubicina y una dosis acumulada de 576 mg/m2. Después del último ciclo de quimioterapia, la paciente ingresó con respuesta inflamatoria sistémica, astenia y adinamia. El ecocardiograma reportó una FEVI de 22 %, FA de 11 % e insuficiencia mitral moderada. La paciente falleció dos días después con diagnóstico de cardiomiopatía dilatada secundaria a antraciclinas. El caso 2 fue el de una paciente de 15 años con linfoma no Hodgkin tipo Burkitt estadio IV, con dos ciclos de quimioterapia con epirrubicina y una dosis acumulada de 90 mg/m2. Después del último ciclo, la paciente presentó diversos focos infecciosos. El ecocardiograma reportó una FEVI de 49 %, una FA de 20 % y dilatación del ventrículo izquierdo con aplanamiento septal. La paciente falleció 13 días después del diagnóstico de cardiomiopatía dilatada por antraciclinas. Conclusión: la CIA es un problema en los pacientes pediátricos que reciben antraciclinas. El monitoreo durante y después de la quimioterapia es indispensable para detectar el inicio del daño cardiaco a fin de brindar una intervención oportuna que evite la evolución a una insuficiencia cardiaca.

  13. Estudio del sistema simbiótico AR Pavonis

    NASA Astrophysics Data System (ADS)

    Quiroga, C.; Brandi, E.; Ferrer, O.; García, L.; Barbá, R.

    Se presenta un estudio espectroscópico y polarimétrico de la binaria eclipsante AR Pavonis a partir de observaciones obtenidas con el telescopio de 2.15 m. del CASLEO (San Juan). El estudio de la naturaleza del sistema se realizó a través del análisis de algunos espectros reunidos entre los años 1990 y 1995 y de datos polarimétricos correspondientes al intervalo 1995 y 1997. El análisis espectroscópico indica que AR Pav está compuesta por una gigante roja M3.7 y una componente caliente compacta, con una temperatura mayor a 90000 K y una luminosidad del orden de 500Lsolar. A lo largo del período orbital, las variaciones observadas en flujo y en velocidades radiales, reflejan que las emisiones permitidas se forman en una región que rodea la componente caliente. El estudio de la polarización lineal de AR Pav indica que además de una componente interestelar, existe una componente intrínseca del sistema que varía temporalmente y con la longitud de onda de la luz polarizada. El distinto comportamiento del grado de polarización y del ángulo de posición observado en fases diferentes, sugiere que distintos mecanismos pueden estar actuando, dependiendo de la región de scattering observado a lo largo de la línea de la visual.

  14. Diffuse malignant biphasic peritoneal mesothelioma with cystic areas.

    PubMed

    Cabibi, Daniela; Tutino, Roberta; Salamone, Giuseppe; Cocorullo, Gianfranco; Agrusa, Antonino; Gulotta, Gaspare

    2016-06-20

    Il mesotelioma peritoneale maligno è una patologia rara la cui diagnosi è resa particolarmente difficile dalla molteplicità delle possibili presentazioni cliniche e morfologiche. A differenza della patologia pleurica, questa sembra avere una minore correlazione con l’esposizione all’asbesto. La prognosi è sfavorevole con una sopravvivenza media di 5.4 mesi. Riportiamo un caso di mesotelioma peritoneale in un paziente di 73 anni con esposizione professionale all’asbesto. La diagnosi è verosimilmente avvenuta dopo diversi inquadramenti clinici, che hanno compreso addominalgie attribuite ad IBD, poi non accertate istologicamente, e ad un’appendicite acuta. Per ultimo il paziente è giunto alla nostra osservazione con un quadro subocclusivo che l’indagine TC attribuiva ad una verosimile carcinosi peritoneale a primitivo sconosciuto. La laparoscopia esplorativa, poi convertita in approccio laparotomico, ha mostrato un quadro di peritonite incapsulante che coinvolgeva estesamente l’intestino tenue. È stata eseguita una resezione intestinale del tenue coinvolto ed una asportazione di un’area nodulare peri-splenica. L’esame istologico con l’integrazione di indagini immunoistochimiche ha permesso la diagnosi di mesotelioma peritoneale cistico maligno con istotipo bifasico che risulta essere il primo descritto in letteratura. Le aree cistiche avevano inizialmente fatto propendere per una diagnosi di mesotelioma multicistico benigno o di mesotelioma cistico con secondaria proliferazione miofibroblastica pseudosarcomatosa. Negli ultimi anni la prognosi di questa patologia ha trovato nell’utilizzo della chirurgia citoriduttiva e della chemioterapia intraperitoneale un miglioramento prognostico, queste nuove tecniche sono disponibili in centri di riferimento e trovano ad oggi indicazione solo in casi selezionati e in istotipi poco aggressivi. Il nostro paziente a causa dell’estensione della malattia, dell’istotipo non favorevole e dell

  15. [Occipital nerve stimulation for refractory chronic migraine].

    PubMed

    Bermejo, Pedro E; Torres, Cristina V; Sola, Rafael G

    2015-06-01

    Introduccion. La estimulacion de nervios occipitales (ENO) es un tratamiento preventivo de la migraña cronica refractaria que esta adquiriendo una importancia creciente en los ultimos años. Objetivo. Evaluar el mecanismo de accion, estudios clinicos, tecnica de implantacion y criterios de inclusion de la ENO en el tratamiento preventivo de la migraña. Desarrollo. Se realiza una revision no sistematica de la bibliografia sobre los aspectos anteriormente expuestos en la ENO como tratamiento para la migraña cronica. Esta patologia afecta aproximadamente al 2% de la poblacion y da lugar a una importante disminucion de la calidad de vida e interferencia con las actividades laborales y sociales. La ENO es una terapia emergente y prometedora para el tratamiento de la migraña cronica que ha demostrado una disminucion superior al 50% en el dolor en la mayoria de los estudios abiertos y ensayos clinicos publicados. Aunque el mecanismo de accion es desconocido, parece existir una neuromodulacion de la informacion nociceptiva trigeminal en el nucleo caudal del trigemino explicada mediante la teoria de la puerta de entrada de Melzack y Wall. La ENO es un tratamiento seguro y bien tolerado, y los efectos secundarios son habitualmente locales, como desplazamiento de los electrodos o infecciones de la herida quirurgica, que habitualmente no requieren su retirada. Conclusiones. La ENO es un tratamiento eficaz, bien tolerado y seguro en la prevencion de la migraña cronica, y supone una opcion util para aquellos pacientes con migraña cronica refractaria a los tratamientos medicos convencionales.

  16. Obstructive sleep apnoea syndrome and HLA in the North of Portugal.

    PubMed

    Silva, Luís; Lopes, João; Ramalheira, João; Cunha, Daniela; Carvalho, Cláudia; Bettencourt, Andreia; Bras, Sandra; Costa, Sandra; Silva, M Berta; Martins-da-Silva, António

    2015-10-01

    Introduccion. El sindrome de apnea obstructiva del sueño (SAOS) es una enfermedad frecuente, compleja y poligenica, con diversas etiologias que interaccionan originando un fenotipo unico. El SAOS puede ocurrir a cualquier edad del individuo y se presume la existencia de agregacion familiar. Han sido descritos diversos factores de predisposicion, como la edad, el sexo y la obesidad. La relacion entre los polimorfismos del antigeno leucocitario humano (HLA) y trastornos del sueño esta confirmada, tanto en poblaciones europeas como no europeas. No obstante, las relaciones descritas entre los alelos HLA y SAOS no han sido coherentes y carecen de valor informativo para la clasificacion del trastorno del sueño. Objetivo. Explorar la asociacion genetica del HLA con el SAOS en una poblacion del norte de Portugal y evaluar el papel de la obesidad en el contexto del HLA en el SAOS. Pacientes y metodos. Se estudio una cohorte de 131 pacientes con SAOS. Los pacientes fueron atendidos en una clinica del sueño ambulatoria donde se valoraron los antecedentes clinicos, se les practico una polisomnografia nocturna, una prueba de latencia multiple del sueño (si lo exigio el diagnostico diferencial), analiticas y estudios demograficos. A efectos comparativos, se utilizo una poblacion de control de 223 personas sanas. Se efectuo el genotipado del HLA-DRB1 con la reaccion en cadena de la polimerasa mediante cebadores de secuencia especifica. Resultados. En esta cohorte, el alelo HLA-DRB1*03 fue identificado como un factor de predisposicion para el SAOS (24% del SAOS frente a 15% de la poblacion de control; p = 0,025; odds ratio = 1,861; intervalo de confianza al 95% = 1,081-3,205). No hubo diferencias significativas en lo referente a otros alelos HLA-DBR1*. Conclusion. El HLA-DRB1*03 es un factor de predisposicion para el SAOS en la poblacion portuguesa.

  17. Creation and design of a test for the Evaluation of Upper Limb Apraxia (EULA) based on a cognitive model: a pilot study.

    PubMed

    Perez-Marmol, José Manuel; Lopez-Alcalde, Samuel; Carnero-Pardo, Cristóbal; Canadas-De la Fuente, Guillermo A; Peralta-Ramirez, M Isabel; Garcia-Rios, M Carmen

    2015-01-16

    Introduccion. La apraxia es un trastorno neurologico caracterizado por la dificultad en la ejecucion de habilidades gestuales aprendidas a pesar de tener preservados los sistemas motores y sensoriales, la coordinacion y la comprension, asi como de una adecuada colaboracion. Actualmente, existen pocas herramientas validadas que evaluen este sindrome de manera global. En el presente estudio, se ha creado y diseñado un test para la evaluacion de la apraxia de los miembros superiores (EULA), basado en modelos teoricos. Sujetos y metodos. Se selecciono una poblacion de 57 pacientes con quejas subjetivas de deterioro cognitivo y 39 personas sin quejas ni deterioro cognitivo, a las cuales se les administro el test EULA, entre otros tests. Se realizo un analisis factorial de componentes principales y un calculo tanto de la fiabilidad como de la validez de dicho instrumento. Resultados. El analisis factorial agrupo en nueve factores todos los items de la prueba, con una varianza total explicada del 69,91%. El test ha mostrado una alta fiabilidad, con un alfa de Cronbach de 0,929 y un coeficiente de Guttman de 0,870 con el metodo de las dos mitades. El test tambien mostro tener una adecuada validez de constructo, al existir correlacion significativa entre seis factores del test y dos subtests de apraxia. Conclusiones. El test EULA, surgido de las propuestas de evaluacion a nivel teorico desarrolladas por diferentes autores, muestra una puntuacion superior en personas sanas respecto a personas con manifestaciones subjetivas de deterioro cognitivo, ademas de tener una alta fiabilidad y validez de constructo.

  18. [Cost-effectiveness of buccal midazolam in the treatment of prolonged convulsive seizures in the outpatient setting in Spain].

    PubMed

    Raspall-Chaure, Miquel; Martinez-Bermejo, Antonio; Sanchez-Carpintero, Rocío; Ruiz-Falco Rojas, M Luz; Verdu-Perez, Alfonso; Smeyers-Dura, Patricia; Camino-Leon, Rafael; Sanmarti, Francesc X; Santos-Borbujo, José; Pico, Gustavo; Blanco-Barca, Oscar; Cebollero, M Antonia

    2014-06-01

    Introduccion. El tratamiento de las crisis epilepticas prolongadas requiere disponer de una medicacion de rescate comoda, segura y efectiva. Actualmente, el tratamiento estandar en la comunidad es el diacepam rectal. La introduccion de una solucion bucal de midazolam abre una perspectiva nueva en el tratamiento. Objetivo. Evaluar el coste-efectividad del midazolam bucal respecto al diacepam rectal para los niños con un diagnostico de epilepsia que presentan crisis convulsivas prolongadas en la comunidad en España. Materiales y metodos. Modelo coste-efectividad desde la perspectiva del Sistema Nacional de Salud (SNS) español, con resultados presentados en terminos de costes y años de vida ajustados por calidad. Los datos se obtuvieron de varias fuentes, incluidas las estimaciones de efectividad clinica de un ensayo clinico, de un panel Delphi en España y de una encuesta nacional a padres de niños con epilepsia para determinar las practicas actuales. Resultados. El tratamiento con midazolam bucal produce un ahorro de costes en comparacion con el diacepam rectal. El ahorro para el SNS español es de 5.484 euros por paciente al año. El tratamiento con midazolam bucal ofrece una mejora en la calidad de vida relacionada con la salud. Esto, unido al ahorro de costes, hace que el midazolam bucal sea dominante frente al diacepam rectal en todos los escenarios examinados. Conclusion. Los resultados del modelo muestran que el midazolam bucal es mas coste-efectivo que el diacepam rectal debido a una reduccion en la necesidad de llamadas a la ambulancia y estancias en el hospital, asi como a una mejora en la calidad de vida relacionada con la salud.

  19. EFFECTIVENESS OF AN EDUCATIONAL INTERVENTION TO REDUCE THE CONSUMPTION OF HIGH-CALORIE FOODS IN PUBLIC SCHOOL CHILDREN IN TERESINA, PIAUÍ (BRAZIL).

    PubMed

    Melo dos Santos, Marize; Passos Oliveira, Vanessa; Teixeira Lima, Sueli Maria; Clímaco Cruz, Kyria Jayanne; Soares de Oliveira, Ana Raquel; Soares Severo, Juliana

    2015-08-01

    Introdución: existe una alta prevalencia de sobrepeso y hábitos alimentarios pobres entre los adolescentes, y estos factores contribuyen al desarrollo de enfermedades crónicas. Objetivo: el objetivo de este estudio fue evaluar la efectividad de una intervención educativa diseñada para reducir el consumo de alimentos con alto contenido calórico en los niños de las escuelas públicas en Teresina, Piauí (Brasil). Material y métodos: estudio cuasi-experimental, aleatorizados y de intervención cuantitativo realizado con adolescentes (n = 126), con edades comprendidas entre 10 y 14 años, de ambos sexos. La intervención educativa se desarrolló durante nueve semanas, con reuniones semanales. Se realizó una encuesta previa y posterior a la intervención. Las asociaciones entre las variables fueron examinadas usando una prueba de chi-cuadrado (x2). Resultados: se observó una reducción significativa en el consumo de refrescos y jugos procesados posterior a la intervención educativa (p = 0,007). Tiene una mayor reducción en el consumo semanal de alimentos embutidos (p = 0,072). El consumo semanal de los adolescentes de alimentos fritos y patatas fritas también se redujo significativamente después de la intervención educativa (p < 0,001). Conclusiones: el programa educativo de alimentación y nutrición fue eficaz en la reducción de la ingesta de alimentos altos en calorías y bebidas de los adolescentes, lo cual contribuyó a una mejora en la calidad de los alimentos consumidos por los niños de las escuelas evaluadas.

  20. Evaluation of Arroyo Channel Restoration Efforts using Hydrological Modeling: Rancho San Bernardino, Sonora, MX

    NASA Astrophysics Data System (ADS)

    Jemison, N. E.; DeLong, S.; Henderson, W. M.; Adams, J.

    2012-12-01

    In the drylands of the southwestern U.S. and northwestern Mexico, historical river channel incision (arroyo cutting) has led to the destruction of riparian ecological systems and cieñega wetlands in many locations. Along Silver Creek on the Arizona-Sonora border, the Cuenca Los Ojos Foundation has been installing rock gabions and concrete and earthen berms with a goal of slowing flash floods, raising groundwater levels, and refilling arroyo channels with sediment in an area that changed from a broad, perennially wet cieñega to a narrow sand- and gravel-dominated arroyo channel with an average depth of ~6 m. The engineering efforts hope to restore desert wetlands, regrow riparian vegetation, and promote sediment deposition along the arroyo floor. Hydrological modeling allows us to predict how rare flood events interact with the restoration efforts and may guide future approaches to dryland ecological restoration. This modeling is complemented by detailed topographic surveying and use of streamflow sensors to monitor hydrological processes in the restoration project. We evaluate the inundation associated with model 10-, 50-, 100-, 500-, and 1,000-year floods through the study area using FLO-2D and HEC-RAS modeling environments in order to evaluate the possibility of returning surface inundation to the former cieñega surface. According to HEC-RAS model predictions, given current channel configuration, it would require a 500-year flood to overtop the channel banks and reinundate the cieñega (now terrace) surface, though the 100-year flood may lead to limited terrace surface inundation. Based on our models, 10-year floods were ~2 m from overtopping the arroyo walls, 50-year floods came ~1.5 m from overtopping the arroyos, 100-year floods were ~1.2 m from overtopping, and 500- and 1,000-year floods at least partially inundated the cieñega surface. The current topography of Silver Creek does not allow for frequent flooding of the former cieñega; model predictions